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Message-Id: <20231224114916.111433-8-krzysztof.kozlowski@linaro.org>
Date: Sun, 24 Dec 2023 12:49:12 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Sylwester Nawrocki <s.nawrocki@...sung.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Alim Akhtar <alim.akhtar@...sung.com>,
linux-media@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 08/12] media: fimc-is: constify fimc_formats array
Pointers to elements of the static array "fimc_formats" with "struct
fimc_fmt" are passed all around to various calls, but all of them do not
modify pointed data. Constify the pointers everywhere which at the end
allows to make static array "fimc_formats" const itself.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
.../samsung/exynos4-is/fimc-capture.c | 26 +++++++++----------
.../platform/samsung/exynos4-is/fimc-core.c | 11 ++++----
.../platform/samsung/exynos4-is/fimc-core.h | 9 ++++---
.../platform/samsung/exynos4-is/fimc-m2m.c | 7 ++---
4 files changed, 28 insertions(+), 25 deletions(-)
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-capture.c b/drivers/media/platform/samsung/exynos4-is/fimc-capture.c
index dde36e5be0c7..a3a677a3065f 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-capture.c
@@ -559,9 +559,9 @@ static const struct v4l2_file_operations fimc_capture_fops = {
* Format and crop negotiation helpers
*/
-static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
- u32 *width, u32 *height,
- u32 *code, u32 *fourcc, int pad)
+static const struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
+ u32 *width, u32 *height,
+ u32 *code, u32 *fourcc, int pad)
{
bool rotation = ctx->rotation == 90 || ctx->rotation == 270;
struct fimc_dev *fimc = ctx->fimc_dev;
@@ -569,8 +569,8 @@ static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx,
const struct fimc_pix_limit *pl = var->pix_limit;
struct fimc_frame *dst = &ctx->d_frame;
u32 depth, min_w, max_w, min_h, align_h = 3;
+ const struct fimc_fmt *ffmt;
u32 mask = FMT_FLAGS_CAM;
- struct fimc_fmt *ffmt;
/* Conversion from/to JPEG or User Defined format is not supported */
if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
@@ -757,7 +757,7 @@ static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
*/
static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
struct v4l2_mbus_framefmt *tfmt,
- struct fimc_fmt **fmt_id,
+ const struct fimc_fmt **fmt_id,
bool set)
{
struct fimc_dev *fimc = ctx->fimc_dev;
@@ -768,8 +768,8 @@ static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
: V4L2_SUBDEV_FORMAT_TRY,
};
struct v4l2_mbus_framefmt *mf = &sfmt.format;
+ const struct fimc_fmt *ffmt;
struct media_entity *me;
- struct fimc_fmt *ffmt;
struct media_pad *pad;
int ret, i = 1;
u32 fcc;
@@ -903,8 +903,8 @@ static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
*/
static int __video_try_or_set_format(struct fimc_dev *fimc,
struct v4l2_format *f, bool try,
- struct fimc_fmt **inp_fmt,
- struct fimc_fmt **out_fmt)
+ const struct fimc_fmt **inp_fmt,
+ const struct fimc_fmt **out_fmt)
{
struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
struct fimc_vid_cap *vc = &fimc->vid_cap;
@@ -986,7 +986,7 @@ static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
struct v4l2_format *f)
{
struct fimc_dev *fimc = video_drvdata(file);
- struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
+ const struct fimc_fmt *out_fmt = NULL, *inp_fmt = NULL;
return __video_try_or_set_format(fimc, f, true, &inp_fmt, &out_fmt);
}
@@ -1012,7 +1012,7 @@ static int __fimc_capture_set_format(struct fimc_dev *fimc,
struct fimc_ctx *ctx = vc->ctx;
struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
struct fimc_frame *ff = &ctx->d_frame;
- struct fimc_fmt *inp_fmt = NULL;
+ const struct fimc_fmt *inp_fmt = NULL;
int ret, i;
if (vb2_is_busy(&fimc->vid_cap.vbq))
@@ -1519,7 +1519,7 @@ static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
struct fimc_vid_cap *vc = &fimc->vid_cap;
struct fimc_ctx *ctx = vc->ctx;
struct fimc_frame *ff;
- struct fimc_fmt *ffmt;
+ const struct fimc_fmt *ffmt;
dbg("pad%d: code: 0x%x, %dx%d",
fmt->pad, mf->code, mf->width, mf->height);
@@ -1715,9 +1715,9 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
{
struct video_device *vfd = &fimc->vid_cap.ve.vdev;
struct vb2_queue *q = &fimc->vid_cap.vbq;
- struct fimc_ctx *ctx;
struct fimc_vid_cap *vid_cap;
- struct fimc_fmt *fmt;
+ const struct fimc_fmt *fmt;
+ struct fimc_ctx *ctx;
int ret = -ENOMEM;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-core.c b/drivers/media/platform/samsung/exynos4-is/fimc-core.c
index 13b04fda8716..37f4952c7a9b 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-core.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-core.c
@@ -33,7 +33,7 @@ static const char *fimc_clocks[MAX_FIMC_CLOCKS] = {
"sclk_fimc", "fimc"
};
-static struct fimc_fmt fimc_formats[] = {
+static const struct fimc_fmt fimc_formats[] = {
{
.fourcc = V4L2_PIX_FMT_RGB565,
.depth = { 16 },
@@ -180,7 +180,7 @@ static struct fimc_fmt fimc_formats[] = {
},
};
-struct fimc_fmt *fimc_get_format(unsigned int index)
+const struct fimc_fmt *fimc_get_format(unsigned int index)
{
if (index >= ARRAY_SIZE(fimc_formats))
return NULL;
@@ -752,10 +752,11 @@ void fimc_adjust_mplane_format(const struct fimc_fmt *fmt, u32 width, u32 height
* @mask: the color flags to match
* @index: offset in the fimc_formats array, ignored if negative
*/
-struct fimc_fmt *fimc_find_format(const u32 *pixelformat, const u32 *mbus_code,
- unsigned int mask, int index)
+const struct fimc_fmt *fimc_find_format(const u32 *pixelformat,
+ const u32 *mbus_code,
+ unsigned int mask, int index)
{
- struct fimc_fmt *fmt, *def_fmt = NULL;
+ const struct fimc_fmt *fmt, *def_fmt = NULL;
unsigned int i;
int id = 0;
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-core.h b/drivers/media/platform/samsung/exynos4-is/fimc-core.h
index 261c9aac2f7f..63385152a2ff 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-core.h
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-core.h
@@ -257,7 +257,7 @@ struct fimc_frame {
unsigned int bytesperline[VIDEO_MAX_PLANES];
struct fimc_addr addr;
struct fimc_dma_offset dma_offset;
- struct fimc_fmt *fmt;
+ const struct fimc_fmt *fmt;
u8 alpha;
};
@@ -617,9 +617,10 @@ void fimc_alpha_ctrl_update(struct fimc_ctx *ctx);
void __fimc_get_format(const struct fimc_frame *frame, struct v4l2_format *f);
void fimc_adjust_mplane_format(const struct fimc_fmt *fmt, u32 width, u32 height,
struct v4l2_pix_format_mplane *pix);
-struct fimc_fmt *fimc_find_format(const u32 *pixelformat, const u32 *mbus_code,
- unsigned int mask, int index);
-struct fimc_fmt *fimc_get_format(unsigned int index);
+const struct fimc_fmt *fimc_find_format(const u32 *pixelformat,
+ const u32 *mbus_code,
+ unsigned int mask, int index);
+const struct fimc_fmt *fimc_get_format(unsigned int index);
int fimc_check_scaler_ratio(struct fimc_ctx *ctx, int sw, int sh,
int dw, int dh, int rotation);
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-m2m.c b/drivers/media/platform/samsung/exynos4-is/fimc-m2m.c
index 1918390a2469..e9023f64cfba 100644
--- a/drivers/media/platform/samsung/exynos4-is/fimc-m2m.c
+++ b/drivers/media/platform/samsung/exynos4-is/fimc-m2m.c
@@ -314,7 +314,8 @@ static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
return fimc_try_fmt_mplane(ctx, f);
}
-static void __set_frame_format(struct fimc_frame *frame, struct fimc_fmt *fmt,
+static void __set_frame_format(struct fimc_frame *frame,
+ const struct fimc_fmt *fmt,
struct v4l2_pix_format_mplane *pixm)
{
int i;
@@ -340,7 +341,7 @@ static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
{
struct fimc_ctx *ctx = fh_to_ctx(fh);
struct fimc_dev *fimc = ctx->fimc_dev;
- struct fimc_fmt *fmt;
+ const struct fimc_fmt *fmt;
struct vb2_queue *vq;
struct fimc_frame *frame;
int ret;
@@ -588,7 +589,7 @@ static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
.sizeimage = 800 * 4 * 600,
},
};
- struct fimc_fmt *fmt;
+ const struct fimc_fmt *fmt;
fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
if (!fmt)
--
2.34.1
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