[PATCH v2 2/8] staging: media: starfive: Add bayer pad for ISP

[Changhuang Liang <changhuang.liang@starfivetech.com>]

Add bayer pad for ISP, it supported the output of the 12 bit per
pixel bayer format. It actually convert the 10 bit per pixel input
bayer format to the 12 bit per pixel format.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
---
 drivers/staging/media/starfive/camss/stf-isp.c | 18 +++++++++++++++---
 drivers/staging/media/starfive/camss/stf-isp.h |  1 +
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/media/starfive/camss/stf-isp.c b/drivers/staging/media/starfive/camss/stf-isp.c
index d961e06d9f7a..53b9cd2b49bd 100644
--- a/drivers/staging/media/starfive/camss/stf-isp.c
+++ b/drivers/staging/media/starfive/camss/stf-isp.c
@@ -29,6 +29,13 @@ static const struct stf_isp_format isp_formats_source[] = {
 	{ MEDIA_BUS_FMT_YUYV8_1_5X8, 8 },
 };
 
+static const struct stf_isp_format isp_formats_source_bayer[] = {
+	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGRBG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SGBRG12_1X12, 12 },
+	{ MEDIA_BUS_FMT_SBGGR12_1X12, 12 },
+};
+
 static const struct stf_isp_format isp_formats_source_scd[] = {
 	{ MEDIA_BUS_FMT_METADATA_FIXED },
 };
@@ -37,6 +44,7 @@ static const struct stf_isp_format_table isp_formats_st7110[] = {
 	{ isp_formats_sink, ARRAY_SIZE(isp_formats_sink) },
 	{ isp_formats_sink_params, ARRAY_SIZE(isp_formats_sink_params) },
 	{ isp_formats_source, ARRAY_SIZE(isp_formats_source) },
+	{ isp_formats_source_bayer, ARRAY_SIZE(isp_formats_source_bayer) },
 	{ isp_formats_source_scd, ARRAY_SIZE(isp_formats_source_scd) },
 };
 
@@ -311,8 +319,11 @@ static int isp_set_selection(struct v4l2_subdev *sd,
 		crop.target = V4L2_SEL_TGT_CROP;
 		crop.r = *rect;
 		isp_set_selection(sd, state, &crop);
+
+		crop.pad = STF_ISP_PAD_SRC_BAYER;
+		isp_set_selection(sd, state, &crop);
 	} else if (sel->target == V4L2_SEL_TGT_CROP &&
-		   sel->pad == STF_ISP_PAD_SRC) {
+		   (sel->pad == STF_ISP_PAD_SRC || sel->pad == STF_ISP_PAD_SRC_BAYER)) {
 		struct v4l2_subdev_format fmt = { 0 };
 
 		rect = v4l2_subdev_state_get_crop(state, sel->pad);
@@ -324,7 +335,7 @@ static int isp_set_selection(struct v4l2_subdev *sd,
 
 		/* Reset source pad format width and height */
 		fmt.which = sel->which;
-		fmt.pad = STF_ISP_PAD_SRC;
+		fmt.pad = sel->pad;
 		fmt.format.width = rect->width;
 		fmt.format.height = rect->height;
 		isp_set_format(sd, state, &fmt);
@@ -368,7 +379,7 @@ static int isp_init_formats(struct v4l2_subdev *sd,
 	};
 	int ret;
 
-	/* Init for STF_ISP_PAD_SINK and STF_ISP_PAD_SRC pad */
+	/* Init for STF_ISP_PAD_SINK, STF_ISP_PAD_SRC and STF_ISP_PAD_SRC_BAYER pad */
 	ret = isp_set_format(sd, sd_state, &format);
 	if (ret < 0)
 		return ret;
@@ -422,6 +433,7 @@ int stf_isp_register(struct stf_isp_dev *isp_dev, struct v4l2_device *v4l2_dev)
 	pads[STF_ISP_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
 	pads[STF_ISP_PAD_SINK_PARAMS].flags = MEDIA_PAD_FL_SINK;
 	pads[STF_ISP_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE;
+	pads[STF_ISP_PAD_SRC_BAYER].flags = MEDIA_PAD_FL_SOURCE;
 	pads[STF_ISP_PAD_SRC_SCD].flags = MEDIA_PAD_FL_SOURCE;
 
 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
diff --git a/drivers/staging/media/starfive/camss/stf-isp.h b/drivers/staging/media/starfive/camss/stf-isp.h
index 3eade22c669e..f63817b7a235 100644
--- a/drivers/staging/media/starfive/camss/stf-isp.h
+++ b/drivers/staging/media/starfive/camss/stf-isp.h
@@ -529,6 +529,7 @@ enum stf_isp_pad_id {
 	STF_ISP_PAD_SINK = 0,
 	STF_ISP_PAD_SINK_PARAMS,
 	STF_ISP_PAD_SRC,
+	STF_ISP_PAD_SRC_BAYER,
 	STF_ISP_PAD_SRC_SCD,
 	STF_ISP_PAD_MAX
 };
-- 
2.25.1