blob: 1ee98f121a00fbe4be26cf60187d9b7a81983caf [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 */
Chris Wilsond1f13fd2014-04-18 18:04:23 -030052 while (index + 3 < total) {
Jesse Barnes79e53942008-11-07 14:24:08 -080053 current_id = *(base + index);
54 index++;
Chris Wilsond1f13fd2014-04-18 18:04:23 -030055
Jesse Barnes79e53942008-11-07 14:24:08 -080056 current_size = *((u16 *)(base + index));
57 index += 2;
Chris Wilsond1f13fd2014-04-18 18:04:23 -030058
59 if (index + current_size > total)
60 return NULL;
61
Jesse Barnes79e53942008-11-07 14:24:08 -080062 if (current_id == section_id)
63 return base + index;
Chris Wilsond1f13fd2014-04-18 18:04:23 -030064
Jesse Barnes79e53942008-11-07 14:24:08 -080065 index += current_size;
66 }
67
68 return NULL;
69}
70
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +020071static u16
72get_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
Jesse Barnes79e53942008-11-07 14:24:08 -080081static void
Ma Ling88631702009-05-13 11:19:55 +080082fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
Chris Wilson99834ea2011-07-13 21:01:46 +010083 const struct lvds_dvo_timing *dvo_timing)
Ma Ling88631702009-05-13 11:19:55 +080084{
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
Adam Jackson9bc35492010-05-28 17:17:37 -0400105 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
Ma Ling88631702009-05-13 11:19:55 +0800115 /* 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
Chris Wilson99834ea2011-07-13 21:01:46 +0100124static bool
125lvds_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
160static const struct lvds_dvo_timing *
161get_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
Takashi Iwaib0354382012-03-20 13:07:05 +0100182/* get lvds_fp_timing entry
183 * this function may return NULL if the corresponding entry is invalid
184 */
185static const struct lvds_fp_timing *
186get_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
Ma Ling88631702009-05-13 11:19:55 +0800204/* Try to find integrated panel data */
205static void
206parse_lfp_panel_data(struct drm_i915_private *dev_priv,
207 struct bdb_header *bdb)
Jesse Barnes79e53942008-11-07 14:24:08 -0800208{
Chris Wilson99834ea2011-07-13 21:01:46 +0100209 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;
Takashi Iwaib0354382012-03-20 13:07:05 +0100213 const struct lvds_fp_timing *fp_timing;
Jesse Barnes79e53942008-11-07 14:24:08 -0800214 struct drm_display_mode *panel_fixed_mode;
Pradeep Bhat83a72802014-03-28 10:14:57 +0530215 int i, downclock, drrs_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800216
Jesse Barnes79e53942008-11-07 14:24:08 -0800217 lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
218 if (!lvds_options)
219 return;
220
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300221 dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
Jesse Barnes79e53942008-11-07 14:24:08 -0800222 if (lvds_options->panel_type == 0xff)
223 return;
Simon Que6a040022010-09-30 09:36:39 +0100224
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800225 panel_type = lvds_options->panel_type;
Jesse Barnes79e53942008-11-07 14:24:08 -0800226
Pradeep Bhat83a72802014-03-28 10:14:57 +0530227 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
Jesse Barnes79e53942008-11-07 14:24:08 -0800249 lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
250 if (!lvds_lfp_data)
251 return;
252
Jesse Barnes1b16de02009-06-22 11:30:30 -0700253 lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
254 if (!lvds_lfp_data_ptrs)
255 return;
256
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300257 dev_priv->vbt.lvds_vbt = 1;
Jesse Barnes79e53942008-11-07 14:24:08 -0800258
Chris Wilson99834ea2011-07-13 21:01:46 +0100259 panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
260 lvds_lfp_data_ptrs,
261 lvds_options->panel_type);
Jesse Barnes79e53942008-11-07 14:24:08 -0800262
Eric Anholt9a298b22009-03-24 12:23:04 -0700263 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Chris Wilson6edc3242010-09-12 17:16:17 +0100264 if (!panel_fixed_mode)
265 return;
Jesse Barnes79e53942008-11-07 14:24:08 -0800266
Chris Wilson99834ea2011-07-13 21:01:46 +0100267 fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
Jesse Barnes79e53942008-11-07 14:24:08 -0800268
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300269 dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800270
Zhao Yakui28c97732009-10-09 11:39:41 +0800271 DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800272 drm_mode_debug_printmodeline(panel_fixed_mode);
273
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800274 /*
Chris Wilson99834ea2011-07-13 21:01:46 +0100275 * Iterate over the LVDS panel timing info to find the lowest clock
276 * for the native resolution.
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800277 */
Chris Wilson99834ea2011-07-13 21:01:46 +0100278 downclock = panel_dvo_timing->clock;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800279 for (i = 0; i < 16; i++) {
Chris Wilson99834ea2011-07-13 21:01:46 +0100280 const struct lvds_dvo_timing *dvo_timing;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800281
Chris Wilson99834ea2011-07-13 21:01:46 +0100282 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;
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800288 }
Chris Wilson99834ea2011-07-13 21:01:46 +0100289
Jani Nikulad330a952014-01-21 11:24:25 +0200290 if (downclock < panel_dvo_timing->clock && i915.lvds_downclock) {
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800291 dev_priv->lvds_downclock_avail = 1;
Chris Wilson99834ea2011-07-13 21:01:46 +0100292 dev_priv->lvds_downclock = downclock * 10;
Joe Perchesbbb0aef52011-04-17 20:35:52 -0700293 DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
294 "Normal Clock %dKHz, downclock %dKHz\n",
Chris Wilson99834ea2011-07-13 21:01:46 +0100295 panel_fixed_mode->clock, 10*downclock);
Zhao Yakuid1fcea6a2009-11-20 11:24:17 +0800296 }
Takashi Iwaib0354382012-03-20 13:07:05 +0100297
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) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300305 dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
Takashi Iwaib0354382012-03-20 13:07:05 +0100306 DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300307 dev_priv->vbt.bios_lvds_val);
Takashi Iwaib0354382012-03-20 13:07:05 +0100308 }
309 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800310}
311
Jani Nikulaf00076d2013-12-14 20:38:29 -0200312static void
313parse_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
Jani Nikula39fbc9c2014-04-09 11:22:06 +0300318 /* Err to enabling backlight if no backlight block. */
319 dev_priv->vbt.backlight.present = true;
320
Jani Nikulaf00076d2013-12-14 20:38:29 -0200321 backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT);
322 if (!backlight_data)
323 return;
324
325 if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
326 DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n",
327 backlight_data->entry_size);
328 return;
329 }
330
331 entry = &backlight_data->data[panel_type];
332
Jani Nikula39fbc9c2014-04-09 11:22:06 +0300333 dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
334 if (!dev_priv->vbt.backlight.present) {
335 DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n",
336 entry->type);
337 return;
338 }
339
Jani Nikulaf00076d2013-12-14 20:38:29 -0200340 dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
341 dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm;
342 DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
343 "active %s, min brightness %u, level %u\n",
344 dev_priv->vbt.backlight.pwm_freq_hz,
345 dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
346 entry->min_brightness,
347 backlight_data->level[panel_type]);
348}
349
Ma Ling88631702009-05-13 11:19:55 +0800350/* Try to find sdvo panel data */
351static void
352parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
353 struct bdb_header *bdb)
354{
Ma Ling88631702009-05-13 11:19:55 +0800355 struct lvds_dvo_timing *dvo_timing;
356 struct drm_display_mode *panel_fixed_mode;
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000357 int index;
Ma Ling88631702009-05-13 11:19:55 +0800358
Jani Nikulad330a952014-01-21 11:24:25 +0200359 index = i915.vbt_sdvo_panel_type;
Mathias Fröhlichc10e4082012-03-01 06:44:35 +0100360 if (index == -2) {
361 DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
362 return;
363 }
364
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000365 if (index == -1) {
366 struct bdb_sdvo_lvds_options *sdvo_lvds_options;
367
368 sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
369 if (!sdvo_lvds_options)
370 return;
371
372 index = sdvo_lvds_options->panel_type;
373 }
Ma Ling88631702009-05-13 11:19:55 +0800374
375 dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
376 if (!dvo_timing)
377 return;
378
Eric Anholt9a298b22009-03-24 12:23:04 -0700379 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Ma Ling88631702009-05-13 11:19:55 +0800380 if (!panel_fixed_mode)
381 return;
382
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000383 fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
Ma Ling88631702009-05-13 11:19:55 +0800384
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300385 dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
Ma Ling88631702009-05-13 11:19:55 +0800386
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000387 DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
388 drm_mode_debug_printmodeline(panel_fixed_mode);
Ma Ling88631702009-05-13 11:19:55 +0800389}
390
Bryan Freed9a4114f2011-01-12 13:38:39 -0800391static int intel_bios_ssc_frequency(struct drm_device *dev,
392 bool alternate)
393{
394 switch (INTEL_INFO(dev)->gen) {
395 case 2:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200396 return alternate ? 66667 : 48000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800397 case 3:
398 case 4:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200399 return alternate ? 100000 : 96000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800400 default:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200401 return alternate ? 100000 : 120000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800402 }
403}
404
Jesse Barnes79e53942008-11-07 14:24:08 -0800405static void
406parse_general_features(struct drm_i915_private *dev_priv,
407 struct bdb_header *bdb)
408{
Eric Anholtbad720f2009-10-22 16:11:14 -0700409 struct drm_device *dev = dev_priv->dev;
Jesse Barnes79e53942008-11-07 14:24:08 -0800410 struct bdb_general_features *general;
411
Jesse Barnes79e53942008-11-07 14:24:08 -0800412 general = find_section(bdb, BDB_GENERAL_FEATURES);
413 if (general) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300414 dev_priv->vbt.int_tv_support = general->int_tv_support;
415 dev_priv->vbt.int_crt_support = general->int_crt_support;
416 dev_priv->vbt.lvds_use_ssc = general->enable_ssc;
417 dev_priv->vbt.lvds_ssc_freq =
Bryan Freed9a4114f2011-01-12 13:38:39 -0800418 intel_bios_ssc_frequency(dev, general->ssc_freq);
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300419 dev_priv->vbt.display_clock_mode = general->display_clock_mode;
420 dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
Paulo Zanoni3f704fa2013-04-08 15:48:07 -0300421 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 -0300422 dev_priv->vbt.int_tv_support,
423 dev_priv->vbt.int_crt_support,
424 dev_priv->vbt.lvds_use_ssc,
425 dev_priv->vbt.lvds_ssc_freq,
426 dev_priv->vbt.display_clock_mode,
427 dev_priv->vbt.fdi_rx_polarity_inverted);
Jesse Barnes79e53942008-11-07 14:24:08 -0800428 }
429}
430
yakui_zhao9b9d1722009-05-31 17:17:17 +0800431static void
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200432parse_general_definitions(struct drm_i915_private *dev_priv,
433 struct bdb_header *bdb)
434{
435 struct bdb_general_definitions *general;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200436
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200437 general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
438 if (general) {
439 u16 block_size = get_blocksize(general);
440 if (block_size >= sizeof(*general)) {
441 int bus_pin = general->crt_ddc_gmbus_pin;
Zhao Yakui28c97732009-10-09 11:39:41 +0800442 DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800443 if (intel_gmbus_is_port_valid(bus_pin))
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300444 dev_priv->vbt.crt_ddc_pin = bus_pin;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200445 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800446 DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800447 block_size);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200448 }
449 }
450}
451
452static void
yakui_zhao9b9d1722009-05-31 17:17:17 +0800453parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
Chris Wilson44834a62010-08-19 16:09:23 +0100454 struct bdb_header *bdb)
yakui_zhao9b9d1722009-05-31 17:17:17 +0800455{
456 struct sdvo_device_mapping *p_mapping;
457 struct bdb_general_definitions *p_defs;
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300458 union child_device_config *p_child;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800459 int i, child_device_num, count;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200460 u16 block_size;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800461
462 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
463 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100464 DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800465 return;
466 }
467 /* judge whether the size of child device meets the requirements.
468 * If the child device size obtained from general definition block
469 * is different with sizeof(struct child_device_config), skip the
470 * parsing of sdvo device info
471 */
472 if (p_defs->child_dev_size != sizeof(*p_child)) {
473 /* different child dev size . Ignore it */
Zhao Yakui28c97732009-10-09 11:39:41 +0800474 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800475 return;
476 }
477 /* get the block size of general definitions */
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200478 block_size = get_blocksize(p_defs);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800479 /* get the number of child device */
480 child_device_num = (block_size - sizeof(*p_defs)) /
481 sizeof(*p_child);
482 count = 0;
483 for (i = 0; i < child_device_num; i++) {
484 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300485 if (!p_child->old.device_type) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800486 /* skip the device block if device type is invalid */
487 continue;
488 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300489 if (p_child->old.slave_addr != SLAVE_ADDR1 &&
490 p_child->old.slave_addr != SLAVE_ADDR2) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800491 /*
492 * If the slave address is neither 0x70 nor 0x72,
493 * it is not a SDVO device. Skip it.
494 */
495 continue;
496 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300497 if (p_child->old.dvo_port != DEVICE_PORT_DVOB &&
498 p_child->old.dvo_port != DEVICE_PORT_DVOC) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800499 /* skip the incorrect SDVO port */
Akshay Joshi0206e352011-08-16 15:34:10 -0400500 DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800501 continue;
502 }
Zhao Yakui28c97732009-10-09 11:39:41 +0800503 DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
504 " %s port\n",
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300505 p_child->old.slave_addr,
506 (p_child->old.dvo_port == DEVICE_PORT_DVOB) ?
yakui_zhao9b9d1722009-05-31 17:17:17 +0800507 "SDVOB" : "SDVOC");
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300508 p_mapping = &(dev_priv->sdvo_mappings[p_child->old.dvo_port - 1]);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800509 if (!p_mapping->initialized) {
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300510 p_mapping->dvo_port = p_child->old.dvo_port;
511 p_mapping->slave_addr = p_child->old.slave_addr;
512 p_mapping->dvo_wiring = p_child->old.dvo_wiring;
513 p_mapping->ddc_pin = p_child->old.ddc_pin;
514 p_mapping->i2c_pin = p_child->old.i2c_pin;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800515 p_mapping->initialized = 1;
Adam Jackson46eb3032011-06-16 16:36:23 -0400516 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 +0100517 p_mapping->dvo_port,
518 p_mapping->slave_addr,
519 p_mapping->dvo_wiring,
520 p_mapping->ddc_pin,
Adam Jackson46eb3032011-06-16 16:36:23 -0400521 p_mapping->i2c_pin);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800522 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800523 DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
yakui_zhao9b9d1722009-05-31 17:17:17 +0800524 "two SDVO device.\n");
525 }
Paulo Zanoni768f69c2013-09-11 18:02:47 -0300526 if (p_child->old.slave2_addr) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800527 /* Maybe this is a SDVO device with multiple inputs */
528 /* And the mapping info is not added */
Zhao Yakui28c97732009-10-09 11:39:41 +0800529 DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
530 " is a SDVO device with multiple inputs.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800531 }
532 count++;
533 }
534
535 if (!count) {
536 /* No SDVO device info is found */
Zhao Yakui28c97732009-10-09 11:39:41 +0800537 DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800538 }
539 return;
540}
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800541
542static void
543parse_driver_features(struct drm_i915_private *dev_priv,
544 struct bdb_header *bdb)
545{
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800546 struct bdb_driver_features *driver;
547
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800548 driver = find_section(bdb, BDB_DRIVER_FEATURES);
Jesse Barnes652c3932009-08-17 13:31:43 -0700549 if (!driver)
550 return;
551
Daniel Vetter6fca55b2013-09-21 00:48:39 +0200552 if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300553 dev_priv->vbt.edp_support = 1;
Jesse Barnes652c3932009-08-17 13:31:43 -0700554
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100555 if (driver->dual_frequency)
Jesse Barnes652c3932009-08-17 13:31:43 -0700556 dev_priv->render_reclock_avail = true;
Pradeep Bhat83a72802014-03-28 10:14:57 +0530557
558 DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
559 /*
560 * If DRRS is not supported, drrs_type has to be set to 0.
561 * This is because, VBT is configured in such a way that
562 * static DRRS is 0 and DRRS not supported is represented by
563 * driver->drrs_enabled=false
564 */
565 if (!driver->drrs_enabled)
566 dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800567}
568
Zhao Yakui6363ee62009-11-24 09:48:44 +0800569static void
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800570parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
571{
572 struct bdb_edp *edp;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700573 struct edp_power_seq *edp_pps;
574 struct edp_link_params *edp_link_params;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800575
576 edp = find_section(bdb, BDB_EDP);
577 if (!edp) {
Daniel Vetter6fca55b2013-09-21 00:48:39 +0200578 if (dev_priv->vbt.edp_support)
Jani Nikula9a30a612012-11-12 14:33:45 +0200579 DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800580 return;
581 }
582
583 switch ((edp->color_depth >> (panel_type * 2)) & 3) {
584 case EDP_18BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300585 dev_priv->vbt.edp_bpp = 18;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800586 break;
587 case EDP_24BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300588 dev_priv->vbt.edp_bpp = 24;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800589 break;
590 case EDP_30BPP:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300591 dev_priv->vbt.edp_bpp = 30;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800592 break;
593 }
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100594
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700595 /* Get the eDP sequencing and link info */
596 edp_pps = &edp->power_seqs[panel_type];
597 edp_link_params = &edp->link_params[panel_type];
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100598
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300599 dev_priv->vbt.edp_pps = *edp_pps;
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100600
Jani Nikulae13e2b22014-05-06 14:56:51 +0300601 switch (edp_link_params->rate) {
602 case EDP_RATE_1_62:
603 dev_priv->vbt.edp_rate = DP_LINK_BW_1_62;
604 break;
605 case EDP_RATE_2_7:
606 dev_priv->vbt.edp_rate = DP_LINK_BW_2_7;
607 break;
608 default:
609 DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n",
610 edp_link_params->rate);
611 break;
612 }
613
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700614 switch (edp_link_params->lanes) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300615 case EDP_LANE_1:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300616 dev_priv->vbt.edp_lanes = 1;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700617 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300618 case EDP_LANE_2:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300619 dev_priv->vbt.edp_lanes = 2;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700620 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300621 case EDP_LANE_4:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300622 dev_priv->vbt.edp_lanes = 4;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700623 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300624 default:
625 DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n",
626 edp_link_params->lanes);
627 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700628 }
Jani Nikulae13e2b22014-05-06 14:56:51 +0300629
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700630 switch (edp_link_params->preemphasis) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300631 case EDP_PREEMPHASIS_NONE:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300632 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_0;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700633 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300634 case EDP_PREEMPHASIS_3_5dB:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300635 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700636 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300637 case EDP_PREEMPHASIS_6dB:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300638 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_6;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700639 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300640 case EDP_PREEMPHASIS_9_5dB:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300641 dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700642 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300643 default:
644 DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n",
645 edp_link_params->preemphasis);
646 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700647 }
Jani Nikulae13e2b22014-05-06 14:56:51 +0300648
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700649 switch (edp_link_params->vswing) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300650 case EDP_VSWING_0_4V:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300651 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_400;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700652 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300653 case EDP_VSWING_0_6V:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300654 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_600;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700655 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300656 case EDP_VSWING_0_8V:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300657 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_800;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700658 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300659 case EDP_VSWING_1_2V:
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300660 dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_1200;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700661 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300662 default:
663 DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n",
664 edp_link_params->vswing);
665 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700666 }
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800667}
668
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530669static u8 *goto_next_sequence(u8 *data, int *size)
670{
671 u16 len;
672 int tmp = *size;
673
674 if (--tmp < 0)
675 return NULL;
676
677 /* goto first element */
678 data++;
679 while (1) {
680 switch (*data) {
681 case MIPI_SEQ_ELEM_SEND_PKT:
682 /*
683 * skip by this element payload size
684 * skip elem id, command flag and data type
685 */
Shobhit Kumarb0256cd2014-04-15 13:54:07 +0530686 tmp -= 5;
687 if (tmp < 0)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530688 return NULL;
689
690 data += 3;
691 len = *((u16 *)data);
692
Shobhit Kumarb0256cd2014-04-15 13:54:07 +0530693 tmp -= len;
694 if (tmp < 0)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530695 return NULL;
696
697 /* skip by len */
698 data = data + 2 + len;
699 break;
700 case MIPI_SEQ_ELEM_DELAY:
701 /* skip by elem id, and delay is 4 bytes */
Shobhit Kumarb0256cd2014-04-15 13:54:07 +0530702 tmp -= 5;
703 if (tmp < 0)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530704 return NULL;
705
706 data += 5;
707 break;
708 case MIPI_SEQ_ELEM_GPIO:
Shobhit Kumarb0256cd2014-04-15 13:54:07 +0530709 tmp -= 3;
710 if (tmp < 0)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530711 return NULL;
712
713 data += 3;
714 break;
715 default:
716 DRM_ERROR("Unknown element\n");
717 return NULL;
718 }
719
720 /* end of sequence ? */
721 if (*data == 0)
722 break;
723 }
724
725 /* goto next sequence or end of block byte */
726 if (--tmp < 0)
727 return NULL;
728
729 data++;
730
731 /* update amount of data left for the sequence block to be parsed */
732 *size = tmp;
733 return data;
734}
735
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800736static void
Shobhit Kumard17c5442013-08-27 15:12:25 +0300737parse_mipi(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
738{
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530739 struct bdb_mipi_config *start;
740 struct bdb_mipi_sequence *sequence;
741 struct mipi_config *config;
742 struct mipi_pps_data *pps;
743 u8 *data, *seq_data;
744 int i, panel_id, seq_size;
745 u16 block_size;
Shobhit Kumard17c5442013-08-27 15:12:25 +0300746
Shobhit Kumar3e6bd012014-05-27 19:33:59 +0530747 /* parse MIPI blocks only if LFP type is MIPI */
748 if (!dev_priv->vbt.has_mipi)
749 return;
750
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530751 /* Initialize this to undefined indicating no generic MIPI support */
752 dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
753
754 /* Block #40 is already parsed and panel_fixed_mode is
755 * stored in dev_priv->lfp_lvds_vbt_mode
756 * resuse this when needed
757 */
758
759 /* Parse #52 for panel index used from panel_type already
760 * parsed
761 */
762 start = find_section(bdb, BDB_MIPI_CONFIG);
763 if (!start) {
764 DRM_DEBUG_KMS("No MIPI config BDB found");
Shobhit Kumard17c5442013-08-27 15:12:25 +0300765 return;
766 }
767
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530768 DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n",
769 panel_type);
770
771 /*
772 * get hold of the correct configuration block and pps data as per
773 * the panel_type as index
774 */
775 config = &start->config[panel_type];
776 pps = &start->pps[panel_type];
777
778 /* store as of now full data. Trim when we realise all is not needed */
779 dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
780 if (!dev_priv->vbt.dsi.config)
781 return;
782
783 dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
784 if (!dev_priv->vbt.dsi.pps) {
785 kfree(dev_priv->vbt.dsi.config);
786 return;
787 }
788
789 /* We have mandatory mipi config blocks. Initialize as generic panel */
Shobhit Kumarea9a6ba2014-02-28 11:18:46 +0530790 dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530791
792 /* Check if we have sequence block as well */
793 sequence = find_section(bdb, BDB_MIPI_SEQUENCE);
794 if (!sequence) {
795 DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n");
796 return;
797 }
798
799 DRM_DEBUG_DRIVER("Found MIPI sequence block\n");
800
801 block_size = get_blocksize(sequence);
802
803 /*
804 * parse the sequence block for individual sequences
805 */
806 dev_priv->vbt.dsi.seq_version = sequence->version;
807
808 seq_data = &sequence->data[0];
809
810 /*
811 * sequence block is variable length and hence we need to parse and
812 * get the sequence data for specific panel id
813 */
814 for (i = 0; i < MAX_MIPI_CONFIGURATIONS; i++) {
815 panel_id = *seq_data;
816 seq_size = *((u16 *) (seq_data + 1));
817 if (panel_id == panel_type)
818 break;
819
820 /* skip the sequence including seq header of 3 bytes */
821 seq_data = seq_data + 3 + seq_size;
822 if ((seq_data - &sequence->data[0]) > block_size) {
823 DRM_ERROR("Sequence start is beyond sequence block size, corrupted sequence block\n");
824 return;
825 }
826 }
827
828 if (i == MAX_MIPI_CONFIGURATIONS) {
829 DRM_ERROR("Sequence block detected but no valid configuration\n");
830 return;
831 }
832
833 /* check if found sequence is completely within the sequence block
834 * just being paranoid */
835 if (seq_size > block_size) {
836 DRM_ERROR("Corrupted sequence/size, bailing out\n");
837 return;
838 }
839
840 /* skip the panel id(1 byte) and seq size(2 bytes) */
841 dev_priv->vbt.dsi.data = kmemdup(seq_data + 3, seq_size, GFP_KERNEL);
842 if (!dev_priv->vbt.dsi.data)
843 return;
844
845 /*
846 * loop into the sequence data and split into multiple sequneces
847 * There are only 5 types of sequences as of now
848 */
849 data = dev_priv->vbt.dsi.data;
850 dev_priv->vbt.dsi.size = seq_size;
851
852 /* two consecutive 0x00 indicate end of all sequences */
853 while (1) {
854 int seq_id = *data;
855 if (MIPI_SEQ_MAX > seq_id && seq_id > MIPI_SEQ_UNDEFINED) {
856 dev_priv->vbt.dsi.sequence[seq_id] = data;
857 DRM_DEBUG_DRIVER("Found mipi sequence - %d\n", seq_id);
858 } else {
859 DRM_ERROR("undefined sequence\n");
860 goto err;
861 }
862
863 /* partial parsing to skip elements */
864 data = goto_next_sequence(data, &seq_size);
865
866 if (data == NULL) {
867 DRM_ERROR("Sequence elements going beyond block itself. Sequence block parsing failed\n");
868 goto err;
869 }
870
871 if (*data == 0)
872 break; /* end of sequence reached */
873 }
874
875 DRM_DEBUG_DRIVER("MIPI related vbt parsing complete\n");
876 return;
877err:
878 kfree(dev_priv->vbt.dsi.data);
879 dev_priv->vbt.dsi.data = NULL;
880
881 /* error during parsing so set all pointers to null
882 * because of partial parsing */
883 memset(dev_priv->vbt.dsi.sequence, 0, MIPI_SEQ_MAX);
Shobhit Kumard17c5442013-08-27 15:12:25 +0300884}
885
Paulo Zanoni6acab152013-09-12 17:06:24 -0300886static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
887 struct bdb_header *bdb)
888{
889 union child_device_config *it, *child = NULL;
890 struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
891 uint8_t hdmi_level_shift;
892 int i, j;
Paulo Zanoni554d6af2013-09-12 17:10:11 -0300893 bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
Paulo Zanoni6bf19e72013-09-12 17:07:55 -0300894 uint8_t aux_channel;
Paulo Zanoni6acab152013-09-12 17:06:24 -0300895 /* Each DDI port can have more than one value on the "DVO Port" field,
896 * so look for all the possible values for each port and abort if more
897 * than one is found. */
898 int dvo_ports[][2] = {
899 {DVO_PORT_HDMIA, DVO_PORT_DPA},
900 {DVO_PORT_HDMIB, DVO_PORT_DPB},
901 {DVO_PORT_HDMIC, DVO_PORT_DPC},
902 {DVO_PORT_HDMID, DVO_PORT_DPD},
903 {DVO_PORT_CRT, -1 /* Port E can only be DVO_PORT_CRT */ },
904 };
905
906 /* Find the child device to use, abort if more than one found. */
907 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
908 it = dev_priv->vbt.child_dev + i;
909
910 for (j = 0; j < 2; j++) {
911 if (dvo_ports[port][j] == -1)
912 break;
913
914 if (it->common.dvo_port == dvo_ports[port][j]) {
915 if (child) {
916 DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n",
917 port_name(port));
918 return;
919 }
920 child = it;
921 }
922 }
923 }
924 if (!child)
925 return;
926
Paulo Zanoni6bf19e72013-09-12 17:07:55 -0300927 aux_channel = child->raw[25];
928
Ville Syrjälä78eb06c2013-11-01 20:32:07 +0200929 is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
930 is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
931 is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT;
932 is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
933 is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
Paulo Zanoni554d6af2013-09-12 17:10:11 -0300934
Paulo Zanoni311a2092013-09-12 17:12:18 -0300935 info->supports_dvi = is_dvi;
936 info->supports_hdmi = is_hdmi;
937 info->supports_dp = is_dp;
938
Paulo Zanoni554d6af2013-09-12 17:10:11 -0300939 DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n",
940 port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt);
941
942 if (is_edp && is_dvi)
943 DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n",
944 port_name(port));
945 if (is_crt && port != PORT_E)
946 DRM_DEBUG_KMS("Port %c is analog\n", port_name(port));
947 if (is_crt && (is_dvi || is_dp))
948 DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n",
949 port_name(port));
950 if (is_dvi && (port == PORT_A || port == PORT_E))
951 DRM_DEBUG_KMS("Port %c is TMDS compabile\n", port_name(port));
952 if (!is_dvi && !is_dp && !is_crt)
953 DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n",
954 port_name(port));
955 if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E))
956 DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
Paulo Zanoni6bf19e72013-09-12 17:07:55 -0300957
958 if (is_dvi) {
959 if (child->common.ddc_pin == 0x05 && port != PORT_B)
960 DRM_DEBUG_KMS("Unexpected DDC pin for port B\n");
961 if (child->common.ddc_pin == 0x04 && port != PORT_C)
962 DRM_DEBUG_KMS("Unexpected DDC pin for port C\n");
963 if (child->common.ddc_pin == 0x06 && port != PORT_D)
964 DRM_DEBUG_KMS("Unexpected DDC pin for port D\n");
965 }
966
967 if (is_dp) {
968 if (aux_channel == 0x40 && port != PORT_A)
969 DRM_DEBUG_KMS("Unexpected AUX channel for port A\n");
970 if (aux_channel == 0x10 && port != PORT_B)
971 DRM_DEBUG_KMS("Unexpected AUX channel for port B\n");
972 if (aux_channel == 0x20 && port != PORT_C)
973 DRM_DEBUG_KMS("Unexpected AUX channel for port C\n");
974 if (aux_channel == 0x30 && port != PORT_D)
975 DRM_DEBUG_KMS("Unexpected AUX channel for port D\n");
976 }
977
Paulo Zanoni6acab152013-09-12 17:06:24 -0300978 if (bdb->version >= 158) {
979 /* The VBT HDMI level shift values match the table we have. */
980 hdmi_level_shift = child->raw[7] & 0xF;
981 if (hdmi_level_shift < 0xC) {
982 DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
983 port_name(port),
984 hdmi_level_shift);
985 info->hdmi_level_shift = hdmi_level_shift;
986 }
987 }
988}
989
990static void parse_ddi_ports(struct drm_i915_private *dev_priv,
991 struct bdb_header *bdb)
992{
993 struct drm_device *dev = dev_priv->dev;
994 enum port port;
995
996 if (!HAS_DDI(dev))
997 return;
998
999 if (!dev_priv->vbt.child_dev_num)
1000 return;
1001
1002 if (bdb->version < 155)
1003 return;
1004
1005 for (port = PORT_A; port < I915_MAX_PORTS; port++)
1006 parse_ddi_port(dev_priv, port, bdb);
1007}
1008
Shobhit Kumard17c5442013-08-27 15:12:25 +03001009static void
Zhao Yakui6363ee62009-11-24 09:48:44 +08001010parse_device_mapping(struct drm_i915_private *dev_priv,
1011 struct bdb_header *bdb)
1012{
1013 struct bdb_general_definitions *p_defs;
Paulo Zanoni768f69c2013-09-11 18:02:47 -03001014 union child_device_config *p_child, *child_dev_ptr;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001015 int i, child_device_num, count;
1016 u16 block_size;
1017
1018 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
1019 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +01001020 DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +08001021 return;
1022 }
1023 /* judge whether the size of child device meets the requirements.
1024 * If the child device size obtained from general definition block
1025 * is different with sizeof(struct child_device_config), skip the
1026 * parsing of sdvo device info
1027 */
1028 if (p_defs->child_dev_size != sizeof(*p_child)) {
1029 /* different child dev size . Ignore it */
1030 DRM_DEBUG_KMS("different child size is found. Invalid.\n");
1031 return;
1032 }
1033 /* get the block size of general definitions */
1034 block_size = get_blocksize(p_defs);
1035 /* get the number of child device */
1036 child_device_num = (block_size - sizeof(*p_defs)) /
1037 sizeof(*p_child);
1038 count = 0;
1039 /* get the number of child device that is present */
1040 for (i = 0; i < child_device_num; i++) {
1041 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -03001042 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001043 /* skip the device block if device type is invalid */
1044 continue;
1045 }
1046 count++;
1047 }
1048 if (!count) {
Akshay Joshi0206e352011-08-16 15:34:10 -04001049 DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +08001050 return;
1051 }
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001052 dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL);
1053 if (!dev_priv->vbt.child_dev) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001054 DRM_DEBUG_KMS("No memory space for child device\n");
1055 return;
1056 }
1057
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001058 dev_priv->vbt.child_dev_num = count;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001059 count = 0;
1060 for (i = 0; i < child_device_num; i++) {
1061 p_child = &(p_defs->devices[i]);
Paulo Zanoni768f69c2013-09-11 18:02:47 -03001062 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001063 /* skip the device block if device type is invalid */
1064 continue;
1065 }
Shobhit Kumar3e6bd012014-05-27 19:33:59 +05301066
1067 if (p_child->common.dvo_port >= DVO_PORT_MIPIA
1068 && p_child->common.dvo_port <= DVO_PORT_MIPID
1069 &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) {
1070 DRM_DEBUG_KMS("Found MIPI as LFP\n");
1071 dev_priv->vbt.has_mipi = 1;
1072 dev_priv->vbt.dsi.port = p_child->common.dvo_port;
1073 }
1074
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001075 child_dev_ptr = dev_priv->vbt.child_dev + count;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001076 count++;
1077 memcpy((void *)child_dev_ptr, (void *)p_child,
1078 sizeof(*p_child));
1079 }
1080 return;
1081}
Chris Wilson44834a62010-08-19 16:09:23 +01001082
Simon Que6a040022010-09-30 09:36:39 +01001083static void
1084init_vbt_defaults(struct drm_i915_private *dev_priv)
1085{
Bryan Freed9a4114f2011-01-12 13:38:39 -08001086 struct drm_device *dev = dev_priv->dev;
Paulo Zanoni6acab152013-09-12 17:06:24 -03001087 enum port port;
Bryan Freed9a4114f2011-01-12 13:38:39 -08001088
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001089 dev_priv->vbt.crt_ddc_pin = GMBUS_PORT_VGADDC;
Simon Que6a040022010-09-30 09:36:39 +01001090
1091 /* LFP panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001092 dev_priv->vbt.lvds_dither = 1;
1093 dev_priv->vbt.lvds_vbt = 0;
Simon Que6a040022010-09-30 09:36:39 +01001094
1095 /* SDVO panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001096 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
Simon Que6a040022010-09-30 09:36:39 +01001097
1098 /* general features */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001099 dev_priv->vbt.int_tv_support = 1;
1100 dev_priv->vbt.int_crt_support = 1;
Bryan Freed9a4114f2011-01-12 13:38:39 -08001101
1102 /* Default to using SSC */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001103 dev_priv->vbt.lvds_use_ssc = 1;
Duncan Laurief69e5152013-11-13 17:59:43 -08001104 /*
1105 * Core/SandyBridge/IvyBridge use alternative (120MHz) reference
1106 * clock for LVDS.
1107 */
1108 dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev,
1109 !HAS_PCH_SPLIT(dev));
Ville Syrjäläe91e9412013-12-09 18:54:16 +02001110 DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001111
1112 for (port = PORT_A; port < I915_MAX_PORTS; port++) {
Paulo Zanoni311a2092013-09-12 17:12:18 -03001113 struct ddi_vbt_port_info *info =
1114 &dev_priv->vbt.ddi_port_info[port];
1115
Paulo Zanoni6acab152013-09-12 17:06:24 -03001116 /* Recommended BSpec default: 800mV 0dB. */
Paulo Zanoni311a2092013-09-12 17:12:18 -03001117 info->hdmi_level_shift = 6;
1118
1119 info->supports_dvi = (port != PORT_A && port != PORT_E);
1120 info->supports_hdmi = info->supports_dvi;
1121 info->supports_dp = (port != PORT_E);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001122 }
Simon Que6a040022010-09-30 09:36:39 +01001123}
1124
Daniel Vetter25e341c2012-03-24 23:51:30 +01001125static int __init intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
1126{
1127 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
1128 "VBIOS ROM for %s\n",
1129 id->ident);
1130 return 1;
1131}
1132
1133static const struct dmi_system_id intel_no_opregion_vbt[] = {
1134 {
1135 .callback = intel_no_opregion_vbt_callback,
1136 .ident = "ThinkCentre A57",
1137 .matches = {
1138 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1139 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
1140 },
1141 },
1142 { }
1143};
1144
Chris Wilson3dd4e842014-04-18 18:04:22 -03001145static struct bdb_header *validate_vbt(char *base, size_t size,
1146 struct vbt_header *vbt,
1147 const char *source)
1148{
1149 size_t offset;
1150 struct bdb_header *bdb;
1151
1152 if (vbt == NULL) {
1153 DRM_DEBUG_DRIVER("VBT signature missing\n");
1154 return NULL;
1155 }
1156
1157 offset = (char *)vbt - base;
1158 if (offset + sizeof(struct vbt_header) > size) {
1159 DRM_DEBUG_DRIVER("VBT header incomplete\n");
1160 return NULL;
1161 }
1162
1163 if (memcmp(vbt->signature, "$VBT", 4)) {
1164 DRM_DEBUG_DRIVER("VBT invalid signature\n");
1165 return NULL;
1166 }
1167
1168 offset += vbt->bdb_offset;
1169 if (offset + sizeof(struct bdb_header) > size) {
1170 DRM_DEBUG_DRIVER("BDB header incomplete\n");
1171 return NULL;
1172 }
1173
1174 bdb = (struct bdb_header *)(base + offset);
1175 if (offset + bdb->bdb_size > size) {
1176 DRM_DEBUG_DRIVER("BDB incomplete\n");
1177 return NULL;
1178 }
1179
1180 DRM_DEBUG_KMS("Using VBT from %s: %20s\n",
1181 source, vbt->signature);
1182 return bdb;
1183}
1184
Jesse Barnes79e53942008-11-07 14:24:08 -08001185/**
Bryan Freed6d139a82010-10-14 09:14:51 +01001186 * intel_parse_bios - find VBT and initialize settings from the BIOS
Jesse Barnes79e53942008-11-07 14:24:08 -08001187 * @dev: DRM device
1188 *
1189 * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers
1190 * to appropriate values.
1191 *
Jesse Barnes79e53942008-11-07 14:24:08 -08001192 * Returns 0 on success, nonzero on failure.
1193 */
Dan Carpenter0317c6c2012-06-27 12:10:30 +03001194int
Bryan Freed6d139a82010-10-14 09:14:51 +01001195intel_parse_bios(struct drm_device *dev)
Jesse Barnes79e53942008-11-07 14:24:08 -08001196{
1197 struct drm_i915_private *dev_priv = dev->dev_private;
1198 struct pci_dev *pdev = dev->pdev;
Chris Wilson44834a62010-08-19 16:09:23 +01001199 struct bdb_header *bdb = NULL;
1200 u8 __iomem *bios = NULL;
Jesse Barnes79e53942008-11-07 14:24:08 -08001201
Ben Widawskyab5c6082013-04-05 13:12:41 -07001202 if (HAS_PCH_NOP(dev))
1203 return -ENODEV;
1204
Simon Que6a040022010-09-30 09:36:39 +01001205 init_vbt_defaults(dev_priv);
Chris Wilsonf899fc62010-07-20 15:44:45 -07001206
Chris Wilson44834a62010-08-19 16:09:23 +01001207 /* XXX Should this validation be moved to intel_opregion.c? */
Chris Wilson3dd4e842014-04-18 18:04:22 -03001208 if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt)
1209 bdb = validate_vbt((char *)dev_priv->opregion.header, OPREGION_SIZE,
1210 (struct vbt_header *)dev_priv->opregion.vbt,
1211 "OpRegion");
Jesse Barnes79e53942008-11-07 14:24:08 -08001212
Chris Wilson44834a62010-08-19 16:09:23 +01001213 if (bdb == NULL) {
Chris Wilson3dd4e842014-04-18 18:04:22 -03001214 size_t i, size;
Chris Wilson44834a62010-08-19 16:09:23 +01001215
1216 bios = pci_map_rom(pdev, &size);
1217 if (!bios)
1218 return -1;
1219
1220 /* Scour memory looking for the VBT signature */
1221 for (i = 0; i + 4 < size; i++) {
Chris Wilson3dd4e842014-04-18 18:04:22 -03001222 if (memcmp(bios + i, "$VBT", 4) == 0) {
1223 bdb = validate_vbt(bios, size,
1224 (struct vbt_header *)(bios + i),
1225 "PCI ROM");
Chris Wilson44834a62010-08-19 16:09:23 +01001226 break;
1227 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001228 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001229
Chris Wilson3dd4e842014-04-18 18:04:22 -03001230 if (!bdb) {
Chris Wilson44834a62010-08-19 16:09:23 +01001231 pci_unmap_rom(pdev, bios);
1232 return -1;
1233 }
Chris Wilson44834a62010-08-19 16:09:23 +01001234 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001235
1236 /* Grab useful general definitions */
1237 parse_general_features(dev_priv, bdb);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +02001238 parse_general_definitions(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +08001239 parse_lfp_panel_data(dev_priv, bdb);
Jani Nikulaf00076d2013-12-14 20:38:29 -02001240 parse_lfp_backlight(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +08001241 parse_sdvo_panel_data(dev_priv, bdb);
yakui_zhao9b9d1722009-05-31 17:17:17 +08001242 parse_sdvo_device_mapping(dev_priv, bdb);
Zhao Yakui6363ee62009-11-24 09:48:44 +08001243 parse_device_mapping(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +08001244 parse_driver_features(dev_priv, bdb);
Zhenyu Wang500a8cc2010-01-13 11:19:52 +08001245 parse_edp(dev_priv, bdb);
Shobhit Kumard17c5442013-08-27 15:12:25 +03001246 parse_mipi(dev_priv, bdb);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001247 parse_ddi_ports(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +08001248
Chris Wilson44834a62010-08-19 16:09:23 +01001249 if (bios)
1250 pci_unmap_rom(pdev, bios);
Jesse Barnes79e53942008-11-07 14:24:08 -08001251
1252 return 0;
1253}
Bryan Freed6d139a82010-10-14 09:14:51 +01001254
1255/* Ensure that vital registers have been initialised, even if the BIOS
1256 * is absent or just failing to do its job.
1257 */
1258void intel_setup_bios(struct drm_device *dev)
1259{
1260 struct drm_i915_private *dev_priv = dev->dev_private;
1261
1262 /* Set the Panel Power On/Off timings if uninitialized. */
Damien Lespiau42d42e72012-10-31 19:23:16 +00001263 if (!HAS_PCH_SPLIT(dev) &&
1264 I915_READ(PP_ON_DELAYS) == 0 && I915_READ(PP_OFF_DELAYS) == 0) {
Bryan Freed6d139a82010-10-14 09:14:51 +01001265 /* Set T2 to 40ms and T5 to 200ms */
1266 I915_WRITE(PP_ON_DELAYS, 0x019007d0);
1267
1268 /* Set T3 to 35ms and Tx to 200ms */
1269 I915_WRITE(PP_OFF_DELAYS, 0x015e07d0);
1270 }
1271}