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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
01527b31 CT |
31 | #include <linux/notifier.h> |
32 | #include <linux/reboot.h> | |
760285e7 DH |
33 | #include <drm/drmP.h> |
34 | #include <drm/drm_crtc.h> | |
35 | #include <drm/drm_crtc_helper.h> | |
36 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 37 | #include "intel_drv.h" |
760285e7 | 38 | #include <drm/i915_drm.h> |
a4fc5ed6 | 39 | #include "i915_drv.h" |
a4fc5ed6 | 40 | |
a4fc5ed6 KP |
41 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
42 | ||
9dd4ffdf CML |
43 | struct dp_link_dpll { |
44 | int link_bw; | |
45 | struct dpll dpll; | |
46 | }; | |
47 | ||
48 | static const struct dp_link_dpll gen4_dpll[] = { | |
49 | { DP_LINK_BW_1_62, | |
50 | { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } }, | |
51 | { DP_LINK_BW_2_7, | |
52 | { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } } | |
53 | }; | |
54 | ||
55 | static const struct dp_link_dpll pch_dpll[] = { | |
56 | { DP_LINK_BW_1_62, | |
57 | { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } }, | |
58 | { DP_LINK_BW_2_7, | |
59 | { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } } | |
60 | }; | |
61 | ||
65ce4bf5 CML |
62 | static const struct dp_link_dpll vlv_dpll[] = { |
63 | { DP_LINK_BW_1_62, | |
58f6e632 | 64 | { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } }, |
65ce4bf5 CML |
65 | { DP_LINK_BW_2_7, |
66 | { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } } | |
67 | }; | |
68 | ||
ef9348c8 CML |
69 | /* |
70 | * CHV supports eDP 1.4 that have more link rates. | |
71 | * Below only provides the fixed rate but exclude variable rate. | |
72 | */ | |
73 | static const struct dp_link_dpll chv_dpll[] = { | |
74 | /* | |
75 | * CHV requires to program fractional division for m2. | |
76 | * m2 is stored in fixed point format using formula below | |
77 | * (m2_int << 22) | m2_fraction | |
78 | */ | |
79 | { DP_LINK_BW_1_62, /* m2_int = 32, m2_fraction = 1677722 */ | |
80 | { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } }, | |
81 | { DP_LINK_BW_2_7, /* m2_int = 27, m2_fraction = 0 */ | |
82 | { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } }, | |
83 | { DP_LINK_BW_5_4, /* m2_int = 27, m2_fraction = 0 */ | |
84 | { .p1 = 2, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } } | |
85 | }; | |
86 | ||
cfcb0fc9 JB |
87 | /** |
88 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
89 | * @intel_dp: DP struct | |
90 | * | |
91 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
92 | * will return true, and false otherwise. | |
93 | */ | |
94 | static bool is_edp(struct intel_dp *intel_dp) | |
95 | { | |
da63a9f2 PZ |
96 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
97 | ||
98 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
99 | } |
100 | ||
68b4d824 | 101 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 102 | { |
68b4d824 ID |
103 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
104 | ||
105 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
106 | } |
107 | ||
df0e9248 CW |
108 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
109 | { | |
fa90ecef | 110 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
111 | } |
112 | ||
ea5b213a | 113 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
adddaaf4 | 114 | static bool _edp_panel_vdd_on(struct intel_dp *intel_dp); |
4be73780 | 115 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
a4fc5ed6 | 116 | |
0e32b39c | 117 | int |
ea5b213a | 118 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 119 | { |
7183dc29 | 120 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
06ea66b6 | 121 | struct drm_device *dev = intel_dp->attached_connector->base.dev; |
a4fc5ed6 KP |
122 | |
123 | switch (max_link_bw) { | |
124 | case DP_LINK_BW_1_62: | |
125 | case DP_LINK_BW_2_7: | |
126 | break; | |
d4eead50 | 127 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
9bbfd20a PZ |
128 | if (((IS_HASWELL(dev) && !IS_HSW_ULX(dev)) || |
129 | INTEL_INFO(dev)->gen >= 8) && | |
06ea66b6 TP |
130 | intel_dp->dpcd[DP_DPCD_REV] >= 0x12) |
131 | max_link_bw = DP_LINK_BW_5_4; | |
132 | else | |
133 | max_link_bw = DP_LINK_BW_2_7; | |
d4eead50 | 134 | break; |
a4fc5ed6 | 135 | default: |
d4eead50 ID |
136 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
137 | max_link_bw); | |
a4fc5ed6 KP |
138 | max_link_bw = DP_LINK_BW_1_62; |
139 | break; | |
140 | } | |
141 | return max_link_bw; | |
142 | } | |
143 | ||
eeb6324d PZ |
144 | static u8 intel_dp_max_lane_count(struct intel_dp *intel_dp) |
145 | { | |
146 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
147 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
148 | u8 source_max, sink_max; | |
149 | ||
150 | source_max = 4; | |
151 | if (HAS_DDI(dev) && intel_dig_port->port == PORT_A && | |
152 | (intel_dig_port->saved_port_bits & DDI_A_4_LANES) == 0) | |
153 | source_max = 2; | |
154 | ||
155 | sink_max = drm_dp_max_lane_count(intel_dp->dpcd); | |
156 | ||
157 | return min(source_max, sink_max); | |
158 | } | |
159 | ||
cd9dde44 AJ |
160 | /* |
161 | * The units on the numbers in the next two are... bizarre. Examples will | |
162 | * make it clearer; this one parallels an example in the eDP spec. | |
163 | * | |
164 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
165 | * | |
166 | * 270000 * 1 * 8 / 10 == 216000 | |
167 | * | |
168 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
169 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
170 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
171 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
172 | * | |
173 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
174 | * get the result in decakilobits instead of kilobits. | |
175 | */ | |
176 | ||
a4fc5ed6 | 177 | static int |
c898261c | 178 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 179 | { |
cd9dde44 | 180 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
181 | } |
182 | ||
fe27d53e DA |
183 | static int |
184 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
185 | { | |
186 | return (max_link_clock * max_lanes * 8) / 10; | |
187 | } | |
188 | ||
c19de8eb | 189 | static enum drm_mode_status |
a4fc5ed6 KP |
190 | intel_dp_mode_valid(struct drm_connector *connector, |
191 | struct drm_display_mode *mode) | |
192 | { | |
df0e9248 | 193 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
194 | struct intel_connector *intel_connector = to_intel_connector(connector); |
195 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
196 | int target_clock = mode->clock; |
197 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 198 | |
dd06f90e JN |
199 | if (is_edp(intel_dp) && fixed_mode) { |
200 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
201 | return MODE_PANEL; |
202 | ||
dd06f90e | 203 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 204 | return MODE_PANEL; |
03afc4a2 DV |
205 | |
206 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
207 | } |
208 | ||
36008365 | 209 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
eeb6324d | 210 | max_lanes = intel_dp_max_lane_count(intel_dp); |
36008365 DV |
211 | |
212 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
213 | mode_rate = intel_dp_link_required(target_clock, 18); | |
214 | ||
215 | if (mode_rate > max_rate) | |
c4867936 | 216 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
217 | |
218 | if (mode->clock < 10000) | |
219 | return MODE_CLOCK_LOW; | |
220 | ||
0af78a2b DV |
221 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
222 | return MODE_H_ILLEGAL; | |
223 | ||
a4fc5ed6 KP |
224 | return MODE_OK; |
225 | } | |
226 | ||
227 | static uint32_t | |
228 | pack_aux(uint8_t *src, int src_bytes) | |
229 | { | |
230 | int i; | |
231 | uint32_t v = 0; | |
232 | ||
233 | if (src_bytes > 4) | |
234 | src_bytes = 4; | |
235 | for (i = 0; i < src_bytes; i++) | |
236 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
237 | return v; | |
238 | } | |
239 | ||
240 | static void | |
241 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
242 | { | |
243 | int i; | |
244 | if (dst_bytes > 4) | |
245 | dst_bytes = 4; | |
246 | for (i = 0; i < dst_bytes; i++) | |
247 | dst[i] = src >> ((3-i) * 8); | |
248 | } | |
249 | ||
fb0f8fbf KP |
250 | /* hrawclock is 1/4 the FSB frequency */ |
251 | static int | |
252 | intel_hrawclk(struct drm_device *dev) | |
253 | { | |
254 | struct drm_i915_private *dev_priv = dev->dev_private; | |
255 | uint32_t clkcfg; | |
256 | ||
9473c8f4 VP |
257 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
258 | if (IS_VALLEYVIEW(dev)) | |
259 | return 200; | |
260 | ||
fb0f8fbf KP |
261 | clkcfg = I915_READ(CLKCFG); |
262 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
263 | case CLKCFG_FSB_400: | |
264 | return 100; | |
265 | case CLKCFG_FSB_533: | |
266 | return 133; | |
267 | case CLKCFG_FSB_667: | |
268 | return 166; | |
269 | case CLKCFG_FSB_800: | |
270 | return 200; | |
271 | case CLKCFG_FSB_1067: | |
272 | return 266; | |
273 | case CLKCFG_FSB_1333: | |
274 | return 333; | |
275 | /* these two are just a guess; one of them might be right */ | |
276 | case CLKCFG_FSB_1600: | |
277 | case CLKCFG_FSB_1600_ALT: | |
278 | return 400; | |
279 | default: | |
280 | return 133; | |
281 | } | |
282 | } | |
283 | ||
bf13e81b JN |
284 | static void |
285 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
286 | struct intel_dp *intel_dp, | |
287 | struct edp_power_seq *out); | |
288 | static void | |
289 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
290 | struct intel_dp *intel_dp, | |
291 | struct edp_power_seq *out); | |
292 | ||
293 | static enum pipe | |
294 | vlv_power_sequencer_pipe(struct intel_dp *intel_dp) | |
295 | { | |
296 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
297 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
298 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
299 | struct drm_i915_private *dev_priv = dev->dev_private; | |
300 | enum port port = intel_dig_port->port; | |
301 | enum pipe pipe; | |
302 | ||
303 | /* modeset should have pipe */ | |
304 | if (crtc) | |
305 | return to_intel_crtc(crtc)->pipe; | |
306 | ||
307 | /* init time, try to find a pipe with this port selected */ | |
308 | for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) { | |
309 | u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) & | |
310 | PANEL_PORT_SELECT_MASK; | |
311 | if (port_sel == PANEL_PORT_SELECT_DPB_VLV && port == PORT_B) | |
312 | return pipe; | |
313 | if (port_sel == PANEL_PORT_SELECT_DPC_VLV && port == PORT_C) | |
314 | return pipe; | |
315 | } | |
316 | ||
317 | /* shrug */ | |
318 | return PIPE_A; | |
319 | } | |
320 | ||
321 | static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) | |
322 | { | |
323 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
324 | ||
325 | if (HAS_PCH_SPLIT(dev)) | |
326 | return PCH_PP_CONTROL; | |
327 | else | |
328 | return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); | |
329 | } | |
330 | ||
331 | static u32 _pp_stat_reg(struct intel_dp *intel_dp) | |
332 | { | |
333 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
334 | ||
335 | if (HAS_PCH_SPLIT(dev)) | |
336 | return PCH_PP_STATUS; | |
337 | else | |
338 | return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); | |
339 | } | |
340 | ||
01527b31 CT |
341 | /* Reboot notifier handler to shutdown panel power to guarantee T12 timing |
342 | This function only applicable when panel PM state is not to be tracked */ | |
343 | static int edp_notify_handler(struct notifier_block *this, unsigned long code, | |
344 | void *unused) | |
345 | { | |
346 | struct intel_dp *intel_dp = container_of(this, typeof(* intel_dp), | |
347 | edp_notifier); | |
348 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
349 | struct drm_i915_private *dev_priv = dev->dev_private; | |
350 | u32 pp_div; | |
351 | u32 pp_ctrl_reg, pp_div_reg; | |
352 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); | |
353 | ||
354 | if (!is_edp(intel_dp) || code != SYS_RESTART) | |
355 | return 0; | |
356 | ||
357 | if (IS_VALLEYVIEW(dev)) { | |
358 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
359 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
360 | pp_div = I915_READ(pp_div_reg); | |
361 | pp_div &= PP_REFERENCE_DIVIDER_MASK; | |
362 | ||
363 | /* 0x1F write to PP_DIV_REG sets max cycle delay */ | |
364 | I915_WRITE(pp_div_reg, pp_div | 0x1F); | |
365 | I915_WRITE(pp_ctrl_reg, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); | |
366 | msleep(intel_dp->panel_power_cycle_delay); | |
367 | } | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
4be73780 | 372 | static bool edp_have_panel_power(struct intel_dp *intel_dp) |
ebf33b18 | 373 | { |
30add22d | 374 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 KP |
375 | struct drm_i915_private *dev_priv = dev->dev_private; |
376 | ||
bf13e81b | 377 | return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0; |
ebf33b18 KP |
378 | } |
379 | ||
4be73780 | 380 | static bool edp_have_panel_vdd(struct intel_dp *intel_dp) |
ebf33b18 | 381 | { |
30add22d | 382 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 383 | struct drm_i915_private *dev_priv = dev->dev_private; |
bb4932c4 ID |
384 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
385 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
386 | enum intel_display_power_domain power_domain; | |
ebf33b18 | 387 | |
bb4932c4 ID |
388 | power_domain = intel_display_port_power_domain(intel_encoder); |
389 | return intel_display_power_enabled(dev_priv, power_domain) && | |
efbc20ab | 390 | (I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0; |
ebf33b18 KP |
391 | } |
392 | ||
9b984dae KP |
393 | static void |
394 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
395 | { | |
30add22d | 396 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 397 | struct drm_i915_private *dev_priv = dev->dev_private; |
ebf33b18 | 398 | |
9b984dae KP |
399 | if (!is_edp(intel_dp)) |
400 | return; | |
453c5420 | 401 | |
4be73780 | 402 | if (!edp_have_panel_power(intel_dp) && !edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
403 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
404 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
bf13e81b JN |
405 | I915_READ(_pp_stat_reg(intel_dp)), |
406 | I915_READ(_pp_ctrl_reg(intel_dp))); | |
9b984dae KP |
407 | } |
408 | } | |
409 | ||
9ee32fea DV |
410 | static uint32_t |
411 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
412 | { | |
413 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
414 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
415 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 416 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
417 | uint32_t status; |
418 | bool done; | |
419 | ||
ef04f00d | 420 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 421 | if (has_aux_irq) |
b18ac466 | 422 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 423 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
424 | else |
425 | done = wait_for_atomic(C, 10) == 0; | |
426 | if (!done) | |
427 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
428 | has_aux_irq); | |
429 | #undef C | |
430 | ||
431 | return status; | |
432 | } | |
433 | ||
ec5b01dd | 434 | static uint32_t i9xx_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
a4fc5ed6 | 435 | { |
174edf1f PZ |
436 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
437 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
9ee32fea | 438 | |
ec5b01dd DL |
439 | /* |
440 | * The clock divider is based off the hrawclk, and would like to run at | |
441 | * 2MHz. So, take the hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 442 | */ |
ec5b01dd DL |
443 | return index ? 0 : intel_hrawclk(dev) / 2; |
444 | } | |
445 | ||
446 | static uint32_t ilk_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
447 | { | |
448 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
449 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
450 | ||
451 | if (index) | |
452 | return 0; | |
453 | ||
454 | if (intel_dig_port->port == PORT_A) { | |
455 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
b84a1cf8 | 456 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 457 | else |
b84a1cf8 | 458 | return 225; /* eDP input clock at 450Mhz */ |
ec5b01dd DL |
459 | } else { |
460 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); | |
461 | } | |
462 | } | |
463 | ||
464 | static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index) | |
465 | { | |
466 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
467 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
468 | struct drm_i915_private *dev_priv = dev->dev_private; | |
469 | ||
470 | if (intel_dig_port->port == PORT_A) { | |
471 | if (index) | |
472 | return 0; | |
473 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
2c55c336 JN |
474 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
475 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
476 | switch (index) { |
477 | case 0: return 63; | |
478 | case 1: return 72; | |
479 | default: return 0; | |
480 | } | |
ec5b01dd | 481 | } else { |
bc86625a | 482 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 483 | } |
b84a1cf8 RV |
484 | } |
485 | ||
ec5b01dd DL |
486 | static uint32_t vlv_get_aux_clock_divider(struct intel_dp *intel_dp, int index) |
487 | { | |
488 | return index ? 0 : 100; | |
489 | } | |
490 | ||
5ed12a19 DL |
491 | static uint32_t i9xx_get_aux_send_ctl(struct intel_dp *intel_dp, |
492 | bool has_aux_irq, | |
493 | int send_bytes, | |
494 | uint32_t aux_clock_divider) | |
495 | { | |
496 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
497 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
498 | uint32_t precharge, timeout; | |
499 | ||
500 | if (IS_GEN6(dev)) | |
501 | precharge = 3; | |
502 | else | |
503 | precharge = 5; | |
504 | ||
505 | if (IS_BROADWELL(dev) && intel_dp->aux_ch_ctl_reg == DPA_AUX_CH_CTL) | |
506 | timeout = DP_AUX_CH_CTL_TIME_OUT_600us; | |
507 | else | |
508 | timeout = DP_AUX_CH_CTL_TIME_OUT_400us; | |
509 | ||
510 | return DP_AUX_CH_CTL_SEND_BUSY | | |
788d4433 | 511 | DP_AUX_CH_CTL_DONE | |
5ed12a19 | 512 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
788d4433 | 513 | DP_AUX_CH_CTL_TIME_OUT_ERROR | |
5ed12a19 | 514 | timeout | |
788d4433 | 515 | DP_AUX_CH_CTL_RECEIVE_ERROR | |
5ed12a19 DL |
516 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | |
517 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
788d4433 | 518 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT); |
5ed12a19 DL |
519 | } |
520 | ||
b84a1cf8 RV |
521 | static int |
522 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
523 | uint8_t *send, int send_bytes, | |
524 | uint8_t *recv, int recv_size) | |
525 | { | |
526 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
527 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
528 | struct drm_i915_private *dev_priv = dev->dev_private; | |
529 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
530 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 531 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
532 | int i, ret, recv_bytes; |
533 | uint32_t status; | |
5ed12a19 | 534 | int try, clock = 0; |
4e6b788c | 535 | bool has_aux_irq = HAS_AUX_IRQ(dev); |
884f19e9 JN |
536 | bool vdd; |
537 | ||
538 | vdd = _edp_panel_vdd_on(intel_dp); | |
b84a1cf8 RV |
539 | |
540 | /* dp aux is extremely sensitive to irq latency, hence request the | |
541 | * lowest possible wakeup latency and so prevent the cpu from going into | |
542 | * deep sleep states. | |
543 | */ | |
544 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
545 | ||
546 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 547 | |
c67a470b PZ |
548 | intel_aux_display_runtime_get(dev_priv); |
549 | ||
11bee43e JB |
550 | /* Try to wait for any previous AUX channel activity */ |
551 | for (try = 0; try < 3; try++) { | |
ef04f00d | 552 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
553 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
554 | break; | |
555 | msleep(1); | |
556 | } | |
557 | ||
558 | if (try == 3) { | |
559 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
560 | I915_READ(ch_ctl)); | |
9ee32fea DV |
561 | ret = -EBUSY; |
562 | goto out; | |
4f7f7b7e CW |
563 | } |
564 | ||
46a5ae9f PZ |
565 | /* Only 5 data registers! */ |
566 | if (WARN_ON(send_bytes > 20 || recv_size > 20)) { | |
567 | ret = -E2BIG; | |
568 | goto out; | |
569 | } | |
570 | ||
ec5b01dd | 571 | while ((aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, clock++))) { |
153b1100 DL |
572 | u32 send_ctl = intel_dp->get_aux_send_ctl(intel_dp, |
573 | has_aux_irq, | |
574 | send_bytes, | |
575 | aux_clock_divider); | |
5ed12a19 | 576 | |
bc86625a CW |
577 | /* Must try at least 3 times according to DP spec */ |
578 | for (try = 0; try < 5; try++) { | |
579 | /* Load the send data into the aux channel data registers */ | |
580 | for (i = 0; i < send_bytes; i += 4) | |
581 | I915_WRITE(ch_data + i, | |
582 | pack_aux(send + i, send_bytes - i)); | |
583 | ||
584 | /* Send the command and wait for it to complete */ | |
5ed12a19 | 585 | I915_WRITE(ch_ctl, send_ctl); |
bc86625a CW |
586 | |
587 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
588 | ||
589 | /* Clear done status and any errors */ | |
590 | I915_WRITE(ch_ctl, | |
591 | status | | |
592 | DP_AUX_CH_CTL_DONE | | |
593 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
594 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
595 | ||
596 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
597 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
598 | continue; | |
599 | if (status & DP_AUX_CH_CTL_DONE) | |
600 | break; | |
601 | } | |
4f7f7b7e | 602 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
603 | break; |
604 | } | |
605 | ||
a4fc5ed6 | 606 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 607 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
608 | ret = -EBUSY; |
609 | goto out; | |
a4fc5ed6 KP |
610 | } |
611 | ||
612 | /* Check for timeout or receive error. | |
613 | * Timeouts occur when the sink is not connected | |
614 | */ | |
a5b3da54 | 615 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 616 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
617 | ret = -EIO; |
618 | goto out; | |
a5b3da54 | 619 | } |
1ae8c0a5 KP |
620 | |
621 | /* Timeouts occur when the device isn't connected, so they're | |
622 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 623 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 624 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
625 | ret = -ETIMEDOUT; |
626 | goto out; | |
a4fc5ed6 KP |
627 | } |
628 | ||
629 | /* Unload any bytes sent back from the other side */ | |
630 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
631 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
632 | if (recv_bytes > recv_size) |
633 | recv_bytes = recv_size; | |
0206e353 | 634 | |
4f7f7b7e CW |
635 | for (i = 0; i < recv_bytes; i += 4) |
636 | unpack_aux(I915_READ(ch_data + i), | |
637 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 638 | |
9ee32fea DV |
639 | ret = recv_bytes; |
640 | out: | |
641 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 642 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea | 643 | |
884f19e9 JN |
644 | if (vdd) |
645 | edp_panel_vdd_off(intel_dp, false); | |
646 | ||
9ee32fea | 647 | return ret; |
a4fc5ed6 KP |
648 | } |
649 | ||
a6c8aff0 JN |
650 | #define BARE_ADDRESS_SIZE 3 |
651 | #define HEADER_SIZE (BARE_ADDRESS_SIZE + 1) | |
9d1a1031 JN |
652 | static ssize_t |
653 | intel_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) | |
a4fc5ed6 | 654 | { |
9d1a1031 JN |
655 | struct intel_dp *intel_dp = container_of(aux, struct intel_dp, aux); |
656 | uint8_t txbuf[20], rxbuf[20]; | |
657 | size_t txsize, rxsize; | |
a4fc5ed6 | 658 | int ret; |
a4fc5ed6 | 659 | |
9d1a1031 JN |
660 | txbuf[0] = msg->request << 4; |
661 | txbuf[1] = msg->address >> 8; | |
662 | txbuf[2] = msg->address & 0xff; | |
663 | txbuf[3] = msg->size - 1; | |
46a5ae9f | 664 | |
9d1a1031 JN |
665 | switch (msg->request & ~DP_AUX_I2C_MOT) { |
666 | case DP_AUX_NATIVE_WRITE: | |
667 | case DP_AUX_I2C_WRITE: | |
a6c8aff0 | 668 | txsize = msg->size ? HEADER_SIZE + msg->size : BARE_ADDRESS_SIZE; |
9d1a1031 | 669 | rxsize = 1; |
f51a44b9 | 670 | |
9d1a1031 JN |
671 | if (WARN_ON(txsize > 20)) |
672 | return -E2BIG; | |
a4fc5ed6 | 673 | |
9d1a1031 | 674 | memcpy(txbuf + HEADER_SIZE, msg->buffer, msg->size); |
a4fc5ed6 | 675 | |
9d1a1031 JN |
676 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
677 | if (ret > 0) { | |
678 | msg->reply = rxbuf[0] >> 4; | |
a4fc5ed6 | 679 | |
9d1a1031 JN |
680 | /* Return payload size. */ |
681 | ret = msg->size; | |
682 | } | |
683 | break; | |
46a5ae9f | 684 | |
9d1a1031 JN |
685 | case DP_AUX_NATIVE_READ: |
686 | case DP_AUX_I2C_READ: | |
a6c8aff0 | 687 | txsize = msg->size ? HEADER_SIZE : BARE_ADDRESS_SIZE; |
9d1a1031 | 688 | rxsize = msg->size + 1; |
a4fc5ed6 | 689 | |
9d1a1031 JN |
690 | if (WARN_ON(rxsize > 20)) |
691 | return -E2BIG; | |
a4fc5ed6 | 692 | |
9d1a1031 JN |
693 | ret = intel_dp_aux_ch(intel_dp, txbuf, txsize, rxbuf, rxsize); |
694 | if (ret > 0) { | |
695 | msg->reply = rxbuf[0] >> 4; | |
696 | /* | |
697 | * Assume happy day, and copy the data. The caller is | |
698 | * expected to check msg->reply before touching it. | |
699 | * | |
700 | * Return payload size. | |
701 | */ | |
702 | ret--; | |
703 | memcpy(msg->buffer, rxbuf + 1, ret); | |
a4fc5ed6 | 704 | } |
9d1a1031 JN |
705 | break; |
706 | ||
707 | default: | |
708 | ret = -EINVAL; | |
709 | break; | |
a4fc5ed6 | 710 | } |
f51a44b9 | 711 | |
9d1a1031 | 712 | return ret; |
a4fc5ed6 KP |
713 | } |
714 | ||
9d1a1031 JN |
715 | static void |
716 | intel_dp_aux_init(struct intel_dp *intel_dp, struct intel_connector *connector) | |
717 | { | |
718 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
33ad6626 JN |
719 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
720 | enum port port = intel_dig_port->port; | |
0b99836f | 721 | const char *name = NULL; |
ab2c0672 DA |
722 | int ret; |
723 | ||
33ad6626 JN |
724 | switch (port) { |
725 | case PORT_A: | |
726 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
0b99836f | 727 | name = "DPDDC-A"; |
ab2c0672 | 728 | break; |
33ad6626 JN |
729 | case PORT_B: |
730 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
0b99836f | 731 | name = "DPDDC-B"; |
ab2c0672 | 732 | break; |
33ad6626 JN |
733 | case PORT_C: |
734 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
0b99836f | 735 | name = "DPDDC-C"; |
ab2c0672 | 736 | break; |
33ad6626 JN |
737 | case PORT_D: |
738 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
0b99836f | 739 | name = "DPDDC-D"; |
33ad6626 JN |
740 | break; |
741 | default: | |
742 | BUG(); | |
ab2c0672 DA |
743 | } |
744 | ||
33ad6626 JN |
745 | if (!HAS_DDI(dev)) |
746 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; | |
8316f337 | 747 | |
0b99836f | 748 | intel_dp->aux.name = name; |
9d1a1031 JN |
749 | intel_dp->aux.dev = dev->dev; |
750 | intel_dp->aux.transfer = intel_dp_aux_transfer; | |
8316f337 | 751 | |
0b99836f JN |
752 | DRM_DEBUG_KMS("registering %s bus for %s\n", name, |
753 | connector->base.kdev->kobj.name); | |
8316f337 | 754 | |
4f71d0cb | 755 | ret = drm_dp_aux_register(&intel_dp->aux); |
0b99836f | 756 | if (ret < 0) { |
4f71d0cb | 757 | DRM_ERROR("drm_dp_aux_register() for %s failed (%d)\n", |
0b99836f JN |
758 | name, ret); |
759 | return; | |
ab2c0672 | 760 | } |
8a5e6aeb | 761 | |
0b99836f JN |
762 | ret = sysfs_create_link(&connector->base.kdev->kobj, |
763 | &intel_dp->aux.ddc.dev.kobj, | |
764 | intel_dp->aux.ddc.dev.kobj.name); | |
765 | if (ret < 0) { | |
766 | DRM_ERROR("sysfs_create_link() for %s failed (%d)\n", name, ret); | |
4f71d0cb | 767 | drm_dp_aux_unregister(&intel_dp->aux); |
ab2c0672 | 768 | } |
a4fc5ed6 KP |
769 | } |
770 | ||
80f65de3 ID |
771 | static void |
772 | intel_dp_connector_unregister(struct intel_connector *intel_connector) | |
773 | { | |
774 | struct intel_dp *intel_dp = intel_attached_dp(&intel_connector->base); | |
775 | ||
0e32b39c DA |
776 | if (!intel_connector->mst_port) |
777 | sysfs_remove_link(&intel_connector->base.kdev->kobj, | |
778 | intel_dp->aux.ddc.dev.kobj.name); | |
80f65de3 ID |
779 | intel_connector_unregister(intel_connector); |
780 | } | |
781 | ||
0e50338c DV |
782 | static void |
783 | hsw_dp_set_ddi_pll_sel(struct intel_crtc_config *pipe_config, int link_bw) | |
784 | { | |
785 | switch (link_bw) { | |
786 | case DP_LINK_BW_1_62: | |
787 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; | |
788 | break; | |
789 | case DP_LINK_BW_2_7: | |
790 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; | |
791 | break; | |
792 | case DP_LINK_BW_5_4: | |
793 | pipe_config->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; | |
794 | break; | |
795 | } | |
796 | } | |
797 | ||
c6bb3538 DV |
798 | static void |
799 | intel_dp_set_clock(struct intel_encoder *encoder, | |
800 | struct intel_crtc_config *pipe_config, int link_bw) | |
801 | { | |
802 | struct drm_device *dev = encoder->base.dev; | |
9dd4ffdf CML |
803 | const struct dp_link_dpll *divisor = NULL; |
804 | int i, count = 0; | |
c6bb3538 DV |
805 | |
806 | if (IS_G4X(dev)) { | |
9dd4ffdf CML |
807 | divisor = gen4_dpll; |
808 | count = ARRAY_SIZE(gen4_dpll); | |
c6bb3538 | 809 | } else if (HAS_PCH_SPLIT(dev)) { |
9dd4ffdf CML |
810 | divisor = pch_dpll; |
811 | count = ARRAY_SIZE(pch_dpll); | |
ef9348c8 CML |
812 | } else if (IS_CHERRYVIEW(dev)) { |
813 | divisor = chv_dpll; | |
814 | count = ARRAY_SIZE(chv_dpll); | |
c6bb3538 | 815 | } else if (IS_VALLEYVIEW(dev)) { |
65ce4bf5 CML |
816 | divisor = vlv_dpll; |
817 | count = ARRAY_SIZE(vlv_dpll); | |
c6bb3538 | 818 | } |
9dd4ffdf CML |
819 | |
820 | if (divisor && count) { | |
821 | for (i = 0; i < count; i++) { | |
822 | if (link_bw == divisor[i].link_bw) { | |
823 | pipe_config->dpll = divisor[i].dpll; | |
824 | pipe_config->clock_set = true; | |
825 | break; | |
826 | } | |
827 | } | |
c6bb3538 DV |
828 | } |
829 | } | |
830 | ||
00c09d70 | 831 | bool |
5bfe2ac0 DV |
832 | intel_dp_compute_config(struct intel_encoder *encoder, |
833 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 834 | { |
5bfe2ac0 | 835 | struct drm_device *dev = encoder->base.dev; |
36008365 | 836 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 837 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 838 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 839 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 840 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 841 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 842 | int lane_count, clock; |
56071a20 | 843 | int min_lane_count = 1; |
eeb6324d | 844 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
06ea66b6 | 845 | /* Conveniently, the link BW constants become indices with a shift...*/ |
56071a20 | 846 | int min_clock = 0; |
06ea66b6 | 847 | int max_clock = intel_dp_max_link_bw(intel_dp) >> 3; |
083f9560 | 848 | int bpp, mode_rate; |
06ea66b6 | 849 | static int bws[] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7, DP_LINK_BW_5_4 }; |
ff9a6750 | 850 | int link_avail, link_clock; |
a4fc5ed6 | 851 | |
bc7d38a4 | 852 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
853 | pipe_config->has_pch_encoder = true; |
854 | ||
03afc4a2 | 855 | pipe_config->has_dp_encoder = true; |
f769cd24 | 856 | pipe_config->has_drrs = false; |
9ed109a7 | 857 | pipe_config->has_audio = intel_dp->has_audio; |
a4fc5ed6 | 858 | |
dd06f90e JN |
859 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
860 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
861 | adjusted_mode); | |
2dd24552 JB |
862 | if (!HAS_PCH_SPLIT(dev)) |
863 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
864 | intel_connector->panel.fitting_mode); | |
865 | else | |
b074cec8 JB |
866 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
867 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
868 | } |
869 | ||
cb1793ce | 870 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
871 | return false; |
872 | ||
083f9560 DV |
873 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
874 | "max bw %02x pixel clock %iKHz\n", | |
241bfc38 DL |
875 | max_lane_count, bws[max_clock], |
876 | adjusted_mode->crtc_clock); | |
083f9560 | 877 | |
36008365 DV |
878 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
879 | * bpc in between. */ | |
3e7ca985 | 880 | bpp = pipe_config->pipe_bpp; |
56071a20 JN |
881 | if (is_edp(intel_dp)) { |
882 | if (dev_priv->vbt.edp_bpp && dev_priv->vbt.edp_bpp < bpp) { | |
883 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
884 | dev_priv->vbt.edp_bpp); | |
885 | bpp = dev_priv->vbt.edp_bpp; | |
886 | } | |
887 | ||
f4cdbc21 JN |
888 | if (IS_BROADWELL(dev)) { |
889 | /* Yes, it's an ugly hack. */ | |
890 | min_lane_count = max_lane_count; | |
891 | DRM_DEBUG_KMS("forcing lane count to max (%u) on BDW\n", | |
892 | min_lane_count); | |
893 | } else if (dev_priv->vbt.edp_lanes) { | |
56071a20 JN |
894 | min_lane_count = min(dev_priv->vbt.edp_lanes, |
895 | max_lane_count); | |
896 | DRM_DEBUG_KMS("using min %u lanes per VBT\n", | |
897 | min_lane_count); | |
898 | } | |
899 | ||
900 | if (dev_priv->vbt.edp_rate) { | |
901 | min_clock = min(dev_priv->vbt.edp_rate >> 3, max_clock); | |
902 | DRM_DEBUG_KMS("using min %02x link bw per VBT\n", | |
903 | bws[min_clock]); | |
904 | } | |
7984211e | 905 | } |
657445fe | 906 | |
36008365 | 907 | for (; bpp >= 6*3; bpp -= 2*3) { |
241bfc38 DL |
908 | mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock, |
909 | bpp); | |
36008365 | 910 | |
c6930992 DA |
911 | for (clock = min_clock; clock <= max_clock; clock++) { |
912 | for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) { | |
36008365 DV |
913 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); |
914 | link_avail = intel_dp_max_data_rate(link_clock, | |
915 | lane_count); | |
916 | ||
917 | if (mode_rate <= link_avail) { | |
918 | goto found; | |
919 | } | |
920 | } | |
921 | } | |
922 | } | |
c4867936 | 923 | |
36008365 | 924 | return false; |
3685a8f3 | 925 | |
36008365 | 926 | found: |
55bc60db VS |
927 | if (intel_dp->color_range_auto) { |
928 | /* | |
929 | * See: | |
930 | * CEA-861-E - 5.1 Default Encoding Parameters | |
931 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
932 | */ | |
18316c8c | 933 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
934 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
935 | else | |
936 | intel_dp->color_range = 0; | |
937 | } | |
938 | ||
3685a8f3 | 939 | if (intel_dp->color_range) |
50f3b016 | 940 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 941 | |
36008365 DV |
942 | intel_dp->link_bw = bws[clock]; |
943 | intel_dp->lane_count = lane_count; | |
657445fe | 944 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 945 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 946 | |
36008365 DV |
947 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
948 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 949 | pipe_config->port_clock, bpp); |
36008365 DV |
950 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
951 | mode_rate, link_avail); | |
a4fc5ed6 | 952 | |
03afc4a2 | 953 | intel_link_compute_m_n(bpp, lane_count, |
241bfc38 DL |
954 | adjusted_mode->crtc_clock, |
955 | pipe_config->port_clock, | |
03afc4a2 | 956 | &pipe_config->dp_m_n); |
9d1a455b | 957 | |
439d7ac0 PB |
958 | if (intel_connector->panel.downclock_mode != NULL && |
959 | intel_dp->drrs_state.type == SEAMLESS_DRRS_SUPPORT) { | |
f769cd24 | 960 | pipe_config->has_drrs = true; |
439d7ac0 PB |
961 | intel_link_compute_m_n(bpp, lane_count, |
962 | intel_connector->panel.downclock_mode->clock, | |
963 | pipe_config->port_clock, | |
964 | &pipe_config->dp_m2_n2); | |
965 | } | |
966 | ||
0e50338c DV |
967 | if (HAS_DDI(dev)) |
968 | hsw_dp_set_ddi_pll_sel(pipe_config, intel_dp->link_bw); | |
969 | else | |
970 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); | |
c6bb3538 | 971 | |
03afc4a2 | 972 | return true; |
a4fc5ed6 KP |
973 | } |
974 | ||
7c62a164 | 975 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 976 | { |
7c62a164 DV |
977 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
978 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
979 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
980 | struct drm_i915_private *dev_priv = dev->dev_private; |
981 | u32 dpa_ctl; | |
982 | ||
ff9a6750 | 983 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
984 | dpa_ctl = I915_READ(DP_A); |
985 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
986 | ||
ff9a6750 | 987 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
988 | /* For a long time we've carried around a ILK-DevA w/a for the |
989 | * 160MHz clock. If we're really unlucky, it's still required. | |
990 | */ | |
991 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 992 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 993 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
994 | } else { |
995 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 996 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 997 | } |
1ce17038 | 998 | |
ea9b6006 DV |
999 | I915_WRITE(DP_A, dpa_ctl); |
1000 | ||
1001 | POSTING_READ(DP_A); | |
1002 | udelay(500); | |
1003 | } | |
1004 | ||
8ac33ed3 | 1005 | static void intel_dp_prepare(struct intel_encoder *encoder) |
a4fc5ed6 | 1006 | { |
b934223d | 1007 | struct drm_device *dev = encoder->base.dev; |
417e822d | 1008 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 1009 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1010 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d DV |
1011 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
1012 | struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode; | |
a4fc5ed6 | 1013 | |
417e822d | 1014 | /* |
1a2eb460 | 1015 | * There are four kinds of DP registers: |
417e822d KP |
1016 | * |
1017 | * IBX PCH | |
1a2eb460 KP |
1018 | * SNB CPU |
1019 | * IVB CPU | |
417e822d KP |
1020 | * CPT PCH |
1021 | * | |
1022 | * IBX PCH and CPU are the same for almost everything, | |
1023 | * except that the CPU DP PLL is configured in this | |
1024 | * register | |
1025 | * | |
1026 | * CPT PCH is quite different, having many bits moved | |
1027 | * to the TRANS_DP_CTL register instead. That | |
1028 | * configuration happens (oddly) in ironlake_pch_enable | |
1029 | */ | |
9c9e7927 | 1030 | |
417e822d KP |
1031 | /* Preserve the BIOS-computed detected bit. This is |
1032 | * supposed to be read-only. | |
1033 | */ | |
1034 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 1035 | |
417e822d | 1036 | /* Handle DP bits in common between all three register formats */ |
417e822d | 1037 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 1038 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 1039 | |
9ed109a7 | 1040 | if (crtc->config.has_audio) { |
e0dac65e | 1041 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", |
7c62a164 | 1042 | pipe_name(crtc->pipe)); |
ea5b213a | 1043 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
b934223d | 1044 | intel_write_eld(&encoder->base, adjusted_mode); |
e0dac65e | 1045 | } |
247d89f6 | 1046 | |
417e822d | 1047 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 1048 | |
bc7d38a4 | 1049 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
1050 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
1051 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1052 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1053 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1054 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
1055 | ||
6aba5b6c | 1056 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
1a2eb460 KP |
1057 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1058 | ||
7c62a164 | 1059 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 1060 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 1061 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 1062 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
1063 | |
1064 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
1065 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
1066 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
1067 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
1068 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
1069 | ||
6aba5b6c | 1070 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) |
417e822d KP |
1071 | intel_dp->DP |= DP_ENHANCED_FRAMING; |
1072 | ||
44f37d1f CML |
1073 | if (!IS_CHERRYVIEW(dev)) { |
1074 | if (crtc->pipe == 1) | |
1075 | intel_dp->DP |= DP_PIPEB_SELECT; | |
1076 | } else { | |
1077 | intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe); | |
1078 | } | |
417e822d KP |
1079 | } else { |
1080 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 1081 | } |
a4fc5ed6 KP |
1082 | } |
1083 | ||
ffd6749d PZ |
1084 | #define IDLE_ON_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
1085 | #define IDLE_ON_VALUE (PP_ON | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
99ea7127 | 1086 | |
1a5ef5b7 PZ |
1087 | #define IDLE_OFF_MASK (PP_ON | PP_SEQUENCE_MASK | 0 | 0) |
1088 | #define IDLE_OFF_VALUE (0 | PP_SEQUENCE_NONE | 0 | 0) | |
99ea7127 | 1089 | |
ffd6749d PZ |
1090 | #define IDLE_CYCLE_MASK (PP_ON | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) |
1091 | #define IDLE_CYCLE_VALUE (0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
99ea7127 | 1092 | |
4be73780 | 1093 | static void wait_panel_status(struct intel_dp *intel_dp, |
99ea7127 KP |
1094 | u32 mask, |
1095 | u32 value) | |
bd943159 | 1096 | { |
30add22d | 1097 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 1098 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
1099 | u32 pp_stat_reg, pp_ctrl_reg; |
1100 | ||
bf13e81b JN |
1101 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1102 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
32ce697c | 1103 | |
99ea7127 | 1104 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
1105 | mask, value, |
1106 | I915_READ(pp_stat_reg), | |
1107 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1108 | |
453c5420 | 1109 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 1110 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
1111 | I915_READ(pp_stat_reg), |
1112 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 1113 | } |
54c136d4 CW |
1114 | |
1115 | DRM_DEBUG_KMS("Wait complete\n"); | |
99ea7127 | 1116 | } |
32ce697c | 1117 | |
4be73780 | 1118 | static void wait_panel_on(struct intel_dp *intel_dp) |
99ea7127 KP |
1119 | { |
1120 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
4be73780 | 1121 | wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); |
bd943159 KP |
1122 | } |
1123 | ||
4be73780 | 1124 | static void wait_panel_off(struct intel_dp *intel_dp) |
99ea7127 KP |
1125 | { |
1126 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
4be73780 | 1127 | wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); |
99ea7127 KP |
1128 | } |
1129 | ||
4be73780 | 1130 | static void wait_panel_power_cycle(struct intel_dp *intel_dp) |
99ea7127 KP |
1131 | { |
1132 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
dce56b3c PZ |
1133 | |
1134 | /* When we disable the VDD override bit last we have to do the manual | |
1135 | * wait. */ | |
1136 | wait_remaining_ms_from_jiffies(intel_dp->last_power_cycle, | |
1137 | intel_dp->panel_power_cycle_delay); | |
1138 | ||
4be73780 | 1139 | wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); |
99ea7127 KP |
1140 | } |
1141 | ||
4be73780 | 1142 | static void wait_backlight_on(struct intel_dp *intel_dp) |
dce56b3c PZ |
1143 | { |
1144 | wait_remaining_ms_from_jiffies(intel_dp->last_power_on, | |
1145 | intel_dp->backlight_on_delay); | |
1146 | } | |
1147 | ||
4be73780 | 1148 | static void edp_wait_backlight_off(struct intel_dp *intel_dp) |
dce56b3c PZ |
1149 | { |
1150 | wait_remaining_ms_from_jiffies(intel_dp->last_backlight_off, | |
1151 | intel_dp->backlight_off_delay); | |
1152 | } | |
99ea7127 | 1153 | |
832dd3c1 KP |
1154 | /* Read the current pp_control value, unlocking the register if it |
1155 | * is locked | |
1156 | */ | |
1157 | ||
453c5420 | 1158 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 1159 | { |
453c5420 JB |
1160 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1161 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1162 | u32 control; | |
832dd3c1 | 1163 | |
bf13e81b | 1164 | control = I915_READ(_pp_ctrl_reg(intel_dp)); |
832dd3c1 KP |
1165 | control &= ~PANEL_UNLOCK_MASK; |
1166 | control |= PANEL_UNLOCK_REGS; | |
1167 | return control; | |
bd943159 KP |
1168 | } |
1169 | ||
adddaaf4 | 1170 | static bool _edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1171 | { |
30add22d | 1172 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
4e6e1a54 ID |
1173 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1174 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
5d613501 | 1175 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1176 | enum intel_display_power_domain power_domain; |
5d613501 | 1177 | u32 pp; |
453c5420 | 1178 | u32 pp_stat_reg, pp_ctrl_reg; |
adddaaf4 | 1179 | bool need_to_disable = !intel_dp->want_panel_vdd; |
5d613501 | 1180 | |
97af61f5 | 1181 | if (!is_edp(intel_dp)) |
adddaaf4 | 1182 | return false; |
bd943159 KP |
1183 | |
1184 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1185 | |
4be73780 | 1186 | if (edp_have_panel_vdd(intel_dp)) |
adddaaf4 | 1187 | return need_to_disable; |
b0665d57 | 1188 | |
4e6e1a54 ID |
1189 | power_domain = intel_display_port_power_domain(intel_encoder); |
1190 | intel_display_power_get(dev_priv, power_domain); | |
e9cb81a2 | 1191 | |
b0665d57 | 1192 | DRM_DEBUG_KMS("Turning eDP VDD on\n"); |
bd943159 | 1193 | |
4be73780 DV |
1194 | if (!edp_have_panel_power(intel_dp)) |
1195 | wait_panel_power_cycle(intel_dp); | |
99ea7127 | 1196 | |
453c5420 | 1197 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1198 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1199 | |
bf13e81b JN |
1200 | pp_stat_reg = _pp_stat_reg(intel_dp); |
1201 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); | |
453c5420 JB |
1202 | |
1203 | I915_WRITE(pp_ctrl_reg, pp); | |
1204 | POSTING_READ(pp_ctrl_reg); | |
1205 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1206 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1207 | /* |
1208 | * If the panel wasn't on, delay before accessing aux channel | |
1209 | */ | |
4be73780 | 1210 | if (!edp_have_panel_power(intel_dp)) { |
bd943159 | 1211 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1212 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1213 | } |
adddaaf4 JN |
1214 | |
1215 | return need_to_disable; | |
1216 | } | |
1217 | ||
b80d6c78 | 1218 | void intel_edp_panel_vdd_on(struct intel_dp *intel_dp) |
adddaaf4 JN |
1219 | { |
1220 | if (is_edp(intel_dp)) { | |
1221 | bool vdd = _edp_panel_vdd_on(intel_dp); | |
1222 | ||
1223 | WARN(!vdd, "eDP VDD already requested on\n"); | |
1224 | } | |
5d613501 JB |
1225 | } |
1226 | ||
4be73780 | 1227 | static void edp_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1228 | { |
30add22d | 1229 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1230 | struct drm_i915_private *dev_priv = dev->dev_private; |
1231 | u32 pp; | |
453c5420 | 1232 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1233 | |
51fd371b | 1234 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
a0e99e68 | 1235 | |
4be73780 | 1236 | if (!intel_dp->want_panel_vdd && edp_have_panel_vdd(intel_dp)) { |
4e6e1a54 ID |
1237 | struct intel_digital_port *intel_dig_port = |
1238 | dp_to_dig_port(intel_dp); | |
1239 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
1240 | enum intel_display_power_domain power_domain; | |
1241 | ||
b0665d57 PZ |
1242 | DRM_DEBUG_KMS("Turning eDP VDD off\n"); |
1243 | ||
453c5420 | 1244 | pp = ironlake_get_pp_control(intel_dp); |
bd943159 | 1245 | pp &= ~EDP_FORCE_VDD; |
bd943159 | 1246 | |
9f08ef59 PZ |
1247 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
1248 | pp_stat_reg = _pp_stat_reg(intel_dp); | |
453c5420 JB |
1249 | |
1250 | I915_WRITE(pp_ctrl_reg, pp); | |
1251 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1252 | |
453c5420 JB |
1253 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1254 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1255 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
90791a5c PZ |
1256 | |
1257 | if ((pp & POWER_TARGET_ON) == 0) | |
dce56b3c | 1258 | intel_dp->last_power_cycle = jiffies; |
e9cb81a2 | 1259 | |
4e6e1a54 ID |
1260 | power_domain = intel_display_port_power_domain(intel_encoder); |
1261 | intel_display_power_put(dev_priv, power_domain); | |
bd943159 KP |
1262 | } |
1263 | } | |
5d613501 | 1264 | |
4be73780 | 1265 | static void edp_panel_vdd_work(struct work_struct *__work) |
bd943159 KP |
1266 | { |
1267 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1268 | struct intel_dp, panel_vdd_work); | |
30add22d | 1269 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bd943159 | 1270 | |
51fd371b | 1271 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 1272 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 1273 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
bd943159 KP |
1274 | } |
1275 | ||
aba86890 ID |
1276 | static void edp_panel_vdd_schedule_off(struct intel_dp *intel_dp) |
1277 | { | |
1278 | unsigned long delay; | |
1279 | ||
1280 | /* | |
1281 | * Queue the timer to fire a long time from now (relative to the power | |
1282 | * down delay) to keep the panel power up across a sequence of | |
1283 | * operations. | |
1284 | */ | |
1285 | delay = msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5); | |
1286 | schedule_delayed_work(&intel_dp->panel_vdd_work, delay); | |
1287 | } | |
1288 | ||
4be73780 | 1289 | static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1290 | { |
97af61f5 KP |
1291 | if (!is_edp(intel_dp)) |
1292 | return; | |
5d613501 | 1293 | |
bd943159 | 1294 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); |
f2e8b18a | 1295 | |
bd943159 KP |
1296 | intel_dp->want_panel_vdd = false; |
1297 | ||
aba86890 | 1298 | if (sync) |
4be73780 | 1299 | edp_panel_vdd_off_sync(intel_dp); |
aba86890 ID |
1300 | else |
1301 | edp_panel_vdd_schedule_off(intel_dp); | |
5d613501 JB |
1302 | } |
1303 | ||
4be73780 | 1304 | void intel_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1305 | { |
30add22d | 1306 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1307 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1308 | u32 pp; |
453c5420 | 1309 | u32 pp_ctrl_reg; |
9934c132 | 1310 | |
97af61f5 | 1311 | if (!is_edp(intel_dp)) |
bd943159 | 1312 | return; |
99ea7127 KP |
1313 | |
1314 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1315 | ||
4be73780 | 1316 | if (edp_have_panel_power(intel_dp)) { |
99ea7127 | 1317 | DRM_DEBUG_KMS("eDP power already on\n"); |
7d639f35 | 1318 | return; |
99ea7127 | 1319 | } |
9934c132 | 1320 | |
4be73780 | 1321 | wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1322 | |
bf13e81b | 1323 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1324 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1325 | if (IS_GEN5(dev)) { |
1326 | /* ILK workaround: disable reset around power sequence */ | |
1327 | pp &= ~PANEL_POWER_RESET; | |
bf13e81b JN |
1328 | I915_WRITE(pp_ctrl_reg, pp); |
1329 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1330 | } |
37c6c9b0 | 1331 | |
1c0ae80a | 1332 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1333 | if (!IS_GEN5(dev)) |
1334 | pp |= PANEL_POWER_RESET; | |
1335 | ||
453c5420 JB |
1336 | I915_WRITE(pp_ctrl_reg, pp); |
1337 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1338 | |
4be73780 | 1339 | wait_panel_on(intel_dp); |
dce56b3c | 1340 | intel_dp->last_power_on = jiffies; |
9934c132 | 1341 | |
05ce1a49 KP |
1342 | if (IS_GEN5(dev)) { |
1343 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
bf13e81b JN |
1344 | I915_WRITE(pp_ctrl_reg, pp); |
1345 | POSTING_READ(pp_ctrl_reg); | |
05ce1a49 | 1346 | } |
9934c132 JB |
1347 | } |
1348 | ||
4be73780 | 1349 | void intel_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1350 | { |
4e6e1a54 ID |
1351 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1352 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
30add22d | 1353 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1354 | struct drm_i915_private *dev_priv = dev->dev_private; |
4e6e1a54 | 1355 | enum intel_display_power_domain power_domain; |
99ea7127 | 1356 | u32 pp; |
453c5420 | 1357 | u32 pp_ctrl_reg; |
9934c132 | 1358 | |
97af61f5 KP |
1359 | if (!is_edp(intel_dp)) |
1360 | return; | |
37c6c9b0 | 1361 | |
99ea7127 | 1362 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1363 | |
24f3e092 JN |
1364 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
1365 | ||
453c5420 | 1366 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1367 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1368 | * panels get very unhappy and cease to work. */ | |
b3064154 PJ |
1369 | pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | |
1370 | EDP_BLC_ENABLE); | |
453c5420 | 1371 | |
bf13e81b | 1372 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 | 1373 | |
849e39f5 PZ |
1374 | intel_dp->want_panel_vdd = false; |
1375 | ||
453c5420 JB |
1376 | I915_WRITE(pp_ctrl_reg, pp); |
1377 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1378 | |
dce56b3c | 1379 | intel_dp->last_power_cycle = jiffies; |
4be73780 | 1380 | wait_panel_off(intel_dp); |
849e39f5 PZ |
1381 | |
1382 | /* We got a reference when we enabled the VDD. */ | |
4e6e1a54 ID |
1383 | power_domain = intel_display_port_power_domain(intel_encoder); |
1384 | intel_display_power_put(dev_priv, power_domain); | |
9934c132 JB |
1385 | } |
1386 | ||
4be73780 | 1387 | void intel_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1388 | { |
da63a9f2 PZ |
1389 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1390 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 ZW |
1391 | struct drm_i915_private *dev_priv = dev->dev_private; |
1392 | u32 pp; | |
453c5420 | 1393 | u32 pp_ctrl_reg; |
32f9d658 | 1394 | |
f01eca2e KP |
1395 | if (!is_edp(intel_dp)) |
1396 | return; | |
1397 | ||
28c97730 | 1398 | DRM_DEBUG_KMS("\n"); |
f7d2323c JB |
1399 | |
1400 | intel_panel_enable_backlight(intel_dp->attached_connector); | |
1401 | ||
01cb9ea6 JB |
1402 | /* |
1403 | * If we enable the backlight right away following a panel power | |
1404 | * on, we may see slight flicker as the panel syncs with the eDP | |
1405 | * link. So delay a bit to make sure the image is solid before | |
1406 | * allowing it to appear. | |
1407 | */ | |
4be73780 | 1408 | wait_backlight_on(intel_dp); |
453c5420 | 1409 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1410 | pp |= EDP_BLC_ENABLE; |
453c5420 | 1411 | |
bf13e81b | 1412 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1413 | |
1414 | I915_WRITE(pp_ctrl_reg, pp); | |
1415 | POSTING_READ(pp_ctrl_reg); | |
32f9d658 ZW |
1416 | } |
1417 | ||
4be73780 | 1418 | void intel_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1419 | { |
30add22d | 1420 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1421 | struct drm_i915_private *dev_priv = dev->dev_private; |
1422 | u32 pp; | |
453c5420 | 1423 | u32 pp_ctrl_reg; |
32f9d658 | 1424 | |
f01eca2e KP |
1425 | if (!is_edp(intel_dp)) |
1426 | return; | |
1427 | ||
28c97730 | 1428 | DRM_DEBUG_KMS("\n"); |
453c5420 | 1429 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1430 | pp &= ~EDP_BLC_ENABLE; |
453c5420 | 1431 | |
bf13e81b | 1432 | pp_ctrl_reg = _pp_ctrl_reg(intel_dp); |
453c5420 JB |
1433 | |
1434 | I915_WRITE(pp_ctrl_reg, pp); | |
1435 | POSTING_READ(pp_ctrl_reg); | |
dce56b3c | 1436 | intel_dp->last_backlight_off = jiffies; |
f7d2323c JB |
1437 | |
1438 | edp_wait_backlight_off(intel_dp); | |
1439 | ||
1440 | intel_panel_disable_backlight(intel_dp->attached_connector); | |
32f9d658 | 1441 | } |
a4fc5ed6 | 1442 | |
2bd2ad64 | 1443 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1444 | { |
da63a9f2 PZ |
1445 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1446 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1447 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1448 | struct drm_i915_private *dev_priv = dev->dev_private; |
1449 | u32 dpa_ctl; | |
1450 | ||
2bd2ad64 DV |
1451 | assert_pipe_disabled(dev_priv, |
1452 | to_intel_crtc(crtc)->pipe); | |
1453 | ||
d240f20f JB |
1454 | DRM_DEBUG_KMS("\n"); |
1455 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1456 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1457 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1458 | ||
1459 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1460 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1461 | * enable bits here to ensure that we don't enable too much. */ | |
1462 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1463 | intel_dp->DP |= DP_PLL_ENABLE; | |
1464 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1465 | POSTING_READ(DP_A); |
1466 | udelay(200); | |
d240f20f JB |
1467 | } |
1468 | ||
2bd2ad64 | 1469 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1470 | { |
da63a9f2 PZ |
1471 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1472 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1473 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1474 | struct drm_i915_private *dev_priv = dev->dev_private; |
1475 | u32 dpa_ctl; | |
1476 | ||
2bd2ad64 DV |
1477 | assert_pipe_disabled(dev_priv, |
1478 | to_intel_crtc(crtc)->pipe); | |
1479 | ||
d240f20f | 1480 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1481 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1482 | "dp pll off, should be on\n"); | |
1483 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1484 | ||
1485 | /* We can't rely on the value tracked for the DP register in | |
1486 | * intel_dp->DP because link_down must not change that (otherwise link | |
1487 | * re-training will fail. */ | |
298b0b39 | 1488 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1489 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1490 | POSTING_READ(DP_A); |
d240f20f JB |
1491 | udelay(200); |
1492 | } | |
1493 | ||
c7ad3810 | 1494 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1495 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1496 | { |
1497 | int ret, i; | |
1498 | ||
1499 | /* Should have a valid DPCD by this point */ | |
1500 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1501 | return; | |
1502 | ||
1503 | if (mode != DRM_MODE_DPMS_ON) { | |
9d1a1031 JN |
1504 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1505 | DP_SET_POWER_D3); | |
c7ad3810 JB |
1506 | if (ret != 1) |
1507 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1508 | } else { | |
1509 | /* | |
1510 | * When turning on, we need to retry for 1ms to give the sink | |
1511 | * time to wake up. | |
1512 | */ | |
1513 | for (i = 0; i < 3; i++) { | |
9d1a1031 JN |
1514 | ret = drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, |
1515 | DP_SET_POWER_D0); | |
c7ad3810 JB |
1516 | if (ret == 1) |
1517 | break; | |
1518 | msleep(1); | |
1519 | } | |
1520 | } | |
1521 | } | |
1522 | ||
19d8fe15 DV |
1523 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1524 | enum pipe *pipe) | |
d240f20f | 1525 | { |
19d8fe15 | 1526 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1527 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1528 | struct drm_device *dev = encoder->base.dev; |
1529 | struct drm_i915_private *dev_priv = dev->dev_private; | |
6d129bea ID |
1530 | enum intel_display_power_domain power_domain; |
1531 | u32 tmp; | |
1532 | ||
1533 | power_domain = intel_display_port_power_domain(encoder); | |
1534 | if (!intel_display_power_enabled(dev_priv, power_domain)) | |
1535 | return false; | |
1536 | ||
1537 | tmp = I915_READ(intel_dp->output_reg); | |
19d8fe15 DV |
1538 | |
1539 | if (!(tmp & DP_PORT_EN)) | |
1540 | return false; | |
1541 | ||
bc7d38a4 | 1542 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1543 | *pipe = PORT_TO_PIPE_CPT(tmp); |
71485e0a VS |
1544 | } else if (IS_CHERRYVIEW(dev)) { |
1545 | *pipe = DP_PORT_TO_PIPE_CHV(tmp); | |
bc7d38a4 | 1546 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1547 | *pipe = PORT_TO_PIPE(tmp); |
1548 | } else { | |
1549 | u32 trans_sel; | |
1550 | u32 trans_dp; | |
1551 | int i; | |
1552 | ||
1553 | switch (intel_dp->output_reg) { | |
1554 | case PCH_DP_B: | |
1555 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1556 | break; | |
1557 | case PCH_DP_C: | |
1558 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1559 | break; | |
1560 | case PCH_DP_D: | |
1561 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1562 | break; | |
1563 | default: | |
1564 | return true; | |
1565 | } | |
1566 | ||
1567 | for_each_pipe(i) { | |
1568 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1569 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1570 | *pipe = i; | |
1571 | return true; | |
1572 | } | |
1573 | } | |
19d8fe15 | 1574 | |
4a0833ec DV |
1575 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1576 | intel_dp->output_reg); | |
1577 | } | |
d240f20f | 1578 | |
19d8fe15 DV |
1579 | return true; |
1580 | } | |
d240f20f | 1581 | |
045ac3b5 JB |
1582 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1583 | struct intel_crtc_config *pipe_config) | |
1584 | { | |
1585 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1586 | u32 tmp, flags = 0; |
63000ef6 XZ |
1587 | struct drm_device *dev = encoder->base.dev; |
1588 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1589 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1590 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
18442d08 | 1591 | int dotclock; |
045ac3b5 | 1592 | |
9ed109a7 DV |
1593 | tmp = I915_READ(intel_dp->output_reg); |
1594 | if (tmp & DP_AUDIO_OUTPUT_ENABLE) | |
1595 | pipe_config->has_audio = true; | |
1596 | ||
63000ef6 | 1597 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
63000ef6 XZ |
1598 | if (tmp & DP_SYNC_HS_HIGH) |
1599 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1600 | else | |
1601 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1602 | |
63000ef6 XZ |
1603 | if (tmp & DP_SYNC_VS_HIGH) |
1604 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1605 | else | |
1606 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1607 | } else { | |
1608 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1609 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1610 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1611 | else | |
1612 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1613 | |
63000ef6 XZ |
1614 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1615 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1616 | else | |
1617 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1618 | } | |
045ac3b5 JB |
1619 | |
1620 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc | 1621 | |
eb14cb74 VS |
1622 | pipe_config->has_dp_encoder = true; |
1623 | ||
1624 | intel_dp_get_m_n(crtc, pipe_config); | |
1625 | ||
18442d08 | 1626 | if (port == PORT_A) { |
f1f644dc JB |
1627 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) |
1628 | pipe_config->port_clock = 162000; | |
1629 | else | |
1630 | pipe_config->port_clock = 270000; | |
1631 | } | |
18442d08 VS |
1632 | |
1633 | dotclock = intel_dotclock_calculate(pipe_config->port_clock, | |
1634 | &pipe_config->dp_m_n); | |
1635 | ||
1636 | if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A) | |
1637 | ironlake_check_encoder_dotclock(pipe_config, dotclock); | |
1638 | ||
241bfc38 | 1639 | pipe_config->adjusted_mode.crtc_clock = dotclock; |
7f16e5c1 | 1640 | |
c6cd2ee2 JN |
1641 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && |
1642 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1643 | /* | |
1644 | * This is a big fat ugly hack. | |
1645 | * | |
1646 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1647 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1648 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1649 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1650 | * max, not what it tells us to use. | |
1651 | * | |
1652 | * Note: This will still be broken if the eDP panel is not lit | |
1653 | * up by the BIOS, and thus we can't get the mode at module | |
1654 | * load. | |
1655 | */ | |
1656 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1657 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1658 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1659 | } | |
045ac3b5 JB |
1660 | } |
1661 | ||
34eb7579 | 1662 | static bool is_edp_psr(struct intel_dp *intel_dp) |
2293bb5c | 1663 | { |
34eb7579 | 1664 | return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; |
2293bb5c SK |
1665 | } |
1666 | ||
2b28bb1b RV |
1667 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1668 | { | |
1669 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1670 | ||
18b5992c | 1671 | if (!HAS_PSR(dev)) |
2b28bb1b RV |
1672 | return false; |
1673 | ||
18b5992c | 1674 | return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE; |
2b28bb1b RV |
1675 | } |
1676 | ||
1677 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1678 | struct edp_vsc_psr *vsc_psr) | |
1679 | { | |
1680 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1681 | struct drm_device *dev = dig_port->base.base.dev; | |
1682 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1683 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1684 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1685 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1686 | uint32_t *data = (uint32_t *) vsc_psr; | |
1687 | unsigned int i; | |
1688 | ||
1689 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1690 | the video DIP being updated before program video DIP data buffer | |
1691 | registers for DIP being updated. */ | |
1692 | I915_WRITE(ctl_reg, 0); | |
1693 | POSTING_READ(ctl_reg); | |
1694 | ||
1695 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1696 | if (i < sizeof(struct edp_vsc_psr)) | |
1697 | I915_WRITE(data_reg + i, *data++); | |
1698 | else | |
1699 | I915_WRITE(data_reg + i, 0); | |
1700 | } | |
1701 | ||
1702 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1703 | POSTING_READ(ctl_reg); | |
1704 | } | |
1705 | ||
1706 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
1707 | { | |
1708 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1709 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1710 | struct edp_vsc_psr psr_vsc; | |
1711 | ||
2b28bb1b RV |
1712 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ |
1713 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
1714 | psr_vsc.sdp_header.HB0 = 0; | |
1715 | psr_vsc.sdp_header.HB1 = 0x7; | |
1716 | psr_vsc.sdp_header.HB2 = 0x2; | |
1717 | psr_vsc.sdp_header.HB3 = 0x8; | |
1718 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
1719 | ||
1720 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
18b5992c | 1721 | I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP | |
0cc4b699 | 1722 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); |
2b28bb1b RV |
1723 | } |
1724 | ||
1725 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
1726 | { | |
0e0ae652 RV |
1727 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1728 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b | 1729 | struct drm_i915_private *dev_priv = dev->dev_private; |
ec5b01dd | 1730 | uint32_t aux_clock_divider; |
2b28bb1b RV |
1731 | int precharge = 0x3; |
1732 | int msg_size = 5; /* Header(4) + Message(1) */ | |
0e0ae652 | 1733 | bool only_standby = false; |
2b28bb1b | 1734 | |
ec5b01dd DL |
1735 | aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0); |
1736 | ||
0e0ae652 RV |
1737 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) |
1738 | only_standby = true; | |
1739 | ||
2b28bb1b | 1740 | /* Enable PSR in sink */ |
0e0ae652 | 1741 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) |
9d1a1031 JN |
1742 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
1743 | DP_PSR_ENABLE & ~DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b | 1744 | else |
9d1a1031 JN |
1745 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, |
1746 | DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE); | |
2b28bb1b RV |
1747 | |
1748 | /* Setup AUX registers */ | |
18b5992c BW |
1749 | I915_WRITE(EDP_PSR_AUX_DATA1(dev), EDP_PSR_DPCD_COMMAND); |
1750 | I915_WRITE(EDP_PSR_AUX_DATA2(dev), EDP_PSR_DPCD_NORMAL_OPERATION); | |
1751 | I915_WRITE(EDP_PSR_AUX_CTL(dev), | |
2b28bb1b RV |
1752 | DP_AUX_CH_CTL_TIME_OUT_400us | |
1753 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
1754 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
1755 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
1756 | } | |
1757 | ||
1758 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
1759 | { | |
0e0ae652 RV |
1760 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
1761 | struct drm_device *dev = dig_port->base.base.dev; | |
2b28bb1b RV |
1762 | struct drm_i915_private *dev_priv = dev->dev_private; |
1763 | uint32_t max_sleep_time = 0x1f; | |
1764 | uint32_t idle_frames = 1; | |
1765 | uint32_t val = 0x0; | |
ed8546ac | 1766 | const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; |
0e0ae652 RV |
1767 | bool only_standby = false; |
1768 | ||
1769 | if (IS_BROADWELL(dev) && dig_port->port != PORT_A) | |
1770 | only_standby = true; | |
2b28bb1b | 1771 | |
0e0ae652 | 1772 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT || only_standby) { |
2b28bb1b RV |
1773 | val |= EDP_PSR_LINK_STANDBY; |
1774 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
1775 | val |= EDP_PSR_TP1_TIME_0us; | |
1776 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
82c56254 | 1777 | val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0; |
2b28bb1b RV |
1778 | } else |
1779 | val |= EDP_PSR_LINK_DISABLE; | |
1780 | ||
18b5992c | 1781 | I915_WRITE(EDP_PSR_CTL(dev), val | |
24bd9bf5 | 1782 | (IS_BROADWELL(dev) ? 0 : link_entry_time) | |
2b28bb1b RV |
1783 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | |
1784 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
1785 | EDP_PSR_ENABLE); | |
1786 | } | |
1787 | ||
3f51e471 RV |
1788 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
1789 | { | |
1790 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1791 | struct drm_device *dev = dig_port->base.base.dev; | |
1792 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1793 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
1794 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3f51e471 | 1795 | |
f0355c4a | 1796 | lockdep_assert_held(&dev_priv->psr.lock); |
f0355c4a DV |
1797 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
1798 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1799 | ||
a031d709 RV |
1800 | dev_priv->psr.source_ok = false; |
1801 | ||
9ca15301 | 1802 | if (IS_HASWELL(dev) && dig_port->port != PORT_A) { |
3f51e471 | 1803 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); |
3f51e471 RV |
1804 | return false; |
1805 | } | |
1806 | ||
d330a953 | 1807 | if (!i915.enable_psr) { |
105b7c11 | 1808 | DRM_DEBUG_KMS("PSR disable by flag\n"); |
105b7c11 RV |
1809 | return false; |
1810 | } | |
1811 | ||
4c8c7000 RV |
1812 | /* Below limitations aren't valid for Broadwell */ |
1813 | if (IS_BROADWELL(dev)) | |
1814 | goto out; | |
1815 | ||
3f51e471 RV |
1816 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & |
1817 | S3D_ENABLE) { | |
1818 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
3f51e471 RV |
1819 | return false; |
1820 | } | |
1821 | ||
ca73b4f0 | 1822 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { |
3f51e471 | 1823 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); |
3f51e471 RV |
1824 | return false; |
1825 | } | |
1826 | ||
4c8c7000 | 1827 | out: |
a031d709 | 1828 | dev_priv->psr.source_ok = true; |
3f51e471 RV |
1829 | return true; |
1830 | } | |
1831 | ||
3d739d92 | 1832 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b | 1833 | { |
7c8f8a70 RV |
1834 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1835 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
1836 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2b28bb1b | 1837 | |
3638379c DV |
1838 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); |
1839 | WARN_ON(dev_priv->psr.active); | |
f0355c4a | 1840 | lockdep_assert_held(&dev_priv->psr.lock); |
2b28bb1b | 1841 | |
2b28bb1b RV |
1842 | /* Enable PSR on the panel */ |
1843 | intel_edp_psr_enable_sink(intel_dp); | |
1844 | ||
1845 | /* Enable PSR on the host */ | |
1846 | intel_edp_psr_enable_source(intel_dp); | |
7c8f8a70 | 1847 | |
7c8f8a70 | 1848 | dev_priv->psr.active = true; |
2b28bb1b RV |
1849 | } |
1850 | ||
3d739d92 RV |
1851 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
1852 | { | |
1853 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
109fc2ad | 1854 | struct drm_i915_private *dev_priv = dev->dev_private; |
3d739d92 | 1855 | |
4704c573 RV |
1856 | if (!HAS_PSR(dev)) { |
1857 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
1858 | return; | |
1859 | } | |
1860 | ||
34eb7579 RV |
1861 | if (!is_edp_psr(intel_dp)) { |
1862 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
1863 | return; | |
1864 | } | |
1865 | ||
f0355c4a | 1866 | mutex_lock(&dev_priv->psr.lock); |
109fc2ad DV |
1867 | if (dev_priv->psr.enabled) { |
1868 | DRM_DEBUG_KMS("PSR already in use\n"); | |
f0355c4a | 1869 | mutex_unlock(&dev_priv->psr.lock); |
109fc2ad DV |
1870 | return; |
1871 | } | |
1872 | ||
9ca15301 DV |
1873 | dev_priv->psr.busy_frontbuffer_bits = 0; |
1874 | ||
16487254 RV |
1875 | /* Setup PSR once */ |
1876 | intel_edp_psr_setup(intel_dp); | |
1877 | ||
7c8f8a70 | 1878 | if (intel_edp_psr_match_conditions(intel_dp)) |
9ca15301 | 1879 | dev_priv->psr.enabled = intel_dp; |
f0355c4a | 1880 | mutex_unlock(&dev_priv->psr.lock); |
3d739d92 RV |
1881 | } |
1882 | ||
2b28bb1b RV |
1883 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
1884 | { | |
1885 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1886 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1887 | ||
f0355c4a DV |
1888 | mutex_lock(&dev_priv->psr.lock); |
1889 | if (!dev_priv->psr.enabled) { | |
1890 | mutex_unlock(&dev_priv->psr.lock); | |
1891 | return; | |
1892 | } | |
1893 | ||
3638379c DV |
1894 | if (dev_priv->psr.active) { |
1895 | I915_WRITE(EDP_PSR_CTL(dev), | |
1896 | I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE); | |
1897 | ||
1898 | /* Wait till PSR is idle */ | |
1899 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) & | |
1900 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
1901 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
2b28bb1b | 1902 | |
3638379c DV |
1903 | dev_priv->psr.active = false; |
1904 | } else { | |
1905 | WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE); | |
1906 | } | |
7c8f8a70 | 1907 | |
2807cf69 | 1908 | dev_priv->psr.enabled = NULL; |
f0355c4a | 1909 | mutex_unlock(&dev_priv->psr.lock); |
9ca15301 DV |
1910 | |
1911 | cancel_delayed_work_sync(&dev_priv->psr.work); | |
2b28bb1b RV |
1912 | } |
1913 | ||
f02a326e | 1914 | static void intel_edp_psr_work(struct work_struct *work) |
7c8f8a70 RV |
1915 | { |
1916 | struct drm_i915_private *dev_priv = | |
1917 | container_of(work, typeof(*dev_priv), psr.work.work); | |
2807cf69 DV |
1918 | struct intel_dp *intel_dp = dev_priv->psr.enabled; |
1919 | ||
f0355c4a DV |
1920 | mutex_lock(&dev_priv->psr.lock); |
1921 | intel_dp = dev_priv->psr.enabled; | |
1922 | ||
2807cf69 | 1923 | if (!intel_dp) |
f0355c4a | 1924 | goto unlock; |
2807cf69 | 1925 | |
9ca15301 DV |
1926 | /* |
1927 | * The delayed work can race with an invalidate hence we need to | |
1928 | * recheck. Since psr_flush first clears this and then reschedules we | |
1929 | * won't ever miss a flush when bailing out here. | |
1930 | */ | |
1931 | if (dev_priv->psr.busy_frontbuffer_bits) | |
1932 | goto unlock; | |
1933 | ||
1934 | intel_edp_psr_do_enable(intel_dp); | |
f0355c4a DV |
1935 | unlock: |
1936 | mutex_unlock(&dev_priv->psr.lock); | |
3d739d92 RV |
1937 | } |
1938 | ||
9ca15301 | 1939 | static void intel_edp_psr_do_exit(struct drm_device *dev) |
7c8f8a70 RV |
1940 | { |
1941 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1942 | ||
3638379c DV |
1943 | if (dev_priv->psr.active) { |
1944 | u32 val = I915_READ(EDP_PSR_CTL(dev)); | |
1945 | ||
1946 | WARN_ON(!(val & EDP_PSR_ENABLE)); | |
1947 | ||
1948 | I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE); | |
1949 | ||
1950 | dev_priv->psr.active = false; | |
1951 | } | |
7c8f8a70 | 1952 | |
9ca15301 DV |
1953 | } |
1954 | ||
1955 | void intel_edp_psr_invalidate(struct drm_device *dev, | |
1956 | unsigned frontbuffer_bits) | |
1957 | { | |
1958 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1959 | struct drm_crtc *crtc; | |
1960 | enum pipe pipe; | |
1961 | ||
9ca15301 DV |
1962 | mutex_lock(&dev_priv->psr.lock); |
1963 | if (!dev_priv->psr.enabled) { | |
1964 | mutex_unlock(&dev_priv->psr.lock); | |
1965 | return; | |
1966 | } | |
1967 | ||
1968 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
1969 | pipe = to_intel_crtc(crtc)->pipe; | |
1970 | ||
1971 | intel_edp_psr_do_exit(dev); | |
1972 | ||
1973 | frontbuffer_bits &= INTEL_FRONTBUFFER_ALL_MASK(pipe); | |
1974 | ||
1975 | dev_priv->psr.busy_frontbuffer_bits |= frontbuffer_bits; | |
1976 | mutex_unlock(&dev_priv->psr.lock); | |
1977 | } | |
1978 | ||
1979 | void intel_edp_psr_flush(struct drm_device *dev, | |
1980 | unsigned frontbuffer_bits) | |
1981 | { | |
1982 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1983 | struct drm_crtc *crtc; | |
1984 | enum pipe pipe; | |
1985 | ||
9ca15301 DV |
1986 | mutex_lock(&dev_priv->psr.lock); |
1987 | if (!dev_priv->psr.enabled) { | |
1988 | mutex_unlock(&dev_priv->psr.lock); | |
1989 | return; | |
1990 | } | |
1991 | ||
1992 | crtc = dp_to_dig_port(dev_priv->psr.enabled)->base.base.crtc; | |
1993 | pipe = to_intel_crtc(crtc)->pipe; | |
1994 | dev_priv->psr.busy_frontbuffer_bits &= ~frontbuffer_bits; | |
1995 | ||
1996 | /* | |
1997 | * On Haswell sprite plane updates don't result in a psr invalidating | |
1998 | * signal in the hardware. Which means we need to manually fake this in | |
1999 | * software for all flushes, not just when we've seen a preceding | |
2000 | * invalidation through frontbuffer rendering. | |
2001 | */ | |
2002 | if (IS_HASWELL(dev) && | |
2003 | (frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe))) | |
2004 | intel_edp_psr_do_exit(dev); | |
2005 | ||
2006 | if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits) | |
2007 | schedule_delayed_work(&dev_priv->psr.work, | |
2008 | msecs_to_jiffies(100)); | |
f0355c4a | 2009 | mutex_unlock(&dev_priv->psr.lock); |
7c8f8a70 RV |
2010 | } |
2011 | ||
2012 | void intel_edp_psr_init(struct drm_device *dev) | |
2013 | { | |
2014 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2015 | ||
7c8f8a70 | 2016 | INIT_DELAYED_WORK(&dev_priv->psr.work, intel_edp_psr_work); |
f0355c4a | 2017 | mutex_init(&dev_priv->psr.lock); |
7c8f8a70 RV |
2018 | } |
2019 | ||
e8cb4558 | 2020 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2021 | { |
e8cb4558 | 2022 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
2023 | enum port port = dp_to_dig_port(intel_dp)->port; |
2024 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
2025 | |
2026 | /* Make sure the panel is off before trying to change the mode. But also | |
2027 | * ensure that we have vdd while we switch off the panel. */ | |
24f3e092 | 2028 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 2029 | intel_edp_backlight_off(intel_dp); |
fdbc3b1f | 2030 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
4be73780 | 2031 | intel_edp_panel_off(intel_dp); |
3739850b DV |
2032 | |
2033 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 2034 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 2035 | intel_dp_link_down(intel_dp); |
d240f20f JB |
2036 | } |
2037 | ||
49277c31 | 2038 | static void g4x_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 2039 | { |
2bd2ad64 | 2040 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 2041 | enum port port = dp_to_dig_port(intel_dp)->port; |
2bd2ad64 | 2042 | |
49277c31 VS |
2043 | if (port != PORT_A) |
2044 | return; | |
2045 | ||
2046 | intel_dp_link_down(intel_dp); | |
2047 | ironlake_edp_pll_off(intel_dp); | |
2048 | } | |
2049 | ||
2050 | static void vlv_post_disable_dp(struct intel_encoder *encoder) | |
2051 | { | |
2052 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2053 | ||
2054 | intel_dp_link_down(intel_dp); | |
2bd2ad64 DV |
2055 | } |
2056 | ||
580d3811 VS |
2057 | static void chv_post_disable_dp(struct intel_encoder *encoder) |
2058 | { | |
2059 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2060 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2061 | struct drm_device *dev = encoder->base.dev; | |
2062 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2063 | struct intel_crtc *intel_crtc = | |
2064 | to_intel_crtc(encoder->base.crtc); | |
2065 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2066 | enum pipe pipe = intel_crtc->pipe; | |
2067 | u32 val; | |
2068 | ||
2069 | intel_dp_link_down(intel_dp); | |
2070 | ||
2071 | mutex_lock(&dev_priv->dpio_lock); | |
2072 | ||
2073 | /* Propagate soft reset to data lane reset */ | |
97fd4d5c | 2074 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2075 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c | 2076 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
d2152b25 | 2077 | |
97fd4d5c VS |
2078 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); |
2079 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2080 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2081 | ||
2082 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2083 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2084 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
2085 | ||
2086 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); | |
580d3811 | 2087 | val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2088 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
580d3811 VS |
2089 | |
2090 | mutex_unlock(&dev_priv->dpio_lock); | |
2091 | } | |
2092 | ||
e8cb4558 | 2093 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 2094 | { |
e8cb4558 DV |
2095 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2096 | struct drm_device *dev = encoder->base.dev; | |
2097 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2098 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 2099 | |
0c33d8d7 DV |
2100 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
2101 | return; | |
5d613501 | 2102 | |
24f3e092 | 2103 | intel_edp_panel_vdd_on(intel_dp); |
f01eca2e | 2104 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 2105 | intel_dp_start_link_train(intel_dp); |
4be73780 DV |
2106 | intel_edp_panel_on(intel_dp); |
2107 | edp_panel_vdd_off(intel_dp, true); | |
33a34e4e | 2108 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 2109 | intel_dp_stop_link_train(intel_dp); |
ab1f90f9 | 2110 | } |
89b667f8 | 2111 | |
ecff4f3b JN |
2112 | static void g4x_enable_dp(struct intel_encoder *encoder) |
2113 | { | |
828f5c6e JN |
2114 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2115 | ||
ecff4f3b | 2116 | intel_enable_dp(encoder); |
4be73780 | 2117 | intel_edp_backlight_on(intel_dp); |
ab1f90f9 | 2118 | } |
89b667f8 | 2119 | |
ab1f90f9 JN |
2120 | static void vlv_enable_dp(struct intel_encoder *encoder) |
2121 | { | |
828f5c6e JN |
2122 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
2123 | ||
4be73780 | 2124 | intel_edp_backlight_on(intel_dp); |
d240f20f JB |
2125 | } |
2126 | ||
ecff4f3b | 2127 | static void g4x_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
2128 | { |
2129 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2130 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2131 | ||
8ac33ed3 DV |
2132 | intel_dp_prepare(encoder); |
2133 | ||
d41f1efb DV |
2134 | /* Only ilk+ has port A */ |
2135 | if (dport->port == PORT_A) { | |
2136 | ironlake_set_pll_cpu_edp(intel_dp); | |
ab1f90f9 | 2137 | ironlake_edp_pll_on(intel_dp); |
d41f1efb | 2138 | } |
ab1f90f9 JN |
2139 | } |
2140 | ||
2141 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) | |
a4fc5ed6 | 2142 | { |
2bd2ad64 | 2143 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 2144 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 2145 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 2146 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 | 2147 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
e4607fcf | 2148 | enum dpio_channel port = vlv_dport_to_channel(dport); |
ab1f90f9 | 2149 | int pipe = intel_crtc->pipe; |
bf13e81b | 2150 | struct edp_power_seq power_seq; |
ab1f90f9 | 2151 | u32 val; |
a4fc5ed6 | 2152 | |
ab1f90f9 | 2153 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 2154 | |
ab3c759a | 2155 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port)); |
ab1f90f9 JN |
2156 | val = 0; |
2157 | if (pipe) | |
2158 | val |= (1<<21); | |
2159 | else | |
2160 | val &= ~(1<<21); | |
2161 | val |= 0x001000c4; | |
ab3c759a CML |
2162 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW8(port), val); |
2163 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018); | |
2164 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888); | |
89b667f8 | 2165 | |
ab1f90f9 JN |
2166 | mutex_unlock(&dev_priv->dpio_lock); |
2167 | ||
2cac613b ID |
2168 | if (is_edp(intel_dp)) { |
2169 | /* init power sequencer on this pipe and port */ | |
2170 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2171 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2172 | &power_seq); | |
2173 | } | |
bf13e81b | 2174 | |
ab1f90f9 JN |
2175 | intel_enable_dp(encoder); |
2176 | ||
e4607fcf | 2177 | vlv_wait_port_ready(dev_priv, dport); |
89b667f8 JB |
2178 | } |
2179 | ||
ecff4f3b | 2180 | static void vlv_dp_pre_pll_enable(struct intel_encoder *encoder) |
89b667f8 JB |
2181 | { |
2182 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2183 | struct drm_device *dev = encoder->base.dev; | |
2184 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5e69f97f CML |
2185 | struct intel_crtc *intel_crtc = |
2186 | to_intel_crtc(encoder->base.crtc); | |
e4607fcf | 2187 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2188 | int pipe = intel_crtc->pipe; |
89b667f8 | 2189 | |
8ac33ed3 DV |
2190 | intel_dp_prepare(encoder); |
2191 | ||
89b667f8 | 2192 | /* Program Tx lane resets to default */ |
0980a60f | 2193 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a | 2194 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), |
89b667f8 JB |
2195 | DPIO_PCS_TX_LANE2_RESET | |
2196 | DPIO_PCS_TX_LANE1_RESET); | |
ab3c759a | 2197 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), |
89b667f8 JB |
2198 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
2199 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
2200 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
2201 | DPIO_PCS_CLK_SOFT_RESET); | |
2202 | ||
2203 | /* Fix up inter-pair skew failure */ | |
ab3c759a CML |
2204 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00); |
2205 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500); | |
2206 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000); | |
0980a60f | 2207 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
2208 | } |
2209 | ||
e4a1d846 CML |
2210 | static void chv_pre_enable_dp(struct intel_encoder *encoder) |
2211 | { | |
2212 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
2213 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2214 | struct drm_device *dev = encoder->base.dev; | |
2215 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2216 | struct edp_power_seq power_seq; | |
2217 | struct intel_crtc *intel_crtc = | |
2218 | to_intel_crtc(encoder->base.crtc); | |
2219 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2220 | int pipe = intel_crtc->pipe; | |
2221 | int data, i; | |
949c1d43 | 2222 | u32 val; |
e4a1d846 | 2223 | |
e4a1d846 | 2224 | mutex_lock(&dev_priv->dpio_lock); |
949c1d43 VS |
2225 | |
2226 | /* Deassert soft data lane reset*/ | |
97fd4d5c | 2227 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); |
d2152b25 | 2228 | val |= CHV_PCS_REQ_SOFTRESET_EN; |
97fd4d5c VS |
2229 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); |
2230 | ||
2231 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); | |
2232 | val |= CHV_PCS_REQ_SOFTRESET_EN; | |
2233 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); | |
2234 | ||
2235 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); | |
2236 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); | |
2237 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); | |
d2152b25 | 2238 | |
97fd4d5c | 2239 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); |
949c1d43 | 2240 | val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); |
97fd4d5c | 2241 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); |
949c1d43 VS |
2242 | |
2243 | /* Program Tx lane latency optimal setting*/ | |
e4a1d846 CML |
2244 | for (i = 0; i < 4; i++) { |
2245 | /* Set the latency optimal bit */ | |
2246 | data = (i == 1) ? 0x0 : 0x6; | |
2247 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW11(ch, i), | |
2248 | data << DPIO_FRC_LATENCY_SHFIT); | |
2249 | ||
2250 | /* Set the upar bit */ | |
2251 | data = (i == 1) ? 0x0 : 0x1; | |
2252 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW14(ch, i), | |
2253 | data << DPIO_UPAR_SHIFT); | |
2254 | } | |
2255 | ||
2256 | /* Data lane stagger programming */ | |
2257 | /* FIXME: Fix up value only after power analysis */ | |
2258 | ||
2259 | mutex_unlock(&dev_priv->dpio_lock); | |
2260 | ||
2261 | if (is_edp(intel_dp)) { | |
2262 | /* init power sequencer on this pipe and port */ | |
2263 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
2264 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
2265 | &power_seq); | |
2266 | } | |
2267 | ||
2268 | intel_enable_dp(encoder); | |
2269 | ||
2270 | vlv_wait_port_ready(dev_priv, dport); | |
2271 | } | |
2272 | ||
9197c88b VS |
2273 | static void chv_dp_pre_pll_enable(struct intel_encoder *encoder) |
2274 | { | |
2275 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
2276 | struct drm_device *dev = encoder->base.dev; | |
2277 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2278 | struct intel_crtc *intel_crtc = | |
2279 | to_intel_crtc(encoder->base.crtc); | |
2280 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
2281 | enum pipe pipe = intel_crtc->pipe; | |
2282 | u32 val; | |
2283 | ||
2284 | mutex_lock(&dev_priv->dpio_lock); | |
2285 | ||
b9e5ac3c VS |
2286 | /* program left/right clock distribution */ |
2287 | if (pipe != PIPE_B) { | |
2288 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0); | |
2289 | val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK); | |
2290 | if (ch == DPIO_CH0) | |
2291 | val |= CHV_BUFLEFTENA1_FORCE; | |
2292 | if (ch == DPIO_CH1) | |
2293 | val |= CHV_BUFRIGHTENA1_FORCE; | |
2294 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val); | |
2295 | } else { | |
2296 | val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1); | |
2297 | val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK); | |
2298 | if (ch == DPIO_CH0) | |
2299 | val |= CHV_BUFLEFTENA2_FORCE; | |
2300 | if (ch == DPIO_CH1) | |
2301 | val |= CHV_BUFRIGHTENA2_FORCE; | |
2302 | vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val); | |
2303 | } | |
2304 | ||
9197c88b VS |
2305 | /* program clock channel usage */ |
2306 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch)); | |
2307 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2308 | if (pipe != PIPE_B) | |
2309 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2310 | else | |
2311 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2312 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW8(ch), val); | |
2313 | ||
2314 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW8(ch)); | |
2315 | val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE; | |
2316 | if (pipe != PIPE_B) | |
2317 | val &= ~CHV_PCS_USEDCLKCHANNEL; | |
2318 | else | |
2319 | val |= CHV_PCS_USEDCLKCHANNEL; | |
2320 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW8(ch), val); | |
2321 | ||
2322 | /* | |
2323 | * This a a bit weird since generally CL | |
2324 | * matches the pipe, but here we need to | |
2325 | * pick the CL based on the port. | |
2326 | */ | |
2327 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW19(ch)); | |
2328 | if (pipe != PIPE_B) | |
2329 | val &= ~CHV_CMN_USEDCLKCHANNEL; | |
2330 | else | |
2331 | val |= CHV_CMN_USEDCLKCHANNEL; | |
2332 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val); | |
2333 | ||
2334 | mutex_unlock(&dev_priv->dpio_lock); | |
2335 | } | |
2336 | ||
a4fc5ed6 | 2337 | /* |
df0c237d JB |
2338 | * Native read with retry for link status and receiver capability reads for |
2339 | * cases where the sink may still be asleep. | |
9d1a1031 JN |
2340 | * |
2341 | * Sinks are *supposed* to come up within 1ms from an off state, but we're also | |
2342 | * supposed to retry 3 times per the spec. | |
a4fc5ed6 | 2343 | */ |
9d1a1031 JN |
2344 | static ssize_t |
2345 | intel_dp_dpcd_read_wake(struct drm_dp_aux *aux, unsigned int offset, | |
2346 | void *buffer, size_t size) | |
a4fc5ed6 | 2347 | { |
9d1a1031 JN |
2348 | ssize_t ret; |
2349 | int i; | |
61da5fab | 2350 | |
61da5fab | 2351 | for (i = 0; i < 3; i++) { |
9d1a1031 JN |
2352 | ret = drm_dp_dpcd_read(aux, offset, buffer, size); |
2353 | if (ret == size) | |
2354 | return ret; | |
61da5fab JB |
2355 | msleep(1); |
2356 | } | |
a4fc5ed6 | 2357 | |
9d1a1031 | 2358 | return ret; |
a4fc5ed6 KP |
2359 | } |
2360 | ||
2361 | /* | |
2362 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
2363 | * link status information | |
2364 | */ | |
2365 | static bool | |
93f62dad | 2366 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 2367 | { |
9d1a1031 JN |
2368 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
2369 | DP_LANE0_1_STATUS, | |
2370 | link_status, | |
2371 | DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE; | |
a4fc5ed6 KP |
2372 | } |
2373 | ||
1100244e | 2374 | /* These are source-specific values. */ |
a4fc5ed6 | 2375 | static uint8_t |
1a2eb460 | 2376 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 2377 | { |
30add22d | 2378 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2379 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2380 | |
9576c27f | 2381 | if (IS_VALLEYVIEW(dev)) |
e2fa6fba | 2382 | return DP_TRAIN_VOLTAGE_SWING_1200; |
bc7d38a4 | 2383 | else if (IS_GEN7(dev) && port == PORT_A) |
1a2eb460 | 2384 | return DP_TRAIN_VOLTAGE_SWING_800; |
bc7d38a4 | 2385 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
1a2eb460 KP |
2386 | return DP_TRAIN_VOLTAGE_SWING_1200; |
2387 | else | |
2388 | return DP_TRAIN_VOLTAGE_SWING_800; | |
2389 | } | |
2390 | ||
2391 | static uint8_t | |
2392 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
2393 | { | |
30add22d | 2394 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 2395 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 2396 | |
9576c27f | 2397 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
d6c0d722 PZ |
2398 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
2399 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2400 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
2401 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2402 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2403 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2404 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2405 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2406 | default: | |
2407 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2408 | } | |
e2fa6fba P |
2409 | } else if (IS_VALLEYVIEW(dev)) { |
2410 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2411 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2412 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
2413 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2414 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2415 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2416 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2417 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2418 | default: | |
2419 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2420 | } | |
bc7d38a4 | 2421 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
2422 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
2423 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2424 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2425 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2426 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2427 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2428 | default: | |
2429 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2430 | } | |
2431 | } else { | |
2432 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2433 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2434 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2435 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2436 | return DP_TRAIN_PRE_EMPHASIS_6; | |
2437 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2438 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
2439 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2440 | default: | |
2441 | return DP_TRAIN_PRE_EMPHASIS_0; | |
2442 | } | |
a4fc5ed6 KP |
2443 | } |
2444 | } | |
2445 | ||
e2fa6fba P |
2446 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
2447 | { | |
2448 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2449 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2450 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
5e69f97f CML |
2451 | struct intel_crtc *intel_crtc = |
2452 | to_intel_crtc(dport->base.base.crtc); | |
e2fa6fba P |
2453 | unsigned long demph_reg_value, preemph_reg_value, |
2454 | uniqtranscale_reg_value; | |
2455 | uint8_t train_set = intel_dp->train_set[0]; | |
e4607fcf | 2456 | enum dpio_channel port = vlv_dport_to_channel(dport); |
5e69f97f | 2457 | int pipe = intel_crtc->pipe; |
e2fa6fba P |
2458 | |
2459 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
2460 | case DP_TRAIN_PRE_EMPHASIS_0: | |
2461 | preemph_reg_value = 0x0004000; | |
2462 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2463 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2464 | demph_reg_value = 0x2B405555; | |
2465 | uniqtranscale_reg_value = 0x552AB83A; | |
2466 | break; | |
2467 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2468 | demph_reg_value = 0x2B404040; | |
2469 | uniqtranscale_reg_value = 0x5548B83A; | |
2470 | break; | |
2471 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2472 | demph_reg_value = 0x2B245555; | |
2473 | uniqtranscale_reg_value = 0x5560B83A; | |
2474 | break; | |
2475 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2476 | demph_reg_value = 0x2B405555; | |
2477 | uniqtranscale_reg_value = 0x5598DA3A; | |
2478 | break; | |
2479 | default: | |
2480 | return 0; | |
2481 | } | |
2482 | break; | |
2483 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2484 | preemph_reg_value = 0x0002000; | |
2485 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2486 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2487 | demph_reg_value = 0x2B404040; | |
2488 | uniqtranscale_reg_value = 0x5552B83A; | |
2489 | break; | |
2490 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2491 | demph_reg_value = 0x2B404848; | |
2492 | uniqtranscale_reg_value = 0x5580B83A; | |
2493 | break; | |
2494 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2495 | demph_reg_value = 0x2B404040; | |
2496 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2497 | break; | |
2498 | default: | |
2499 | return 0; | |
2500 | } | |
2501 | break; | |
2502 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2503 | preemph_reg_value = 0x0000000; | |
2504 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2505 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2506 | demph_reg_value = 0x2B305555; | |
2507 | uniqtranscale_reg_value = 0x5570B83A; | |
2508 | break; | |
2509 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2510 | demph_reg_value = 0x2B2B4040; | |
2511 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2512 | break; | |
2513 | default: | |
2514 | return 0; | |
2515 | } | |
2516 | break; | |
2517 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2518 | preemph_reg_value = 0x0006000; | |
2519 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2520 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2521 | demph_reg_value = 0x1B405555; | |
2522 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2523 | break; | |
2524 | default: | |
2525 | return 0; | |
2526 | } | |
2527 | break; | |
2528 | default: | |
2529 | return 0; | |
2530 | } | |
2531 | ||
0980a60f | 2532 | mutex_lock(&dev_priv->dpio_lock); |
ab3c759a CML |
2533 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000); |
2534 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value); | |
2535 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port), | |
e2fa6fba | 2536 | uniqtranscale_reg_value); |
ab3c759a CML |
2537 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW3(port), 0x0C782040); |
2538 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000); | |
2539 | vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value); | |
2540 | vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x80000000); | |
0980a60f | 2541 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
2542 | |
2543 | return 0; | |
2544 | } | |
2545 | ||
e4a1d846 CML |
2546 | static uint32_t intel_chv_signal_levels(struct intel_dp *intel_dp) |
2547 | { | |
2548 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
2549 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2550 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
2551 | struct intel_crtc *intel_crtc = to_intel_crtc(dport->base.base.crtc); | |
f72df8db | 2552 | u32 deemph_reg_value, margin_reg_value, val; |
e4a1d846 CML |
2553 | uint8_t train_set = intel_dp->train_set[0]; |
2554 | enum dpio_channel ch = vlv_dport_to_channel(dport); | |
f72df8db VS |
2555 | enum pipe pipe = intel_crtc->pipe; |
2556 | int i; | |
e4a1d846 CML |
2557 | |
2558 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
2559 | case DP_TRAIN_PRE_EMPHASIS_0: | |
2560 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2561 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2562 | deemph_reg_value = 128; | |
2563 | margin_reg_value = 52; | |
2564 | break; | |
2565 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2566 | deemph_reg_value = 128; | |
2567 | margin_reg_value = 77; | |
2568 | break; | |
2569 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2570 | deemph_reg_value = 128; | |
2571 | margin_reg_value = 102; | |
2572 | break; | |
2573 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2574 | deemph_reg_value = 128; | |
2575 | margin_reg_value = 154; | |
2576 | /* FIXME extra to set for 1200 */ | |
2577 | break; | |
2578 | default: | |
2579 | return 0; | |
2580 | } | |
2581 | break; | |
2582 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2583 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2584 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2585 | deemph_reg_value = 85; | |
2586 | margin_reg_value = 78; | |
2587 | break; | |
2588 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2589 | deemph_reg_value = 85; | |
2590 | margin_reg_value = 116; | |
2591 | break; | |
2592 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2593 | deemph_reg_value = 85; | |
2594 | margin_reg_value = 154; | |
2595 | break; | |
2596 | default: | |
2597 | return 0; | |
2598 | } | |
2599 | break; | |
2600 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2601 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2602 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2603 | deemph_reg_value = 64; | |
2604 | margin_reg_value = 104; | |
2605 | break; | |
2606 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2607 | deemph_reg_value = 64; | |
2608 | margin_reg_value = 154; | |
2609 | break; | |
2610 | default: | |
2611 | return 0; | |
2612 | } | |
2613 | break; | |
2614 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2615 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2616 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2617 | deemph_reg_value = 43; | |
2618 | margin_reg_value = 154; | |
2619 | break; | |
2620 | default: | |
2621 | return 0; | |
2622 | } | |
2623 | break; | |
2624 | default: | |
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | mutex_lock(&dev_priv->dpio_lock); | |
2629 | ||
2630 | /* Clear calc init */ | |
1966e59e VS |
2631 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
2632 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2633 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
2634 | ||
2635 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
2636 | val &= ~(DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3); | |
2637 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
2638 | |
2639 | /* Program swing deemph */ | |
f72df8db VS |
2640 | for (i = 0; i < 4; i++) { |
2641 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW4(ch, i)); | |
2642 | val &= ~DPIO_SWING_DEEMPH9P5_MASK; | |
2643 | val |= deemph_reg_value << DPIO_SWING_DEEMPH9P5_SHIFT; | |
2644 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW4(ch, i), val); | |
2645 | } | |
e4a1d846 CML |
2646 | |
2647 | /* Program swing margin */ | |
f72df8db VS |
2648 | for (i = 0; i < 4; i++) { |
2649 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
2650 | val &= ~DPIO_SWING_MARGIN_MASK; | |
2651 | val |= margin_reg_value << DPIO_SWING_MARGIN_SHIFT; | |
2652 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
2653 | } | |
e4a1d846 CML |
2654 | |
2655 | /* Disable unique transition scale */ | |
f72df8db VS |
2656 | for (i = 0; i < 4; i++) { |
2657 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
2658 | val &= ~DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
2659 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
2660 | } | |
e4a1d846 CML |
2661 | |
2662 | if (((train_set & DP_TRAIN_PRE_EMPHASIS_MASK) | |
2663 | == DP_TRAIN_PRE_EMPHASIS_0) && | |
2664 | ((train_set & DP_TRAIN_VOLTAGE_SWING_MASK) | |
2665 | == DP_TRAIN_VOLTAGE_SWING_1200)) { | |
2666 | ||
2667 | /* | |
2668 | * The document said it needs to set bit 27 for ch0 and bit 26 | |
2669 | * for ch1. Might be a typo in the doc. | |
2670 | * For now, for this unique transition scale selection, set bit | |
2671 | * 27 for ch0 and ch1. | |
2672 | */ | |
f72df8db VS |
2673 | for (i = 0; i < 4; i++) { |
2674 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW3(ch, i)); | |
2675 | val |= DPIO_TX_UNIQ_TRANS_SCALE_EN; | |
2676 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW3(ch, i), val); | |
2677 | } | |
e4a1d846 | 2678 | |
f72df8db VS |
2679 | for (i = 0; i < 4; i++) { |
2680 | val = vlv_dpio_read(dev_priv, pipe, CHV_TX_DW2(ch, i)); | |
2681 | val &= ~(0xff << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
2682 | val |= (0x9a << DPIO_UNIQ_TRANS_SCALE_SHIFT); | |
2683 | vlv_dpio_write(dev_priv, pipe, CHV_TX_DW2(ch, i), val); | |
2684 | } | |
e4a1d846 CML |
2685 | } |
2686 | ||
2687 | /* Start swing calculation */ | |
1966e59e VS |
2688 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch)); |
2689 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
2690 | vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW10(ch), val); | |
2691 | ||
2692 | val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW10(ch)); | |
2693 | val |= DPIO_PCS_SWING_CALC_TX0_TX2 | DPIO_PCS_SWING_CALC_TX1_TX3; | |
2694 | vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val); | |
e4a1d846 CML |
2695 | |
2696 | /* LRC Bypass */ | |
2697 | val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30); | |
2698 | val |= DPIO_LRC_BYPASS; | |
2699 | vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, val); | |
2700 | ||
2701 | mutex_unlock(&dev_priv->dpio_lock); | |
2702 | ||
2703 | return 0; | |
2704 | } | |
2705 | ||
a4fc5ed6 | 2706 | static void |
0301b3ac JN |
2707 | intel_get_adjust_train(struct intel_dp *intel_dp, |
2708 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) | |
a4fc5ed6 KP |
2709 | { |
2710 | uint8_t v = 0; | |
2711 | uint8_t p = 0; | |
2712 | int lane; | |
1a2eb460 KP |
2713 | uint8_t voltage_max; |
2714 | uint8_t preemph_max; | |
a4fc5ed6 | 2715 | |
33a34e4e | 2716 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
2717 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
2718 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
2719 | |
2720 | if (this_v > v) | |
2721 | v = this_v; | |
2722 | if (this_p > p) | |
2723 | p = this_p; | |
2724 | } | |
2725 | ||
1a2eb460 | 2726 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
2727 | if (v >= voltage_max) |
2728 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 2729 | |
1a2eb460 KP |
2730 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
2731 | if (p >= preemph_max) | |
2732 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
2733 | |
2734 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 2735 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
2736 | } |
2737 | ||
2738 | static uint32_t | |
f0a3424e | 2739 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2740 | { |
3cf2efb1 | 2741 | uint32_t signal_levels = 0; |
a4fc5ed6 | 2742 | |
3cf2efb1 | 2743 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
2744 | case DP_TRAIN_VOLTAGE_SWING_400: |
2745 | default: | |
2746 | signal_levels |= DP_VOLTAGE_0_4; | |
2747 | break; | |
2748 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2749 | signal_levels |= DP_VOLTAGE_0_6; | |
2750 | break; | |
2751 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2752 | signal_levels |= DP_VOLTAGE_0_8; | |
2753 | break; | |
2754 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2755 | signal_levels |= DP_VOLTAGE_1_2; | |
2756 | break; | |
2757 | } | |
3cf2efb1 | 2758 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
2759 | case DP_TRAIN_PRE_EMPHASIS_0: |
2760 | default: | |
2761 | signal_levels |= DP_PRE_EMPHASIS_0; | |
2762 | break; | |
2763 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2764 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
2765 | break; | |
2766 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2767 | signal_levels |= DP_PRE_EMPHASIS_6; | |
2768 | break; | |
2769 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2770 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
2771 | break; | |
2772 | } | |
2773 | return signal_levels; | |
2774 | } | |
2775 | ||
e3421a18 ZW |
2776 | /* Gen6's DP voltage swing and pre-emphasis control */ |
2777 | static uint32_t | |
2778 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
2779 | { | |
3c5a62b5 YL |
2780 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2781 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2782 | switch (signal_levels) { | |
e3421a18 | 2783 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2784 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2785 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
2786 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2787 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 2788 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
2789 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
2790 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 2791 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
2792 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
2793 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 2794 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2795 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
2796 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 2797 | default: |
3c5a62b5 YL |
2798 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
2799 | "0x%x\n", signal_levels); | |
2800 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
2801 | } |
2802 | } | |
2803 | ||
1a2eb460 KP |
2804 | /* Gen7's DP voltage swing and pre-emphasis control */ |
2805 | static uint32_t | |
2806 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
2807 | { | |
2808 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
2809 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2810 | switch (signal_levels) { | |
2811 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2812 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
2813 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2814 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
2815 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2816 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
2817 | ||
2818 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
2819 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
2820 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2821 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
2822 | ||
2823 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
2824 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
2825 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2826 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
2827 | ||
2828 | default: | |
2829 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2830 | "0x%x\n", signal_levels); | |
2831 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
2832 | } | |
2833 | } | |
2834 | ||
d6c0d722 PZ |
2835 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
2836 | static uint32_t | |
f0a3424e | 2837 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2838 | { |
d6c0d722 PZ |
2839 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2840 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2841 | switch (signal_levels) { | |
2842 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2843 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
2844 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2845 | return DDI_BUF_EMP_400MV_3_5DB_HSW; | |
2846 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2847 | return DDI_BUF_EMP_400MV_6DB_HSW; | |
2848 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: | |
2849 | return DDI_BUF_EMP_400MV_9_5DB_HSW; | |
a4fc5ed6 | 2850 | |
d6c0d722 PZ |
2851 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2852 | return DDI_BUF_EMP_600MV_0DB_HSW; | |
2853 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2854 | return DDI_BUF_EMP_600MV_3_5DB_HSW; | |
2855 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: | |
2856 | return DDI_BUF_EMP_600MV_6DB_HSW; | |
a4fc5ed6 | 2857 | |
d6c0d722 PZ |
2858 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
2859 | return DDI_BUF_EMP_800MV_0DB_HSW; | |
2860 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2861 | return DDI_BUF_EMP_800MV_3_5DB_HSW; | |
2862 | default: | |
2863 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2864 | "0x%x\n", signal_levels); | |
2865 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
a4fc5ed6 | 2866 | } |
a4fc5ed6 KP |
2867 | } |
2868 | ||
f0a3424e PZ |
2869 | /* Properly updates "DP" with the correct signal levels. */ |
2870 | static void | |
2871 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
2872 | { | |
2873 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 2874 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
2875 | struct drm_device *dev = intel_dig_port->base.base.dev; |
2876 | uint32_t signal_levels, mask; | |
2877 | uint8_t train_set = intel_dp->train_set[0]; | |
2878 | ||
9576c27f | 2879 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
f0a3424e PZ |
2880 | signal_levels = intel_hsw_signal_levels(train_set); |
2881 | mask = DDI_BUF_EMP_MASK; | |
e4a1d846 CML |
2882 | } else if (IS_CHERRYVIEW(dev)) { |
2883 | signal_levels = intel_chv_signal_levels(intel_dp); | |
2884 | mask = 0; | |
e2fa6fba P |
2885 | } else if (IS_VALLEYVIEW(dev)) { |
2886 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
2887 | mask = 0; | |
bc7d38a4 | 2888 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
2889 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
2890 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 2891 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
2892 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
2893 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
2894 | } else { | |
2895 | signal_levels = intel_gen4_signal_levels(train_set); | |
2896 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
2897 | } | |
2898 | ||
2899 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
2900 | ||
2901 | *DP = (*DP & ~mask) | signal_levels; | |
2902 | } | |
2903 | ||
a4fc5ed6 | 2904 | static bool |
ea5b213a | 2905 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
70aff66c | 2906 | uint32_t *DP, |
58e10eb9 | 2907 | uint8_t dp_train_pat) |
a4fc5ed6 | 2908 | { |
174edf1f PZ |
2909 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2910 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 2911 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 2912 | enum port port = intel_dig_port->port; |
2cdfe6c8 JN |
2913 | uint8_t buf[sizeof(intel_dp->train_set) + 1]; |
2914 | int ret, len; | |
a4fc5ed6 | 2915 | |
22b8bf17 | 2916 | if (HAS_DDI(dev)) { |
3ab9c637 | 2917 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
2918 | |
2919 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2920 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2921 | else | |
2922 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2923 | ||
2924 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2925 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2926 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
2927 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
2928 | ||
2929 | break; | |
2930 | case DP_TRAINING_PATTERN_1: | |
2931 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2932 | break; | |
2933 | case DP_TRAINING_PATTERN_2: | |
2934 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2935 | break; | |
2936 | case DP_TRAINING_PATTERN_3: | |
2937 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2938 | break; | |
2939 | } | |
174edf1f | 2940 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 2941 | |
bc7d38a4 | 2942 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
70aff66c | 2943 | *DP &= ~DP_LINK_TRAIN_MASK_CPT; |
47ea7542 PZ |
2944 | |
2945 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2946 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 2947 | *DP |= DP_LINK_TRAIN_OFF_CPT; |
47ea7542 PZ |
2948 | break; |
2949 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 2950 | *DP |= DP_LINK_TRAIN_PAT_1_CPT; |
47ea7542 PZ |
2951 | break; |
2952 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 2953 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
2954 | break; |
2955 | case DP_TRAINING_PATTERN_3: | |
2956 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
70aff66c | 2957 | *DP |= DP_LINK_TRAIN_PAT_2_CPT; |
47ea7542 PZ |
2958 | break; |
2959 | } | |
2960 | ||
2961 | } else { | |
aad3d14d VS |
2962 | if (IS_CHERRYVIEW(dev)) |
2963 | *DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
2964 | else | |
2965 | *DP &= ~DP_LINK_TRAIN_MASK; | |
47ea7542 PZ |
2966 | |
2967 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2968 | case DP_TRAINING_PATTERN_DISABLE: | |
70aff66c | 2969 | *DP |= DP_LINK_TRAIN_OFF; |
47ea7542 PZ |
2970 | break; |
2971 | case DP_TRAINING_PATTERN_1: | |
70aff66c | 2972 | *DP |= DP_LINK_TRAIN_PAT_1; |
47ea7542 PZ |
2973 | break; |
2974 | case DP_TRAINING_PATTERN_2: | |
70aff66c | 2975 | *DP |= DP_LINK_TRAIN_PAT_2; |
47ea7542 PZ |
2976 | break; |
2977 | case DP_TRAINING_PATTERN_3: | |
aad3d14d VS |
2978 | if (IS_CHERRYVIEW(dev)) { |
2979 | *DP |= DP_LINK_TRAIN_PAT_3_CHV; | |
2980 | } else { | |
2981 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2982 | *DP |= DP_LINK_TRAIN_PAT_2; | |
2983 | } | |
47ea7542 PZ |
2984 | break; |
2985 | } | |
2986 | } | |
2987 | ||
70aff66c | 2988 | I915_WRITE(intel_dp->output_reg, *DP); |
ea5b213a | 2989 | POSTING_READ(intel_dp->output_reg); |
a4fc5ed6 | 2990 | |
2cdfe6c8 JN |
2991 | buf[0] = dp_train_pat; |
2992 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) == | |
47ea7542 | 2993 | DP_TRAINING_PATTERN_DISABLE) { |
2cdfe6c8 JN |
2994 | /* don't write DP_TRAINING_LANEx_SET on disable */ |
2995 | len = 1; | |
2996 | } else { | |
2997 | /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ | |
2998 | memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); | |
2999 | len = intel_dp->lane_count + 1; | |
47ea7542 | 3000 | } |
a4fc5ed6 | 3001 | |
9d1a1031 JN |
3002 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET, |
3003 | buf, len); | |
2cdfe6c8 JN |
3004 | |
3005 | return ret == len; | |
a4fc5ed6 KP |
3006 | } |
3007 | ||
70aff66c JN |
3008 | static bool |
3009 | intel_dp_reset_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
3010 | uint8_t dp_train_pat) | |
3011 | { | |
953d22e8 | 3012 | memset(intel_dp->train_set, 0, sizeof(intel_dp->train_set)); |
70aff66c JN |
3013 | intel_dp_set_signal_levels(intel_dp, DP); |
3014 | return intel_dp_set_link_train(intel_dp, DP, dp_train_pat); | |
3015 | } | |
3016 | ||
3017 | static bool | |
3018 | intel_dp_update_link_train(struct intel_dp *intel_dp, uint32_t *DP, | |
0301b3ac | 3019 | const uint8_t link_status[DP_LINK_STATUS_SIZE]) |
70aff66c JN |
3020 | { |
3021 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3022 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3023 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3024 | int ret; | |
3025 | ||
3026 | intel_get_adjust_train(intel_dp, link_status); | |
3027 | intel_dp_set_signal_levels(intel_dp, DP); | |
3028 | ||
3029 | I915_WRITE(intel_dp->output_reg, *DP); | |
3030 | POSTING_READ(intel_dp->output_reg); | |
3031 | ||
9d1a1031 JN |
3032 | ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET, |
3033 | intel_dp->train_set, intel_dp->lane_count); | |
70aff66c JN |
3034 | |
3035 | return ret == intel_dp->lane_count; | |
3036 | } | |
3037 | ||
3ab9c637 ID |
3038 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
3039 | { | |
3040 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3041 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3042 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3043 | enum port port = intel_dig_port->port; | |
3044 | uint32_t val; | |
3045 | ||
3046 | if (!HAS_DDI(dev)) | |
3047 | return; | |
3048 | ||
3049 | val = I915_READ(DP_TP_CTL(port)); | |
3050 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
3051 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
3052 | I915_WRITE(DP_TP_CTL(port), val); | |
3053 | ||
3054 | /* | |
3055 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
3056 | * we need to set idle transmission mode is to work around a HW issue | |
3057 | * where we enable the pipe while not in idle link-training mode. | |
3058 | * In this case there is requirement to wait for a minimum number of | |
3059 | * idle patterns to be sent. | |
3060 | */ | |
3061 | if (port == PORT_A) | |
3062 | return; | |
3063 | ||
3064 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
3065 | 1)) | |
3066 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
3067 | } | |
3068 | ||
33a34e4e | 3069 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 3070 | void |
33a34e4e | 3071 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 3072 | { |
da63a9f2 | 3073 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 3074 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
3075 | int i; |
3076 | uint8_t voltage; | |
cdb0e95b | 3077 | int voltage_tries, loop_tries; |
ea5b213a | 3078 | uint32_t DP = intel_dp->DP; |
6aba5b6c | 3079 | uint8_t link_config[2]; |
a4fc5ed6 | 3080 | |
affa9354 | 3081 | if (HAS_DDI(dev)) |
c19b0669 PZ |
3082 | intel_ddi_prepare_link_retrain(encoder); |
3083 | ||
3cf2efb1 | 3084 | /* Write the link configuration data */ |
6aba5b6c JN |
3085 | link_config[0] = intel_dp->link_bw; |
3086 | link_config[1] = intel_dp->lane_count; | |
3087 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
3088 | link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
9d1a1031 | 3089 | drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2); |
6aba5b6c JN |
3090 | |
3091 | link_config[0] = 0; | |
3092 | link_config[1] = DP_SET_ANSI_8B10B; | |
9d1a1031 | 3093 | drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); |
a4fc5ed6 KP |
3094 | |
3095 | DP |= DP_PORT_EN; | |
1a2eb460 | 3096 | |
70aff66c JN |
3097 | /* clock recovery */ |
3098 | if (!intel_dp_reset_link_train(intel_dp, &DP, | |
3099 | DP_TRAINING_PATTERN_1 | | |
3100 | DP_LINK_SCRAMBLING_DISABLE)) { | |
3101 | DRM_ERROR("failed to enable link training\n"); | |
3102 | return; | |
3103 | } | |
3104 | ||
a4fc5ed6 | 3105 | voltage = 0xff; |
cdb0e95b KP |
3106 | voltage_tries = 0; |
3107 | loop_tries = 0; | |
a4fc5ed6 | 3108 | for (;;) { |
70aff66c | 3109 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
a4fc5ed6 | 3110 | |
a7c9655f | 3111 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
3112 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3113 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3114 | break; |
93f62dad | 3115 | } |
a4fc5ed6 | 3116 | |
01916270 | 3117 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 3118 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
3119 | break; |
3120 | } | |
3121 | ||
3122 | /* Check to see if we've tried the max voltage */ | |
3123 | for (i = 0; i < intel_dp->lane_count; i++) | |
3124 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 3125 | break; |
3b4f819d | 3126 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
3127 | ++loop_tries; |
3128 | if (loop_tries == 5) { | |
3def84b3 | 3129 | DRM_ERROR("too many full retries, give up\n"); |
cdb0e95b KP |
3130 | break; |
3131 | } | |
70aff66c JN |
3132 | intel_dp_reset_link_train(intel_dp, &DP, |
3133 | DP_TRAINING_PATTERN_1 | | |
3134 | DP_LINK_SCRAMBLING_DISABLE); | |
cdb0e95b KP |
3135 | voltage_tries = 0; |
3136 | continue; | |
3137 | } | |
a4fc5ed6 | 3138 | |
3cf2efb1 | 3139 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 3140 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 3141 | ++voltage_tries; |
b06fbda3 | 3142 | if (voltage_tries == 5) { |
3def84b3 | 3143 | DRM_ERROR("too many voltage retries, give up\n"); |
b06fbda3 DV |
3144 | break; |
3145 | } | |
3146 | } else | |
3147 | voltage_tries = 0; | |
3148 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 3149 | |
70aff66c JN |
3150 | /* Update training set as requested by target */ |
3151 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3152 | DRM_ERROR("failed to update link training\n"); | |
3153 | break; | |
3154 | } | |
a4fc5ed6 KP |
3155 | } |
3156 | ||
33a34e4e JB |
3157 | intel_dp->DP = DP; |
3158 | } | |
3159 | ||
c19b0669 | 3160 | void |
33a34e4e JB |
3161 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
3162 | { | |
33a34e4e | 3163 | bool channel_eq = false; |
37f80975 | 3164 | int tries, cr_tries; |
33a34e4e | 3165 | uint32_t DP = intel_dp->DP; |
06ea66b6 TP |
3166 | uint32_t training_pattern = DP_TRAINING_PATTERN_2; |
3167 | ||
3168 | /* Training Pattern 3 for HBR2 ot 1.2 devices that support it*/ | |
3169 | if (intel_dp->link_bw == DP_LINK_BW_5_4 || intel_dp->use_tps3) | |
3170 | training_pattern = DP_TRAINING_PATTERN_3; | |
33a34e4e | 3171 | |
a4fc5ed6 | 3172 | /* channel equalization */ |
70aff66c | 3173 | if (!intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3174 | training_pattern | |
70aff66c JN |
3175 | DP_LINK_SCRAMBLING_DISABLE)) { |
3176 | DRM_ERROR("failed to start channel equalization\n"); | |
3177 | return; | |
3178 | } | |
3179 | ||
a4fc5ed6 | 3180 | tries = 0; |
37f80975 | 3181 | cr_tries = 0; |
a4fc5ed6 KP |
3182 | channel_eq = false; |
3183 | for (;;) { | |
70aff66c | 3184 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 3185 | |
37f80975 JB |
3186 | if (cr_tries > 5) { |
3187 | DRM_ERROR("failed to train DP, aborting\n"); | |
37f80975 JB |
3188 | break; |
3189 | } | |
3190 | ||
a7c9655f | 3191 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
70aff66c JN |
3192 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
3193 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 3194 | break; |
70aff66c | 3195 | } |
a4fc5ed6 | 3196 | |
37f80975 | 3197 | /* Make sure clock is still ok */ |
01916270 | 3198 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 | 3199 | intel_dp_start_link_train(intel_dp); |
70aff66c | 3200 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3201 | training_pattern | |
70aff66c | 3202 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3203 | cr_tries++; |
3204 | continue; | |
3205 | } | |
3206 | ||
1ffdff13 | 3207 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
3208 | channel_eq = true; |
3209 | break; | |
3210 | } | |
a4fc5ed6 | 3211 | |
37f80975 JB |
3212 | /* Try 5 times, then try clock recovery if that fails */ |
3213 | if (tries > 5) { | |
3214 | intel_dp_link_down(intel_dp); | |
3215 | intel_dp_start_link_train(intel_dp); | |
70aff66c | 3216 | intel_dp_set_link_train(intel_dp, &DP, |
06ea66b6 | 3217 | training_pattern | |
70aff66c | 3218 | DP_LINK_SCRAMBLING_DISABLE); |
37f80975 JB |
3219 | tries = 0; |
3220 | cr_tries++; | |
3221 | continue; | |
3222 | } | |
a4fc5ed6 | 3223 | |
70aff66c JN |
3224 | /* Update training set as requested by target */ |
3225 | if (!intel_dp_update_link_train(intel_dp, &DP, link_status)) { | |
3226 | DRM_ERROR("failed to update link training\n"); | |
3227 | break; | |
3228 | } | |
3cf2efb1 | 3229 | ++tries; |
869184a6 | 3230 | } |
3cf2efb1 | 3231 | |
3ab9c637 ID |
3232 | intel_dp_set_idle_link_train(intel_dp); |
3233 | ||
3234 | intel_dp->DP = DP; | |
3235 | ||
d6c0d722 | 3236 | if (channel_eq) |
07f42258 | 3237 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 3238 | |
3ab9c637 ID |
3239 | } |
3240 | ||
3241 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
3242 | { | |
70aff66c | 3243 | intel_dp_set_link_train(intel_dp, &intel_dp->DP, |
3ab9c637 | 3244 | DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
3245 | } |
3246 | ||
3247 | static void | |
ea5b213a | 3248 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 3249 | { |
da63a9f2 | 3250 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 3251 | enum port port = intel_dig_port->port; |
da63a9f2 | 3252 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 3253 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
3254 | struct intel_crtc *intel_crtc = |
3255 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 3256 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 3257 | |
bc76e320 | 3258 | if (WARN_ON(HAS_DDI(dev))) |
c19b0669 PZ |
3259 | return; |
3260 | ||
0c33d8d7 | 3261 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
3262 | return; |
3263 | ||
28c97730 | 3264 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 3265 | |
bc7d38a4 | 3266 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 3267 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 3268 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 | 3269 | } else { |
aad3d14d VS |
3270 | if (IS_CHERRYVIEW(dev)) |
3271 | DP &= ~DP_LINK_TRAIN_MASK_CHV; | |
3272 | else | |
3273 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 3274 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 3275 | } |
fe255d00 | 3276 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 3277 | |
493a7081 | 3278 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 3279 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 3280 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 3281 | |
5bddd17f EA |
3282 | /* Hardware workaround: leaving our transcoder select |
3283 | * set to transcoder B while it's off will prevent the | |
3284 | * corresponding HDMI output on transcoder A. | |
3285 | * | |
3286 | * Combine this with another hardware workaround: | |
3287 | * transcoder select bit can only be cleared while the | |
3288 | * port is enabled. | |
3289 | */ | |
3290 | DP &= ~DP_PIPEB_SELECT; | |
3291 | I915_WRITE(intel_dp->output_reg, DP); | |
3292 | ||
3293 | /* Changes to enable or select take place the vblank | |
3294 | * after being written. | |
3295 | */ | |
ff50afe9 DV |
3296 | if (WARN_ON(crtc == NULL)) { |
3297 | /* We should never try to disable a port without a crtc | |
3298 | * attached. For paranoia keep the code around for a | |
3299 | * bit. */ | |
31acbcc4 CW |
3300 | POSTING_READ(intel_dp->output_reg); |
3301 | msleep(50); | |
3302 | } else | |
ab527efc | 3303 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
3304 | } |
3305 | ||
832afda6 | 3306 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
3307 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
3308 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 3309 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
3310 | } |
3311 | ||
26d61aad KP |
3312 | static bool |
3313 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 3314 | { |
a031d709 RV |
3315 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
3316 | struct drm_device *dev = dig_port->base.base.dev; | |
3317 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3318 | ||
577c7a50 DL |
3319 | char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3]; |
3320 | ||
9d1a1031 JN |
3321 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd, |
3322 | sizeof(intel_dp->dpcd)) < 0) | |
edb39244 | 3323 | return false; /* aux transfer failed */ |
92fd8fd1 | 3324 | |
577c7a50 DL |
3325 | hex_dump_to_buffer(intel_dp->dpcd, sizeof(intel_dp->dpcd), |
3326 | 32, 1, dpcd_hex_dump, sizeof(dpcd_hex_dump), false); | |
3327 | DRM_DEBUG_KMS("DPCD: %s\n", dpcd_hex_dump); | |
3328 | ||
edb39244 AJ |
3329 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
3330 | return false; /* DPCD not present */ | |
3331 | ||
2293bb5c SK |
3332 | /* Check if the panel supports PSR */ |
3333 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
50003939 | 3334 | if (is_edp(intel_dp)) { |
9d1a1031 JN |
3335 | intel_dp_dpcd_read_wake(&intel_dp->aux, DP_PSR_SUPPORT, |
3336 | intel_dp->psr_dpcd, | |
3337 | sizeof(intel_dp->psr_dpcd)); | |
a031d709 RV |
3338 | if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) { |
3339 | dev_priv->psr.sink_support = true; | |
50003939 | 3340 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); |
a031d709 | 3341 | } |
50003939 JN |
3342 | } |
3343 | ||
06ea66b6 TP |
3344 | /* Training Pattern 3 support */ |
3345 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x12 && | |
3346 | intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_TPS3_SUPPORTED) { | |
3347 | intel_dp->use_tps3 = true; | |
3348 | DRM_DEBUG_KMS("Displayport TPS3 supported"); | |
3349 | } else | |
3350 | intel_dp->use_tps3 = false; | |
3351 | ||
edb39244 AJ |
3352 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
3353 | DP_DWN_STRM_PORT_PRESENT)) | |
3354 | return true; /* native DP sink */ | |
3355 | ||
3356 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
3357 | return true; /* no per-port downstream info */ | |
3358 | ||
9d1a1031 JN |
3359 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_DOWNSTREAM_PORT_0, |
3360 | intel_dp->downstream_ports, | |
3361 | DP_MAX_DOWNSTREAM_PORTS) < 0) | |
edb39244 AJ |
3362 | return false; /* downstream port status fetch failed */ |
3363 | ||
3364 | return true; | |
92fd8fd1 KP |
3365 | } |
3366 | ||
0d198328 AJ |
3367 | static void |
3368 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
3369 | { | |
3370 | u8 buf[3]; | |
3371 | ||
3372 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
3373 | return; | |
3374 | ||
24f3e092 | 3375 | intel_edp_panel_vdd_on(intel_dp); |
351cfc34 | 3376 | |
9d1a1031 | 3377 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3) |
0d198328 AJ |
3378 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", |
3379 | buf[0], buf[1], buf[2]); | |
3380 | ||
9d1a1031 | 3381 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3) |
0d198328 AJ |
3382 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", |
3383 | buf[0], buf[1], buf[2]); | |
351cfc34 | 3384 | |
4be73780 | 3385 | edp_panel_vdd_off(intel_dp, false); |
0d198328 AJ |
3386 | } |
3387 | ||
0e32b39c DA |
3388 | static bool |
3389 | intel_dp_probe_mst(struct intel_dp *intel_dp) | |
3390 | { | |
3391 | u8 buf[1]; | |
3392 | ||
3393 | if (!intel_dp->can_mst) | |
3394 | return false; | |
3395 | ||
3396 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x12) | |
3397 | return false; | |
3398 | ||
3399 | _edp_panel_vdd_on(intel_dp); | |
3400 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_MSTM_CAP, buf, 1)) { | |
3401 | if (buf[0] & DP_MST_CAP) { | |
3402 | DRM_DEBUG_KMS("Sink is MST capable\n"); | |
3403 | intel_dp->is_mst = true; | |
3404 | } else { | |
3405 | DRM_DEBUG_KMS("Sink is not MST capable\n"); | |
3406 | intel_dp->is_mst = false; | |
3407 | } | |
3408 | } | |
3409 | edp_panel_vdd_off(intel_dp, false); | |
3410 | ||
3411 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3412 | return intel_dp->is_mst; | |
3413 | } | |
3414 | ||
d2e216d0 RV |
3415 | int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) |
3416 | { | |
3417 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3418 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3419 | struct intel_crtc *intel_crtc = | |
3420 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
3421 | u8 buf[1]; | |
3422 | ||
9d1a1031 | 3423 | if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0) |
d2e216d0 RV |
3424 | return -EAGAIN; |
3425 | ||
3426 | if (!(buf[0] & DP_TEST_CRC_SUPPORTED)) | |
3427 | return -ENOTTY; | |
3428 | ||
9d1a1031 JN |
3429 | if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, |
3430 | DP_TEST_SINK_START) < 0) | |
d2e216d0 RV |
3431 | return -EAGAIN; |
3432 | ||
3433 | /* Wait 2 vblanks to be sure we will have the correct CRC value */ | |
3434 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3435 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
3436 | ||
9d1a1031 | 3437 | if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) |
d2e216d0 RV |
3438 | return -EAGAIN; |
3439 | ||
9d1a1031 | 3440 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0); |
d2e216d0 RV |
3441 | return 0; |
3442 | } | |
3443 | ||
a60f0e38 JB |
3444 | static bool |
3445 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3446 | { | |
9d1a1031 JN |
3447 | return intel_dp_dpcd_read_wake(&intel_dp->aux, |
3448 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3449 | sink_irq_vector, 1) == 1; | |
a60f0e38 JB |
3450 | } |
3451 | ||
0e32b39c DA |
3452 | static bool |
3453 | intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
3454 | { | |
3455 | int ret; | |
3456 | ||
3457 | ret = intel_dp_dpcd_read_wake(&intel_dp->aux, | |
3458 | DP_SINK_COUNT_ESI, | |
3459 | sink_irq_vector, 14); | |
3460 | if (ret != 14) | |
3461 | return false; | |
3462 | ||
3463 | return true; | |
3464 | } | |
3465 | ||
a60f0e38 JB |
3466 | static void |
3467 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
3468 | { | |
3469 | /* NAK by default */ | |
9d1a1031 | 3470 | drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
3471 | } |
3472 | ||
0e32b39c DA |
3473 | static int |
3474 | intel_dp_check_mst_status(struct intel_dp *intel_dp) | |
3475 | { | |
3476 | bool bret; | |
3477 | ||
3478 | if (intel_dp->is_mst) { | |
3479 | u8 esi[16] = { 0 }; | |
3480 | int ret = 0; | |
3481 | int retry; | |
3482 | bool handled; | |
3483 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3484 | go_again: | |
3485 | if (bret == true) { | |
3486 | ||
3487 | /* check link status - esi[10] = 0x200c */ | |
3488 | if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { | |
3489 | DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); | |
3490 | intel_dp_start_link_train(intel_dp); | |
3491 | intel_dp_complete_link_train(intel_dp); | |
3492 | intel_dp_stop_link_train(intel_dp); | |
3493 | } | |
3494 | ||
3495 | DRM_DEBUG_KMS("got esi %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3496 | ret = drm_dp_mst_hpd_irq(&intel_dp->mst_mgr, esi, &handled); | |
3497 | ||
3498 | if (handled) { | |
3499 | for (retry = 0; retry < 3; retry++) { | |
3500 | int wret; | |
3501 | wret = drm_dp_dpcd_write(&intel_dp->aux, | |
3502 | DP_SINK_COUNT_ESI+1, | |
3503 | &esi[1], 3); | |
3504 | if (wret == 3) { | |
3505 | break; | |
3506 | } | |
3507 | } | |
3508 | ||
3509 | bret = intel_dp_get_sink_irq_esi(intel_dp, esi); | |
3510 | if (bret == true) { | |
3511 | DRM_DEBUG_KMS("got esi2 %02x %02x %02x\n", esi[0], esi[1], esi[2]); | |
3512 | goto go_again; | |
3513 | } | |
3514 | } else | |
3515 | ret = 0; | |
3516 | ||
3517 | return ret; | |
3518 | } else { | |
3519 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3520 | DRM_DEBUG_KMS("failed to get ESI - device may have failed\n"); | |
3521 | intel_dp->is_mst = false; | |
3522 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
3523 | /* send a hotplug event */ | |
3524 | drm_kms_helper_hotplug_event(intel_dig_port->base.base.dev); | |
3525 | } | |
3526 | } | |
3527 | return -EINVAL; | |
3528 | } | |
3529 | ||
a4fc5ed6 KP |
3530 | /* |
3531 | * According to DP spec | |
3532 | * 5.1.2: | |
3533 | * 1. Read DPCD | |
3534 | * 2. Configure link according to Receiver Capabilities | |
3535 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
3536 | * 4. Check link status on receipt of hot-plug interrupt | |
3537 | */ | |
00c09d70 | 3538 | void |
ea5b213a | 3539 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 3540 | { |
da63a9f2 | 3541 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 3542 | u8 sink_irq_vector; |
93f62dad | 3543 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 3544 | |
6e9f798d | 3545 | /* FIXME: This access isn't protected by any locks. */ |
da63a9f2 | 3546 | if (!intel_encoder->connectors_active) |
d2b996ac | 3547 | return; |
59cd09e1 | 3548 | |
da63a9f2 | 3549 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
3550 | return; |
3551 | ||
92fd8fd1 | 3552 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 3553 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
a4fc5ed6 KP |
3554 | return; |
3555 | } | |
3556 | ||
92fd8fd1 | 3557 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 3558 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
3559 | return; |
3560 | } | |
3561 | ||
a60f0e38 JB |
3562 | /* Try to read the source of the interrupt */ |
3563 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
3564 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
3565 | /* Clear interrupt source */ | |
9d1a1031 JN |
3566 | drm_dp_dpcd_writeb(&intel_dp->aux, |
3567 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
3568 | sink_irq_vector); | |
a60f0e38 JB |
3569 | |
3570 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
3571 | intel_dp_handle_test_request(intel_dp); | |
3572 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
3573 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
3574 | } | |
3575 | ||
1ffdff13 | 3576 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 3577 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
8e329a03 | 3578 | intel_encoder->base.name); |
33a34e4e JB |
3579 | intel_dp_start_link_train(intel_dp); |
3580 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 3581 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 3582 | } |
a4fc5ed6 | 3583 | } |
a4fc5ed6 | 3584 | |
caf9ab24 | 3585 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 3586 | static enum drm_connector_status |
26d61aad | 3587 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 3588 | { |
caf9ab24 | 3589 | uint8_t *dpcd = intel_dp->dpcd; |
caf9ab24 AJ |
3590 | uint8_t type; |
3591 | ||
3592 | if (!intel_dp_get_dpcd(intel_dp)) | |
3593 | return connector_status_disconnected; | |
3594 | ||
3595 | /* if there's no downstream port, we're done */ | |
3596 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 3597 | return connector_status_connected; |
caf9ab24 AJ |
3598 | |
3599 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
c9ff160b JN |
3600 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
3601 | intel_dp->downstream_ports[0] & DP_DS_PORT_HPD) { | |
23235177 | 3602 | uint8_t reg; |
9d1a1031 JN |
3603 | |
3604 | if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT, | |
3605 | ®, 1) < 0) | |
caf9ab24 | 3606 | return connector_status_unknown; |
9d1a1031 | 3607 | |
23235177 AJ |
3608 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
3609 | : connector_status_disconnected; | |
caf9ab24 AJ |
3610 | } |
3611 | ||
3612 | /* If no HPD, poke DDC gently */ | |
0b99836f | 3613 | if (drm_probe_ddc(&intel_dp->aux.ddc)) |
26d61aad | 3614 | return connector_status_connected; |
caf9ab24 AJ |
3615 | |
3616 | /* Well we tried, say unknown for unreliable port types */ | |
c9ff160b JN |
3617 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { |
3618 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
3619 | if (type == DP_DS_PORT_TYPE_VGA || | |
3620 | type == DP_DS_PORT_TYPE_NON_EDID) | |
3621 | return connector_status_unknown; | |
3622 | } else { | |
3623 | type = intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
3624 | DP_DWN_STRM_PORT_TYPE_MASK; | |
3625 | if (type == DP_DWN_STRM_PORT_TYPE_ANALOG || | |
3626 | type == DP_DWN_STRM_PORT_TYPE_OTHER) | |
3627 | return connector_status_unknown; | |
3628 | } | |
caf9ab24 AJ |
3629 | |
3630 | /* Anything else is out of spec, warn and ignore */ | |
3631 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 3632 | return connector_status_disconnected; |
71ba9000 AJ |
3633 | } |
3634 | ||
5eb08b69 | 3635 | static enum drm_connector_status |
a9756bb5 | 3636 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 3637 | { |
30add22d | 3638 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
3639 | struct drm_i915_private *dev_priv = dev->dev_private; |
3640 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5eb08b69 ZW |
3641 | enum drm_connector_status status; |
3642 | ||
fe16d949 CW |
3643 | /* Can't disconnect eDP, but you can close the lid... */ |
3644 | if (is_edp(intel_dp)) { | |
30add22d | 3645 | status = intel_panel_detect(dev); |
fe16d949 CW |
3646 | if (status == connector_status_unknown) |
3647 | status = connector_status_connected; | |
3648 | return status; | |
3649 | } | |
01cb9ea6 | 3650 | |
1b469639 DL |
3651 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
3652 | return connector_status_disconnected; | |
3653 | ||
26d61aad | 3654 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
3655 | } |
3656 | ||
a4fc5ed6 | 3657 | static enum drm_connector_status |
a9756bb5 | 3658 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 3659 | { |
30add22d | 3660 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 3661 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 3662 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 3663 | uint32_t bit; |
5eb08b69 | 3664 | |
35aad75f JB |
3665 | /* Can't disconnect eDP, but you can close the lid... */ |
3666 | if (is_edp(intel_dp)) { | |
3667 | enum drm_connector_status status; | |
3668 | ||
3669 | status = intel_panel_detect(dev); | |
3670 | if (status == connector_status_unknown) | |
3671 | status = connector_status_connected; | |
3672 | return status; | |
3673 | } | |
3674 | ||
232a6ee9 TP |
3675 | if (IS_VALLEYVIEW(dev)) { |
3676 | switch (intel_dig_port->port) { | |
3677 | case PORT_B: | |
3678 | bit = PORTB_HOTPLUG_LIVE_STATUS_VLV; | |
3679 | break; | |
3680 | case PORT_C: | |
3681 | bit = PORTC_HOTPLUG_LIVE_STATUS_VLV; | |
3682 | break; | |
3683 | case PORT_D: | |
3684 | bit = PORTD_HOTPLUG_LIVE_STATUS_VLV; | |
3685 | break; | |
3686 | default: | |
3687 | return connector_status_unknown; | |
3688 | } | |
3689 | } else { | |
3690 | switch (intel_dig_port->port) { | |
3691 | case PORT_B: | |
3692 | bit = PORTB_HOTPLUG_LIVE_STATUS_G4X; | |
3693 | break; | |
3694 | case PORT_C: | |
3695 | bit = PORTC_HOTPLUG_LIVE_STATUS_G4X; | |
3696 | break; | |
3697 | case PORT_D: | |
3698 | bit = PORTD_HOTPLUG_LIVE_STATUS_G4X; | |
3699 | break; | |
3700 | default: | |
3701 | return connector_status_unknown; | |
3702 | } | |
a4fc5ed6 KP |
3703 | } |
3704 | ||
10f76a38 | 3705 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
3706 | return connector_status_disconnected; |
3707 | ||
26d61aad | 3708 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
3709 | } |
3710 | ||
8c241fef KP |
3711 | static struct edid * |
3712 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
3713 | { | |
9cd300e0 | 3714 | struct intel_connector *intel_connector = to_intel_connector(connector); |
d6f24d0f | 3715 | |
9cd300e0 JN |
3716 | /* use cached edid if we have one */ |
3717 | if (intel_connector->edid) { | |
9cd300e0 JN |
3718 | /* invalid edid */ |
3719 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
3720 | return NULL; |
3721 | ||
55e9edeb | 3722 | return drm_edid_duplicate(intel_connector->edid); |
d6f24d0f | 3723 | } |
8c241fef | 3724 | |
9cd300e0 | 3725 | return drm_get_edid(connector, adapter); |
8c241fef KP |
3726 | } |
3727 | ||
3728 | static int | |
3729 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
3730 | { | |
9cd300e0 | 3731 | struct intel_connector *intel_connector = to_intel_connector(connector); |
8c241fef | 3732 | |
9cd300e0 JN |
3733 | /* use cached edid if we have one */ |
3734 | if (intel_connector->edid) { | |
3735 | /* invalid edid */ | |
3736 | if (IS_ERR(intel_connector->edid)) | |
3737 | return 0; | |
3738 | ||
3739 | return intel_connector_update_modes(connector, | |
3740 | intel_connector->edid); | |
d6f24d0f JB |
3741 | } |
3742 | ||
9cd300e0 | 3743 | return intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
3744 | } |
3745 | ||
a9756bb5 ZW |
3746 | static enum drm_connector_status |
3747 | intel_dp_detect(struct drm_connector *connector, bool force) | |
3748 | { | |
3749 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
3750 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3751 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 3752 | struct drm_device *dev = connector->dev; |
c8c8fb33 | 3753 | struct drm_i915_private *dev_priv = dev->dev_private; |
a9756bb5 | 3754 | enum drm_connector_status status; |
671dedd2 | 3755 | enum intel_display_power_domain power_domain; |
a9756bb5 | 3756 | struct edid *edid = NULL; |
0e32b39c | 3757 | bool ret; |
a9756bb5 | 3758 | |
671dedd2 ID |
3759 | power_domain = intel_display_port_power_domain(intel_encoder); |
3760 | intel_display_power_get(dev_priv, power_domain); | |
3761 | ||
164c8598 | 3762 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
c23cc417 | 3763 | connector->base.id, connector->name); |
164c8598 | 3764 | |
0e32b39c DA |
3765 | if (intel_dp->is_mst) { |
3766 | /* MST devices are disconnected from a monitor POV */ | |
3767 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
3768 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
3769 | status = connector_status_disconnected; | |
3770 | goto out; | |
3771 | } | |
3772 | ||
a9756bb5 ZW |
3773 | intel_dp->has_audio = false; |
3774 | ||
3775 | if (HAS_PCH_SPLIT(dev)) | |
3776 | status = ironlake_dp_detect(intel_dp); | |
3777 | else | |
3778 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 3779 | |
a9756bb5 | 3780 | if (status != connector_status_connected) |
c8c8fb33 | 3781 | goto out; |
a9756bb5 | 3782 | |
0d198328 AJ |
3783 | intel_dp_probe_oui(intel_dp); |
3784 | ||
0e32b39c DA |
3785 | ret = intel_dp_probe_mst(intel_dp); |
3786 | if (ret) { | |
3787 | /* if we are in MST mode then this connector | |
3788 | won't appear connected or have anything with EDID on it */ | |
3789 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
3790 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
3791 | status = connector_status_disconnected; | |
3792 | goto out; | |
3793 | } | |
3794 | ||
c3e5f67b DV |
3795 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
3796 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 3797 | } else { |
0b99836f | 3798 | edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc); |
f684960e CW |
3799 | if (edid) { |
3800 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
3801 | kfree(edid); |
3802 | } | |
a9756bb5 ZW |
3803 | } |
3804 | ||
d63885da PZ |
3805 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
3806 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
c8c8fb33 PZ |
3807 | status = connector_status_connected; |
3808 | ||
3809 | out: | |
671dedd2 | 3810 | intel_display_power_put(dev_priv, power_domain); |
c8c8fb33 | 3811 | return status; |
a4fc5ed6 KP |
3812 | } |
3813 | ||
3814 | static int intel_dp_get_modes(struct drm_connector *connector) | |
3815 | { | |
df0e9248 | 3816 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
671dedd2 ID |
3817 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3818 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
dd06f90e | 3819 | struct intel_connector *intel_connector = to_intel_connector(connector); |
fa90ecef | 3820 | struct drm_device *dev = connector->dev; |
671dedd2 ID |
3821 | struct drm_i915_private *dev_priv = dev->dev_private; |
3822 | enum intel_display_power_domain power_domain; | |
32f9d658 | 3823 | int ret; |
a4fc5ed6 KP |
3824 | |
3825 | /* We should parse the EDID data and find out if it has an audio sink | |
3826 | */ | |
3827 | ||
671dedd2 ID |
3828 | power_domain = intel_display_port_power_domain(intel_encoder); |
3829 | intel_display_power_get(dev_priv, power_domain); | |
3830 | ||
0b99836f | 3831 | ret = intel_dp_get_edid_modes(connector, &intel_dp->aux.ddc); |
671dedd2 | 3832 | intel_display_power_put(dev_priv, power_domain); |
f8779fda | 3833 | if (ret) |
32f9d658 ZW |
3834 | return ret; |
3835 | ||
f8779fda | 3836 | /* if eDP has no EDID, fall back to fixed mode */ |
dd06f90e | 3837 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
f8779fda | 3838 | struct drm_display_mode *mode; |
dd06f90e JN |
3839 | mode = drm_mode_duplicate(dev, |
3840 | intel_connector->panel.fixed_mode); | |
f8779fda | 3841 | if (mode) { |
32f9d658 ZW |
3842 | drm_mode_probed_add(connector, mode); |
3843 | return 1; | |
3844 | } | |
3845 | } | |
3846 | return 0; | |
a4fc5ed6 KP |
3847 | } |
3848 | ||
1aad7ac0 CW |
3849 | static bool |
3850 | intel_dp_detect_audio(struct drm_connector *connector) | |
3851 | { | |
3852 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
671dedd2 ID |
3853 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
3854 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
3855 | struct drm_device *dev = connector->dev; | |
3856 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3857 | enum intel_display_power_domain power_domain; | |
1aad7ac0 CW |
3858 | struct edid *edid; |
3859 | bool has_audio = false; | |
3860 | ||
671dedd2 ID |
3861 | power_domain = intel_display_port_power_domain(intel_encoder); |
3862 | intel_display_power_get(dev_priv, power_domain); | |
3863 | ||
0b99836f | 3864 | edid = intel_dp_get_edid(connector, &intel_dp->aux.ddc); |
1aad7ac0 CW |
3865 | if (edid) { |
3866 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
3867 | kfree(edid); |
3868 | } | |
3869 | ||
671dedd2 ID |
3870 | intel_display_power_put(dev_priv, power_domain); |
3871 | ||
1aad7ac0 CW |
3872 | return has_audio; |
3873 | } | |
3874 | ||
f684960e CW |
3875 | static int |
3876 | intel_dp_set_property(struct drm_connector *connector, | |
3877 | struct drm_property *property, | |
3878 | uint64_t val) | |
3879 | { | |
e953fd7b | 3880 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 3881 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
3882 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
3883 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
3884 | int ret; |
3885 | ||
662595df | 3886 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
3887 | if (ret) |
3888 | return ret; | |
3889 | ||
3f43c48d | 3890 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
3891 | int i = val; |
3892 | bool has_audio; | |
3893 | ||
3894 | if (i == intel_dp->force_audio) | |
f684960e CW |
3895 | return 0; |
3896 | ||
1aad7ac0 | 3897 | intel_dp->force_audio = i; |
f684960e | 3898 | |
c3e5f67b | 3899 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
3900 | has_audio = intel_dp_detect_audio(connector); |
3901 | else | |
c3e5f67b | 3902 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
3903 | |
3904 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
3905 | return 0; |
3906 | ||
1aad7ac0 | 3907 | intel_dp->has_audio = has_audio; |
f684960e CW |
3908 | goto done; |
3909 | } | |
3910 | ||
e953fd7b | 3911 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
3912 | bool old_auto = intel_dp->color_range_auto; |
3913 | uint32_t old_range = intel_dp->color_range; | |
3914 | ||
55bc60db VS |
3915 | switch (val) { |
3916 | case INTEL_BROADCAST_RGB_AUTO: | |
3917 | intel_dp->color_range_auto = true; | |
3918 | break; | |
3919 | case INTEL_BROADCAST_RGB_FULL: | |
3920 | intel_dp->color_range_auto = false; | |
3921 | intel_dp->color_range = 0; | |
3922 | break; | |
3923 | case INTEL_BROADCAST_RGB_LIMITED: | |
3924 | intel_dp->color_range_auto = false; | |
3925 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
3926 | break; | |
3927 | default: | |
3928 | return -EINVAL; | |
3929 | } | |
ae4edb80 DV |
3930 | |
3931 | if (old_auto == intel_dp->color_range_auto && | |
3932 | old_range == intel_dp->color_range) | |
3933 | return 0; | |
3934 | ||
e953fd7b CW |
3935 | goto done; |
3936 | } | |
3937 | ||
53b41837 YN |
3938 | if (is_edp(intel_dp) && |
3939 | property == connector->dev->mode_config.scaling_mode_property) { | |
3940 | if (val == DRM_MODE_SCALE_NONE) { | |
3941 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
3942 | return -EINVAL; | |
3943 | } | |
3944 | ||
3945 | if (intel_connector->panel.fitting_mode == val) { | |
3946 | /* the eDP scaling property is not changed */ | |
3947 | return 0; | |
3948 | } | |
3949 | intel_connector->panel.fitting_mode = val; | |
3950 | ||
3951 | goto done; | |
3952 | } | |
3953 | ||
f684960e CW |
3954 | return -EINVAL; |
3955 | ||
3956 | done: | |
c0c36b94 CW |
3957 | if (intel_encoder->base.crtc) |
3958 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
3959 | |
3960 | return 0; | |
3961 | } | |
3962 | ||
a4fc5ed6 | 3963 | static void |
73845adf | 3964 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 3965 | { |
1d508706 | 3966 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 3967 | |
9cd300e0 JN |
3968 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
3969 | kfree(intel_connector->edid); | |
3970 | ||
acd8db10 PZ |
3971 | /* Can't call is_edp() since the encoder may have been destroyed |
3972 | * already. */ | |
3973 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 3974 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 3975 | |
a4fc5ed6 | 3976 | drm_connector_cleanup(connector); |
55f78c43 | 3977 | kfree(connector); |
a4fc5ed6 KP |
3978 | } |
3979 | ||
00c09d70 | 3980 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 3981 | { |
da63a9f2 PZ |
3982 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
3983 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
bd173813 | 3984 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
24d05927 | 3985 | |
4f71d0cb | 3986 | drm_dp_aux_unregister(&intel_dp->aux); |
0e32b39c | 3987 | intel_dp_mst_encoder_cleanup(intel_dig_port); |
24d05927 | 3988 | drm_encoder_cleanup(encoder); |
bd943159 KP |
3989 | if (is_edp(intel_dp)) { |
3990 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
51fd371b | 3991 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 3992 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 3993 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
01527b31 CT |
3994 | if (intel_dp->edp_notifier.notifier_call) { |
3995 | unregister_reboot_notifier(&intel_dp->edp_notifier); | |
3996 | intel_dp->edp_notifier.notifier_call = NULL; | |
3997 | } | |
bd943159 | 3998 | } |
da63a9f2 | 3999 | kfree(intel_dig_port); |
24d05927 DV |
4000 | } |
4001 | ||
6d93c0c4 ID |
4002 | static void intel_dp_encoder_reset(struct drm_encoder *encoder) |
4003 | { | |
4004 | intel_edp_panel_vdd_sanitize(to_intel_encoder(encoder)); | |
4005 | } | |
4006 | ||
a4fc5ed6 | 4007 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 4008 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
4009 | .detect = intel_dp_detect, |
4010 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 4011 | .set_property = intel_dp_set_property, |
73845adf | 4012 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
4013 | }; |
4014 | ||
4015 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
4016 | .get_modes = intel_dp_get_modes, | |
4017 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 4018 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
4019 | }; |
4020 | ||
a4fc5ed6 | 4021 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
6d93c0c4 | 4022 | .reset = intel_dp_encoder_reset, |
24d05927 | 4023 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
4024 | }; |
4025 | ||
0e32b39c | 4026 | void |
21d40d37 | 4027 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 4028 | { |
0e32b39c | 4029 | return; |
c8110e52 | 4030 | } |
6207937d | 4031 | |
13cf5504 DA |
4032 | bool |
4033 | intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd) | |
4034 | { | |
4035 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
0e32b39c DA |
4036 | struct drm_device *dev = intel_dig_port->base.base.dev; |
4037 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4038 | int ret; | |
4039 | if (intel_dig_port->base.type != INTEL_OUTPUT_EDP) | |
4040 | intel_dig_port->base.type = INTEL_OUTPUT_DISPLAYPORT; | |
13cf5504 | 4041 | |
0e32b39c DA |
4042 | DRM_DEBUG_KMS("got hpd irq on port %d - %s\n", intel_dig_port->port, |
4043 | long_hpd ? "long" : "short"); | |
13cf5504 | 4044 | |
0e32b39c DA |
4045 | if (long_hpd) { |
4046 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) | |
4047 | goto mst_fail; | |
4048 | ||
4049 | if (!intel_dp_get_dpcd(intel_dp)) { | |
4050 | goto mst_fail; | |
4051 | } | |
4052 | ||
4053 | intel_dp_probe_oui(intel_dp); | |
4054 | ||
4055 | if (!intel_dp_probe_mst(intel_dp)) | |
4056 | goto mst_fail; | |
4057 | ||
4058 | } else { | |
4059 | if (intel_dp->is_mst) { | |
4060 | ret = intel_dp_check_mst_status(intel_dp); | |
4061 | if (ret == -EINVAL) | |
4062 | goto mst_fail; | |
4063 | } | |
4064 | ||
4065 | if (!intel_dp->is_mst) { | |
4066 | /* | |
4067 | * we'll check the link status via the normal hot plug path later - | |
4068 | * but for short hpds we should check it now | |
4069 | */ | |
4070 | intel_dp_check_link_status(intel_dp); | |
4071 | } | |
4072 | } | |
13cf5504 | 4073 | return false; |
0e32b39c DA |
4074 | mst_fail: |
4075 | /* if we were in MST mode, and device is not there get out of MST mode */ | |
4076 | if (intel_dp->is_mst) { | |
4077 | DRM_DEBUG_KMS("MST device may have disappeared %d vs %d\n", intel_dp->is_mst, intel_dp->mst_mgr.mst_state); | |
4078 | intel_dp->is_mst = false; | |
4079 | drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr, intel_dp->is_mst); | |
4080 | } | |
4081 | return true; | |
13cf5504 DA |
4082 | } |
4083 | ||
e3421a18 ZW |
4084 | /* Return which DP Port should be selected for Transcoder DP control */ |
4085 | int | |
0206e353 | 4086 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
4087 | { |
4088 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
4089 | struct intel_encoder *intel_encoder; |
4090 | struct intel_dp *intel_dp; | |
e3421a18 | 4091 | |
fa90ecef PZ |
4092 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
4093 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 4094 | |
fa90ecef PZ |
4095 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
4096 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 4097 | return intel_dp->output_reg; |
e3421a18 | 4098 | } |
ea5b213a | 4099 | |
e3421a18 ZW |
4100 | return -1; |
4101 | } | |
4102 | ||
36e83a18 | 4103 | /* check the VBT to see whether the eDP is on DP-D port */ |
5d8a7752 | 4104 | bool intel_dp_is_edp(struct drm_device *dev, enum port port) |
36e83a18 ZY |
4105 | { |
4106 | struct drm_i915_private *dev_priv = dev->dev_private; | |
768f69c9 | 4107 | union child_device_config *p_child; |
36e83a18 | 4108 | int i; |
5d8a7752 VS |
4109 | static const short port_mapping[] = { |
4110 | [PORT_B] = PORT_IDPB, | |
4111 | [PORT_C] = PORT_IDPC, | |
4112 | [PORT_D] = PORT_IDPD, | |
4113 | }; | |
36e83a18 | 4114 | |
3b32a35b VS |
4115 | if (port == PORT_A) |
4116 | return true; | |
4117 | ||
41aa3448 | 4118 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
4119 | return false; |
4120 | ||
41aa3448 RV |
4121 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
4122 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 | 4123 | |
5d8a7752 | 4124 | if (p_child->common.dvo_port == port_mapping[port] && |
f02586df VS |
4125 | (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) == |
4126 | (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS)) | |
36e83a18 ZY |
4127 | return true; |
4128 | } | |
4129 | return false; | |
4130 | } | |
4131 | ||
0e32b39c | 4132 | void |
f684960e CW |
4133 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) |
4134 | { | |
53b41837 YN |
4135 | struct intel_connector *intel_connector = to_intel_connector(connector); |
4136 | ||
3f43c48d | 4137 | intel_attach_force_audio_property(connector); |
e953fd7b | 4138 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 4139 | intel_dp->color_range_auto = true; |
53b41837 YN |
4140 | |
4141 | if (is_edp(intel_dp)) { | |
4142 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
4143 | drm_object_attach_property( |
4144 | &connector->base, | |
53b41837 | 4145 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
4146 | DRM_MODE_SCALE_ASPECT); |
4147 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 4148 | } |
f684960e CW |
4149 | } |
4150 | ||
dada1a9f ID |
4151 | static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) |
4152 | { | |
4153 | intel_dp->last_power_cycle = jiffies; | |
4154 | intel_dp->last_power_on = jiffies; | |
4155 | intel_dp->last_backlight_off = jiffies; | |
4156 | } | |
4157 | ||
67a54566 DV |
4158 | static void |
4159 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
4160 | struct intel_dp *intel_dp, |
4161 | struct edp_power_seq *out) | |
67a54566 DV |
4162 | { |
4163 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4164 | struct edp_power_seq cur, vbt, spec, final; | |
4165 | u32 pp_on, pp_off, pp_div, pp; | |
bf13e81b | 4166 | int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
453c5420 JB |
4167 | |
4168 | if (HAS_PCH_SPLIT(dev)) { | |
bf13e81b | 4169 | pp_ctrl_reg = PCH_PP_CONTROL; |
453c5420 JB |
4170 | pp_on_reg = PCH_PP_ON_DELAYS; |
4171 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4172 | pp_div_reg = PCH_PP_DIVISOR; | |
4173 | } else { | |
bf13e81b JN |
4174 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4175 | ||
4176 | pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe); | |
4177 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4178 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4179 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 | 4180 | } |
67a54566 DV |
4181 | |
4182 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
4183 | * the very first thing. */ | |
453c5420 | 4184 | pp = ironlake_get_pp_control(intel_dp); |
bf13e81b | 4185 | I915_WRITE(pp_ctrl_reg, pp); |
67a54566 | 4186 | |
453c5420 JB |
4187 | pp_on = I915_READ(pp_on_reg); |
4188 | pp_off = I915_READ(pp_off_reg); | |
4189 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
4190 | |
4191 | /* Pull timing values out of registers */ | |
4192 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
4193 | PANEL_POWER_UP_DELAY_SHIFT; | |
4194 | ||
4195 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
4196 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
4197 | ||
4198 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
4199 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
4200 | ||
4201 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
4202 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
4203 | ||
4204 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
4205 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
4206 | ||
4207 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4208 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
4209 | ||
41aa3448 | 4210 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
4211 | |
4212 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
4213 | * our hw here, which are all in 100usec. */ | |
4214 | spec.t1_t3 = 210 * 10; | |
4215 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
4216 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
4217 | spec.t10 = 500 * 10; | |
4218 | /* This one is special and actually in units of 100ms, but zero | |
4219 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
4220 | * table multiplies it with 1000 to make it in units of 100usec, | |
4221 | * too. */ | |
4222 | spec.t11_t12 = (510 + 100) * 10; | |
4223 | ||
4224 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
4225 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
4226 | ||
4227 | /* Use the max of the register settings and vbt. If both are | |
4228 | * unset, fall back to the spec limits. */ | |
4229 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
4230 | spec.field : \ | |
4231 | max(cur.field, vbt.field)) | |
4232 | assign_final(t1_t3); | |
4233 | assign_final(t8); | |
4234 | assign_final(t9); | |
4235 | assign_final(t10); | |
4236 | assign_final(t11_t12); | |
4237 | #undef assign_final | |
4238 | ||
4239 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
4240 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
4241 | intel_dp->backlight_on_delay = get_delay(t8); | |
4242 | intel_dp->backlight_off_delay = get_delay(t9); | |
4243 | intel_dp->panel_power_down_delay = get_delay(t10); | |
4244 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
4245 | #undef get_delay | |
4246 | ||
f30d26e4 JN |
4247 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
4248 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
4249 | intel_dp->panel_power_cycle_delay); | |
4250 | ||
4251 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
4252 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
4253 | ||
4254 | if (out) | |
4255 | *out = final; | |
4256 | } | |
4257 | ||
4258 | static void | |
4259 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
4260 | struct intel_dp *intel_dp, | |
4261 | struct edp_power_seq *seq) | |
4262 | { | |
4263 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
4264 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
4265 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
4266 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
4267 | ||
4268 | if (HAS_PCH_SPLIT(dev)) { | |
4269 | pp_on_reg = PCH_PP_ON_DELAYS; | |
4270 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
4271 | pp_div_reg = PCH_PP_DIVISOR; | |
4272 | } else { | |
bf13e81b JN |
4273 | enum pipe pipe = vlv_power_sequencer_pipe(intel_dp); |
4274 | ||
4275 | pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe); | |
4276 | pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe); | |
4277 | pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe); | |
453c5420 JB |
4278 | } |
4279 | ||
b2f19d1a PZ |
4280 | /* |
4281 | * And finally store the new values in the power sequencer. The | |
4282 | * backlight delays are set to 1 because we do manual waits on them. For | |
4283 | * T8, even BSpec recommends doing it. For T9, if we don't do this, | |
4284 | * we'll end up waiting for the backlight off delay twice: once when we | |
4285 | * do the manual sleep, and once when we disable the panel and wait for | |
4286 | * the PP_STATUS bit to become zero. | |
4287 | */ | |
f30d26e4 | 4288 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
b2f19d1a PZ |
4289 | (1 << PANEL_LIGHT_ON_DELAY_SHIFT); |
4290 | pp_off = (1 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
f30d26e4 | 4291 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); |
67a54566 DV |
4292 | /* Compute the divisor for the pp clock, simply match the Bspec |
4293 | * formula. */ | |
453c5420 | 4294 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 4295 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
4296 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
4297 | ||
4298 | /* Haswell doesn't have any port selection bits for the panel | |
4299 | * power sequencer any more. */ | |
bc7d38a4 | 4300 | if (IS_VALLEYVIEW(dev)) { |
bf13e81b JN |
4301 | if (dp_to_dig_port(intel_dp)->port == PORT_B) |
4302 | port_sel = PANEL_PORT_SELECT_DPB_VLV; | |
4303 | else | |
4304 | port_sel = PANEL_PORT_SELECT_DPC_VLV; | |
bc7d38a4 ID |
4305 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { |
4306 | if (dp_to_dig_port(intel_dp)->port == PORT_A) | |
a24c144c | 4307 | port_sel = PANEL_PORT_SELECT_DPA; |
67a54566 | 4308 | else |
a24c144c | 4309 | port_sel = PANEL_PORT_SELECT_DPD; |
67a54566 DV |
4310 | } |
4311 | ||
453c5420 JB |
4312 | pp_on |= port_sel; |
4313 | ||
4314 | I915_WRITE(pp_on_reg, pp_on); | |
4315 | I915_WRITE(pp_off_reg, pp_off); | |
4316 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 4317 | |
67a54566 | 4318 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
4319 | I915_READ(pp_on_reg), |
4320 | I915_READ(pp_off_reg), | |
4321 | I915_READ(pp_div_reg)); | |
f684960e CW |
4322 | } |
4323 | ||
439d7ac0 PB |
4324 | void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate) |
4325 | { | |
4326 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4327 | struct intel_encoder *encoder; | |
4328 | struct intel_dp *intel_dp = NULL; | |
4329 | struct intel_crtc_config *config = NULL; | |
4330 | struct intel_crtc *intel_crtc = NULL; | |
4331 | struct intel_connector *intel_connector = dev_priv->drrs.connector; | |
4332 | u32 reg, val; | |
4333 | enum edp_drrs_refresh_rate_type index = DRRS_HIGH_RR; | |
4334 | ||
4335 | if (refresh_rate <= 0) { | |
4336 | DRM_DEBUG_KMS("Refresh rate should be positive non-zero.\n"); | |
4337 | return; | |
4338 | } | |
4339 | ||
4340 | if (intel_connector == NULL) { | |
4341 | DRM_DEBUG_KMS("DRRS supported for eDP only.\n"); | |
4342 | return; | |
4343 | } | |
4344 | ||
1fcc9d1c DV |
4345 | /* |
4346 | * FIXME: This needs proper synchronization with psr state. But really | |
4347 | * hard to tell without seeing the user of this function of this code. | |
4348 | * Check locking and ordering once that lands. | |
4349 | */ | |
439d7ac0 PB |
4350 | if (INTEL_INFO(dev)->gen < 8 && intel_edp_is_psr_enabled(dev)) { |
4351 | DRM_DEBUG_KMS("DRRS is disabled as PSR is enabled\n"); | |
4352 | return; | |
4353 | } | |
4354 | ||
4355 | encoder = intel_attached_encoder(&intel_connector->base); | |
4356 | intel_dp = enc_to_intel_dp(&encoder->base); | |
4357 | intel_crtc = encoder->new_crtc; | |
4358 | ||
4359 | if (!intel_crtc) { | |
4360 | DRM_DEBUG_KMS("DRRS: intel_crtc not initialized\n"); | |
4361 | return; | |
4362 | } | |
4363 | ||
4364 | config = &intel_crtc->config; | |
4365 | ||
4366 | if (intel_dp->drrs_state.type < SEAMLESS_DRRS_SUPPORT) { | |
4367 | DRM_DEBUG_KMS("Only Seamless DRRS supported.\n"); | |
4368 | return; | |
4369 | } | |
4370 | ||
4371 | if (intel_connector->panel.downclock_mode->vrefresh == refresh_rate) | |
4372 | index = DRRS_LOW_RR; | |
4373 | ||
4374 | if (index == intel_dp->drrs_state.refresh_rate_type) { | |
4375 | DRM_DEBUG_KMS( | |
4376 | "DRRS requested for previously set RR...ignoring\n"); | |
4377 | return; | |
4378 | } | |
4379 | ||
4380 | if (!intel_crtc->active) { | |
4381 | DRM_DEBUG_KMS("eDP encoder disabled. CRTC not Active\n"); | |
4382 | return; | |
4383 | } | |
4384 | ||
4385 | if (INTEL_INFO(dev)->gen > 6 && INTEL_INFO(dev)->gen < 8) { | |
4386 | reg = PIPECONF(intel_crtc->config.cpu_transcoder); | |
4387 | val = I915_READ(reg); | |
4388 | if (index > DRRS_HIGH_RR) { | |
4389 | val |= PIPECONF_EDP_RR_MODE_SWITCH; | |
f769cd24 | 4390 | intel_dp_set_m_n(intel_crtc); |
439d7ac0 PB |
4391 | } else { |
4392 | val &= ~PIPECONF_EDP_RR_MODE_SWITCH; | |
4393 | } | |
4394 | I915_WRITE(reg, val); | |
4395 | } | |
4396 | ||
4397 | /* | |
4398 | * mutex taken to ensure that there is no race between differnt | |
4399 | * drrs calls trying to update refresh rate. This scenario may occur | |
4400 | * in future when idleness detection based DRRS in kernel and | |
4401 | * possible calls from user space to set differnt RR are made. | |
4402 | */ | |
4403 | ||
4404 | mutex_lock(&intel_dp->drrs_state.mutex); | |
4405 | ||
4406 | intel_dp->drrs_state.refresh_rate_type = index; | |
4407 | ||
4408 | mutex_unlock(&intel_dp->drrs_state.mutex); | |
4409 | ||
4410 | DRM_DEBUG_KMS("eDP Refresh Rate set to : %dHz\n", refresh_rate); | |
4411 | } | |
4412 | ||
4f9db5b5 PB |
4413 | static struct drm_display_mode * |
4414 | intel_dp_drrs_init(struct intel_digital_port *intel_dig_port, | |
4415 | struct intel_connector *intel_connector, | |
4416 | struct drm_display_mode *fixed_mode) | |
4417 | { | |
4418 | struct drm_connector *connector = &intel_connector->base; | |
4419 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4420 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
4421 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4422 | struct drm_display_mode *downclock_mode = NULL; | |
4423 | ||
4424 | if (INTEL_INFO(dev)->gen <= 6) { | |
4425 | DRM_DEBUG_KMS("DRRS supported for Gen7 and above\n"); | |
4426 | return NULL; | |
4427 | } | |
4428 | ||
4429 | if (dev_priv->vbt.drrs_type != SEAMLESS_DRRS_SUPPORT) { | |
4430 | DRM_INFO("VBT doesn't support DRRS\n"); | |
4431 | return NULL; | |
4432 | } | |
4433 | ||
4434 | downclock_mode = intel_find_panel_downclock | |
4435 | (dev, fixed_mode, connector); | |
4436 | ||
4437 | if (!downclock_mode) { | |
4438 | DRM_INFO("DRRS not supported\n"); | |
4439 | return NULL; | |
4440 | } | |
4441 | ||
439d7ac0 PB |
4442 | dev_priv->drrs.connector = intel_connector; |
4443 | ||
4444 | mutex_init(&intel_dp->drrs_state.mutex); | |
4445 | ||
4f9db5b5 PB |
4446 | intel_dp->drrs_state.type = dev_priv->vbt.drrs_type; |
4447 | ||
4448 | intel_dp->drrs_state.refresh_rate_type = DRRS_HIGH_RR; | |
4449 | DRM_INFO("seamless DRRS supported for eDP panel.\n"); | |
4450 | return downclock_mode; | |
4451 | } | |
4452 | ||
aba86890 ID |
4453 | void intel_edp_panel_vdd_sanitize(struct intel_encoder *intel_encoder) |
4454 | { | |
4455 | struct drm_device *dev = intel_encoder->base.dev; | |
4456 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4457 | struct intel_dp *intel_dp; | |
4458 | enum intel_display_power_domain power_domain; | |
4459 | ||
4460 | if (intel_encoder->type != INTEL_OUTPUT_EDP) | |
4461 | return; | |
4462 | ||
4463 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
4464 | if (!edp_have_panel_vdd(intel_dp)) | |
4465 | return; | |
4466 | /* | |
4467 | * The VDD bit needs a power domain reference, so if the bit is | |
4468 | * already enabled when we boot or resume, grab this reference and | |
4469 | * schedule a vdd off, so we don't hold on to the reference | |
4470 | * indefinitely. | |
4471 | */ | |
4472 | DRM_DEBUG_KMS("VDD left on by BIOS, adjusting state tracking\n"); | |
4473 | power_domain = intel_display_port_power_domain(intel_encoder); | |
4474 | intel_display_power_get(dev_priv, power_domain); | |
4475 | ||
4476 | edp_panel_vdd_schedule_off(intel_dp); | |
4477 | } | |
4478 | ||
ed92f0b2 | 4479 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
0095e6dc PZ |
4480 | struct intel_connector *intel_connector, |
4481 | struct edp_power_seq *power_seq) | |
ed92f0b2 PZ |
4482 | { |
4483 | struct drm_connector *connector = &intel_connector->base; | |
4484 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
63635217 PZ |
4485 | struct intel_encoder *intel_encoder = &intel_dig_port->base; |
4486 | struct drm_device *dev = intel_encoder->base.dev; | |
ed92f0b2 PZ |
4487 | struct drm_i915_private *dev_priv = dev->dev_private; |
4488 | struct drm_display_mode *fixed_mode = NULL; | |
4f9db5b5 | 4489 | struct drm_display_mode *downclock_mode = NULL; |
ed92f0b2 PZ |
4490 | bool has_dpcd; |
4491 | struct drm_display_mode *scan; | |
4492 | struct edid *edid; | |
4493 | ||
4f9db5b5 PB |
4494 | intel_dp->drrs_state.type = DRRS_NOT_SUPPORTED; |
4495 | ||
ed92f0b2 PZ |
4496 | if (!is_edp(intel_dp)) |
4497 | return true; | |
4498 | ||
aba86890 | 4499 | intel_edp_panel_vdd_sanitize(intel_encoder); |
63635217 | 4500 | |
ed92f0b2 | 4501 | /* Cache DPCD and EDID for edp. */ |
24f3e092 | 4502 | intel_edp_panel_vdd_on(intel_dp); |
ed92f0b2 | 4503 | has_dpcd = intel_dp_get_dpcd(intel_dp); |
4be73780 | 4504 | edp_panel_vdd_off(intel_dp, false); |
ed92f0b2 PZ |
4505 | |
4506 | if (has_dpcd) { | |
4507 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
4508 | dev_priv->no_aux_handshake = | |
4509 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
4510 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
4511 | } else { | |
4512 | /* if this fails, presume the device is a ghost */ | |
4513 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
4514 | return false; |
4515 | } | |
4516 | ||
4517 | /* We now know it's not a ghost, init power sequence regs. */ | |
0095e6dc | 4518 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, power_seq); |
ed92f0b2 | 4519 | |
060c8778 | 4520 | mutex_lock(&dev->mode_config.mutex); |
0b99836f | 4521 | edid = drm_get_edid(connector, &intel_dp->aux.ddc); |
ed92f0b2 PZ |
4522 | if (edid) { |
4523 | if (drm_add_edid_modes(connector, edid)) { | |
4524 | drm_mode_connector_update_edid_property(connector, | |
4525 | edid); | |
4526 | drm_edid_to_eld(connector, edid); | |
4527 | } else { | |
4528 | kfree(edid); | |
4529 | edid = ERR_PTR(-EINVAL); | |
4530 | } | |
4531 | } else { | |
4532 | edid = ERR_PTR(-ENOENT); | |
4533 | } | |
4534 | intel_connector->edid = edid; | |
4535 | ||
4536 | /* prefer fixed mode from EDID if available */ | |
4537 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
4538 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
4539 | fixed_mode = drm_mode_duplicate(dev, scan); | |
4f9db5b5 PB |
4540 | downclock_mode = intel_dp_drrs_init( |
4541 | intel_dig_port, | |
4542 | intel_connector, fixed_mode); | |
ed92f0b2 PZ |
4543 | break; |
4544 | } | |
4545 | } | |
4546 | ||
4547 | /* fallback to VBT if available for eDP */ | |
4548 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
4549 | fixed_mode = drm_mode_duplicate(dev, | |
4550 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
4551 | if (fixed_mode) | |
4552 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
4553 | } | |
060c8778 | 4554 | mutex_unlock(&dev->mode_config.mutex); |
ed92f0b2 | 4555 | |
01527b31 CT |
4556 | if (IS_VALLEYVIEW(dev)) { |
4557 | intel_dp->edp_notifier.notifier_call = edp_notify_handler; | |
4558 | register_reboot_notifier(&intel_dp->edp_notifier); | |
4559 | } | |
4560 | ||
4f9db5b5 | 4561 | intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode); |
ed92f0b2 PZ |
4562 | intel_panel_setup_backlight(connector); |
4563 | ||
4564 | return true; | |
4565 | } | |
4566 | ||
16c25533 | 4567 | bool |
f0fec3f2 PZ |
4568 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
4569 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 4570 | { |
f0fec3f2 PZ |
4571 | struct drm_connector *connector = &intel_connector->base; |
4572 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
4573 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
4574 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 4575 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 4576 | enum port port = intel_dig_port->port; |
0095e6dc | 4577 | struct edp_power_seq power_seq = { 0 }; |
0b99836f | 4578 | int type; |
a4fc5ed6 | 4579 | |
ec5b01dd DL |
4580 | /* intel_dp vfuncs */ |
4581 | if (IS_VALLEYVIEW(dev)) | |
4582 | intel_dp->get_aux_clock_divider = vlv_get_aux_clock_divider; | |
4583 | else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) | |
4584 | intel_dp->get_aux_clock_divider = hsw_get_aux_clock_divider; | |
4585 | else if (HAS_PCH_SPLIT(dev)) | |
4586 | intel_dp->get_aux_clock_divider = ilk_get_aux_clock_divider; | |
4587 | else | |
4588 | intel_dp->get_aux_clock_divider = i9xx_get_aux_clock_divider; | |
4589 | ||
153b1100 DL |
4590 | intel_dp->get_aux_send_ctl = i9xx_get_aux_send_ctl; |
4591 | ||
0767935e DV |
4592 | /* Preserve the current hw state. */ |
4593 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 4594 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 4595 | |
3b32a35b | 4596 | if (intel_dp_is_edp(dev, port)) |
b329530c | 4597 | type = DRM_MODE_CONNECTOR_eDP; |
3b32a35b VS |
4598 | else |
4599 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
b329530c | 4600 | |
f7d24902 ID |
4601 | /* |
4602 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
4603 | * for DP the encoder type can be set by the caller to | |
4604 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
4605 | */ | |
4606 | if (type == DRM_MODE_CONNECTOR_eDP) | |
4607 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
4608 | ||
e7281eab ID |
4609 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
4610 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
4611 | port_name(port)); | |
4612 | ||
b329530c | 4613 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
4614 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
4615 | ||
a4fc5ed6 KP |
4616 | connector->interlace_allowed = true; |
4617 | connector->doublescan_allowed = 0; | |
4618 | ||
f0fec3f2 | 4619 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
4be73780 | 4620 | edp_panel_vdd_work); |
a4fc5ed6 | 4621 | |
df0e9248 | 4622 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
34ea3d38 | 4623 | drm_connector_register(connector); |
a4fc5ed6 | 4624 | |
affa9354 | 4625 | if (HAS_DDI(dev)) |
bcbc889b PZ |
4626 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
4627 | else | |
4628 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
80f65de3 | 4629 | intel_connector->unregister = intel_dp_connector_unregister; |
bcbc889b | 4630 | |
0b99836f | 4631 | /* Set up the hotplug pin. */ |
ab9d7c30 PZ |
4632 | switch (port) { |
4633 | case PORT_A: | |
1d843f9d | 4634 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
4635 | break; |
4636 | case PORT_B: | |
1d843f9d | 4637 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
4638 | break; |
4639 | case PORT_C: | |
1d843f9d | 4640 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
4641 | break; |
4642 | case PORT_D: | |
1d843f9d | 4643 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
4644 | break; |
4645 | default: | |
ad1c0b19 | 4646 | BUG(); |
5eb08b69 ZW |
4647 | } |
4648 | ||
dada1a9f ID |
4649 | if (is_edp(intel_dp)) { |
4650 | intel_dp_init_panel_power_timestamps(intel_dp); | |
0095e6dc | 4651 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); |
dada1a9f | 4652 | } |
0095e6dc | 4653 | |
9d1a1031 | 4654 | intel_dp_aux_init(intel_dp, intel_connector); |
c1f05264 | 4655 | |
0e32b39c DA |
4656 | /* init MST on ports that can support it */ |
4657 | if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { | |
4658 | if (port == PORT_B || port == PORT_C || port == PORT_D) { | |
4659 | intel_dp_mst_encoder_init(intel_dig_port, intel_connector->base.base.id); | |
4660 | } | |
4661 | } | |
4662 | ||
0095e6dc | 4663 | if (!intel_edp_init_connector(intel_dp, intel_connector, &power_seq)) { |
4f71d0cb | 4664 | drm_dp_aux_unregister(&intel_dp->aux); |
15b1d171 PZ |
4665 | if (is_edp(intel_dp)) { |
4666 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
51fd371b | 4667 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
4be73780 | 4668 | edp_panel_vdd_off_sync(intel_dp); |
51fd371b | 4669 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
15b1d171 | 4670 | } |
34ea3d38 | 4671 | drm_connector_unregister(connector); |
b2f246a8 | 4672 | drm_connector_cleanup(connector); |
16c25533 | 4673 | return false; |
b2f246a8 | 4674 | } |
32f9d658 | 4675 | |
f684960e CW |
4676 | intel_dp_add_properties(intel_dp, connector); |
4677 | ||
a4fc5ed6 KP |
4678 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
4679 | * 0xd. Failure to do so will result in spurious interrupts being | |
4680 | * generated on the port when a cable is not attached. | |
4681 | */ | |
4682 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
4683 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
4684 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
4685 | } | |
16c25533 PZ |
4686 | |
4687 | return true; | |
a4fc5ed6 | 4688 | } |
f0fec3f2 PZ |
4689 | |
4690 | void | |
4691 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
4692 | { | |
13cf5504 | 4693 | struct drm_i915_private *dev_priv = dev->dev_private; |
f0fec3f2 PZ |
4694 | struct intel_digital_port *intel_dig_port; |
4695 | struct intel_encoder *intel_encoder; | |
4696 | struct drm_encoder *encoder; | |
4697 | struct intel_connector *intel_connector; | |
4698 | ||
b14c5679 | 4699 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
f0fec3f2 PZ |
4700 | if (!intel_dig_port) |
4701 | return; | |
4702 | ||
b14c5679 | 4703 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); |
f0fec3f2 PZ |
4704 | if (!intel_connector) { |
4705 | kfree(intel_dig_port); | |
4706 | return; | |
4707 | } | |
4708 | ||
4709 | intel_encoder = &intel_dig_port->base; | |
4710 | encoder = &intel_encoder->base; | |
4711 | ||
4712 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
4713 | DRM_MODE_ENCODER_TMDS); | |
4714 | ||
5bfe2ac0 | 4715 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 | 4716 | intel_encoder->disable = intel_disable_dp; |
00c09d70 | 4717 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
045ac3b5 | 4718 | intel_encoder->get_config = intel_dp_get_config; |
e4a1d846 | 4719 | if (IS_CHERRYVIEW(dev)) { |
9197c88b | 4720 | intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; |
e4a1d846 CML |
4721 | intel_encoder->pre_enable = chv_pre_enable_dp; |
4722 | intel_encoder->enable = vlv_enable_dp; | |
580d3811 | 4723 | intel_encoder->post_disable = chv_post_disable_dp; |
e4a1d846 | 4724 | } else if (IS_VALLEYVIEW(dev)) { |
ecff4f3b | 4725 | intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable; |
ab1f90f9 JN |
4726 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
4727 | intel_encoder->enable = vlv_enable_dp; | |
49277c31 | 4728 | intel_encoder->post_disable = vlv_post_disable_dp; |
ab1f90f9 | 4729 | } else { |
ecff4f3b JN |
4730 | intel_encoder->pre_enable = g4x_pre_enable_dp; |
4731 | intel_encoder->enable = g4x_enable_dp; | |
49277c31 | 4732 | intel_encoder->post_disable = g4x_post_disable_dp; |
ab1f90f9 | 4733 | } |
f0fec3f2 | 4734 | |
174edf1f | 4735 | intel_dig_port->port = port; |
f0fec3f2 PZ |
4736 | intel_dig_port->dp.output_reg = output_reg; |
4737 | ||
00c09d70 | 4738 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
882ec384 VS |
4739 | if (IS_CHERRYVIEW(dev)) { |
4740 | if (port == PORT_D) | |
4741 | intel_encoder->crtc_mask = 1 << 2; | |
4742 | else | |
4743 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); | |
4744 | } else { | |
4745 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); | |
4746 | } | |
bc079e8b | 4747 | intel_encoder->cloneable = 0; |
f0fec3f2 PZ |
4748 | intel_encoder->hot_plug = intel_dp_hot_plug; |
4749 | ||
13cf5504 DA |
4750 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
4751 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
4752 | ||
15b1d171 PZ |
4753 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
4754 | drm_encoder_cleanup(encoder); | |
4755 | kfree(intel_dig_port); | |
b2f246a8 | 4756 | kfree(intel_connector); |
15b1d171 | 4757 | } |
f0fec3f2 | 4758 | } |
0e32b39c DA |
4759 | |
4760 | void intel_dp_mst_suspend(struct drm_device *dev) | |
4761 | { | |
4762 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4763 | int i; | |
4764 | ||
4765 | /* disable MST */ | |
4766 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
4767 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
4768 | if (!intel_dig_port) | |
4769 | continue; | |
4770 | ||
4771 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
4772 | if (!intel_dig_port->dp.can_mst) | |
4773 | continue; | |
4774 | if (intel_dig_port->dp.is_mst) | |
4775 | drm_dp_mst_topology_mgr_suspend(&intel_dig_port->dp.mst_mgr); | |
4776 | } | |
4777 | } | |
4778 | } | |
4779 | ||
4780 | void intel_dp_mst_resume(struct drm_device *dev) | |
4781 | { | |
4782 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4783 | int i; | |
4784 | ||
4785 | for (i = 0; i < I915_MAX_PORTS; i++) { | |
4786 | struct intel_digital_port *intel_dig_port = dev_priv->hpd_irq_port[i]; | |
4787 | if (!intel_dig_port) | |
4788 | continue; | |
4789 | if (intel_dig_port->base.type == INTEL_OUTPUT_DISPLAYPORT) { | |
4790 | int ret; | |
4791 | ||
4792 | if (!intel_dig_port->dp.can_mst) | |
4793 | continue; | |
4794 | ||
4795 | ret = drm_dp_mst_topology_mgr_resume(&intel_dig_port->dp.mst_mgr); | |
4796 | if (ret != 0) { | |
4797 | intel_dp_check_mst_status(&intel_dig_port->dp); | |
4798 | } | |
4799 | } | |
4800 | } | |
4801 | } |