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79e53945 | 1 | /* |
39507259 | 2 | * Copyright © 2006 Intel Corporation |
79e53945 JB |
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 FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | * | |
26 | */ | |
25e341cf | 27 | #include <linux/dmi.h> |
9f0e7ff4 | 28 | #include <drm/drm_dp_helper.h> |
760285e7 DH |
29 | #include <drm/drmP.h> |
30 | #include <drm/i915_drm.h> | |
79e53945 JB |
31 | #include "i915_drv.h" |
32 | #include "intel_bios.h" | |
33 | ||
9b9d172d | 34 | #define SLAVE_ADDR1 0x70 |
35 | #define SLAVE_ADDR2 0x72 | |
79e53945 | 36 | |
500a8cc4 ZW |
37 | static int panel_type; |
38 | ||
e8ef3b4c JN |
39 | static const void * |
40 | find_section(const void *_bdb, int section_id) | |
79e53945 | 41 | { |
e8ef3b4c JN |
42 | const struct bdb_header *bdb = _bdb; |
43 | const u8 *base = _bdb; | |
79e53945 JB |
44 | int index = 0; |
45 | u16 total, current_size; | |
46 | u8 current_id; | |
47 | ||
48 | /* skip to first section */ | |
49 | index += bdb->header_size; | |
50 | total = bdb->bdb_size; | |
51 | ||
52 | /* walk the sections looking for section_id */ | |
d1f13fd2 | 53 | while (index + 3 < total) { |
79e53945 JB |
54 | current_id = *(base + index); |
55 | index++; | |
d1f13fd2 | 56 | |
e8ef3b4c | 57 | current_size = *((const u16 *)(base + index)); |
79e53945 | 58 | index += 2; |
d1f13fd2 CW |
59 | |
60 | if (index + current_size > total) | |
61 | return NULL; | |
62 | ||
79e53945 JB |
63 | if (current_id == section_id) |
64 | return base + index; | |
d1f13fd2 | 65 | |
79e53945 JB |
66 | index += current_size; |
67 | } | |
68 | ||
69 | return NULL; | |
70 | } | |
71 | ||
db545019 | 72 | static u16 |
e8ef3b4c | 73 | get_blocksize(const void *p) |
db545019 DMEA |
74 | { |
75 | u16 *block_ptr, block_size; | |
76 | ||
77 | block_ptr = (u16 *)((char *)p - 2); | |
78 | block_size = *block_ptr; | |
79 | return block_size; | |
80 | } | |
81 | ||
79e53945 | 82 | static void |
88631706 | 83 | fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
99834ea4 | 84 | const struct lvds_dvo_timing *dvo_timing) |
88631706 ML |
85 | { |
86 | panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | | |
87 | dvo_timing->hactive_lo; | |
88 | panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + | |
89 | ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); | |
90 | panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + | |
91 | dvo_timing->hsync_pulse_width; | |
92 | panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + | |
93 | ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); | |
94 | ||
95 | panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | | |
96 | dvo_timing->vactive_lo; | |
97 | panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + | |
98 | dvo_timing->vsync_off; | |
99 | panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + | |
100 | dvo_timing->vsync_pulse_width; | |
101 | panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + | |
102 | ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); | |
103 | panel_fixed_mode->clock = dvo_timing->clock * 10; | |
104 | panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; | |
105 | ||
9bc35499 AJ |
106 | if (dvo_timing->hsync_positive) |
107 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; | |
108 | else | |
109 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; | |
110 | ||
111 | if (dvo_timing->vsync_positive) | |
112 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; | |
113 | else | |
114 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; | |
115 | ||
88631706 ML |
116 | /* Some VBTs have bogus h/vtotal values */ |
117 | if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) | |
118 | panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; | |
119 | if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) | |
120 | panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; | |
121 | ||
122 | drm_mode_set_name(panel_fixed_mode); | |
123 | } | |
124 | ||
99834ea4 CW |
125 | static bool |
126 | lvds_dvo_timing_equal_size(const struct lvds_dvo_timing *a, | |
127 | const struct lvds_dvo_timing *b) | |
128 | { | |
129 | if (a->hactive_hi != b->hactive_hi || | |
130 | a->hactive_lo != b->hactive_lo) | |
131 | return false; | |
132 | ||
133 | if (a->hsync_off_hi != b->hsync_off_hi || | |
134 | a->hsync_off_lo != b->hsync_off_lo) | |
135 | return false; | |
136 | ||
137 | if (a->hsync_pulse_width != b->hsync_pulse_width) | |
138 | return false; | |
139 | ||
140 | if (a->hblank_hi != b->hblank_hi || | |
141 | a->hblank_lo != b->hblank_lo) | |
142 | return false; | |
143 | ||
144 | if (a->vactive_hi != b->vactive_hi || | |
145 | a->vactive_lo != b->vactive_lo) | |
146 | return false; | |
147 | ||
148 | if (a->vsync_off != b->vsync_off) | |
149 | return false; | |
150 | ||
151 | if (a->vsync_pulse_width != b->vsync_pulse_width) | |
152 | return false; | |
153 | ||
154 | if (a->vblank_hi != b->vblank_hi || | |
155 | a->vblank_lo != b->vblank_lo) | |
156 | return false; | |
157 | ||
158 | return true; | |
159 | } | |
160 | ||
161 | static const struct lvds_dvo_timing * | |
162 | get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, | |
163 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, | |
164 | int index) | |
165 | { | |
166 | /* | |
167 | * the size of fp_timing varies on the different platform. | |
168 | * So calculate the DVO timing relative offset in LVDS data | |
169 | * entry to get the DVO timing entry | |
170 | */ | |
171 | ||
172 | int lfp_data_size = | |
173 | lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - | |
174 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; | |
175 | int dvo_timing_offset = | |
176 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - | |
177 | lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; | |
178 | char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; | |
179 | ||
180 | return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); | |
181 | } | |
182 | ||
b0354385 TI |
183 | /* get lvds_fp_timing entry |
184 | * this function may return NULL if the corresponding entry is invalid | |
185 | */ | |
186 | static const struct lvds_fp_timing * | |
187 | get_lvds_fp_timing(const struct bdb_header *bdb, | |
188 | const struct bdb_lvds_lfp_data *data, | |
189 | const struct bdb_lvds_lfp_data_ptrs *ptrs, | |
190 | int index) | |
191 | { | |
192 | size_t data_ofs = (const u8 *)data - (const u8 *)bdb; | |
193 | u16 data_size = ((const u16 *)data)[-1]; /* stored in header */ | |
194 | size_t ofs; | |
195 | ||
196 | if (index >= ARRAY_SIZE(ptrs->ptr)) | |
197 | return NULL; | |
198 | ofs = ptrs->ptr[index].fp_timing_offset; | |
199 | if (ofs < data_ofs || | |
200 | ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size) | |
201 | return NULL; | |
202 | return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); | |
203 | } | |
204 | ||
88631706 ML |
205 | /* Try to find integrated panel data */ |
206 | static void | |
207 | parse_lfp_panel_data(struct drm_i915_private *dev_priv, | |
208 | struct bdb_header *bdb) | |
79e53945 | 209 | { |
99834ea4 CW |
210 | const struct bdb_lvds_options *lvds_options; |
211 | const struct bdb_lvds_lfp_data *lvds_lfp_data; | |
212 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; | |
213 | const struct lvds_dvo_timing *panel_dvo_timing; | |
b0354385 | 214 | const struct lvds_fp_timing *fp_timing; |
79e53945 | 215 | struct drm_display_mode *panel_fixed_mode; |
83a7280e | 216 | int i, downclock, drrs_mode; |
79e53945 | 217 | |
79e53945 JB |
218 | lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
219 | if (!lvds_options) | |
220 | return; | |
221 | ||
41aa3448 | 222 | dev_priv->vbt.lvds_dither = lvds_options->pixel_dither; |
79e53945 JB |
223 | if (lvds_options->panel_type == 0xff) |
224 | return; | |
6a04002b | 225 | |
500a8cc4 | 226 | panel_type = lvds_options->panel_type; |
79e53945 | 227 | |
83a7280e PB |
228 | drrs_mode = (lvds_options->dps_panel_type_bits |
229 | >> (panel_type * 2)) & MODE_MASK; | |
230 | /* | |
231 | * VBT has static DRRS = 0 and seamless DRRS = 2. | |
232 | * The below piece of code is required to adjust vbt.drrs_type | |
233 | * to match the enum drrs_support_type. | |
234 | */ | |
235 | switch (drrs_mode) { | |
236 | case 0: | |
237 | dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT; | |
238 | DRM_DEBUG_KMS("DRRS supported mode is static\n"); | |
239 | break; | |
240 | case 2: | |
241 | dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT; | |
242 | DRM_DEBUG_KMS("DRRS supported mode is seamless\n"); | |
243 | break; | |
244 | default: | |
245 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; | |
246 | DRM_DEBUG_KMS("DRRS not supported (VBT input)\n"); | |
247 | break; | |
248 | } | |
249 | ||
79e53945 JB |
250 | lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); |
251 | if (!lvds_lfp_data) | |
252 | return; | |
253 | ||
1b16de0b JB |
254 | lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
255 | if (!lvds_lfp_data_ptrs) | |
256 | return; | |
257 | ||
41aa3448 | 258 | dev_priv->vbt.lvds_vbt = 1; |
79e53945 | 259 | |
99834ea4 CW |
260 | panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
261 | lvds_lfp_data_ptrs, | |
262 | lvds_options->panel_type); | |
79e53945 | 263 | |
9a298b2a | 264 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
6edc3242 CW |
265 | if (!panel_fixed_mode) |
266 | return; | |
79e53945 | 267 | |
99834ea4 | 268 | fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
79e53945 | 269 | |
41aa3448 | 270 | dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; |
79e53945 | 271 | |
28c97730 | 272 | DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
88631706 | 273 | drm_mode_debug_printmodeline(panel_fixed_mode); |
37df9673 | 274 | |
d1fcea6a | 275 | /* |
99834ea4 CW |
276 | * Iterate over the LVDS panel timing info to find the lowest clock |
277 | * for the native resolution. | |
d1fcea6a | 278 | */ |
99834ea4 | 279 | downclock = panel_dvo_timing->clock; |
d1fcea6a | 280 | for (i = 0; i < 16; i++) { |
99834ea4 CW |
281 | const struct lvds_dvo_timing *dvo_timing; |
282 | ||
283 | dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, | |
284 | lvds_lfp_data_ptrs, | |
285 | i); | |
286 | if (lvds_dvo_timing_equal_size(dvo_timing, panel_dvo_timing) && | |
287 | dvo_timing->clock < downclock) | |
288 | downclock = dvo_timing->clock; | |
d1fcea6a | 289 | } |
99834ea4 | 290 | |
d330a953 | 291 | if (downclock < panel_dvo_timing->clock && i915.lvds_downclock) { |
d1fcea6a | 292 | dev_priv->lvds_downclock_avail = 1; |
99834ea4 | 293 | dev_priv->lvds_downclock = downclock * 10; |
bbb0aef5 JP |
294 | DRM_DEBUG_KMS("LVDS downclock is found in VBT. " |
295 | "Normal Clock %dKHz, downclock %dKHz\n", | |
99834ea4 | 296 | panel_fixed_mode->clock, 10*downclock); |
d1fcea6a | 297 | } |
b0354385 TI |
298 | |
299 | fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, | |
300 | lvds_lfp_data_ptrs, | |
301 | lvds_options->panel_type); | |
302 | if (fp_timing) { | |
303 | /* check the resolution, just to be sure */ | |
304 | if (fp_timing->x_res == panel_fixed_mode->hdisplay && | |
305 | fp_timing->y_res == panel_fixed_mode->vdisplay) { | |
41aa3448 | 306 | dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val; |
b0354385 | 307 | DRM_DEBUG_KMS("VBT initial LVDS value %x\n", |
41aa3448 | 308 | dev_priv->vbt.bios_lvds_val); |
b0354385 TI |
309 | } |
310 | } | |
88631706 ML |
311 | } |
312 | ||
f00076d2 JN |
313 | static void |
314 | parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) | |
315 | { | |
316 | const struct bdb_lfp_backlight_data *backlight_data; | |
317 | const struct bdb_lfp_backlight_data_entry *entry; | |
318 | ||
319 | backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); | |
320 | if (!backlight_data) | |
321 | return; | |
322 | ||
323 | if (backlight_data->entry_size != sizeof(backlight_data->data[0])) { | |
324 | DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n", | |
325 | backlight_data->entry_size); | |
326 | return; | |
327 | } | |
328 | ||
329 | entry = &backlight_data->data[panel_type]; | |
330 | ||
39fbc9c8 JN |
331 | dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM; |
332 | if (!dev_priv->vbt.backlight.present) { | |
333 | DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n", | |
334 | entry->type); | |
335 | return; | |
336 | } | |
337 | ||
f00076d2 JN |
338 | dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; |
339 | dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; | |
1de6068e | 340 | dev_priv->vbt.backlight.min_brightness = entry->min_brightness; |
f00076d2 JN |
341 | DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " |
342 | "active %s, min brightness %u, level %u\n", | |
343 | dev_priv->vbt.backlight.pwm_freq_hz, | |
344 | dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", | |
1de6068e | 345 | dev_priv->vbt.backlight.min_brightness, |
f00076d2 JN |
346 | backlight_data->level[panel_type]); |
347 | } | |
348 | ||
88631706 ML |
349 | /* Try to find sdvo panel data */ |
350 | static void | |
351 | parse_sdvo_panel_data(struct drm_i915_private *dev_priv, | |
352 | struct bdb_header *bdb) | |
353 | { | |
e8ef3b4c | 354 | const struct lvds_dvo_timing *dvo_timing; |
88631706 | 355 | struct drm_display_mode *panel_fixed_mode; |
5a1e5b6c | 356 | int index; |
79e53945 | 357 | |
d330a953 | 358 | index = i915.vbt_sdvo_panel_type; |
c10e408a MF |
359 | if (index == -2) { |
360 | DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); | |
361 | return; | |
362 | } | |
363 | ||
5a1e5b6c | 364 | if (index == -1) { |
e8ef3b4c | 365 | const struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
5a1e5b6c CW |
366 | |
367 | sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); | |
368 | if (!sdvo_lvds_options) | |
369 | return; | |
370 | ||
371 | index = sdvo_lvds_options->panel_type; | |
372 | } | |
88631706 ML |
373 | |
374 | dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); | |
375 | if (!dvo_timing) | |
376 | return; | |
377 | ||
9a298b2a | 378 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
88631706 ML |
379 | if (!panel_fixed_mode) |
380 | return; | |
381 | ||
5a1e5b6c | 382 | fill_detail_timing_data(panel_fixed_mode, dvo_timing + index); |
88631706 | 383 | |
41aa3448 | 384 | dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode; |
79e53945 | 385 | |
5a1e5b6c CW |
386 | DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n"); |
387 | drm_mode_debug_printmodeline(panel_fixed_mode); | |
79e53945 JB |
388 | } |
389 | ||
9a4114ff BF |
390 | static int intel_bios_ssc_frequency(struct drm_device *dev, |
391 | bool alternate) | |
392 | { | |
393 | switch (INTEL_INFO(dev)->gen) { | |
394 | case 2: | |
e91e941b | 395 | return alternate ? 66667 : 48000; |
9a4114ff BF |
396 | case 3: |
397 | case 4: | |
e91e941b | 398 | return alternate ? 100000 : 96000; |
9a4114ff | 399 | default: |
e91e941b | 400 | return alternate ? 100000 : 120000; |
9a4114ff BF |
401 | } |
402 | } | |
403 | ||
79e53945 JB |
404 | static void |
405 | parse_general_features(struct drm_i915_private *dev_priv, | |
406 | struct bdb_header *bdb) | |
407 | { | |
bad720ff | 408 | struct drm_device *dev = dev_priv->dev; |
e8ef3b4c | 409 | const struct bdb_general_features *general; |
79e53945 | 410 | |
79e53945 JB |
411 | general = find_section(bdb, BDB_GENERAL_FEATURES); |
412 | if (general) { | |
41aa3448 RV |
413 | dev_priv->vbt.int_tv_support = general->int_tv_support; |
414 | dev_priv->vbt.int_crt_support = general->int_crt_support; | |
415 | dev_priv->vbt.lvds_use_ssc = general->enable_ssc; | |
416 | dev_priv->vbt.lvds_ssc_freq = | |
9a4114ff | 417 | intel_bios_ssc_frequency(dev, general->ssc_freq); |
41aa3448 RV |
418 | dev_priv->vbt.display_clock_mode = general->display_clock_mode; |
419 | dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted; | |
3f704fa2 | 420 | DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n", |
41aa3448 RV |
421 | dev_priv->vbt.int_tv_support, |
422 | dev_priv->vbt.int_crt_support, | |
423 | dev_priv->vbt.lvds_use_ssc, | |
424 | dev_priv->vbt.lvds_ssc_freq, | |
425 | dev_priv->vbt.display_clock_mode, | |
426 | dev_priv->vbt.fdi_rx_polarity_inverted); | |
79e53945 JB |
427 | } |
428 | } | |
429 | ||
db545019 DMEA |
430 | static void |
431 | parse_general_definitions(struct drm_i915_private *dev_priv, | |
432 | struct bdb_header *bdb) | |
433 | { | |
e8ef3b4c | 434 | const struct bdb_general_definitions *general; |
db545019 | 435 | |
db545019 DMEA |
436 | general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
437 | if (general) { | |
438 | u16 block_size = get_blocksize(general); | |
439 | if (block_size >= sizeof(*general)) { | |
440 | int bus_pin = general->crt_ddc_gmbus_pin; | |
28c97730 | 441 | DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
88ac7939 | 442 | if (intel_gmbus_is_valid_pin(dev_priv, bus_pin)) |
41aa3448 | 443 | dev_priv->vbt.crt_ddc_pin = bus_pin; |
db545019 | 444 | } else { |
28c97730 | 445 | DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
3bd7d909 | 446 | block_size); |
db545019 DMEA |
447 | } |
448 | } | |
449 | } | |
450 | ||
e8ef3b4c JN |
451 | static const union child_device_config * |
452 | child_device_ptr(const struct bdb_general_definitions *p_defs, int i) | |
90e4f159 | 453 | { |
e8ef3b4c | 454 | return (const void *) &p_defs->devices[i * p_defs->child_dev_size]; |
90e4f159 VS |
455 | } |
456 | ||
9b9d172d | 457 | static void |
458 | parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, | |
44834a67 | 459 | struct bdb_header *bdb) |
9b9d172d | 460 | { |
461 | struct sdvo_device_mapping *p_mapping; | |
e8ef3b4c JN |
462 | const struct bdb_general_definitions *p_defs; |
463 | const union child_device_config *p_child; | |
9b9d172d | 464 | int i, child_device_num, count; |
db545019 | 465 | u16 block_size; |
9b9d172d | 466 | |
467 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); | |
468 | if (!p_defs) { | |
44834a67 | 469 | DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
9b9d172d | 470 | return; |
471 | } | |
472 | /* judge whether the size of child device meets the requirements. | |
473 | * If the child device size obtained from general definition block | |
474 | * is different with sizeof(struct child_device_config), skip the | |
475 | * parsing of sdvo device info | |
476 | */ | |
477 | if (p_defs->child_dev_size != sizeof(*p_child)) { | |
478 | /* different child dev size . Ignore it */ | |
28c97730 | 479 | DRM_DEBUG_KMS("different child size is found. Invalid.\n"); |
9b9d172d | 480 | return; |
481 | } | |
482 | /* get the block size of general definitions */ | |
db545019 | 483 | block_size = get_blocksize(p_defs); |
9b9d172d | 484 | /* get the number of child device */ |
485 | child_device_num = (block_size - sizeof(*p_defs)) / | |
90e4f159 | 486 | p_defs->child_dev_size; |
9b9d172d | 487 | count = 0; |
488 | for (i = 0; i < child_device_num; i++) { | |
90e4f159 | 489 | p_child = child_device_ptr(p_defs, i); |
768f69c9 | 490 | if (!p_child->old.device_type) { |
9b9d172d | 491 | /* skip the device block if device type is invalid */ |
492 | continue; | |
493 | } | |
768f69c9 PZ |
494 | if (p_child->old.slave_addr != SLAVE_ADDR1 && |
495 | p_child->old.slave_addr != SLAVE_ADDR2) { | |
9b9d172d | 496 | /* |
497 | * If the slave address is neither 0x70 nor 0x72, | |
498 | * it is not a SDVO device. Skip it. | |
499 | */ | |
500 | continue; | |
501 | } | |
768f69c9 PZ |
502 | if (p_child->old.dvo_port != DEVICE_PORT_DVOB && |
503 | p_child->old.dvo_port != DEVICE_PORT_DVOC) { | |
9b9d172d | 504 | /* skip the incorrect SDVO port */ |
0206e353 | 505 | DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
9b9d172d | 506 | continue; |
507 | } | |
28c97730 ZY |
508 | DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
509 | " %s port\n", | |
768f69c9 PZ |
510 | p_child->old.slave_addr, |
511 | (p_child->old.dvo_port == DEVICE_PORT_DVOB) ? | |
9b9d172d | 512 | "SDVOB" : "SDVOC"); |
768f69c9 | 513 | p_mapping = &(dev_priv->sdvo_mappings[p_child->old.dvo_port - 1]); |
9b9d172d | 514 | if (!p_mapping->initialized) { |
768f69c9 PZ |
515 | p_mapping->dvo_port = p_child->old.dvo_port; |
516 | p_mapping->slave_addr = p_child->old.slave_addr; | |
517 | p_mapping->dvo_wiring = p_child->old.dvo_wiring; | |
518 | p_mapping->ddc_pin = p_child->old.ddc_pin; | |
519 | p_mapping->i2c_pin = p_child->old.i2c_pin; | |
9b9d172d | 520 | p_mapping->initialized = 1; |
46eb3036 | 521 | DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
e957d772 CW |
522 | p_mapping->dvo_port, |
523 | p_mapping->slave_addr, | |
524 | p_mapping->dvo_wiring, | |
525 | p_mapping->ddc_pin, | |
46eb3036 | 526 | p_mapping->i2c_pin); |
9b9d172d | 527 | } else { |
28c97730 | 528 | DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
9b9d172d | 529 | "two SDVO device.\n"); |
530 | } | |
768f69c9 | 531 | if (p_child->old.slave2_addr) { |
9b9d172d | 532 | /* Maybe this is a SDVO device with multiple inputs */ |
533 | /* And the mapping info is not added */ | |
28c97730 ZY |
534 | DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
535 | " is a SDVO device with multiple inputs.\n"); | |
9b9d172d | 536 | } |
537 | count++; | |
538 | } | |
539 | ||
540 | if (!count) { | |
541 | /* No SDVO device info is found */ | |
28c97730 | 542 | DRM_DEBUG_KMS("No SDVO device info is found in VBT\n"); |
9b9d172d | 543 | } |
544 | return; | |
545 | } | |
32f9d658 ZW |
546 | |
547 | static void | |
548 | parse_driver_features(struct drm_i915_private *dev_priv, | |
549 | struct bdb_header *bdb) | |
550 | { | |
e8ef3b4c | 551 | const struct bdb_driver_features *driver; |
32f9d658 | 552 | |
32f9d658 | 553 | driver = find_section(bdb, BDB_DRIVER_FEATURES); |
652c393a JB |
554 | if (!driver) |
555 | return; | |
556 | ||
6fca55b1 | 557 | if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
41aa3448 | 558 | dev_priv->vbt.edp_support = 1; |
652c393a | 559 | |
5ceb0f9b | 560 | if (driver->dual_frequency) |
652c393a | 561 | dev_priv->render_reclock_avail = true; |
83a7280e PB |
562 | |
563 | DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); | |
564 | /* | |
565 | * If DRRS is not supported, drrs_type has to be set to 0. | |
566 | * This is because, VBT is configured in such a way that | |
567 | * static DRRS is 0 and DRRS not supported is represented by | |
568 | * driver->drrs_enabled=false | |
569 | */ | |
570 | if (!driver->drrs_enabled) | |
571 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; | |
32f9d658 ZW |
572 | } |
573 | ||
500a8cc4 ZW |
574 | static void |
575 | parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) | |
576 | { | |
e8ef3b4c JN |
577 | const struct bdb_edp *edp; |
578 | const struct edp_power_seq *edp_pps; | |
579 | const struct edp_link_params *edp_link_params; | |
500a8cc4 ZW |
580 | |
581 | edp = find_section(bdb, BDB_EDP); | |
582 | if (!edp) { | |
6fca55b1 | 583 | if (dev_priv->vbt.edp_support) |
9a30a61f | 584 | DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n"); |
500a8cc4 ZW |
585 | return; |
586 | } | |
587 | ||
588 | switch ((edp->color_depth >> (panel_type * 2)) & 3) { | |
589 | case EDP_18BPP: | |
41aa3448 | 590 | dev_priv->vbt.edp_bpp = 18; |
500a8cc4 ZW |
591 | break; |
592 | case EDP_24BPP: | |
41aa3448 | 593 | dev_priv->vbt.edp_bpp = 24; |
500a8cc4 ZW |
594 | break; |
595 | case EDP_30BPP: | |
41aa3448 | 596 | dev_priv->vbt.edp_bpp = 30; |
500a8cc4 ZW |
597 | break; |
598 | } | |
5ceb0f9b | 599 | |
9f0e7ff4 JB |
600 | /* Get the eDP sequencing and link info */ |
601 | edp_pps = &edp->power_seqs[panel_type]; | |
602 | edp_link_params = &edp->link_params[panel_type]; | |
5ceb0f9b | 603 | |
41aa3448 | 604 | dev_priv->vbt.edp_pps = *edp_pps; |
5ceb0f9b | 605 | |
e13e2b2c JN |
606 | switch (edp_link_params->rate) { |
607 | case EDP_RATE_1_62: | |
608 | dev_priv->vbt.edp_rate = DP_LINK_BW_1_62; | |
609 | break; | |
610 | case EDP_RATE_2_7: | |
611 | dev_priv->vbt.edp_rate = DP_LINK_BW_2_7; | |
612 | break; | |
613 | default: | |
614 | DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n", | |
615 | edp_link_params->rate); | |
616 | break; | |
617 | } | |
618 | ||
9f0e7ff4 | 619 | switch (edp_link_params->lanes) { |
e13e2b2c | 620 | case EDP_LANE_1: |
41aa3448 | 621 | dev_priv->vbt.edp_lanes = 1; |
9f0e7ff4 | 622 | break; |
e13e2b2c | 623 | case EDP_LANE_2: |
41aa3448 | 624 | dev_priv->vbt.edp_lanes = 2; |
9f0e7ff4 | 625 | break; |
e13e2b2c | 626 | case EDP_LANE_4: |
41aa3448 | 627 | dev_priv->vbt.edp_lanes = 4; |
9f0e7ff4 | 628 | break; |
e13e2b2c JN |
629 | default: |
630 | DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n", | |
631 | edp_link_params->lanes); | |
632 | break; | |
9f0e7ff4 | 633 | } |
e13e2b2c | 634 | |
9f0e7ff4 | 635 | switch (edp_link_params->preemphasis) { |
e13e2b2c | 636 | case EDP_PREEMPHASIS_NONE: |
bd60018a | 637 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; |
9f0e7ff4 | 638 | break; |
e13e2b2c | 639 | case EDP_PREEMPHASIS_3_5dB: |
bd60018a | 640 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; |
9f0e7ff4 | 641 | break; |
e13e2b2c | 642 | case EDP_PREEMPHASIS_6dB: |
bd60018a | 643 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; |
9f0e7ff4 | 644 | break; |
e13e2b2c | 645 | case EDP_PREEMPHASIS_9_5dB: |
bd60018a | 646 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; |
9f0e7ff4 | 647 | break; |
e13e2b2c JN |
648 | default: |
649 | DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n", | |
650 | edp_link_params->preemphasis); | |
651 | break; | |
9f0e7ff4 | 652 | } |
e13e2b2c | 653 | |
9f0e7ff4 | 654 | switch (edp_link_params->vswing) { |
e13e2b2c | 655 | case EDP_VSWING_0_4V: |
bd60018a | 656 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; |
9f0e7ff4 | 657 | break; |
e13e2b2c | 658 | case EDP_VSWING_0_6V: |
bd60018a | 659 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; |
9f0e7ff4 | 660 | break; |
e13e2b2c | 661 | case EDP_VSWING_0_8V: |
bd60018a | 662 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
9f0e7ff4 | 663 | break; |
e13e2b2c | 664 | case EDP_VSWING_1_2V: |
bd60018a | 665 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
9f0e7ff4 | 666 | break; |
e13e2b2c JN |
667 | default: |
668 | DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n", | |
669 | edp_link_params->vswing); | |
670 | break; | |
9f0e7ff4 | 671 | } |
9a57f5bb SJ |
672 | |
673 | if (bdb->version >= 173) { | |
674 | uint8_t vswing; | |
675 | ||
9e458034 SJ |
676 | /* Don't read from VBT if module parameter has valid value*/ |
677 | if (i915.edp_vswing) { | |
678 | dev_priv->edp_low_vswing = i915.edp_vswing == 1; | |
679 | } else { | |
680 | vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; | |
681 | dev_priv->edp_low_vswing = vswing == 0; | |
682 | } | |
9a57f5bb | 683 | } |
500a8cc4 ZW |
684 | } |
685 | ||
bfd7ebda RV |
686 | static void |
687 | parse_psr(struct drm_i915_private *dev_priv, struct bdb_header *bdb) | |
688 | { | |
e8ef3b4c JN |
689 | const struct bdb_psr *psr; |
690 | const struct psr_table *psr_table; | |
bfd7ebda RV |
691 | |
692 | psr = find_section(bdb, BDB_PSR); | |
693 | if (!psr) { | |
694 | DRM_DEBUG_KMS("No PSR BDB found.\n"); | |
695 | return; | |
696 | } | |
697 | ||
698 | psr_table = &psr->psr_table[panel_type]; | |
699 | ||
700 | dev_priv->vbt.psr.full_link = psr_table->full_link; | |
701 | dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup; | |
702 | ||
703 | /* Allowed VBT values goes from 0 to 15 */ | |
704 | dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 : | |
705 | psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames; | |
706 | ||
707 | switch (psr_table->lines_to_wait) { | |
708 | case 0: | |
709 | dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT; | |
710 | break; | |
711 | case 1: | |
712 | dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT; | |
713 | break; | |
714 | case 2: | |
715 | dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT; | |
716 | break; | |
717 | case 3: | |
718 | dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT; | |
719 | break; | |
720 | default: | |
721 | DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n", | |
722 | psr_table->lines_to_wait); | |
723 | break; | |
724 | } | |
725 | ||
726 | dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time; | |
727 | dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time; | |
728 | } | |
729 | ||
d3b542fc SK |
730 | static u8 *goto_next_sequence(u8 *data, int *size) |
731 | { | |
732 | u16 len; | |
733 | int tmp = *size; | |
734 | ||
735 | if (--tmp < 0) | |
736 | return NULL; | |
737 | ||
738 | /* goto first element */ | |
739 | data++; | |
740 | while (1) { | |
741 | switch (*data) { | |
742 | case MIPI_SEQ_ELEM_SEND_PKT: | |
743 | /* | |
744 | * skip by this element payload size | |
745 | * skip elem id, command flag and data type | |
746 | */ | |
b0256cdc SK |
747 | tmp -= 5; |
748 | if (tmp < 0) | |
d3b542fc SK |
749 | return NULL; |
750 | ||
751 | data += 3; | |
752 | len = *((u16 *)data); | |
753 | ||
b0256cdc SK |
754 | tmp -= len; |
755 | if (tmp < 0) | |
d3b542fc SK |
756 | return NULL; |
757 | ||
758 | /* skip by len */ | |
759 | data = data + 2 + len; | |
760 | break; | |
761 | case MIPI_SEQ_ELEM_DELAY: | |
762 | /* skip by elem id, and delay is 4 bytes */ | |
b0256cdc SK |
763 | tmp -= 5; |
764 | if (tmp < 0) | |
d3b542fc SK |
765 | return NULL; |
766 | ||
767 | data += 5; | |
768 | break; | |
769 | case MIPI_SEQ_ELEM_GPIO: | |
b0256cdc SK |
770 | tmp -= 3; |
771 | if (tmp < 0) | |
d3b542fc SK |
772 | return NULL; |
773 | ||
774 | data += 3; | |
775 | break; | |
776 | default: | |
777 | DRM_ERROR("Unknown element\n"); | |
778 | return NULL; | |
779 | } | |
780 | ||
781 | /* end of sequence ? */ | |
782 | if (*data == 0) | |
783 | break; | |
784 | } | |
785 | ||
786 | /* goto next sequence or end of block byte */ | |
787 | if (--tmp < 0) | |
788 | return NULL; | |
789 | ||
790 | data++; | |
791 | ||
792 | /* update amount of data left for the sequence block to be parsed */ | |
793 | *size = tmp; | |
794 | return data; | |
795 | } | |
796 | ||
d17c5443 SK |
797 | static void |
798 | parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb) | |
799 | { | |
e8ef3b4c JN |
800 | const struct bdb_mipi_config *start; |
801 | const struct bdb_mipi_sequence *sequence; | |
802 | const struct mipi_config *config; | |
803 | const struct mipi_pps_data *pps; | |
804 | u8 *data; | |
805 | const u8 *seq_data; | |
d3b542fc SK |
806 | int i, panel_id, seq_size; |
807 | u16 block_size; | |
808 | ||
3e6bd011 SK |
809 | /* parse MIPI blocks only if LFP type is MIPI */ |
810 | if (!dev_priv->vbt.has_mipi) | |
811 | return; | |
812 | ||
d3b542fc SK |
813 | /* Initialize this to undefined indicating no generic MIPI support */ |
814 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID; | |
815 | ||
816 | /* Block #40 is already parsed and panel_fixed_mode is | |
817 | * stored in dev_priv->lfp_lvds_vbt_mode | |
818 | * resuse this when needed | |
819 | */ | |
d17c5443 | 820 | |
d3b542fc SK |
821 | /* Parse #52 for panel index used from panel_type already |
822 | * parsed | |
823 | */ | |
824 | start = find_section(bdb, BDB_MIPI_CONFIG); | |
825 | if (!start) { | |
826 | DRM_DEBUG_KMS("No MIPI config BDB found"); | |
d17c5443 SK |
827 | return; |
828 | } | |
829 | ||
d3b542fc SK |
830 | DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n", |
831 | panel_type); | |
832 | ||
833 | /* | |
834 | * get hold of the correct configuration block and pps data as per | |
835 | * the panel_type as index | |
836 | */ | |
837 | config = &start->config[panel_type]; | |
838 | pps = &start->pps[panel_type]; | |
839 | ||
840 | /* store as of now full data. Trim when we realise all is not needed */ | |
841 | dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL); | |
842 | if (!dev_priv->vbt.dsi.config) | |
843 | return; | |
844 | ||
845 | dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL); | |
846 | if (!dev_priv->vbt.dsi.pps) { | |
847 | kfree(dev_priv->vbt.dsi.config); | |
848 | return; | |
849 | } | |
850 | ||
851 | /* We have mandatory mipi config blocks. Initialize as generic panel */ | |
ea9a6baf | 852 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID; |
d3b542fc SK |
853 | |
854 | /* Check if we have sequence block as well */ | |
855 | sequence = find_section(bdb, BDB_MIPI_SEQUENCE); | |
856 | if (!sequence) { | |
857 | DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n"); | |
858 | return; | |
859 | } | |
860 | ||
861 | DRM_DEBUG_DRIVER("Found MIPI sequence block\n"); | |
862 | ||
863 | block_size = get_blocksize(sequence); | |
864 | ||
865 | /* | |
866 | * parse the sequence block for individual sequences | |
867 | */ | |
868 | dev_priv->vbt.dsi.seq_version = sequence->version; | |
869 | ||
870 | seq_data = &sequence->data[0]; | |
871 | ||
872 | /* | |
873 | * sequence block is variable length and hence we need to parse and | |
874 | * get the sequence data for specific panel id | |
875 | */ | |
876 | for (i = 0; i < MAX_MIPI_CONFIGURATIONS; i++) { | |
877 | panel_id = *seq_data; | |
878 | seq_size = *((u16 *) (seq_data + 1)); | |
879 | if (panel_id == panel_type) | |
880 | break; | |
881 | ||
882 | /* skip the sequence including seq header of 3 bytes */ | |
883 | seq_data = seq_data + 3 + seq_size; | |
884 | if ((seq_data - &sequence->data[0]) > block_size) { | |
885 | DRM_ERROR("Sequence start is beyond sequence block size, corrupted sequence block\n"); | |
886 | return; | |
887 | } | |
888 | } | |
889 | ||
890 | if (i == MAX_MIPI_CONFIGURATIONS) { | |
891 | DRM_ERROR("Sequence block detected but no valid configuration\n"); | |
892 | return; | |
893 | } | |
894 | ||
895 | /* check if found sequence is completely within the sequence block | |
896 | * just being paranoid */ | |
897 | if (seq_size > block_size) { | |
898 | DRM_ERROR("Corrupted sequence/size, bailing out\n"); | |
899 | return; | |
900 | } | |
901 | ||
902 | /* skip the panel id(1 byte) and seq size(2 bytes) */ | |
903 | dev_priv->vbt.dsi.data = kmemdup(seq_data + 3, seq_size, GFP_KERNEL); | |
904 | if (!dev_priv->vbt.dsi.data) | |
905 | return; | |
906 | ||
907 | /* | |
908 | * loop into the sequence data and split into multiple sequneces | |
909 | * There are only 5 types of sequences as of now | |
910 | */ | |
911 | data = dev_priv->vbt.dsi.data; | |
912 | dev_priv->vbt.dsi.size = seq_size; | |
913 | ||
914 | /* two consecutive 0x00 indicate end of all sequences */ | |
915 | while (1) { | |
916 | int seq_id = *data; | |
917 | if (MIPI_SEQ_MAX > seq_id && seq_id > MIPI_SEQ_UNDEFINED) { | |
918 | dev_priv->vbt.dsi.sequence[seq_id] = data; | |
919 | DRM_DEBUG_DRIVER("Found mipi sequence - %d\n", seq_id); | |
920 | } else { | |
921 | DRM_ERROR("undefined sequence\n"); | |
922 | goto err; | |
923 | } | |
924 | ||
925 | /* partial parsing to skip elements */ | |
926 | data = goto_next_sequence(data, &seq_size); | |
927 | ||
928 | if (data == NULL) { | |
929 | DRM_ERROR("Sequence elements going beyond block itself. Sequence block parsing failed\n"); | |
930 | goto err; | |
931 | } | |
932 | ||
933 | if (*data == 0) | |
934 | break; /* end of sequence reached */ | |
935 | } | |
936 | ||
937 | DRM_DEBUG_DRIVER("MIPI related vbt parsing complete\n"); | |
938 | return; | |
939 | err: | |
940 | kfree(dev_priv->vbt.dsi.data); | |
941 | dev_priv->vbt.dsi.data = NULL; | |
942 | ||
943 | /* error during parsing so set all pointers to null | |
944 | * because of partial parsing */ | |
ed3b6679 | 945 | memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); |
d17c5443 SK |
946 | } |
947 | ||
6acab15a PZ |
948 | static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, |
949 | struct bdb_header *bdb) | |
950 | { | |
951 | union child_device_config *it, *child = NULL; | |
952 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; | |
953 | uint8_t hdmi_level_shift; | |
954 | int i, j; | |
554d6af5 | 955 | bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; |
6bf19e7c | 956 | uint8_t aux_channel; |
6acab15a PZ |
957 | /* Each DDI port can have more than one value on the "DVO Port" field, |
958 | * so look for all the possible values for each port and abort if more | |
959 | * than one is found. */ | |
960 | int dvo_ports[][2] = { | |
961 | {DVO_PORT_HDMIA, DVO_PORT_DPA}, | |
962 | {DVO_PORT_HDMIB, DVO_PORT_DPB}, | |
963 | {DVO_PORT_HDMIC, DVO_PORT_DPC}, | |
964 | {DVO_PORT_HDMID, DVO_PORT_DPD}, | |
965 | {DVO_PORT_CRT, -1 /* Port E can only be DVO_PORT_CRT */ }, | |
966 | }; | |
967 | ||
968 | /* Find the child device to use, abort if more than one found. */ | |
969 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { | |
970 | it = dev_priv->vbt.child_dev + i; | |
971 | ||
972 | for (j = 0; j < 2; j++) { | |
973 | if (dvo_ports[port][j] == -1) | |
974 | break; | |
975 | ||
976 | if (it->common.dvo_port == dvo_ports[port][j]) { | |
977 | if (child) { | |
978 | DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n", | |
979 | port_name(port)); | |
980 | return; | |
981 | } | |
982 | child = it; | |
983 | } | |
984 | } | |
985 | } | |
986 | if (!child) | |
987 | return; | |
988 | ||
6bf19e7c PZ |
989 | aux_channel = child->raw[25]; |
990 | ||
78eb06c3 VS |
991 | is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; |
992 | is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; | |
993 | is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT; | |
994 | is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0; | |
995 | is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR); | |
554d6af5 | 996 | |
311a2094 PZ |
997 | info->supports_dvi = is_dvi; |
998 | info->supports_hdmi = is_hdmi; | |
999 | info->supports_dp = is_dp; | |
1000 | ||
554d6af5 PZ |
1001 | DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n", |
1002 | port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt); | |
1003 | ||
1004 | if (is_edp && is_dvi) | |
1005 | DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n", | |
1006 | port_name(port)); | |
1007 | if (is_crt && port != PORT_E) | |
1008 | DRM_DEBUG_KMS("Port %c is analog\n", port_name(port)); | |
1009 | if (is_crt && (is_dvi || is_dp)) | |
1010 | DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n", | |
1011 | port_name(port)); | |
1012 | if (is_dvi && (port == PORT_A || port == PORT_E)) | |
9b13494c | 1013 | DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port)); |
554d6af5 PZ |
1014 | if (!is_dvi && !is_dp && !is_crt) |
1015 | DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n", | |
1016 | port_name(port)); | |
1017 | if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E)) | |
1018 | DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); | |
6bf19e7c PZ |
1019 | |
1020 | if (is_dvi) { | |
1021 | if (child->common.ddc_pin == 0x05 && port != PORT_B) | |
1022 | DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); | |
1023 | if (child->common.ddc_pin == 0x04 && port != PORT_C) | |
1024 | DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); | |
1025 | if (child->common.ddc_pin == 0x06 && port != PORT_D) | |
1026 | DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); | |
1027 | } | |
1028 | ||
1029 | if (is_dp) { | |
1030 | if (aux_channel == 0x40 && port != PORT_A) | |
1031 | DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); | |
1032 | if (aux_channel == 0x10 && port != PORT_B) | |
1033 | DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); | |
1034 | if (aux_channel == 0x20 && port != PORT_C) | |
1035 | DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); | |
1036 | if (aux_channel == 0x30 && port != PORT_D) | |
1037 | DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); | |
1038 | } | |
1039 | ||
6acab15a PZ |
1040 | if (bdb->version >= 158) { |
1041 | /* The VBT HDMI level shift values match the table we have. */ | |
1042 | hdmi_level_shift = child->raw[7] & 0xF; | |
ce4dd49e DL |
1043 | DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n", |
1044 | port_name(port), | |
1045 | hdmi_level_shift); | |
1046 | info->hdmi_level_shift = hdmi_level_shift; | |
6acab15a PZ |
1047 | } |
1048 | } | |
1049 | ||
1050 | static void parse_ddi_ports(struct drm_i915_private *dev_priv, | |
1051 | struct bdb_header *bdb) | |
1052 | { | |
1053 | struct drm_device *dev = dev_priv->dev; | |
1054 | enum port port; | |
1055 | ||
1056 | if (!HAS_DDI(dev)) | |
1057 | return; | |
1058 | ||
1059 | if (!dev_priv->vbt.child_dev_num) | |
1060 | return; | |
1061 | ||
1062 | if (bdb->version < 155) | |
1063 | return; | |
1064 | ||
1065 | for (port = PORT_A; port < I915_MAX_PORTS; port++) | |
1066 | parse_ddi_port(dev_priv, port, bdb); | |
1067 | } | |
1068 | ||
6363ee6f ZY |
1069 | static void |
1070 | parse_device_mapping(struct drm_i915_private *dev_priv, | |
1071 | struct bdb_header *bdb) | |
1072 | { | |
e8ef3b4c JN |
1073 | const struct bdb_general_definitions *p_defs; |
1074 | const union child_device_config *p_child; | |
1075 | union child_device_config *child_dev_ptr; | |
6363ee6f ZY |
1076 | int i, child_device_num, count; |
1077 | u16 block_size; | |
1078 | ||
1079 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); | |
1080 | if (!p_defs) { | |
44834a67 | 1081 | DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
6363ee6f ZY |
1082 | return; |
1083 | } | |
90e4f159 VS |
1084 | if (p_defs->child_dev_size < sizeof(*p_child)) { |
1085 | DRM_ERROR("General definiton block child device size is too small.\n"); | |
6363ee6f ZY |
1086 | return; |
1087 | } | |
1088 | /* get the block size of general definitions */ | |
1089 | block_size = get_blocksize(p_defs); | |
1090 | /* get the number of child device */ | |
1091 | child_device_num = (block_size - sizeof(*p_defs)) / | |
90e4f159 | 1092 | p_defs->child_dev_size; |
6363ee6f ZY |
1093 | count = 0; |
1094 | /* get the number of child device that is present */ | |
1095 | for (i = 0; i < child_device_num; i++) { | |
90e4f159 | 1096 | p_child = child_device_ptr(p_defs, i); |
768f69c9 | 1097 | if (!p_child->common.device_type) { |
6363ee6f ZY |
1098 | /* skip the device block if device type is invalid */ |
1099 | continue; | |
1100 | } | |
1101 | count++; | |
1102 | } | |
1103 | if (!count) { | |
0206e353 | 1104 | DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); |
6363ee6f ZY |
1105 | return; |
1106 | } | |
41aa3448 RV |
1107 | dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); |
1108 | if (!dev_priv->vbt.child_dev) { | |
6363ee6f ZY |
1109 | DRM_DEBUG_KMS("No memory space for child device\n"); |
1110 | return; | |
1111 | } | |
1112 | ||
41aa3448 | 1113 | dev_priv->vbt.child_dev_num = count; |
6363ee6f ZY |
1114 | count = 0; |
1115 | for (i = 0; i < child_device_num; i++) { | |
90e4f159 | 1116 | p_child = child_device_ptr(p_defs, i); |
768f69c9 | 1117 | if (!p_child->common.device_type) { |
6363ee6f ZY |
1118 | /* skip the device block if device type is invalid */ |
1119 | continue; | |
1120 | } | |
3e6bd011 SK |
1121 | |
1122 | if (p_child->common.dvo_port >= DVO_PORT_MIPIA | |
1123 | && p_child->common.dvo_port <= DVO_PORT_MIPID | |
1124 | &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) { | |
1125 | DRM_DEBUG_KMS("Found MIPI as LFP\n"); | |
1126 | dev_priv->vbt.has_mipi = 1; | |
1127 | dev_priv->vbt.dsi.port = p_child->common.dvo_port; | |
1128 | } | |
1129 | ||
41aa3448 | 1130 | child_dev_ptr = dev_priv->vbt.child_dev + count; |
6363ee6f | 1131 | count++; |
e8ef3b4c | 1132 | memcpy(child_dev_ptr, p_child, sizeof(*p_child)); |
6363ee6f ZY |
1133 | } |
1134 | return; | |
1135 | } | |
44834a67 | 1136 | |
6a04002b SQ |
1137 | static void |
1138 | init_vbt_defaults(struct drm_i915_private *dev_priv) | |
1139 | { | |
9a4114ff | 1140 | struct drm_device *dev = dev_priv->dev; |
6acab15a | 1141 | enum port port; |
9a4114ff | 1142 | |
988c7015 | 1143 | dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; |
6a04002b | 1144 | |
56c4b63a JN |
1145 | /* Default to having backlight */ |
1146 | dev_priv->vbt.backlight.present = true; | |
1147 | ||
6a04002b | 1148 | /* LFP panel data */ |
41aa3448 RV |
1149 | dev_priv->vbt.lvds_dither = 1; |
1150 | dev_priv->vbt.lvds_vbt = 0; | |
6a04002b SQ |
1151 | |
1152 | /* SDVO panel data */ | |
41aa3448 | 1153 | dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; |
6a04002b SQ |
1154 | |
1155 | /* general features */ | |
41aa3448 RV |
1156 | dev_priv->vbt.int_tv_support = 1; |
1157 | dev_priv->vbt.int_crt_support = 1; | |
9a4114ff BF |
1158 | |
1159 | /* Default to using SSC */ | |
41aa3448 | 1160 | dev_priv->vbt.lvds_use_ssc = 1; |
f69e5156 DL |
1161 | /* |
1162 | * Core/SandyBridge/IvyBridge use alternative (120MHz) reference | |
1163 | * clock for LVDS. | |
1164 | */ | |
1165 | dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev, | |
1166 | !HAS_PCH_SPLIT(dev)); | |
e91e941b | 1167 | DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq); |
6acab15a PZ |
1168 | |
1169 | for (port = PORT_A; port < I915_MAX_PORTS; port++) { | |
311a2094 PZ |
1170 | struct ddi_vbt_port_info *info = |
1171 | &dev_priv->vbt.ddi_port_info[port]; | |
1172 | ||
ce4dd49e | 1173 | info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN; |
311a2094 PZ |
1174 | |
1175 | info->supports_dvi = (port != PORT_A && port != PORT_E); | |
1176 | info->supports_hdmi = info->supports_dvi; | |
1177 | info->supports_dp = (port != PORT_E); | |
6acab15a | 1178 | } |
6a04002b SQ |
1179 | } |
1180 | ||
bbe1c274 | 1181 | static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) |
25e341cf DV |
1182 | { |
1183 | DRM_DEBUG_KMS("Falling back to manually reading VBT from " | |
1184 | "VBIOS ROM for %s\n", | |
1185 | id->ident); | |
1186 | return 1; | |
1187 | } | |
1188 | ||
1189 | static const struct dmi_system_id intel_no_opregion_vbt[] = { | |
1190 | { | |
1191 | .callback = intel_no_opregion_vbt_callback, | |
1192 | .ident = "ThinkCentre A57", | |
1193 | .matches = { | |
1194 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
1195 | DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), | |
1196 | }, | |
1197 | }, | |
1198 | { } | |
1199 | }; | |
1200 | ||
3dd4e846 CW |
1201 | static struct bdb_header *validate_vbt(char *base, size_t size, |
1202 | struct vbt_header *vbt, | |
1203 | const char *source) | |
1204 | { | |
1205 | size_t offset; | |
1206 | struct bdb_header *bdb; | |
1207 | ||
1208 | if (vbt == NULL) { | |
1209 | DRM_DEBUG_DRIVER("VBT signature missing\n"); | |
1210 | return NULL; | |
1211 | } | |
1212 | ||
1213 | offset = (char *)vbt - base; | |
1214 | if (offset + sizeof(struct vbt_header) > size) { | |
1215 | DRM_DEBUG_DRIVER("VBT header incomplete\n"); | |
1216 | return NULL; | |
1217 | } | |
1218 | ||
1219 | if (memcmp(vbt->signature, "$VBT", 4)) { | |
1220 | DRM_DEBUG_DRIVER("VBT invalid signature\n"); | |
1221 | return NULL; | |
1222 | } | |
1223 | ||
1224 | offset += vbt->bdb_offset; | |
1225 | if (offset + sizeof(struct bdb_header) > size) { | |
1226 | DRM_DEBUG_DRIVER("BDB header incomplete\n"); | |
1227 | return NULL; | |
1228 | } | |
1229 | ||
1230 | bdb = (struct bdb_header *)(base + offset); | |
1231 | if (offset + bdb->bdb_size > size) { | |
1232 | DRM_DEBUG_DRIVER("BDB incomplete\n"); | |
1233 | return NULL; | |
1234 | } | |
1235 | ||
1236 | DRM_DEBUG_KMS("Using VBT from %s: %20s\n", | |
1237 | source, vbt->signature); | |
1238 | return bdb; | |
1239 | } | |
1240 | ||
79e53945 | 1241 | /** |
6d139a87 | 1242 | * intel_parse_bios - find VBT and initialize settings from the BIOS |
79e53945 JB |
1243 | * @dev: DRM device |
1244 | * | |
1245 | * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers | |
1246 | * to appropriate values. | |
1247 | * | |
79e53945 JB |
1248 | * Returns 0 on success, nonzero on failure. |
1249 | */ | |
0317c6ce | 1250 | int |
6d139a87 | 1251 | intel_parse_bios(struct drm_device *dev) |
79e53945 JB |
1252 | { |
1253 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1254 | struct pci_dev *pdev = dev->pdev; | |
44834a67 CW |
1255 | struct bdb_header *bdb = NULL; |
1256 | u8 __iomem *bios = NULL; | |
1257 | ||
ab5c608b BW |
1258 | if (HAS_PCH_NOP(dev)) |
1259 | return -ENODEV; | |
1260 | ||
6a04002b | 1261 | init_vbt_defaults(dev_priv); |
f899fc64 | 1262 | |
44834a67 | 1263 | /* XXX Should this validation be moved to intel_opregion.c? */ |
3dd4e846 CW |
1264 | if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) |
1265 | bdb = validate_vbt((char *)dev_priv->opregion.header, OPREGION_SIZE, | |
1266 | (struct vbt_header *)dev_priv->opregion.vbt, | |
1267 | "OpRegion"); | |
79e53945 | 1268 | |
44834a67 | 1269 | if (bdb == NULL) { |
3dd4e846 | 1270 | size_t i, size; |
79e53945 | 1271 | |
44834a67 CW |
1272 | bios = pci_map_rom(pdev, &size); |
1273 | if (!bios) | |
1274 | return -1; | |
1275 | ||
1276 | /* Scour memory looking for the VBT signature */ | |
1277 | for (i = 0; i + 4 < size; i++) { | |
3dd4e846 CW |
1278 | if (memcmp(bios + i, "$VBT", 4) == 0) { |
1279 | bdb = validate_vbt(bios, size, | |
1280 | (struct vbt_header *)(bios + i), | |
1281 | "PCI ROM"); | |
44834a67 CW |
1282 | break; |
1283 | } | |
1284 | } | |
1285 | ||
3dd4e846 | 1286 | if (!bdb) { |
44834a67 CW |
1287 | pci_unmap_rom(pdev, bios); |
1288 | return -1; | |
1289 | } | |
44834a67 | 1290 | } |
79e53945 JB |
1291 | |
1292 | /* Grab useful general definitions */ | |
1293 | parse_general_features(dev_priv, bdb); | |
db545019 | 1294 | parse_general_definitions(dev_priv, bdb); |
88631706 | 1295 | parse_lfp_panel_data(dev_priv, bdb); |
f00076d2 | 1296 | parse_lfp_backlight(dev_priv, bdb); |
88631706 | 1297 | parse_sdvo_panel_data(dev_priv, bdb); |
9b9d172d | 1298 | parse_sdvo_device_mapping(dev_priv, bdb); |
6363ee6f | 1299 | parse_device_mapping(dev_priv, bdb); |
32f9d658 | 1300 | parse_driver_features(dev_priv, bdb); |
500a8cc4 | 1301 | parse_edp(dev_priv, bdb); |
bfd7ebda | 1302 | parse_psr(dev_priv, bdb); |
d17c5443 | 1303 | parse_mipi(dev_priv, bdb); |
6acab15a | 1304 | parse_ddi_ports(dev_priv, bdb); |
32f9d658 | 1305 | |
44834a67 CW |
1306 | if (bios) |
1307 | pci_unmap_rom(pdev, bios); | |
79e53945 JB |
1308 | |
1309 | return 0; | |
1310 | } | |
6d139a87 BF |
1311 | |
1312 | /* Ensure that vital registers have been initialised, even if the BIOS | |
1313 | * is absent or just failing to do its job. | |
1314 | */ | |
1315 | void intel_setup_bios(struct drm_device *dev) | |
1316 | { | |
1317 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1318 | ||
1319 | /* Set the Panel Power On/Off timings if uninitialized. */ | |
42d42e7e DL |
1320 | if (!HAS_PCH_SPLIT(dev) && |
1321 | I915_READ(PP_ON_DELAYS) == 0 && I915_READ(PP_OFF_DELAYS) == 0) { | |
6d139a87 BF |
1322 | /* Set T2 to 40ms and T5 to 200ms */ |
1323 | I915_WRITE(PP_ON_DELAYS, 0x019007d0); | |
1324 | ||
1325 | /* Set T3 to 35ms and Tx to 200ms */ | |
1326 | I915_WRITE(PP_OFF_DELAYS, 0x015e07d0); | |
1327 | } | |
1328 | } |