diff mbox series

[v4,11/16] drm/msm/dpu: split PIPES_PER_STAGE definition per plane and mixer

Message ID 20250116-sm8650-v6-13-hmd-deckard-mdss-quad-upstream-33-v4-11-74749c6eba33@linaro.org (mailing list archive)
State New
Headers show
Series drm/msm/dpu: Support quad pipe with dual-DSI | expand

Commit Message

Jun Nie Jan. 16, 2025, 7:26 a.m. UTC
Split the PIPES_PER_STAGE definition per plane and mixer pair.
Currently, 2 pipes are supported for a plane at most. A stage struct
contains configuration for a mixer pair, so pipes per stage are
identical to pipes per plane in this case. More pipes will be required
for the quad-pipe case in the future, and pipes per stage will be
different from pipes per plane in this case. So pipes per plane is
split out as PIPES_PER_PLANE.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c    |  2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h |  1 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c   | 14 +++++++-------
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h   |  4 ++--
 4 files changed, 11 insertions(+), 10 deletions(-)

Comments

Dmitry Baryshkov Jan. 16, 2025, 8:04 a.m. UTC | #1
On Thu, Jan 16, 2025 at 03:26:00PM +0800, Jun Nie wrote:
> Split the PIPES_PER_STAGE definition per plane and mixer pair.

Why are you trying to repeat commit subject? I noticed this pattern in
other patches too.

> Currently, 2 pipes are supported for a plane at most. A stage struct
> contains configuration for a mixer pair, so pipes per stage are
> identical to pipes per plane in this case. More pipes will be required
> for the quad-pipe case in the future, and pipes per stage will be
> different from pipes per plane in this case. So pipes per plane is
> split out as PIPES_PER_PLANE.

The stage contains configuration for a mixer pair. Currently the plane
supports just one stage and 2 pipes. Quad-pipe support will require
handling 2 stages and 4 pipes at the same time. In preparation for that
add a separate define, PIPES_PER_PLANE, to denote number of pipes that
can be used by the plane.

With that being used as a commit message:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Please use this as an example of what is expected from the commit
messages.
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 193818b02197d..81474823e6799 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -463,7 +463,7 @@  static void _dpu_crtc_blend_setup_mixer(struct drm_crtc *crtc,
 		if (pstate->stage == DPU_STAGE_BASE && format->alpha_enable)
 			bg_alpha_enable = true;
 
-		for (i = 0; i < PIPES_PER_STAGE; i++) {
+		for (i = 0; i < PIPES_PER_PLANE; i++) {
 			if (!pstate->pipe[i].sspp)
 				continue;
 			set_bit(pstate->pipe[i].sspp->idx, fetch_active);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
index ba7bb05efe9b8..5f010d36672cc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
@@ -34,6 +34,7 @@ 
 #define DPU_MAX_PLANES			4
 #endif
 
+#define PIPES_PER_PLANE			2
 #define PIPES_PER_STAGE			2
 #ifndef DPU_MAX_DE_CURVES
 #define DPU_MAX_DE_CURVES		3
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 1adbf91be850f..3795576e2eedd 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1078,7 +1078,7 @@  static int dpu_plane_virtual_atomic_check(struct drm_plane *plane,
 		 * resources are freed by dpu_crtc_assign_plane_resources(),
 		 * but clean them here.
 		 */
-		for (i = 0; i < PIPES_PER_STAGE; i++)
+		for (i = 0; i < PIPES_PER_PLANE; i++)
 			pstate->pipe[i].sspp = NULL;
 
 		return 0;
@@ -1129,7 +1129,7 @@  static int dpu_plane_virtual_assign_resources(struct drm_crtc *crtc,
 	pipe_cfg = &pstate->pipe_cfg[0];
 	r_pipe_cfg = &pstate->pipe_cfg[1];
 
-	for (i = 0; i < PIPES_PER_STAGE; i++)
+	for (i = 0; i < PIPES_PER_PLANE; i++)
 		pstate->pipe[i].sspp = NULL;
 
 	if (!plane_state->fb)
@@ -1241,7 +1241,7 @@  void dpu_plane_flush(struct drm_plane *plane)
 		/* force 100% alpha */
 		_dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
 	else {
-		for (i = 0; i < PIPES_PER_STAGE; i++)
+		for (i = 0; i < PIPES_PER_PLANE; i++)
 			dpu_plane_flush_csc(pdpu, &pstate->pipe[i]);
 	}
 
@@ -1364,7 +1364,7 @@  static void dpu_plane_sspp_atomic_update(struct drm_plane *plane,
 			&fmt->pixel_format, MSM_FORMAT_IS_UBWC(fmt));
 
 	/* move the assignment here, to ease handling to another pairs later */
-	for (i = 0; i < PIPES_PER_STAGE; i++) {
+	for (i = 0; i < PIPES_PER_PLANE; i++) {
 		if (!pstate->pipe[i].sspp)
 			continue;
 		dpu_plane_sspp_update_pipe(plane, &pstate->pipe[i],
@@ -1378,7 +1378,7 @@  static void dpu_plane_sspp_atomic_update(struct drm_plane *plane,
 
 	pstate->plane_fetch_bw = 0;
 	pstate->plane_clk = 0;
-	for (i = 0; i < PIPES_PER_STAGE; i++) {
+	for (i = 0; i < PIPES_PER_PLANE; i++) {
 		if (!pstate->pipe[i].sspp)
 			continue;
 		pstate->plane_fetch_bw += _dpu_plane_calc_bw(pdpu->catalog, fmt,
@@ -1397,7 +1397,7 @@  static void _dpu_plane_atomic_disable(struct drm_plane *plane)
 	struct dpu_sw_pipe *pipe;
 	int i;
 
-	for (i = 0; i < PIPES_PER_STAGE; i += 1) {
+	for (i = 0; i < PIPES_PER_PLANE; i += 1) {
 		pipe = &pstate->pipe[i];
 		if (!pipe->sspp)
 			continue;
@@ -1516,7 +1516,7 @@  static void dpu_plane_atomic_print_state(struct drm_printer *p,
 
 	drm_printf(p, "\tstage=%d\n", pstate->stage);
 
-	for (i = 0; i < PIPES_PER_STAGE; i++) {
+	for (i = 0; i < PIPES_PER_PLANE; i++) {
 		pipe = &pstate->pipe[i];
 		if (!pipe->sspp)
 			continue;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index 052fd046e8463..18ff5ec2603ed 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -33,8 +33,8 @@ 
 struct dpu_plane_state {
 	struct drm_plane_state base;
 	struct msm_gem_address_space *aspace;
-	struct dpu_sw_pipe pipe[PIPES_PER_STAGE];
-	struct dpu_sw_pipe_cfg pipe_cfg[PIPES_PER_STAGE];
+	struct dpu_sw_pipe pipe[PIPES_PER_PLANE];
+	struct dpu_sw_pipe_cfg pipe_cfg[PIPES_PER_PLANE];
 	enum dpu_stage stage;
 	bool needs_qos_remap;
 	bool pending;