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
Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 15 ++++++++-------
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, 11 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 4a6bbcc..47cb9f3 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 +165,16 @@ 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
