diff mbox series

[v2,1/5] v4l: Add Qualcomm custom compressed pixel formats

Message ID 20210706124034.773503-2-stanimir.varbanov@linaro.org
State New
Headers show
Series Qualcomm custom compressed pixfmt | expand

Commit Message

Stanimir Varbanov July 6, 2021, 12:40 p.m. UTC 
Add custom Qualcomm raw compressed pixel formats. They are
used in Qualcomm SoCs to optimize the interconnect bandwidth.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
 .../media/v4l/pixfmt-reserved.rst              | 18 ++++++++++++++++++
 drivers/media/v4l2-core/v4l2-ioctl.c           |  2 ++
 include/uapi/linux/videodev2.h                 |  2 ++
 3 files changed, 22 insertions(+)

Comments

Hans Verkuil July 28, 2021, 10:09 a.m. UTC | #1 
On 06/07/2021 14:40, Stanimir Varbanov wrote:
> Add custom Qualcomm raw compressed pixel formats. They are

> used in Qualcomm SoCs to optimize the interconnect bandwidth.

> 

> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

> ---

>  .../media/v4l/pixfmt-reserved.rst              | 18 ++++++++++++++++++

>  drivers/media/v4l2-core/v4l2-ioctl.c           |  2 ++

>  include/uapi/linux/videodev2.h                 |  2 ++

>  3 files changed, 22 insertions(+)

> 

> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

> index 0b879c0da713..136e9832db0c 100644

> --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

> +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

> @@ -260,6 +260,24 @@ please make a proposal on the linux-media mailing list.

>  	of tiles, resulting in 32-aligned resolutions for the luminance plane

>  	and 16-aligned resolutions for the chrominance plane (with 2x2

>  	subsampling).

> +    * .. _V4L2-PIX-FMT-QC08C:

> +

> +      - ``V4L2_PIX_FMT_QC08C``

> +      - 'QC08C'

> +      - Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.

> +	The used compression is lossless and it is used by various multimedia

> +	hardware blocks like GPU, display controllers, ISP and video accelerators.

> +	It contains four planes for progressive video and eight planes for

> +	interlaced video.

> +    * .. _V4L2-PIX-FMT-QC10C:

> +

> +      - ``V4L2_PIX_FMT_QC10C``

> +      - 'QC10C'

> +      - Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.

> +	The used compression is lossless and it is used by various multimedia

> +	hardware blocks like GPU, display controllers, ISP and video.

> +	It contains four planes for progressive video and eight planes for

> +	interlaced video.


These two formats are opaque formats? Or is it something that userspace can
decode as well with the help of a datasheet or something similar?

If it is opaque (as I expect it is), then please add the phrase:
'It is an opaque intermediate format.'

Regards,

	Hans

>  

>  .. raw:: latex

>  

> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c

> index 05d5db3d85e5..76d4e4ac18e8 100644

> --- a/drivers/media/v4l2-core/v4l2-ioctl.c

> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c

> @@ -1416,6 +1416,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)

>  		case V4L2_PIX_FMT_S5C_UYVY_JPG:	descr = "S5C73MX interleaved UYVY/JPEG"; break;

>  		case V4L2_PIX_FMT_MT21C:	descr = "Mediatek Compressed Format"; break;

>  		case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;

> +		case V4L2_PIX_FMT_QC08C:	descr = "QCOM Compressed 8-bit Format"; break;

> +		case V4L2_PIX_FMT_QC10C:	descr = "QCOM Compressed 10-bit Format"; break;

>  		default:

>  			if (fmt->description[0])

>  				return;

> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h

> index 9260791b8438..dc1b714ccf6b 100644

> --- a/include/uapi/linux/videodev2.h

> +++ b/include/uapi/linux/videodev2.h

> @@ -737,6 +737,8 @@ struct v4l2_pix_format {

>  #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */

>  #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */

>  #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */

> +#define V4L2_PIX_FMT_QC08C    v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */

> +#define V4L2_PIX_FMT_QC10C    v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */

>  

>  /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */

>  #define V4L2_PIX_FMT_IPU3_SBGGR10	v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */

>
Hans Verkuil July 28, 2021, 10:10 a.m. UTC | #2 
On 28/07/2021 12:09, Hans Verkuil wrote:
> On 06/07/2021 14:40, Stanimir Varbanov wrote:

>> Add custom Qualcomm raw compressed pixel formats. They are

>> used in Qualcomm SoCs to optimize the interconnect bandwidth.

>>

>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

>> ---

>>  .../media/v4l/pixfmt-reserved.rst              | 18 ++++++++++++++++++

>>  drivers/media/v4l2-core/v4l2-ioctl.c           |  2 ++

>>  include/uapi/linux/videodev2.h                 |  2 ++

>>  3 files changed, 22 insertions(+)

>>

>> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

>> index 0b879c0da713..136e9832db0c 100644

>> --- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

>> +++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst

>> @@ -260,6 +260,24 @@ please make a proposal on the linux-media mailing list.

>>  	of tiles, resulting in 32-aligned resolutions for the luminance plane

>>  	and 16-aligned resolutions for the chrominance plane (with 2x2

>>  	subsampling).

>> +    * .. _V4L2-PIX-FMT-QC08C:

>> +

>> +      - ``V4L2_PIX_FMT_QC08C``

>> +      - 'QC08C'

>> +      - Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.

>> +	The used compression is lossless and it is used by various multimedia

>> +	hardware blocks like GPU, display controllers, ISP and video accelerators.

>> +	It contains four planes for progressive video and eight planes for

>> +	interlaced video.

>> +    * .. _V4L2-PIX-FMT-QC10C:

>> +

>> +      - ``V4L2_PIX_FMT_QC10C``

>> +      - 'QC10C'

>> +      - Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.

>> +	The used compression is lossless and it is used by various multimedia

>> +	hardware blocks like GPU, display controllers, ISP and video.

>> +	It contains four planes for progressive video and eight planes for

>> +	interlaced video.

> 

> These two formats are opaque formats? Or is it something that userspace can

> decode as well with the help of a datasheet or something similar?

> 

> If it is opaque (as I expect it is), then please add the phrase:

> 'It is an opaque intermediate format.'


If it is not an opaque format, then add a reference to QCom documentation that
describes it (even if it is only available under NDA).

Regards,

	Hans

> 

> Regards,

> 

> 	Hans

> 

>>  

>>  .. raw:: latex

>>  

>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c

>> index 05d5db3d85e5..76d4e4ac18e8 100644

>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c

>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c

>> @@ -1416,6 +1416,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)

>>  		case V4L2_PIX_FMT_S5C_UYVY_JPG:	descr = "S5C73MX interleaved UYVY/JPEG"; break;

>>  		case V4L2_PIX_FMT_MT21C:	descr = "Mediatek Compressed Format"; break;

>>  		case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;

>> +		case V4L2_PIX_FMT_QC08C:	descr = "QCOM Compressed 8-bit Format"; break;

>> +		case V4L2_PIX_FMT_QC10C:	descr = "QCOM Compressed 10-bit Format"; break;

>>  		default:

>>  			if (fmt->description[0])

>>  				return;

>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h

>> index 9260791b8438..dc1b714ccf6b 100644

>> --- a/include/uapi/linux/videodev2.h

>> +++ b/include/uapi/linux/videodev2.h

>> @@ -737,6 +737,8 @@ struct v4l2_pix_format {

>>  #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */

>>  #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */

>>  #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */

>> +#define V4L2_PIX_FMT_QC08C    v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */

>> +#define V4L2_PIX_FMT_QC10C    v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */

>>  

>>  /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */

>>  #define V4L2_PIX_FMT_IPU3_SBGGR10	v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */

>>

>
diff mbox series

Patch

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
index 0b879c0da713..136e9832db0c 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
@@ -260,6 +260,24 @@  please make a proposal on the linux-media mailing list.
 	of tiles, resulting in 32-aligned resolutions for the luminance plane
 	and 16-aligned resolutions for the chrominance plane (with 2x2
 	subsampling).
+    * .. _V4L2-PIX-FMT-QC08C:
+
+      - ``V4L2_PIX_FMT_QC08C``
+      - 'QC08C'
+      - Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.
+	The used compression is lossless and it is used by various multimedia
+	hardware blocks like GPU, display controllers, ISP and video accelerators.
+	It contains four planes for progressive video and eight planes for
+	interlaced video.
+    * .. _V4L2-PIX-FMT-QC10C:
+
+      - ``V4L2_PIX_FMT_QC10C``
+      - 'QC10C'
+      - Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.
+	The used compression is lossless and it is used by various multimedia
+	hardware blocks like GPU, display controllers, ISP and video.
+	It contains four planes for progressive video and eight planes for
+	interlaced video.
 
 .. raw:: latex
 
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 05d5db3d85e5..76d4e4ac18e8 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1416,6 +1416,8 @@  static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 		case V4L2_PIX_FMT_S5C_UYVY_JPG:	descr = "S5C73MX interleaved UYVY/JPEG"; break;
 		case V4L2_PIX_FMT_MT21C:	descr = "Mediatek Compressed Format"; break;
 		case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
+		case V4L2_PIX_FMT_QC08C:	descr = "QCOM Compressed 8-bit Format"; break;
+		case V4L2_PIX_FMT_QC10C:	descr = "QCOM Compressed 10-bit Format"; break;
 		default:
 			if (fmt->description[0])
 				return;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 9260791b8438..dc1b714ccf6b 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -737,6 +737,8 @@  struct v4l2_pix_format {
 #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */
 #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
 #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
+#define V4L2_PIX_FMT_QC08C    v4l2_fourcc('Q', '0', '8', 'C') /* Qualcomm 8-bit compressed */
+#define V4L2_PIX_FMT_QC10C    v4l2_fourcc('Q', '1', '0', 'C') /* Qualcomm 10-bit compressed */
 
 /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
 #define V4L2_PIX_FMT_IPU3_SBGGR10	v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */