linux-kernel - [PATCH 4/4] drm/msm/dpu: Enable compression for command mode

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Message-ID: <20230405-add-dsc-support-v1-4-6bc6f03ae735@quicinc.com>
Date:   Tue, 2 May 2023 18:19:15 -0700
From:   Jessica Zhang <quic_jesszhan@...cinc.com>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Marijn Suijten <marijn.suijten@...ainline.org>
CC:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>
Subject: [PATCH 4/4] drm/msm/dpu: Enable compression for command mode

Add a dpu_hw_intf op to enable data compression.

Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 4 ++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c          | 7 +++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h          | 2 ++
 3 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index 74470d068622..4321a1aba17f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -72,6 +72,10 @@ static void _dpu_encoder_phys_cmd_update_intf_cfg(
 				phys_enc->hw_intf,
 				true,
 				phys_enc->hw_pp->idx);
+
+	if (phys_enc->dpu_kms->catalog->caps->has_data_compress &&
+			phys_enc->hw_intf->ops.enable_compression)
+		phys_enc->hw_intf->ops.enable_compression(phys_enc->hw_intf);
 }
 
 static void dpu_encoder_phys_cmd_pp_tx_done_irq(void *arg, int irq_idx)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
index 671048a78801..4ce7ffdd7a05 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
@@ -64,10 +64,16 @@
 
 #define INTF_CFG2_DATABUS_WIDEN	BIT(0)
 #define INTF_CFG2_DATA_HCTL_EN	BIT(4)
+#define INTF_CFG2_DCE_DATA_COMPRESS	BIT(12)
 
 #define INTF_MISR_CTRL			0x180
 #define INTF_MISR_SIGNATURE		0x184
 
+static inline void dpu_hw_intf_enable_compression(struct dpu_hw_intf *ctx)
+{
+	DPU_REG_WRITE(&ctx->hw, INTF_CONFIG2, INTF_CFG2_DCE_DATA_COMPRESS);
+}
+
 static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *ctx,
 		const struct intf_timing_params *p,
 		const struct dpu_format *fmt)
@@ -325,6 +331,7 @@ static void _setup_intf_ops(struct dpu_hw_intf_ops *ops,
 		ops->bind_pingpong_blk = dpu_hw_intf_bind_pingpong_blk;
 	ops->setup_misr = dpu_hw_intf_setup_misr;
 	ops->collect_misr = dpu_hw_intf_collect_misr;
+	ops->enable_compression = dpu_hw_intf_enable_compression;
 }
 
 struct dpu_hw_intf *dpu_hw_intf_init(const struct dpu_intf_cfg *cfg,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
index 102c4f0e812b..99528c735368 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
@@ -60,6 +60,7 @@ struct intf_status {
  *                     feed pixels to this interface
  * @setup_misr: enable/disable MISR
  * @collect_misr: read MISR signature
+ * @enable_compression: Enable data compression
  */
 struct dpu_hw_intf_ops {
 	void (*setup_timing_gen)(struct dpu_hw_intf *intf,
@@ -82,6 +83,7 @@ struct dpu_hw_intf_ops {
 			const enum dpu_pingpong pp);
 	void (*setup_misr)(struct dpu_hw_intf *intf, bool enable, u32 frame_count);
 	int (*collect_misr)(struct dpu_hw_intf *intf, u32 *misr_value);
+	void (*enable_compression)(struct dpu_hw_intf *intf);
 };
 
 struct dpu_hw_intf {

-- 
2.40.1