| Message ID | 20240717-alpha-blending-v4-2-4b1c806c0749@mediatek.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Support alpha blending in MTK display driver | expand |
Hi, Shawn: On Wed, 2024-07-17 at 13:24 +0800, Hsiao Chien Sung via B4 Relay wrote: > > External email : Please do not click links or open attachments until you have verified the sender or the content. > From: Hsiao Chien Sung <shawn.sung@mediatek.com> > > Support "None" alpha blending mode on MediaTek's chips. Reviewed-by: CK Hu <ck.hu@mediatek.com> > > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_ethdr.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c > index 9dfd13d32dfa..80ccdad3741b 100644 > --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c > +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c > @@ -3,6 +3,7 @@ > * Copyright (c) 2021 MediaTek Inc. > */ > > +#include <drm/drm_blend.h> > #include <drm/drm_fourcc.h> > #include <drm/drm_framebuffer.h> > #include <linux/clk.h> > @@ -175,7 +176,8 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, > alpha_con |= state->base.alpha & MIXER_ALPHA; > } > > -if (state->base.fb && !state->base.fb->format->has_alpha) { > +if ((state->base.fb && !state->base.fb->format->has_alpha) || > + state->base.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) { > /* > * Mixer doesn't support CONST_BLD mode, > * use a trick to make the output equivalent > > -- > 2.43.0 > >
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c index 9dfd13d32dfa..80ccdad3741b 100644 --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -3,6 +3,7 @@ * Copyright (c) 2021 MediaTek Inc. */ +#include <drm/drm_blend.h> #include <drm/drm_fourcc.h> #include <drm/drm_framebuffer.h> #include <linux/clk.h> @@ -175,7 +176,8 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, alpha_con |= state->base.alpha & MIXER_ALPHA; } - if (state->base.fb && !state->base.fb->format->has_alpha) { + if ((state->base.fb && !state->base.fb->format->has_alpha) || + state->base.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) { /* * Mixer doesn't support CONST_BLD mode, * use a trick to make the output equivalent