Commit | Line | Data |
---|---|---|
45244b87 ED |
1 | /* |
2 | * Copyright © 2012 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 | * Eugeni Dodonov <eugeni.dodonov@intel.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "i915_drv.h" | |
29 | #include "intel_drv.h" | |
30 | ||
10122051 JN |
31 | struct ddi_buf_trans { |
32 | u32 trans1; /* balance leg enable, de-emph level */ | |
33 | u32 trans2; /* vref sel, vswing */ | |
34 | }; | |
35 | ||
45244b87 ED |
36 | /* HDMI/DVI modes ignore everything but the last 2 items. So we share |
37 | * them for both DP and FDI transports, allowing those ports to | |
38 | * automatically adapt to HDMI connections as well | |
39 | */ | |
10122051 JN |
40 | static const struct ddi_buf_trans hsw_ddi_translations_dp[] = { |
41 | { 0x00FFFFFF, 0x0006000E }, | |
42 | { 0x00D75FFF, 0x0005000A }, | |
43 | { 0x00C30FFF, 0x00040006 }, | |
44 | { 0x80AAAFFF, 0x000B0000 }, | |
45 | { 0x00FFFFFF, 0x0005000A }, | |
46 | { 0x00D75FFF, 0x000C0004 }, | |
47 | { 0x80C30FFF, 0x000B0000 }, | |
48 | { 0x00FFFFFF, 0x00040006 }, | |
49 | { 0x80D75FFF, 0x000B0000 }, | |
45244b87 ED |
50 | }; |
51 | ||
10122051 JN |
52 | static const struct ddi_buf_trans hsw_ddi_translations_fdi[] = { |
53 | { 0x00FFFFFF, 0x0007000E }, | |
54 | { 0x00D75FFF, 0x000F000A }, | |
55 | { 0x00C30FFF, 0x00060006 }, | |
56 | { 0x00AAAFFF, 0x001E0000 }, | |
57 | { 0x00FFFFFF, 0x000F000A }, | |
58 | { 0x00D75FFF, 0x00160004 }, | |
59 | { 0x00C30FFF, 0x001E0000 }, | |
60 | { 0x00FFFFFF, 0x00060006 }, | |
61 | { 0x00D75FFF, 0x001E0000 }, | |
6acab15a PZ |
62 | }; |
63 | ||
10122051 JN |
64 | static const struct ddi_buf_trans hsw_ddi_translations_hdmi[] = { |
65 | /* Idx NT mV d T mV d db */ | |
66 | { 0x00FFFFFF, 0x0006000E }, /* 0: 400 400 0 */ | |
67 | { 0x00E79FFF, 0x000E000C }, /* 1: 400 500 2 */ | |
68 | { 0x00D75FFF, 0x0005000A }, /* 2: 400 600 3.5 */ | |
69 | { 0x00FFFFFF, 0x0005000A }, /* 3: 600 600 0 */ | |
70 | { 0x00E79FFF, 0x001D0007 }, /* 4: 600 750 2 */ | |
71 | { 0x00D75FFF, 0x000C0004 }, /* 5: 600 900 3.5 */ | |
72 | { 0x00FFFFFF, 0x00040006 }, /* 6: 800 800 0 */ | |
73 | { 0x80E79FFF, 0x00030002 }, /* 7: 800 1000 2 */ | |
74 | { 0x00FFFFFF, 0x00140005 }, /* 8: 850 850 0 */ | |
75 | { 0x00FFFFFF, 0x000C0004 }, /* 9: 900 900 0 */ | |
76 | { 0x00FFFFFF, 0x001C0003 }, /* 10: 950 950 0 */ | |
77 | { 0x80FFFFFF, 0x00030002 }, /* 11: 1000 1000 0 */ | |
45244b87 ED |
78 | }; |
79 | ||
10122051 JN |
80 | static const struct ddi_buf_trans bdw_ddi_translations_edp[] = { |
81 | { 0x00FFFFFF, 0x00000012 }, | |
82 | { 0x00EBAFFF, 0x00020011 }, | |
83 | { 0x00C71FFF, 0x0006000F }, | |
84 | { 0x00AAAFFF, 0x000E000A }, | |
85 | { 0x00FFFFFF, 0x00020011 }, | |
86 | { 0x00DB6FFF, 0x0005000F }, | |
87 | { 0x00BEEFFF, 0x000A000C }, | |
88 | { 0x00FFFFFF, 0x0005000F }, | |
89 | { 0x00DB6FFF, 0x000A000C }, | |
300644c7 PZ |
90 | }; |
91 | ||
10122051 JN |
92 | static const struct ddi_buf_trans bdw_ddi_translations_dp[] = { |
93 | { 0x00FFFFFF, 0x0007000E }, | |
94 | { 0x00D75FFF, 0x000E000A }, | |
95 | { 0x00BEFFFF, 0x00140006 }, | |
96 | { 0x80B2CFFF, 0x001B0002 }, | |
97 | { 0x00FFFFFF, 0x000E000A }, | |
17b523ba | 98 | { 0x00DB6FFF, 0x00160005 }, |
6805b2a7 | 99 | { 0x80C71FFF, 0x001A0002 }, |
10122051 JN |
100 | { 0x00F7DFFF, 0x00180004 }, |
101 | { 0x80D75FFF, 0x001B0002 }, | |
e58623cb AR |
102 | }; |
103 | ||
10122051 JN |
104 | static const struct ddi_buf_trans bdw_ddi_translations_fdi[] = { |
105 | { 0x00FFFFFF, 0x0001000E }, | |
106 | { 0x00D75FFF, 0x0004000A }, | |
107 | { 0x00C30FFF, 0x00070006 }, | |
108 | { 0x00AAAFFF, 0x000C0000 }, | |
109 | { 0x00FFFFFF, 0x0004000A }, | |
110 | { 0x00D75FFF, 0x00090004 }, | |
111 | { 0x00C30FFF, 0x000C0000 }, | |
112 | { 0x00FFFFFF, 0x00070006 }, | |
113 | { 0x00D75FFF, 0x000C0000 }, | |
e58623cb AR |
114 | }; |
115 | ||
10122051 JN |
116 | static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = { |
117 | /* Idx NT mV d T mV df db */ | |
118 | { 0x00FFFFFF, 0x0007000E }, /* 0: 400 400 0 */ | |
119 | { 0x00D75FFF, 0x000E000A }, /* 1: 400 600 3.5 */ | |
120 | { 0x00BEFFFF, 0x00140006 }, /* 2: 400 800 6 */ | |
121 | { 0x00FFFFFF, 0x0009000D }, /* 3: 450 450 0 */ | |
122 | { 0x00FFFFFF, 0x000E000A }, /* 4: 600 600 0 */ | |
123 | { 0x00D7FFFF, 0x00140006 }, /* 5: 600 800 2.5 */ | |
124 | { 0x80CB2FFF, 0x001B0002 }, /* 6: 600 1000 4.5 */ | |
125 | { 0x00FFFFFF, 0x00140006 }, /* 7: 800 800 0 */ | |
126 | { 0x80E79FFF, 0x001B0002 }, /* 8: 800 1000 2 */ | |
127 | { 0x80FFFFFF, 0x001B0002 }, /* 9: 1000 1000 0 */ | |
a26aa8ba DL |
128 | }; |
129 | ||
7f88e3af DL |
130 | static const struct ddi_buf_trans skl_ddi_translations_dp[] = { |
131 | { 0x00000018, 0x000000a0 }, | |
132 | { 0x00004014, 0x00000098 }, | |
133 | { 0x00006012, 0x00000088 }, | |
134 | { 0x00008010, 0x00000080 }, | |
135 | { 0x00000018, 0x00000098 }, | |
136 | { 0x00004014, 0x00000088 }, | |
137 | { 0x00006012, 0x00000080 }, | |
138 | { 0x00000018, 0x00000088 }, | |
139 | { 0x00004014, 0x00000080 }, | |
140 | }; | |
141 | ||
142 | static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = { | |
143 | /* Idx NT mV T mV db */ | |
144 | { 0x00000018, 0x000000a0 }, /* 0: 400 400 0 */ | |
145 | { 0x00004014, 0x00000098 }, /* 1: 400 600 3.5 */ | |
146 | { 0x00006012, 0x00000088 }, /* 2: 400 800 6 */ | |
147 | { 0x00000018, 0x0000003c }, /* 3: 450 450 0 */ | |
148 | { 0x00000018, 0x00000098 }, /* 4: 600 600 0 */ | |
149 | { 0x00003015, 0x00000088 }, /* 5: 600 800 2.5 */ | |
150 | { 0x00005013, 0x00000080 }, /* 6: 600 1000 4.5 */ | |
151 | { 0x00000018, 0x00000088 }, /* 7: 800 800 0 */ | |
152 | { 0x00000096, 0x00000080 }, /* 8: 800 1000 2 */ | |
153 | { 0x00000018, 0x00000080 }, /* 9: 1200 1200 0 */ | |
154 | }; | |
155 | ||
20f4dbe4 | 156 | enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder) |
fc914639 | 157 | { |
0bdee30e | 158 | struct drm_encoder *encoder = &intel_encoder->base; |
fc914639 PZ |
159 | int type = intel_encoder->type; |
160 | ||
0e32b39c DA |
161 | if (type == INTEL_OUTPUT_DP_MST) { |
162 | struct intel_digital_port *intel_dig_port = enc_to_mst(encoder)->primary; | |
163 | return intel_dig_port->port; | |
164 | } else if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP || | |
00c09d70 | 165 | type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_UNKNOWN) { |
174edf1f PZ |
166 | struct intel_digital_port *intel_dig_port = |
167 | enc_to_dig_port(encoder); | |
168 | return intel_dig_port->port; | |
0bdee30e | 169 | |
fc914639 PZ |
170 | } else if (type == INTEL_OUTPUT_ANALOG) { |
171 | return PORT_E; | |
0bdee30e | 172 | |
fc914639 PZ |
173 | } else { |
174 | DRM_ERROR("Invalid DDI encoder type %d\n", type); | |
175 | BUG(); | |
176 | } | |
177 | } | |
178 | ||
e58623cb AR |
179 | /* |
180 | * Starting with Haswell, DDI port buffers must be programmed with correct | |
181 | * values in advance. The buffer values are different for FDI and DP modes, | |
45244b87 ED |
182 | * but the HDMI/DVI fields are shared among those. So we program the DDI |
183 | * in either FDI or DP modes only, as HDMI connections will work with both | |
184 | * of those | |
185 | */ | |
ad8d270c | 186 | static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port) |
45244b87 ED |
187 | { |
188 | struct drm_i915_private *dev_priv = dev->dev_private; | |
189 | u32 reg; | |
ce4dd49e | 190 | int i, n_hdmi_entries, hdmi_800mV_0dB; |
6acab15a | 191 | int hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift; |
10122051 JN |
192 | const struct ddi_buf_trans *ddi_translations_fdi; |
193 | const struct ddi_buf_trans *ddi_translations_dp; | |
194 | const struct ddi_buf_trans *ddi_translations_edp; | |
195 | const struct ddi_buf_trans *ddi_translations_hdmi; | |
196 | const struct ddi_buf_trans *ddi_translations; | |
e58623cb | 197 | |
7f88e3af DL |
198 | if (IS_SKYLAKE(dev)) { |
199 | ddi_translations_fdi = NULL; | |
200 | ddi_translations_dp = skl_ddi_translations_dp; | |
201 | ddi_translations_edp = skl_ddi_translations_dp; | |
202 | ddi_translations_hdmi = skl_ddi_translations_hdmi; | |
203 | n_hdmi_entries = ARRAY_SIZE(skl_ddi_translations_hdmi); | |
204 | hdmi_800mV_0dB = 7; | |
205 | } else if (IS_BROADWELL(dev)) { | |
e58623cb AR |
206 | ddi_translations_fdi = bdw_ddi_translations_fdi; |
207 | ddi_translations_dp = bdw_ddi_translations_dp; | |
300644c7 | 208 | ddi_translations_edp = bdw_ddi_translations_edp; |
a26aa8ba | 209 | ddi_translations_hdmi = bdw_ddi_translations_hdmi; |
10122051 | 210 | n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); |
a26aa8ba | 211 | hdmi_800mV_0dB = 7; |
e58623cb AR |
212 | } else if (IS_HASWELL(dev)) { |
213 | ddi_translations_fdi = hsw_ddi_translations_fdi; | |
214 | ddi_translations_dp = hsw_ddi_translations_dp; | |
300644c7 | 215 | ddi_translations_edp = hsw_ddi_translations_dp; |
a26aa8ba | 216 | ddi_translations_hdmi = hsw_ddi_translations_hdmi; |
10122051 | 217 | n_hdmi_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi); |
ce4dd49e | 218 | hdmi_800mV_0dB = 6; |
e58623cb AR |
219 | } else { |
220 | WARN(1, "ddi translation table missing\n"); | |
300644c7 | 221 | ddi_translations_edp = bdw_ddi_translations_dp; |
e58623cb AR |
222 | ddi_translations_fdi = bdw_ddi_translations_fdi; |
223 | ddi_translations_dp = bdw_ddi_translations_dp; | |
a26aa8ba | 224 | ddi_translations_hdmi = bdw_ddi_translations_hdmi; |
10122051 | 225 | n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); |
a26aa8ba | 226 | hdmi_800mV_0dB = 7; |
e58623cb AR |
227 | } |
228 | ||
300644c7 PZ |
229 | switch (port) { |
230 | case PORT_A: | |
231 | ddi_translations = ddi_translations_edp; | |
232 | break; | |
233 | case PORT_B: | |
234 | case PORT_C: | |
300644c7 PZ |
235 | ddi_translations = ddi_translations_dp; |
236 | break; | |
77d8d009 | 237 | case PORT_D: |
5d8a7752 | 238 | if (intel_dp_is_edp(dev, PORT_D)) |
77d8d009 PZ |
239 | ddi_translations = ddi_translations_edp; |
240 | else | |
241 | ddi_translations = ddi_translations_dp; | |
242 | break; | |
300644c7 | 243 | case PORT_E: |
7f88e3af DL |
244 | if (ddi_translations_fdi) |
245 | ddi_translations = ddi_translations_fdi; | |
246 | else | |
247 | ddi_translations = ddi_translations_dp; | |
300644c7 PZ |
248 | break; |
249 | default: | |
250 | BUG(); | |
251 | } | |
45244b87 | 252 | |
f72d19f0 PZ |
253 | for (i = 0, reg = DDI_BUF_TRANS(port); |
254 | i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) { | |
10122051 JN |
255 | I915_WRITE(reg, ddi_translations[i].trans1); |
256 | reg += 4; | |
257 | I915_WRITE(reg, ddi_translations[i].trans2); | |
45244b87 ED |
258 | reg += 4; |
259 | } | |
ce4dd49e DL |
260 | |
261 | /* Choose a good default if VBT is badly populated */ | |
262 | if (hdmi_level == HDMI_LEVEL_SHIFT_UNKNOWN || | |
263 | hdmi_level >= n_hdmi_entries) | |
264 | hdmi_level = hdmi_800mV_0dB; | |
265 | ||
6acab15a | 266 | /* Entry 9 is for HDMI: */ |
10122051 JN |
267 | I915_WRITE(reg, ddi_translations_hdmi[hdmi_level].trans1); |
268 | reg += 4; | |
269 | I915_WRITE(reg, ddi_translations_hdmi[hdmi_level].trans2); | |
270 | reg += 4; | |
45244b87 ED |
271 | } |
272 | ||
273 | /* Program DDI buffers translations for DP. By default, program ports A-D in DP | |
274 | * mode and port E for FDI. | |
275 | */ | |
276 | void intel_prepare_ddi(struct drm_device *dev) | |
277 | { | |
278 | int port; | |
279 | ||
0d536cb4 PZ |
280 | if (!HAS_DDI(dev)) |
281 | return; | |
45244b87 | 282 | |
ad8d270c PZ |
283 | for (port = PORT_A; port <= PORT_E; port++) |
284 | intel_prepare_ddi_buffers(dev, port); | |
45244b87 | 285 | } |
c82e4d26 | 286 | |
248138b5 PZ |
287 | static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv, |
288 | enum port port) | |
289 | { | |
290 | uint32_t reg = DDI_BUF_CTL(port); | |
291 | int i; | |
292 | ||
293 | for (i = 0; i < 8; i++) { | |
294 | udelay(1); | |
295 | if (I915_READ(reg) & DDI_BUF_IS_IDLE) | |
296 | return; | |
297 | } | |
298 | DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port)); | |
299 | } | |
c82e4d26 ED |
300 | |
301 | /* Starting with Haswell, different DDI ports can work in FDI mode for | |
302 | * connection to the PCH-located connectors. For this, it is necessary to train | |
303 | * both the DDI port and PCH receiver for the desired DDI buffer settings. | |
304 | * | |
305 | * The recommended port to work in FDI mode is DDI E, which we use here. Also, | |
306 | * please note that when FDI mode is active on DDI E, it shares 2 lines with | |
307 | * DDI A (which is used for eDP) | |
308 | */ | |
309 | ||
310 | void hsw_fdi_link_train(struct drm_crtc *crtc) | |
311 | { | |
312 | struct drm_device *dev = crtc->dev; | |
313 | struct drm_i915_private *dev_priv = dev->dev_private; | |
314 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
04945641 | 315 | u32 temp, i, rx_ctl_val; |
c82e4d26 | 316 | |
04945641 PZ |
317 | /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the |
318 | * mode set "sequence for CRT port" document: | |
319 | * - TP1 to TP2 time with the default value | |
320 | * - FDI delay to 90h | |
8693a824 DL |
321 | * |
322 | * WaFDIAutoLinkSetTimingOverrride:hsw | |
04945641 PZ |
323 | */ |
324 | I915_WRITE(_FDI_RXA_MISC, FDI_RX_PWRDN_LANE1_VAL(2) | | |
325 | FDI_RX_PWRDN_LANE0_VAL(2) | | |
326 | FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); | |
327 | ||
328 | /* Enable the PCH Receiver FDI PLL */ | |
3e68320e | 329 | rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE | |
33d29b14 | 330 | FDI_RX_PLL_ENABLE | |
627eb5a3 | 331 | FDI_DP_PORT_WIDTH(intel_crtc->config.fdi_lanes); |
04945641 PZ |
332 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); |
333 | POSTING_READ(_FDI_RXA_CTL); | |
334 | udelay(220); | |
335 | ||
336 | /* Switch from Rawclk to PCDclk */ | |
337 | rx_ctl_val |= FDI_PCDCLK; | |
338 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
339 | ||
340 | /* Configure Port Clock Select */ | |
de7cfc63 DV |
341 | I915_WRITE(PORT_CLK_SEL(PORT_E), intel_crtc->config.ddi_pll_sel); |
342 | WARN_ON(intel_crtc->config.ddi_pll_sel != PORT_CLK_SEL_SPLL); | |
04945641 PZ |
343 | |
344 | /* Start the training iterating through available voltages and emphasis, | |
345 | * testing each value twice. */ | |
10122051 | 346 | for (i = 0; i < ARRAY_SIZE(hsw_ddi_translations_fdi) * 2; i++) { |
c82e4d26 ED |
347 | /* Configure DP_TP_CTL with auto-training */ |
348 | I915_WRITE(DP_TP_CTL(PORT_E), | |
349 | DP_TP_CTL_FDI_AUTOTRAIN | | |
350 | DP_TP_CTL_ENHANCED_FRAME_ENABLE | | |
351 | DP_TP_CTL_LINK_TRAIN_PAT1 | | |
352 | DP_TP_CTL_ENABLE); | |
353 | ||
876a8cdf DL |
354 | /* Configure and enable DDI_BUF_CTL for DDI E with next voltage. |
355 | * DDI E does not support port reversal, the functionality is | |
356 | * achieved on the PCH side in FDI_RX_CTL, so no need to set the | |
357 | * port reversal bit */ | |
c82e4d26 | 358 | I915_WRITE(DDI_BUF_CTL(PORT_E), |
04945641 | 359 | DDI_BUF_CTL_ENABLE | |
33d29b14 | 360 | ((intel_crtc->config.fdi_lanes - 1) << 1) | |
c5fe6a06 | 361 | DDI_BUF_TRANS_SELECT(i / 2)); |
04945641 | 362 | POSTING_READ(DDI_BUF_CTL(PORT_E)); |
c82e4d26 ED |
363 | |
364 | udelay(600); | |
365 | ||
04945641 PZ |
366 | /* Program PCH FDI Receiver TU */ |
367 | I915_WRITE(_FDI_RXA_TUSIZE1, TU_SIZE(64)); | |
368 | ||
369 | /* Enable PCH FDI Receiver with auto-training */ | |
370 | rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO; | |
371 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
372 | POSTING_READ(_FDI_RXA_CTL); | |
373 | ||
374 | /* Wait for FDI receiver lane calibration */ | |
375 | udelay(30); | |
376 | ||
377 | /* Unset FDI_RX_MISC pwrdn lanes */ | |
378 | temp = I915_READ(_FDI_RXA_MISC); | |
379 | temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
380 | I915_WRITE(_FDI_RXA_MISC, temp); | |
381 | POSTING_READ(_FDI_RXA_MISC); | |
382 | ||
383 | /* Wait for FDI auto training time */ | |
384 | udelay(5); | |
c82e4d26 ED |
385 | |
386 | temp = I915_READ(DP_TP_STATUS(PORT_E)); | |
387 | if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) { | |
04945641 | 388 | DRM_DEBUG_KMS("FDI link training done on step %d\n", i); |
c82e4d26 ED |
389 | |
390 | /* Enable normal pixel sending for FDI */ | |
391 | I915_WRITE(DP_TP_CTL(PORT_E), | |
04945641 PZ |
392 | DP_TP_CTL_FDI_AUTOTRAIN | |
393 | DP_TP_CTL_LINK_TRAIN_NORMAL | | |
394 | DP_TP_CTL_ENHANCED_FRAME_ENABLE | | |
395 | DP_TP_CTL_ENABLE); | |
c82e4d26 | 396 | |
04945641 | 397 | return; |
c82e4d26 | 398 | } |
04945641 | 399 | |
248138b5 PZ |
400 | temp = I915_READ(DDI_BUF_CTL(PORT_E)); |
401 | temp &= ~DDI_BUF_CTL_ENABLE; | |
402 | I915_WRITE(DDI_BUF_CTL(PORT_E), temp); | |
403 | POSTING_READ(DDI_BUF_CTL(PORT_E)); | |
404 | ||
04945641 | 405 | /* Disable DP_TP_CTL and FDI_RX_CTL and retry */ |
248138b5 PZ |
406 | temp = I915_READ(DP_TP_CTL(PORT_E)); |
407 | temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
408 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
409 | I915_WRITE(DP_TP_CTL(PORT_E), temp); | |
410 | POSTING_READ(DP_TP_CTL(PORT_E)); | |
411 | ||
412 | intel_wait_ddi_buf_idle(dev_priv, PORT_E); | |
04945641 PZ |
413 | |
414 | rx_ctl_val &= ~FDI_RX_ENABLE; | |
415 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
248138b5 | 416 | POSTING_READ(_FDI_RXA_CTL); |
04945641 PZ |
417 | |
418 | /* Reset FDI_RX_MISC pwrdn lanes */ | |
419 | temp = I915_READ(_FDI_RXA_MISC); | |
420 | temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
421 | temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); | |
422 | I915_WRITE(_FDI_RXA_MISC, temp); | |
248138b5 | 423 | POSTING_READ(_FDI_RXA_MISC); |
c82e4d26 ED |
424 | } |
425 | ||
04945641 | 426 | DRM_ERROR("FDI link training failed!\n"); |
c82e4d26 | 427 | } |
0e72a5b5 | 428 | |
44905a27 DA |
429 | void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder) |
430 | { | |
431 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
432 | struct intel_digital_port *intel_dig_port = | |
433 | enc_to_dig_port(&encoder->base); | |
434 | ||
435 | intel_dp->DP = intel_dig_port->saved_port_bits | | |
c5fe6a06 | 436 | DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0); |
44905a27 DA |
437 | intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count); |
438 | ||
439 | } | |
440 | ||
8d9ddbcb PZ |
441 | static struct intel_encoder * |
442 | intel_ddi_get_crtc_encoder(struct drm_crtc *crtc) | |
443 | { | |
444 | struct drm_device *dev = crtc->dev; | |
445 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
446 | struct intel_encoder *intel_encoder, *ret = NULL; | |
447 | int num_encoders = 0; | |
448 | ||
449 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { | |
450 | ret = intel_encoder; | |
451 | num_encoders++; | |
452 | } | |
453 | ||
454 | if (num_encoders != 1) | |
84f44ce7 VS |
455 | WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders, |
456 | pipe_name(intel_crtc->pipe)); | |
8d9ddbcb PZ |
457 | |
458 | BUG_ON(ret == NULL); | |
459 | return ret; | |
460 | } | |
461 | ||
1c0b85c5 | 462 | #define LC_FREQ 2700 |
27893390 | 463 | #define LC_FREQ_2K U64_C(LC_FREQ * 2000) |
1c0b85c5 DL |
464 | |
465 | #define P_MIN 2 | |
466 | #define P_MAX 64 | |
467 | #define P_INC 2 | |
468 | ||
469 | /* Constraints for PLL good behavior */ | |
470 | #define REF_MIN 48 | |
471 | #define REF_MAX 400 | |
472 | #define VCO_MIN 2400 | |
473 | #define VCO_MAX 4800 | |
474 | ||
27893390 DL |
475 | #define abs_diff(a, b) ({ \ |
476 | typeof(a) __a = (a); \ | |
477 | typeof(b) __b = (b); \ | |
478 | (void) (&__a == &__b); \ | |
479 | __a > __b ? (__a - __b) : (__b - __a); }) | |
1c0b85c5 DL |
480 | |
481 | struct wrpll_rnp { | |
482 | unsigned p, n2, r2; | |
483 | }; | |
484 | ||
485 | static unsigned wrpll_get_budget_for_freq(int clock) | |
6441ab5f | 486 | { |
1c0b85c5 DL |
487 | unsigned budget; |
488 | ||
489 | switch (clock) { | |
490 | case 25175000: | |
491 | case 25200000: | |
492 | case 27000000: | |
493 | case 27027000: | |
494 | case 37762500: | |
495 | case 37800000: | |
496 | case 40500000: | |
497 | case 40541000: | |
498 | case 54000000: | |
499 | case 54054000: | |
500 | case 59341000: | |
501 | case 59400000: | |
502 | case 72000000: | |
503 | case 74176000: | |
504 | case 74250000: | |
505 | case 81000000: | |
506 | case 81081000: | |
507 | case 89012000: | |
508 | case 89100000: | |
509 | case 108000000: | |
510 | case 108108000: | |
511 | case 111264000: | |
512 | case 111375000: | |
513 | case 148352000: | |
514 | case 148500000: | |
515 | case 162000000: | |
516 | case 162162000: | |
517 | case 222525000: | |
518 | case 222750000: | |
519 | case 296703000: | |
520 | case 297000000: | |
521 | budget = 0; | |
522 | break; | |
523 | case 233500000: | |
524 | case 245250000: | |
525 | case 247750000: | |
526 | case 253250000: | |
527 | case 298000000: | |
528 | budget = 1500; | |
529 | break; | |
530 | case 169128000: | |
531 | case 169500000: | |
532 | case 179500000: | |
533 | case 202000000: | |
534 | budget = 2000; | |
535 | break; | |
536 | case 256250000: | |
537 | case 262500000: | |
538 | case 270000000: | |
539 | case 272500000: | |
540 | case 273750000: | |
541 | case 280750000: | |
542 | case 281250000: | |
543 | case 286000000: | |
544 | case 291750000: | |
545 | budget = 4000; | |
546 | break; | |
547 | case 267250000: | |
548 | case 268500000: | |
549 | budget = 5000; | |
550 | break; | |
551 | default: | |
552 | budget = 1000; | |
553 | break; | |
554 | } | |
6441ab5f | 555 | |
1c0b85c5 DL |
556 | return budget; |
557 | } | |
558 | ||
559 | static void wrpll_update_rnp(uint64_t freq2k, unsigned budget, | |
560 | unsigned r2, unsigned n2, unsigned p, | |
561 | struct wrpll_rnp *best) | |
562 | { | |
563 | uint64_t a, b, c, d, diff, diff_best; | |
6441ab5f | 564 | |
1c0b85c5 DL |
565 | /* No best (r,n,p) yet */ |
566 | if (best->p == 0) { | |
567 | best->p = p; | |
568 | best->n2 = n2; | |
569 | best->r2 = r2; | |
570 | return; | |
571 | } | |
6441ab5f | 572 | |
1c0b85c5 DL |
573 | /* |
574 | * Output clock is (LC_FREQ_2K / 2000) * N / (P * R), which compares to | |
575 | * freq2k. | |
576 | * | |
577 | * delta = 1e6 * | |
578 | * abs(freq2k - (LC_FREQ_2K * n2/(p * r2))) / | |
579 | * freq2k; | |
580 | * | |
581 | * and we would like delta <= budget. | |
582 | * | |
583 | * If the discrepancy is above the PPM-based budget, always prefer to | |
584 | * improve upon the previous solution. However, if you're within the | |
585 | * budget, try to maximize Ref * VCO, that is N / (P * R^2). | |
586 | */ | |
587 | a = freq2k * budget * p * r2; | |
588 | b = freq2k * budget * best->p * best->r2; | |
27893390 DL |
589 | diff = abs_diff(freq2k * p * r2, LC_FREQ_2K * n2); |
590 | diff_best = abs_diff(freq2k * best->p * best->r2, | |
591 | LC_FREQ_2K * best->n2); | |
1c0b85c5 DL |
592 | c = 1000000 * diff; |
593 | d = 1000000 * diff_best; | |
594 | ||
595 | if (a < c && b < d) { | |
596 | /* If both are above the budget, pick the closer */ | |
597 | if (best->p * best->r2 * diff < p * r2 * diff_best) { | |
598 | best->p = p; | |
599 | best->n2 = n2; | |
600 | best->r2 = r2; | |
601 | } | |
602 | } else if (a >= c && b < d) { | |
603 | /* If A is below the threshold but B is above it? Update. */ | |
604 | best->p = p; | |
605 | best->n2 = n2; | |
606 | best->r2 = r2; | |
607 | } else if (a >= c && b >= d) { | |
608 | /* Both are below the limit, so pick the higher n2/(r2*r2) */ | |
609 | if (n2 * best->r2 * best->r2 > best->n2 * r2 * r2) { | |
610 | best->p = p; | |
611 | best->n2 = n2; | |
612 | best->r2 = r2; | |
613 | } | |
614 | } | |
615 | /* Otherwise a < c && b >= d, do nothing */ | |
616 | } | |
617 | ||
11578553 JB |
618 | static int intel_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv, |
619 | int reg) | |
620 | { | |
621 | int refclk = LC_FREQ; | |
622 | int n, p, r; | |
623 | u32 wrpll; | |
624 | ||
625 | wrpll = I915_READ(reg); | |
114fe488 DV |
626 | switch (wrpll & WRPLL_PLL_REF_MASK) { |
627 | case WRPLL_PLL_SSC: | |
628 | case WRPLL_PLL_NON_SSC: | |
11578553 JB |
629 | /* |
630 | * We could calculate spread here, but our checking | |
631 | * code only cares about 5% accuracy, and spread is a max of | |
632 | * 0.5% downspread. | |
633 | */ | |
634 | refclk = 135; | |
635 | break; | |
114fe488 | 636 | case WRPLL_PLL_LCPLL: |
11578553 JB |
637 | refclk = LC_FREQ; |
638 | break; | |
639 | default: | |
640 | WARN(1, "bad wrpll refclk\n"); | |
641 | return 0; | |
642 | } | |
643 | ||
644 | r = wrpll & WRPLL_DIVIDER_REF_MASK; | |
645 | p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT; | |
646 | n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT; | |
647 | ||
20f0ec16 JB |
648 | /* Convert to KHz, p & r have a fixed point portion */ |
649 | return (refclk * n * 100) / (p * r); | |
11578553 JB |
650 | } |
651 | ||
3d51278a DV |
652 | static void hsw_ddi_clock_get(struct intel_encoder *encoder, |
653 | struct intel_crtc_config *pipe_config) | |
11578553 JB |
654 | { |
655 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
11578553 JB |
656 | int link_clock = 0; |
657 | u32 val, pll; | |
658 | ||
26804afd | 659 | val = pipe_config->ddi_pll_sel; |
11578553 JB |
660 | switch (val & PORT_CLK_SEL_MASK) { |
661 | case PORT_CLK_SEL_LCPLL_810: | |
662 | link_clock = 81000; | |
663 | break; | |
664 | case PORT_CLK_SEL_LCPLL_1350: | |
665 | link_clock = 135000; | |
666 | break; | |
667 | case PORT_CLK_SEL_LCPLL_2700: | |
668 | link_clock = 270000; | |
669 | break; | |
670 | case PORT_CLK_SEL_WRPLL1: | |
671 | link_clock = intel_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL1); | |
672 | break; | |
673 | case PORT_CLK_SEL_WRPLL2: | |
674 | link_clock = intel_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL2); | |
675 | break; | |
676 | case PORT_CLK_SEL_SPLL: | |
677 | pll = I915_READ(SPLL_CTL) & SPLL_PLL_FREQ_MASK; | |
678 | if (pll == SPLL_PLL_FREQ_810MHz) | |
679 | link_clock = 81000; | |
680 | else if (pll == SPLL_PLL_FREQ_1350MHz) | |
681 | link_clock = 135000; | |
682 | else if (pll == SPLL_PLL_FREQ_2700MHz) | |
683 | link_clock = 270000; | |
684 | else { | |
685 | WARN(1, "bad spll freq\n"); | |
686 | return; | |
687 | } | |
688 | break; | |
689 | default: | |
690 | WARN(1, "bad port clock sel\n"); | |
691 | return; | |
692 | } | |
693 | ||
694 | pipe_config->port_clock = link_clock * 2; | |
695 | ||
696 | if (pipe_config->has_pch_encoder) | |
697 | pipe_config->adjusted_mode.crtc_clock = | |
698 | intel_dotclock_calculate(pipe_config->port_clock, | |
699 | &pipe_config->fdi_m_n); | |
700 | else if (pipe_config->has_dp_encoder) | |
701 | pipe_config->adjusted_mode.crtc_clock = | |
702 | intel_dotclock_calculate(pipe_config->port_clock, | |
703 | &pipe_config->dp_m_n); | |
704 | else | |
705 | pipe_config->adjusted_mode.crtc_clock = pipe_config->port_clock; | |
706 | } | |
707 | ||
3d51278a DV |
708 | void intel_ddi_clock_get(struct intel_encoder *encoder, |
709 | struct intel_crtc_config *pipe_config) | |
710 | { | |
711 | hsw_ddi_clock_get(encoder, pipe_config); | |
712 | } | |
713 | ||
1c0b85c5 | 714 | static void |
d664c0ce DL |
715 | hsw_ddi_calculate_wrpll(int clock /* in Hz */, |
716 | unsigned *r2_out, unsigned *n2_out, unsigned *p_out) | |
1c0b85c5 DL |
717 | { |
718 | uint64_t freq2k; | |
719 | unsigned p, n2, r2; | |
720 | struct wrpll_rnp best = { 0, 0, 0 }; | |
721 | unsigned budget; | |
722 | ||
723 | freq2k = clock / 100; | |
724 | ||
725 | budget = wrpll_get_budget_for_freq(clock); | |
726 | ||
727 | /* Special case handling for 540 pixel clock: bypass WR PLL entirely | |
728 | * and directly pass the LC PLL to it. */ | |
729 | if (freq2k == 5400000) { | |
730 | *n2_out = 2; | |
731 | *p_out = 1; | |
732 | *r2_out = 2; | |
733 | return; | |
734 | } | |
735 | ||
736 | /* | |
737 | * Ref = LC_FREQ / R, where Ref is the actual reference input seen by | |
738 | * the WR PLL. | |
739 | * | |
740 | * We want R so that REF_MIN <= Ref <= REF_MAX. | |
741 | * Injecting R2 = 2 * R gives: | |
742 | * REF_MAX * r2 > LC_FREQ * 2 and | |
743 | * REF_MIN * r2 < LC_FREQ * 2 | |
744 | * | |
745 | * Which means the desired boundaries for r2 are: | |
746 | * LC_FREQ * 2 / REF_MAX < r2 < LC_FREQ * 2 / REF_MIN | |
747 | * | |
748 | */ | |
749 | for (r2 = LC_FREQ * 2 / REF_MAX + 1; | |
750 | r2 <= LC_FREQ * 2 / REF_MIN; | |
751 | r2++) { | |
752 | ||
753 | /* | |
754 | * VCO = N * Ref, that is: VCO = N * LC_FREQ / R | |
755 | * | |
756 | * Once again we want VCO_MIN <= VCO <= VCO_MAX. | |
757 | * Injecting R2 = 2 * R and N2 = 2 * N, we get: | |
758 | * VCO_MAX * r2 > n2 * LC_FREQ and | |
759 | * VCO_MIN * r2 < n2 * LC_FREQ) | |
760 | * | |
761 | * Which means the desired boundaries for n2 are: | |
762 | * VCO_MIN * r2 / LC_FREQ < n2 < VCO_MAX * r2 / LC_FREQ | |
763 | */ | |
764 | for (n2 = VCO_MIN * r2 / LC_FREQ + 1; | |
765 | n2 <= VCO_MAX * r2 / LC_FREQ; | |
766 | n2++) { | |
767 | ||
768 | for (p = P_MIN; p <= P_MAX; p += P_INC) | |
769 | wrpll_update_rnp(freq2k, budget, | |
770 | r2, n2, p, &best); | |
771 | } | |
772 | } | |
6441ab5f | 773 | |
1c0b85c5 DL |
774 | *n2_out = best.n2; |
775 | *p_out = best.p; | |
776 | *r2_out = best.r2; | |
6441ab5f PZ |
777 | } |
778 | ||
0220ab6e | 779 | static bool |
d664c0ce DL |
780 | hsw_ddi_pll_select(struct intel_crtc *intel_crtc, |
781 | struct intel_encoder *intel_encoder, | |
782 | int clock) | |
6441ab5f | 783 | { |
d664c0ce | 784 | if (intel_encoder->type == INTEL_OUTPUT_HDMI) { |
e0b01be4 | 785 | struct intel_shared_dpll *pll; |
716c2e55 | 786 | uint32_t val; |
1c0b85c5 | 787 | unsigned p, n2, r2; |
6441ab5f | 788 | |
d664c0ce | 789 | hsw_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p); |
0694001b | 790 | |
114fe488 | 791 | val = WRPLL_PLL_ENABLE | WRPLL_PLL_LCPLL | |
0694001b PZ |
792 | WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) | |
793 | WRPLL_DIVIDER_POST(p); | |
794 | ||
716c2e55 | 795 | intel_crtc->config.dpll_hw_state.wrpll = val; |
6441ab5f | 796 | |
716c2e55 DV |
797 | pll = intel_get_shared_dpll(intel_crtc); |
798 | if (pll == NULL) { | |
799 | DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n", | |
800 | pipe_name(intel_crtc->pipe)); | |
801 | return false; | |
0694001b | 802 | } |
d452c5b6 | 803 | |
716c2e55 | 804 | intel_crtc->config.ddi_pll_sel = PORT_CLK_SEL_WRPLL(pll->id); |
6441ab5f PZ |
805 | } |
806 | ||
6441ab5f PZ |
807 | return true; |
808 | } | |
809 | ||
0220ab6e DL |
810 | |
811 | /* | |
812 | * Tries to find a *shared* PLL for the CRTC and store it in | |
813 | * intel_crtc->ddi_pll_sel. | |
814 | * | |
815 | * For private DPLLs, compute_config() should do the selection for us. This | |
816 | * function should be folded into compute_config() eventually. | |
817 | */ | |
818 | bool intel_ddi_pll_select(struct intel_crtc *intel_crtc) | |
819 | { | |
820 | struct drm_crtc *crtc = &intel_crtc->base; | |
821 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
0220ab6e DL |
822 | int clock = intel_crtc->config.port_clock; |
823 | ||
824 | intel_put_shared_dpll(intel_crtc); | |
825 | ||
d664c0ce | 826 | return hsw_ddi_pll_select(intel_crtc, intel_encoder, clock); |
0220ab6e DL |
827 | } |
828 | ||
dae84799 PZ |
829 | void intel_ddi_set_pipe_settings(struct drm_crtc *crtc) |
830 | { | |
831 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
832 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
833 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
3b117c8f | 834 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
dae84799 PZ |
835 | int type = intel_encoder->type; |
836 | uint32_t temp; | |
837 | ||
0e32b39c | 838 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP || type == INTEL_OUTPUT_DP_MST) { |
c9809791 | 839 | temp = TRANS_MSA_SYNC_CLK; |
965e0c48 | 840 | switch (intel_crtc->config.pipe_bpp) { |
dae84799 | 841 | case 18: |
c9809791 | 842 | temp |= TRANS_MSA_6_BPC; |
dae84799 PZ |
843 | break; |
844 | case 24: | |
c9809791 | 845 | temp |= TRANS_MSA_8_BPC; |
dae84799 PZ |
846 | break; |
847 | case 30: | |
c9809791 | 848 | temp |= TRANS_MSA_10_BPC; |
dae84799 PZ |
849 | break; |
850 | case 36: | |
c9809791 | 851 | temp |= TRANS_MSA_12_BPC; |
dae84799 PZ |
852 | break; |
853 | default: | |
4e53c2e0 | 854 | BUG(); |
dae84799 | 855 | } |
c9809791 | 856 | I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp); |
dae84799 PZ |
857 | } |
858 | } | |
859 | ||
0e32b39c DA |
860 | void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state) |
861 | { | |
862 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
863 | struct drm_device *dev = crtc->dev; | |
864 | struct drm_i915_private *dev_priv = dev->dev_private; | |
865 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; | |
866 | uint32_t temp; | |
867 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
868 | if (state == true) | |
869 | temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC; | |
870 | else | |
871 | temp &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC; | |
872 | I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); | |
873 | } | |
874 | ||
8228c251 | 875 | void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc) |
8d9ddbcb PZ |
876 | { |
877 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
878 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
7739c33b | 879 | struct drm_encoder *encoder = &intel_encoder->base; |
c7670b10 PZ |
880 | struct drm_device *dev = crtc->dev; |
881 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8d9ddbcb | 882 | enum pipe pipe = intel_crtc->pipe; |
3b117c8f | 883 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
174edf1f | 884 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
7739c33b | 885 | int type = intel_encoder->type; |
8d9ddbcb PZ |
886 | uint32_t temp; |
887 | ||
ad80a810 PZ |
888 | /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */ |
889 | temp = TRANS_DDI_FUNC_ENABLE; | |
174edf1f | 890 | temp |= TRANS_DDI_SELECT_PORT(port); |
dfcef252 | 891 | |
965e0c48 | 892 | switch (intel_crtc->config.pipe_bpp) { |
dfcef252 | 893 | case 18: |
ad80a810 | 894 | temp |= TRANS_DDI_BPC_6; |
dfcef252 PZ |
895 | break; |
896 | case 24: | |
ad80a810 | 897 | temp |= TRANS_DDI_BPC_8; |
dfcef252 PZ |
898 | break; |
899 | case 30: | |
ad80a810 | 900 | temp |= TRANS_DDI_BPC_10; |
dfcef252 PZ |
901 | break; |
902 | case 36: | |
ad80a810 | 903 | temp |= TRANS_DDI_BPC_12; |
dfcef252 PZ |
904 | break; |
905 | default: | |
4e53c2e0 | 906 | BUG(); |
dfcef252 | 907 | } |
72662e10 | 908 | |
a666283e | 909 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC) |
ad80a810 | 910 | temp |= TRANS_DDI_PVSYNC; |
a666283e | 911 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC) |
ad80a810 | 912 | temp |= TRANS_DDI_PHSYNC; |
f63eb7c4 | 913 | |
e6f0bfc4 PZ |
914 | if (cpu_transcoder == TRANSCODER_EDP) { |
915 | switch (pipe) { | |
916 | case PIPE_A: | |
c7670b10 PZ |
917 | /* On Haswell, can only use the always-on power well for |
918 | * eDP when not using the panel fitter, and when not | |
919 | * using motion blur mitigation (which we don't | |
920 | * support). */ | |
fabf6e51 DV |
921 | if (IS_HASWELL(dev) && |
922 | (intel_crtc->config.pch_pfit.enabled || | |
923 | intel_crtc->config.pch_pfit.force_thru)) | |
d6dd9eb1 DV |
924 | temp |= TRANS_DDI_EDP_INPUT_A_ONOFF; |
925 | else | |
926 | temp |= TRANS_DDI_EDP_INPUT_A_ON; | |
e6f0bfc4 PZ |
927 | break; |
928 | case PIPE_B: | |
929 | temp |= TRANS_DDI_EDP_INPUT_B_ONOFF; | |
930 | break; | |
931 | case PIPE_C: | |
932 | temp |= TRANS_DDI_EDP_INPUT_C_ONOFF; | |
933 | break; | |
934 | default: | |
935 | BUG(); | |
936 | break; | |
937 | } | |
938 | } | |
939 | ||
7739c33b | 940 | if (type == INTEL_OUTPUT_HDMI) { |
6897b4b5 | 941 | if (intel_crtc->config.has_hdmi_sink) |
ad80a810 | 942 | temp |= TRANS_DDI_MODE_SELECT_HDMI; |
8d9ddbcb | 943 | else |
ad80a810 | 944 | temp |= TRANS_DDI_MODE_SELECT_DVI; |
8d9ddbcb | 945 | |
7739c33b | 946 | } else if (type == INTEL_OUTPUT_ANALOG) { |
ad80a810 | 947 | temp |= TRANS_DDI_MODE_SELECT_FDI; |
33d29b14 | 948 | temp |= (intel_crtc->config.fdi_lanes - 1) << 1; |
7739c33b PZ |
949 | |
950 | } else if (type == INTEL_OUTPUT_DISPLAYPORT || | |
951 | type == INTEL_OUTPUT_EDP) { | |
952 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
953 | ||
0e32b39c DA |
954 | if (intel_dp->is_mst) { |
955 | temp |= TRANS_DDI_MODE_SELECT_DP_MST; | |
956 | } else | |
957 | temp |= TRANS_DDI_MODE_SELECT_DP_SST; | |
958 | ||
959 | temp |= DDI_PORT_WIDTH(intel_dp->lane_count); | |
960 | } else if (type == INTEL_OUTPUT_DP_MST) { | |
961 | struct intel_dp *intel_dp = &enc_to_mst(encoder)->primary->dp; | |
962 | ||
963 | if (intel_dp->is_mst) { | |
964 | temp |= TRANS_DDI_MODE_SELECT_DP_MST; | |
965 | } else | |
966 | temp |= TRANS_DDI_MODE_SELECT_DP_SST; | |
7739c33b | 967 | |
17aa6be9 | 968 | temp |= DDI_PORT_WIDTH(intel_dp->lane_count); |
8d9ddbcb | 969 | } else { |
84f44ce7 VS |
970 | WARN(1, "Invalid encoder type %d for pipe %c\n", |
971 | intel_encoder->type, pipe_name(pipe)); | |
8d9ddbcb PZ |
972 | } |
973 | ||
ad80a810 | 974 | I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); |
8d9ddbcb | 975 | } |
72662e10 | 976 | |
ad80a810 PZ |
977 | void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv, |
978 | enum transcoder cpu_transcoder) | |
8d9ddbcb | 979 | { |
ad80a810 | 980 | uint32_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder); |
8d9ddbcb PZ |
981 | uint32_t val = I915_READ(reg); |
982 | ||
0e32b39c | 983 | val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK | TRANS_DDI_DP_VC_PAYLOAD_ALLOC); |
ad80a810 | 984 | val |= TRANS_DDI_PORT_NONE; |
8d9ddbcb | 985 | I915_WRITE(reg, val); |
72662e10 ED |
986 | } |
987 | ||
bcbc889b PZ |
988 | bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector) |
989 | { | |
990 | struct drm_device *dev = intel_connector->base.dev; | |
991 | struct drm_i915_private *dev_priv = dev->dev_private; | |
992 | struct intel_encoder *intel_encoder = intel_connector->encoder; | |
993 | int type = intel_connector->base.connector_type; | |
994 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
995 | enum pipe pipe = 0; | |
996 | enum transcoder cpu_transcoder; | |
882244a3 | 997 | enum intel_display_power_domain power_domain; |
bcbc889b PZ |
998 | uint32_t tmp; |
999 | ||
882244a3 | 1000 | power_domain = intel_display_port_power_domain(intel_encoder); |
f458ebbc | 1001 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
882244a3 PZ |
1002 | return false; |
1003 | ||
bcbc889b PZ |
1004 | if (!intel_encoder->get_hw_state(intel_encoder, &pipe)) |
1005 | return false; | |
1006 | ||
1007 | if (port == PORT_A) | |
1008 | cpu_transcoder = TRANSCODER_EDP; | |
1009 | else | |
1a240d4d | 1010 | cpu_transcoder = (enum transcoder) pipe; |
bcbc889b PZ |
1011 | |
1012 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
1013 | ||
1014 | switch (tmp & TRANS_DDI_MODE_SELECT_MASK) { | |
1015 | case TRANS_DDI_MODE_SELECT_HDMI: | |
1016 | case TRANS_DDI_MODE_SELECT_DVI: | |
1017 | return (type == DRM_MODE_CONNECTOR_HDMIA); | |
1018 | ||
1019 | case TRANS_DDI_MODE_SELECT_DP_SST: | |
1020 | if (type == DRM_MODE_CONNECTOR_eDP) | |
1021 | return true; | |
bcbc889b | 1022 | return (type == DRM_MODE_CONNECTOR_DisplayPort); |
0e32b39c DA |
1023 | case TRANS_DDI_MODE_SELECT_DP_MST: |
1024 | /* if the transcoder is in MST state then | |
1025 | * connector isn't connected */ | |
1026 | return false; | |
bcbc889b PZ |
1027 | |
1028 | case TRANS_DDI_MODE_SELECT_FDI: | |
1029 | return (type == DRM_MODE_CONNECTOR_VGA); | |
1030 | ||
1031 | default: | |
1032 | return false; | |
1033 | } | |
1034 | } | |
1035 | ||
85234cdc DV |
1036 | bool intel_ddi_get_hw_state(struct intel_encoder *encoder, |
1037 | enum pipe *pipe) | |
1038 | { | |
1039 | struct drm_device *dev = encoder->base.dev; | |
1040 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fe43d3f5 | 1041 | enum port port = intel_ddi_get_encoder_port(encoder); |
6d129bea | 1042 | enum intel_display_power_domain power_domain; |
85234cdc DV |
1043 | u32 tmp; |
1044 | int i; | |
1045 | ||
6d129bea | 1046 | power_domain = intel_display_port_power_domain(encoder); |
f458ebbc | 1047 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
1048 | return false; |
1049 | ||
fe43d3f5 | 1050 | tmp = I915_READ(DDI_BUF_CTL(port)); |
85234cdc DV |
1051 | |
1052 | if (!(tmp & DDI_BUF_CTL_ENABLE)) | |
1053 | return false; | |
1054 | ||
ad80a810 PZ |
1055 | if (port == PORT_A) { |
1056 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP)); | |
85234cdc | 1057 | |
ad80a810 PZ |
1058 | switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { |
1059 | case TRANS_DDI_EDP_INPUT_A_ON: | |
1060 | case TRANS_DDI_EDP_INPUT_A_ONOFF: | |
1061 | *pipe = PIPE_A; | |
1062 | break; | |
1063 | case TRANS_DDI_EDP_INPUT_B_ONOFF: | |
1064 | *pipe = PIPE_B; | |
1065 | break; | |
1066 | case TRANS_DDI_EDP_INPUT_C_ONOFF: | |
1067 | *pipe = PIPE_C; | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | return true; | |
1072 | } else { | |
1073 | for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) { | |
1074 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(i)); | |
1075 | ||
1076 | if ((tmp & TRANS_DDI_PORT_MASK) | |
1077 | == TRANS_DDI_SELECT_PORT(port)) { | |
0e32b39c DA |
1078 | if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_DP_MST) |
1079 | return false; | |
1080 | ||
ad80a810 PZ |
1081 | *pipe = i; |
1082 | return true; | |
1083 | } | |
85234cdc DV |
1084 | } |
1085 | } | |
1086 | ||
84f44ce7 | 1087 | DRM_DEBUG_KMS("No pipe for ddi port %c found\n", port_name(port)); |
85234cdc | 1088 | |
22f9fe50 | 1089 | return false; |
85234cdc DV |
1090 | } |
1091 | ||
fc914639 PZ |
1092 | void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc) |
1093 | { | |
1094 | struct drm_crtc *crtc = &intel_crtc->base; | |
1095 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
1096 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
1097 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
3b117c8f | 1098 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
fc914639 | 1099 | |
bb523fc0 PZ |
1100 | if (cpu_transcoder != TRANSCODER_EDP) |
1101 | I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), | |
1102 | TRANS_CLK_SEL_PORT(port)); | |
fc914639 PZ |
1103 | } |
1104 | ||
1105 | void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc) | |
1106 | { | |
1107 | struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private; | |
3b117c8f | 1108 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
fc914639 | 1109 | |
bb523fc0 PZ |
1110 | if (cpu_transcoder != TRANSCODER_EDP) |
1111 | I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), | |
1112 | TRANS_CLK_SEL_DISABLED); | |
fc914639 PZ |
1113 | } |
1114 | ||
00c09d70 | 1115 | static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) |
6441ab5f | 1116 | { |
c19b0669 | 1117 | struct drm_encoder *encoder = &intel_encoder->base; |
c19b0669 | 1118 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; |
30cf6db8 | 1119 | struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); |
6441ab5f | 1120 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
82a4d9c0 | 1121 | int type = intel_encoder->type; |
6441ab5f | 1122 | |
82a4d9c0 PZ |
1123 | if (type == INTEL_OUTPUT_EDP) { |
1124 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
4be73780 | 1125 | intel_edp_panel_on(intel_dp); |
82a4d9c0 | 1126 | } |
6441ab5f | 1127 | |
de7cfc63 DV |
1128 | WARN_ON(crtc->config.ddi_pll_sel == PORT_CLK_SEL_NONE); |
1129 | I915_WRITE(PORT_CLK_SEL(port), crtc->config.ddi_pll_sel); | |
c19b0669 | 1130 | |
82a4d9c0 | 1131 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { |
c19b0669 | 1132 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
30cf6db8 | 1133 | |
44905a27 | 1134 | intel_ddi_init_dp_buf_reg(intel_encoder); |
c19b0669 PZ |
1135 | |
1136 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); | |
1137 | intel_dp_start_link_train(intel_dp); | |
1138 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 ID |
1139 | if (port != PORT_A) |
1140 | intel_dp_stop_link_train(intel_dp); | |
30cf6db8 DV |
1141 | } else if (type == INTEL_OUTPUT_HDMI) { |
1142 | struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); | |
1143 | ||
1144 | intel_hdmi->set_infoframes(encoder, | |
1145 | crtc->config.has_hdmi_sink, | |
1146 | &crtc->config.adjusted_mode); | |
c19b0669 | 1147 | } |
6441ab5f PZ |
1148 | } |
1149 | ||
00c09d70 | 1150 | static void intel_ddi_post_disable(struct intel_encoder *intel_encoder) |
6441ab5f PZ |
1151 | { |
1152 | struct drm_encoder *encoder = &intel_encoder->base; | |
1153 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; | |
1154 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
82a4d9c0 | 1155 | int type = intel_encoder->type; |
2886e93f | 1156 | uint32_t val; |
a836bdf9 | 1157 | bool wait = false; |
2886e93f PZ |
1158 | |
1159 | val = I915_READ(DDI_BUF_CTL(port)); | |
1160 | if (val & DDI_BUF_CTL_ENABLE) { | |
1161 | val &= ~DDI_BUF_CTL_ENABLE; | |
1162 | I915_WRITE(DDI_BUF_CTL(port), val); | |
a836bdf9 | 1163 | wait = true; |
2886e93f | 1164 | } |
6441ab5f | 1165 | |
a836bdf9 PZ |
1166 | val = I915_READ(DP_TP_CTL(port)); |
1167 | val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
1168 | val |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
1169 | I915_WRITE(DP_TP_CTL(port), val); | |
1170 | ||
1171 | if (wait) | |
1172 | intel_wait_ddi_buf_idle(dev_priv, port); | |
1173 | ||
76bb80ed | 1174 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { |
82a4d9c0 | 1175 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
76bb80ed | 1176 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
24f3e092 | 1177 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 1178 | intel_edp_panel_off(intel_dp); |
82a4d9c0 PZ |
1179 | } |
1180 | ||
6441ab5f PZ |
1181 | I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE); |
1182 | } | |
1183 | ||
00c09d70 | 1184 | static void intel_enable_ddi(struct intel_encoder *intel_encoder) |
72662e10 | 1185 | { |
6547fef8 | 1186 | struct drm_encoder *encoder = &intel_encoder->base; |
7b9f35a6 WX |
1187 | struct drm_crtc *crtc = encoder->crtc; |
1188 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6547fef8 | 1189 | struct drm_device *dev = encoder->dev; |
72662e10 | 1190 | struct drm_i915_private *dev_priv = dev->dev_private; |
6547fef8 PZ |
1191 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
1192 | int type = intel_encoder->type; | |
72662e10 | 1193 | |
6547fef8 | 1194 | if (type == INTEL_OUTPUT_HDMI) { |
876a8cdf DL |
1195 | struct intel_digital_port *intel_dig_port = |
1196 | enc_to_dig_port(encoder); | |
1197 | ||
6547fef8 PZ |
1198 | /* In HDMI/DVI mode, the port width, and swing/emphasis values |
1199 | * are ignored so nothing special needs to be done besides | |
1200 | * enabling the port. | |
1201 | */ | |
876a8cdf | 1202 | I915_WRITE(DDI_BUF_CTL(port), |
bcf53de4 SM |
1203 | intel_dig_port->saved_port_bits | |
1204 | DDI_BUF_CTL_ENABLE); | |
d6c50ff8 PZ |
1205 | } else if (type == INTEL_OUTPUT_EDP) { |
1206 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
1207 | ||
3ab9c637 ID |
1208 | if (port == PORT_A) |
1209 | intel_dp_stop_link_train(intel_dp); | |
1210 | ||
4be73780 | 1211 | intel_edp_backlight_on(intel_dp); |
4906557e | 1212 | intel_edp_psr_enable(intel_dp); |
6547fef8 | 1213 | } |
7b9f35a6 | 1214 | |
9ed109a7 | 1215 | if (intel_crtc->config.has_audio) { |
d45a0bf5 | 1216 | intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO); |
69bfe1a9 | 1217 | intel_audio_codec_enable(intel_encoder); |
7b9f35a6 | 1218 | } |
5ab432ef DV |
1219 | } |
1220 | ||
00c09d70 | 1221 | static void intel_disable_ddi(struct intel_encoder *intel_encoder) |
5ab432ef | 1222 | { |
d6c50ff8 | 1223 | struct drm_encoder *encoder = &intel_encoder->base; |
7b9f35a6 WX |
1224 | struct drm_crtc *crtc = encoder->crtc; |
1225 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
d6c50ff8 | 1226 | int type = intel_encoder->type; |
7b9f35a6 WX |
1227 | struct drm_device *dev = encoder->dev; |
1228 | struct drm_i915_private *dev_priv = dev->dev_private; | |
d6c50ff8 | 1229 | |
d45a0bf5 | 1230 | if (intel_crtc->config.has_audio) { |
69bfe1a9 | 1231 | intel_audio_codec_disable(intel_encoder); |
d45a0bf5 PZ |
1232 | intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO); |
1233 | } | |
2831d842 | 1234 | |
d6c50ff8 PZ |
1235 | if (type == INTEL_OUTPUT_EDP) { |
1236 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
1237 | ||
4906557e | 1238 | intel_edp_psr_disable(intel_dp); |
4be73780 | 1239 | intel_edp_backlight_off(intel_dp); |
d6c50ff8 | 1240 | } |
72662e10 | 1241 | } |
79f689aa | 1242 | |
ad13d604 DL |
1243 | static int bdw_get_cdclk_freq(struct drm_i915_private *dev_priv) |
1244 | { | |
1245 | uint32_t lcpll = I915_READ(LCPLL_CTL); | |
1246 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; | |
1247 | ||
1248 | if (lcpll & LCPLL_CD_SOURCE_FCLK) | |
1249 | return 800000; | |
1250 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) | |
1251 | return 450000; | |
1252 | else if (freq == LCPLL_CLK_FREQ_450) | |
1253 | return 450000; | |
1254 | else if (freq == LCPLL_CLK_FREQ_54O_BDW) | |
1255 | return 540000; | |
1256 | else if (freq == LCPLL_CLK_FREQ_337_5_BDW) | |
1257 | return 337500; | |
1258 | else | |
1259 | return 675000; | |
1260 | } | |
1261 | ||
1262 | static int hsw_get_cdclk_freq(struct drm_i915_private *dev_priv) | |
79f689aa | 1263 | { |
e39bf98a | 1264 | struct drm_device *dev = dev_priv->dev; |
a4006641 | 1265 | uint32_t lcpll = I915_READ(LCPLL_CTL); |
e39bf98a | 1266 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; |
a4006641 | 1267 | |
ad13d604 | 1268 | if (lcpll & LCPLL_CD_SOURCE_FCLK) |
a4006641 | 1269 | return 800000; |
ad13d604 | 1270 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) |
b2b877ff | 1271 | return 450000; |
ad13d604 | 1272 | else if (freq == LCPLL_CLK_FREQ_450) |
b2b877ff | 1273 | return 450000; |
95626e7c | 1274 | else if (IS_HSW_ULT(dev)) |
ad13d604 DL |
1275 | return 337500; |
1276 | else | |
1277 | return 540000; | |
1278 | } | |
1279 | ||
1280 | int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv) | |
1281 | { | |
1282 | struct drm_device *dev = dev_priv->dev; | |
1283 | ||
1284 | if (IS_BROADWELL(dev)) | |
1285 | return bdw_get_cdclk_freq(dev_priv); | |
1286 | ||
1287 | /* Haswell */ | |
1288 | return hsw_get_cdclk_freq(dev_priv); | |
79f689aa PZ |
1289 | } |
1290 | ||
e0b01be4 DV |
1291 | static void hsw_ddi_pll_enable(struct drm_i915_private *dev_priv, |
1292 | struct intel_shared_dpll *pll) | |
1293 | { | |
e0b01be4 DV |
1294 | I915_WRITE(WRPLL_CTL(pll->id), pll->hw_state.wrpll); |
1295 | POSTING_READ(WRPLL_CTL(pll->id)); | |
1296 | udelay(20); | |
1297 | } | |
1298 | ||
12030431 DV |
1299 | static void hsw_ddi_pll_disable(struct drm_i915_private *dev_priv, |
1300 | struct intel_shared_dpll *pll) | |
1301 | { | |
1302 | uint32_t val; | |
1303 | ||
1304 | val = I915_READ(WRPLL_CTL(pll->id)); | |
12030431 DV |
1305 | I915_WRITE(WRPLL_CTL(pll->id), val & ~WRPLL_PLL_ENABLE); |
1306 | POSTING_READ(WRPLL_CTL(pll->id)); | |
1307 | } | |
1308 | ||
d452c5b6 DV |
1309 | static bool hsw_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv, |
1310 | struct intel_shared_dpll *pll, | |
1311 | struct intel_dpll_hw_state *hw_state) | |
1312 | { | |
1313 | uint32_t val; | |
1314 | ||
f458ebbc | 1315 | if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS)) |
d452c5b6 DV |
1316 | return false; |
1317 | ||
1318 | val = I915_READ(WRPLL_CTL(pll->id)); | |
1319 | hw_state->wrpll = val; | |
1320 | ||
1321 | return val & WRPLL_PLL_ENABLE; | |
1322 | } | |
1323 | ||
ca1381b5 | 1324 | static const char * const hsw_ddi_pll_names[] = { |
9cd86933 DV |
1325 | "WRPLL 1", |
1326 | "WRPLL 2", | |
1327 | }; | |
1328 | ||
143b307c | 1329 | static void hsw_shared_dplls_init(struct drm_i915_private *dev_priv) |
79f689aa | 1330 | { |
9cd86933 DV |
1331 | int i; |
1332 | ||
716c2e55 | 1333 | dev_priv->num_shared_dpll = 2; |
9cd86933 | 1334 | |
716c2e55 | 1335 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { |
9cd86933 DV |
1336 | dev_priv->shared_dplls[i].id = i; |
1337 | dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i]; | |
12030431 | 1338 | dev_priv->shared_dplls[i].disable = hsw_ddi_pll_disable; |
e0b01be4 | 1339 | dev_priv->shared_dplls[i].enable = hsw_ddi_pll_enable; |
d452c5b6 DV |
1340 | dev_priv->shared_dplls[i].get_hw_state = |
1341 | hsw_ddi_pll_get_hw_state; | |
9cd86933 | 1342 | } |
143b307c DL |
1343 | } |
1344 | ||
1345 | void intel_ddi_pll_init(struct drm_device *dev) | |
1346 | { | |
1347 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1348 | uint32_t val = I915_READ(LCPLL_CTL); | |
1349 | ||
1350 | hsw_shared_dplls_init(dev_priv); | |
79f689aa PZ |
1351 | |
1352 | /* The LCPLL register should be turned on by the BIOS. For now let's | |
1353 | * just check its state and print errors in case something is wrong. | |
1354 | * Don't even try to turn it on. | |
1355 | */ | |
1356 | ||
b2b877ff | 1357 | DRM_DEBUG_KMS("CDCLK running at %dKHz\n", |
79f689aa PZ |
1358 | intel_ddi_get_cdclk_freq(dev_priv)); |
1359 | ||
1360 | if (val & LCPLL_CD_SOURCE_FCLK) | |
1361 | DRM_ERROR("CDCLK source is not LCPLL\n"); | |
1362 | ||
1363 | if (val & LCPLL_PLL_DISABLE) | |
1364 | DRM_ERROR("LCPLL is disabled\n"); | |
1365 | } | |
c19b0669 PZ |
1366 | |
1367 | void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder) | |
1368 | { | |
174edf1f PZ |
1369 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
1370 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
c19b0669 | 1371 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; |
174edf1f | 1372 | enum port port = intel_dig_port->port; |
c19b0669 | 1373 | uint32_t val; |
f3e227df | 1374 | bool wait = false; |
c19b0669 PZ |
1375 | |
1376 | if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) { | |
1377 | val = I915_READ(DDI_BUF_CTL(port)); | |
1378 | if (val & DDI_BUF_CTL_ENABLE) { | |
1379 | val &= ~DDI_BUF_CTL_ENABLE; | |
1380 | I915_WRITE(DDI_BUF_CTL(port), val); | |
1381 | wait = true; | |
1382 | } | |
1383 | ||
1384 | val = I915_READ(DP_TP_CTL(port)); | |
1385 | val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
1386 | val |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
1387 | I915_WRITE(DP_TP_CTL(port), val); | |
1388 | POSTING_READ(DP_TP_CTL(port)); | |
1389 | ||
1390 | if (wait) | |
1391 | intel_wait_ddi_buf_idle(dev_priv, port); | |
1392 | } | |
1393 | ||
0e32b39c | 1394 | val = DP_TP_CTL_ENABLE | |
c19b0669 | 1395 | DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE; |
0e32b39c DA |
1396 | if (intel_dp->is_mst) |
1397 | val |= DP_TP_CTL_MODE_MST; | |
1398 | else { | |
1399 | val |= DP_TP_CTL_MODE_SST; | |
1400 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1401 | val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; | |
1402 | } | |
c19b0669 PZ |
1403 | I915_WRITE(DP_TP_CTL(port), val); |
1404 | POSTING_READ(DP_TP_CTL(port)); | |
1405 | ||
1406 | intel_dp->DP |= DDI_BUF_CTL_ENABLE; | |
1407 | I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP); | |
1408 | POSTING_READ(DDI_BUF_CTL(port)); | |
1409 | ||
1410 | udelay(600); | |
1411 | } | |
00c09d70 | 1412 | |
1ad960f2 PZ |
1413 | void intel_ddi_fdi_disable(struct drm_crtc *crtc) |
1414 | { | |
1415 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
1416 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
1417 | uint32_t val; | |
1418 | ||
1419 | intel_ddi_post_disable(intel_encoder); | |
1420 | ||
1421 | val = I915_READ(_FDI_RXA_CTL); | |
1422 | val &= ~FDI_RX_ENABLE; | |
1423 | I915_WRITE(_FDI_RXA_CTL, val); | |
1424 | ||
1425 | val = I915_READ(_FDI_RXA_MISC); | |
1426 | val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
1427 | val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); | |
1428 | I915_WRITE(_FDI_RXA_MISC, val); | |
1429 | ||
1430 | val = I915_READ(_FDI_RXA_CTL); | |
1431 | val &= ~FDI_PCDCLK; | |
1432 | I915_WRITE(_FDI_RXA_CTL, val); | |
1433 | ||
1434 | val = I915_READ(_FDI_RXA_CTL); | |
1435 | val &= ~FDI_RX_PLL_ENABLE; | |
1436 | I915_WRITE(_FDI_RXA_CTL, val); | |
1437 | } | |
1438 | ||
00c09d70 PZ |
1439 | static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder) |
1440 | { | |
0e32b39c DA |
1441 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(&intel_encoder->base); |
1442 | int type = intel_dig_port->base.type; | |
1443 | ||
1444 | if (type != INTEL_OUTPUT_DISPLAYPORT && | |
1445 | type != INTEL_OUTPUT_EDP && | |
1446 | type != INTEL_OUTPUT_UNKNOWN) { | |
1447 | return; | |
1448 | } | |
00c09d70 | 1449 | |
0e32b39c | 1450 | intel_dp_hot_plug(intel_encoder); |
00c09d70 PZ |
1451 | } |
1452 | ||
6801c18c VS |
1453 | void intel_ddi_get_config(struct intel_encoder *encoder, |
1454 | struct intel_crtc_config *pipe_config) | |
045ac3b5 JB |
1455 | { |
1456 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
1457 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
1458 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; | |
1459 | u32 temp, flags = 0; | |
1460 | ||
1461 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
1462 | if (temp & TRANS_DDI_PHSYNC) | |
1463 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1464 | else | |
1465 | flags |= DRM_MODE_FLAG_NHSYNC; | |
1466 | if (temp & TRANS_DDI_PVSYNC) | |
1467 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1468 | else | |
1469 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1470 | ||
1471 | pipe_config->adjusted_mode.flags |= flags; | |
42571aef VS |
1472 | |
1473 | switch (temp & TRANS_DDI_BPC_MASK) { | |
1474 | case TRANS_DDI_BPC_6: | |
1475 | pipe_config->pipe_bpp = 18; | |
1476 | break; | |
1477 | case TRANS_DDI_BPC_8: | |
1478 | pipe_config->pipe_bpp = 24; | |
1479 | break; | |
1480 | case TRANS_DDI_BPC_10: | |
1481 | pipe_config->pipe_bpp = 30; | |
1482 | break; | |
1483 | case TRANS_DDI_BPC_12: | |
1484 | pipe_config->pipe_bpp = 36; | |
1485 | break; | |
1486 | default: | |
1487 | break; | |
1488 | } | |
eb14cb74 VS |
1489 | |
1490 | switch (temp & TRANS_DDI_MODE_SELECT_MASK) { | |
1491 | case TRANS_DDI_MODE_SELECT_HDMI: | |
6897b4b5 | 1492 | pipe_config->has_hdmi_sink = true; |
eb14cb74 VS |
1493 | case TRANS_DDI_MODE_SELECT_DVI: |
1494 | case TRANS_DDI_MODE_SELECT_FDI: | |
1495 | break; | |
1496 | case TRANS_DDI_MODE_SELECT_DP_SST: | |
1497 | case TRANS_DDI_MODE_SELECT_DP_MST: | |
1498 | pipe_config->has_dp_encoder = true; | |
1499 | intel_dp_get_m_n(intel_crtc, pipe_config); | |
1500 | break; | |
1501 | default: | |
1502 | break; | |
1503 | } | |
10214420 | 1504 | |
f458ebbc | 1505 | if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) { |
a60551b1 PZ |
1506 | temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); |
1507 | if (temp & (AUDIO_OUTPUT_ENABLE_A << (intel_crtc->pipe * 4))) | |
1508 | pipe_config->has_audio = true; | |
1509 | } | |
9ed109a7 | 1510 | |
10214420 DV |
1511 | if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp_bpp && |
1512 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1513 | /* | |
1514 | * This is a big fat ugly hack. | |
1515 | * | |
1516 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1517 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1518 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1519 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1520 | * max, not what it tells us to use. | |
1521 | * | |
1522 | * Note: This will still be broken if the eDP panel is not lit | |
1523 | * up by the BIOS, and thus we can't get the mode at module | |
1524 | * load. | |
1525 | */ | |
1526 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1527 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1528 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1529 | } | |
11578553 | 1530 | |
3d51278a | 1531 | hsw_ddi_clock_get(encoder, pipe_config); |
045ac3b5 JB |
1532 | } |
1533 | ||
00c09d70 PZ |
1534 | static void intel_ddi_destroy(struct drm_encoder *encoder) |
1535 | { | |
1536 | /* HDMI has nothing special to destroy, so we can go with this. */ | |
1537 | intel_dp_encoder_destroy(encoder); | |
1538 | } | |
1539 | ||
5bfe2ac0 DV |
1540 | static bool intel_ddi_compute_config(struct intel_encoder *encoder, |
1541 | struct intel_crtc_config *pipe_config) | |
00c09d70 | 1542 | { |
5bfe2ac0 | 1543 | int type = encoder->type; |
eccb140b | 1544 | int port = intel_ddi_get_encoder_port(encoder); |
00c09d70 | 1545 | |
5bfe2ac0 | 1546 | WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n"); |
00c09d70 | 1547 | |
eccb140b DV |
1548 | if (port == PORT_A) |
1549 | pipe_config->cpu_transcoder = TRANSCODER_EDP; | |
1550 | ||
00c09d70 | 1551 | if (type == INTEL_OUTPUT_HDMI) |
5bfe2ac0 | 1552 | return intel_hdmi_compute_config(encoder, pipe_config); |
00c09d70 | 1553 | else |
5bfe2ac0 | 1554 | return intel_dp_compute_config(encoder, pipe_config); |
00c09d70 PZ |
1555 | } |
1556 | ||
1557 | static const struct drm_encoder_funcs intel_ddi_funcs = { | |
1558 | .destroy = intel_ddi_destroy, | |
1559 | }; | |
1560 | ||
4a28ae58 PZ |
1561 | static struct intel_connector * |
1562 | intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port) | |
1563 | { | |
1564 | struct intel_connector *connector; | |
1565 | enum port port = intel_dig_port->port; | |
1566 | ||
1567 | connector = kzalloc(sizeof(*connector), GFP_KERNEL); | |
1568 | if (!connector) | |
1569 | return NULL; | |
1570 | ||
1571 | intel_dig_port->dp.output_reg = DDI_BUF_CTL(port); | |
1572 | if (!intel_dp_init_connector(intel_dig_port, connector)) { | |
1573 | kfree(connector); | |
1574 | return NULL; | |
1575 | } | |
1576 | ||
1577 | return connector; | |
1578 | } | |
1579 | ||
1580 | static struct intel_connector * | |
1581 | intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port) | |
1582 | { | |
1583 | struct intel_connector *connector; | |
1584 | enum port port = intel_dig_port->port; | |
1585 | ||
1586 | connector = kzalloc(sizeof(*connector), GFP_KERNEL); | |
1587 | if (!connector) | |
1588 | return NULL; | |
1589 | ||
1590 | intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port); | |
1591 | intel_hdmi_init_connector(intel_dig_port, connector); | |
1592 | ||
1593 | return connector; | |
1594 | } | |
1595 | ||
00c09d70 PZ |
1596 | void intel_ddi_init(struct drm_device *dev, enum port port) |
1597 | { | |
876a8cdf | 1598 | struct drm_i915_private *dev_priv = dev->dev_private; |
00c09d70 PZ |
1599 | struct intel_digital_port *intel_dig_port; |
1600 | struct intel_encoder *intel_encoder; | |
1601 | struct drm_encoder *encoder; | |
311a2094 PZ |
1602 | bool init_hdmi, init_dp; |
1603 | ||
1604 | init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi || | |
1605 | dev_priv->vbt.ddi_port_info[port].supports_hdmi); | |
1606 | init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp; | |
1607 | if (!init_dp && !init_hdmi) { | |
f68d697e | 1608 | DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, assuming it is\n", |
311a2094 PZ |
1609 | port_name(port)); |
1610 | init_hdmi = true; | |
1611 | init_dp = true; | |
1612 | } | |
00c09d70 | 1613 | |
b14c5679 | 1614 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
00c09d70 PZ |
1615 | if (!intel_dig_port) |
1616 | return; | |
1617 | ||
00c09d70 PZ |
1618 | intel_encoder = &intel_dig_port->base; |
1619 | encoder = &intel_encoder->base; | |
1620 | ||
1621 | drm_encoder_init(dev, encoder, &intel_ddi_funcs, | |
1622 | DRM_MODE_ENCODER_TMDS); | |
00c09d70 | 1623 | |
5bfe2ac0 | 1624 | intel_encoder->compute_config = intel_ddi_compute_config; |
00c09d70 PZ |
1625 | intel_encoder->enable = intel_enable_ddi; |
1626 | intel_encoder->pre_enable = intel_ddi_pre_enable; | |
1627 | intel_encoder->disable = intel_disable_ddi; | |
1628 | intel_encoder->post_disable = intel_ddi_post_disable; | |
1629 | intel_encoder->get_hw_state = intel_ddi_get_hw_state; | |
045ac3b5 | 1630 | intel_encoder->get_config = intel_ddi_get_config; |
00c09d70 PZ |
1631 | |
1632 | intel_dig_port->port = port; | |
bcf53de4 SM |
1633 | intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & |
1634 | (DDI_BUF_PORT_REVERSAL | | |
1635 | DDI_A_4_LANES); | |
00c09d70 PZ |
1636 | |
1637 | intel_encoder->type = INTEL_OUTPUT_UNKNOWN; | |
f68d697e | 1638 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
bc079e8b | 1639 | intel_encoder->cloneable = 0; |
00c09d70 PZ |
1640 | intel_encoder->hot_plug = intel_ddi_hot_plug; |
1641 | ||
f68d697e CW |
1642 | if (init_dp) { |
1643 | if (!intel_ddi_init_dp_connector(intel_dig_port)) | |
1644 | goto err; | |
13cf5504 | 1645 | |
f68d697e CW |
1646 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
1647 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
1648 | } | |
21a8e6a4 | 1649 | |
311a2094 PZ |
1650 | /* In theory we don't need the encoder->type check, but leave it just in |
1651 | * case we have some really bad VBTs... */ | |
f68d697e CW |
1652 | if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) { |
1653 | if (!intel_ddi_init_hdmi_connector(intel_dig_port)) | |
1654 | goto err; | |
21a8e6a4 | 1655 | } |
f68d697e CW |
1656 | |
1657 | return; | |
1658 | ||
1659 | err: | |
1660 | drm_encoder_cleanup(encoder); | |
1661 | kfree(intel_dig_port); | |
00c09d70 | 1662 | } |