From 74593a28c221246bc59a34fbad5e14134a93fc6a Mon Sep 17 00:00:00 2001 From: Sravanthi Kollukuduru Date: Wed, 22 Aug 2018 23:19:57 +0530 Subject: [PATCH] drm/msm/dpu: fix for cursor blend issue The current driver has the opaque blend mode set as the default causing the black box effect around the cursor. The fix enables choosing a different blend mode for alpha enabled formats. Changes in V2: - Use drm_get_format_name() in the logs (Sean) Signed-off-by: Sravanthi Kollukuduru Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 26 +++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 0cd9456a6c4c..07c2d15b45f2 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -297,14 +297,29 @@ static void dpu_crtc_destroy(struct drm_crtc *crtc) } static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer *mixer, - struct dpu_plane_state *pstate) + struct dpu_plane_state *pstate, struct dpu_format *format) { struct dpu_hw_mixer *lm = mixer->hw_lm; + uint32_t blend_op; + struct drm_format_name_buf format_name; /* default to opaque blending */ - lm->ops.setup_blend_config(lm, pstate->stage, 0XFF, 0, - DPU_BLEND_FG_ALPHA_FG_CONST | - DPU_BLEND_BG_ALPHA_BG_CONST); + blend_op = DPU_BLEND_FG_ALPHA_FG_CONST | + DPU_BLEND_BG_ALPHA_BG_CONST; + + if (format->alpha_enable) { + /* coverage blending */ + blend_op = DPU_BLEND_FG_ALPHA_FG_PIXEL | + DPU_BLEND_BG_ALPHA_FG_PIXEL | + DPU_BLEND_BG_INV_ALPHA; + } + + lm->ops.setup_blend_config(lm, pstate->stage, + 0xFF, 0, blend_op); + + DPU_DEBUG("format:%s, alpha_en:%u blend_op:0x%x\n", + drm_get_format_name(format->base.pixel_format, &format_name), + format->alpha_enable, blend_op); } static void _dpu_crtc_program_lm_output_roi(struct drm_crtc *crtc) @@ -401,7 +416,8 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc, /* blend config update */ for (lm_idx = 0; lm_idx < dpu_crtc->num_mixers; lm_idx++) { - _dpu_crtc_setup_blend_cfg(mixer + lm_idx, pstate); + _dpu_crtc_setup_blend_cfg(mixer + lm_idx, + pstate, format); mixer[lm_idx].flush_mask |= flush_mask; -- 2.30.2