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4e646495 JN |
1 | /* |
2 | * Copyright © 2013 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 | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Author: Jani Nikula <jani.nikula@intel.com> | |
24 | */ | |
25 | ||
26 | #include <drm/drmP.h> | |
27 | #include <drm/drm_crtc.h> | |
28 | #include <drm/drm_edid.h> | |
29 | #include <drm/i915_drm.h> | |
30 | #include <linux/slab.h> | |
31 | #include "i915_drv.h" | |
32 | #include "intel_drv.h" | |
33 | #include "intel_dsi.h" | |
34 | #include "intel_dsi_cmd.h" | |
35 | ||
36 | /* the sub-encoders aka panel drivers */ | |
37 | static const struct intel_dsi_device intel_dsi_devices[] = { | |
38 | }; | |
39 | ||
e9fe51c6 | 40 | static void band_gap_reset(struct drm_i915_private *dev_priv) |
4ce8c9a7 SK |
41 | { |
42 | mutex_lock(&dev_priv->dpio_lock); | |
43 | ||
e9fe51c6 SK |
44 | vlv_flisdsi_write(dev_priv, 0x08, 0x0001); |
45 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0005); | |
46 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0025); | |
47 | udelay(150); | |
48 | vlv_flisdsi_write(dev_priv, 0x0F, 0x0000); | |
49 | vlv_flisdsi_write(dev_priv, 0x08, 0x0000); | |
4ce8c9a7 SK |
50 | |
51 | mutex_unlock(&dev_priv->dpio_lock); | |
4ce8c9a7 SK |
52 | } |
53 | ||
4e646495 JN |
54 | static struct intel_dsi *intel_attached_dsi(struct drm_connector *connector) |
55 | { | |
56 | return container_of(intel_attached_encoder(connector), | |
57 | struct intel_dsi, base); | |
58 | } | |
59 | ||
60 | static inline bool is_vid_mode(struct intel_dsi *intel_dsi) | |
61 | { | |
dfba2e2d | 62 | return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE; |
4e646495 JN |
63 | } |
64 | ||
65 | static inline bool is_cmd_mode(struct intel_dsi *intel_dsi) | |
66 | { | |
dfba2e2d | 67 | return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE; |
4e646495 JN |
68 | } |
69 | ||
70 | static void intel_dsi_hot_plug(struct intel_encoder *encoder) | |
71 | { | |
72 | DRM_DEBUG_KMS("\n"); | |
73 | } | |
74 | ||
75 | static bool intel_dsi_compute_config(struct intel_encoder *encoder, | |
76 | struct intel_crtc_config *config) | |
77 | { | |
78 | struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi, | |
79 | base); | |
80 | struct intel_connector *intel_connector = intel_dsi->attached_connector; | |
81 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
82 | struct drm_display_mode *adjusted_mode = &config->adjusted_mode; | |
83 | struct drm_display_mode *mode = &config->requested_mode; | |
84 | ||
85 | DRM_DEBUG_KMS("\n"); | |
86 | ||
87 | if (fixed_mode) | |
88 | intel_fixed_panel_mode(fixed_mode, adjusted_mode); | |
89 | ||
90 | if (intel_dsi->dev.dev_ops->mode_fixup) | |
91 | return intel_dsi->dev.dev_ops->mode_fixup(&intel_dsi->dev, | |
92 | mode, adjusted_mode); | |
93 | ||
94 | return true; | |
95 | } | |
96 | ||
97 | static void intel_dsi_pre_pll_enable(struct intel_encoder *encoder) | |
98 | { | |
99 | DRM_DEBUG_KMS("\n"); | |
be4fc046 | 100 | |
101 | vlv_enable_dsi_pll(encoder); | |
4e646495 JN |
102 | } |
103 | ||
1dbd7cb2 | 104 | static void intel_dsi_device_ready(struct intel_encoder *encoder) |
4e646495 | 105 | { |
1dbd7cb2 SK |
106 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
107 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
108 | int pipe = intel_crtc->pipe; | |
109 | u32 val; | |
110 | ||
4e646495 | 111 | DRM_DEBUG_KMS("\n"); |
4e646495 | 112 | |
2095f9fc SK |
113 | mutex_lock(&dev_priv->dpio_lock); |
114 | /* program rcomp for compliance, reduce from 50 ohms to 45 ohms | |
115 | * needed everytime after power gate */ | |
116 | vlv_flisdsi_write(dev_priv, 0x04, 0x0004); | |
117 | mutex_unlock(&dev_priv->dpio_lock); | |
118 | ||
119 | /* bandgap reset is needed after everytime we do power gate */ | |
120 | band_gap_reset(dev_priv); | |
121 | ||
1dbd7cb2 SK |
122 | val = I915_READ(MIPI_PORT_CTRL(pipe)); |
123 | I915_WRITE(MIPI_PORT_CTRL(pipe), val | LP_OUTPUT_HOLD); | |
124 | usleep_range(1000, 1500); | |
125 | I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY | ULPS_STATE_EXIT); | |
126 | usleep_range(2000, 2500); | |
127 | I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY); | |
128 | usleep_range(2000, 2500); | |
129 | I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00); | |
130 | usleep_range(2000, 2500); | |
131 | I915_WRITE(MIPI_DEVICE_READY(pipe), DEVICE_READY); | |
132 | usleep_range(2000, 2500); | |
133 | } | |
1dbd7cb2 SK |
134 | |
135 | static void intel_dsi_enable(struct intel_encoder *encoder) | |
136 | { | |
137 | struct drm_device *dev = encoder->base.dev; | |
138 | struct drm_i915_private *dev_priv = dev->dev_private; | |
139 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
140 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); | |
141 | int pipe = intel_crtc->pipe; | |
142 | u32 temp; | |
143 | ||
144 | DRM_DEBUG_KMS("\n"); | |
b9f5e07d | 145 | |
4e646495 JN |
146 | if (is_cmd_mode(intel_dsi)) |
147 | I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(pipe), 8 * 4); | |
1dbd7cb2 | 148 | else { |
4e646495 | 149 | msleep(20); /* XXX */ |
e1047028 | 150 | dpi_send_cmd(intel_dsi, TURN_ON, DPI_LP_MODE_EN); |
4e646495 JN |
151 | msleep(100); |
152 | ||
2634fd7f SK |
153 | if (intel_dsi->dev.dev_ops->enable) |
154 | intel_dsi->dev.dev_ops->enable(&intel_dsi->dev); | |
155 | ||
4e646495 | 156 | /* assert ip_tg_enable signal */ |
f6da2842 SK |
157 | temp = I915_READ(MIPI_PORT_CTRL(pipe)) & ~LANE_CONFIGURATION_MASK; |
158 | temp = temp | intel_dsi->port_bits; | |
4e646495 JN |
159 | I915_WRITE(MIPI_PORT_CTRL(pipe), temp | DPI_ENABLE); |
160 | POSTING_READ(MIPI_PORT_CTRL(pipe)); | |
161 | } | |
2634fd7f SK |
162 | } |
163 | ||
164 | static void intel_dsi_pre_enable(struct intel_encoder *encoder) | |
165 | { | |
20e5bf66 SK |
166 | struct drm_device *dev = encoder->base.dev; |
167 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2634fd7f | 168 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
20e5bf66 SK |
169 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
170 | enum pipe pipe = intel_crtc->pipe; | |
171 | u32 tmp; | |
2634fd7f SK |
172 | |
173 | DRM_DEBUG_KMS("\n"); | |
174 | ||
20e5bf66 SK |
175 | /* Disable DPOunit clock gating, can stall pipe |
176 | * and we need DPLL REFA always enabled */ | |
177 | tmp = I915_READ(DPLL(pipe)); | |
178 | tmp |= DPLL_REFA_CLK_ENABLE_VLV; | |
179 | I915_WRITE(DPLL(pipe), tmp); | |
180 | ||
181 | tmp = I915_READ(DSPCLK_GATE_D); | |
182 | tmp |= DPOUNIT_CLOCK_GATE_DISABLE; | |
183 | I915_WRITE(DSPCLK_GATE_D, tmp); | |
2634fd7f SK |
184 | |
185 | /* put device in ready state */ | |
186 | intel_dsi_device_ready(encoder); | |
4e646495 | 187 | |
20e5bf66 SK |
188 | if (intel_dsi->dev.dev_ops->panel_reset) |
189 | intel_dsi->dev.dev_ops->panel_reset(&intel_dsi->dev); | |
190 | ||
2634fd7f SK |
191 | if (intel_dsi->dev.dev_ops->send_otp_cmds) |
192 | intel_dsi->dev.dev_ops->send_otp_cmds(&intel_dsi->dev); | |
193 | ||
194 | /* Enable port in pre-enable phase itself because as per hw team | |
195 | * recommendation, port should be enabled befor plane & pipe */ | |
196 | intel_dsi_enable(encoder); | |
197 | } | |
198 | ||
199 | static void intel_dsi_enable_nop(struct intel_encoder *encoder) | |
200 | { | |
201 | DRM_DEBUG_KMS("\n"); | |
202 | ||
203 | /* for DSI port enable has to be done before pipe | |
204 | * and plane enable, so port enable is done in | |
205 | * pre_enable phase itself unlike other encoders | |
206 | */ | |
4e646495 JN |
207 | } |
208 | ||
209 | static void intel_dsi_disable(struct intel_encoder *encoder) | |
210 | { | |
1dbd7cb2 SK |
211 | struct drm_device *dev = encoder->base.dev; |
212 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4e646495 JN |
213 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
214 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); | |
215 | int pipe = intel_crtc->pipe; | |
216 | u32 temp; | |
217 | ||
218 | DRM_DEBUG_KMS("\n"); | |
219 | ||
4e646495 | 220 | if (is_vid_mode(intel_dsi)) { |
e1047028 SK |
221 | /* Send Shutdown command to the panel in LP mode */ |
222 | dpi_send_cmd(intel_dsi, SHUTDOWN, DPI_LP_MODE_EN); | |
4e646495 JN |
223 | msleep(10); |
224 | ||
225 | /* de-assert ip_tg_enable signal */ | |
226 | temp = I915_READ(MIPI_PORT_CTRL(pipe)); | |
227 | I915_WRITE(MIPI_PORT_CTRL(pipe), temp & ~DPI_ENABLE); | |
228 | POSTING_READ(MIPI_PORT_CTRL(pipe)); | |
229 | ||
230 | msleep(2); | |
231 | } | |
232 | ||
339023ec SK |
233 | /* Panel commands can be sent when clock is in LP11 */ |
234 | I915_WRITE(MIPI_DEVICE_READY(pipe), 0x0); | |
235 | ||
236 | temp = I915_READ(MIPI_CTRL(pipe)); | |
237 | temp &= ~ESCAPE_CLOCK_DIVIDER_MASK; | |
238 | I915_WRITE(MIPI_CTRL(pipe), temp | | |
239 | intel_dsi->escape_clk_div << | |
240 | ESCAPE_CLOCK_DIVIDER_SHIFT); | |
241 | ||
242 | I915_WRITE(MIPI_EOT_DISABLE(pipe), CLOCKSTOP); | |
243 | ||
244 | temp = I915_READ(MIPI_DSI_FUNC_PRG(pipe)); | |
245 | temp &= ~VID_MODE_FORMAT_MASK; | |
246 | I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), temp); | |
247 | ||
248 | I915_WRITE(MIPI_DEVICE_READY(pipe), 0x1); | |
249 | ||
1dbd7cb2 SK |
250 | /* if disable packets are sent before sending shutdown packet then in |
251 | * some next enable sequence send turn on packet error is observed */ | |
252 | if (intel_dsi->dev.dev_ops->disable) | |
253 | intel_dsi->dev.dev_ops->disable(&intel_dsi->dev); | |
4e646495 JN |
254 | } |
255 | ||
1dbd7cb2 | 256 | static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) |
4e646495 | 257 | { |
1dbd7cb2 SK |
258 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
259 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
260 | int pipe = intel_crtc->pipe; | |
261 | u32 val; | |
262 | ||
4e646495 | 263 | DRM_DEBUG_KMS("\n"); |
be4fc046 | 264 | |
1dbd7cb2 SK |
265 | I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER); |
266 | usleep_range(2000, 2500); | |
267 | ||
268 | I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_EXIT); | |
269 | usleep_range(2000, 2500); | |
270 | ||
271 | I915_WRITE(MIPI_DEVICE_READY(pipe), ULPS_STATE_ENTER); | |
272 | usleep_range(2000, 2500); | |
273 | ||
274 | val = I915_READ(MIPI_PORT_CTRL(pipe)); | |
275 | I915_WRITE(MIPI_PORT_CTRL(pipe), val & ~LP_OUTPUT_HOLD); | |
276 | usleep_range(1000, 1500); | |
277 | ||
278 | if (wait_for(((I915_READ(MIPI_PORT_CTRL(pipe)) & AFE_LATCHOUT) | |
279 | == 0x00000), 30)) | |
280 | DRM_ERROR("DSI LP not going Low\n"); | |
281 | ||
282 | I915_WRITE(MIPI_DEVICE_READY(pipe), 0x00); | |
283 | usleep_range(2000, 2500); | |
284 | ||
be4fc046 | 285 | vlv_disable_dsi_pll(encoder); |
4e646495 | 286 | } |
20e5bf66 | 287 | |
1dbd7cb2 SK |
288 | static void intel_dsi_post_disable(struct intel_encoder *encoder) |
289 | { | |
20e5bf66 | 290 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; |
1dbd7cb2 | 291 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); |
20e5bf66 | 292 | u32 val; |
1dbd7cb2 SK |
293 | |
294 | DRM_DEBUG_KMS("\n"); | |
295 | ||
296 | intel_dsi_clear_device_ready(encoder); | |
297 | ||
20e5bf66 SK |
298 | val = I915_READ(DSPCLK_GATE_D); |
299 | val &= ~DPOUNIT_CLOCK_GATE_DISABLE; | |
300 | I915_WRITE(DSPCLK_GATE_D, val); | |
301 | ||
1dbd7cb2 SK |
302 | if (intel_dsi->dev.dev_ops->disable_panel_power) |
303 | intel_dsi->dev.dev_ops->disable_panel_power(&intel_dsi->dev); | |
304 | } | |
4e646495 JN |
305 | |
306 | static bool intel_dsi_get_hw_state(struct intel_encoder *encoder, | |
307 | enum pipe *pipe) | |
308 | { | |
309 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
6d129bea | 310 | enum intel_display_power_domain power_domain; |
4e646495 JN |
311 | u32 port, func; |
312 | enum pipe p; | |
313 | ||
314 | DRM_DEBUG_KMS("\n"); | |
315 | ||
6d129bea ID |
316 | power_domain = intel_display_port_power_domain(encoder); |
317 | if (!intel_display_power_enabled(dev_priv, power_domain)) | |
318 | return false; | |
319 | ||
4e646495 JN |
320 | /* XXX: this only works for one DSI output */ |
321 | for (p = PIPE_A; p <= PIPE_B; p++) { | |
322 | port = I915_READ(MIPI_PORT_CTRL(p)); | |
323 | func = I915_READ(MIPI_DSI_FUNC_PRG(p)); | |
324 | ||
325 | if ((port & DPI_ENABLE) || (func & CMD_MODE_DATA_WIDTH_MASK)) { | |
326 | if (I915_READ(MIPI_DEVICE_READY(p)) & DEVICE_READY) { | |
327 | *pipe = p; | |
328 | return true; | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | return false; | |
334 | } | |
335 | ||
336 | static void intel_dsi_get_config(struct intel_encoder *encoder, | |
337 | struct intel_crtc_config *pipe_config) | |
338 | { | |
339 | DRM_DEBUG_KMS("\n"); | |
340 | ||
341 | /* XXX: read flags, set to adjusted_mode */ | |
342 | } | |
343 | ||
c19de8eb DL |
344 | static enum drm_mode_status |
345 | intel_dsi_mode_valid(struct drm_connector *connector, | |
346 | struct drm_display_mode *mode) | |
4e646495 JN |
347 | { |
348 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
349 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
350 | struct intel_dsi *intel_dsi = intel_attached_dsi(connector); | |
351 | ||
352 | DRM_DEBUG_KMS("\n"); | |
353 | ||
354 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) { | |
355 | DRM_DEBUG_KMS("MODE_NO_DBLESCAN\n"); | |
356 | return MODE_NO_DBLESCAN; | |
357 | } | |
358 | ||
359 | if (fixed_mode) { | |
360 | if (mode->hdisplay > fixed_mode->hdisplay) | |
361 | return MODE_PANEL; | |
362 | if (mode->vdisplay > fixed_mode->vdisplay) | |
363 | return MODE_PANEL; | |
364 | } | |
365 | ||
366 | return intel_dsi->dev.dev_ops->mode_valid(&intel_dsi->dev, mode); | |
367 | } | |
368 | ||
369 | /* return txclkesc cycles in terms of divider and duration in us */ | |
370 | static u16 txclkesc(u32 divider, unsigned int us) | |
371 | { | |
372 | switch (divider) { | |
373 | case ESCAPE_CLOCK_DIVIDER_1: | |
374 | default: | |
375 | return 20 * us; | |
376 | case ESCAPE_CLOCK_DIVIDER_2: | |
377 | return 10 * us; | |
378 | case ESCAPE_CLOCK_DIVIDER_4: | |
379 | return 5 * us; | |
380 | } | |
381 | } | |
382 | ||
383 | /* return pixels in terms of txbyteclkhs */ | |
384 | static u16 txbyteclkhs(u16 pixels, int bpp, int lane_count) | |
385 | { | |
386 | return DIV_ROUND_UP(DIV_ROUND_UP(pixels * bpp, 8), lane_count); | |
387 | } | |
388 | ||
389 | static void set_dsi_timings(struct drm_encoder *encoder, | |
390 | const struct drm_display_mode *mode) | |
391 | { | |
392 | struct drm_device *dev = encoder->dev; | |
393 | struct drm_i915_private *dev_priv = dev->dev_private; | |
394 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
395 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | |
396 | int pipe = intel_crtc->pipe; | |
397 | unsigned int bpp = intel_crtc->config.pipe_bpp; | |
398 | unsigned int lane_count = intel_dsi->lane_count; | |
399 | ||
400 | u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp; | |
401 | ||
402 | hactive = mode->hdisplay; | |
403 | hfp = mode->hsync_start - mode->hdisplay; | |
404 | hsync = mode->hsync_end - mode->hsync_start; | |
405 | hbp = mode->htotal - mode->hsync_end; | |
406 | ||
407 | vfp = mode->vsync_start - mode->vdisplay; | |
408 | vsync = mode->vsync_end - mode->vsync_start; | |
409 | vbp = mode->vtotal - mode->vsync_end; | |
410 | ||
411 | /* horizontal values are in terms of high speed byte clock */ | |
412 | hactive = txbyteclkhs(hactive, bpp, lane_count); | |
413 | hfp = txbyteclkhs(hfp, bpp, lane_count); | |
414 | hsync = txbyteclkhs(hsync, bpp, lane_count); | |
415 | hbp = txbyteclkhs(hbp, bpp, lane_count); | |
416 | ||
417 | I915_WRITE(MIPI_HACTIVE_AREA_COUNT(pipe), hactive); | |
418 | I915_WRITE(MIPI_HFP_COUNT(pipe), hfp); | |
419 | ||
420 | /* meaningful for video mode non-burst sync pulse mode only, can be zero | |
421 | * for non-burst sync events and burst modes */ | |
422 | I915_WRITE(MIPI_HSYNC_PADDING_COUNT(pipe), hsync); | |
423 | I915_WRITE(MIPI_HBP_COUNT(pipe), hbp); | |
424 | ||
425 | /* vertical values are in terms of lines */ | |
426 | I915_WRITE(MIPI_VFP_COUNT(pipe), vfp); | |
427 | I915_WRITE(MIPI_VSYNC_PADDING_COUNT(pipe), vsync); | |
428 | I915_WRITE(MIPI_VBP_COUNT(pipe), vbp); | |
429 | } | |
430 | ||
431 | static void intel_dsi_mode_set(struct intel_encoder *intel_encoder) | |
432 | { | |
433 | struct drm_encoder *encoder = &intel_encoder->base; | |
434 | struct drm_device *dev = encoder->dev; | |
435 | struct drm_i915_private *dev_priv = dev->dev_private; | |
436 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
437 | struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); | |
438 | struct drm_display_mode *adjusted_mode = | |
439 | &intel_crtc->config.adjusted_mode; | |
440 | int pipe = intel_crtc->pipe; | |
441 | unsigned int bpp = intel_crtc->config.pipe_bpp; | |
442 | u32 val, tmp; | |
443 | ||
6f2bcceb | 444 | DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe)); |
4e646495 JN |
445 | |
446 | /* escape clock divider, 20MHz, shared for A and C. device ready must be | |
447 | * off when doing this! txclkesc? */ | |
448 | tmp = I915_READ(MIPI_CTRL(0)); | |
449 | tmp &= ~ESCAPE_CLOCK_DIVIDER_MASK; | |
450 | I915_WRITE(MIPI_CTRL(0), tmp | ESCAPE_CLOCK_DIVIDER_1); | |
451 | ||
452 | /* read request priority is per pipe */ | |
453 | tmp = I915_READ(MIPI_CTRL(pipe)); | |
454 | tmp &= ~READ_REQUEST_PRIORITY_MASK; | |
455 | I915_WRITE(MIPI_CTRL(pipe), tmp | READ_REQUEST_PRIORITY_HIGH); | |
456 | ||
457 | /* XXX: why here, why like this? handling in irq handler?! */ | |
458 | I915_WRITE(MIPI_INTR_STAT(pipe), 0xffffffff); | |
459 | I915_WRITE(MIPI_INTR_EN(pipe), 0xffffffff); | |
460 | ||
f6da2842 | 461 | I915_WRITE(MIPI_DPHY_PARAM(pipe), intel_dsi->dphy_reg); |
4e646495 JN |
462 | |
463 | I915_WRITE(MIPI_DPI_RESOLUTION(pipe), | |
464 | adjusted_mode->vdisplay << VERTICAL_ADDRESS_SHIFT | | |
465 | adjusted_mode->hdisplay << HORIZONTAL_ADDRESS_SHIFT); | |
466 | ||
467 | set_dsi_timings(encoder, adjusted_mode); | |
468 | ||
469 | val = intel_dsi->lane_count << DATA_LANES_PRG_REG_SHIFT; | |
470 | if (is_cmd_mode(intel_dsi)) { | |
471 | val |= intel_dsi->channel << CMD_MODE_CHANNEL_NUMBER_SHIFT; | |
472 | val |= CMD_MODE_DATA_WIDTH_8_BIT; /* XXX */ | |
473 | } else { | |
474 | val |= intel_dsi->channel << VID_MODE_CHANNEL_NUMBER_SHIFT; | |
475 | ||
476 | /* XXX: cross-check bpp vs. pixel format? */ | |
477 | val |= intel_dsi->pixel_format; | |
478 | } | |
479 | I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), val); | |
480 | ||
481 | /* timeouts for recovery. one frame IIUC. if counter expires, EOT and | |
482 | * stop state. */ | |
483 | ||
484 | /* | |
485 | * In burst mode, value greater than one DPI line Time in byte clock | |
486 | * (txbyteclkhs) To timeout this timer 1+ of the above said value is | |
487 | * recommended. | |
488 | * | |
489 | * In non-burst mode, Value greater than one DPI frame time in byte | |
490 | * clock(txbyteclkhs) To timeout this timer 1+ of the above said value | |
491 | * is recommended. | |
492 | * | |
493 | * In DBI only mode, value greater than one DBI frame time in byte | |
494 | * clock(txbyteclkhs) To timeout this timer 1+ of the above said value | |
495 | * is recommended. | |
496 | */ | |
497 | ||
498 | if (is_vid_mode(intel_dsi) && | |
499 | intel_dsi->video_mode_format == VIDEO_MODE_BURST) { | |
500 | I915_WRITE(MIPI_HS_TX_TIMEOUT(pipe), | |
501 | txbyteclkhs(adjusted_mode->htotal, bpp, | |
502 | intel_dsi->lane_count) + 1); | |
503 | } else { | |
504 | I915_WRITE(MIPI_HS_TX_TIMEOUT(pipe), | |
505 | txbyteclkhs(adjusted_mode->vtotal * | |
506 | adjusted_mode->htotal, | |
507 | bpp, intel_dsi->lane_count) + 1); | |
508 | } | |
f6da2842 SK |
509 | I915_WRITE(MIPI_LP_RX_TIMEOUT(pipe), intel_dsi->lp_rx_timeout); |
510 | I915_WRITE(MIPI_TURN_AROUND_TIMEOUT(pipe), intel_dsi->turn_arnd_val); | |
511 | I915_WRITE(MIPI_DEVICE_RESET_TIMER(pipe), intel_dsi->rst_timer_val); | |
4e646495 JN |
512 | |
513 | /* dphy stuff */ | |
514 | ||
515 | /* in terms of low power clock */ | |
f1c79f16 SK |
516 | I915_WRITE(MIPI_INIT_COUNT(pipe), txclkesc(intel_dsi->escape_clk_div, 100)); |
517 | ||
518 | val = 0; | |
519 | if (intel_dsi->eotp_pkt == 0) | |
520 | val |= EOT_DISABLE; | |
521 | ||
522 | if (intel_dsi->clock_stop) | |
523 | val |= CLOCKSTOP; | |
4e646495 JN |
524 | |
525 | /* recovery disables */ | |
f1c79f16 | 526 | I915_WRITE(MIPI_EOT_DISABLE(pipe), val); |
4e646495 | 527 | |
cf4dbd2e SK |
528 | /* in terms of low power clock */ |
529 | I915_WRITE(MIPI_INIT_COUNT(pipe), intel_dsi->init_count); | |
530 | ||
4e646495 JN |
531 | /* in terms of txbyteclkhs. actual high to low switch + |
532 | * MIPI_STOP_STATE_STALL * MIPI_LP_BYTECLK. | |
533 | * | |
534 | * XXX: write MIPI_STOP_STATE_STALL? | |
535 | */ | |
f6da2842 SK |
536 | I915_WRITE(MIPI_HIGH_LOW_SWITCH_COUNT(pipe), |
537 | intel_dsi->hs_to_lp_count); | |
4e646495 JN |
538 | |
539 | /* XXX: low power clock equivalence in terms of byte clock. the number | |
540 | * of byte clocks occupied in one low power clock. based on txbyteclkhs | |
541 | * and txclkesc. txclkesc time / txbyteclk time * (105 + | |
542 | * MIPI_STOP_STATE_STALL) / 105.??? | |
543 | */ | |
f6da2842 | 544 | I915_WRITE(MIPI_LP_BYTECLK(pipe), intel_dsi->lp_byte_clk); |
4e646495 JN |
545 | |
546 | /* the bw essential for transmitting 16 long packets containing 252 | |
547 | * bytes meant for dcs write memory command is programmed in this | |
548 | * register in terms of byte clocks. based on dsi transfer rate and the | |
549 | * number of lanes configured the time taken to transmit 16 long packets | |
550 | * in a dsi stream varies. */ | |
f6da2842 | 551 | I915_WRITE(MIPI_DBI_BW_CTRL(pipe), intel_dsi->bw_timer); |
4e646495 JN |
552 | |
553 | I915_WRITE(MIPI_CLK_LANE_SWITCH_TIME_CNT(pipe), | |
f6da2842 SK |
554 | intel_dsi->clk_lp_to_hs_count << LP_HS_SSW_CNT_SHIFT | |
555 | intel_dsi->clk_hs_to_lp_count << HS_LP_PWR_SW_CNT_SHIFT); | |
4e646495 JN |
556 | |
557 | if (is_vid_mode(intel_dsi)) | |
24d9c401 SK |
558 | /* Some panels might have resolution which is not a multiple of |
559 | * 64 like 1366 x 768. Enable RANDOM resolution support for such | |
560 | * panels by default */ | |
4e646495 | 561 | I915_WRITE(MIPI_VIDEO_MODE_FORMAT(pipe), |
f6da2842 | 562 | intel_dsi->video_frmt_cfg_bits | |
24d9c401 SK |
563 | intel_dsi->video_mode_format | |
564 | IP_TG_CONFIG | | |
565 | RANDOM_DPI_DISPLAY_RESOLUTION); | |
4e646495 JN |
566 | } |
567 | ||
568 | static enum drm_connector_status | |
569 | intel_dsi_detect(struct drm_connector *connector, bool force) | |
570 | { | |
571 | struct intel_dsi *intel_dsi = intel_attached_dsi(connector); | |
671dedd2 ID |
572 | struct intel_encoder *intel_encoder = &intel_dsi->base; |
573 | enum intel_display_power_domain power_domain; | |
574 | enum drm_connector_status connector_status; | |
575 | struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private; | |
576 | ||
4e646495 | 577 | DRM_DEBUG_KMS("\n"); |
671dedd2 ID |
578 | power_domain = intel_display_port_power_domain(intel_encoder); |
579 | ||
580 | intel_display_power_get(dev_priv, power_domain); | |
581 | connector_status = intel_dsi->dev.dev_ops->detect(&intel_dsi->dev); | |
582 | intel_display_power_put(dev_priv, power_domain); | |
583 | ||
584 | return connector_status; | |
4e646495 JN |
585 | } |
586 | ||
587 | static int intel_dsi_get_modes(struct drm_connector *connector) | |
588 | { | |
589 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
590 | struct drm_display_mode *mode; | |
591 | ||
592 | DRM_DEBUG_KMS("\n"); | |
593 | ||
594 | if (!intel_connector->panel.fixed_mode) { | |
595 | DRM_DEBUG_KMS("no fixed mode\n"); | |
596 | return 0; | |
597 | } | |
598 | ||
599 | mode = drm_mode_duplicate(connector->dev, | |
600 | intel_connector->panel.fixed_mode); | |
601 | if (!mode) { | |
602 | DRM_DEBUG_KMS("drm_mode_duplicate failed\n"); | |
603 | return 0; | |
604 | } | |
605 | ||
606 | drm_mode_probed_add(connector, mode); | |
607 | return 1; | |
608 | } | |
609 | ||
610 | static void intel_dsi_destroy(struct drm_connector *connector) | |
611 | { | |
612 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
613 | ||
614 | DRM_DEBUG_KMS("\n"); | |
615 | intel_panel_fini(&intel_connector->panel); | |
4e646495 JN |
616 | drm_connector_cleanup(connector); |
617 | kfree(connector); | |
618 | } | |
619 | ||
620 | static const struct drm_encoder_funcs intel_dsi_funcs = { | |
621 | .destroy = intel_encoder_destroy, | |
622 | }; | |
623 | ||
624 | static const struct drm_connector_helper_funcs intel_dsi_connector_helper_funcs = { | |
625 | .get_modes = intel_dsi_get_modes, | |
626 | .mode_valid = intel_dsi_mode_valid, | |
627 | .best_encoder = intel_best_encoder, | |
628 | }; | |
629 | ||
630 | static const struct drm_connector_funcs intel_dsi_connector_funcs = { | |
631 | .dpms = intel_connector_dpms, | |
632 | .detect = intel_dsi_detect, | |
633 | .destroy = intel_dsi_destroy, | |
634 | .fill_modes = drm_helper_probe_single_connector_modes, | |
635 | }; | |
636 | ||
637 | bool intel_dsi_init(struct drm_device *dev) | |
638 | { | |
639 | struct intel_dsi *intel_dsi; | |
640 | struct intel_encoder *intel_encoder; | |
641 | struct drm_encoder *encoder; | |
642 | struct intel_connector *intel_connector; | |
643 | struct drm_connector *connector; | |
644 | struct drm_display_mode *fixed_mode = NULL; | |
645 | const struct intel_dsi_device *dsi; | |
646 | unsigned int i; | |
647 | ||
648 | DRM_DEBUG_KMS("\n"); | |
649 | ||
650 | intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); | |
651 | if (!intel_dsi) | |
652 | return false; | |
653 | ||
654 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); | |
655 | if (!intel_connector) { | |
656 | kfree(intel_dsi); | |
657 | return false; | |
658 | } | |
659 | ||
660 | intel_encoder = &intel_dsi->base; | |
661 | encoder = &intel_encoder->base; | |
662 | intel_dsi->attached_connector = intel_connector; | |
663 | ||
664 | connector = &intel_connector->base; | |
665 | ||
666 | drm_encoder_init(dev, encoder, &intel_dsi_funcs, DRM_MODE_ENCODER_DSI); | |
667 | ||
668 | /* XXX: very likely not all of these are needed */ | |
669 | intel_encoder->hot_plug = intel_dsi_hot_plug; | |
670 | intel_encoder->compute_config = intel_dsi_compute_config; | |
671 | intel_encoder->pre_pll_enable = intel_dsi_pre_pll_enable; | |
672 | intel_encoder->pre_enable = intel_dsi_pre_enable; | |
2634fd7f | 673 | intel_encoder->enable = intel_dsi_enable_nop; |
4e646495 JN |
674 | intel_encoder->mode_set = intel_dsi_mode_set; |
675 | intel_encoder->disable = intel_dsi_disable; | |
676 | intel_encoder->post_disable = intel_dsi_post_disable; | |
677 | intel_encoder->get_hw_state = intel_dsi_get_hw_state; | |
678 | intel_encoder->get_config = intel_dsi_get_config; | |
679 | ||
680 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
4932e2c3 | 681 | intel_connector->unregister = intel_connector_unregister; |
4e646495 JN |
682 | |
683 | for (i = 0; i < ARRAY_SIZE(intel_dsi_devices); i++) { | |
684 | dsi = &intel_dsi_devices[i]; | |
685 | intel_dsi->dev = *dsi; | |
686 | ||
687 | if (dsi->dev_ops->init(&intel_dsi->dev)) | |
688 | break; | |
689 | } | |
690 | ||
691 | if (i == ARRAY_SIZE(intel_dsi_devices)) { | |
692 | DRM_DEBUG_KMS("no device found\n"); | |
693 | goto err; | |
694 | } | |
695 | ||
696 | intel_encoder->type = INTEL_OUTPUT_DSI; | |
697 | intel_encoder->crtc_mask = (1 << 0); /* XXX */ | |
698 | ||
bc079e8b | 699 | intel_encoder->cloneable = 0; |
4e646495 JN |
700 | drm_connector_init(dev, connector, &intel_dsi_connector_funcs, |
701 | DRM_MODE_CONNECTOR_DSI); | |
702 | ||
703 | drm_connector_helper_add(connector, &intel_dsi_connector_helper_funcs); | |
704 | ||
705 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; /*XXX*/ | |
706 | connector->interlace_allowed = false; | |
707 | connector->doublescan_allowed = false; | |
708 | ||
709 | intel_connector_attach_encoder(intel_connector, intel_encoder); | |
710 | ||
711 | drm_sysfs_connector_add(connector); | |
712 | ||
713 | fixed_mode = dsi->dev_ops->get_modes(&intel_dsi->dev); | |
714 | if (!fixed_mode) { | |
715 | DRM_DEBUG_KMS("no fixed mode\n"); | |
716 | goto err; | |
717 | } | |
718 | ||
719 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
4b6ed685 | 720 | intel_panel_init(&intel_connector->panel, fixed_mode, NULL); |
4e646495 JN |
721 | |
722 | return true; | |
723 | ||
724 | err: | |
725 | drm_encoder_cleanup(&intel_encoder->base); | |
726 | kfree(intel_dsi); | |
727 | kfree(intel_connector); | |
728 | ||
729 | return false; | |
730 | } |