Re: [RFC PATCH 06/13] drm/msm/disp/dpu1: Add DSC support in RM

Dmitry Baryshkov
2021-05-28T10:33:31Z

On 21/05/2021 15:49, Vinod Koul wrote:
> This add the bits in RM to enable the DSC blocks
>
> Signed-off-by: Vinod Koul <vkoul@kernel.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 1 +
> drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 32 +++++++++++++++++++++++++
> drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 1 +
> 3 files changed, 34 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> index d6717d6672f7..d56c05146dfe 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
> @@ -165,6 +165,7 @@ struct dpu_global_state {
> uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];
> uint32_t intf_to_enc_id[INTF_MAX - INTF_0];
> uint32_t dspp_to_enc_id[DSPP_MAX - DSPP_0];
> + uint32_t dsc_to_enc_id[DSC_MAX - DSC_0];
> };
>
> struct dpu_global_state
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> index fd2d104f0a91..4da6d72b7996 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
> @@ -11,6 +11,7 @@
> #include "dpu_hw_intf.h"
> #include "dpu_hw_dspp.h"
> #include "dpu_hw_merge3d.h"
> +#include "dpu_hw_dsc.h"
> #include "dpu_encoder.h"
> #include "dpu_trace.h"
>
> @@ -75,6 +76,14 @@ int dpu_rm_destroy(struct dpu_rm *rm)
> dpu_hw_intf_destroy(hw);
> }
> }
> + for (i = 0; i < ARRAY_SIZE(rm->dsc_blks); i++) {
> + struct dpu_hw_dsc *hw;
> +
> + if (rm->intf_blks[i]) {
> + hw = to_dpu_hw_dsc(rm->dsc_blks[i]);
> + dpu_hw_dsc_destroy(hw);
> + }
> + }
>
> return 0;
> }
> @@ -221,6 +230,19 @@ int dpu_rm_init(struct dpu_rm *rm,
> rm->dspp_blks[dspp->id - DSPP_0] = &hw->base;
> }
>
> + for (i = 0; i < cat->dsc_count; i++) {
> + struct dpu_hw_dsc *hw;
> + const struct dpu_dsc_cfg *dsc = &cat->dsc[i];
> +
> + hw = dpu_hw_dsc_init(dsc->id, mmio, cat);
> + if (IS_ERR_OR_NULL(hw)) {
> + rc = PTR_ERR(hw);
> + DPU_ERROR("failed dsc object creation: err %d\n", rc);
> + goto fail;
> + }
> + rm->dsc_blks[dsc->id - DSC_0] = &hw->base;
> + }
> +
> return 0;
>
> fail:
> @@ -476,6 +498,9 @@ static int _dpu_rm_reserve_intf(
> }
>
> global_state->intf_to_enc_id[idx] = enc_id;
> +
> + global_state->dsc_to_enc_id[0] = enc_id;
> + global_state->dsc_to_enc_id[1] = enc_id;

This should bear at least the FIXME.

> return 0;
> }
>
> @@ -567,6 +592,8 @@ void dpu_rm_release(struct dpu_global_state *global_state,
> ARRAY_SIZE(global_state->ctl_to_enc_id), enc->base.id);
> _dpu_rm_clear_mapping(global_state->intf_to_enc_id,
> ARRAY_SIZE(global_state->intf_to_enc_id), enc->base.id);
> + _dpu_rm_clear_mapping(global_state->dsc_to_enc_id,
> + ARRAY_SIZE(global_state->dsc_to_enc_id), enc->base.id);
> }
>
> int dpu_rm_reserve(
> @@ -640,6 +667,11 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
> hw_to_enc_id = global_state->dspp_to_enc_id;
> max_blks = ARRAY_SIZE(rm->dspp_blks);
> break;
> + case DPU_HW_BLK_DSC:
> + hw_blks = rm->dsc_blks;
> + hw_to_enc_id = global_state->dsc_to_enc_id;
> + max_blks = ARRAY_SIZE(rm->dsc_blks);
> + break;
> default:
> DPU_ERROR("blk type %d not managed by rm\n", type);
> return 0;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> index 1f12c8d5b8aa..278d2a510b80 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
> @@ -30,6 +30,7 @@ struct dpu_rm {
> struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
> struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
> struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
> + struct dpu_hw_blk *dsc_blks[DSC_MAX - DSC_0];
>
> uint32_t lm_max_width;
> };
>

--
With best wishes
Dmitry