[PATCH v5 13/22] media: rzg2l-cru: Simplify handling of supported formats

Prabhakar
2024-10-11T17:31:15Z

Refactor the handling of supported formats in the RZ/G2L CRU driver by
moving the `rzg2l_cru_ip_format` struct to the common header for reuse
across multiple files and adding `pixelformat` and `bpp` members to it.
This change centralizes format handling, making it easier to manage and
extend.

New helper functions, `rzg2l_cru_ip_format_to_fmt()` and
`rzg2l_cru_ip_index_to_fmt()`, are added to retrieve format information
based on 4CC format and index, respectively. These helpers allow the
removal of the now redundant `rzg2l_cru_format_from_pixel()` function.

The new helpers are used in `rzg2l_cru_format_bytesperline()`,
`rzg2l_cru_format_align()`, and `rzg2l_cru_enum_fmt_vid_cap()`,
streamlining the handling of supported formats and improving code
maintainability.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
.../platform/renesas/rzg2l-cru/rzg2l-cru.h | 6 ++++
.../platform/renesas/rzg2l-cru/rzg2l-ip.c | 22 +++++++++++++
.../platform/renesas/rzg2l-cru/rzg2l-video.c | 33 +++++--------------
3 files changed, 37 insertions(+), 24 deletions(-)

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
index 9b1ba015df3b..327516272e53 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
@@ -66,10 +66,14 @@ struct rzg2l_cru_ip {
* struct rzg2l_cru_ip_format - CRU IP format
* @code: Media bus code
* @datatype: MIPI CSI2 data type
+ * @format: 4CC format identifier (V4L2_PIX_FMT_*)
+ * @bpp: bytes per pixel
*/
struct rzg2l_cru_ip_format {
u32 code;
u32 datatype;
+ u32 format;
+ u8 bpp;
};

/**
@@ -161,5 +165,7 @@ void rzg2l_cru_ip_subdev_unregister(struct rzg2l_cru_dev *cru);
struct v4l2_mbus_framefmt *rzg2l_cru_ip_get_src_fmt(struct rzg2l_cru_dev *cru);

const struct rzg2l_cru_ip_format *rzg2l_cru_ip_code_to_fmt(unsigned int code);
+const struct rzg2l_cru_ip_format *rzg2l_cru_ip_format_to_fmt(u32 format);
+const struct rzg2l_cru_ip_format *rzg2l_cru_ip_index_to_fmt(u32 index);

#endif
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
index 8f9683bf31fa..a40b0184b955 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
@@ -14,6 +14,8 @@ static const struct rzg2l_cru_ip_format rzg2l_cru_ip_formats[] = {
{
.code = MEDIA_BUS_FMT_UYVY8_1X16,
.datatype = MIPI_CSI2_DT_YUV422_8B,
+ .format = V4L2_PIX_FMT_UYVY,
+ .bpp = 2,
},
};

@@ -28,6 +30,26 @@ const struct rzg2l_cru_ip_format *rzg2l_cru_ip_code_to_fmt(unsigned int code)
return NULL;
}

+const struct rzg2l_cru_ip_format *rzg2l_cru_ip_format_to_fmt(u32 format)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(rzg2l_cru_ip_formats); i++) {
+ if (rzg2l_cru_ip_formats[i].format == format)
+ return &rzg2l_cru_ip_formats[i];
+ }
+
+ return NULL;
+}
+
+const struct rzg2l_cru_ip_format *rzg2l_cru_ip_index_to_fmt(u32 index)
+{
+ if (index >= ARRAY_SIZE(rzg2l_cru_ip_formats))
+ return NULL;
+
+ return &rzg2l_cru_ip_formats[index];
+}
+
struct v4l2_mbus_framefmt *rzg2l_cru_ip_get_src_fmt(struct rzg2l_cru_dev *cru)
{
struct v4l2_subdev_state *state;
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index 6a4f0455dc9c..a0fa4542ac43 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -812,37 +812,19 @@ int rzg2l_cru_dma_register(struct rzg2l_cru_dev *cru)
* V4L2 stuff
*/

-static const struct v4l2_format_info rzg2l_cru_formats[] = {
- {
- .format = V4L2_PIX_FMT_UYVY,
- .bpp[0] = 2,
- },
-};
-
-const struct v4l2_format_info *rzg2l_cru_format_from_pixel(u32 format)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(rzg2l_cru_formats); i++)
- if (rzg2l_cru_formats[i].format == format)
- return rzg2l_cru_formats + i;
-
- return NULL;
-}
-
static u32 rzg2l_cru_format_bytesperline(struct v4l2_pix_format *pix)
{
- const struct v4l2_format_info *fmt;
+ const struct rzg2l_cru_ip_format *fmt;

- fmt = rzg2l_cru_format_from_pixel(pix->pixelformat);
+ fmt = rzg2l_cru_ip_format_to_fmt(pix->pixelformat);

- return pix->width * fmt->bpp[0];
+ return pix->width * fmt->bpp;
}

static void rzg2l_cru_format_align(struct rzg2l_cru_dev *cru,
struct v4l2_pix_format *pix)
{
- if (!rzg2l_cru_format_from_pixel(pix->pixelformat))
+ if (!rzg2l_cru_ip_format_to_fmt(pix->pixelformat))
pix->pixelformat = RZG2L_CRU_DEFAULT_FORMAT;

switch (pix->field) {
@@ -934,10 +916,13 @@ static int rzg2l_cru_g_fmt_vid_cap(struct file *file, void *priv,
static int rzg2l_cru_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
- if (f->index >= ARRAY_SIZE(rzg2l_cru_formats))
+ const struct rzg2l_cru_ip_format *fmt;
+
+ fmt = rzg2l_cru_ip_index_to_fmt(f->index);
+ if (!fmt)
return -EINVAL;

- f->pixelformat = rzg2l_cru_formats[f->index].format;
+ f->pixelformat = fmt->format;

return 0;
}
--
2.43.0