blob: 2f434297246e53534a0b453022e1927a581d99af [file] [log] [blame]
Jesse Barnes79e53942008-11-07 14:24:08 -08001/*
Keith Packard39507252011-09-22 12:30:16 -07002 * Copyright © 2006 Intel Corporation
Jesse Barnes79e53942008-11-07 14:24:08 -08003 *
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 */
Daniel Vetter25e341c2012-03-24 23:51:30 +010027#include <linux/dmi.h>
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -070028#include <drm/drm_dp_helper.h>
David Howells760285e2012-10-02 18:01:07 +010029#include <drm/drmP.h>
30#include <drm/i915_drm.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080031#include "i915_drv.h"
32#include "intel_bios.h"
33
yakui_zhao9b9d1722009-05-31 17:17:17 +080034#define SLAVE_ADDR1 0x70
35#define SLAVE_ADDR2 0x72
Jesse Barnes79e53942008-11-07 14:24:08 -080036
Zhenyu Wang500a8cc2010-01-13 11:19:52 +080037static int panel_type;
38
Jesse Barnes79e53942008-11-07 14:24:08 -080039static void *
40find_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 */
52 while (index < total) {
53 current_id = *(base + index);
54 index++;
55 current_size = *((u16 *)(base + index));
56 index += 2;
57 if (current_id == section_id)
58 return base + index;
59 index += current_size;
60 }
61
62 return NULL;
63}
64
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +020065static u16
66get_blocksize(void *p)
67{
68 u16 *block_ptr, block_size;
69
70 block_ptr = (u16 *)((char *)p - 2);
71 block_size = *block_ptr;
72 return block_size;
73}
74
Jesse Barnes79e53942008-11-07 14:24:08 -080075static void
Ma Ling88631702009-05-13 11:19:55 +080076fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
Chris Wilson99834ea2011-07-13 21:01:46 +010077 const struct lvds_dvo_timing *dvo_timing)
Ma Ling88631702009-05-13 11:19:55 +080078{
79 panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
80 dvo_timing->hactive_lo;
81 panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
82 ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
83 panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
84 dvo_timing->hsync_pulse_width;
85 panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
86 ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
87
88 panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) |
89 dvo_timing->vactive_lo;
90 panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay +
91 dvo_timing->vsync_off;
92 panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
93 dvo_timing->vsync_pulse_width;
94 panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
95 ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
96 panel_fixed_mode->clock = dvo_timing->clock * 10;
97 panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
98
Adam Jackson9bc35492010-05-28 17:17:37 -040099 if (dvo_timing->hsync_positive)
100 panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
101 else
102 panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
103
104 if (dvo_timing->vsync_positive)
105 panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
106 else
107 panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
108
Ma Ling88631702009-05-13 11:19:55 +0800109 /* Some VBTs have bogus h/vtotal values */
110 if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
111 panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
112 if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
113 panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
114
115 drm_mode_set_name(panel_fixed_mode);
116}
117
Chris Wilson99834ea2011-07-13 21:01:46 +0100118static bool
119lvds_dvo_timing_equal_size(const struct lvds_dvo_timing *a,
120 const struct lvds_dvo_timing *b)
121{
122 if (a->hactive_hi != b->hactive_hi ||
123 a->hactive_lo != b->hactive_lo)
124 return false;
125
126 if (a->hsync_off_hi != b->hsync_off_hi ||
127 a->hsync_off_lo != b->hsync_off_lo)
128 return false;
129
130 if (a->hsync_pulse_width != b->hsync_pulse_width)
131 return false;
132
133 if (a->hblank_hi != b->hblank_hi ||
134 a->hblank_lo != b->hblank_lo)
135 return false;
136
137 if (a->vactive_hi != b->vactive_hi ||
138 a->vactive_lo != b->vactive_lo)
139 return false;
140
141 if (a->vsync_off != b->vsync_off)
142 return false;
143
144 if (a->vsync_pulse_width != b->vsync_pulse_width)
145 return false;
146
147 if (a->vblank_hi != b->vblank_hi ||
148 a->vblank_lo != b->vblank_lo)
149 return false;
150
151 return true;
152}
153
154static const struct lvds_dvo_timing *
155get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data,
156 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs,
157 int index)
158{
159 /*
160 * the size of fp_timing varies on the different platform.
161 * So calculate the DVO timing relative offset in LVDS data
162 * entry to get the DVO timing entry
163 */
164
165 int lfp_data_size =
166 lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset -
167 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset;
168 int dvo_timing_offset =
169 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset -
170 lvds_lfp_data_ptrs->ptr[0].fp_timing_offset;
171 char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index;
172
173 return (struct lvds_dvo_timing *)(entry + dvo_timing_offset);
174}
175
Takashi Iwaib0354382012-03-20 13:07:05 +0100176/* get lvds_fp_timing entry
177 * this function may return NULL if the corresponding entry is invalid
178 */
179static const struct lvds_fp_timing *
180get_lvds_fp_timing(const struct bdb_header *bdb,
181 const struct bdb_lvds_lfp_data *data,
182 const struct bdb_lvds_lfp_data_ptrs *ptrs,
183 int index)
184{
185 size_t data_ofs = (const u8 *)data - (const u8 *)bdb;
186 u16 data_size = ((const u16 *)data)[-1]; /* stored in header */
187 size_t ofs;
188
189 if (index >= ARRAY_SIZE(ptrs->ptr))
190 return NULL;
191 ofs = ptrs->ptr[index].fp_timing_offset;
192 if (ofs < data_ofs ||
193 ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size)
194 return NULL;
195 return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
196}
197
Ma Ling88631702009-05-13 11:19:55 +0800198/* Try to find integrated panel data */
199static void
200parse_lfp_panel_data(struct drm_i915_private *dev_priv,
201 struct bdb_header *bdb)
Jesse Barnes79e53942008-11-07 14:24:08 -0800202{
Chris Wilson99834ea2011-07-13 21:01:46 +0100203 const struct bdb_lvds_options *lvds_options;
204 const struct bdb_lvds_lfp_data *lvds_lfp_data;
205 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
206 const struct lvds_dvo_timing *panel_dvo_timing;
Takashi Iwaib0354382012-03-20 13:07:05 +0100207 const struct lvds_fp_timing *fp_timing;
Jesse Barnes79e53942008-11-07 14:24:08 -0800208 struct drm_display_mode *panel_fixed_mode;
Chris Wilson99834ea2011-07-13 21:01:46 +0100209 int i, downclock;
Jesse Barnes79e53942008-11-07 14:24:08 -0800210
Jesse Barnes79e53942008-11-07 14:24:08 -0800211 lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
212 if (!lvds_options)
213 return;
214
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300215 dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
Jesse Barnes79e53942008-11-07 14:24:08 -0800216 if (lvds_options->panel_type == 0xff)
217 return;
Simon Que6a040022010-09-30 09:36:39 +0100218
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800219 panel_type = lvds_options->panel_type;
Jesse Barnes79e53942008-11-07 14:24:08 -0800220
221 lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
222 if (!lvds_lfp_data)
223 return;
224
Jesse Barnes1b16de02009-06-22 11:30:30 -0700225 lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
226 if (!lvds_lfp_data_ptrs)
227 return;
228
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300229 dev_priv->vbt.lvds_vbt = 1;
Jesse Barnes79e53942008-11-07 14:24:08 -0800230
Chris Wilson99834ea2011-07-13 21:01:46 +0100231 panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
232 lvds_lfp_data_ptrs,
233 lvds_options->panel_type);
Jesse Barnes79e53942008-11-07 14:24:08 -0800234
Eric Anholt9a298b22009-03-24 12:23:04 -0700235 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Chris Wilson6edc3242010-09-12 17:16:17 +0100236 if (!panel_fixed_mode)
237 return;
Jesse Barnes79e53942008-11-07 14:24:08 -0800238
Chris Wilson99834ea2011-07-13 21:01:46 +0100239 fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
Jesse Barnes79e53942008-11-07 14:24:08 -0800240
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300241 dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800242
Zhao Yakui28c97732009-10-09 11:39:41 +0800243 DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800244 drm_mode_debug_printmodeline(panel_fixed_mode);
245
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800246 /*
Chris Wilson99834ea2011-07-13 21:01:46 +0100247 * Iterate over the LVDS panel timing info to find the lowest clock
248 * for the native resolution.
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800249 */
Chris Wilson99834ea2011-07-13 21:01:46 +0100250 downclock = panel_dvo_timing->clock;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800251 for (i = 0; i < 16; i++) {
Chris Wilson99834ea2011-07-13 21:01:46 +0100252 const struct lvds_dvo_timing *dvo_timing;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800253
Chris Wilson99834ea2011-07-13 21:01:46 +0100254 dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
255 lvds_lfp_data_ptrs,
256 i);
257 if (lvds_dvo_timing_equal_size(dvo_timing, panel_dvo_timing) &&
258 dvo_timing->clock < downclock)
259 downclock = dvo_timing->clock;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800260 }
Chris Wilson99834ea2011-07-13 21:01:46 +0100261
262 if (downclock < panel_dvo_timing->clock && i915_lvds_downclock) {
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800263 dev_priv->lvds_downclock_avail = 1;
Chris Wilson99834ea2011-07-13 21:01:46 +0100264 dev_priv->lvds_downclock = downclock * 10;
Joe Perchesbbb0aef2011-04-17 20:35:52 -0700265 DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
266 "Normal Clock %dKHz, downclock %dKHz\n",
Chris Wilson99834ea2011-07-13 21:01:46 +0100267 panel_fixed_mode->clock, 10*downclock);
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800268 }
Takashi Iwaib0354382012-03-20 13:07:05 +0100269
270 fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
271 lvds_lfp_data_ptrs,
272 lvds_options->panel_type);
273 if (fp_timing) {
274 /* check the resolution, just to be sure */
275 if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
276 fp_timing->y_res == panel_fixed_mode->vdisplay) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300277 dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
Takashi Iwaib0354382012-03-20 13:07:05 +0100278 DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300279 dev_priv->vbt.bios_lvds_val);
Takashi Iwaib0354382012-03-20 13:07:05 +0100280 }
281 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800282}
283
Ma Ling88631702009-05-13 11:19:55 +0800284/* Try to find sdvo panel data */
285static void
286parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
287 struct bdb_header *bdb)
288{
Ma Ling88631702009-05-13 11:19:55 +0800289 struct lvds_dvo_timing *dvo_timing;
290 struct drm_display_mode *panel_fixed_mode;
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000291 int index;
Ma Ling88631702009-05-13 11:19:55 +0800292
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000293 index = i915_vbt_sdvo_panel_type;
Mathias Fröhlichc10e4082012-03-01 06:44:35 +0100294 if (index == -2) {
295 DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
296 return;
297 }
298
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000299 if (index == -1) {
300 struct bdb_sdvo_lvds_options *sdvo_lvds_options;
301
302 sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
303 if (!sdvo_lvds_options)
304 return;
305
306 index = sdvo_lvds_options->panel_type;
307 }
Ma Ling88631702009-05-13 11:19:55 +0800308
309 dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
310 if (!dvo_timing)
311 return;
312
Eric Anholt9a298b22009-03-24 12:23:04 -0700313 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Ma Ling88631702009-05-13 11:19:55 +0800314 if (!panel_fixed_mode)
315 return;
316
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000317 fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
Ma Ling88631702009-05-13 11:19:55 +0800318
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300319 dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
Ma Ling88631702009-05-13 11:19:55 +0800320
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000321 DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
322 drm_mode_debug_printmodeline(panel_fixed_mode);
Ma Ling88631702009-05-13 11:19:55 +0800323}
324
Bryan Freed9a4114f2011-01-12 13:38:39 -0800325static int intel_bios_ssc_frequency(struct drm_device *dev,
326 bool alternate)
327{
328 switch (INTEL_INFO(dev)->gen) {
329 case 2:
330 return alternate ? 66 : 48;
331 case 3:
332 case 4:
333 return alternate ? 100 : 96;
334 default:
335 return alternate ? 100 : 120;
336 }
337}
338
Jesse Barnes79e53942008-11-07 14:24:08 -0800339static void
340parse_general_features(struct drm_i915_private *dev_priv,
341 struct bdb_header *bdb)
342{
Eric Anholtbad720f2009-10-22 16:11:14 -0700343 struct drm_device *dev = dev_priv->dev;
Jesse Barnes79e53942008-11-07 14:24:08 -0800344 struct bdb_general_features *general;
345
Jesse Barnes79e53942008-11-07 14:24:08 -0800346 general = find_section(bdb, BDB_GENERAL_FEATURES);
347 if (general) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300348 dev_priv->vbt.int_tv_support = general->int_tv_support;
349 dev_priv->vbt.int_crt_support = general->int_crt_support;
350 dev_priv->vbt.lvds_use_ssc = general->enable_ssc;
351 dev_priv->vbt.lvds_ssc_freq =
Bryan Freed9a4114f2011-01-12 13:38:39 -0800352 intel_bios_ssc_frequency(dev, general->ssc_freq);
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300353 dev_priv->vbt.display_clock_mode = general->display_clock_mode;
354 dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
Paulo Zanoni3f704fa2013-04-08 15:48:07 -0300355 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",
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300356 dev_priv->vbt.int_tv_support,
357 dev_priv->vbt.int_crt_support,
358 dev_priv->vbt.lvds_use_ssc,
359 dev_priv->vbt.lvds_ssc_freq,
360 dev_priv->vbt.display_clock_mode,
361 dev_priv->vbt.fdi_rx_polarity_inverted);
Jesse Barnes79e53942008-11-07 14:24:08 -0800362 }
363}
364
yakui_zhao9b9d1722009-05-31 17:17:17 +0800365static void
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200366parse_general_definitions(struct drm_i915_private *dev_priv,
367 struct bdb_header *bdb)
368{
369 struct bdb_general_definitions *general;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200370
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200371 general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
372 if (general) {
373 u16 block_size = get_blocksize(general);
374 if (block_size >= sizeof(*general)) {
375 int bus_pin = general->crt_ddc_gmbus_pin;
Zhao Yakui28c97732009-10-09 11:39:41 +0800376 DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800377 if (intel_gmbus_is_port_valid(bus_pin))
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300378 dev_priv->vbt.crt_ddc_pin = bus_pin;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200379 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800380 DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800381 block_size);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200382 }
383 }
384}
385
386static void
yakui_zhao9b9d1722009-05-31 17:17:17 +0800387parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
Chris Wilson44834a62010-08-19 16:09:23 +0100388 struct bdb_header *bdb)
yakui_zhao9b9d1722009-05-31 17:17:17 +0800389{
390 struct sdvo_device_mapping *p_mapping;
391 struct bdb_general_definitions *p_defs;
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300392 union child_device_config *p_child;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800393 int i, child_device_num, count;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200394 u16 block_size;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800395
396 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
397 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100398 DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800399 return;
400 }
401 /* judge whether the size of child device meets the requirements.
402 * If the child device size obtained from general definition block
403 * is different with sizeof(struct child_device_config), skip the
404 * parsing of sdvo device info
405 */
406 if (p_defs->child_dev_size != sizeof(*p_child)) {
407 /* different child dev size . Ignore it */
Zhao Yakui28c97732009-10-09 11:39:41 +0800408 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800409 return;
410 }
411 /* get the block size of general definitions */
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200412 block_size = get_blocksize(p_defs);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800413 /* get the number of child device */
414 child_device_num = (block_size - sizeof(*p_defs)) /
415 sizeof(*p_child);
416 count = 0;
417 for (i = 0; i < child_device_num; i++) {
418 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300419 if (!p_child->old.device_type) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800420 /* skip the device block if device type is invalid */
421 continue;
422 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300423 if (p_child->old.slave_addr != SLAVE_ADDR1 &&
424 p_child->old.slave_addr != SLAVE_ADDR2) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800425 /*
426 * If the slave address is neither 0x70 nor 0x72,
427 * it is not a SDVO device. Skip it.
428 */
429 continue;
430 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300431 if (p_child->old.dvo_port != DEVICE_PORT_DVOB &&
432 p_child->old.dvo_port != DEVICE_PORT_DVOC) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800433 /* skip the incorrect SDVO port */
Akshay Joshi0206e352011-08-16 15:34:10 -0400434 DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800435 continue;
436 }
Zhao Yakui28c97732009-10-09 11:39:41 +0800437 DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
438 " %s port\n",
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300439 p_child->old.slave_addr,
440 (p_child->old.dvo_port == DEVICE_PORT_DVOB) ?
yakui_zhao9b9d1722009-05-31 17:17:17 +0800441 "SDVOB" : "SDVOC");
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300442 p_mapping = &(dev_priv->sdvo_mappings[p_child->old.dvo_port - 1]);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800443 if (!p_mapping->initialized) {
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300444 p_mapping->dvo_port = p_child->old.dvo_port;
445 p_mapping->slave_addr = p_child->old.slave_addr;
446 p_mapping->dvo_wiring = p_child->old.dvo_wiring;
447 p_mapping->ddc_pin = p_child->old.ddc_pin;
448 p_mapping->i2c_pin = p_child->old.i2c_pin;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800449 p_mapping->initialized = 1;
Adam Jackson46eb3032011-06-16 16:36:23 -0400450 DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
Chris Wilsone957d772010-09-24 12:52:03 +0100451 p_mapping->dvo_port,
452 p_mapping->slave_addr,
453 p_mapping->dvo_wiring,
454 p_mapping->ddc_pin,
Adam Jackson46eb3032011-06-16 16:36:23 -0400455 p_mapping->i2c_pin);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800456 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800457 DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
yakui_zhao9b9d1722009-05-31 17:17:17 +0800458 "two SDVO device.\n");
459 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300460 if (p_child->old.slave2_addr) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800461 /* Maybe this is a SDVO device with multiple inputs */
462 /* And the mapping info is not added */
Zhao Yakui28c97732009-10-09 11:39:41 +0800463 DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
464 " is a SDVO device with multiple inputs.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800465 }
466 count++;
467 }
468
469 if (!count) {
470 /* No SDVO device info is found */
Zhao Yakui28c97732009-10-09 11:39:41 +0800471 DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800472 }
473 return;
474}
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800475
476static void
477parse_driver_features(struct drm_i915_private *dev_priv,
478 struct bdb_header *bdb)
479{
480 struct drm_device *dev = dev_priv->dev;
481 struct bdb_driver_features *driver;
482
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800483 driver = find_section(bdb, BDB_DRIVER_FEATURES);
Jesse Barnes652c3932009-08-17 13:31:43 -0700484 if (!driver)
485 return;
486
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100487 if (SUPPORTS_EDP(dev) &&
488 driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300489 dev_priv->vbt.edp_support = 1;
Jesse Barnes652c3932009-08-17 13:31:43 -0700490
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100491 if (driver->dual_frequency)
Jesse Barnes652c3932009-08-17 13:31:43 -0700492 dev_priv->render_reclock_avail = true;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800493}
494
Zhao Yakui6363ee62009-11-24 09:48:44 +0800495static void
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800496parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
497{
498 struct bdb_edp *edp;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700499 struct edp_power_seq *edp_pps;
500 struct edp_link_params *edp_link_params;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800501
502 edp = find_section(bdb, BDB_EDP);
503 if (!edp) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300504 if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->vbt.edp_support)
Jani Nikula9a30a612012-11-12 14:33:45 +0200505 DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800506 return;
507 }
508
509 switch ((edp->color_depth >> (panel_type * 2)) & 3) {
510 case EDP_18BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300511 dev_priv->vbt.edp_bpp = 18;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800512 break;
513 case EDP_24BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300514 dev_priv->vbt.edp_bpp = 24;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800515 break;
516 case EDP_30BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300517 dev_priv->vbt.edp_bpp = 30;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800518 break;
519 }
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100520
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700521 /* Get the eDP sequencing and link info */
522 edp_pps = &edp->power_seqs[panel_type];
523 edp_link_params = &edp->link_params[panel_type];
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100524
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300525 dev_priv->vbt.edp_pps = *edp_pps;
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100526
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300527 dev_priv->vbt.edp_rate = edp_link_params->rate ? DP_LINK_BW_2_7 :
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700528 DP_LINK_BW_1_62;
529 switch (edp_link_params->lanes) {
530 case 0:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300531 dev_priv->vbt.edp_lanes = 1;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700532 break;
533 case 1:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300534 dev_priv->vbt.edp_lanes = 2;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700535 break;
536 case 3:
537 default:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300538 dev_priv->vbt.edp_lanes = 4;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700539 break;
540 }
541 switch (edp_link_params->preemphasis) {
542 case 0:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300543 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_0;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700544 break;
545 case 1:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300546 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700547 break;
548 case 2:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300549 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_6;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700550 break;
551 case 3:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300552 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700553 break;
554 }
555 switch (edp_link_params->vswing) {
556 case 0:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300557 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_400;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700558 break;
559 case 1:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300560 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_600;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700561 break;
562 case 2:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300563 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_800;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700564 break;
565 case 3:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300566 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_1200;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700567 break;
568 }
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800569}
570
571static void
Shobhit Kumard17c5442013-08-27 15:12:25 +0300572parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
573{
574 struct bdb_mipi *mipi;
575
576 mipi = find_section(bdb, BDB_MIPI);
577 if (!mipi) {
578 DRM_DEBUG_KMS("No MIPI BDB found");
579 return;
580 }
581
582 /* XXX: add more info */
583 dev_priv->vbt.dsi.panel_id = mipi->panel_id;
584}
585
Paulo Zanoni6acab152013-09-12 17:06:24 -0300586static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
587 struct bdb_header *bdb)
588{
589 union child_device_config *it, *child = NULL;
590 struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
591 uint8_t hdmi_level_shift;
592 int i, j;
593 /* Each DDI port can have more than one value on the "DVO Port" field,
594 * so look for all the possible values for each port and abort if more
595 * than one is found. */
596 int dvo_ports[][2] = {
597 {DVO_PORT_HDMIA, DVO_PORT_DPA},
598 {DVO_PORT_HDMIB, DVO_PORT_DPB},
599 {DVO_PORT_HDMIC, DVO_PORT_DPC},
600 {DVO_PORT_HDMID, DVO_PORT_DPD},
601 {DVO_PORT_CRT, -1 /* Port E can only be DVO_PORT_CRT */ },
602 };
603
604 /* Find the child device to use, abort if more than one found. */
605 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
606 it = dev_priv->vbt.child_dev + i;
607
608 for (j = 0; j < 2; j++) {
609 if (dvo_ports[port][j] == -1)
610 break;
611
612 if (it->common.dvo_port == dvo_ports[port][j]) {
613 if (child) {
614 DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n",
615 port_name(port));
616 return;
617 }
618 child = it;
619 }
620 }
621 }
622 if (!child)
623 return;
624
625 if (bdb->version >= 158) {
626 /* The VBT HDMI level shift values match the table we have. */
627 hdmi_level_shift = child->raw[7] & 0xF;
628 if (hdmi_level_shift < 0xC) {
629 DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
630 port_name(port),
631 hdmi_level_shift);
632 info->hdmi_level_shift = hdmi_level_shift;
633 }
634 }
635}
636
637static void parse_ddi_ports(struct drm_i915_private *dev_priv,
638 struct bdb_header *bdb)
639{
640 struct drm_device *dev = dev_priv->dev;
641 enum port port;
642
643 if (!HAS_DDI(dev))
644 return;
645
646 if (!dev_priv->vbt.child_dev_num)
647 return;
648
649 if (bdb->version < 155)
650 return;
651
652 for (port = PORT_A; port < I915_MAX_PORTS; port++)
653 parse_ddi_port(dev_priv, port, bdb);
654}
655
Shobhit Kumard17c5442013-08-27 15:12:25 +0300656static void
Zhao Yakui6363ee62009-11-24 09:48:44 +0800657parse_device_mapping(struct drm_i915_private *dev_priv,
658 struct bdb_header *bdb)
659{
660 struct bdb_general_definitions *p_defs;
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300661 union child_device_config *p_child, *child_dev_ptr;
Zhao Yakui6363ee62009-11-24 09:48:44 +0800662 int i, child_device_num, count;
663 u16 block_size;
664
665 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
666 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100667 DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +0800668 return;
669 }
670 /* judge whether the size of child device meets the requirements.
671 * If the child device size obtained from general definition block
672 * is different with sizeof(struct child_device_config), skip the
673 * parsing of sdvo device info
674 */
675 if (p_defs->child_dev_size != sizeof(*p_child)) {
676 /* different child dev size . Ignore it */
677 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
678 return;
679 }
680 /* get the block size of general definitions */
681 block_size = get_blocksize(p_defs);
682 /* get the number of child device */
683 child_device_num = (block_size - sizeof(*p_defs)) /
684 sizeof(*p_child);
685 count = 0;
686 /* get the number of child device that is present */
687 for (i = 0; i < child_device_num; i++) {
688 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300689 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +0800690 /* skip the device block if device type is invalid */
691 continue;
692 }
693 count++;
694 }
695 if (!count) {
Akshay Joshi0206e352011-08-16 15:34:10 -0400696 DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +0800697 return;
698 }
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300699 dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL);
700 if (!dev_priv->vbt.child_dev) {
Zhao Yakui6363ee62009-11-24 09:48:44 +0800701 DRM_DEBUG_KMS("No memory space for child device\n");
702 return;
703 }
704
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300705 dev_priv->vbt.child_dev_num = count;
Zhao Yakui6363ee62009-11-24 09:48:44 +0800706 count = 0;
707 for (i = 0; i < child_device_num; i++) {
708 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300709 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +0800710 /* skip the device block if device type is invalid */
711 continue;
712 }
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300713 child_dev_ptr = dev_priv->vbt.child_dev + count;
Zhao Yakui6363ee62009-11-24 09:48:44 +0800714 count++;
715 memcpy((void *)child_dev_ptr, (void *)p_child,
716 sizeof(*p_child));
717 }
718 return;
719}
Chris Wilson44834a62010-08-19 16:09:23 +0100720
Simon Que6a040022010-09-30 09:36:39 +0100721static void
722init_vbt_defaults(struct drm_i915_private *dev_priv)
723{
Bryan Freed9a4114f2011-01-12 13:38:39 -0800724 struct drm_device *dev = dev_priv->dev;
Paulo Zanoni6acab152013-09-12 17:06:24 -0300725 enum port port;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800726
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300727 dev_priv->vbt.crt_ddc_pin = GMBUS_PORT_VGADDC;
Simon Que6a040022010-09-30 09:36:39 +0100728
729 /* LFP panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300730 dev_priv->vbt.lvds_dither = 1;
731 dev_priv->vbt.lvds_vbt = 0;
Simon Que6a040022010-09-30 09:36:39 +0100732
733 /* SDVO panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300734 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
Simon Que6a040022010-09-30 09:36:39 +0100735
736 /* general features */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300737 dev_priv->vbt.int_tv_support = 1;
738 dev_priv->vbt.int_crt_support = 1;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800739
740 /* Default to using SSC */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300741 dev_priv->vbt.lvds_use_ssc = 1;
742 dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev, 1);
743 DRM_DEBUG_KMS("Set default to SSC at %dMHz\n", dev_priv->vbt.lvds_ssc_freq);
Paulo Zanoni6acab152013-09-12 17:06:24 -0300744
745 for (port = PORT_A; port < I915_MAX_PORTS; port++) {
746 /* Recommended BSpec default: 800mV 0dB. */
747 dev_priv->vbt.ddi_port_info[port].hdmi_level_shift = 6;
748 }
Simon Que6a040022010-09-30 09:36:39 +0100749}
750
Daniel Vetter25e341c2012-03-24 23:51:30 +0100751static int __init intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
752{
753 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
754 "VBIOS ROM for %s\n",
755 id->ident);
756 return 1;
757}
758
759static const struct dmi_system_id intel_no_opregion_vbt[] = {
760 {
761 .callback = intel_no_opregion_vbt_callback,
762 .ident = "ThinkCentre A57",
763 .matches = {
764 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
765 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
766 },
767 },
768 { }
769};
770
Jesse Barnes79e53942008-11-07 14:24:08 -0800771/**
Bryan Freed6d139a82010-10-14 09:14:51 +0100772 * intel_parse_bios - find VBT and initialize settings from the BIOS
Jesse Barnes79e53942008-11-07 14:24:08 -0800773 * @dev: DRM device
774 *
775 * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers
776 * to appropriate values.
777 *
Jesse Barnes79e53942008-11-07 14:24:08 -0800778 * Returns 0 on success, nonzero on failure.
779 */
Dan Carpenter0317c6c2012-06-27 12:10:30 +0300780int
Bryan Freed6d139a82010-10-14 09:14:51 +0100781intel_parse_bios(struct drm_device *dev)
Jesse Barnes79e53942008-11-07 14:24:08 -0800782{
783 struct drm_i915_private *dev_priv = dev->dev_private;
784 struct pci_dev *pdev = dev->pdev;
Chris Wilson44834a62010-08-19 16:09:23 +0100785 struct bdb_header *bdb = NULL;
786 u8 __iomem *bios = NULL;
Jesse Barnes79e53942008-11-07 14:24:08 -0800787
Ben Widawskyab5c6082013-04-05 13:12:41 -0700788 if (HAS_PCH_NOP(dev))
789 return -ENODEV;
790
Simon Que6a040022010-09-30 09:36:39 +0100791 init_vbt_defaults(dev_priv);
Chris Wilsonf899fc62010-07-20 15:44:45 -0700792
Chris Wilson44834a62010-08-19 16:09:23 +0100793 /* XXX Should this validation be moved to intel_opregion.c? */
Daniel Vetter25e341c2012-03-24 23:51:30 +0100794 if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) {
Chris Wilson44834a62010-08-19 16:09:23 +0100795 struct vbt_header *vbt = dev_priv->opregion.vbt;
796 if (memcmp(vbt->signature, "$VBT", 4) == 0) {
Keith Packard562396b2011-09-22 12:32:35 -0700797 DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n",
Chris Wilson44834a62010-08-19 16:09:23 +0100798 vbt->signature);
799 bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
800 } else
801 dev_priv->opregion.vbt = NULL;
802 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800803
Chris Wilson44834a62010-08-19 16:09:23 +0100804 if (bdb == NULL) {
805 struct vbt_header *vbt = NULL;
806 size_t size;
807 int i;
808
809 bios = pci_map_rom(pdev, &size);
810 if (!bios)
811 return -1;
812
813 /* Scour memory looking for the VBT signature */
814 for (i = 0; i + 4 < size; i++) {
815 if (!memcmp(bios + i, "$VBT", 4)) {
816 vbt = (struct vbt_header *)(bios + i);
817 break;
818 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800819 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800820
Chris Wilson44834a62010-08-19 16:09:23 +0100821 if (!vbt) {
Chris Wilsonbd455452012-02-24 16:53:28 +0000822 DRM_DEBUG_DRIVER("VBT signature missing\n");
Chris Wilson44834a62010-08-19 16:09:23 +0100823 pci_unmap_rom(pdev, bios);
824 return -1;
825 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800826
Chris Wilson44834a62010-08-19 16:09:23 +0100827 bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
828 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800829
830 /* Grab useful general definitions */
831 parse_general_features(dev_priv, bdb);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200832 parse_general_definitions(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +0800833 parse_lfp_panel_data(dev_priv, bdb);
834 parse_sdvo_panel_data(dev_priv, bdb);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800835 parse_sdvo_device_mapping(dev_priv, bdb);
Zhao Yakui6363ee62009-11-24 09:48:44 +0800836 parse_device_mapping(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800837 parse_driver_features(dev_priv, bdb);
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800838 parse_edp(dev_priv, bdb);
Shobhit Kumard17c5442013-08-27 15:12:25 +0300839 parse_mipi(dev_priv, bdb);
Paulo Zanoni6acab152013-09-12 17:06:24 -0300840 parse_ddi_ports(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800841
Chris Wilson44834a62010-08-19 16:09:23 +0100842 if (bios)
843 pci_unmap_rom(pdev, bios);
Jesse Barnes79e53942008-11-07 14:24:08 -0800844
845 return 0;
846}
Bryan Freed6d139a82010-10-14 09:14:51 +0100847
848/* Ensure that vital registers have been initialised, even if the BIOS
849 * is absent or just failing to do its job.
850 */
851void intel_setup_bios(struct drm_device *dev)
852{
853 struct drm_i915_private *dev_priv = dev->dev_private;
854
855 /* Set the Panel Power On/Off timings if uninitialized. */
Damien Lespiau42d42e72012-10-31 19:23:16 +0000856 if (!HAS_PCH_SPLIT(dev) &&
857 I915_READ(PP_ON_DELAYS) == 0 && I915_READ(PP_OFF_DELAYS) == 0) {
Bryan Freed6d139a82010-10-14 09:14:51 +0100858 /* Set T2 to 40ms and T5 to 200ms */
859 I915_WRITE(PP_ON_DELAYS, 0x019007d0);
860
861 /* Set T3 to 35ms and Tx to 200ms */
862 I915_WRITE(PP_OFF_DELAYS, 0x015e07d0);
863 }
864}