linux-kernel - [PATCH v3 13/15] drm/msm/dpu: Support quad-pipe in SSPP checking

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Message-Id: <20241219-sm8650-v6-13-hmd-deckard-mdss-quad-upstream-32-v3-13-92c7c0a228e3@linaro.org>
Date: Thu, 19 Dec 2024 15:49:31 +0800
From: Jun Nie <jun.nie@...aro.org>
To: Rob Clark <robdclark@...il.com>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Jun Nie <jun.nie@...aro.org>
Subject: [PATCH v3 13/15] drm/msm/dpu: Support quad-pipe in SSPP checking

Move requreiment check to routine of every pipe check. There will be
multiple SSPPs for quad-pipe case in future. Only check valid pipe
as some pipes are for multi-rect or right half of screen that may
not be used.

Signed-off-by: Jun Nie <jun.nie@...aro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 86 +++++++++++++++----------------
 1 file changed, 42 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index fca6e609898a6..1cd98892898a4 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -730,12 +730,40 @@ static int dpu_plane_check_inline_rotation(struct dpu_plane *pdpu,
 static int dpu_plane_atomic_check_pipe(struct dpu_plane *pdpu,
 		struct dpu_sw_pipe *pipe,
 		struct dpu_sw_pipe_cfg *pipe_cfg,
-		const struct msm_format *fmt,
-		const struct drm_display_mode *mode)
+		const struct drm_display_mode *mode,
+		struct drm_plane_state *new_plane_state)
 {
 	uint32_t min_src_size;
 	struct dpu_kms *kms = _dpu_plane_get_kms(&pdpu->base);
 	int ret;
+	const struct msm_format *fmt;
+	uint32_t supported_rotations;
+	const struct dpu_sspp_cfg *pipe_hw_caps;
+	const struct dpu_sspp_sub_blks *sblk;
+
+	pipe_hw_caps = pipe->sspp->cap;
+	sblk = pipe->sspp->cap->sblk;
+
+	/*
+	 * We already have verified scaling against platform limitations.
+	 * Now check if the SSPP supports scaling at all.
+	 */
+	if (!sblk->scaler_blk.len &&
+	    ((drm_rect_width(&new_plane_state->src) >> 16 !=
+	      drm_rect_width(&new_plane_state->dst)) ||
+	     (drm_rect_height(&new_plane_state->src) >> 16 !=
+	      drm_rect_height(&new_plane_state->dst))))
+		return -ERANGE;
+
+	fmt = msm_framebuffer_format(new_plane_state->fb);
+
+	supported_rotations = DRM_MODE_REFLECT_MASK | DRM_MODE_ROTATE_0;
+
+	if (pipe_hw_caps->features & BIT(DPU_SSPP_INLINE_ROTATION))
+		supported_rotations |= DRM_MODE_ROTATE_90;
+
+	pipe_cfg->rotation = drm_rotation_simplify(new_plane_state->rotation,
+						   supported_rotations);
 
 	min_src_size = MSM_FORMAT_IS_YUV(fmt) ? 2 : 1;
 
@@ -981,49 +1009,19 @@ static int dpu_plane_atomic_check_sspp(struct drm_plane *plane,
 		drm_atomic_get_new_plane_state(state, plane);
 	struct dpu_plane *pdpu = to_dpu_plane(plane);
 	struct dpu_plane_state *pstate = to_dpu_plane_state(new_plane_state);
-	const struct msm_format *fmt;
-	struct dpu_sw_pipe *pipe = &pstate->pipe[0];
-	struct dpu_sw_pipe *r_pipe = &pstate->pipe[1];
-	struct dpu_sw_pipe_cfg *pipe_cfg = &pstate->pipe_cfg[0];
-	struct dpu_sw_pipe_cfg *r_pipe_cfg = &pstate->pipe_cfg[1];
-	uint32_t supported_rotations;
-	const struct dpu_sspp_cfg *pipe_hw_caps;
-	const struct dpu_sspp_sub_blks *sblk;
-	int ret = 0;
-
-	pipe_hw_caps = pipe->sspp->cap;
-	sblk = pipe->sspp->cap->sblk;
-
-	/*
-	 * We already have verified scaling against platform limitations.
-	 * Now check if the SSPP supports scaling at all.
-	 */
-	if (!sblk->scaler_blk.len &&
-	    ((drm_rect_width(&new_plane_state->src) >> 16 !=
-	      drm_rect_width(&new_plane_state->dst)) ||
-	     (drm_rect_height(&new_plane_state->src) >> 16 !=
-	      drm_rect_height(&new_plane_state->dst))))
-		return -ERANGE;
-
-	fmt = msm_framebuffer_format(new_plane_state->fb);
-
-	supported_rotations = DRM_MODE_REFLECT_MASK | DRM_MODE_ROTATE_0;
-
-	if (pipe_hw_caps->features & BIT(DPU_SSPP_INLINE_ROTATION))
-		supported_rotations |= DRM_MODE_ROTATE_90;
-
-	pipe_cfg->rotation = drm_rotation_simplify(new_plane_state->rotation,
-						   supported_rotations);
-	r_pipe_cfg->rotation = pipe_cfg->rotation;
-
-	ret = dpu_plane_atomic_check_pipe(pdpu, pipe, pipe_cfg, fmt,
-					  &crtc_state->adjusted_mode);
-	if (ret)
-		return ret;
+	struct dpu_sw_pipe *pipe;
+	struct dpu_sw_pipe_cfg *pipe_cfg;
+	int ret = 0, i;
 
-	if (drm_rect_width(&r_pipe_cfg->src_rect) != 0) {
-		ret = dpu_plane_atomic_check_pipe(pdpu, r_pipe, r_pipe_cfg, fmt,
-						  &crtc_state->adjusted_mode);
+	for (i = 0; i < PIPES_PER_PLANE; i++) {
+		pipe = &pstate->pipe[i];
+		pipe_cfg = &pstate->pipe_cfg[i];
+		if (!pipe_cfg->valid || !pipe->sspp)
+			continue;
+		DPU_DEBUG_PLANE(pdpu, "pipe %d is in use, validate it\n", i);
+		ret = dpu_plane_atomic_check_pipe(pdpu, pipe, pipe_cfg,
+						  &crtc_state->adjusted_mode,
+						  new_plane_state);
 		if (ret)
 			return ret;
 	}

-- 
2.34.1