Re: [PATCH 01/25] drm/msm/dpu: rip out master planes support

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On 2/9/2022 9:24 AM, Dmitry Baryshkov wrote:
Master/virtual planes were used for multirect support. In preparation to
reworking DPU planes, drop support for master planes (which was not used
anyway).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Agreed, master planes were unused today anyway.
hence,
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c    | 11 +---
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c |  3 +-
  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h |  4 +-
  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     |  2 +-
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c   | 72 ++++-----------------
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h   | 13 +---
  6 files changed, 18 insertions(+), 87 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index e7c9fe1a250f..7318bd45637a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1138,17 +1138,8 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc,
  	}
for (i = 1; i < SSPP_MAX; i++) {
-		if (pipe_staged[i]) {
+		if (pipe_staged[i])
  			dpu_plane_clear_multirect(pipe_staged[i]);
-
-			if (is_dpu_plane_virtual(pipe_staged[i]->plane)) {
-				DPU_ERROR(
-					"r1 only virt plane:%d not supported\n",
-					pipe_staged[i]->plane->base.id);
-				rc  = -EINVAL;
-				goto end;
-			}
-		}
  	}
z_pos = -1;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
index 09cdc3576653..8714ee767346 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -783,8 +783,7 @@ static const struct dpu_sspp_cfg *_sspp_offset(enum dpu_sspp sspp,
  }
struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
-		void __iomem *addr, struct dpu_mdss_cfg *catalog,
-		bool is_virtual_pipe)
+		void __iomem *addr, struct dpu_mdss_cfg *catalog)
  {
  	struct dpu_hw_pipe *hw_pipe;
  	const struct dpu_sspp_cfg *cfg;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
index 92b071b78fdb..1b18de957500 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.h
@@ -394,11 +394,9 @@ struct dpu_kms;
   * @idx:  Pipe index for which driver object is required
   * @addr: Mapped register io address of MDP
   * @catalog : Pointer to mdss catalog data
- * @is_virtual_pipe: is this pipe virtual pipe
   */
  struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
-		void __iomem *addr, struct dpu_mdss_cfg *catalog,
-		bool is_virtual_pipe);
+		void __iomem *addr, struct dpu_mdss_cfg *catalog);
/**
   * dpu_hw_sspp_destroy(): Destroys SSPP driver context
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 47fe11a84a77..4d2b75f3bc89 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -738,7 +738,7 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
  			  catalog->sspp[i].features & BIT(DPU_SSPP_CURSOR));
plane = dpu_plane_init(dev, catalog->sspp[i].id, type,
-				       (1UL << max_crtc_count) - 1, 0);
+				       (1UL << max_crtc_count) - 1);
  		if (IS_ERR(plane)) {
  			DPU_ERROR("dpu_plane_init failed\n");
  			ret = PTR_ERR(plane);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index ca75089c9d61..3fcc964dec0a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -89,7 +89,7 @@ enum dpu_plane_qos {
  /*
   * struct dpu_plane - local dpu plane structure
   * @aspace: address space pointer
- * @mplane_list: List of multirect planes of the same pipe
+ * @csc_ptr: Points to dpu_csc_cfg structure to use for current
   * @catalog: Points to dpu catalog structure
   * @revalidate: force revalidation of all the plane properties
   */
@@ -104,8 +104,6 @@ struct dpu_plane {
  	uint32_t color_fill;
  	bool is_error;
  	bool is_rt_pipe;
-	bool is_virtual;
-	struct list_head mplane_list;
  	struct dpu_mdss_cfg *catalog;
  };
@@ -223,7 +221,7 @@ static void _dpu_plane_calc_clk(struct drm_plane *plane, struct dpu_hw_pipe_cfg
  static int _dpu_plane_calc_fill_level(struct drm_plane *plane,
  		const struct dpu_format *fmt, u32 src_width)
  {
-	struct dpu_plane *pdpu, *tmp;
+	struct dpu_plane *pdpu;
  	struct dpu_plane_state *pstate;
  	u32 fixed_buff_size;
  	u32 total_fl;
@@ -237,19 +235,7 @@ static int _dpu_plane_calc_fill_level(struct drm_plane *plane,
  	pstate = to_dpu_plane_state(plane->state);
  	fixed_buff_size = pdpu->catalog->caps->pixel_ram_size;
- list_for_each_entry(tmp, &pdpu->mplane_list, mplane_list) {
-		u32 tmp_width;
-
-		if (!tmp->base.state->visible)
-			continue;
-		tmp_width = drm_rect_width(&tmp->base.state->src) >> 16;
-		DPU_DEBUG("plane%d/%d src_width:%d/%d\n",
-				pdpu->base.base.id, tmp->base.base.id,
-				src_width,
-				tmp_width);
-		src_width = max_t(u32, src_width,
-				  tmp_width);
-	}
+	/* FIXME: in multirect case account for the src_width of all the planes */
if (fmt->fetch_planes == DPU_PLANE_PSEUDO_PLANAR) {
  		if (fmt->chroma_sample == DPU_CHROMA_420) {
@@ -848,13 +834,8 @@ int dpu_plane_validate_multirect_v2(struct dpu_multirect_plane_states *plane)
  	}
done:
-	if (dpu_plane[R0]->is_virtual) {
-		pstate[R0]->multirect_index = DPU_SSPP_RECT_1;
-		pstate[R1]->multirect_index = DPU_SSPP_RECT_0;
-	} else {
-		pstate[R0]->multirect_index = DPU_SSPP_RECT_0;
-		pstate[R1]->multirect_index = DPU_SSPP_RECT_1;
-	}
+	pstate[R0]->multirect_index = DPU_SSPP_RECT_0;
+	pstate[R1]->multirect_index = DPU_SSPP_RECT_1;
DPU_DEBUG_PLANE(dpu_plane[R0], "R0: %d - %d\n",
  		pstate[R0]->multirect_mode, pstate[R0]->multirect_index);
@@ -1213,19 +1194,13 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane *plane)
static void _dpu_plane_atomic_disable(struct drm_plane *plane)
  {
-	struct dpu_plane *pdpu = to_dpu_plane(plane);
  	struct drm_plane_state *state = plane->state;
  	struct dpu_plane_state *pstate = to_dpu_plane_state(state);
- trace_dpu_plane_disable(DRMID(plane), is_dpu_plane_virtual(plane),
+	trace_dpu_plane_disable(DRMID(plane), false,
  				pstate->multirect_mode);
pstate->pending = true;
-
-	if (is_dpu_plane_virtual(plane) &&
-			pdpu->pipe_hw && pdpu->pipe_hw->ops.setup_multirect)
-		pdpu->pipe_hw->ops.setup_multirect(pdpu->pipe_hw,
-				DPU_SSPP_RECT_SOLO, DPU_SSPP_MULTIRECT_NONE);
  }
static void dpu_plane_atomic_update(struct drm_plane *plane,
@@ -1444,17 +1419,12 @@ enum dpu_sspp dpu_plane_pipe(struct drm_plane *plane)
  	return plane ? to_dpu_plane(plane)->pipe : SSPP_NONE;
  }
-bool is_dpu_plane_virtual(struct drm_plane *plane)
-{
-	return plane ? to_dpu_plane(plane)->is_virtual : false;
-}
-
  /* initialize plane */
  struct drm_plane *dpu_plane_init(struct drm_device *dev,
  		uint32_t pipe, enum drm_plane_type type,
-		unsigned long possible_crtcs, u32 master_plane_id)
+		unsigned long possible_crtcs)
  {
-	struct drm_plane *plane = NULL, *master_plane = NULL;
+	struct drm_plane *plane = NULL;
  	const uint32_t *format_list;
  	struct dpu_plane *pdpu;
  	struct msm_drm_private *priv = dev->dev_private;
@@ -1474,18 +1444,9 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
  	/* cache local stuff for later */
  	plane = &pdpu->base;
  	pdpu->pipe = pipe;
-	pdpu->is_virtual = (master_plane_id != 0);
-	INIT_LIST_HEAD(&pdpu->mplane_list);
-	master_plane = drm_plane_find(dev, NULL, master_plane_id);
-	if (master_plane) {
-		struct dpu_plane *mpdpu = to_dpu_plane(master_plane);
-
-		list_add_tail(&pdpu->mplane_list, &mpdpu->mplane_list);
-	}
/* initialize underlying h/w driver */
-	pdpu->pipe_hw = dpu_hw_sspp_init(pipe, kms->mmio, kms->catalog,
-							master_plane_id != 0);
+	pdpu->pipe_hw = dpu_hw_sspp_init(pipe, kms->mmio, kms->catalog);
  	if (IS_ERR(pdpu->pipe_hw)) {
  		DPU_ERROR("[%u]SSPP init failed\n", pipe);
  		ret = PTR_ERR(pdpu->pipe_hw);
@@ -1495,14 +1456,8 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
  		goto clean_sspp;
  	}
- if (pdpu->is_virtual) {
-		format_list = pdpu->pipe_hw->cap->sblk->virt_format_list;
-		num_formats = pdpu->pipe_hw->cap->sblk->virt_num_formats;
-	}
-	else {
-		format_list = pdpu->pipe_hw->cap->sblk->format_list;
-		num_formats = pdpu->pipe_hw->cap->sblk->num_formats;
-	}
+	format_list = pdpu->pipe_hw->cap->sblk->format_list;
+	num_formats = pdpu->pipe_hw->cap->sblk->num_formats;
ret = drm_universal_plane_init(dev, plane, 0xff, &dpu_plane_funcs,
  				format_list, num_formats,
@@ -1543,15 +1498,14 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
mutex_init(&pdpu->lock); - DPU_DEBUG("%s created for pipe:%u id:%u virtual:%u\n", plane->name,
-					pipe, plane->base.id, master_plane_id);
+	DPU_DEBUG("%s created for pipe:%u id:%u\n", plane->name,
+					pipe, plane->base.id);
  	return plane;
clean_sspp:
  	if (pdpu && pdpu->pipe_hw)
  		dpu_hw_sspp_destroy(pdpu->pipe_hw);
  clean_plane:
-	list_del(&pdpu->mplane_list);
  	kfree(pdpu);
  	return ERR_PTR(ret);
  }
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index 9d51dad5c6a5..d2f60810434e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -59,14 +59,6 @@ struct dpu_multirect_plane_states {
   */
  enum dpu_sspp dpu_plane_pipe(struct drm_plane *plane);
-/**
- * is_dpu_plane_virtual - check for virtual plane
- * @plane: Pointer to DRM plane object
- * returns: true - if the plane is virtual
- *          false - if the plane is primary
- */
-bool is_dpu_plane_virtual(struct drm_plane *plane);
-
  /**
   * dpu_plane_get_ctl_flush - get control flush mask
   * @plane:   Pointer to DRM plane object
@@ -94,14 +86,11 @@ void dpu_plane_set_error(struct drm_plane *plane, bool error);
   * @pipe:  dpu hardware pipe identifier
   * @type:  Plane type - PRIMARY/OVERLAY/CURSOR
   * @possible_crtcs: bitmask of crtc that can be attached to the given pipe
- * @master_plane_id: primary plane id of a multirect pipe. 0 value passed for
- *                   a regular plane initialization. A non-zero primary plane
- *                   id will be passed for a virtual pipe initialization.
   *
   */
  struct drm_plane *dpu_plane_init(struct drm_device *dev,
  		uint32_t pipe, enum drm_plane_type type,
-		unsigned long possible_crtcs, u32 master_plane_id);
+		unsigned long possible_crtcs);
/**
   * dpu_plane_validate_multirecti_v2 - validate the multirect planes



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