From f964cfb7bcffc843469756feb15260dd623c38b5 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Mon, 28 Jun 2021 22:19:58 +0300 Subject: drm/msm/dpu: add support for alpha blending properties Add support for alpha blending properties. Setup the plane blend state according to those properties. Signed-off-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20210628191958.2754731-1-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 43 +++++++++++++++++++++---------- drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 10 ++++--- 2 files changed, 37 insertions(+), 16 deletions(-) (limited to 'drivers/gpu/drm/msm') diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 9a5c70c87cc8..768012243b44 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -30,12 +30,6 @@ #include "dpu_core_perf.h" #include "dpu_trace.h" -#define DPU_DRM_BLEND_OP_NOT_DEFINED 0 -#define DPU_DRM_BLEND_OP_OPAQUE 1 -#define DPU_DRM_BLEND_OP_PREMULTIPLIED 2 -#define DPU_DRM_BLEND_OP_COVERAGE 3 -#define DPU_DRM_BLEND_OP_MAX 4 - /* layer mixer index on dpu_crtc */ #define LEFT_MIXER 0 #define RIGHT_MIXER 1 @@ -146,20 +140,43 @@ static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer *mixer, { struct dpu_hw_mixer *lm = mixer->hw_lm; uint32_t blend_op; + uint32_t fg_alpha, bg_alpha; - /* default to opaque blending */ - blend_op = DPU_BLEND_FG_ALPHA_FG_CONST | - DPU_BLEND_BG_ALPHA_BG_CONST; + fg_alpha = pstate->base.alpha >> 8; + bg_alpha = 0xff - fg_alpha; - if (format->alpha_enable) { + /* default to opaque blending */ + if (pstate->base.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE || + !format->alpha_enable) { + blend_op = DPU_BLEND_FG_ALPHA_FG_CONST | + DPU_BLEND_BG_ALPHA_BG_CONST; + } else if (pstate->base.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI) { + blend_op = DPU_BLEND_FG_ALPHA_FG_CONST | + DPU_BLEND_BG_ALPHA_FG_PIXEL; + if (fg_alpha != 0xff) { + bg_alpha = fg_alpha; + blend_op |= DPU_BLEND_BG_MOD_ALPHA | + DPU_BLEND_BG_INV_MOD_ALPHA; + } else { + blend_op |= DPU_BLEND_BG_INV_ALPHA; + } + } else { /* coverage blending */ blend_op = DPU_BLEND_FG_ALPHA_FG_PIXEL | - DPU_BLEND_BG_ALPHA_FG_PIXEL | - DPU_BLEND_BG_INV_ALPHA; + DPU_BLEND_BG_ALPHA_FG_PIXEL; + if (fg_alpha != 0xff) { + bg_alpha = fg_alpha; + blend_op |= DPU_BLEND_FG_MOD_ALPHA | + DPU_BLEND_FG_INV_MOD_ALPHA | + DPU_BLEND_BG_MOD_ALPHA | + DPU_BLEND_BG_INV_MOD_ALPHA; + } else { + blend_op |= DPU_BLEND_BG_INV_ALPHA; + } } lm->ops.setup_blend_config(lm, pstate->stage, - 0xFF, 0, blend_op); + fg_alpha, bg_alpha, blend_op); DRM_DEBUG_ATOMIC("format:%p4cc, alpha_en:%u blend_op:0x%x\n", &format->base.pixel_format, format->alpha_enable, blend_op); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c index ec4a6f04394a..c989621209aa 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c @@ -1339,9 +1339,7 @@ static void dpu_plane_reset(struct drm_plane *plane) return; } - pstate->base.plane = plane; - - plane->state = &pstate->base; + __drm_atomic_helper_plane_reset(plane, &pstate->base); } #ifdef CONFIG_DEBUG_FS @@ -1647,6 +1645,12 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev, if (ret) DPU_ERROR("failed to install zpos property, rc = %d\n", ret); + drm_plane_create_alpha_property(plane); + drm_plane_create_blend_mode_property(plane, + BIT(DRM_MODE_BLEND_PIXEL_NONE) | + BIT(DRM_MODE_BLEND_PREMULTI) | + BIT(DRM_MODE_BLEND_COVERAGE)); + drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0, DRM_MODE_ROTATE_0 | -- cgit v1.2.3-58-ga151