[PATCH v3 07/15] media: qcom: camss: Add V4L2 meta format for CAMSS ISP parameters

[Loic Poulain <loic.poulain@oss.qualcomm.com>]

Add a V4L2 meta format code (V4L2_META_FMT_QCOM_CAMSS_PARAMS) for the
Qualcomm CAMSS ISP parameter buffer. This format is used by the params
video node exposed by CAMSS offline ISP drivers (e.g. OPE) to carry
per-frame ISP tuning data such as white balance, color correction and
chroma enhancement settings.

Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
 include/uapi/linux/videodev2.h       | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 98512ea4cc5b9d725e1851af2ed38df85bb4fa8c..7b6e9a9a514f037190d55d59409dd6cc97522943 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1471,6 +1471,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_META_FMT_C3ISP_STATS:		descr = "Amlogic C3 ISP Statistics"; break;
 	case V4L2_META_FMT_MALI_C55_PARAMS:	descr = "ARM Mali-C55 ISP Parameters"; break;
 	case V4L2_META_FMT_MALI_C55_STATS:	descr = "ARM Mali-C55 ISP 3A Statistics"; break;
+	case V4L2_META_FMT_QCOM_ISP_PARAMS:	descr = "Qualcomm CAMSS ISP Parameters"; break;
 	case V4L2_PIX_FMT_NV12_8L128:	descr = "NV12 (8x128 Linear)"; break;
 	case V4L2_PIX_FMT_NV12M_8L128:	descr = "NV12M (8x128 Linear)"; break;
 	case V4L2_PIX_FMT_NV12_10BE_8L128:	descr = "10-bit NV12 (8x128 Linear, BE)"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index add08188f06890182a5c399a223c1ab0a546cae1..f861211ebd7aefbcf4096885388069efed27ddc3 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -888,6 +888,9 @@ struct v4l2_pix_format {
 #define V4L2_META_FMT_MALI_C55_PARAMS	v4l2_fourcc('C', '5', '5', 'P') /* ARM Mali-C55 Parameters */
 #define V4L2_META_FMT_MALI_C55_STATS	v4l2_fourcc('C', '5', '5', 'S') /* ARM Mali-C55 3A Statistics */
 
+/* Vendor specific - used for Qualcomm CAMSS offline ISP */
+#define V4L2_META_FMT_QCOM_ISP_PARAMS	v4l2_fourcc('Q', 'C', 'I', 'P') /* Qualcomm CAMSS ISP Parameters */
+
 #ifdef __KERNEL__
 /*
  * Line-based metadata formats. Remember to update v4l_fill_fmtdesc() when

-- 
2.34.1