2 * Copyright © 2006 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
28 #include <drm/drm_dp_helper.h>
29 #include <drm/i915_drm.h>
32 #define _INTEL_BIOS_PRIVATE
33 #include "intel_vbt_defs.h"
36 * DOC: Video BIOS Table (VBT)
38 * The Video BIOS Table, or VBT, provides platform and board specific
39 * configuration information to the driver that is not discoverable or available
40 * through other means. The configuration is mostly related to display
41 * hardware. The VBT is available via the ACPI OpRegion or, on older systems, in
44 * The VBT consists of a VBT Header (defined as &struct vbt_header), a BDB
45 * Header (&struct bdb_header), and a number of BIOS Data Blocks (BDB) that
46 * contain the actual configuration information. The VBT Header, and thus the
47 * VBT, begins with "$VBT" signature. The VBT Header contains the offset of the
48 * BDB Header. The data blocks are concatenated after the BDB Header. The data
49 * blocks have a 1-byte Block ID, 2-byte Block Size, and Block Size bytes of
50 * data. (Block 53, the MIPI Sequence Block is an exception.)
52 * The driver parses the VBT during load. The relevant information is stored in
53 * driver private data for ease of use, and the actual VBT is not read after
57 #define SLAVE_ADDR1 0x70
58 #define SLAVE_ADDR2 0x72
60 /* Get BDB block size given a pointer to Block ID. */
61 static u32 _get_blocksize(const u8 *block_base)
63 /* The MIPI Sequence Block v3+ has a separate size field. */
64 if (*block_base == BDB_MIPI_SEQUENCE && *(block_base + 3) >= 3)
65 return *((const u32 *)(block_base + 4));
67 return *((const u16 *)(block_base + 1));
70 /* Get BDB block size give a pointer to data after Block ID and Block Size. */
71 static u32 get_blocksize(const void *block_data)
73 return _get_blocksize(block_data - 3);
77 find_section(const void *_bdb, int section_id)
79 const struct bdb_header *bdb = _bdb;
80 const u8 *base = _bdb;
82 u32 total, current_size;
85 /* skip to first section */
86 index += bdb->header_size;
87 total = bdb->bdb_size;
89 /* walk the sections looking for section_id */
90 while (index + 3 < total) {
91 current_id = *(base + index);
92 current_size = _get_blocksize(base + index);
95 if (index + current_size > total)
98 if (current_id == section_id)
101 index += current_size;
108 fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
109 const struct lvds_dvo_timing *dvo_timing)
111 panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
112 dvo_timing->hactive_lo;
113 panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
114 ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
115 panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
116 ((dvo_timing->hsync_pulse_width_hi << 8) |
117 dvo_timing->hsync_pulse_width_lo);
118 panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
119 ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
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_hi << 4) | dvo_timing->vsync_off_lo);
125 panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
126 ((dvo_timing->vsync_pulse_width_hi << 4) |
127 dvo_timing->vsync_pulse_width_lo);
128 panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
129 ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
130 panel_fixed_mode->clock = dvo_timing->clock * 10;
131 panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
133 if (dvo_timing->hsync_positive)
134 panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
136 panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
138 if (dvo_timing->vsync_positive)
139 panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
141 panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
143 panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) |
144 dvo_timing->himage_lo;
145 panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) |
146 dvo_timing->vimage_lo;
148 /* Some VBTs have bogus h/vtotal values */
149 if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
150 panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
151 if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
152 panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
154 drm_mode_set_name(panel_fixed_mode);
157 static const struct lvds_dvo_timing *
158 get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data,
159 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs,
163 * the size of fp_timing varies on the different platform.
164 * So calculate the DVO timing relative offset in LVDS data
165 * entry to get the DVO timing entry
169 lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset -
170 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset;
171 int dvo_timing_offset =
172 lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset -
173 lvds_lfp_data_ptrs->ptr[0].fp_timing_offset;
174 char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index;
176 return (struct lvds_dvo_timing *)(entry + dvo_timing_offset);
179 /* get lvds_fp_timing entry
180 * this function may return NULL if the corresponding entry is invalid
182 static const struct lvds_fp_timing *
183 get_lvds_fp_timing(const struct bdb_header *bdb,
184 const struct bdb_lvds_lfp_data *data,
185 const struct bdb_lvds_lfp_data_ptrs *ptrs,
188 size_t data_ofs = (const u8 *)data - (const u8 *)bdb;
189 u16 data_size = ((const u16 *)data)[-1]; /* stored in header */
192 if (index >= ARRAY_SIZE(ptrs->ptr))
194 ofs = ptrs->ptr[index].fp_timing_offset;
195 if (ofs < data_ofs ||
196 ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size)
198 return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
201 /* Try to find integrated panel data */
203 parse_lfp_panel_data(struct drm_i915_private *dev_priv,
204 const struct bdb_header *bdb)
206 const struct bdb_lvds_options *lvds_options;
207 const struct bdb_lvds_lfp_data *lvds_lfp_data;
208 const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
209 const struct lvds_dvo_timing *panel_dvo_timing;
210 const struct lvds_fp_timing *fp_timing;
211 struct drm_display_mode *panel_fixed_mode;
216 lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
220 dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
222 ret = intel_opregion_get_panel_type(dev_priv);
226 DRM_DEBUG_KMS("Panel type: %d (OpRegion)\n", panel_type);
228 if (lvds_options->panel_type > 0xf) {
229 DRM_DEBUG_KMS("Invalid VBT panel type 0x%x\n",
230 lvds_options->panel_type);
233 panel_type = lvds_options->panel_type;
234 DRM_DEBUG_KMS("Panel type: %d (VBT)\n", panel_type);
237 dev_priv->vbt.panel_type = panel_type;
239 drrs_mode = (lvds_options->dps_panel_type_bits
240 >> (panel_type * 2)) & MODE_MASK;
242 * VBT has static DRRS = 0 and seamless DRRS = 2.
243 * The below piece of code is required to adjust vbt.drrs_type
244 * to match the enum drrs_support_type.
248 dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT;
249 DRM_DEBUG_KMS("DRRS supported mode is static\n");
252 dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT;
253 DRM_DEBUG_KMS("DRRS supported mode is seamless\n");
256 dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
257 DRM_DEBUG_KMS("DRRS not supported (VBT input)\n");
261 lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
265 lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
266 if (!lvds_lfp_data_ptrs)
269 panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
273 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
274 if (!panel_fixed_mode)
277 fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
279 dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
281 DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
282 drm_mode_debug_printmodeline(panel_fixed_mode);
284 fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
288 /* check the resolution, just to be sure */
289 if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
290 fp_timing->y_res == panel_fixed_mode->vdisplay) {
291 dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
292 DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
293 dev_priv->vbt.bios_lvds_val);
299 parse_lfp_backlight(struct drm_i915_private *dev_priv,
300 const struct bdb_header *bdb)
302 const struct bdb_lfp_backlight_data *backlight_data;
303 const struct bdb_lfp_backlight_data_entry *entry;
304 int panel_type = dev_priv->vbt.panel_type;
306 backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT);
310 if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
311 DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n",
312 backlight_data->entry_size);
316 entry = &backlight_data->data[panel_type];
318 dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
319 if (!dev_priv->vbt.backlight.present) {
320 DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n",
325 dev_priv->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
326 if (bdb->version >= 191 &&
327 get_blocksize(backlight_data) >= sizeof(*backlight_data)) {
328 const struct bdb_lfp_backlight_control_method *method;
330 method = &backlight_data->backlight_control[panel_type];
331 dev_priv->vbt.backlight.type = method->type;
332 dev_priv->vbt.backlight.controller = method->controller;
335 dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
336 dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm;
337 dev_priv->vbt.backlight.min_brightness = entry->min_brightness;
338 DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
339 "active %s, min brightness %u, level %u, controller %u\n",
340 dev_priv->vbt.backlight.pwm_freq_hz,
341 dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
342 dev_priv->vbt.backlight.min_brightness,
343 backlight_data->level[panel_type],
344 dev_priv->vbt.backlight.controller);
347 /* Try to find sdvo panel data */
349 parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
350 const struct bdb_header *bdb)
352 const struct lvds_dvo_timing *dvo_timing;
353 struct drm_display_mode *panel_fixed_mode;
356 index = i915_modparams.vbt_sdvo_panel_type;
358 DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
363 const struct bdb_sdvo_lvds_options *sdvo_lvds_options;
365 sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
366 if (!sdvo_lvds_options)
369 index = sdvo_lvds_options->panel_type;
372 dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
376 panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
377 if (!panel_fixed_mode)
380 fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
382 dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
384 DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
385 drm_mode_debug_printmodeline(panel_fixed_mode);
388 static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv,
391 switch (INTEL_GEN(dev_priv)) {
393 return alternate ? 66667 : 48000;
396 return alternate ? 100000 : 96000;
398 return alternate ? 100000 : 120000;
403 parse_general_features(struct drm_i915_private *dev_priv,
404 const struct bdb_header *bdb)
406 const struct bdb_general_features *general;
408 general = find_section(bdb, BDB_GENERAL_FEATURES);
412 dev_priv->vbt.int_tv_support = general->int_tv_support;
413 /* int_crt_support can't be trusted on earlier platforms */
414 if (bdb->version >= 155 &&
415 (HAS_DDI(dev_priv) || IS_VALLEYVIEW(dev_priv)))
416 dev_priv->vbt.int_crt_support = general->int_crt_support;
417 dev_priv->vbt.lvds_use_ssc = general->enable_ssc;
418 dev_priv->vbt.lvds_ssc_freq =
419 intel_bios_ssc_frequency(dev_priv, general->ssc_freq);
420 dev_priv->vbt.display_clock_mode = general->display_clock_mode;
421 dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
422 if (bdb->version >= 181) {
423 dev_priv->vbt.orientation = general->rotate_180 ?
424 DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP :
425 DRM_MODE_PANEL_ORIENTATION_NORMAL;
427 dev_priv->vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
429 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",
430 dev_priv->vbt.int_tv_support,
431 dev_priv->vbt.int_crt_support,
432 dev_priv->vbt.lvds_use_ssc,
433 dev_priv->vbt.lvds_ssc_freq,
434 dev_priv->vbt.display_clock_mode,
435 dev_priv->vbt.fdi_rx_polarity_inverted);
438 static const struct child_device_config *
439 child_device_ptr(const struct bdb_general_definitions *defs, int i)
441 return (const void *) &defs->devices[i * defs->child_dev_size];
445 parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, u8 bdb_version)
447 struct sdvo_device_mapping *mapping;
448 const struct child_device_config *child;
452 * Only parse SDVO mappings on gens that could have SDVO. This isn't
453 * accurate and doesn't have to be, as long as it's not too strict.
455 if (!IS_GEN_RANGE(dev_priv, 3, 7)) {
456 DRM_DEBUG_KMS("Skipping SDVO device mapping\n");
460 for (i = 0, count = 0; i < dev_priv->vbt.child_dev_num; i++) {
461 child = dev_priv->vbt.child_dev + i;
463 if (child->slave_addr != SLAVE_ADDR1 &&
464 child->slave_addr != SLAVE_ADDR2) {
466 * If the slave address is neither 0x70 nor 0x72,
467 * it is not a SDVO device. Skip it.
471 if (child->dvo_port != DEVICE_PORT_DVOB &&
472 child->dvo_port != DEVICE_PORT_DVOC) {
473 /* skip the incorrect SDVO port */
474 DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
477 DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
480 (child->dvo_port == DEVICE_PORT_DVOB) ?
482 mapping = &dev_priv->vbt.sdvo_mappings[child->dvo_port - 1];
483 if (!mapping->initialized) {
484 mapping->dvo_port = child->dvo_port;
485 mapping->slave_addr = child->slave_addr;
486 mapping->dvo_wiring = child->dvo_wiring;
487 mapping->ddc_pin = child->ddc_pin;
488 mapping->i2c_pin = child->i2c_pin;
489 mapping->initialized = 1;
490 DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
497 DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
498 "two SDVO device.\n");
500 if (child->slave2_addr) {
501 /* Maybe this is a SDVO device with multiple inputs */
502 /* And the mapping info is not added */
503 DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
504 " is a SDVO device with multiple inputs.\n");
510 /* No SDVO device info is found */
511 DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
516 parse_driver_features(struct drm_i915_private *dev_priv,
517 const struct bdb_header *bdb)
519 const struct bdb_driver_features *driver;
521 driver = find_section(bdb, BDB_DRIVER_FEATURES);
525 if (INTEL_GEN(dev_priv) >= 5) {
527 * Note that we consider BDB_DRIVER_FEATURE_INT_SDVO_LVDS
528 * to mean "eDP". The VBT spec doesn't agree with that
529 * interpretation, but real world VBTs seem to.
531 if (driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS)
532 dev_priv->vbt.int_lvds_support = 0;
535 * FIXME it's not clear which BDB version has the LVDS config
536 * bits defined. Revision history in the VBT spec says:
537 * "0.92 | Add two definitions for VBT value of LVDS Active
538 * Config (00b and 11b values defined) | 06/13/2005"
539 * but does not the specify the BDB version.
541 * So far version 134 (on i945gm) is the oldest VBT observed
542 * in the wild with the bits correctly populated. Version
543 * 108 (on i85x) does not have the bits correctly populated.
545 if (bdb->version >= 134 &&
546 driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS &&
547 driver->lvds_config != BDB_DRIVER_FEATURE_INT_SDVO_LVDS)
548 dev_priv->vbt.int_lvds_support = 0;
551 DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
553 * If DRRS is not supported, drrs_type has to be set to 0.
554 * This is because, VBT is configured in such a way that
555 * static DRRS is 0 and DRRS not supported is represented by
556 * driver->drrs_enabled=false
558 if (!driver->drrs_enabled)
559 dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
560 dev_priv->vbt.psr.enable = driver->psr_enabled;
564 parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
566 const struct bdb_edp *edp;
567 const struct edp_power_seq *edp_pps;
568 const struct edp_fast_link_params *edp_link_params;
569 int panel_type = dev_priv->vbt.panel_type;
571 edp = find_section(bdb, BDB_EDP);
575 switch ((edp->color_depth >> (panel_type * 2)) & 3) {
577 dev_priv->vbt.edp.bpp = 18;
580 dev_priv->vbt.edp.bpp = 24;
583 dev_priv->vbt.edp.bpp = 30;
587 /* Get the eDP sequencing and link info */
588 edp_pps = &edp->power_seqs[panel_type];
589 edp_link_params = &edp->fast_link_params[panel_type];
591 dev_priv->vbt.edp.pps = *edp_pps;
593 switch (edp_link_params->rate) {
595 dev_priv->vbt.edp.rate = DP_LINK_BW_1_62;
598 dev_priv->vbt.edp.rate = DP_LINK_BW_2_7;
601 DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n",
602 edp_link_params->rate);
606 switch (edp_link_params->lanes) {
608 dev_priv->vbt.edp.lanes = 1;
611 dev_priv->vbt.edp.lanes = 2;
614 dev_priv->vbt.edp.lanes = 4;
617 DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n",
618 edp_link_params->lanes);
622 switch (edp_link_params->preemphasis) {
623 case EDP_PREEMPHASIS_NONE:
624 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
626 case EDP_PREEMPHASIS_3_5dB:
627 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
629 case EDP_PREEMPHASIS_6dB:
630 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
632 case EDP_PREEMPHASIS_9_5dB:
633 dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
636 DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n",
637 edp_link_params->preemphasis);
641 switch (edp_link_params->vswing) {
642 case EDP_VSWING_0_4V:
643 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
645 case EDP_VSWING_0_6V:
646 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
648 case EDP_VSWING_0_8V:
649 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
651 case EDP_VSWING_1_2V:
652 dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
655 DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n",
656 edp_link_params->vswing);
660 if (bdb->version >= 173) {
663 /* Don't read from VBT if module parameter has valid value*/
664 if (i915_modparams.edp_vswing) {
665 dev_priv->vbt.edp.low_vswing =
666 i915_modparams.edp_vswing == 1;
668 vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
669 dev_priv->vbt.edp.low_vswing = vswing == 0;
675 parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
677 const struct bdb_psr *psr;
678 const struct psr_table *psr_table;
679 int panel_type = dev_priv->vbt.panel_type;
681 psr = find_section(bdb, BDB_PSR);
683 DRM_DEBUG_KMS("No PSR BDB found.\n");
687 psr_table = &psr->psr_table[panel_type];
689 dev_priv->vbt.psr.full_link = psr_table->full_link;
690 dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup;
692 /* Allowed VBT values goes from 0 to 15 */
693 dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
694 psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
696 switch (psr_table->lines_to_wait) {
698 dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT;
701 dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT;
704 dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT;
707 dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT;
710 DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n",
711 psr_table->lines_to_wait);
716 * New psr options 0=500us, 1=100us, 2=2500us, 3=0us
717 * Old decimal value is wake up time in multiples of 100 us.
719 if (bdb->version >= 205 &&
720 (IS_GEN9_BC(dev_priv) || IS_GEMINILAKE(dev_priv) ||
721 INTEL_GEN(dev_priv) >= 10)) {
722 switch (psr_table->tp1_wakeup_time) {
724 dev_priv->vbt.psr.tp1_wakeup_time_us = 500;
727 dev_priv->vbt.psr.tp1_wakeup_time_us = 100;
730 dev_priv->vbt.psr.tp1_wakeup_time_us = 0;
733 DRM_DEBUG_KMS("VBT tp1 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
734 psr_table->tp1_wakeup_time);
737 dev_priv->vbt.psr.tp1_wakeup_time_us = 2500;
741 switch (psr_table->tp2_tp3_wakeup_time) {
743 dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 500;
746 dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 100;
749 dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 0;
752 DRM_DEBUG_KMS("VBT tp2_tp3 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
753 psr_table->tp2_tp3_wakeup_time);
756 dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 2500;
760 dev_priv->vbt.psr.tp1_wakeup_time_us = psr_table->tp1_wakeup_time * 100;
761 dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = psr_table->tp2_tp3_wakeup_time * 100;
764 if (bdb->version >= 226) {
765 u32 wakeup_time = psr_table->psr2_tp2_tp3_wakeup_time;
767 wakeup_time = (wakeup_time >> (2 * panel_type)) & 0x3;
768 switch (wakeup_time) {
783 dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = wakeup_time;
785 /* Reusing PSR1 wakeup time for PSR2 in older VBTs */
786 dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = dev_priv->vbt.psr.tp2_tp3_wakeup_time_us;
790 static void parse_dsi_backlight_ports(struct drm_i915_private *dev_priv,
791 u16 version, enum port port)
793 if (!dev_priv->vbt.dsi.config->dual_link || version < 197) {
794 dev_priv->vbt.dsi.bl_ports = BIT(port);
795 if (dev_priv->vbt.dsi.config->cabc_supported)
796 dev_priv->vbt.dsi.cabc_ports = BIT(port);
801 switch (dev_priv->vbt.dsi.config->dl_dcs_backlight_ports) {
803 dev_priv->vbt.dsi.bl_ports = BIT(PORT_A);
806 dev_priv->vbt.dsi.bl_ports = BIT(PORT_C);
809 case DL_DCS_PORT_A_AND_C:
810 dev_priv->vbt.dsi.bl_ports = BIT(PORT_A) | BIT(PORT_C);
814 if (!dev_priv->vbt.dsi.config->cabc_supported)
817 switch (dev_priv->vbt.dsi.config->dl_dcs_cabc_ports) {
819 dev_priv->vbt.dsi.cabc_ports = BIT(PORT_A);
822 dev_priv->vbt.dsi.cabc_ports = BIT(PORT_C);
825 case DL_DCS_PORT_A_AND_C:
826 dev_priv->vbt.dsi.cabc_ports =
827 BIT(PORT_A) | BIT(PORT_C);
833 parse_mipi_config(struct drm_i915_private *dev_priv,
834 const struct bdb_header *bdb)
836 const struct bdb_mipi_config *start;
837 const struct mipi_config *config;
838 const struct mipi_pps_data *pps;
839 int panel_type = dev_priv->vbt.panel_type;
842 /* parse MIPI blocks only if LFP type is MIPI */
843 if (!intel_bios_is_dsi_present(dev_priv, &port))
846 /* Initialize this to undefined indicating no generic MIPI support */
847 dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
849 /* Block #40 is already parsed and panel_fixed_mode is
850 * stored in dev_priv->lfp_lvds_vbt_mode
851 * resuse this when needed
854 /* Parse #52 for panel index used from panel_type already
857 start = find_section(bdb, BDB_MIPI_CONFIG);
859 DRM_DEBUG_KMS("No MIPI config BDB found");
863 DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n",
867 * get hold of the correct configuration block and pps data as per
868 * the panel_type as index
870 config = &start->config[panel_type];
871 pps = &start->pps[panel_type];
873 /* store as of now full data. Trim when we realise all is not needed */
874 dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
875 if (!dev_priv->vbt.dsi.config)
878 dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
879 if (!dev_priv->vbt.dsi.pps) {
880 kfree(dev_priv->vbt.dsi.config);
884 parse_dsi_backlight_ports(dev_priv, bdb->version, port);
886 /* FIXME is the 90 vs. 270 correct? */
887 switch (config->rotation) {
888 case ENABLE_ROTATION_0:
890 * Most (all?) VBTs claim 0 degrees despite having
891 * an upside down panel, thus we do not trust this.
893 dev_priv->vbt.dsi.orientation =
894 DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
896 case ENABLE_ROTATION_90:
897 dev_priv->vbt.dsi.orientation =
898 DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
900 case ENABLE_ROTATION_180:
901 dev_priv->vbt.dsi.orientation =
902 DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
904 case ENABLE_ROTATION_270:
905 dev_priv->vbt.dsi.orientation =
906 DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
910 /* We have mandatory mipi config blocks. Initialize as generic panel */
911 dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
914 /* Find the sequence block and size for the given panel. */
916 find_panel_sequence_block(const struct bdb_mipi_sequence *sequence,
917 u16 panel_id, u32 *seq_size)
919 u32 total = get_blocksize(sequence);
920 const u8 *data = &sequence->data[0];
923 int header_size = sequence->version >= 3 ? 5 : 3;
927 /* skip new block size */
928 if (sequence->version >= 3)
931 for (i = 0; i < MAX_MIPI_CONFIGURATIONS && index < total; i++) {
932 if (index + header_size > total) {
933 DRM_ERROR("Invalid sequence block (header)\n");
937 current_id = *(data + index);
938 if (sequence->version >= 3)
939 current_size = *((const u32 *)(data + index + 1));
941 current_size = *((const u16 *)(data + index + 1));
943 index += header_size;
945 if (index + current_size > total) {
946 DRM_ERROR("Invalid sequence block\n");
950 if (current_id == panel_id) {
951 *seq_size = current_size;
955 index += current_size;
958 DRM_ERROR("Sequence block detected but no valid configuration\n");
963 static int goto_next_sequence(const u8 *data, int index, int total)
967 /* Skip Sequence Byte. */
968 for (index = index + 1; index < total; index += len) {
969 u8 operation_byte = *(data + index);
972 switch (operation_byte) {
973 case MIPI_SEQ_ELEM_END:
975 case MIPI_SEQ_ELEM_SEND_PKT:
976 if (index + 4 > total)
979 len = *((const u16 *)(data + index + 2)) + 4;
981 case MIPI_SEQ_ELEM_DELAY:
984 case MIPI_SEQ_ELEM_GPIO:
987 case MIPI_SEQ_ELEM_I2C:
988 if (index + 7 > total)
990 len = *(data + index + 6) + 7;
993 DRM_ERROR("Unknown operation byte\n");
1001 static int goto_next_sequence_v3(const u8 *data, int index, int total)
1005 u32 size_of_sequence;
1008 * Could skip sequence based on Size of Sequence alone, but also do some
1009 * checking on the structure.
1012 DRM_ERROR("Too small sequence size\n");
1016 /* Skip Sequence Byte. */
1020 * Size of Sequence. Excludes the Sequence Byte and the size itself,
1021 * includes MIPI_SEQ_ELEM_END byte, excludes the final MIPI_SEQ_END
1024 size_of_sequence = *((const u32 *)(data + index));
1027 seq_end = index + size_of_sequence;
1028 if (seq_end > total) {
1029 DRM_ERROR("Invalid sequence size\n");
1033 for (; index < total; index += len) {
1034 u8 operation_byte = *(data + index);
1037 if (operation_byte == MIPI_SEQ_ELEM_END) {
1038 if (index != seq_end) {
1039 DRM_ERROR("Invalid element structure\n");
1045 len = *(data + index);
1049 * FIXME: Would be nice to check elements like for v1/v2 in
1050 * goto_next_sequence() above.
1052 switch (operation_byte) {
1053 case MIPI_SEQ_ELEM_SEND_PKT:
1054 case MIPI_SEQ_ELEM_DELAY:
1055 case MIPI_SEQ_ELEM_GPIO:
1056 case MIPI_SEQ_ELEM_I2C:
1057 case MIPI_SEQ_ELEM_SPI:
1058 case MIPI_SEQ_ELEM_PMIC:
1061 DRM_ERROR("Unknown operation byte %u\n",
1071 * Get len of pre-fixed deassert fragment from a v1 init OTP sequence,
1072 * skip all delay + gpio operands and stop at the first DSI packet op.
1074 static int get_init_otp_deassert_fragment_len(struct drm_i915_private *dev_priv)
1076 const u8 *data = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
1079 if (WARN_ON(!data || dev_priv->vbt.dsi.seq_version != 1))
1082 /* index = 1 to skip sequence byte */
1083 for (index = 1; data[index] != MIPI_SEQ_ELEM_END; index += len) {
1084 switch (data[index]) {
1085 case MIPI_SEQ_ELEM_SEND_PKT:
1086 return index == 1 ? 0 : index;
1087 case MIPI_SEQ_ELEM_DELAY:
1088 len = 5; /* 1 byte for operand + uint32 */
1090 case MIPI_SEQ_ELEM_GPIO:
1091 len = 3; /* 1 byte for op, 1 for gpio_nr, 1 for value */
1102 * Some v1 VBT MIPI sequences do the deassert in the init OTP sequence.
1103 * The deassert must be done before calling intel_dsi_device_ready, so for
1104 * these devices we split the init OTP sequence into a deassert sequence and
1105 * the actual init OTP part.
1107 static void fixup_mipi_sequences(struct drm_i915_private *dev_priv)
1112 /* Limit this to VLV for now. */
1113 if (!IS_VALLEYVIEW(dev_priv))
1116 /* Limit this to v1 vid-mode sequences */
1117 if (dev_priv->vbt.dsi.config->is_cmd_mode ||
1118 dev_priv->vbt.dsi.seq_version != 1)
1121 /* Only do this if there are otp and assert seqs and no deassert seq */
1122 if (!dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] ||
1123 !dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET] ||
1124 dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET])
1127 /* The deassert-sequence ends at the first DSI packet */
1128 len = get_init_otp_deassert_fragment_len(dev_priv);
1132 DRM_DEBUG_KMS("Using init OTP fragment to deassert reset\n");
1134 /* Copy the fragment, update seq byte and terminate it */
1135 init_otp = (u8 *)dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
1136 dev_priv->vbt.dsi.deassert_seq = kmemdup(init_otp, len + 1, GFP_KERNEL);
1137 if (!dev_priv->vbt.dsi.deassert_seq)
1139 dev_priv->vbt.dsi.deassert_seq[0] = MIPI_SEQ_DEASSERT_RESET;
1140 dev_priv->vbt.dsi.deassert_seq[len] = MIPI_SEQ_ELEM_END;
1141 /* Use the copy for deassert */
1142 dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET] =
1143 dev_priv->vbt.dsi.deassert_seq;
1144 /* Replace the last byte of the fragment with init OTP seq byte */
1145 init_otp[len - 1] = MIPI_SEQ_INIT_OTP;
1146 /* And make MIPI_MIPI_SEQ_INIT_OTP point to it */
1147 dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] = init_otp + len - 1;
1151 parse_mipi_sequence(struct drm_i915_private *dev_priv,
1152 const struct bdb_header *bdb)
1154 int panel_type = dev_priv->vbt.panel_type;
1155 const struct bdb_mipi_sequence *sequence;
1161 /* Only our generic panel driver uses the sequence block. */
1162 if (dev_priv->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
1165 sequence = find_section(bdb, BDB_MIPI_SEQUENCE);
1167 DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n");
1171 /* Fail gracefully for forward incompatible sequence block. */
1172 if (sequence->version >= 4) {
1173 DRM_ERROR("Unable to parse MIPI Sequence Block v%u\n",
1178 DRM_DEBUG_DRIVER("Found MIPI sequence block v%u\n", sequence->version);
1180 seq_data = find_panel_sequence_block(sequence, panel_type, &seq_size);
1184 data = kmemdup(seq_data, seq_size, GFP_KERNEL);
1188 /* Parse the sequences, store pointers to each sequence. */
1190 u8 seq_id = *(data + index);
1191 if (seq_id == MIPI_SEQ_END)
1194 if (seq_id >= MIPI_SEQ_MAX) {
1195 DRM_ERROR("Unknown sequence %u\n", seq_id);
1199 /* Log about presence of sequences we won't run. */
1200 if (seq_id == MIPI_SEQ_TEAR_ON || seq_id == MIPI_SEQ_TEAR_OFF)
1201 DRM_DEBUG_KMS("Unsupported sequence %u\n", seq_id);
1203 dev_priv->vbt.dsi.sequence[seq_id] = data + index;
1205 if (sequence->version >= 3)
1206 index = goto_next_sequence_v3(data, index, seq_size);
1208 index = goto_next_sequence(data, index, seq_size);
1210 DRM_ERROR("Invalid sequence %u\n", seq_id);
1215 dev_priv->vbt.dsi.data = data;
1216 dev_priv->vbt.dsi.size = seq_size;
1217 dev_priv->vbt.dsi.seq_version = sequence->version;
1219 fixup_mipi_sequences(dev_priv);
1221 DRM_DEBUG_DRIVER("MIPI related VBT parsing complete\n");
1226 memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence));
1229 static u8 translate_iboost(u8 val)
1231 static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */
1233 if (val >= ARRAY_SIZE(mapping)) {
1234 DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val);
1237 return mapping[val];
1240 static void sanitize_ddc_pin(struct drm_i915_private *dev_priv,
1243 const struct ddi_vbt_port_info *info =
1244 &dev_priv->vbt.ddi_port_info[port];
1247 if (!info->alternate_ddc_pin)
1250 for (p = PORT_A; p < I915_MAX_PORTS; p++) {
1251 struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p];
1253 if (p == port || !i->present ||
1254 info->alternate_ddc_pin != i->alternate_ddc_pin)
1257 DRM_DEBUG_KMS("port %c trying to use the same DDC pin (0x%x) as port %c, "
1258 "disabling port %c DVI/HDMI support\n",
1259 port_name(p), i->alternate_ddc_pin,
1260 port_name(port), port_name(p));
1263 * If we have multiple ports supposedly sharing the
1264 * pin, then dvi/hdmi couldn't exist on the shared
1265 * port. Otherwise they share the same ddc bin and
1266 * system couldn't communicate with them separately.
1268 * Due to parsing the ports in child device order,
1269 * a later device will always clobber an earlier one.
1271 i->supports_dvi = false;
1272 i->supports_hdmi = false;
1273 i->alternate_ddc_pin = 0;
1277 static void sanitize_aux_ch(struct drm_i915_private *dev_priv,
1280 const struct ddi_vbt_port_info *info =
1281 &dev_priv->vbt.ddi_port_info[port];
1284 if (!info->alternate_aux_channel)
1287 for (p = PORT_A; p < I915_MAX_PORTS; p++) {
1288 struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p];
1290 if (p == port || !i->present ||
1291 info->alternate_aux_channel != i->alternate_aux_channel)
1294 DRM_DEBUG_KMS("port %c trying to use the same AUX CH (0x%x) as port %c, "
1295 "disabling port %c DP support\n",
1296 port_name(p), i->alternate_aux_channel,
1297 port_name(port), port_name(p));
1300 * If we have multiple ports supposedlt sharing the
1301 * aux channel, then DP couldn't exist on the shared
1302 * port. Otherwise they share the same aux channel
1303 * and system couldn't communicate with them separately.
1305 * Due to parsing the ports in child device order,
1306 * a later device will always clobber an earlier one.
1308 i->supports_dp = false;
1309 i->alternate_aux_channel = 0;
1313 static const u8 cnp_ddc_pin_map[] = {
1315 [DDC_BUS_DDI_B] = GMBUS_PIN_1_BXT,
1316 [DDC_BUS_DDI_C] = GMBUS_PIN_2_BXT,
1317 [DDC_BUS_DDI_D] = GMBUS_PIN_4_CNP, /* sic */
1318 [DDC_BUS_DDI_F] = GMBUS_PIN_3_BXT, /* sic */
1321 static const u8 icp_ddc_pin_map[] = {
1322 [ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
1323 [ICL_DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
1324 [ICL_DDC_BUS_PORT_1] = GMBUS_PIN_9_TC1_ICP,
1325 [ICL_DDC_BUS_PORT_2] = GMBUS_PIN_10_TC2_ICP,
1326 [ICL_DDC_BUS_PORT_3] = GMBUS_PIN_11_TC3_ICP,
1327 [ICL_DDC_BUS_PORT_4] = GMBUS_PIN_12_TC4_ICP,
1330 static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
1332 const u8 *ddc_pin_map;
1335 if (HAS_PCH_ICP(dev_priv)) {
1336 ddc_pin_map = icp_ddc_pin_map;
1337 n_entries = ARRAY_SIZE(icp_ddc_pin_map);
1338 } else if (HAS_PCH_CNP(dev_priv)) {
1339 ddc_pin_map = cnp_ddc_pin_map;
1340 n_entries = ARRAY_SIZE(cnp_ddc_pin_map);
1342 /* Assuming direct map */
1346 if (vbt_pin < n_entries && ddc_pin_map[vbt_pin] != 0)
1347 return ddc_pin_map[vbt_pin];
1349 DRM_DEBUG_KMS("Ignoring alternate pin: VBT claims DDC pin %d, which is not valid for this platform\n",
1354 static enum port dvo_port_to_port(u8 dvo_port)
1357 * Each DDI port can have more than one value on the "DVO Port" field,
1358 * so look for all the possible values for each port.
1360 static const int dvo_ports[][3] = {
1361 [PORT_A] = { DVO_PORT_HDMIA, DVO_PORT_DPA, -1},
1362 [PORT_B] = { DVO_PORT_HDMIB, DVO_PORT_DPB, -1},
1363 [PORT_C] = { DVO_PORT_HDMIC, DVO_PORT_DPC, -1},
1364 [PORT_D] = { DVO_PORT_HDMID, DVO_PORT_DPD, -1},
1365 [PORT_E] = { DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE},
1366 [PORT_F] = { DVO_PORT_HDMIF, DVO_PORT_DPF, -1},
1371 for (port = PORT_A; port < ARRAY_SIZE(dvo_ports); port++) {
1372 for (i = 0; i < ARRAY_SIZE(dvo_ports[port]); i++) {
1373 if (dvo_ports[port][i] == -1)
1376 if (dvo_port == dvo_ports[port][i])
1384 static void parse_ddi_port(struct drm_i915_private *dev_priv,
1385 const struct child_device_config *child,
1388 struct ddi_vbt_port_info *info;
1389 bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
1392 port = dvo_port_to_port(child->dvo_port);
1393 if (port == PORT_NONE)
1396 info = &dev_priv->vbt.ddi_port_info[port];
1398 if (info->present) {
1399 DRM_DEBUG_KMS("More than one child device for port %c in VBT, using the first.\n",
1404 info->present = true;
1406 is_dvi = child->device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
1407 is_dp = child->device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
1408 is_crt = child->device_type & DEVICE_TYPE_ANALOG_OUTPUT;
1409 is_hdmi = is_dvi && (child->device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
1410 is_edp = is_dp && (child->device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
1412 if (port == PORT_A && is_dvi) {
1413 DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n",
1414 is_hdmi ? "/HDMI" : "");
1419 info->supports_dvi = is_dvi;
1420 info->supports_hdmi = is_hdmi;
1421 info->supports_dp = is_dp;
1422 info->supports_edp = is_edp;
1424 if (bdb_version >= 195)
1425 info->supports_typec_usb = child->dp_usb_type_c;
1427 if (bdb_version >= 209)
1428 info->supports_tbt = child->tbt;
1430 DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d TCUSB:%d TBT:%d\n",
1431 port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt,
1432 info->supports_typec_usb, info->supports_tbt);
1434 if (is_edp && is_dvi)
1435 DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n",
1437 if (is_crt && port != PORT_E)
1438 DRM_DEBUG_KMS("Port %c is analog\n", port_name(port));
1439 if (is_crt && (is_dvi || is_dp))
1440 DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n",
1442 if (is_dvi && (port == PORT_A || port == PORT_E))
1443 DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port));
1444 if (!is_dvi && !is_dp && !is_crt)
1445 DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n",
1447 if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E))
1448 DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
1453 ddc_pin = map_ddc_pin(dev_priv, child->ddc_pin);
1454 if (intel_gmbus_is_valid_pin(dev_priv, ddc_pin)) {
1455 info->alternate_ddc_pin = ddc_pin;
1456 sanitize_ddc_pin(dev_priv, port);
1458 DRM_DEBUG_KMS("Port %c has invalid DDC pin %d, "
1459 "sticking to defaults\n",
1460 port_name(port), ddc_pin);
1465 info->alternate_aux_channel = child->aux_channel;
1467 sanitize_aux_ch(dev_priv, port);
1470 if (bdb_version >= 158) {
1471 /* The VBT HDMI level shift values match the table we have. */
1472 u8 hdmi_level_shift = child->hdmi_level_shifter_value;
1473 DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
1476 info->hdmi_level_shift = hdmi_level_shift;
1479 if (bdb_version >= 204) {
1482 switch (child->hdmi_max_data_rate) {
1484 MISSING_CASE(child->hdmi_max_data_rate);
1486 case HDMI_MAX_DATA_RATE_PLATFORM:
1489 case HDMI_MAX_DATA_RATE_297:
1490 max_tmds_clock = 297000;
1492 case HDMI_MAX_DATA_RATE_165:
1493 max_tmds_clock = 165000;
1498 DRM_DEBUG_KMS("VBT HDMI max TMDS clock for port %c: %d kHz\n",
1499 port_name(port), max_tmds_clock);
1500 info->max_tmds_clock = max_tmds_clock;
1503 /* Parse the I_boost config for SKL and above */
1504 if (bdb_version >= 196 && child->iboost) {
1505 info->dp_boost_level = translate_iboost(child->dp_iboost_level);
1506 DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n",
1507 port_name(port), info->dp_boost_level);
1508 info->hdmi_boost_level = translate_iboost(child->hdmi_iboost_level);
1509 DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n",
1510 port_name(port), info->hdmi_boost_level);
1513 /* DP max link rate for CNL+ */
1514 if (bdb_version >= 216) {
1515 switch (child->dp_max_link_rate) {
1517 case VBT_DP_MAX_LINK_RATE_HBR3:
1518 info->dp_max_link_rate = 810000;
1520 case VBT_DP_MAX_LINK_RATE_HBR2:
1521 info->dp_max_link_rate = 540000;
1523 case VBT_DP_MAX_LINK_RATE_HBR:
1524 info->dp_max_link_rate = 270000;
1526 case VBT_DP_MAX_LINK_RATE_LBR:
1527 info->dp_max_link_rate = 162000;
1530 DRM_DEBUG_KMS("VBT DP max link rate for port %c: %d\n",
1531 port_name(port), info->dp_max_link_rate);
1535 static void parse_ddi_ports(struct drm_i915_private *dev_priv, u8 bdb_version)
1537 const struct child_device_config *child;
1540 if (!HAS_DDI(dev_priv) && !IS_CHERRYVIEW(dev_priv))
1543 if (bdb_version < 155)
1546 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1547 child = dev_priv->vbt.child_dev + i;
1549 parse_ddi_port(dev_priv, child, bdb_version);
1554 parse_general_definitions(struct drm_i915_private *dev_priv,
1555 const struct bdb_header *bdb)
1557 const struct bdb_general_definitions *defs;
1558 const struct child_device_config *child;
1559 int i, child_device_num, count;
1564 defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
1566 DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
1570 block_size = get_blocksize(defs);
1571 if (block_size < sizeof(*defs)) {
1572 DRM_DEBUG_KMS("General definitions block too small (%u)\n",
1577 bus_pin = defs->crt_ddc_gmbus_pin;
1578 DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
1579 if (intel_gmbus_is_valid_pin(dev_priv, bus_pin))
1580 dev_priv->vbt.crt_ddc_pin = bus_pin;
1582 if (bdb->version < 106) {
1584 } else if (bdb->version < 111) {
1586 } else if (bdb->version < 195) {
1587 expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
1588 } else if (bdb->version == 195) {
1590 } else if (bdb->version <= 215) {
1592 } else if (bdb->version <= 216) {
1595 expected_size = sizeof(*child);
1596 BUILD_BUG_ON(sizeof(*child) < 39);
1597 DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n",
1598 bdb->version, expected_size);
1601 /* Flag an error for unexpected size, but continue anyway. */
1602 if (defs->child_dev_size != expected_size)
1603 DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n",
1604 defs->child_dev_size, expected_size, bdb->version);
1606 /* The legacy sized child device config is the minimum we need. */
1607 if (defs->child_dev_size < LEGACY_CHILD_DEVICE_CONFIG_SIZE) {
1608 DRM_DEBUG_KMS("Child device config size %u is too small.\n",
1609 defs->child_dev_size);
1613 /* get the number of child device */
1614 child_device_num = (block_size - sizeof(*defs)) / defs->child_dev_size;
1616 /* get the number of child device that is present */
1617 for (i = 0; i < child_device_num; i++) {
1618 child = child_device_ptr(defs, i);
1619 if (!child->device_type)
1624 DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
1627 dev_priv->vbt.child_dev = kcalloc(count, sizeof(*child), GFP_KERNEL);
1628 if (!dev_priv->vbt.child_dev) {
1629 DRM_DEBUG_KMS("No memory space for child device\n");
1633 dev_priv->vbt.child_dev_num = count;
1635 for (i = 0; i < child_device_num; i++) {
1636 child = child_device_ptr(defs, i);
1637 if (!child->device_type)
1641 * Copy as much as we know (sizeof) and is available
1642 * (child_dev_size) of the child device. Accessing the data must
1643 * depend on VBT version.
1645 memcpy(dev_priv->vbt.child_dev + count, child,
1646 min_t(size_t, defs->child_dev_size, sizeof(*child)));
1651 /* Common defaults which may be overridden by VBT. */
1653 init_vbt_defaults(struct drm_i915_private *dev_priv)
1657 dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
1659 /* Default to having backlight */
1660 dev_priv->vbt.backlight.present = true;
1662 /* LFP panel data */
1663 dev_priv->vbt.lvds_dither = 1;
1665 /* SDVO panel data */
1666 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
1668 /* general features */
1669 dev_priv->vbt.int_tv_support = 1;
1670 dev_priv->vbt.int_crt_support = 1;
1672 /* driver features */
1673 dev_priv->vbt.int_lvds_support = 1;
1675 /* Default to using SSC */
1676 dev_priv->vbt.lvds_use_ssc = 1;
1678 * Core/SandyBridge/IvyBridge use alternative (120MHz) reference
1681 dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev_priv,
1682 !HAS_PCH_SPLIT(dev_priv));
1683 DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq);
1685 for (port = PORT_A; port < I915_MAX_PORTS; port++) {
1686 struct ddi_vbt_port_info *info =
1687 &dev_priv->vbt.ddi_port_info[port];
1689 info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN;
1693 /* Defaults to initialize only if there is no VBT. */
1695 init_vbt_missing_defaults(struct drm_i915_private *dev_priv)
1699 for (port = PORT_A; port < I915_MAX_PORTS; port++) {
1700 struct ddi_vbt_port_info *info =
1701 &dev_priv->vbt.ddi_port_info[port];
1704 * VBT has the TypeC mode (native,TBT/USB) and we don't want
1707 if (intel_port_is_tc(dev_priv, port))
1710 info->supports_dvi = (port != PORT_A && port != PORT_E);
1711 info->supports_hdmi = info->supports_dvi;
1712 info->supports_dp = (port != PORT_E);
1713 info->supports_edp = (port == PORT_A);
1717 static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt)
1719 const void *_vbt = vbt;
1721 return _vbt + vbt->bdb_offset;
1725 * intel_bios_is_valid_vbt - does the given buffer contain a valid VBT
1726 * @buf: pointer to a buffer to validate
1727 * @size: size of the buffer
1729 * Returns true on valid VBT.
1731 bool intel_bios_is_valid_vbt(const void *buf, size_t size)
1733 const struct vbt_header *vbt = buf;
1734 const struct bdb_header *bdb;
1739 if (sizeof(struct vbt_header) > size) {
1740 DRM_DEBUG_DRIVER("VBT header incomplete\n");
1744 if (memcmp(vbt->signature, "$VBT", 4)) {
1745 DRM_DEBUG_DRIVER("VBT invalid signature\n");
1749 if (range_overflows_t(size_t,
1751 sizeof(struct bdb_header),
1753 DRM_DEBUG_DRIVER("BDB header incomplete\n");
1757 bdb = get_bdb_header(vbt);
1758 if (range_overflows_t(size_t, vbt->bdb_offset, bdb->bdb_size, size)) {
1759 DRM_DEBUG_DRIVER("BDB incomplete\n");
1766 static const struct vbt_header *find_vbt(void __iomem *bios, size_t size)
1770 /* Scour memory looking for the VBT signature. */
1771 for (i = 0; i + 4 < size; i++) {
1774 if (ioread32(bios + i) != *((const u32 *) "$VBT"))
1778 * This is the one place where we explicitly discard the address
1779 * space (__iomem) of the BIOS/VBT.
1781 vbt = (void __force *) bios + i;
1782 if (intel_bios_is_valid_vbt(vbt, size - i))
1792 * intel_bios_init - find VBT and initialize settings from the BIOS
1793 * @dev_priv: i915 device instance
1795 * Parse and initialize settings from the Video BIOS Tables (VBT). If the VBT
1796 * was not found in ACPI OpRegion, try to find it in PCI ROM first. Also
1797 * initialize some defaults if the VBT is not present at all.
1799 void intel_bios_init(struct drm_i915_private *dev_priv)
1801 struct pci_dev *pdev = dev_priv->drm.pdev;
1802 const struct vbt_header *vbt = dev_priv->opregion.vbt;
1803 const struct bdb_header *bdb;
1804 u8 __iomem *bios = NULL;
1806 if (!HAS_DISPLAY(dev_priv)) {
1807 DRM_DEBUG_KMS("Skipping VBT init due to disabled display.\n");
1811 init_vbt_defaults(dev_priv);
1813 /* If the OpRegion does not have VBT, look in PCI ROM. */
1817 bios = pci_map_rom(pdev, &size);
1821 vbt = find_vbt(bios, size);
1825 DRM_DEBUG_KMS("Found valid VBT in PCI ROM\n");
1828 bdb = get_bdb_header(vbt);
1830 DRM_DEBUG_KMS("VBT signature \"%.*s\", BDB version %d\n",
1831 (int)sizeof(vbt->signature), vbt->signature, bdb->version);
1833 /* Grab useful general definitions */
1834 parse_general_features(dev_priv, bdb);
1835 parse_general_definitions(dev_priv, bdb);
1836 parse_lfp_panel_data(dev_priv, bdb);
1837 parse_lfp_backlight(dev_priv, bdb);
1838 parse_sdvo_panel_data(dev_priv, bdb);
1839 parse_driver_features(dev_priv, bdb);
1840 parse_edp(dev_priv, bdb);
1841 parse_psr(dev_priv, bdb);
1842 parse_mipi_config(dev_priv, bdb);
1843 parse_mipi_sequence(dev_priv, bdb);
1845 /* Further processing on pre-parsed data */
1846 parse_sdvo_device_mapping(dev_priv, bdb->version);
1847 parse_ddi_ports(dev_priv, bdb->version);
1851 DRM_INFO("Failed to find VBIOS tables (VBT)\n");
1852 init_vbt_missing_defaults(dev_priv);
1856 pci_unmap_rom(pdev, bios);
1860 * intel_bios_cleanup - Free any resources allocated by intel_bios_init()
1861 * @dev_priv: i915 device instance
1863 void intel_bios_cleanup(struct drm_i915_private *dev_priv)
1865 kfree(dev_priv->vbt.child_dev);
1866 dev_priv->vbt.child_dev = NULL;
1867 dev_priv->vbt.child_dev_num = 0;
1868 kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
1869 dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
1870 kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
1871 dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
1872 kfree(dev_priv->vbt.dsi.data);
1873 dev_priv->vbt.dsi.data = NULL;
1874 kfree(dev_priv->vbt.dsi.pps);
1875 dev_priv->vbt.dsi.pps = NULL;
1876 kfree(dev_priv->vbt.dsi.config);
1877 dev_priv->vbt.dsi.config = NULL;
1878 kfree(dev_priv->vbt.dsi.deassert_seq);
1879 dev_priv->vbt.dsi.deassert_seq = NULL;
1883 * intel_bios_is_tv_present - is integrated TV present in VBT
1884 * @dev_priv: i915 device instance
1886 * Return true if TV is present. If no child devices were parsed from VBT,
1887 * assume TV is present.
1889 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv)
1891 const struct child_device_config *child;
1894 if (!dev_priv->vbt.int_tv_support)
1897 if (!dev_priv->vbt.child_dev_num)
1900 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1901 child = dev_priv->vbt.child_dev + i;
1903 * If the device type is not TV, continue.
1905 switch (child->device_type) {
1906 case DEVICE_TYPE_INT_TV:
1907 case DEVICE_TYPE_TV:
1908 case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
1913 /* Only when the addin_offset is non-zero, it is regarded
1916 if (child->addin_offset)
1924 * intel_bios_is_lvds_present - is LVDS present in VBT
1925 * @dev_priv: i915 device instance
1926 * @i2c_pin: i2c pin for LVDS if present
1928 * Return true if LVDS is present. If no child devices were parsed from VBT,
1929 * assume LVDS is present.
1931 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin)
1933 const struct child_device_config *child;
1936 if (!dev_priv->vbt.child_dev_num)
1939 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
1940 child = dev_priv->vbt.child_dev + i;
1942 /* If the device type is not LFP, continue.
1943 * We have to check both the new identifiers as well as the
1944 * old for compatibility with some BIOSes.
1946 if (child->device_type != DEVICE_TYPE_INT_LFP &&
1947 child->device_type != DEVICE_TYPE_LFP)
1950 if (intel_gmbus_is_valid_pin(dev_priv, child->i2c_pin))
1951 *i2c_pin = child->i2c_pin;
1953 /* However, we cannot trust the BIOS writers to populate
1954 * the VBT correctly. Since LVDS requires additional
1955 * information from AIM blocks, a non-zero addin offset is
1956 * a good indicator that the LVDS is actually present.
1958 if (child->addin_offset)
1961 /* But even then some BIOS writers perform some black magic
1962 * and instantiate the device without reference to any
1963 * additional data. Trust that if the VBT was written into
1964 * the OpRegion then they have validated the LVDS's existence.
1966 if (dev_priv->opregion.vbt)
1974 * intel_bios_is_port_present - is the specified digital port present
1975 * @dev_priv: i915 device instance
1976 * @port: port to check
1978 * Return true if the device in %port is present.
1980 bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port)
1982 const struct child_device_config *child;
1983 static const struct {
1985 } port_mapping[] = {
1986 [PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
1987 [PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
1988 [PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
1989 [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
1990 [PORT_F] = { DVO_PORT_DPF, DVO_PORT_HDMIF, },
1994 if (HAS_DDI(dev_priv)) {
1995 const struct ddi_vbt_port_info *port_info =
1996 &dev_priv->vbt.ddi_port_info[port];
1998 return port_info->supports_dp ||
1999 port_info->supports_dvi ||
2000 port_info->supports_hdmi;
2003 /* FIXME maybe deal with port A as well? */
2004 if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping))
2007 if (!dev_priv->vbt.child_dev_num)
2010 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2011 child = dev_priv->vbt.child_dev + i;
2013 if ((child->dvo_port == port_mapping[port].dp ||
2014 child->dvo_port == port_mapping[port].hdmi) &&
2015 (child->device_type & (DEVICE_TYPE_TMDS_DVI_SIGNALING |
2016 DEVICE_TYPE_DISPLAYPORT_OUTPUT)))
2024 * intel_bios_is_port_edp - is the device in given port eDP
2025 * @dev_priv: i915 device instance
2026 * @port: port to check
2028 * Return true if the device in %port is eDP.
2030 bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
2032 const struct child_device_config *child;
2033 static const short port_mapping[] = {
2034 [PORT_B] = DVO_PORT_DPB,
2035 [PORT_C] = DVO_PORT_DPC,
2036 [PORT_D] = DVO_PORT_DPD,
2037 [PORT_E] = DVO_PORT_DPE,
2038 [PORT_F] = DVO_PORT_DPF,
2042 if (HAS_DDI(dev_priv))
2043 return dev_priv->vbt.ddi_port_info[port].supports_edp;
2045 if (!dev_priv->vbt.child_dev_num)
2048 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2049 child = dev_priv->vbt.child_dev + i;
2051 if (child->dvo_port == port_mapping[port] &&
2052 (child->device_type & DEVICE_TYPE_eDP_BITS) ==
2053 (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
2060 static bool child_dev_is_dp_dual_mode(const struct child_device_config *child,
2063 static const struct {
2065 } port_mapping[] = {
2067 * Buggy VBTs may declare DP ports as having
2068 * HDMI type dvo_port :( So let's check both.
2070 [PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
2071 [PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
2072 [PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
2073 [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
2074 [PORT_F] = { DVO_PORT_DPF, DVO_PORT_HDMIF, },
2077 if (port == PORT_A || port >= ARRAY_SIZE(port_mapping))
2080 if ((child->device_type & DEVICE_TYPE_DP_DUAL_MODE_BITS) !=
2081 (DEVICE_TYPE_DP_DUAL_MODE & DEVICE_TYPE_DP_DUAL_MODE_BITS))
2084 if (child->dvo_port == port_mapping[port].dp)
2087 /* Only accept a HDMI dvo_port as DP++ if it has an AUX channel */
2088 if (child->dvo_port == port_mapping[port].hdmi &&
2089 child->aux_channel != 0)
2095 bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv,
2098 const struct child_device_config *child;
2101 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2102 child = dev_priv->vbt.child_dev + i;
2104 if (child_dev_is_dp_dual_mode(child, port))
2112 * intel_bios_is_dsi_present - is DSI present in VBT
2113 * @dev_priv: i915 device instance
2114 * @port: port for DSI if present
2116 * Return true if DSI is present, and return the port in %port.
2118 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv,
2121 const struct child_device_config *child;
2125 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2126 child = dev_priv->vbt.child_dev + i;
2128 if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
2131 dvo_port = child->dvo_port;
2133 if (dvo_port == DVO_PORT_MIPIA ||
2134 (dvo_port == DVO_PORT_MIPIB && INTEL_GEN(dev_priv) >= 11) ||
2135 (dvo_port == DVO_PORT_MIPIC && INTEL_GEN(dev_priv) < 11)) {
2137 *port = dvo_port - DVO_PORT_MIPIA;
2139 } else if (dvo_port == DVO_PORT_MIPIB ||
2140 dvo_port == DVO_PORT_MIPIC ||
2141 dvo_port == DVO_PORT_MIPID) {
2142 DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n",
2143 port_name(dvo_port - DVO_PORT_MIPIA));
2151 * intel_bios_is_port_hpd_inverted - is HPD inverted for %port
2152 * @dev_priv: i915 device instance
2153 * @port: port to check
2155 * Return true if HPD should be inverted for %port.
2158 intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
2161 const struct child_device_config *child;
2164 if (WARN_ON_ONCE(!IS_GEN9_LP(dev_priv)))
2167 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2168 child = dev_priv->vbt.child_dev + i;
2170 if (!child->hpd_invert)
2173 switch (child->dvo_port) {
2175 case DVO_PORT_HDMIA:
2180 case DVO_PORT_HDMIB:
2185 case DVO_PORT_HDMIC:
2198 * intel_bios_is_lspcon_present - if LSPCON is attached on %port
2199 * @dev_priv: i915 device instance
2200 * @port: port to check
2202 * Return true if LSPCON is present on this port
2205 intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv,
2208 const struct child_device_config *child;
2211 if (!HAS_LSPCON(dev_priv))
2214 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
2215 child = dev_priv->vbt.child_dev + i;
2220 switch (child->dvo_port) {
2222 case DVO_PORT_HDMIA:
2227 case DVO_PORT_HDMIB:
2232 case DVO_PORT_HDMIC:
2237 case DVO_PORT_HDMID:
2242 case DVO_PORT_HDMIF:
2254 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv,
2257 const struct ddi_vbt_port_info *info =
2258 &dev_priv->vbt.ddi_port_info[port];
2261 if (!info->alternate_aux_channel) {
2262 aux_ch = (enum aux_ch)port;
2264 DRM_DEBUG_KMS("using AUX %c for port %c (platform default)\n",
2265 aux_ch_name(aux_ch), port_name(port));
2269 switch (info->alternate_aux_channel) {
2289 MISSING_CASE(info->alternate_aux_channel);
2294 DRM_DEBUG_KMS("using AUX %c for port %c (VBT)\n",
2295 aux_ch_name(aux_ch), port_name(port));