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path: root/drivers/gpu/drm/drm_edid.c
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Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
-rw-r--r--drivers/gpu/drm/drm_edid.c109
1 files changed, 72 insertions, 37 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 12893e7be89b..561f53831e29 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -93,6 +93,8 @@ static int oui(u8 first, u8 second, u8 third)
/* Non desktop display (i.e. HMD) */
#define EDID_QUIRK_NON_DESKTOP (1 << 12)
+#define MICROSOFT_IEEE_OUI 0xca125c
+
struct detailed_mode_closure {
struct drm_connector *connector;
struct edid *edid;
@@ -212,9 +214,7 @@ static const struct edid_quirk {
/* Windows Mixed Reality Headsets */
EDID_QUIRK('A', 'C', 'R', 0x7fce, EDID_QUIRK_NON_DESKTOP),
- EDID_QUIRK('H', 'P', 'N', 0x3515, EDID_QUIRK_NON_DESKTOP),
EDID_QUIRK('L', 'E', 'N', 0x0408, EDID_QUIRK_NON_DESKTOP),
- EDID_QUIRK('L', 'E', 'N', 0xb800, EDID_QUIRK_NON_DESKTOP),
EDID_QUIRK('F', 'U', 'J', 0x1970, EDID_QUIRK_NON_DESKTOP),
EDID_QUIRK('D', 'E', 'L', 0x7fce, EDID_QUIRK_NON_DESKTOP),
EDID_QUIRK('S', 'E', 'C', 0x144a, EDID_QUIRK_NON_DESKTOP),
@@ -3776,7 +3776,7 @@ static int do_y420vdb_modes(struct drm_connector *connector,
}
if (modes > 0)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB420;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR420;
return modes;
}
@@ -4222,6 +4222,17 @@ static bool cea_db_is_hdmi_forum_vsdb(const u8 *db)
return oui(db[3], db[2], db[1]) == HDMI_FORUM_IEEE_OUI;
}
+static bool cea_db_is_microsoft_vsdb(const u8 *db)
+{
+ if (cea_db_tag(db) != VENDOR_BLOCK)
+ return false;
+
+ if (cea_db_payload_len(db) != 21)
+ return false;
+
+ return oui(db[3], db[2], db[1]) == MICROSOFT_IEEE_OUI;
+}
+
static bool cea_db_is_vcdb(const u8 *db)
{
if (cea_db_tag(db) != USE_EXTENDED_TAG)
@@ -4279,7 +4290,7 @@ static void drm_parse_y420cmdb_bitmap(struct drm_connector *connector,
if (map_len == 0) {
/* All CEA modes support ycbcr420 sampling also.*/
hdmi->y420_cmdb_map = U64_MAX;
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB420;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR420;
return;
}
@@ -4302,7 +4313,7 @@ static void drm_parse_y420cmdb_bitmap(struct drm_connector *connector,
map |= (u64)db[2 + count] << (8 * count);
if (map)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB420;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR420;
hdmi->y420_cmdb_map = map;
}
@@ -5075,21 +5086,21 @@ static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
if (hdmi[6] & DRM_EDID_HDMI_DC_30) {
dc_bpc = 10;
- info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_30;
+ info->edid_hdmi_rgb444_dc_modes |= DRM_EDID_HDMI_DC_30;
DRM_DEBUG("%s: HDMI sink does deep color 30.\n",
connector->name);
}
if (hdmi[6] & DRM_EDID_HDMI_DC_36) {
dc_bpc = 12;
- info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_36;
+ info->edid_hdmi_rgb444_dc_modes |= DRM_EDID_HDMI_DC_36;
DRM_DEBUG("%s: HDMI sink does deep color 36.\n",
connector->name);
}
if (hdmi[6] & DRM_EDID_HDMI_DC_48) {
dc_bpc = 16;
- info->edid_hdmi_dc_modes |= DRM_EDID_HDMI_DC_48;
+ info->edid_hdmi_rgb444_dc_modes |= DRM_EDID_HDMI_DC_48;
DRM_DEBUG("%s: HDMI sink does deep color 48.\n",
connector->name);
}
@@ -5104,16 +5115,9 @@ static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
connector->name, dc_bpc);
info->bpc = dc_bpc;
- /*
- * Deep color support mandates RGB444 support for all video
- * modes and forbids YCRCB422 support for all video modes per
- * HDMI 1.3 spec.
- */
- info->color_formats = DRM_COLOR_FORMAT_RGB444;
-
/* YCRCB444 is optional according to spec. */
if (hdmi[6] & DRM_EDID_HDMI_DC_Y444) {
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
+ info->edid_hdmi_ycbcr444_dc_modes = info->edid_hdmi_rgb444_dc_modes;
DRM_DEBUG("%s: HDMI sink does YCRCB444 in deep color.\n",
connector->name);
}
@@ -5149,6 +5153,25 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db)
drm_parse_hdmi_deep_color_info(connector, db);
}
+/*
+ * See EDID extension for head-mounted and specialized monitors, specified at:
+ * https://docs.microsoft.com/en-us/windows-hardware/drivers/display/specialized-monitors-edid-extension
+ */
+static void drm_parse_microsoft_vsdb(struct drm_connector *connector,
+ const u8 *db)
+{
+ struct drm_display_info *info = &connector->display_info;
+ u8 version = db[4];
+ bool desktop_usage = db[5] & BIT(6);
+
+ /* Version 1 and 2 for HMDs, version 3 flags desktop usage explicitly */
+ if (version == 1 || version == 2 || (version == 3 && !desktop_usage))
+ info->non_desktop = true;
+
+ drm_dbg_kms(connector->dev, "HMD or specialized display VSDB version %u: 0x%02x\n",
+ version, db[5]);
+}
+
static void drm_parse_cea_ext(struct drm_connector *connector,
const struct edid *edid)
{
@@ -5165,9 +5188,9 @@ static void drm_parse_cea_ext(struct drm_connector *connector,
/* The existence of a CEA block should imply RGB support */
info->color_formats = DRM_COLOR_FORMAT_RGB444;
if (edid_ext[3] & EDID_CEA_YCRCB444)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR444;
if (edid_ext[3] & EDID_CEA_YCRCB422)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR422;
if (cea_db_offsets(edid_ext, &start, &end))
return;
@@ -5179,6 +5202,8 @@ static void drm_parse_cea_ext(struct drm_connector *connector,
drm_parse_hdmi_vsdb_video(connector, db);
if (cea_db_is_hdmi_forum_vsdb(db))
drm_parse_hdmi_forum_vsdb(connector, db);
+ if (cea_db_is_microsoft_vsdb(db))
+ drm_parse_microsoft_vsdb(connector, db);
if (cea_db_is_y420cmdb(db))
drm_parse_y420cmdb_bitmap(connector, db);
if (cea_db_is_vcdb(db))
@@ -5315,6 +5340,9 @@ drm_reset_display_info(struct drm_connector *connector)
info->rgb_quant_range_selectable = false;
memset(&info->hdmi, 0, sizeof(info->hdmi));
+ info->edid_hdmi_rgb444_dc_modes = 0;
+ info->edid_hdmi_ycbcr444_dc_modes = 0;
+
info->non_desktop = 0;
memset(&info->monitor_range, 0, sizeof(info->monitor_range));
@@ -5333,18 +5361,15 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
info->width_mm = edid->width_cm * 10;
info->height_mm = edid->height_cm * 10;
- info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP);
-
drm_get_monitor_range(connector, edid);
- DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop);
-
if (edid->revision < 3)
- return quirks;
+ goto out;
if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
- return quirks;
+ goto out;
+ info->color_formats |= DRM_COLOR_FORMAT_RGB444;
drm_parse_cea_ext(connector, edid);
/*
@@ -5363,7 +5388,7 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
/* Only defined for 1.4 with digital displays */
if (edid->revision < 4)
- return quirks;
+ goto out;
switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
case DRM_EDID_DIGITAL_DEPTH_6:
@@ -5393,19 +5418,26 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
DRM_DEBUG("%s: Assigning EDID-1.4 digital sink color depth as %d bpc.\n",
connector->name, info->bpc);
- info->color_formats |= DRM_COLOR_FORMAT_RGB444;
if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB444;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR444;
if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)
- info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
+ info->color_formats |= DRM_COLOR_FORMAT_YCBCR422;
drm_update_mso(connector, edid);
+out:
+ if (quirks & EDID_QUIRK_NON_DESKTOP) {
+ drm_dbg_kms(connector->dev, "Non-desktop display%s\n",
+ info->non_desktop ? " (redundant quirk)" : "");
+ info->non_desktop = true;
+ }
+
return quirks;
}
static struct drm_display_mode *drm_mode_displayid_detailed(struct drm_device *dev,
- struct displayid_detailed_timings_1 *timings)
+ struct displayid_detailed_timings_1 *timings,
+ bool type_7)
{
struct drm_display_mode *mode;
unsigned pixel_clock = (timings->pixel_clock[0] |
@@ -5426,7 +5458,8 @@ static struct drm_display_mode *drm_mode_displayid_detailed(struct drm_device *d
if (!mode)
return NULL;
- mode->clock = pixel_clock * 10;
+ /* resolution is kHz for type VII, and 10 kHz for type I */
+ mode->clock = type_7 ? pixel_clock : pixel_clock * 10;
mode->hdisplay = hactive;
mode->hsync_start = mode->hdisplay + hsync;
mode->hsync_end = mode->hsync_start + hsync_width;
@@ -5457,6 +5490,7 @@ static int add_displayid_detailed_1_modes(struct drm_connector *connector,
int num_timings;
struct drm_display_mode *newmode;
int num_modes = 0;
+ bool type_7 = block->tag == DATA_BLOCK_2_TYPE_7_DETAILED_TIMING;
/* blocks must be multiple of 20 bytes length */
if (block->num_bytes % 20)
return 0;
@@ -5465,7 +5499,7 @@ static int add_displayid_detailed_1_modes(struct drm_connector *connector,
for (i = 0; i < num_timings; i++) {
struct displayid_detailed_timings_1 *timings = &det->timings[i];
- newmode = drm_mode_displayid_detailed(connector->dev, timings);
+ newmode = drm_mode_displayid_detailed(connector->dev, timings, type_7);
if (!newmode)
continue;
@@ -5484,7 +5518,8 @@ static int add_displayid_detailed_modes(struct drm_connector *connector,
displayid_iter_edid_begin(edid, &iter);
displayid_iter_for_each(block, &iter) {
- if (block->tag == DATA_BLOCK_TYPE_1_DETAILED_TIMING)
+ if (block->tag == DATA_BLOCK_TYPE_1_DETAILED_TIMING ||
+ block->tag == DATA_BLOCK_2_TYPE_7_DETAILED_TIMING)
num_modes += add_displayid_detailed_1_modes(connector, block);
}
displayid_iter_end(&iter);
@@ -5652,7 +5687,7 @@ static bool is_hdmi2_sink(const struct drm_connector *connector)
return true;
return connector->display_info.hdmi.scdc.supported ||
- connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB420;
+ connector->display_info.color_formats & DRM_COLOR_FORMAT_YCBCR420;
}
static inline bool is_eotf_supported(u8 output_eotf, u8 sink_eotf)
@@ -5891,13 +5926,13 @@ static const u32 hdmi_colorimetry_val[] = {
#undef ACE
/**
- * drm_hdmi_avi_infoframe_colorspace() - fill the HDMI AVI infoframe
- * colorspace information
+ * drm_hdmi_avi_infoframe_colorimetry() - fill the HDMI AVI infoframe
+ * colorimetry information
* @frame: HDMI AVI infoframe
* @conn_state: connector state
*/
void
-drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
+drm_hdmi_avi_infoframe_colorimetry(struct hdmi_avi_infoframe *frame,
const struct drm_connector_state *conn_state)
{
u32 colorimetry_val;
@@ -5916,7 +5951,7 @@ drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
frame->extended_colorimetry = (colorimetry_val >> 2) &
EXTENDED_COLORIMETRY_MASK;
}
-EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorspace);
+EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorimetry);
/**
* drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.