diff options
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 6bb6337be920..5dfe14763871 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -82,6 +82,8 @@ #define EDID_QUIRK_FORCE_6BPC (1 << 10) /* Force 10bpc */ #define EDID_QUIRK_FORCE_10BPC (1 << 11) +/* Non desktop display (i.e. HMD) */ +#define EDID_QUIRK_NON_DESKTOP (1 << 12) struct detailed_mode_closure { struct drm_connector *connector; @@ -157,6 +159,9 @@ static const struct edid_quirk { /* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/ { "ETR", 13896, EDID_QUIRK_FORCE_8BPC }, + + /* HTC Vive VR Headset */ + { "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP }, }; /* @@ -1533,6 +1538,10 @@ static void connector_bad_edid(struct drm_connector *connector, * level, drivers must make all reasonable efforts to expose it as an I2C * adapter and use drm_get_edid() instead of abusing this function. * + * The EDID may be overridden using debugfs override_edid or firmare EDID + * (drm_load_edid_firmware() and drm.edid_firmware parameter), in this priority + * order. Having either of them bypasses actual EDID reads. + * * Return: Pointer to valid EDID or NULL if we couldn't find any. */ struct edid *drm_do_get_edid(struct drm_connector *connector, @@ -1542,6 +1551,17 @@ struct edid *drm_do_get_edid(struct drm_connector *connector, { int i, j = 0, valid_extensions = 0; u8 *edid, *new; + struct edid *override = NULL; + + if (connector->override_edid) + override = drm_edid_duplicate((const struct edid *) + connector->edid_blob_ptr->data); + + if (!override) + override = drm_load_edid_firmware(connector); + + if (!IS_ERR_OR_NULL(override)) + return override; if ((edid = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) return NULL; @@ -4378,7 +4398,7 @@ static void drm_parse_cea_ext(struct drm_connector *connector, } static void drm_add_display_info(struct drm_connector *connector, - struct edid *edid) + struct edid *edid, u32 quirks) { struct drm_display_info *info = &connector->display_info; @@ -4392,6 +4412,8 @@ static void drm_add_display_info(struct drm_connector *connector, info->max_tmds_clock = 0; info->dvi_dual = false; + info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP); + if (edid->revision < 3) return; @@ -4612,7 +4634,7 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid) * To avoid multiple parsing of same block, lets parse that map * from sink info, before parsing CEA modes. */ - drm_add_display_info(connector, edid); + drm_add_display_info(connector, edid, quirks); /* * EDID spec says modes should be preferred in this order: @@ -4809,7 +4831,8 @@ void drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, const struct drm_display_mode *mode, enum hdmi_quantization_range rgb_quant_range, - bool rgb_quant_range_selectable) + bool rgb_quant_range_selectable, + bool is_hdmi2_sink) { /* * CEA-861: @@ -4833,8 +4856,15 @@ drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, * YQ-field to match the RGB Quantization Range being transmitted * (e.g., when Limited Range RGB, set YQ=0 or when Full Range RGB, * set YQ=1) and the Sink shall ignore the YQ-field." + * + * Unfortunate certain sinks (eg. VIZ Model 67/E261VA) get confused + * by non-zero YQ when receiving RGB. There doesn't seem to be any + * good way to tell which version of CEA-861 the sink supports, so + * we limit non-zero YQ to HDMI 2.0 sinks only as HDMI 2.0 is based + * on on CEA-861-F. */ - if (rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) + if (!is_hdmi2_sink || + rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) frame->ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED; else |