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authorJernej Skrabec <jernej.skrabec@gmail.com>2022-06-20 20:55:16 +0300
committerMauro Carvalho Chehab <mchehab@kernel.org>2022-07-17 13:06:59 +0300
commitc6618d2789044855cc3e155ae4ee544b3a8a4ef2 (patch)
tree37f5a8b83c7a18f0331716705ef859bd231495f1 /drivers/staging
parent0ede8c820ae0bdf7036127934521c6ea8376fc5f (diff)
downloadlinux-c6618d2789044855cc3e155ae4ee544b3a8a4ef2.tar.xz
media: cedrus: Add helper for determining number of elements
Now that controls can be dynamic arrays, we need to know how many elements are in such array. Add a helper for that. Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r--drivers/staging/media/sunxi/cedrus/cedrus.c11
-rw-r--r--drivers/staging/media/sunxi/cedrus/cedrus.h1
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
index 99c87319d2b4..b855e608885c 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -232,6 +232,17 @@ void *cedrus_find_control_data(struct cedrus_ctx *ctx, u32 id)
return NULL;
}
+u32 cedrus_get_num_of_controls(struct cedrus_ctx *ctx, u32 id)
+{
+ unsigned int i;
+
+ for (i = 0; ctx->ctrls[i]; i++)
+ if (ctx->ctrls[i]->id == id)
+ return ctx->ctrls[i]->elems;
+
+ return 0;
+}
+
static int cedrus_init_ctrls(struct cedrus_dev *dev, struct cedrus_ctx *ctx)
{
struct v4l2_ctrl_handler *hdl = &ctx->hdl;
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
index d2b697a9ded2..15a1bdbf6a1f 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
@@ -261,5 +261,6 @@ vb2_to_cedrus_buffer(const struct vb2_buffer *p)
}
void *cedrus_find_control_data(struct cedrus_ctx *ctx, u32 id);
+u32 cedrus_get_num_of_controls(struct cedrus_ctx *ctx, u32 id);
#endif