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8695b612 AC |
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 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
29 | #include <linux/slab.h> | |
16559ae4 | 30 | #include <linux/module.h> |
612a9aab LT |
31 | #include <drm/drmP.h> |
32 | #include <drm/drm_crtc.h> | |
33 | #include <drm/drm_crtc_helper.h> | |
8695b612 AC |
34 | #include "psb_drv.h" |
35 | #include "psb_intel_drv.h" | |
8695b612 | 36 | #include "psb_intel_reg.h" |
d1fa08f3 | 37 | #include "gma_display.h" |
612a9aab | 38 | #include <drm/drm_dp_helper.h> |
8695b612 | 39 | |
d112a816 ZY |
40 | #define _wait_for(COND, MS, W) ({ \ |
41 | unsigned long timeout__ = jiffies + msecs_to_jiffies(MS); \ | |
42 | int ret__ = 0; \ | |
43 | while (! (COND)) { \ | |
44 | if (time_after(jiffies, timeout__)) { \ | |
45 | ret__ = -ETIMEDOUT; \ | |
46 | break; \ | |
47 | } \ | |
48 | if (W && !in_dbg_master()) msleep(W); \ | |
49 | } \ | |
50 | ret__; \ | |
51 | }) | |
52 | ||
53 | #define wait_for(COND, MS) _wait_for(COND, MS, 1) | |
8695b612 AC |
54 | |
55 | #define DP_LINK_STATUS_SIZE 6 | |
56 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) | |
57 | ||
58 | #define DP_LINK_CONFIGURATION_SIZE 9 | |
59 | ||
60 | #define CDV_FAST_LINK_TRAIN 1 | |
61 | ||
37e7b184 | 62 | struct cdv_intel_dp { |
8695b612 AC |
63 | uint32_t output_reg; |
64 | uint32_t DP; | |
65 | uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]; | |
66 | bool has_audio; | |
67 | int force_audio; | |
68 | uint32_t color_range; | |
69 | uint8_t link_bw; | |
70 | uint8_t lane_count; | |
71 | uint8_t dpcd[4]; | |
367e4408 | 72 | struct gma_encoder *encoder; |
8695b612 AC |
73 | struct i2c_adapter adapter; |
74 | struct i2c_algo_dp_aux_data algo; | |
75 | uint8_t train_set[4]; | |
76 | uint8_t link_status[DP_LINK_STATUS_SIZE]; | |
d112a816 ZY |
77 | int panel_power_up_delay; |
78 | int panel_power_down_delay; | |
79 | int panel_power_cycle_delay; | |
80 | int backlight_on_delay; | |
81 | int backlight_off_delay; | |
82 | struct drm_display_mode *panel_fixed_mode; /* for eDP */ | |
83 | bool panel_on; | |
8695b612 AC |
84 | }; |
85 | ||
86 | struct ddi_regoff { | |
87 | uint32_t PreEmph1; | |
88 | uint32_t PreEmph2; | |
89 | uint32_t VSwing1; | |
90 | uint32_t VSwing2; | |
91 | uint32_t VSwing3; | |
92 | uint32_t VSwing4; | |
93 | uint32_t VSwing5; | |
94 | }; | |
95 | ||
96 | static struct ddi_regoff ddi_DP_train_table[] = { | |
97 | {.PreEmph1 = 0x812c, .PreEmph2 = 0x8124, .VSwing1 = 0x8154, | |
98 | .VSwing2 = 0x8148, .VSwing3 = 0x814C, .VSwing4 = 0x8150, | |
99 | .VSwing5 = 0x8158,}, | |
100 | {.PreEmph1 = 0x822c, .PreEmph2 = 0x8224, .VSwing1 = 0x8254, | |
101 | .VSwing2 = 0x8248, .VSwing3 = 0x824C, .VSwing4 = 0x8250, | |
102 | .VSwing5 = 0x8258,}, | |
103 | }; | |
104 | ||
105 | static uint32_t dp_vswing_premph_table[] = { | |
106 | 0x55338954, 0x4000, | |
107 | 0x554d8954, 0x2000, | |
108 | 0x55668954, 0, | |
109 | 0x559ac0d4, 0x6000, | |
110 | }; | |
111 | /** | |
112 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
113 | * @intel_dp: DP struct | |
114 | * | |
115 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
116 | * will return true, and false otherwise. | |
117 | */ | |
367e4408 | 118 | static bool is_edp(struct gma_encoder *encoder) |
8695b612 | 119 | { |
37e7b184 | 120 | return encoder->type == INTEL_OUTPUT_EDP; |
8695b612 AC |
121 | } |
122 | ||
123 | ||
367e4408 PJ |
124 | static void cdv_intel_dp_start_link_train(struct gma_encoder *encoder); |
125 | static void cdv_intel_dp_complete_link_train(struct gma_encoder *encoder); | |
126 | static void cdv_intel_dp_link_down(struct gma_encoder *encoder); | |
8695b612 AC |
127 | |
128 | static int | |
367e4408 | 129 | cdv_intel_dp_max_lane_count(struct gma_encoder *encoder) |
8695b612 | 130 | { |
37e7b184 | 131 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
132 | int max_lane_count = 4; |
133 | ||
134 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) { | |
135 | max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f; | |
136 | switch (max_lane_count) { | |
137 | case 1: case 2: case 4: | |
138 | break; | |
139 | default: | |
140 | max_lane_count = 4; | |
141 | } | |
142 | } | |
143 | return max_lane_count; | |
144 | } | |
145 | ||
146 | static int | |
367e4408 | 147 | cdv_intel_dp_max_link_bw(struct gma_encoder *encoder) |
8695b612 | 148 | { |
37e7b184 | 149 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
150 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
151 | ||
152 | switch (max_link_bw) { | |
153 | case DP_LINK_BW_1_62: | |
154 | case DP_LINK_BW_2_7: | |
155 | break; | |
156 | default: | |
157 | max_link_bw = DP_LINK_BW_1_62; | |
158 | break; | |
159 | } | |
160 | return max_link_bw; | |
161 | } | |
162 | ||
163 | static int | |
37e7b184 | 164 | cdv_intel_dp_link_clock(uint8_t link_bw) |
8695b612 AC |
165 | { |
166 | if (link_bw == DP_LINK_BW_2_7) | |
167 | return 270000; | |
168 | else | |
169 | return 162000; | |
170 | } | |
171 | ||
172 | static int | |
37e7b184 | 173 | cdv_intel_dp_link_required(int pixel_clock, int bpp) |
8695b612 AC |
174 | { |
175 | return (pixel_clock * bpp + 7) / 8; | |
176 | } | |
177 | ||
178 | static int | |
37e7b184 | 179 | cdv_intel_dp_max_data_rate(int max_link_clock, int max_lanes) |
8695b612 AC |
180 | { |
181 | return (max_link_clock * max_lanes * 19) / 20; | |
182 | } | |
183 | ||
367e4408 | 184 | static void cdv_intel_edp_panel_vdd_on(struct gma_encoder *intel_encoder) |
d112a816 ZY |
185 | { |
186 | struct drm_device *dev = intel_encoder->base.dev; | |
187 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; | |
188 | u32 pp; | |
189 | ||
190 | if (intel_dp->panel_on) { | |
191 | DRM_DEBUG_KMS("Skip VDD on because of panel on\n"); | |
192 | return; | |
193 | } | |
194 | DRM_DEBUG_KMS("\n"); | |
195 | ||
196 | pp = REG_READ(PP_CONTROL); | |
197 | ||
198 | pp |= EDP_FORCE_VDD; | |
199 | REG_WRITE(PP_CONTROL, pp); | |
200 | REG_READ(PP_CONTROL); | |
201 | msleep(intel_dp->panel_power_up_delay); | |
202 | } | |
203 | ||
367e4408 | 204 | static void cdv_intel_edp_panel_vdd_off(struct gma_encoder *intel_encoder) |
d112a816 ZY |
205 | { |
206 | struct drm_device *dev = intel_encoder->base.dev; | |
207 | u32 pp; | |
208 | ||
209 | DRM_DEBUG_KMS("\n"); | |
210 | pp = REG_READ(PP_CONTROL); | |
211 | ||
212 | pp &= ~EDP_FORCE_VDD; | |
213 | REG_WRITE(PP_CONTROL, pp); | |
214 | REG_READ(PP_CONTROL); | |
215 | ||
216 | } | |
217 | ||
218 | /* Returns true if the panel was already on when called */ | |
367e4408 | 219 | static bool cdv_intel_edp_panel_on(struct gma_encoder *intel_encoder) |
d112a816 ZY |
220 | { |
221 | struct drm_device *dev = intel_encoder->base.dev; | |
222 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; | |
223 | u32 pp, idle_on_mask = PP_ON | PP_SEQUENCE_NONE; | |
224 | ||
225 | if (intel_dp->panel_on) | |
226 | return true; | |
227 | ||
228 | DRM_DEBUG_KMS("\n"); | |
229 | pp = REG_READ(PP_CONTROL); | |
230 | pp &= ~PANEL_UNLOCK_MASK; | |
231 | ||
232 | pp |= (PANEL_UNLOCK_REGS | POWER_TARGET_ON); | |
233 | REG_WRITE(PP_CONTROL, pp); | |
234 | REG_READ(PP_CONTROL); | |
235 | ||
236 | if (wait_for(((REG_READ(PP_STATUS) & idle_on_mask) == idle_on_mask), 1000)) { | |
237 | DRM_DEBUG_KMS("Error in Powering up eDP panel, status %x\n", REG_READ(PP_STATUS)); | |
238 | intel_dp->panel_on = false; | |
239 | } else | |
240 | intel_dp->panel_on = true; | |
241 | msleep(intel_dp->panel_power_up_delay); | |
242 | ||
243 | return false; | |
244 | } | |
245 | ||
367e4408 | 246 | static void cdv_intel_edp_panel_off (struct gma_encoder *intel_encoder) |
d112a816 ZY |
247 | { |
248 | struct drm_device *dev = intel_encoder->base.dev; | |
249 | u32 pp, idle_off_mask = PP_ON ; | |
250 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; | |
251 | ||
252 | DRM_DEBUG_KMS("\n"); | |
253 | ||
254 | pp = REG_READ(PP_CONTROL); | |
255 | ||
256 | if ((pp & POWER_TARGET_ON) == 0) | |
257 | return; | |
258 | ||
259 | intel_dp->panel_on = false; | |
260 | pp &= ~PANEL_UNLOCK_MASK; | |
261 | /* ILK workaround: disable reset around power sequence */ | |
262 | ||
263 | pp &= ~POWER_TARGET_ON; | |
264 | pp &= ~EDP_FORCE_VDD; | |
265 | pp &= ~EDP_BLC_ENABLE; | |
266 | REG_WRITE(PP_CONTROL, pp); | |
267 | REG_READ(PP_CONTROL); | |
268 | DRM_DEBUG_KMS("PP_STATUS %x\n", REG_READ(PP_STATUS)); | |
269 | ||
270 | if (wait_for((REG_READ(PP_STATUS) & idle_off_mask) == 0, 1000)) { | |
271 | DRM_DEBUG_KMS("Error in turning off Panel\n"); | |
272 | } | |
273 | ||
274 | msleep(intel_dp->panel_power_cycle_delay); | |
275 | DRM_DEBUG_KMS("Over\n"); | |
276 | } | |
277 | ||
367e4408 | 278 | static void cdv_intel_edp_backlight_on (struct gma_encoder *intel_encoder) |
d112a816 ZY |
279 | { |
280 | struct drm_device *dev = intel_encoder->base.dev; | |
281 | u32 pp; | |
282 | ||
283 | DRM_DEBUG_KMS("\n"); | |
284 | /* | |
285 | * If we enable the backlight right away following a panel power | |
286 | * on, we may see slight flicker as the panel syncs with the eDP | |
287 | * link. So delay a bit to make sure the image is solid before | |
288 | * allowing it to appear. | |
289 | */ | |
290 | msleep(300); | |
291 | pp = REG_READ(PP_CONTROL); | |
292 | ||
293 | pp |= EDP_BLC_ENABLE; | |
294 | REG_WRITE(PP_CONTROL, pp); | |
295 | gma_backlight_enable(dev); | |
296 | } | |
297 | ||
367e4408 | 298 | static void cdv_intel_edp_backlight_off (struct gma_encoder *intel_encoder) |
d112a816 ZY |
299 | { |
300 | struct drm_device *dev = intel_encoder->base.dev; | |
301 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; | |
302 | u32 pp; | |
303 | ||
304 | DRM_DEBUG_KMS("\n"); | |
305 | gma_backlight_disable(dev); | |
306 | msleep(10); | |
307 | pp = REG_READ(PP_CONTROL); | |
308 | ||
309 | pp &= ~EDP_BLC_ENABLE; | |
310 | REG_WRITE(PP_CONTROL, pp); | |
311 | msleep(intel_dp->backlight_off_delay); | |
312 | } | |
313 | ||
8695b612 | 314 | static int |
37e7b184 | 315 | cdv_intel_dp_mode_valid(struct drm_connector *connector, |
8695b612 AC |
316 | struct drm_display_mode *mode) |
317 | { | |
367e4408 | 318 | struct gma_encoder *encoder = gma_attached_encoder(connector); |
d112a816 | 319 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
37e7b184 AC |
320 | int max_link_clock = cdv_intel_dp_link_clock(cdv_intel_dp_max_link_bw(encoder)); |
321 | int max_lanes = cdv_intel_dp_max_lane_count(encoder); | |
d112a816 | 322 | struct drm_psb_private *dev_priv = connector->dev->dev_private; |
8695b612 | 323 | |
d112a816 ZY |
324 | if (is_edp(encoder) && intel_dp->panel_fixed_mode) { |
325 | if (mode->hdisplay > intel_dp->panel_fixed_mode->hdisplay) | |
8695b612 | 326 | return MODE_PANEL; |
d112a816 | 327 | if (mode->vdisplay > intel_dp->panel_fixed_mode->vdisplay) |
8695b612 AC |
328 | return MODE_PANEL; |
329 | } | |
330 | ||
331 | /* only refuse the mode on non eDP since we have seen some weird eDP panels | |
332 | which are outside spec tolerances but somehow work by magic */ | |
37e7b184 | 333 | if (!is_edp(encoder) && |
d112a816 | 334 | (cdv_intel_dp_link_required(mode->clock, dev_priv->edp.bpp) |
37e7b184 | 335 | > cdv_intel_dp_max_data_rate(max_link_clock, max_lanes))) |
8695b612 AC |
336 | return MODE_CLOCK_HIGH; |
337 | ||
d112a816 ZY |
338 | if (is_edp(encoder)) { |
339 | if (cdv_intel_dp_link_required(mode->clock, 24) | |
340 | > cdv_intel_dp_max_data_rate(max_link_clock, max_lanes)) | |
341 | return MODE_CLOCK_HIGH; | |
342 | ||
343 | } | |
8695b612 AC |
344 | if (mode->clock < 10000) |
345 | return MODE_CLOCK_LOW; | |
346 | ||
347 | return MODE_OK; | |
348 | } | |
349 | ||
350 | static uint32_t | |
351 | pack_aux(uint8_t *src, int src_bytes) | |
352 | { | |
353 | int i; | |
354 | uint32_t v = 0; | |
355 | ||
356 | if (src_bytes > 4) | |
357 | src_bytes = 4; | |
358 | for (i = 0; i < src_bytes; i++) | |
359 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
360 | return v; | |
361 | } | |
362 | ||
363 | static void | |
364 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
365 | { | |
366 | int i; | |
367 | if (dst_bytes > 4) | |
368 | dst_bytes = 4; | |
369 | for (i = 0; i < dst_bytes; i++) | |
370 | dst[i] = src >> ((3-i) * 8); | |
371 | } | |
372 | ||
373 | static int | |
367e4408 | 374 | cdv_intel_dp_aux_ch(struct gma_encoder *encoder, |
8695b612 AC |
375 | uint8_t *send, int send_bytes, |
376 | uint8_t *recv, int recv_size) | |
377 | { | |
37e7b184 | 378 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 | 379 | uint32_t output_reg = intel_dp->output_reg; |
37e7b184 | 380 | struct drm_device *dev = encoder->base.dev; |
8695b612 AC |
381 | uint32_t ch_ctl = output_reg + 0x10; |
382 | uint32_t ch_data = ch_ctl + 4; | |
383 | int i; | |
384 | int recv_bytes; | |
385 | uint32_t status; | |
386 | uint32_t aux_clock_divider; | |
387 | int try, precharge; | |
388 | ||
389 | /* The clock divider is based off the hrawclk, | |
390 | * and would like to run at 2MHz. So, take the | |
391 | * hrawclk value and divide by 2 and use that | |
392 | * On CDV platform it uses 200MHz as hrawclk. | |
393 | * | |
394 | */ | |
395 | aux_clock_divider = 200 / 2; | |
396 | ||
397 | precharge = 4; | |
d112a816 ZY |
398 | if (is_edp(encoder)) |
399 | precharge = 10; | |
8695b612 AC |
400 | |
401 | if (REG_READ(ch_ctl) & DP_AUX_CH_CTL_SEND_BUSY) { | |
402 | DRM_ERROR("dp_aux_ch not started status 0x%08x\n", | |
403 | REG_READ(ch_ctl)); | |
404 | return -EBUSY; | |
405 | } | |
406 | ||
407 | /* Must try at least 3 times according to DP spec */ | |
408 | for (try = 0; try < 5; try++) { | |
409 | /* Load the send data into the aux channel data registers */ | |
410 | for (i = 0; i < send_bytes; i += 4) | |
411 | REG_WRITE(ch_data + i, | |
412 | pack_aux(send + i, send_bytes - i)); | |
413 | ||
414 | /* Send the command and wait for it to complete */ | |
415 | REG_WRITE(ch_ctl, | |
416 | DP_AUX_CH_CTL_SEND_BUSY | | |
417 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
418 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
419 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
420 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | | |
421 | DP_AUX_CH_CTL_DONE | | |
422 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
423 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
424 | for (;;) { | |
425 | status = REG_READ(ch_ctl); | |
426 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) | |
427 | break; | |
428 | udelay(100); | |
429 | } | |
430 | ||
431 | /* Clear done status and any errors */ | |
432 | REG_WRITE(ch_ctl, | |
433 | status | | |
434 | DP_AUX_CH_CTL_DONE | | |
435 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
436 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
437 | if (status & DP_AUX_CH_CTL_DONE) | |
438 | break; | |
439 | } | |
440 | ||
441 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { | |
442 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); | |
443 | return -EBUSY; | |
444 | } | |
445 | ||
446 | /* Check for timeout or receive error. | |
447 | * Timeouts occur when the sink is not connected | |
448 | */ | |
449 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { | |
450 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); | |
451 | return -EIO; | |
452 | } | |
453 | ||
454 | /* Timeouts occur when the device isn't connected, so they're | |
455 | * "normal" -- don't fill the kernel log with these */ | |
456 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { | |
457 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); | |
458 | return -ETIMEDOUT; | |
459 | } | |
460 | ||
461 | /* Unload any bytes sent back from the other side */ | |
462 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
463 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
464 | if (recv_bytes > recv_size) | |
465 | recv_bytes = recv_size; | |
466 | ||
467 | for (i = 0; i < recv_bytes; i += 4) | |
468 | unpack_aux(REG_READ(ch_data + i), | |
469 | recv + i, recv_bytes - i); | |
470 | ||
471 | return recv_bytes; | |
472 | } | |
473 | ||
474 | /* Write data to the aux channel in native mode */ | |
475 | static int | |
367e4408 | 476 | cdv_intel_dp_aux_native_write(struct gma_encoder *encoder, |
8695b612 AC |
477 | uint16_t address, uint8_t *send, int send_bytes) |
478 | { | |
479 | int ret; | |
480 | uint8_t msg[20]; | |
481 | int msg_bytes; | |
482 | uint8_t ack; | |
483 | ||
484 | if (send_bytes > 16) | |
485 | return -1; | |
486 | msg[0] = AUX_NATIVE_WRITE << 4; | |
487 | msg[1] = address >> 8; | |
488 | msg[2] = address & 0xff; | |
489 | msg[3] = send_bytes - 1; | |
490 | memcpy(&msg[4], send, send_bytes); | |
491 | msg_bytes = send_bytes + 4; | |
492 | for (;;) { | |
37e7b184 | 493 | ret = cdv_intel_dp_aux_ch(encoder, msg, msg_bytes, &ack, 1); |
8695b612 AC |
494 | if (ret < 0) |
495 | return ret; | |
496 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
497 | break; | |
498 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
499 | udelay(100); | |
500 | else | |
501 | return -EIO; | |
502 | } | |
503 | return send_bytes; | |
504 | } | |
505 | ||
506 | /* Write a single byte to the aux channel in native mode */ | |
507 | static int | |
367e4408 | 508 | cdv_intel_dp_aux_native_write_1(struct gma_encoder *encoder, |
8695b612 AC |
509 | uint16_t address, uint8_t byte) |
510 | { | |
37e7b184 | 511 | return cdv_intel_dp_aux_native_write(encoder, address, &byte, 1); |
8695b612 AC |
512 | } |
513 | ||
514 | /* read bytes from a native aux channel */ | |
515 | static int | |
367e4408 | 516 | cdv_intel_dp_aux_native_read(struct gma_encoder *encoder, |
8695b612 AC |
517 | uint16_t address, uint8_t *recv, int recv_bytes) |
518 | { | |
519 | uint8_t msg[4]; | |
520 | int msg_bytes; | |
521 | uint8_t reply[20]; | |
522 | int reply_bytes; | |
523 | uint8_t ack; | |
524 | int ret; | |
525 | ||
526 | msg[0] = AUX_NATIVE_READ << 4; | |
527 | msg[1] = address >> 8; | |
528 | msg[2] = address & 0xff; | |
529 | msg[3] = recv_bytes - 1; | |
530 | ||
531 | msg_bytes = 4; | |
532 | reply_bytes = recv_bytes + 1; | |
533 | ||
534 | for (;;) { | |
37e7b184 | 535 | ret = cdv_intel_dp_aux_ch(encoder, msg, msg_bytes, |
8695b612 AC |
536 | reply, reply_bytes); |
537 | if (ret == 0) | |
538 | return -EPROTO; | |
539 | if (ret < 0) | |
540 | return ret; | |
541 | ack = reply[0]; | |
542 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
543 | memcpy(recv, reply + 1, ret - 1); | |
544 | return ret - 1; | |
545 | } | |
546 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
547 | udelay(100); | |
548 | else | |
549 | return -EIO; | |
550 | } | |
551 | } | |
552 | ||
553 | static int | |
37e7b184 | 554 | cdv_intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
8695b612 AC |
555 | uint8_t write_byte, uint8_t *read_byte) |
556 | { | |
557 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; | |
37e7b184 AC |
558 | struct cdv_intel_dp *intel_dp = container_of(adapter, |
559 | struct cdv_intel_dp, | |
8695b612 | 560 | adapter); |
367e4408 | 561 | struct gma_encoder *encoder = intel_dp->encoder; |
8695b612 AC |
562 | uint16_t address = algo_data->address; |
563 | uint8_t msg[5]; | |
564 | uint8_t reply[2]; | |
565 | unsigned retry; | |
566 | int msg_bytes; | |
567 | int reply_bytes; | |
568 | int ret; | |
569 | ||
570 | /* Set up the command byte */ | |
571 | if (mode & MODE_I2C_READ) | |
572 | msg[0] = AUX_I2C_READ << 4; | |
573 | else | |
574 | msg[0] = AUX_I2C_WRITE << 4; | |
575 | ||
576 | if (!(mode & MODE_I2C_STOP)) | |
577 | msg[0] |= AUX_I2C_MOT << 4; | |
578 | ||
579 | msg[1] = address >> 8; | |
580 | msg[2] = address; | |
581 | ||
582 | switch (mode) { | |
583 | case MODE_I2C_WRITE: | |
584 | msg[3] = 0; | |
585 | msg[4] = write_byte; | |
586 | msg_bytes = 5; | |
587 | reply_bytes = 1; | |
588 | break; | |
589 | case MODE_I2C_READ: | |
590 | msg[3] = 0; | |
591 | msg_bytes = 4; | |
592 | reply_bytes = 2; | |
593 | break; | |
594 | default: | |
595 | msg_bytes = 3; | |
596 | reply_bytes = 1; | |
597 | break; | |
598 | } | |
599 | ||
600 | for (retry = 0; retry < 5; retry++) { | |
37e7b184 | 601 | ret = cdv_intel_dp_aux_ch(encoder, |
8695b612 AC |
602 | msg, msg_bytes, |
603 | reply, reply_bytes); | |
604 | if (ret < 0) { | |
605 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); | |
606 | return ret; | |
607 | } | |
608 | ||
609 | switch (reply[0] & AUX_NATIVE_REPLY_MASK) { | |
610 | case AUX_NATIVE_REPLY_ACK: | |
611 | /* I2C-over-AUX Reply field is only valid | |
612 | * when paired with AUX ACK. | |
613 | */ | |
614 | break; | |
615 | case AUX_NATIVE_REPLY_NACK: | |
616 | DRM_DEBUG_KMS("aux_ch native nack\n"); | |
617 | return -EREMOTEIO; | |
618 | case AUX_NATIVE_REPLY_DEFER: | |
619 | udelay(100); | |
620 | continue; | |
621 | default: | |
622 | DRM_ERROR("aux_ch invalid native reply 0x%02x\n", | |
623 | reply[0]); | |
624 | return -EREMOTEIO; | |
625 | } | |
626 | ||
627 | switch (reply[0] & AUX_I2C_REPLY_MASK) { | |
628 | case AUX_I2C_REPLY_ACK: | |
629 | if (mode == MODE_I2C_READ) { | |
630 | *read_byte = reply[1]; | |
631 | } | |
632 | return reply_bytes - 1; | |
633 | case AUX_I2C_REPLY_NACK: | |
634 | DRM_DEBUG_KMS("aux_i2c nack\n"); | |
635 | return -EREMOTEIO; | |
636 | case AUX_I2C_REPLY_DEFER: | |
637 | DRM_DEBUG_KMS("aux_i2c defer\n"); | |
638 | udelay(100); | |
639 | break; | |
640 | default: | |
641 | DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]); | |
642 | return -EREMOTEIO; | |
643 | } | |
644 | } | |
645 | ||
646 | DRM_ERROR("too many retries, giving up\n"); | |
647 | return -EREMOTEIO; | |
648 | } | |
649 | ||
650 | static int | |
367e4408 PJ |
651 | cdv_intel_dp_i2c_init(struct gma_connector *connector, |
652 | struct gma_encoder *encoder, const char *name) | |
8695b612 | 653 | { |
37e7b184 | 654 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
d112a816 ZY |
655 | int ret; |
656 | ||
8695b612 | 657 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
d112a816 | 658 | |
8695b612 AC |
659 | intel_dp->algo.running = false; |
660 | intel_dp->algo.address = 0; | |
37e7b184 | 661 | intel_dp->algo.aux_ch = cdv_intel_dp_i2c_aux_ch; |
8695b612 AC |
662 | |
663 | memset(&intel_dp->adapter, '\0', sizeof (intel_dp->adapter)); | |
664 | intel_dp->adapter.owner = THIS_MODULE; | |
665 | intel_dp->adapter.class = I2C_CLASS_DDC; | |
666 | strncpy (intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1); | |
667 | intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0'; | |
668 | intel_dp->adapter.algo_data = &intel_dp->algo; | |
37e7b184 | 669 | intel_dp->adapter.dev.parent = &connector->base.kdev; |
8695b612 | 670 | |
d112a816 ZY |
671 | if (is_edp(encoder)) |
672 | cdv_intel_edp_panel_vdd_on(encoder); | |
673 | ret = i2c_dp_aux_add_bus(&intel_dp->adapter); | |
674 | if (is_edp(encoder)) | |
675 | cdv_intel_edp_panel_vdd_off(encoder); | |
676 | ||
677 | return ret; | |
678 | } | |
679 | ||
680 | void cdv_intel_fixed_panel_mode(struct drm_display_mode *fixed_mode, | |
681 | struct drm_display_mode *adjusted_mode) | |
682 | { | |
683 | adjusted_mode->hdisplay = fixed_mode->hdisplay; | |
684 | adjusted_mode->hsync_start = fixed_mode->hsync_start; | |
685 | adjusted_mode->hsync_end = fixed_mode->hsync_end; | |
686 | adjusted_mode->htotal = fixed_mode->htotal; | |
687 | ||
688 | adjusted_mode->vdisplay = fixed_mode->vdisplay; | |
689 | adjusted_mode->vsync_start = fixed_mode->vsync_start; | |
690 | adjusted_mode->vsync_end = fixed_mode->vsync_end; | |
691 | adjusted_mode->vtotal = fixed_mode->vtotal; | |
692 | ||
693 | adjusted_mode->clock = fixed_mode->clock; | |
694 | ||
695 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
8695b612 AC |
696 | } |
697 | ||
698 | static bool | |
37e7b184 | 699 | cdv_intel_dp_mode_fixup(struct drm_encoder *encoder, const struct drm_display_mode *mode, |
8695b612 AC |
700 | struct drm_display_mode *adjusted_mode) |
701 | { | |
d112a816 | 702 | struct drm_psb_private *dev_priv = encoder->dev->dev_private; |
367e4408 | 703 | struct gma_encoder *intel_encoder = to_gma_encoder(encoder); |
37e7b184 | 704 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; |
8695b612 | 705 | int lane_count, clock; |
37e7b184 AC |
706 | int max_lane_count = cdv_intel_dp_max_lane_count(intel_encoder); |
707 | int max_clock = cdv_intel_dp_max_link_bw(intel_encoder) == DP_LINK_BW_2_7 ? 1 : 0; | |
8695b612 | 708 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
d112a816 ZY |
709 | int refclock = mode->clock; |
710 | int bpp = 24; | |
8695b612 | 711 | |
d112a816 ZY |
712 | if (is_edp(intel_encoder) && intel_dp->panel_fixed_mode) { |
713 | cdv_intel_fixed_panel_mode(intel_dp->panel_fixed_mode, adjusted_mode); | |
714 | refclock = intel_dp->panel_fixed_mode->clock; | |
715 | bpp = dev_priv->edp.bpp; | |
716 | } | |
8695b612 AC |
717 | |
718 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
719 | for (clock = max_clock; clock >= 0; clock--) { | |
37e7b184 | 720 | int link_avail = cdv_intel_dp_max_data_rate(cdv_intel_dp_link_clock(bws[clock]), lane_count); |
8695b612 | 721 | |
d112a816 | 722 | if (cdv_intel_dp_link_required(refclock, bpp) <= link_avail) { |
8695b612 AC |
723 | intel_dp->link_bw = bws[clock]; |
724 | intel_dp->lane_count = lane_count; | |
37e7b184 | 725 | adjusted_mode->clock = cdv_intel_dp_link_clock(intel_dp->link_bw); |
8695b612 AC |
726 | DRM_DEBUG_KMS("Display port link bw %02x lane " |
727 | "count %d clock %d\n", | |
728 | intel_dp->link_bw, intel_dp->lane_count, | |
729 | adjusted_mode->clock); | |
730 | return true; | |
731 | } | |
732 | } | |
733 | } | |
d112a816 ZY |
734 | if (is_edp(intel_encoder)) { |
735 | /* okay we failed just pick the highest */ | |
736 | intel_dp->lane_count = max_lane_count; | |
737 | intel_dp->link_bw = bws[max_clock]; | |
738 | adjusted_mode->clock = cdv_intel_dp_link_clock(intel_dp->link_bw); | |
739 | DRM_DEBUG_KMS("Force picking display port link bw %02x lane " | |
740 | "count %d clock %d\n", | |
741 | intel_dp->link_bw, intel_dp->lane_count, | |
742 | adjusted_mode->clock); | |
743 | ||
744 | return true; | |
745 | } | |
8695b612 AC |
746 | return false; |
747 | } | |
748 | ||
37e7b184 | 749 | struct cdv_intel_dp_m_n { |
8695b612 AC |
750 | uint32_t tu; |
751 | uint32_t gmch_m; | |
752 | uint32_t gmch_n; | |
753 | uint32_t link_m; | |
754 | uint32_t link_n; | |
755 | }; | |
756 | ||
757 | static void | |
d112a816 | 758 | cdv_intel_reduce_ratio(uint32_t *num, uint32_t *den) |
8695b612 AC |
759 | { |
760 | /* | |
761 | while (*num > 0xffffff || *den > 0xffffff) { | |
762 | *num >>= 1; | |
763 | *den >>= 1; | |
764 | }*/ | |
765 | uint64_t value, m; | |
766 | m = *num; | |
767 | value = m * (0x800000); | |
768 | m = do_div(value, *den); | |
769 | *num = value; | |
770 | *den = 0x800000; | |
771 | } | |
772 | ||
773 | static void | |
37e7b184 | 774 | cdv_intel_dp_compute_m_n(int bpp, |
8695b612 AC |
775 | int nlanes, |
776 | int pixel_clock, | |
777 | int link_clock, | |
37e7b184 | 778 | struct cdv_intel_dp_m_n *m_n) |
8695b612 AC |
779 | { |
780 | m_n->tu = 64; | |
781 | m_n->gmch_m = (pixel_clock * bpp + 7) >> 3; | |
782 | m_n->gmch_n = link_clock * nlanes; | |
d112a816 | 783 | cdv_intel_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); |
8695b612 AC |
784 | m_n->link_m = pixel_clock; |
785 | m_n->link_n = link_clock; | |
d112a816 | 786 | cdv_intel_reduce_ratio(&m_n->link_m, &m_n->link_n); |
8695b612 AC |
787 | } |
788 | ||
789 | void | |
37e7b184 | 790 | cdv_intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, |
8695b612 AC |
791 | struct drm_display_mode *adjusted_mode) |
792 | { | |
793 | struct drm_device *dev = crtc->dev; | |
d112a816 | 794 | struct drm_psb_private *dev_priv = dev->dev_private; |
8695b612 AC |
795 | struct drm_mode_config *mode_config = &dev->mode_config; |
796 | struct drm_encoder *encoder; | |
6306865d | 797 | struct gma_crtc *gma_crtc = to_gma_crtc(crtc); |
8695b612 | 798 | int lane_count = 4, bpp = 24; |
37e7b184 | 799 | struct cdv_intel_dp_m_n m_n; |
6306865d | 800 | int pipe = gma_crtc->pipe; |
8695b612 AC |
801 | |
802 | /* | |
803 | * Find the lane count in the intel_encoder private | |
804 | */ | |
805 | list_for_each_entry(encoder, &mode_config->encoder_list, head) { | |
367e4408 | 806 | struct gma_encoder *intel_encoder; |
37e7b184 | 807 | struct cdv_intel_dp *intel_dp; |
8695b612 AC |
808 | |
809 | if (encoder->crtc != crtc) | |
810 | continue; | |
811 | ||
367e4408 | 812 | intel_encoder = to_gma_encoder(encoder); |
37e7b184 AC |
813 | intel_dp = intel_encoder->dev_priv; |
814 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) { | |
8695b612 AC |
815 | lane_count = intel_dp->lane_count; |
816 | break; | |
37e7b184 | 817 | } else if (is_edp(intel_encoder)) { |
8695b612 | 818 | lane_count = intel_dp->lane_count; |
d112a816 | 819 | bpp = dev_priv->edp.bpp; |
8695b612 AC |
820 | break; |
821 | } | |
822 | } | |
823 | ||
824 | /* | |
825 | * Compute the GMCH and Link ratios. The '3' here is | |
826 | * the number of bytes_per_pixel post-LUT, which we always | |
827 | * set up for 8-bits of R/G/B, or 3 bytes total. | |
828 | */ | |
37e7b184 | 829 | cdv_intel_dp_compute_m_n(bpp, lane_count, |
8695b612 AC |
830 | mode->clock, adjusted_mode->clock, &m_n); |
831 | ||
832 | { | |
833 | REG_WRITE(PIPE_GMCH_DATA_M(pipe), | |
834 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
835 | m_n.gmch_m); | |
836 | REG_WRITE(PIPE_GMCH_DATA_N(pipe), m_n.gmch_n); | |
837 | REG_WRITE(PIPE_DP_LINK_M(pipe), m_n.link_m); | |
838 | REG_WRITE(PIPE_DP_LINK_N(pipe), m_n.link_n); | |
839 | } | |
840 | } | |
841 | ||
842 | static void | |
37e7b184 | 843 | cdv_intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, |
8695b612 AC |
844 | struct drm_display_mode *adjusted_mode) |
845 | { | |
367e4408 | 846 | struct gma_encoder *intel_encoder = to_gma_encoder(encoder); |
8695b612 | 847 | struct drm_crtc *crtc = encoder->crtc; |
6306865d | 848 | struct gma_crtc *gma_crtc = to_gma_crtc(crtc); |
37e7b184 | 849 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; |
d112a816 | 850 | struct drm_device *dev = encoder->dev; |
8695b612 AC |
851 | |
852 | intel_dp->DP = DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; | |
853 | intel_dp->DP |= intel_dp->color_range; | |
854 | ||
855 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
856 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
857 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
858 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
859 | ||
860 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
861 | ||
862 | switch (intel_dp->lane_count) { | |
863 | case 1: | |
864 | intel_dp->DP |= DP_PORT_WIDTH_1; | |
865 | break; | |
866 | case 2: | |
867 | intel_dp->DP |= DP_PORT_WIDTH_2; | |
868 | break; | |
869 | case 4: | |
870 | intel_dp->DP |= DP_PORT_WIDTH_4; | |
871 | break; | |
872 | } | |
873 | if (intel_dp->has_audio) | |
874 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; | |
875 | ||
876 | memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); | |
877 | intel_dp->link_configuration[0] = intel_dp->link_bw; | |
878 | intel_dp->link_configuration[1] = intel_dp->lane_count; | |
879 | ||
880 | /* | |
881 | * Check for DPCD version > 1.1 and enhanced framing support | |
882 | */ | |
883 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
884 | (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { | |
885 | intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
886 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
887 | } | |
888 | ||
889 | /* CPT DP's pipe select is decided in TRANS_DP_CTL */ | |
6306865d | 890 | if (gma_crtc->pipe == 1) |
8695b612 AC |
891 | intel_dp->DP |= DP_PIPEB_SELECT; |
892 | ||
d112a816 | 893 | REG_WRITE(intel_dp->output_reg, (intel_dp->DP | DP_PORT_EN)); |
8695b612 | 894 | DRM_DEBUG_KMS("DP expected reg is %x\n", intel_dp->DP); |
d112a816 ZY |
895 | if (is_edp(intel_encoder)) { |
896 | uint32_t pfit_control; | |
897 | cdv_intel_edp_panel_on(intel_encoder); | |
898 | ||
899 | if (mode->hdisplay != adjusted_mode->hdisplay || | |
900 | mode->vdisplay != adjusted_mode->vdisplay) | |
901 | pfit_control = PFIT_ENABLE; | |
902 | else | |
903 | pfit_control = 0; | |
904 | ||
6306865d | 905 | pfit_control |= gma_crtc->pipe << PFIT_PIPE_SHIFT; |
d112a816 ZY |
906 | |
907 | REG_WRITE(PFIT_CONTROL, pfit_control); | |
908 | } | |
8695b612 AC |
909 | } |
910 | ||
911 | ||
912 | /* If the sink supports it, try to set the power state appropriately */ | |
367e4408 | 913 | static void cdv_intel_dp_sink_dpms(struct gma_encoder *encoder, int mode) |
8695b612 | 914 | { |
37e7b184 | 915 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
916 | int ret, i; |
917 | ||
918 | /* Should have a valid DPCD by this point */ | |
919 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
920 | return; | |
921 | ||
922 | if (mode != DRM_MODE_DPMS_ON) { | |
37e7b184 | 923 | ret = cdv_intel_dp_aux_native_write_1(encoder, DP_SET_POWER, |
8695b612 AC |
924 | DP_SET_POWER_D3); |
925 | if (ret != 1) | |
926 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
927 | } else { | |
928 | /* | |
929 | * When turning on, we need to retry for 1ms to give the sink | |
930 | * time to wake up. | |
931 | */ | |
932 | for (i = 0; i < 3; i++) { | |
37e7b184 | 933 | ret = cdv_intel_dp_aux_native_write_1(encoder, |
8695b612 AC |
934 | DP_SET_POWER, |
935 | DP_SET_POWER_D0); | |
936 | if (ret == 1) | |
937 | break; | |
938 | udelay(1000); | |
939 | } | |
940 | } | |
941 | } | |
942 | ||
37e7b184 | 943 | static void cdv_intel_dp_prepare(struct drm_encoder *encoder) |
8695b612 | 944 | { |
367e4408 | 945 | struct gma_encoder *intel_encoder = to_gma_encoder(encoder); |
d112a816 | 946 | int edp = is_edp(intel_encoder); |
8695b612 | 947 | |
d112a816 ZY |
948 | if (edp) { |
949 | cdv_intel_edp_backlight_off(intel_encoder); | |
950 | cdv_intel_edp_panel_off(intel_encoder); | |
951 | cdv_intel_edp_panel_vdd_on(intel_encoder); | |
952 | } | |
8695b612 | 953 | /* Wake up the sink first */ |
37e7b184 AC |
954 | cdv_intel_dp_sink_dpms(intel_encoder, DRM_MODE_DPMS_ON); |
955 | cdv_intel_dp_link_down(intel_encoder); | |
d112a816 ZY |
956 | if (edp) |
957 | cdv_intel_edp_panel_vdd_off(intel_encoder); | |
8695b612 AC |
958 | } |
959 | ||
37e7b184 | 960 | static void cdv_intel_dp_commit(struct drm_encoder *encoder) |
8695b612 | 961 | { |
367e4408 | 962 | struct gma_encoder *intel_encoder = to_gma_encoder(encoder); |
d112a816 | 963 | int edp = is_edp(intel_encoder); |
8695b612 | 964 | |
d112a816 ZY |
965 | if (edp) |
966 | cdv_intel_edp_panel_on(intel_encoder); | |
37e7b184 AC |
967 | cdv_intel_dp_start_link_train(intel_encoder); |
968 | cdv_intel_dp_complete_link_train(intel_encoder); | |
d112a816 ZY |
969 | if (edp) |
970 | cdv_intel_edp_backlight_on(intel_encoder); | |
8695b612 AC |
971 | } |
972 | ||
973 | static void | |
37e7b184 | 974 | cdv_intel_dp_dpms(struct drm_encoder *encoder, int mode) |
8695b612 | 975 | { |
367e4408 | 976 | struct gma_encoder *intel_encoder = to_gma_encoder(encoder); |
37e7b184 | 977 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; |
8695b612 AC |
978 | struct drm_device *dev = encoder->dev; |
979 | uint32_t dp_reg = REG_READ(intel_dp->output_reg); | |
d112a816 | 980 | int edp = is_edp(intel_encoder); |
8695b612 AC |
981 | |
982 | if (mode != DRM_MODE_DPMS_ON) { | |
d112a816 ZY |
983 | if (edp) { |
984 | cdv_intel_edp_backlight_off(intel_encoder); | |
985 | cdv_intel_edp_panel_vdd_on(intel_encoder); | |
986 | } | |
37e7b184 AC |
987 | cdv_intel_dp_sink_dpms(intel_encoder, mode); |
988 | cdv_intel_dp_link_down(intel_encoder); | |
d112a816 ZY |
989 | if (edp) { |
990 | cdv_intel_edp_panel_vdd_off(intel_encoder); | |
991 | cdv_intel_edp_panel_off(intel_encoder); | |
992 | } | |
8695b612 | 993 | } else { |
d112a816 ZY |
994 | if (edp) |
995 | cdv_intel_edp_panel_on(intel_encoder); | |
37e7b184 | 996 | cdv_intel_dp_sink_dpms(intel_encoder, mode); |
8695b612 | 997 | if (!(dp_reg & DP_PORT_EN)) { |
37e7b184 AC |
998 | cdv_intel_dp_start_link_train(intel_encoder); |
999 | cdv_intel_dp_complete_link_train(intel_encoder); | |
8695b612 | 1000 | } |
d112a816 ZY |
1001 | if (edp) |
1002 | cdv_intel_edp_backlight_on(intel_encoder); | |
8695b612 AC |
1003 | } |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * Native read with retry for link status and receiver capability reads for | |
1008 | * cases where the sink may still be asleep. | |
1009 | */ | |
1010 | static bool | |
367e4408 | 1011 | cdv_intel_dp_aux_native_read_retry(struct gma_encoder *encoder, uint16_t address, |
8695b612 AC |
1012 | uint8_t *recv, int recv_bytes) |
1013 | { | |
1014 | int ret, i; | |
1015 | ||
1016 | /* | |
1017 | * Sinks are *supposed* to come up within 1ms from an off state, | |
1018 | * but we're also supposed to retry 3 times per the spec. | |
1019 | */ | |
1020 | for (i = 0; i < 3; i++) { | |
37e7b184 | 1021 | ret = cdv_intel_dp_aux_native_read(encoder, address, recv, |
8695b612 AC |
1022 | recv_bytes); |
1023 | if (ret == recv_bytes) | |
1024 | return true; | |
1025 | udelay(1000); | |
1026 | } | |
1027 | ||
1028 | return false; | |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
1033 | * link status information | |
1034 | */ | |
1035 | static bool | |
367e4408 | 1036 | cdv_intel_dp_get_link_status(struct gma_encoder *encoder) |
8695b612 | 1037 | { |
37e7b184 AC |
1038 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
1039 | return cdv_intel_dp_aux_native_read_retry(encoder, | |
8695b612 AC |
1040 | DP_LANE0_1_STATUS, |
1041 | intel_dp->link_status, | |
1042 | DP_LINK_STATUS_SIZE); | |
1043 | } | |
1044 | ||
1045 | static uint8_t | |
37e7b184 | 1046 | cdv_intel_dp_link_status(uint8_t link_status[DP_LINK_STATUS_SIZE], |
8695b612 AC |
1047 | int r) |
1048 | { | |
1049 | return link_status[r - DP_LANE0_1_STATUS]; | |
1050 | } | |
1051 | ||
1052 | static uint8_t | |
37e7b184 | 1053 | cdv_intel_get_adjust_request_voltage(uint8_t link_status[DP_LINK_STATUS_SIZE], |
8695b612 AC |
1054 | int lane) |
1055 | { | |
1056 | int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); | |
1057 | int s = ((lane & 1) ? | |
1058 | DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : | |
1059 | DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT); | |
37e7b184 | 1060 | uint8_t l = cdv_intel_dp_link_status(link_status, i); |
8695b612 AC |
1061 | |
1062 | return ((l >> s) & 3) << DP_TRAIN_VOLTAGE_SWING_SHIFT; | |
1063 | } | |
1064 | ||
1065 | static uint8_t | |
37e7b184 | 1066 | cdv_intel_get_adjust_request_pre_emphasis(uint8_t link_status[DP_LINK_STATUS_SIZE], |
8695b612 AC |
1067 | int lane) |
1068 | { | |
1069 | int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); | |
1070 | int s = ((lane & 1) ? | |
1071 | DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT : | |
1072 | DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT); | |
37e7b184 | 1073 | uint8_t l = cdv_intel_dp_link_status(link_status, i); |
8695b612 AC |
1074 | |
1075 | return ((l >> s) & 3) << DP_TRAIN_PRE_EMPHASIS_SHIFT; | |
1076 | } | |
1077 | ||
1078 | ||
1079 | #if 0 | |
1080 | static char *voltage_names[] = { | |
1081 | "0.4V", "0.6V", "0.8V", "1.2V" | |
1082 | }; | |
1083 | static char *pre_emph_names[] = { | |
1084 | "0dB", "3.5dB", "6dB", "9.5dB" | |
1085 | }; | |
1086 | static char *link_train_names[] = { | |
1087 | "pattern 1", "pattern 2", "idle", "off" | |
1088 | }; | |
1089 | #endif | |
1090 | ||
1091 | #define CDV_DP_VOLTAGE_MAX DP_TRAIN_VOLTAGE_SWING_1200 | |
1092 | /* | |
1093 | static uint8_t | |
37e7b184 | 1094 | cdv_intel_dp_pre_emphasis_max(uint8_t voltage_swing) |
8695b612 AC |
1095 | { |
1096 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1097 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1098 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1099 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1100 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1101 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1102 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1103 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1104 | default: | |
1105 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1106 | } | |
1107 | } | |
1108 | */ | |
1109 | static void | |
367e4408 | 1110 | cdv_intel_get_adjust_train(struct gma_encoder *encoder) |
8695b612 | 1111 | { |
37e7b184 | 1112 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1113 | uint8_t v = 0; |
1114 | uint8_t p = 0; | |
1115 | int lane; | |
1116 | ||
1117 | for (lane = 0; lane < intel_dp->lane_count; lane++) { | |
37e7b184 AC |
1118 | uint8_t this_v = cdv_intel_get_adjust_request_voltage(intel_dp->link_status, lane); |
1119 | uint8_t this_p = cdv_intel_get_adjust_request_pre_emphasis(intel_dp->link_status, lane); | |
8695b612 AC |
1120 | |
1121 | if (this_v > v) | |
1122 | v = this_v; | |
1123 | if (this_p > p) | |
1124 | p = this_p; | |
1125 | } | |
1126 | ||
1127 | if (v >= CDV_DP_VOLTAGE_MAX) | |
1128 | v = CDV_DP_VOLTAGE_MAX | DP_TRAIN_MAX_SWING_REACHED; | |
1129 | ||
1130 | if (p == DP_TRAIN_PRE_EMPHASIS_MASK) | |
1131 | p |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
1132 | ||
1133 | for (lane = 0; lane < 4; lane++) | |
1134 | intel_dp->train_set[lane] = v | p; | |
1135 | } | |
1136 | ||
1137 | ||
1138 | static uint8_t | |
37e7b184 | 1139 | cdv_intel_get_lane_status(uint8_t link_status[DP_LINK_STATUS_SIZE], |
8695b612 AC |
1140 | int lane) |
1141 | { | |
1142 | int i = DP_LANE0_1_STATUS + (lane >> 1); | |
1143 | int s = (lane & 1) * 4; | |
37e7b184 | 1144 | uint8_t l = cdv_intel_dp_link_status(link_status, i); |
8695b612 AC |
1145 | |
1146 | return (l >> s) & 0xf; | |
1147 | } | |
1148 | ||
1149 | /* Check for clock recovery is done on all channels */ | |
1150 | static bool | |
37e7b184 | 1151 | cdv_intel_clock_recovery_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], int lane_count) |
8695b612 AC |
1152 | { |
1153 | int lane; | |
1154 | uint8_t lane_status; | |
1155 | ||
1156 | for (lane = 0; lane < lane_count; lane++) { | |
37e7b184 | 1157 | lane_status = cdv_intel_get_lane_status(link_status, lane); |
8695b612 AC |
1158 | if ((lane_status & DP_LANE_CR_DONE) == 0) |
1159 | return false; | |
1160 | } | |
1161 | return true; | |
1162 | } | |
1163 | ||
1164 | /* Check to see if channel eq is done on all channels */ | |
1165 | #define CHANNEL_EQ_BITS (DP_LANE_CR_DONE|\ | |
1166 | DP_LANE_CHANNEL_EQ_DONE|\ | |
1167 | DP_LANE_SYMBOL_LOCKED) | |
1168 | static bool | |
367e4408 | 1169 | cdv_intel_channel_eq_ok(struct gma_encoder *encoder) |
8695b612 | 1170 | { |
37e7b184 | 1171 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1172 | uint8_t lane_align; |
1173 | uint8_t lane_status; | |
1174 | int lane; | |
1175 | ||
37e7b184 | 1176 | lane_align = cdv_intel_dp_link_status(intel_dp->link_status, |
8695b612 AC |
1177 | DP_LANE_ALIGN_STATUS_UPDATED); |
1178 | if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) | |
1179 | return false; | |
1180 | for (lane = 0; lane < intel_dp->lane_count; lane++) { | |
37e7b184 | 1181 | lane_status = cdv_intel_get_lane_status(intel_dp->link_status, lane); |
8695b612 AC |
1182 | if ((lane_status & CHANNEL_EQ_BITS) != CHANNEL_EQ_BITS) |
1183 | return false; | |
1184 | } | |
1185 | return true; | |
1186 | } | |
1187 | ||
1188 | static bool | |
367e4408 | 1189 | cdv_intel_dp_set_link_train(struct gma_encoder *encoder, |
8695b612 AC |
1190 | uint32_t dp_reg_value, |
1191 | uint8_t dp_train_pat) | |
1192 | { | |
1193 | ||
37e7b184 | 1194 | struct drm_device *dev = encoder->base.dev; |
8695b612 | 1195 | int ret; |
37e7b184 | 1196 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1197 | |
1198 | REG_WRITE(intel_dp->output_reg, dp_reg_value); | |
1199 | REG_READ(intel_dp->output_reg); | |
1200 | ||
37e7b184 | 1201 | ret = cdv_intel_dp_aux_native_write_1(encoder, |
8695b612 AC |
1202 | DP_TRAINING_PATTERN_SET, |
1203 | dp_train_pat); | |
1204 | ||
1205 | if (ret != 1) { | |
1206 | DRM_DEBUG_KMS("Failure in setting link pattern %x\n", | |
1207 | dp_train_pat); | |
1208 | return false; | |
1209 | } | |
1210 | ||
1211 | return true; | |
1212 | } | |
1213 | ||
1214 | ||
1215 | static bool | |
367e4408 | 1216 | cdv_intel_dplink_set_level(struct gma_encoder *encoder, |
8695b612 AC |
1217 | uint8_t dp_train_pat) |
1218 | { | |
1219 | ||
1220 | int ret; | |
37e7b184 | 1221 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 | 1222 | |
37e7b184 | 1223 | ret = cdv_intel_dp_aux_native_write(encoder, |
8695b612 AC |
1224 | DP_TRAINING_LANE0_SET, |
1225 | intel_dp->train_set, | |
1226 | intel_dp->lane_count); | |
1227 | ||
1228 | if (ret != intel_dp->lane_count) { | |
1229 | DRM_DEBUG_KMS("Failure in setting level %d, lane_cnt= %d\n", | |
1230 | intel_dp->train_set[0], intel_dp->lane_count); | |
1231 | return false; | |
1232 | } | |
1233 | return true; | |
1234 | } | |
1235 | ||
1236 | static void | |
367e4408 | 1237 | cdv_intel_dp_set_vswing_premph(struct gma_encoder *encoder, uint8_t signal_level) |
8695b612 | 1238 | { |
37e7b184 AC |
1239 | struct drm_device *dev = encoder->base.dev; |
1240 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; | |
8695b612 AC |
1241 | struct ddi_regoff *ddi_reg; |
1242 | int vswing, premph, index; | |
1243 | ||
1244 | if (intel_dp->output_reg == DP_B) | |
1245 | ddi_reg = &ddi_DP_train_table[0]; | |
1246 | else | |
1247 | ddi_reg = &ddi_DP_train_table[1]; | |
1248 | ||
1249 | vswing = (signal_level & DP_TRAIN_VOLTAGE_SWING_MASK); | |
1250 | premph = ((signal_level & DP_TRAIN_PRE_EMPHASIS_MASK)) >> | |
1251 | DP_TRAIN_PRE_EMPHASIS_SHIFT; | |
1252 | ||
1253 | if (vswing + premph > 3) | |
1254 | return; | |
1255 | #ifdef CDV_FAST_LINK_TRAIN | |
1256 | return; | |
1257 | #endif | |
1258 | DRM_DEBUG_KMS("Test2\n"); | |
1259 | //return ; | |
37e7b184 | 1260 | cdv_sb_reset(dev); |
8695b612 AC |
1261 | /* ;Swing voltage programming |
1262 | ;gfx_dpio_set_reg(0xc058, 0x0505313A) */ | |
37e7b184 | 1263 | cdv_sb_write(dev, ddi_reg->VSwing5, 0x0505313A); |
8695b612 AC |
1264 | |
1265 | /* ;gfx_dpio_set_reg(0x8154, 0x43406055) */ | |
37e7b184 | 1266 | cdv_sb_write(dev, ddi_reg->VSwing1, 0x43406055); |
8695b612 AC |
1267 | |
1268 | /* ;gfx_dpio_set_reg(0x8148, 0x55338954) | |
1269 | * The VSwing_PreEmph table is also considered based on the vswing/premp | |
1270 | */ | |
1271 | index = (vswing + premph) * 2; | |
1272 | if (premph == 1 && vswing == 1) { | |
37e7b184 | 1273 | cdv_sb_write(dev, ddi_reg->VSwing2, 0x055738954); |
8695b612 | 1274 | } else |
37e7b184 | 1275 | cdv_sb_write(dev, ddi_reg->VSwing2, dp_vswing_premph_table[index]); |
8695b612 AC |
1276 | |
1277 | /* ;gfx_dpio_set_reg(0x814c, 0x40802040) */ | |
1278 | if ((vswing + premph) == DP_TRAIN_VOLTAGE_SWING_1200) | |
37e7b184 | 1279 | cdv_sb_write(dev, ddi_reg->VSwing3, 0x70802040); |
8695b612 | 1280 | else |
37e7b184 | 1281 | cdv_sb_write(dev, ddi_reg->VSwing3, 0x40802040); |
8695b612 AC |
1282 | |
1283 | /* ;gfx_dpio_set_reg(0x8150, 0x2b405555) */ | |
37e7b184 | 1284 | /* cdv_sb_write(dev, ddi_reg->VSwing4, 0x2b405555); */ |
8695b612 AC |
1285 | |
1286 | /* ;gfx_dpio_set_reg(0x8154, 0xc3406055) */ | |
37e7b184 | 1287 | cdv_sb_write(dev, ddi_reg->VSwing1, 0xc3406055); |
8695b612 AC |
1288 | |
1289 | /* ;Pre emphasis programming | |
1290 | * ;gfx_dpio_set_reg(0xc02c, 0x1f030040) | |
1291 | */ | |
37e7b184 | 1292 | cdv_sb_write(dev, ddi_reg->PreEmph1, 0x1f030040); |
8695b612 AC |
1293 | |
1294 | /* ;gfx_dpio_set_reg(0x8124, 0x00004000) */ | |
1295 | index = 2 * premph + 1; | |
37e7b184 | 1296 | cdv_sb_write(dev, ddi_reg->PreEmph2, dp_vswing_premph_table[index]); |
8695b612 AC |
1297 | return; |
1298 | } | |
1299 | ||
1300 | ||
1301 | /* Enable corresponding port and start training pattern 1 */ | |
1302 | static void | |
367e4408 | 1303 | cdv_intel_dp_start_link_train(struct gma_encoder *encoder) |
8695b612 | 1304 | { |
37e7b184 AC |
1305 | struct drm_device *dev = encoder->base.dev; |
1306 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; | |
8695b612 AC |
1307 | int i; |
1308 | uint8_t voltage; | |
1309 | bool clock_recovery = false; | |
1310 | int tries; | |
1311 | u32 reg; | |
1312 | uint32_t DP = intel_dp->DP; | |
1313 | ||
1314 | DP |= DP_PORT_EN; | |
37e7b184 | 1315 | DP &= ~DP_LINK_TRAIN_MASK; |
8695b612 | 1316 | |
37e7b184 AC |
1317 | reg = DP; |
1318 | reg |= DP_LINK_TRAIN_PAT_1; | |
8695b612 AC |
1319 | /* Enable output, wait for it to become active */ |
1320 | REG_WRITE(intel_dp->output_reg, reg); | |
1321 | REG_READ(intel_dp->output_reg); | |
d1fa08f3 | 1322 | gma_wait_for_vblank(dev); |
8695b612 AC |
1323 | |
1324 | DRM_DEBUG_KMS("Link config\n"); | |
1325 | /* Write the link configuration data */ | |
37e7b184 | 1326 | cdv_intel_dp_aux_native_write(encoder, DP_LINK_BW_SET, |
8695b612 AC |
1327 | intel_dp->link_configuration, |
1328 | 2); | |
1329 | ||
1330 | memset(intel_dp->train_set, 0, 4); | |
1331 | voltage = 0; | |
1332 | tries = 0; | |
1333 | clock_recovery = false; | |
1334 | ||
1335 | DRM_DEBUG_KMS("Start train\n"); | |
1336 | reg = DP | DP_LINK_TRAIN_PAT_1; | |
1337 | ||
1338 | ||
1339 | for (;;) { | |
1340 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ | |
d112a816 ZY |
1341 | DRM_DEBUG_KMS("DP Link Train Set %x, Link_config %x, %x\n", |
1342 | intel_dp->train_set[0], | |
1343 | intel_dp->link_configuration[0], | |
1344 | intel_dp->link_configuration[1]); | |
8695b612 | 1345 | |
37e7b184 | 1346 | if (!cdv_intel_dp_set_link_train(encoder, reg, DP_TRAINING_PATTERN_1)) { |
8695b612 AC |
1347 | DRM_DEBUG_KMS("Failure in aux-transfer setting pattern 1\n"); |
1348 | } | |
37e7b184 | 1349 | cdv_intel_dp_set_vswing_premph(encoder, intel_dp->train_set[0]); |
8695b612 AC |
1350 | /* Set training pattern 1 */ |
1351 | ||
37e7b184 | 1352 | cdv_intel_dplink_set_level(encoder, DP_TRAINING_PATTERN_1); |
8695b612 AC |
1353 | |
1354 | udelay(200); | |
37e7b184 | 1355 | if (!cdv_intel_dp_get_link_status(encoder)) |
8695b612 AC |
1356 | break; |
1357 | ||
d112a816 ZY |
1358 | DRM_DEBUG_KMS("DP Link status %x, %x, %x, %x, %x, %x\n", |
1359 | intel_dp->link_status[0], intel_dp->link_status[1], intel_dp->link_status[2], | |
1360 | intel_dp->link_status[3], intel_dp->link_status[4], intel_dp->link_status[5]); | |
1361 | ||
37e7b184 | 1362 | if (cdv_intel_clock_recovery_ok(intel_dp->link_status, intel_dp->lane_count)) { |
8695b612 AC |
1363 | DRM_DEBUG_KMS("PT1 train is done\n"); |
1364 | clock_recovery = true; | |
1365 | break; | |
1366 | } | |
1367 | ||
1368 | /* Check to see if we've tried the max voltage */ | |
1369 | for (i = 0; i < intel_dp->lane_count; i++) | |
1370 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
1371 | break; | |
1372 | if (i == intel_dp->lane_count) | |
1373 | break; | |
1374 | ||
1375 | /* Check to see if we've tried the same voltage 5 times */ | |
1376 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { | |
1377 | ++tries; | |
1378 | if (tries == 5) | |
1379 | break; | |
1380 | } else | |
1381 | tries = 0; | |
1382 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
1383 | ||
1384 | /* Compute new intel_dp->train_set as requested by target */ | |
37e7b184 | 1385 | cdv_intel_get_adjust_train(encoder); |
8695b612 AC |
1386 | |
1387 | } | |
1388 | ||
1389 | if (!clock_recovery) { | |
1390 | DRM_DEBUG_KMS("failure in DP patter 1 training, train set %x\n", intel_dp->train_set[0]); | |
1391 | } | |
1392 | ||
1393 | intel_dp->DP = DP; | |
1394 | } | |
1395 | ||
1396 | static void | |
367e4408 | 1397 | cdv_intel_dp_complete_link_train(struct gma_encoder *encoder) |
8695b612 | 1398 | { |
37e7b184 AC |
1399 | struct drm_device *dev = encoder->base.dev; |
1400 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; | |
8695b612 AC |
1401 | bool channel_eq = false; |
1402 | int tries, cr_tries; | |
1403 | u32 reg; | |
1404 | uint32_t DP = intel_dp->DP; | |
1405 | ||
1406 | /* channel equalization */ | |
1407 | tries = 0; | |
1408 | cr_tries = 0; | |
1409 | channel_eq = false; | |
1410 | ||
1411 | DRM_DEBUG_KMS("\n"); | |
1412 | reg = DP | DP_LINK_TRAIN_PAT_2; | |
1413 | ||
1414 | for (;;) { | |
d112a816 ZY |
1415 | |
1416 | DRM_DEBUG_KMS("DP Link Train Set %x, Link_config %x, %x\n", | |
1417 | intel_dp->train_set[0], | |
1418 | intel_dp->link_configuration[0], | |
1419 | intel_dp->link_configuration[1]); | |
1420 | /* channel eq pattern */ | |
1421 | ||
37e7b184 | 1422 | if (!cdv_intel_dp_set_link_train(encoder, reg, |
8695b612 AC |
1423 | DP_TRAINING_PATTERN_2)) { |
1424 | DRM_DEBUG_KMS("Failure in aux-transfer setting pattern 2\n"); | |
1425 | } | |
1426 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ | |
1427 | ||
1428 | if (cr_tries > 5) { | |
1429 | DRM_ERROR("failed to train DP, aborting\n"); | |
37e7b184 | 1430 | cdv_intel_dp_link_down(encoder); |
8695b612 AC |
1431 | break; |
1432 | } | |
1433 | ||
37e7b184 | 1434 | cdv_intel_dp_set_vswing_premph(encoder, intel_dp->train_set[0]); |
8695b612 | 1435 | |
37e7b184 | 1436 | cdv_intel_dplink_set_level(encoder, DP_TRAINING_PATTERN_2); |
8695b612 AC |
1437 | |
1438 | udelay(1000); | |
37e7b184 | 1439 | if (!cdv_intel_dp_get_link_status(encoder)) |
8695b612 AC |
1440 | break; |
1441 | ||
d112a816 ZY |
1442 | DRM_DEBUG_KMS("DP Link status %x, %x, %x, %x, %x, %x\n", |
1443 | intel_dp->link_status[0], intel_dp->link_status[1], intel_dp->link_status[2], | |
1444 | intel_dp->link_status[3], intel_dp->link_status[4], intel_dp->link_status[5]); | |
1445 | ||
8695b612 | 1446 | /* Make sure clock is still ok */ |
37e7b184 AC |
1447 | if (!cdv_intel_clock_recovery_ok(intel_dp->link_status, intel_dp->lane_count)) { |
1448 | cdv_intel_dp_start_link_train(encoder); | |
8695b612 AC |
1449 | cr_tries++; |
1450 | continue; | |
1451 | } | |
1452 | ||
37e7b184 | 1453 | if (cdv_intel_channel_eq_ok(encoder)) { |
8695b612 AC |
1454 | DRM_DEBUG_KMS("PT2 train is done\n"); |
1455 | channel_eq = true; | |
1456 | break; | |
1457 | } | |
1458 | ||
1459 | /* Try 5 times, then try clock recovery if that fails */ | |
1460 | if (tries > 5) { | |
37e7b184 AC |
1461 | cdv_intel_dp_link_down(encoder); |
1462 | cdv_intel_dp_start_link_train(encoder); | |
8695b612 AC |
1463 | tries = 0; |
1464 | cr_tries++; | |
1465 | continue; | |
1466 | } | |
1467 | ||
1468 | /* Compute new intel_dp->train_set as requested by target */ | |
37e7b184 | 1469 | cdv_intel_get_adjust_train(encoder); |
8695b612 AC |
1470 | ++tries; |
1471 | ||
1472 | } | |
1473 | ||
1474 | reg = DP | DP_LINK_TRAIN_OFF; | |
1475 | ||
1476 | REG_WRITE(intel_dp->output_reg, reg); | |
1477 | REG_READ(intel_dp->output_reg); | |
37e7b184 | 1478 | cdv_intel_dp_aux_native_write_1(encoder, |
8695b612 AC |
1479 | DP_TRAINING_PATTERN_SET, DP_TRAINING_PATTERN_DISABLE); |
1480 | } | |
1481 | ||
1482 | static void | |
367e4408 | 1483 | cdv_intel_dp_link_down(struct gma_encoder *encoder) |
8695b612 | 1484 | { |
37e7b184 AC |
1485 | struct drm_device *dev = encoder->base.dev; |
1486 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; | |
8695b612 AC |
1487 | uint32_t DP = intel_dp->DP; |
1488 | ||
1489 | if ((REG_READ(intel_dp->output_reg) & DP_PORT_EN) == 0) | |
1490 | return; | |
1491 | ||
1492 | DRM_DEBUG_KMS("\n"); | |
1493 | ||
1494 | ||
1495 | { | |
1496 | DP &= ~DP_LINK_TRAIN_MASK; | |
1497 | REG_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); | |
1498 | } | |
1499 | REG_READ(intel_dp->output_reg); | |
1500 | ||
1501 | msleep(17); | |
1502 | ||
1503 | REG_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); | |
1504 | REG_READ(intel_dp->output_reg); | |
1505 | } | |
1506 | ||
367e4408 | 1507 | static enum drm_connector_status cdv_dp_detect(struct gma_encoder *encoder) |
8695b612 | 1508 | { |
37e7b184 | 1509 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1510 | enum drm_connector_status status; |
1511 | ||
1512 | status = connector_status_disconnected; | |
37e7b184 | 1513 | if (cdv_intel_dp_aux_native_read(encoder, 0x000, intel_dp->dpcd, |
8695b612 AC |
1514 | sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd)) |
1515 | { | |
1516 | if (intel_dp->dpcd[DP_DPCD_REV] != 0) | |
1517 | status = connector_status_connected; | |
1518 | } | |
1519 | if (status == connector_status_connected) | |
1520 | DRM_DEBUG_KMS("DPCD: Rev=%x LN_Rate=%x LN_CNT=%x LN_DOWNSP=%x\n", | |
1521 | intel_dp->dpcd[0], intel_dp->dpcd[1], | |
1522 | intel_dp->dpcd[2], intel_dp->dpcd[3]); | |
1523 | return status; | |
1524 | } | |
1525 | ||
1526 | /** | |
1527 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection. | |
1528 | * | |
1529 | * \return true if DP port is connected. | |
1530 | * \return false if DP port is disconnected. | |
1531 | */ | |
1532 | static enum drm_connector_status | |
37e7b184 | 1533 | cdv_intel_dp_detect(struct drm_connector *connector, bool force) |
8695b612 | 1534 | { |
367e4408 | 1535 | struct gma_encoder *encoder = gma_attached_encoder(connector); |
37e7b184 | 1536 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1537 | enum drm_connector_status status; |
1538 | struct edid *edid = NULL; | |
d112a816 | 1539 | int edp = is_edp(encoder); |
8695b612 AC |
1540 | |
1541 | intel_dp->has_audio = false; | |
1542 | ||
d112a816 ZY |
1543 | if (edp) |
1544 | cdv_intel_edp_panel_vdd_on(encoder); | |
37e7b184 | 1545 | status = cdv_dp_detect(encoder); |
d112a816 ZY |
1546 | if (status != connector_status_connected) { |
1547 | if (edp) | |
1548 | cdv_intel_edp_panel_vdd_off(encoder); | |
8695b612 | 1549 | return status; |
d112a816 | 1550 | } |
8695b612 AC |
1551 | |
1552 | if (intel_dp->force_audio) { | |
1553 | intel_dp->has_audio = intel_dp->force_audio > 0; | |
1554 | } else { | |
1555 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
1556 | if (edid) { | |
1557 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
8695b612 AC |
1558 | kfree(edid); |
1559 | } | |
1560 | } | |
d112a816 ZY |
1561 | if (edp) |
1562 | cdv_intel_edp_panel_vdd_off(encoder); | |
8695b612 AC |
1563 | |
1564 | return connector_status_connected; | |
1565 | } | |
1566 | ||
37e7b184 | 1567 | static int cdv_intel_dp_get_modes(struct drm_connector *connector) |
8695b612 | 1568 | { |
367e4408 | 1569 | struct gma_encoder *intel_encoder = gma_attached_encoder(connector); |
37e7b184 | 1570 | struct cdv_intel_dp *intel_dp = intel_encoder->dev_priv; |
8695b612 AC |
1571 | struct edid *edid = NULL; |
1572 | int ret = 0; | |
d112a816 | 1573 | int edp = is_edp(intel_encoder); |
8695b612 AC |
1574 | |
1575 | ||
37e7b184 | 1576 | edid = drm_get_edid(connector, &intel_dp->adapter); |
8695b612 | 1577 | if (edid) { |
37e7b184 AC |
1578 | drm_mode_connector_update_edid_property(connector, edid); |
1579 | ret = drm_add_edid_modes(connector, edid); | |
8695b612 AC |
1580 | kfree(edid); |
1581 | } | |
1582 | ||
d112a816 ZY |
1583 | if (is_edp(intel_encoder)) { |
1584 | struct drm_device *dev = connector->dev; | |
1585 | struct drm_psb_private *dev_priv = dev->dev_private; | |
1586 | ||
1587 | cdv_intel_edp_panel_vdd_off(intel_encoder); | |
1588 | if (ret) { | |
1589 | if (edp && !intel_dp->panel_fixed_mode) { | |
1590 | struct drm_display_mode *newmode; | |
1591 | list_for_each_entry(newmode, &connector->probed_modes, | |
1592 | head) { | |
1593 | if (newmode->type & DRM_MODE_TYPE_PREFERRED) { | |
1594 | intel_dp->panel_fixed_mode = | |
1595 | drm_mode_duplicate(dev, newmode); | |
1596 | break; | |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | ||
1601 | return ret; | |
1602 | } | |
1603 | if (!intel_dp->panel_fixed_mode && dev_priv->lfp_lvds_vbt_mode) { | |
1604 | intel_dp->panel_fixed_mode = | |
1605 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); | |
1606 | if (intel_dp->panel_fixed_mode) { | |
1607 | intel_dp->panel_fixed_mode->type |= | |
1608 | DRM_MODE_TYPE_PREFERRED; | |
1609 | } | |
1610 | } | |
1611 | if (intel_dp->panel_fixed_mode != NULL) { | |
1612 | struct drm_display_mode *mode; | |
1613 | mode = drm_mode_duplicate(dev, intel_dp->panel_fixed_mode); | |
1614 | drm_mode_probed_add(connector, mode); | |
1615 | return 1; | |
1616 | } | |
1617 | } | |
1618 | ||
8695b612 AC |
1619 | return ret; |
1620 | } | |
1621 | ||
1622 | static bool | |
37e7b184 | 1623 | cdv_intel_dp_detect_audio(struct drm_connector *connector) |
8695b612 | 1624 | { |
367e4408 | 1625 | struct gma_encoder *encoder = gma_attached_encoder(connector); |
37e7b184 | 1626 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1627 | struct edid *edid; |
1628 | bool has_audio = false; | |
d112a816 ZY |
1629 | int edp = is_edp(encoder); |
1630 | ||
1631 | if (edp) | |
1632 | cdv_intel_edp_panel_vdd_on(encoder); | |
8695b612 AC |
1633 | |
1634 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
1635 | if (edid) { | |
1636 | has_audio = drm_detect_monitor_audio(edid); | |
8695b612 AC |
1637 | kfree(edid); |
1638 | } | |
d112a816 ZY |
1639 | if (edp) |
1640 | cdv_intel_edp_panel_vdd_off(encoder); | |
8695b612 AC |
1641 | |
1642 | return has_audio; | |
1643 | } | |
1644 | ||
1645 | static int | |
37e7b184 | 1646 | cdv_intel_dp_set_property(struct drm_connector *connector, |
8695b612 AC |
1647 | struct drm_property *property, |
1648 | uint64_t val) | |
1649 | { | |
1650 | struct drm_psb_private *dev_priv = connector->dev->dev_private; | |
367e4408 | 1651 | struct gma_encoder *encoder = gma_attached_encoder(connector); |
37e7b184 | 1652 | struct cdv_intel_dp *intel_dp = encoder->dev_priv; |
8695b612 AC |
1653 | int ret; |
1654 | ||
a69ac9ea | 1655 | ret = drm_object_property_set_value(&connector->base, property, val); |
8695b612 AC |
1656 | if (ret) |
1657 | return ret; | |
1658 | ||
1659 | if (property == dev_priv->force_audio_property) { | |
1660 | int i = val; | |
1661 | bool has_audio; | |
1662 | ||
1663 | if (i == intel_dp->force_audio) | |
1664 | return 0; | |
1665 | ||
1666 | intel_dp->force_audio = i; | |
1667 | ||
1668 | if (i == 0) | |
37e7b184 | 1669 | has_audio = cdv_intel_dp_detect_audio(connector); |
8695b612 AC |
1670 | else |
1671 | has_audio = i > 0; | |
1672 | ||
1673 | if (has_audio == intel_dp->has_audio) | |
1674 | return 0; | |
1675 | ||
1676 | intel_dp->has_audio = has_audio; | |
1677 | goto done; | |
1678 | } | |
1679 | ||
1680 | if (property == dev_priv->broadcast_rgb_property) { | |
1681 | if (val == !!intel_dp->color_range) | |
1682 | return 0; | |
1683 | ||
1684 | intel_dp->color_range = val ? DP_COLOR_RANGE_16_235 : 0; | |
1685 | goto done; | |
1686 | } | |
1687 | ||
1688 | return -EINVAL; | |
1689 | ||
1690 | done: | |
37e7b184 AC |
1691 | if (encoder->base.crtc) { |
1692 | struct drm_crtc *crtc = encoder->base.crtc; | |
8695b612 AC |
1693 | drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1694 | crtc->x, crtc->y, | |
1695 | crtc->fb); | |
1696 | } | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | ||
1701 | static void | |
d112a816 | 1702 | cdv_intel_dp_destroy(struct drm_connector *connector) |
8695b612 | 1703 | { |
367e4408 PJ |
1704 | struct gma_encoder *gma_encoder = gma_attached_encoder(connector); |
1705 | struct cdv_intel_dp *intel_dp = gma_encoder->dev_priv; | |
8695b612 | 1706 | |
367e4408 | 1707 | if (is_edp(gma_encoder)) { |
d112a816 ZY |
1708 | /* cdv_intel_panel_destroy_backlight(connector->dev); */ |
1709 | if (intel_dp->panel_fixed_mode) { | |
1710 | kfree(intel_dp->panel_fixed_mode); | |
1711 | intel_dp->panel_fixed_mode = NULL; | |
1712 | } | |
1713 | } | |
8695b612 AC |
1714 | i2c_del_adapter(&intel_dp->adapter); |
1715 | drm_sysfs_connector_remove(connector); | |
1716 | drm_connector_cleanup(connector); | |
1717 | kfree(connector); | |
1718 | } | |
1719 | ||
37e7b184 | 1720 | static void cdv_intel_dp_encoder_destroy(struct drm_encoder *encoder) |
8695b612 AC |
1721 | { |
1722 | drm_encoder_cleanup(encoder); | |
1723 | } | |
1724 | ||
37e7b184 AC |
1725 | static const struct drm_encoder_helper_funcs cdv_intel_dp_helper_funcs = { |
1726 | .dpms = cdv_intel_dp_dpms, | |
1727 | .mode_fixup = cdv_intel_dp_mode_fixup, | |
1728 | .prepare = cdv_intel_dp_prepare, | |
1729 | .mode_set = cdv_intel_dp_mode_set, | |
1730 | .commit = cdv_intel_dp_commit, | |
8695b612 AC |
1731 | }; |
1732 | ||
37e7b184 | 1733 | static const struct drm_connector_funcs cdv_intel_dp_connector_funcs = { |
8695b612 | 1734 | .dpms = drm_helper_connector_dpms, |
37e7b184 | 1735 | .detect = cdv_intel_dp_detect, |
8695b612 | 1736 | .fill_modes = drm_helper_probe_single_connector_modes, |
37e7b184 AC |
1737 | .set_property = cdv_intel_dp_set_property, |
1738 | .destroy = cdv_intel_dp_destroy, | |
8695b612 AC |
1739 | }; |
1740 | ||
37e7b184 AC |
1741 | static const struct drm_connector_helper_funcs cdv_intel_dp_connector_helper_funcs = { |
1742 | .get_modes = cdv_intel_dp_get_modes, | |
1743 | .mode_valid = cdv_intel_dp_mode_valid, | |
c9d49590 | 1744 | .best_encoder = gma_best_encoder, |
8695b612 AC |
1745 | }; |
1746 | ||
37e7b184 AC |
1747 | static const struct drm_encoder_funcs cdv_intel_dp_enc_funcs = { |
1748 | .destroy = cdv_intel_dp_encoder_destroy, | |
8695b612 AC |
1749 | }; |
1750 | ||
1751 | ||
37e7b184 | 1752 | static void cdv_intel_dp_add_properties(struct drm_connector *connector) |
8695b612 | 1753 | { |
37e7b184 AC |
1754 | cdv_intel_attach_force_audio_property(connector); |
1755 | cdv_intel_attach_broadcast_rgb_property(connector); | |
8695b612 AC |
1756 | } |
1757 | ||
d112a816 ZY |
1758 | /* check the VBT to see whether the eDP is on DP-D port */ |
1759 | static bool cdv_intel_dpc_is_edp(struct drm_device *dev) | |
1760 | { | |
1761 | struct drm_psb_private *dev_priv = dev->dev_private; | |
1762 | struct child_device_config *p_child; | |
1763 | int i; | |
1764 | ||
1765 | if (!dev_priv->child_dev_num) | |
1766 | return false; | |
1767 | ||
1768 | for (i = 0; i < dev_priv->child_dev_num; i++) { | |
1769 | p_child = dev_priv->child_dev + i; | |
1770 | ||
1771 | if (p_child->dvo_port == PORT_IDPC && | |
1772 | p_child->device_type == DEVICE_TYPE_eDP) | |
1773 | return true; | |
1774 | } | |
1775 | return false; | |
1776 | } | |
1777 | ||
9a9f5786 ZY |
1778 | /* Cedarview display clock gating |
1779 | ||
1780 | We need this disable dot get correct behaviour while enabling | |
1781 | DP/eDP. TODO - investigate if we can turn it back to normality | |
1782 | after enabling */ | |
1783 | static void cdv_disable_intel_clock_gating(struct drm_device *dev) | |
1784 | { | |
1785 | u32 reg_value; | |
1786 | reg_value = REG_READ(DSPCLK_GATE_D); | |
1787 | ||
1788 | reg_value |= (DPUNIT_PIPEB_GATE_DISABLE | | |
1789 | DPUNIT_PIPEA_GATE_DISABLE | | |
1790 | DPCUNIT_CLOCK_GATE_DISABLE | | |
1791 | DPLSUNIT_CLOCK_GATE_DISABLE | | |
1792 | DPOUNIT_CLOCK_GATE_DISABLE | | |
1793 | DPIOUNIT_CLOCK_GATE_DISABLE); | |
1794 | ||
1795 | REG_WRITE(DSPCLK_GATE_D, reg_value); | |
1796 | ||
1797 | udelay(500); | |
1798 | } | |
1799 | ||
8695b612 | 1800 | void |
37e7b184 | 1801 | cdv_intel_dp_init(struct drm_device *dev, struct psb_intel_mode_device *mode_dev, int output_reg) |
8695b612 | 1802 | { |
367e4408 | 1803 | struct gma_encoder *gma_encoder; |
a3d5d75f | 1804 | struct gma_connector *gma_connector; |
8695b612 AC |
1805 | struct drm_connector *connector; |
1806 | struct drm_encoder *encoder; | |
37e7b184 | 1807 | struct cdv_intel_dp *intel_dp; |
8695b612 | 1808 | const char *name = NULL; |
d112a816 | 1809 | int type = DRM_MODE_CONNECTOR_DisplayPort; |
8695b612 | 1810 | |
367e4408 PJ |
1811 | gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); |
1812 | if (!gma_encoder) | |
8695b612 | 1813 | return; |
a3d5d75f PJ |
1814 | gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL); |
1815 | if (!gma_connector) | |
37e7b184 AC |
1816 | goto err_connector; |
1817 | intel_dp = kzalloc(sizeof(struct cdv_intel_dp), GFP_KERNEL); | |
1818 | if (!intel_dp) | |
1819 | goto err_priv; | |
1820 | ||
d112a816 ZY |
1821 | if ((output_reg == DP_C) && cdv_intel_dpc_is_edp(dev)) |
1822 | type = DRM_MODE_CONNECTOR_eDP; | |
1823 | ||
a3d5d75f | 1824 | connector = &gma_connector->base; |
367e4408 | 1825 | encoder = &gma_encoder->base; |
8695b612 | 1826 | |
d112a816 | 1827 | drm_connector_init(dev, connector, &cdv_intel_dp_connector_funcs, type); |
37e7b184 | 1828 | drm_encoder_init(dev, encoder, &cdv_intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS); |
8695b612 | 1829 | |
367e4408 | 1830 | gma_connector_attach_encoder(gma_connector, gma_encoder); |
d112a816 ZY |
1831 | |
1832 | if (type == DRM_MODE_CONNECTOR_DisplayPort) | |
367e4408 | 1833 | gma_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
d112a816 | 1834 | else |
367e4408 | 1835 | gma_encoder->type = INTEL_OUTPUT_EDP; |
d112a816 | 1836 | |
37e7b184 | 1837 | |
367e4408 PJ |
1838 | gma_encoder->dev_priv=intel_dp; |
1839 | intel_dp->encoder = gma_encoder; | |
8695b612 AC |
1840 | intel_dp->output_reg = output_reg; |
1841 | ||
37e7b184 AC |
1842 | drm_encoder_helper_add(encoder, &cdv_intel_dp_helper_funcs); |
1843 | drm_connector_helper_add(connector, &cdv_intel_dp_connector_helper_funcs); | |
8695b612 AC |
1844 | |
1845 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
37e7b184 AC |
1846 | connector->interlace_allowed = false; |
1847 | connector->doublescan_allowed = false; | |
8695b612 AC |
1848 | |
1849 | drm_sysfs_connector_add(connector); | |
1850 | ||
1851 | /* Set up the DDC bus. */ | |
1852 | switch (output_reg) { | |
1853 | case DP_B: | |
1854 | name = "DPDDC-B"; | |
367e4408 | 1855 | gma_encoder->ddi_select = (DP_MASK | DDI0_SELECT); |
8695b612 AC |
1856 | break; |
1857 | case DP_C: | |
1858 | name = "DPDDC-C"; | |
367e4408 | 1859 | gma_encoder->ddi_select = (DP_MASK | DDI1_SELECT); |
8695b612 AC |
1860 | break; |
1861 | } | |
1862 | ||
9a9f5786 ZY |
1863 | cdv_disable_intel_clock_gating(dev); |
1864 | ||
367e4408 | 1865 | cdv_intel_dp_i2c_init(gma_connector, gma_encoder, name); |
37e7b184 AC |
1866 | /* FIXME:fail check */ |
1867 | cdv_intel_dp_add_properties(connector); | |
d112a816 | 1868 | |
367e4408 | 1869 | if (is_edp(gma_encoder)) { |
d112a816 ZY |
1870 | int ret; |
1871 | struct edp_power_seq cur; | |
1872 | u32 pp_on, pp_off, pp_div; | |
1873 | u32 pwm_ctrl; | |
1874 | ||
1875 | pp_on = REG_READ(PP_CONTROL); | |
1876 | pp_on &= ~PANEL_UNLOCK_MASK; | |
1877 | pp_on |= PANEL_UNLOCK_REGS; | |
1878 | ||
1879 | REG_WRITE(PP_CONTROL, pp_on); | |
1880 | ||
1881 | pwm_ctrl = REG_READ(BLC_PWM_CTL2); | |
1882 | pwm_ctrl |= PWM_PIPE_B; | |
1883 | REG_WRITE(BLC_PWM_CTL2, pwm_ctrl); | |
1884 | ||
1885 | pp_on = REG_READ(PP_ON_DELAYS); | |
1886 | pp_off = REG_READ(PP_OFF_DELAYS); | |
1887 | pp_div = REG_READ(PP_DIVISOR); | |
1888 | ||
1889 | /* Pull timing values out of registers */ | |
1890 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
1891 | PANEL_POWER_UP_DELAY_SHIFT; | |
1892 | ||
1893 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
1894 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
1895 | ||
1896 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
1897 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
1898 | ||
1899 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
1900 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
1901 | ||
1902 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
1903 | PANEL_POWER_CYCLE_DELAY_SHIFT); | |
1904 | ||
1905 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
1906 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
1907 | ||
1908 | ||
1909 | intel_dp->panel_power_up_delay = cur.t1_t3 / 10; | |
1910 | intel_dp->backlight_on_delay = cur.t8 / 10; | |
1911 | intel_dp->backlight_off_delay = cur.t9 / 10; | |
1912 | intel_dp->panel_power_down_delay = cur.t10 / 10; | |
1913 | intel_dp->panel_power_cycle_delay = (cur.t11_t12 - 1) * 100; | |
1914 | ||
1915 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", | |
1916 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
1917 | intel_dp->panel_power_cycle_delay); | |
1918 | ||
1919 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
1920 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
1921 | ||
1922 | ||
367e4408 PJ |
1923 | cdv_intel_edp_panel_vdd_on(gma_encoder); |
1924 | ret = cdv_intel_dp_aux_native_read(gma_encoder, DP_DPCD_REV, | |
d112a816 ZY |
1925 | intel_dp->dpcd, |
1926 | sizeof(intel_dp->dpcd)); | |
367e4408 | 1927 | cdv_intel_edp_panel_vdd_off(gma_encoder); |
d112a816 ZY |
1928 | if (ret == 0) { |
1929 | /* if this fails, presume the device is a ghost */ | |
1930 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
1931 | cdv_intel_dp_encoder_destroy(encoder); | |
1932 | cdv_intel_dp_destroy(connector); | |
1933 | goto err_priv; | |
1934 | } else { | |
1935 | DRM_DEBUG_KMS("DPCD: Rev=%x LN_Rate=%x LN_CNT=%x LN_DOWNSP=%x\n", | |
1936 | intel_dp->dpcd[0], intel_dp->dpcd[1], | |
1937 | intel_dp->dpcd[2], intel_dp->dpcd[3]); | |
1938 | ||
1939 | } | |
1940 | /* The CDV reference driver moves pnale backlight setup into the displays that | |
1941 | have a backlight: this is a good idea and one we should probably adopt, however | |
1942 | we need to migrate all the drivers before we can do that */ | |
1943 | /*cdv_intel_panel_setup_backlight(dev); */ | |
1944 | } | |
37e7b184 | 1945 | return; |
8695b612 | 1946 | |
37e7b184 | 1947 | err_priv: |
a3d5d75f | 1948 | kfree(gma_connector); |
37e7b184 | 1949 | err_connector: |
367e4408 | 1950 | kfree(gma_encoder); |
8695b612 | 1951 | } |