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SubjectRe: [PATCH v2 1/2] drm/sun4i: Add alpha property for sun8i UI layer
Date
Hi!

Dne ponedeljek, 30. december 2019 ob 19:08:41 CET je
roman.stratiienko@globallogic.com napisal(a):
> From: Roman Stratiienko <roman.stratiienko@globallogic.com>
>
> DE2.0 and DE3.0 UI layers supports plane-global alpha channel.
> Add alpha property to the DRM plane and connect it to the
> corresponding registers in mixer.
>
> Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>

Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>

BTW, patch is marked as v2, but I don't see any changelog. What did you
change?

Best regards,
Jernej

> ---
> drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 29 ++++++++++++++++++++++++++
> drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 5 +++++
> 2 files changed, 34 insertions(+)
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c index c87fd842918e..4343ea9f8cf8
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
> @@ -72,6 +72,27 @@ static void sun8i_ui_layer_enable(struct sun8i_mixer
> *mixer, int channel, }
> }
>
> +static void sun8i_ui_layer_update_alpha(struct sun8i_mixer *mixer, int
> channel, + int overlay, struct
drm_plane *plane)
> +{
> + u32 mask, val, ch_base;
> +
> + ch_base = sun8i_channel_base(mixer, channel);
> +
> + mask = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_MASK |
> + SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK;
> +
> + val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(plane->state->alpha >>
8);
> +
> + val |= (plane->state->alpha == DRM_BLEND_ALPHA_OPAQUE) ?
> + SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL :
> + SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED;
> +
> + regmap_update_bits(mixer->engine.regs,
> + SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base,
overlay),
> + mask, val);
> +}
> +
> static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int
> channel, int overlay, struct drm_plane *plane,
> unsigned int zpos)
> @@ -288,6 +309,8 @@ static void sun8i_ui_layer_atomic_update(struct
> drm_plane *plane,
>
> sun8i_ui_layer_update_coord(mixer, layer->channel,
> layer->overlay, plane, zpos);
> + sun8i_ui_layer_update_alpha(mixer, layer->channel,
> + layer->overlay, plane);
> sun8i_ui_layer_update_formats(mixer, layer->channel,
> layer->overlay, plane);
> sun8i_ui_layer_update_buffer(mixer, layer->channel,
> @@ -365,6 +388,12 @@ struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct
> drm_device *drm,
>
> plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
>
> + ret = drm_plane_create_alpha_property(&layer->plane);
> + if (ret) {
> + dev_err(drm->dev, "Couldn't add alpha property\n");
> + return ERR_PTR(ret);
> + }
> +
> ret = drm_plane_create_zpos_property(&layer->plane, channel,
> 0, plane_cnt -
1);
> if (ret) {
> diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
> b/drivers/gpu/drm/sun4i/sun8i_ui_layer.h index f4ab1cf6cded..e3e32ee1178d
> 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
> +++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
> @@ -40,6 +40,11 @@
> #define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_MASK GENMASK(12, 8)
> #define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_FBFMT_OFFSET 8
> #define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MASK GENMASK(31, 24)
> +#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA(x) ((x) << 24)
> +
> +#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_PIXEL
((0) << 1)
> +#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_LAYER
((1) << 1)
> +#define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED ((2) << 1)
>
> struct sun8i_mixer;




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