[PATCH v6 1/8] media: qcom: camss: Add V4L2 meta format for CAMSS ISP parameters

[Loic Poulain]

Add a V4L2 meta format code (V4L2_META_FMT_QCOM_ISP_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
ISP tuning data such as white balance, color correction and chroma
enhancement settings.

Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxxxxxxxx>
---
 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 17ba1ae707355a134047de646f61fcc2d1512d4c..cef1593c1835070f7b34a8b8c860738fb77f533a 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_META_FMT_RPPX1_PARAMS:	descr = "Dreamchip RPP-X1 ISP Parameters"; break;
 	case V4L2_META_FMT_RPPX1_STATS:	descr = "Dreamchip RPP-X1 ISP Statistics"; break;
 	case V4L2_PIX_FMT_NV12_8L128:	descr = "NV12 (8x128 Linear)"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 5373dba640fae3d19247ab1c74ba336e05dc0fe0..fce574d9268a019aa7829e8dbc06a6187cbc5c62 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -893,6 +893,9 @@ struct v4l2_pix_format {
 #define V4L2_META_FMT_RPPX1_PARAMS	v4l2_fourcc('D', 'R', '1', 'P') /* Dreamchip RPP-X1 Parameters */
 #define V4L2_META_FMT_RPPX1_STATS	v4l2_fourcc('D', 'R', '1', 'S') /* Dreamchip RPP-X1 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 */
+
 #ifdef __KERNEL__
 /*
  * Line-based metadata formats. Remember to update v4l_fill_fmtdesc() when

-- 
2.34.1