linux-kernel - [PATCH RFC v7 09/10] drm/msm/dpu: Use DRM solid

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Message-ID: <20231027-solid-fill-v7-9-780188bfa7b2@quicinc.com>
Date:   Fri, 27 Oct 2023 15:32:59 -0700
From:   Jessica Zhang <quic_jesszhan@...cinc.com>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Sean Paul" <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>
CC:     <quic_abhinavk@...cinc.com>, <ppaalanen@...il.com>,
        <contact@...rsion.fr>, <laurent.pinchart@...asonboard.com>,
        <sebastian.wick@...hat.com>, <ville.syrjala@...ux.intel.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <freedreno@...ts.freedesktop.org>,
        <wayland-devel@...ts.freedesktop.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH RFC v7 09/10] drm/msm/dpu: Use DRM solid_fill property

Drop DPU_PLANE_COLOR_FILL_FLAG and check the DRM solid_fill property to
determine if the plane is solid fill. In addition drop the DPU plane
color_fill field as we can now use drm_plane_state.solid_fill instead,
and pass in drm_plane_state.alpha to _dpu_plane_color_fill_pipe() to
allow userspace to configure the alpha value for the solid fill color.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 38 ++++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 9615653db787..832747080daf 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -42,7 +42,6 @@
 #define SHARP_SMOOTH_THR_DEFAULT	8
 #define SHARP_NOISE_THR_DEFAULT	2
 
-#define DPU_PLANE_COLOR_FILL_FLAG	BIT(31)
 #define DPU_ZPOS_MAX 255
 
 /*
@@ -84,7 +83,6 @@ struct dpu_plane {
 
 	enum dpu_sspp pipe;
 
-	uint32_t color_fill;
 	bool is_error;
 	bool is_rt_pipe;
 	const struct dpu_mdss_cfg *catalog;
@@ -640,19 +638,34 @@ static void _dpu_plane_color_fill_pipe(struct dpu_plane_state *pstate,
 	_dpu_plane_setup_scaler(pipe, fmt, true, &pipe_cfg, pstate->rotation);
 }
 
+static uint32_t _dpu_plane_get_abgr_fill_color(struct drm_plane_state *state)
+{
+	struct drm_solid_fill solid_fill = state->solid_fill;
+
+	uint32_t ret = 0;
+	uint8_t a = state->alpha & 0xFF;
+	uint8_t b = solid_fill.b >> 24;
+	uint8_t g = solid_fill.g >> 24;
+	uint8_t r = solid_fill.r >> 24;
+
+	ret |= a << 24;
+	ret |= b << 16;
+	ret |= g << 8;
+	ret |= r;
+
+	return ret;
+}
+
 /**
  * _dpu_plane_color_fill - enables color fill on plane
  * @pdpu:   Pointer to DPU plane object
  * @color:  RGB fill color value, [23..16] Blue, [15..8] Green, [7..0] Red
- * @alpha:  8-bit fill alpha value, 255 selects 100% alpha
  */
-static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
-		uint32_t color, uint32_t alpha)
+static void _dpu_plane_color_fill(struct dpu_plane *pdpu, uint32_t color)
 {
 	const struct dpu_format *fmt;
 	const struct drm_plane *plane = &pdpu->base;
 	struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
-	u32 fill_color = (color & 0xFFFFFF) | ((alpha & 0xFF) << 24);
 
 	DPU_DEBUG_PLANE(pdpu, "\n");
 
@@ -667,11 +680,11 @@ static void _dpu_plane_color_fill(struct dpu_plane *pdpu,
 
 	/* update sspp */
 	_dpu_plane_color_fill_pipe(pstate, &pstate->pipe, &pstate->pipe_cfg.dst_rect,
-				   fill_color, fmt);
+				   color, fmt);
 
 	if (pstate->r_pipe.sspp)
 		_dpu_plane_color_fill_pipe(pstate, &pstate->r_pipe, &pstate->r_pipe_cfg.dst_rect,
-					   fill_color, fmt);
+					   color, fmt);
 }
 
 static int dpu_plane_prepare_fb(struct drm_plane *plane,
@@ -1019,10 +1032,9 @@ void dpu_plane_flush(struct drm_plane *plane)
 	 */
 	if (pdpu->is_error)
 		/* force white frame with 100% alpha pipe output on error */
-		_dpu_plane_color_fill(pdpu, 0xFFFFFF, 0xFF);
-	else if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG)
-		/* force 100% alpha */
-		_dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
+		_dpu_plane_color_fill(pdpu, 0xFFFFFFFF);
+	else if (drm_plane_solid_fill_enabled(plane->state))
+		_dpu_plane_color_fill(pdpu, _dpu_plane_get_abgr_fill_color(plane->state));
 	else {
 		dpu_plane_flush_csc(pdpu, &pstate->pipe);
 		dpu_plane_flush_csc(pdpu, &pstate->r_pipe);
@@ -1067,7 +1079,7 @@ static void dpu_plane_sspp_update_pipe(struct drm_plane *plane,
 	}
 
 	/* override for color fill */
-	if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG) {
+	if (drm_plane_solid_fill_enabled(plane->state)) {
 		_dpu_plane_set_qos_ctrl(plane, pipe, false);
 
 		/* skip remaining processing on color fill */

-- 
2.42.0