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Commit | Line | Data |
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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 | 55 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 56 | { |
68b4d824 ID |
57 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
58 | ||
59 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
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) |
b18ac466 | 262 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 263 | msecs_to_jiffies_timeout(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 | ||
b84a1cf8 | 274 | static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp) |
a4fc5ed6 | 275 | { |
174edf1f PZ |
276 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
277 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 278 | struct drm_i915_private *dev_priv = dev->dev_private; |
9ee32fea | 279 | |
a4fc5ed6 | 280 | /* The clock divider is based off the hrawclk, |
fb0f8fbf KP |
281 | * and would like to run at 2MHz. So, take the |
282 | * hrawclk value and divide by 2 and use that | |
6176b8f9 JB |
283 | * |
284 | * Note that PCH attached eDP panels should use a 125MHz input | |
285 | * clock divider. | |
a4fc5ed6 | 286 | */ |
a62d0834 | 287 | if (IS_VALLEYVIEW(dev)) { |
b84a1cf8 | 288 | return 100; |
a62d0834 | 289 | } else if (intel_dig_port->port == PORT_A) { |
affa9354 | 290 | if (HAS_DDI(dev)) |
b84a1cf8 | 291 | return DIV_ROUND_CLOSEST( |
b2b877ff | 292 | intel_ddi_get_cdclk_freq(dev_priv), 2000); |
9473c8f4 | 293 | else if (IS_GEN6(dev) || IS_GEN7(dev)) |
b84a1cf8 | 294 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 295 | else |
b84a1cf8 | 296 | return 225; /* eDP input clock at 450Mhz */ |
2c55c336 JN |
297 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
298 | /* Workaround for non-ULT HSW */ | |
b84a1cf8 | 299 | return 74; |
2c55c336 | 300 | } else if (HAS_PCH_SPLIT(dev)) { |
b84a1cf8 | 301 | return DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 302 | } else { |
b84a1cf8 | 303 | return intel_hrawclk(dev) / 2; |
2c55c336 | 304 | } |
b84a1cf8 RV |
305 | } |
306 | ||
307 | static int | |
308 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
309 | uint8_t *send, int send_bytes, | |
310 | uint8_t *recv, int recv_size) | |
311 | { | |
312 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
313 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
314 | struct drm_i915_private *dev_priv = dev->dev_private; | |
315 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
316 | uint32_t ch_data = ch_ctl + 4; | |
317 | int i, ret, recv_bytes; | |
318 | uint32_t status; | |
319 | uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp); | |
320 | int try, precharge; | |
321 | bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); | |
322 | ||
323 | /* dp aux is extremely sensitive to irq latency, hence request the | |
324 | * lowest possible wakeup latency and so prevent the cpu from going into | |
325 | * deep sleep states. | |
326 | */ | |
327 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
328 | ||
329 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 330 | |
6b4e0a93 DV |
331 | if (IS_GEN6(dev)) |
332 | precharge = 3; | |
333 | else | |
334 | precharge = 5; | |
335 | ||
11bee43e JB |
336 | /* Try to wait for any previous AUX channel activity */ |
337 | for (try = 0; try < 3; try++) { | |
ef04f00d | 338 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
339 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
340 | break; | |
341 | msleep(1); | |
342 | } | |
343 | ||
344 | if (try == 3) { | |
345 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
346 | I915_READ(ch_ctl)); | |
9ee32fea DV |
347 | ret = -EBUSY; |
348 | goto out; | |
4f7f7b7e CW |
349 | } |
350 | ||
fb0f8fbf KP |
351 | /* Must try at least 3 times according to DP spec */ |
352 | for (try = 0; try < 5; try++) { | |
353 | /* Load the send data into the aux channel data registers */ | |
4f7f7b7e CW |
354 | for (i = 0; i < send_bytes; i += 4) |
355 | I915_WRITE(ch_data + i, | |
356 | pack_aux(send + i, send_bytes - i)); | |
0206e353 | 357 | |
fb0f8fbf | 358 | /* Send the command and wait for it to complete */ |
4f7f7b7e CW |
359 | I915_WRITE(ch_ctl, |
360 | DP_AUX_CH_CTL_SEND_BUSY | | |
9ee32fea | 361 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | |
4f7f7b7e CW |
362 | DP_AUX_CH_CTL_TIME_OUT_400us | |
363 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
364 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
365 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | | |
366 | DP_AUX_CH_CTL_DONE | | |
367 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
368 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
9ee32fea DV |
369 | |
370 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
0206e353 | 371 | |
fb0f8fbf | 372 | /* Clear done status and any errors */ |
4f7f7b7e CW |
373 | I915_WRITE(ch_ctl, |
374 | status | | |
375 | DP_AUX_CH_CTL_DONE | | |
376 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
377 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
d7e96fea AJ |
378 | |
379 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
380 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
381 | continue; | |
4f7f7b7e | 382 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
383 | break; |
384 | } | |
385 | ||
a4fc5ed6 | 386 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 387 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
388 | ret = -EBUSY; |
389 | goto out; | |
a4fc5ed6 KP |
390 | } |
391 | ||
392 | /* Check for timeout or receive error. | |
393 | * Timeouts occur when the sink is not connected | |
394 | */ | |
a5b3da54 | 395 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 396 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
397 | ret = -EIO; |
398 | goto out; | |
a5b3da54 | 399 | } |
1ae8c0a5 KP |
400 | |
401 | /* Timeouts occur when the device isn't connected, so they're | |
402 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 403 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 404 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
405 | ret = -ETIMEDOUT; |
406 | goto out; | |
a4fc5ed6 KP |
407 | } |
408 | ||
409 | /* Unload any bytes sent back from the other side */ | |
410 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
411 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
412 | if (recv_bytes > recv_size) |
413 | recv_bytes = recv_size; | |
0206e353 | 414 | |
4f7f7b7e CW |
415 | for (i = 0; i < recv_bytes; i += 4) |
416 | unpack_aux(I915_READ(ch_data + i), | |
417 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 418 | |
9ee32fea DV |
419 | ret = recv_bytes; |
420 | out: | |
421 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
422 | ||
423 | return ret; | |
a4fc5ed6 KP |
424 | } |
425 | ||
426 | /* Write data to the aux channel in native mode */ | |
427 | static int | |
ea5b213a | 428 | intel_dp_aux_native_write(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
429 | uint16_t address, uint8_t *send, int send_bytes) |
430 | { | |
431 | int ret; | |
432 | uint8_t msg[20]; | |
433 | int msg_bytes; | |
434 | uint8_t ack; | |
435 | ||
9b984dae | 436 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
437 | if (send_bytes > 16) |
438 | return -1; | |
439 | msg[0] = AUX_NATIVE_WRITE << 4; | |
440 | msg[1] = address >> 8; | |
eebc863e | 441 | msg[2] = address & 0xff; |
a4fc5ed6 KP |
442 | msg[3] = send_bytes - 1; |
443 | memcpy(&msg[4], send, send_bytes); | |
444 | msg_bytes = send_bytes + 4; | |
445 | for (;;) { | |
ea5b213a | 446 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1); |
a4fc5ed6 KP |
447 | if (ret < 0) |
448 | return ret; | |
449 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
450 | break; | |
451 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
452 | udelay(100); | |
453 | else | |
a5b3da54 | 454 | return -EIO; |
a4fc5ed6 KP |
455 | } |
456 | return send_bytes; | |
457 | } | |
458 | ||
459 | /* Write a single byte to the aux channel in native mode */ | |
460 | static int | |
ea5b213a | 461 | intel_dp_aux_native_write_1(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
462 | uint16_t address, uint8_t byte) |
463 | { | |
ea5b213a | 464 | return intel_dp_aux_native_write(intel_dp, address, &byte, 1); |
a4fc5ed6 KP |
465 | } |
466 | ||
467 | /* read bytes from a native aux channel */ | |
468 | static int | |
ea5b213a | 469 | intel_dp_aux_native_read(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
470 | uint16_t address, uint8_t *recv, int recv_bytes) |
471 | { | |
472 | uint8_t msg[4]; | |
473 | int msg_bytes; | |
474 | uint8_t reply[20]; | |
475 | int reply_bytes; | |
476 | uint8_t ack; | |
477 | int ret; | |
478 | ||
9b984dae | 479 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
480 | msg[0] = AUX_NATIVE_READ << 4; |
481 | msg[1] = address >> 8; | |
482 | msg[2] = address & 0xff; | |
483 | msg[3] = recv_bytes - 1; | |
484 | ||
485 | msg_bytes = 4; | |
486 | reply_bytes = recv_bytes + 1; | |
487 | ||
488 | for (;;) { | |
ea5b213a | 489 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, |
a4fc5ed6 | 490 | reply, reply_bytes); |
a5b3da54 KP |
491 | if (ret == 0) |
492 | return -EPROTO; | |
493 | if (ret < 0) | |
a4fc5ed6 KP |
494 | return ret; |
495 | ack = reply[0]; | |
496 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
497 | memcpy(recv, reply + 1, ret - 1); | |
498 | return ret - 1; | |
499 | } | |
500 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
501 | udelay(100); | |
502 | else | |
a5b3da54 | 503 | return -EIO; |
a4fc5ed6 KP |
504 | } |
505 | } | |
506 | ||
507 | static int | |
ab2c0672 DA |
508 | intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
509 | uint8_t write_byte, uint8_t *read_byte) | |
a4fc5ed6 | 510 | { |
ab2c0672 | 511 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
ea5b213a CW |
512 | struct intel_dp *intel_dp = container_of(adapter, |
513 | struct intel_dp, | |
514 | adapter); | |
ab2c0672 DA |
515 | uint16_t address = algo_data->address; |
516 | uint8_t msg[5]; | |
517 | uint8_t reply[2]; | |
8316f337 | 518 | unsigned retry; |
ab2c0672 DA |
519 | int msg_bytes; |
520 | int reply_bytes; | |
521 | int ret; | |
522 | ||
9b984dae | 523 | intel_dp_check_edp(intel_dp); |
ab2c0672 DA |
524 | /* Set up the command byte */ |
525 | if (mode & MODE_I2C_READ) | |
526 | msg[0] = AUX_I2C_READ << 4; | |
527 | else | |
528 | msg[0] = AUX_I2C_WRITE << 4; | |
529 | ||
530 | if (!(mode & MODE_I2C_STOP)) | |
531 | msg[0] |= AUX_I2C_MOT << 4; | |
a4fc5ed6 | 532 | |
ab2c0672 DA |
533 | msg[1] = address >> 8; |
534 | msg[2] = address; | |
535 | ||
536 | switch (mode) { | |
537 | case MODE_I2C_WRITE: | |
538 | msg[3] = 0; | |
539 | msg[4] = write_byte; | |
540 | msg_bytes = 5; | |
541 | reply_bytes = 1; | |
542 | break; | |
543 | case MODE_I2C_READ: | |
544 | msg[3] = 0; | |
545 | msg_bytes = 4; | |
546 | reply_bytes = 2; | |
547 | break; | |
548 | default: | |
549 | msg_bytes = 3; | |
550 | reply_bytes = 1; | |
551 | break; | |
552 | } | |
553 | ||
8316f337 DF |
554 | for (retry = 0; retry < 5; retry++) { |
555 | ret = intel_dp_aux_ch(intel_dp, | |
556 | msg, msg_bytes, | |
557 | reply, reply_bytes); | |
ab2c0672 | 558 | if (ret < 0) { |
3ff99164 | 559 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); |
ab2c0672 DA |
560 | return ret; |
561 | } | |
8316f337 DF |
562 | |
563 | switch (reply[0] & AUX_NATIVE_REPLY_MASK) { | |
564 | case AUX_NATIVE_REPLY_ACK: | |
565 | /* I2C-over-AUX Reply field is only valid | |
566 | * when paired with AUX ACK. | |
567 | */ | |
568 | break; | |
569 | case AUX_NATIVE_REPLY_NACK: | |
570 | DRM_DEBUG_KMS("aux_ch native nack\n"); | |
571 | return -EREMOTEIO; | |
572 | case AUX_NATIVE_REPLY_DEFER: | |
573 | udelay(100); | |
574 | continue; | |
575 | default: | |
576 | DRM_ERROR("aux_ch invalid native reply 0x%02x\n", | |
577 | reply[0]); | |
578 | return -EREMOTEIO; | |
579 | } | |
580 | ||
ab2c0672 DA |
581 | switch (reply[0] & AUX_I2C_REPLY_MASK) { |
582 | case AUX_I2C_REPLY_ACK: | |
583 | if (mode == MODE_I2C_READ) { | |
584 | *read_byte = reply[1]; | |
585 | } | |
586 | return reply_bytes - 1; | |
587 | case AUX_I2C_REPLY_NACK: | |
8316f337 | 588 | DRM_DEBUG_KMS("aux_i2c nack\n"); |
ab2c0672 DA |
589 | return -EREMOTEIO; |
590 | case AUX_I2C_REPLY_DEFER: | |
8316f337 | 591 | DRM_DEBUG_KMS("aux_i2c defer\n"); |
ab2c0672 DA |
592 | udelay(100); |
593 | break; | |
594 | default: | |
8316f337 | 595 | DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]); |
ab2c0672 DA |
596 | return -EREMOTEIO; |
597 | } | |
598 | } | |
8316f337 DF |
599 | |
600 | DRM_ERROR("too many retries, giving up\n"); | |
601 | return -EREMOTEIO; | |
a4fc5ed6 KP |
602 | } |
603 | ||
604 | static int | |
ea5b213a | 605 | intel_dp_i2c_init(struct intel_dp *intel_dp, |
55f78c43 | 606 | struct intel_connector *intel_connector, const char *name) |
a4fc5ed6 | 607 | { |
0b5c541b KP |
608 | int ret; |
609 | ||
d54e9d28 | 610 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
ea5b213a CW |
611 | intel_dp->algo.running = false; |
612 | intel_dp->algo.address = 0; | |
613 | intel_dp->algo.aux_ch = intel_dp_i2c_aux_ch; | |
614 | ||
0206e353 | 615 | memset(&intel_dp->adapter, '\0', sizeof(intel_dp->adapter)); |
ea5b213a CW |
616 | intel_dp->adapter.owner = THIS_MODULE; |
617 | intel_dp->adapter.class = I2C_CLASS_DDC; | |
0206e353 | 618 | strncpy(intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1); |
ea5b213a CW |
619 | intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0'; |
620 | intel_dp->adapter.algo_data = &intel_dp->algo; | |
621 | intel_dp->adapter.dev.parent = &intel_connector->base.kdev; | |
622 | ||
0b5c541b KP |
623 | ironlake_edp_panel_vdd_on(intel_dp); |
624 | ret = i2c_dp_aux_add_bus(&intel_dp->adapter); | |
bd943159 | 625 | ironlake_edp_panel_vdd_off(intel_dp, false); |
0b5c541b | 626 | return ret; |
a4fc5ed6 KP |
627 | } |
628 | ||
c6bb3538 DV |
629 | static void |
630 | intel_dp_set_clock(struct intel_encoder *encoder, | |
631 | struct intel_crtc_config *pipe_config, int link_bw) | |
632 | { | |
633 | struct drm_device *dev = encoder->base.dev; | |
634 | ||
635 | if (IS_G4X(dev)) { | |
636 | if (link_bw == DP_LINK_BW_1_62) { | |
637 | pipe_config->dpll.p1 = 2; | |
638 | pipe_config->dpll.p2 = 10; | |
639 | pipe_config->dpll.n = 2; | |
640 | pipe_config->dpll.m1 = 23; | |
641 | pipe_config->dpll.m2 = 8; | |
642 | } else { | |
643 | pipe_config->dpll.p1 = 1; | |
644 | pipe_config->dpll.p2 = 10; | |
645 | pipe_config->dpll.n = 1; | |
646 | pipe_config->dpll.m1 = 14; | |
647 | pipe_config->dpll.m2 = 2; | |
648 | } | |
649 | pipe_config->clock_set = true; | |
650 | } else if (IS_HASWELL(dev)) { | |
651 | /* Haswell has special-purpose DP DDI clocks. */ | |
652 | } else if (HAS_PCH_SPLIT(dev)) { | |
653 | if (link_bw == DP_LINK_BW_1_62) { | |
654 | pipe_config->dpll.n = 1; | |
655 | pipe_config->dpll.p1 = 2; | |
656 | pipe_config->dpll.p2 = 10; | |
657 | pipe_config->dpll.m1 = 12; | |
658 | pipe_config->dpll.m2 = 9; | |
659 | } else { | |
660 | pipe_config->dpll.n = 2; | |
661 | pipe_config->dpll.p1 = 1; | |
662 | pipe_config->dpll.p2 = 10; | |
663 | pipe_config->dpll.m1 = 14; | |
664 | pipe_config->dpll.m2 = 8; | |
665 | } | |
666 | pipe_config->clock_set = true; | |
667 | } else if (IS_VALLEYVIEW(dev)) { | |
668 | /* FIXME: Need to figure out optimized DP clocks for vlv. */ | |
669 | } | |
670 | } | |
671 | ||
00c09d70 | 672 | bool |
5bfe2ac0 DV |
673 | intel_dp_compute_config(struct intel_encoder *encoder, |
674 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 675 | { |
5bfe2ac0 | 676 | struct drm_device *dev = encoder->base.dev; |
36008365 | 677 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 678 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 679 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 680 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 681 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 682 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 683 | int lane_count, clock; |
397fe157 | 684 | int max_lane_count = drm_dp_max_lane_count(intel_dp->dpcd); |
ea5b213a | 685 | int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; |
083f9560 | 686 | int bpp, mode_rate; |
a4fc5ed6 | 687 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
ff9a6750 | 688 | int link_avail, link_clock; |
a4fc5ed6 | 689 | |
bc7d38a4 | 690 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
691 | pipe_config->has_pch_encoder = true; |
692 | ||
03afc4a2 | 693 | pipe_config->has_dp_encoder = true; |
a4fc5ed6 | 694 | |
dd06f90e JN |
695 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
696 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
697 | adjusted_mode); | |
2dd24552 JB |
698 | if (!HAS_PCH_SPLIT(dev)) |
699 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
700 | intel_connector->panel.fitting_mode); | |
701 | else | |
b074cec8 JB |
702 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
703 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
704 | } |
705 | ||
cb1793ce | 706 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
707 | return false; |
708 | ||
083f9560 DV |
709 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
710 | "max bw %02x pixel clock %iKHz\n", | |
71244653 | 711 | max_lane_count, bws[max_clock], adjusted_mode->clock); |
083f9560 | 712 | |
36008365 DV |
713 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
714 | * bpc in between. */ | |
3e7ca985 | 715 | bpp = pipe_config->pipe_bpp; |
e1b73cba DV |
716 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp) |
717 | bpp = min_t(int, bpp, dev_priv->vbt.edp_bpp); | |
657445fe | 718 | |
36008365 | 719 | for (; bpp >= 6*3; bpp -= 2*3) { |
ff9a6750 | 720 | mode_rate = intel_dp_link_required(adjusted_mode->clock, bpp); |
36008365 DV |
721 | |
722 | for (clock = 0; clock <= max_clock; clock++) { | |
723 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
724 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); | |
725 | link_avail = intel_dp_max_data_rate(link_clock, | |
726 | lane_count); | |
727 | ||
728 | if (mode_rate <= link_avail) { | |
729 | goto found; | |
730 | } | |
731 | } | |
732 | } | |
733 | } | |
c4867936 | 734 | |
36008365 | 735 | return false; |
3685a8f3 | 736 | |
36008365 | 737 | found: |
55bc60db VS |
738 | if (intel_dp->color_range_auto) { |
739 | /* | |
740 | * See: | |
741 | * CEA-861-E - 5.1 Default Encoding Parameters | |
742 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
743 | */ | |
18316c8c | 744 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
745 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
746 | else | |
747 | intel_dp->color_range = 0; | |
748 | } | |
749 | ||
3685a8f3 | 750 | if (intel_dp->color_range) |
50f3b016 | 751 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 752 | |
36008365 DV |
753 | intel_dp->link_bw = bws[clock]; |
754 | intel_dp->lane_count = lane_count; | |
657445fe | 755 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 756 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 757 | |
36008365 DV |
758 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
759 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 760 | pipe_config->port_clock, bpp); |
36008365 DV |
761 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
762 | mode_rate, link_avail); | |
a4fc5ed6 | 763 | |
03afc4a2 | 764 | intel_link_compute_m_n(bpp, lane_count, |
ff9a6750 | 765 | adjusted_mode->clock, pipe_config->port_clock, |
03afc4a2 | 766 | &pipe_config->dp_m_n); |
9d1a455b | 767 | |
c6bb3538 DV |
768 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); |
769 | ||
03afc4a2 | 770 | return true; |
a4fc5ed6 KP |
771 | } |
772 | ||
247d89f6 PZ |
773 | void intel_dp_init_link_config(struct intel_dp *intel_dp) |
774 | { | |
775 | memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); | |
776 | intel_dp->link_configuration[0] = intel_dp->link_bw; | |
777 | intel_dp->link_configuration[1] = intel_dp->lane_count; | |
778 | intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; | |
779 | /* | |
780 | * Check for DPCD version > 1.1 and enhanced framing support | |
781 | */ | |
782 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
783 | (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { | |
784 | intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
785 | } | |
786 | } | |
787 | ||
7c62a164 | 788 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 789 | { |
7c62a164 DV |
790 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
791 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
792 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
793 | struct drm_i915_private *dev_priv = dev->dev_private; |
794 | u32 dpa_ctl; | |
795 | ||
ff9a6750 | 796 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
797 | dpa_ctl = I915_READ(DP_A); |
798 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
799 | ||
ff9a6750 | 800 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
801 | /* For a long time we've carried around a ILK-DevA w/a for the |
802 | * 160MHz clock. If we're really unlucky, it's still required. | |
803 | */ | |
804 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 805 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 806 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
807 | } else { |
808 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 809 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 810 | } |
1ce17038 | 811 | |
ea9b6006 DV |
812 | I915_WRITE(DP_A, dpa_ctl); |
813 | ||
814 | POSTING_READ(DP_A); | |
815 | udelay(500); | |
816 | } | |
817 | ||
a4fc5ed6 KP |
818 | static void |
819 | intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, | |
820 | struct drm_display_mode *adjusted_mode) | |
821 | { | |
e3421a18 | 822 | struct drm_device *dev = encoder->dev; |
417e822d | 823 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 824 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
bc7d38a4 | 825 | enum port port = dp_to_dig_port(intel_dp)->port; |
7c62a164 | 826 | struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); |
a4fc5ed6 | 827 | |
417e822d | 828 | /* |
1a2eb460 | 829 | * There are four kinds of DP registers: |
417e822d KP |
830 | * |
831 | * IBX PCH | |
1a2eb460 KP |
832 | * SNB CPU |
833 | * IVB CPU | |
417e822d KP |
834 | * CPT PCH |
835 | * | |
836 | * IBX PCH and CPU are the same for almost everything, | |
837 | * except that the CPU DP PLL is configured in this | |
838 | * register | |
839 | * | |
840 | * CPT PCH is quite different, having many bits moved | |
841 | * to the TRANS_DP_CTL register instead. That | |
842 | * configuration happens (oddly) in ironlake_pch_enable | |
843 | */ | |
9c9e7927 | 844 | |
417e822d KP |
845 | /* Preserve the BIOS-computed detected bit. This is |
846 | * supposed to be read-only. | |
847 | */ | |
848 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 849 | |
417e822d | 850 | /* Handle DP bits in common between all three register formats */ |
417e822d | 851 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 852 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 853 | |
e0dac65e WF |
854 | if (intel_dp->has_audio) { |
855 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", | |
7c62a164 | 856 | pipe_name(crtc->pipe)); |
ea5b213a | 857 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
e0dac65e WF |
858 | intel_write_eld(encoder, adjusted_mode); |
859 | } | |
247d89f6 PZ |
860 | |
861 | intel_dp_init_link_config(intel_dp); | |
a4fc5ed6 | 862 | |
417e822d | 863 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 864 | |
bc7d38a4 | 865 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
866 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
867 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
868 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
869 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
870 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
871 | ||
872 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
873 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
874 | ||
7c62a164 | 875 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 876 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 877 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 878 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
879 | |
880 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
881 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
882 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
883 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
884 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
885 | ||
886 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
887 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
888 | ||
7c62a164 | 889 | if (crtc->pipe == 1) |
417e822d | 890 | intel_dp->DP |= DP_PIPEB_SELECT; |
417e822d KP |
891 | } else { |
892 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 893 | } |
ea9b6006 | 894 | |
bc7d38a4 | 895 | if (port == PORT_A && !IS_VALLEYVIEW(dev)) |
7c62a164 | 896 | ironlake_set_pll_cpu_edp(intel_dp); |
a4fc5ed6 KP |
897 | } |
898 | ||
99ea7127 KP |
899 | #define IDLE_ON_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
900 | #define IDLE_ON_VALUE (PP_ON | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
901 | ||
902 | #define IDLE_OFF_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) | |
903 | #define IDLE_OFF_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
904 | ||
905 | #define IDLE_CYCLE_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) | |
906 | #define IDLE_CYCLE_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
907 | ||
908 | static void ironlake_wait_panel_status(struct intel_dp *intel_dp, | |
909 | u32 mask, | |
910 | u32 value) | |
bd943159 | 911 | { |
30add22d | 912 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 913 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
914 | u32 pp_stat_reg, pp_ctrl_reg; |
915 | ||
916 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; | |
917 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
32ce697c | 918 | |
99ea7127 | 919 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
920 | mask, value, |
921 | I915_READ(pp_stat_reg), | |
922 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 923 | |
453c5420 | 924 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 925 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
926 | I915_READ(pp_stat_reg), |
927 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 928 | } |
99ea7127 | 929 | } |
32ce697c | 930 | |
99ea7127 KP |
931 | static void ironlake_wait_panel_on(struct intel_dp *intel_dp) |
932 | { | |
933 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
934 | ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); | |
bd943159 KP |
935 | } |
936 | ||
99ea7127 KP |
937 | static void ironlake_wait_panel_off(struct intel_dp *intel_dp) |
938 | { | |
939 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
940 | ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); | |
941 | } | |
942 | ||
943 | static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp) | |
944 | { | |
945 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
946 | ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); | |
947 | } | |
948 | ||
949 | ||
832dd3c1 KP |
950 | /* Read the current pp_control value, unlocking the register if it |
951 | * is locked | |
952 | */ | |
953 | ||
453c5420 | 954 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 955 | { |
453c5420 JB |
956 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
957 | struct drm_i915_private *dev_priv = dev->dev_private; | |
958 | u32 control; | |
959 | u32 pp_ctrl_reg; | |
960 | ||
961 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
962 | control = I915_READ(pp_ctrl_reg); | |
832dd3c1 KP |
963 | |
964 | control &= ~PANEL_UNLOCK_MASK; | |
965 | control |= PANEL_UNLOCK_REGS; | |
966 | return control; | |
bd943159 KP |
967 | } |
968 | ||
82a4d9c0 | 969 | void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 970 | { |
30add22d | 971 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
972 | struct drm_i915_private *dev_priv = dev->dev_private; |
973 | u32 pp; | |
453c5420 | 974 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 975 | |
97af61f5 KP |
976 | if (!is_edp(intel_dp)) |
977 | return; | |
f01eca2e | 978 | DRM_DEBUG_KMS("Turn eDP VDD on\n"); |
5d613501 | 979 | |
bd943159 KP |
980 | WARN(intel_dp->want_panel_vdd, |
981 | "eDP VDD already requested on\n"); | |
982 | ||
983 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 984 | |
bd943159 KP |
985 | if (ironlake_edp_have_panel_vdd(intel_dp)) { |
986 | DRM_DEBUG_KMS("eDP VDD already on\n"); | |
987 | return; | |
988 | } | |
989 | ||
99ea7127 KP |
990 | if (!ironlake_edp_have_panel_power(intel_dp)) |
991 | ironlake_wait_panel_power_cycle(intel_dp); | |
992 | ||
453c5420 | 993 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 994 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 995 | |
453c5420 JB |
996 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
997 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
998 | ||
999 | I915_WRITE(pp_ctrl_reg, pp); | |
1000 | POSTING_READ(pp_ctrl_reg); | |
1001 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1002 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1003 | /* |
1004 | * If the panel wasn't on, delay before accessing aux channel | |
1005 | */ | |
1006 | if (!ironlake_edp_have_panel_power(intel_dp)) { | |
bd943159 | 1007 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1008 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1009 | } |
5d613501 JB |
1010 | } |
1011 | ||
bd943159 | 1012 | static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1013 | { |
30add22d | 1014 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1015 | struct drm_i915_private *dev_priv = dev->dev_private; |
1016 | u32 pp; | |
453c5420 | 1017 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1018 | |
a0e99e68 DV |
1019 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
1020 | ||
bd943159 | 1021 | if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) { |
453c5420 | 1022 | pp = ironlake_get_pp_control(intel_dp); |
bd943159 | 1023 | pp &= ~EDP_FORCE_VDD; |
bd943159 | 1024 | |
453c5420 JB |
1025 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
1026 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1027 | ||
1028 | I915_WRITE(pp_ctrl_reg, pp); | |
1029 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1030 | |
453c5420 JB |
1031 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1032 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1033 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
99ea7127 | 1034 | msleep(intel_dp->panel_power_down_delay); |
bd943159 KP |
1035 | } |
1036 | } | |
5d613501 | 1037 | |
bd943159 KP |
1038 | static void ironlake_panel_vdd_work(struct work_struct *__work) |
1039 | { | |
1040 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1041 | struct intel_dp, panel_vdd_work); | |
30add22d | 1042 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bd943159 | 1043 | |
627f7675 | 1044 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 1045 | ironlake_panel_vdd_off_sync(intel_dp); |
627f7675 | 1046 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 KP |
1047 | } |
1048 | ||
82a4d9c0 | 1049 | void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1050 | { |
97af61f5 KP |
1051 | if (!is_edp(intel_dp)) |
1052 | return; | |
5d613501 | 1053 | |
bd943159 KP |
1054 | DRM_DEBUG_KMS("Turn eDP VDD off %d\n", intel_dp->want_panel_vdd); |
1055 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); | |
f2e8b18a | 1056 | |
bd943159 KP |
1057 | intel_dp->want_panel_vdd = false; |
1058 | ||
1059 | if (sync) { | |
1060 | ironlake_panel_vdd_off_sync(intel_dp); | |
1061 | } else { | |
1062 | /* | |
1063 | * Queue the timer to fire a long | |
1064 | * time from now (relative to the power down delay) | |
1065 | * to keep the panel power up across a sequence of operations | |
1066 | */ | |
1067 | schedule_delayed_work(&intel_dp->panel_vdd_work, | |
1068 | msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5)); | |
1069 | } | |
5d613501 JB |
1070 | } |
1071 | ||
82a4d9c0 | 1072 | void ironlake_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1073 | { |
30add22d | 1074 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1075 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1076 | u32 pp; |
453c5420 | 1077 | u32 pp_ctrl_reg; |
9934c132 | 1078 | |
97af61f5 | 1079 | if (!is_edp(intel_dp)) |
bd943159 | 1080 | return; |
99ea7127 KP |
1081 | |
1082 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1083 | ||
1084 | if (ironlake_edp_have_panel_power(intel_dp)) { | |
1085 | DRM_DEBUG_KMS("eDP power already on\n"); | |
7d639f35 | 1086 | return; |
99ea7127 | 1087 | } |
9934c132 | 1088 | |
99ea7127 | 1089 | ironlake_wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1090 | |
453c5420 | 1091 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1092 | if (IS_GEN5(dev)) { |
1093 | /* ILK workaround: disable reset around power sequence */ | |
1094 | pp &= ~PANEL_POWER_RESET; | |
1095 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1096 | POSTING_READ(PCH_PP_CONTROL); | |
1097 | } | |
37c6c9b0 | 1098 | |
1c0ae80a | 1099 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1100 | if (!IS_GEN5(dev)) |
1101 | pp |= PANEL_POWER_RESET; | |
1102 | ||
453c5420 JB |
1103 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; |
1104 | ||
1105 | I915_WRITE(pp_ctrl_reg, pp); | |
1106 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1107 | |
99ea7127 | 1108 | ironlake_wait_panel_on(intel_dp); |
9934c132 | 1109 | |
05ce1a49 KP |
1110 | if (IS_GEN5(dev)) { |
1111 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
1112 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1113 | POSTING_READ(PCH_PP_CONTROL); | |
1114 | } | |
9934c132 JB |
1115 | } |
1116 | ||
82a4d9c0 | 1117 | void ironlake_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1118 | { |
30add22d | 1119 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1120 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1121 | u32 pp; |
453c5420 | 1122 | u32 pp_ctrl_reg; |
9934c132 | 1123 | |
97af61f5 KP |
1124 | if (!is_edp(intel_dp)) |
1125 | return; | |
37c6c9b0 | 1126 | |
99ea7127 | 1127 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1128 | |
6cb49835 | 1129 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
37c6c9b0 | 1130 | |
453c5420 | 1131 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1132 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1133 | * panels get very unhappy and cease to work. */ | |
1134 | pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE); | |
453c5420 JB |
1135 | |
1136 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1137 | ||
1138 | I915_WRITE(pp_ctrl_reg, pp); | |
1139 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1140 | |
35a38556 DV |
1141 | intel_dp->want_panel_vdd = false; |
1142 | ||
99ea7127 | 1143 | ironlake_wait_panel_off(intel_dp); |
9934c132 JB |
1144 | } |
1145 | ||
d6c50ff8 | 1146 | void ironlake_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1147 | { |
da63a9f2 PZ |
1148 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1149 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 | 1150 | struct drm_i915_private *dev_priv = dev->dev_private; |
da63a9f2 | 1151 | int pipe = to_intel_crtc(intel_dig_port->base.base.crtc)->pipe; |
32f9d658 | 1152 | u32 pp; |
453c5420 | 1153 | u32 pp_ctrl_reg; |
32f9d658 | 1154 | |
f01eca2e KP |
1155 | if (!is_edp(intel_dp)) |
1156 | return; | |
1157 | ||
28c97730 | 1158 | DRM_DEBUG_KMS("\n"); |
01cb9ea6 JB |
1159 | /* |
1160 | * If we enable the backlight right away following a panel power | |
1161 | * on, we may see slight flicker as the panel syncs with the eDP | |
1162 | * link. So delay a bit to make sure the image is solid before | |
1163 | * allowing it to appear. | |
1164 | */ | |
f01eca2e | 1165 | msleep(intel_dp->backlight_on_delay); |
453c5420 | 1166 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1167 | pp |= EDP_BLC_ENABLE; |
453c5420 JB |
1168 | |
1169 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1170 | ||
1171 | I915_WRITE(pp_ctrl_reg, pp); | |
1172 | POSTING_READ(pp_ctrl_reg); | |
035aa3de DV |
1173 | |
1174 | intel_panel_enable_backlight(dev, pipe); | |
32f9d658 ZW |
1175 | } |
1176 | ||
d6c50ff8 | 1177 | void ironlake_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1178 | { |
30add22d | 1179 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1180 | struct drm_i915_private *dev_priv = dev->dev_private; |
1181 | u32 pp; | |
453c5420 | 1182 | u32 pp_ctrl_reg; |
32f9d658 | 1183 | |
f01eca2e KP |
1184 | if (!is_edp(intel_dp)) |
1185 | return; | |
1186 | ||
035aa3de DV |
1187 | intel_panel_disable_backlight(dev); |
1188 | ||
28c97730 | 1189 | DRM_DEBUG_KMS("\n"); |
453c5420 | 1190 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1191 | pp &= ~EDP_BLC_ENABLE; |
453c5420 JB |
1192 | |
1193 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1194 | ||
1195 | I915_WRITE(pp_ctrl_reg, pp); | |
1196 | POSTING_READ(pp_ctrl_reg); | |
f01eca2e | 1197 | msleep(intel_dp->backlight_off_delay); |
32f9d658 | 1198 | } |
a4fc5ed6 | 1199 | |
2bd2ad64 | 1200 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1201 | { |
da63a9f2 PZ |
1202 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1203 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1204 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1205 | struct drm_i915_private *dev_priv = dev->dev_private; |
1206 | u32 dpa_ctl; | |
1207 | ||
2bd2ad64 DV |
1208 | assert_pipe_disabled(dev_priv, |
1209 | to_intel_crtc(crtc)->pipe); | |
1210 | ||
d240f20f JB |
1211 | DRM_DEBUG_KMS("\n"); |
1212 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1213 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1214 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1215 | ||
1216 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1217 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1218 | * enable bits here to ensure that we don't enable too much. */ | |
1219 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1220 | intel_dp->DP |= DP_PLL_ENABLE; | |
1221 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1222 | POSTING_READ(DP_A); |
1223 | udelay(200); | |
d240f20f JB |
1224 | } |
1225 | ||
2bd2ad64 | 1226 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1227 | { |
da63a9f2 PZ |
1228 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1229 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1230 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1231 | struct drm_i915_private *dev_priv = dev->dev_private; |
1232 | u32 dpa_ctl; | |
1233 | ||
2bd2ad64 DV |
1234 | assert_pipe_disabled(dev_priv, |
1235 | to_intel_crtc(crtc)->pipe); | |
1236 | ||
d240f20f | 1237 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1238 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1239 | "dp pll off, should be on\n"); | |
1240 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1241 | ||
1242 | /* We can't rely on the value tracked for the DP register in | |
1243 | * intel_dp->DP because link_down must not change that (otherwise link | |
1244 | * re-training will fail. */ | |
298b0b39 | 1245 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1246 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1247 | POSTING_READ(DP_A); |
d240f20f JB |
1248 | udelay(200); |
1249 | } | |
1250 | ||
c7ad3810 | 1251 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1252 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1253 | { |
1254 | int ret, i; | |
1255 | ||
1256 | /* Should have a valid DPCD by this point */ | |
1257 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1258 | return; | |
1259 | ||
1260 | if (mode != DRM_MODE_DPMS_ON) { | |
1261 | ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER, | |
1262 | DP_SET_POWER_D3); | |
1263 | if (ret != 1) | |
1264 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1265 | } else { | |
1266 | /* | |
1267 | * When turning on, we need to retry for 1ms to give the sink | |
1268 | * time to wake up. | |
1269 | */ | |
1270 | for (i = 0; i < 3; i++) { | |
1271 | ret = intel_dp_aux_native_write_1(intel_dp, | |
1272 | DP_SET_POWER, | |
1273 | DP_SET_POWER_D0); | |
1274 | if (ret == 1) | |
1275 | break; | |
1276 | msleep(1); | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | ||
19d8fe15 DV |
1281 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1282 | enum pipe *pipe) | |
d240f20f | 1283 | { |
19d8fe15 | 1284 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1285 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1286 | struct drm_device *dev = encoder->base.dev; |
1287 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1288 | u32 tmp = I915_READ(intel_dp->output_reg); | |
1289 | ||
1290 | if (!(tmp & DP_PORT_EN)) | |
1291 | return false; | |
1292 | ||
bc7d38a4 | 1293 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1294 | *pipe = PORT_TO_PIPE_CPT(tmp); |
bc7d38a4 | 1295 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1296 | *pipe = PORT_TO_PIPE(tmp); |
1297 | } else { | |
1298 | u32 trans_sel; | |
1299 | u32 trans_dp; | |
1300 | int i; | |
1301 | ||
1302 | switch (intel_dp->output_reg) { | |
1303 | case PCH_DP_B: | |
1304 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1305 | break; | |
1306 | case PCH_DP_C: | |
1307 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1308 | break; | |
1309 | case PCH_DP_D: | |
1310 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1311 | break; | |
1312 | default: | |
1313 | return true; | |
1314 | } | |
1315 | ||
1316 | for_each_pipe(i) { | |
1317 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1318 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1319 | *pipe = i; | |
1320 | return true; | |
1321 | } | |
1322 | } | |
19d8fe15 | 1323 | |
4a0833ec DV |
1324 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1325 | intel_dp->output_reg); | |
1326 | } | |
d240f20f | 1327 | |
19d8fe15 DV |
1328 | return true; |
1329 | } | |
d240f20f | 1330 | |
045ac3b5 JB |
1331 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1332 | struct intel_crtc_config *pipe_config) | |
1333 | { | |
1334 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1335 | u32 tmp, flags = 0; |
63000ef6 XZ |
1336 | struct drm_device *dev = encoder->base.dev; |
1337 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1338 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1339 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
045ac3b5 | 1340 | |
63000ef6 XZ |
1341 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
1342 | tmp = I915_READ(intel_dp->output_reg); | |
1343 | if (tmp & DP_SYNC_HS_HIGH) | |
1344 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1345 | else | |
1346 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1347 | |
63000ef6 XZ |
1348 | if (tmp & DP_SYNC_VS_HIGH) |
1349 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1350 | else | |
1351 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1352 | } else { | |
1353 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1354 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1355 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1356 | else | |
1357 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1358 | |
63000ef6 XZ |
1359 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1360 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1361 | else | |
1362 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1363 | } | |
045ac3b5 JB |
1364 | |
1365 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc JB |
1366 | |
1367 | if (dp_to_dig_port(intel_dp)->port == PORT_A) { | |
1368 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) | |
1369 | pipe_config->port_clock = 162000; | |
1370 | else | |
1371 | pipe_config->port_clock = 270000; | |
1372 | } | |
045ac3b5 JB |
1373 | } |
1374 | ||
2293bb5c SK |
1375 | static bool is_edp_psr(struct intel_dp *intel_dp) |
1376 | { | |
1377 | return is_edp(intel_dp) && | |
1378 | intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; | |
1379 | } | |
1380 | ||
2b28bb1b RV |
1381 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1382 | { | |
1383 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1384 | ||
1385 | if (!IS_HASWELL(dev)) | |
1386 | return false; | |
1387 | ||
1388 | return I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE; | |
1389 | } | |
1390 | ||
1391 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1392 | struct edp_vsc_psr *vsc_psr) | |
1393 | { | |
1394 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1395 | struct drm_device *dev = dig_port->base.base.dev; | |
1396 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1397 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1398 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1399 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1400 | uint32_t *data = (uint32_t *) vsc_psr; | |
1401 | unsigned int i; | |
1402 | ||
1403 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1404 | the video DIP being updated before program video DIP data buffer | |
1405 | registers for DIP being updated. */ | |
1406 | I915_WRITE(ctl_reg, 0); | |
1407 | POSTING_READ(ctl_reg); | |
1408 | ||
1409 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1410 | if (i < sizeof(struct edp_vsc_psr)) | |
1411 | I915_WRITE(data_reg + i, *data++); | |
1412 | else | |
1413 | I915_WRITE(data_reg + i, 0); | |
1414 | } | |
1415 | ||
1416 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1417 | POSTING_READ(ctl_reg); | |
1418 | } | |
1419 | ||
1420 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
1421 | { | |
1422 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1423 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1424 | struct edp_vsc_psr psr_vsc; | |
1425 | ||
1426 | if (intel_dp->psr_setup_done) | |
1427 | return; | |
1428 | ||
1429 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ | |
1430 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
1431 | psr_vsc.sdp_header.HB0 = 0; | |
1432 | psr_vsc.sdp_header.HB1 = 0x7; | |
1433 | psr_vsc.sdp_header.HB2 = 0x2; | |
1434 | psr_vsc.sdp_header.HB3 = 0x8; | |
1435 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
1436 | ||
1437 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
1438 | I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP | | |
1439 | EDP_PSR_DEBUG_MASK_HPD); | |
1440 | ||
1441 | intel_dp->psr_setup_done = true; | |
1442 | } | |
1443 | ||
1444 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
1445 | { | |
1446 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1447 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1448 | uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp); | |
1449 | int precharge = 0x3; | |
1450 | int msg_size = 5; /* Header(4) + Message(1) */ | |
1451 | ||
1452 | /* Enable PSR in sink */ | |
1453 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) | |
1454 | intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG, | |
1455 | DP_PSR_ENABLE & | |
1456 | ~DP_PSR_MAIN_LINK_ACTIVE); | |
1457 | else | |
1458 | intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG, | |
1459 | DP_PSR_ENABLE | | |
1460 | DP_PSR_MAIN_LINK_ACTIVE); | |
1461 | ||
1462 | /* Setup AUX registers */ | |
1463 | I915_WRITE(EDP_PSR_AUX_DATA1, EDP_PSR_DPCD_COMMAND); | |
1464 | I915_WRITE(EDP_PSR_AUX_DATA2, EDP_PSR_DPCD_NORMAL_OPERATION); | |
1465 | I915_WRITE(EDP_PSR_AUX_CTL, | |
1466 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
1467 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
1468 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
1469 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
1470 | } | |
1471 | ||
1472 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
1473 | { | |
1474 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1475 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1476 | uint32_t max_sleep_time = 0x1f; | |
1477 | uint32_t idle_frames = 1; | |
1478 | uint32_t val = 0x0; | |
1479 | ||
1480 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) { | |
1481 | val |= EDP_PSR_LINK_STANDBY; | |
1482 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
1483 | val |= EDP_PSR_TP1_TIME_0us; | |
1484 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
1485 | } else | |
1486 | val |= EDP_PSR_LINK_DISABLE; | |
1487 | ||
1488 | I915_WRITE(EDP_PSR_CTL, val | | |
1489 | EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES | | |
1490 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | | |
1491 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
1492 | EDP_PSR_ENABLE); | |
1493 | } | |
1494 | ||
3f51e471 RV |
1495 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
1496 | { | |
1497 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1498 | struct drm_device *dev = dig_port->base.base.dev; | |
1499 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1500 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
1501 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1502 | struct drm_i915_gem_object *obj = to_intel_framebuffer(crtc->fb)->obj; | |
1503 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; | |
1504 | ||
1505 | if (!IS_HASWELL(dev)) { | |
1506 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
1507 | dev_priv->no_psr_reason = PSR_NO_SOURCE; | |
1508 | return false; | |
1509 | } | |
1510 | ||
1511 | if ((intel_encoder->type != INTEL_OUTPUT_EDP) || | |
1512 | (dig_port->port != PORT_A)) { | |
1513 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); | |
1514 | dev_priv->no_psr_reason = PSR_HSW_NOT_DDIA; | |
1515 | return false; | |
1516 | } | |
1517 | ||
1518 | if (!is_edp_psr(intel_dp)) { | |
1519 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
1520 | dev_priv->no_psr_reason = PSR_NO_SINK; | |
1521 | return false; | |
1522 | } | |
1523 | ||
105b7c11 RV |
1524 | if (!i915_enable_psr) { |
1525 | DRM_DEBUG_KMS("PSR disable by flag\n"); | |
1526 | dev_priv->no_psr_reason = PSR_MODULE_PARAM; | |
1527 | return false; | |
1528 | } | |
1529 | ||
3f51e471 RV |
1530 | if (!intel_crtc->active || !crtc->fb || !crtc->mode.clock) { |
1531 | DRM_DEBUG_KMS("crtc not active for PSR\n"); | |
1532 | dev_priv->no_psr_reason = PSR_CRTC_NOT_ACTIVE; | |
1533 | return false; | |
1534 | } | |
1535 | ||
1536 | if (obj->tiling_mode != I915_TILING_X || | |
1537 | obj->fence_reg == I915_FENCE_REG_NONE) { | |
1538 | DRM_DEBUG_KMS("PSR condition failed: fb not tiled or fenced\n"); | |
1539 | dev_priv->no_psr_reason = PSR_NOT_TILED; | |
1540 | return false; | |
1541 | } | |
1542 | ||
1543 | if (I915_READ(SPRCTL(intel_crtc->pipe)) & SPRITE_ENABLE) { | |
1544 | DRM_DEBUG_KMS("PSR condition failed: Sprite is Enabled\n"); | |
1545 | dev_priv->no_psr_reason = PSR_SPRITE_ENABLED; | |
1546 | return false; | |
1547 | } | |
1548 | ||
1549 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & | |
1550 | S3D_ENABLE) { | |
1551 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
1552 | dev_priv->no_psr_reason = PSR_S3D_ENABLED; | |
1553 | return false; | |
1554 | } | |
1555 | ||
1556 | if (crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) { | |
1557 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); | |
1558 | dev_priv->no_psr_reason = PSR_INTERLACED_ENABLED; | |
1559 | return false; | |
1560 | } | |
1561 | ||
1562 | return true; | |
1563 | } | |
1564 | ||
2b28bb1b RV |
1565 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
1566 | { | |
1567 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1568 | ||
3f51e471 RV |
1569 | if (!intel_edp_psr_match_conditions(intel_dp) || |
1570 | intel_edp_is_psr_enabled(dev)) | |
2b28bb1b RV |
1571 | return; |
1572 | ||
1573 | /* Setup PSR once */ | |
1574 | intel_edp_psr_setup(intel_dp); | |
1575 | ||
1576 | /* Enable PSR on the panel */ | |
1577 | intel_edp_psr_enable_sink(intel_dp); | |
1578 | ||
1579 | /* Enable PSR on the host */ | |
1580 | intel_edp_psr_enable_source(intel_dp); | |
1581 | } | |
1582 | ||
1583 | void intel_edp_psr_disable(struct intel_dp *intel_dp) | |
1584 | { | |
1585 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1586 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1587 | ||
1588 | if (!intel_edp_is_psr_enabled(dev)) | |
1589 | return; | |
1590 | ||
1591 | I915_WRITE(EDP_PSR_CTL, I915_READ(EDP_PSR_CTL) & ~EDP_PSR_ENABLE); | |
1592 | ||
1593 | /* Wait till PSR is idle */ | |
1594 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL) & | |
1595 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
1596 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
1597 | } | |
1598 | ||
e8cb4558 | 1599 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1600 | { |
e8cb4558 | 1601 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
1602 | enum port port = dp_to_dig_port(intel_dp)->port; |
1603 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
1604 | |
1605 | /* Make sure the panel is off before trying to change the mode. But also | |
1606 | * ensure that we have vdd while we switch off the panel. */ | |
1607 | ironlake_edp_panel_vdd_on(intel_dp); | |
21264c63 | 1608 | ironlake_edp_backlight_off(intel_dp); |
c7ad3810 | 1609 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
35a38556 | 1610 | ironlake_edp_panel_off(intel_dp); |
3739850b DV |
1611 | |
1612 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 1613 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 1614 | intel_dp_link_down(intel_dp); |
d240f20f JB |
1615 | } |
1616 | ||
2bd2ad64 | 1617 | static void intel_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1618 | { |
2bd2ad64 | 1619 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 1620 | enum port port = dp_to_dig_port(intel_dp)->port; |
b2634017 | 1621 | struct drm_device *dev = encoder->base.dev; |
2bd2ad64 | 1622 | |
982a3866 | 1623 | if (port == PORT_A || IS_VALLEYVIEW(dev)) { |
3739850b | 1624 | intel_dp_link_down(intel_dp); |
b2634017 JB |
1625 | if (!IS_VALLEYVIEW(dev)) |
1626 | ironlake_edp_pll_off(intel_dp); | |
3739850b | 1627 | } |
2bd2ad64 DV |
1628 | } |
1629 | ||
e8cb4558 | 1630 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 1631 | { |
e8cb4558 DV |
1632 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1633 | struct drm_device *dev = encoder->base.dev; | |
1634 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1635 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 1636 | |
0c33d8d7 DV |
1637 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
1638 | return; | |
5d613501 | 1639 | |
97af61f5 | 1640 | ironlake_edp_panel_vdd_on(intel_dp); |
f01eca2e | 1641 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 1642 | intel_dp_start_link_train(intel_dp); |
97af61f5 | 1643 | ironlake_edp_panel_on(intel_dp); |
bd943159 | 1644 | ironlake_edp_panel_vdd_off(intel_dp, true); |
33a34e4e | 1645 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 1646 | intel_dp_stop_link_train(intel_dp); |
f01eca2e | 1647 | ironlake_edp_backlight_on(intel_dp); |
89b667f8 JB |
1648 | |
1649 | if (IS_VALLEYVIEW(dev)) { | |
1650 | struct intel_digital_port *dport = | |
1651 | enc_to_dig_port(&encoder->base); | |
1652 | int channel = vlv_dport_to_channel(dport); | |
1653 | ||
1654 | vlv_wait_port_ready(dev_priv, channel); | |
1655 | } | |
d240f20f JB |
1656 | } |
1657 | ||
2bd2ad64 | 1658 | static void intel_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 1659 | { |
2bd2ad64 | 1660 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1661 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 1662 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 1663 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4fc5ed6 | 1664 | |
bc7d38a4 | 1665 | if (dport->port == PORT_A && !IS_VALLEYVIEW(dev)) |
2bd2ad64 | 1666 | ironlake_edp_pll_on(intel_dp); |
89b667f8 JB |
1667 | |
1668 | if (IS_VALLEYVIEW(dev)) { | |
89b667f8 JB |
1669 | struct intel_crtc *intel_crtc = |
1670 | to_intel_crtc(encoder->base.crtc); | |
1671 | int port = vlv_dport_to_channel(dport); | |
1672 | int pipe = intel_crtc->pipe; | |
1673 | u32 val; | |
1674 | ||
ae99258f | 1675 | val = vlv_dpio_read(dev_priv, DPIO_DATA_LANE_A(port)); |
89b667f8 JB |
1676 | val = 0; |
1677 | if (pipe) | |
1678 | val |= (1<<21); | |
1679 | else | |
1680 | val &= ~(1<<21); | |
1681 | val |= 0x001000c4; | |
ae99258f | 1682 | vlv_dpio_write(dev_priv, DPIO_DATA_CHANNEL(port), val); |
89b667f8 | 1683 | |
ae99258f | 1684 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF0(port), |
89b667f8 | 1685 | 0x00760018); |
ae99258f | 1686 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF8(port), |
89b667f8 JB |
1687 | 0x00400888); |
1688 | } | |
1689 | } | |
1690 | ||
1691 | static void intel_dp_pre_pll_enable(struct intel_encoder *encoder) | |
1692 | { | |
1693 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
1694 | struct drm_device *dev = encoder->base.dev; | |
1695 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1696 | int port = vlv_dport_to_channel(dport); | |
1697 | ||
1698 | if (!IS_VALLEYVIEW(dev)) | |
1699 | return; | |
1700 | ||
89b667f8 | 1701 | /* Program Tx lane resets to default */ |
ae99258f | 1702 | vlv_dpio_write(dev_priv, DPIO_PCS_TX(port), |
89b667f8 JB |
1703 | DPIO_PCS_TX_LANE2_RESET | |
1704 | DPIO_PCS_TX_LANE1_RESET); | |
ae99258f | 1705 | vlv_dpio_write(dev_priv, DPIO_PCS_CLK(port), |
89b667f8 JB |
1706 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
1707 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
1708 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
1709 | DPIO_PCS_CLK_SOFT_RESET); | |
1710 | ||
1711 | /* Fix up inter-pair skew failure */ | |
ae99258f JN |
1712 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER1(port), 0x00750f00); |
1713 | vlv_dpio_write(dev_priv, DPIO_TX_CTL(port), 0x00001500); | |
1714 | vlv_dpio_write(dev_priv, DPIO_TX_LANE(port), 0x40400000); | |
a4fc5ed6 KP |
1715 | } |
1716 | ||
1717 | /* | |
df0c237d JB |
1718 | * Native read with retry for link status and receiver capability reads for |
1719 | * cases where the sink may still be asleep. | |
a4fc5ed6 KP |
1720 | */ |
1721 | static bool | |
df0c237d JB |
1722 | intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address, |
1723 | uint8_t *recv, int recv_bytes) | |
a4fc5ed6 | 1724 | { |
61da5fab JB |
1725 | int ret, i; |
1726 | ||
df0c237d JB |
1727 | /* |
1728 | * Sinks are *supposed* to come up within 1ms from an off state, | |
1729 | * but we're also supposed to retry 3 times per the spec. | |
1730 | */ | |
61da5fab | 1731 | for (i = 0; i < 3; i++) { |
df0c237d JB |
1732 | ret = intel_dp_aux_native_read(intel_dp, address, recv, |
1733 | recv_bytes); | |
1734 | if (ret == recv_bytes) | |
61da5fab JB |
1735 | return true; |
1736 | msleep(1); | |
1737 | } | |
a4fc5ed6 | 1738 | |
61da5fab | 1739 | return false; |
a4fc5ed6 KP |
1740 | } |
1741 | ||
1742 | /* | |
1743 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
1744 | * link status information | |
1745 | */ | |
1746 | static bool | |
93f62dad | 1747 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 1748 | { |
df0c237d JB |
1749 | return intel_dp_aux_native_read_retry(intel_dp, |
1750 | DP_LANE0_1_STATUS, | |
93f62dad | 1751 | link_status, |
df0c237d | 1752 | DP_LINK_STATUS_SIZE); |
a4fc5ed6 KP |
1753 | } |
1754 | ||
a4fc5ed6 KP |
1755 | #if 0 |
1756 | static char *voltage_names[] = { | |
1757 | "0.4V", "0.6V", "0.8V", "1.2V" | |
1758 | }; | |
1759 | static char *pre_emph_names[] = { | |
1760 | "0dB", "3.5dB", "6dB", "9.5dB" | |
1761 | }; | |
1762 | static char *link_train_names[] = { | |
1763 | "pattern 1", "pattern 2", "idle", "off" | |
1764 | }; | |
1765 | #endif | |
1766 | ||
1767 | /* | |
1768 | * These are source-specific values; current Intel hardware supports | |
1769 | * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB | |
1770 | */ | |
a4fc5ed6 KP |
1771 | |
1772 | static uint8_t | |
1a2eb460 | 1773 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 1774 | { |
30add22d | 1775 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1776 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1777 | |
e2fa6fba P |
1778 | if (IS_VALLEYVIEW(dev)) |
1779 | return DP_TRAIN_VOLTAGE_SWING_1200; | |
bc7d38a4 | 1780 | else if (IS_GEN7(dev) && port == PORT_A) |
1a2eb460 | 1781 | return DP_TRAIN_VOLTAGE_SWING_800; |
bc7d38a4 | 1782 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
1a2eb460 KP |
1783 | return DP_TRAIN_VOLTAGE_SWING_1200; |
1784 | else | |
1785 | return DP_TRAIN_VOLTAGE_SWING_800; | |
1786 | } | |
1787 | ||
1788 | static uint8_t | |
1789 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
1790 | { | |
30add22d | 1791 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1792 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1793 | |
22b8bf17 | 1794 | if (HAS_DDI(dev)) { |
d6c0d722 PZ |
1795 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1796 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1797 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1798 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1799 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1800 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1801 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1802 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1803 | default: | |
1804 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1805 | } | |
e2fa6fba P |
1806 | } else if (IS_VALLEYVIEW(dev)) { |
1807 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1808 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1809 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1810 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1811 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1812 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1813 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1814 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1815 | default: | |
1816 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1817 | } | |
bc7d38a4 | 1818 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1819 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1820 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1821 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1822 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1823 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1824 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1825 | default: | |
1826 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1827 | } | |
1828 | } else { | |
1829 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1830 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1831 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1832 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1833 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1834 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1835 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1836 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1837 | default: | |
1838 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1839 | } | |
a4fc5ed6 KP |
1840 | } |
1841 | } | |
1842 | ||
e2fa6fba P |
1843 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
1844 | { | |
1845 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1846 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1847 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
1848 | unsigned long demph_reg_value, preemph_reg_value, | |
1849 | uniqtranscale_reg_value; | |
1850 | uint8_t train_set = intel_dp->train_set[0]; | |
cece5d58 | 1851 | int port = vlv_dport_to_channel(dport); |
e2fa6fba P |
1852 | |
1853 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
1854 | case DP_TRAIN_PRE_EMPHASIS_0: | |
1855 | preemph_reg_value = 0x0004000; | |
1856 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1857 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1858 | demph_reg_value = 0x2B405555; | |
1859 | uniqtranscale_reg_value = 0x552AB83A; | |
1860 | break; | |
1861 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1862 | demph_reg_value = 0x2B404040; | |
1863 | uniqtranscale_reg_value = 0x5548B83A; | |
1864 | break; | |
1865 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1866 | demph_reg_value = 0x2B245555; | |
1867 | uniqtranscale_reg_value = 0x5560B83A; | |
1868 | break; | |
1869 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1870 | demph_reg_value = 0x2B405555; | |
1871 | uniqtranscale_reg_value = 0x5598DA3A; | |
1872 | break; | |
1873 | default: | |
1874 | return 0; | |
1875 | } | |
1876 | break; | |
1877 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1878 | preemph_reg_value = 0x0002000; | |
1879 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1880 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1881 | demph_reg_value = 0x2B404040; | |
1882 | uniqtranscale_reg_value = 0x5552B83A; | |
1883 | break; | |
1884 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1885 | demph_reg_value = 0x2B404848; | |
1886 | uniqtranscale_reg_value = 0x5580B83A; | |
1887 | break; | |
1888 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1889 | demph_reg_value = 0x2B404040; | |
1890 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1891 | break; | |
1892 | default: | |
1893 | return 0; | |
1894 | } | |
1895 | break; | |
1896 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1897 | preemph_reg_value = 0x0000000; | |
1898 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1899 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1900 | demph_reg_value = 0x2B305555; | |
1901 | uniqtranscale_reg_value = 0x5570B83A; | |
1902 | break; | |
1903 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1904 | demph_reg_value = 0x2B2B4040; | |
1905 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1906 | break; | |
1907 | default: | |
1908 | return 0; | |
1909 | } | |
1910 | break; | |
1911 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
1912 | preemph_reg_value = 0x0006000; | |
1913 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1914 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1915 | demph_reg_value = 0x1B405555; | |
1916 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1917 | break; | |
1918 | default: | |
1919 | return 0; | |
1920 | } | |
1921 | break; | |
1922 | default: | |
1923 | return 0; | |
1924 | } | |
1925 | ||
ae99258f JN |
1926 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x00000000); |
1927 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL4(port), demph_reg_value); | |
1928 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL2(port), | |
e2fa6fba | 1929 | uniqtranscale_reg_value); |
ae99258f JN |
1930 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL3(port), 0x0C782040); |
1931 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER0(port), 0x00030000); | |
1932 | vlv_dpio_write(dev_priv, DPIO_PCS_CTL_OVER1(port), preemph_reg_value); | |
1933 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x80000000); | |
e2fa6fba P |
1934 | |
1935 | return 0; | |
1936 | } | |
1937 | ||
a4fc5ed6 | 1938 | static void |
93f62dad | 1939 | intel_get_adjust_train(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 KP |
1940 | { |
1941 | uint8_t v = 0; | |
1942 | uint8_t p = 0; | |
1943 | int lane; | |
1a2eb460 KP |
1944 | uint8_t voltage_max; |
1945 | uint8_t preemph_max; | |
a4fc5ed6 | 1946 | |
33a34e4e | 1947 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
1948 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
1949 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
1950 | |
1951 | if (this_v > v) | |
1952 | v = this_v; | |
1953 | if (this_p > p) | |
1954 | p = this_p; | |
1955 | } | |
1956 | ||
1a2eb460 | 1957 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
1958 | if (v >= voltage_max) |
1959 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 1960 | |
1a2eb460 KP |
1961 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
1962 | if (p >= preemph_max) | |
1963 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
1964 | |
1965 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 1966 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
1967 | } |
1968 | ||
1969 | static uint32_t | |
f0a3424e | 1970 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 1971 | { |
3cf2efb1 | 1972 | uint32_t signal_levels = 0; |
a4fc5ed6 | 1973 | |
3cf2efb1 | 1974 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
1975 | case DP_TRAIN_VOLTAGE_SWING_400: |
1976 | default: | |
1977 | signal_levels |= DP_VOLTAGE_0_4; | |
1978 | break; | |
1979 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1980 | signal_levels |= DP_VOLTAGE_0_6; | |
1981 | break; | |
1982 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1983 | signal_levels |= DP_VOLTAGE_0_8; | |
1984 | break; | |
1985 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1986 | signal_levels |= DP_VOLTAGE_1_2; | |
1987 | break; | |
1988 | } | |
3cf2efb1 | 1989 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
1990 | case DP_TRAIN_PRE_EMPHASIS_0: |
1991 | default: | |
1992 | signal_levels |= DP_PRE_EMPHASIS_0; | |
1993 | break; | |
1994 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1995 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
1996 | break; | |
1997 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1998 | signal_levels |= DP_PRE_EMPHASIS_6; | |
1999 | break; | |
2000 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2001 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
2002 | break; | |
2003 | } | |
2004 | return signal_levels; | |
2005 | } | |
2006 | ||
e3421a18 ZW |
2007 | /* Gen6's DP voltage swing and pre-emphasis control */ |
2008 | static uint32_t | |
2009 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
2010 | { | |
3c5a62b5 YL |
2011 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2012 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2013 | switch (signal_levels) { | |
e3421a18 | 2014 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2015 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2016 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
2017 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2018 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 2019 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
2020 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
2021 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 2022 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
2023 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
2024 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 2025 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2026 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
2027 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 2028 | default: |
3c5a62b5 YL |
2029 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
2030 | "0x%x\n", signal_levels); | |
2031 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
2032 | } |
2033 | } | |
2034 | ||
1a2eb460 KP |
2035 | /* Gen7's DP voltage swing and pre-emphasis control */ |
2036 | static uint32_t | |
2037 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
2038 | { | |
2039 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
2040 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2041 | switch (signal_levels) { | |
2042 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2043 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
2044 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2045 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
2046 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2047 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
2048 | ||
2049 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
2050 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
2051 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2052 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
2053 | ||
2054 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
2055 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
2056 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2057 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
2058 | ||
2059 | default: | |
2060 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2061 | "0x%x\n", signal_levels); | |
2062 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
2063 | } | |
2064 | } | |
2065 | ||
d6c0d722 PZ |
2066 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
2067 | static uint32_t | |
f0a3424e | 2068 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2069 | { |
d6c0d722 PZ |
2070 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2071 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2072 | switch (signal_levels) { | |
2073 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2074 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
2075 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2076 | return DDI_BUF_EMP_400MV_3_5DB_HSW; | |
2077 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2078 | return DDI_BUF_EMP_400MV_6DB_HSW; | |
2079 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: | |
2080 | return DDI_BUF_EMP_400MV_9_5DB_HSW; | |
a4fc5ed6 | 2081 | |
d6c0d722 PZ |
2082 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2083 | return DDI_BUF_EMP_600MV_0DB_HSW; | |
2084 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2085 | return DDI_BUF_EMP_600MV_3_5DB_HSW; | |
2086 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: | |
2087 | return DDI_BUF_EMP_600MV_6DB_HSW; | |
a4fc5ed6 | 2088 | |
d6c0d722 PZ |
2089 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
2090 | return DDI_BUF_EMP_800MV_0DB_HSW; | |
2091 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2092 | return DDI_BUF_EMP_800MV_3_5DB_HSW; | |
2093 | default: | |
2094 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2095 | "0x%x\n", signal_levels); | |
2096 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
a4fc5ed6 | 2097 | } |
a4fc5ed6 KP |
2098 | } |
2099 | ||
f0a3424e PZ |
2100 | /* Properly updates "DP" with the correct signal levels. */ |
2101 | static void | |
2102 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
2103 | { | |
2104 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 2105 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
2106 | struct drm_device *dev = intel_dig_port->base.base.dev; |
2107 | uint32_t signal_levels, mask; | |
2108 | uint8_t train_set = intel_dp->train_set[0]; | |
2109 | ||
22b8bf17 | 2110 | if (HAS_DDI(dev)) { |
f0a3424e PZ |
2111 | signal_levels = intel_hsw_signal_levels(train_set); |
2112 | mask = DDI_BUF_EMP_MASK; | |
e2fa6fba P |
2113 | } else if (IS_VALLEYVIEW(dev)) { |
2114 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
2115 | mask = 0; | |
bc7d38a4 | 2116 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
2117 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
2118 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 2119 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
2120 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
2121 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
2122 | } else { | |
2123 | signal_levels = intel_gen4_signal_levels(train_set); | |
2124 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
2125 | } | |
2126 | ||
2127 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
2128 | ||
2129 | *DP = (*DP & ~mask) | signal_levels; | |
2130 | } | |
2131 | ||
a4fc5ed6 | 2132 | static bool |
ea5b213a | 2133 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
a4fc5ed6 | 2134 | uint32_t dp_reg_value, |
58e10eb9 | 2135 | uint8_t dp_train_pat) |
a4fc5ed6 | 2136 | { |
174edf1f PZ |
2137 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2138 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 2139 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 2140 | enum port port = intel_dig_port->port; |
a4fc5ed6 KP |
2141 | int ret; |
2142 | ||
22b8bf17 | 2143 | if (HAS_DDI(dev)) { |
3ab9c637 | 2144 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
2145 | |
2146 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2147 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2148 | else | |
2149 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2150 | ||
2151 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2152 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2153 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
2154 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
2155 | ||
2156 | break; | |
2157 | case DP_TRAINING_PATTERN_1: | |
2158 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2159 | break; | |
2160 | case DP_TRAINING_PATTERN_2: | |
2161 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2162 | break; | |
2163 | case DP_TRAINING_PATTERN_3: | |
2164 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2165 | break; | |
2166 | } | |
174edf1f | 2167 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 2168 | |
bc7d38a4 | 2169 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
47ea7542 PZ |
2170 | dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT; |
2171 | ||
2172 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2173 | case DP_TRAINING_PATTERN_DISABLE: | |
2174 | dp_reg_value |= DP_LINK_TRAIN_OFF_CPT; | |
2175 | break; | |
2176 | case DP_TRAINING_PATTERN_1: | |
2177 | dp_reg_value |= DP_LINK_TRAIN_PAT_1_CPT; | |
2178 | break; | |
2179 | case DP_TRAINING_PATTERN_2: | |
2180 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
2181 | break; | |
2182 | case DP_TRAINING_PATTERN_3: | |
2183 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2184 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
2185 | break; | |
2186 | } | |
2187 | ||
2188 | } else { | |
2189 | dp_reg_value &= ~DP_LINK_TRAIN_MASK; | |
2190 | ||
2191 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2192 | case DP_TRAINING_PATTERN_DISABLE: | |
2193 | dp_reg_value |= DP_LINK_TRAIN_OFF; | |
2194 | break; | |
2195 | case DP_TRAINING_PATTERN_1: | |
2196 | dp_reg_value |= DP_LINK_TRAIN_PAT_1; | |
2197 | break; | |
2198 | case DP_TRAINING_PATTERN_2: | |
2199 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
2200 | break; | |
2201 | case DP_TRAINING_PATTERN_3: | |
2202 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2203 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
2204 | break; | |
2205 | } | |
2206 | } | |
2207 | ||
ea5b213a CW |
2208 | I915_WRITE(intel_dp->output_reg, dp_reg_value); |
2209 | POSTING_READ(intel_dp->output_reg); | |
a4fc5ed6 | 2210 | |
ea5b213a | 2211 | intel_dp_aux_native_write_1(intel_dp, |
a4fc5ed6 KP |
2212 | DP_TRAINING_PATTERN_SET, |
2213 | dp_train_pat); | |
2214 | ||
47ea7542 PZ |
2215 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) != |
2216 | DP_TRAINING_PATTERN_DISABLE) { | |
2217 | ret = intel_dp_aux_native_write(intel_dp, | |
2218 | DP_TRAINING_LANE0_SET, | |
2219 | intel_dp->train_set, | |
2220 | intel_dp->lane_count); | |
2221 | if (ret != intel_dp->lane_count) | |
2222 | return false; | |
2223 | } | |
a4fc5ed6 KP |
2224 | |
2225 | return true; | |
2226 | } | |
2227 | ||
3ab9c637 ID |
2228 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
2229 | { | |
2230 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2231 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2232 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2233 | enum port port = intel_dig_port->port; | |
2234 | uint32_t val; | |
2235 | ||
2236 | if (!HAS_DDI(dev)) | |
2237 | return; | |
2238 | ||
2239 | val = I915_READ(DP_TP_CTL(port)); | |
2240 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2241 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
2242 | I915_WRITE(DP_TP_CTL(port), val); | |
2243 | ||
2244 | /* | |
2245 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
2246 | * we need to set idle transmission mode is to work around a HW issue | |
2247 | * where we enable the pipe while not in idle link-training mode. | |
2248 | * In this case there is requirement to wait for a minimum number of | |
2249 | * idle patterns to be sent. | |
2250 | */ | |
2251 | if (port == PORT_A) | |
2252 | return; | |
2253 | ||
2254 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
2255 | 1)) | |
2256 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
2257 | } | |
2258 | ||
33a34e4e | 2259 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 2260 | void |
33a34e4e | 2261 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 2262 | { |
da63a9f2 | 2263 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 2264 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
2265 | int i; |
2266 | uint8_t voltage; | |
2267 | bool clock_recovery = false; | |
cdb0e95b | 2268 | int voltage_tries, loop_tries; |
ea5b213a | 2269 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2270 | |
affa9354 | 2271 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2272 | intel_ddi_prepare_link_retrain(encoder); |
2273 | ||
3cf2efb1 CW |
2274 | /* Write the link configuration data */ |
2275 | intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, | |
2276 | intel_dp->link_configuration, | |
2277 | DP_LINK_CONFIGURATION_SIZE); | |
a4fc5ed6 KP |
2278 | |
2279 | DP |= DP_PORT_EN; | |
1a2eb460 | 2280 | |
33a34e4e | 2281 | memset(intel_dp->train_set, 0, 4); |
a4fc5ed6 | 2282 | voltage = 0xff; |
cdb0e95b KP |
2283 | voltage_tries = 0; |
2284 | loop_tries = 0; | |
a4fc5ed6 KP |
2285 | clock_recovery = false; |
2286 | for (;;) { | |
33a34e4e | 2287 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ |
93f62dad | 2288 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
f0a3424e PZ |
2289 | |
2290 | intel_dp_set_signal_levels(intel_dp, &DP); | |
a4fc5ed6 | 2291 | |
a7c9655f | 2292 | /* Set training pattern 1 */ |
47ea7542 | 2293 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2294 | DP_TRAINING_PATTERN_1 | |
2295 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 | 2296 | break; |
a4fc5ed6 | 2297 | |
a7c9655f | 2298 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
2299 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
2300 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 2301 | break; |
93f62dad | 2302 | } |
a4fc5ed6 | 2303 | |
01916270 | 2304 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 2305 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
2306 | clock_recovery = true; |
2307 | break; | |
2308 | } | |
2309 | ||
2310 | /* Check to see if we've tried the max voltage */ | |
2311 | for (i = 0; i < intel_dp->lane_count; i++) | |
2312 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 2313 | break; |
3b4f819d | 2314 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
2315 | ++loop_tries; |
2316 | if (loop_tries == 5) { | |
cdb0e95b KP |
2317 | DRM_DEBUG_KMS("too many full retries, give up\n"); |
2318 | break; | |
2319 | } | |
2320 | memset(intel_dp->train_set, 0, 4); | |
2321 | voltage_tries = 0; | |
2322 | continue; | |
2323 | } | |
a4fc5ed6 | 2324 | |
3cf2efb1 | 2325 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 2326 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 2327 | ++voltage_tries; |
b06fbda3 DV |
2328 | if (voltage_tries == 5) { |
2329 | DRM_DEBUG_KMS("too many voltage retries, give up\n"); | |
2330 | break; | |
2331 | } | |
2332 | } else | |
2333 | voltage_tries = 0; | |
2334 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 2335 | |
3cf2efb1 | 2336 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2337 | intel_get_adjust_train(intel_dp, link_status); |
a4fc5ed6 KP |
2338 | } |
2339 | ||
33a34e4e JB |
2340 | intel_dp->DP = DP; |
2341 | } | |
2342 | ||
c19b0669 | 2343 | void |
33a34e4e JB |
2344 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
2345 | { | |
33a34e4e | 2346 | bool channel_eq = false; |
37f80975 | 2347 | int tries, cr_tries; |
33a34e4e JB |
2348 | uint32_t DP = intel_dp->DP; |
2349 | ||
a4fc5ed6 KP |
2350 | /* channel equalization */ |
2351 | tries = 0; | |
37f80975 | 2352 | cr_tries = 0; |
a4fc5ed6 KP |
2353 | channel_eq = false; |
2354 | for (;;) { | |
93f62dad | 2355 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 2356 | |
37f80975 JB |
2357 | if (cr_tries > 5) { |
2358 | DRM_ERROR("failed to train DP, aborting\n"); | |
2359 | intel_dp_link_down(intel_dp); | |
2360 | break; | |
2361 | } | |
2362 | ||
f0a3424e | 2363 | intel_dp_set_signal_levels(intel_dp, &DP); |
e3421a18 | 2364 | |
a4fc5ed6 | 2365 | /* channel eq pattern */ |
47ea7542 | 2366 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2367 | DP_TRAINING_PATTERN_2 | |
2368 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 KP |
2369 | break; |
2370 | ||
a7c9655f | 2371 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
93f62dad | 2372 | if (!intel_dp_get_link_status(intel_dp, link_status)) |
a4fc5ed6 | 2373 | break; |
a4fc5ed6 | 2374 | |
37f80975 | 2375 | /* Make sure clock is still ok */ |
01916270 | 2376 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 JB |
2377 | intel_dp_start_link_train(intel_dp); |
2378 | cr_tries++; | |
2379 | continue; | |
2380 | } | |
2381 | ||
1ffdff13 | 2382 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
2383 | channel_eq = true; |
2384 | break; | |
2385 | } | |
a4fc5ed6 | 2386 | |
37f80975 JB |
2387 | /* Try 5 times, then try clock recovery if that fails */ |
2388 | if (tries > 5) { | |
2389 | intel_dp_link_down(intel_dp); | |
2390 | intel_dp_start_link_train(intel_dp); | |
2391 | tries = 0; | |
2392 | cr_tries++; | |
2393 | continue; | |
2394 | } | |
a4fc5ed6 | 2395 | |
3cf2efb1 | 2396 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2397 | intel_get_adjust_train(intel_dp, link_status); |
3cf2efb1 | 2398 | ++tries; |
869184a6 | 2399 | } |
3cf2efb1 | 2400 | |
3ab9c637 ID |
2401 | intel_dp_set_idle_link_train(intel_dp); |
2402 | ||
2403 | intel_dp->DP = DP; | |
2404 | ||
d6c0d722 | 2405 | if (channel_eq) |
07f42258 | 2406 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 2407 | |
3ab9c637 ID |
2408 | } |
2409 | ||
2410 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
2411 | { | |
2412 | intel_dp_set_link_train(intel_dp, intel_dp->DP, | |
2413 | DP_TRAINING_PATTERN_DISABLE); | |
a4fc5ed6 KP |
2414 | } |
2415 | ||
2416 | static void | |
ea5b213a | 2417 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 2418 | { |
da63a9f2 | 2419 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 2420 | enum port port = intel_dig_port->port; |
da63a9f2 | 2421 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 2422 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
2423 | struct intel_crtc *intel_crtc = |
2424 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 2425 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2426 | |
c19b0669 PZ |
2427 | /* |
2428 | * DDI code has a strict mode set sequence and we should try to respect | |
2429 | * it, otherwise we might hang the machine in many different ways. So we | |
2430 | * really should be disabling the port only on a complete crtc_disable | |
2431 | * sequence. This function is just called under two conditions on DDI | |
2432 | * code: | |
2433 | * - Link train failed while doing crtc_enable, and on this case we | |
2434 | * really should respect the mode set sequence and wait for a | |
2435 | * crtc_disable. | |
2436 | * - Someone turned the monitor off and intel_dp_check_link_status | |
2437 | * called us. We don't need to disable the whole port on this case, so | |
2438 | * when someone turns the monitor on again, | |
2439 | * intel_ddi_prepare_link_retrain will take care of redoing the link | |
2440 | * train. | |
2441 | */ | |
affa9354 | 2442 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2443 | return; |
2444 | ||
0c33d8d7 | 2445 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
2446 | return; |
2447 | ||
28c97730 | 2448 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 2449 | |
bc7d38a4 | 2450 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 2451 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 2452 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 ZW |
2453 | } else { |
2454 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 2455 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 2456 | } |
fe255d00 | 2457 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 2458 | |
ab527efc DV |
2459 | /* We don't really know why we're doing this */ |
2460 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
5eb08b69 | 2461 | |
493a7081 | 2462 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 2463 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 2464 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 2465 | |
5bddd17f EA |
2466 | /* Hardware workaround: leaving our transcoder select |
2467 | * set to transcoder B while it's off will prevent the | |
2468 | * corresponding HDMI output on transcoder A. | |
2469 | * | |
2470 | * Combine this with another hardware workaround: | |
2471 | * transcoder select bit can only be cleared while the | |
2472 | * port is enabled. | |
2473 | */ | |
2474 | DP &= ~DP_PIPEB_SELECT; | |
2475 | I915_WRITE(intel_dp->output_reg, DP); | |
2476 | ||
2477 | /* Changes to enable or select take place the vblank | |
2478 | * after being written. | |
2479 | */ | |
ff50afe9 DV |
2480 | if (WARN_ON(crtc == NULL)) { |
2481 | /* We should never try to disable a port without a crtc | |
2482 | * attached. For paranoia keep the code around for a | |
2483 | * bit. */ | |
31acbcc4 CW |
2484 | POSTING_READ(intel_dp->output_reg); |
2485 | msleep(50); | |
2486 | } else | |
ab527efc | 2487 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
2488 | } |
2489 | ||
832afda6 | 2490 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
2491 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
2492 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 2493 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
2494 | } |
2495 | ||
26d61aad KP |
2496 | static bool |
2497 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 2498 | { |
577c7a50 DL |
2499 | char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3]; |
2500 | ||
92fd8fd1 | 2501 | if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd, |
edb39244 AJ |
2502 | sizeof(intel_dp->dpcd)) == 0) |
2503 | return false; /* aux transfer failed */ | |
92fd8fd1 | 2504 | |
577c7a50 DL |
2505 | hex_dump_to_buffer(intel_dp->dpcd, sizeof(intel_dp->dpcd), |
2506 | 32, 1, dpcd_hex_dump, sizeof(dpcd_hex_dump), false); | |
2507 | DRM_DEBUG_KMS("DPCD: %s\n", dpcd_hex_dump); | |
2508 | ||
edb39244 AJ |
2509 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
2510 | return false; /* DPCD not present */ | |
2511 | ||
2293bb5c SK |
2512 | /* Check if the panel supports PSR */ |
2513 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
2514 | intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, | |
2515 | intel_dp->psr_dpcd, | |
2516 | sizeof(intel_dp->psr_dpcd)); | |
2517 | if (is_edp_psr(intel_dp)) | |
2518 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); | |
edb39244 AJ |
2519 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
2520 | DP_DWN_STRM_PORT_PRESENT)) | |
2521 | return true; /* native DP sink */ | |
2522 | ||
2523 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
2524 | return true; /* no per-port downstream info */ | |
2525 | ||
2526 | if (intel_dp_aux_native_read_retry(intel_dp, DP_DOWNSTREAM_PORT_0, | |
2527 | intel_dp->downstream_ports, | |
2528 | DP_MAX_DOWNSTREAM_PORTS) == 0) | |
2529 | return false; /* downstream port status fetch failed */ | |
2530 | ||
2531 | return true; | |
92fd8fd1 KP |
2532 | } |
2533 | ||
0d198328 AJ |
2534 | static void |
2535 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
2536 | { | |
2537 | u8 buf[3]; | |
2538 | ||
2539 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
2540 | return; | |
2541 | ||
351cfc34 DV |
2542 | ironlake_edp_panel_vdd_on(intel_dp); |
2543 | ||
0d198328 AJ |
2544 | if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3)) |
2545 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", | |
2546 | buf[0], buf[1], buf[2]); | |
2547 | ||
2548 | if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3)) | |
2549 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", | |
2550 | buf[0], buf[1], buf[2]); | |
351cfc34 DV |
2551 | |
2552 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
0d198328 AJ |
2553 | } |
2554 | ||
a60f0e38 JB |
2555 | static bool |
2556 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
2557 | { | |
2558 | int ret; | |
2559 | ||
2560 | ret = intel_dp_aux_native_read_retry(intel_dp, | |
2561 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2562 | sink_irq_vector, 1); | |
2563 | if (!ret) | |
2564 | return false; | |
2565 | ||
2566 | return true; | |
2567 | } | |
2568 | ||
2569 | static void | |
2570 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
2571 | { | |
2572 | /* NAK by default */ | |
9324cf7f | 2573 | intel_dp_aux_native_write_1(intel_dp, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
2574 | } |
2575 | ||
a4fc5ed6 KP |
2576 | /* |
2577 | * According to DP spec | |
2578 | * 5.1.2: | |
2579 | * 1. Read DPCD | |
2580 | * 2. Configure link according to Receiver Capabilities | |
2581 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
2582 | * 4. Check link status on receipt of hot-plug interrupt | |
2583 | */ | |
2584 | ||
00c09d70 | 2585 | void |
ea5b213a | 2586 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 2587 | { |
da63a9f2 | 2588 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 2589 | u8 sink_irq_vector; |
93f62dad | 2590 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 2591 | |
da63a9f2 | 2592 | if (!intel_encoder->connectors_active) |
d2b996ac | 2593 | return; |
59cd09e1 | 2594 | |
da63a9f2 | 2595 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
2596 | return; |
2597 | ||
92fd8fd1 | 2598 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 2599 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
ea5b213a | 2600 | intel_dp_link_down(intel_dp); |
a4fc5ed6 KP |
2601 | return; |
2602 | } | |
2603 | ||
92fd8fd1 | 2604 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 2605 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
2606 | intel_dp_link_down(intel_dp); |
2607 | return; | |
2608 | } | |
2609 | ||
a60f0e38 JB |
2610 | /* Try to read the source of the interrupt */ |
2611 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
2612 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
2613 | /* Clear interrupt source */ | |
2614 | intel_dp_aux_native_write_1(intel_dp, | |
2615 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2616 | sink_irq_vector); | |
2617 | ||
2618 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
2619 | intel_dp_handle_test_request(intel_dp); | |
2620 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
2621 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
2622 | } | |
2623 | ||
1ffdff13 | 2624 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 2625 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
da63a9f2 | 2626 | drm_get_encoder_name(&intel_encoder->base)); |
33a34e4e JB |
2627 | intel_dp_start_link_train(intel_dp); |
2628 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 2629 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 2630 | } |
a4fc5ed6 | 2631 | } |
a4fc5ed6 | 2632 | |
caf9ab24 | 2633 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 2634 | static enum drm_connector_status |
26d61aad | 2635 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 2636 | { |
caf9ab24 AJ |
2637 | uint8_t *dpcd = intel_dp->dpcd; |
2638 | bool hpd; | |
2639 | uint8_t type; | |
2640 | ||
2641 | if (!intel_dp_get_dpcd(intel_dp)) | |
2642 | return connector_status_disconnected; | |
2643 | ||
2644 | /* if there's no downstream port, we're done */ | |
2645 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 2646 | return connector_status_connected; |
caf9ab24 AJ |
2647 | |
2648 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
2649 | hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD); | |
2650 | if (hpd) { | |
23235177 | 2651 | uint8_t reg; |
caf9ab24 | 2652 | if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT, |
23235177 | 2653 | ®, 1)) |
caf9ab24 | 2654 | return connector_status_unknown; |
23235177 AJ |
2655 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
2656 | : connector_status_disconnected; | |
caf9ab24 AJ |
2657 | } |
2658 | ||
2659 | /* If no HPD, poke DDC gently */ | |
2660 | if (drm_probe_ddc(&intel_dp->adapter)) | |
26d61aad | 2661 | return connector_status_connected; |
caf9ab24 AJ |
2662 | |
2663 | /* Well we tried, say unknown for unreliable port types */ | |
2664 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
2665 | if (type == DP_DS_PORT_TYPE_VGA || type == DP_DS_PORT_TYPE_NON_EDID) | |
2666 | return connector_status_unknown; | |
2667 | ||
2668 | /* Anything else is out of spec, warn and ignore */ | |
2669 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 2670 | return connector_status_disconnected; |
71ba9000 AJ |
2671 | } |
2672 | ||
5eb08b69 | 2673 | static enum drm_connector_status |
a9756bb5 | 2674 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 2675 | { |
30add22d | 2676 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
2677 | struct drm_i915_private *dev_priv = dev->dev_private; |
2678 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5eb08b69 ZW |
2679 | enum drm_connector_status status; |
2680 | ||
fe16d949 CW |
2681 | /* Can't disconnect eDP, but you can close the lid... */ |
2682 | if (is_edp(intel_dp)) { | |
30add22d | 2683 | status = intel_panel_detect(dev); |
fe16d949 CW |
2684 | if (status == connector_status_unknown) |
2685 | status = connector_status_connected; | |
2686 | return status; | |
2687 | } | |
01cb9ea6 | 2688 | |
1b469639 DL |
2689 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
2690 | return connector_status_disconnected; | |
2691 | ||
26d61aad | 2692 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
2693 | } |
2694 | ||
a4fc5ed6 | 2695 | static enum drm_connector_status |
a9756bb5 | 2696 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 2697 | { |
30add22d | 2698 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 2699 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 2700 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 2701 | uint32_t bit; |
5eb08b69 | 2702 | |
35aad75f JB |
2703 | /* Can't disconnect eDP, but you can close the lid... */ |
2704 | if (is_edp(intel_dp)) { | |
2705 | enum drm_connector_status status; | |
2706 | ||
2707 | status = intel_panel_detect(dev); | |
2708 | if (status == connector_status_unknown) | |
2709 | status = connector_status_connected; | |
2710 | return status; | |
2711 | } | |
2712 | ||
34f2be46 VS |
2713 | switch (intel_dig_port->port) { |
2714 | case PORT_B: | |
26739f12 | 2715 | bit = PORTB_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2716 | break; |
34f2be46 | 2717 | case PORT_C: |
26739f12 | 2718 | bit = PORTC_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2719 | break; |
34f2be46 | 2720 | case PORT_D: |
26739f12 | 2721 | bit = PORTD_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2722 | break; |
2723 | default: | |
2724 | return connector_status_unknown; | |
2725 | } | |
2726 | ||
10f76a38 | 2727 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
2728 | return connector_status_disconnected; |
2729 | ||
26d61aad | 2730 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
2731 | } |
2732 | ||
8c241fef KP |
2733 | static struct edid * |
2734 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2735 | { | |
9cd300e0 | 2736 | struct intel_connector *intel_connector = to_intel_connector(connector); |
d6f24d0f | 2737 | |
9cd300e0 JN |
2738 | /* use cached edid if we have one */ |
2739 | if (intel_connector->edid) { | |
2740 | struct edid *edid; | |
2741 | int size; | |
2742 | ||
2743 | /* invalid edid */ | |
2744 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
2745 | return NULL; |
2746 | ||
9cd300e0 | 2747 | size = (intel_connector->edid->extensions + 1) * EDID_LENGTH; |
edbe1581 | 2748 | edid = kmemdup(intel_connector->edid, size, GFP_KERNEL); |
d6f24d0f JB |
2749 | if (!edid) |
2750 | return NULL; | |
2751 | ||
d6f24d0f JB |
2752 | return edid; |
2753 | } | |
8c241fef | 2754 | |
9cd300e0 | 2755 | return drm_get_edid(connector, adapter); |
8c241fef KP |
2756 | } |
2757 | ||
2758 | static int | |
2759 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2760 | { | |
9cd300e0 | 2761 | struct intel_connector *intel_connector = to_intel_connector(connector); |
8c241fef | 2762 | |
9cd300e0 JN |
2763 | /* use cached edid if we have one */ |
2764 | if (intel_connector->edid) { | |
2765 | /* invalid edid */ | |
2766 | if (IS_ERR(intel_connector->edid)) | |
2767 | return 0; | |
2768 | ||
2769 | return intel_connector_update_modes(connector, | |
2770 | intel_connector->edid); | |
d6f24d0f JB |
2771 | } |
2772 | ||
9cd300e0 | 2773 | return intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
2774 | } |
2775 | ||
a9756bb5 ZW |
2776 | static enum drm_connector_status |
2777 | intel_dp_detect(struct drm_connector *connector, bool force) | |
2778 | { | |
2779 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
2780 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2781 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 2782 | struct drm_device *dev = connector->dev; |
a9756bb5 ZW |
2783 | enum drm_connector_status status; |
2784 | struct edid *edid = NULL; | |
2785 | ||
2786 | intel_dp->has_audio = false; | |
2787 | ||
2788 | if (HAS_PCH_SPLIT(dev)) | |
2789 | status = ironlake_dp_detect(intel_dp); | |
2790 | else | |
2791 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 2792 | |
a9756bb5 ZW |
2793 | if (status != connector_status_connected) |
2794 | return status; | |
2795 | ||
0d198328 AJ |
2796 | intel_dp_probe_oui(intel_dp); |
2797 | ||
c3e5f67b DV |
2798 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
2799 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 2800 | } else { |
8c241fef | 2801 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
f684960e CW |
2802 | if (edid) { |
2803 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
2804 | kfree(edid); |
2805 | } | |
a9756bb5 ZW |
2806 | } |
2807 | ||
d63885da PZ |
2808 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
2809 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
a9756bb5 | 2810 | return connector_status_connected; |
a4fc5ed6 KP |
2811 | } |
2812 | ||
2813 | static int intel_dp_get_modes(struct drm_connector *connector) | |
2814 | { | |
df0e9248 | 2815 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e | 2816 | struct intel_connector *intel_connector = to_intel_connector(connector); |
fa90ecef | 2817 | struct drm_device *dev = connector->dev; |
32f9d658 | 2818 | int ret; |
a4fc5ed6 KP |
2819 | |
2820 | /* We should parse the EDID data and find out if it has an audio sink | |
2821 | */ | |
2822 | ||
8c241fef | 2823 | ret = intel_dp_get_edid_modes(connector, &intel_dp->adapter); |
f8779fda | 2824 | if (ret) |
32f9d658 ZW |
2825 | return ret; |
2826 | ||
f8779fda | 2827 | /* if eDP has no EDID, fall back to fixed mode */ |
dd06f90e | 2828 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
f8779fda | 2829 | struct drm_display_mode *mode; |
dd06f90e JN |
2830 | mode = drm_mode_duplicate(dev, |
2831 | intel_connector->panel.fixed_mode); | |
f8779fda | 2832 | if (mode) { |
32f9d658 ZW |
2833 | drm_mode_probed_add(connector, mode); |
2834 | return 1; | |
2835 | } | |
2836 | } | |
2837 | return 0; | |
a4fc5ed6 KP |
2838 | } |
2839 | ||
1aad7ac0 CW |
2840 | static bool |
2841 | intel_dp_detect_audio(struct drm_connector *connector) | |
2842 | { | |
2843 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2844 | struct edid *edid; | |
2845 | bool has_audio = false; | |
2846 | ||
8c241fef | 2847 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
1aad7ac0 CW |
2848 | if (edid) { |
2849 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
2850 | kfree(edid); |
2851 | } | |
2852 | ||
2853 | return has_audio; | |
2854 | } | |
2855 | ||
f684960e CW |
2856 | static int |
2857 | intel_dp_set_property(struct drm_connector *connector, | |
2858 | struct drm_property *property, | |
2859 | uint64_t val) | |
2860 | { | |
e953fd7b | 2861 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 2862 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
2863 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
2864 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
2865 | int ret; |
2866 | ||
662595df | 2867 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
2868 | if (ret) |
2869 | return ret; | |
2870 | ||
3f43c48d | 2871 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
2872 | int i = val; |
2873 | bool has_audio; | |
2874 | ||
2875 | if (i == intel_dp->force_audio) | |
f684960e CW |
2876 | return 0; |
2877 | ||
1aad7ac0 | 2878 | intel_dp->force_audio = i; |
f684960e | 2879 | |
c3e5f67b | 2880 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
2881 | has_audio = intel_dp_detect_audio(connector); |
2882 | else | |
c3e5f67b | 2883 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
2884 | |
2885 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
2886 | return 0; |
2887 | ||
1aad7ac0 | 2888 | intel_dp->has_audio = has_audio; |
f684960e CW |
2889 | goto done; |
2890 | } | |
2891 | ||
e953fd7b | 2892 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
2893 | bool old_auto = intel_dp->color_range_auto; |
2894 | uint32_t old_range = intel_dp->color_range; | |
2895 | ||
55bc60db VS |
2896 | switch (val) { |
2897 | case INTEL_BROADCAST_RGB_AUTO: | |
2898 | intel_dp->color_range_auto = true; | |
2899 | break; | |
2900 | case INTEL_BROADCAST_RGB_FULL: | |
2901 | intel_dp->color_range_auto = false; | |
2902 | intel_dp->color_range = 0; | |
2903 | break; | |
2904 | case INTEL_BROADCAST_RGB_LIMITED: | |
2905 | intel_dp->color_range_auto = false; | |
2906 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
2907 | break; | |
2908 | default: | |
2909 | return -EINVAL; | |
2910 | } | |
ae4edb80 DV |
2911 | |
2912 | if (old_auto == intel_dp->color_range_auto && | |
2913 | old_range == intel_dp->color_range) | |
2914 | return 0; | |
2915 | ||
e953fd7b CW |
2916 | goto done; |
2917 | } | |
2918 | ||
53b41837 YN |
2919 | if (is_edp(intel_dp) && |
2920 | property == connector->dev->mode_config.scaling_mode_property) { | |
2921 | if (val == DRM_MODE_SCALE_NONE) { | |
2922 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
2923 | return -EINVAL; | |
2924 | } | |
2925 | ||
2926 | if (intel_connector->panel.fitting_mode == val) { | |
2927 | /* the eDP scaling property is not changed */ | |
2928 | return 0; | |
2929 | } | |
2930 | intel_connector->panel.fitting_mode = val; | |
2931 | ||
2932 | goto done; | |
2933 | } | |
2934 | ||
f684960e CW |
2935 | return -EINVAL; |
2936 | ||
2937 | done: | |
c0c36b94 CW |
2938 | if (intel_encoder->base.crtc) |
2939 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
2940 | |
2941 | return 0; | |
2942 | } | |
2943 | ||
a4fc5ed6 | 2944 | static void |
73845adf | 2945 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 2946 | { |
1d508706 | 2947 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 2948 | |
9cd300e0 JN |
2949 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
2950 | kfree(intel_connector->edid); | |
2951 | ||
acd8db10 PZ |
2952 | /* Can't call is_edp() since the encoder may have been destroyed |
2953 | * already. */ | |
2954 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 2955 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 2956 | |
a4fc5ed6 KP |
2957 | drm_sysfs_connector_remove(connector); |
2958 | drm_connector_cleanup(connector); | |
55f78c43 | 2959 | kfree(connector); |
a4fc5ed6 KP |
2960 | } |
2961 | ||
00c09d70 | 2962 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 2963 | { |
da63a9f2 PZ |
2964 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
2965 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
bd173813 | 2966 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
24d05927 DV |
2967 | |
2968 | i2c_del_adapter(&intel_dp->adapter); | |
2969 | drm_encoder_cleanup(encoder); | |
bd943159 KP |
2970 | if (is_edp(intel_dp)) { |
2971 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
bd173813 | 2972 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 2973 | ironlake_panel_vdd_off_sync(intel_dp); |
bd173813 | 2974 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 | 2975 | } |
da63a9f2 | 2976 | kfree(intel_dig_port); |
24d05927 DV |
2977 | } |
2978 | ||
a4fc5ed6 | 2979 | static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = { |
a4fc5ed6 | 2980 | .mode_set = intel_dp_mode_set, |
a4fc5ed6 KP |
2981 | }; |
2982 | ||
2983 | static const struct drm_connector_funcs intel_dp_connector_funcs = { | |
2bd2ad64 | 2984 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
2985 | .detect = intel_dp_detect, |
2986 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 2987 | .set_property = intel_dp_set_property, |
73845adf | 2988 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
2989 | }; |
2990 | ||
2991 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
2992 | .get_modes = intel_dp_get_modes, | |
2993 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 2994 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
2995 | }; |
2996 | ||
a4fc5ed6 | 2997 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
24d05927 | 2998 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
2999 | }; |
3000 | ||
995b6762 | 3001 | static void |
21d40d37 | 3002 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 3003 | { |
fa90ecef | 3004 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
c8110e52 | 3005 | |
885a5014 | 3006 | intel_dp_check_link_status(intel_dp); |
c8110e52 | 3007 | } |
6207937d | 3008 | |
e3421a18 ZW |
3009 | /* Return which DP Port should be selected for Transcoder DP control */ |
3010 | int | |
0206e353 | 3011 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
3012 | { |
3013 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
3014 | struct intel_encoder *intel_encoder; |
3015 | struct intel_dp *intel_dp; | |
e3421a18 | 3016 | |
fa90ecef PZ |
3017 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
3018 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 3019 | |
fa90ecef PZ |
3020 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
3021 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 3022 | return intel_dp->output_reg; |
e3421a18 | 3023 | } |
ea5b213a | 3024 | |
e3421a18 ZW |
3025 | return -1; |
3026 | } | |
3027 | ||
36e83a18 | 3028 | /* check the VBT to see whether the eDP is on DP-D port */ |
cb0953d7 | 3029 | bool intel_dpd_is_edp(struct drm_device *dev) |
36e83a18 ZY |
3030 | { |
3031 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3032 | struct child_device_config *p_child; | |
3033 | int i; | |
3034 | ||
41aa3448 | 3035 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
3036 | return false; |
3037 | ||
41aa3448 RV |
3038 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
3039 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 ZY |
3040 | |
3041 | if (p_child->dvo_port == PORT_IDPD && | |
3042 | p_child->device_type == DEVICE_TYPE_eDP) | |
3043 | return true; | |
3044 | } | |
3045 | return false; | |
3046 | } | |
3047 | ||
f684960e CW |
3048 | static void |
3049 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) | |
3050 | { | |
53b41837 YN |
3051 | struct intel_connector *intel_connector = to_intel_connector(connector); |
3052 | ||
3f43c48d | 3053 | intel_attach_force_audio_property(connector); |
e953fd7b | 3054 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 3055 | intel_dp->color_range_auto = true; |
53b41837 YN |
3056 | |
3057 | if (is_edp(intel_dp)) { | |
3058 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
3059 | drm_object_attach_property( |
3060 | &connector->base, | |
53b41837 | 3061 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
3062 | DRM_MODE_SCALE_ASPECT); |
3063 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 3064 | } |
f684960e CW |
3065 | } |
3066 | ||
67a54566 DV |
3067 | static void |
3068 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
3069 | struct intel_dp *intel_dp, |
3070 | struct edp_power_seq *out) | |
67a54566 DV |
3071 | { |
3072 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3073 | struct edp_power_seq cur, vbt, spec, final; | |
3074 | u32 pp_on, pp_off, pp_div, pp; | |
453c5420 JB |
3075 | int pp_control_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
3076 | ||
3077 | if (HAS_PCH_SPLIT(dev)) { | |
3078 | pp_control_reg = PCH_PP_CONTROL; | |
3079 | pp_on_reg = PCH_PP_ON_DELAYS; | |
3080 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
3081 | pp_div_reg = PCH_PP_DIVISOR; | |
3082 | } else { | |
3083 | pp_control_reg = PIPEA_PP_CONTROL; | |
3084 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
3085 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
3086 | pp_div_reg = PIPEA_PP_DIVISOR; | |
3087 | } | |
67a54566 DV |
3088 | |
3089 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
3090 | * the very first thing. */ | |
453c5420 JB |
3091 | pp = ironlake_get_pp_control(intel_dp); |
3092 | I915_WRITE(pp_control_reg, pp); | |
67a54566 | 3093 | |
453c5420 JB |
3094 | pp_on = I915_READ(pp_on_reg); |
3095 | pp_off = I915_READ(pp_off_reg); | |
3096 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
3097 | |
3098 | /* Pull timing values out of registers */ | |
3099 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
3100 | PANEL_POWER_UP_DELAY_SHIFT; | |
3101 | ||
3102 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
3103 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
3104 | ||
3105 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
3106 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
3107 | ||
3108 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
3109 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
3110 | ||
3111 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
3112 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
3113 | ||
3114 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3115 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
3116 | ||
41aa3448 | 3117 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
3118 | |
3119 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
3120 | * our hw here, which are all in 100usec. */ | |
3121 | spec.t1_t3 = 210 * 10; | |
3122 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
3123 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
3124 | spec.t10 = 500 * 10; | |
3125 | /* This one is special and actually in units of 100ms, but zero | |
3126 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
3127 | * table multiplies it with 1000 to make it in units of 100usec, | |
3128 | * too. */ | |
3129 | spec.t11_t12 = (510 + 100) * 10; | |
3130 | ||
3131 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3132 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
3133 | ||
3134 | /* Use the max of the register settings and vbt. If both are | |
3135 | * unset, fall back to the spec limits. */ | |
3136 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
3137 | spec.field : \ | |
3138 | max(cur.field, vbt.field)) | |
3139 | assign_final(t1_t3); | |
3140 | assign_final(t8); | |
3141 | assign_final(t9); | |
3142 | assign_final(t10); | |
3143 | assign_final(t11_t12); | |
3144 | #undef assign_final | |
3145 | ||
3146 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
3147 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
3148 | intel_dp->backlight_on_delay = get_delay(t8); | |
3149 | intel_dp->backlight_off_delay = get_delay(t9); | |
3150 | intel_dp->panel_power_down_delay = get_delay(t10); | |
3151 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
3152 | #undef get_delay | |
3153 | ||
f30d26e4 JN |
3154 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
3155 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
3156 | intel_dp->panel_power_cycle_delay); | |
3157 | ||
3158 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
3159 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
3160 | ||
3161 | if (out) | |
3162 | *out = final; | |
3163 | } | |
3164 | ||
3165 | static void | |
3166 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
3167 | struct intel_dp *intel_dp, | |
3168 | struct edp_power_seq *seq) | |
3169 | { | |
3170 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
3171 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
3172 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
3173 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
3174 | ||
3175 | if (HAS_PCH_SPLIT(dev)) { | |
3176 | pp_on_reg = PCH_PP_ON_DELAYS; | |
3177 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
3178 | pp_div_reg = PCH_PP_DIVISOR; | |
3179 | } else { | |
3180 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
3181 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
3182 | pp_div_reg = PIPEA_PP_DIVISOR; | |
3183 | } | |
3184 | ||
67a54566 | 3185 | /* And finally store the new values in the power sequencer. */ |
f30d26e4 JN |
3186 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
3187 | (seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT); | |
3188 | pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
3189 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); | |
67a54566 DV |
3190 | /* Compute the divisor for the pp clock, simply match the Bspec |
3191 | * formula. */ | |
453c5420 | 3192 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 3193 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
3194 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
3195 | ||
3196 | /* Haswell doesn't have any port selection bits for the panel | |
3197 | * power sequencer any more. */ | |
bc7d38a4 ID |
3198 | if (IS_VALLEYVIEW(dev)) { |
3199 | port_sel = I915_READ(pp_on_reg) & 0xc0000000; | |
3200 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { | |
3201 | if (dp_to_dig_port(intel_dp)->port == PORT_A) | |
453c5420 | 3202 | port_sel = PANEL_POWER_PORT_DP_A; |
67a54566 | 3203 | else |
453c5420 | 3204 | port_sel = PANEL_POWER_PORT_DP_D; |
67a54566 DV |
3205 | } |
3206 | ||
453c5420 JB |
3207 | pp_on |= port_sel; |
3208 | ||
3209 | I915_WRITE(pp_on_reg, pp_on); | |
3210 | I915_WRITE(pp_off_reg, pp_off); | |
3211 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 3212 | |
67a54566 | 3213 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
3214 | I915_READ(pp_on_reg), |
3215 | I915_READ(pp_off_reg), | |
3216 | I915_READ(pp_div_reg)); | |
f684960e CW |
3217 | } |
3218 | ||
ed92f0b2 PZ |
3219 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
3220 | struct intel_connector *intel_connector) | |
3221 | { | |
3222 | struct drm_connector *connector = &intel_connector->base; | |
3223 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3224 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3225 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3226 | struct drm_display_mode *fixed_mode = NULL; | |
3227 | struct edp_power_seq power_seq = { 0 }; | |
3228 | bool has_dpcd; | |
3229 | struct drm_display_mode *scan; | |
3230 | struct edid *edid; | |
3231 | ||
3232 | if (!is_edp(intel_dp)) | |
3233 | return true; | |
3234 | ||
3235 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
3236 | ||
3237 | /* Cache DPCD and EDID for edp. */ | |
3238 | ironlake_edp_panel_vdd_on(intel_dp); | |
3239 | has_dpcd = intel_dp_get_dpcd(intel_dp); | |
3240 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
3241 | ||
3242 | if (has_dpcd) { | |
3243 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
3244 | dev_priv->no_aux_handshake = | |
3245 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
3246 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
3247 | } else { | |
3248 | /* if this fails, presume the device is a ghost */ | |
3249 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
3250 | return false; |
3251 | } | |
3252 | ||
3253 | /* We now know it's not a ghost, init power sequence regs. */ | |
3254 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
3255 | &power_seq); | |
3256 | ||
3257 | ironlake_edp_panel_vdd_on(intel_dp); | |
3258 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
3259 | if (edid) { | |
3260 | if (drm_add_edid_modes(connector, edid)) { | |
3261 | drm_mode_connector_update_edid_property(connector, | |
3262 | edid); | |
3263 | drm_edid_to_eld(connector, edid); | |
3264 | } else { | |
3265 | kfree(edid); | |
3266 | edid = ERR_PTR(-EINVAL); | |
3267 | } | |
3268 | } else { | |
3269 | edid = ERR_PTR(-ENOENT); | |
3270 | } | |
3271 | intel_connector->edid = edid; | |
3272 | ||
3273 | /* prefer fixed mode from EDID if available */ | |
3274 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
3275 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
3276 | fixed_mode = drm_mode_duplicate(dev, scan); | |
3277 | break; | |
3278 | } | |
3279 | } | |
3280 | ||
3281 | /* fallback to VBT if available for eDP */ | |
3282 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
3283 | fixed_mode = drm_mode_duplicate(dev, | |
3284 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
3285 | if (fixed_mode) | |
3286 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
3287 | } | |
3288 | ||
3289 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
3290 | ||
3291 | intel_panel_init(&intel_connector->panel, fixed_mode); | |
3292 | intel_panel_setup_backlight(connector); | |
3293 | ||
3294 | return true; | |
3295 | } | |
3296 | ||
16c25533 | 3297 | bool |
f0fec3f2 PZ |
3298 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
3299 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 3300 | { |
f0fec3f2 PZ |
3301 | struct drm_connector *connector = &intel_connector->base; |
3302 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
3303 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
3304 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 3305 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 3306 | enum port port = intel_dig_port->port; |
5eb08b69 | 3307 | const char *name = NULL; |
b2a14755 | 3308 | int type, error; |
a4fc5ed6 | 3309 | |
0767935e DV |
3310 | /* Preserve the current hw state. */ |
3311 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 3312 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 3313 | |
f7d24902 | 3314 | type = DRM_MODE_CONNECTOR_DisplayPort; |
19c03924 GB |
3315 | /* |
3316 | * FIXME : We need to initialize built-in panels before external panels. | |
3317 | * For X0, DP_C is fixed as eDP. Revisit this as part of VLV eDP cleanup | |
3318 | */ | |
f7d24902 ID |
3319 | switch (port) { |
3320 | case PORT_A: | |
b329530c | 3321 | type = DRM_MODE_CONNECTOR_eDP; |
f7d24902 ID |
3322 | break; |
3323 | case PORT_C: | |
3324 | if (IS_VALLEYVIEW(dev)) | |
3325 | type = DRM_MODE_CONNECTOR_eDP; | |
3326 | break; | |
3327 | case PORT_D: | |
3328 | if (HAS_PCH_SPLIT(dev) && intel_dpd_is_edp(dev)) | |
3329 | type = DRM_MODE_CONNECTOR_eDP; | |
3330 | break; | |
3331 | default: /* silence GCC warning */ | |
3332 | break; | |
b329530c AJ |
3333 | } |
3334 | ||
f7d24902 ID |
3335 | /* |
3336 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
3337 | * for DP the encoder type can be set by the caller to | |
3338 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
3339 | */ | |
3340 | if (type == DRM_MODE_CONNECTOR_eDP) | |
3341 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
3342 | ||
e7281eab ID |
3343 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
3344 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
3345 | port_name(port)); | |
3346 | ||
b329530c | 3347 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
3348 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
3349 | ||
a4fc5ed6 KP |
3350 | connector->interlace_allowed = true; |
3351 | connector->doublescan_allowed = 0; | |
3352 | ||
f0fec3f2 PZ |
3353 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
3354 | ironlake_panel_vdd_work); | |
a4fc5ed6 | 3355 | |
df0e9248 | 3356 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 KP |
3357 | drm_sysfs_connector_add(connector); |
3358 | ||
affa9354 | 3359 | if (HAS_DDI(dev)) |
bcbc889b PZ |
3360 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
3361 | else | |
3362 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
3363 | ||
9ed35ab1 PZ |
3364 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
3365 | if (HAS_DDI(dev)) { | |
3366 | switch (intel_dig_port->port) { | |
3367 | case PORT_A: | |
3368 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
3369 | break; | |
3370 | case PORT_B: | |
3371 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
3372 | break; | |
3373 | case PORT_C: | |
3374 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
3375 | break; | |
3376 | case PORT_D: | |
3377 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
3378 | break; | |
3379 | default: | |
3380 | BUG(); | |
3381 | } | |
3382 | } | |
e8cb4558 | 3383 | |
a4fc5ed6 | 3384 | /* Set up the DDC bus. */ |
ab9d7c30 PZ |
3385 | switch (port) { |
3386 | case PORT_A: | |
1d843f9d | 3387 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
3388 | name = "DPDDC-A"; |
3389 | break; | |
3390 | case PORT_B: | |
1d843f9d | 3391 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
3392 | name = "DPDDC-B"; |
3393 | break; | |
3394 | case PORT_C: | |
1d843f9d | 3395 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
3396 | name = "DPDDC-C"; |
3397 | break; | |
3398 | case PORT_D: | |
1d843f9d | 3399 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
3400 | name = "DPDDC-D"; |
3401 | break; | |
3402 | default: | |
ad1c0b19 | 3403 | BUG(); |
5eb08b69 ZW |
3404 | } |
3405 | ||
b2a14755 PZ |
3406 | error = intel_dp_i2c_init(intel_dp, intel_connector, name); |
3407 | WARN(error, "intel_dp_i2c_init failed with error %d for port %c\n", | |
3408 | error, port_name(port)); | |
c1f05264 | 3409 | |
2b28bb1b RV |
3410 | intel_dp->psr_setup_done = false; |
3411 | ||
b2f246a8 | 3412 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
15b1d171 PZ |
3413 | i2c_del_adapter(&intel_dp->adapter); |
3414 | if (is_edp(intel_dp)) { | |
3415 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
3416 | mutex_lock(&dev->mode_config.mutex); | |
3417 | ironlake_panel_vdd_off_sync(intel_dp); | |
3418 | mutex_unlock(&dev->mode_config.mutex); | |
3419 | } | |
b2f246a8 PZ |
3420 | drm_sysfs_connector_remove(connector); |
3421 | drm_connector_cleanup(connector); | |
16c25533 | 3422 | return false; |
b2f246a8 | 3423 | } |
32f9d658 | 3424 | |
f684960e CW |
3425 | intel_dp_add_properties(intel_dp, connector); |
3426 | ||
a4fc5ed6 KP |
3427 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
3428 | * 0xd. Failure to do so will result in spurious interrupts being | |
3429 | * generated on the port when a cable is not attached. | |
3430 | */ | |
3431 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
3432 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
3433 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
3434 | } | |
16c25533 PZ |
3435 | |
3436 | return true; | |
a4fc5ed6 | 3437 | } |
f0fec3f2 PZ |
3438 | |
3439 | void | |
3440 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
3441 | { | |
3442 | struct intel_digital_port *intel_dig_port; | |
3443 | struct intel_encoder *intel_encoder; | |
3444 | struct drm_encoder *encoder; | |
3445 | struct intel_connector *intel_connector; | |
3446 | ||
3447 | intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL); | |
3448 | if (!intel_dig_port) | |
3449 | return; | |
3450 | ||
3451 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); | |
3452 | if (!intel_connector) { | |
3453 | kfree(intel_dig_port); | |
3454 | return; | |
3455 | } | |
3456 | ||
3457 | intel_encoder = &intel_dig_port->base; | |
3458 | encoder = &intel_encoder->base; | |
3459 | ||
3460 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
3461 | DRM_MODE_ENCODER_TMDS); | |
00c09d70 | 3462 | drm_encoder_helper_add(&intel_encoder->base, &intel_dp_helper_funcs); |
f0fec3f2 | 3463 | |
5bfe2ac0 | 3464 | intel_encoder->compute_config = intel_dp_compute_config; |
00c09d70 PZ |
3465 | intel_encoder->enable = intel_enable_dp; |
3466 | intel_encoder->pre_enable = intel_pre_enable_dp; | |
3467 | intel_encoder->disable = intel_disable_dp; | |
3468 | intel_encoder->post_disable = intel_post_disable_dp; | |
3469 | intel_encoder->get_hw_state = intel_dp_get_hw_state; | |
045ac3b5 | 3470 | intel_encoder->get_config = intel_dp_get_config; |
89b667f8 JB |
3471 | if (IS_VALLEYVIEW(dev)) |
3472 | intel_encoder->pre_pll_enable = intel_dp_pre_pll_enable; | |
f0fec3f2 | 3473 | |
174edf1f | 3474 | intel_dig_port->port = port; |
f0fec3f2 PZ |
3475 | intel_dig_port->dp.output_reg = output_reg; |
3476 | ||
00c09d70 | 3477 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
f0fec3f2 PZ |
3478 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
3479 | intel_encoder->cloneable = false; | |
3480 | intel_encoder->hot_plug = intel_dp_hot_plug; | |
3481 | ||
15b1d171 PZ |
3482 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
3483 | drm_encoder_cleanup(encoder); | |
3484 | kfree(intel_dig_port); | |
b2f246a8 | 3485 | kfree(intel_connector); |
15b1d171 | 3486 | } |
f0fec3f2 | 3487 | } |