android_kernel_xiaomi_sm8350/msm/sde_dsc_helper.c
Abhijit Kulkarni 6244f0a8f8 disp: msm: sde: fix dsc 1_2 rate control parameter
This change fixes the rate control parameter namely
first_line_bpg_offset as per recommended hardware
settings.

Change-Id: I88cfc745443cdf6b96a8fca01306dec8a7572b1f
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>
2020-11-23 09:16:03 -08:00

554 lines
16 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2012-2020 The Linux Foundation. All rights reserved.
*/
#include "msm_drv.h"
#include "sde_dsc_helper.h"
#include "sde_kms.h"
#define SDE_DSC_PPS_SIZE 128
enum sde_dsc_ratio_type {
DSC_V11_8BPC_8BPP,
DSC_V11_10BPC_8BPP,
DSC_V11_10BPC_10BPP,
DSC_V11_SCR1_8BPC_8BPP,
DSC_V11_SCR1_10BPC_8BPP,
DSC_V11_SCR1_10BPC_10BPP,
DSC_V12_444_8BPC_8BPP = DSC_V11_SCR1_8BPC_8BPP,
DSC_V12_444_10BPC_8BPP = DSC_V11_SCR1_10BPC_8BPP,
DSC_V12_444_10BPC_10BPP = DSC_V11_SCR1_10BPC_10BPP,
DSC_V12_422_8BPC_7BPP,
DSC_V12_422_8BPC_8BPP,
DSC_V12_422_10BPC_7BPP,
DSC_V12_422_10BPC_10BPP,
DSC_V12_420_8BPC_6BPP,
DSC_V12_420_10BPC_6BPP,
DSC_V12_420_10BPC_7_5BPP,
DSC_RATIO_TYPE_MAX
};
static u16 sde_dsc_rc_buf_thresh[DSC_NUM_BUF_RANGES - 1] =
{0x0e, 0x1c, 0x2a, 0x38, 0x46, 0x54,
0x62, 0x69, 0x70, 0x77, 0x79, 0x7b, 0x7d, 0x7e};
/*
* Rate control - Min QP values for each ratio type in sde_dsc_ratio_type
*/
static char sde_dsc_rc_range_min_qp[DSC_RATIO_TYPE_MAX][DSC_NUM_BUF_RANGES] = {
/* DSC v1.1 */
{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 13},
{0, 4, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 9, 11, 17},
{0, 4, 5, 6, 7, 7, 7, 7, 7, 7, 9, 9, 9, 11, 15},
/* DSC v1.1 SCR and DSC v1.2 RGB 444 */
{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 9, 12},
{0, 4, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 9, 13, 16},
{0, 4, 5, 6, 7, 7, 7, 7, 7, 7, 9, 9, 9, 11, 15},
/* DSC v1.2 YUV422 */
{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 10},
{0, 4, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 9, 13, 16},
{0, 4, 9, 9, 11, 11, 11, 11, 11, 11, 13, 13, 13, 17, 20},
{0, 2, 3, 4, 5, 5, 5, 6, 6, 7, 8, 8, 9, 11, 12},
/* DSC v1.2 YUV420 */
{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 10},
{0, 2, 3, 4, 6, 7, 7, 7, 7, 7, 9, 9, 9, 11, 14},
{0, 2, 3, 4, 5, 5, 5, 6, 6, 7, 8, 8, 9, 11, 12},
};
/*
* Rate control - Max QP values for each ratio type in sde_dsc_ratio_type
*/
static char sde_dsc_rc_range_max_qp[DSC_RATIO_TYPE_MAX][DSC_NUM_BUF_RANGES] = {
/* DSC v1.1 */
{4, 4, 5, 6, 7, 7, 7, 8, 9, 10, 11, 12, 13, 13, 15},
{4, 8, 9, 10, 11, 11, 11, 12, 13, 14, 15, 16, 17, 17, 19},
{7, 8, 9, 10, 11, 11, 11, 12, 13, 13, 14, 14, 15, 15, 16},
/* DSC v1.1 SCR and DSC v1.2 RGB 444 */
{4, 4, 5, 6, 7, 7, 7, 8, 9, 10, 10, 11, 11, 12, 13},
{8, 8, 9, 10, 11, 11, 11, 12, 13, 14, 14, 15, 15, 16, 17},
{7, 8, 9, 10, 11, 11, 11, 12, 13, 13, 14, 14, 15, 15, 16},
/* DSC v1.2 YUV422 */
{3, 4, 5, 6, 7, 7, 7, 8, 9, 9, 10, 10, 11, 11, 12},
{2, 4, 5, 6, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 11},
{7, 8, 9, 10, 11, 11, 11, 12, 13, 13, 14, 14, 15, 15, 16},
{2, 5, 5, 6, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12, 13},
/* DSC v1.2 YUV420 */
{2, 4, 5, 6, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 12},
{2, 5, 7, 8, 9, 10, 11, 12, 12, 13, 13, 13, 13, 14, 15},
{2, 5, 5, 6, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12, 13},
};
/*
* Rate control - bpg offset values for each ratio type in sde_dsc_ratio_type
*/
static char sde_dsc_rc_range_bpg[DSC_RATIO_TYPE_MAX][DSC_NUM_BUF_RANGES] = {
/* DSC v1.1 */
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12},
/* DSC v1.1 SCR and DSC V1.2 RGB 444 */
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12},
/* DSC v1.2 YUV422 */
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12},
{10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12},
/* DSC v1.2 YUV420 */
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12},
{10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12},
};
/**
* Maps to lookup the sde_dsc_ratio_type index used in rate control tables
*/
static struct sde_dsc_v1_1_table_index_lut {
int scr_ver;
u32 bpc;
u32 bpp;
u32 type;
} sde_dsc_v1_1_index_map[] = {
{0, 8, 8, DSC_V11_8BPC_8BPP},
{0, 10, 8, DSC_V11_10BPC_8BPP},
{0, 10, 10, DSC_V11_10BPC_10BPP},
{1, 8, 8, DSC_V11_SCR1_8BPC_8BPP},
{1, 10, 8, DSC_V11_SCR1_10BPC_8BPP},
{1, 10, 10, DSC_V11_SCR1_10BPC_10BPP},
};
static struct sde_dsc_v1_2_table_index_lut {
u32 fmt;
u32 bpc;
u32 bpp;
u32 type;
} sde_dsc_v1_2_index_map[] = {
{MSM_CHROMA_444, 8, 8, DSC_V12_444_8BPC_8BPP},
{MSM_CHROMA_444, 10, 8, DSC_V12_444_10BPC_8BPP},
{MSM_CHROMA_444, 10, 10, DSC_V12_444_10BPC_10BPP},
{MSM_CHROMA_422, 8, 7, DSC_V12_422_8BPC_7BPP},
{MSM_CHROMA_422, 8, 8, DSC_V12_422_8BPC_8BPP},
{MSM_CHROMA_422, 10, 7, DSC_V12_422_10BPC_7BPP},
{MSM_CHROMA_422, 10, 10, DSC_V12_422_10BPC_10BPP},
{MSM_CHROMA_420, 8, 6, DSC_V12_420_8BPC_6BPP},
{MSM_CHROMA_420, 10, 6, DSC_V12_420_10BPC_6BPP},
};
static int _get_rc_table_index(struct drm_dsc_config *dsc, int scr_ver)
{
u32 bpp, bpc, i, fmt = MSM_CHROMA_444;
if (dsc->dsc_version_major != 0x1) {
SDE_ERROR("unsupported major version %d\n",
dsc->dsc_version_major);
return -EINVAL;
}
bpc = dsc->bits_per_component;
bpp = DSC_BPP(*dsc);
if (dsc->native_422)
fmt = MSM_CHROMA_422;
else if (dsc->native_420)
fmt = MSM_CHROMA_420;
if (dsc->dsc_version_minor == 0x1) {
for (i = 0; i < ARRAY_SIZE(sde_dsc_v1_1_index_map); i++) {
if (bpc == sde_dsc_v1_1_index_map[i].bpc &&
bpp == sde_dsc_v1_1_index_map[i].bpp &&
scr_ver == sde_dsc_v1_1_index_map[i].scr_ver)
return sde_dsc_v1_1_index_map[i].type;
}
} else if (dsc->dsc_version_minor == 0x2) {
for (i = 0; i < ARRAY_SIZE(sde_dsc_v1_2_index_map); i++) {
if (bpc == sde_dsc_v1_2_index_map[i].bpc &&
bpp == sde_dsc_v1_2_index_map[i].bpp &&
fmt == sde_dsc_v1_2_index_map[i].fmt)
return sde_dsc_v1_2_index_map[i].type;
}
}
SDE_ERROR("unsupported DSC v%d.%dr%d, bpc:%d, bpp:%d, fmt:0x%x\n",
dsc->dsc_version_major, dsc->dsc_version_minor,
scr_ver, bpc, bpp, fmt);
return -EINVAL;
}
u8 _get_dsc_v1_2_bpg_offset(struct drm_dsc_config *dsc)
{
u8 bpg_offset = 0;
u8 uncompressed_bpg_rate;
u8 bpp = DSC_BPP(*dsc);
if (dsc->slice_height < 8)
bpg_offset = 2 * (dsc->slice_height - 1);
else if (dsc->slice_height < 20)
bpg_offset = 12;
else if (dsc->slice_height <= 30)
bpg_offset = 13;
else if (dsc->slice_height < 42)
bpg_offset = 14;
else
bpg_offset = 15;
if (dsc->native_422)
uncompressed_bpg_rate = 3 * bpp * 4;
else if (dsc->native_420)
uncompressed_bpg_rate = 3 * bpp;
else
uncompressed_bpg_rate = (3 * bpp + 2) * 3;
if (bpg_offset < (uncompressed_bpg_rate - (3 * bpp)))
return bpg_offset;
else
return (uncompressed_bpg_rate - (3 * bpp));
}
int sde_dsc_populate_dsc_config(struct drm_dsc_config *dsc, int scr_ver) {
int bpp, bpc;
int groups_per_line, groups_total;
int min_rate_buffer_size;
int hrd_delay;
int pre_num_extra_mux_bits, num_extra_mux_bits;
int slice_bits;
int data;
int final_value, final_scale;
int i, ratio_idx;
dsc->rc_model_size = 8192;
if ((dsc->dsc_version_major == 0x1) &&
(dsc->dsc_version_minor == 0x1)) {
if (scr_ver == 0x1)
dsc->first_line_bpg_offset = 15;
else
dsc->first_line_bpg_offset = 12;
} else if (dsc->dsc_version_minor == 0x2) {
dsc->first_line_bpg_offset = _get_dsc_v1_2_bpg_offset(dsc);
}
dsc->rc_edge_factor = 6;
dsc->rc_tgt_offset_high = 3;
dsc->rc_tgt_offset_low = 3;
dsc->simple_422 = 0;
dsc->convert_rgb = 1;
dsc->vbr_enable = 0;
bpp = DSC_BPP(*dsc);
bpc = dsc->bits_per_component;
ratio_idx = _get_rc_table_index(dsc, scr_ver);
if (ratio_idx == -EINVAL)
return ratio_idx;
for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++)
dsc->rc_buf_thresh[i] = sde_dsc_rc_buf_thresh[i];
for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
dsc->rc_range_params[i].range_min_qp =
sde_dsc_rc_range_min_qp[ratio_idx][i];
dsc->rc_range_params[i].range_max_qp =
sde_dsc_rc_range_max_qp[ratio_idx][i];
dsc->rc_range_params[i].range_bpg_offset =
sde_dsc_rc_range_bpg[ratio_idx][i];
}
if (bpp == 8) {
dsc->initial_offset = 6144;
dsc->initial_xmit_delay = 512;
} else if (bpp == 10) {
dsc->initial_offset = 5632;
dsc->initial_xmit_delay = 410;
} else {
dsc->initial_offset = 2048;
dsc->initial_xmit_delay = 341;
}
dsc->line_buf_depth = bpc + 1;
if (bpc == 8) {
dsc->flatness_min_qp = 3;
dsc->flatness_max_qp = 12;
dsc->rc_quant_incr_limit0 = 11;
dsc->rc_quant_incr_limit1 = 11;
dsc->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
} else if (bpc == 10) { /* 10bpc */
dsc->flatness_min_qp = 7;
dsc->flatness_max_qp = 16;
dsc->rc_quant_incr_limit0 = 15;
dsc->rc_quant_incr_limit1 = 15;
dsc->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
} else { /* 12 bpc */
dsc->flatness_min_qp = 11;
dsc->flatness_max_qp = 20;
dsc->rc_quant_incr_limit0 = 19;
dsc->rc_quant_incr_limit1 = 19;
dsc->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
}
if ((dsc->dsc_version_minor == 0x2) && (dsc->native_420)) {
dsc->second_line_bpg_offset = 12;
dsc->second_line_offset_adj = 512;
dsc->nsl_bpg_offset = 2048 *
(DIV_ROUND_UP(dsc->second_line_bpg_offset,
(dsc->slice_height - 1)));
}
groups_per_line = DIV_ROUND_UP(dsc->slice_width, 3);
dsc->slice_chunk_size = dsc->slice_width * bpp / 8;
if ((dsc->slice_width * bpp) % 8)
dsc->slice_chunk_size++;
/* rbs-min */
min_rate_buffer_size = dsc->rc_model_size - dsc->initial_offset +
dsc->initial_xmit_delay * bpp +
groups_per_line * dsc->first_line_bpg_offset;
hrd_delay = DIV_ROUND_UP(min_rate_buffer_size, bpp);
dsc->initial_dec_delay = hrd_delay - dsc->initial_xmit_delay;
dsc->initial_scale_value = 8 * dsc->rc_model_size /
(dsc->rc_model_size - dsc->initial_offset);
slice_bits = 8 * dsc->slice_chunk_size * dsc->slice_height;
groups_total = groups_per_line * dsc->slice_height;
data = dsc->first_line_bpg_offset * 2048;
dsc->nfl_bpg_offset = DIV_ROUND_UP(data, (dsc->slice_height - 1));
pre_num_extra_mux_bits = 3 * (dsc->mux_word_size + (4 * bpc + 4) - 2);
num_extra_mux_bits = pre_num_extra_mux_bits - (dsc->mux_word_size -
((slice_bits - pre_num_extra_mux_bits) % dsc->mux_word_size));
data = 2048 * (dsc->rc_model_size - dsc->initial_offset
+ num_extra_mux_bits);
dsc->slice_bpg_offset = DIV_ROUND_UP(data, groups_total);
data = dsc->initial_xmit_delay * bpp;
final_value = dsc->rc_model_size - data + num_extra_mux_bits;
final_scale = 8 * dsc->rc_model_size /
(dsc->rc_model_size - final_value);
dsc->final_offset = final_value;
data = (final_scale - 9) * (dsc->nfl_bpg_offset +
dsc->slice_bpg_offset);
dsc->scale_increment_interval = (2048 * dsc->final_offset) / data;
dsc->scale_decrement_interval = groups_per_line /
(dsc->initial_scale_value - 8);
return 0;
}
int sde_dsc_populate_dsc_private_params(struct msm_display_dsc_info *dsc_info,
int intf_width)
{
int mod_offset;
int slice_per_pkt, slice_per_intf;
int bytes_in_slice, total_bytes_per_intf;
u16 bpp;
u32 bytes_in_dsc_pair;
u32 total_bytes_in_dsc_pair;
if (!dsc_info || !dsc_info->config.slice_width ||
!dsc_info->config.slice_height ||
intf_width < dsc_info->config.slice_width) {
SDE_ERROR("invalid input, intf_width=%d slice_width=%d\n",
intf_width, dsc_info ? dsc_info->config.slice_width :
-1);
return -EINVAL;
}
mod_offset = dsc_info->config.slice_width % 3;
switch (mod_offset) {
case 0:
dsc_info->slice_last_group_size = 2;
break;
case 1:
dsc_info->slice_last_group_size = 0;
break;
case 2:
dsc_info->slice_last_group_size = 1;
break;
default:
break;
}
dsc_info->det_thresh_flatness =
2 << (dsc_info->config.bits_per_component - 8);
slice_per_pkt = dsc_info->slice_per_pkt;
slice_per_intf = DIV_ROUND_UP(intf_width,
dsc_info->config.slice_width);
/*
* If slice_per_pkt is greater than slice_per_intf then default to 1.
* This can happen during partial update.
*/
if (slice_per_pkt > slice_per_intf)
slice_per_pkt = 1;
bpp = DSC_BPP(dsc_info->config);
bytes_in_slice = DIV_ROUND_UP(dsc_info->config.slice_width *
bpp, 8);
total_bytes_per_intf = bytes_in_slice * slice_per_intf;
dsc_info->eol_byte_num = total_bytes_per_intf % 3;
dsc_info->pclk_per_line = DIV_ROUND_UP(total_bytes_per_intf, 3);
dsc_info->bytes_in_slice = bytes_in_slice;
dsc_info->bytes_per_pkt = bytes_in_slice * slice_per_pkt;
dsc_info->pkt_per_line = slice_per_intf / slice_per_pkt;
bytes_in_dsc_pair = DIV_ROUND_UP(bytes_in_slice * 2, 3);
if (bytes_in_dsc_pair % 8) {
dsc_info->dsc_4hsmerge_padding = 8 - (bytes_in_dsc_pair % 8);
total_bytes_in_dsc_pair = bytes_in_dsc_pair +
dsc_info->dsc_4hsmerge_padding;
if (total_bytes_in_dsc_pair % 16)
dsc_info->dsc_4hsmerge_alignment = 16 -
(total_bytes_in_dsc_pair % 16);
}
return 0;
}
int sde_dsc_create_pps_buf_cmd(struct msm_display_dsc_info *dsc_info,
char *buf, int pps_id, u32 len)
{
struct drm_dsc_config *dsc = &dsc_info->config;
char *bp = buf;
char data;
u32 i, bpp;
if (len < SDE_DSC_PPS_SIZE)
return -EINVAL;
memset(buf, 0, len);
/* pps0 */
*bp++ = (dsc->dsc_version_minor |
dsc->dsc_version_major << 4);
*bp++ = (pps_id & 0xff); /* pps1 */
bp++; /* pps2, reserved */
data = dsc->line_buf_depth & 0x0f;
data |= ((dsc->bits_per_component & 0xf) << DSC_PPS_BPC_SHIFT);
*bp++ = data; /* pps3 */
bpp = dsc->bits_per_pixel;
data = (bpp >> DSC_PPS_MSB_SHIFT);
data &= 0x03; /* upper two bits */
data |= ((dsc->block_pred_enable & 0x1) << 5);
data |= ((dsc->convert_rgb & 0x1) << 4);
data |= ((dsc->simple_422 & 0x1) << 3);
data |= ((dsc->vbr_enable & 0x1) << 2);
*bp++ = data; /* pps4 */
*bp++ = (bpp & DSC_PPS_LSB_MASK); /* pps5 */
*bp++ = ((dsc->pic_height >> 8) & 0xff); /* pps6 */
*bp++ = (dsc->pic_height & 0x0ff); /* pps7 */
*bp++ = ((dsc->pic_width >> 8) & 0xff); /* pps8 */
*bp++ = (dsc->pic_width & 0x0ff); /* pps9 */
*bp++ = ((dsc->slice_height >> 8) & 0xff);/* pps10 */
*bp++ = (dsc->slice_height & 0x0ff); /* pps11 */
*bp++ = ((dsc->slice_width >> 8) & 0xff); /* pps12 */
*bp++ = (dsc->slice_width & 0x0ff); /* pps13 */
*bp++ = ((dsc->slice_chunk_size >> 8) & 0xff);/* pps14 */
*bp++ = (dsc->slice_chunk_size & 0x0ff); /* pps15 */
*bp++ = (dsc->initial_xmit_delay >> 8) & 0x3; /* pps16 */
*bp++ = (dsc->initial_xmit_delay & 0xff);/* pps17 */
*bp++ = ((dsc->initial_dec_delay >> 8) & 0xff); /* pps18 */
*bp++ = (dsc->initial_dec_delay & 0xff);/* pps19 */
bp++; /* pps20, reserved */
*bp++ = (dsc->initial_scale_value & 0x3f); /* pps21 */
*bp++ = ((dsc->scale_increment_interval >> 8) & 0xff); /* pps22 */
*bp++ = (dsc->scale_increment_interval & 0xff); /* pps23 */
*bp++ = ((dsc->scale_decrement_interval >> 8) & 0xf); /* pps24 */
*bp++ = (dsc->scale_decrement_interval & 0x0ff);/* pps25 */
bp++; /* pps26, reserved */
*bp++ = (dsc->first_line_bpg_offset & 0x1f);/* pps27 */
*bp++ = ((dsc->nfl_bpg_offset >> 8) & 0xff);/* pps28 */
*bp++ = (dsc->nfl_bpg_offset & 0x0ff); /* pps29 */
*bp++ = ((dsc->slice_bpg_offset >> 8) & 0xff);/* pps30 */
*bp++ = (dsc->slice_bpg_offset & 0x0ff);/* pps31 */
*bp++ = ((dsc->initial_offset >> 8) & 0xff);/* pps32 */
*bp++ = (dsc->initial_offset & 0x0ff); /* pps33 */
*bp++ = ((dsc->final_offset >> 8) & 0xff);/* pps34 */
*bp++ = (dsc->final_offset & 0x0ff); /* pps35 */
*bp++ = (dsc->flatness_min_qp & 0x1f); /* pps36 */
*bp++ = (dsc->flatness_max_qp & 0x1f); /* pps37 */
*bp++ = ((dsc->rc_model_size >> 8) & 0xff);/* pps38 */
*bp++ = (dsc->rc_model_size & 0x0ff); /* pps39 */
*bp++ = (dsc->rc_edge_factor & 0x0f); /* pps40 */
*bp++ = (dsc->rc_quant_incr_limit0 & 0x1f); /* pps41 */
*bp++ = (dsc->rc_quant_incr_limit1 & 0x1f); /* pps42 */
data = ((dsc->rc_tgt_offset_high & 0xf) << 4);
data |= (dsc->rc_tgt_offset_low & 0x0f);
*bp++ = data; /* pps43 */
for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++)
*bp++ = (dsc->rc_buf_thresh[i] & 0xff); /* pps44 - pps57 */
for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
/* pps58 - pps87 */
data = (dsc->rc_range_params[i].range_min_qp & 0x1f);
data <<= 3;
data |= ((dsc->rc_range_params[i].range_max_qp >> 2) & 0x07);
*bp++ = data;
data = (dsc->rc_range_params[i].range_max_qp & 0x03);
data <<= 6;
data |= (dsc->rc_range_params[i].range_bpg_offset & 0x3f);
*bp++ = data;
}
if (dsc->dsc_version_minor == 0x2) {
if (dsc->native_422)
data = BIT(0);
else if (dsc->native_420)
data = BIT(1);
*bp++ = data; /* pps88 */
*bp++ = dsc->second_line_bpg_offset; /* pps89 */
*bp++ = ((dsc->nsl_bpg_offset >> 8) & 0xff);/* pps90 */
*bp++ = (dsc->nsl_bpg_offset & 0x0ff); /* pps91 */
*bp++ = ((dsc->second_line_offset_adj >> 8) & 0xff); /* pps92*/
*bp++ = (dsc->second_line_offset_adj & 0x0ff); /* pps93 */
/* rest bytes are reserved and set to 0 */
}
return 0;
}