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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 */
Jani Nikulab30581a2015-12-14 12:50:46 +020027
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"
Jani Nikula72341af2016-03-16 12:43:35 +020032
33#define _INTEL_BIOS_PRIVATE
34#include "intel_vbt_defs.h"
Jesse Barnes79e53942008-11-07 14:24:08 -080035
Jani Nikuladd979502015-12-21 15:10:52 +020036/**
37 * DOC: Video BIOS Table (VBT)
38 *
39 * The Video BIOS Table, or VBT, provides platform and board specific
40 * configuration information to the driver that is not discoverable or available
41 * through other means. The configuration is mostly related to display
42 * hardware. The VBT is available via the ACPI OpRegion or, on older systems, in
43 * the PCI ROM.
44 *
45 * The VBT consists of a VBT Header (defined as &struct vbt_header), a BDB
46 * Header (&struct bdb_header), and a number of BIOS Data Blocks (BDB) that
47 * contain the actual configuration information. The VBT Header, and thus the
48 * VBT, begins with "$VBT" signature. The VBT Header contains the offset of the
49 * BDB Header. The data blocks are concatenated after the BDB Header. The data
50 * blocks have a 1-byte Block ID, 2-byte Block Size, and Block Size bytes of
51 * data. (Block 53, the MIPI Sequence Block is an exception.)
52 *
53 * The driver parses the VBT during load. The relevant information is stored in
54 * driver private data for ease of use, and the actual VBT is not read after
55 * that.
56 */
57
yakui_zhao9b9d1722009-05-31 17:17:17 +080058#define SLAVE_ADDR1 0x70
59#define SLAVE_ADDR2 0x72
Jesse Barnes79e53942008-11-07 14:24:08 -080060
Jani Nikula08c08882015-12-21 15:10:55 +020061/* Get BDB block size given a pointer to Block ID. */
62static u32 _get_blocksize(const u8 *block_base)
63{
64 /* The MIPI Sequence Block v3+ has a separate size field. */
65 if (*block_base == BDB_MIPI_SEQUENCE && *(block_base + 3) >= 3)
66 return *((const u32 *)(block_base + 4));
67 else
68 return *((const u16 *)(block_base + 1));
69}
70
71/* Get BDB block size give a pointer to data after Block ID and Block Size. */
72static u32 get_blocksize(const void *block_data)
73{
74 return _get_blocksize(block_data - 3);
75}
76
Jani Nikulae8ef3b42015-04-15 15:18:28 +030077static const void *
78find_section(const void *_bdb, int section_id)
Jesse Barnes79e53942008-11-07 14:24:08 -080079{
Jani Nikulae8ef3b42015-04-15 15:18:28 +030080 const struct bdb_header *bdb = _bdb;
81 const u8 *base = _bdb;
Jesse Barnes79e53942008-11-07 14:24:08 -080082 int index = 0;
Jani Nikulacd67d222015-09-17 16:42:07 +030083 u32 total, current_size;
Jesse Barnes79e53942008-11-07 14:24:08 -080084 u8 current_id;
85
86 /* skip to first section */
87 index += bdb->header_size;
88 total = bdb->bdb_size;
89
90 /* walk the sections looking for section_id */
Chris Wilsond1f13fd2014-04-18 18:04:23 -030091 while (index + 3 < total) {
Jesse Barnes79e53942008-11-07 14:24:08 -080092 current_id = *(base + index);
Jani Nikula08c08882015-12-21 15:10:55 +020093 current_size = _get_blocksize(base + index);
94 index += 3;
Jani Nikulacd67d222015-09-17 16:42:07 +030095
Chris Wilsond1f13fd2014-04-18 18:04:23 -030096 if (index + current_size > total)
97 return NULL;
98
Jesse Barnes79e53942008-11-07 14:24:08 -080099 if (current_id == section_id)
100 return base + index;
Chris Wilsond1f13fd2014-04-18 18:04:23 -0300101
Jesse Barnes79e53942008-11-07 14:24:08 -0800102 index += current_size;
103 }
104
105 return NULL;
106}
107
Jesse Barnes79e53942008-11-07 14:24:08 -0800108static void
Ma Ling88631702009-05-13 11:19:55 +0800109fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
Chris Wilson99834ea2011-07-13 21:01:46 +0100110 const struct lvds_dvo_timing *dvo_timing)
Ma Ling88631702009-05-13 11:19:55 +0800111{
112 panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
113 dvo_timing->hactive_lo;
114 panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
115 ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
116 panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
117 dvo_timing->hsync_pulse_width;
118 panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
119 ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
120
121 panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) |
122 dvo_timing->vactive_lo;
123 panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay +
124 dvo_timing->vsync_off;
125 panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
126 dvo_timing->vsync_pulse_width;
127 panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
128 ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
129 panel_fixed_mode->clock = dvo_timing->clock * 10;
130 panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
131
Adam Jackson9bc35492010-05-28 17:17:37 -0400132 if (dvo_timing->hsync_positive)
133 panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
134 else
135 panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
136
137 if (dvo_timing->vsync_positive)
138 panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
139 else
140 panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
141
Ville Syrjälädf457242016-05-31 12:08:34 +0300142 panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) |
143 dvo_timing->himage_lo;
144 panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) |
145 dvo_timing->vimage_lo;
146
Ma Ling88631702009-05-13 11:19:55 +0800147 /* Some VBTs have bogus h/vtotal values */
148 if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
149 panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
150 if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
151 panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
152
153 drm_mode_set_name(panel_fixed_mode);
154}
155
Chris Wilson99834ea2011-07-13 21:01:46 +0100156static const struct lvds_dvo_timing *
157get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data,
158 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs,
159 int index)
160{
161 /*
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
167 int lfp_data_size =
168 lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset -
169 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset;
170 int dvo_timing_offset =
171 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset -
172 lvds_lfp_data_ptrs->ptr[0].fp_timing_offset;
173 char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index;
174
175 return (struct lvds_dvo_timing *)(entry + dvo_timing_offset);
176}
177
Takashi Iwaib0354382012-03-20 13:07:05 +0100178/* get lvds_fp_timing entry
179 * this function may return NULL if the corresponding entry is invalid
180 */
181static const struct lvds_fp_timing *
182get_lvds_fp_timing(const struct bdb_header *bdb,
183 const struct bdb_lvds_lfp_data *data,
184 const struct bdb_lvds_lfp_data_ptrs *ptrs,
185 int index)
186{
187 size_t data_ofs = (const u8 *)data - (const u8 *)bdb;
188 u16 data_size = ((const u16 *)data)[-1]; /* stored in header */
189 size_t ofs;
190
191 if (index >= ARRAY_SIZE(ptrs->ptr))
192 return NULL;
193 ofs = ptrs->ptr[index].fp_timing_offset;
194 if (ofs < data_ofs ||
195 ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size)
196 return NULL;
197 return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
198}
199
Ma Ling88631702009-05-13 11:19:55 +0800200/* Try to find integrated panel data */
201static void
202parse_lfp_panel_data(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300203 const struct bdb_header *bdb)
Jesse Barnes79e53942008-11-07 14:24:08 -0800204{
Chris Wilson99834ea2011-07-13 21:01:46 +0100205 const struct bdb_lvds_options *lvds_options;
206 const struct bdb_lvds_lfp_data *lvds_lfp_data;
207 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
208 const struct lvds_dvo_timing *panel_dvo_timing;
Takashi Iwaib0354382012-03-20 13:07:05 +0100209 const struct lvds_fp_timing *fp_timing;
Jesse Barnes79e53942008-11-07 14:24:08 -0800210 struct drm_display_mode *panel_fixed_mode;
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300211 int panel_type;
Daniel Vetterc329a4e2015-06-18 10:30:23 +0200212 int drrs_mode;
Ville Syrjäläa0562812016-04-11 10:23:51 +0300213 int ret;
Jesse Barnes79e53942008-11-07 14:24:08 -0800214
Jesse Barnes79e53942008-11-07 14:24:08 -0800215 lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
216 if (!lvds_options)
217 return;
218
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300219 dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
Ville Syrjäläa0562812016-04-11 10:23:51 +0300220
Chris Wilson6f9f4b72016-05-23 15:08:09 +0100221 ret = intel_opregion_get_panel_type(dev_priv);
Ville Syrjäläa0562812016-04-11 10:23:51 +0300222 if (ret >= 0) {
223 WARN_ON(ret > 0xf);
224 panel_type = ret;
225 DRM_DEBUG_KMS("Panel type: %d (OpRegion)\n", panel_type);
226 } else {
227 if (lvds_options->panel_type > 0xf) {
228 DRM_DEBUG_KMS("Invalid VBT panel type 0x%x\n",
229 lvds_options->panel_type);
230 return;
231 }
232 panel_type = lvds_options->panel_type;
233 DRM_DEBUG_KMS("Panel type: %d (VBT)\n", panel_type);
Ville Syrjäläeeeebea2016-04-11 10:22:09 +0300234 }
Simon Que6a040022010-09-30 09:36:39 +0100235
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300236 dev_priv->vbt.panel_type = panel_type;
Jesse Barnes79e53942008-11-07 14:24:08 -0800237
Pradeep Bhat83a72802014-03-28 10:14:57 +0530238 drrs_mode = (lvds_options->dps_panel_type_bits
239 >> (panel_type * 2)) & MODE_MASK;
240 /*
241 * VBT has static DRRS = 0 and seamless DRRS = 2.
242 * The below piece of code is required to adjust vbt.drrs_type
243 * to match the enum drrs_support_type.
244 */
245 switch (drrs_mode) {
246 case 0:
247 dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT;
248 DRM_DEBUG_KMS("DRRS supported mode is static\n");
249 break;
250 case 2:
251 dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT;
252 DRM_DEBUG_KMS("DRRS supported mode is seamless\n");
253 break;
254 default:
255 dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
256 DRM_DEBUG_KMS("DRRS not supported (VBT input)\n");
257 break;
258 }
259
Jesse Barnes79e53942008-11-07 14:24:08 -0800260 lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
261 if (!lvds_lfp_data)
262 return;
263
Jesse Barnes1b16de02009-06-22 11:30:30 -0700264 lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
265 if (!lvds_lfp_data_ptrs)
266 return;
267
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300268 dev_priv->vbt.lvds_vbt = 1;
Jesse Barnes79e53942008-11-07 14:24:08 -0800269
Chris Wilson99834ea2011-07-13 21:01:46 +0100270 panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
271 lvds_lfp_data_ptrs,
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300272 panel_type);
Jesse Barnes79e53942008-11-07 14:24:08 -0800273
Eric Anholt9a298b22009-03-24 12:23:04 -0700274 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Chris Wilson6edc3242010-09-12 17:16:17 +0100275 if (!panel_fixed_mode)
276 return;
Jesse Barnes79e53942008-11-07 14:24:08 -0800277
Chris Wilson99834ea2011-07-13 21:01:46 +0100278 fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
Jesse Barnes79e53942008-11-07 14:24:08 -0800279
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300280 dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800281
Zhao Yakui28c97732009-10-09 11:39:41 +0800282 DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800283 drm_mode_debug_printmodeline(panel_fixed_mode);
284
Takashi Iwaib0354382012-03-20 13:07:05 +0100285 fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
286 lvds_lfp_data_ptrs,
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300287 panel_type);
Takashi Iwaib0354382012-03-20 13:07:05 +0100288 if (fp_timing) {
289 /* check the resolution, just to be sure */
290 if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
291 fp_timing->y_res == panel_fixed_mode->vdisplay) {
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300292 dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
Takashi Iwaib0354382012-03-20 13:07:05 +0100293 DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300294 dev_priv->vbt.bios_lvds_val);
Takashi Iwaib0354382012-03-20 13:07:05 +0100295 }
296 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800297}
298
Jani Nikulaf00076d2013-12-14 20:38:29 -0200299static void
Jani Nikuladcb58a42015-05-12 15:41:32 +0300300parse_lfp_backlight(struct drm_i915_private *dev_priv,
301 const struct bdb_header *bdb)
Jani Nikulaf00076d2013-12-14 20:38:29 -0200302{
303 const struct bdb_lfp_backlight_data *backlight_data;
304 const struct bdb_lfp_backlight_data_entry *entry;
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300305 int panel_type = dev_priv->vbt.panel_type;
Jani Nikulaf00076d2013-12-14 20:38:29 -0200306
307 backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT);
308 if (!backlight_data)
309 return;
310
311 if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
312 DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n",
313 backlight_data->entry_size);
314 return;
315 }
316
317 entry = &backlight_data->data[panel_type];
318
Jani Nikula39fbc9c2014-04-09 11:22:06 +0300319 dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
320 if (!dev_priv->vbt.backlight.present) {
321 DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n",
322 entry->type);
323 return;
324 }
325
Deepak M9a41e172016-04-26 16:14:24 +0300326 dev_priv->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
327 if (bdb->version >= 191 &&
328 get_blocksize(backlight_data) >= sizeof(*backlight_data)) {
329 const struct bdb_lfp_backlight_control_method *method;
330
331 method = &backlight_data->backlight_control[panel_type];
332 dev_priv->vbt.backlight.type = method->type;
333 }
334
Jani Nikulaf00076d2013-12-14 20:38:29 -0200335 dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
336 dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm;
Jani Nikula1de60682014-06-24 18:27:39 +0300337 dev_priv->vbt.backlight.min_brightness = entry->min_brightness;
Jani Nikulaf00076d2013-12-14 20:38:29 -0200338 DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
339 "active %s, min brightness %u, level %u\n",
340 dev_priv->vbt.backlight.pwm_freq_hz,
341 dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
Jani Nikula1de60682014-06-24 18:27:39 +0300342 dev_priv->vbt.backlight.min_brightness,
Jani Nikulaf00076d2013-12-14 20:38:29 -0200343 backlight_data->level[panel_type]);
344}
345
Ma Ling88631702009-05-13 11:19:55 +0800346/* Try to find sdvo panel data */
347static void
348parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300349 const struct bdb_header *bdb)
Ma Ling88631702009-05-13 11:19:55 +0800350{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300351 const struct lvds_dvo_timing *dvo_timing;
Ma Ling88631702009-05-13 11:19:55 +0800352 struct drm_display_mode *panel_fixed_mode;
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000353 int index;
Ma Ling88631702009-05-13 11:19:55 +0800354
Jani Nikulad330a952014-01-21 11:24:25 +0200355 index = i915.vbt_sdvo_panel_type;
Mathias Fröhlichc10e4082012-03-01 06:44:35 +0100356 if (index == -2) {
357 DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
358 return;
359 }
360
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000361 if (index == -1) {
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300362 const struct bdb_sdvo_lvds_options *sdvo_lvds_options;
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000363
364 sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
365 if (!sdvo_lvds_options)
366 return;
367
368 index = sdvo_lvds_options->panel_type;
369 }
Ma Ling88631702009-05-13 11:19:55 +0800370
371 dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
372 if (!dvo_timing)
373 return;
374
Eric Anholt9a298b22009-03-24 12:23:04 -0700375 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
Ma Ling88631702009-05-13 11:19:55 +0800376 if (!panel_fixed_mode)
377 return;
378
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000379 fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
Ma Ling88631702009-05-13 11:19:55 +0800380
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300381 dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
Ma Ling88631702009-05-13 11:19:55 +0800382
Chris Wilson5a1e5b62011-01-29 16:50:25 +0000383 DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
384 drm_mode_debug_printmodeline(panel_fixed_mode);
Ma Ling88631702009-05-13 11:19:55 +0800385}
386
Jani Nikula98f3a1d2015-12-16 15:04:20 +0200387static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv,
Bryan Freed9a4114f2011-01-12 13:38:39 -0800388 bool alternate)
389{
Jani Nikula98f3a1d2015-12-16 15:04:20 +0200390 switch (INTEL_INFO(dev_priv)->gen) {
Bryan Freed9a4114f2011-01-12 13:38:39 -0800391 case 2:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200392 return alternate ? 66667 : 48000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800393 case 3:
394 case 4:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200395 return alternate ? 100000 : 96000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800396 default:
Ville Syrjäläe91e9412013-12-09 18:54:16 +0200397 return alternate ? 100000 : 120000;
Bryan Freed9a4114f2011-01-12 13:38:39 -0800398 }
399}
400
Jesse Barnes79e53942008-11-07 14:24:08 -0800401static void
402parse_general_features(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300403 const struct bdb_header *bdb)
Jesse Barnes79e53942008-11-07 14:24:08 -0800404{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300405 const struct bdb_general_features *general;
Jesse Barnes79e53942008-11-07 14:24:08 -0800406
Jesse Barnes79e53942008-11-07 14:24:08 -0800407 general = find_section(bdb, BDB_GENERAL_FEATURES);
Jani Nikula34957e82015-12-16 15:04:21 +0200408 if (!general)
409 return;
410
411 dev_priv->vbt.int_tv_support = general->int_tv_support;
412 /* int_crt_support can't be trusted on earlier platforms */
413 if (bdb->version >= 155 &&
414 (HAS_DDI(dev_priv) || IS_VALLEYVIEW(dev_priv)))
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 =
418 intel_bios_ssc_frequency(dev_priv, general->ssc_freq);
419 dev_priv->vbt.display_clock_mode = general->display_clock_mode;
420 dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
421 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",
422 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
yakui_zhao9b9d1722009-05-31 17:17:17 +0800430static void
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200431parse_general_definitions(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300432 const struct bdb_header *bdb)
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200433{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300434 const struct bdb_general_definitions *general;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200435
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200436 general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
437 if (general) {
438 u16 block_size = get_blocksize(general);
439 if (block_size >= sizeof(*general)) {
440 int bus_pin = general->crt_ddc_gmbus_pin;
Zhao Yakui28c97732009-10-09 11:39:41 +0800441 DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
Jani Nikula88ac7932015-03-27 00:20:22 +0200442 if (intel_gmbus_is_valid_pin(dev_priv, bus_pin))
Rodrigo Vivi41aa3442013-05-09 20:03:18 -0300443 dev_priv->vbt.crt_ddc_pin = bus_pin;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200444 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800445 DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800446 block_size);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200447 }
448 }
449}
450
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300451static const union child_device_config *
452child_device_ptr(const struct bdb_general_definitions *p_defs, int i)
Ville Syrjälä90e4f152015-03-25 18:45:58 +0200453{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300454 return (const void *) &p_defs->devices[i * p_defs->child_dev_size];
Ville Syrjälä90e4f152015-03-25 18:45:58 +0200455}
456
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200457static void
yakui_zhao9b9d1722009-05-31 17:17:17 +0800458parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300459 const struct bdb_header *bdb)
yakui_zhao9b9d1722009-05-31 17:17:17 +0800460{
461 struct sdvo_device_mapping *p_mapping;
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300462 const struct bdb_general_definitions *p_defs;
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300463 const struct old_child_dev_config *child; /* legacy */
yakui_zhao9b9d1722009-05-31 17:17:17 +0800464 int i, child_device_num, count;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200465 u16 block_size;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800466
467 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
468 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +0100469 DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800470 return;
471 }
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300472
473 /*
474 * Only parse SDVO mappings when the general definitions block child
475 * device size matches that of the *legacy* child device config
476 * struct. Thus, SDVO mapping will be skipped for newer VBT.
yakui_zhao9b9d1722009-05-31 17:17:17 +0800477 */
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300478 if (p_defs->child_dev_size != sizeof(*child)) {
479 DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800480 return;
481 }
482 /* get the block size of general definitions */
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200483 block_size = get_blocksize(p_defs);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800484 /* get the number of child device */
485 child_device_num = (block_size - sizeof(*p_defs)) /
Ville Syrjälä90e4f152015-03-25 18:45:58 +0200486 p_defs->child_dev_size;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800487 count = 0;
488 for (i = 0; i < child_device_num; i++) {
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300489 child = &child_device_ptr(p_defs, i)->old;
490 if (!child->device_type) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800491 /* skip the device block if device type is invalid */
492 continue;
493 }
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300494 if (child->slave_addr != SLAVE_ADDR1 &&
495 child->slave_addr != SLAVE_ADDR2) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800496 /*
497 * If the slave address is neither 0x70 nor 0x72,
498 * it is not a SDVO device. Skip it.
499 */
500 continue;
501 }
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300502 if (child->dvo_port != DEVICE_PORT_DVOB &&
503 child->dvo_port != DEVICE_PORT_DVOC) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800504 /* skip the incorrect SDVO port */
Akshay Joshi0206e352011-08-16 15:34:10 -0400505 DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800506 continue;
507 }
Zhao Yakui28c97732009-10-09 11:39:41 +0800508 DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300509 " %s port\n",
510 child->slave_addr,
511 (child->dvo_port == DEVICE_PORT_DVOB) ?
512 "SDVOB" : "SDVOC");
Jani Nikula9d6c8752016-03-24 17:50:22 +0200513 p_mapping = &dev_priv->vbt.sdvo_mappings[child->dvo_port - 1];
yakui_zhao9b9d1722009-05-31 17:17:17 +0800514 if (!p_mapping->initialized) {
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300515 p_mapping->dvo_port = child->dvo_port;
516 p_mapping->slave_addr = child->slave_addr;
517 p_mapping->dvo_wiring = child->dvo_wiring;
518 p_mapping->ddc_pin = child->ddc_pin;
519 p_mapping->i2c_pin = child->i2c_pin;
yakui_zhao9b9d1722009-05-31 17:17:17 +0800520 p_mapping->initialized = 1;
Adam Jackson46eb3032011-06-16 16:36:23 -0400521 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 +0100522 p_mapping->dvo_port,
523 p_mapping->slave_addr,
524 p_mapping->dvo_wiring,
525 p_mapping->ddc_pin,
Adam Jackson46eb3032011-06-16 16:36:23 -0400526 p_mapping->i2c_pin);
yakui_zhao9b9d1722009-05-31 17:17:17 +0800527 } else {
Zhao Yakui28c97732009-10-09 11:39:41 +0800528 DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
yakui_zhao9b9d1722009-05-31 17:17:17 +0800529 "two SDVO device.\n");
530 }
Jani Nikula6cc38ac2015-08-18 14:28:55 +0300531 if (child->slave2_addr) {
yakui_zhao9b9d1722009-05-31 17:17:17 +0800532 /* Maybe this is a SDVO device with multiple inputs */
533 /* And the mapping info is not added */
Zhao Yakui28c97732009-10-09 11:39:41 +0800534 DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
535 " is a SDVO device with multiple inputs.\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800536 }
537 count++;
538 }
539
540 if (!count) {
541 /* No SDVO device info is found */
Zhao Yakui28c97732009-10-09 11:39:41 +0800542 DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
yakui_zhao9b9d1722009-05-31 17:17:17 +0800543 }
544 return;
545}
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800546
547static void
548parse_driver_features(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +0300549 const struct bdb_header *bdb)
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800550{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300551 const struct bdb_driver_features *driver;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800552
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800553 driver = find_section(bdb, BDB_DRIVER_FEATURES);
Jesse Barnes652c3932009-08-17 13:31:43 -0700554 if (!driver)
555 return;
556
Daniel Vetter6fca55b2013-09-21 00:48:39 +0200557 if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
Jani Nikula6aa23e62016-03-24 17:50:20 +0200558 dev_priv->vbt.edp.support = 1;
Jesse Barnes652c3932009-08-17 13:31:43 -0700559
Pradeep Bhat83a72802014-03-28 10:14:57 +0530560 DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
561 /*
562 * If DRRS is not supported, drrs_type has to be set to 0.
563 * This is because, VBT is configured in such a way that
564 * static DRRS is 0 and DRRS not supported is represented by
565 * driver->drrs_enabled=false
566 */
567 if (!driver->drrs_enabled)
568 dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800569}
570
Zhao Yakui6363ee62009-11-24 09:48:44 +0800571static void
Jani Nikuladcb58a42015-05-12 15:41:32 +0300572parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800573{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300574 const struct bdb_edp *edp;
575 const struct edp_power_seq *edp_pps;
576 const struct edp_link_params *edp_link_params;
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300577 int panel_type = dev_priv->vbt.panel_type;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800578
579 edp = find_section(bdb, BDB_EDP);
580 if (!edp) {
Jani Nikula6aa23e62016-03-24 17:50:20 +0200581 if (dev_priv->vbt.edp.support)
Jani Nikula9a30a612012-11-12 14:33:45 +0200582 DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800583 return;
584 }
585
586 switch ((edp->color_depth >> (panel_type * 2)) & 3) {
587 case EDP_18BPP:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200588 dev_priv->vbt.edp.bpp = 18;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800589 break;
590 case EDP_24BPP:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200591 dev_priv->vbt.edp.bpp = 24;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800592 break;
593 case EDP_30BPP:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200594 dev_priv->vbt.edp.bpp = 30;
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800595 break;
596 }
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100597
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700598 /* Get the eDP sequencing and link info */
599 edp_pps = &edp->power_seqs[panel_type];
600 edp_link_params = &edp->link_params[panel_type];
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100601
Jani Nikula6aa23e62016-03-24 17:50:20 +0200602 dev_priv->vbt.edp.pps = *edp_pps;
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100603
Jani Nikulae13e2b22014-05-06 14:56:51 +0300604 switch (edp_link_params->rate) {
605 case EDP_RATE_1_62:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200606 dev_priv->vbt.edp.rate = DP_LINK_BW_1_62;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300607 break;
608 case EDP_RATE_2_7:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200609 dev_priv->vbt.edp.rate = DP_LINK_BW_2_7;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300610 break;
611 default:
612 DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n",
613 edp_link_params->rate);
614 break;
615 }
616
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700617 switch (edp_link_params->lanes) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300618 case EDP_LANE_1:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200619 dev_priv->vbt.edp.lanes = 1;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700620 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300621 case EDP_LANE_2:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200622 dev_priv->vbt.edp.lanes = 2;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700623 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300624 case EDP_LANE_4:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200625 dev_priv->vbt.edp.lanes = 4;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700626 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300627 default:
628 DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n",
629 edp_link_params->lanes);
630 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700631 }
Jani Nikulae13e2b22014-05-06 14:56:51 +0300632
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700633 switch (edp_link_params->preemphasis) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300634 case EDP_PREEMPHASIS_NONE:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200635 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700636 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300637 case EDP_PREEMPHASIS_3_5dB:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200638 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700639 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300640 case EDP_PREEMPHASIS_6dB:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200641 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700642 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300643 case EDP_PREEMPHASIS_9_5dB:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200644 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700645 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300646 default:
647 DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n",
648 edp_link_params->preemphasis);
649 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700650 }
Jani Nikulae13e2b22014-05-06 14:56:51 +0300651
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700652 switch (edp_link_params->vswing) {
Jani Nikulae13e2b22014-05-06 14:56:51 +0300653 case EDP_VSWING_0_4V:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200654 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700655 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300656 case EDP_VSWING_0_6V:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200657 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700658 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300659 case EDP_VSWING_0_8V:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200660 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700661 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300662 case EDP_VSWING_1_2V:
Jani Nikula6aa23e62016-03-24 17:50:20 +0200663 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700664 break;
Jani Nikulae13e2b22014-05-06 14:56:51 +0300665 default:
666 DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n",
667 edp_link_params->vswing);
668 break;
Jesse Barnes9f0e7ff2010-10-07 16:01:14 -0700669 }
Sonika Jindal9a57f5b2015-02-25 10:29:11 +0530670
671 if (bdb->version >= 173) {
672 uint8_t vswing;
673
Sonika Jindal9e458032015-05-06 17:35:48 +0530674 /* Don't read from VBT if module parameter has valid value*/
675 if (i915.edp_vswing) {
Jani Nikula06411f02016-03-24 17:50:21 +0200676 dev_priv->vbt.edp.low_vswing = i915.edp_vswing == 1;
Sonika Jindal9e458032015-05-06 17:35:48 +0530677 } else {
678 vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
Jani Nikula06411f02016-03-24 17:50:21 +0200679 dev_priv->vbt.edp.low_vswing = vswing == 0;
Sonika Jindal9e458032015-05-06 17:35:48 +0530680 }
Sonika Jindal9a57f5b2015-02-25 10:29:11 +0530681 }
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800682}
683
Rodrigo Vivibfd7ebd2014-11-14 08:52:30 -0800684static void
Jani Nikuladcb58a42015-05-12 15:41:32 +0300685parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
Rodrigo Vivibfd7ebd2014-11-14 08:52:30 -0800686{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300687 const struct bdb_psr *psr;
688 const struct psr_table *psr_table;
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300689 int panel_type = dev_priv->vbt.panel_type;
Rodrigo Vivibfd7ebd2014-11-14 08:52:30 -0800690
691 psr = find_section(bdb, BDB_PSR);
692 if (!psr) {
693 DRM_DEBUG_KMS("No PSR BDB found.\n");
694 return;
695 }
696
697 psr_table = &psr->psr_table[panel_type];
698
699 dev_priv->vbt.psr.full_link = psr_table->full_link;
700 dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup;
701
702 /* Allowed VBT values goes from 0 to 15 */
703 dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
704 psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
705
706 switch (psr_table->lines_to_wait) {
707 case 0:
708 dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT;
709 break;
710 case 1:
711 dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT;
712 break;
713 case 2:
714 dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT;
715 break;
716 case 3:
717 dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT;
718 break;
719 default:
720 DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n",
721 psr_table->lines_to_wait);
722 break;
723 }
724
725 dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time;
726 dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time;
727}
728
Zhenyu Wang500a8cc2010-01-13 11:19:52 +0800729static void
Jani Nikula0f8689f2015-12-21 15:10:54 +0200730parse_mipi_config(struct drm_i915_private *dev_priv,
731 const struct bdb_header *bdb)
Shobhit Kumard17c5442013-08-27 15:12:25 +0300732{
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300733 const struct bdb_mipi_config *start;
Jani Nikulae8ef3b42015-04-15 15:18:28 +0300734 const struct mipi_config *config;
735 const struct mipi_pps_data *pps;
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300736 int panel_type = dev_priv->vbt.panel_type;
Shobhit Kumard17c5442013-08-27 15:12:25 +0300737
Shobhit Kumar3e6bd012014-05-27 19:33:59 +0530738 /* parse MIPI blocks only if LFP type is MIPI */
Jani Nikula7caaef32016-03-16 12:43:34 +0200739 if (!intel_bios_is_dsi_present(dev_priv, NULL))
Shobhit Kumar3e6bd012014-05-27 19:33:59 +0530740 return;
741
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530742 /* Initialize this to undefined indicating no generic MIPI support */
743 dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
744
745 /* Block #40 is already parsed and panel_fixed_mode is
746 * stored in dev_priv->lfp_lvds_vbt_mode
747 * resuse this when needed
748 */
749
750 /* Parse #52 for panel index used from panel_type already
751 * parsed
752 */
753 start = find_section(bdb, BDB_MIPI_CONFIG);
754 if (!start) {
755 DRM_DEBUG_KMS("No MIPI config BDB found");
Shobhit Kumard17c5442013-08-27 15:12:25 +0300756 return;
757 }
758
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530759 DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n",
760 panel_type);
761
762 /*
763 * get hold of the correct configuration block and pps data as per
764 * the panel_type as index
765 */
766 config = &start->config[panel_type];
767 pps = &start->pps[panel_type];
768
769 /* store as of now full data. Trim when we realise all is not needed */
770 dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
771 if (!dev_priv->vbt.dsi.config)
772 return;
773
774 dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
775 if (!dev_priv->vbt.dsi.pps) {
776 kfree(dev_priv->vbt.dsi.config);
777 return;
778 }
779
Deepak M9f7c5b12016-03-30 17:03:40 +0300780 /*
781 * These fields are introduced from the VBT version 197 onwards,
782 * so making sure that these bits are set zero in the previous
783 * versions.
784 */
785 if (dev_priv->vbt.dsi.config->dual_link && bdb->version < 197) {
786 dev_priv->vbt.dsi.config->dl_dcs_cabc_ports = 0;
787 dev_priv->vbt.dsi.config->dl_dcs_backlight_ports = 0;
788 }
789
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530790 /* We have mandatory mipi config blocks. Initialize as generic panel */
Shobhit Kumarea9a6ba2014-02-28 11:18:46 +0530791 dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
Jani Nikula0f8689f2015-12-21 15:10:54 +0200792}
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530793
Jani Nikula5db72092016-01-05 15:50:51 +0200794/* Find the sequence block and size for the given panel. */
795static const u8 *
796find_panel_sequence_block(const struct bdb_mipi_sequence *sequence,
Jani Nikula2a33d932016-01-11 15:15:02 +0200797 u16 panel_id, u32 *seq_size)
Jani Nikula5db72092016-01-05 15:50:51 +0200798{
799 u32 total = get_blocksize(sequence);
800 const u8 *data = &sequence->data[0];
801 u8 current_id;
Jani Nikula2a33d932016-01-11 15:15:02 +0200802 u32 current_size;
803 int header_size = sequence->version >= 3 ? 5 : 3;
Jani Nikula5db72092016-01-05 15:50:51 +0200804 int index = 0;
805 int i;
806
Jani Nikula2a33d932016-01-11 15:15:02 +0200807 /* skip new block size */
808 if (sequence->version >= 3)
809 data += 4;
Jani Nikula5db72092016-01-05 15:50:51 +0200810
Jani Nikula2a33d932016-01-11 15:15:02 +0200811 for (i = 0; i < MAX_MIPI_CONFIGURATIONS && index < total; i++) {
812 if (index + header_size > total) {
813 DRM_ERROR("Invalid sequence block (header)\n");
814 return NULL;
815 }
816
817 current_id = *(data + index);
818 if (sequence->version >= 3)
819 current_size = *((const u32 *)(data + index + 1));
820 else
821 current_size = *((const u16 *)(data + index + 1));
822
823 index += header_size;
Jani Nikula5db72092016-01-05 15:50:51 +0200824
825 if (index + current_size > total) {
826 DRM_ERROR("Invalid sequence block\n");
827 return NULL;
828 }
829
830 if (current_id == panel_id) {
831 *seq_size = current_size;
832 return data + index;
833 }
834
835 index += current_size;
836 }
837
838 DRM_ERROR("Sequence block detected but no valid configuration\n");
839
840 return NULL;
841}
842
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200843static int goto_next_sequence(const u8 *data, int index, int total)
844{
845 u16 len;
846
847 /* Skip Sequence Byte. */
848 for (index = index + 1; index < total; index += len) {
849 u8 operation_byte = *(data + index);
850 index++;
851
852 switch (operation_byte) {
853 case MIPI_SEQ_ELEM_END:
854 return index;
855 case MIPI_SEQ_ELEM_SEND_PKT:
856 if (index + 4 > total)
857 return 0;
858
859 len = *((const u16 *)(data + index + 2)) + 4;
860 break;
861 case MIPI_SEQ_ELEM_DELAY:
862 len = 4;
863 break;
864 case MIPI_SEQ_ELEM_GPIO:
865 len = 2;
866 break;
Jani Nikulaf4d64932015-12-21 15:11:00 +0200867 case MIPI_SEQ_ELEM_I2C:
868 if (index + 7 > total)
869 return 0;
870 len = *(data + index + 6) + 7;
871 break;
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200872 default:
873 DRM_ERROR("Unknown operation byte\n");
874 return 0;
875 }
876 }
877
878 return 0;
879}
880
Jani Nikula2a33d932016-01-11 15:15:02 +0200881static int goto_next_sequence_v3(const u8 *data, int index, int total)
882{
883 int seq_end;
884 u16 len;
Jani Nikula6765bd62016-01-14 17:12:07 +0200885 u32 size_of_sequence;
Jani Nikula2a33d932016-01-11 15:15:02 +0200886
887 /*
888 * Could skip sequence based on Size of Sequence alone, but also do some
889 * checking on the structure.
890 */
891 if (total < 5) {
892 DRM_ERROR("Too small sequence size\n");
893 return 0;
894 }
895
Jani Nikula6765bd62016-01-14 17:12:07 +0200896 /* Skip Sequence Byte. */
897 index++;
898
899 /*
900 * Size of Sequence. Excludes the Sequence Byte and the size itself,
901 * includes MIPI_SEQ_ELEM_END byte, excludes the final MIPI_SEQ_END
902 * byte.
903 */
904 size_of_sequence = *((const uint32_t *)(data + index));
905 index += 4;
906
907 seq_end = index + size_of_sequence;
Jani Nikula2a33d932016-01-11 15:15:02 +0200908 if (seq_end > total) {
909 DRM_ERROR("Invalid sequence size\n");
910 return 0;
911 }
912
Jani Nikula6765bd62016-01-14 17:12:07 +0200913 for (; index < total; index += len) {
Jani Nikula2a33d932016-01-11 15:15:02 +0200914 u8 operation_byte = *(data + index);
915 index++;
916
917 if (operation_byte == MIPI_SEQ_ELEM_END) {
918 if (index != seq_end) {
919 DRM_ERROR("Invalid element structure\n");
920 return 0;
921 }
922 return index;
923 }
924
925 len = *(data + index);
926 index++;
927
928 /*
929 * FIXME: Would be nice to check elements like for v1/v2 in
930 * goto_next_sequence() above.
931 */
932 switch (operation_byte) {
933 case MIPI_SEQ_ELEM_SEND_PKT:
934 case MIPI_SEQ_ELEM_DELAY:
935 case MIPI_SEQ_ELEM_GPIO:
936 case MIPI_SEQ_ELEM_I2C:
937 case MIPI_SEQ_ELEM_SPI:
938 case MIPI_SEQ_ELEM_PMIC:
939 break;
940 default:
941 DRM_ERROR("Unknown operation byte %u\n",
942 operation_byte);
943 break;
944 }
945 }
946
947 return 0;
948}
949
Jani Nikula0f8689f2015-12-21 15:10:54 +0200950static void
951parse_mipi_sequence(struct drm_i915_private *dev_priv,
952 const struct bdb_header *bdb)
953{
Ville Syrjälä3e845c72016-04-08 16:28:12 +0300954 int panel_type = dev_priv->vbt.panel_type;
Jani Nikula0f8689f2015-12-21 15:10:54 +0200955 const struct bdb_mipi_sequence *sequence;
956 const u8 *seq_data;
Jani Nikula2a33d932016-01-11 15:15:02 +0200957 u32 seq_size;
Jani Nikula0f8689f2015-12-21 15:10:54 +0200958 u8 *data;
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200959 int index = 0;
Jani Nikula0f8689f2015-12-21 15:10:54 +0200960
961 /* Only our generic panel driver uses the sequence block. */
962 if (dev_priv->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
963 return;
964
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530965 sequence = find_section(bdb, BDB_MIPI_SEQUENCE);
966 if (!sequence) {
967 DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n");
968 return;
969 }
970
Jani Nikulacd67d222015-09-17 16:42:07 +0300971 /* Fail gracefully for forward incompatible sequence block. */
Jani Nikula2a33d932016-01-11 15:15:02 +0200972 if (sequence->version >= 4) {
973 DRM_ERROR("Unable to parse MIPI Sequence Block v%u\n",
974 sequence->version);
Jani Nikulacd67d222015-09-17 16:42:07 +0300975 return;
976 }
977
Jani Nikula2a33d932016-01-11 15:15:02 +0200978 DRM_DEBUG_DRIVER("Found MIPI sequence block v%u\n", sequence->version);
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530979
Jani Nikula5db72092016-01-05 15:50:51 +0200980 seq_data = find_panel_sequence_block(sequence, panel_type, &seq_size);
981 if (!seq_data)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530982 return;
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530983
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200984 data = kmemdup(seq_data, seq_size, GFP_KERNEL);
985 if (!data)
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530986 return;
987
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200988 /* Parse the sequences, store pointers to each sequence. */
989 for (;;) {
990 u8 seq_id = *(data + index);
991 if (seq_id == MIPI_SEQ_END)
992 break;
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530993
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200994 if (seq_id >= MIPI_SEQ_MAX) {
995 DRM_ERROR("Unknown sequence %u\n", seq_id);
Shobhit Kumard3b542f2014-04-14 11:00:34 +0530996 goto err;
997 }
998
Jani Nikula8d3ed2f2015-12-21 15:10:57 +0200999 dev_priv->vbt.dsi.sequence[seq_id] = data + index;
Shobhit Kumard3b542f2014-04-14 11:00:34 +05301000
Jani Nikula2a33d932016-01-11 15:15:02 +02001001 if (sequence->version >= 3)
1002 index = goto_next_sequence_v3(data, index, seq_size);
1003 else
1004 index = goto_next_sequence(data, index, seq_size);
Jani Nikula8d3ed2f2015-12-21 15:10:57 +02001005 if (!index) {
1006 DRM_ERROR("Invalid sequence %u\n", seq_id);
Shobhit Kumard3b542f2014-04-14 11:00:34 +05301007 goto err;
1008 }
Shobhit Kumard3b542f2014-04-14 11:00:34 +05301009 }
1010
Jani Nikula8d3ed2f2015-12-21 15:10:57 +02001011 dev_priv->vbt.dsi.data = data;
1012 dev_priv->vbt.dsi.size = seq_size;
1013 dev_priv->vbt.dsi.seq_version = sequence->version;
Shobhit Kumard3b542f2014-04-14 11:00:34 +05301014
Jani Nikula8d3ed2f2015-12-21 15:10:57 +02001015 DRM_DEBUG_DRIVER("MIPI related VBT parsing complete\n");
1016 return;
1017
1018err:
1019 kfree(data);
Rafael Barbalhoed3b6672014-07-24 15:16:12 +01001020 memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence));
Shobhit Kumard17c5442013-08-27 15:12:25 +03001021}
1022
Antti Koskipaa75067dd2015-07-10 14:10:55 +03001023static u8 translate_iboost(u8 val)
1024{
1025 static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */
1026
1027 if (val >= ARRAY_SIZE(mapping)) {
1028 DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val);
1029 return 0;
1030 }
1031 return mapping[val];
1032}
1033
Paulo Zanoni6acab152013-09-12 17:06:24 -03001034static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
Jani Nikuladcb58a42015-05-12 15:41:32 +03001035 const struct bdb_header *bdb)
Paulo Zanoni6acab152013-09-12 17:06:24 -03001036{
1037 union child_device_config *it, *child = NULL;
1038 struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
1039 uint8_t hdmi_level_shift;
1040 int i, j;
Paulo Zanoni554d6af2013-09-12 17:10:11 -03001041 bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
Xiong Zhang11c1b652015-08-17 16:04:04 +08001042 uint8_t aux_channel, ddc_pin;
Paulo Zanoni6acab152013-09-12 17:06:24 -03001043 /* Each DDI port can have more than one value on the "DVO Port" field,
1044 * so look for all the possible values for each port and abort if more
1045 * than one is found. */
Rodrigo Vivi2800e4c2015-08-07 17:35:21 -07001046 int dvo_ports[][3] = {
1047 {DVO_PORT_HDMIA, DVO_PORT_DPA, -1},
1048 {DVO_PORT_HDMIB, DVO_PORT_DPB, -1},
1049 {DVO_PORT_HDMIC, DVO_PORT_DPC, -1},
1050 {DVO_PORT_HDMID, DVO_PORT_DPD, -1},
1051 {DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE},
Paulo Zanoni6acab152013-09-12 17:06:24 -03001052 };
1053
1054 /* Find the child device to use, abort if more than one found. */
1055 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1056 it = dev_priv->vbt.child_dev + i;
1057
Rodrigo Vivi2800e4c2015-08-07 17:35:21 -07001058 for (j = 0; j < 3; j++) {
Paulo Zanoni6acab152013-09-12 17:06:24 -03001059 if (dvo_ports[port][j] == -1)
1060 break;
1061
1062 if (it->common.dvo_port == dvo_ports[port][j]) {
1063 if (child) {
1064 DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n",
1065 port_name(port));
1066 return;
1067 }
1068 child = it;
1069 }
1070 }
1071 }
1072 if (!child)
1073 return;
1074
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001075 aux_channel = child->raw[25];
Xiong Zhang11c1b652015-08-17 16:04:04 +08001076 ddc_pin = child->common.ddc_pin;
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001077
Ville Syrjälä78eb06c2013-11-01 20:32:07 +02001078 is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
1079 is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
1080 is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT;
1081 is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
1082 is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
Paulo Zanoni554d6af2013-09-12 17:10:11 -03001083
Paulo Zanoni311a2092013-09-12 17:12:18 -03001084 info->supports_dvi = is_dvi;
1085 info->supports_hdmi = is_hdmi;
1086 info->supports_dp = is_dp;
1087
Paulo Zanoni554d6af2013-09-12 17:10:11 -03001088 DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n",
1089 port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt);
1090
1091 if (is_edp && is_dvi)
1092 DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n",
1093 port_name(port));
1094 if (is_crt && port != PORT_E)
1095 DRM_DEBUG_KMS("Port %c is analog\n", port_name(port));
1096 if (is_crt && (is_dvi || is_dp))
1097 DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n",
1098 port_name(port));
1099 if (is_dvi && (port == PORT_A || port == PORT_E))
Masanari Iida9b134942014-08-06 22:31:28 +09001100 DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port));
Paulo Zanoni554d6af2013-09-12 17:10:11 -03001101 if (!is_dvi && !is_dp && !is_crt)
1102 DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n",
1103 port_name(port));
1104 if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E))
1105 DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001106
1107 if (is_dvi) {
Xiong Zhang11c1b652015-08-17 16:04:04 +08001108 if (port == PORT_E) {
1109 info->alternate_ddc_pin = ddc_pin;
1110 /* if DDIE share ddc pin with other port, then
1111 * dvi/hdmi couldn't exist on the shared port.
1112 * Otherwise they share the same ddc bin and system
1113 * couldn't communicate with them seperately. */
1114 if (ddc_pin == DDC_PIN_B) {
1115 dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0;
1116 dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0;
1117 } else if (ddc_pin == DDC_PIN_C) {
1118 dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0;
1119 dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0;
1120 } else if (ddc_pin == DDC_PIN_D) {
1121 dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0;
1122 dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0;
1123 }
1124 } else if (ddc_pin == DDC_PIN_B && port != PORT_B)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001125 DRM_DEBUG_KMS("Unexpected DDC pin for port B\n");
Xiong Zhang11c1b652015-08-17 16:04:04 +08001126 else if (ddc_pin == DDC_PIN_C && port != PORT_C)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001127 DRM_DEBUG_KMS("Unexpected DDC pin for port C\n");
Xiong Zhang11c1b652015-08-17 16:04:04 +08001128 else if (ddc_pin == DDC_PIN_D && port != PORT_D)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001129 DRM_DEBUG_KMS("Unexpected DDC pin for port D\n");
1130 }
1131
1132 if (is_dp) {
Rodrigo Vivi500ea702015-08-07 17:01:16 -07001133 if (port == PORT_E) {
1134 info->alternate_aux_channel = aux_channel;
1135 /* if DDIE share aux channel with other port, then
1136 * DP couldn't exist on the shared port. Otherwise
1137 * they share the same aux channel and system
1138 * couldn't communicate with them seperately. */
1139 if (aux_channel == DP_AUX_A)
1140 dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0;
1141 else if (aux_channel == DP_AUX_B)
1142 dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0;
1143 else if (aux_channel == DP_AUX_C)
1144 dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0;
1145 else if (aux_channel == DP_AUX_D)
1146 dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0;
1147 }
1148 else if (aux_channel == DP_AUX_A && port != PORT_A)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001149 DRM_DEBUG_KMS("Unexpected AUX channel for port A\n");
Rodrigo Vivi500ea702015-08-07 17:01:16 -07001150 else if (aux_channel == DP_AUX_B && port != PORT_B)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001151 DRM_DEBUG_KMS("Unexpected AUX channel for port B\n");
Rodrigo Vivi500ea702015-08-07 17:01:16 -07001152 else if (aux_channel == DP_AUX_C && port != PORT_C)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001153 DRM_DEBUG_KMS("Unexpected AUX channel for port C\n");
Rodrigo Vivi500ea702015-08-07 17:01:16 -07001154 else if (aux_channel == DP_AUX_D && port != PORT_D)
Paulo Zanoni6bf19e72013-09-12 17:07:55 -03001155 DRM_DEBUG_KMS("Unexpected AUX channel for port D\n");
1156 }
1157
Paulo Zanoni6acab152013-09-12 17:06:24 -03001158 if (bdb->version >= 158) {
1159 /* The VBT HDMI level shift values match the table we have. */
1160 hdmi_level_shift = child->raw[7] & 0xF;
Damien Lespiauce4dd492014-08-01 11:07:54 +01001161 DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
1162 port_name(port),
1163 hdmi_level_shift);
1164 info->hdmi_level_shift = hdmi_level_shift;
Paulo Zanoni6acab152013-09-12 17:06:24 -03001165 }
Antti Koskipaa75067dd2015-07-10 14:10:55 +03001166
1167 /* Parse the I_boost config for SKL and above */
Shubhangi Shrivastava4e27bd52016-03-31 16:11:46 +05301168 if (bdb->version >= 196 && child->common.iboost) {
Antti Koskipaa75067dd2015-07-10 14:10:55 +03001169 info->dp_boost_level = translate_iboost(child->common.iboost_level & 0xF);
1170 DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n",
1171 port_name(port), info->dp_boost_level);
1172 info->hdmi_boost_level = translate_iboost(child->common.iboost_level >> 4);
1173 DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n",
1174 port_name(port), info->hdmi_boost_level);
1175 }
Paulo Zanoni6acab152013-09-12 17:06:24 -03001176}
1177
1178static void parse_ddi_ports(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +03001179 const struct bdb_header *bdb)
Paulo Zanoni6acab152013-09-12 17:06:24 -03001180{
Paulo Zanoni6acab152013-09-12 17:06:24 -03001181 enum port port;
1182
Jani Nikula98f3a1d2015-12-16 15:04:20 +02001183 if (!HAS_DDI(dev_priv))
Paulo Zanoni6acab152013-09-12 17:06:24 -03001184 return;
1185
1186 if (!dev_priv->vbt.child_dev_num)
1187 return;
1188
1189 if (bdb->version < 155)
1190 return;
1191
1192 for (port = PORT_A; port < I915_MAX_PORTS; port++)
1193 parse_ddi_port(dev_priv, port, bdb);
1194}
1195
Shobhit Kumard17c5442013-08-27 15:12:25 +03001196static void
Zhao Yakui6363ee62009-11-24 09:48:44 +08001197parse_device_mapping(struct drm_i915_private *dev_priv,
Jani Nikuladcb58a42015-05-12 15:41:32 +03001198 const struct bdb_header *bdb)
Zhao Yakui6363ee62009-11-24 09:48:44 +08001199{
Jani Nikulae8ef3b42015-04-15 15:18:28 +03001200 const struct bdb_general_definitions *p_defs;
1201 const union child_device_config *p_child;
1202 union child_device_config *child_dev_ptr;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001203 int i, child_device_num, count;
David Weinehalle2d6cf72015-08-21 16:52:01 +03001204 u8 expected_size;
1205 u16 block_size;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001206
1207 p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
1208 if (!p_defs) {
Chris Wilson44834a62010-08-19 16:09:23 +01001209 DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +08001210 return;
1211 }
Ville Syrjälä7244f302015-12-14 18:23:47 +02001212 if (bdb->version < 106) {
1213 expected_size = 22;
Chris Wilsonfa051782016-06-01 18:08:43 +01001214 } else if (bdb->version < 111) {
Ville Syrjälä52b69c82015-12-14 18:23:46 +02001215 expected_size = 27;
1216 } else if (bdb->version < 195) {
1217 BUILD_BUG_ON(sizeof(struct old_child_dev_config) != 33);
David Weinehalle2d6cf72015-08-21 16:52:01 +03001218 expected_size = sizeof(struct old_child_dev_config);
1219 } else if (bdb->version == 195) {
1220 expected_size = 37;
1221 } else if (bdb->version <= 197) {
1222 expected_size = 38;
1223 } else {
1224 expected_size = 38;
1225 BUILD_BUG_ON(sizeof(*p_child) < 38);
1226 DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n",
1227 bdb->version, expected_size);
1228 }
1229
David Weinehalle2d6cf72015-08-21 16:52:01 +03001230 /* Flag an error for unexpected size, but continue anyway. */
1231 if (p_defs->child_dev_size != expected_size)
1232 DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n",
1233 p_defs->child_dev_size, expected_size, bdb->version);
1234
Ville Syrjälä52b69c82015-12-14 18:23:46 +02001235 /* The legacy sized child device config is the minimum we need. */
1236 if (p_defs->child_dev_size < sizeof(struct old_child_dev_config)) {
1237 DRM_DEBUG_KMS("Child device config size %u is too small.\n",
1238 p_defs->child_dev_size);
1239 return;
1240 }
1241
Zhao Yakui6363ee62009-11-24 09:48:44 +08001242 /* get the block size of general definitions */
1243 block_size = get_blocksize(p_defs);
1244 /* get the number of child device */
1245 child_device_num = (block_size - sizeof(*p_defs)) /
Ville Syrjälä90e4f152015-03-25 18:45:58 +02001246 p_defs->child_dev_size;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001247 count = 0;
1248 /* get the number of child device that is present */
1249 for (i = 0; i < child_device_num; i++) {
Ville Syrjälä90e4f152015-03-25 18:45:58 +02001250 p_child = child_device_ptr(p_defs, i);
Paulo Zanoni768f69c2013-09-11 18:02:47 -03001251 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001252 /* skip the device block if device type is invalid */
1253 continue;
1254 }
1255 count++;
1256 }
1257 if (!count) {
Akshay Joshi0206e352011-08-16 15:34:10 -04001258 DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
Zhao Yakui6363ee62009-11-24 09:48:44 +08001259 return;
1260 }
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001261 dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL);
1262 if (!dev_priv->vbt.child_dev) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001263 DRM_DEBUG_KMS("No memory space for child device\n");
1264 return;
1265 }
1266
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001267 dev_priv->vbt.child_dev_num = count;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001268 count = 0;
1269 for (i = 0; i < child_device_num; i++) {
Ville Syrjälä90e4f152015-03-25 18:45:58 +02001270 p_child = child_device_ptr(p_defs, i);
Paulo Zanoni768f69c2013-09-11 18:02:47 -03001271 if (!p_child->common.device_type) {
Zhao Yakui6363ee62009-11-24 09:48:44 +08001272 /* skip the device block if device type is invalid */
1273 continue;
1274 }
Shobhit Kumar3e6bd012014-05-27 19:33:59 +05301275
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001276 child_dev_ptr = dev_priv->vbt.child_dev + count;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001277 count++;
David Weinehalle2d6cf72015-08-21 16:52:01 +03001278
1279 /*
1280 * Copy as much as we know (sizeof) and is available
1281 * (child_dev_size) of the child device. Accessing the data must
1282 * depend on VBT version.
1283 */
1284 memcpy(child_dev_ptr, p_child,
1285 min_t(size_t, p_defs->child_dev_size, sizeof(*p_child)));
Shubhangi Shrivastava4e27bd52016-03-31 16:11:46 +05301286
1287 /*
1288 * copied full block, now init values when they are not
1289 * available in current version
1290 */
1291 if (bdb->version < 196) {
1292 /* Set default values for bits added from v196 */
1293 child_dev_ptr->common.iboost = 0;
1294 child_dev_ptr->common.hpd_invert = 0;
1295 }
1296
1297 if (bdb->version < 192)
1298 child_dev_ptr->common.lspcon = 0;
Zhao Yakui6363ee62009-11-24 09:48:44 +08001299 }
1300 return;
1301}
Chris Wilson44834a62010-08-19 16:09:23 +01001302
Simon Que6a040022010-09-30 09:36:39 +01001303static void
1304init_vbt_defaults(struct drm_i915_private *dev_priv)
1305{
Paulo Zanoni6acab152013-09-12 17:06:24 -03001306 enum port port;
Bryan Freed9a4114f2011-01-12 13:38:39 -08001307
Jani Nikula988c7012015-03-27 00:20:19 +02001308 dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
Simon Que6a040022010-09-30 09:36:39 +01001309
Jani Nikula56c4b632014-06-17 15:47:05 +03001310 /* Default to having backlight */
1311 dev_priv->vbt.backlight.present = true;
1312
Simon Que6a040022010-09-30 09:36:39 +01001313 /* LFP panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001314 dev_priv->vbt.lvds_dither = 1;
1315 dev_priv->vbt.lvds_vbt = 0;
Simon Que6a040022010-09-30 09:36:39 +01001316
1317 /* SDVO panel data */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001318 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
Simon Que6a040022010-09-30 09:36:39 +01001319
1320 /* general features */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001321 dev_priv->vbt.int_tv_support = 1;
1322 dev_priv->vbt.int_crt_support = 1;
Bryan Freed9a4114f2011-01-12 13:38:39 -08001323
1324 /* Default to using SSC */
Rodrigo Vivi41aa3442013-05-09 20:03:18 -03001325 dev_priv->vbt.lvds_use_ssc = 1;
Duncan Laurief69e5152013-11-13 17:59:43 -08001326 /*
1327 * Core/SandyBridge/IvyBridge use alternative (120MHz) reference
1328 * clock for LVDS.
1329 */
Jani Nikula98f3a1d2015-12-16 15:04:20 +02001330 dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev_priv,
1331 !HAS_PCH_SPLIT(dev_priv));
Ville Syrjäläe91e9412013-12-09 18:54:16 +02001332 DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001333
1334 for (port = PORT_A; port < I915_MAX_PORTS; port++) {
Paulo Zanoni311a2092013-09-12 17:12:18 -03001335 struct ddi_vbt_port_info *info =
1336 &dev_priv->vbt.ddi_port_info[port];
1337
Damien Lespiauce4dd492014-08-01 11:07:54 +01001338 info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN;
Paulo Zanoni311a2092013-09-12 17:12:18 -03001339
1340 info->supports_dvi = (port != PORT_A && port != PORT_E);
1341 info->supports_hdmi = info->supports_dvi;
1342 info->supports_dp = (port != PORT_E);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001343 }
Simon Que6a040022010-09-30 09:36:39 +01001344}
1345
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001346static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt)
1347{
1348 const void *_vbt = vbt;
1349
1350 return _vbt + vbt->bdb_offset;
1351}
1352
Jani Nikulaf0067a32015-12-15 13:16:15 +02001353/**
1354 * intel_bios_is_valid_vbt - does the given buffer contain a valid VBT
1355 * @buf: pointer to a buffer to validate
1356 * @size: size of the buffer
1357 *
1358 * Returns true on valid VBT.
1359 */
1360bool intel_bios_is_valid_vbt(const void *buf, size_t size)
Chris Wilson3dd4e842014-04-18 18:04:22 -03001361{
Jani Nikulaf0067a32015-12-15 13:16:15 +02001362 const struct vbt_header *vbt = buf;
Jani Nikuladcb58a42015-05-12 15:41:32 +03001363 const struct bdb_header *bdb;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001364
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001365 if (!vbt)
Jani Nikulaf0067a32015-12-15 13:16:15 +02001366 return false;
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001367
Jani Nikulaf0067a32015-12-15 13:16:15 +02001368 if (sizeof(struct vbt_header) > size) {
Chris Wilson3dd4e842014-04-18 18:04:22 -03001369 DRM_DEBUG_DRIVER("VBT header incomplete\n");
Jani Nikulaf0067a32015-12-15 13:16:15 +02001370 return false;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001371 }
1372
1373 if (memcmp(vbt->signature, "$VBT", 4)) {
1374 DRM_DEBUG_DRIVER("VBT invalid signature\n");
Jani Nikulaf0067a32015-12-15 13:16:15 +02001375 return false;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001376 }
1377
Jani Nikulaf0067a32015-12-15 13:16:15 +02001378 if (vbt->bdb_offset + sizeof(struct bdb_header) > size) {
Chris Wilson3dd4e842014-04-18 18:04:22 -03001379 DRM_DEBUG_DRIVER("BDB header incomplete\n");
Jani Nikulaf0067a32015-12-15 13:16:15 +02001380 return false;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001381 }
1382
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001383 bdb = get_bdb_header(vbt);
Jani Nikulaf0067a32015-12-15 13:16:15 +02001384 if (vbt->bdb_offset + bdb->bdb_size > size) {
Chris Wilson3dd4e842014-04-18 18:04:22 -03001385 DRM_DEBUG_DRIVER("BDB incomplete\n");
Jani Nikulaf0067a32015-12-15 13:16:15 +02001386 return false;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001387 }
1388
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001389 return vbt;
Chris Wilson3dd4e842014-04-18 18:04:22 -03001390}
1391
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001392static const struct vbt_header *find_vbt(void __iomem *bios, size_t size)
Jani Nikulab34a9912015-05-13 15:34:04 +03001393{
Jani Nikulab34a9912015-05-13 15:34:04 +03001394 size_t i;
1395
1396 /* Scour memory looking for the VBT signature. */
1397 for (i = 0; i + 4 < size; i++) {
Jani Nikulaf0067a32015-12-15 13:16:15 +02001398 void *vbt;
Williams, Dan J115719f2015-10-12 21:12:57 +00001399
Jani Nikulaf0067a32015-12-15 13:16:15 +02001400 if (ioread32(bios + i) != *((const u32 *) "$VBT"))
1401 continue;
1402
1403 /*
1404 * This is the one place where we explicitly discard the address
1405 * space (__iomem) of the BIOS/VBT.
1406 */
1407 vbt = (void __force *) bios + i;
1408 if (intel_bios_is_valid_vbt(vbt, size - i))
1409 return vbt;
1410
1411 break;
Jani Nikulab34a9912015-05-13 15:34:04 +03001412 }
1413
Jani Nikulaf0067a32015-12-15 13:16:15 +02001414 return NULL;
Jani Nikulab34a9912015-05-13 15:34:04 +03001415}
1416
Jesse Barnes79e53942008-11-07 14:24:08 -08001417/**
Jani Nikula8b8e1a82015-12-14 12:50:49 +02001418 * intel_bios_init - find VBT and initialize settings from the BIOS
Jani Nikuladd979502015-12-21 15:10:52 +02001419 * @dev_priv: i915 device instance
Jesse Barnes79e53942008-11-07 14:24:08 -08001420 *
1421 * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers
1422 * to appropriate values.
1423 *
Jesse Barnes79e53942008-11-07 14:24:08 -08001424 * Returns 0 on success, nonzero on failure.
1425 */
Dan Carpenter0317c6c2012-06-27 12:10:30 +03001426int
Jani Nikula98f3a1d2015-12-16 15:04:20 +02001427intel_bios_init(struct drm_i915_private *dev_priv)
Jesse Barnes79e53942008-11-07 14:24:08 -08001428{
Chris Wilson91c8a322016-07-05 10:40:23 +01001429 struct pci_dev *pdev = dev_priv->drm.pdev;
Jani Nikulaf0067a32015-12-15 13:16:15 +02001430 const struct vbt_header *vbt = dev_priv->opregion.vbt;
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001431 const struct bdb_header *bdb;
Chris Wilson44834a62010-08-19 16:09:23 +01001432 u8 __iomem *bios = NULL;
Jesse Barnes79e53942008-11-07 14:24:08 -08001433
Jani Nikula98f3a1d2015-12-16 15:04:20 +02001434 if (HAS_PCH_NOP(dev_priv))
Ben Widawskyab5c6082013-04-05 13:12:41 -07001435 return -ENODEV;
1436
Simon Que6a040022010-09-30 09:36:39 +01001437 init_vbt_defaults(dev_priv);
Chris Wilsonf899fc62010-07-20 15:44:45 -07001438
Jani Nikulaf0067a32015-12-15 13:16:15 +02001439 if (!vbt) {
Jani Nikulab34a9912015-05-13 15:34:04 +03001440 size_t size;
Chris Wilson44834a62010-08-19 16:09:23 +01001441
1442 bios = pci_map_rom(pdev, &size);
1443 if (!bios)
1444 return -1;
1445
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001446 vbt = find_vbt(bios, size);
1447 if (!vbt) {
Chris Wilson44834a62010-08-19 16:09:23 +01001448 pci_unmap_rom(pdev, bios);
1449 return -1;
1450 }
Jani Nikulae2051c42015-12-15 13:14:52 +02001451
1452 DRM_DEBUG_KMS("Found valid VBT in PCI ROM\n");
Chris Wilson44834a62010-08-19 16:09:23 +01001453 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001454
Jani Nikulacaf37fa2015-12-14 12:50:47 +02001455 bdb = get_bdb_header(vbt);
1456
Jani Nikula3556dd42015-12-16 15:04:19 +02001457 DRM_DEBUG_KMS("VBT signature \"%.*s\", BDB version %d\n",
1458 (int)sizeof(vbt->signature), vbt->signature, bdb->version);
Jani Nikulae2051c42015-12-15 13:14:52 +02001459
Jesse Barnes79e53942008-11-07 14:24:08 -08001460 /* Grab useful general definitions */
1461 parse_general_features(dev_priv, bdb);
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +02001462 parse_general_definitions(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +08001463 parse_lfp_panel_data(dev_priv, bdb);
Jani Nikulaf00076d2013-12-14 20:38:29 -02001464 parse_lfp_backlight(dev_priv, bdb);
Ma Ling88631702009-05-13 11:19:55 +08001465 parse_sdvo_panel_data(dev_priv, bdb);
yakui_zhao9b9d1722009-05-31 17:17:17 +08001466 parse_sdvo_device_mapping(dev_priv, bdb);
Zhao Yakui6363ee62009-11-24 09:48:44 +08001467 parse_device_mapping(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +08001468 parse_driver_features(dev_priv, bdb);
Zhenyu Wang500a8cc2010-01-13 11:19:52 +08001469 parse_edp(dev_priv, bdb);
Rodrigo Vivibfd7ebd2014-11-14 08:52:30 -08001470 parse_psr(dev_priv, bdb);
Jani Nikula0f8689f2015-12-21 15:10:54 +02001471 parse_mipi_config(dev_priv, bdb);
1472 parse_mipi_sequence(dev_priv, bdb);
Paulo Zanoni6acab152013-09-12 17:06:24 -03001473 parse_ddi_ports(dev_priv, bdb);
Zhenyu Wang32f9d652009-07-24 01:00:32 +08001474
Chris Wilson44834a62010-08-19 16:09:23 +01001475 if (bios)
1476 pci_unmap_rom(pdev, bios);
Jesse Barnes79e53942008-11-07 14:24:08 -08001477
1478 return 0;
1479}
Jani Nikula3bdd14d2016-03-16 12:43:29 +02001480
1481/**
1482 * intel_bios_is_tv_present - is integrated TV present in VBT
1483 * @dev_priv: i915 device instance
1484 *
1485 * Return true if TV is present. If no child devices were parsed from VBT,
1486 * assume TV is present.
1487 */
1488bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv)
1489{
1490 union child_device_config *p_child;
1491 int i;
1492
1493 if (!dev_priv->vbt.int_tv_support)
1494 return false;
1495
1496 if (!dev_priv->vbt.child_dev_num)
1497 return true;
1498
1499 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1500 p_child = dev_priv->vbt.child_dev + i;
1501 /*
1502 * If the device type is not TV, continue.
1503 */
1504 switch (p_child->old.device_type) {
1505 case DEVICE_TYPE_INT_TV:
1506 case DEVICE_TYPE_TV:
1507 case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
1508 break;
1509 default:
1510 continue;
1511 }
1512 /* Only when the addin_offset is non-zero, it is regarded
1513 * as present.
1514 */
1515 if (p_child->old.addin_offset)
1516 return true;
1517 }
1518
1519 return false;
1520}
Jani Nikula5a69d132016-03-16 12:43:30 +02001521
1522/**
1523 * intel_bios_is_lvds_present - is LVDS present in VBT
1524 * @dev_priv: i915 device instance
1525 * @i2c_pin: i2c pin for LVDS if present
1526 *
1527 * Return true if LVDS is present. If no child devices were parsed from VBT,
1528 * assume LVDS is present.
1529 */
1530bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin)
1531{
1532 int i;
1533
1534 if (!dev_priv->vbt.child_dev_num)
1535 return true;
1536
1537 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1538 union child_device_config *uchild = dev_priv->vbt.child_dev + i;
1539 struct old_child_dev_config *child = &uchild->old;
1540
1541 /* If the device type is not LFP, continue.
1542 * We have to check both the new identifiers as well as the
1543 * old for compatibility with some BIOSes.
1544 */
1545 if (child->device_type != DEVICE_TYPE_INT_LFP &&
1546 child->device_type != DEVICE_TYPE_LFP)
1547 continue;
1548
1549 if (intel_gmbus_is_valid_pin(dev_priv, child->i2c_pin))
1550 *i2c_pin = child->i2c_pin;
1551
1552 /* However, we cannot trust the BIOS writers to populate
1553 * the VBT correctly. Since LVDS requires additional
1554 * information from AIM blocks, a non-zero addin offset is
1555 * a good indicator that the LVDS is actually present.
1556 */
1557 if (child->addin_offset)
1558 return true;
1559
1560 /* But even then some BIOS writers perform some black magic
1561 * and instantiate the device without reference to any
1562 * additional data. Trust that if the VBT was written into
1563 * the OpRegion then they have validated the LVDS's existence.
1564 */
1565 if (dev_priv->opregion.vbt)
1566 return true;
1567 }
1568
1569 return false;
1570}
Jani Nikula951d9ef2016-03-16 12:43:31 +02001571
1572/**
Ville Syrjälä22f350422016-06-03 12:17:43 +03001573 * intel_bios_is_port_present - is the specified digital port present
1574 * @dev_priv: i915 device instance
1575 * @port: port to check
1576 *
1577 * Return true if the device in %port is present.
1578 */
1579bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port)
1580{
1581 static const struct {
1582 u16 dp, hdmi;
1583 } port_mapping[] = {
1584 [PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
1585 [PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
1586 [PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
1587 [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
1588 };
1589 int i;
1590
1591 /* FIXME maybe deal with port A as well? */
1592 if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping))
1593 return false;
1594
1595 if (!dev_priv->vbt.child_dev_num)
1596 return false;
1597
1598 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1599 const union child_device_config *p_child =
1600 &dev_priv->vbt.child_dev[i];
1601 if ((p_child->common.dvo_port == port_mapping[port].dp ||
1602 p_child->common.dvo_port == port_mapping[port].hdmi) &&
1603 (p_child->common.device_type & (DEVICE_TYPE_TMDS_DVI_SIGNALING |
1604 DEVICE_TYPE_DISPLAYPORT_OUTPUT)))
1605 return true;
1606 }
1607
1608 return false;
1609}
1610
1611/**
Jani Nikula951d9ef2016-03-16 12:43:31 +02001612 * intel_bios_is_port_edp - is the device in given port eDP
1613 * @dev_priv: i915 device instance
1614 * @port: port to check
1615 *
1616 * Return true if the device in %port is eDP.
1617 */
1618bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
1619{
1620 union child_device_config *p_child;
1621 static const short port_mapping[] = {
1622 [PORT_B] = DVO_PORT_DPB,
1623 [PORT_C] = DVO_PORT_DPC,
1624 [PORT_D] = DVO_PORT_DPD,
1625 [PORT_E] = DVO_PORT_DPE,
1626 };
1627 int i;
1628
1629 if (!dev_priv->vbt.child_dev_num)
1630 return false;
1631
1632 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1633 p_child = dev_priv->vbt.child_dev + i;
1634
1635 if (p_child->common.dvo_port == port_mapping[port] &&
1636 (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) ==
1637 (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
1638 return true;
1639 }
1640
1641 return false;
1642}
Jani Nikula7137aec2016-03-16 12:43:32 +02001643
Ville Syrjäläd6199252016-05-04 14:45:22 +03001644bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port)
1645{
1646 static const struct {
1647 u16 dp, hdmi;
1648 } port_mapping[] = {
1649 /*
1650 * Buggy VBTs may declare DP ports as having
1651 * HDMI type dvo_port :( So let's check both.
1652 */
1653 [PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
1654 [PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
1655 [PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
1656 [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
1657 };
1658 int i;
1659
1660 if (port == PORT_A || port >= ARRAY_SIZE(port_mapping))
1661 return false;
1662
1663 if (!dev_priv->vbt.child_dev_num)
1664 return false;
1665
1666 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1667 const union child_device_config *p_child =
1668 &dev_priv->vbt.child_dev[i];
1669
1670 if ((p_child->common.dvo_port == port_mapping[port].dp ||
1671 p_child->common.dvo_port == port_mapping[port].hdmi) &&
1672 (p_child->common.device_type & DEVICE_TYPE_DP_DUAL_MODE_BITS) ==
1673 (DEVICE_TYPE_DP_DUAL_MODE & DEVICE_TYPE_DP_DUAL_MODE_BITS))
1674 return true;
1675 }
1676
1677 return false;
1678}
1679
Jani Nikula7137aec2016-03-16 12:43:32 +02001680/**
1681 * intel_bios_is_dsi_present - is DSI present in VBT
1682 * @dev_priv: i915 device instance
1683 * @port: port for DSI if present
1684 *
1685 * Return true if DSI is present, and return the port in %port.
1686 */
1687bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv,
1688 enum port *port)
1689{
1690 union child_device_config *p_child;
1691 u8 dvo_port;
1692 int i;
1693
1694 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1695 p_child = dev_priv->vbt.child_dev + i;
1696
1697 if (!(p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT))
1698 continue;
1699
1700 dvo_port = p_child->common.dvo_port;
1701
1702 switch (dvo_port) {
1703 case DVO_PORT_MIPIA:
1704 case DVO_PORT_MIPIC:
Jani Nikula7caaef32016-03-16 12:43:34 +02001705 if (port)
1706 *port = dvo_port - DVO_PORT_MIPIA;
Jani Nikula7137aec2016-03-16 12:43:32 +02001707 return true;
1708 case DVO_PORT_MIPIB:
1709 case DVO_PORT_MIPID:
1710 DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n",
1711 port_name(dvo_port - DVO_PORT_MIPIA));
1712 break;
1713 }
1714 }
1715
1716 return false;
1717}
Shubhangi Shrivastavad252bf62016-03-31 16:11:47 +05301718
1719/**
1720 * intel_bios_is_port_hpd_inverted - is HPD inverted for %port
1721 * @dev_priv: i915 device instance
1722 * @port: port to check
1723 *
1724 * Return true if HPD should be inverted for %port.
1725 */
1726bool
1727intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
1728 enum port port)
1729{
1730 int i;
1731
1732 if (WARN_ON_ONCE(!IS_BROXTON(dev_priv)))
1733 return false;
1734
1735 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1736 if (!dev_priv->vbt.child_dev[i].common.hpd_invert)
1737 continue;
1738
1739 switch (dev_priv->vbt.child_dev[i].common.dvo_port) {
1740 case DVO_PORT_DPA:
1741 case DVO_PORT_HDMIA:
1742 if (port == PORT_A)
1743 return true;
1744 break;
1745 case DVO_PORT_DPB:
1746 case DVO_PORT_HDMIB:
1747 if (port == PORT_B)
1748 return true;
1749 break;
1750 case DVO_PORT_DPC:
1751 case DVO_PORT_HDMIC:
1752 if (port == PORT_C)
1753 return true;
1754 break;
1755 default:
1756 break;
1757 }
1758 }
1759
1760 return false;
1761}