On 10/04/2021 21:59, Mitali Borkar wrote:
> Declared 32 bit unsigned int as static constant inside a function and
> replaced u32[] {x,y} as canvas1, canvas2 in codec_mpeg12.c
> This indicates the value of canvas indexes will remain constant throughout execution.
> Replaced u32 reg_base and u32 reg_name with const u32 reg_base and const
> u32 reg_name as it will contain data/registry bases to write static
> const indexes declared above and will keep track of of contiguos
> registers after each reg_base.
> This makes code look better, neater. It improves readability.
>
> Signed-off-by: Mitali Borkar <mitaliborkar810@xxxxxxxxx>
> ---
> drivers/staging/media/meson/vdec/codec_mpeg12.c | 5 +++--
Also change drivers/staging/media/meson/vdec/codec_h264.c.
It's a nice improvement, so let's do this for both callers of amvdec_set_canvases().
Regards,
Hans
> drivers/staging/media/meson/vdec/vdec_helpers.c | 2 +-
> drivers/staging/media/meson/vdec/vdec_helpers.h | 2 +-
> 3 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/meson/vdec/codec_mpeg12.c b/drivers/staging/media/meson/vdec/codec_mpeg12.c
> index 21e93a13356c..861d8584f22f 100644
> --- a/drivers/staging/media/meson/vdec/codec_mpeg12.c
> +++ b/drivers/staging/media/meson/vdec/codec_mpeg12.c
> @@ -65,6 +65,8 @@ static int codec_mpeg12_start(struct amvdec_session *sess)
> struct amvdec_core *core = sess->core;
> struct codec_mpeg12 *mpeg12;
> int ret;
> + static const u32 canvas1[] = { AV_SCRATCH_0, 0 };
> + static const u32 canvas2[] = { 8, 0 }
>
> mpeg12 = kzalloc(sizeof(*mpeg12), GFP_KERNEL);
> if (!mpeg12)
> @@ -80,8 +82,7 @@ static int codec_mpeg12_start(struct amvdec_session *sess)
> goto free_mpeg12;
> }
>
> - ret = amvdec_set_canvases(sess, (u32[]){ AV_SCRATCH_0, 0 },
> - (u32[]){ 8, 0 });
> + ret = amvdec_set_canvases(sess, canvas1, canvas2);
> if (ret)
> goto free_workspace;
>
> diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.c b/drivers/staging/media/meson/vdec/vdec_helpers.c
> index 7f07a9175815..df5c27266c44 100644
> --- a/drivers/staging/media/meson/vdec/vdec_helpers.c
> +++ b/drivers/staging/media/meson/vdec/vdec_helpers.c
> @@ -177,7 +177,7 @@ static int set_canvas_nv12m(struct amvdec_session *sess,
> }
>
> int amvdec_set_canvases(struct amvdec_session *sess,
> - u32 reg_base[], u32 reg_num[])
> + const u32 reg_base[], const u32 reg_num[])
> {
> struct v4l2_m2m_buffer *buf;
> u32 pixfmt = sess->pixfmt_cap;
> diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.h b/drivers/staging/media/meson/vdec/vdec_helpers.h
> index cfaed52ab526..ace8897c34fe 100644
> --- a/drivers/staging/media/meson/vdec/vdec_helpers.h
> +++ b/drivers/staging/media/meson/vdec/vdec_helpers.h
> @@ -17,7 +17,7 @@
> * @reg_num: number of contiguous registers after each reg_base (including it)
> */
> int amvdec_set_canvases(struct amvdec_session *sess,
> - u32 reg_base[], u32 reg_num[]);
> + const u32 reg_base[], const u32 reg_num[]);
>
> /* Helpers to read/write to the various IPs (DOS, PARSER) */
> u32 amvdec_read_dos(struct amvdec_core *core, u32 reg);
>
