| Message ID | 1580168406-23808-1-git-send-email-abhinavk@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] drm: Parse Colorimetry data block from EDID | expand |
Hi Steven Any further comments on this change? Thanks Abhinav On 2020-01-27 15:40, Abhinav Kumar wrote: > From: Uma Shankar <uma.shankar@intel.com> > > CEA 861.3 spec adds colorimetry data block for HDMI. > Parsing the block to get the colorimetry data from > panel. > > This was posted by Uma Shankar at > https://patchwork.kernel.org/patch/10861327/ > > Modified by Abhinav Kumar: > - Use macros to distinguish the bit fields for clarity > > Changes in v2: > - Use the drm_edid.h macros in drm_edid.c (Stephen Boyd) > > Signed-off-by: Uma Shankar <uma.shankar@intel.com> > Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org> > --- > drivers/gpu/drm/drm_edid.c | 45 > +++++++++++++++++++++++++++++++++++++++++++++ > include/drm/drm_connector.h | 3 +++ > include/drm/drm_edid.h | 14 ++++++++++++++ > 3 files changed, 62 insertions(+) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index 99769d6..9a82fb8 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -3136,6 +3136,7 @@ static int drm_cvt_modes(struct drm_connector > *connector, > #define VIDEO_BLOCK 0x02 > #define VENDOR_BLOCK 0x03 > #define SPEAKER_BLOCK 0x04 > +#define COLORIMETRY_DATA_BLOCK 0x5 > #define HDR_STATIC_METADATA_BLOCK 0x6 > #define USE_EXTENDED_TAG 0x07 > #define EXT_VIDEO_CAPABILITY_BLOCK 0x00 > @@ -4199,6 +4200,48 @@ static void > fixup_detailed_cea_mode_clock(struct drm_display_mode *mode) > mode->clock = clock; > } > > +static bool cea_db_is_hdmi_colorimetry_data_block(const u8 *db) > +{ > + if (cea_db_tag(db) != USE_EXTENDED_TAG) > + return false; > + > + if (db[1] != COLORIMETRY_DATA_BLOCK) > + return false; > + > + if (cea_db_payload_len(db) < 2) > + return false; > + > + return true; > +} > + > +static void > +drm_parse_colorimetry_data_block(struct drm_connector *connector, > const u8 *db) > +{ > + struct drm_hdmi_info *info = &connector->display_info.hdmi; > + > + if (db[2] & DRM_EDID_CLRMETRY_xvYCC_601) > + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_601; > + if (db[2] & DRM_EDID_CLRMETRY_xvYCC_709) > + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_709; > + if (db[2] & DRM_EDID_CLRMETRY_sYCC_601) > + info->colorimetry |= DRM_EDID_CLRMETRY_sYCC_601; > + if (db[2] & DRM_EDID_CLRMETRY_ADBYCC_601) > + info->colorimetry |= DRM_EDID_CLRMETRY_ADBYCC_601; > + if (db[2] & DRM_EDID_CLRMETRY_ADB_RGB) > + info->colorimetry |= DRM_EDID_CLRMETRY_ADB_RGB; > + if (db[2] & DRM_EDID_CLRMETRY_BT2020_CYCC) > + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_CYCC; > + if (db[2] & DRM_EDID_CLRMETRY_BT2020_YCC) > + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_YCC; > + if (db[2] & DRM_EDID_CLRMETRY_BT2020_RGB) > + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_RGB; > + /* Byte 4 Bit 7: DCI-P3 */ > + if (db[3] & BIT(7)) > + info->colorimetry |= DRM_EDID_CLRMETRY_DCI_P3; > + > + DRM_DEBUG_KMS("Supported Colorimetry 0x%x\n", info->colorimetry); > +} > + > static bool cea_db_is_hdmi_hdr_metadata_block(const u8 *db) > { > if (cea_db_tag(db) != USE_EXTENDED_TAG) > @@ -4877,6 +4920,8 @@ static void drm_parse_cea_ext(struct > drm_connector *connector, > drm_parse_vcdb(connector, db); > if (cea_db_is_hdmi_hdr_metadata_block(db)) > drm_parse_hdr_metadata_block(connector, db); > + if (cea_db_is_hdmi_colorimetry_data_block(db)) > + drm_parse_colorimetry_data_block(connector, db); > } > } > > diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h > index 2219109..a996ee3 100644 > --- a/include/drm/drm_connector.h > +++ b/include/drm/drm_connector.h > @@ -207,6 +207,9 @@ struct drm_hdmi_info { > > /** @y420_dc_modes: bitmap of deep color support index */ > u8 y420_dc_modes; > + > + /* @colorimetry: bitmap of supported colorimetry modes */ > + u16 colorimetry; > }; > > /** > diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h > index f0b03d4..4f22f22 100644 > --- a/include/drm/drm_edid.h > +++ b/include/drm/drm_edid.h > @@ -224,6 +224,20 @@ struct detailed_timing { > DRM_EDID_YCBCR420_DC_36 | \ > DRM_EDID_YCBCR420_DC_30) > > +/* > + * Supported Colorimetry from colorimetry data block > + * as per CEA 861-G spec > + */ > +#define DRM_EDID_CLRMETRY_xvYCC_601 (1 << 0) > +#define DRM_EDID_CLRMETRY_xvYCC_709 (1 << 1) > +#define DRM_EDID_CLRMETRY_sYCC_601 (1 << 2) > +#define DRM_EDID_CLRMETRY_ADBYCC_601 (1 << 3) > +#define DRM_EDID_CLRMETRY_ADB_RGB (1 << 4) > +#define DRM_EDID_CLRMETRY_BT2020_CYCC (1 << 5) > +#define DRM_EDID_CLRMETRY_BT2020_YCC (1 << 6) > +#define DRM_EDID_CLRMETRY_BT2020_RGB (1 << 7) > +#define DRM_EDID_CLRMETRY_DCI_P3 (1 << 15) > + > /* ELD Header Block */ > #define DRM_ELD_HEADER_BLOCK_SIZE 4
Quoting abhinavk@codeaurora.org (2020-01-31 13:01:38) > Hi Steven > > Any further comments on this change? > No. I was more of a drive by review comment on the previous patch.
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 99769d6..9a82fb8 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3136,6 +3136,7 @@ static int drm_cvt_modes(struct drm_connector *connector, #define VIDEO_BLOCK 0x02 #define VENDOR_BLOCK 0x03 #define SPEAKER_BLOCK 0x04 +#define COLORIMETRY_DATA_BLOCK 0x5 #define HDR_STATIC_METADATA_BLOCK 0x6 #define USE_EXTENDED_TAG 0x07 #define EXT_VIDEO_CAPABILITY_BLOCK 0x00 @@ -4199,6 +4200,48 @@ static void fixup_detailed_cea_mode_clock(struct drm_display_mode *mode) mode->clock = clock; } +static bool cea_db_is_hdmi_colorimetry_data_block(const u8 *db) +{ + if (cea_db_tag(db) != USE_EXTENDED_TAG) + return false; + + if (db[1] != COLORIMETRY_DATA_BLOCK) + return false; + + if (cea_db_payload_len(db) < 2) + return false; + + return true; +} + +static void +drm_parse_colorimetry_data_block(struct drm_connector *connector, const u8 *db) +{ + struct drm_hdmi_info *info = &connector->display_info.hdmi; + + if (db[2] & DRM_EDID_CLRMETRY_xvYCC_601) + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_601; + if (db[2] & DRM_EDID_CLRMETRY_xvYCC_709) + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_709; + if (db[2] & DRM_EDID_CLRMETRY_sYCC_601) + info->colorimetry |= DRM_EDID_CLRMETRY_sYCC_601; + if (db[2] & DRM_EDID_CLRMETRY_ADBYCC_601) + info->colorimetry |= DRM_EDID_CLRMETRY_ADBYCC_601; + if (db[2] & DRM_EDID_CLRMETRY_ADB_RGB) + info->colorimetry |= DRM_EDID_CLRMETRY_ADB_RGB; + if (db[2] & DRM_EDID_CLRMETRY_BT2020_CYCC) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_CYCC; + if (db[2] & DRM_EDID_CLRMETRY_BT2020_YCC) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_YCC; + if (db[2] & DRM_EDID_CLRMETRY_BT2020_RGB) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_RGB; + /* Byte 4 Bit 7: DCI-P3 */ + if (db[3] & BIT(7)) + info->colorimetry |= DRM_EDID_CLRMETRY_DCI_P3; + + DRM_DEBUG_KMS("Supported Colorimetry 0x%x\n", info->colorimetry); +} + static bool cea_db_is_hdmi_hdr_metadata_block(const u8 *db) { if (cea_db_tag(db) != USE_EXTENDED_TAG) @@ -4877,6 +4920,8 @@ static void drm_parse_cea_ext(struct drm_connector *connector, drm_parse_vcdb(connector, db); if (cea_db_is_hdmi_hdr_metadata_block(db)) drm_parse_hdr_metadata_block(connector, db); + if (cea_db_is_hdmi_colorimetry_data_block(db)) + drm_parse_colorimetry_data_block(connector, db); } } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 2219109..a996ee3 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -207,6 +207,9 @@ struct drm_hdmi_info { /** @y420_dc_modes: bitmap of deep color support index */ u8 y420_dc_modes; + + /* @colorimetry: bitmap of supported colorimetry modes */ + u16 colorimetry; }; /** diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index f0b03d4..4f22f22 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -224,6 +224,20 @@ struct detailed_timing { DRM_EDID_YCBCR420_DC_36 | \ DRM_EDID_YCBCR420_DC_30) +/* + * Supported Colorimetry from colorimetry data block + * as per CEA 861-G spec + */ +#define DRM_EDID_CLRMETRY_xvYCC_601 (1 << 0) +#define DRM_EDID_CLRMETRY_xvYCC_709 (1 << 1) +#define DRM_EDID_CLRMETRY_sYCC_601 (1 << 2) +#define DRM_EDID_CLRMETRY_ADBYCC_601 (1 << 3) +#define DRM_EDID_CLRMETRY_ADB_RGB (1 << 4) +#define DRM_EDID_CLRMETRY_BT2020_CYCC (1 << 5) +#define DRM_EDID_CLRMETRY_BT2020_YCC (1 << 6) +#define DRM_EDID_CLRMETRY_BT2020_RGB (1 << 7) +#define DRM_EDID_CLRMETRY_DCI_P3 (1 << 15) + /* ELD Header Block */ #define DRM_ELD_HEADER_BLOCK_SIZE 4