[PATCH v12 09/12] media: rkisp1: Add YC swap capability

Paul Elder
2024-02-16T09:56:04Z

The ISP version in the i.MX8MP has an MI_OUTPUT_ALIGN_FORMAT register
that the rk3399 does not have. This register allows swapping bytes,
which can be used to implement UYVY from YUYV.

Add a flag to the format info in the list of formats supported by the
capture v4l2 devices, and update enum_fmt and s_fmt to take it into
account.

To signify the presence of this feature, reuse the MAIN_STRIDE feature
flag, as it is very likely that any ISP version that supports one of
these two features will also support the other.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Tested-by: Adam Ford <aford173@gmail.com>

---
Changes in v12:
- replace MI_OUTPUT_ALIGN feature flag with MAIN_STRIDE
---
.../platform/rockchip/rkisp1/rkisp1-capture.c | 26 ++++++++++++++-----
1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
index 1ee7639c42b7..99375e08b503 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
@@ -47,13 +47,15 @@ enum rkisp1_plane {
* @fourcc: pixel format
* @fmt_type: helper filed for pixel format
* @uv_swap: if cb cr swapped, for yuv
+ * @yc_swap: if y and cb/cr swapped, for yuv
* @write_format: defines how YCbCr self picture data is written to memory
* @output_format: defines sp output format
* @mbus: the mbus code on the src resizer pad that matches the pixel format
*/
struct rkisp1_capture_fmt_cfg {
u32 fourcc;
- u8 uv_swap;
+ u32 uv_swap : 1;
+ u32 yc_swap : 1;
u32 write_format;
u32 output_format;
u32 mbus;
@@ -1162,10 +1164,14 @@ rkisp1_fill_pixfmt(const struct rkisp1_capture *cap,
static const struct rkisp1_capture_fmt_cfg *
rkisp1_find_fmt_cfg(const struct rkisp1_capture *cap, const u32 pixelfmt)
{
+ bool yc_swap_support = rkisp1_has_feature(cap->rkisp1, MAIN_STRIDE);
unsigned int i;

for (i = 0; i < cap->config->fmt_size; i++) {
- if (cap->config->fmts[i].fourcc == pixelfmt)
+ const struct rkisp1_capture_fmt_cfg *fmt = &cap->config->fmts[i];
+
+ if (fmt->fourcc == pixelfmt &&
+ (!fmt->yc_swap || yc_swap_support))
return &cap->config->fmts[i];
}
return NULL;
@@ -1234,23 +1240,29 @@ static int rkisp1_enum_fmt_vid_cap_mplane(struct file *file, void *priv,
{
struct rkisp1_capture *cap = video_drvdata(file);
const struct rkisp1_capture_fmt_cfg *fmt = NULL;
+ bool yc_swap_support = rkisp1_has_feature(cap->rkisp1, MAIN_STRIDE);
unsigned int i, n = 0;

- if (!f->mbus_code) {
- if (f->index >= cap->config->fmt_size)
- return -EINVAL;
+ if (f->index >= cap->config->fmt_size)
+ return -EINVAL;

+ if (!f->mbus_code && yc_swap_support) {
fmt = &cap->config->fmts[f->index];
f->pixelformat = fmt->fourcc;
return 0;
}

for (i = 0; i < cap->config->fmt_size; i++) {
- if (cap->config->fmts[i].mbus != f->mbus_code)
+ fmt = &cap->config->fmts[i];
+
+ if (f->mbus_code && fmt->mbus != f->mbus_code)
+ continue;
+
+ if (!yc_swap_support && fmt->yc_swap)
continue;

if (n++ == f->index) {
- f->pixelformat = cap->config->fmts[i].fourcc;
+ f->pixelformat = fmt->fourcc;
return 0;
}
}
--
2.39.2