Hi Tobias,
On 03.03.2017 14:40, Tobias Jakobi wrote:
> Convert if-statements to switch statement. Removes
> duplicated code.
>
> Signed-off-by: Tobias Jakobi <tjakobi@xxxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos_mixer.c | 30 ++++++++----------------------
> 1 file changed, 8 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
> index 72143ac..41d0c36 100644
> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
> @@ -382,29 +382,14 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
> struct mixer_resources *res = &ctx->mixer_res;
> u32 val;
>
> - if (height == 480) {
> + switch (height) {
> + case 480:
> + case 576:
> val = MXR_CFG_RGB601_0_255;
> - } else if (height == 576) {
> - val = MXR_CFG_RGB601_0_255;
> - } else if (height == 720) {
> - val = MXR_CFG_RGB709_16_235;
> - mixer_reg_write(res, MXR_CM_COEFF_Y,
> - (1 << 30) | (94 << 20) | (314 << 10) |
> - (32 << 0));
> - mixer_reg_write(res, MXR_CM_COEFF_CB,
> - (972 << 20) | (851 << 10) | (225 << 0));
> - mixer_reg_write(res, MXR_CM_COEFF_CR,
> - (225 << 20) | (820 << 10) | (1004 << 0));
> - } else if (height == 1080) {
> - val = MXR_CFG_RGB709_16_235;
> - mixer_reg_write(res, MXR_CM_COEFF_Y,
> - (1 << 30) | (94 << 20) | (314 << 10) |
> - (32 << 0));
> - mixer_reg_write(res, MXR_CM_COEFF_CB,
> - (972 << 20) | (851 << 10) | (225 << 0));
> - mixer_reg_write(res, MXR_CM_COEFF_CR,
> - (225 << 20) | (820 << 10) | (1004 << 0));
> - } else {
> + break;
> + case 720:
> + case 1080:
> + default:
> val = MXR_CFG_RGB709_16_235;
> mixer_reg_write(res, MXR_CM_COEFF_Y,
> (1 << 30) | (94 << 20) | (314 << 10) |
> @@ -413,6 +398,7 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
> (972 << 20) | (851 << 10) | (225 << 0));
> mixer_reg_write(res, MXR_CM_COEFF_CR,
> (225 << 20) | (820 << 10) | (1004 << 0));
> + break;
> }
Good change.
Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
One small nitpick.
As I see this conditional/switch is to decide about BT standard
depending on the height. The similar problem is addressed in exynos-gsc
patches [1].
It would be good to have the same criteria to distinguish SD/HD mode. I
think ((height > 576) || (width > 720)) is more generic, in this case
even (height > 576) looks better, but as this changes logic of the code
it could be in separate patch.
[1]: https://lkml.org/lkml/2017/2/21/864
Regards
Andrzej
>
> mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
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