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