On 09/11/2022 15:14, Kalyan Thota wrote:
Flush mechanism for DSPP blocks has changed in sc7280 family, it
allows individual sub blocks to be flushed in coordination with
master flush control.
Representation: master_flush && (PCC_flush | IGC_flush .. etc )
This change adds necessary support for the above design.
Changes in v1:
- Few nits (Doug, Dmitry)
- Restrict sub-block flush programming to dpu_hw_ctl file (Dmitry)
Changes in v2:
- Move the address offset to flush macro (Dmitry)
- Seperate ops for the sub block flush (Dmitry)
Changes in v3:
- Reuse the DPU_DSPP_xx enum instead of a new one (Dmitry)
Changes in v4:
- Use shorter version for unsigned int (Stephen)
Changes in v5:
- Spurious patch please ignore.
Changes in v6:
- Add SOB tag (Doug, Dmitry)
Changes in v7:
- Cache flush mask per dspp (Dmitry)
- Few nits (Marijn)
Changes in v8:
- Few nits (Marijn)
Signed-off-by: Kalyan Thota <quic_kalyant@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 5 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 12 +++--
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 66 +++++++++++++++++++++-----
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h | 7 ++-
5 files changed, 72 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 601d687..4170fbe 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -766,7 +766,7 @@ static void _dpu_crtc_setup_cp_blocks(struct drm_crtc *crtc)
/* stage config flush mask */
ctl->ops.update_pending_flush_dspp(ctl,
- mixer[i].hw_dspp->idx);
+ mixer[i].hw_dspp->idx, DPU_DSPP_PCC);
}
}
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 27f029f..0eecb2f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -65,7 +65,10 @@
(PINGPONG_SDM845_MASK | BIT(DPU_PINGPONG_TE2))
#define CTL_SC7280_MASK \
- (BIT(DPU_CTL_ACTIVE_CFG) | BIT(DPU_CTL_FETCH_ACTIVE) | BIT(DPU_CTL_VM_CFG))
+ (BIT(DPU_CTL_ACTIVE_CFG) | \
+ BIT(DPU_CTL_FETCH_ACTIVE) | \
+ BIT(DPU_CTL_VM_CFG) | \
+ BIT(DPU_CTL_DSPP_SUB_BLOCK_FLUSH))
#define MERGE_3D_SM8150_MASK (0)
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 38aa38a..35f4810 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -161,10 +161,12 @@ enum {
* DSPP sub-blocks
* @DPU_DSPP_PCC Panel color correction block
* @DPU_DSPP_GC Gamma correction block
+ * @DPU_DSPP_IGC Inverse gamma correction block
*/
enum {
DPU_DSPP_PCC = 0x1,
DPU_DSPP_GC,
+ DPU_DSPP_IGC,
DPU_DSPP_MAX
};
@@ -188,16 +190,18 @@ enum {
/**
* CTL sub-blocks
- * @DPU_CTL_SPLIT_DISPLAY: CTL supports video mode split display
- * @DPU_CTL_FETCH_ACTIVE: Active CTL for fetch HW (SSPPs)
- * @DPU_CTL_VM_CFG: CTL config to support multiple VMs
- * @DPU_CTL_MAX
+ * @DPU_CTL_SPLIT_DISPLAY CTL supports video mode split display
+ * @DPU_CTL_FETCH_ACTIVE Active CTL for fetch HW (SSPPs)
+ * @DPU_CTL_VM_CFG CTL config to support multiple VMs
+ * @DPU_CTL_DSPP_BLOCK_FLUSH CTL config to support dspp sub-block flush
+ * @DPU_CTL_MAX Maximum value
No unnecessary whitespace changes please.
*/
enum {
DPU_CTL_SPLIT_DISPLAY = 0x1,
DPU_CTL_ACTIVE_CFG,
DPU_CTL_FETCH_ACTIVE,
DPU_CTL_VM_CFG,
+ DPU_CTL_DSPP_SUB_BLOCK_FLUSH,
DPU_CTL_MAX
};
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index a35ecb6..29821ea 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -28,22 +28,23 @@
#define CTL_INTF_ACTIVE 0x0F4
#define CTL_MERGE_3D_FLUSH 0x100
#define CTL_DSC_ACTIVE 0x0E8
-#define CTL_DSC_FLUSH 0x104
+#define CTL_DSC_FLUSH 0x104
#define CTL_WB_FLUSH 0x108
#define CTL_INTF_FLUSH 0x110
#define CTL_INTF_MASTER 0x134
#define CTL_FETCH_PIPE_ACTIVE 0x0FC
+#define CTL_DSPP_n_FLUSH(n) ((0x13C) + ((n) * 4))
-#define CTL_MIXER_BORDER_OUT BIT(24)
-#define CTL_FLUSH_MASK_CTL BIT(17)
+#define CTL_MIXER_BORDER_OUT BIT(24)
+#define CTL_FLUSH_MASK_CTL BIT(17)
-#define DPU_REG_RESET_TIMEOUT_US 2000
-#define MERGE_3D_IDX 23
-#define DSC_IDX 22
-#define INTF_IDX 31
-#define WB_IDX 16
-#define CTL_INVALID_BIT 0xffff
-#define CTL_DEFAULT_GROUP_ID 0xf
+#define DPU_REG_RESET_TIMEOUT_US 2000
+#define MERGE_3D_IDX 23
+#define DSC_IDX 22
+#define INTF_IDX 31
+#define WB_IDX 16
+#define CTL_INVALID_BIT 0xffff
+#define CTL_DEFAULT_GROUP_ID 0xf
static const u32 fetch_tbl[SSPP_MAX] = {CTL_INVALID_BIT, 16, 17, 18, 19,
CTL_INVALID_BIT, CTL_INVALID_BIT, CTL_INVALID_BIT, CTL_INVALID_BIT, 0,
@@ -110,9 +111,14 @@ static inline void dpu_hw_ctl_trigger_pending(struct dpu_hw_ctl *ctx)
static inline void dpu_hw_ctl_clear_pending_flush(struct dpu_hw_ctl *ctx)
{
+ int i;
+
trace_dpu_hw_ctl_clear_pending_flush(ctx->pending_flush_mask,
dpu_hw_ctl_get_flush_register(ctx));
ctx->pending_flush_mask = 0x0;
+
+ for(i = 0; i < ARRAY_SIZE(ctx->pending_dspp_flush_mask); i++)
+ ctx->pending_dspp_flush_mask[i] = 0x0;
memset(ctx->pending_dspp_flush_mask, 0,
sizeof(ctx->pending_dspp_flush_mask)); ?
}
static inline void dpu_hw_ctl_update_pending_flush(struct dpu_hw_ctl *ctx,
@@ -130,6 +136,8 @@ static u32 dpu_hw_ctl_get_pending_flush(struct dpu_hw_ctl *ctx)
static inline void dpu_hw_ctl_trigger_flush_v1(struct dpu_hw_ctl *ctx)
{
+ int i;
+
if (ctx->pending_flush_mask & BIT(MERGE_3D_IDX))
DPU_REG_WRITE(&ctx->hw, CTL_MERGE_3D_FLUSH,
ctx->pending_merge_3d_flush_mask);
@@ -140,6 +148,11 @@ static inline void dpu_hw_ctl_trigger_flush_v1(struct dpu_hw_ctl *ctx)
DPU_REG_WRITE(&ctx->hw, CTL_WB_FLUSH,
ctx->pending_wb_flush_mask);
+ for(i = 0; i < ARRAY_SIZE(ctx->pending_dspp_flush_mask); i++)
+ if (ctx->pending_dspp_flush_mask[i])
+ DPU_REG_WRITE(&ctx->hw, CTL_DSPP_n_FLUSH(i),
+ ctx->pending_dspp_flush_mask[i]);
+
I'm somewhat biased towards:
for (dspp = DSPP_0; dspp < DSPP_MAX; dspp++)
if (ctx->pending_dspp_flush_mask[dspp - DSPP_0]
DPU_REG_WRITE(&ctx->hw, CTL_DSPP_n_FLUSH(dspp),
ctx->pending_dspp_flush_mask[dspp]);
WDYT? Yes, you'd have to adjust CTL_DSPP_n_FLUSH to subtract DSPP_0 from
the passed value.
DPU_REG_WRITE(&ctx->hw, CTL_FLUSH, ctx->pending_flush_mask);
}
@@ -287,8 +300,9 @@ static void dpu_hw_ctl_update_pending_flush_merge_3d_v1(struct dpu_hw_ctl *ctx,
}
static void dpu_hw_ctl_update_pending_flush_dspp(struct dpu_hw_ctl *ctx,
- enum dpu_dspp dspp)
+ enum dpu_dspp dspp, u32 dspp_sub_blk)
{
+
switch (dspp) {
case DSPP_0:
ctx->pending_flush_mask |= BIT(13);
@@ -307,6 +321,30 @@ static void dpu_hw_ctl_update_pending_flush_dspp(struct dpu_hw_ctl *ctx,
}
}
+static void dpu_hw_ctl_update_pending_flush_dspp_subblocks(
+ struct dpu_hw_ctl *ctx, enum dpu_dspp dspp, u32 dspp_sub_blk)
+{
+
+ if (dspp >= DSPP_MAX)
+ return;
+
+ switch (dspp_sub_blk) {
+ case DPU_DSPP_IGC:
+ ctx->pending_dspp_flush_mask[dspp - DSPP_0] |= BIT(2);
+ break;
+ case DPU_DSPP_PCC:
+ ctx->pending_dspp_flush_mask[dspp - DSPP_0] |= BIT(4);
+ break;
+ case DPU_DSPP_GC:
+ ctx->pending_dspp_flush_mask[dspp - DSPP_0] |= BIT(5);
+ break;
+ default:
+ return;
+ }
+
+ ctx->pending_flush_mask |= BIT(29);
+}
+
static u32 dpu_hw_ctl_poll_reset_status(struct dpu_hw_ctl *ctx, u32 timeout_us)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
@@ -675,7 +713,11 @@ static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
ops->setup_blendstage = dpu_hw_ctl_setup_blendstage;
ops->update_pending_flush_sspp = dpu_hw_ctl_update_pending_flush_sspp;
ops->update_pending_flush_mixer = dpu_hw_ctl_update_pending_flush_mixer;
- ops->update_pending_flush_dspp = dpu_hw_ctl_update_pending_flush_dspp;
+ if (cap & BIT(DPU_CTL_DSPP_SUB_BLOCK_FLUSH))
+ ops->update_pending_flush_dspp = dpu_hw_ctl_update_pending_flush_dspp_subblocks;
+ else
+ ops->update_pending_flush_dspp = dpu_hw_ctl_update_pending_flush_dspp;
+
if (cap & BIT(DPU_CTL_FETCH_ACTIVE))
ops->set_active_pipes = dpu_hw_ctl_set_fetch_pipe_active;
};
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
index 96c012e..ff4e92c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
@@ -148,13 +148,15 @@ struct dpu_hw_ctl_ops {
enum dpu_lm blk);
/**
- * OR in the given flushbits to the cached pending_flush_mask
+ * OR in the given flushbits to the cached pending_dspp_flush_mask
The existence of pending_dspp_flush is a detail. For earlier revisions
there is no such mask. Thus I'd suggest leaving the comment intact.
* No effect on hardware
* @ctx : ctl path ctx pointer
* @blk : DSPP block index
+ * @dspp_sub_blk : DSPP sub-block index
*/
void (*update_pending_flush_dspp)(struct dpu_hw_ctl *ctx,
- enum dpu_dspp blk);
+ enum dpu_dspp blk, u32 dspp_sub_blk);
+
/**
* Write the value of the pending_flush_mask to hardware
* @ctx : ctl path ctx pointer
@@ -242,6 +244,7 @@ struct dpu_hw_ctl {
u32 pending_intf_flush_mask;
u32 pending_wb_flush_mask;
u32 pending_merge_3d_flush_mask;
+ u32 pending_dspp_flush_mask[DSPP_MAX - DSPP_0];
/* ops */
struct dpu_hw_ctl_ops ops;
--
With best wishes
Dmitry
