blob: 2b2078695d2acb9c105a56b8256a87a625f428e1 [file] [log] [blame]
Jesse Barnes79e53942008-11-07 14:24:08 -08001/*
2 * Copyright © 2006 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 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 */
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -070027#include <drm/drm_dp_helper.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080028#include "drmP.h"
29#include "drm.h"
30#include "i915_drm.h"
31#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,
77 struct lvds_dvo_timing *dvo_timing)
78{
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
118/* Try to find integrated panel data */
119static void
120parse_lfp_panel_data(struct drm_i915_private *dev_priv,
121 struct bdb_header *bdb)
Jesse Barnes79e53942008-11-07 14:24:08 -0800122{
123 struct bdb_lvds_options *lvds_options;
124 struct bdb_lvds_lfp_data *lvds_lfp_data;
Jesse Barnes1b16de02009-06-22 11:30:30 -0700125 struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
Jesse Barnes79e53942008-11-07 14:24:08 -0800126 struct bdb_lvds_lfp_data_entry *entry;
127 struct lvds_dvo_timing *dvo_timing;
128 struct drm_display_mode *panel_fixed_mode;
Zhao Yakuicdaa0522009-07-28 10:54:13 +0800129 int lfp_data_size, dvo_timing_offset;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800130 int i, temp_downclock;
131 struct drm_display_mode *temp_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800132
Jesse Barnes79e53942008-11-07 14:24:08 -0800133 lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
134 if (!lvds_options)
135 return;
136
137 dev_priv->lvds_dither = lvds_options->pixel_dither;
138 if (lvds_options->panel_type == 0xff)
139 return;
Simon Que6a040022010-09-30 09:36:39 +0100140
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800141 panel_type = lvds_options->panel_type;
Jesse Barnes79e53942008-11-07 14:24:08 -0800142
143 lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
144 if (!lvds_lfp_data)
145 return;
146
Jesse Barnes1b16de02009-06-22 11:30:30 -0700147 lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
148 if (!lvds_lfp_data_ptrs)
149 return;
150
Jesse Barnes79e53942008-11-07 14:24:08 -0800151 dev_priv->lvds_vbt = 1;
152
Jesse Barnes1b16de02009-06-22 11:30:30 -0700153 lfp_data_size = lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset -
154 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset;
155 entry = (struct bdb_lvds_lfp_data_entry *)
156 ((uint8_t *)lvds_lfp_data->data + (lfp_data_size *
157 lvds_options->panel_type));
Zhao Yakuicdaa0522009-07-28 10:54:13 +0800158 dvo_timing_offset = lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset -
159 lvds_lfp_data_ptrs->ptr[0].fp_timing_offset;
Zhenyu Wang50199142009-07-10 14:39:59 +0800160
Zhao Yakuicdaa0522009-07-28 10:54:13 +0800161 /*
162 * the size of fp_timing varies on the different platform.
163 * So calculate the DVO timing relative offset in LVDS data
164 * entry to get the DVO timing entry
165 */
166 dvo_timing = (struct lvds_dvo_timing *)
167 ((unsigned char *)entry + dvo_timing_offset);
Jesse Barnes79e53942008-11-07 14:24:08 -0800168
Eric Anholt9a298b22009-03-24 12:23:04 -0700169 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Chris Wilson6edc3242010-09-12 17:16:17 +0100170 if (!panel_fixed_mode)
171 return;
Jesse Barnes79e53942008-11-07 14:24:08 -0800172
Ma Ling88631702009-05-13 11:19:55 +0800173 fill_detail_timing_data(panel_fixed_mode, dvo_timing);
Jesse Barnes79e53942008-11-07 14:24:08 -0800174
Ma Ling88631702009-05-13 11:19:55 +0800175 dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800176
Zhao Yakui28c97732009-10-09 11:39:41 +0800177 DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800178 drm_mode_debug_printmodeline(panel_fixed_mode);
179
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800180 temp_mode = kzalloc(sizeof(*temp_mode), GFP_KERNEL);
181 temp_downclock = panel_fixed_mode->clock;
182 /*
183 * enumerate the LVDS panel timing info entry in VBT to check whether
184 * the LVDS downclock is found.
185 */
186 for (i = 0; i < 16; i++) {
187 entry = (struct bdb_lvds_lfp_data_entry *)
188 ((uint8_t *)lvds_lfp_data->data + (lfp_data_size * i));
189 dvo_timing = (struct lvds_dvo_timing *)
190 ((unsigned char *)entry + dvo_timing_offset);
191
192 fill_detail_timing_data(temp_mode, dvo_timing);
193
194 if (temp_mode->hdisplay == panel_fixed_mode->hdisplay &&
195 temp_mode->hsync_start == panel_fixed_mode->hsync_start &&
196 temp_mode->hsync_end == panel_fixed_mode->hsync_end &&
197 temp_mode->htotal == panel_fixed_mode->htotal &&
198 temp_mode->vdisplay == panel_fixed_mode->vdisplay &&
199 temp_mode->vsync_start == panel_fixed_mode->vsync_start &&
200 temp_mode->vsync_end == panel_fixed_mode->vsync_end &&
201 temp_mode->vtotal == panel_fixed_mode->vtotal &&
202 temp_mode->clock < temp_downclock) {
203 /*
204 * downclock is already found. But we expect
205 * to find the lower downclock.
206 */
207 temp_downclock = temp_mode->clock;
208 }
209 /* clear it to zero */
210 memset(temp_mode, 0, sizeof(*temp_mode));
211 }
212 kfree(temp_mode);
Jesse Barnes33814342010-01-14 20:48:02 +0000213 if (temp_downclock < panel_fixed_mode->clock &&
214 i915_lvds_downclock) {
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800215 dev_priv->lvds_downclock_avail = 1;
216 dev_priv->lvds_downclock = temp_downclock;
217 DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
218 "Normal Clock %dKHz, downclock %dKHz\n",
219 temp_downclock, panel_fixed_mode->clock);
220 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800221 return;
222}
223
Ma Ling88631702009-05-13 11:19:55 +0800224/* Try to find sdvo panel data */
225static void
226parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
227 struct bdb_header *bdb)
228{
229 struct bdb_sdvo_lvds_options *sdvo_lvds_options;
230 struct lvds_dvo_timing *dvo_timing;
231 struct drm_display_mode *panel_fixed_mode;
232
Ma Ling88631702009-05-13 11:19:55 +0800233 sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
234 if (!sdvo_lvds_options)
235 return;
236
237 dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
238 if (!dvo_timing)
239 return;
240
Eric Anholt9a298b22009-03-24 12:23:04 -0700241 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Ma Ling88631702009-05-13 11:19:55 +0800242
243 if (!panel_fixed_mode)
244 return;
245
246 fill_detail_timing_data(panel_fixed_mode,
247 dvo_timing + sdvo_lvds_options->panel_type);
248
249 dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode;
250
251 return;
252}
253
Jesse Barnes79e53942008-11-07 14:24:08 -0800254static void
255parse_general_features(struct drm_i915_private *dev_priv,
256 struct bdb_header *bdb)
257{
Eric Anholtbad720f2009-10-22 16:11:14 -0700258 struct drm_device *dev = dev_priv->dev;
Jesse Barnes79e53942008-11-07 14:24:08 -0800259 struct bdb_general_features *general;
260
Jesse Barnes79e53942008-11-07 14:24:08 -0800261 general = find_section(bdb, BDB_GENERAL_FEATURES);
262 if (general) {
263 dev_priv->int_tv_support = general->int_tv_support;
264 dev_priv->int_crt_support = general->int_crt_support;
Kristian Høgsberg43565a02009-02-13 20:56:52 -0500265 dev_priv->lvds_use_ssc = general->enable_ssc;
266
267 if (dev_priv->lvds_use_ssc) {
Chris Wilsonf00a3dd2010-10-21 14:57:17 +0100268 if (IS_I85X(dev))
ling.ma@intel.com6ff4fd02009-06-25 10:59:22 +0800269 dev_priv->lvds_ssc_freq =
270 general->ssc_freq ? 66 : 48;
Chris Wilsonf00a3dd2010-10-21 14:57:17 +0100271 else if (IS_GEN5(dev) || IS_GEN6(dev))
Zhenyu Wang339e5a42009-09-19 14:54:07 +0800272 dev_priv->lvds_ssc_freq =
Chris Wilson448f53a2010-12-14 20:06:20 +0000273 general->ssc_freq ? 120 : 100;
ling.ma@intel.com6ff4fd02009-06-25 10:59:22 +0800274 else
275 dev_priv->lvds_ssc_freq =
276 general->ssc_freq ? 100 : 96;
Kristian Høgsberg43565a02009-02-13 20:56:52 -0500277 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800278 }
279}
280
yakui_zhao9b9d1722009-05-31 17:17:17 +0800281static void
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200282parse_general_definitions(struct drm_i915_private *dev_priv,
283 struct bdb_header *bdb)
284{
285 struct bdb_general_definitions *general;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200286
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200287 general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
288 if (general) {
289 u16 block_size = get_blocksize(general);
290 if (block_size >= sizeof(*general)) {
291 int bus_pin = general->crt_ddc_gmbus_pin;
Zhao Yakui28c97732009-10-09 11:39:41 +0800292 DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
Chris Wilsonf899fc62010-07-20 15:44:45 -0700293 if (bus_pin >= 1 && bus_pin <= 6)
Chris Wilson2896b532010-09-22 10:54:48 +0100294 dev_priv->crt_ddc_pin = bus_pin;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200295 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800296 DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200297 block_size);
298 }
299 }
300}
301
302static void
yakui_zhao9b9d1722009-05-31 17:17:17 +0800303parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
Chris Wilson44834a62010-08-19 16:09:23 +0100304 struct bdb_header *bdb)
yakui_zhao9b9d1722009-05-31 17:17:17 +0800305{
306 struct sdvo_device_mapping *p_mapping;
307 struct bdb_general_definitions *p_defs;
308 struct child_device_config *p_child;
309 int i, child_device_num, count;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200310 u16 block_size;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800311
312 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
313 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100314 DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800315 return;
316 }
317 /* judge whether the size of child device meets the requirements.
318 * If the child device size obtained from general definition block
319 * is different with sizeof(struct child_device_config), skip the
320 * parsing of sdvo device info
321 */
322 if (p_defs->child_dev_size != sizeof(*p_child)) {
323 /* different child dev size . Ignore it */
Zhao Yakui28c97732009-10-09 11:39:41 +0800324 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800325 return;
326 }
327 /* get the block size of general definitions */
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200328 block_size = get_blocksize(p_defs);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800329 /* get the number of child device */
330 child_device_num = (block_size - sizeof(*p_defs)) /
331 sizeof(*p_child);
332 count = 0;
333 for (i = 0; i < child_device_num; i++) {
334 p_child = &(p_defs->devices[i]);
335 if (!p_child->device_type) {
336 /* skip the device block if device type is invalid */
337 continue;
338 }
339 if (p_child->slave_addr != SLAVE_ADDR1 &&
340 p_child->slave_addr != SLAVE_ADDR2) {
341 /*
342 * If the slave address is neither 0x70 nor 0x72,
343 * it is not a SDVO device. Skip it.
344 */
345 continue;
346 }
347 if (p_child->dvo_port != DEVICE_PORT_DVOB &&
348 p_child->dvo_port != DEVICE_PORT_DVOC) {
349 /* skip the incorrect SDVO port */
Zhao Yakui28c97732009-10-09 11:39:41 +0800350 DRM_DEBUG_KMS("Incorrect SDVO port. Skip it \n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800351 continue;
352 }
Zhao Yakui28c97732009-10-09 11:39:41 +0800353 DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
354 " %s port\n",
yakui_zhao9b9d1722009-05-31 17:17:17 +0800355 p_child->slave_addr,
356 (p_child->dvo_port == DEVICE_PORT_DVOB) ?
357 "SDVOB" : "SDVOC");
358 p_mapping = &(dev_priv->sdvo_mappings[p_child->dvo_port - 1]);
359 if (!p_mapping->initialized) {
360 p_mapping->dvo_port = p_child->dvo_port;
361 p_mapping->slave_addr = p_child->slave_addr;
362 p_mapping->dvo_wiring = p_child->dvo_wiring;
Adam Jacksonb1083332010-04-23 16:07:40 -0400363 p_mapping->ddc_pin = p_child->ddc_pin;
Chris Wilsone957d772010-09-24 12:52:03 +0100364 p_mapping->i2c_pin = p_child->i2c_pin;
365 p_mapping->i2c_speed = p_child->i2c_speed;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800366 p_mapping->initialized = 1;
Chris Wilsone957d772010-09-24 12:52:03 +0100367 DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d, i2c_speed=%d\n",
368 p_mapping->dvo_port,
369 p_mapping->slave_addr,
370 p_mapping->dvo_wiring,
371 p_mapping->ddc_pin,
372 p_mapping->i2c_pin,
373 p_mapping->i2c_speed);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800374 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800375 DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
yakui_zhao9b9d1722009-05-31 17:17:17 +0800376 "two SDVO device.\n");
377 }
378 if (p_child->slave2_addr) {
379 /* Maybe this is a SDVO device with multiple inputs */
380 /* And the mapping info is not added */
Zhao Yakui28c97732009-10-09 11:39:41 +0800381 DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
382 " is a SDVO device with multiple inputs.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800383 }
384 count++;
385 }
386
387 if (!count) {
388 /* No SDVO device info is found */
Zhao Yakui28c97732009-10-09 11:39:41 +0800389 DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800390 }
391 return;
392}
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800393
394static void
395parse_driver_features(struct drm_i915_private *dev_priv,
396 struct bdb_header *bdb)
397{
398 struct drm_device *dev = dev_priv->dev;
399 struct bdb_driver_features *driver;
400
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800401 driver = find_section(bdb, BDB_DRIVER_FEATURES);
Jesse Barnes652c3932009-08-17 13:31:43 -0700402 if (!driver)
403 return;
404
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100405 if (SUPPORTS_EDP(dev) &&
406 driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
407 dev_priv->edp.support = 1;
Jesse Barnes652c3932009-08-17 13:31:43 -0700408
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100409 if (driver->dual_frequency)
Jesse Barnes652c3932009-08-17 13:31:43 -0700410 dev_priv->render_reclock_avail = true;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800411}
412
Zhao Yakui6363ee62009-11-24 09:48:44 +0800413static void
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800414parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
415{
416 struct bdb_edp *edp;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700417 struct edp_power_seq *edp_pps;
418 struct edp_link_params *edp_link_params;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800419
420 edp = find_section(bdb, BDB_EDP);
421 if (!edp) {
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100422 if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp.support) {
Joe Perches76e47c32010-03-11 14:01:38 -0800423 DRM_DEBUG_KMS("No eDP BDB found but eDP panel "
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100424 "supported, assume %dbpp panel color "
425 "depth.\n",
426 dev_priv->edp.bpp);
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800427 }
428 return;
429 }
430
431 switch ((edp->color_depth >> (panel_type * 2)) & 3) {
432 case EDP_18BPP:
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100433 dev_priv->edp.bpp = 18;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800434 break;
435 case EDP_24BPP:
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100436 dev_priv->edp.bpp = 24;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800437 break;
438 case EDP_30BPP:
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100439 dev_priv->edp.bpp = 30;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800440 break;
441 }
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100442
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700443 /* Get the eDP sequencing and link info */
444 edp_pps = &edp->power_seqs[panel_type];
445 edp_link_params = &edp->link_params[panel_type];
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100446
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700447 dev_priv->edp.pps = *edp_pps;
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100448
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700449 dev_priv->edp.rate = edp_link_params->rate ? DP_LINK_BW_2_7 :
450 DP_LINK_BW_1_62;
451 switch (edp_link_params->lanes) {
452 case 0:
453 dev_priv->edp.lanes = 1;
454 break;
455 case 1:
456 dev_priv->edp.lanes = 2;
457 break;
458 case 3:
459 default:
460 dev_priv->edp.lanes = 4;
461 break;
462 }
463 switch (edp_link_params->preemphasis) {
464 case 0:
465 dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_0;
466 break;
467 case 1:
468 dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5;
469 break;
470 case 2:
471 dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_6;
472 break;
473 case 3:
474 dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5;
475 break;
476 }
477 switch (edp_link_params->vswing) {
478 case 0:
479 dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_400;
480 break;
481 case 1:
482 dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_600;
483 break;
484 case 2:
485 dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_800;
486 break;
487 case 3:
488 dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_1200;
489 break;
490 }
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800491}
492
493static void
Zhao Yakui6363ee62009-11-24 09:48:44 +0800494parse_device_mapping(struct drm_i915_private *dev_priv,
495 struct bdb_header *bdb)
496{
497 struct bdb_general_definitions *p_defs;
498 struct child_device_config *p_child, *child_dev_ptr;
499 int i, child_device_num, count;
500 u16 block_size;
501
502 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
503 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100504 DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +0800505 return;
506 }
507 /* judge whether the size of child device meets the requirements.
508 * If the child device size obtained from general definition block
509 * is different with sizeof(struct child_device_config), skip the
510 * parsing of sdvo device info
511 */
512 if (p_defs->child_dev_size != sizeof(*p_child)) {
513 /* different child dev size . Ignore it */
514 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
515 return;
516 }
517 /* get the block size of general definitions */
518 block_size = get_blocksize(p_defs);
519 /* get the number of child device */
520 child_device_num = (block_size - sizeof(*p_defs)) /
521 sizeof(*p_child);
522 count = 0;
523 /* get the number of child device that is present */
524 for (i = 0; i < child_device_num; i++) {
525 p_child = &(p_defs->devices[i]);
526 if (!p_child->device_type) {
527 /* skip the device block if device type is invalid */
528 continue;
529 }
530 count++;
531 }
532 if (!count) {
533 DRM_DEBUG_KMS("no child dev is parsed from VBT \n");
534 return;
535 }
536 dev_priv->child_dev = kzalloc(sizeof(*p_child) * count, GFP_KERNEL);
537 if (!dev_priv->child_dev) {
538 DRM_DEBUG_KMS("No memory space for child device\n");
539 return;
540 }
541
542 dev_priv->child_dev_num = count;
543 count = 0;
544 for (i = 0; i < child_device_num; i++) {
545 p_child = &(p_defs->devices[i]);
546 if (!p_child->device_type) {
547 /* skip the device block if device type is invalid */
548 continue;
549 }
550 child_dev_ptr = dev_priv->child_dev + count;
551 count++;
552 memcpy((void *)child_dev_ptr, (void *)p_child,
553 sizeof(*p_child));
554 }
555 return;
556}
Chris Wilson44834a62010-08-19 16:09:23 +0100557
Simon Que6a040022010-09-30 09:36:39 +0100558static void
559init_vbt_defaults(struct drm_i915_private *dev_priv)
560{
561 dev_priv->crt_ddc_pin = GMBUS_PORT_VGADDC;
562
563 /* LFP panel data */
564 dev_priv->lvds_dither = 1;
565 dev_priv->lvds_vbt = 0;
566
567 /* SDVO panel data */
568 dev_priv->sdvo_lvds_vbt_mode = NULL;
569
570 /* general features */
571 dev_priv->int_tv_support = 1;
572 dev_priv->int_crt_support = 1;
573 dev_priv->lvds_use_ssc = 0;
574
575 /* eDP data */
576 dev_priv->edp.bpp = 18;
577}
578
Jesse Barnes79e53942008-11-07 14:24:08 -0800579/**
Bryan Freed6d139a82010-10-14 09:14:51 +0100580 * intel_parse_bios - find VBT and initialize settings from the BIOS
Jesse Barnes79e53942008-11-07 14:24:08 -0800581 * @dev: DRM device
582 *
583 * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers
584 * to appropriate values.
585 *
Jesse Barnes79e53942008-11-07 14:24:08 -0800586 * Returns 0 on success, nonzero on failure.
587 */
588bool
Bryan Freed6d139a82010-10-14 09:14:51 +0100589intel_parse_bios(struct drm_device *dev)
Jesse Barnes79e53942008-11-07 14:24:08 -0800590{
591 struct drm_i915_private *dev_priv = dev->dev_private;
592 struct pci_dev *pdev = dev->pdev;
Chris Wilson44834a62010-08-19 16:09:23 +0100593 struct bdb_header *bdb = NULL;
594 u8 __iomem *bios = NULL;
Jesse Barnes79e53942008-11-07 14:24:08 -0800595
Simon Que6a040022010-09-30 09:36:39 +0100596 init_vbt_defaults(dev_priv);
Chris Wilsonf899fc62010-07-20 15:44:45 -0700597
Chris Wilson44834a62010-08-19 16:09:23 +0100598 /* XXX Should this validation be moved to intel_opregion.c? */
599 if (dev_priv->opregion.vbt) {
600 struct vbt_header *vbt = dev_priv->opregion.vbt;
601 if (memcmp(vbt->signature, "$VBT", 4) == 0) {
602 DRM_DEBUG_DRIVER("Using VBT from OpRegion: %20s\n",
603 vbt->signature);
604 bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
605 } else
606 dev_priv->opregion.vbt = NULL;
607 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800608
Chris Wilson44834a62010-08-19 16:09:23 +0100609 if (bdb == NULL) {
610 struct vbt_header *vbt = NULL;
611 size_t size;
612 int i;
613
614 bios = pci_map_rom(pdev, &size);
615 if (!bios)
616 return -1;
617
618 /* Scour memory looking for the VBT signature */
619 for (i = 0; i + 4 < size; i++) {
620 if (!memcmp(bios + i, "$VBT", 4)) {
621 vbt = (struct vbt_header *)(bios + i);
622 break;
623 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800624 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800625
Chris Wilson44834a62010-08-19 16:09:23 +0100626 if (!vbt) {
627 DRM_ERROR("VBT signature missing\n");
628 pci_unmap_rom(pdev, bios);
629 return -1;
630 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800631
Chris Wilson44834a62010-08-19 16:09:23 +0100632 bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
633 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800634
635 /* Grab useful general definitions */
636 parse_general_features(dev_priv, bdb);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200637 parse_general_definitions(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +0800638 parse_lfp_panel_data(dev_priv, bdb);
639 parse_sdvo_panel_data(dev_priv, bdb);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800640 parse_sdvo_device_mapping(dev_priv, bdb);
Zhao Yakui6363ee62009-11-24 09:48:44 +0800641 parse_device_mapping(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800642 parse_driver_features(dev_priv, bdb);
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800643 parse_edp(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800644
Chris Wilson44834a62010-08-19 16:09:23 +0100645 if (bios)
646 pci_unmap_rom(pdev, bios);
Jesse Barnes79e53942008-11-07 14:24:08 -0800647
648 return 0;
649}
Bryan Freed6d139a82010-10-14 09:14:51 +0100650
651/* Ensure that vital registers have been initialised, even if the BIOS
652 * is absent or just failing to do its job.
653 */
654void intel_setup_bios(struct drm_device *dev)
655{
656 struct drm_i915_private *dev_priv = dev->dev_private;
657
658 /* Set the Panel Power On/Off timings if uninitialized. */
659 if ((I915_READ(PP_ON_DELAYS) == 0) && (I915_READ(PP_OFF_DELAYS) == 0)) {
660 /* Set T2 to 40ms and T5 to 200ms */
661 I915_WRITE(PP_ON_DELAYS, 0x019007d0);
662
663 /* Set T3 to 35ms and Tx to 200ms */
664 I915_WRITE(PP_OFF_DELAYS, 0x015e07d0);
665 }
666}