[Intel-gfx] [PATCH 07/20] drm/edid: parse ycbcr 420 deep color information

[Sharma, Shashank]

Regards

Shashank


On 7/12/2017 10:48 PM, Ville Syrjälä wrote:
> On Mon, Jul 10, 2017 at 04:48:35PM +0530, Shashank Sharma wrote:
>> CEA-861-F spec adds ycbcr420 deep color support information
>> in hf-vsdb block. This patch extends the existing hf-vsdb parsing
>> function by adding parsing of ycbcr420 deep color support from the
>> EDID and adding it into display information stored.
>>
>> V2: Rebase
>> V3: Rebase
>> V4: Moved definition of y420_dc_modes into this patch, where its used
>>      (Ville)
>> V5: Optimize function, if(conditions) not reqd (Ville)
>> V6: Rebase
>>
>> Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
>> ---
>>   drivers/gpu/drm/drm_edid.c  | 12 ++++++++++++
>>   include/drm/drm_connector.h |  3 +++
>>   include/drm/drm_edid.h      |  8 ++++++++
>>   3 files changed, 23 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
>> index 44be128..944a28f 100644
>> --- a/drivers/gpu/drm/drm_edid.c
>> +++ b/drivers/gpu/drm/drm_edid.c
>> @@ -4199,6 +4199,16 @@ drm_default_rgb_quant_range(const struct drm_display_mode *mode)
>>   }
>>   EXPORT_SYMBOL(drm_default_rgb_quant_range);
>>   
>> +static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector,
>> +					     const u8 *db)
>> +{
>> +	u8 dc_mask;
>> +	struct drm_hdmi_info *hdmi = &connector->display_info.hdmi;
>> +
>> +	dc_mask = db[7] & DRM_EDID_YCBCR420_DC_MASK;
>> +	hdmi->y420_dc_modes |= dc_mask;
>> +}
>> +
>>   static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector,
>>   				 const u8 *hf_vsdb)
>>   {
>> @@ -4239,6 +4249,8 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector,
>>   				scdc->scrambling.low_rates = true;
>>   		}
>>   	}
>> +
>> +	drm_parse_ycbcr420_deep_color_info(connector, hf_vsdb);
>>   }
>>   
>>   static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
>> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
>> index 225e092..4bc0882 100644
>> --- a/include/drm/drm_connector.h
>> +++ b/include/drm/drm_connector.h
>> @@ -154,6 +154,9 @@ struct drm_hdmi_info {
>>   
>>   	/** @y420_cmdb_map: bitmap of SVD index, to extraxt vcb modes */
>>   	u64 y420_cmdb_map;
>> +
>> +	/** @y420_dc_modes: bitmap of deep color support index */
>> +	u8 y420_dc_modes;
> Pls put it next to the other dc u8 stuff.
Ok.

- Shashank
>>   };
>>   
>>   /**
>> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
>> index b55b2a7..aa58146 100644
>> --- a/include/drm/drm_edid.h
>> +++ b/include/drm/drm_edid.h
>> @@ -213,6 +213,14 @@ struct detailed_timing {
>>   #define DRM_EDID_HDMI_DC_30               (1 << 4)
>>   #define DRM_EDID_HDMI_DC_Y444             (1 << 3)
>>   
>> +/* YCBCR 420 deep color modes */
>> +#define DRM_EDID_YCBCR420_DC_48		  (1 << 6)
>> +#define DRM_EDID_YCBCR420_DC_36		  (1 << 5)
>> +#define DRM_EDID_YCBCR420_DC_30		  (1 << 4)
>> +#define DRM_EDID_YCBCR420_DC_MASK (DRM_EDID_YCBCR420_DC_48 | \
>> +				    DRM_EDID_YCBCR420_DC_36 | \
>> +				    DRM_EDID_YCBCR420_DC_30)
>> +
>>   /* ELD Header Block */
>>   #define DRM_ELD_HEADER_BLOCK_SIZE	4
>>   
>> -- 
>> 2.7.4
>>
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