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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
760285e7 DH |
31 | #include <drm/drmP.h> |
32 | #include <drm/drm_crtc.h> | |
33 | #include <drm/drm_crtc_helper.h> | |
34 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 35 | #include "intel_drv.h" |
760285e7 | 36 | #include <drm/i915_drm.h> |
a4fc5ed6 | 37 | #include "i915_drv.h" |
a4fc5ed6 | 38 | |
a4fc5ed6 KP |
39 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
40 | ||
cfcb0fc9 JB |
41 | /** |
42 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
43 | * @intel_dp: DP struct | |
44 | * | |
45 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
46 | * will return true, and false otherwise. | |
47 | */ | |
48 | static bool is_edp(struct intel_dp *intel_dp) | |
49 | { | |
da63a9f2 PZ |
50 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
51 | ||
52 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
53 | } |
54 | ||
68b4d824 ID |
55 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
56 | { | |
57 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
58 | ||
59 | return intel_dig_port->base.base.dev; | |
60 | } | |
61 | ||
df0e9248 CW |
62 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
63 | { | |
fa90ecef | 64 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
65 | } |
66 | ||
ea5b213a | 67 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
a4fc5ed6 | 68 | |
a4fc5ed6 | 69 | static int |
ea5b213a | 70 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 71 | { |
7183dc29 | 72 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
73 | |
74 | switch (max_link_bw) { | |
75 | case DP_LINK_BW_1_62: | |
76 | case DP_LINK_BW_2_7: | |
77 | break; | |
78 | default: | |
79 | max_link_bw = DP_LINK_BW_1_62; | |
80 | break; | |
81 | } | |
82 | return max_link_bw; | |
83 | } | |
84 | ||
cd9dde44 AJ |
85 | /* |
86 | * The units on the numbers in the next two are... bizarre. Examples will | |
87 | * make it clearer; this one parallels an example in the eDP spec. | |
88 | * | |
89 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
90 | * | |
91 | * 270000 * 1 * 8 / 10 == 216000 | |
92 | * | |
93 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
94 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
95 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
96 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
97 | * | |
98 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
99 | * get the result in decakilobits instead of kilobits. | |
100 | */ | |
101 | ||
a4fc5ed6 | 102 | static int |
c898261c | 103 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 104 | { |
cd9dde44 | 105 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
106 | } |
107 | ||
fe27d53e DA |
108 | static int |
109 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
110 | { | |
111 | return (max_link_clock * max_lanes * 8) / 10; | |
112 | } | |
113 | ||
a4fc5ed6 KP |
114 | static int |
115 | intel_dp_mode_valid(struct drm_connector *connector, | |
116 | struct drm_display_mode *mode) | |
117 | { | |
df0e9248 | 118 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
119 | struct intel_connector *intel_connector = to_intel_connector(connector); |
120 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
121 | int target_clock = mode->clock; |
122 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 123 | |
dd06f90e JN |
124 | if (is_edp(intel_dp) && fixed_mode) { |
125 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
126 | return MODE_PANEL; |
127 | ||
dd06f90e | 128 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 129 | return MODE_PANEL; |
03afc4a2 DV |
130 | |
131 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
132 | } |
133 | ||
36008365 DV |
134 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
135 | max_lanes = drm_dp_max_lane_count(intel_dp->dpcd); | |
136 | ||
137 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
138 | mode_rate = intel_dp_link_required(target_clock, 18); | |
139 | ||
140 | if (mode_rate > max_rate) | |
c4867936 | 141 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
142 | |
143 | if (mode->clock < 10000) | |
144 | return MODE_CLOCK_LOW; | |
145 | ||
0af78a2b DV |
146 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
147 | return MODE_H_ILLEGAL; | |
148 | ||
a4fc5ed6 KP |
149 | return MODE_OK; |
150 | } | |
151 | ||
152 | static uint32_t | |
153 | pack_aux(uint8_t *src, int src_bytes) | |
154 | { | |
155 | int i; | |
156 | uint32_t v = 0; | |
157 | ||
158 | if (src_bytes > 4) | |
159 | src_bytes = 4; | |
160 | for (i = 0; i < src_bytes; i++) | |
161 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
162 | return v; | |
163 | } | |
164 | ||
165 | static void | |
166 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
167 | { | |
168 | int i; | |
169 | if (dst_bytes > 4) | |
170 | dst_bytes = 4; | |
171 | for (i = 0; i < dst_bytes; i++) | |
172 | dst[i] = src >> ((3-i) * 8); | |
173 | } | |
174 | ||
fb0f8fbf KP |
175 | /* hrawclock is 1/4 the FSB frequency */ |
176 | static int | |
177 | intel_hrawclk(struct drm_device *dev) | |
178 | { | |
179 | struct drm_i915_private *dev_priv = dev->dev_private; | |
180 | uint32_t clkcfg; | |
181 | ||
9473c8f4 VP |
182 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
183 | if (IS_VALLEYVIEW(dev)) | |
184 | return 200; | |
185 | ||
fb0f8fbf KP |
186 | clkcfg = I915_READ(CLKCFG); |
187 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
188 | case CLKCFG_FSB_400: | |
189 | return 100; | |
190 | case CLKCFG_FSB_533: | |
191 | return 133; | |
192 | case CLKCFG_FSB_667: | |
193 | return 166; | |
194 | case CLKCFG_FSB_800: | |
195 | return 200; | |
196 | case CLKCFG_FSB_1067: | |
197 | return 266; | |
198 | case CLKCFG_FSB_1333: | |
199 | return 333; | |
200 | /* these two are just a guess; one of them might be right */ | |
201 | case CLKCFG_FSB_1600: | |
202 | case CLKCFG_FSB_1600_ALT: | |
203 | return 400; | |
204 | default: | |
205 | return 133; | |
206 | } | |
207 | } | |
208 | ||
ebf33b18 KP |
209 | static bool ironlake_edp_have_panel_power(struct intel_dp *intel_dp) |
210 | { | |
30add22d | 211 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 212 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 213 | u32 pp_stat_reg; |
ebf33b18 | 214 | |
453c5420 JB |
215 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
216 | return (I915_READ(pp_stat_reg) & PP_ON) != 0; | |
ebf33b18 KP |
217 | } |
218 | ||
219 | static bool ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp) | |
220 | { | |
30add22d | 221 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 222 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 223 | u32 pp_ctrl_reg; |
ebf33b18 | 224 | |
453c5420 JB |
225 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; |
226 | return (I915_READ(pp_ctrl_reg) & EDP_FORCE_VDD) != 0; | |
ebf33b18 KP |
227 | } |
228 | ||
9b984dae KP |
229 | static void |
230 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
231 | { | |
30add22d | 232 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 233 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 234 | u32 pp_stat_reg, pp_ctrl_reg; |
ebf33b18 | 235 | |
9b984dae KP |
236 | if (!is_edp(intel_dp)) |
237 | return; | |
453c5420 JB |
238 | |
239 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; | |
240 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
241 | ||
ebf33b18 | 242 | if (!ironlake_edp_have_panel_power(intel_dp) && !ironlake_edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
243 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
244 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
453c5420 JB |
245 | I915_READ(pp_stat_reg), |
246 | I915_READ(pp_ctrl_reg)); | |
9b984dae KP |
247 | } |
248 | } | |
249 | ||
9ee32fea DV |
250 | static uint32_t |
251 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
252 | { | |
253 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
254 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 256 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
257 | uint32_t status; |
258 | bool done; | |
259 | ||
ef04f00d | 260 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 261 | if (has_aux_irq) |
b90f5176 PZ |
262 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
263 | msecs_to_jiffies(10)); | |
9ee32fea DV |
264 | else |
265 | done = wait_for_atomic(C, 10) == 0; | |
266 | if (!done) | |
267 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
268 | has_aux_irq); | |
269 | #undef C | |
270 | ||
271 | return status; | |
272 | } | |
273 | ||
a4fc5ed6 | 274 | static int |
ea5b213a | 275 | intel_dp_aux_ch(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
276 | uint8_t *send, int send_bytes, |
277 | uint8_t *recv, int recv_size) | |
278 | { | |
174edf1f PZ |
279 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
280 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 281 | struct drm_i915_private *dev_priv = dev->dev_private; |
9ed35ab1 | 282 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
a4fc5ed6 | 283 | uint32_t ch_data = ch_ctl + 4; |
9ee32fea | 284 | int i, ret, recv_bytes; |
a4fc5ed6 | 285 | uint32_t status; |
fb0f8fbf | 286 | uint32_t aux_clock_divider; |
6b4e0a93 | 287 | int try, precharge; |
9ee32fea DV |
288 | bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); |
289 | ||
290 | /* dp aux is extremely sensitive to irq latency, hence request the | |
291 | * lowest possible wakeup latency and so prevent the cpu from going into | |
292 | * deep sleep states. | |
293 | */ | |
294 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
a4fc5ed6 | 295 | |
9b984dae | 296 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 | 297 | /* The clock divider is based off the hrawclk, |
fb0f8fbf KP |
298 | * and would like to run at 2MHz. So, take the |
299 | * hrawclk value and divide by 2 and use that | |
6176b8f9 JB |
300 | * |
301 | * Note that PCH attached eDP panels should use a 125MHz input | |
302 | * clock divider. | |
a4fc5ed6 | 303 | */ |
a62d0834 ID |
304 | if (IS_VALLEYVIEW(dev)) { |
305 | aux_clock_divider = 100; | |
306 | } else if (intel_dig_port->port == PORT_A) { | |
affa9354 | 307 | if (HAS_DDI(dev)) |
b2b877ff PZ |
308 | aux_clock_divider = DIV_ROUND_CLOSEST( |
309 | intel_ddi_get_cdclk_freq(dev_priv), 2000); | |
9473c8f4 | 310 | else if (IS_GEN6(dev) || IS_GEN7(dev)) |
1a2eb460 | 311 | aux_clock_divider = 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 ZW |
312 | else |
313 | aux_clock_divider = 225; /* eDP input clock at 450Mhz */ | |
2c55c336 JN |
314 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
315 | /* Workaround for non-ULT HSW */ | |
316 | aux_clock_divider = 74; | |
317 | } else if (HAS_PCH_SPLIT(dev)) { | |
6b3ec1c9 | 318 | aux_clock_divider = DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 319 | } else { |
5eb08b69 | 320 | aux_clock_divider = intel_hrawclk(dev) / 2; |
2c55c336 | 321 | } |
5eb08b69 | 322 | |
6b4e0a93 DV |
323 | if (IS_GEN6(dev)) |
324 | precharge = 3; | |
325 | else | |
326 | precharge = 5; | |
327 | ||
11bee43e JB |
328 | /* Try to wait for any previous AUX channel activity */ |
329 | for (try = 0; try < 3; try++) { | |
ef04f00d | 330 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
331 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
332 | break; | |
333 | msleep(1); | |
334 | } | |
335 | ||
336 | if (try == 3) { | |
337 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
338 | I915_READ(ch_ctl)); | |
9ee32fea DV |
339 | ret = -EBUSY; |
340 | goto out; | |
4f7f7b7e CW |
341 | } |
342 | ||
fb0f8fbf KP |
343 | /* Must try at least 3 times according to DP spec */ |
344 | for (try = 0; try < 5; try++) { | |
345 | /* Load the send data into the aux channel data registers */ | |
4f7f7b7e CW |
346 | for (i = 0; i < send_bytes; i += 4) |
347 | I915_WRITE(ch_data + i, | |
348 | pack_aux(send + i, send_bytes - i)); | |
0206e353 | 349 | |
fb0f8fbf | 350 | /* Send the command and wait for it to complete */ |
4f7f7b7e CW |
351 | I915_WRITE(ch_ctl, |
352 | DP_AUX_CH_CTL_SEND_BUSY | | |
9ee32fea | 353 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
4f7f7b7e CW |
354 | DP_AUX_CH_CTL_TIME_OUT_400us | |
355 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
356 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
357 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | | |
358 | DP_AUX_CH_CTL_DONE | | |
359 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
360 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
9ee32fea DV |
361 | |
362 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
0206e353 | 363 | |
fb0f8fbf | 364 | /* Clear done status and any errors */ |
4f7f7b7e CW |
365 | I915_WRITE(ch_ctl, |
366 | status | | |
367 | DP_AUX_CH_CTL_DONE | | |
368 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
369 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
d7e96fea AJ |
370 | |
371 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
372 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
373 | continue; | |
4f7f7b7e | 374 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
375 | break; |
376 | } | |
377 | ||
a4fc5ed6 | 378 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 379 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
380 | ret = -EBUSY; |
381 | goto out; | |
a4fc5ed6 KP |
382 | } |
383 | ||
384 | /* Check for timeout or receive error. | |
385 | * Timeouts occur when the sink is not connected | |
386 | */ | |
a5b3da54 | 387 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 388 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
389 | ret = -EIO; |
390 | goto out; | |
a5b3da54 | 391 | } |
1ae8c0a5 KP |
392 | |
393 | /* Timeouts occur when the device isn't connected, so they're | |
394 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 395 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 396 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
397 | ret = -ETIMEDOUT; |
398 | goto out; | |
a4fc5ed6 KP |
399 | } |
400 | ||
401 | /* Unload any bytes sent back from the other side */ | |
402 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
403 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
404 | if (recv_bytes > recv_size) |
405 | recv_bytes = recv_size; | |
0206e353 | 406 | |
4f7f7b7e CW |
407 | for (i = 0; i < recv_bytes; i += 4) |
408 | unpack_aux(I915_READ(ch_data + i), | |
409 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 410 | |
9ee32fea DV |
411 | ret = recv_bytes; |
412 | out: | |
413 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
414 | ||
415 | return ret; | |
a4fc5ed6 KP |
416 | } |
417 | ||
418 | /* Write data to the aux channel in native mode */ | |
419 | static int | |
ea5b213a | 420 | intel_dp_aux_native_write(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
421 | uint16_t address, uint8_t *send, int send_bytes) |
422 | { | |
423 | int ret; | |
424 | uint8_t msg[20]; | |
425 | int msg_bytes; | |
426 | uint8_t ack; | |
427 | ||
9b984dae | 428 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
429 | if (send_bytes > 16) |
430 | return -1; | |
431 | msg[0] = AUX_NATIVE_WRITE << 4; | |
432 | msg[1] = address >> 8; | |
eebc863e | 433 | msg[2] = address & 0xff; |
a4fc5ed6 KP |
434 | msg[3] = send_bytes - 1; |
435 | memcpy(&msg[4], send, send_bytes); | |
436 | msg_bytes = send_bytes + 4; | |
437 | for (;;) { | |
ea5b213a | 438 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1); |
a4fc5ed6 KP |
439 | if (ret < 0) |
440 | return ret; | |
441 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
442 | break; | |
443 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
444 | udelay(100); | |
445 | else | |
a5b3da54 | 446 | return -EIO; |
a4fc5ed6 KP |
447 | } |
448 | return send_bytes; | |
449 | } | |
450 | ||
451 | /* Write a single byte to the aux channel in native mode */ | |
452 | static int | |
ea5b213a | 453 | intel_dp_aux_native_write_1(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
454 | uint16_t address, uint8_t byte) |
455 | { | |
ea5b213a | 456 | return intel_dp_aux_native_write(intel_dp, address, &byte, 1); |
a4fc5ed6 KP |
457 | } |
458 | ||
459 | /* read bytes from a native aux channel */ | |
460 | static int | |
ea5b213a | 461 | intel_dp_aux_native_read(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
462 | uint16_t address, uint8_t *recv, int recv_bytes) |
463 | { | |
464 | uint8_t msg[4]; | |
465 | int msg_bytes; | |
466 | uint8_t reply[20]; | |
467 | int reply_bytes; | |
468 | uint8_t ack; | |
469 | int ret; | |
470 | ||
9b984dae | 471 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
472 | msg[0] = AUX_NATIVE_READ << 4; |
473 | msg[1] = address >> 8; | |
474 | msg[2] = address & 0xff; | |
475 | msg[3] = recv_bytes - 1; | |
476 | ||
477 | msg_bytes = 4; | |
478 | reply_bytes = recv_bytes + 1; | |
479 | ||
480 | for (;;) { | |
ea5b213a | 481 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, |
a4fc5ed6 | 482 | reply, reply_bytes); |
a5b3da54 KP |
483 | if (ret == 0) |
484 | return -EPROTO; | |
485 | if (ret < 0) | |
a4fc5ed6 KP |
486 | return ret; |
487 | ack = reply[0]; | |
488 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
489 | memcpy(recv, reply + 1, ret - 1); | |
490 | return ret - 1; | |
491 | } | |
492 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
493 | udelay(100); | |
494 | else | |
a5b3da54 | 495 | return -EIO; |
a4fc5ed6 KP |
496 | } |
497 | } | |
498 | ||
499 | static int | |
ab2c0672 DA |
500 | intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
501 | uint8_t write_byte, uint8_t *read_byte) | |
a4fc5ed6 | 502 | { |
ab2c0672 | 503 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
ea5b213a CW |
504 | struct intel_dp *intel_dp = container_of(adapter, |
505 | struct intel_dp, | |
506 | adapter); | |
ab2c0672 DA |
507 | uint16_t address = algo_data->address; |
508 | uint8_t msg[5]; | |
509 | uint8_t reply[2]; | |
8316f337 | 510 | unsigned retry; |
ab2c0672 DA |
511 | int msg_bytes; |
512 | int reply_bytes; | |
513 | int ret; | |
514 | ||
9b984dae | 515 | intel_dp_check_edp(intel_dp); |
ab2c0672 DA |
516 | /* Set up the command byte */ |
517 | if (mode & MODE_I2C_READ) | |
518 | msg[0] = AUX_I2C_READ << 4; | |
519 | else | |
520 | msg[0] = AUX_I2C_WRITE << 4; | |
521 | ||
522 | if (!(mode & MODE_I2C_STOP)) | |
523 | msg[0] |= AUX_I2C_MOT << 4; | |
a4fc5ed6 | 524 | |
ab2c0672 DA |
525 | msg[1] = address >> 8; |
526 | msg[2] = address; | |
527 | ||
528 | switch (mode) { | |
529 | case MODE_I2C_WRITE: | |
530 | msg[3] = 0; | |
531 | msg[4] = write_byte; | |
532 | msg_bytes = 5; | |
533 | reply_bytes = 1; | |
534 | break; | |
535 | case MODE_I2C_READ: | |
536 | msg[3] = 0; | |
537 | msg_bytes = 4; | |
538 | reply_bytes = 2; | |
539 | break; | |
540 | default: | |
541 | msg_bytes = 3; | |
542 | reply_bytes = 1; | |
543 | break; | |
544 | } | |
545 | ||
8316f337 DF |
546 | for (retry = 0; retry < 5; retry++) { |
547 | ret = intel_dp_aux_ch(intel_dp, | |
548 | msg, msg_bytes, | |
549 | reply, reply_bytes); | |
ab2c0672 | 550 | if (ret < 0) { |
3ff99164 | 551 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); |
ab2c0672 DA |
552 | return ret; |
553 | } | |
8316f337 DF |
554 | |
555 | switch (reply[0] & AUX_NATIVE_REPLY_MASK) { | |
556 | case AUX_NATIVE_REPLY_ACK: | |
557 | /* I2C-over-AUX Reply field is only valid | |
558 | * when paired with AUX ACK. | |
559 | */ | |
560 | break; | |
561 | case AUX_NATIVE_REPLY_NACK: | |
562 | DRM_DEBUG_KMS("aux_ch native nack\n"); | |
563 | return -EREMOTEIO; | |
564 | case AUX_NATIVE_REPLY_DEFER: | |
565 | udelay(100); | |
566 | continue; | |
567 | default: | |
568 | DRM_ERROR("aux_ch invalid native reply 0x%02x\n", | |
569 | reply[0]); | |
570 | return -EREMOTEIO; | |
571 | } | |
572 | ||
ab2c0672 DA |
573 | switch (reply[0] & AUX_I2C_REPLY_MASK) { |
574 | case AUX_I2C_REPLY_ACK: | |
575 | if (mode == MODE_I2C_READ) { | |
576 | *read_byte = reply[1]; | |
577 | } | |
578 | return reply_bytes - 1; | |
579 | case AUX_I2C_REPLY_NACK: | |
8316f337 | 580 | DRM_DEBUG_KMS("aux_i2c nack\n"); |
ab2c0672 DA |
581 | return -EREMOTEIO; |
582 | case AUX_I2C_REPLY_DEFER: | |
8316f337 | 583 | DRM_DEBUG_KMS("aux_i2c defer\n"); |
ab2c0672 DA |
584 | udelay(100); |
585 | break; | |
586 | default: | |
8316f337 | 587 | DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]); |
ab2c0672 DA |
588 | return -EREMOTEIO; |
589 | } | |
590 | } | |
8316f337 DF |
591 | |
592 | DRM_ERROR("too many retries, giving up\n"); | |
593 | return -EREMOTEIO; | |
a4fc5ed6 KP |
594 | } |
595 | ||
596 | static int | |
ea5b213a | 597 | intel_dp_i2c_init(struct intel_dp *intel_dp, |
55f78c43 | 598 | struct intel_connector *intel_connector, const char *name) |
a4fc5ed6 | 599 | { |
0b5c541b KP |
600 | int ret; |
601 | ||
d54e9d28 | 602 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
ea5b213a CW |
603 | intel_dp->algo.running = false; |
604 | intel_dp->algo.address = 0; | |
605 | intel_dp->algo.aux_ch = intel_dp_i2c_aux_ch; | |
606 | ||
0206e353 | 607 | memset(&intel_dp->adapter, '\0', sizeof(intel_dp->adapter)); |
ea5b213a CW |
608 | intel_dp->adapter.owner = THIS_MODULE; |
609 | intel_dp->adapter.class = I2C_CLASS_DDC; | |
0206e353 | 610 | strncpy(intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1); |
ea5b213a CW |
611 | intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0'; |
612 | intel_dp->adapter.algo_data = &intel_dp->algo; | |
613 | intel_dp->adapter.dev.parent = &intel_connector->base.kdev; | |
614 | ||
0b5c541b KP |
615 | ironlake_edp_panel_vdd_on(intel_dp); |
616 | ret = i2c_dp_aux_add_bus(&intel_dp->adapter); | |
bd943159 | 617 | ironlake_edp_panel_vdd_off(intel_dp, false); |
0b5c541b | 618 | return ret; |
a4fc5ed6 KP |
619 | } |
620 | ||
c6bb3538 DV |
621 | static void |
622 | intel_dp_set_clock(struct intel_encoder *encoder, | |
623 | struct intel_crtc_config *pipe_config, int link_bw) | |
624 | { | |
625 | struct drm_device *dev = encoder->base.dev; | |
626 | ||
627 | if (IS_G4X(dev)) { | |
628 | if (link_bw == DP_LINK_BW_1_62) { | |
629 | pipe_config->dpll.p1 = 2; | |
630 | pipe_config->dpll.p2 = 10; | |
631 | pipe_config->dpll.n = 2; | |
632 | pipe_config->dpll.m1 = 23; | |
633 | pipe_config->dpll.m2 = 8; | |
634 | } else { | |
635 | pipe_config->dpll.p1 = 1; | |
636 | pipe_config->dpll.p2 = 10; | |
637 | pipe_config->dpll.n = 1; | |
638 | pipe_config->dpll.m1 = 14; | |
639 | pipe_config->dpll.m2 = 2; | |
640 | } | |
641 | pipe_config->clock_set = true; | |
642 | } else if (IS_HASWELL(dev)) { | |
643 | /* Haswell has special-purpose DP DDI clocks. */ | |
644 | } else if (HAS_PCH_SPLIT(dev)) { | |
645 | if (link_bw == DP_LINK_BW_1_62) { | |
646 | pipe_config->dpll.n = 1; | |
647 | pipe_config->dpll.p1 = 2; | |
648 | pipe_config->dpll.p2 = 10; | |
649 | pipe_config->dpll.m1 = 12; | |
650 | pipe_config->dpll.m2 = 9; | |
651 | } else { | |
652 | pipe_config->dpll.n = 2; | |
653 | pipe_config->dpll.p1 = 1; | |
654 | pipe_config->dpll.p2 = 10; | |
655 | pipe_config->dpll.m1 = 14; | |
656 | pipe_config->dpll.m2 = 8; | |
657 | } | |
658 | pipe_config->clock_set = true; | |
659 | } else if (IS_VALLEYVIEW(dev)) { | |
660 | /* FIXME: Need to figure out optimized DP clocks for vlv. */ | |
661 | } | |
662 | } | |
663 | ||
00c09d70 | 664 | bool |
5bfe2ac0 DV |
665 | intel_dp_compute_config(struct intel_encoder *encoder, |
666 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 667 | { |
5bfe2ac0 | 668 | struct drm_device *dev = encoder->base.dev; |
36008365 | 669 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 670 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 671 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 672 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 673 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 674 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 675 | int lane_count, clock; |
397fe157 | 676 | int max_lane_count = drm_dp_max_lane_count(intel_dp->dpcd); |
ea5b213a | 677 | int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; |
083f9560 | 678 | int bpp, mode_rate; |
a4fc5ed6 | 679 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
36008365 | 680 | int target_clock, link_avail, link_clock; |
a4fc5ed6 | 681 | |
bc7d38a4 | 682 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
683 | pipe_config->has_pch_encoder = true; |
684 | ||
03afc4a2 DV |
685 | pipe_config->has_dp_encoder = true; |
686 | ||
dd06f90e JN |
687 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
688 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
689 | adjusted_mode); | |
2dd24552 JB |
690 | if (!HAS_PCH_SPLIT(dev)) |
691 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
692 | intel_connector->panel.fitting_mode); | |
693 | else | |
b074cec8 JB |
694 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
695 | intel_connector->panel.fitting_mode); | |
0d3a1bee | 696 | } |
36008365 DV |
697 | /* We need to take the panel's fixed mode into account. */ |
698 | target_clock = adjusted_mode->clock; | |
0d3a1bee | 699 | |
cb1793ce | 700 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
701 | return false; |
702 | ||
083f9560 DV |
703 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
704 | "max bw %02x pixel clock %iKHz\n", | |
71244653 | 705 | max_lane_count, bws[max_clock], adjusted_mode->clock); |
083f9560 | 706 | |
36008365 DV |
707 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
708 | * bpc in between. */ | |
03afc4a2 | 709 | bpp = min_t(int, 8*3, pipe_config->pipe_bpp); |
e1b73cba DV |
710 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp) |
711 | bpp = min_t(int, bpp, dev_priv->vbt.edp_bpp); | |
af13188a | 712 | |
36008365 DV |
713 | for (; bpp >= 6*3; bpp -= 2*3) { |
714 | mode_rate = intel_dp_link_required(target_clock, bpp); | |
715 | ||
716 | for (clock = 0; clock <= max_clock; clock++) { | |
717 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
718 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); | |
719 | link_avail = intel_dp_max_data_rate(link_clock, | |
720 | lane_count); | |
721 | ||
722 | if (mode_rate <= link_avail) { | |
723 | goto found; | |
724 | } | |
725 | } | |
726 | } | |
727 | } | |
c4867936 | 728 | |
36008365 | 729 | return false; |
3685a8f3 | 730 | |
36008365 | 731 | found: |
55bc60db VS |
732 | if (intel_dp->color_range_auto) { |
733 | /* | |
734 | * See: | |
735 | * CEA-861-E - 5.1 Default Encoding Parameters | |
736 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
737 | */ | |
18316c8c | 738 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
739 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
740 | else | |
741 | intel_dp->color_range = 0; | |
742 | } | |
743 | ||
3685a8f3 | 744 | if (intel_dp->color_range) |
50f3b016 | 745 | pipe_config->limited_color_range = true; |
3685a8f3 | 746 | |
36008365 DV |
747 | intel_dp->link_bw = bws[clock]; |
748 | intel_dp->lane_count = lane_count; | |
749 | adjusted_mode->clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); | |
657445fe | 750 | pipe_config->pipe_bpp = bpp; |
df92b1e6 | 751 | pipe_config->pixel_target_clock = target_clock; |
fe27d53e | 752 | |
36008365 DV |
753 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
754 | intel_dp->link_bw, intel_dp->lane_count, | |
755 | adjusted_mode->clock, bpp); | |
756 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", | |
757 | mode_rate, link_avail); | |
758 | ||
03afc4a2 DV |
759 | intel_link_compute_m_n(bpp, lane_count, |
760 | target_clock, adjusted_mode->clock, | |
761 | &pipe_config->dp_m_n); | |
a4fc5ed6 | 762 | |
c6bb3538 DV |
763 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); |
764 | ||
03afc4a2 | 765 | return true; |
a4fc5ed6 KP |
766 | } |
767 | ||
247d89f6 PZ |
768 | void intel_dp_init_link_config(struct intel_dp *intel_dp) |
769 | { | |
770 | memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); | |
771 | intel_dp->link_configuration[0] = intel_dp->link_bw; | |
772 | intel_dp->link_configuration[1] = intel_dp->lane_count; | |
773 | intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; | |
774 | /* | |
775 | * Check for DPCD version > 1.1 and enhanced framing support | |
776 | */ | |
777 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
778 | (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { | |
779 | intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
780 | } | |
781 | } | |
782 | ||
ea9b6006 DV |
783 | static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock) |
784 | { | |
785 | struct drm_device *dev = crtc->dev; | |
786 | struct drm_i915_private *dev_priv = dev->dev_private; | |
787 | u32 dpa_ctl; | |
788 | ||
789 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock); | |
790 | dpa_ctl = I915_READ(DP_A); | |
791 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
792 | ||
793 | if (clock < 200000) { | |
1ce17038 DV |
794 | /* For a long time we've carried around a ILK-DevA w/a for the |
795 | * 160MHz clock. If we're really unlucky, it's still required. | |
796 | */ | |
797 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 798 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
799 | } else { |
800 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
801 | } | |
1ce17038 | 802 | |
ea9b6006 DV |
803 | I915_WRITE(DP_A, dpa_ctl); |
804 | ||
805 | POSTING_READ(DP_A); | |
806 | udelay(500); | |
807 | } | |
808 | ||
a4fc5ed6 KP |
809 | static void |
810 | intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, | |
811 | struct drm_display_mode *adjusted_mode) | |
812 | { | |
e3421a18 | 813 | struct drm_device *dev = encoder->dev; |
417e822d | 814 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 815 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
bc7d38a4 | 816 | enum port port = dp_to_dig_port(intel_dp)->port; |
fa90ecef | 817 | struct drm_crtc *crtc = encoder->crtc; |
a4fc5ed6 KP |
818 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
819 | ||
417e822d | 820 | /* |
1a2eb460 | 821 | * There are four kinds of DP registers: |
417e822d KP |
822 | * |
823 | * IBX PCH | |
1a2eb460 KP |
824 | * SNB CPU |
825 | * IVB CPU | |
417e822d KP |
826 | * CPT PCH |
827 | * | |
828 | * IBX PCH and CPU are the same for almost everything, | |
829 | * except that the CPU DP PLL is configured in this | |
830 | * register | |
831 | * | |
832 | * CPT PCH is quite different, having many bits moved | |
833 | * to the TRANS_DP_CTL register instead. That | |
834 | * configuration happens (oddly) in ironlake_pch_enable | |
835 | */ | |
9c9e7927 | 836 | |
417e822d KP |
837 | /* Preserve the BIOS-computed detected bit. This is |
838 | * supposed to be read-only. | |
839 | */ | |
840 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 841 | |
417e822d | 842 | /* Handle DP bits in common between all three register formats */ |
417e822d | 843 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 844 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 845 | |
e0dac65e WF |
846 | if (intel_dp->has_audio) { |
847 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", | |
848 | pipe_name(intel_crtc->pipe)); | |
ea5b213a | 849 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
e0dac65e WF |
850 | intel_write_eld(encoder, adjusted_mode); |
851 | } | |
247d89f6 PZ |
852 | |
853 | intel_dp_init_link_config(intel_dp); | |
a4fc5ed6 | 854 | |
417e822d | 855 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 856 | |
bc7d38a4 | 857 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
858 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
859 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
860 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
861 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
862 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
863 | ||
864 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
865 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
866 | ||
867 | intel_dp->DP |= intel_crtc->pipe << 29; | |
868 | ||
869 | /* don't miss out required setting for eDP */ | |
1a2eb460 KP |
870 | if (adjusted_mode->clock < 200000) |
871 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; | |
872 | else | |
873 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
bc7d38a4 | 874 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 875 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 876 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
877 | |
878 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
879 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
880 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
881 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
882 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
883 | ||
884 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
885 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
886 | ||
887 | if (intel_crtc->pipe == 1) | |
888 | intel_dp->DP |= DP_PIPEB_SELECT; | |
889 | ||
bc7d38a4 | 890 | if (port == PORT_A && !IS_VALLEYVIEW(dev)) { |
417e822d | 891 | /* don't miss out required setting for eDP */ |
417e822d KP |
892 | if (adjusted_mode->clock < 200000) |
893 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; | |
894 | else | |
895 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
896 | } | |
897 | } else { | |
898 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 899 | } |
ea9b6006 | 900 | |
bc7d38a4 | 901 | if (port == PORT_A && !IS_VALLEYVIEW(dev)) |
ea9b6006 | 902 | ironlake_set_pll_edp(crtc, adjusted_mode->clock); |
a4fc5ed6 KP |
903 | } |
904 | ||
99ea7127 KP |
905 | #define IDLE_ON_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
906 | #define IDLE_ON_VALUE (PP_ON | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
907 | ||
908 | #define IDLE_OFF_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) | |
909 | #define IDLE_OFF_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
910 | ||
911 | #define IDLE_CYCLE_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) | |
912 | #define IDLE_CYCLE_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
913 | ||
914 | static void ironlake_wait_panel_status(struct intel_dp *intel_dp, | |
915 | u32 mask, | |
916 | u32 value) | |
bd943159 | 917 | { |
30add22d | 918 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 919 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
920 | u32 pp_stat_reg, pp_ctrl_reg; |
921 | ||
922 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; | |
923 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
32ce697c | 924 | |
99ea7127 | 925 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
926 | mask, value, |
927 | I915_READ(pp_stat_reg), | |
928 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 929 | |
453c5420 | 930 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 931 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
932 | I915_READ(pp_stat_reg), |
933 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 934 | } |
99ea7127 | 935 | } |
32ce697c | 936 | |
99ea7127 KP |
937 | static void ironlake_wait_panel_on(struct intel_dp *intel_dp) |
938 | { | |
939 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
940 | ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); | |
bd943159 KP |
941 | } |
942 | ||
99ea7127 KP |
943 | static void ironlake_wait_panel_off(struct intel_dp *intel_dp) |
944 | { | |
945 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
946 | ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); | |
947 | } | |
948 | ||
949 | static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp) | |
950 | { | |
951 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
952 | ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); | |
953 | } | |
954 | ||
955 | ||
832dd3c1 KP |
956 | /* Read the current pp_control value, unlocking the register if it |
957 | * is locked | |
958 | */ | |
959 | ||
453c5420 | 960 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 961 | { |
453c5420 JB |
962 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
963 | struct drm_i915_private *dev_priv = dev->dev_private; | |
964 | u32 control; | |
965 | u32 pp_ctrl_reg; | |
966 | ||
967 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
968 | control = I915_READ(pp_ctrl_reg); | |
832dd3c1 KP |
969 | |
970 | control &= ~PANEL_UNLOCK_MASK; | |
971 | control |= PANEL_UNLOCK_REGS; | |
972 | return control; | |
bd943159 KP |
973 | } |
974 | ||
82a4d9c0 | 975 | void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 976 | { |
30add22d | 977 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
978 | struct drm_i915_private *dev_priv = dev->dev_private; |
979 | u32 pp; | |
453c5420 | 980 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 981 | |
97af61f5 KP |
982 | if (!is_edp(intel_dp)) |
983 | return; | |
f01eca2e | 984 | DRM_DEBUG_KMS("Turn eDP VDD on\n"); |
5d613501 | 985 | |
bd943159 KP |
986 | WARN(intel_dp->want_panel_vdd, |
987 | "eDP VDD already requested on\n"); | |
988 | ||
989 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 990 | |
bd943159 KP |
991 | if (ironlake_edp_have_panel_vdd(intel_dp)) { |
992 | DRM_DEBUG_KMS("eDP VDD already on\n"); | |
993 | return; | |
994 | } | |
995 | ||
99ea7127 KP |
996 | if (!ironlake_edp_have_panel_power(intel_dp)) |
997 | ironlake_wait_panel_power_cycle(intel_dp); | |
998 | ||
453c5420 | 999 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1000 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1001 | |
453c5420 JB |
1002 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
1003 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1004 | ||
1005 | I915_WRITE(pp_ctrl_reg, pp); | |
1006 | POSTING_READ(pp_ctrl_reg); | |
1007 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1008 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1009 | /* |
1010 | * If the panel wasn't on, delay before accessing aux channel | |
1011 | */ | |
1012 | if (!ironlake_edp_have_panel_power(intel_dp)) { | |
bd943159 | 1013 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1014 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1015 | } |
5d613501 JB |
1016 | } |
1017 | ||
bd943159 | 1018 | static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1019 | { |
30add22d | 1020 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1021 | struct drm_i915_private *dev_priv = dev->dev_private; |
1022 | u32 pp; | |
453c5420 | 1023 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1024 | |
a0e99e68 DV |
1025 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
1026 | ||
bd943159 | 1027 | if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) { |
453c5420 | 1028 | pp = ironlake_get_pp_control(intel_dp); |
bd943159 | 1029 | pp &= ~EDP_FORCE_VDD; |
bd943159 | 1030 | |
453c5420 JB |
1031 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
1032 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1033 | ||
1034 | I915_WRITE(pp_ctrl_reg, pp); | |
1035 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1036 | |
453c5420 JB |
1037 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1038 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1039 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
99ea7127 | 1040 | msleep(intel_dp->panel_power_down_delay); |
bd943159 KP |
1041 | } |
1042 | } | |
5d613501 | 1043 | |
bd943159 KP |
1044 | static void ironlake_panel_vdd_work(struct work_struct *__work) |
1045 | { | |
1046 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1047 | struct intel_dp, panel_vdd_work); | |
30add22d | 1048 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bd943159 | 1049 | |
627f7675 | 1050 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 1051 | ironlake_panel_vdd_off_sync(intel_dp); |
627f7675 | 1052 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 KP |
1053 | } |
1054 | ||
82a4d9c0 | 1055 | void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1056 | { |
97af61f5 KP |
1057 | if (!is_edp(intel_dp)) |
1058 | return; | |
5d613501 | 1059 | |
bd943159 KP |
1060 | DRM_DEBUG_KMS("Turn eDP VDD off %d\n", intel_dp->want_panel_vdd); |
1061 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); | |
f2e8b18a | 1062 | |
bd943159 KP |
1063 | intel_dp->want_panel_vdd = false; |
1064 | ||
1065 | if (sync) { | |
1066 | ironlake_panel_vdd_off_sync(intel_dp); | |
1067 | } else { | |
1068 | /* | |
1069 | * Queue the timer to fire a long | |
1070 | * time from now (relative to the power down delay) | |
1071 | * to keep the panel power up across a sequence of operations | |
1072 | */ | |
1073 | schedule_delayed_work(&intel_dp->panel_vdd_work, | |
1074 | msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5)); | |
1075 | } | |
5d613501 JB |
1076 | } |
1077 | ||
82a4d9c0 | 1078 | void ironlake_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1079 | { |
30add22d | 1080 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1081 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1082 | u32 pp; |
453c5420 | 1083 | u32 pp_ctrl_reg; |
9934c132 | 1084 | |
97af61f5 | 1085 | if (!is_edp(intel_dp)) |
bd943159 | 1086 | return; |
99ea7127 KP |
1087 | |
1088 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1089 | ||
1090 | if (ironlake_edp_have_panel_power(intel_dp)) { | |
1091 | DRM_DEBUG_KMS("eDP power already on\n"); | |
7d639f35 | 1092 | return; |
99ea7127 | 1093 | } |
9934c132 | 1094 | |
99ea7127 | 1095 | ironlake_wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1096 | |
453c5420 | 1097 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1098 | if (IS_GEN5(dev)) { |
1099 | /* ILK workaround: disable reset around power sequence */ | |
1100 | pp &= ~PANEL_POWER_RESET; | |
1101 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1102 | POSTING_READ(PCH_PP_CONTROL); | |
1103 | } | |
37c6c9b0 | 1104 | |
1c0ae80a | 1105 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1106 | if (!IS_GEN5(dev)) |
1107 | pp |= PANEL_POWER_RESET; | |
1108 | ||
453c5420 JB |
1109 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; |
1110 | ||
1111 | I915_WRITE(pp_ctrl_reg, pp); | |
1112 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1113 | |
99ea7127 | 1114 | ironlake_wait_panel_on(intel_dp); |
9934c132 | 1115 | |
05ce1a49 KP |
1116 | if (IS_GEN5(dev)) { |
1117 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
1118 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1119 | POSTING_READ(PCH_PP_CONTROL); | |
1120 | } | |
9934c132 JB |
1121 | } |
1122 | ||
82a4d9c0 | 1123 | void ironlake_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1124 | { |
30add22d | 1125 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1126 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1127 | u32 pp; |
453c5420 | 1128 | u32 pp_ctrl_reg; |
9934c132 | 1129 | |
97af61f5 KP |
1130 | if (!is_edp(intel_dp)) |
1131 | return; | |
37c6c9b0 | 1132 | |
99ea7127 | 1133 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1134 | |
6cb49835 | 1135 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
37c6c9b0 | 1136 | |
453c5420 | 1137 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1138 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1139 | * panels get very unhappy and cease to work. */ | |
1140 | pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE); | |
453c5420 JB |
1141 | |
1142 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1143 | ||
1144 | I915_WRITE(pp_ctrl_reg, pp); | |
1145 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1146 | |
35a38556 DV |
1147 | intel_dp->want_panel_vdd = false; |
1148 | ||
99ea7127 | 1149 | ironlake_wait_panel_off(intel_dp); |
9934c132 JB |
1150 | } |
1151 | ||
d6c50ff8 | 1152 | void ironlake_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1153 | { |
da63a9f2 PZ |
1154 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1155 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 | 1156 | struct drm_i915_private *dev_priv = dev->dev_private; |
da63a9f2 | 1157 | int pipe = to_intel_crtc(intel_dig_port->base.base.crtc)->pipe; |
32f9d658 | 1158 | u32 pp; |
453c5420 | 1159 | u32 pp_ctrl_reg; |
32f9d658 | 1160 | |
f01eca2e KP |
1161 | if (!is_edp(intel_dp)) |
1162 | return; | |
1163 | ||
28c97730 | 1164 | DRM_DEBUG_KMS("\n"); |
01cb9ea6 JB |
1165 | /* |
1166 | * If we enable the backlight right away following a panel power | |
1167 | * on, we may see slight flicker as the panel syncs with the eDP | |
1168 | * link. So delay a bit to make sure the image is solid before | |
1169 | * allowing it to appear. | |
1170 | */ | |
f01eca2e | 1171 | msleep(intel_dp->backlight_on_delay); |
453c5420 | 1172 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1173 | pp |= EDP_BLC_ENABLE; |
453c5420 JB |
1174 | |
1175 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1176 | ||
1177 | I915_WRITE(pp_ctrl_reg, pp); | |
1178 | POSTING_READ(pp_ctrl_reg); | |
035aa3de DV |
1179 | |
1180 | intel_panel_enable_backlight(dev, pipe); | |
32f9d658 ZW |
1181 | } |
1182 | ||
d6c50ff8 | 1183 | void ironlake_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1184 | { |
30add22d | 1185 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1186 | struct drm_i915_private *dev_priv = dev->dev_private; |
1187 | u32 pp; | |
453c5420 | 1188 | u32 pp_ctrl_reg; |
32f9d658 | 1189 | |
f01eca2e KP |
1190 | if (!is_edp(intel_dp)) |
1191 | return; | |
1192 | ||
035aa3de DV |
1193 | intel_panel_disable_backlight(dev); |
1194 | ||
28c97730 | 1195 | DRM_DEBUG_KMS("\n"); |
453c5420 | 1196 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1197 | pp &= ~EDP_BLC_ENABLE; |
453c5420 JB |
1198 | |
1199 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1200 | ||
1201 | I915_WRITE(pp_ctrl_reg, pp); | |
1202 | POSTING_READ(pp_ctrl_reg); | |
f01eca2e | 1203 | msleep(intel_dp->backlight_off_delay); |
32f9d658 | 1204 | } |
a4fc5ed6 | 1205 | |
2bd2ad64 | 1206 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1207 | { |
da63a9f2 PZ |
1208 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1209 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1210 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1211 | struct drm_i915_private *dev_priv = dev->dev_private; |
1212 | u32 dpa_ctl; | |
1213 | ||
2bd2ad64 DV |
1214 | assert_pipe_disabled(dev_priv, |
1215 | to_intel_crtc(crtc)->pipe); | |
1216 | ||
d240f20f JB |
1217 | DRM_DEBUG_KMS("\n"); |
1218 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1219 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1220 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1221 | ||
1222 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1223 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1224 | * enable bits here to ensure that we don't enable too much. */ | |
1225 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1226 | intel_dp->DP |= DP_PLL_ENABLE; | |
1227 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1228 | POSTING_READ(DP_A); |
1229 | udelay(200); | |
d240f20f JB |
1230 | } |
1231 | ||
2bd2ad64 | 1232 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1233 | { |
da63a9f2 PZ |
1234 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1235 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1236 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1237 | struct drm_i915_private *dev_priv = dev->dev_private; |
1238 | u32 dpa_ctl; | |
1239 | ||
2bd2ad64 DV |
1240 | assert_pipe_disabled(dev_priv, |
1241 | to_intel_crtc(crtc)->pipe); | |
1242 | ||
d240f20f | 1243 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1244 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1245 | "dp pll off, should be on\n"); | |
1246 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1247 | ||
1248 | /* We can't rely on the value tracked for the DP register in | |
1249 | * intel_dp->DP because link_down must not change that (otherwise link | |
1250 | * re-training will fail. */ | |
298b0b39 | 1251 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1252 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1253 | POSTING_READ(DP_A); |
d240f20f JB |
1254 | udelay(200); |
1255 | } | |
1256 | ||
c7ad3810 | 1257 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1258 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1259 | { |
1260 | int ret, i; | |
1261 | ||
1262 | /* Should have a valid DPCD by this point */ | |
1263 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1264 | return; | |
1265 | ||
1266 | if (mode != DRM_MODE_DPMS_ON) { | |
1267 | ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER, | |
1268 | DP_SET_POWER_D3); | |
1269 | if (ret != 1) | |
1270 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1271 | } else { | |
1272 | /* | |
1273 | * When turning on, we need to retry for 1ms to give the sink | |
1274 | * time to wake up. | |
1275 | */ | |
1276 | for (i = 0; i < 3; i++) { | |
1277 | ret = intel_dp_aux_native_write_1(intel_dp, | |
1278 | DP_SET_POWER, | |
1279 | DP_SET_POWER_D0); | |
1280 | if (ret == 1) | |
1281 | break; | |
1282 | msleep(1); | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
19d8fe15 DV |
1287 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1288 | enum pipe *pipe) | |
d240f20f | 1289 | { |
19d8fe15 | 1290 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1291 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1292 | struct drm_device *dev = encoder->base.dev; |
1293 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1294 | u32 tmp = I915_READ(intel_dp->output_reg); | |
1295 | ||
1296 | if (!(tmp & DP_PORT_EN)) | |
1297 | return false; | |
1298 | ||
bc7d38a4 | 1299 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1300 | *pipe = PORT_TO_PIPE_CPT(tmp); |
bc7d38a4 | 1301 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1302 | *pipe = PORT_TO_PIPE(tmp); |
1303 | } else { | |
1304 | u32 trans_sel; | |
1305 | u32 trans_dp; | |
1306 | int i; | |
1307 | ||
1308 | switch (intel_dp->output_reg) { | |
1309 | case PCH_DP_B: | |
1310 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1311 | break; | |
1312 | case PCH_DP_C: | |
1313 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1314 | break; | |
1315 | case PCH_DP_D: | |
1316 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1317 | break; | |
1318 | default: | |
1319 | return true; | |
1320 | } | |
1321 | ||
1322 | for_each_pipe(i) { | |
1323 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1324 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1325 | *pipe = i; | |
1326 | return true; | |
1327 | } | |
1328 | } | |
19d8fe15 | 1329 | |
4a0833ec DV |
1330 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1331 | intel_dp->output_reg); | |
1332 | } | |
d240f20f | 1333 | |
2af8898b | 1334 | return true; |
19d8fe15 | 1335 | } |
d240f20f | 1336 | |
045ac3b5 JB |
1337 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1338 | struct intel_crtc_config *pipe_config) | |
1339 | { | |
1340 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
1341 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
1342 | u32 tmp, flags = 0; | |
1343 | ||
1344 | tmp = I915_READ(intel_dp->output_reg); | |
1345 | ||
1346 | if (tmp & DP_SYNC_HS_HIGH) | |
1347 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1348 | else | |
1349 | flags |= DRM_MODE_FLAG_NHSYNC; | |
1350 | ||
1351 | if (tmp & DP_SYNC_VS_HIGH) | |
1352 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1353 | else | |
1354 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1355 | ||
1356 | pipe_config->adjusted_mode.flags |= flags; | |
1357 | } | |
1358 | ||
e8cb4558 | 1359 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1360 | { |
e8cb4558 | 1361 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
1362 | enum port port = dp_to_dig_port(intel_dp)->port; |
1363 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
1364 | |
1365 | /* Make sure the panel is off before trying to change the mode. But also | |
1366 | * ensure that we have vdd while we switch off the panel. */ | |
1367 | ironlake_edp_panel_vdd_on(intel_dp); | |
21264c63 | 1368 | ironlake_edp_backlight_off(intel_dp); |
c7ad3810 | 1369 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
35a38556 | 1370 | ironlake_edp_panel_off(intel_dp); |
3739850b DV |
1371 | |
1372 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 1373 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 1374 | intel_dp_link_down(intel_dp); |
d240f20f JB |
1375 | } |
1376 | ||
2bd2ad64 | 1377 | static void intel_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1378 | { |
2bd2ad64 | 1379 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 1380 | enum port port = dp_to_dig_port(intel_dp)->port; |
b2634017 | 1381 | struct drm_device *dev = encoder->base.dev; |
2bd2ad64 | 1382 | |
982a3866 | 1383 | if (port == PORT_A || IS_VALLEYVIEW(dev)) { |
3739850b | 1384 | intel_dp_link_down(intel_dp); |
b2634017 JB |
1385 | if (!IS_VALLEYVIEW(dev)) |
1386 | ironlake_edp_pll_off(intel_dp); | |
3739850b | 1387 | } |
2bd2ad64 DV |
1388 | } |
1389 | ||
e8cb4558 | 1390 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 1391 | { |
e8cb4558 DV |
1392 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1393 | struct drm_device *dev = encoder->base.dev; | |
1394 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1395 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 1396 | |
0c33d8d7 DV |
1397 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
1398 | return; | |
5d613501 | 1399 | |
97af61f5 | 1400 | ironlake_edp_panel_vdd_on(intel_dp); |
f01eca2e | 1401 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 1402 | intel_dp_start_link_train(intel_dp); |
97af61f5 | 1403 | ironlake_edp_panel_on(intel_dp); |
bd943159 | 1404 | ironlake_edp_panel_vdd_off(intel_dp, true); |
33a34e4e | 1405 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 1406 | intel_dp_stop_link_train(intel_dp); |
f01eca2e | 1407 | ironlake_edp_backlight_on(intel_dp); |
89b667f8 JB |
1408 | |
1409 | if (IS_VALLEYVIEW(dev)) { | |
1410 | struct intel_digital_port *dport = | |
1411 | enc_to_dig_port(&encoder->base); | |
1412 | int channel = vlv_dport_to_channel(dport); | |
1413 | ||
1414 | vlv_wait_port_ready(dev_priv, channel); | |
1415 | } | |
d240f20f JB |
1416 | } |
1417 | ||
2bd2ad64 | 1418 | static void intel_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 1419 | { |
2bd2ad64 | 1420 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1421 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 1422 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 1423 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4fc5ed6 | 1424 | |
bc7d38a4 | 1425 | if (dport->port == PORT_A && !IS_VALLEYVIEW(dev)) |
2bd2ad64 | 1426 | ironlake_edp_pll_on(intel_dp); |
89b667f8 JB |
1427 | |
1428 | if (IS_VALLEYVIEW(dev)) { | |
89b667f8 JB |
1429 | struct intel_crtc *intel_crtc = |
1430 | to_intel_crtc(encoder->base.crtc); | |
1431 | int port = vlv_dport_to_channel(dport); | |
1432 | int pipe = intel_crtc->pipe; | |
1433 | u32 val; | |
1434 | ||
ae99258f | 1435 | val = vlv_dpio_read(dev_priv, DPIO_DATA_LANE_A(port)); |
89b667f8 JB |
1436 | val = 0; |
1437 | if (pipe) | |
1438 | val |= (1<<21); | |
1439 | else | |
1440 | val &= ~(1<<21); | |
1441 | val |= 0x001000c4; | |
ae99258f | 1442 | vlv_dpio_write(dev_priv, DPIO_DATA_CHANNEL(port), val); |
89b667f8 | 1443 | |
ae99258f | 1444 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF0(port), |
89b667f8 | 1445 | 0x00760018); |
ae99258f | 1446 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF8(port), |
89b667f8 JB |
1447 | 0x00400888); |
1448 | } | |
1449 | } | |
1450 | ||
1451 | static void intel_dp_pre_pll_enable(struct intel_encoder *encoder) | |
1452 | { | |
1453 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
1454 | struct drm_device *dev = encoder->base.dev; | |
1455 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1456 | int port = vlv_dport_to_channel(dport); | |
1457 | ||
1458 | if (!IS_VALLEYVIEW(dev)) | |
1459 | return; | |
1460 | ||
89b667f8 | 1461 | /* Program Tx lane resets to default */ |
ae99258f | 1462 | vlv_dpio_write(dev_priv, DPIO_PCS_TX(port), |
89b667f8 JB |
1463 | DPIO_PCS_TX_LANE2_RESET | |
1464 | DPIO_PCS_TX_LANE1_RESET); | |
ae99258f | 1465 | vlv_dpio_write(dev_priv, DPIO_PCS_CLK(port), |
89b667f8 JB |
1466 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
1467 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
1468 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
1469 | DPIO_PCS_CLK_SOFT_RESET); | |
1470 | ||
1471 | /* Fix up inter-pair skew failure */ | |
ae99258f JN |
1472 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER1(port), 0x00750f00); |
1473 | vlv_dpio_write(dev_priv, DPIO_TX_CTL(port), 0x00001500); | |
1474 | vlv_dpio_write(dev_priv, DPIO_TX_LANE(port), 0x40400000); | |
a4fc5ed6 KP |
1475 | } |
1476 | ||
1477 | /* | |
df0c237d JB |
1478 | * Native read with retry for link status and receiver capability reads for |
1479 | * cases where the sink may still be asleep. | |
a4fc5ed6 KP |
1480 | */ |
1481 | static bool | |
df0c237d JB |
1482 | intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address, |
1483 | uint8_t *recv, int recv_bytes) | |
a4fc5ed6 | 1484 | { |
61da5fab JB |
1485 | int ret, i; |
1486 | ||
df0c237d JB |
1487 | /* |
1488 | * Sinks are *supposed* to come up within 1ms from an off state, | |
1489 | * but we're also supposed to retry 3 times per the spec. | |
1490 | */ | |
61da5fab | 1491 | for (i = 0; i < 3; i++) { |
df0c237d JB |
1492 | ret = intel_dp_aux_native_read(intel_dp, address, recv, |
1493 | recv_bytes); | |
1494 | if (ret == recv_bytes) | |
61da5fab JB |
1495 | return true; |
1496 | msleep(1); | |
1497 | } | |
a4fc5ed6 | 1498 | |
61da5fab | 1499 | return false; |
a4fc5ed6 KP |
1500 | } |
1501 | ||
1502 | /* | |
1503 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
1504 | * link status information | |
1505 | */ | |
1506 | static bool | |
93f62dad | 1507 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 1508 | { |
df0c237d JB |
1509 | return intel_dp_aux_native_read_retry(intel_dp, |
1510 | DP_LANE0_1_STATUS, | |
93f62dad | 1511 | link_status, |
df0c237d | 1512 | DP_LINK_STATUS_SIZE); |
a4fc5ed6 KP |
1513 | } |
1514 | ||
a4fc5ed6 KP |
1515 | #if 0 |
1516 | static char *voltage_names[] = { | |
1517 | "0.4V", "0.6V", "0.8V", "1.2V" | |
1518 | }; | |
1519 | static char *pre_emph_names[] = { | |
1520 | "0dB", "3.5dB", "6dB", "9.5dB" | |
1521 | }; | |
1522 | static char *link_train_names[] = { | |
1523 | "pattern 1", "pattern 2", "idle", "off" | |
1524 | }; | |
1525 | #endif | |
1526 | ||
1527 | /* | |
1528 | * These are source-specific values; current Intel hardware supports | |
1529 | * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB | |
1530 | */ | |
a4fc5ed6 KP |
1531 | |
1532 | static uint8_t | |
1a2eb460 | 1533 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 1534 | { |
30add22d | 1535 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1536 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1537 | |
e2fa6fba P |
1538 | if (IS_VALLEYVIEW(dev)) |
1539 | return DP_TRAIN_VOLTAGE_SWING_1200; | |
bc7d38a4 | 1540 | else if (IS_GEN7(dev) && port == PORT_A) |
1a2eb460 | 1541 | return DP_TRAIN_VOLTAGE_SWING_800; |
bc7d38a4 | 1542 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
1a2eb460 KP |
1543 | return DP_TRAIN_VOLTAGE_SWING_1200; |
1544 | else | |
1545 | return DP_TRAIN_VOLTAGE_SWING_800; | |
1546 | } | |
1547 | ||
1548 | static uint8_t | |
1549 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
1550 | { | |
30add22d | 1551 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1552 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1553 | |
22b8bf17 | 1554 | if (HAS_DDI(dev)) { |
d6c0d722 PZ |
1555 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1556 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1557 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1558 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1559 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1560 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1561 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1562 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1563 | default: | |
1564 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1565 | } | |
e2fa6fba P |
1566 | } else if (IS_VALLEYVIEW(dev)) { |
1567 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1568 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1569 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1570 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1571 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1572 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1573 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1574 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1575 | default: | |
1576 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1577 | } | |
bc7d38a4 | 1578 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1579 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1580 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1581 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1582 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1583 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1584 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1585 | default: | |
1586 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1587 | } | |
1588 | } else { | |
1589 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1590 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1591 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1592 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1593 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1594 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1595 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1596 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1597 | default: | |
1598 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1599 | } | |
a4fc5ed6 KP |
1600 | } |
1601 | } | |
1602 | ||
e2fa6fba P |
1603 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
1604 | { | |
1605 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1606 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1607 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
1608 | unsigned long demph_reg_value, preemph_reg_value, | |
1609 | uniqtranscale_reg_value; | |
1610 | uint8_t train_set = intel_dp->train_set[0]; | |
cece5d58 | 1611 | int port = vlv_dport_to_channel(dport); |
e2fa6fba P |
1612 | |
1613 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
1614 | case DP_TRAIN_PRE_EMPHASIS_0: | |
1615 | preemph_reg_value = 0x0004000; | |
1616 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1617 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1618 | demph_reg_value = 0x2B405555; | |
1619 | uniqtranscale_reg_value = 0x552AB83A; | |
1620 | break; | |
1621 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1622 | demph_reg_value = 0x2B404040; | |
1623 | uniqtranscale_reg_value = 0x5548B83A; | |
1624 | break; | |
1625 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1626 | demph_reg_value = 0x2B245555; | |
1627 | uniqtranscale_reg_value = 0x5560B83A; | |
1628 | break; | |
1629 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1630 | demph_reg_value = 0x2B405555; | |
1631 | uniqtranscale_reg_value = 0x5598DA3A; | |
1632 | break; | |
1633 | default: | |
1634 | return 0; | |
1635 | } | |
1636 | break; | |
1637 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1638 | preemph_reg_value = 0x0002000; | |
1639 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1640 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1641 | demph_reg_value = 0x2B404040; | |
1642 | uniqtranscale_reg_value = 0x5552B83A; | |
1643 | break; | |
1644 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1645 | demph_reg_value = 0x2B404848; | |
1646 | uniqtranscale_reg_value = 0x5580B83A; | |
1647 | break; | |
1648 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1649 | demph_reg_value = 0x2B404040; | |
1650 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1651 | break; | |
1652 | default: | |
1653 | return 0; | |
1654 | } | |
1655 | break; | |
1656 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1657 | preemph_reg_value = 0x0000000; | |
1658 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1659 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1660 | demph_reg_value = 0x2B305555; | |
1661 | uniqtranscale_reg_value = 0x5570B83A; | |
1662 | break; | |
1663 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1664 | demph_reg_value = 0x2B2B4040; | |
1665 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1666 | break; | |
1667 | default: | |
1668 | return 0; | |
1669 | } | |
1670 | break; | |
1671 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
1672 | preemph_reg_value = 0x0006000; | |
1673 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1674 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1675 | demph_reg_value = 0x1B405555; | |
1676 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1677 | break; | |
1678 | default: | |
1679 | return 0; | |
1680 | } | |
1681 | break; | |
1682 | default: | |
1683 | return 0; | |
1684 | } | |
1685 | ||
ae99258f JN |
1686 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x00000000); |
1687 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL4(port), demph_reg_value); | |
1688 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL2(port), | |
e2fa6fba | 1689 | uniqtranscale_reg_value); |
ae99258f JN |
1690 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL3(port), 0x0C782040); |
1691 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER0(port), 0x00030000); | |
1692 | vlv_dpio_write(dev_priv, DPIO_PCS_CTL_OVER1(port), preemph_reg_value); | |
1693 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x80000000); | |
e2fa6fba P |
1694 | |
1695 | return 0; | |
1696 | } | |
1697 | ||
a4fc5ed6 | 1698 | static void |
93f62dad | 1699 | intel_get_adjust_train(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 KP |
1700 | { |
1701 | uint8_t v = 0; | |
1702 | uint8_t p = 0; | |
1703 | int lane; | |
1a2eb460 KP |
1704 | uint8_t voltage_max; |
1705 | uint8_t preemph_max; | |
a4fc5ed6 | 1706 | |
33a34e4e | 1707 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
1708 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
1709 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
1710 | |
1711 | if (this_v > v) | |
1712 | v = this_v; | |
1713 | if (this_p > p) | |
1714 | p = this_p; | |
1715 | } | |
1716 | ||
1a2eb460 | 1717 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
1718 | if (v >= voltage_max) |
1719 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 1720 | |
1a2eb460 KP |
1721 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
1722 | if (p >= preemph_max) | |
1723 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
1724 | |
1725 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 1726 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
1727 | } |
1728 | ||
1729 | static uint32_t | |
f0a3424e | 1730 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 1731 | { |
3cf2efb1 | 1732 | uint32_t signal_levels = 0; |
a4fc5ed6 | 1733 | |
3cf2efb1 | 1734 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
1735 | case DP_TRAIN_VOLTAGE_SWING_400: |
1736 | default: | |
1737 | signal_levels |= DP_VOLTAGE_0_4; | |
1738 | break; | |
1739 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1740 | signal_levels |= DP_VOLTAGE_0_6; | |
1741 | break; | |
1742 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1743 | signal_levels |= DP_VOLTAGE_0_8; | |
1744 | break; | |
1745 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1746 | signal_levels |= DP_VOLTAGE_1_2; | |
1747 | break; | |
1748 | } | |
3cf2efb1 | 1749 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
1750 | case DP_TRAIN_PRE_EMPHASIS_0: |
1751 | default: | |
1752 | signal_levels |= DP_PRE_EMPHASIS_0; | |
1753 | break; | |
1754 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1755 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
1756 | break; | |
1757 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1758 | signal_levels |= DP_PRE_EMPHASIS_6; | |
1759 | break; | |
1760 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
1761 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
1762 | break; | |
1763 | } | |
1764 | return signal_levels; | |
1765 | } | |
1766 | ||
e3421a18 ZW |
1767 | /* Gen6's DP voltage swing and pre-emphasis control */ |
1768 | static uint32_t | |
1769 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
1770 | { | |
3c5a62b5 YL |
1771 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
1772 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
1773 | switch (signal_levels) { | |
e3421a18 | 1774 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
1775 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
1776 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
1777 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1778 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 1779 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
1780 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
1781 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 1782 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
1783 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
1784 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 1785 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
1786 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
1787 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 1788 | default: |
3c5a62b5 YL |
1789 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
1790 | "0x%x\n", signal_levels); | |
1791 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
1792 | } |
1793 | } | |
1794 | ||
1a2eb460 KP |
1795 | /* Gen7's DP voltage swing and pre-emphasis control */ |
1796 | static uint32_t | |
1797 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
1798 | { | |
1799 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
1800 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
1801 | switch (signal_levels) { | |
1802 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
1803 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
1804 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1805 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
1806 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
1807 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
1808 | ||
1809 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
1810 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
1811 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1812 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
1813 | ||
1814 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
1815 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
1816 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1817 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
1818 | ||
1819 | default: | |
1820 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
1821 | "0x%x\n", signal_levels); | |
1822 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
1823 | } | |
1824 | } | |
1825 | ||
d6c0d722 PZ |
1826 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
1827 | static uint32_t | |
f0a3424e | 1828 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 1829 | { |
d6c0d722 PZ |
1830 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
1831 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
1832 | switch (signal_levels) { | |
1833 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
1834 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
1835 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1836 | return DDI_BUF_EMP_400MV_3_5DB_HSW; | |
1837 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
1838 | return DDI_BUF_EMP_400MV_6DB_HSW; | |
1839 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: | |
1840 | return DDI_BUF_EMP_400MV_9_5DB_HSW; | |
a4fc5ed6 | 1841 | |
d6c0d722 PZ |
1842 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
1843 | return DDI_BUF_EMP_600MV_0DB_HSW; | |
1844 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1845 | return DDI_BUF_EMP_600MV_3_5DB_HSW; | |
1846 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: | |
1847 | return DDI_BUF_EMP_600MV_6DB_HSW; | |
a4fc5ed6 | 1848 | |
d6c0d722 PZ |
1849 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
1850 | return DDI_BUF_EMP_800MV_0DB_HSW; | |
1851 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1852 | return DDI_BUF_EMP_800MV_3_5DB_HSW; | |
1853 | default: | |
1854 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
1855 | "0x%x\n", signal_levels); | |
1856 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
a4fc5ed6 | 1857 | } |
a4fc5ed6 KP |
1858 | } |
1859 | ||
f0a3424e PZ |
1860 | /* Properly updates "DP" with the correct signal levels. */ |
1861 | static void | |
1862 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
1863 | { | |
1864 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 1865 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
1866 | struct drm_device *dev = intel_dig_port->base.base.dev; |
1867 | uint32_t signal_levels, mask; | |
1868 | uint8_t train_set = intel_dp->train_set[0]; | |
1869 | ||
22b8bf17 | 1870 | if (HAS_DDI(dev)) { |
f0a3424e PZ |
1871 | signal_levels = intel_hsw_signal_levels(train_set); |
1872 | mask = DDI_BUF_EMP_MASK; | |
e2fa6fba P |
1873 | } else if (IS_VALLEYVIEW(dev)) { |
1874 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
1875 | mask = 0; | |
bc7d38a4 | 1876 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
1877 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
1878 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 1879 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
1880 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
1881 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
1882 | } else { | |
1883 | signal_levels = intel_gen4_signal_levels(train_set); | |
1884 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
1885 | } | |
1886 | ||
1887 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
1888 | ||
1889 | *DP = (*DP & ~mask) | signal_levels; | |
1890 | } | |
1891 | ||
a4fc5ed6 | 1892 | static bool |
ea5b213a | 1893 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
a4fc5ed6 | 1894 | uint32_t dp_reg_value, |
58e10eb9 | 1895 | uint8_t dp_train_pat) |
a4fc5ed6 | 1896 | { |
174edf1f PZ |
1897 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1898 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 1899 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 1900 | enum port port = intel_dig_port->port; |
a4fc5ed6 KP |
1901 | int ret; |
1902 | ||
22b8bf17 | 1903 | if (HAS_DDI(dev)) { |
3ab9c637 | 1904 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
1905 | |
1906 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
1907 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
1908 | else | |
1909 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
1910 | ||
1911 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
1912 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
1913 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
1914 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
1915 | ||
1916 | break; | |
1917 | case DP_TRAINING_PATTERN_1: | |
1918 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
1919 | break; | |
1920 | case DP_TRAINING_PATTERN_2: | |
1921 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
1922 | break; | |
1923 | case DP_TRAINING_PATTERN_3: | |
1924 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
1925 | break; | |
1926 | } | |
174edf1f | 1927 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 1928 | |
bc7d38a4 | 1929 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
47ea7542 PZ |
1930 | dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT; |
1931 | ||
1932 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
1933 | case DP_TRAINING_PATTERN_DISABLE: | |
1934 | dp_reg_value |= DP_LINK_TRAIN_OFF_CPT; | |
1935 | break; | |
1936 | case DP_TRAINING_PATTERN_1: | |
1937 | dp_reg_value |= DP_LINK_TRAIN_PAT_1_CPT; | |
1938 | break; | |
1939 | case DP_TRAINING_PATTERN_2: | |
1940 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
1941 | break; | |
1942 | case DP_TRAINING_PATTERN_3: | |
1943 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
1944 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
1945 | break; | |
1946 | } | |
1947 | ||
1948 | } else { | |
1949 | dp_reg_value &= ~DP_LINK_TRAIN_MASK; | |
1950 | ||
1951 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
1952 | case DP_TRAINING_PATTERN_DISABLE: | |
1953 | dp_reg_value |= DP_LINK_TRAIN_OFF; | |
1954 | break; | |
1955 | case DP_TRAINING_PATTERN_1: | |
1956 | dp_reg_value |= DP_LINK_TRAIN_PAT_1; | |
1957 | break; | |
1958 | case DP_TRAINING_PATTERN_2: | |
1959 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
1960 | break; | |
1961 | case DP_TRAINING_PATTERN_3: | |
1962 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
1963 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
1964 | break; | |
1965 | } | |
1966 | } | |
1967 | ||
ea5b213a CW |
1968 | I915_WRITE(intel_dp->output_reg, dp_reg_value); |
1969 | POSTING_READ(intel_dp->output_reg); | |
a4fc5ed6 | 1970 | |
ea5b213a | 1971 | intel_dp_aux_native_write_1(intel_dp, |
a4fc5ed6 KP |
1972 | DP_TRAINING_PATTERN_SET, |
1973 | dp_train_pat); | |
1974 | ||
47ea7542 PZ |
1975 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) != |
1976 | DP_TRAINING_PATTERN_DISABLE) { | |
1977 | ret = intel_dp_aux_native_write(intel_dp, | |
1978 | DP_TRAINING_LANE0_SET, | |
1979 | intel_dp->train_set, | |
1980 | intel_dp->lane_count); | |
1981 | if (ret != intel_dp->lane_count) | |
1982 | return false; | |
1983 | } | |
a4fc5ed6 KP |
1984 | |
1985 | return true; | |
1986 | } | |
1987 | ||
3ab9c637 ID |
1988 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
1989 | { | |
1990 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
1991 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
1992 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1993 | enum port port = intel_dig_port->port; | |
1994 | uint32_t val; | |
1995 | ||
1996 | if (!HAS_DDI(dev)) | |
1997 | return; | |
1998 | ||
1999 | val = I915_READ(DP_TP_CTL(port)); | |
2000 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2001 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
2002 | I915_WRITE(DP_TP_CTL(port), val); | |
2003 | ||
2004 | /* | |
2005 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
2006 | * we need to set idle transmission mode is to work around a HW issue | |
2007 | * where we enable the pipe while not in idle link-training mode. | |
2008 | * In this case there is requirement to wait for a minimum number of | |
2009 | * idle patterns to be sent. | |
2010 | */ | |
2011 | if (port == PORT_A) | |
2012 | return; | |
2013 | ||
2014 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
2015 | 1)) | |
2016 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
2017 | } | |
2018 | ||
33a34e4e | 2019 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 2020 | void |
33a34e4e | 2021 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 2022 | { |
da63a9f2 | 2023 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 2024 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
2025 | int i; |
2026 | uint8_t voltage; | |
2027 | bool clock_recovery = false; | |
cdb0e95b | 2028 | int voltage_tries, loop_tries; |
ea5b213a | 2029 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2030 | |
affa9354 | 2031 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2032 | intel_ddi_prepare_link_retrain(encoder); |
2033 | ||
3cf2efb1 CW |
2034 | /* Write the link configuration data */ |
2035 | intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, | |
2036 | intel_dp->link_configuration, | |
2037 | DP_LINK_CONFIGURATION_SIZE); | |
a4fc5ed6 KP |
2038 | |
2039 | DP |= DP_PORT_EN; | |
1a2eb460 | 2040 | |
33a34e4e | 2041 | memset(intel_dp->train_set, 0, 4); |
a4fc5ed6 | 2042 | voltage = 0xff; |
cdb0e95b KP |
2043 | voltage_tries = 0; |
2044 | loop_tries = 0; | |
a4fc5ed6 KP |
2045 | clock_recovery = false; |
2046 | for (;;) { | |
33a34e4e | 2047 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ |
93f62dad | 2048 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
f0a3424e PZ |
2049 | |
2050 | intel_dp_set_signal_levels(intel_dp, &DP); | |
a4fc5ed6 | 2051 | |
a7c9655f | 2052 | /* Set training pattern 1 */ |
47ea7542 | 2053 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2054 | DP_TRAINING_PATTERN_1 | |
2055 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 | 2056 | break; |
a4fc5ed6 | 2057 | |
a7c9655f | 2058 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
2059 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
2060 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 2061 | break; |
93f62dad | 2062 | } |
a4fc5ed6 | 2063 | |
01916270 | 2064 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 2065 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
2066 | clock_recovery = true; |
2067 | break; | |
2068 | } | |
2069 | ||
2070 | /* Check to see if we've tried the max voltage */ | |
2071 | for (i = 0; i < intel_dp->lane_count; i++) | |
2072 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 2073 | break; |
3b4f819d | 2074 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
2075 | ++loop_tries; |
2076 | if (loop_tries == 5) { | |
cdb0e95b KP |
2077 | DRM_DEBUG_KMS("too many full retries, give up\n"); |
2078 | break; | |
2079 | } | |
2080 | memset(intel_dp->train_set, 0, 4); | |
2081 | voltage_tries = 0; | |
2082 | continue; | |
2083 | } | |
a4fc5ed6 | 2084 | |
3cf2efb1 | 2085 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 2086 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 2087 | ++voltage_tries; |
b06fbda3 DV |
2088 | if (voltage_tries == 5) { |
2089 | DRM_DEBUG_KMS("too many voltage retries, give up\n"); | |
2090 | break; | |
2091 | } | |
2092 | } else | |
2093 | voltage_tries = 0; | |
2094 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 2095 | |
3cf2efb1 | 2096 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2097 | intel_get_adjust_train(intel_dp, link_status); |
a4fc5ed6 KP |
2098 | } |
2099 | ||
33a34e4e JB |
2100 | intel_dp->DP = DP; |
2101 | } | |
2102 | ||
c19b0669 | 2103 | void |
33a34e4e JB |
2104 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
2105 | { | |
33a34e4e | 2106 | bool channel_eq = false; |
37f80975 | 2107 | int tries, cr_tries; |
33a34e4e JB |
2108 | uint32_t DP = intel_dp->DP; |
2109 | ||
a4fc5ed6 KP |
2110 | /* channel equalization */ |
2111 | tries = 0; | |
37f80975 | 2112 | cr_tries = 0; |
a4fc5ed6 KP |
2113 | channel_eq = false; |
2114 | for (;;) { | |
93f62dad | 2115 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 2116 | |
37f80975 JB |
2117 | if (cr_tries > 5) { |
2118 | DRM_ERROR("failed to train DP, aborting\n"); | |
2119 | intel_dp_link_down(intel_dp); | |
2120 | break; | |
2121 | } | |
2122 | ||
f0a3424e | 2123 | intel_dp_set_signal_levels(intel_dp, &DP); |
e3421a18 | 2124 | |
a4fc5ed6 | 2125 | /* channel eq pattern */ |
47ea7542 | 2126 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2127 | DP_TRAINING_PATTERN_2 | |
2128 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 KP |
2129 | break; |
2130 | ||
a7c9655f | 2131 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
93f62dad | 2132 | if (!intel_dp_get_link_status(intel_dp, link_status)) |
a4fc5ed6 | 2133 | break; |
a4fc5ed6 | 2134 | |
37f80975 | 2135 | /* Make sure clock is still ok */ |
01916270 | 2136 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 JB |
2137 | intel_dp_start_link_train(intel_dp); |
2138 | cr_tries++; | |
2139 | continue; | |
2140 | } | |
2141 | ||
1ffdff13 | 2142 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
2143 | channel_eq = true; |
2144 | break; | |
2145 | } | |
a4fc5ed6 | 2146 | |
37f80975 JB |
2147 | /* Try 5 times, then try clock recovery if that fails */ |
2148 | if (tries > 5) { | |
2149 | intel_dp_link_down(intel_dp); | |
2150 | intel_dp_start_link_train(intel_dp); | |
2151 | tries = 0; | |
2152 | cr_tries++; | |
2153 | continue; | |
2154 | } | |
a4fc5ed6 | 2155 | |
3cf2efb1 | 2156 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2157 | intel_get_adjust_train(intel_dp, link_status); |
3cf2efb1 | 2158 | ++tries; |
869184a6 | 2159 | } |
3cf2efb1 | 2160 | |
3ab9c637 ID |
2161 | intel_dp_set_idle_link_train(intel_dp); |
2162 | ||
2163 | intel_dp->DP = DP; | |
2164 | ||
d6c0d722 | 2165 | if (channel_eq) |
07f42258 | 2166 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 2167 | |
3ab9c637 ID |
2168 | } |
2169 | ||
2170 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
2171 | { | |
2172 | intel_dp_set_link_train(intel_dp, intel_dp->DP, | |
2173 | DP_TRAINING_PATTERN_DISABLE); | |
a4fc5ed6 KP |
2174 | } |
2175 | ||
2176 | static void | |
ea5b213a | 2177 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 2178 | { |
da63a9f2 | 2179 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 2180 | enum port port = intel_dig_port->port; |
da63a9f2 | 2181 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 2182 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
2183 | struct intel_crtc *intel_crtc = |
2184 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 2185 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2186 | |
c19b0669 PZ |
2187 | /* |
2188 | * DDI code has a strict mode set sequence and we should try to respect | |
2189 | * it, otherwise we might hang the machine in many different ways. So we | |
2190 | * really should be disabling the port only on a complete crtc_disable | |
2191 | * sequence. This function is just called under two conditions on DDI | |
2192 | * code: | |
2193 | * - Link train failed while doing crtc_enable, and on this case we | |
2194 | * really should respect the mode set sequence and wait for a | |
2195 | * crtc_disable. | |
2196 | * - Someone turned the monitor off and intel_dp_check_link_status | |
2197 | * called us. We don't need to disable the whole port on this case, so | |
2198 | * when someone turns the monitor on again, | |
2199 | * intel_ddi_prepare_link_retrain will take care of redoing the link | |
2200 | * train. | |
2201 | */ | |
affa9354 | 2202 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2203 | return; |
2204 | ||
0c33d8d7 | 2205 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
2206 | return; |
2207 | ||
28c97730 | 2208 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 2209 | |
bc7d38a4 | 2210 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 2211 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 2212 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 ZW |
2213 | } else { |
2214 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 2215 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 2216 | } |
fe255d00 | 2217 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 2218 | |
ab527efc DV |
2219 | /* We don't really know why we're doing this */ |
2220 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
5eb08b69 | 2221 | |
493a7081 | 2222 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 2223 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 2224 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 2225 | |
5bddd17f EA |
2226 | /* Hardware workaround: leaving our transcoder select |
2227 | * set to transcoder B while it's off will prevent the | |
2228 | * corresponding HDMI output on transcoder A. | |
2229 | * | |
2230 | * Combine this with another hardware workaround: | |
2231 | * transcoder select bit can only be cleared while the | |
2232 | * port is enabled. | |
2233 | */ | |
2234 | DP &= ~DP_PIPEB_SELECT; | |
2235 | I915_WRITE(intel_dp->output_reg, DP); | |
2236 | ||
2237 | /* Changes to enable or select take place the vblank | |
2238 | * after being written. | |
2239 | */ | |
ff50afe9 DV |
2240 | if (WARN_ON(crtc == NULL)) { |
2241 | /* We should never try to disable a port without a crtc | |
2242 | * attached. For paranoia keep the code around for a | |
2243 | * bit. */ | |
31acbcc4 CW |
2244 | POSTING_READ(intel_dp->output_reg); |
2245 | msleep(50); | |
2246 | } else | |
ab527efc | 2247 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
2248 | } |
2249 | ||
832afda6 | 2250 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
2251 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
2252 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 2253 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
2254 | } |
2255 | ||
26d61aad KP |
2256 | static bool |
2257 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 2258 | { |
577c7a50 DL |
2259 | char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3]; |
2260 | ||
92fd8fd1 | 2261 | if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd, |
edb39244 AJ |
2262 | sizeof(intel_dp->dpcd)) == 0) |
2263 | return false; /* aux transfer failed */ | |
92fd8fd1 | 2264 | |
577c7a50 DL |
2265 | hex_dump_to_buffer(intel_dp->dpcd, sizeof(intel_dp->dpcd), |
2266 | 32, 1, dpcd_hex_dump, sizeof(dpcd_hex_dump), false); | |
2267 | DRM_DEBUG_KMS("DPCD: %s\n", dpcd_hex_dump); | |
2268 | ||
edb39244 AJ |
2269 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
2270 | return false; /* DPCD not present */ | |
2271 | ||
2272 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
2273 | DP_DWN_STRM_PORT_PRESENT)) | |
2274 | return true; /* native DP sink */ | |
2275 | ||
2276 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
2277 | return true; /* no per-port downstream info */ | |
2278 | ||
2279 | if (intel_dp_aux_native_read_retry(intel_dp, DP_DOWNSTREAM_PORT_0, | |
2280 | intel_dp->downstream_ports, | |
2281 | DP_MAX_DOWNSTREAM_PORTS) == 0) | |
2282 | return false; /* downstream port status fetch failed */ | |
2283 | ||
2284 | return true; | |
92fd8fd1 KP |
2285 | } |
2286 | ||
0d198328 AJ |
2287 | static void |
2288 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
2289 | { | |
2290 | u8 buf[3]; | |
2291 | ||
2292 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
2293 | return; | |
2294 | ||
351cfc34 DV |
2295 | ironlake_edp_panel_vdd_on(intel_dp); |
2296 | ||
0d198328 AJ |
2297 | if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3)) |
2298 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", | |
2299 | buf[0], buf[1], buf[2]); | |
2300 | ||
2301 | if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3)) | |
2302 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", | |
2303 | buf[0], buf[1], buf[2]); | |
351cfc34 DV |
2304 | |
2305 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
0d198328 AJ |
2306 | } |
2307 | ||
a60f0e38 JB |
2308 | static bool |
2309 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
2310 | { | |
2311 | int ret; | |
2312 | ||
2313 | ret = intel_dp_aux_native_read_retry(intel_dp, | |
2314 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2315 | sink_irq_vector, 1); | |
2316 | if (!ret) | |
2317 | return false; | |
2318 | ||
2319 | return true; | |
2320 | } | |
2321 | ||
2322 | static void | |
2323 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
2324 | { | |
2325 | /* NAK by default */ | |
9324cf7f | 2326 | intel_dp_aux_native_write_1(intel_dp, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
2327 | } |
2328 | ||
a4fc5ed6 KP |
2329 | /* |
2330 | * According to DP spec | |
2331 | * 5.1.2: | |
2332 | * 1. Read DPCD | |
2333 | * 2. Configure link according to Receiver Capabilities | |
2334 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
2335 | * 4. Check link status on receipt of hot-plug interrupt | |
2336 | */ | |
2337 | ||
00c09d70 | 2338 | void |
ea5b213a | 2339 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 2340 | { |
da63a9f2 | 2341 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 2342 | u8 sink_irq_vector; |
93f62dad | 2343 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 2344 | |
da63a9f2 | 2345 | if (!intel_encoder->connectors_active) |
d2b996ac | 2346 | return; |
59cd09e1 | 2347 | |
da63a9f2 | 2348 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
2349 | return; |
2350 | ||
92fd8fd1 | 2351 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 2352 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
ea5b213a | 2353 | intel_dp_link_down(intel_dp); |
a4fc5ed6 KP |
2354 | return; |
2355 | } | |
2356 | ||
92fd8fd1 | 2357 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 2358 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
2359 | intel_dp_link_down(intel_dp); |
2360 | return; | |
2361 | } | |
2362 | ||
a60f0e38 JB |
2363 | /* Try to read the source of the interrupt */ |
2364 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
2365 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
2366 | /* Clear interrupt source */ | |
2367 | intel_dp_aux_native_write_1(intel_dp, | |
2368 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2369 | sink_irq_vector); | |
2370 | ||
2371 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
2372 | intel_dp_handle_test_request(intel_dp); | |
2373 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
2374 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
2375 | } | |
2376 | ||
1ffdff13 | 2377 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 2378 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
da63a9f2 | 2379 | drm_get_encoder_name(&intel_encoder->base)); |
33a34e4e JB |
2380 | intel_dp_start_link_train(intel_dp); |
2381 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 2382 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 2383 | } |
a4fc5ed6 | 2384 | } |
a4fc5ed6 | 2385 | |
caf9ab24 | 2386 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 2387 | static enum drm_connector_status |
26d61aad | 2388 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 2389 | { |
caf9ab24 AJ |
2390 | uint8_t *dpcd = intel_dp->dpcd; |
2391 | bool hpd; | |
2392 | uint8_t type; | |
2393 | ||
2394 | if (!intel_dp_get_dpcd(intel_dp)) | |
2395 | return connector_status_disconnected; | |
2396 | ||
2397 | /* if there's no downstream port, we're done */ | |
2398 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 2399 | return connector_status_connected; |
caf9ab24 AJ |
2400 | |
2401 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
2402 | hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD); | |
2403 | if (hpd) { | |
23235177 | 2404 | uint8_t reg; |
caf9ab24 | 2405 | if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT, |
23235177 | 2406 | ®, 1)) |
caf9ab24 | 2407 | return connector_status_unknown; |
23235177 AJ |
2408 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
2409 | : connector_status_disconnected; | |
caf9ab24 AJ |
2410 | } |
2411 | ||
2412 | /* If no HPD, poke DDC gently */ | |
2413 | if (drm_probe_ddc(&intel_dp->adapter)) | |
26d61aad | 2414 | return connector_status_connected; |
caf9ab24 AJ |
2415 | |
2416 | /* Well we tried, say unknown for unreliable port types */ | |
2417 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
2418 | if (type == DP_DS_PORT_TYPE_VGA || type == DP_DS_PORT_TYPE_NON_EDID) | |
2419 | return connector_status_unknown; | |
2420 | ||
2421 | /* Anything else is out of spec, warn and ignore */ | |
2422 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 2423 | return connector_status_disconnected; |
71ba9000 AJ |
2424 | } |
2425 | ||
5eb08b69 | 2426 | static enum drm_connector_status |
a9756bb5 | 2427 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 2428 | { |
30add22d | 2429 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
2430 | struct drm_i915_private *dev_priv = dev->dev_private; |
2431 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5eb08b69 ZW |
2432 | enum drm_connector_status status; |
2433 | ||
fe16d949 CW |
2434 | /* Can't disconnect eDP, but you can close the lid... */ |
2435 | if (is_edp(intel_dp)) { | |
30add22d | 2436 | status = intel_panel_detect(dev); |
fe16d949 CW |
2437 | if (status == connector_status_unknown) |
2438 | status = connector_status_connected; | |
2439 | return status; | |
2440 | } | |
01cb9ea6 | 2441 | |
1b469639 DL |
2442 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
2443 | return connector_status_disconnected; | |
2444 | ||
26d61aad | 2445 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
2446 | } |
2447 | ||
a4fc5ed6 | 2448 | static enum drm_connector_status |
a9756bb5 | 2449 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 2450 | { |
30add22d | 2451 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 2452 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 2453 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 2454 | uint32_t bit; |
5eb08b69 | 2455 | |
35aad75f JB |
2456 | /* Can't disconnect eDP, but you can close the lid... */ |
2457 | if (is_edp(intel_dp)) { | |
2458 | enum drm_connector_status status; | |
2459 | ||
2460 | status = intel_panel_detect(dev); | |
2461 | if (status == connector_status_unknown) | |
2462 | status = connector_status_connected; | |
2463 | return status; | |
2464 | } | |
2465 | ||
34f2be46 VS |
2466 | switch (intel_dig_port->port) { |
2467 | case PORT_B: | |
26739f12 | 2468 | bit = PORTB_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2469 | break; |
34f2be46 | 2470 | case PORT_C: |
26739f12 | 2471 | bit = PORTC_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2472 | break; |
34f2be46 | 2473 | case PORT_D: |
26739f12 | 2474 | bit = PORTD_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2475 | break; |
2476 | default: | |
2477 | return connector_status_unknown; | |
2478 | } | |
2479 | ||
10f76a38 | 2480 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
2481 | return connector_status_disconnected; |
2482 | ||
26d61aad | 2483 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
2484 | } |
2485 | ||
8c241fef KP |
2486 | static struct edid * |
2487 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2488 | { | |
9cd300e0 | 2489 | struct intel_connector *intel_connector = to_intel_connector(connector); |
d6f24d0f | 2490 | |
9cd300e0 JN |
2491 | /* use cached edid if we have one */ |
2492 | if (intel_connector->edid) { | |
2493 | struct edid *edid; | |
2494 | int size; | |
2495 | ||
2496 | /* invalid edid */ | |
2497 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
2498 | return NULL; |
2499 | ||
9cd300e0 | 2500 | size = (intel_connector->edid->extensions + 1) * EDID_LENGTH; |
edbe1581 | 2501 | edid = kmemdup(intel_connector->edid, size, GFP_KERNEL); |
d6f24d0f JB |
2502 | if (!edid) |
2503 | return NULL; | |
2504 | ||
d6f24d0f JB |
2505 | return edid; |
2506 | } | |
8c241fef | 2507 | |
9cd300e0 | 2508 | return drm_get_edid(connector, adapter); |
8c241fef KP |
2509 | } |
2510 | ||
2511 | static int | |
2512 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2513 | { | |
9cd300e0 | 2514 | struct intel_connector *intel_connector = to_intel_connector(connector); |
8c241fef | 2515 | |
9cd300e0 JN |
2516 | /* use cached edid if we have one */ |
2517 | if (intel_connector->edid) { | |
2518 | /* invalid edid */ | |
2519 | if (IS_ERR(intel_connector->edid)) | |
2520 | return 0; | |
2521 | ||
2522 | return intel_connector_update_modes(connector, | |
2523 | intel_connector->edid); | |
d6f24d0f JB |
2524 | } |
2525 | ||
9cd300e0 | 2526 | return intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
2527 | } |
2528 | ||
a9756bb5 ZW |
2529 | static enum drm_connector_status |
2530 | intel_dp_detect(struct drm_connector *connector, bool force) | |
2531 | { | |
2532 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
2533 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2534 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 2535 | struct drm_device *dev = connector->dev; |
a9756bb5 ZW |
2536 | enum drm_connector_status status; |
2537 | struct edid *edid = NULL; | |
2538 | ||
2539 | intel_dp->has_audio = false; | |
2540 | ||
2541 | if (HAS_PCH_SPLIT(dev)) | |
2542 | status = ironlake_dp_detect(intel_dp); | |
2543 | else | |
2544 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 2545 | |
a9756bb5 ZW |
2546 | if (status != connector_status_connected) |
2547 | return status; | |
2548 | ||
0d198328 AJ |
2549 | intel_dp_probe_oui(intel_dp); |
2550 | ||
c3e5f67b DV |
2551 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
2552 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 2553 | } else { |
8c241fef | 2554 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
f684960e CW |
2555 | if (edid) { |
2556 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
2557 | kfree(edid); |
2558 | } | |
a9756bb5 ZW |
2559 | } |
2560 | ||
d63885da PZ |
2561 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
2562 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
a9756bb5 | 2563 | return connector_status_connected; |
a4fc5ed6 KP |
2564 | } |
2565 | ||
2566 | static int intel_dp_get_modes(struct drm_connector *connector) | |
2567 | { | |
df0e9248 | 2568 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e | 2569 | struct intel_connector *intel_connector = to_intel_connector(connector); |
fa90ecef | 2570 | struct drm_device *dev = connector->dev; |
32f9d658 | 2571 | int ret; |
a4fc5ed6 KP |
2572 | |
2573 | /* We should parse the EDID data and find out if it has an audio sink | |
2574 | */ | |
2575 | ||
8c241fef | 2576 | ret = intel_dp_get_edid_modes(connector, &intel_dp->adapter); |
f8779fda | 2577 | if (ret) |
32f9d658 ZW |
2578 | return ret; |
2579 | ||
f8779fda | 2580 | /* if eDP has no EDID, fall back to fixed mode */ |
dd06f90e | 2581 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
f8779fda | 2582 | struct drm_display_mode *mode; |
dd06f90e JN |
2583 | mode = drm_mode_duplicate(dev, |
2584 | intel_connector->panel.fixed_mode); | |
f8779fda | 2585 | if (mode) { |
32f9d658 ZW |
2586 | drm_mode_probed_add(connector, mode); |
2587 | return 1; | |
2588 | } | |
2589 | } | |
2590 | return 0; | |
a4fc5ed6 KP |
2591 | } |
2592 | ||
1aad7ac0 CW |
2593 | static bool |
2594 | intel_dp_detect_audio(struct drm_connector *connector) | |
2595 | { | |
2596 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2597 | struct edid *edid; | |
2598 | bool has_audio = false; | |
2599 | ||
8c241fef | 2600 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
1aad7ac0 CW |
2601 | if (edid) { |
2602 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
2603 | kfree(edid); |
2604 | } | |
2605 | ||
2606 | return has_audio; | |
2607 | } | |
2608 | ||
f684960e CW |
2609 | static int |
2610 | intel_dp_set_property(struct drm_connector *connector, | |
2611 | struct drm_property *property, | |
2612 | uint64_t val) | |
2613 | { | |
e953fd7b | 2614 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 2615 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
2616 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
2617 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
2618 | int ret; |
2619 | ||
662595df | 2620 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
2621 | if (ret) |
2622 | return ret; | |
2623 | ||
3f43c48d | 2624 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
2625 | int i = val; |
2626 | bool has_audio; | |
2627 | ||
2628 | if (i == intel_dp->force_audio) | |
f684960e CW |
2629 | return 0; |
2630 | ||
1aad7ac0 | 2631 | intel_dp->force_audio = i; |
f684960e | 2632 | |
c3e5f67b | 2633 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
2634 | has_audio = intel_dp_detect_audio(connector); |
2635 | else | |
c3e5f67b | 2636 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
2637 | |
2638 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
2639 | return 0; |
2640 | ||
1aad7ac0 | 2641 | intel_dp->has_audio = has_audio; |
f684960e CW |
2642 | goto done; |
2643 | } | |
2644 | ||
e953fd7b | 2645 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
2646 | bool old_auto = intel_dp->color_range_auto; |
2647 | uint32_t old_range = intel_dp->color_range; | |
2648 | ||
55bc60db VS |
2649 | switch (val) { |
2650 | case INTEL_BROADCAST_RGB_AUTO: | |
2651 | intel_dp->color_range_auto = true; | |
2652 | break; | |
2653 | case INTEL_BROADCAST_RGB_FULL: | |
2654 | intel_dp->color_range_auto = false; | |
2655 | intel_dp->color_range = 0; | |
2656 | break; | |
2657 | case INTEL_BROADCAST_RGB_LIMITED: | |
2658 | intel_dp->color_range_auto = false; | |
2659 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
2660 | break; | |
2661 | default: | |
2662 | return -EINVAL; | |
2663 | } | |
ae4edb80 DV |
2664 | |
2665 | if (old_auto == intel_dp->color_range_auto && | |
2666 | old_range == intel_dp->color_range) | |
2667 | return 0; | |
2668 | ||
e953fd7b CW |
2669 | goto done; |
2670 | } | |
2671 | ||
53b41837 YN |
2672 | if (is_edp(intel_dp) && |
2673 | property == connector->dev->mode_config.scaling_mode_property) { | |
2674 | if (val == DRM_MODE_SCALE_NONE) { | |
2675 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
2676 | return -EINVAL; | |
2677 | } | |
2678 | ||
2679 | if (intel_connector->panel.fitting_mode == val) { | |
2680 | /* the eDP scaling property is not changed */ | |
2681 | return 0; | |
2682 | } | |
2683 | intel_connector->panel.fitting_mode = val; | |
2684 | ||
2685 | goto done; | |
2686 | } | |
2687 | ||
f684960e CW |
2688 | return -EINVAL; |
2689 | ||
2690 | done: | |
c0c36b94 CW |
2691 | if (intel_encoder->base.crtc) |
2692 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
2693 | |
2694 | return 0; | |
2695 | } | |
2696 | ||
a4fc5ed6 | 2697 | static void |
0206e353 | 2698 | intel_dp_destroy(struct drm_connector *connector) |
a4fc5ed6 | 2699 | { |
be3cd5e3 | 2700 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
1d508706 | 2701 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 2702 | |
9cd300e0 JN |
2703 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
2704 | kfree(intel_connector->edid); | |
2705 | ||
dc652f90 | 2706 | if (is_edp(intel_dp)) |
1d508706 | 2707 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 2708 | |
a4fc5ed6 KP |
2709 | drm_sysfs_connector_remove(connector); |
2710 | drm_connector_cleanup(connector); | |
55f78c43 | 2711 | kfree(connector); |
a4fc5ed6 KP |
2712 | } |
2713 | ||
00c09d70 | 2714 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 2715 | { |
da63a9f2 PZ |
2716 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
2717 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
bd173813 | 2718 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
24d05927 DV |
2719 | |
2720 | i2c_del_adapter(&intel_dp->adapter); | |
2721 | drm_encoder_cleanup(encoder); | |
bd943159 KP |
2722 | if (is_edp(intel_dp)) { |
2723 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
bd173813 | 2724 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 2725 | ironlake_panel_vdd_off_sync(intel_dp); |
bd173813 | 2726 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 | 2727 | } |
da63a9f2 | 2728 | kfree(intel_dig_port); |
24d05927 DV |
2729 | } |
2730 | ||
a4fc5ed6 | 2731 | static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = { |
a4fc5ed6 | 2732 | .mode_set = intel_dp_mode_set, |
a4fc5ed6 KP |
2733 | }; |
2734 | ||
2735 | static const struct drm_connector_funcs intel_dp_connector_funcs = { | |
2bd2ad64 | 2736 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
2737 | .detect = intel_dp_detect, |
2738 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 2739 | .set_property = intel_dp_set_property, |
a4fc5ed6 KP |
2740 | .destroy = intel_dp_destroy, |
2741 | }; | |
2742 | ||
2743 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
2744 | .get_modes = intel_dp_get_modes, | |
2745 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 2746 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
2747 | }; |
2748 | ||
a4fc5ed6 | 2749 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
24d05927 | 2750 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
2751 | }; |
2752 | ||
995b6762 | 2753 | static void |
21d40d37 | 2754 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 2755 | { |
fa90ecef | 2756 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
c8110e52 | 2757 | |
885a5014 | 2758 | intel_dp_check_link_status(intel_dp); |
c8110e52 | 2759 | } |
6207937d | 2760 | |
e3421a18 ZW |
2761 | /* Return which DP Port should be selected for Transcoder DP control */ |
2762 | int | |
0206e353 | 2763 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
2764 | { |
2765 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
2766 | struct intel_encoder *intel_encoder; |
2767 | struct intel_dp *intel_dp; | |
e3421a18 | 2768 | |
fa90ecef PZ |
2769 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
2770 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 2771 | |
fa90ecef PZ |
2772 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
2773 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 2774 | return intel_dp->output_reg; |
e3421a18 | 2775 | } |
ea5b213a | 2776 | |
e3421a18 ZW |
2777 | return -1; |
2778 | } | |
2779 | ||
36e83a18 | 2780 | /* check the VBT to see whether the eDP is on DP-D port */ |
cb0953d7 | 2781 | bool intel_dpd_is_edp(struct drm_device *dev) |
36e83a18 ZY |
2782 | { |
2783 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2784 | struct child_device_config *p_child; | |
2785 | int i; | |
2786 | ||
41aa3448 | 2787 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
2788 | return false; |
2789 | ||
41aa3448 RV |
2790 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
2791 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 ZY |
2792 | |
2793 | if (p_child->dvo_port == PORT_IDPD && | |
2794 | p_child->device_type == DEVICE_TYPE_eDP) | |
2795 | return true; | |
2796 | } | |
2797 | return false; | |
2798 | } | |
2799 | ||
f684960e CW |
2800 | static void |
2801 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) | |
2802 | { | |
53b41837 YN |
2803 | struct intel_connector *intel_connector = to_intel_connector(connector); |
2804 | ||
3f43c48d | 2805 | intel_attach_force_audio_property(connector); |
e953fd7b | 2806 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 2807 | intel_dp->color_range_auto = true; |
53b41837 YN |
2808 | |
2809 | if (is_edp(intel_dp)) { | |
2810 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
2811 | drm_object_attach_property( |
2812 | &connector->base, | |
53b41837 | 2813 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
2814 | DRM_MODE_SCALE_ASPECT); |
2815 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 2816 | } |
f684960e CW |
2817 | } |
2818 | ||
67a54566 DV |
2819 | static void |
2820 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
2821 | struct intel_dp *intel_dp, |
2822 | struct edp_power_seq *out) | |
67a54566 DV |
2823 | { |
2824 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2825 | struct edp_power_seq cur, vbt, spec, final; | |
2826 | u32 pp_on, pp_off, pp_div, pp; | |
453c5420 JB |
2827 | int pp_control_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
2828 | ||
2829 | if (HAS_PCH_SPLIT(dev)) { | |
2830 | pp_control_reg = PCH_PP_CONTROL; | |
2831 | pp_on_reg = PCH_PP_ON_DELAYS; | |
2832 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
2833 | pp_div_reg = PCH_PP_DIVISOR; | |
2834 | } else { | |
2835 | pp_control_reg = PIPEA_PP_CONTROL; | |
2836 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
2837 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
2838 | pp_div_reg = PIPEA_PP_DIVISOR; | |
2839 | } | |
67a54566 DV |
2840 | |
2841 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
2842 | * the very first thing. */ | |
453c5420 JB |
2843 | pp = ironlake_get_pp_control(intel_dp); |
2844 | I915_WRITE(pp_control_reg, pp); | |
67a54566 | 2845 | |
453c5420 JB |
2846 | pp_on = I915_READ(pp_on_reg); |
2847 | pp_off = I915_READ(pp_off_reg); | |
2848 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
2849 | |
2850 | /* Pull timing values out of registers */ | |
2851 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
2852 | PANEL_POWER_UP_DELAY_SHIFT; | |
2853 | ||
2854 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
2855 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
2856 | ||
2857 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
2858 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
2859 | ||
2860 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
2861 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
2862 | ||
2863 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
2864 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
2865 | ||
2866 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
2867 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
2868 | ||
41aa3448 | 2869 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
2870 | |
2871 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
2872 | * our hw here, which are all in 100usec. */ | |
2873 | spec.t1_t3 = 210 * 10; | |
2874 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
2875 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
2876 | spec.t10 = 500 * 10; | |
2877 | /* This one is special and actually in units of 100ms, but zero | |
2878 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
2879 | * table multiplies it with 1000 to make it in units of 100usec, | |
2880 | * too. */ | |
2881 | spec.t11_t12 = (510 + 100) * 10; | |
2882 | ||
2883 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
2884 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
2885 | ||
2886 | /* Use the max of the register settings and vbt. If both are | |
2887 | * unset, fall back to the spec limits. */ | |
2888 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
2889 | spec.field : \ | |
2890 | max(cur.field, vbt.field)) | |
2891 | assign_final(t1_t3); | |
2892 | assign_final(t8); | |
2893 | assign_final(t9); | |
2894 | assign_final(t10); | |
2895 | assign_final(t11_t12); | |
2896 | #undef assign_final | |
2897 | ||
2898 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
2899 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
2900 | intel_dp->backlight_on_delay = get_delay(t8); | |
2901 | intel_dp->backlight_off_delay = get_delay(t9); | |
2902 | intel_dp->panel_power_down_delay = get_delay(t10); | |
2903 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
2904 | #undef get_delay | |
2905 | ||
f30d26e4 JN |
2906 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
2907 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
2908 | intel_dp->panel_power_cycle_delay); | |
2909 | ||
2910 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
2911 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
2912 | ||
2913 | if (out) | |
2914 | *out = final; | |
2915 | } | |
2916 | ||
2917 | static void | |
2918 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
2919 | struct intel_dp *intel_dp, | |
2920 | struct edp_power_seq *seq) | |
2921 | { | |
2922 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
2923 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
2924 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
2925 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
2926 | ||
2927 | if (HAS_PCH_SPLIT(dev)) { | |
2928 | pp_on_reg = PCH_PP_ON_DELAYS; | |
2929 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
2930 | pp_div_reg = PCH_PP_DIVISOR; | |
2931 | } else { | |
2932 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
2933 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
2934 | pp_div_reg = PIPEA_PP_DIVISOR; | |
2935 | } | |
2936 | ||
67a54566 | 2937 | /* And finally store the new values in the power sequencer. */ |
f30d26e4 JN |
2938 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
2939 | (seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT); | |
2940 | pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
2941 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); | |
67a54566 DV |
2942 | /* Compute the divisor for the pp clock, simply match the Bspec |
2943 | * formula. */ | |
453c5420 | 2944 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 2945 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
2946 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
2947 | ||
2948 | /* Haswell doesn't have any port selection bits for the panel | |
2949 | * power sequencer any more. */ | |
bc7d38a4 ID |
2950 | if (IS_VALLEYVIEW(dev)) { |
2951 | port_sel = I915_READ(pp_on_reg) & 0xc0000000; | |
2952 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { | |
2953 | if (dp_to_dig_port(intel_dp)->port == PORT_A) | |
453c5420 | 2954 | port_sel = PANEL_POWER_PORT_DP_A; |
67a54566 | 2955 | else |
453c5420 | 2956 | port_sel = PANEL_POWER_PORT_DP_D; |
67a54566 DV |
2957 | } |
2958 | ||
453c5420 JB |
2959 | pp_on |= port_sel; |
2960 | ||
2961 | I915_WRITE(pp_on_reg, pp_on); | |
2962 | I915_WRITE(pp_off_reg, pp_off); | |
2963 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 2964 | |
67a54566 | 2965 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
2966 | I915_READ(pp_on_reg), |
2967 | I915_READ(pp_off_reg), | |
2968 | I915_READ(pp_div_reg)); | |
f684960e CW |
2969 | } |
2970 | ||
a4fc5ed6 | 2971 | void |
f0fec3f2 PZ |
2972 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
2973 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 2974 | { |
f0fec3f2 PZ |
2975 | struct drm_connector *connector = &intel_connector->base; |
2976 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
2977 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
2978 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 2979 | struct drm_i915_private *dev_priv = dev->dev_private; |
f8779fda | 2980 | struct drm_display_mode *fixed_mode = NULL; |
f30d26e4 | 2981 | struct edp_power_seq power_seq = { 0 }; |
174edf1f | 2982 | enum port port = intel_dig_port->port; |
5eb08b69 | 2983 | const char *name = NULL; |
b329530c | 2984 | int type; |
a4fc5ed6 | 2985 | |
0767935e DV |
2986 | /* Preserve the current hw state. */ |
2987 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 2988 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 2989 | |
f7d24902 | 2990 | type = DRM_MODE_CONNECTOR_DisplayPort; |
19c03924 GB |
2991 | /* |
2992 | * FIXME : We need to initialize built-in panels before external panels. | |
2993 | * For X0, DP_C is fixed as eDP. Revisit this as part of VLV eDP cleanup | |
2994 | */ | |
f7d24902 ID |
2995 | switch (port) { |
2996 | case PORT_A: | |
19c03924 | 2997 | type = DRM_MODE_CONNECTOR_eDP; |
f7d24902 ID |
2998 | break; |
2999 | case PORT_C: | |
3000 | if (IS_VALLEYVIEW(dev)) | |
3001 | type = DRM_MODE_CONNECTOR_eDP; | |
3002 | break; | |
3003 | case PORT_D: | |
3004 | if (HAS_PCH_SPLIT(dev) && intel_dpd_is_edp(dev)) | |
3005 | type = DRM_MODE_CONNECTOR_eDP; | |
3006 | break; | |
3007 | default: /* silence GCC warning */ | |
3008 | break; | |
b329530c AJ |
3009 | } |
3010 | ||
f7d24902 ID |
3011 | /* |
3012 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
3013 | * for DP the encoder type can be set by the caller to | |
3014 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
3015 | */ | |
3016 | if (type == DRM_MODE_CONNECTOR_eDP) | |
3017 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
3018 | ||
e7281eab ID |
3019 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
3020 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
3021 | port_name(port)); | |
3022 | ||
b329530c | 3023 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
3024 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
3025 | ||
a4fc5ed6 KP |
3026 | connector->interlace_allowed = true; |
3027 | connector->doublescan_allowed = 0; | |
3028 | ||
f0fec3f2 PZ |
3029 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
3030 | ironlake_panel_vdd_work); | |
a4fc5ed6 | 3031 | |
df0e9248 | 3032 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 KP |
3033 | drm_sysfs_connector_add(connector); |
3034 | ||
affa9354 | 3035 | if (HAS_DDI(dev)) |
bcbc889b PZ |
3036 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
3037 | else | |
3038 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
3039 | ||
9ed35ab1 PZ |
3040 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
3041 | if (HAS_DDI(dev)) { | |
3042 | switch (intel_dig_port->port) { | |
3043 | case PORT_A: | |
3044 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
3045 | break; | |
3046 | case PORT_B: | |
3047 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
3048 | break; | |
3049 | case PORT_C: | |
3050 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
3051 | break; | |
3052 | case PORT_D: | |
3053 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
3054 | break; | |
3055 | default: | |
3056 | BUG(); | |
3057 | } | |
3058 | } | |
e8cb4558 | 3059 | |
a4fc5ed6 | 3060 | /* Set up the DDC bus. */ |
ab9d7c30 PZ |
3061 | switch (port) { |
3062 | case PORT_A: | |
1d843f9d | 3063 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
3064 | name = "DPDDC-A"; |
3065 | break; | |
3066 | case PORT_B: | |
1d843f9d | 3067 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
3068 | name = "DPDDC-B"; |
3069 | break; | |
3070 | case PORT_C: | |
1d843f9d | 3071 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
3072 | name = "DPDDC-C"; |
3073 | break; | |
3074 | case PORT_D: | |
1d843f9d | 3075 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
3076 | name = "DPDDC-D"; |
3077 | break; | |
3078 | default: | |
ad1c0b19 | 3079 | BUG(); |
5eb08b69 ZW |
3080 | } |
3081 | ||
67a54566 | 3082 | if (is_edp(intel_dp)) |
f30d26e4 | 3083 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); |
c1f05264 DA |
3084 | |
3085 | intel_dp_i2c_init(intel_dp, intel_connector, name); | |
3086 | ||
67a54566 | 3087 | /* Cache DPCD and EDID for edp. */ |
c1f05264 DA |
3088 | if (is_edp(intel_dp)) { |
3089 | bool ret; | |
f8779fda | 3090 | struct drm_display_mode *scan; |
c1f05264 | 3091 | struct edid *edid; |
5d613501 JB |
3092 | |
3093 | ironlake_edp_panel_vdd_on(intel_dp); | |
59f3e272 | 3094 | ret = intel_dp_get_dpcd(intel_dp); |
bd943159 | 3095 | ironlake_edp_panel_vdd_off(intel_dp, false); |
99ea7127 | 3096 | |
59f3e272 | 3097 | if (ret) { |
7183dc29 JB |
3098 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
3099 | dev_priv->no_aux_handshake = | |
3100 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
89667383 JB |
3101 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; |
3102 | } else { | |
3d3dc149 | 3103 | /* if this fails, presume the device is a ghost */ |
48898b03 | 3104 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); |
fa90ecef PZ |
3105 | intel_dp_encoder_destroy(&intel_encoder->base); |
3106 | intel_dp_destroy(connector); | |
3d3dc149 | 3107 | return; |
89667383 | 3108 | } |
89667383 | 3109 | |
f30d26e4 JN |
3110 | /* We now know it's not a ghost, init power sequence regs. */ |
3111 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
3112 | &power_seq); | |
3113 | ||
d6f24d0f JB |
3114 | ironlake_edp_panel_vdd_on(intel_dp); |
3115 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
3116 | if (edid) { | |
9cd300e0 JN |
3117 | if (drm_add_edid_modes(connector, edid)) { |
3118 | drm_mode_connector_update_edid_property(connector, edid); | |
3119 | drm_edid_to_eld(connector, edid); | |
3120 | } else { | |
3121 | kfree(edid); | |
3122 | edid = ERR_PTR(-EINVAL); | |
3123 | } | |
3124 | } else { | |
3125 | edid = ERR_PTR(-ENOENT); | |
d6f24d0f | 3126 | } |
9cd300e0 | 3127 | intel_connector->edid = edid; |
f8779fda JN |
3128 | |
3129 | /* prefer fixed mode from EDID if available */ | |
3130 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
3131 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
3132 | fixed_mode = drm_mode_duplicate(dev, scan); | |
3133 | break; | |
3134 | } | |
d6f24d0f | 3135 | } |
f8779fda JN |
3136 | |
3137 | /* fallback to VBT if available for eDP */ | |
41aa3448 RV |
3138 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { |
3139 | fixed_mode = drm_mode_duplicate(dev, dev_priv->vbt.lfp_lvds_vbt_mode); | |
f8779fda JN |
3140 | if (fixed_mode) |
3141 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
3142 | } | |
f8779fda | 3143 | |
d6f24d0f JB |
3144 | ironlake_edp_panel_vdd_off(intel_dp, false); |
3145 | } | |
552fb0b7 | 3146 | |
4d926461 | 3147 | if (is_edp(intel_dp)) { |
dd06f90e | 3148 | intel_panel_init(&intel_connector->panel, fixed_mode); |
0657b6b1 | 3149 | intel_panel_setup_backlight(connector); |
32f9d658 ZW |
3150 | } |
3151 | ||
f684960e CW |
3152 | intel_dp_add_properties(intel_dp, connector); |
3153 | ||
a4fc5ed6 KP |
3154 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
3155 | * 0xd. Failure to do so will result in spurious interrupts being | |
3156 | * generated on the port when a cable is not attached. | |
3157 | */ | |
3158 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
3159 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
3160 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
3161 | } | |
3162 | } | |
f0fec3f2 PZ |
3163 | |
3164 | void | |
3165 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
3166 | { | |
3167 | struct intel_digital_port *intel_dig_port; | |
3168 | struct intel_encoder *intel_encoder; | |
3169 | struct drm_encoder *encoder; | |
3170 | struct intel_connector *intel_connector; | |
3171 | ||
3172 | intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL); | |
3173 | if (!intel_dig_port) | |
3174 | return; | |
3175 | ||
3176 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); | |
3177 | if (!intel_connector) { | |
3178 | kfree(intel_dig_port); | |
3179 | return; | |
3180 | } | |
3181 | ||
3182 | intel_encoder = &intel_dig_port->base; | |
3183 | encoder = &intel_encoder->base; | |
3184 | ||
3185 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
3186 | DRM_MODE_ENCODER_TMDS); | |
00c09d70 | 3187 | drm_encoder_helper_add(&intel_encoder->base, &intel_dp_helper_funcs); |
f0fec3f2 | 3188 | |
5bfe2ac0 | 3189 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 PZ |
3190 | intel_encoder->enable = intel_enable_dp; |
3191 | intel_encoder->pre_enable = intel_pre_enable_dp; | |
3192 | intel_encoder->disable = intel_disable_dp; | |
3193 | intel_encoder->post_disable = intel_post_disable_dp; | |
3194 | intel_encoder->get_hw_state = intel_dp_get_hw_state; | |
045ac3b5 | 3195 | intel_encoder->get_config = intel_dp_get_config; |
89b667f8 JB |
3196 | if (IS_VALLEYVIEW(dev)) |
3197 | intel_encoder->pre_pll_enable = intel_dp_pre_pll_enable; | |
f0fec3f2 | 3198 | |
174edf1f | 3199 | intel_dig_port->port = port; |
f0fec3f2 PZ |
3200 | intel_dig_port->dp.output_reg = output_reg; |
3201 | ||
00c09d70 | 3202 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
f0fec3f2 PZ |
3203 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
3204 | intel_encoder->cloneable = false; | |
3205 | intel_encoder->hot_plug = intel_dp_hot_plug; | |
3206 | ||
3207 | intel_dp_init_connector(intel_dig_port, intel_connector); | |
3208 | } |