On Wed, Feb 13, 2019 at 09:45:36AM -0500, David Francis wrote:
> The function drm_dsc_pps_infoframe_pack only
> packed the payload portion of the infoframe.
> Change the input struct to the PPS payload
> to clarify the function's purpose and allow
> for drivers with their own handling of sdp.
> (e.g. drivers with their own struct for
> all SDP transactions)
>
I think if we are just sending pps_payload as an argument to this function
to pack payload, it also makes sense to just send pps_header as an input
to drm_dsc_dp_pps_header_init() to follow the consistency there.
So with that the caller will have to call the header_init first , initialize the
sdp header and then call the _payload_pack to pack the payload bytes.
And then send the entire infoframe to the sink.
Could you please also make that change in this patch?
Regards
Manasi
> Signed-off-by: David Francis <David.Francis@xxxxxxx>
> ---
> drivers/gpu/drm/drm_dsc.c | 86 +++++++++++++++----------------
> drivers/gpu/drm/i915/intel_vdsc.c | 2 +-
> include/drm/drm_dsc.h | 2 +-
> 3 files changed, 45 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_dsc.c b/drivers/gpu/drm/drm_dsc.c
> index 9e675dd39a44..4ada4d4f59ac 100644
> --- a/drivers/gpu/drm/drm_dsc.c
> +++ b/drivers/gpu/drm/drm_dsc.c
> @@ -38,42 +38,42 @@ void drm_dsc_dp_pps_header_init(struct drm_dsc_pps_infoframe *pps_sdp)
> EXPORT_SYMBOL(drm_dsc_dp_pps_header_init);
>
> /**
> - * drm_dsc_pps_infoframe_pack() - Populates the DSC PPS infoframe
> + * drm_dsc_pps_payload_pack() - Populates the DSC PPS payload
> * using the DSC configuration parameters in the order expected
> * by the DSC Display Sink device. For the DSC, the sink device
> * expects the PPS payload in the big endian format for the fields
> * that span more than 1 byte.
> *
> - * @pps_sdp:
> - * Secondary data packet for DSC Picture Parameter Set
> + * @pps_payload:
> + * DSC Picture Parameter Set
> * @dsc_cfg:
> * DSC Configuration data filled by driver
> */
> -void drm_dsc_pps_infoframe_pack(struct drm_dsc_pps_infoframe *pps_sdp,
> +void drm_dsc_pps_payload_pack(struct drm_dsc_picture_parameter_set *pps_payload,
> const struct drm_dsc_config *dsc_cfg)
> {
> int i;
>
> /* Protect against someone accidently changing struct size */
> - BUILD_BUG_ON(sizeof(pps_sdp->pps_payload) !=
> + BUILD_BUG_ON(sizeof(*pps_payload) !=
> DP_SDP_PPS_HEADER_PAYLOAD_BYTES_MINUS_1 + 1);
>
> - memset(&pps_sdp->pps_payload, 0, sizeof(pps_sdp->pps_payload));
> + memset(pps_payload, 0, sizeof(*pps_payload));
>
> /* PPS 0 */
> - pps_sdp->pps_payload.dsc_version =
> + pps_payload->dsc_version =
> dsc_cfg->dsc_version_minor |
> dsc_cfg->dsc_version_major << DSC_PPS_VERSION_MAJOR_SHIFT;
>
> /* PPS 1, 2 is 0 */
>
> /* PPS 3 */
> - pps_sdp->pps_payload.pps_3 =
> + pps_payload->pps_3 =
> dsc_cfg->line_buf_depth |
> dsc_cfg->bits_per_component << DSC_PPS_BPC_SHIFT;
>
> /* PPS 4 */
> - pps_sdp->pps_payload.pps_4 =
> + pps_payload->pps_4 =
> ((dsc_cfg->bits_per_pixel & DSC_PPS_BPP_HIGH_MASK) >>
> DSC_PPS_MSB_SHIFT) |
> dsc_cfg->vbr_enable << DSC_PPS_VBR_EN_SHIFT |
> @@ -82,7 +82,7 @@ void drm_dsc_pps_infoframe_pack(struct drm_dsc_pps_infoframe *pps_sdp,
> dsc_cfg->block_pred_enable << DSC_PPS_BLOCK_PRED_EN_SHIFT;
>
> /* PPS 5 */
> - pps_sdp->pps_payload.bits_per_pixel_low =
> + pps_payload->bits_per_pixel_low =
> (dsc_cfg->bits_per_pixel & DSC_PPS_LSB_MASK);
>
> /*
> @@ -93,103 +93,103 @@ void drm_dsc_pps_infoframe_pack(struct drm_dsc_pps_infoframe *pps_sdp,
> */
>
> /* PPS 6, 7 */
> - pps_sdp->pps_payload.pic_height = cpu_to_be16(dsc_cfg->pic_height);
> + pps_payload->pic_height = cpu_to_be16(dsc_cfg->pic_height);
>
> /* PPS 8, 9 */
> - pps_sdp->pps_payload.pic_width = cpu_to_be16(dsc_cfg->pic_width);
> + pps_payload->pic_width = cpu_to_be16(dsc_cfg->pic_width);
>
> /* PPS 10, 11 */
> - pps_sdp->pps_payload.slice_height = cpu_to_be16(dsc_cfg->slice_height);
> + pps_payload->slice_height = cpu_to_be16(dsc_cfg->slice_height);
>
> /* PPS 12, 13 */
> - pps_sdp->pps_payload.slice_width = cpu_to_be16(dsc_cfg->slice_width);
> + pps_payload->slice_width = cpu_to_be16(dsc_cfg->slice_width);
>
> /* PPS 14, 15 */
> - pps_sdp->pps_payload.chunk_size = cpu_to_be16(dsc_cfg->slice_chunk_size);
> + pps_payload->chunk_size = cpu_to_be16(dsc_cfg->slice_chunk_size);
>
> /* PPS 16 */
> - pps_sdp->pps_payload.initial_xmit_delay_high =
> + pps_payload->initial_xmit_delay_high =
> ((dsc_cfg->initial_xmit_delay &
> DSC_PPS_INIT_XMIT_DELAY_HIGH_MASK) >>
> DSC_PPS_MSB_SHIFT);
>
> /* PPS 17 */
> - pps_sdp->pps_payload.initial_xmit_delay_low =
> + pps_payload->initial_xmit_delay_low =
> (dsc_cfg->initial_xmit_delay & DSC_PPS_LSB_MASK);
>
> /* PPS 18, 19 */
> - pps_sdp->pps_payload.initial_dec_delay =
> + pps_payload->initial_dec_delay =
> cpu_to_be16(dsc_cfg->initial_dec_delay);
>
> /* PPS 20 is 0 */
>
> /* PPS 21 */
> - pps_sdp->pps_payload.initial_scale_value =
> + pps_payload->initial_scale_value =
> dsc_cfg->initial_scale_value;
>
> /* PPS 22, 23 */
> - pps_sdp->pps_payload.scale_increment_interval =
> + pps_payload->scale_increment_interval =
> cpu_to_be16(dsc_cfg->scale_increment_interval);
>
> /* PPS 24 */
> - pps_sdp->pps_payload.scale_decrement_interval_high =
> + pps_payload->scale_decrement_interval_high =
> ((dsc_cfg->scale_decrement_interval &
> DSC_PPS_SCALE_DEC_INT_HIGH_MASK) >>
> DSC_PPS_MSB_SHIFT);
>
> /* PPS 25 */
> - pps_sdp->pps_payload.scale_decrement_interval_low =
> + pps_payload->scale_decrement_interval_low =
> (dsc_cfg->scale_decrement_interval & DSC_PPS_LSB_MASK);
>
> /* PPS 26[7:0], PPS 27[7:5] RESERVED */
>
> /* PPS 27 */
> - pps_sdp->pps_payload.first_line_bpg_offset =
> + pps_payload->first_line_bpg_offset =
> dsc_cfg->first_line_bpg_offset;
>
> /* PPS 28, 29 */
> - pps_sdp->pps_payload.nfl_bpg_offset =
> + pps_payload->nfl_bpg_offset =
> cpu_to_be16(dsc_cfg->nfl_bpg_offset);
>
> /* PPS 30, 31 */
> - pps_sdp->pps_payload.slice_bpg_offset =
> + pps_payload->slice_bpg_offset =
> cpu_to_be16(dsc_cfg->slice_bpg_offset);
>
> /* PPS 32, 33 */
> - pps_sdp->pps_payload.initial_offset =
> + pps_payload->initial_offset =
> cpu_to_be16(dsc_cfg->initial_offset);
>
> /* PPS 34, 35 */
> - pps_sdp->pps_payload.final_offset = cpu_to_be16(dsc_cfg->final_offset);
> + pps_payload->final_offset = cpu_to_be16(dsc_cfg->final_offset);
>
> /* PPS 36 */
> - pps_sdp->pps_payload.flatness_min_qp = dsc_cfg->flatness_min_qp;
> + pps_payload->flatness_min_qp = dsc_cfg->flatness_min_qp;
>
> /* PPS 37 */
> - pps_sdp->pps_payload.flatness_max_qp = dsc_cfg->flatness_max_qp;
> + pps_payload->flatness_max_qp = dsc_cfg->flatness_max_qp;
>
> /* PPS 38, 39 */
> - pps_sdp->pps_payload.rc_model_size =
> + pps_payload->rc_model_size =
> cpu_to_be16(DSC_RC_MODEL_SIZE_CONST);
>
> /* PPS 40 */
> - pps_sdp->pps_payload.rc_edge_factor = DSC_RC_EDGE_FACTOR_CONST;
> + pps_payload->rc_edge_factor = DSC_RC_EDGE_FACTOR_CONST;
>
> /* PPS 41 */
> - pps_sdp->pps_payload.rc_quant_incr_limit0 =
> + pps_payload->rc_quant_incr_limit0 =
> dsc_cfg->rc_quant_incr_limit0;
>
> /* PPS 42 */
> - pps_sdp->pps_payload.rc_quant_incr_limit1 =
> + pps_payload->rc_quant_incr_limit1 =
> dsc_cfg->rc_quant_incr_limit1;
>
> /* PPS 43 */
> - pps_sdp->pps_payload.rc_tgt_offset = DSC_RC_TGT_OFFSET_LO_CONST |
> + pps_payload->rc_tgt_offset = DSC_RC_TGT_OFFSET_LO_CONST |
> DSC_RC_TGT_OFFSET_HI_CONST << DSC_PPS_RC_TGT_OFFSET_HI_SHIFT;
>
> /* PPS 44 - 57 */
> for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++)
> - pps_sdp->pps_payload.rc_buf_thresh[i] =
> + pps_payload->rc_buf_thresh[i] =
> dsc_cfg->rc_buf_thresh[i];
>
> /* PPS 58 - 87 */
> @@ -198,35 +198,35 @@ void drm_dsc_pps_infoframe_pack(struct drm_dsc_pps_infoframe *pps_sdp,
> * are as follows: Min_qp[15:11], max_qp[10:6], offset[5:0]
> */
> for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
> - pps_sdp->pps_payload.rc_range_parameters[i] =
> + pps_payload->rc_range_parameters[i] =
> ((dsc_cfg->rc_range_params[i].range_min_qp <<
> DSC_PPS_RC_RANGE_MINQP_SHIFT) |
> (dsc_cfg->rc_range_params[i].range_max_qp <<
> DSC_PPS_RC_RANGE_MAXQP_SHIFT) |
> (dsc_cfg->rc_range_params[i].range_bpg_offset));
> - pps_sdp->pps_payload.rc_range_parameters[i] =
> - cpu_to_be16(pps_sdp->pps_payload.rc_range_parameters[i]);
> + pps_payload->rc_range_parameters[i] =
> + cpu_to_be16(pps_payload->rc_range_parameters[i]);
> }
>
> /* PPS 88 */
> - pps_sdp->pps_payload.native_422_420 = dsc_cfg->native_422 |
> + pps_payload->native_422_420 = dsc_cfg->native_422 |
> dsc_cfg->native_420 << DSC_PPS_NATIVE_420_SHIFT;
>
> /* PPS 89 */
> - pps_sdp->pps_payload.second_line_bpg_offset =
> + pps_payload->second_line_bpg_offset =
> dsc_cfg->second_line_bpg_offset;
>
> /* PPS 90, 91 */
> - pps_sdp->pps_payload.nsl_bpg_offset =
> + pps_payload->nsl_bpg_offset =
> cpu_to_be16(dsc_cfg->nsl_bpg_offset);
>
> /* PPS 92, 93 */
> - pps_sdp->pps_payload.second_line_offset_adj =
> + pps_payload->second_line_offset_adj =
> cpu_to_be16(dsc_cfg->second_line_offset_adj);
>
> /* PPS 94 - 127 are O */
> }
> -EXPORT_SYMBOL(drm_dsc_pps_infoframe_pack);
> +EXPORT_SYMBOL(drm_dsc_pps_payload_pack);
>
> /**
> * drm_dsc_compute_rc_parameters() - Write rate control
> diff --git a/drivers/gpu/drm/i915/intel_vdsc.c b/drivers/gpu/drm/i915/intel_vdsc.c
> index 7702c5c8b3f2..223c7b6c6e78 100644
> --- a/drivers/gpu/drm/i915/intel_vdsc.c
> +++ b/drivers/gpu/drm/i915/intel_vdsc.c
> @@ -885,7 +885,7 @@ static void intel_dp_write_dsc_pps_sdp(struct intel_encoder *encoder,
> drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp);
>
> /* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
> - drm_dsc_pps_infoframe_pack(&dp_dsc_pps_sdp, vdsc_cfg);
> + drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg);
>
> intel_dig_port->write_infoframe(encoder, crtc_state,
> DP_SDP_PPS, &dp_dsc_pps_sdp,
> diff --git a/include/drm/drm_dsc.h b/include/drm/drm_dsc.h
> index 4e55e37943d7..3bed1f119576 100644
> --- a/include/drm/drm_dsc.h
> +++ b/include/drm/drm_dsc.h
> @@ -479,7 +479,7 @@ struct drm_dsc_pps_infoframe {
> } __packed;
>
> void drm_dsc_dp_pps_header_init(struct drm_dsc_pps_infoframe *pps_sdp);
> -void drm_dsc_pps_infoframe_pack(struct drm_dsc_pps_infoframe *pps_sdp,
> +void drm_dsc_pps_payload_pack(struct drm_dsc_picture_parameter_set *pps_sdp,
> const struct drm_dsc_config *dsc_cfg);
> int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg);
>
> --
> 2.17.1
>
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