linux-kernel - [PATCH v5 06/13] drm/msm/disp/dpu1: Add DSC support in hw

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Message-Id: <20220325110556.275490-7-vkoul@kernel.org>
Date:   Fri, 25 Mar 2022 16:35:49 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org,
        Abhinav Kumar <quic_abhinavk@...cinc.com>
Subject: [PATCH v5 06/13] drm/msm/disp/dpu1: Add DSC support in hw_ctl

Later gens of hardware have DSC bits moved to hw_ctl, so configure these
bits so that DSC would work there as well

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 11 ++++++++++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h |  2 ++
 2 files changed, 12 insertions(+), 1 deletion(-)

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 02da9ecf71f1..cba94aa9fdcc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -25,6 +25,8 @@
 #define   CTL_MERGE_3D_ACTIVE           0x0E4
 #define   CTL_INTF_ACTIVE               0x0F4
 #define   CTL_MERGE_3D_FLUSH            0x100
+#define   CTL_DSC_ACTIVE                0x0E8
+#define   CTL_DSC_FLUSH                0x104
 #define   CTL_INTF_FLUSH                0x110
 #define   CTL_INTF_MASTER               0x134
 #define   CTL_FETCH_PIPE_ACTIVE         0x0FC
@@ -34,6 +36,7 @@
 
 #define DPU_REG_RESET_TIMEOUT_US        2000
 #define  MERGE_3D_IDX   23
+#define  DSC_IDX        22
 #define  INTF_IDX       31
 #define CTL_INVALID_BIT                 0xffff
 #define CTL_DEFAULT_GROUP_ID		0xf
@@ -121,7 +124,6 @@ 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)
 {
-
 	if (ctx->pending_flush_mask & BIT(MERGE_3D_IDX))
 		DPU_REG_WRITE(&ctx->hw, CTL_MERGE_3D_FLUSH,
 				ctx->pending_merge_3d_flush_mask);
@@ -506,6 +508,9 @@ static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 	if ((test_bit(DPU_CTL_VM_CFG, &ctx->caps->features)))
 		mode_sel = CTL_DEFAULT_GROUP_ID  << 28;
 
+	if (cfg->dsc)
+		DPU_REG_WRITE(&ctx->hw, CTL_DSC_FLUSH, cfg->dsc);
+
 	if (cfg->intf_mode_sel == DPU_CTL_MODE_SEL_CMD)
 		mode_sel |= BIT(17);
 
@@ -517,6 +522,10 @@ static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 	if (cfg->merge_3d)
 		DPU_REG_WRITE(c, CTL_MERGE_3D_ACTIVE,
 			      BIT(cfg->merge_3d - MERGE_3D_0));
+	if (cfg->dsc) {
+		DPU_REG_WRITE(&ctx->hw, CTL_FLUSH, DSC_IDX);
+		DPU_REG_WRITE(c, CTL_DSC_ACTIVE, cfg->dsc);
+	}
 }
 
 static void dpu_hw_ctl_intf_cfg(struct dpu_hw_ctl *ctx,
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 806c171e5df2..75db89f66abd 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
@@ -40,6 +40,7 @@ struct dpu_hw_stage_cfg {
  * @merge_3d:              3d merge block used
  * @intf_mode_sel:         Interface mode, cmd / vid
  * @stream_sel:            Stream selection for multi-stream interfaces
+ * @dsc:                   DSC BIT masks used
  */
 struct dpu_hw_intf_cfg {
 	enum dpu_intf intf;
@@ -47,6 +48,7 @@ struct dpu_hw_intf_cfg {
 	enum dpu_merge_3d merge_3d;
 	enum dpu_ctl_mode_sel intf_mode_sel;
 	int stream_sel;
+	unsigned int dsc;
 };
 
 /**
-- 
2.34.1