[PATCH v14 00/10] add DSC 1.2 dpu supports

[PATCH v14 00/10] add DSC 1.2 dpu supports

[Kuogee Hsieh]

This series adds the DPU side changes to support DSC 1.2 encoder. This
was validated with both DSI DSC 1.2 panel and DP DSC 1.2 monitor.
The DSI and DP parts will be pushed later on top of this change.
This seriel is rebase on [1], [2] and catalog fixes from rev-4 of [3].

[1]: https://patchwork.freedesktop.org/series/116851/
[2]: https://patchwork.freedesktop.org/series/116615/
[3]: https://patchwork.freedesktop.org/series/112332/

Abhinav Kumar (2):
  drm/msm/dpu: add DSC blocks to the catalog of MSM8998 and SC8180X
  drm/msm/dpu: add DSC 1.2 hw blocks for relevant chipsets

Kuogee Hsieh (8):
  drm/msm/dpu: set DSC flush bit correctly at MDP CTL flush register
  drm/msm/dpu: add DPU_PINGPONG_DSC feature bit for DPU < 7.0.0
  drm/msm/dpu: Guard PINGPONG DSC ops behind DPU_PINGPONG_DSC bit
  drm/msm/dpu: Introduce PINGPONG_NONE to disconnect DSC from PINGPONG
  drm/msm/dpu: add support for DSC encoder v1.2 engine
  drm/msm/dpu: always clear every individual pending flush mask
  drm/msm/dpu: separate DSC flush update out of interface
  drm/msm/dpu: Tear down DSC datapath on encoder cleanup

 drivers/gpu/drm/msm/Makefile                       |   1 +
 .../drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h    |   7 +
 .../drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h    |  11 +
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h |  14 +
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h |   7 +
 .../drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h   |  16 +
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h |  14 +
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h |  14 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c        |  51 ++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c     |  24 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h     |  35 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c         |  33 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h         |  11 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c         |  14 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h         |  15 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c     | 387 +++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h        |   3 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c    |   9 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c             |   7 +-
 19 files changed, 644 insertions(+), 29 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c

-- 
2.7.4

[PATCH v14 01/10] drm/msm/dpu: set DSC flush bit correctly at MDP CTL flush register

[Kuogee Hsieh]

The CTL_FLUSH register should be programmed with the 22th bit
(DSC_IDX) to flush the DSC hardware blocks, not the literal value of
22 (which corresponds to flushing VIG1, VIG2 and RGB1 instead).

Changes in V12:
-- split this patch out of "separate DSC flush update out of interface"

Changes in V13:
-- rewording the commit text

Changes in V14:
-- drop 'DSC" from "The DSC CTL_FLUSH register" at commit text

Fixes: 77f6da90487c ("drm/msm/disp/dpu1: Add DSC support in hw_ctl")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 2 +-
 1 file changed, 1 insertion(+), 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 4f7cfa9..69d0ea2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -525,7 +525,7 @@ static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 		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(&ctx->hw, CTL_FLUSH, BIT(DSC_IDX));
 		DPU_REG_WRITE(c, CTL_DSC_ACTIVE, cfg->dsc);
 	}
 }
-- 
2.7.4

[PATCH v14 02/10] drm/msm/dpu: add DSC blocks to the catalog of MSM8998 and SC8180X

[Kuogee Hsieh]

From: Abhinav Kumar <quic_abhinavk@quicinc.com>

Some platforms have DSC blocks which have not been declared in the catalog.
Complete DSC 1.1 support for all platforms by adding the missing blocks to
MSM8998 and SC8180X.

Changes in v9:
-- add MSM8998 and SC8180x to commit title

Changes in v10:
-- fix grammar at commit text

Changes in v12:
-- fix "titil" with "title" at changes in v9

Changes in v14:
-- "dsc" tp "DSC" at commit title

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h |  7 +++++++
 drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h | 11 +++++++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h
index c0dd477..521cfd5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h
@@ -126,6 +126,11 @@ static const struct dpu_pingpong_cfg msm8998_pp[] = {
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 15)),
 };
 
+static const struct dpu_dsc_cfg msm8998_dsc[] = {
+	DSC_BLK("dsc_0", DSC_0, 0x80000, 0),
+	DSC_BLK("dsc_1", DSC_1, 0x80400, 0),
+};
+
 static const struct dpu_dspp_cfg msm8998_dspp[] = {
 	DSPP_BLK("dspp_0", DSPP_0, 0x54000, DSPP_MSM8998_MASK,
 		 &msm8998_dspp_sblk),
@@ -199,6 +204,8 @@ const struct dpu_mdss_cfg dpu_msm8998_cfg = {
 	.dspp = msm8998_dspp,
 	.pingpong_count = ARRAY_SIZE(msm8998_pp),
 	.pingpong = msm8998_pp,
+	.dsc_count = ARRAY_SIZE(msm8998_dsc),
+	.dsc = msm8998_dsc,
 	.intf_count = ARRAY_SIZE(msm8998_intf),
 	.intf = msm8998_intf,
 	.vbif_count = ARRAY_SIZE(msm8998_vbif),
diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h
index e8057a1..fec1665 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h
@@ -142,6 +142,15 @@ static const struct dpu_merge_3d_cfg sc8180x_merge_3d[] = {
 	MERGE_3D_BLK("merge_3d_2", MERGE_3D_2, 0x83200),
 };
 
+static const struct dpu_dsc_cfg sc8180x_dsc[] = {
+	DSC_BLK("dsc_0", DSC_0, 0x80000, BIT(DPU_DSC_OUTPUT_CTRL)),
+	DSC_BLK("dsc_1", DSC_1, 0x80400, BIT(DPU_DSC_OUTPUT_CTRL)),
+	DSC_BLK("dsc_2", DSC_2, 0x80800, BIT(DPU_DSC_OUTPUT_CTRL)),
+	DSC_BLK("dsc_3", DSC_3, 0x80c00, BIT(DPU_DSC_OUTPUT_CTRL)),
+	DSC_BLK("dsc_4", DSC_4, 0x81000, BIT(DPU_DSC_OUTPUT_CTRL)),
+	DSC_BLK("dsc_5", DSC_5, 0x81400, BIT(DPU_DSC_OUTPUT_CTRL)),
+};
+
 static const struct dpu_intf_cfg sc8180x_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x6a000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7180_MASK,
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
@@ -206,6 +215,8 @@ const struct dpu_mdss_cfg dpu_sc8180x_cfg = {
 	.mixer = sc8180x_lm,
 	.pingpong_count = ARRAY_SIZE(sc8180x_pp),
 	.pingpong = sc8180x_pp,
+	.dsc_count = ARRAY_SIZE(sc8180x_dsc),
+	.dsc = sc8180x_dsc,
 	.merge_3d_count = ARRAY_SIZE(sc8180x_merge_3d),
 	.merge_3d = sc8180x_merge_3d,
 	.intf_count = ARRAY_SIZE(sc8180x_intf),
-- 
2.7.4

Re: [PATCH v14 02/10] drm/msm/dpu: add DSC blocks to the catalog of MSM8998 and SC8180X

[Dmitry Baryshkov]

On 25/05/2023 20:40, Kuogee Hsieh wrote:
> From: Abhinav Kumar <quic_abhinavk@quicinc.com>
> 
> Some platforms have DSC blocks which have not been declared in the catalog.
> Complete DSC 1.1 support for all platforms by adding the missing blocks to
> MSM8998 and SC8180X.
> 
> Changes in v9:
> -- add MSM8998 and SC8180x to commit title
> 
> Changes in v10:
> -- fix grammar at commit text
> 
> Changes in v12:
> -- fix "titil" with "title" at changes in v9
> 
> Changes in v14:
> -- "dsc" tp "DSC" at commit title
> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_3_0_msm8998.h |  7 +++++++
>   drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h | 11 +++++++++++
>   2 files changed, 18 insertions(+)

The sc8180x changes conflict with the patch at [1], which is already 
applied.

[1] https://patchwork.freedesktop.org/patch/531490/

-- 
With best wishes
Dmitry

[PATCH v14 03/10] drm/msm/dpu: add DPU_PINGPONG_DSC feature bit for DPU < 7.0.0

[Kuogee Hsieh]

DPU < 7.0.0 requires the PINGPONG block to be involved during
DSC setting up. Since DPU >= 7.0.0, enabling and starting the DSC
encoder engine was moved to INTF with the help of the flush mechanism.
Add a DPU_PINGPONG_DSC feature bit to restrict the availability of
dpu_hw_pp_setup_dsc() and dpu_hw_pp_dsc_{enable,disable}() on the
PINGPONG block to DPU < 7.0.0 hardware, as the registers are not
available on DPU 7.0.0 and higher anymore.
Add DPU_PINGPONG_DSC to PINGPONG_SDM845_MASK, PINGPONG_SDM845_TE2_MASK
and PINGPONG_SM8150_MASK which is used for all DPU < 7.0 chipsets.

changes in v6:
-- split patches and rearrange to keep catalog related files at this patch

changes in v7:
-- rewording commit text as suggested at review comments

changes in v9:
-- delete BIT(DPU_PINGPONG_DSC) from PINGPONG_SDM845_TE2_MASK

changes in v10:
-- correct order of commit text

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 4 ++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 4 +++-
 2 files changed, 5 insertions(+), 3 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 82b58c6..f2a1535 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -76,13 +76,13 @@
 	(BIT(DPU_DIM_LAYER) | BIT(DPU_MIXER_COMBINED_ALPHA))
 
 #define PINGPONG_SDM845_MASK \
-	(BIT(DPU_PINGPONG_DITHER) | BIT(DPU_PINGPONG_TE))
+	(BIT(DPU_PINGPONG_DITHER) | BIT(DPU_PINGPONG_TE) | BIT(DPU_PINGPONG_DSC))
 
 #define PINGPONG_SDM845_TE2_MASK \
 	(PINGPONG_SDM845_MASK | BIT(DPU_PINGPONG_TE2))
 
 #define PINGPONG_SM8150_MASK \
-	(BIT(DPU_PINGPONG_DITHER))
+	(BIT(DPU_PINGPONG_DITHER) | BIT(DPU_PINGPONG_DSC))
 
 #define CTL_SC7280_MASK \
 	(BIT(DPU_CTL_ACTIVE_CFG) | \
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 6ee48f0..83854e8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -144,7 +144,8 @@ enum {
  * @DPU_PINGPONG_TE2        Additional tear check block for split pipes
  * @DPU_PINGPONG_SPLIT      PP block supports split fifo
  * @DPU_PINGPONG_SLAVE      PP block is a suitable slave for split fifo
- * @DPU_PINGPONG_DITHER,    Dither blocks
+ * @DPU_PINGPONG_DITHER     Dither blocks
+ * @DPU_PINGPONG_DSC        PP block supports DSC
  * @DPU_PINGPONG_MAX
  */
 enum {
@@ -153,6 +154,7 @@ enum {
 	DPU_PINGPONG_SPLIT,
 	DPU_PINGPONG_SLAVE,
 	DPU_PINGPONG_DITHER,
+	DPU_PINGPONG_DSC,
 	DPU_PINGPONG_MAX
 };
 
-- 
2.7.4

[PATCH v14 04/10] drm/msm/dpu: Guard PINGPONG DSC ops behind DPU_PINGPONG_DSC bit

[Kuogee Hsieh]

DPU < 7.0.0 has DPU_PINGPONG_DSC feature bit set to indicate it requires
both dpu_hw_pp_setup_dsc() and dpu_hw_pp_dsc_{enable,disable}() to be
executed to complete DSC configuration if DSC hardware block is present.
Hence test DPU_PINGPONG_DSC feature bit and assign DSC related functions
to the ops of PINGPONG block accordingly if DPU_PINGPONG_DSC bit is set.

Changes in v6:
-- split patches, this patch has function handles DPU_PINGPONG_DSC bit

Changes in v9:
-- the original code of assigning dsc related functions to the ops of
   pingpong block without testing the DPU_PINGPONG_DSC feature bit was
   restored back due to rebase error which defeat the purpose of this
   patch. Remove those error code.

Changes in v10:
-- change commit title
-- correct texts at changes in v9

Changes in v12:
-- fixed length too long at Changes in v9

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
index 79e4576..437d9e6 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
@@ -291,9 +291,12 @@ static void _setup_pingpong_ops(struct dpu_hw_pingpong *c,
 		c->ops.get_line_count = dpu_hw_pp_get_line_count;
 		c->ops.disable_autorefresh = dpu_hw_pp_disable_autorefresh;
 	}
-	c->ops.setup_dsc = dpu_hw_pp_setup_dsc;
-	c->ops.enable_dsc = dpu_hw_pp_dsc_enable;
-	c->ops.disable_dsc = dpu_hw_pp_dsc_disable;
+
+	if (test_bit(DPU_PINGPONG_DSC, &features)) {
+		c->ops.setup_dsc = dpu_hw_pp_setup_dsc;
+		c->ops.enable_dsc = dpu_hw_pp_dsc_enable;
+		c->ops.disable_dsc = dpu_hw_pp_dsc_disable;
+	}
 
 	if (test_bit(DPU_PINGPONG_DITHER, &features))
 		c->ops.setup_dither = dpu_hw_pp_setup_dither;
-- 
2.7.4

[PATCH v14 05/10] drm/msm/dpu: Introduce PINGPONG_NONE to disconnect DSC from PINGPONG

[Kuogee Hsieh]

Disabling the crossbar mux between DSC and PINGPONG currently
requires a bogus enum dpu_pingpong value to be passed when calling
dsc_bind_pingpong_blk() with enable=false, even though the register
value written is independent of the current PINGPONG block.  Replace
that `bool enable` parameter with a new PINGPONG_NONE dpu_pingpong
flag that triggers the write of the "special" 0xF "crossbar
disabled" value to the register instead.

Changes in v4:
-- more details to commit text

Changes in v5:
-- rewording commit text suggested by Marijn
-- add DRM_DEBUG_KMS for DSC unbinding case

Changes in v8:
-- fix checkpatch warning

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c |  2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c  | 14 +++++++-------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h  |  1 -
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h |  3 ++-
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index cf1de5d..ffa6f04 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1850,7 +1850,7 @@ static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_dsc *hw_dsc,
 		hw_pp->ops.setup_dsc(hw_pp);
 
 	if (hw_dsc->ops.dsc_bind_pingpong_blk)
-		hw_dsc->ops.dsc_bind_pingpong_blk(hw_dsc, true, hw_pp->idx);
+		hw_dsc->ops.dsc_bind_pingpong_blk(hw_dsc, hw_pp->idx);
 
 	if (hw_pp->ops.enable_dsc)
 		hw_pp->ops.enable_dsc(hw_pp);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
index 8deedeae..509dbaa 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
@@ -157,7 +157,6 @@ static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc,
 
 static void dpu_hw_dsc_bind_pingpong_blk(
 		struct dpu_hw_dsc *hw_dsc,
-		bool enable,
 		const enum dpu_pingpong pp)
 {
 	struct dpu_hw_blk_reg_map *c = &hw_dsc->hw;
@@ -166,14 +165,15 @@ static void dpu_hw_dsc_bind_pingpong_blk(
 
 	dsc_ctl_offset = DSC_CTL(hw_dsc->idx);
 
-	if (enable)
+	if (pp)
 		mux_cfg = (pp - PINGPONG_0) & 0x7;
 
-	DRM_DEBUG_KMS("%s dsc:%d %s pp:%d\n",
-			enable ? "Binding" : "Unbinding",
-			hw_dsc->idx - DSC_0,
-			enable ? "to" : "from",
-			pp - PINGPONG_0);
+	if (pp)
+		DRM_DEBUG_KMS("Binding dsc:%d to pp:%d\n",
+			      hw_dsc->idx - DSC_0, pp - PINGPONG_0);
+	else
+		DRM_DEBUG_KMS("Unbinding dsc:%d from any pp\n",
+			      hw_dsc->idx - DSC_0);
 
 	DPU_REG_WRITE(c, dsc_ctl_offset, mux_cfg);
 }
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
index 287ec5f..138080a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
@@ -44,7 +44,6 @@ struct dpu_hw_dsc_ops {
 				  struct drm_dsc_config *dsc);
 
 	void (*dsc_bind_pingpong_blk)(struct dpu_hw_dsc *hw_dsc,
-				  bool enable,
 				  enum dpu_pingpong pp);
 };
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
index 1913a19..02a0f48 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h
@@ -191,7 +191,8 @@ enum dpu_dsc {
 };
 
 enum dpu_pingpong {
-	PINGPONG_0 = 1,
+	PINGPONG_NONE,
+	PINGPONG_0,
 	PINGPONG_1,
 	PINGPONG_2,
 	PINGPONG_3,
-- 
2.7.4

[PATCH v14 06/10] drm/msm/dpu: add support for DSC encoder v1.2 engine

[Kuogee Hsieh]

Add support for DSC 1.2 by providing the necessary hooks to program
the DPU DSC 1.2 encoder.

Changes in v3:
-- fixed kernel test rebot report that "__iomem *off" is declared but not
   used at dpu_hw_dsc_config_1_2()
-- unrolling thresh loops

Changes in v4:
-- delete DPU_DSC_HW_REV_1_1
-- delete off and used real register name directly

Changes in v7:
-- replace offset with sblk->enc.base
-- replace ss with slice

Changes in v8:
-- fixed checkpatch warning

Changes in v9:
-- replaced __dsc_calc_ob_max_addr() with __dsc_calc_output_buf_max_addr()
-- replaced variable num_ss with num_softslice
-- remove inline from function  declaration

changes in v10:
-- rewording text of changes in v9
-- replace DPU_DSC_NATIVE_422_EN with DPU_DSC_NATIVE_42x_EN
-- replace drm_dsc_calculate_flatness_det_thresh() with drm_dsc_flatness_det_thresh()

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/Makefile                   |   1 +
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h |  31 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h     |  14 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c | 387 +++++++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c         |   7 +-
 5 files changed, 436 insertions(+), 4 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c

diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 7274c412..4c7195af2 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -65,6 +65,7 @@ msm-$(CONFIG_DRM_MSM_DPU) += \
 	disp/dpu1/dpu_hw_catalog.o \
 	disp/dpu1/dpu_hw_ctl.o \
 	disp/dpu1/dpu_hw_dsc.o \
+	disp/dpu1/dpu_hw_dsc_1_2.o \
 	disp/dpu1/dpu_hw_interrupts.o \
 	disp/dpu1/dpu_hw_intf.o \
 	disp/dpu1/dpu_hw_lm.o \
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 83854e8..11610f7 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2022. Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
  */
 
@@ -244,12 +244,18 @@ enum {
 };
 
 /**
- * DSC features
+ * DSC sub-blocks/features
  * @DPU_DSC_OUTPUT_CTRL       Configure which PINGPONG block gets
  *                            the pixel output from this DSC.
+ * @DPU_DSC_HW_REV_1_2        DSC block supports DSC 1.1 and 1.2
+ * @DPU_DSC_NATIVE_42x_EN     Supports NATIVE_422_EN and NATIVE_420_EN encoding
+ * @DPU_DSC_MAX
  */
 enum {
 	DPU_DSC_OUTPUT_CTRL = 0x1,
+	DPU_DSC_HW_REV_1_2,
+	DPU_DSC_NATIVE_42x_EN,
+	DPU_DSC_MAX
 };
 
 /**
@@ -306,6 +312,14 @@ struct dpu_pp_blk {
 };
 
 /**
+ * struct dpu_dsc_blk - DSC Encoder sub-blk information
+ * @info:   HW register and features supported by this sub-blk
+ */
+struct dpu_dsc_blk {
+	DPU_HW_SUBBLK_INFO;
+};
+
+/**
  * enum dpu_qos_lut_usage - define QoS LUT use cases
  */
 enum dpu_qos_lut_usage {
@@ -452,6 +466,16 @@ struct dpu_pingpong_sub_blks {
 };
 
 /**
+ * struct dpu_dsc_sub_blks - DSC sub-blks
+ * @enc: DSC encoder sub-block
+ * @ctl: DSC controller sub-block
+ */
+struct dpu_dsc_sub_blks {
+	struct dpu_dsc_blk enc;
+	struct dpu_dsc_blk ctl;
+};
+
+/**
  * dpu_clk_ctrl_type - Defines top level clock control signals
  */
 enum dpu_clk_ctrl_type {
@@ -605,10 +629,13 @@ struct dpu_merge_3d_cfg  {
  * struct dpu_dsc_cfg - information of DSC blocks
  * @id                 enum identifying this block
  * @base               register offset of this block
+ * @len:               length of hardware block
  * @features           bit mask identifying sub-blocks/features
+ * @sblk:              sub-blocks information
  */
 struct dpu_dsc_cfg {
 	DPU_HW_BLK_INFO;
+	const struct dpu_dsc_sub_blks *sblk;
 };
 
 /**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
index 138080a..d5b597a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
@@ -1,5 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2020-2022, Linaro Limited */
+/*
+ * Copyright (c) 2020-2022, Linaro Limited
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved
+ */
 
 #ifndef _DPU_HW_DSC_H
 #define _DPU_HW_DSC_H
@@ -69,6 +72,15 @@ struct dpu_hw_dsc *dpu_hw_dsc_init(const struct dpu_dsc_cfg *cfg,
 		void __iomem *addr);
 
 /**
+ * dpu_hw_dsc_init_1_2() - initializes the v1.2 DSC hw driver object
+ * @cfg:  DSC catalog entry for which driver object is required
+ * @addr: Mapped register io address of MDP
+ * Returns: Error code or allocated dpu_hw_dsc context
+ */
+struct dpu_hw_dsc *dpu_hw_dsc_init_1_2(const struct dpu_dsc_cfg *cfg,
+				       void __iomem *addr);
+
+/**
  * dpu_hw_dsc_destroy - destroys dsc driver context
  * @dsc:   Pointer to dsc driver context returned by dpu_hw_dsc_init
  */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
new file mode 100644
index 00000000..24fe1d9
--- /dev/null
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
@@ -0,0 +1,387 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved
+ */
+
+#include <drm/display/drm_dsc_helper.h>
+
+#include "dpu_kms.h"
+#include "dpu_hw_catalog.h"
+#include "dpu_hwio.h"
+#include "dpu_hw_mdss.h"
+#include "dpu_hw_dsc.h"
+
+#define DSC_CMN_MAIN_CNF           0x00
+
+/* DPU_DSC_ENC register offsets */
+#define ENC_DF_CTRL                0x00
+#define ENC_GENERAL_STATUS         0x04
+#define ENC_HSLICE_STATUS          0x08
+#define ENC_OUT_STATUS             0x0C
+#define ENC_INT_STAT               0x10
+#define ENC_INT_CLR                0x14
+#define ENC_INT_MASK               0x18
+#define DSC_MAIN_CONF              0x30
+#define DSC_PICTURE_SIZE           0x34
+#define DSC_SLICE_SIZE             0x38
+#define DSC_MISC_SIZE              0x3C
+#define DSC_HRD_DELAYS             0x40
+#define DSC_RC_SCALE               0x44
+#define DSC_RC_SCALE_INC_DEC       0x48
+#define DSC_RC_OFFSETS_1           0x4C
+#define DSC_RC_OFFSETS_2           0x50
+#define DSC_RC_OFFSETS_3           0x54
+#define DSC_RC_OFFSETS_4           0x58
+#define DSC_FLATNESS_QP            0x5C
+#define DSC_RC_MODEL_SIZE          0x60
+#define DSC_RC_CONFIG              0x64
+#define DSC_RC_BUF_THRESH_0        0x68
+#define DSC_RC_BUF_THRESH_1        0x6C
+#define DSC_RC_BUF_THRESH_2        0x70
+#define DSC_RC_BUF_THRESH_3        0x74
+#define DSC_RC_MIN_QP_0            0x78
+#define DSC_RC_MIN_QP_1            0x7C
+#define DSC_RC_MIN_QP_2            0x80
+#define DSC_RC_MAX_QP_0            0x84
+#define DSC_RC_MAX_QP_1            0x88
+#define DSC_RC_MAX_QP_2            0x8C
+#define DSC_RC_RANGE_BPG_OFFSETS_0 0x90
+#define DSC_RC_RANGE_BPG_OFFSETS_1 0x94
+#define DSC_RC_RANGE_BPG_OFFSETS_2 0x98
+
+/* DPU_DSC_CTL register offsets */
+#define DSC_CTL                    0x00
+#define DSC_CFG                    0x04
+#define DSC_DATA_IN_SWAP           0x08
+#define DSC_CLK_CTRL               0x0C
+
+static int _dsc_calc_output_buf_max_addr(struct dpu_hw_dsc *hw_dsc, int num_softslice)
+{
+	int max_addr = 2400 / num_softslice;
+
+	if (hw_dsc->caps->features & BIT(DPU_DSC_NATIVE_42x_EN))
+		max_addr /= 2;
+
+	return max_addr - 1;
+};
+
+static void dpu_hw_dsc_disable_1_2(struct dpu_hw_dsc *hw_dsc)
+{
+	struct dpu_hw_blk_reg_map *hw;
+	const struct dpu_dsc_sub_blks *sblk;
+
+	if (!hw_dsc)
+		return;
+
+	hw = &hw_dsc->hw;
+	sblk = hw_dsc->caps->sblk;
+	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, 0);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, 0);
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, 0);
+}
+
+static void dpu_hw_dsc_config_1_2(struct dpu_hw_dsc *hw_dsc,
+				  struct drm_dsc_config *dsc,
+				  u32 mode,
+				  u32 initial_lines)
+{
+	struct dpu_hw_blk_reg_map *hw;
+	const struct dpu_dsc_sub_blks *sblk;
+	u32 data = 0;
+	u32 det_thresh_flatness;
+	u32 num_active_slice_per_enc;
+	u32 bpp;
+
+	if (!hw_dsc || !dsc)
+		return;
+
+	hw = &hw_dsc->hw;
+
+	sblk = hw_dsc->caps->sblk;
+
+	if (mode & DSC_MODE_SPLIT_PANEL)
+		data |= BIT(0);
+
+	if (mode & DSC_MODE_MULTIPLEX)
+		data |= BIT(1);
+
+	num_active_slice_per_enc = dsc->slice_count;
+	if (mode & DSC_MODE_MULTIPLEX)
+		num_active_slice_per_enc = dsc->slice_count / 2;
+
+	data |= (num_active_slice_per_enc & 0x3) << 7;
+
+	DPU_REG_WRITE(hw, DSC_CMN_MAIN_CNF, data);
+
+	data = (initial_lines & 0xff);
+
+	if (mode & DSC_MODE_VIDEO)
+		data |= BIT(9);
+
+	data |= (_dsc_calc_output_buf_max_addr(hw_dsc, num_active_slice_per_enc) << 18);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, data);
+
+	data = (dsc->dsc_version_minor & 0xf) << 28;
+	if (dsc->dsc_version_minor == 0x2) {
+		if (dsc->native_422)
+			data |= BIT(22);
+		if (dsc->native_420)
+			data |= BIT(21);
+	}
+
+	bpp = dsc->bits_per_pixel;
+	/* as per hw requirement bpp should be programmed
+	 * twice the actual value in case of 420 or 422 encoding
+	 */
+	if (dsc->native_422 || dsc->native_420)
+		bpp = 2 * bpp;
+
+	data |= bpp << 10;
+
+	if (dsc->block_pred_enable)
+		data |= BIT(20);
+
+	if (dsc->convert_rgb)
+		data |= BIT(4);
+
+	data |= (dsc->line_buf_depth & 0xf) << 6;
+	data |= dsc->bits_per_component & 0xf;
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, data);
+
+	data = (dsc->pic_width & 0xffff) |
+		((dsc->pic_height & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_PICTURE_SIZE, data);
+
+	data = (dsc->slice_width & 0xffff) |
+		((dsc->slice_height & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_SLICE_SIZE, data);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MISC_SIZE,
+		      (dsc->slice_chunk_size) & 0xffff);
+
+	data = (dsc->initial_xmit_delay & 0xffff) |
+		((dsc->initial_dec_delay & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_HRD_DELAYS, data);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE,
+		      dsc->initial_scale_value & 0x3f);
+
+	data = (dsc->scale_increment_interval & 0xffff) |
+		((dsc->scale_decrement_interval & 0x7ff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE_INC_DEC, data);
+
+	data = (dsc->first_line_bpg_offset & 0x1f) |
+		((dsc->second_line_bpg_offset & 0x1f) << 5);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_1, data);
+
+	data = (dsc->nfl_bpg_offset & 0xffff) |
+		((dsc->slice_bpg_offset & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_2, data);
+
+	data = (dsc->initial_offset & 0xffff) |
+		((dsc->final_offset & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_3, data);
+
+	data = (dsc->nsl_bpg_offset & 0xffff) |
+		((dsc->second_line_offset_adj & 0xffff) << 16);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_4, data);
+
+	det_thresh_flatness = drm_dsc_flatness_det_thresh(dsc);
+	data = (dsc->flatness_min_qp & 0x1f) |
+		((dsc->flatness_max_qp & 0x1f) << 5) |
+		((det_thresh_flatness & 0xff) << 10);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_FLATNESS_QP, data);
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MODEL_SIZE,
+		      (dsc->rc_model_size) & 0xffff);
+
+	data = dsc->rc_edge_factor & 0xf;
+	data |= (dsc->rc_quant_incr_limit0 & 0x1f) << 8;
+	data |= (dsc->rc_quant_incr_limit1 & 0x1f) << 13;
+	data |= (dsc->rc_tgt_offset_high & 0xf) << 20;
+	data |= (dsc->rc_tgt_offset_low & 0xf) << 24;
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_CONFIG, data);
+
+	/* program the dsc wrapper */
+	data = BIT(0); /* encoder enable */
+	if (dsc->native_422)
+		data |= BIT(8);
+	else if (dsc->native_420)
+		data |= BIT(9);
+	if (!dsc->convert_rgb)
+		data |= BIT(10);
+	if (dsc->bits_per_component == 8)
+		data |= BIT(11);
+	if (mode & DSC_MODE_SPLIT_PANEL)
+		data |= BIT(12);
+	if (mode & DSC_MODE_MULTIPLEX)
+		data |= BIT(13);
+	if (!(mode & DSC_MODE_VIDEO))
+		data |= BIT(17);
+
+	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, data);
+}
+
+static void dpu_hw_dsc_config_thresh_1_2(struct dpu_hw_dsc *hw_dsc,
+					 struct drm_dsc_config *dsc)
+{
+	struct dpu_hw_blk_reg_map *hw;
+	const struct dpu_dsc_sub_blks *sblk;
+	struct drm_dsc_rc_range_parameters *rc;
+
+	if (!hw_dsc || !dsc)
+		return;
+
+	hw = &hw_dsc->hw;
+
+	sblk = hw_dsc->caps->sblk;
+
+	rc = dsc->rc_range_params;
+
+	/*
+	 * With BUF_THRESH -- 14 in total
+	 * each register contains 4 thresh values with the last register
+	 * containing only 2 thresh values
+	 */
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_0,
+		      (dsc->rc_buf_thresh[0] << 0) |
+		      (dsc->rc_buf_thresh[1] << 8) |
+		      (dsc->rc_buf_thresh[2] << 16) |
+		      (dsc->rc_buf_thresh[3] << 24));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_1,
+		      (dsc->rc_buf_thresh[4] << 0) |
+		      (dsc->rc_buf_thresh[5] << 8) |
+		      (dsc->rc_buf_thresh[6] << 16) |
+		      (dsc->rc_buf_thresh[7] << 24));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_2,
+		      (dsc->rc_buf_thresh[8] << 0) |
+		      (dsc->rc_buf_thresh[9] << 8) |
+		      (dsc->rc_buf_thresh[10] << 16) |
+		      (dsc->rc_buf_thresh[11] << 24));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_3,
+		      (dsc->rc_buf_thresh[12] << 0) |
+		      (dsc->rc_buf_thresh[13] << 8));
+
+	/*
+	 * with min/max_QP -- 5 bits
+	 * each register contains 5 min_qp or max_qp for total of 15
+	 *
+	 * With BPG_OFFSET -- 6 bits
+	 * each register contains 5 BPG_offset for total of 15
+	 */
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_0,
+		      (rc[0].range_min_qp << 0) |
+		      (rc[1].range_min_qp << 5) |
+		      (rc[2].range_min_qp << 10) |
+		      (rc[3].range_min_qp << 15) |
+		      (rc[4].range_min_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_0,
+		      (rc[0].range_max_qp << 0) |
+		      (rc[1].range_max_qp << 5) |
+		      (rc[2].range_max_qp << 10) |
+		      (rc[3].range_max_qp << 15) |
+		      (rc[4].range_max_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_0,
+		      (rc[0].range_bpg_offset << 0) |
+		      (rc[1].range_bpg_offset << 6) |
+		      (rc[2].range_bpg_offset << 12) |
+		      (rc[3].range_bpg_offset << 18) |
+		      (rc[4].range_bpg_offset << 24));
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_1,
+		      (rc[5].range_min_qp << 0) |
+		      (rc[6].range_min_qp << 5) |
+		      (rc[7].range_min_qp << 10) |
+		      (rc[8].range_min_qp << 15) |
+		      (rc[9].range_min_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_1,
+		      (rc[5].range_max_qp << 0) |
+		      (rc[6].range_max_qp << 5) |
+		      (rc[7].range_max_qp << 10) |
+		      (rc[8].range_max_qp << 15) |
+		      (rc[9].range_max_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_1,
+		      (rc[5].range_bpg_offset << 0) |
+		      (rc[6].range_bpg_offset << 6) |
+		      (rc[7].range_bpg_offset << 12) |
+		      (rc[8].range_bpg_offset << 18) |
+		      (rc[9].range_bpg_offset << 24));
+
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_2,
+		      (rc[10].range_min_qp << 0) |
+		      (rc[11].range_min_qp << 5) |
+		      (rc[12].range_min_qp << 10) |
+		      (rc[13].range_min_qp << 15) |
+		      (rc[14].range_min_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_2,
+		      (rc[10].range_max_qp << 0) |
+		      (rc[11].range_max_qp << 5) |
+		      (rc[12].range_max_qp << 10) |
+		      (rc[13].range_max_qp << 15) |
+		      (rc[14].range_max_qp << 20));
+	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_2,
+		      (rc[10].range_bpg_offset << 0) |
+		      (rc[11].range_bpg_offset << 6) |
+		      (rc[12].range_bpg_offset << 12) |
+		      (rc[13].range_bpg_offset << 18) |
+		      (rc[14].range_bpg_offset << 24));
+}
+
+static void dpu_hw_dsc_bind_pingpong_blk_1_2(struct dpu_hw_dsc *hw_dsc,
+					     const enum dpu_pingpong pp)
+{
+	struct dpu_hw_blk_reg_map *hw;
+	const struct dpu_dsc_sub_blks *sblk;
+	int mux_cfg = 0xf; /* Disabled */
+
+	hw = &hw_dsc->hw;
+
+	sblk = hw_dsc->caps->sblk;
+
+	if (pp)
+		mux_cfg = (pp - PINGPONG_0) & 0x7;
+
+	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CTL, mux_cfg);
+}
+
+static void _setup_dcs_ops_1_2(struct dpu_hw_dsc_ops *ops,
+			       const unsigned long features)
+{
+	ops->dsc_disable = dpu_hw_dsc_disable_1_2;
+	ops->dsc_config = dpu_hw_dsc_config_1_2;
+	ops->dsc_config_thresh = dpu_hw_dsc_config_thresh_1_2;
+	ops->dsc_bind_pingpong_blk = dpu_hw_dsc_bind_pingpong_blk_1_2;
+}
+
+struct dpu_hw_dsc *dpu_hw_dsc_init_1_2(const struct dpu_dsc_cfg *cfg,
+				       void __iomem *addr)
+{
+	struct dpu_hw_dsc *c;
+
+	c = kzalloc(sizeof(*c), GFP_KERNEL);
+	if (!c)
+		return ERR_PTR(-ENOMEM);
+
+	c->hw.blk_addr = addr + cfg->base;
+	c->hw.log_mask = DPU_DBG_MASK_DSC;
+
+	c->idx = cfg->id;
+	c->caps = cfg;
+	_setup_dcs_ops_1_2(&c->ops, c->caps->features);
+
+	return c;
+}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index f0fc704..502dd60 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #define pr_fmt(fmt)	"[drm:%s] " fmt, __func__
@@ -246,7 +247,11 @@ int dpu_rm_init(struct dpu_rm *rm,
 		struct dpu_hw_dsc *hw;
 		const struct dpu_dsc_cfg *dsc = &cat->dsc[i];
 
-		hw = dpu_hw_dsc_init(dsc, mmio);
+		if (test_bit(DPU_DSC_HW_REV_1_2, &dsc->features))
+			hw = dpu_hw_dsc_init_1_2(dsc, mmio);
+		else
+			hw = dpu_hw_dsc_init(dsc, mmio);
+
 		if (IS_ERR_OR_NULL(hw)) {
 			rc = PTR_ERR(hw);
 			DPU_ERROR("failed dsc object creation: err %d\n", rc);
-- 
2.7.4

Re: [PATCH v14 06/10] drm/msm/dpu: add support for DSC encoder v1.2 engine

[Marijn Suijten]

On 2023-05-25 10:40:54, Kuogee Hsieh wrote:
> Add support for DSC 1.2 by providing the necessary hooks to program
> the DPU DSC 1.2 encoder.
> 
> Changes in v3:
> -- fixed kernel test rebot report that "__iomem *off" is declared but not
>    used at dpu_hw_dsc_config_1_2()
> -- unrolling thresh loops
> 
> Changes in v4:
> -- delete DPU_DSC_HW_REV_1_1
> -- delete off and used real register name directly
> 
> Changes in v7:
> -- replace offset with sblk->enc.base
> -- replace ss with slice
> 
> Changes in v8:
> -- fixed checkpatch warning
> 
> Changes in v9:
> -- replaced __dsc_calc_ob_max_addr() with __dsc_calc_output_buf_max_addr()
> -- replaced variable num_ss with num_softslice
> -- remove inline from function  declaration
> 
> changes in v10:
> -- rewording text of changes in v9
> -- replace DPU_DSC_NATIVE_422_EN with DPU_DSC_NATIVE_42x_EN
> -- replace drm_dsc_calculate_flatness_det_thresh() with drm_dsc_flatness_det_thresh()
> 
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Since I have given this code adequate comments, and have finally
successfully used/tested it on SM8350 (Sony Xperia 5III):

Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>

Note that I did not explicitly check if the register writes match
downstream or reference material.

> ---
>  drivers/gpu/drm/msm/Makefile                   |   1 +
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h |  31 +-
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h     |  14 +-
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c | 387 +++++++++++++++++++++++++
>  drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c         |   7 +-
>  5 files changed, 436 insertions(+), 4 deletions(-)
>  create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
> 
> diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
> index 7274c412..4c7195af2 100644
> --- a/drivers/gpu/drm/msm/Makefile
> +++ b/drivers/gpu/drm/msm/Makefile
> @@ -65,6 +65,7 @@ msm-$(CONFIG_DRM_MSM_DPU) += \
>  	disp/dpu1/dpu_hw_catalog.o \
>  	disp/dpu1/dpu_hw_ctl.o \
>  	disp/dpu1/dpu_hw_dsc.o \
> +	disp/dpu1/dpu_hw_dsc_1_2.o \
>  	disp/dpu1/dpu_hw_interrupts.o \
>  	disp/dpu1/dpu_hw_intf.o \
>  	disp/dpu1/dpu_hw_lm.o \
> 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 83854e8..11610f7 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> @@ -1,6 +1,6 @@
>  /* SPDX-License-Identifier: GPL-2.0-only */
>  /*
> - * Copyright (c) 2022. Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
>   * Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
>   */
>  
> @@ -244,12 +244,18 @@ enum {
>  };
>  
>  /**
> - * DSC features
> + * DSC sub-blocks/features
>   * @DPU_DSC_OUTPUT_CTRL       Configure which PINGPONG block gets
>   *                            the pixel output from this DSC.
> + * @DPU_DSC_HW_REV_1_2        DSC block supports DSC 1.1 and 1.2
> + * @DPU_DSC_NATIVE_42x_EN     Supports NATIVE_422_EN and NATIVE_420_EN encoding
> + * @DPU_DSC_MAX
>   */
>  enum {
>  	DPU_DSC_OUTPUT_CTRL = 0x1,
> +	DPU_DSC_HW_REV_1_2,
> +	DPU_DSC_NATIVE_42x_EN,
> +	DPU_DSC_MAX
>  };
>  
>  /**
> @@ -306,6 +312,14 @@ struct dpu_pp_blk {
>  };
>  
>  /**
> + * struct dpu_dsc_blk - DSC Encoder sub-blk information
> + * @info:   HW register and features supported by this sub-blk
> + */
> +struct dpu_dsc_blk {
> +	DPU_HW_SUBBLK_INFO;
> +};
> +
> +/**
>   * enum dpu_qos_lut_usage - define QoS LUT use cases
>   */
>  enum dpu_qos_lut_usage {
> @@ -452,6 +466,16 @@ struct dpu_pingpong_sub_blks {
>  };
>  
>  /**
> + * struct dpu_dsc_sub_blks - DSC sub-blks
> + * @enc: DSC encoder sub-block
> + * @ctl: DSC controller sub-block
> + */
> +struct dpu_dsc_sub_blks {
> +	struct dpu_dsc_blk enc;
> +	struct dpu_dsc_blk ctl;
> +};
> +
> +/**
>   * dpu_clk_ctrl_type - Defines top level clock control signals
>   */
>  enum dpu_clk_ctrl_type {
> @@ -605,10 +629,13 @@ struct dpu_merge_3d_cfg  {
>   * struct dpu_dsc_cfg - information of DSC blocks
>   * @id                 enum identifying this block
>   * @base               register offset of this block
> + * @len:               length of hardware block
>   * @features           bit mask identifying sub-blocks/features
> + * @sblk:              sub-blocks information
>   */
>  struct dpu_dsc_cfg {
>  	DPU_HW_BLK_INFO;
> +	const struct dpu_dsc_sub_blks *sblk;
>  };
>  
>  /**
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
> index 138080a..d5b597a 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
> @@ -1,5 +1,8 @@
>  /* SPDX-License-Identifier: GPL-2.0-only */
> -/* Copyright (c) 2020-2022, Linaro Limited */
> +/*
> + * Copyright (c) 2020-2022, Linaro Limited
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved
> + */
>  
>  #ifndef _DPU_HW_DSC_H
>  #define _DPU_HW_DSC_H
> @@ -69,6 +72,15 @@ struct dpu_hw_dsc *dpu_hw_dsc_init(const struct dpu_dsc_cfg *cfg,
>  		void __iomem *addr);
>  
>  /**
> + * dpu_hw_dsc_init_1_2() - initializes the v1.2 DSC hw driver object
> + * @cfg:  DSC catalog entry for which driver object is required
> + * @addr: Mapped register io address of MDP
> + * Returns: Error code or allocated dpu_hw_dsc context
> + */
> +struct dpu_hw_dsc *dpu_hw_dsc_init_1_2(const struct dpu_dsc_cfg *cfg,
> +				       void __iomem *addr);
> +
> +/**
>   * dpu_hw_dsc_destroy - destroys dsc driver context
>   * @dsc:   Pointer to dsc driver context returned by dpu_hw_dsc_init
>   */
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
> new file mode 100644
> index 00000000..24fe1d9
> --- /dev/null
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
> @@ -0,0 +1,387 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved
> + */
> +
> +#include <drm/display/drm_dsc_helper.h>
> +
> +#include "dpu_kms.h"
> +#include "dpu_hw_catalog.h"
> +#include "dpu_hwio.h"
> +#include "dpu_hw_mdss.h"
> +#include "dpu_hw_dsc.h"
> +
> +#define DSC_CMN_MAIN_CNF           0x00
> +
> +/* DPU_DSC_ENC register offsets */
> +#define ENC_DF_CTRL                0x00
> +#define ENC_GENERAL_STATUS         0x04
> +#define ENC_HSLICE_STATUS          0x08
> +#define ENC_OUT_STATUS             0x0C
> +#define ENC_INT_STAT               0x10
> +#define ENC_INT_CLR                0x14
> +#define ENC_INT_MASK               0x18
> +#define DSC_MAIN_CONF              0x30
> +#define DSC_PICTURE_SIZE           0x34
> +#define DSC_SLICE_SIZE             0x38
> +#define DSC_MISC_SIZE              0x3C
> +#define DSC_HRD_DELAYS             0x40
> +#define DSC_RC_SCALE               0x44
> +#define DSC_RC_SCALE_INC_DEC       0x48
> +#define DSC_RC_OFFSETS_1           0x4C
> +#define DSC_RC_OFFSETS_2           0x50
> +#define DSC_RC_OFFSETS_3           0x54
> +#define DSC_RC_OFFSETS_4           0x58
> +#define DSC_FLATNESS_QP            0x5C
> +#define DSC_RC_MODEL_SIZE          0x60
> +#define DSC_RC_CONFIG              0x64
> +#define DSC_RC_BUF_THRESH_0        0x68
> +#define DSC_RC_BUF_THRESH_1        0x6C
> +#define DSC_RC_BUF_THRESH_2        0x70
> +#define DSC_RC_BUF_THRESH_3        0x74
> +#define DSC_RC_MIN_QP_0            0x78
> +#define DSC_RC_MIN_QP_1            0x7C
> +#define DSC_RC_MIN_QP_2            0x80
> +#define DSC_RC_MAX_QP_0            0x84
> +#define DSC_RC_MAX_QP_1            0x88
> +#define DSC_RC_MAX_QP_2            0x8C
> +#define DSC_RC_RANGE_BPG_OFFSETS_0 0x90
> +#define DSC_RC_RANGE_BPG_OFFSETS_1 0x94
> +#define DSC_RC_RANGE_BPG_OFFSETS_2 0x98
> +
> +/* DPU_DSC_CTL register offsets */
> +#define DSC_CTL                    0x00
> +#define DSC_CFG                    0x04
> +#define DSC_DATA_IN_SWAP           0x08
> +#define DSC_CLK_CTRL               0x0C
> +
> +static int _dsc_calc_output_buf_max_addr(struct dpu_hw_dsc *hw_dsc, int num_softslice)
> +{
> +	int max_addr = 2400 / num_softslice;
> +
> +	if (hw_dsc->caps->features & BIT(DPU_DSC_NATIVE_42x_EN))
> +		max_addr /= 2;
> +
> +	return max_addr - 1;
> +};
> +
> +static void dpu_hw_dsc_disable_1_2(struct dpu_hw_dsc *hw_dsc)
> +{
> +	struct dpu_hw_blk_reg_map *hw;
> +	const struct dpu_dsc_sub_blks *sblk;
> +
> +	if (!hw_dsc)
> +		return;
> +
> +	hw = &hw_dsc->hw;
> +	sblk = hw_dsc->caps->sblk;
> +	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, 0);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, 0);
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, 0);
> +}
> +
> +static void dpu_hw_dsc_config_1_2(struct dpu_hw_dsc *hw_dsc,
> +				  struct drm_dsc_config *dsc,
> +				  u32 mode,
> +				  u32 initial_lines)
> +{
> +	struct dpu_hw_blk_reg_map *hw;
> +	const struct dpu_dsc_sub_blks *sblk;
> +	u32 data = 0;
> +	u32 det_thresh_flatness;
> +	u32 num_active_slice_per_enc;
> +	u32 bpp;
> +
> +	if (!hw_dsc || !dsc)
> +		return;
> +
> +	hw = &hw_dsc->hw;
> +
> +	sblk = hw_dsc->caps->sblk;
> +
> +	if (mode & DSC_MODE_SPLIT_PANEL)
> +		data |= BIT(0);
> +
> +	if (mode & DSC_MODE_MULTIPLEX)
> +		data |= BIT(1);
> +
> +	num_active_slice_per_enc = dsc->slice_count;
> +	if (mode & DSC_MODE_MULTIPLEX)
> +		num_active_slice_per_enc = dsc->slice_count / 2;
> +
> +	data |= (num_active_slice_per_enc & 0x3) << 7;
> +
> +	DPU_REG_WRITE(hw, DSC_CMN_MAIN_CNF, data);
> +
> +	data = (initial_lines & 0xff);

Are these parenthesis needed?

> +
> +	if (mode & DSC_MODE_VIDEO)
> +		data |= BIT(9);
> +
> +	data |= (_dsc_calc_output_buf_max_addr(hw_dsc, num_active_slice_per_enc) << 18);

parenthesis?

- Marijn

> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, data);
> +
> +	data = (dsc->dsc_version_minor & 0xf) << 28;
> +	if (dsc->dsc_version_minor == 0x2) {
> +		if (dsc->native_422)
> +			data |= BIT(22);
> +		if (dsc->native_420)
> +			data |= BIT(21);
> +	}
> +
> +	bpp = dsc->bits_per_pixel;
> +	/* as per hw requirement bpp should be programmed
> +	 * twice the actual value in case of 420 or 422 encoding
> +	 */
> +	if (dsc->native_422 || dsc->native_420)
> +		bpp = 2 * bpp;
> +
> +	data |= bpp << 10;
> +
> +	if (dsc->block_pred_enable)
> +		data |= BIT(20);
> +
> +	if (dsc->convert_rgb)
> +		data |= BIT(4);
> +
> +	data |= (dsc->line_buf_depth & 0xf) << 6;
> +	data |= dsc->bits_per_component & 0xf;
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, data);
> +
> +	data = (dsc->pic_width & 0xffff) |
> +		((dsc->pic_height & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_PICTURE_SIZE, data);
> +
> +	data = (dsc->slice_width & 0xffff) |
> +		((dsc->slice_height & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_SLICE_SIZE, data);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_MISC_SIZE,
> +		      (dsc->slice_chunk_size) & 0xffff);
> +
> +	data = (dsc->initial_xmit_delay & 0xffff) |
> +		((dsc->initial_dec_delay & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_HRD_DELAYS, data);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE,
> +		      dsc->initial_scale_value & 0x3f);
> +
> +	data = (dsc->scale_increment_interval & 0xffff) |
> +		((dsc->scale_decrement_interval & 0x7ff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE_INC_DEC, data);
> +
> +	data = (dsc->first_line_bpg_offset & 0x1f) |
> +		((dsc->second_line_bpg_offset & 0x1f) << 5);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_1, data);
> +
> +	data = (dsc->nfl_bpg_offset & 0xffff) |
> +		((dsc->slice_bpg_offset & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_2, data);
> +
> +	data = (dsc->initial_offset & 0xffff) |
> +		((dsc->final_offset & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_3, data);
> +
> +	data = (dsc->nsl_bpg_offset & 0xffff) |
> +		((dsc->second_line_offset_adj & 0xffff) << 16);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_4, data);
> +
> +	det_thresh_flatness = drm_dsc_flatness_det_thresh(dsc);
> +	data = (dsc->flatness_min_qp & 0x1f) |
> +		((dsc->flatness_max_qp & 0x1f) << 5) |
> +		((det_thresh_flatness & 0xff) << 10);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_FLATNESS_QP, data);
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MODEL_SIZE,
> +		      (dsc->rc_model_size) & 0xffff);
> +
> +	data = dsc->rc_edge_factor & 0xf;
> +	data |= (dsc->rc_quant_incr_limit0 & 0x1f) << 8;
> +	data |= (dsc->rc_quant_incr_limit1 & 0x1f) << 13;
> +	data |= (dsc->rc_tgt_offset_high & 0xf) << 20;
> +	data |= (dsc->rc_tgt_offset_low & 0xf) << 24;
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_CONFIG, data);
> +
> +	/* program the dsc wrapper */
> +	data = BIT(0); /* encoder enable */
> +	if (dsc->native_422)
> +		data |= BIT(8);
> +	else if (dsc->native_420)
> +		data |= BIT(9);
> +	if (!dsc->convert_rgb)
> +		data |= BIT(10);
> +	if (dsc->bits_per_component == 8)
> +		data |= BIT(11);
> +	if (mode & DSC_MODE_SPLIT_PANEL)
> +		data |= BIT(12);
> +	if (mode & DSC_MODE_MULTIPLEX)
> +		data |= BIT(13);
> +	if (!(mode & DSC_MODE_VIDEO))
> +		data |= BIT(17);
> +
> +	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, data);
> +}
> +
> +static void dpu_hw_dsc_config_thresh_1_2(struct dpu_hw_dsc *hw_dsc,
> +					 struct drm_dsc_config *dsc)
> +{
> +	struct dpu_hw_blk_reg_map *hw;
> +	const struct dpu_dsc_sub_blks *sblk;
> +	struct drm_dsc_rc_range_parameters *rc;
> +
> +	if (!hw_dsc || !dsc)
> +		return;
> +
> +	hw = &hw_dsc->hw;
> +
> +	sblk = hw_dsc->caps->sblk;
> +
> +	rc = dsc->rc_range_params;
> +
> +	/*
> +	 * With BUF_THRESH -- 14 in total
> +	 * each register contains 4 thresh values with the last register
> +	 * containing only 2 thresh values
> +	 */
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_0,
> +		      (dsc->rc_buf_thresh[0] << 0) |
> +		      (dsc->rc_buf_thresh[1] << 8) |
> +		      (dsc->rc_buf_thresh[2] << 16) |
> +		      (dsc->rc_buf_thresh[3] << 24));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_1,
> +		      (dsc->rc_buf_thresh[4] << 0) |
> +		      (dsc->rc_buf_thresh[5] << 8) |
> +		      (dsc->rc_buf_thresh[6] << 16) |
> +		      (dsc->rc_buf_thresh[7] << 24));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_2,
> +		      (dsc->rc_buf_thresh[8] << 0) |
> +		      (dsc->rc_buf_thresh[9] << 8) |
> +		      (dsc->rc_buf_thresh[10] << 16) |
> +		      (dsc->rc_buf_thresh[11] << 24));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_3,
> +		      (dsc->rc_buf_thresh[12] << 0) |
> +		      (dsc->rc_buf_thresh[13] << 8));
> +
> +	/*
> +	 * with min/max_QP -- 5 bits
> +	 * each register contains 5 min_qp or max_qp for total of 15
> +	 *
> +	 * With BPG_OFFSET -- 6 bits
> +	 * each register contains 5 BPG_offset for total of 15
> +	 */
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_0,
> +		      (rc[0].range_min_qp << 0) |
> +		      (rc[1].range_min_qp << 5) |
> +		      (rc[2].range_min_qp << 10) |
> +		      (rc[3].range_min_qp << 15) |
> +		      (rc[4].range_min_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_0,
> +		      (rc[0].range_max_qp << 0) |
> +		      (rc[1].range_max_qp << 5) |
> +		      (rc[2].range_max_qp << 10) |
> +		      (rc[3].range_max_qp << 15) |
> +		      (rc[4].range_max_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_0,
> +		      (rc[0].range_bpg_offset << 0) |
> +		      (rc[1].range_bpg_offset << 6) |
> +		      (rc[2].range_bpg_offset << 12) |
> +		      (rc[3].range_bpg_offset << 18) |
> +		      (rc[4].range_bpg_offset << 24));
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_1,
> +		      (rc[5].range_min_qp << 0) |
> +		      (rc[6].range_min_qp << 5) |
> +		      (rc[7].range_min_qp << 10) |
> +		      (rc[8].range_min_qp << 15) |
> +		      (rc[9].range_min_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_1,
> +		      (rc[5].range_max_qp << 0) |
> +		      (rc[6].range_max_qp << 5) |
> +		      (rc[7].range_max_qp << 10) |
> +		      (rc[8].range_max_qp << 15) |
> +		      (rc[9].range_max_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_1,
> +		      (rc[5].range_bpg_offset << 0) |
> +		      (rc[6].range_bpg_offset << 6) |
> +		      (rc[7].range_bpg_offset << 12) |
> +		      (rc[8].range_bpg_offset << 18) |
> +		      (rc[9].range_bpg_offset << 24));
> +
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_2,
> +		      (rc[10].range_min_qp << 0) |
> +		      (rc[11].range_min_qp << 5) |
> +		      (rc[12].range_min_qp << 10) |
> +		      (rc[13].range_min_qp << 15) |
> +		      (rc[14].range_min_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_2,
> +		      (rc[10].range_max_qp << 0) |
> +		      (rc[11].range_max_qp << 5) |
> +		      (rc[12].range_max_qp << 10) |
> +		      (rc[13].range_max_qp << 15) |
> +		      (rc[14].range_max_qp << 20));
> +	DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_2,
> +		      (rc[10].range_bpg_offset << 0) |
> +		      (rc[11].range_bpg_offset << 6) |
> +		      (rc[12].range_bpg_offset << 12) |
> +		      (rc[13].range_bpg_offset << 18) |
> +		      (rc[14].range_bpg_offset << 24));
> +}
> +
> +static void dpu_hw_dsc_bind_pingpong_blk_1_2(struct dpu_hw_dsc *hw_dsc,
> +					     const enum dpu_pingpong pp)
> +{
> +	struct dpu_hw_blk_reg_map *hw;
> +	const struct dpu_dsc_sub_blks *sblk;
> +	int mux_cfg = 0xf; /* Disabled */
> +
> +	hw = &hw_dsc->hw;
> +
> +	sblk = hw_dsc->caps->sblk;
> +
> +	if (pp)
> +		mux_cfg = (pp - PINGPONG_0) & 0x7;
> +
> +	DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CTL, mux_cfg);
> +}
> +
> +static void _setup_dcs_ops_1_2(struct dpu_hw_dsc_ops *ops,
> +			       const unsigned long features)
> +{
> +	ops->dsc_disable = dpu_hw_dsc_disable_1_2;
> +	ops->dsc_config = dpu_hw_dsc_config_1_2;
> +	ops->dsc_config_thresh = dpu_hw_dsc_config_thresh_1_2;
> +	ops->dsc_bind_pingpong_blk = dpu_hw_dsc_bind_pingpong_blk_1_2;
> +}
> +
> +struct dpu_hw_dsc *dpu_hw_dsc_init_1_2(const struct dpu_dsc_cfg *cfg,
> +				       void __iomem *addr)
> +{
> +	struct dpu_hw_dsc *c;
> +
> +	c = kzalloc(sizeof(*c), GFP_KERNEL);
> +	if (!c)
> +		return ERR_PTR(-ENOMEM);
> +
> +	c->hw.blk_addr = addr + cfg->base;
> +	c->hw.log_mask = DPU_DBG_MASK_DSC;
> +
> +	c->idx = cfg->id;
> +	c->caps = cfg;
> +	_setup_dcs_ops_1_2(&c->ops, c->caps->features);
> +
> +	return c;
> +}
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> index f0fc704..502dd60 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> @@ -1,6 +1,7 @@
>  // SPDX-License-Identifier: GPL-2.0-only
>  /*
>   * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
>   */
>  
>  #define pr_fmt(fmt)	"[drm:%s] " fmt, __func__
> @@ -246,7 +247,11 @@ int dpu_rm_init(struct dpu_rm *rm,
>  		struct dpu_hw_dsc *hw;
>  		const struct dpu_dsc_cfg *dsc = &cat->dsc[i];
>  
> -		hw = dpu_hw_dsc_init(dsc, mmio);
> +		if (test_bit(DPU_DSC_HW_REV_1_2, &dsc->features))
> +			hw = dpu_hw_dsc_init_1_2(dsc, mmio);
> +		else
> +			hw = dpu_hw_dsc_init(dsc, mmio);
> +
>  		if (IS_ERR_OR_NULL(hw)) {
>  			rc = PTR_ERR(hw);
>  			DPU_ERROR("failed dsc object creation: err %d\n", rc);
> -- 
> 2.7.4
> 

[PATCH v14 07/10] drm/msm/dpu: always clear every individual pending flush mask

[Kuogee Hsieh]

There are two tiers of pending flush control, top level and
individual hardware block. Currently only the top level of
flush mask is reset to 0 but the individual pending flush masks
of particular hardware blocks are left at their previous values,
eventually accumulating all possible bit values and typically
flushing more than necessary.
Reset all individual hardware block flush masks to 0 to avoid
accidentally flushing them.

Changes in V13:
-- rewording commit text
-- add an empty space line as suggested

Changes in V14:
-- add Fixes tag

Fixes: 73bfb790ac78 ("msm:disp:dpu1: setup display datapath for SC7180 target")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 3 +++
 1 file changed, 3 insertions(+)

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 69d0ea2..64c21e0 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -100,6 +100,9 @@ static inline void dpu_hw_ctl_clear_pending_flush(struct dpu_hw_ctl *ctx)
 	trace_dpu_hw_ctl_clear_pending_flush(ctx->pending_flush_mask,
 				     dpu_hw_ctl_get_flush_register(ctx));
 	ctx->pending_flush_mask = 0x0;
+	ctx->pending_intf_flush_mask = 0;
+	ctx->pending_wb_flush_mask = 0;
+	ctx->pending_merge_3d_flush_mask = 0;
 
 	memset(ctx->pending_dspp_flush_mask, 0,
 		sizeof(ctx->pending_dspp_flush_mask));
-- 
2.7.4

[PATCH v14 08/10] drm/msm/dpu: separate DSC flush update out of interface

[Kuogee Hsieh]

Currently DSC flushing happens during interface configuration at
dpu_hw_ctl_intf_cfg_v1(). Separate DSC flush away from
dpu_hw_ctl_intf_cfg_v1() by adding dpu_hw_ctl_update_pending_flush_dsc_v1()
to handle both per-DSC engine and DSC flush bits at same time to make it
consistent with the location of flush programming of other DPU sub-blocks.

Changes in v10:
-- rewording commit text
-- pass ctl directly instead of dpu_enc to dsc_pipe_cfg()
-- ctx->pending_dsc_flush_mask = 0;

Changes in v11:
-- add Fixes tag

Changes in v12:
-- move dsc parameter to next line at dpu_encoder_dsc_pipe_cfg()

Changes in v14:
-- Fixes tag had been move to 1st patch of this series

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 10 ++++++++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c  | 23 +++++++++++++++++------
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h  | 11 +++++++++++
 3 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index ffa6f04..7fca09e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1834,7 +1834,8 @@ dpu_encoder_dsc_initial_line_calc(struct drm_dsc_config *dsc,
 	return DIV_ROUND_UP(total_pixels, dsc->slice_width);
 }
 
-static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_dsc *hw_dsc,
+static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_ctl *ctl,
+				     struct dpu_hw_dsc *hw_dsc,
 				     struct dpu_hw_pingpong *hw_pp,
 				     struct drm_dsc_config *dsc,
 				     u32 common_mode,
@@ -1854,6 +1855,9 @@ static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_dsc *hw_dsc,
 
 	if (hw_pp->ops.enable_dsc)
 		hw_pp->ops.enable_dsc(hw_pp);
+
+	if (ctl->ops.update_pending_flush_dsc)
+		ctl->ops.update_pending_flush_dsc(ctl, hw_dsc->idx);
 }
 
 static void dpu_encoder_prep_dsc(struct dpu_encoder_virt *dpu_enc,
@@ -1861,6 +1865,7 @@ static void dpu_encoder_prep_dsc(struct dpu_encoder_virt *dpu_enc,
 {
 	/* coding only for 2LM, 2enc, 1 dsc config */
 	struct dpu_encoder_phys *enc_master = dpu_enc->cur_master;
+	struct dpu_hw_ctl *ctl = enc_master->hw_ctl;
 	struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC];
 	struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC];
 	int this_frame_slices;
@@ -1898,7 +1903,8 @@ static void dpu_encoder_prep_dsc(struct dpu_encoder_virt *dpu_enc,
 	initial_lines = dpu_encoder_dsc_initial_line_calc(dsc, enc_ip_w);
 
 	for (i = 0; i < MAX_CHANNELS_PER_ENC; i++)
-		dpu_encoder_dsc_pipe_cfg(hw_dsc[i], hw_pp[i], dsc, dsc_common_mode, initial_lines);
+		dpu_encoder_dsc_pipe_cfg(ctl, hw_dsc[i], hw_pp[i],
+					 dsc, dsc_common_mode, initial_lines);
 }
 
 void dpu_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc)
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 64c21e0..ad6983e 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -103,6 +103,7 @@ static inline void dpu_hw_ctl_clear_pending_flush(struct dpu_hw_ctl *ctx)
 	ctx->pending_intf_flush_mask = 0;
 	ctx->pending_wb_flush_mask = 0;
 	ctx->pending_merge_3d_flush_mask = 0;
+	ctx->pending_dsc_flush_mask = 0;
 
 	memset(ctx->pending_dspp_flush_mask, 0,
 		sizeof(ctx->pending_dspp_flush_mask));
@@ -142,6 +143,11 @@ static inline void dpu_hw_ctl_trigger_flush_v1(struct dpu_hw_ctl *ctx)
 				CTL_DSPP_n_FLUSH(dspp - DSPP_0),
 				ctx->pending_dspp_flush_mask[dspp - DSPP_0]);
 		}
+
+	if (ctx->pending_flush_mask & BIT(DSC_IDX))
+		DPU_REG_WRITE(&ctx->hw, CTL_DSC_FLUSH,
+			      ctx->pending_dsc_flush_mask);
+
 	DPU_REG_WRITE(&ctx->hw, CTL_FLUSH, ctx->pending_flush_mask);
 }
 
@@ -288,6 +294,13 @@ static void dpu_hw_ctl_update_pending_flush_merge_3d_v1(struct dpu_hw_ctl *ctx,
 	ctx->pending_flush_mask |= BIT(MERGE_3D_IDX);
 }
 
+static void dpu_hw_ctl_update_pending_flush_dsc_v1(struct dpu_hw_ctl *ctx,
+						   enum dpu_dsc dsc_num)
+{
+	ctx->pending_dsc_flush_mask |= BIT(dsc_num - DSC_0);
+	ctx->pending_flush_mask |= BIT(DSC_IDX);
+}
+
 static void dpu_hw_ctl_update_pending_flush_dspp(struct dpu_hw_ctl *ctx,
 	enum dpu_dspp dspp, u32 dspp_sub_blk)
 {
@@ -505,9 +518,6 @@ 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);
 
@@ -527,10 +537,9 @@ 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, BIT(DSC_IDX));
+
+	if (cfg->dsc)
 		DPU_REG_WRITE(c, CTL_DSC_ACTIVE, cfg->dsc);
-	}
 }
 
 static void dpu_hw_ctl_intf_cfg(struct dpu_hw_ctl *ctx,
@@ -633,6 +642,8 @@ static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
 		ops->update_pending_flush_merge_3d =
 			dpu_hw_ctl_update_pending_flush_merge_3d_v1;
 		ops->update_pending_flush_wb = dpu_hw_ctl_update_pending_flush_wb_v1;
+		ops->update_pending_flush_dsc =
+			dpu_hw_ctl_update_pending_flush_dsc_v1;
 	} else {
 		ops->trigger_flush = dpu_hw_ctl_trigger_flush;
 		ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg;
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 6292002..1c24229 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
@@ -158,6 +158,15 @@ struct dpu_hw_ctl_ops {
 		enum dpu_dspp blk, u32 dspp_sub_blk);
 
 	/**
+	 * OR in the given flushbits to the cached pending_(dsc_)flush_mask
+	 * No effect on hardware
+	 * @ctx: ctl path ctx pointer
+	 * @blk: interface block index
+	 */
+	void (*update_pending_flush_dsc)(struct dpu_hw_ctl *ctx,
+					 enum dpu_dsc blk);
+
+	/**
 	 * Write the value of the pending_flush_mask to hardware
 	 * @ctx       : ctl path ctx pointer
 	 */
@@ -229,6 +238,7 @@ struct dpu_hw_ctl_ops {
  * @pending_flush_mask: storage for pending ctl_flush managed via ops
  * @pending_intf_flush_mask: pending INTF flush
  * @pending_wb_flush_mask: pending WB flush
+ * @pending_dsc_flush_mask: pending DSC flush
  * @ops: operation list
  */
 struct dpu_hw_ctl {
@@ -245,6 +255,7 @@ struct dpu_hw_ctl {
 	u32 pending_wb_flush_mask;
 	u32 pending_merge_3d_flush_mask;
 	u32 pending_dspp_flush_mask[DSPP_MAX - DSPP_0];
+	u32 pending_dsc_flush_mask;
 
 	/* ops */
 	struct dpu_hw_ctl_ops ops;
-- 
2.7.4

[PATCH v14 09/10] drm/msm/dpu: add DSC 1.2 hw blocks for relevant chipsets

[Kuogee Hsieh]

From: Abhinav Kumar <quic_abhinavk@quicinc.com>

Add DSC 1.2 hardware blocks to the catalog with necessary sub-block and
feature flag information.  Each display compression engine (DCE) contains
dual DSC encoders so both share same base address but with its own
different sub block address.

changes in v4:
-- delete DPU_DSC_HW_REV_1_1
-- re arrange sc8280xp_dsc[]

changes in v4:
-- fix checkpatch warning

changes in v10:
-- remove hard slice from commit text
-- replace DPU_DSC_NATIVE_422_EN with DPU_DSC_NATIVE_42x_EN
-- change DSC_BLK_1_2 .len from 0x100 to 0x29c

changes in v11:
-- remove comment at DSC_BLK_1_2 marco

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h   | 14 ++++++++++++++
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h   |  7 +++++++
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h | 16 ++++++++++++++++
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h   | 14 ++++++++++++++
 .../gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h   | 14 ++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c       | 20 +++++++++++++++++++-
 6 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h
index 500cfd0..d90486f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_0_sm8350.h
@@ -153,6 +153,18 @@ static const struct dpu_merge_3d_cfg sm8350_merge_3d[] = {
 	MERGE_3D_BLK("merge_3d_2", MERGE_3D_2, 0x50000),
 };
 
+/*
+ * NOTE: Each display compression engine (DCE) contains dual hard
+ * slice DSC encoders so both share same base address but with
+ * its own different sub block address.
+ */
+static const struct dpu_dsc_cfg sm8350_dsc[] = {
+	DSC_BLK_1_2("dce_0_0", DSC_0, 0x80000, 0x29c, 0, dsc_sblk_0),
+	DSC_BLK_1_2("dce_0_1", DSC_1, 0x80000, 0x29c, 0, dsc_sblk_1),
+	DSC_BLK_1_2("dce_1_0", DSC_2, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_0),
+	DSC_BLK_1_2("dce_1_1", DSC_3, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_1),
+};
+
 static const struct dpu_intf_cfg sm8350_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x34000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7280_MASK,
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
@@ -215,6 +227,8 @@ const struct dpu_mdss_cfg dpu_sm8350_cfg = {
 	.dspp = sm8350_dspp,
 	.pingpong_count = ARRAY_SIZE(sm8350_pp),
 	.pingpong = sm8350_pp,
+	.dsc_count = ARRAY_SIZE(sm8350_dsc),
+	.dsc = sm8350_dsc,
 	.merge_3d_count = ARRAY_SIZE(sm8350_merge_3d),
 	.merge_3d = sm8350_merge_3d,
 	.intf_count = ARRAY_SIZE(sm8350_intf),
diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
index 5646713..52609b8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
@@ -93,6 +93,11 @@ static const struct dpu_pingpong_cfg sc7280_pp[] = {
 	PP_BLK_DITHER("pingpong_3", PINGPONG_3, 0x6c000, 0, sc7280_pp_sblk, -1, -1),
 };
 
+/* NOTE: sc7280 only has one DSC hard slice encoder */
+static const struct dpu_dsc_cfg sc7280_dsc[] = {
+	DSC_BLK_1_2("dce_0_0", DSC_0, 0x80000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_0),
+};
+
 static const struct dpu_intf_cfg sc7280_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x34000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7280_MASK,
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
@@ -149,6 +154,8 @@ const struct dpu_mdss_cfg dpu_sc7280_cfg = {
 	.mixer = sc7280_lm,
 	.pingpong_count = ARRAY_SIZE(sc7280_pp),
 	.pingpong = sc7280_pp,
+	.dsc_count = ARRAY_SIZE(sc7280_dsc),
+	.dsc = sc7280_dsc,
 	.intf_count = ARRAY_SIZE(sc7280_intf),
 	.intf = sc7280_intf,
 	.vbif_count = ARRAY_SIZE(sdm845_vbif),
diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h
index 808aacd..a84cf36 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_0_sc8280xp.h
@@ -141,6 +141,20 @@ static const struct dpu_merge_3d_cfg sc8280xp_merge_3d[] = {
 	MERGE_3D_BLK("merge_3d_2", MERGE_3D_2, 0x50000),
 };
 
+/*
+ * NOTE: Each display compression engine (DCE) contains dual hard
+ * slice DSC encoders so both share same base address but with
+ * its own different sub block address.
+ */
+static const struct dpu_dsc_cfg sc8280xp_dsc[] = {
+	DSC_BLK_1_2("dce_0_0", DSC_0, 0x80000, 0x29c, 0, dsc_sblk_0),
+	DSC_BLK_1_2("dce_0_1", DSC_1, 0x80000, 0x29c, 0, dsc_sblk_1),
+	DSC_BLK_1_2("dce_1_0", DSC_2, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_0),
+	DSC_BLK_1_2("dce_1_1", DSC_3, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_1),
+	DSC_BLK_1_2("dce_2_0", DSC_4, 0x82000, 0x29c, 0, dsc_sblk_0),
+	DSC_BLK_1_2("dce_2_1", DSC_5, 0x82000, 0x29c, 0, dsc_sblk_1),
+};
+
 /* TODO: INTF 3, 8 and 7 are used for MST, marked as INTF_NONE for now */
 static const struct dpu_intf_cfg sc8280xp_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x34000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7280_MASK,
@@ -216,6 +230,8 @@ const struct dpu_mdss_cfg dpu_sc8280xp_cfg = {
 	.dspp = sc8280xp_dspp,
 	.pingpong_count = ARRAY_SIZE(sc8280xp_pp),
 	.pingpong = sc8280xp_pp,
+	.dsc_count = ARRAY_SIZE(sc8280xp_dsc),
+	.dsc = sc8280xp_dsc,
 	.merge_3d_count = ARRAY_SIZE(sc8280xp_merge_3d),
 	.merge_3d = sc8280xp_merge_3d,
 	.intf_count = ARRAY_SIZE(sc8280xp_intf),
diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h
index 1a89ff9..1620622 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_1_sm8450.h
@@ -161,6 +161,18 @@ static const struct dpu_merge_3d_cfg sm8450_merge_3d[] = {
 	MERGE_3D_BLK("merge_3d_3", MERGE_3D_3, 0x65f00),
 };
 
+/*
+ * NOTE: Each display compression engine (DCE) contains dual hard
+ * slice DSC encoders so both share same base address but with
+ * its own different sub block address.
+ */
+static const struct dpu_dsc_cfg sm8450_dsc[] = {
+	DSC_BLK_1_2("dce_0_0", DSC_0, 0x80000, 0x29c, 0, dsc_sblk_0),
+	DSC_BLK_1_2("dce_0_1", DSC_1, 0x80000, 0x29c, 0, dsc_sblk_1),
+	DSC_BLK_1_2("dce_1_0", DSC_2, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_0),
+	DSC_BLK_1_2("dce_1_1", DSC_3, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_1),
+};
+
 static const struct dpu_intf_cfg sm8450_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x34000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7280_MASK,
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
@@ -223,6 +235,8 @@ const struct dpu_mdss_cfg dpu_sm8450_cfg = {
 	.dspp = sm8450_dspp,
 	.pingpong_count = ARRAY_SIZE(sm8450_pp),
 	.pingpong = sm8450_pp,
+	.dsc_count = ARRAY_SIZE(sm8450_dsc),
+	.dsc = sm8450_dsc,
 	.merge_3d_count = ARRAY_SIZE(sm8450_merge_3d),
 	.merge_3d = sm8450_merge_3d,
 	.intf_count = ARRAY_SIZE(sm8450_intf),
diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h
index 497b34c..6582a14 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_0_sm8550.h
@@ -165,6 +165,18 @@ static const struct dpu_merge_3d_cfg sm8550_merge_3d[] = {
 	MERGE_3D_BLK("merge_3d_3", MERGE_3D_3, 0x66700),
 };
 
+/*
+ * NOTE: Each display compression engine (DCE) contains dual hard
+ * slice DSC encoders so both share same base address but with
+ * its own different sub block address.
+ */
+static const struct dpu_dsc_cfg sm8550_dsc[] = {
+	DSC_BLK_1_2("dce_0_0", DSC_0, 0x80000, 0x29c, 0, dsc_sblk_0),
+	DSC_BLK_1_2("dce_0_1", DSC_1, 0x80000, 0x29c, 0, dsc_sblk_1),
+	DSC_BLK_1_2("dce_1_0", DSC_2, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_0),
+	DSC_BLK_1_2("dce_1_1", DSC_3, 0x81000, 0x29c, BIT(DPU_DSC_NATIVE_42x_EN), dsc_sblk_1),
+};
+
 static const struct dpu_intf_cfg sm8550_intf[] = {
 	INTF_BLK("intf_0", INTF_0, 0x34000, 0x280, INTF_DP, MSM_DP_CONTROLLER_0, 24, INTF_SC7280_MASK,
 			DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
@@ -227,6 +239,8 @@ const struct dpu_mdss_cfg dpu_sm8550_cfg = {
 	.dspp = sm8550_dspp,
 	.pingpong_count = ARRAY_SIZE(sm8550_pp),
 	.pingpong = sm8550_pp,
+	.dsc_count = ARRAY_SIZE(sm8550_dsc),
+	.dsc = sm8550_dsc,
 	.merge_3d_count = ARRAY_SIZE(sm8550_merge_3d),
 	.merge_3d = sm8550_merge_3d,
 	.intf_count = ARRAY_SIZE(sm8550_intf),
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 f2a1535..243399d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
- * Copyright (c) 2022. Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #define pr_fmt(fmt)	"[drm:%s:%d] " fmt, __func__, __LINE__
@@ -522,6 +522,16 @@ static const struct dpu_pingpong_sub_blks sc7280_pp_sblk = {
 /*************************************************************
  * DSC sub blocks config
  *************************************************************/
+static const struct dpu_dsc_sub_blks dsc_sblk_0 = {
+	.enc = {.base = 0x100, .len = 0x100},
+	.ctl = {.base = 0xF00, .len = 0x10},
+};
+
+static const struct dpu_dsc_sub_blks dsc_sblk_1 = {
+	.enc = {.base = 0x200, .len = 0x100},
+	.ctl = {.base = 0xF80, .len = 0x10},
+};
+
 #define DSC_BLK(_name, _id, _base, _features) \
 	{\
 	.name = _name, .id = _id, \
@@ -529,6 +539,14 @@ static const struct dpu_pingpong_sub_blks sc7280_pp_sblk = {
 	.features = _features, \
 	}
 
+#define DSC_BLK_1_2(_name, _id, _base, _len, _features, _sblk) \
+	{\
+	.name = _name, .id = _id, \
+	.base = _base, .len = _len, \
+	.features = BIT(DPU_DSC_HW_REV_1_2) | _features, \
+	.sblk = &_sblk, \
+	}
+
 /*************************************************************
  * INTF sub blocks config
  *************************************************************/
-- 
2.7.4

[PATCH v14 10/10] drm/msm/dpu: Tear down DSC datapath on encoder cleanup

[Kuogee Hsieh]

Unset DSC_ACTIVE bit at dpu_hw_ctl_reset_intf_cfg_v1(),
dpu_encoder_unprep_dsc() and dpu_encoder_dsc_pipe_clr() functions
to tear down DSC data path if DSC data path was setup previous.

Changes in V10:
-- pass ctl directly instead of dpu_enc to dsc_pipe_cfg()
-- move both dpu_encoder_unprep_dsc() and dpu_encoder_dsc_pipe_clr() to above phys_cleanup()

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 39 +++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c  |  7 ++++++
 2 files changed, 46 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 7fca09e..3b416e1 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2036,6 +2036,41 @@ static void dpu_encoder_helper_reset_mixers(struct dpu_encoder_phys *phys_enc)
 	}
 }
 
+static void dpu_encoder_dsc_pipe_clr(struct dpu_hw_ctl *ctl,
+				     struct dpu_hw_dsc *hw_dsc,
+				     struct dpu_hw_pingpong *hw_pp)
+{
+	if (hw_dsc->ops.dsc_disable)
+		hw_dsc->ops.dsc_disable(hw_dsc);
+
+	if (hw_pp->ops.disable_dsc)
+		hw_pp->ops.disable_dsc(hw_pp);
+
+	if (hw_dsc->ops.dsc_bind_pingpong_blk)
+		hw_dsc->ops.dsc_bind_pingpong_blk(hw_dsc, PINGPONG_NONE);
+
+	if (ctl->ops.update_pending_flush_dsc)
+		ctl->ops.update_pending_flush_dsc(ctl, hw_dsc->idx);
+}
+
+static void dpu_encoder_unprep_dsc(struct dpu_encoder_virt *dpu_enc)
+{
+	/* coding only for 2LM, 2enc, 1 dsc config */
+	struct dpu_encoder_phys *enc_master = dpu_enc->cur_master;
+	struct dpu_hw_ctl *ctl = enc_master->hw_ctl;
+	struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC];
+	struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC];
+	int i;
+
+	for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) {
+		hw_pp[i] = dpu_enc->hw_pp[i];
+		hw_dsc[i] = dpu_enc->hw_dsc[i];
+
+		if (hw_pp[i] && hw_dsc[i])
+			dpu_encoder_dsc_pipe_clr(ctl, hw_dsc[i], hw_pp[i]);
+	}
+}
+
 void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
 {
 	struct dpu_hw_ctl *ctl = phys_enc->hw_ctl;
@@ -2086,8 +2121,12 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
 					phys_enc->hw_pp->merge_3d->idx);
 	}
 
+	if (dpu_enc->dsc)
+		dpu_encoder_unprep_dsc(dpu_enc);
+
 	intf_cfg.stream_sel = 0; /* Don't care value for video mode */
 	intf_cfg.mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc);
+	intf_cfg.dsc = dpu_encoder_helper_get_dsc(phys_enc);
 
 	if (phys_enc->hw_intf)
 		intf_cfg.intf = phys_enc->hw_intf->idx;
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 ad6983e..e28e8f8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -582,6 +582,7 @@ static void dpu_hw_ctl_reset_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 	u32 intf_active = 0;
 	u32 wb_active = 0;
 	u32 merge3d_active = 0;
+	u32 dsc_active;
 
 	/*
 	 * This API resets each portion of the CTL path namely,
@@ -611,6 +612,12 @@ static void dpu_hw_ctl_reset_intf_cfg_v1(struct dpu_hw_ctl *ctx,
 		wb_active &= ~BIT(cfg->wb - WB_0);
 		DPU_REG_WRITE(c, CTL_WB_ACTIVE, wb_active);
 	}
+
+	if (cfg->dsc) {
+		dsc_active = DPU_REG_READ(c, CTL_DSC_ACTIVE);
+		dsc_active &= ~cfg->dsc;
+		DPU_REG_WRITE(c, CTL_DSC_ACTIVE, dsc_active);
+	}
 }
 
 static void dpu_hw_ctl_set_fetch_pipe_active(struct dpu_hw_ctl *ctx,
-- 
2.7.4

Re: [PATCH v14 00/10] add DSC 1.2 dpu supports

[Dmitry Baryshkov]

On Thu, 25 May 2023 10:40:48 -0700, Kuogee Hsieh wrote:
> This series adds the DPU side changes to support DSC 1.2 encoder. This
> was validated with both DSI DSC 1.2 panel and DP DSC 1.2 monitor.
> The DSI and DP parts will be pushed later on top of this change.
> This seriel is rebase on [1], [2] and catalog fixes from rev-4 of [3].
> 
> [1]: https://patchwork.freedesktop.org/series/116851/
> [2]: https://patchwork.freedesktop.org/series/116615/
> [3]: https://patchwork.freedesktop.org/series/112332/
> 
> [...]

Applied, thanks!

[01/10] drm/msm/dpu: set DSC flush bit correctly at MDP CTL flush register
        https://gitlab.freedesktop.org/lumag/msm/-/commit/12cef323c903
[03/10] drm/msm/dpu: add DPU_PINGPONG_DSC feature bit for DPU < 7.0.0
        https://gitlab.freedesktop.org/lumag/msm/-/commit/c20c44403e11
[04/10] drm/msm/dpu: Guard PINGPONG DSC ops behind DPU_PINGPONG_DSC bit
        https://gitlab.freedesktop.org/lumag/msm/-/commit/108ff1417795
[05/10] drm/msm/dpu: Introduce PINGPONG_NONE to disconnect DSC from PINGPONG
        https://gitlab.freedesktop.org/lumag/msm/-/commit/d45be1ccd330
[07/10] drm/msm/dpu: always clear every individual pending flush mask
        https://gitlab.freedesktop.org/lumag/msm/-/commit/625cbb077007
[08/10] drm/msm/dpu: separate DSC flush update out of interface
        https://gitlab.freedesktop.org/lumag/msm/-/commit/761c629d1860
[10/10] drm/msm/dpu: Tear down DSC datapath on encoder cleanup
        https://gitlab.freedesktop.org/lumag/msm/-/commit/997ed53dd693

(Omitted patches 02/10, 06/10, 09/10)

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Re: [PATCH v14 00/10] add DSC 1.2 dpu supports

[Dmitry Baryshkov]

On Thu, 25 May 2023 10:40:48 -0700, Kuogee Hsieh wrote:
> This series adds the DPU side changes to support DSC 1.2 encoder. This
> was validated with both DSI DSC 1.2 panel and DP DSC 1.2 monitor.
> The DSI and DP parts will be pushed later on top of this change.
> This seriel is rebase on [1], [2] and catalog fixes from rev-4 of [3].
> 
> [1]: https://patchwork.freedesktop.org/series/116851/
> [2]: https://patchwork.freedesktop.org/series/116615/
> [3]: https://patchwork.freedesktop.org/series/112332/
> 
> [...]

Applied, thanks!

[06/10] drm/msm/dpu: add support for DSC encoder v1.2 engine
        https://gitlab.freedesktop.org/lumag/msm/-/commit/8c4094b275f6
[09/10] drm/msm/dpu: add DSC 1.2 hw blocks for relevant chipsets
        https://gitlab.freedesktop.org/lumag/msm/-/commit/0d1b10c63346

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>