diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2025-03-07 08:24:54 +0200 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2025-05-01 23:39:46 +0300 |
| commit | c1824a7992da788b43b9f91d816059f626882a10 (patch) | |
| tree | ddd247cf72876c8212207a6e284e492a51d7f33c | |
| parent | e93eee524bb78f3ee4b78654d0083382f98b3d23 (diff) | |
drm/msm/dpu: allocate single CTL for DPU >= 5.0
Unlike previous generation, since DPU 5.0 it is possible to use just one
CTL to handle all INTF and WB blocks for a single output. And one has to
use single CTL to support bonded DSI config. Allocate single CTL for
these DPU versions.
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/641587/
Link: https://lore.kernel.org/r/20250307-dpu-active-ctl-v3-6-5d20655f10ca@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 28 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 2 |
2 files changed, 17 insertions, 13 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c index 3efbba425ca6..c72b968d58a6 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c @@ -53,6 +53,8 @@ int dpu_rm_init(struct drm_device *dev, /* Clear, setup lists */ memset(rm, 0, sizeof(*rm)); + rm->has_legacy_ctls = (cat->mdss_ver->core_major_ver < 5); + /* Interrogate HW catalog and create tracking items for hw blocks */ for (i = 0; i < cat->mixer_count; i++) { struct dpu_hw_mixer *hw; @@ -434,20 +436,19 @@ static int _dpu_rm_reserve_ctls( int i = 0, j, num_ctls; bool needs_split_display; - /* - * For non-CWB mode, each hw_intf needs its own hw_ctl to program its - * control path. - * - * Hardcode num_ctls to 1 if CWB is enabled because in CWB, both the - * writeback and real-time encoders must be driven by the same control - * path - */ - if (top->cwb_enabled) - num_ctls = 1; - else + if (rm->has_legacy_ctls) { + /* + * TODO: check if there is a need for special handling if + * DPU < 5.0 get CWB support. + */ num_ctls = top->num_intf; - needs_split_display = _dpu_rm_needs_split_display(top); + needs_split_display = _dpu_rm_needs_split_display(top); + } else { + /* use single CTL */ + num_ctls = 1; + needs_split_display = false; + } for (j = 0; j < ARRAY_SIZE(rm->ctl_blks); j++) { const struct dpu_hw_ctl *ctl; @@ -465,7 +466,8 @@ static int _dpu_rm_reserve_ctls( DPU_DEBUG("ctl %d caps 0x%lX\n", j + CTL_0, features); - if (needs_split_display != has_split_display) + if (rm->has_legacy_ctls && + needs_split_display != has_split_display) continue; ctl_idx[i] = j; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h index a19dbdb1b6f4..aa62966056d4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h @@ -24,6 +24,7 @@ struct dpu_global_state; * @dspp_blks: array of dspp hardware resources * @hw_sspp: array of sspp hardware resources * @cdm_blk: cdm hardware resource + * @has_legacy_ctls: DPU uses pre-ACTIVE CTL blocks. */ struct dpu_rm { struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0]; @@ -37,6 +38,7 @@ struct dpu_rm { struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0]; struct dpu_hw_sspp *hw_sspp[SSPP_MAX - SSPP_NONE]; struct dpu_hw_blk *cdm_blk; + bool has_legacy_ctls; }; struct dpu_rm_sspp_requirements { |