drm/msm/dpu: simplify interface flush handling

Instead of calling 4 callbacks to set pending masks, call just one to
update both pending_flush_mask and pending_intf_flush mask. Note, that
CMD mode support incorrectly did not update pending_intf_flush mask,
breaking CMD support on SC7180/SM8x50.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c

@@ -437,7 +437,6 @@ static void dpu_encoder_phys_cmd_enable_helper(
 		struct dpu_encoder_phys *phys_enc)
 {
 	struct dpu_hw_ctl *ctl;
-	u32 flush_mask = 0;
 
 	if (!phys_enc->hw_pp) {
 		DPU_ERROR("invalid arg(s), encoder %d\n", phys_enc != NULL);
@@ -452,8 +451,7 @@ static void dpu_encoder_phys_cmd_enable_helper(
 		return;
 
 	ctl = phys_enc->hw_ctl;
-	ctl->ops.get_bitmask_intf(ctl, &flush_mask, phys_enc->intf_idx);
-	ctl->ops.update_pending_flush(ctl, flush_mask);
+	ctl->ops.update_pending_flush_intf(ctl, phys_enc->intf_idx);
 }
 
 static void dpu_encoder_phys_cmd_enable(struct dpu_encoder_phys *phys_enc)

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c

@@ -429,8 +429,6 @@ static int dpu_encoder_phys_vid_control_vblank_irq(
 static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
 {
 	struct dpu_hw_ctl *ctl;
-	u32 flush_mask = 0;
-	u32 intf_flush_mask = 0;
 
 	ctl = phys_enc->hw_ctl;
 
@@ -452,20 +450,12 @@ static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
 		!dpu_encoder_phys_vid_is_master(phys_enc))
 		goto skip_flush;
 
-	ctl->ops.get_bitmask_intf(ctl, &flush_mask, phys_enc->hw_intf->idx);
-	ctl->ops.update_pending_flush(ctl, flush_mask);
-
-	if (ctl->ops.get_bitmask_active_intf)
-		ctl->ops.get_bitmask_active_intf(ctl, &intf_flush_mask,
-			phys_enc->hw_intf->idx);
-
-	if (ctl->ops.update_pending_intf_flush)
-		ctl->ops.update_pending_intf_flush(ctl, intf_flush_mask);
+	ctl->ops.update_pending_flush_intf(ctl, phys_enc->hw_intf->idx);
 
 skip_flush:
 	DPU_DEBUG_VIDENC(phys_enc,
-		"update pending flush ctl %d flush_mask 0%x intf_mask 0x%x\n",
-		ctl->idx - CTL_0, flush_mask, intf_flush_mask);
+		"update pending flush ctl %d intf %d\n",
+		ctl->idx - CTL_0, phys_enc->hw_intf->idx);
 
 
 	/* ctl_flush & timing engine enable will be triggered by framework */

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c

@@ -104,12 +104,6 @@ static inline void dpu_hw_ctl_update_pending_flush(struct dpu_hw_ctl *ctx,
 	ctx->pending_flush_mask |= flushbits;
 }
 
-static inline void dpu_hw_ctl_update_pending_intf_flush(struct dpu_hw_ctl *ctx,
-		u32 flushbits)
-{
-	ctx->pending_intf_flush_mask |= flushbits;
-}
-
 static u32 dpu_hw_ctl_get_pending_flush(struct dpu_hw_ctl *ctx)
 {
 	return ctx->pending_flush_mask;
@@ -220,40 +214,32 @@ static uint32_t dpu_hw_ctl_get_bitmask_mixer(struct dpu_hw_ctl *ctx,
 	return flushbits;
 }
 
-static int dpu_hw_ctl_get_bitmask_intf(struct dpu_hw_ctl *ctx,
-		u32 *flushbits, enum dpu_intf intf)
+static void dpu_hw_ctl_update_pending_flush_intf(struct dpu_hw_ctl *ctx,
+		enum dpu_intf intf)
 {
 	switch (intf) {
 	case INTF_0:
-		*flushbits |= BIT(31);
+		ctx->pending_flush_mask |= BIT(31);
 		break;
 	case INTF_1:
-		*flushbits |= BIT(30);
+		ctx->pending_flush_mask |= BIT(30);
 		break;
 	case INTF_2:
-		*flushbits |= BIT(29);
+		ctx->pending_flush_mask |= BIT(29);
 		break;
 	case INTF_3:
-		*flushbits |= BIT(28);
+		ctx->pending_flush_mask |= BIT(28);
 		break;
 	default:
-		return -EINVAL;
+		break;
 	}
-	return 0;
-}
-
-static int dpu_hw_ctl_get_bitmask_intf_v1(struct dpu_hw_ctl *ctx,
-		u32 *flushbits, enum dpu_intf intf)
-{
-	*flushbits |= BIT(31);
-	return 0;
 }
 
-static int dpu_hw_ctl_active_get_bitmask_intf(struct dpu_hw_ctl *ctx,
-		u32 *flushbits, enum dpu_intf intf)
+static void dpu_hw_ctl_update_pending_flush_intf_v1(struct dpu_hw_ctl *ctx,
+		enum dpu_intf intf)
 {
-	*flushbits |= BIT(intf - INTF_0);
-	return 0;
+	ctx->pending_intf_flush_mask |= BIT(intf - INTF_0);
+	ctx->pending_flush_mask |= BIT(INTF_IDX);
 }
 
 static uint32_t dpu_hw_ctl_get_bitmask_dspp(struct dpu_hw_ctl *ctx,
@@ -535,15 +521,13 @@ static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
 	if (cap & BIT(DPU_CTL_ACTIVE_CFG)) {
 		ops->trigger_flush = dpu_hw_ctl_trigger_flush_v1;
 		ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg_v1;
-		ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf_v1;
-		ops->get_bitmask_active_intf =
-			dpu_hw_ctl_active_get_bitmask_intf;
-		ops->update_pending_intf_flush =
-			dpu_hw_ctl_update_pending_intf_flush;
+		ops->update_pending_flush_intf =
+			dpu_hw_ctl_update_pending_flush_intf_v1;
 	} else {
 		ops->trigger_flush = dpu_hw_ctl_trigger_flush;
 		ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg;
-		ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf;
+		ops->update_pending_flush_intf =
+			dpu_hw_ctl_update_pending_flush_intf;
 	}
 	ops->clear_pending_flush = dpu_hw_ctl_clear_pending_flush;
 	ops->update_pending_flush = dpu_hw_ctl_update_pending_flush;

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h

@@ -91,13 +91,13 @@ struct dpu_hw_ctl_ops {
 		u32 flushbits);
 
 	/**
-	 * OR in the given flushbits to the cached pending_intf_flush_mask
+	 * OR in the given flushbits to the cached pending_(intf_)flush_mask
 	 * No effect on hardware
 	 * @ctx       : ctl path ctx pointer
-	 * @flushbits : module flushmask
+	 * @blk       : interface block index
 	 */
-	void (*update_pending_intf_flush)(struct dpu_hw_ctl *ctx,
-		u32 flushbits);
+	void (*update_pending_flush_intf)(struct dpu_hw_ctl *ctx,
+		enum dpu_intf blk);
 
 	/**
 	 * Write the value of the pending_flush_mask to hardware
@@ -142,23 +142,6 @@ struct dpu_hw_ctl_ops {
 	uint32_t (*get_bitmask_dspp)(struct dpu_hw_ctl *ctx,
 		enum dpu_dspp blk);
 
-	/**
-	 * Query the value of the intf flush mask
-	 * No effect on hardware
-	 * @ctx       : ctl path ctx pointer
-	 */
-	int (*get_bitmask_intf)(struct dpu_hw_ctl *ctx,
-		u32 *flushbits,
-		enum dpu_intf blk);
-
-	/**
-	 * Query the value of the intf active flush mask
-	 * No effect on hardware
-	 * @ctx       : ctl path ctx pointer
-	 */
-	int (*get_bitmask_active_intf)(struct dpu_hw_ctl *ctx,
-		u32 *flushbits, enum dpu_intf blk);
-
 	/**
 	 * Set all blend stages to disabled
 	 * @ctx       : ctl path ctx pointer