mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 10:19:47 +00:00
![Jani Nikula](/assets/img/avatar_default.png)
The hardware state readout oopses after several warnings when trying to use HDMI on port A, if such a combination is configured in VBT. Filter the combo out already at the VBT parsing phase. v2: also ignore DVI (Ville) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102889 Cc: stable@vger.kernel.org Cc: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Daniel Drake <dan@reactivated.net> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170921141920.18172-1-jani.nikula@intel.com
1911 lines
51 KiB
C
1911 lines
51 KiB
C
/*
|
|
* Copyright © 2006 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* Authors:
|
|
* Eric Anholt <eric@anholt.net>
|
|
*
|
|
*/
|
|
|
|
#include <drm/drm_dp_helper.h>
|
|
#include <drm/drmP.h>
|
|
#include <drm/i915_drm.h>
|
|
#include "i915_drv.h"
|
|
|
|
#define _INTEL_BIOS_PRIVATE
|
|
#include "intel_vbt_defs.h"
|
|
|
|
/**
|
|
* DOC: Video BIOS Table (VBT)
|
|
*
|
|
* The Video BIOS Table, or VBT, provides platform and board specific
|
|
* configuration information to the driver that is not discoverable or available
|
|
* through other means. The configuration is mostly related to display
|
|
* hardware. The VBT is available via the ACPI OpRegion or, on older systems, in
|
|
* the PCI ROM.
|
|
*
|
|
* The VBT consists of a VBT Header (defined as &struct vbt_header), a BDB
|
|
* Header (&struct bdb_header), and a number of BIOS Data Blocks (BDB) that
|
|
* contain the actual configuration information. The VBT Header, and thus the
|
|
* VBT, begins with "$VBT" signature. The VBT Header contains the offset of the
|
|
* BDB Header. The data blocks are concatenated after the BDB Header. The data
|
|
* blocks have a 1-byte Block ID, 2-byte Block Size, and Block Size bytes of
|
|
* data. (Block 53, the MIPI Sequence Block is an exception.)
|
|
*
|
|
* The driver parses the VBT during load. The relevant information is stored in
|
|
* driver private data for ease of use, and the actual VBT is not read after
|
|
* that.
|
|
*/
|
|
|
|
#define SLAVE_ADDR1 0x70
|
|
#define SLAVE_ADDR2 0x72
|
|
|
|
/* Get BDB block size given a pointer to Block ID. */
|
|
static u32 _get_blocksize(const u8 *block_base)
|
|
{
|
|
/* The MIPI Sequence Block v3+ has a separate size field. */
|
|
if (*block_base == BDB_MIPI_SEQUENCE && *(block_base + 3) >= 3)
|
|
return *((const u32 *)(block_base + 4));
|
|
else
|
|
return *((const u16 *)(block_base + 1));
|
|
}
|
|
|
|
/* Get BDB block size give a pointer to data after Block ID and Block Size. */
|
|
static u32 get_blocksize(const void *block_data)
|
|
{
|
|
return _get_blocksize(block_data - 3);
|
|
}
|
|
|
|
static const void *
|
|
find_section(const void *_bdb, int section_id)
|
|
{
|
|
const struct bdb_header *bdb = _bdb;
|
|
const u8 *base = _bdb;
|
|
int index = 0;
|
|
u32 total, current_size;
|
|
u8 current_id;
|
|
|
|
/* skip to first section */
|
|
index += bdb->header_size;
|
|
total = bdb->bdb_size;
|
|
|
|
/* walk the sections looking for section_id */
|
|
while (index + 3 < total) {
|
|
current_id = *(base + index);
|
|
current_size = _get_blocksize(base + index);
|
|
index += 3;
|
|
|
|
if (index + current_size > total)
|
|
return NULL;
|
|
|
|
if (current_id == section_id)
|
|
return base + index;
|
|
|
|
index += current_size;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode,
|
|
const struct lvds_dvo_timing *dvo_timing)
|
|
{
|
|
panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) |
|
|
dvo_timing->hactive_lo;
|
|
panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay +
|
|
((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo);
|
|
panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start +
|
|
((dvo_timing->hsync_pulse_width_hi << 8) |
|
|
dvo_timing->hsync_pulse_width_lo);
|
|
panel_fixed_mode->htotal = panel_fixed_mode->hdisplay +
|
|
((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo);
|
|
|
|
panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) |
|
|
dvo_timing->vactive_lo;
|
|
panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay +
|
|
((dvo_timing->vsync_off_hi << 4) | dvo_timing->vsync_off_lo);
|
|
panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
|
|
((dvo_timing->vsync_pulse_width_hi << 4) |
|
|
dvo_timing->vsync_pulse_width_lo);
|
|
panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay +
|
|
((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo);
|
|
panel_fixed_mode->clock = dvo_timing->clock * 10;
|
|
panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
|
|
|
|
if (dvo_timing->hsync_positive)
|
|
panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC;
|
|
else
|
|
panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC;
|
|
|
|
if (dvo_timing->vsync_positive)
|
|
panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC;
|
|
else
|
|
panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC;
|
|
|
|
panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) |
|
|
dvo_timing->himage_lo;
|
|
panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) |
|
|
dvo_timing->vimage_lo;
|
|
|
|
/* Some VBTs have bogus h/vtotal values */
|
|
if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
|
|
panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
|
|
if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
|
|
panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
|
|
|
|
drm_mode_set_name(panel_fixed_mode);
|
|
}
|
|
|
|
static const struct lvds_dvo_timing *
|
|
get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data,
|
|
const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs,
|
|
int index)
|
|
{
|
|
/*
|
|
* the size of fp_timing varies on the different platform.
|
|
* So calculate the DVO timing relative offset in LVDS data
|
|
* entry to get the DVO timing entry
|
|
*/
|
|
|
|
int lfp_data_size =
|
|
lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset -
|
|
lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset;
|
|
int dvo_timing_offset =
|
|
lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset -
|
|
lvds_lfp_data_ptrs->ptr[0].fp_timing_offset;
|
|
char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index;
|
|
|
|
return (struct lvds_dvo_timing *)(entry + dvo_timing_offset);
|
|
}
|
|
|
|
/* get lvds_fp_timing entry
|
|
* this function may return NULL if the corresponding entry is invalid
|
|
*/
|
|
static const struct lvds_fp_timing *
|
|
get_lvds_fp_timing(const struct bdb_header *bdb,
|
|
const struct bdb_lvds_lfp_data *data,
|
|
const struct bdb_lvds_lfp_data_ptrs *ptrs,
|
|
int index)
|
|
{
|
|
size_t data_ofs = (const u8 *)data - (const u8 *)bdb;
|
|
u16 data_size = ((const u16 *)data)[-1]; /* stored in header */
|
|
size_t ofs;
|
|
|
|
if (index >= ARRAY_SIZE(ptrs->ptr))
|
|
return NULL;
|
|
ofs = ptrs->ptr[index].fp_timing_offset;
|
|
if (ofs < data_ofs ||
|
|
ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size)
|
|
return NULL;
|
|
return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
|
|
}
|
|
|
|
/* Try to find integrated panel data */
|
|
static void
|
|
parse_lfp_panel_data(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_lvds_options *lvds_options;
|
|
const struct bdb_lvds_lfp_data *lvds_lfp_data;
|
|
const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
|
|
const struct lvds_dvo_timing *panel_dvo_timing;
|
|
const struct lvds_fp_timing *fp_timing;
|
|
struct drm_display_mode *panel_fixed_mode;
|
|
int panel_type;
|
|
int drrs_mode;
|
|
int ret;
|
|
|
|
lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
|
|
if (!lvds_options)
|
|
return;
|
|
|
|
dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
|
|
|
|
ret = intel_opregion_get_panel_type(dev_priv);
|
|
if (ret >= 0) {
|
|
WARN_ON(ret > 0xf);
|
|
panel_type = ret;
|
|
DRM_DEBUG_KMS("Panel type: %d (OpRegion)\n", panel_type);
|
|
} else {
|
|
if (lvds_options->panel_type > 0xf) {
|
|
DRM_DEBUG_KMS("Invalid VBT panel type 0x%x\n",
|
|
lvds_options->panel_type);
|
|
return;
|
|
}
|
|
panel_type = lvds_options->panel_type;
|
|
DRM_DEBUG_KMS("Panel type: %d (VBT)\n", panel_type);
|
|
}
|
|
|
|
dev_priv->vbt.panel_type = panel_type;
|
|
|
|
drrs_mode = (lvds_options->dps_panel_type_bits
|
|
>> (panel_type * 2)) & MODE_MASK;
|
|
/*
|
|
* VBT has static DRRS = 0 and seamless DRRS = 2.
|
|
* The below piece of code is required to adjust vbt.drrs_type
|
|
* to match the enum drrs_support_type.
|
|
*/
|
|
switch (drrs_mode) {
|
|
case 0:
|
|
dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT;
|
|
DRM_DEBUG_KMS("DRRS supported mode is static\n");
|
|
break;
|
|
case 2:
|
|
dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT;
|
|
DRM_DEBUG_KMS("DRRS supported mode is seamless\n");
|
|
break;
|
|
default:
|
|
dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
|
|
DRM_DEBUG_KMS("DRRS not supported (VBT input)\n");
|
|
break;
|
|
}
|
|
|
|
lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
|
|
if (!lvds_lfp_data)
|
|
return;
|
|
|
|
lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS);
|
|
if (!lvds_lfp_data_ptrs)
|
|
return;
|
|
|
|
dev_priv->vbt.lvds_vbt = 1;
|
|
|
|
panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
|
|
lvds_lfp_data_ptrs,
|
|
panel_type);
|
|
|
|
panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
|
|
if (!panel_fixed_mode)
|
|
return;
|
|
|
|
fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing);
|
|
|
|
dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode;
|
|
|
|
DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
|
|
drm_mode_debug_printmodeline(panel_fixed_mode);
|
|
|
|
fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
|
|
lvds_lfp_data_ptrs,
|
|
panel_type);
|
|
if (fp_timing) {
|
|
/* check the resolution, just to be sure */
|
|
if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
|
|
fp_timing->y_res == panel_fixed_mode->vdisplay) {
|
|
dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
|
|
DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
|
|
dev_priv->vbt.bios_lvds_val);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_lfp_backlight(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_lfp_backlight_data *backlight_data;
|
|
const struct bdb_lfp_backlight_data_entry *entry;
|
|
int panel_type = dev_priv->vbt.panel_type;
|
|
|
|
backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT);
|
|
if (!backlight_data)
|
|
return;
|
|
|
|
if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
|
|
DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n",
|
|
backlight_data->entry_size);
|
|
return;
|
|
}
|
|
|
|
entry = &backlight_data->data[panel_type];
|
|
|
|
dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
|
|
if (!dev_priv->vbt.backlight.present) {
|
|
DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n",
|
|
entry->type);
|
|
return;
|
|
}
|
|
|
|
dev_priv->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
|
|
if (bdb->version >= 191 &&
|
|
get_blocksize(backlight_data) >= sizeof(*backlight_data)) {
|
|
const struct bdb_lfp_backlight_control_method *method;
|
|
|
|
method = &backlight_data->backlight_control[panel_type];
|
|
dev_priv->vbt.backlight.type = method->type;
|
|
dev_priv->vbt.backlight.controller = method->controller;
|
|
}
|
|
|
|
dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
|
|
dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm;
|
|
dev_priv->vbt.backlight.min_brightness = entry->min_brightness;
|
|
DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
|
|
"active %s, min brightness %u, level %u, controller %u\n",
|
|
dev_priv->vbt.backlight.pwm_freq_hz,
|
|
dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
|
|
dev_priv->vbt.backlight.min_brightness,
|
|
backlight_data->level[panel_type],
|
|
dev_priv->vbt.backlight.controller);
|
|
}
|
|
|
|
/* Try to find sdvo panel data */
|
|
static void
|
|
parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct lvds_dvo_timing *dvo_timing;
|
|
struct drm_display_mode *panel_fixed_mode;
|
|
int index;
|
|
|
|
index = i915_modparams.vbt_sdvo_panel_type;
|
|
if (index == -2) {
|
|
DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
|
|
return;
|
|
}
|
|
|
|
if (index == -1) {
|
|
const struct bdb_sdvo_lvds_options *sdvo_lvds_options;
|
|
|
|
sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
|
|
if (!sdvo_lvds_options)
|
|
return;
|
|
|
|
index = sdvo_lvds_options->panel_type;
|
|
}
|
|
|
|
dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
|
|
if (!dvo_timing)
|
|
return;
|
|
|
|
panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
|
|
if (!panel_fixed_mode)
|
|
return;
|
|
|
|
fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
|
|
|
|
dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode;
|
|
|
|
DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
|
|
drm_mode_debug_printmodeline(panel_fixed_mode);
|
|
}
|
|
|
|
static int intel_bios_ssc_frequency(struct drm_i915_private *dev_priv,
|
|
bool alternate)
|
|
{
|
|
switch (INTEL_INFO(dev_priv)->gen) {
|
|
case 2:
|
|
return alternate ? 66667 : 48000;
|
|
case 3:
|
|
case 4:
|
|
return alternate ? 100000 : 96000;
|
|
default:
|
|
return alternate ? 100000 : 120000;
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_general_features(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_general_features *general;
|
|
|
|
general = find_section(bdb, BDB_GENERAL_FEATURES);
|
|
if (!general)
|
|
return;
|
|
|
|
dev_priv->vbt.int_tv_support = general->int_tv_support;
|
|
/* int_crt_support can't be trusted on earlier platforms */
|
|
if (bdb->version >= 155 &&
|
|
(HAS_DDI(dev_priv) || IS_VALLEYVIEW(dev_priv)))
|
|
dev_priv->vbt.int_crt_support = general->int_crt_support;
|
|
dev_priv->vbt.lvds_use_ssc = general->enable_ssc;
|
|
dev_priv->vbt.lvds_ssc_freq =
|
|
intel_bios_ssc_frequency(dev_priv, general->ssc_freq);
|
|
dev_priv->vbt.display_clock_mode = general->display_clock_mode;
|
|
dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
|
|
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",
|
|
dev_priv->vbt.int_tv_support,
|
|
dev_priv->vbt.int_crt_support,
|
|
dev_priv->vbt.lvds_use_ssc,
|
|
dev_priv->vbt.lvds_ssc_freq,
|
|
dev_priv->vbt.display_clock_mode,
|
|
dev_priv->vbt.fdi_rx_polarity_inverted);
|
|
}
|
|
|
|
static void
|
|
parse_general_definitions(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_general_definitions *general;
|
|
|
|
general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
|
|
if (general) {
|
|
u16 block_size = get_blocksize(general);
|
|
if (block_size >= sizeof(*general)) {
|
|
int bus_pin = general->crt_ddc_gmbus_pin;
|
|
DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
|
|
if (intel_gmbus_is_valid_pin(dev_priv, bus_pin))
|
|
dev_priv->vbt.crt_ddc_pin = bus_pin;
|
|
} else {
|
|
DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
|
|
block_size);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const struct child_device_config *
|
|
child_device_ptr(const struct bdb_general_definitions *defs, int i)
|
|
{
|
|
return (const void *) &defs->devices[i * defs->child_dev_size];
|
|
}
|
|
|
|
static void
|
|
parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
struct sdvo_device_mapping *mapping;
|
|
const struct bdb_general_definitions *defs;
|
|
const struct child_device_config *child;
|
|
int i, child_device_num, count;
|
|
u16 block_size;
|
|
|
|
defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
|
|
if (!defs) {
|
|
DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Only parse SDVO mappings when the general definitions block child
|
|
* device size matches that of the *legacy* child device config
|
|
* struct. Thus, SDVO mapping will be skipped for newer VBT.
|
|
*/
|
|
if (defs->child_dev_size != LEGACY_CHILD_DEVICE_CONFIG_SIZE) {
|
|
DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n");
|
|
return;
|
|
}
|
|
/* get the block size of general definitions */
|
|
block_size = get_blocksize(defs);
|
|
/* get the number of child device */
|
|
child_device_num = (block_size - sizeof(*defs)) / defs->child_dev_size;
|
|
count = 0;
|
|
for (i = 0; i < child_device_num; i++) {
|
|
child = child_device_ptr(defs, i);
|
|
if (!child->device_type) {
|
|
/* skip the device block if device type is invalid */
|
|
continue;
|
|
}
|
|
if (child->slave_addr != SLAVE_ADDR1 &&
|
|
child->slave_addr != SLAVE_ADDR2) {
|
|
/*
|
|
* If the slave address is neither 0x70 nor 0x72,
|
|
* it is not a SDVO device. Skip it.
|
|
*/
|
|
continue;
|
|
}
|
|
if (child->dvo_port != DEVICE_PORT_DVOB &&
|
|
child->dvo_port != DEVICE_PORT_DVOC) {
|
|
/* skip the incorrect SDVO port */
|
|
DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n");
|
|
continue;
|
|
}
|
|
DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
|
|
" %s port\n",
|
|
child->slave_addr,
|
|
(child->dvo_port == DEVICE_PORT_DVOB) ?
|
|
"SDVOB" : "SDVOC");
|
|
mapping = &dev_priv->vbt.sdvo_mappings[child->dvo_port - 1];
|
|
if (!mapping->initialized) {
|
|
mapping->dvo_port = child->dvo_port;
|
|
mapping->slave_addr = child->slave_addr;
|
|
mapping->dvo_wiring = child->dvo_wiring;
|
|
mapping->ddc_pin = child->ddc_pin;
|
|
mapping->i2c_pin = child->i2c_pin;
|
|
mapping->initialized = 1;
|
|
DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
|
|
mapping->dvo_port,
|
|
mapping->slave_addr,
|
|
mapping->dvo_wiring,
|
|
mapping->ddc_pin,
|
|
mapping->i2c_pin);
|
|
} else {
|
|
DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
|
|
"two SDVO device.\n");
|
|
}
|
|
if (child->slave2_addr) {
|
|
/* Maybe this is a SDVO device with multiple inputs */
|
|
/* And the mapping info is not added */
|
|
DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
|
|
" is a SDVO device with multiple inputs.\n");
|
|
}
|
|
count++;
|
|
}
|
|
|
|
if (!count) {
|
|
/* No SDVO device info is found */
|
|
DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void
|
|
parse_driver_features(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_driver_features *driver;
|
|
|
|
driver = find_section(bdb, BDB_DRIVER_FEATURES);
|
|
if (!driver)
|
|
return;
|
|
|
|
if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
|
|
dev_priv->vbt.edp.support = 1;
|
|
|
|
DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
|
|
/*
|
|
* If DRRS is not supported, drrs_type has to be set to 0.
|
|
* This is because, VBT is configured in such a way that
|
|
* static DRRS is 0 and DRRS not supported is represented by
|
|
* driver->drrs_enabled=false
|
|
*/
|
|
if (!driver->drrs_enabled)
|
|
dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
|
|
}
|
|
|
|
static void
|
|
parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_edp *edp;
|
|
const struct edp_power_seq *edp_pps;
|
|
const struct edp_fast_link_params *edp_link_params;
|
|
int panel_type = dev_priv->vbt.panel_type;
|
|
|
|
edp = find_section(bdb, BDB_EDP);
|
|
if (!edp) {
|
|
if (dev_priv->vbt.edp.support)
|
|
DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
|
|
return;
|
|
}
|
|
|
|
switch ((edp->color_depth >> (panel_type * 2)) & 3) {
|
|
case EDP_18BPP:
|
|
dev_priv->vbt.edp.bpp = 18;
|
|
break;
|
|
case EDP_24BPP:
|
|
dev_priv->vbt.edp.bpp = 24;
|
|
break;
|
|
case EDP_30BPP:
|
|
dev_priv->vbt.edp.bpp = 30;
|
|
break;
|
|
}
|
|
|
|
/* Get the eDP sequencing and link info */
|
|
edp_pps = &edp->power_seqs[panel_type];
|
|
edp_link_params = &edp->fast_link_params[panel_type];
|
|
|
|
dev_priv->vbt.edp.pps = *edp_pps;
|
|
|
|
switch (edp_link_params->rate) {
|
|
case EDP_RATE_1_62:
|
|
dev_priv->vbt.edp.rate = DP_LINK_BW_1_62;
|
|
break;
|
|
case EDP_RATE_2_7:
|
|
dev_priv->vbt.edp.rate = DP_LINK_BW_2_7;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n",
|
|
edp_link_params->rate);
|
|
break;
|
|
}
|
|
|
|
switch (edp_link_params->lanes) {
|
|
case EDP_LANE_1:
|
|
dev_priv->vbt.edp.lanes = 1;
|
|
break;
|
|
case EDP_LANE_2:
|
|
dev_priv->vbt.edp.lanes = 2;
|
|
break;
|
|
case EDP_LANE_4:
|
|
dev_priv->vbt.edp.lanes = 4;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n",
|
|
edp_link_params->lanes);
|
|
break;
|
|
}
|
|
|
|
switch (edp_link_params->preemphasis) {
|
|
case EDP_PREEMPHASIS_NONE:
|
|
dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
|
|
break;
|
|
case EDP_PREEMPHASIS_3_5dB:
|
|
dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
|
|
break;
|
|
case EDP_PREEMPHASIS_6dB:
|
|
dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
|
|
break;
|
|
case EDP_PREEMPHASIS_9_5dB:
|
|
dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n",
|
|
edp_link_params->preemphasis);
|
|
break;
|
|
}
|
|
|
|
switch (edp_link_params->vswing) {
|
|
case EDP_VSWING_0_4V:
|
|
dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
|
|
break;
|
|
case EDP_VSWING_0_6V:
|
|
dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
|
|
break;
|
|
case EDP_VSWING_0_8V:
|
|
dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
|
|
break;
|
|
case EDP_VSWING_1_2V:
|
|
dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n",
|
|
edp_link_params->vswing);
|
|
break;
|
|
}
|
|
|
|
if (bdb->version >= 173) {
|
|
uint8_t vswing;
|
|
|
|
/* Don't read from VBT if module parameter has valid value*/
|
|
if (i915_modparams.edp_vswing) {
|
|
dev_priv->vbt.edp.low_vswing =
|
|
i915_modparams.edp_vswing == 1;
|
|
} else {
|
|
vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
|
|
dev_priv->vbt.edp.low_vswing = vswing == 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_psr *psr;
|
|
const struct psr_table *psr_table;
|
|
int panel_type = dev_priv->vbt.panel_type;
|
|
|
|
psr = find_section(bdb, BDB_PSR);
|
|
if (!psr) {
|
|
DRM_DEBUG_KMS("No PSR BDB found.\n");
|
|
return;
|
|
}
|
|
|
|
psr_table = &psr->psr_table[panel_type];
|
|
|
|
dev_priv->vbt.psr.full_link = psr_table->full_link;
|
|
dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup;
|
|
|
|
/* Allowed VBT values goes from 0 to 15 */
|
|
dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
|
|
psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
|
|
|
|
switch (psr_table->lines_to_wait) {
|
|
case 0:
|
|
dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT;
|
|
break;
|
|
case 1:
|
|
dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT;
|
|
break;
|
|
case 2:
|
|
dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT;
|
|
break;
|
|
case 3:
|
|
dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n",
|
|
psr_table->lines_to_wait);
|
|
break;
|
|
}
|
|
|
|
dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time;
|
|
dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time;
|
|
}
|
|
|
|
static void
|
|
parse_mipi_config(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_mipi_config *start;
|
|
const struct mipi_config *config;
|
|
const struct mipi_pps_data *pps;
|
|
int panel_type = dev_priv->vbt.panel_type;
|
|
|
|
/* parse MIPI blocks only if LFP type is MIPI */
|
|
if (!intel_bios_is_dsi_present(dev_priv, NULL))
|
|
return;
|
|
|
|
/* Initialize this to undefined indicating no generic MIPI support */
|
|
dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
|
|
|
|
/* Block #40 is already parsed and panel_fixed_mode is
|
|
* stored in dev_priv->lfp_lvds_vbt_mode
|
|
* resuse this when needed
|
|
*/
|
|
|
|
/* Parse #52 for panel index used from panel_type already
|
|
* parsed
|
|
*/
|
|
start = find_section(bdb, BDB_MIPI_CONFIG);
|
|
if (!start) {
|
|
DRM_DEBUG_KMS("No MIPI config BDB found");
|
|
return;
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n",
|
|
panel_type);
|
|
|
|
/*
|
|
* get hold of the correct configuration block and pps data as per
|
|
* the panel_type as index
|
|
*/
|
|
config = &start->config[panel_type];
|
|
pps = &start->pps[panel_type];
|
|
|
|
/* store as of now full data. Trim when we realise all is not needed */
|
|
dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
|
|
if (!dev_priv->vbt.dsi.config)
|
|
return;
|
|
|
|
dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
|
|
if (!dev_priv->vbt.dsi.pps) {
|
|
kfree(dev_priv->vbt.dsi.config);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* These fields are introduced from the VBT version 197 onwards,
|
|
* so making sure that these bits are set zero in the previous
|
|
* versions.
|
|
*/
|
|
if (dev_priv->vbt.dsi.config->dual_link && bdb->version < 197) {
|
|
dev_priv->vbt.dsi.config->dl_dcs_cabc_ports = 0;
|
|
dev_priv->vbt.dsi.config->dl_dcs_backlight_ports = 0;
|
|
}
|
|
|
|
/* We have mandatory mipi config blocks. Initialize as generic panel */
|
|
dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
|
|
}
|
|
|
|
/* Find the sequence block and size for the given panel. */
|
|
static const u8 *
|
|
find_panel_sequence_block(const struct bdb_mipi_sequence *sequence,
|
|
u16 panel_id, u32 *seq_size)
|
|
{
|
|
u32 total = get_blocksize(sequence);
|
|
const u8 *data = &sequence->data[0];
|
|
u8 current_id;
|
|
u32 current_size;
|
|
int header_size = sequence->version >= 3 ? 5 : 3;
|
|
int index = 0;
|
|
int i;
|
|
|
|
/* skip new block size */
|
|
if (sequence->version >= 3)
|
|
data += 4;
|
|
|
|
for (i = 0; i < MAX_MIPI_CONFIGURATIONS && index < total; i++) {
|
|
if (index + header_size > total) {
|
|
DRM_ERROR("Invalid sequence block (header)\n");
|
|
return NULL;
|
|
}
|
|
|
|
current_id = *(data + index);
|
|
if (sequence->version >= 3)
|
|
current_size = *((const u32 *)(data + index + 1));
|
|
else
|
|
current_size = *((const u16 *)(data + index + 1));
|
|
|
|
index += header_size;
|
|
|
|
if (index + current_size > total) {
|
|
DRM_ERROR("Invalid sequence block\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (current_id == panel_id) {
|
|
*seq_size = current_size;
|
|
return data + index;
|
|
}
|
|
|
|
index += current_size;
|
|
}
|
|
|
|
DRM_ERROR("Sequence block detected but no valid configuration\n");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int goto_next_sequence(const u8 *data, int index, int total)
|
|
{
|
|
u16 len;
|
|
|
|
/* Skip Sequence Byte. */
|
|
for (index = index + 1; index < total; index += len) {
|
|
u8 operation_byte = *(data + index);
|
|
index++;
|
|
|
|
switch (operation_byte) {
|
|
case MIPI_SEQ_ELEM_END:
|
|
return index;
|
|
case MIPI_SEQ_ELEM_SEND_PKT:
|
|
if (index + 4 > total)
|
|
return 0;
|
|
|
|
len = *((const u16 *)(data + index + 2)) + 4;
|
|
break;
|
|
case MIPI_SEQ_ELEM_DELAY:
|
|
len = 4;
|
|
break;
|
|
case MIPI_SEQ_ELEM_GPIO:
|
|
len = 2;
|
|
break;
|
|
case MIPI_SEQ_ELEM_I2C:
|
|
if (index + 7 > total)
|
|
return 0;
|
|
len = *(data + index + 6) + 7;
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unknown operation byte\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int goto_next_sequence_v3(const u8 *data, int index, int total)
|
|
{
|
|
int seq_end;
|
|
u16 len;
|
|
u32 size_of_sequence;
|
|
|
|
/*
|
|
* Could skip sequence based on Size of Sequence alone, but also do some
|
|
* checking on the structure.
|
|
*/
|
|
if (total < 5) {
|
|
DRM_ERROR("Too small sequence size\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Skip Sequence Byte. */
|
|
index++;
|
|
|
|
/*
|
|
* Size of Sequence. Excludes the Sequence Byte and the size itself,
|
|
* includes MIPI_SEQ_ELEM_END byte, excludes the final MIPI_SEQ_END
|
|
* byte.
|
|
*/
|
|
size_of_sequence = *((const uint32_t *)(data + index));
|
|
index += 4;
|
|
|
|
seq_end = index + size_of_sequence;
|
|
if (seq_end > total) {
|
|
DRM_ERROR("Invalid sequence size\n");
|
|
return 0;
|
|
}
|
|
|
|
for (; index < total; index += len) {
|
|
u8 operation_byte = *(data + index);
|
|
index++;
|
|
|
|
if (operation_byte == MIPI_SEQ_ELEM_END) {
|
|
if (index != seq_end) {
|
|
DRM_ERROR("Invalid element structure\n");
|
|
return 0;
|
|
}
|
|
return index;
|
|
}
|
|
|
|
len = *(data + index);
|
|
index++;
|
|
|
|
/*
|
|
* FIXME: Would be nice to check elements like for v1/v2 in
|
|
* goto_next_sequence() above.
|
|
*/
|
|
switch (operation_byte) {
|
|
case MIPI_SEQ_ELEM_SEND_PKT:
|
|
case MIPI_SEQ_ELEM_DELAY:
|
|
case MIPI_SEQ_ELEM_GPIO:
|
|
case MIPI_SEQ_ELEM_I2C:
|
|
case MIPI_SEQ_ELEM_SPI:
|
|
case MIPI_SEQ_ELEM_PMIC:
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unknown operation byte %u\n",
|
|
operation_byte);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
parse_mipi_sequence(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
int panel_type = dev_priv->vbt.panel_type;
|
|
const struct bdb_mipi_sequence *sequence;
|
|
const u8 *seq_data;
|
|
u32 seq_size;
|
|
u8 *data;
|
|
int index = 0;
|
|
|
|
/* Only our generic panel driver uses the sequence block. */
|
|
if (dev_priv->vbt.dsi.panel_id != MIPI_DSI_GENERIC_PANEL_ID)
|
|
return;
|
|
|
|
sequence = find_section(bdb, BDB_MIPI_SEQUENCE);
|
|
if (!sequence) {
|
|
DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n");
|
|
return;
|
|
}
|
|
|
|
/* Fail gracefully for forward incompatible sequence block. */
|
|
if (sequence->version >= 4) {
|
|
DRM_ERROR("Unable to parse MIPI Sequence Block v%u\n",
|
|
sequence->version);
|
|
return;
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("Found MIPI sequence block v%u\n", sequence->version);
|
|
|
|
seq_data = find_panel_sequence_block(sequence, panel_type, &seq_size);
|
|
if (!seq_data)
|
|
return;
|
|
|
|
data = kmemdup(seq_data, seq_size, GFP_KERNEL);
|
|
if (!data)
|
|
return;
|
|
|
|
/* Parse the sequences, store pointers to each sequence. */
|
|
for (;;) {
|
|
u8 seq_id = *(data + index);
|
|
if (seq_id == MIPI_SEQ_END)
|
|
break;
|
|
|
|
if (seq_id >= MIPI_SEQ_MAX) {
|
|
DRM_ERROR("Unknown sequence %u\n", seq_id);
|
|
goto err;
|
|
}
|
|
|
|
/* Log about presence of sequences we won't run. */
|
|
if (seq_id == MIPI_SEQ_TEAR_ON || seq_id == MIPI_SEQ_TEAR_OFF)
|
|
DRM_DEBUG_KMS("Unsupported sequence %u\n", seq_id);
|
|
|
|
dev_priv->vbt.dsi.sequence[seq_id] = data + index;
|
|
|
|
if (sequence->version >= 3)
|
|
index = goto_next_sequence_v3(data, index, seq_size);
|
|
else
|
|
index = goto_next_sequence(data, index, seq_size);
|
|
if (!index) {
|
|
DRM_ERROR("Invalid sequence %u\n", seq_id);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
dev_priv->vbt.dsi.data = data;
|
|
dev_priv->vbt.dsi.size = seq_size;
|
|
dev_priv->vbt.dsi.seq_version = sequence->version;
|
|
|
|
DRM_DEBUG_DRIVER("MIPI related VBT parsing complete\n");
|
|
return;
|
|
|
|
err:
|
|
kfree(data);
|
|
memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence));
|
|
}
|
|
|
|
static u8 translate_iboost(u8 val)
|
|
{
|
|
static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */
|
|
|
|
if (val >= ARRAY_SIZE(mapping)) {
|
|
DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val);
|
|
return 0;
|
|
}
|
|
return mapping[val];
|
|
}
|
|
|
|
static void sanitize_ddc_pin(struct drm_i915_private *dev_priv,
|
|
enum port port)
|
|
{
|
|
const struct ddi_vbt_port_info *info =
|
|
&dev_priv->vbt.ddi_port_info[port];
|
|
enum port p;
|
|
|
|
if (!info->alternate_ddc_pin)
|
|
return;
|
|
|
|
for_each_port_masked(p, (1 << port) - 1) {
|
|
struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p];
|
|
|
|
if (info->alternate_ddc_pin != i->alternate_ddc_pin)
|
|
continue;
|
|
|
|
DRM_DEBUG_KMS("port %c trying to use the same DDC pin (0x%x) as port %c, "
|
|
"disabling port %c DVI/HDMI support\n",
|
|
port_name(p), i->alternate_ddc_pin,
|
|
port_name(port), port_name(p));
|
|
|
|
/*
|
|
* If we have multiple ports supposedly sharing the
|
|
* pin, then dvi/hdmi couldn't exist on the shared
|
|
* port. Otherwise they share the same ddc bin and
|
|
* system couldn't communicate with them separately.
|
|
*
|
|
* Due to parsing the ports in alphabetical order,
|
|
* a higher port will always clobber a lower one.
|
|
*/
|
|
i->supports_dvi = false;
|
|
i->supports_hdmi = false;
|
|
i->alternate_ddc_pin = 0;
|
|
}
|
|
}
|
|
|
|
static void sanitize_aux_ch(struct drm_i915_private *dev_priv,
|
|
enum port port)
|
|
{
|
|
const struct ddi_vbt_port_info *info =
|
|
&dev_priv->vbt.ddi_port_info[port];
|
|
enum port p;
|
|
|
|
if (!info->alternate_aux_channel)
|
|
return;
|
|
|
|
for_each_port_masked(p, (1 << port) - 1) {
|
|
struct ddi_vbt_port_info *i = &dev_priv->vbt.ddi_port_info[p];
|
|
|
|
if (info->alternate_aux_channel != i->alternate_aux_channel)
|
|
continue;
|
|
|
|
DRM_DEBUG_KMS("port %c trying to use the same AUX CH (0x%x) as port %c, "
|
|
"disabling port %c DP support\n",
|
|
port_name(p), i->alternate_aux_channel,
|
|
port_name(port), port_name(p));
|
|
|
|
/*
|
|
* If we have multiple ports supposedlt sharing the
|
|
* aux channel, then DP couldn't exist on the shared
|
|
* port. Otherwise they share the same aux channel
|
|
* and system couldn't communicate with them separately.
|
|
*
|
|
* Due to parsing the ports in alphabetical order,
|
|
* a higher port will always clobber a lower one.
|
|
*/
|
|
i->supports_dp = false;
|
|
i->alternate_aux_channel = 0;
|
|
}
|
|
}
|
|
|
|
static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
struct child_device_config *it, *child = NULL;
|
|
struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
|
|
uint8_t hdmi_level_shift;
|
|
int i, j;
|
|
bool is_dvi, is_hdmi, is_dp, is_edp, is_crt;
|
|
uint8_t aux_channel, ddc_pin;
|
|
/* Each DDI port can have more than one value on the "DVO Port" field,
|
|
* so look for all the possible values for each port.
|
|
*/
|
|
int dvo_ports[][3] = {
|
|
{DVO_PORT_HDMIA, DVO_PORT_DPA, -1},
|
|
{DVO_PORT_HDMIB, DVO_PORT_DPB, -1},
|
|
{DVO_PORT_HDMIC, DVO_PORT_DPC, -1},
|
|
{DVO_PORT_HDMID, DVO_PORT_DPD, -1},
|
|
{DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE},
|
|
};
|
|
|
|
/*
|
|
* Find the first child device to reference the port, report if more
|
|
* than one found.
|
|
*/
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
it = dev_priv->vbt.child_dev + i;
|
|
|
|
for (j = 0; j < 3; j++) {
|
|
if (dvo_ports[port][j] == -1)
|
|
break;
|
|
|
|
if (it->dvo_port == dvo_ports[port][j]) {
|
|
if (child) {
|
|
DRM_DEBUG_KMS("More than one child device for port %c in VBT, using the first.\n",
|
|
port_name(port));
|
|
} else {
|
|
child = it;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!child)
|
|
return;
|
|
|
|
aux_channel = child->aux_channel;
|
|
ddc_pin = child->ddc_pin;
|
|
|
|
is_dvi = child->device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING;
|
|
is_dp = child->device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT;
|
|
is_crt = child->device_type & DEVICE_TYPE_ANALOG_OUTPUT;
|
|
is_hdmi = is_dvi && (child->device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0;
|
|
is_edp = is_dp && (child->device_type & DEVICE_TYPE_INTERNAL_CONNECTOR);
|
|
|
|
if (port == PORT_A && is_dvi) {
|
|
DRM_DEBUG_KMS("VBT claims port A supports DVI%s, ignoring\n",
|
|
is_hdmi ? "/HDMI" : "");
|
|
is_dvi = false;
|
|
is_hdmi = false;
|
|
}
|
|
|
|
info->supports_dvi = is_dvi;
|
|
info->supports_hdmi = is_hdmi;
|
|
info->supports_dp = is_dp;
|
|
info->supports_edp = is_edp;
|
|
|
|
DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n",
|
|
port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt);
|
|
|
|
if (is_edp && is_dvi)
|
|
DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n",
|
|
port_name(port));
|
|
if (is_crt && port != PORT_E)
|
|
DRM_DEBUG_KMS("Port %c is analog\n", port_name(port));
|
|
if (is_crt && (is_dvi || is_dp))
|
|
DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n",
|
|
port_name(port));
|
|
if (is_dvi && (port == PORT_A || port == PORT_E))
|
|
DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port));
|
|
if (!is_dvi && !is_dp && !is_crt)
|
|
DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n",
|
|
port_name(port));
|
|
if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E))
|
|
DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port));
|
|
|
|
if (is_dvi) {
|
|
info->alternate_ddc_pin = ddc_pin;
|
|
|
|
/*
|
|
* All VBTs that we got so far for B Stepping has this
|
|
* information wrong for Port D. So, let's just ignore for now.
|
|
*/
|
|
if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0) &&
|
|
port == PORT_D) {
|
|
info->alternate_ddc_pin = 0;
|
|
}
|
|
|
|
sanitize_ddc_pin(dev_priv, port);
|
|
}
|
|
|
|
if (is_dp) {
|
|
info->alternate_aux_channel = aux_channel;
|
|
|
|
sanitize_aux_ch(dev_priv, port);
|
|
}
|
|
|
|
if (bdb->version >= 158) {
|
|
/* The VBT HDMI level shift values match the table we have. */
|
|
hdmi_level_shift = child->hdmi_level_shifter_value;
|
|
DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n",
|
|
port_name(port),
|
|
hdmi_level_shift);
|
|
info->hdmi_level_shift = hdmi_level_shift;
|
|
}
|
|
|
|
/* Parse the I_boost config for SKL and above */
|
|
if (bdb->version >= 196 && child->iboost) {
|
|
info->dp_boost_level = translate_iboost(child->dp_iboost_level);
|
|
DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n",
|
|
port_name(port), info->dp_boost_level);
|
|
info->hdmi_boost_level = translate_iboost(child->hdmi_iboost_level);
|
|
DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n",
|
|
port_name(port), info->hdmi_boost_level);
|
|
}
|
|
}
|
|
|
|
static void parse_ddi_ports(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
enum port port;
|
|
|
|
if (!HAS_DDI(dev_priv))
|
|
return;
|
|
|
|
if (!dev_priv->vbt.child_dev_num)
|
|
return;
|
|
|
|
if (bdb->version < 155)
|
|
return;
|
|
|
|
for (port = PORT_A; port < I915_MAX_PORTS; port++)
|
|
parse_ddi_port(dev_priv, port, bdb);
|
|
}
|
|
|
|
static void
|
|
parse_device_mapping(struct drm_i915_private *dev_priv,
|
|
const struct bdb_header *bdb)
|
|
{
|
|
const struct bdb_general_definitions *defs;
|
|
const struct child_device_config *child;
|
|
struct child_device_config *child_dev_ptr;
|
|
int i, child_device_num, count;
|
|
u8 expected_size;
|
|
u16 block_size;
|
|
|
|
defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
|
|
if (!defs) {
|
|
DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
|
|
return;
|
|
}
|
|
if (bdb->version < 106) {
|
|
expected_size = 22;
|
|
} else if (bdb->version < 111) {
|
|
expected_size = 27;
|
|
} else if (bdb->version < 195) {
|
|
expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
|
|
} else if (bdb->version == 195) {
|
|
expected_size = 37;
|
|
} else if (bdb->version <= 197) {
|
|
expected_size = 38;
|
|
} else {
|
|
expected_size = 38;
|
|
BUILD_BUG_ON(sizeof(*child) < 38);
|
|
DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n",
|
|
bdb->version, expected_size);
|
|
}
|
|
|
|
/* Flag an error for unexpected size, but continue anyway. */
|
|
if (defs->child_dev_size != expected_size)
|
|
DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n",
|
|
defs->child_dev_size, expected_size, bdb->version);
|
|
|
|
/* The legacy sized child device config is the minimum we need. */
|
|
if (defs->child_dev_size < LEGACY_CHILD_DEVICE_CONFIG_SIZE) {
|
|
DRM_DEBUG_KMS("Child device config size %u is too small.\n",
|
|
defs->child_dev_size);
|
|
return;
|
|
}
|
|
|
|
/* get the block size of general definitions */
|
|
block_size = get_blocksize(defs);
|
|
/* get the number of child device */
|
|
child_device_num = (block_size - sizeof(*defs)) / defs->child_dev_size;
|
|
count = 0;
|
|
/* get the number of child device that is present */
|
|
for (i = 0; i < child_device_num; i++) {
|
|
child = child_device_ptr(defs, i);
|
|
if (!child->device_type) {
|
|
/* skip the device block if device type is invalid */
|
|
continue;
|
|
}
|
|
count++;
|
|
}
|
|
if (!count) {
|
|
DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
|
|
return;
|
|
}
|
|
dev_priv->vbt.child_dev = kcalloc(count, sizeof(*child), GFP_KERNEL);
|
|
if (!dev_priv->vbt.child_dev) {
|
|
DRM_DEBUG_KMS("No memory space for child device\n");
|
|
return;
|
|
}
|
|
|
|
dev_priv->vbt.child_dev_num = count;
|
|
count = 0;
|
|
for (i = 0; i < child_device_num; i++) {
|
|
child = child_device_ptr(defs, i);
|
|
if (!child->device_type) {
|
|
/* skip the device block if device type is invalid */
|
|
continue;
|
|
}
|
|
|
|
child_dev_ptr = dev_priv->vbt.child_dev + count;
|
|
count++;
|
|
|
|
/*
|
|
* Copy as much as we know (sizeof) and is available
|
|
* (child_dev_size) of the child device. Accessing the data must
|
|
* depend on VBT version.
|
|
*/
|
|
memcpy(child_dev_ptr, child,
|
|
min_t(size_t, defs->child_dev_size, sizeof(*child)));
|
|
|
|
/*
|
|
* copied full block, now init values when they are not
|
|
* available in current version
|
|
*/
|
|
if (bdb->version < 196) {
|
|
/* Set default values for bits added from v196 */
|
|
child_dev_ptr->iboost = 0;
|
|
child_dev_ptr->hpd_invert = 0;
|
|
}
|
|
|
|
if (bdb->version < 192)
|
|
child_dev_ptr->lspcon = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Common defaults which may be overridden by VBT. */
|
|
static void
|
|
init_vbt_defaults(struct drm_i915_private *dev_priv)
|
|
{
|
|
enum port port;
|
|
|
|
dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC;
|
|
|
|
/* Default to having backlight */
|
|
dev_priv->vbt.backlight.present = true;
|
|
|
|
/* LFP panel data */
|
|
dev_priv->vbt.lvds_dither = 1;
|
|
dev_priv->vbt.lvds_vbt = 0;
|
|
|
|
/* SDVO panel data */
|
|
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
|
|
|
|
/* general features */
|
|
dev_priv->vbt.int_tv_support = 1;
|
|
dev_priv->vbt.int_crt_support = 1;
|
|
|
|
/* Default to using SSC */
|
|
dev_priv->vbt.lvds_use_ssc = 1;
|
|
/*
|
|
* Core/SandyBridge/IvyBridge use alternative (120MHz) reference
|
|
* clock for LVDS.
|
|
*/
|
|
dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev_priv,
|
|
!HAS_PCH_SPLIT(dev_priv));
|
|
DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq);
|
|
|
|
for (port = PORT_A; port < I915_MAX_PORTS; port++) {
|
|
struct ddi_vbt_port_info *info =
|
|
&dev_priv->vbt.ddi_port_info[port];
|
|
|
|
info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/* Defaults to initialize only if there is no VBT. */
|
|
static void
|
|
init_vbt_missing_defaults(struct drm_i915_private *dev_priv)
|
|
{
|
|
enum port port;
|
|
|
|
for (port = PORT_A; port < I915_MAX_PORTS; port++) {
|
|
struct ddi_vbt_port_info *info =
|
|
&dev_priv->vbt.ddi_port_info[port];
|
|
|
|
info->supports_dvi = (port != PORT_A && port != PORT_E);
|
|
info->supports_hdmi = info->supports_dvi;
|
|
info->supports_dp = (port != PORT_E);
|
|
}
|
|
}
|
|
|
|
static const struct bdb_header *get_bdb_header(const struct vbt_header *vbt)
|
|
{
|
|
const void *_vbt = vbt;
|
|
|
|
return _vbt + vbt->bdb_offset;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_valid_vbt - does the given buffer contain a valid VBT
|
|
* @buf: pointer to a buffer to validate
|
|
* @size: size of the buffer
|
|
*
|
|
* Returns true on valid VBT.
|
|
*/
|
|
bool intel_bios_is_valid_vbt(const void *buf, size_t size)
|
|
{
|
|
const struct vbt_header *vbt = buf;
|
|
const struct bdb_header *bdb;
|
|
|
|
if (!vbt)
|
|
return false;
|
|
|
|
if (sizeof(struct vbt_header) > size) {
|
|
DRM_DEBUG_DRIVER("VBT header incomplete\n");
|
|
return false;
|
|
}
|
|
|
|
if (memcmp(vbt->signature, "$VBT", 4)) {
|
|
DRM_DEBUG_DRIVER("VBT invalid signature\n");
|
|
return false;
|
|
}
|
|
|
|
if (range_overflows_t(size_t,
|
|
vbt->bdb_offset,
|
|
sizeof(struct bdb_header),
|
|
size)) {
|
|
DRM_DEBUG_DRIVER("BDB header incomplete\n");
|
|
return false;
|
|
}
|
|
|
|
bdb = get_bdb_header(vbt);
|
|
if (range_overflows_t(size_t, vbt->bdb_offset, bdb->bdb_size, size)) {
|
|
DRM_DEBUG_DRIVER("BDB incomplete\n");
|
|
return false;
|
|
}
|
|
|
|
return vbt;
|
|
}
|
|
|
|
static const struct vbt_header *find_vbt(void __iomem *bios, size_t size)
|
|
{
|
|
size_t i;
|
|
|
|
/* Scour memory looking for the VBT signature. */
|
|
for (i = 0; i + 4 < size; i++) {
|
|
void *vbt;
|
|
|
|
if (ioread32(bios + i) != *((const u32 *) "$VBT"))
|
|
continue;
|
|
|
|
/*
|
|
* This is the one place where we explicitly discard the address
|
|
* space (__iomem) of the BIOS/VBT.
|
|
*/
|
|
vbt = (void __force *) bios + i;
|
|
if (intel_bios_is_valid_vbt(vbt, size - i))
|
|
return vbt;
|
|
|
|
break;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_init - find VBT and initialize settings from the BIOS
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Parse and initialize settings from the Video BIOS Tables (VBT). If the VBT
|
|
* was not found in ACPI OpRegion, try to find it in PCI ROM first. Also
|
|
* initialize some defaults if the VBT is not present at all.
|
|
*/
|
|
void intel_bios_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct pci_dev *pdev = dev_priv->drm.pdev;
|
|
const struct vbt_header *vbt = dev_priv->opregion.vbt;
|
|
const struct bdb_header *bdb;
|
|
u8 __iomem *bios = NULL;
|
|
|
|
if (HAS_PCH_NOP(dev_priv)) {
|
|
DRM_DEBUG_KMS("Skipping VBT init due to disabled display.\n");
|
|
return;
|
|
}
|
|
|
|
init_vbt_defaults(dev_priv);
|
|
|
|
/* If the OpRegion does not have VBT, look in PCI ROM. */
|
|
if (!vbt) {
|
|
size_t size;
|
|
|
|
bios = pci_map_rom(pdev, &size);
|
|
if (!bios)
|
|
goto out;
|
|
|
|
vbt = find_vbt(bios, size);
|
|
if (!vbt)
|
|
goto out;
|
|
|
|
DRM_DEBUG_KMS("Found valid VBT in PCI ROM\n");
|
|
}
|
|
|
|
bdb = get_bdb_header(vbt);
|
|
|
|
DRM_DEBUG_KMS("VBT signature \"%.*s\", BDB version %d\n",
|
|
(int)sizeof(vbt->signature), vbt->signature, bdb->version);
|
|
|
|
/* Grab useful general definitions */
|
|
parse_general_features(dev_priv, bdb);
|
|
parse_general_definitions(dev_priv, bdb);
|
|
parse_lfp_panel_data(dev_priv, bdb);
|
|
parse_lfp_backlight(dev_priv, bdb);
|
|
parse_sdvo_panel_data(dev_priv, bdb);
|
|
parse_sdvo_device_mapping(dev_priv, bdb);
|
|
parse_device_mapping(dev_priv, bdb);
|
|
parse_driver_features(dev_priv, bdb);
|
|
parse_edp(dev_priv, bdb);
|
|
parse_psr(dev_priv, bdb);
|
|
parse_mipi_config(dev_priv, bdb);
|
|
parse_mipi_sequence(dev_priv, bdb);
|
|
parse_ddi_ports(dev_priv, bdb);
|
|
|
|
out:
|
|
if (!vbt) {
|
|
DRM_INFO("Failed to find VBIOS tables (VBT)\n");
|
|
init_vbt_missing_defaults(dev_priv);
|
|
}
|
|
|
|
if (bios)
|
|
pci_unmap_rom(pdev, bios);
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_tv_present - is integrated TV present in VBT
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Return true if TV is present. If no child devices were parsed from VBT,
|
|
* assume TV is present.
|
|
*/
|
|
bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv)
|
|
{
|
|
const struct child_device_config *child;
|
|
int i;
|
|
|
|
if (!dev_priv->vbt.int_tv_support)
|
|
return false;
|
|
|
|
if (!dev_priv->vbt.child_dev_num)
|
|
return true;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
/*
|
|
* If the device type is not TV, continue.
|
|
*/
|
|
switch (child->device_type) {
|
|
case DEVICE_TYPE_INT_TV:
|
|
case DEVICE_TYPE_TV:
|
|
case DEVICE_TYPE_TV_SVIDEO_COMPOSITE:
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
/* Only when the addin_offset is non-zero, it is regarded
|
|
* as present.
|
|
*/
|
|
if (child->addin_offset)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_lvds_present - is LVDS present in VBT
|
|
* @dev_priv: i915 device instance
|
|
* @i2c_pin: i2c pin for LVDS if present
|
|
*
|
|
* Return true if LVDS is present. If no child devices were parsed from VBT,
|
|
* assume LVDS is present.
|
|
*/
|
|
bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin)
|
|
{
|
|
const struct child_device_config *child;
|
|
int i;
|
|
|
|
if (!dev_priv->vbt.child_dev_num)
|
|
return true;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
/* If the device type is not LFP, continue.
|
|
* We have to check both the new identifiers as well as the
|
|
* old for compatibility with some BIOSes.
|
|
*/
|
|
if (child->device_type != DEVICE_TYPE_INT_LFP &&
|
|
child->device_type != DEVICE_TYPE_LFP)
|
|
continue;
|
|
|
|
if (intel_gmbus_is_valid_pin(dev_priv, child->i2c_pin))
|
|
*i2c_pin = child->i2c_pin;
|
|
|
|
/* However, we cannot trust the BIOS writers to populate
|
|
* the VBT correctly. Since LVDS requires additional
|
|
* information from AIM blocks, a non-zero addin offset is
|
|
* a good indicator that the LVDS is actually present.
|
|
*/
|
|
if (child->addin_offset)
|
|
return true;
|
|
|
|
/* But even then some BIOS writers perform some black magic
|
|
* and instantiate the device without reference to any
|
|
* additional data. Trust that if the VBT was written into
|
|
* the OpRegion then they have validated the LVDS's existence.
|
|
*/
|
|
if (dev_priv->opregion.vbt)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_port_present - is the specified digital port present
|
|
* @dev_priv: i915 device instance
|
|
* @port: port to check
|
|
*
|
|
* Return true if the device in %port is present.
|
|
*/
|
|
bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port)
|
|
{
|
|
const struct child_device_config *child;
|
|
static const struct {
|
|
u16 dp, hdmi;
|
|
} port_mapping[] = {
|
|
[PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
|
|
[PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
|
|
[PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
|
|
[PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
|
|
};
|
|
int i;
|
|
|
|
/* FIXME maybe deal with port A as well? */
|
|
if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping))
|
|
return false;
|
|
|
|
if (!dev_priv->vbt.child_dev_num)
|
|
return false;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if ((child->dvo_port == port_mapping[port].dp ||
|
|
child->dvo_port == port_mapping[port].hdmi) &&
|
|
(child->device_type & (DEVICE_TYPE_TMDS_DVI_SIGNALING |
|
|
DEVICE_TYPE_DISPLAYPORT_OUTPUT)))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_port_edp - is the device in given port eDP
|
|
* @dev_priv: i915 device instance
|
|
* @port: port to check
|
|
*
|
|
* Return true if the device in %port is eDP.
|
|
*/
|
|
bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
|
|
{
|
|
const struct child_device_config *child;
|
|
static const short port_mapping[] = {
|
|
[PORT_B] = DVO_PORT_DPB,
|
|
[PORT_C] = DVO_PORT_DPC,
|
|
[PORT_D] = DVO_PORT_DPD,
|
|
[PORT_E] = DVO_PORT_DPE,
|
|
};
|
|
int i;
|
|
|
|
if (HAS_DDI(dev_priv))
|
|
return dev_priv->vbt.ddi_port_info[port].supports_edp;
|
|
|
|
if (!dev_priv->vbt.child_dev_num)
|
|
return false;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if (child->dvo_port == port_mapping[port] &&
|
|
(child->device_type & DEVICE_TYPE_eDP_BITS) ==
|
|
(DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool child_dev_is_dp_dual_mode(const struct child_device_config *child,
|
|
enum port port)
|
|
{
|
|
static const struct {
|
|
u16 dp, hdmi;
|
|
} port_mapping[] = {
|
|
/*
|
|
* Buggy VBTs may declare DP ports as having
|
|
* HDMI type dvo_port :( So let's check both.
|
|
*/
|
|
[PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, },
|
|
[PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, },
|
|
[PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, },
|
|
[PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, },
|
|
};
|
|
|
|
if (port == PORT_A || port >= ARRAY_SIZE(port_mapping))
|
|
return false;
|
|
|
|
if ((child->device_type & DEVICE_TYPE_DP_DUAL_MODE_BITS) !=
|
|
(DEVICE_TYPE_DP_DUAL_MODE & DEVICE_TYPE_DP_DUAL_MODE_BITS))
|
|
return false;
|
|
|
|
if (child->dvo_port == port_mapping[port].dp)
|
|
return true;
|
|
|
|
/* Only accept a HDMI dvo_port as DP++ if it has an AUX channel */
|
|
if (child->dvo_port == port_mapping[port].hdmi &&
|
|
child->aux_channel != 0)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv,
|
|
enum port port)
|
|
{
|
|
const struct child_device_config *child;
|
|
int i;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if (child_dev_is_dp_dual_mode(child, port))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_dsi_present - is DSI present in VBT
|
|
* @dev_priv: i915 device instance
|
|
* @port: port for DSI if present
|
|
*
|
|
* Return true if DSI is present, and return the port in %port.
|
|
*/
|
|
bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv,
|
|
enum port *port)
|
|
{
|
|
const struct child_device_config *child;
|
|
u8 dvo_port;
|
|
int i;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if (!(child->device_type & DEVICE_TYPE_MIPI_OUTPUT))
|
|
continue;
|
|
|
|
dvo_port = child->dvo_port;
|
|
|
|
switch (dvo_port) {
|
|
case DVO_PORT_MIPIA:
|
|
case DVO_PORT_MIPIC:
|
|
if (port)
|
|
*port = dvo_port - DVO_PORT_MIPIA;
|
|
return true;
|
|
case DVO_PORT_MIPIB:
|
|
case DVO_PORT_MIPID:
|
|
DRM_DEBUG_KMS("VBT has unsupported DSI port %c\n",
|
|
port_name(dvo_port - DVO_PORT_MIPIA));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_port_hpd_inverted - is HPD inverted for %port
|
|
* @dev_priv: i915 device instance
|
|
* @port: port to check
|
|
*
|
|
* Return true if HPD should be inverted for %port.
|
|
*/
|
|
bool
|
|
intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv,
|
|
enum port port)
|
|
{
|
|
const struct child_device_config *child;
|
|
int i;
|
|
|
|
if (WARN_ON_ONCE(!IS_GEN9_LP(dev_priv)))
|
|
return false;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if (!child->hpd_invert)
|
|
continue;
|
|
|
|
switch (child->dvo_port) {
|
|
case DVO_PORT_DPA:
|
|
case DVO_PORT_HDMIA:
|
|
if (port == PORT_A)
|
|
return true;
|
|
break;
|
|
case DVO_PORT_DPB:
|
|
case DVO_PORT_HDMIB:
|
|
if (port == PORT_B)
|
|
return true;
|
|
break;
|
|
case DVO_PORT_DPC:
|
|
case DVO_PORT_HDMIC:
|
|
if (port == PORT_C)
|
|
return true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_bios_is_lspcon_present - if LSPCON is attached on %port
|
|
* @dev_priv: i915 device instance
|
|
* @port: port to check
|
|
*
|
|
* Return true if LSPCON is present on this port
|
|
*/
|
|
bool
|
|
intel_bios_is_lspcon_present(struct drm_i915_private *dev_priv,
|
|
enum port port)
|
|
{
|
|
const struct child_device_config *child;
|
|
int i;
|
|
|
|
if (!HAS_LSPCON(dev_priv))
|
|
return false;
|
|
|
|
for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
|
|
child = dev_priv->vbt.child_dev + i;
|
|
|
|
if (!child->lspcon)
|
|
continue;
|
|
|
|
switch (child->dvo_port) {
|
|
case DVO_PORT_DPA:
|
|
case DVO_PORT_HDMIA:
|
|
if (port == PORT_A)
|
|
return true;
|
|
break;
|
|
case DVO_PORT_DPB:
|
|
case DVO_PORT_HDMIB:
|
|
if (port == PORT_B)
|
|
return true;
|
|
break;
|
|
case DVO_PORT_DPC:
|
|
case DVO_PORT_HDMIC:
|
|
if (port == PORT_C)
|
|
return true;
|
|
break;
|
|
case DVO_PORT_DPD:
|
|
case DVO_PORT_HDMID:
|
|
if (port == PORT_D)
|
|
return true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|