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45244b87 ED |
1 | /* |
2 | * Copyright © 2012 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eugeni Dodonov <eugeni.dodonov@intel.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "i915_drv.h" | |
29 | #include "intel_drv.h" | |
30 | ||
10122051 JN |
31 | struct ddi_buf_trans { |
32 | u32 trans1; /* balance leg enable, de-emph level */ | |
33 | u32 trans2; /* vref sel, vswing */ | |
34 | }; | |
35 | ||
45244b87 ED |
36 | /* HDMI/DVI modes ignore everything but the last 2 items. So we share |
37 | * them for both DP and FDI transports, allowing those ports to | |
38 | * automatically adapt to HDMI connections as well | |
39 | */ | |
10122051 JN |
40 | static const struct ddi_buf_trans hsw_ddi_translations_dp[] = { |
41 | { 0x00FFFFFF, 0x0006000E }, | |
42 | { 0x00D75FFF, 0x0005000A }, | |
43 | { 0x00C30FFF, 0x00040006 }, | |
44 | { 0x80AAAFFF, 0x000B0000 }, | |
45 | { 0x00FFFFFF, 0x0005000A }, | |
46 | { 0x00D75FFF, 0x000C0004 }, | |
47 | { 0x80C30FFF, 0x000B0000 }, | |
48 | { 0x00FFFFFF, 0x00040006 }, | |
49 | { 0x80D75FFF, 0x000B0000 }, | |
45244b87 ED |
50 | }; |
51 | ||
10122051 JN |
52 | static const struct ddi_buf_trans hsw_ddi_translations_fdi[] = { |
53 | { 0x00FFFFFF, 0x0007000E }, | |
54 | { 0x00D75FFF, 0x000F000A }, | |
55 | { 0x00C30FFF, 0x00060006 }, | |
56 | { 0x00AAAFFF, 0x001E0000 }, | |
57 | { 0x00FFFFFF, 0x000F000A }, | |
58 | { 0x00D75FFF, 0x00160004 }, | |
59 | { 0x00C30FFF, 0x001E0000 }, | |
60 | { 0x00FFFFFF, 0x00060006 }, | |
61 | { 0x00D75FFF, 0x001E0000 }, | |
6acab15a PZ |
62 | }; |
63 | ||
10122051 JN |
64 | static const struct ddi_buf_trans hsw_ddi_translations_hdmi[] = { |
65 | /* Idx NT mV d T mV d db */ | |
66 | { 0x00FFFFFF, 0x0006000E }, /* 0: 400 400 0 */ | |
67 | { 0x00E79FFF, 0x000E000C }, /* 1: 400 500 2 */ | |
68 | { 0x00D75FFF, 0x0005000A }, /* 2: 400 600 3.5 */ | |
69 | { 0x00FFFFFF, 0x0005000A }, /* 3: 600 600 0 */ | |
70 | { 0x00E79FFF, 0x001D0007 }, /* 4: 600 750 2 */ | |
71 | { 0x00D75FFF, 0x000C0004 }, /* 5: 600 900 3.5 */ | |
72 | { 0x00FFFFFF, 0x00040006 }, /* 6: 800 800 0 */ | |
73 | { 0x80E79FFF, 0x00030002 }, /* 7: 800 1000 2 */ | |
74 | { 0x00FFFFFF, 0x00140005 }, /* 8: 850 850 0 */ | |
75 | { 0x00FFFFFF, 0x000C0004 }, /* 9: 900 900 0 */ | |
76 | { 0x00FFFFFF, 0x001C0003 }, /* 10: 950 950 0 */ | |
77 | { 0x80FFFFFF, 0x00030002 }, /* 11: 1000 1000 0 */ | |
45244b87 ED |
78 | }; |
79 | ||
10122051 JN |
80 | static const struct ddi_buf_trans bdw_ddi_translations_edp[] = { |
81 | { 0x00FFFFFF, 0x00000012 }, | |
82 | { 0x00EBAFFF, 0x00020011 }, | |
83 | { 0x00C71FFF, 0x0006000F }, | |
84 | { 0x00AAAFFF, 0x000E000A }, | |
85 | { 0x00FFFFFF, 0x00020011 }, | |
86 | { 0x00DB6FFF, 0x0005000F }, | |
87 | { 0x00BEEFFF, 0x000A000C }, | |
88 | { 0x00FFFFFF, 0x0005000F }, | |
89 | { 0x00DB6FFF, 0x000A000C }, | |
300644c7 PZ |
90 | }; |
91 | ||
10122051 JN |
92 | static const struct ddi_buf_trans bdw_ddi_translations_dp[] = { |
93 | { 0x00FFFFFF, 0x0007000E }, | |
94 | { 0x00D75FFF, 0x000E000A }, | |
95 | { 0x00BEFFFF, 0x00140006 }, | |
96 | { 0x80B2CFFF, 0x001B0002 }, | |
97 | { 0x00FFFFFF, 0x000E000A }, | |
17b523ba | 98 | { 0x00DB6FFF, 0x00160005 }, |
6805b2a7 | 99 | { 0x80C71FFF, 0x001A0002 }, |
10122051 JN |
100 | { 0x00F7DFFF, 0x00180004 }, |
101 | { 0x80D75FFF, 0x001B0002 }, | |
e58623cb AR |
102 | }; |
103 | ||
10122051 JN |
104 | static const struct ddi_buf_trans bdw_ddi_translations_fdi[] = { |
105 | { 0x00FFFFFF, 0x0001000E }, | |
106 | { 0x00D75FFF, 0x0004000A }, | |
107 | { 0x00C30FFF, 0x00070006 }, | |
108 | { 0x00AAAFFF, 0x000C0000 }, | |
109 | { 0x00FFFFFF, 0x0004000A }, | |
110 | { 0x00D75FFF, 0x00090004 }, | |
111 | { 0x00C30FFF, 0x000C0000 }, | |
112 | { 0x00FFFFFF, 0x00070006 }, | |
113 | { 0x00D75FFF, 0x000C0000 }, | |
e58623cb AR |
114 | }; |
115 | ||
10122051 JN |
116 | static const struct ddi_buf_trans bdw_ddi_translations_hdmi[] = { |
117 | /* Idx NT mV d T mV df db */ | |
118 | { 0x00FFFFFF, 0x0007000E }, /* 0: 400 400 0 */ | |
119 | { 0x00D75FFF, 0x000E000A }, /* 1: 400 600 3.5 */ | |
120 | { 0x00BEFFFF, 0x00140006 }, /* 2: 400 800 6 */ | |
121 | { 0x00FFFFFF, 0x0009000D }, /* 3: 450 450 0 */ | |
122 | { 0x00FFFFFF, 0x000E000A }, /* 4: 600 600 0 */ | |
123 | { 0x00D7FFFF, 0x00140006 }, /* 5: 600 800 2.5 */ | |
124 | { 0x80CB2FFF, 0x001B0002 }, /* 6: 600 1000 4.5 */ | |
125 | { 0x00FFFFFF, 0x00140006 }, /* 7: 800 800 0 */ | |
126 | { 0x80E79FFF, 0x001B0002 }, /* 8: 800 1000 2 */ | |
127 | { 0x80FFFFFF, 0x001B0002 }, /* 9: 1000 1000 0 */ | |
a26aa8ba DL |
128 | }; |
129 | ||
7f88e3af DL |
130 | static const struct ddi_buf_trans skl_ddi_translations_dp[] = { |
131 | { 0x00000018, 0x000000a0 }, | |
132 | { 0x00004014, 0x00000098 }, | |
133 | { 0x00006012, 0x00000088 }, | |
134 | { 0x00008010, 0x00000080 }, | |
135 | { 0x00000018, 0x00000098 }, | |
136 | { 0x00004014, 0x00000088 }, | |
137 | { 0x00006012, 0x00000080 }, | |
138 | { 0x00000018, 0x00000088 }, | |
139 | { 0x00004014, 0x00000080 }, | |
140 | }; | |
141 | ||
142 | static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = { | |
143 | /* Idx NT mV T mV db */ | |
144 | { 0x00000018, 0x000000a0 }, /* 0: 400 400 0 */ | |
145 | { 0x00004014, 0x00000098 }, /* 1: 400 600 3.5 */ | |
146 | { 0x00006012, 0x00000088 }, /* 2: 400 800 6 */ | |
147 | { 0x00000018, 0x0000003c }, /* 3: 450 450 0 */ | |
148 | { 0x00000018, 0x00000098 }, /* 4: 600 600 0 */ | |
149 | { 0x00003015, 0x00000088 }, /* 5: 600 800 2.5 */ | |
150 | { 0x00005013, 0x00000080 }, /* 6: 600 1000 4.5 */ | |
151 | { 0x00000018, 0x00000088 }, /* 7: 800 800 0 */ | |
152 | { 0x00000096, 0x00000080 }, /* 8: 800 1000 2 */ | |
153 | { 0x00000018, 0x00000080 }, /* 9: 1200 1200 0 */ | |
154 | }; | |
155 | ||
20f4dbe4 | 156 | enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder) |
fc914639 | 157 | { |
0bdee30e | 158 | struct drm_encoder *encoder = &intel_encoder->base; |
fc914639 PZ |
159 | int type = intel_encoder->type; |
160 | ||
0e32b39c DA |
161 | if (type == INTEL_OUTPUT_DP_MST) { |
162 | struct intel_digital_port *intel_dig_port = enc_to_mst(encoder)->primary; | |
163 | return intel_dig_port->port; | |
164 | } else if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP || | |
00c09d70 | 165 | type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_UNKNOWN) { |
174edf1f PZ |
166 | struct intel_digital_port *intel_dig_port = |
167 | enc_to_dig_port(encoder); | |
168 | return intel_dig_port->port; | |
0bdee30e | 169 | |
fc914639 PZ |
170 | } else if (type == INTEL_OUTPUT_ANALOG) { |
171 | return PORT_E; | |
0bdee30e | 172 | |
fc914639 PZ |
173 | } else { |
174 | DRM_ERROR("Invalid DDI encoder type %d\n", type); | |
175 | BUG(); | |
176 | } | |
177 | } | |
178 | ||
e58623cb AR |
179 | /* |
180 | * Starting with Haswell, DDI port buffers must be programmed with correct | |
181 | * values in advance. The buffer values are different for FDI and DP modes, | |
45244b87 ED |
182 | * but the HDMI/DVI fields are shared among those. So we program the DDI |
183 | * in either FDI or DP modes only, as HDMI connections will work with both | |
184 | * of those | |
185 | */ | |
ad8d270c | 186 | static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port) |
45244b87 ED |
187 | { |
188 | struct drm_i915_private *dev_priv = dev->dev_private; | |
189 | u32 reg; | |
ce4dd49e | 190 | int i, n_hdmi_entries, hdmi_800mV_0dB; |
6acab15a | 191 | int hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift; |
10122051 JN |
192 | const struct ddi_buf_trans *ddi_translations_fdi; |
193 | const struct ddi_buf_trans *ddi_translations_dp; | |
194 | const struct ddi_buf_trans *ddi_translations_edp; | |
195 | const struct ddi_buf_trans *ddi_translations_hdmi; | |
196 | const struct ddi_buf_trans *ddi_translations; | |
e58623cb | 197 | |
7f88e3af DL |
198 | if (IS_SKYLAKE(dev)) { |
199 | ddi_translations_fdi = NULL; | |
200 | ddi_translations_dp = skl_ddi_translations_dp; | |
201 | ddi_translations_edp = skl_ddi_translations_dp; | |
202 | ddi_translations_hdmi = skl_ddi_translations_hdmi; | |
203 | n_hdmi_entries = ARRAY_SIZE(skl_ddi_translations_hdmi); | |
204 | hdmi_800mV_0dB = 7; | |
205 | } else if (IS_BROADWELL(dev)) { | |
e58623cb AR |
206 | ddi_translations_fdi = bdw_ddi_translations_fdi; |
207 | ddi_translations_dp = bdw_ddi_translations_dp; | |
300644c7 | 208 | ddi_translations_edp = bdw_ddi_translations_edp; |
a26aa8ba | 209 | ddi_translations_hdmi = bdw_ddi_translations_hdmi; |
10122051 | 210 | n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); |
a26aa8ba | 211 | hdmi_800mV_0dB = 7; |
e58623cb AR |
212 | } else if (IS_HASWELL(dev)) { |
213 | ddi_translations_fdi = hsw_ddi_translations_fdi; | |
214 | ddi_translations_dp = hsw_ddi_translations_dp; | |
300644c7 | 215 | ddi_translations_edp = hsw_ddi_translations_dp; |
a26aa8ba | 216 | ddi_translations_hdmi = hsw_ddi_translations_hdmi; |
10122051 | 217 | n_hdmi_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi); |
ce4dd49e | 218 | hdmi_800mV_0dB = 6; |
e58623cb AR |
219 | } else { |
220 | WARN(1, "ddi translation table missing\n"); | |
300644c7 | 221 | ddi_translations_edp = bdw_ddi_translations_dp; |
e58623cb AR |
222 | ddi_translations_fdi = bdw_ddi_translations_fdi; |
223 | ddi_translations_dp = bdw_ddi_translations_dp; | |
a26aa8ba | 224 | ddi_translations_hdmi = bdw_ddi_translations_hdmi; |
10122051 | 225 | n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); |
a26aa8ba | 226 | hdmi_800mV_0dB = 7; |
e58623cb AR |
227 | } |
228 | ||
300644c7 PZ |
229 | switch (port) { |
230 | case PORT_A: | |
231 | ddi_translations = ddi_translations_edp; | |
232 | break; | |
233 | case PORT_B: | |
234 | case PORT_C: | |
300644c7 PZ |
235 | ddi_translations = ddi_translations_dp; |
236 | break; | |
77d8d009 | 237 | case PORT_D: |
5d8a7752 | 238 | if (intel_dp_is_edp(dev, PORT_D)) |
77d8d009 PZ |
239 | ddi_translations = ddi_translations_edp; |
240 | else | |
241 | ddi_translations = ddi_translations_dp; | |
242 | break; | |
300644c7 | 243 | case PORT_E: |
7f88e3af DL |
244 | if (ddi_translations_fdi) |
245 | ddi_translations = ddi_translations_fdi; | |
246 | else | |
247 | ddi_translations = ddi_translations_dp; | |
300644c7 PZ |
248 | break; |
249 | default: | |
250 | BUG(); | |
251 | } | |
45244b87 | 252 | |
f72d19f0 PZ |
253 | for (i = 0, reg = DDI_BUF_TRANS(port); |
254 | i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) { | |
10122051 JN |
255 | I915_WRITE(reg, ddi_translations[i].trans1); |
256 | reg += 4; | |
257 | I915_WRITE(reg, ddi_translations[i].trans2); | |
45244b87 ED |
258 | reg += 4; |
259 | } | |
ce4dd49e DL |
260 | |
261 | /* Choose a good default if VBT is badly populated */ | |
262 | if (hdmi_level == HDMI_LEVEL_SHIFT_UNKNOWN || | |
263 | hdmi_level >= n_hdmi_entries) | |
264 | hdmi_level = hdmi_800mV_0dB; | |
265 | ||
6acab15a | 266 | /* Entry 9 is for HDMI: */ |
10122051 JN |
267 | I915_WRITE(reg, ddi_translations_hdmi[hdmi_level].trans1); |
268 | reg += 4; | |
269 | I915_WRITE(reg, ddi_translations_hdmi[hdmi_level].trans2); | |
270 | reg += 4; | |
45244b87 ED |
271 | } |
272 | ||
273 | /* Program DDI buffers translations for DP. By default, program ports A-D in DP | |
274 | * mode and port E for FDI. | |
275 | */ | |
276 | void intel_prepare_ddi(struct drm_device *dev) | |
277 | { | |
278 | int port; | |
279 | ||
0d536cb4 PZ |
280 | if (!HAS_DDI(dev)) |
281 | return; | |
45244b87 | 282 | |
ad8d270c PZ |
283 | for (port = PORT_A; port <= PORT_E; port++) |
284 | intel_prepare_ddi_buffers(dev, port); | |
45244b87 | 285 | } |
c82e4d26 | 286 | |
248138b5 PZ |
287 | static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv, |
288 | enum port port) | |
289 | { | |
290 | uint32_t reg = DDI_BUF_CTL(port); | |
291 | int i; | |
292 | ||
293 | for (i = 0; i < 8; i++) { | |
294 | udelay(1); | |
295 | if (I915_READ(reg) & DDI_BUF_IS_IDLE) | |
296 | return; | |
297 | } | |
298 | DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port)); | |
299 | } | |
c82e4d26 ED |
300 | |
301 | /* Starting with Haswell, different DDI ports can work in FDI mode for | |
302 | * connection to the PCH-located connectors. For this, it is necessary to train | |
303 | * both the DDI port and PCH receiver for the desired DDI buffer settings. | |
304 | * | |
305 | * The recommended port to work in FDI mode is DDI E, which we use here. Also, | |
306 | * please note that when FDI mode is active on DDI E, it shares 2 lines with | |
307 | * DDI A (which is used for eDP) | |
308 | */ | |
309 | ||
310 | void hsw_fdi_link_train(struct drm_crtc *crtc) | |
311 | { | |
312 | struct drm_device *dev = crtc->dev; | |
313 | struct drm_i915_private *dev_priv = dev->dev_private; | |
314 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
04945641 | 315 | u32 temp, i, rx_ctl_val; |
c82e4d26 | 316 | |
04945641 PZ |
317 | /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the |
318 | * mode set "sequence for CRT port" document: | |
319 | * - TP1 to TP2 time with the default value | |
320 | * - FDI delay to 90h | |
8693a824 DL |
321 | * |
322 | * WaFDIAutoLinkSetTimingOverrride:hsw | |
04945641 PZ |
323 | */ |
324 | I915_WRITE(_FDI_RXA_MISC, FDI_RX_PWRDN_LANE1_VAL(2) | | |
325 | FDI_RX_PWRDN_LANE0_VAL(2) | | |
326 | FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90); | |
327 | ||
328 | /* Enable the PCH Receiver FDI PLL */ | |
3e68320e | 329 | rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE | |
33d29b14 | 330 | FDI_RX_PLL_ENABLE | |
627eb5a3 | 331 | FDI_DP_PORT_WIDTH(intel_crtc->config.fdi_lanes); |
04945641 PZ |
332 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); |
333 | POSTING_READ(_FDI_RXA_CTL); | |
334 | udelay(220); | |
335 | ||
336 | /* Switch from Rawclk to PCDclk */ | |
337 | rx_ctl_val |= FDI_PCDCLK; | |
338 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
339 | ||
340 | /* Configure Port Clock Select */ | |
de7cfc63 DV |
341 | I915_WRITE(PORT_CLK_SEL(PORT_E), intel_crtc->config.ddi_pll_sel); |
342 | WARN_ON(intel_crtc->config.ddi_pll_sel != PORT_CLK_SEL_SPLL); | |
04945641 PZ |
343 | |
344 | /* Start the training iterating through available voltages and emphasis, | |
345 | * testing each value twice. */ | |
10122051 | 346 | for (i = 0; i < ARRAY_SIZE(hsw_ddi_translations_fdi) * 2; i++) { |
c82e4d26 ED |
347 | /* Configure DP_TP_CTL with auto-training */ |
348 | I915_WRITE(DP_TP_CTL(PORT_E), | |
349 | DP_TP_CTL_FDI_AUTOTRAIN | | |
350 | DP_TP_CTL_ENHANCED_FRAME_ENABLE | | |
351 | DP_TP_CTL_LINK_TRAIN_PAT1 | | |
352 | DP_TP_CTL_ENABLE); | |
353 | ||
876a8cdf DL |
354 | /* Configure and enable DDI_BUF_CTL for DDI E with next voltage. |
355 | * DDI E does not support port reversal, the functionality is | |
356 | * achieved on the PCH side in FDI_RX_CTL, so no need to set the | |
357 | * port reversal bit */ | |
c82e4d26 | 358 | I915_WRITE(DDI_BUF_CTL(PORT_E), |
04945641 | 359 | DDI_BUF_CTL_ENABLE | |
33d29b14 | 360 | ((intel_crtc->config.fdi_lanes - 1) << 1) | |
c5fe6a06 | 361 | DDI_BUF_TRANS_SELECT(i / 2)); |
04945641 | 362 | POSTING_READ(DDI_BUF_CTL(PORT_E)); |
c82e4d26 ED |
363 | |
364 | udelay(600); | |
365 | ||
04945641 PZ |
366 | /* Program PCH FDI Receiver TU */ |
367 | I915_WRITE(_FDI_RXA_TUSIZE1, TU_SIZE(64)); | |
368 | ||
369 | /* Enable PCH FDI Receiver with auto-training */ | |
370 | rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO; | |
371 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
372 | POSTING_READ(_FDI_RXA_CTL); | |
373 | ||
374 | /* Wait for FDI receiver lane calibration */ | |
375 | udelay(30); | |
376 | ||
377 | /* Unset FDI_RX_MISC pwrdn lanes */ | |
378 | temp = I915_READ(_FDI_RXA_MISC); | |
379 | temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
380 | I915_WRITE(_FDI_RXA_MISC, temp); | |
381 | POSTING_READ(_FDI_RXA_MISC); | |
382 | ||
383 | /* Wait for FDI auto training time */ | |
384 | udelay(5); | |
c82e4d26 ED |
385 | |
386 | temp = I915_READ(DP_TP_STATUS(PORT_E)); | |
387 | if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) { | |
04945641 | 388 | DRM_DEBUG_KMS("FDI link training done on step %d\n", i); |
c82e4d26 ED |
389 | |
390 | /* Enable normal pixel sending for FDI */ | |
391 | I915_WRITE(DP_TP_CTL(PORT_E), | |
04945641 PZ |
392 | DP_TP_CTL_FDI_AUTOTRAIN | |
393 | DP_TP_CTL_LINK_TRAIN_NORMAL | | |
394 | DP_TP_CTL_ENHANCED_FRAME_ENABLE | | |
395 | DP_TP_CTL_ENABLE); | |
c82e4d26 | 396 | |
04945641 | 397 | return; |
c82e4d26 | 398 | } |
04945641 | 399 | |
248138b5 PZ |
400 | temp = I915_READ(DDI_BUF_CTL(PORT_E)); |
401 | temp &= ~DDI_BUF_CTL_ENABLE; | |
402 | I915_WRITE(DDI_BUF_CTL(PORT_E), temp); | |
403 | POSTING_READ(DDI_BUF_CTL(PORT_E)); | |
404 | ||
04945641 | 405 | /* Disable DP_TP_CTL and FDI_RX_CTL and retry */ |
248138b5 PZ |
406 | temp = I915_READ(DP_TP_CTL(PORT_E)); |
407 | temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
408 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
409 | I915_WRITE(DP_TP_CTL(PORT_E), temp); | |
410 | POSTING_READ(DP_TP_CTL(PORT_E)); | |
411 | ||
412 | intel_wait_ddi_buf_idle(dev_priv, PORT_E); | |
04945641 PZ |
413 | |
414 | rx_ctl_val &= ~FDI_RX_ENABLE; | |
415 | I915_WRITE(_FDI_RXA_CTL, rx_ctl_val); | |
248138b5 | 416 | POSTING_READ(_FDI_RXA_CTL); |
04945641 PZ |
417 | |
418 | /* Reset FDI_RX_MISC pwrdn lanes */ | |
419 | temp = I915_READ(_FDI_RXA_MISC); | |
420 | temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
421 | temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); | |
422 | I915_WRITE(_FDI_RXA_MISC, temp); | |
248138b5 | 423 | POSTING_READ(_FDI_RXA_MISC); |
c82e4d26 ED |
424 | } |
425 | ||
04945641 | 426 | DRM_ERROR("FDI link training failed!\n"); |
c82e4d26 | 427 | } |
0e72a5b5 | 428 | |
44905a27 DA |
429 | void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder) |
430 | { | |
431 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
432 | struct intel_digital_port *intel_dig_port = | |
433 | enc_to_dig_port(&encoder->base); | |
434 | ||
435 | intel_dp->DP = intel_dig_port->saved_port_bits | | |
c5fe6a06 | 436 | DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0); |
44905a27 DA |
437 | intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count); |
438 | ||
439 | } | |
440 | ||
8d9ddbcb PZ |
441 | static struct intel_encoder * |
442 | intel_ddi_get_crtc_encoder(struct drm_crtc *crtc) | |
443 | { | |
444 | struct drm_device *dev = crtc->dev; | |
445 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
446 | struct intel_encoder *intel_encoder, *ret = NULL; | |
447 | int num_encoders = 0; | |
448 | ||
449 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { | |
450 | ret = intel_encoder; | |
451 | num_encoders++; | |
452 | } | |
453 | ||
454 | if (num_encoders != 1) | |
84f44ce7 VS |
455 | WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders, |
456 | pipe_name(intel_crtc->pipe)); | |
8d9ddbcb PZ |
457 | |
458 | BUG_ON(ret == NULL); | |
459 | return ret; | |
460 | } | |
461 | ||
d0737e1d ACO |
462 | static struct intel_encoder * |
463 | intel_ddi_get_crtc_new_encoder(struct intel_crtc *crtc) | |
464 | { | |
465 | struct drm_device *dev = crtc->base.dev; | |
466 | struct intel_encoder *intel_encoder, *ret = NULL; | |
467 | int num_encoders = 0; | |
468 | ||
469 | for_each_intel_encoder(dev, intel_encoder) { | |
470 | if (intel_encoder->new_crtc == crtc) { | |
471 | ret = intel_encoder; | |
472 | num_encoders++; | |
473 | } | |
474 | } | |
475 | ||
476 | WARN(num_encoders != 1, "%d encoders on crtc for pipe %c\n", num_encoders, | |
477 | pipe_name(crtc->pipe)); | |
478 | ||
479 | BUG_ON(ret == NULL); | |
480 | return ret; | |
481 | } | |
482 | ||
1c0b85c5 | 483 | #define LC_FREQ 2700 |
27893390 | 484 | #define LC_FREQ_2K U64_C(LC_FREQ * 2000) |
1c0b85c5 DL |
485 | |
486 | #define P_MIN 2 | |
487 | #define P_MAX 64 | |
488 | #define P_INC 2 | |
489 | ||
490 | /* Constraints for PLL good behavior */ | |
491 | #define REF_MIN 48 | |
492 | #define REF_MAX 400 | |
493 | #define VCO_MIN 2400 | |
494 | #define VCO_MAX 4800 | |
495 | ||
27893390 DL |
496 | #define abs_diff(a, b) ({ \ |
497 | typeof(a) __a = (a); \ | |
498 | typeof(b) __b = (b); \ | |
499 | (void) (&__a == &__b); \ | |
500 | __a > __b ? (__a - __b) : (__b - __a); }) | |
1c0b85c5 DL |
501 | |
502 | struct wrpll_rnp { | |
503 | unsigned p, n2, r2; | |
504 | }; | |
505 | ||
506 | static unsigned wrpll_get_budget_for_freq(int clock) | |
6441ab5f | 507 | { |
1c0b85c5 DL |
508 | unsigned budget; |
509 | ||
510 | switch (clock) { | |
511 | case 25175000: | |
512 | case 25200000: | |
513 | case 27000000: | |
514 | case 27027000: | |
515 | case 37762500: | |
516 | case 37800000: | |
517 | case 40500000: | |
518 | case 40541000: | |
519 | case 54000000: | |
520 | case 54054000: | |
521 | case 59341000: | |
522 | case 59400000: | |
523 | case 72000000: | |
524 | case 74176000: | |
525 | case 74250000: | |
526 | case 81000000: | |
527 | case 81081000: | |
528 | case 89012000: | |
529 | case 89100000: | |
530 | case 108000000: | |
531 | case 108108000: | |
532 | case 111264000: | |
533 | case 111375000: | |
534 | case 148352000: | |
535 | case 148500000: | |
536 | case 162000000: | |
537 | case 162162000: | |
538 | case 222525000: | |
539 | case 222750000: | |
540 | case 296703000: | |
541 | case 297000000: | |
542 | budget = 0; | |
543 | break; | |
544 | case 233500000: | |
545 | case 245250000: | |
546 | case 247750000: | |
547 | case 253250000: | |
548 | case 298000000: | |
549 | budget = 1500; | |
550 | break; | |
551 | case 169128000: | |
552 | case 169500000: | |
553 | case 179500000: | |
554 | case 202000000: | |
555 | budget = 2000; | |
556 | break; | |
557 | case 256250000: | |
558 | case 262500000: | |
559 | case 270000000: | |
560 | case 272500000: | |
561 | case 273750000: | |
562 | case 280750000: | |
563 | case 281250000: | |
564 | case 286000000: | |
565 | case 291750000: | |
566 | budget = 4000; | |
567 | break; | |
568 | case 267250000: | |
569 | case 268500000: | |
570 | budget = 5000; | |
571 | break; | |
572 | default: | |
573 | budget = 1000; | |
574 | break; | |
575 | } | |
6441ab5f | 576 | |
1c0b85c5 DL |
577 | return budget; |
578 | } | |
579 | ||
580 | static void wrpll_update_rnp(uint64_t freq2k, unsigned budget, | |
581 | unsigned r2, unsigned n2, unsigned p, | |
582 | struct wrpll_rnp *best) | |
583 | { | |
584 | uint64_t a, b, c, d, diff, diff_best; | |
6441ab5f | 585 | |
1c0b85c5 DL |
586 | /* No best (r,n,p) yet */ |
587 | if (best->p == 0) { | |
588 | best->p = p; | |
589 | best->n2 = n2; | |
590 | best->r2 = r2; | |
591 | return; | |
592 | } | |
6441ab5f | 593 | |
1c0b85c5 DL |
594 | /* |
595 | * Output clock is (LC_FREQ_2K / 2000) * N / (P * R), which compares to | |
596 | * freq2k. | |
597 | * | |
598 | * delta = 1e6 * | |
599 | * abs(freq2k - (LC_FREQ_2K * n2/(p * r2))) / | |
600 | * freq2k; | |
601 | * | |
602 | * and we would like delta <= budget. | |
603 | * | |
604 | * If the discrepancy is above the PPM-based budget, always prefer to | |
605 | * improve upon the previous solution. However, if you're within the | |
606 | * budget, try to maximize Ref * VCO, that is N / (P * R^2). | |
607 | */ | |
608 | a = freq2k * budget * p * r2; | |
609 | b = freq2k * budget * best->p * best->r2; | |
27893390 DL |
610 | diff = abs_diff(freq2k * p * r2, LC_FREQ_2K * n2); |
611 | diff_best = abs_diff(freq2k * best->p * best->r2, | |
612 | LC_FREQ_2K * best->n2); | |
1c0b85c5 DL |
613 | c = 1000000 * diff; |
614 | d = 1000000 * diff_best; | |
615 | ||
616 | if (a < c && b < d) { | |
617 | /* If both are above the budget, pick the closer */ | |
618 | if (best->p * best->r2 * diff < p * r2 * diff_best) { | |
619 | best->p = p; | |
620 | best->n2 = n2; | |
621 | best->r2 = r2; | |
622 | } | |
623 | } else if (a >= c && b < d) { | |
624 | /* If A is below the threshold but B is above it? Update. */ | |
625 | best->p = p; | |
626 | best->n2 = n2; | |
627 | best->r2 = r2; | |
628 | } else if (a >= c && b >= d) { | |
629 | /* Both are below the limit, so pick the higher n2/(r2*r2) */ | |
630 | if (n2 * best->r2 * best->r2 > best->n2 * r2 * r2) { | |
631 | best->p = p; | |
632 | best->n2 = n2; | |
633 | best->r2 = r2; | |
634 | } | |
635 | } | |
636 | /* Otherwise a < c && b >= d, do nothing */ | |
637 | } | |
638 | ||
11578553 JB |
639 | static int intel_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv, |
640 | int reg) | |
641 | { | |
642 | int refclk = LC_FREQ; | |
643 | int n, p, r; | |
644 | u32 wrpll; | |
645 | ||
646 | wrpll = I915_READ(reg); | |
114fe488 DV |
647 | switch (wrpll & WRPLL_PLL_REF_MASK) { |
648 | case WRPLL_PLL_SSC: | |
649 | case WRPLL_PLL_NON_SSC: | |
11578553 JB |
650 | /* |
651 | * We could calculate spread here, but our checking | |
652 | * code only cares about 5% accuracy, and spread is a max of | |
653 | * 0.5% downspread. | |
654 | */ | |
655 | refclk = 135; | |
656 | break; | |
114fe488 | 657 | case WRPLL_PLL_LCPLL: |
11578553 JB |
658 | refclk = LC_FREQ; |
659 | break; | |
660 | default: | |
661 | WARN(1, "bad wrpll refclk\n"); | |
662 | return 0; | |
663 | } | |
664 | ||
665 | r = wrpll & WRPLL_DIVIDER_REF_MASK; | |
666 | p = (wrpll & WRPLL_DIVIDER_POST_MASK) >> WRPLL_DIVIDER_POST_SHIFT; | |
667 | n = (wrpll & WRPLL_DIVIDER_FB_MASK) >> WRPLL_DIVIDER_FB_SHIFT; | |
668 | ||
20f0ec16 JB |
669 | /* Convert to KHz, p & r have a fixed point portion */ |
670 | return (refclk * n * 100) / (p * r); | |
11578553 JB |
671 | } |
672 | ||
3d51278a DV |
673 | static void hsw_ddi_clock_get(struct intel_encoder *encoder, |
674 | struct intel_crtc_config *pipe_config) | |
11578553 JB |
675 | { |
676 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
11578553 JB |
677 | int link_clock = 0; |
678 | u32 val, pll; | |
679 | ||
26804afd | 680 | val = pipe_config->ddi_pll_sel; |
11578553 JB |
681 | switch (val & PORT_CLK_SEL_MASK) { |
682 | case PORT_CLK_SEL_LCPLL_810: | |
683 | link_clock = 81000; | |
684 | break; | |
685 | case PORT_CLK_SEL_LCPLL_1350: | |
686 | link_clock = 135000; | |
687 | break; | |
688 | case PORT_CLK_SEL_LCPLL_2700: | |
689 | link_clock = 270000; | |
690 | break; | |
691 | case PORT_CLK_SEL_WRPLL1: | |
692 | link_clock = intel_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL1); | |
693 | break; | |
694 | case PORT_CLK_SEL_WRPLL2: | |
695 | link_clock = intel_ddi_calc_wrpll_link(dev_priv, WRPLL_CTL2); | |
696 | break; | |
697 | case PORT_CLK_SEL_SPLL: | |
698 | pll = I915_READ(SPLL_CTL) & SPLL_PLL_FREQ_MASK; | |
699 | if (pll == SPLL_PLL_FREQ_810MHz) | |
700 | link_clock = 81000; | |
701 | else if (pll == SPLL_PLL_FREQ_1350MHz) | |
702 | link_clock = 135000; | |
703 | else if (pll == SPLL_PLL_FREQ_2700MHz) | |
704 | link_clock = 270000; | |
705 | else { | |
706 | WARN(1, "bad spll freq\n"); | |
707 | return; | |
708 | } | |
709 | break; | |
710 | default: | |
711 | WARN(1, "bad port clock sel\n"); | |
712 | return; | |
713 | } | |
714 | ||
715 | pipe_config->port_clock = link_clock * 2; | |
716 | ||
717 | if (pipe_config->has_pch_encoder) | |
718 | pipe_config->adjusted_mode.crtc_clock = | |
719 | intel_dotclock_calculate(pipe_config->port_clock, | |
720 | &pipe_config->fdi_m_n); | |
721 | else if (pipe_config->has_dp_encoder) | |
722 | pipe_config->adjusted_mode.crtc_clock = | |
723 | intel_dotclock_calculate(pipe_config->port_clock, | |
724 | &pipe_config->dp_m_n); | |
725 | else | |
726 | pipe_config->adjusted_mode.crtc_clock = pipe_config->port_clock; | |
727 | } | |
728 | ||
3d51278a DV |
729 | void intel_ddi_clock_get(struct intel_encoder *encoder, |
730 | struct intel_crtc_config *pipe_config) | |
731 | { | |
732 | hsw_ddi_clock_get(encoder, pipe_config); | |
733 | } | |
734 | ||
1c0b85c5 | 735 | static void |
d664c0ce DL |
736 | hsw_ddi_calculate_wrpll(int clock /* in Hz */, |
737 | unsigned *r2_out, unsigned *n2_out, unsigned *p_out) | |
1c0b85c5 DL |
738 | { |
739 | uint64_t freq2k; | |
740 | unsigned p, n2, r2; | |
741 | struct wrpll_rnp best = { 0, 0, 0 }; | |
742 | unsigned budget; | |
743 | ||
744 | freq2k = clock / 100; | |
745 | ||
746 | budget = wrpll_get_budget_for_freq(clock); | |
747 | ||
748 | /* Special case handling for 540 pixel clock: bypass WR PLL entirely | |
749 | * and directly pass the LC PLL to it. */ | |
750 | if (freq2k == 5400000) { | |
751 | *n2_out = 2; | |
752 | *p_out = 1; | |
753 | *r2_out = 2; | |
754 | return; | |
755 | } | |
756 | ||
757 | /* | |
758 | * Ref = LC_FREQ / R, where Ref is the actual reference input seen by | |
759 | * the WR PLL. | |
760 | * | |
761 | * We want R so that REF_MIN <= Ref <= REF_MAX. | |
762 | * Injecting R2 = 2 * R gives: | |
763 | * REF_MAX * r2 > LC_FREQ * 2 and | |
764 | * REF_MIN * r2 < LC_FREQ * 2 | |
765 | * | |
766 | * Which means the desired boundaries for r2 are: | |
767 | * LC_FREQ * 2 / REF_MAX < r2 < LC_FREQ * 2 / REF_MIN | |
768 | * | |
769 | */ | |
770 | for (r2 = LC_FREQ * 2 / REF_MAX + 1; | |
771 | r2 <= LC_FREQ * 2 / REF_MIN; | |
772 | r2++) { | |
773 | ||
774 | /* | |
775 | * VCO = N * Ref, that is: VCO = N * LC_FREQ / R | |
776 | * | |
777 | * Once again we want VCO_MIN <= VCO <= VCO_MAX. | |
778 | * Injecting R2 = 2 * R and N2 = 2 * N, we get: | |
779 | * VCO_MAX * r2 > n2 * LC_FREQ and | |
780 | * VCO_MIN * r2 < n2 * LC_FREQ) | |
781 | * | |
782 | * Which means the desired boundaries for n2 are: | |
783 | * VCO_MIN * r2 / LC_FREQ < n2 < VCO_MAX * r2 / LC_FREQ | |
784 | */ | |
785 | for (n2 = VCO_MIN * r2 / LC_FREQ + 1; | |
786 | n2 <= VCO_MAX * r2 / LC_FREQ; | |
787 | n2++) { | |
788 | ||
789 | for (p = P_MIN; p <= P_MAX; p += P_INC) | |
790 | wrpll_update_rnp(freq2k, budget, | |
791 | r2, n2, p, &best); | |
792 | } | |
793 | } | |
6441ab5f | 794 | |
1c0b85c5 DL |
795 | *n2_out = best.n2; |
796 | *p_out = best.p; | |
797 | *r2_out = best.r2; | |
6441ab5f PZ |
798 | } |
799 | ||
0220ab6e | 800 | static bool |
d664c0ce DL |
801 | hsw_ddi_pll_select(struct intel_crtc *intel_crtc, |
802 | struct intel_encoder *intel_encoder, | |
803 | int clock) | |
6441ab5f | 804 | { |
d664c0ce | 805 | if (intel_encoder->type == INTEL_OUTPUT_HDMI) { |
e0b01be4 | 806 | struct intel_shared_dpll *pll; |
716c2e55 | 807 | uint32_t val; |
1c0b85c5 | 808 | unsigned p, n2, r2; |
6441ab5f | 809 | |
d664c0ce | 810 | hsw_ddi_calculate_wrpll(clock * 1000, &r2, &n2, &p); |
0694001b | 811 | |
114fe488 | 812 | val = WRPLL_PLL_ENABLE | WRPLL_PLL_LCPLL | |
0694001b PZ |
813 | WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) | |
814 | WRPLL_DIVIDER_POST(p); | |
815 | ||
d0737e1d | 816 | intel_crtc->new_config->dpll_hw_state.wrpll = val; |
6441ab5f | 817 | |
716c2e55 DV |
818 | pll = intel_get_shared_dpll(intel_crtc); |
819 | if (pll == NULL) { | |
820 | DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n", | |
821 | pipe_name(intel_crtc->pipe)); | |
822 | return false; | |
0694001b | 823 | } |
d452c5b6 | 824 | |
d0737e1d | 825 | intel_crtc->new_config->ddi_pll_sel = PORT_CLK_SEL_WRPLL(pll->id); |
6441ab5f PZ |
826 | } |
827 | ||
6441ab5f PZ |
828 | return true; |
829 | } | |
830 | ||
0220ab6e DL |
831 | |
832 | /* | |
833 | * Tries to find a *shared* PLL for the CRTC and store it in | |
834 | * intel_crtc->ddi_pll_sel. | |
835 | * | |
836 | * For private DPLLs, compute_config() should do the selection for us. This | |
837 | * function should be folded into compute_config() eventually. | |
838 | */ | |
839 | bool intel_ddi_pll_select(struct intel_crtc *intel_crtc) | |
840 | { | |
d0737e1d ACO |
841 | struct intel_encoder *intel_encoder = |
842 | intel_ddi_get_crtc_new_encoder(intel_crtc); | |
843 | int clock = intel_crtc->new_config->port_clock; | |
0220ab6e | 844 | |
d664c0ce | 845 | return hsw_ddi_pll_select(intel_crtc, intel_encoder, clock); |
0220ab6e DL |
846 | } |
847 | ||
dae84799 PZ |
848 | void intel_ddi_set_pipe_settings(struct drm_crtc *crtc) |
849 | { | |
850 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
851 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
852 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
3b117c8f | 853 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
dae84799 PZ |
854 | int type = intel_encoder->type; |
855 | uint32_t temp; | |
856 | ||
0e32b39c | 857 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP || type == INTEL_OUTPUT_DP_MST) { |
c9809791 | 858 | temp = TRANS_MSA_SYNC_CLK; |
965e0c48 | 859 | switch (intel_crtc->config.pipe_bpp) { |
dae84799 | 860 | case 18: |
c9809791 | 861 | temp |= TRANS_MSA_6_BPC; |
dae84799 PZ |
862 | break; |
863 | case 24: | |
c9809791 | 864 | temp |= TRANS_MSA_8_BPC; |
dae84799 PZ |
865 | break; |
866 | case 30: | |
c9809791 | 867 | temp |= TRANS_MSA_10_BPC; |
dae84799 PZ |
868 | break; |
869 | case 36: | |
c9809791 | 870 | temp |= TRANS_MSA_12_BPC; |
dae84799 PZ |
871 | break; |
872 | default: | |
4e53c2e0 | 873 | BUG(); |
dae84799 | 874 | } |
c9809791 | 875 | I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp); |
dae84799 PZ |
876 | } |
877 | } | |
878 | ||
0e32b39c DA |
879 | void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state) |
880 | { | |
881 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
882 | struct drm_device *dev = crtc->dev; | |
883 | struct drm_i915_private *dev_priv = dev->dev_private; | |
884 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; | |
885 | uint32_t temp; | |
886 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
887 | if (state == true) | |
888 | temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC; | |
889 | else | |
890 | temp &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC; | |
891 | I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); | |
892 | } | |
893 | ||
8228c251 | 894 | void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc) |
8d9ddbcb PZ |
895 | { |
896 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
897 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
7739c33b | 898 | struct drm_encoder *encoder = &intel_encoder->base; |
c7670b10 PZ |
899 | struct drm_device *dev = crtc->dev; |
900 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8d9ddbcb | 901 | enum pipe pipe = intel_crtc->pipe; |
3b117c8f | 902 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
174edf1f | 903 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
7739c33b | 904 | int type = intel_encoder->type; |
8d9ddbcb PZ |
905 | uint32_t temp; |
906 | ||
ad80a810 PZ |
907 | /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */ |
908 | temp = TRANS_DDI_FUNC_ENABLE; | |
174edf1f | 909 | temp |= TRANS_DDI_SELECT_PORT(port); |
dfcef252 | 910 | |
965e0c48 | 911 | switch (intel_crtc->config.pipe_bpp) { |
dfcef252 | 912 | case 18: |
ad80a810 | 913 | temp |= TRANS_DDI_BPC_6; |
dfcef252 PZ |
914 | break; |
915 | case 24: | |
ad80a810 | 916 | temp |= TRANS_DDI_BPC_8; |
dfcef252 PZ |
917 | break; |
918 | case 30: | |
ad80a810 | 919 | temp |= TRANS_DDI_BPC_10; |
dfcef252 PZ |
920 | break; |
921 | case 36: | |
ad80a810 | 922 | temp |= TRANS_DDI_BPC_12; |
dfcef252 PZ |
923 | break; |
924 | default: | |
4e53c2e0 | 925 | BUG(); |
dfcef252 | 926 | } |
72662e10 | 927 | |
a666283e | 928 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC) |
ad80a810 | 929 | temp |= TRANS_DDI_PVSYNC; |
a666283e | 930 | if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC) |
ad80a810 | 931 | temp |= TRANS_DDI_PHSYNC; |
f63eb7c4 | 932 | |
e6f0bfc4 PZ |
933 | if (cpu_transcoder == TRANSCODER_EDP) { |
934 | switch (pipe) { | |
935 | case PIPE_A: | |
c7670b10 PZ |
936 | /* On Haswell, can only use the always-on power well for |
937 | * eDP when not using the panel fitter, and when not | |
938 | * using motion blur mitigation (which we don't | |
939 | * support). */ | |
fabf6e51 DV |
940 | if (IS_HASWELL(dev) && |
941 | (intel_crtc->config.pch_pfit.enabled || | |
942 | intel_crtc->config.pch_pfit.force_thru)) | |
d6dd9eb1 DV |
943 | temp |= TRANS_DDI_EDP_INPUT_A_ONOFF; |
944 | else | |
945 | temp |= TRANS_DDI_EDP_INPUT_A_ON; | |
e6f0bfc4 PZ |
946 | break; |
947 | case PIPE_B: | |
948 | temp |= TRANS_DDI_EDP_INPUT_B_ONOFF; | |
949 | break; | |
950 | case PIPE_C: | |
951 | temp |= TRANS_DDI_EDP_INPUT_C_ONOFF; | |
952 | break; | |
953 | default: | |
954 | BUG(); | |
955 | break; | |
956 | } | |
957 | } | |
958 | ||
7739c33b | 959 | if (type == INTEL_OUTPUT_HDMI) { |
6897b4b5 | 960 | if (intel_crtc->config.has_hdmi_sink) |
ad80a810 | 961 | temp |= TRANS_DDI_MODE_SELECT_HDMI; |
8d9ddbcb | 962 | else |
ad80a810 | 963 | temp |= TRANS_DDI_MODE_SELECT_DVI; |
8d9ddbcb | 964 | |
7739c33b | 965 | } else if (type == INTEL_OUTPUT_ANALOG) { |
ad80a810 | 966 | temp |= TRANS_DDI_MODE_SELECT_FDI; |
33d29b14 | 967 | temp |= (intel_crtc->config.fdi_lanes - 1) << 1; |
7739c33b PZ |
968 | |
969 | } else if (type == INTEL_OUTPUT_DISPLAYPORT || | |
970 | type == INTEL_OUTPUT_EDP) { | |
971 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
972 | ||
0e32b39c DA |
973 | if (intel_dp->is_mst) { |
974 | temp |= TRANS_DDI_MODE_SELECT_DP_MST; | |
975 | } else | |
976 | temp |= TRANS_DDI_MODE_SELECT_DP_SST; | |
977 | ||
978 | temp |= DDI_PORT_WIDTH(intel_dp->lane_count); | |
979 | } else if (type == INTEL_OUTPUT_DP_MST) { | |
980 | struct intel_dp *intel_dp = &enc_to_mst(encoder)->primary->dp; | |
981 | ||
982 | if (intel_dp->is_mst) { | |
983 | temp |= TRANS_DDI_MODE_SELECT_DP_MST; | |
984 | } else | |
985 | temp |= TRANS_DDI_MODE_SELECT_DP_SST; | |
7739c33b | 986 | |
17aa6be9 | 987 | temp |= DDI_PORT_WIDTH(intel_dp->lane_count); |
8d9ddbcb | 988 | } else { |
84f44ce7 VS |
989 | WARN(1, "Invalid encoder type %d for pipe %c\n", |
990 | intel_encoder->type, pipe_name(pipe)); | |
8d9ddbcb PZ |
991 | } |
992 | ||
ad80a810 | 993 | I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp); |
8d9ddbcb | 994 | } |
72662e10 | 995 | |
ad80a810 PZ |
996 | void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv, |
997 | enum transcoder cpu_transcoder) | |
8d9ddbcb | 998 | { |
ad80a810 | 999 | uint32_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder); |
8d9ddbcb PZ |
1000 | uint32_t val = I915_READ(reg); |
1001 | ||
0e32b39c | 1002 | val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK | TRANS_DDI_DP_VC_PAYLOAD_ALLOC); |
ad80a810 | 1003 | val |= TRANS_DDI_PORT_NONE; |
8d9ddbcb | 1004 | I915_WRITE(reg, val); |
72662e10 ED |
1005 | } |
1006 | ||
bcbc889b PZ |
1007 | bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector) |
1008 | { | |
1009 | struct drm_device *dev = intel_connector->base.dev; | |
1010 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1011 | struct intel_encoder *intel_encoder = intel_connector->encoder; | |
1012 | int type = intel_connector->base.connector_type; | |
1013 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
1014 | enum pipe pipe = 0; | |
1015 | enum transcoder cpu_transcoder; | |
882244a3 | 1016 | enum intel_display_power_domain power_domain; |
bcbc889b PZ |
1017 | uint32_t tmp; |
1018 | ||
882244a3 | 1019 | power_domain = intel_display_port_power_domain(intel_encoder); |
f458ebbc | 1020 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
882244a3 PZ |
1021 | return false; |
1022 | ||
bcbc889b PZ |
1023 | if (!intel_encoder->get_hw_state(intel_encoder, &pipe)) |
1024 | return false; | |
1025 | ||
1026 | if (port == PORT_A) | |
1027 | cpu_transcoder = TRANSCODER_EDP; | |
1028 | else | |
1a240d4d | 1029 | cpu_transcoder = (enum transcoder) pipe; |
bcbc889b PZ |
1030 | |
1031 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
1032 | ||
1033 | switch (tmp & TRANS_DDI_MODE_SELECT_MASK) { | |
1034 | case TRANS_DDI_MODE_SELECT_HDMI: | |
1035 | case TRANS_DDI_MODE_SELECT_DVI: | |
1036 | return (type == DRM_MODE_CONNECTOR_HDMIA); | |
1037 | ||
1038 | case TRANS_DDI_MODE_SELECT_DP_SST: | |
1039 | if (type == DRM_MODE_CONNECTOR_eDP) | |
1040 | return true; | |
bcbc889b | 1041 | return (type == DRM_MODE_CONNECTOR_DisplayPort); |
0e32b39c DA |
1042 | case TRANS_DDI_MODE_SELECT_DP_MST: |
1043 | /* if the transcoder is in MST state then | |
1044 | * connector isn't connected */ | |
1045 | return false; | |
bcbc889b PZ |
1046 | |
1047 | case TRANS_DDI_MODE_SELECT_FDI: | |
1048 | return (type == DRM_MODE_CONNECTOR_VGA); | |
1049 | ||
1050 | default: | |
1051 | return false; | |
1052 | } | |
1053 | } | |
1054 | ||
85234cdc DV |
1055 | bool intel_ddi_get_hw_state(struct intel_encoder *encoder, |
1056 | enum pipe *pipe) | |
1057 | { | |
1058 | struct drm_device *dev = encoder->base.dev; | |
1059 | struct drm_i915_private *dev_priv = dev->dev_private; | |
fe43d3f5 | 1060 | enum port port = intel_ddi_get_encoder_port(encoder); |
6d129bea | 1061 | enum intel_display_power_domain power_domain; |
85234cdc DV |
1062 | u32 tmp; |
1063 | int i; | |
1064 | ||
6d129bea | 1065 | power_domain = intel_display_port_power_domain(encoder); |
f458ebbc | 1066 | if (!intel_display_power_is_enabled(dev_priv, power_domain)) |
6d129bea ID |
1067 | return false; |
1068 | ||
fe43d3f5 | 1069 | tmp = I915_READ(DDI_BUF_CTL(port)); |
85234cdc DV |
1070 | |
1071 | if (!(tmp & DDI_BUF_CTL_ENABLE)) | |
1072 | return false; | |
1073 | ||
ad80a810 PZ |
1074 | if (port == PORT_A) { |
1075 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP)); | |
85234cdc | 1076 | |
ad80a810 PZ |
1077 | switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { |
1078 | case TRANS_DDI_EDP_INPUT_A_ON: | |
1079 | case TRANS_DDI_EDP_INPUT_A_ONOFF: | |
1080 | *pipe = PIPE_A; | |
1081 | break; | |
1082 | case TRANS_DDI_EDP_INPUT_B_ONOFF: | |
1083 | *pipe = PIPE_B; | |
1084 | break; | |
1085 | case TRANS_DDI_EDP_INPUT_C_ONOFF: | |
1086 | *pipe = PIPE_C; | |
1087 | break; | |
1088 | } | |
1089 | ||
1090 | return true; | |
1091 | } else { | |
1092 | for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) { | |
1093 | tmp = I915_READ(TRANS_DDI_FUNC_CTL(i)); | |
1094 | ||
1095 | if ((tmp & TRANS_DDI_PORT_MASK) | |
1096 | == TRANS_DDI_SELECT_PORT(port)) { | |
0e32b39c DA |
1097 | if ((tmp & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_DP_MST) |
1098 | return false; | |
1099 | ||
ad80a810 PZ |
1100 | *pipe = i; |
1101 | return true; | |
1102 | } | |
85234cdc DV |
1103 | } |
1104 | } | |
1105 | ||
84f44ce7 | 1106 | DRM_DEBUG_KMS("No pipe for ddi port %c found\n", port_name(port)); |
85234cdc | 1107 | |
22f9fe50 | 1108 | return false; |
85234cdc DV |
1109 | } |
1110 | ||
fc914639 PZ |
1111 | void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc) |
1112 | { | |
1113 | struct drm_crtc *crtc = &intel_crtc->base; | |
1114 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
1115 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
1116 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
3b117c8f | 1117 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
fc914639 | 1118 | |
bb523fc0 PZ |
1119 | if (cpu_transcoder != TRANSCODER_EDP) |
1120 | I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), | |
1121 | TRANS_CLK_SEL_PORT(port)); | |
fc914639 PZ |
1122 | } |
1123 | ||
1124 | void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc) | |
1125 | { | |
1126 | struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private; | |
3b117c8f | 1127 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; |
fc914639 | 1128 | |
bb523fc0 PZ |
1129 | if (cpu_transcoder != TRANSCODER_EDP) |
1130 | I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), | |
1131 | TRANS_CLK_SEL_DISABLED); | |
fc914639 PZ |
1132 | } |
1133 | ||
00c09d70 | 1134 | static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) |
6441ab5f | 1135 | { |
c19b0669 | 1136 | struct drm_encoder *encoder = &intel_encoder->base; |
c19b0669 | 1137 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; |
30cf6db8 | 1138 | struct intel_crtc *crtc = to_intel_crtc(encoder->crtc); |
6441ab5f | 1139 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
82a4d9c0 | 1140 | int type = intel_encoder->type; |
6441ab5f | 1141 | |
82a4d9c0 PZ |
1142 | if (type == INTEL_OUTPUT_EDP) { |
1143 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
4be73780 | 1144 | intel_edp_panel_on(intel_dp); |
82a4d9c0 | 1145 | } |
6441ab5f | 1146 | |
de7cfc63 DV |
1147 | WARN_ON(crtc->config.ddi_pll_sel == PORT_CLK_SEL_NONE); |
1148 | I915_WRITE(PORT_CLK_SEL(port), crtc->config.ddi_pll_sel); | |
c19b0669 | 1149 | |
82a4d9c0 | 1150 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { |
c19b0669 | 1151 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
30cf6db8 | 1152 | |
44905a27 | 1153 | intel_ddi_init_dp_buf_reg(intel_encoder); |
c19b0669 PZ |
1154 | |
1155 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); | |
1156 | intel_dp_start_link_train(intel_dp); | |
1157 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 ID |
1158 | if (port != PORT_A) |
1159 | intel_dp_stop_link_train(intel_dp); | |
30cf6db8 DV |
1160 | } else if (type == INTEL_OUTPUT_HDMI) { |
1161 | struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder); | |
1162 | ||
1163 | intel_hdmi->set_infoframes(encoder, | |
1164 | crtc->config.has_hdmi_sink, | |
1165 | &crtc->config.adjusted_mode); | |
c19b0669 | 1166 | } |
6441ab5f PZ |
1167 | } |
1168 | ||
00c09d70 | 1169 | static void intel_ddi_post_disable(struct intel_encoder *intel_encoder) |
6441ab5f PZ |
1170 | { |
1171 | struct drm_encoder *encoder = &intel_encoder->base; | |
1172 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; | |
1173 | enum port port = intel_ddi_get_encoder_port(intel_encoder); | |
82a4d9c0 | 1174 | int type = intel_encoder->type; |
2886e93f | 1175 | uint32_t val; |
a836bdf9 | 1176 | bool wait = false; |
2886e93f PZ |
1177 | |
1178 | val = I915_READ(DDI_BUF_CTL(port)); | |
1179 | if (val & DDI_BUF_CTL_ENABLE) { | |
1180 | val &= ~DDI_BUF_CTL_ENABLE; | |
1181 | I915_WRITE(DDI_BUF_CTL(port), val); | |
a836bdf9 | 1182 | wait = true; |
2886e93f | 1183 | } |
6441ab5f | 1184 | |
a836bdf9 PZ |
1185 | val = I915_READ(DP_TP_CTL(port)); |
1186 | val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
1187 | val |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
1188 | I915_WRITE(DP_TP_CTL(port), val); | |
1189 | ||
1190 | if (wait) | |
1191 | intel_wait_ddi_buf_idle(dev_priv, port); | |
1192 | ||
76bb80ed | 1193 | if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { |
82a4d9c0 | 1194 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
76bb80ed | 1195 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); |
24f3e092 | 1196 | intel_edp_panel_vdd_on(intel_dp); |
4be73780 | 1197 | intel_edp_panel_off(intel_dp); |
82a4d9c0 PZ |
1198 | } |
1199 | ||
6441ab5f PZ |
1200 | I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE); |
1201 | } | |
1202 | ||
00c09d70 | 1203 | static void intel_enable_ddi(struct intel_encoder *intel_encoder) |
72662e10 | 1204 | { |
6547fef8 | 1205 | struct drm_encoder *encoder = &intel_encoder->base; |
7b9f35a6 WX |
1206 | struct drm_crtc *crtc = encoder->crtc; |
1207 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
6547fef8 | 1208 | struct drm_device *dev = encoder->dev; |
72662e10 | 1209 | struct drm_i915_private *dev_priv = dev->dev_private; |
6547fef8 PZ |
1210 | enum port port = intel_ddi_get_encoder_port(intel_encoder); |
1211 | int type = intel_encoder->type; | |
72662e10 | 1212 | |
6547fef8 | 1213 | if (type == INTEL_OUTPUT_HDMI) { |
876a8cdf DL |
1214 | struct intel_digital_port *intel_dig_port = |
1215 | enc_to_dig_port(encoder); | |
1216 | ||
6547fef8 PZ |
1217 | /* In HDMI/DVI mode, the port width, and swing/emphasis values |
1218 | * are ignored so nothing special needs to be done besides | |
1219 | * enabling the port. | |
1220 | */ | |
876a8cdf | 1221 | I915_WRITE(DDI_BUF_CTL(port), |
bcf53de4 SM |
1222 | intel_dig_port->saved_port_bits | |
1223 | DDI_BUF_CTL_ENABLE); | |
d6c50ff8 PZ |
1224 | } else if (type == INTEL_OUTPUT_EDP) { |
1225 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
1226 | ||
3ab9c637 ID |
1227 | if (port == PORT_A) |
1228 | intel_dp_stop_link_train(intel_dp); | |
1229 | ||
4be73780 | 1230 | intel_edp_backlight_on(intel_dp); |
4906557e | 1231 | intel_edp_psr_enable(intel_dp); |
6547fef8 | 1232 | } |
7b9f35a6 | 1233 | |
9ed109a7 | 1234 | if (intel_crtc->config.has_audio) { |
d45a0bf5 | 1235 | intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO); |
69bfe1a9 | 1236 | intel_audio_codec_enable(intel_encoder); |
7b9f35a6 | 1237 | } |
5ab432ef DV |
1238 | } |
1239 | ||
00c09d70 | 1240 | static void intel_disable_ddi(struct intel_encoder *intel_encoder) |
5ab432ef | 1241 | { |
d6c50ff8 | 1242 | struct drm_encoder *encoder = &intel_encoder->base; |
7b9f35a6 WX |
1243 | struct drm_crtc *crtc = encoder->crtc; |
1244 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
d6c50ff8 | 1245 | int type = intel_encoder->type; |
7b9f35a6 WX |
1246 | struct drm_device *dev = encoder->dev; |
1247 | struct drm_i915_private *dev_priv = dev->dev_private; | |
d6c50ff8 | 1248 | |
d45a0bf5 | 1249 | if (intel_crtc->config.has_audio) { |
69bfe1a9 | 1250 | intel_audio_codec_disable(intel_encoder); |
d45a0bf5 PZ |
1251 | intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO); |
1252 | } | |
2831d842 | 1253 | |
d6c50ff8 PZ |
1254 | if (type == INTEL_OUTPUT_EDP) { |
1255 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
1256 | ||
4906557e | 1257 | intel_edp_psr_disable(intel_dp); |
4be73780 | 1258 | intel_edp_backlight_off(intel_dp); |
d6c50ff8 | 1259 | } |
72662e10 | 1260 | } |
79f689aa | 1261 | |
121643c2 S |
1262 | static int skl_get_cdclk_freq(struct drm_i915_private *dev_priv) |
1263 | { | |
1264 | uint32_t lcpll1 = I915_READ(LCPLL1_CTL); | |
1265 | uint32_t cdctl = I915_READ(CDCLK_CTL); | |
1266 | uint32_t linkrate; | |
1267 | ||
1268 | if (!(lcpll1 & LCPLL_PLL_ENABLE)) { | |
1269 | WARN(1, "LCPLL1 not enabled\n"); | |
1270 | return 24000; /* 24MHz is the cd freq with NSSC ref */ | |
1271 | } | |
1272 | ||
1273 | if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540) | |
1274 | return 540000; | |
1275 | ||
1276 | linkrate = (I915_READ(DPLL_CTRL1) & | |
1277 | DPLL_CRTL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1; | |
1278 | ||
1279 | if (linkrate == DPLL_CRTL1_LINK_RATE_2160 || | |
1280 | linkrate == DPLL_CRTL1_LINK_RATE_1080) { | |
1281 | /* vco 8640 */ | |
1282 | switch (cdctl & CDCLK_FREQ_SEL_MASK) { | |
1283 | case CDCLK_FREQ_450_432: | |
1284 | return 432000; | |
1285 | case CDCLK_FREQ_337_308: | |
1286 | return 308570; | |
1287 | case CDCLK_FREQ_675_617: | |
1288 | return 617140; | |
1289 | default: | |
1290 | WARN(1, "Unknown cd freq selection\n"); | |
1291 | } | |
1292 | } else { | |
1293 | /* vco 8100 */ | |
1294 | switch (cdctl & CDCLK_FREQ_SEL_MASK) { | |
1295 | case CDCLK_FREQ_450_432: | |
1296 | return 450000; | |
1297 | case CDCLK_FREQ_337_308: | |
1298 | return 337500; | |
1299 | case CDCLK_FREQ_675_617: | |
1300 | return 675000; | |
1301 | default: | |
1302 | WARN(1, "Unknown cd freq selection\n"); | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* error case, do as if DPLL0 isn't enabled */ | |
1307 | return 24000; | |
1308 | } | |
1309 | ||
ad13d604 DL |
1310 | static int bdw_get_cdclk_freq(struct drm_i915_private *dev_priv) |
1311 | { | |
1312 | uint32_t lcpll = I915_READ(LCPLL_CTL); | |
1313 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; | |
1314 | ||
1315 | if (lcpll & LCPLL_CD_SOURCE_FCLK) | |
1316 | return 800000; | |
1317 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) | |
1318 | return 450000; | |
1319 | else if (freq == LCPLL_CLK_FREQ_450) | |
1320 | return 450000; | |
1321 | else if (freq == LCPLL_CLK_FREQ_54O_BDW) | |
1322 | return 540000; | |
1323 | else if (freq == LCPLL_CLK_FREQ_337_5_BDW) | |
1324 | return 337500; | |
1325 | else | |
1326 | return 675000; | |
1327 | } | |
1328 | ||
1329 | static int hsw_get_cdclk_freq(struct drm_i915_private *dev_priv) | |
79f689aa | 1330 | { |
e39bf98a | 1331 | struct drm_device *dev = dev_priv->dev; |
a4006641 | 1332 | uint32_t lcpll = I915_READ(LCPLL_CTL); |
e39bf98a | 1333 | uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK; |
a4006641 | 1334 | |
ad13d604 | 1335 | if (lcpll & LCPLL_CD_SOURCE_FCLK) |
a4006641 | 1336 | return 800000; |
ad13d604 | 1337 | else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT) |
b2b877ff | 1338 | return 450000; |
ad13d604 | 1339 | else if (freq == LCPLL_CLK_FREQ_450) |
b2b877ff | 1340 | return 450000; |
95626e7c | 1341 | else if (IS_HSW_ULT(dev)) |
ad13d604 DL |
1342 | return 337500; |
1343 | else | |
1344 | return 540000; | |
1345 | } | |
1346 | ||
1347 | int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv) | |
1348 | { | |
1349 | struct drm_device *dev = dev_priv->dev; | |
1350 | ||
121643c2 S |
1351 | if (IS_SKYLAKE(dev)) |
1352 | return skl_get_cdclk_freq(dev_priv); | |
1353 | ||
ad13d604 DL |
1354 | if (IS_BROADWELL(dev)) |
1355 | return bdw_get_cdclk_freq(dev_priv); | |
1356 | ||
1357 | /* Haswell */ | |
1358 | return hsw_get_cdclk_freq(dev_priv); | |
79f689aa PZ |
1359 | } |
1360 | ||
e0b01be4 DV |
1361 | static void hsw_ddi_pll_enable(struct drm_i915_private *dev_priv, |
1362 | struct intel_shared_dpll *pll) | |
1363 | { | |
3e369b76 | 1364 | I915_WRITE(WRPLL_CTL(pll->id), pll->config.hw_state.wrpll); |
e0b01be4 DV |
1365 | POSTING_READ(WRPLL_CTL(pll->id)); |
1366 | udelay(20); | |
1367 | } | |
1368 | ||
12030431 DV |
1369 | static void hsw_ddi_pll_disable(struct drm_i915_private *dev_priv, |
1370 | struct intel_shared_dpll *pll) | |
1371 | { | |
1372 | uint32_t val; | |
1373 | ||
1374 | val = I915_READ(WRPLL_CTL(pll->id)); | |
12030431 DV |
1375 | I915_WRITE(WRPLL_CTL(pll->id), val & ~WRPLL_PLL_ENABLE); |
1376 | POSTING_READ(WRPLL_CTL(pll->id)); | |
1377 | } | |
1378 | ||
d452c5b6 DV |
1379 | static bool hsw_ddi_pll_get_hw_state(struct drm_i915_private *dev_priv, |
1380 | struct intel_shared_dpll *pll, | |
1381 | struct intel_dpll_hw_state *hw_state) | |
1382 | { | |
1383 | uint32_t val; | |
1384 | ||
f458ebbc | 1385 | if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS)) |
d452c5b6 DV |
1386 | return false; |
1387 | ||
1388 | val = I915_READ(WRPLL_CTL(pll->id)); | |
1389 | hw_state->wrpll = val; | |
1390 | ||
1391 | return val & WRPLL_PLL_ENABLE; | |
1392 | } | |
1393 | ||
ca1381b5 | 1394 | static const char * const hsw_ddi_pll_names[] = { |
9cd86933 DV |
1395 | "WRPLL 1", |
1396 | "WRPLL 2", | |
1397 | }; | |
1398 | ||
143b307c | 1399 | static void hsw_shared_dplls_init(struct drm_i915_private *dev_priv) |
79f689aa | 1400 | { |
9cd86933 DV |
1401 | int i; |
1402 | ||
716c2e55 | 1403 | dev_priv->num_shared_dpll = 2; |
9cd86933 | 1404 | |
716c2e55 | 1405 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { |
9cd86933 DV |
1406 | dev_priv->shared_dplls[i].id = i; |
1407 | dev_priv->shared_dplls[i].name = hsw_ddi_pll_names[i]; | |
12030431 | 1408 | dev_priv->shared_dplls[i].disable = hsw_ddi_pll_disable; |
e0b01be4 | 1409 | dev_priv->shared_dplls[i].enable = hsw_ddi_pll_enable; |
d452c5b6 DV |
1410 | dev_priv->shared_dplls[i].get_hw_state = |
1411 | hsw_ddi_pll_get_hw_state; | |
9cd86933 | 1412 | } |
143b307c DL |
1413 | } |
1414 | ||
1415 | void intel_ddi_pll_init(struct drm_device *dev) | |
1416 | { | |
1417 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1418 | uint32_t val = I915_READ(LCPLL_CTL); | |
1419 | ||
1420 | hsw_shared_dplls_init(dev_priv); | |
79f689aa | 1421 | |
b2b877ff | 1422 | DRM_DEBUG_KMS("CDCLK running at %dKHz\n", |
79f689aa PZ |
1423 | intel_ddi_get_cdclk_freq(dev_priv)); |
1424 | ||
121643c2 S |
1425 | if (IS_SKYLAKE(dev)) { |
1426 | if (!(I915_READ(LCPLL1_CTL) & LCPLL_PLL_ENABLE)) | |
1427 | DRM_ERROR("LCPLL1 is disabled\n"); | |
1428 | } else { | |
1429 | /* | |
1430 | * The LCPLL register should be turned on by the BIOS. For now | |
1431 | * let's just check its state and print errors in case | |
1432 | * something is wrong. Don't even try to turn it on. | |
1433 | */ | |
1434 | ||
1435 | if (val & LCPLL_CD_SOURCE_FCLK) | |
1436 | DRM_ERROR("CDCLK source is not LCPLL\n"); | |
79f689aa | 1437 | |
121643c2 S |
1438 | if (val & LCPLL_PLL_DISABLE) |
1439 | DRM_ERROR("LCPLL is disabled\n"); | |
1440 | } | |
79f689aa | 1441 | } |
c19b0669 PZ |
1442 | |
1443 | void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder) | |
1444 | { | |
174edf1f PZ |
1445 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
1446 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
c19b0669 | 1447 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; |
174edf1f | 1448 | enum port port = intel_dig_port->port; |
c19b0669 | 1449 | uint32_t val; |
f3e227df | 1450 | bool wait = false; |
c19b0669 PZ |
1451 | |
1452 | if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) { | |
1453 | val = I915_READ(DDI_BUF_CTL(port)); | |
1454 | if (val & DDI_BUF_CTL_ENABLE) { | |
1455 | val &= ~DDI_BUF_CTL_ENABLE; | |
1456 | I915_WRITE(DDI_BUF_CTL(port), val); | |
1457 | wait = true; | |
1458 | } | |
1459 | ||
1460 | val = I915_READ(DP_TP_CTL(port)); | |
1461 | val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK); | |
1462 | val |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
1463 | I915_WRITE(DP_TP_CTL(port), val); | |
1464 | POSTING_READ(DP_TP_CTL(port)); | |
1465 | ||
1466 | if (wait) | |
1467 | intel_wait_ddi_buf_idle(dev_priv, port); | |
1468 | } | |
1469 | ||
0e32b39c | 1470 | val = DP_TP_CTL_ENABLE | |
c19b0669 | 1471 | DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE; |
0e32b39c DA |
1472 | if (intel_dp->is_mst) |
1473 | val |= DP_TP_CTL_MODE_MST; | |
1474 | else { | |
1475 | val |= DP_TP_CTL_MODE_SST; | |
1476 | if (drm_dp_enhanced_frame_cap(intel_dp->dpcd)) | |
1477 | val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE; | |
1478 | } | |
c19b0669 PZ |
1479 | I915_WRITE(DP_TP_CTL(port), val); |
1480 | POSTING_READ(DP_TP_CTL(port)); | |
1481 | ||
1482 | intel_dp->DP |= DDI_BUF_CTL_ENABLE; | |
1483 | I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP); | |
1484 | POSTING_READ(DDI_BUF_CTL(port)); | |
1485 | ||
1486 | udelay(600); | |
1487 | } | |
00c09d70 | 1488 | |
1ad960f2 PZ |
1489 | void intel_ddi_fdi_disable(struct drm_crtc *crtc) |
1490 | { | |
1491 | struct drm_i915_private *dev_priv = crtc->dev->dev_private; | |
1492 | struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); | |
1493 | uint32_t val; | |
1494 | ||
1495 | intel_ddi_post_disable(intel_encoder); | |
1496 | ||
1497 | val = I915_READ(_FDI_RXA_CTL); | |
1498 | val &= ~FDI_RX_ENABLE; | |
1499 | I915_WRITE(_FDI_RXA_CTL, val); | |
1500 | ||
1501 | val = I915_READ(_FDI_RXA_MISC); | |
1502 | val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); | |
1503 | val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); | |
1504 | I915_WRITE(_FDI_RXA_MISC, val); | |
1505 | ||
1506 | val = I915_READ(_FDI_RXA_CTL); | |
1507 | val &= ~FDI_PCDCLK; | |
1508 | I915_WRITE(_FDI_RXA_CTL, val); | |
1509 | ||
1510 | val = I915_READ(_FDI_RXA_CTL); | |
1511 | val &= ~FDI_RX_PLL_ENABLE; | |
1512 | I915_WRITE(_FDI_RXA_CTL, val); | |
1513 | } | |
1514 | ||
00c09d70 PZ |
1515 | static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder) |
1516 | { | |
0e32b39c DA |
1517 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(&intel_encoder->base); |
1518 | int type = intel_dig_port->base.type; | |
1519 | ||
1520 | if (type != INTEL_OUTPUT_DISPLAYPORT && | |
1521 | type != INTEL_OUTPUT_EDP && | |
1522 | type != INTEL_OUTPUT_UNKNOWN) { | |
1523 | return; | |
1524 | } | |
00c09d70 | 1525 | |
0e32b39c | 1526 | intel_dp_hot_plug(intel_encoder); |
00c09d70 PZ |
1527 | } |
1528 | ||
6801c18c VS |
1529 | void intel_ddi_get_config(struct intel_encoder *encoder, |
1530 | struct intel_crtc_config *pipe_config) | |
045ac3b5 JB |
1531 | { |
1532 | struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; | |
1533 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); | |
1534 | enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; | |
1535 | u32 temp, flags = 0; | |
1536 | ||
1537 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
1538 | if (temp & TRANS_DDI_PHSYNC) | |
1539 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1540 | else | |
1541 | flags |= DRM_MODE_FLAG_NHSYNC; | |
1542 | if (temp & TRANS_DDI_PVSYNC) | |
1543 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1544 | else | |
1545 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1546 | ||
1547 | pipe_config->adjusted_mode.flags |= flags; | |
42571aef VS |
1548 | |
1549 | switch (temp & TRANS_DDI_BPC_MASK) { | |
1550 | case TRANS_DDI_BPC_6: | |
1551 | pipe_config->pipe_bpp = 18; | |
1552 | break; | |
1553 | case TRANS_DDI_BPC_8: | |
1554 | pipe_config->pipe_bpp = 24; | |
1555 | break; | |
1556 | case TRANS_DDI_BPC_10: | |
1557 | pipe_config->pipe_bpp = 30; | |
1558 | break; | |
1559 | case TRANS_DDI_BPC_12: | |
1560 | pipe_config->pipe_bpp = 36; | |
1561 | break; | |
1562 | default: | |
1563 | break; | |
1564 | } | |
eb14cb74 VS |
1565 | |
1566 | switch (temp & TRANS_DDI_MODE_SELECT_MASK) { | |
1567 | case TRANS_DDI_MODE_SELECT_HDMI: | |
6897b4b5 | 1568 | pipe_config->has_hdmi_sink = true; |
eb14cb74 VS |
1569 | case TRANS_DDI_MODE_SELECT_DVI: |
1570 | case TRANS_DDI_MODE_SELECT_FDI: | |
1571 | break; | |
1572 | case TRANS_DDI_MODE_SELECT_DP_SST: | |
1573 | case TRANS_DDI_MODE_SELECT_DP_MST: | |
1574 | pipe_config->has_dp_encoder = true; | |
1575 | intel_dp_get_m_n(intel_crtc, pipe_config); | |
1576 | break; | |
1577 | default: | |
1578 | break; | |
1579 | } | |
10214420 | 1580 | |
f458ebbc | 1581 | if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) { |
a60551b1 | 1582 | temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD); |
82910ac6 | 1583 | if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe)) |
a60551b1 PZ |
1584 | pipe_config->has_audio = true; |
1585 | } | |
9ed109a7 | 1586 | |
10214420 DV |
1587 | if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp_bpp && |
1588 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1589 | /* | |
1590 | * This is a big fat ugly hack. | |
1591 | * | |
1592 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1593 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1594 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1595 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1596 | * max, not what it tells us to use. | |
1597 | * | |
1598 | * Note: This will still be broken if the eDP panel is not lit | |
1599 | * up by the BIOS, and thus we can't get the mode at module | |
1600 | * load. | |
1601 | */ | |
1602 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1603 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1604 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1605 | } | |
11578553 | 1606 | |
3d51278a | 1607 | hsw_ddi_clock_get(encoder, pipe_config); |
045ac3b5 JB |
1608 | } |
1609 | ||
00c09d70 PZ |
1610 | static void intel_ddi_destroy(struct drm_encoder *encoder) |
1611 | { | |
1612 | /* HDMI has nothing special to destroy, so we can go with this. */ | |
1613 | intel_dp_encoder_destroy(encoder); | |
1614 | } | |
1615 | ||
5bfe2ac0 DV |
1616 | static bool intel_ddi_compute_config(struct intel_encoder *encoder, |
1617 | struct intel_crtc_config *pipe_config) | |
00c09d70 | 1618 | { |
5bfe2ac0 | 1619 | int type = encoder->type; |
eccb140b | 1620 | int port = intel_ddi_get_encoder_port(encoder); |
00c09d70 | 1621 | |
5bfe2ac0 | 1622 | WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n"); |
00c09d70 | 1623 | |
eccb140b DV |
1624 | if (port == PORT_A) |
1625 | pipe_config->cpu_transcoder = TRANSCODER_EDP; | |
1626 | ||
00c09d70 | 1627 | if (type == INTEL_OUTPUT_HDMI) |
5bfe2ac0 | 1628 | return intel_hdmi_compute_config(encoder, pipe_config); |
00c09d70 | 1629 | else |
5bfe2ac0 | 1630 | return intel_dp_compute_config(encoder, pipe_config); |
00c09d70 PZ |
1631 | } |
1632 | ||
1633 | static const struct drm_encoder_funcs intel_ddi_funcs = { | |
1634 | .destroy = intel_ddi_destroy, | |
1635 | }; | |
1636 | ||
4a28ae58 PZ |
1637 | static struct intel_connector * |
1638 | intel_ddi_init_dp_connector(struct intel_digital_port *intel_dig_port) | |
1639 | { | |
1640 | struct intel_connector *connector; | |
1641 | enum port port = intel_dig_port->port; | |
1642 | ||
1643 | connector = kzalloc(sizeof(*connector), GFP_KERNEL); | |
1644 | if (!connector) | |
1645 | return NULL; | |
1646 | ||
1647 | intel_dig_port->dp.output_reg = DDI_BUF_CTL(port); | |
1648 | if (!intel_dp_init_connector(intel_dig_port, connector)) { | |
1649 | kfree(connector); | |
1650 | return NULL; | |
1651 | } | |
1652 | ||
1653 | return connector; | |
1654 | } | |
1655 | ||
1656 | static struct intel_connector * | |
1657 | intel_ddi_init_hdmi_connector(struct intel_digital_port *intel_dig_port) | |
1658 | { | |
1659 | struct intel_connector *connector; | |
1660 | enum port port = intel_dig_port->port; | |
1661 | ||
1662 | connector = kzalloc(sizeof(*connector), GFP_KERNEL); | |
1663 | if (!connector) | |
1664 | return NULL; | |
1665 | ||
1666 | intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port); | |
1667 | intel_hdmi_init_connector(intel_dig_port, connector); | |
1668 | ||
1669 | return connector; | |
1670 | } | |
1671 | ||
00c09d70 PZ |
1672 | void intel_ddi_init(struct drm_device *dev, enum port port) |
1673 | { | |
876a8cdf | 1674 | struct drm_i915_private *dev_priv = dev->dev_private; |
00c09d70 PZ |
1675 | struct intel_digital_port *intel_dig_port; |
1676 | struct intel_encoder *intel_encoder; | |
1677 | struct drm_encoder *encoder; | |
311a2094 PZ |
1678 | bool init_hdmi, init_dp; |
1679 | ||
1680 | init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi || | |
1681 | dev_priv->vbt.ddi_port_info[port].supports_hdmi); | |
1682 | init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp; | |
1683 | if (!init_dp && !init_hdmi) { | |
f68d697e | 1684 | DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, assuming it is\n", |
311a2094 PZ |
1685 | port_name(port)); |
1686 | init_hdmi = true; | |
1687 | init_dp = true; | |
1688 | } | |
00c09d70 | 1689 | |
b14c5679 | 1690 | intel_dig_port = kzalloc(sizeof(*intel_dig_port), GFP_KERNEL); |
00c09d70 PZ |
1691 | if (!intel_dig_port) |
1692 | return; | |
1693 | ||
00c09d70 PZ |
1694 | intel_encoder = &intel_dig_port->base; |
1695 | encoder = &intel_encoder->base; | |
1696 | ||
1697 | drm_encoder_init(dev, encoder, &intel_ddi_funcs, | |
1698 | DRM_MODE_ENCODER_TMDS); | |
00c09d70 | 1699 | |
5bfe2ac0 | 1700 | intel_encoder->compute_config = intel_ddi_compute_config; |
00c09d70 PZ |
1701 | intel_encoder->enable = intel_enable_ddi; |
1702 | intel_encoder->pre_enable = intel_ddi_pre_enable; | |
1703 | intel_encoder->disable = intel_disable_ddi; | |
1704 | intel_encoder->post_disable = intel_ddi_post_disable; | |
1705 | intel_encoder->get_hw_state = intel_ddi_get_hw_state; | |
045ac3b5 | 1706 | intel_encoder->get_config = intel_ddi_get_config; |
00c09d70 PZ |
1707 | |
1708 | intel_dig_port->port = port; | |
bcf53de4 SM |
1709 | intel_dig_port->saved_port_bits = I915_READ(DDI_BUF_CTL(port)) & |
1710 | (DDI_BUF_PORT_REVERSAL | | |
1711 | DDI_A_4_LANES); | |
00c09d70 PZ |
1712 | |
1713 | intel_encoder->type = INTEL_OUTPUT_UNKNOWN; | |
f68d697e | 1714 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
bc079e8b | 1715 | intel_encoder->cloneable = 0; |
00c09d70 PZ |
1716 | intel_encoder->hot_plug = intel_ddi_hot_plug; |
1717 | ||
f68d697e CW |
1718 | if (init_dp) { |
1719 | if (!intel_ddi_init_dp_connector(intel_dig_port)) | |
1720 | goto err; | |
13cf5504 | 1721 | |
f68d697e CW |
1722 | intel_dig_port->hpd_pulse = intel_dp_hpd_pulse; |
1723 | dev_priv->hpd_irq_port[port] = intel_dig_port; | |
1724 | } | |
21a8e6a4 | 1725 | |
311a2094 PZ |
1726 | /* In theory we don't need the encoder->type check, but leave it just in |
1727 | * case we have some really bad VBTs... */ | |
f68d697e CW |
1728 | if (intel_encoder->type != INTEL_OUTPUT_EDP && init_hdmi) { |
1729 | if (!intel_ddi_init_hdmi_connector(intel_dig_port)) | |
1730 | goto err; | |
21a8e6a4 | 1731 | } |
f68d697e CW |
1732 | |
1733 | return; | |
1734 | ||
1735 | err: | |
1736 | drm_encoder_cleanup(encoder); | |
1737 | kfree(intel_dig_port); | |
00c09d70 | 1738 | } |