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* [PATCH] drm/msm/dpu: fix smart dma support
@ 2021-05-11 14:17 Dmitry Baryshkov
  0 siblings, 0 replies; only message in thread
From: Dmitry Baryshkov @ 2021-05-11 14:17 UTC (permalink / raw)
  To: Bjorn Andersson, Rob Clark, Sean Paul, Abhinav Kumar
  Cc: Jonathan Marek, Stephen Boyd, David Airlie, Daniel Vetter,
	linux-arm-msm, dri-devel, freedreno

Downstream driver uses dpu->caps->smart_dma_rev to update
sspp->cap->features with the bit corresponding to the supported SmartDMA
version. Upstream driver does not do this, resulting in SSPP subdriver
not enbaling setup_multirect callback. Make SSPP subdriver check global
smart_dma_rev to decide if setup_multirect should be enabled.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 10 +++++-----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 16 ++++++++++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c    |  9 +++++----
 3 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index b569030a0847..036334e3d99d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -157,7 +157,7 @@ static const struct dpu_caps sdm845_dpu_caps = {
 	.max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
 	.max_mixer_blendstages = 0xb,
 	.qseed_type = DPU_SSPP_SCALER_QSEED3,
-	.smart_dma_rev = DPU_SSPP_SMART_DMA_V2,
+	.smart_dma_rev = DPU_SMART_DMA_V2,
 	.ubwc_version = DPU_HW_UBWC_VER_20,
 	.has_src_split = true,
 	.has_dim_layer = true,
@@ -173,7 +173,7 @@ static const struct dpu_caps sc7180_dpu_caps = {
 	.max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
 	.max_mixer_blendstages = 0x9,
 	.qseed_type = DPU_SSPP_SCALER_QSEED4,
-	.smart_dma_rev = DPU_SSPP_SMART_DMA_V2,
+	.smart_dma_rev = DPU_SMART_DMA_V2,
 	.ubwc_version = DPU_HW_UBWC_VER_20,
 	.has_dim_layer = true,
 	.has_idle_pc = true,
@@ -185,7 +185,7 @@ static const struct dpu_caps sm8150_dpu_caps = {
 	.max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
 	.max_mixer_blendstages = 0xb,
 	.qseed_type = DPU_SSPP_SCALER_QSEED3,
-	.smart_dma_rev = DPU_SSPP_SMART_DMA_V2, /* TODO: v2.5 */
+	.smart_dma_rev = DPU_SMART_DMA_V2, /* TODO: v2.5 */
 	.ubwc_version = DPU_HW_UBWC_VER_30,
 	.has_src_split = true,
 	.has_dim_layer = true,
@@ -201,7 +201,7 @@ static const struct dpu_caps sm8250_dpu_caps = {
 	.max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
 	.max_mixer_blendstages = 0xb,
 	.qseed_type = DPU_SSPP_SCALER_QSEED3LITE,
-	.smart_dma_rev = DPU_SSPP_SMART_DMA_V2, /* TODO: v2.5 */
+	.smart_dma_rev = DPU_SMART_DMA_V2, /* TODO: v2.5 */
 	.ubwc_version = DPU_HW_UBWC_VER_40,
 	.has_src_split = true,
 	.has_dim_layer = true,
@@ -215,7 +215,7 @@ static const struct dpu_caps sc7280_dpu_caps = {
 	.max_mixer_width = DEFAULT_DPU_OUTPUT_LINE_WIDTH,
 	.max_mixer_blendstages = 0x7,
 	.qseed_type = DPU_SSPP_SCALER_QSEED4,
-	.smart_dma_rev = DPU_SSPP_SMART_DMA_V2,
+	.smart_dma_rev = DPU_SMART_DMA_V2,
 	.ubwc_version = DPU_HW_UBWC_VER_30,
 	.has_dim_layer = true,
 	.has_idle_pc = true,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
index 4dfd8a20ad5c..04ebccd92d4e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -70,6 +70,18 @@ enum {
 	DPU_HW_UBWC_VER_40 = 0x400,
 };
 
+/**
+ * SmartDMA support
+ * @DPU_SMART_DMA_UNSUPPORTED,   SmartDMA not support
+ * @DPU_SMART_DMA_V1,   SmartDMA 1.0 support
+ * @DPU_SMART_DMA_V2,   SmartDMA 2.0 support
+ */
+enum {
+	DPU_SMART_DMA_UNSUPPORTED,
+	DPU_SMART_DMA_V1,
+	DPU_SMART_DMA_V2,
+};
+
 /**
  * MDP TOP BLOCK features
  * @DPU_MDP_PANIC_PER_PIPE Panic configuration needs to be be done per pipe
@@ -104,8 +116,6 @@ enum {
  * @DPU_SSPP_QOS,            SSPP support QoS control, danger/safe/creq
  * @DPU_SSPP_QOS_8LVL,       SSPP support 8-level QoS control
  * @DPU_SSPP_EXCL_RECT,      SSPP supports exclusion rect
- * @DPU_SSPP_SMART_DMA_V1,   SmartDMA 1.0 support
- * @DPU_SSPP_SMART_DMA_V2,   SmartDMA 2.0 support
  * @DPU_SSPP_TS_PREFILL      Supports prefill with traffic shaper
  * @DPU_SSPP_TS_PREFILL_REC1 Supports prefill with traffic shaper multirec
  * @DPU_SSPP_CDP             Supports client driven prefetch
@@ -124,8 +134,6 @@ enum {
 	DPU_SSPP_QOS,
 	DPU_SSPP_QOS_8LVL,
 	DPU_SSPP_EXCL_RECT,
-	DPU_SSPP_SMART_DMA_V1,
-	DPU_SSPP_SMART_DMA_V2,
 	DPU_SSPP_TS_PREFILL,
 	DPU_SSPP_TS_PREFILL_REC1,
 	DPU_SSPP_CDP,
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 34d81aa16041..3ce4c5cd5d05 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -647,7 +647,8 @@ static void dpu_hw_sspp_setup_cdp(struct dpu_hw_pipe *ctx,
 }
 
 static void _setup_layer_ops(struct dpu_hw_pipe *c,
-		unsigned long features)
+		unsigned long features,
+		int smart_dma_rev)
 {
 	if (test_bit(DPU_SSPP_SRC, &features)) {
 		c->ops.setup_format = dpu_hw_sspp_setup_format;
@@ -668,8 +669,8 @@ static void _setup_layer_ops(struct dpu_hw_pipe *c,
 		test_bit(DPU_SSPP_CSC_10BIT, &features))
 		c->ops.setup_csc = dpu_hw_sspp_setup_csc;
 
-	if (test_bit(DPU_SSPP_SMART_DMA_V1, &c->cap->features) ||
-		test_bit(DPU_SSPP_SMART_DMA_V2, &c->cap->features))
+	if (smart_dma_rev == DPU_SMART_DMA_V1 ||
+	    smart_dma_rev == DPU_SMART_DMA_V2)
 		c->ops.setup_multirect = dpu_hw_sspp_setup_multirect;
 
 	if (test_bit(DPU_SSPP_SCALER_QSEED3, &features) ||
@@ -733,7 +734,7 @@ struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
 	hw_pipe->mdp = &catalog->mdp[0];
 	hw_pipe->idx = idx;
 	hw_pipe->cap = cfg;
-	_setup_layer_ops(hw_pipe, hw_pipe->cap->features);
+	_setup_layer_ops(hw_pipe, hw_pipe->cap->features, catalog->caps->smart_dma_rev);
 
 	dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx, &dpu_hw_ops);
 
-- 
2.30.2


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