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linux-zen-desktop/drivers/gpu/drm/i915/display/intel_vdsc.c

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// SPDX-License-Identifier: MIT
/*
* Copyright © 2018 Intel Corporation
*
* Author: Gaurav K Singh <gaurav.k.singh@intel.com>
* Manasi Navare <manasi.d.navare@intel.com>
*/
#include <linux/limits.h>
#include <drm/display/drm_dsc_helper.h>
#include "i915_drv.h"
#include "i915_reg.h"
#include "intel_crtc.h"
#include "intel_de.h"
#include "intel_display_types.h"
#include "intel_dsi.h"
#include "intel_qp_tables.h"
#include "intel_vdsc.h"
#include "intel_vdsc_regs.h"
bool intel_dsc_source_support(const struct intel_crtc_state *crtc_state)
{
const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
if (!HAS_DSC(i915))
return false;
if (DISPLAY_VER(i915) == 11 && cpu_transcoder == TRANSCODER_A)
return false;
return true;
}
static bool is_pipe_dsc(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
{
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
if (DISPLAY_VER(i915) >= 12)
return true;
if (cpu_transcoder == TRANSCODER_EDP ||
cpu_transcoder == TRANSCODER_DSI_0 ||
cpu_transcoder == TRANSCODER_DSI_1)
return false;
/* There's no pipe A DSC engine on ICL */
drm_WARN_ON(&i915->drm, crtc->pipe == PIPE_A);
return true;
}
static void
calculate_rc_params(struct drm_dsc_config *vdsc_cfg)
{
int bpc = vdsc_cfg->bits_per_component;
int bpp = vdsc_cfg->bits_per_pixel >> 4;
static const s8 ofs_und6[] = {
0, -2, -2, -4, -6, -6, -8, -8, -8, -10, -10, -12, -12, -12, -12
};
static const s8 ofs_und8[] = {
2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
};
static const s8 ofs_und12[] = {
2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12
};
static const s8 ofs_und15[] = {
10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12
};
int qp_bpc_modifier = (bpc - 8) * 2;
u32 res, buf_i, bpp_i;
if (vdsc_cfg->slice_height >= 8)
vdsc_cfg->first_line_bpg_offset =
12 + DIV_ROUND_UP((9 * min(34, vdsc_cfg->slice_height - 8)), 100);
else
vdsc_cfg->first_line_bpg_offset = 2 * (vdsc_cfg->slice_height - 1);
/* Our hw supports only 444 modes as of today */
if (bpp >= 12)
vdsc_cfg->initial_offset = 2048;
else if (bpp >= 10)
vdsc_cfg->initial_offset = 5632 - DIV_ROUND_UP(((bpp - 10) * 3584), 2);
else if (bpp >= 8)
vdsc_cfg->initial_offset = 6144 - DIV_ROUND_UP(((bpp - 8) * 512), 2);
else
vdsc_cfg->initial_offset = 6144;
/* initial_xmit_delay = rc_model_size/2/compression_bpp */
vdsc_cfg->initial_xmit_delay = DIV_ROUND_UP(DSC_RC_MODEL_SIZE_CONST, 2 * bpp);
vdsc_cfg->flatness_min_qp = 3 + qp_bpc_modifier;
vdsc_cfg->flatness_max_qp = 12 + qp_bpc_modifier;
vdsc_cfg->rc_quant_incr_limit0 = 11 + qp_bpc_modifier;
vdsc_cfg->rc_quant_incr_limit1 = 11 + qp_bpc_modifier;
bpp_i = (2 * (bpp - 6));
for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) {
u8 range_bpg_offset;
/* Read range_minqp and range_max_qp from qp tables */
vdsc_cfg->rc_range_params[buf_i].range_min_qp =
intel_lookup_range_min_qp(bpc, buf_i, bpp_i, vdsc_cfg->native_420);
vdsc_cfg->rc_range_params[buf_i].range_max_qp =
intel_lookup_range_max_qp(bpc, buf_i, bpp_i, vdsc_cfg->native_420);
/* Calculate range_bpg_offset */
if (bpp <= 6) {
range_bpg_offset = ofs_und6[buf_i];
} else if (bpp <= 8) {
res = DIV_ROUND_UP(((bpp - 6) * (ofs_und8[buf_i] - ofs_und6[buf_i])), 2);
range_bpg_offset = ofs_und6[buf_i] + res;
} else if (bpp <= 12) {
range_bpg_offset = ofs_und8[buf_i];
} else if (bpp <= 15) {
res = DIV_ROUND_UP(((bpp - 12) * (ofs_und15[buf_i] - ofs_und12[buf_i])), 3);
range_bpg_offset = ofs_und12[buf_i] + res;
} else {
range_bpg_offset = ofs_und15[buf_i];
}
vdsc_cfg->rc_range_params[buf_i].range_bpg_offset =
range_bpg_offset & DSC_RANGE_BPG_OFFSET_MASK;
}
}
static int intel_dsc_slice_dimensions_valid(struct intel_crtc_state *pipe_config,
struct drm_dsc_config *vdsc_cfg)
{
if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_RGB ||
pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) {
if (vdsc_cfg->slice_height > 4095)
return -EINVAL;
if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 15000)
return -EINVAL;
} else if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
if (vdsc_cfg->slice_width % 2)
return -EINVAL;
if (vdsc_cfg->slice_height % 2)
return -EINVAL;
if (vdsc_cfg->slice_height > 4094)
return -EINVAL;
if (vdsc_cfg->slice_height * vdsc_cfg->slice_width < 30000)
return -EINVAL;
}
return 0;
}
int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
{
struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct drm_dsc_config *vdsc_cfg = &pipe_config->dsc.config;
u16 compressed_bpp = pipe_config->dsc.compressed_bpp;
int err;
int ret;
vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
pipe_config->dsc.slice_count);
err = intel_dsc_slice_dimensions_valid(pipe_config, vdsc_cfg);
if (err) {
drm_dbg_kms(&dev_priv->drm, "Slice dimension requirements not met\n");
return err;
}
/*
* According to DSC 1.2 specs if colorspace is YCbCr then convert_rgb is 0
* else 1
*/
vdsc_cfg->convert_rgb = pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR420 &&
pipe_config->output_format != INTEL_OUTPUT_FORMAT_YCBCR444;
if (DISPLAY_VER(dev_priv) >= 14 &&
pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
vdsc_cfg->native_420 = true;
/* We do not support YcBCr422 as of now */
vdsc_cfg->native_422 = false;
vdsc_cfg->simple_422 = false;
/* Gen 11 does not support VBR */
vdsc_cfg->vbr_enable = false;
/* Gen 11 only supports integral values of bpp */
vdsc_cfg->bits_per_pixel = compressed_bpp << 4;
/*
* According to DSC 1.2 specs in Section 4.1 if native_420 is set:
* -We need to double the current bpp.
* -second_line_bpg_offset is 12 in general and equal to 2*(slice_height-1) if slice
* height < 8.
* -second_line_offset_adj is 512 as shown by emperical values to yeild best chroma
* preservation in second line.
* -nsl_bpg_offset is calculated as second_line_offset/slice_height -1 then rounded
* up to 16 fractional bits, we left shift second line offset by 11 to preserve 11
* fractional bits.
*/
if (vdsc_cfg->native_420) {
vdsc_cfg->bits_per_pixel <<= 1;
if (vdsc_cfg->slice_height >= 8)
vdsc_cfg->second_line_bpg_offset = 12;
else
vdsc_cfg->second_line_bpg_offset =
2 * (vdsc_cfg->slice_height - 1);
vdsc_cfg->second_line_offset_adj = 512;
vdsc_cfg->nsl_bpg_offset = DIV_ROUND_UP(vdsc_cfg->second_line_bpg_offset << 11,
vdsc_cfg->slice_height - 1);
}
vdsc_cfg->bits_per_component = pipe_config->pipe_bpp / 3;
drm_dsc_set_rc_buf_thresh(vdsc_cfg);
/*
* From XE_LPD onwards we supports compression bpps in steps of 1
* upto uncompressed bpp-1, hence add calculations for all the rc
* parameters
*/
if (DISPLAY_VER(dev_priv) >= 13) {
calculate_rc_params(vdsc_cfg);
} else {
if ((compressed_bpp == 8 ||
compressed_bpp == 12) &&
(vdsc_cfg->bits_per_component == 8 ||
vdsc_cfg->bits_per_component == 10 ||
vdsc_cfg->bits_per_component == 12))
ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_1_PRE_SCR);
else
ret = drm_dsc_setup_rc_params(vdsc_cfg, DRM_DSC_1_2_444);
if (ret)
return ret;
/*
* FIXME: verify that the hardware actually needs these
* modifications rather than them being simple typos.
*/
if (compressed_bpp == 6 &&
vdsc_cfg->bits_per_component == 8)
vdsc_cfg->rc_quant_incr_limit1 = 23;
if (compressed_bpp == 8 &&
vdsc_cfg->bits_per_component == 14)
vdsc_cfg->rc_range_params[0].range_bpg_offset = 0;
}
/*
* BitsPerComponent value determines mux_word_size:
* When BitsPerComponent is less than or 10bpc, muxWordSize will be equal to
* 48 bits otherwise 64
*/
if (vdsc_cfg->bits_per_component <= 10)
vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
else
vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
/* InitialScaleValue is a 6 bit value with 3 fractional bits (U3.3) */
vdsc_cfg->initial_scale_value = (vdsc_cfg->rc_model_size << 3) /
(vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset);
return 0;
}
enum intel_display_power_domain
intel_dsc_power_domain(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
{
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/*
* VDSC/joining uses a separate power well, PW2, and requires
* POWER_DOMAIN_TRANSCODER_VDSC_PW2 power domain in two cases:
*
* - ICL eDP/DSI transcoder
* - Display version 12 (except RKL) pipe A
*
* For any other pipe, VDSC/joining uses the power well associated with
* the pipe in use. Hence another reference on the pipe power domain
* will suffice. (Except no VDSC/joining on ICL pipe A.)
*/
if (DISPLAY_VER(i915) == 12 && !IS_ROCKETLAKE(i915) && pipe == PIPE_A)
return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
else if (is_pipe_dsc(crtc, cpu_transcoder))
return POWER_DOMAIN_PIPE(pipe);
else
return POWER_DOMAIN_TRANSCODER_VDSC_PW2;
}
static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
enum pipe pipe = crtc->pipe;
u32 pps_val = 0;
u32 rc_buf_thresh_dword[4];
u32 rc_range_params_dword[8];
u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1;
int i = 0;
if (crtc_state->bigjoiner_pipes)
num_vdsc_instances *= 2;
/* Populate PICTURE_PARAMETER_SET_0 registers */
pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor <<
DSC_VER_MIN_SHIFT |
vdsc_cfg->bits_per_component << DSC_BPC_SHIFT |
vdsc_cfg->line_buf_depth << DSC_LINE_BUF_DEPTH_SHIFT;
if (vdsc_cfg->dsc_version_minor == 2) {
pps_val |= DSC_ALT_ICH_SEL;
if (vdsc_cfg->native_420)
pps_val |= DSC_NATIVE_420_ENABLE;
if (vdsc_cfg->native_422)
pps_val |= DSC_NATIVE_422_ENABLE;
}
if (vdsc_cfg->block_pred_enable)
pps_val |= DSC_BLOCK_PREDICTION;
if (vdsc_cfg->convert_rgb)
pps_val |= DSC_COLOR_SPACE_CONVERSION;
if (vdsc_cfg->simple_422)
pps_val |= DSC_422_ENABLE;
if (vdsc_cfg->vbr_enable)
pps_val |= DSC_VBR_ENABLE;
drm_dbg_kms(&dev_priv->drm, "PPS0 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_0,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_0,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_0(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_1 registers */
pps_val = 0;
pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel);
drm_dbg_kms(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_1,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_1,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_1(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_2 registers */
pps_val = 0;
pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
drm_dbg_kms(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_2,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_2,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_2(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_2(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_3 registers */
pps_val = 0;
pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) |
DSC_SLICE_WIDTH(vdsc_cfg->slice_width);
drm_dbg_kms(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_3,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_3,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_3(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_3(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_4 registers */
pps_val = 0;
pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay);
drm_dbg_kms(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_4,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_4,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_4(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_4(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_5 registers */
pps_val = 0;
pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval);
drm_dbg_kms(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_5,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_5,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_5(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_6 registers */
pps_val = 0;
pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) |
DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) |
DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp);
drm_dbg_kms(&dev_priv->drm, "PPS6 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_6,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_6,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_6(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_7 registers */
pps_val = 0;
pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset);
drm_dbg_kms(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_7,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_7,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_7(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_7(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_8 registers */
pps_val = 0;
pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) |
DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset);
drm_dbg_kms(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_8,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_8,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_8(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_8(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_9 registers */
pps_val = 0;
pps_val |= DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) |
DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST);
drm_dbg_kms(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_9,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv, DSCC_PICTURE_PARAMETER_SET_9,
pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_9(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_9(pipe),
pps_val);
}
/* Populate PICTURE_PARAMETER_SET_10 registers */
pps_val = 0;
pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) |
DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) |
DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST);
drm_dbg_kms(&dev_priv->drm, "PPS10 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_10,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
DSCC_PICTURE_PARAMETER_SET_10, pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_10(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_10(pipe),
pps_val);
}
/* Populate Picture parameter set 16 */
pps_val = 0;
pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) /
vdsc_cfg->slice_width) |
DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height /
vdsc_cfg->slice_height);
drm_dbg_kms(&dev_priv->drm, "PPS16 = 0x%08x\n", pps_val);
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_PICTURE_PARAMETER_SET_16,
pps_val);
/*
* If 2 VDSC instances are needed, configure PPS for second
* VDSC
*/
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
DSCC_PICTURE_PARAMETER_SET_16, pps_val);
} else {
intel_de_write(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_16(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
ICL_DSC1_PICTURE_PARAMETER_SET_16(pipe),
pps_val);
}
if (DISPLAY_VER(dev_priv) >= 14) {
/* Populate PICTURE_PARAMETER_SET_17 registers */
pps_val = 0;
pps_val |= DSC_SL_BPG_OFFSET(vdsc_cfg->second_line_bpg_offset);
drm_dbg_kms(&dev_priv->drm, "PPS17 = 0x%08x\n", pps_val);
intel_de_write(dev_priv,
MTL_DSC0_PICTURE_PARAMETER_SET_17(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
MTL_DSC1_PICTURE_PARAMETER_SET_17(pipe),
pps_val);
/* Populate PICTURE_PARAMETER_SET_18 registers */
pps_val = 0;
pps_val |= DSC_NSL_BPG_OFFSET(vdsc_cfg->nsl_bpg_offset) |
DSC_SL_OFFSET_ADJ(vdsc_cfg->second_line_offset_adj);
drm_dbg_kms(&dev_priv->drm, "PPS18 = 0x%08x\n", pps_val);
intel_de_write(dev_priv,
MTL_DSC0_PICTURE_PARAMETER_SET_18(pipe),
pps_val);
if (crtc_state->dsc.dsc_split)
intel_de_write(dev_priv,
MTL_DSC1_PICTURE_PARAMETER_SET_18(pipe),
pps_val);
}
/* Populate the RC_BUF_THRESH registers */
memset(rc_buf_thresh_dword, 0, sizeof(rc_buf_thresh_dword));
for (i = 0; i < DSC_NUM_BUF_RANGES - 1; i++) {
rc_buf_thresh_dword[i / 4] |=
(u32)(vdsc_cfg->rc_buf_thresh[i] <<
BITS_PER_BYTE * (i % 4));
drm_dbg_kms(&dev_priv->drm, "RC_BUF_THRESH_%d = 0x%08x\n", i,
rc_buf_thresh_dword[i / 4]);
}
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0,
rc_buf_thresh_dword[0]);
intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_0_UDW,
rc_buf_thresh_dword[1]);
intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1,
rc_buf_thresh_dword[2]);
intel_de_write(dev_priv, DSCA_RC_BUF_THRESH_1_UDW,
rc_buf_thresh_dword[3]);
if (crtc_state->dsc.dsc_split) {
intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0,
rc_buf_thresh_dword[0]);
intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_0_UDW,
rc_buf_thresh_dword[1]);
intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1,
rc_buf_thresh_dword[2]);
intel_de_write(dev_priv, DSCC_RC_BUF_THRESH_1_UDW,
rc_buf_thresh_dword[3]);
}
} else {
intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0(pipe),
rc_buf_thresh_dword[0]);
intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_0_UDW(pipe),
rc_buf_thresh_dword[1]);
intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1(pipe),
rc_buf_thresh_dword[2]);
intel_de_write(dev_priv, ICL_DSC0_RC_BUF_THRESH_1_UDW(pipe),
rc_buf_thresh_dword[3]);
if (crtc_state->dsc.dsc_split) {
intel_de_write(dev_priv,
ICL_DSC1_RC_BUF_THRESH_0(pipe),
rc_buf_thresh_dword[0]);
intel_de_write(dev_priv,
ICL_DSC1_RC_BUF_THRESH_0_UDW(pipe),
rc_buf_thresh_dword[1]);
intel_de_write(dev_priv,
ICL_DSC1_RC_BUF_THRESH_1(pipe),
rc_buf_thresh_dword[2]);
intel_de_write(dev_priv,
ICL_DSC1_RC_BUF_THRESH_1_UDW(pipe),
rc_buf_thresh_dword[3]);
}
}
/* Populate the RC_RANGE_PARAMETERS registers */
memset(rc_range_params_dword, 0, sizeof(rc_range_params_dword));
for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
rc_range_params_dword[i / 2] |=
(u32)(((vdsc_cfg->rc_range_params[i].range_bpg_offset <<
RC_BPG_OFFSET_SHIFT) |
(vdsc_cfg->rc_range_params[i].range_max_qp <<
RC_MAX_QP_SHIFT) |
(vdsc_cfg->rc_range_params[i].range_min_qp <<
RC_MIN_QP_SHIFT)) << 16 * (i % 2));
drm_dbg_kms(&dev_priv->drm, "RC_RANGE_PARAM_%d = 0x%08x\n", i,
rc_range_params_dword[i / 2]);
}
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0,
rc_range_params_dword[0]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_0_UDW,
rc_range_params_dword[1]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1,
rc_range_params_dword[2]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_1_UDW,
rc_range_params_dword[3]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2,
rc_range_params_dword[4]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_2_UDW,
rc_range_params_dword[5]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3,
rc_range_params_dword[6]);
intel_de_write(dev_priv, DSCA_RC_RANGE_PARAMETERS_3_UDW,
rc_range_params_dword[7]);
if (crtc_state->dsc.dsc_split) {
intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_0,
rc_range_params_dword[0]);
intel_de_write(dev_priv,
DSCC_RC_RANGE_PARAMETERS_0_UDW,
rc_range_params_dword[1]);
intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_1,
rc_range_params_dword[2]);
intel_de_write(dev_priv,
DSCC_RC_RANGE_PARAMETERS_1_UDW,
rc_range_params_dword[3]);
intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_2,
rc_range_params_dword[4]);
intel_de_write(dev_priv,
DSCC_RC_RANGE_PARAMETERS_2_UDW,
rc_range_params_dword[5]);
intel_de_write(dev_priv, DSCC_RC_RANGE_PARAMETERS_3,
rc_range_params_dword[6]);
intel_de_write(dev_priv,
DSCC_RC_RANGE_PARAMETERS_3_UDW,
rc_range_params_dword[7]);
}
} else {
intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_0(pipe),
rc_range_params_dword[0]);
intel_de_write(dev_priv,
ICL_DSC0_RC_RANGE_PARAMETERS_0_UDW(pipe),
rc_range_params_dword[1]);
intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_1(pipe),
rc_range_params_dword[2]);
intel_de_write(dev_priv,
ICL_DSC0_RC_RANGE_PARAMETERS_1_UDW(pipe),
rc_range_params_dword[3]);
intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_2(pipe),
rc_range_params_dword[4]);
intel_de_write(dev_priv,
ICL_DSC0_RC_RANGE_PARAMETERS_2_UDW(pipe),
rc_range_params_dword[5]);
intel_de_write(dev_priv, ICL_DSC0_RC_RANGE_PARAMETERS_3(pipe),
rc_range_params_dword[6]);
intel_de_write(dev_priv,
ICL_DSC0_RC_RANGE_PARAMETERS_3_UDW(pipe),
rc_range_params_dword[7]);
if (crtc_state->dsc.dsc_split) {
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_0(pipe),
rc_range_params_dword[0]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_0_UDW(pipe),
rc_range_params_dword[1]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_1(pipe),
rc_range_params_dword[2]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_1_UDW(pipe),
rc_range_params_dword[3]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_2(pipe),
rc_range_params_dword[4]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_2_UDW(pipe),
rc_range_params_dword[5]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_3(pipe),
rc_range_params_dword[6]);
intel_de_write(dev_priv,
ICL_DSC1_RC_RANGE_PARAMETERS_3_UDW(pipe),
rc_range_params_dword[7]);
}
}
}
void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
struct mipi_dsi_device *dsi;
struct drm_dsc_picture_parameter_set pps;
enum port port;
if (!crtc_state->dsc.compression_enable)
return;
drm_dsc_pps_payload_pack(&pps, vdsc_cfg);
for_each_dsi_port(port, intel_dsi->ports) {
dsi = intel_dsi->dsi_hosts[port]->device;
mipi_dsi_picture_parameter_set(dsi, &pps);
mipi_dsi_compression_mode(dsi, true);
}
}
void intel_dsc_dp_pps_write(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
if (!crtc_state->dsc.compression_enable)
return;
/* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp.pps_header);
/* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
drm_dsc_pps_payload_pack(&dp_dsc_pps_sdp.pps_payload, vdsc_cfg);
dig_port->write_infoframe(encoder, crtc_state,
DP_SDP_PPS, &dp_dsc_pps_sdp,
sizeof(dp_dsc_pps_sdp));
}
static i915_reg_t dss_ctl1_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
{
return is_pipe_dsc(crtc, cpu_transcoder) ?
ICL_PIPE_DSS_CTL1(crtc->pipe) : DSS_CTL1;
}
static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_transcoder)
{
return is_pipe_dsc(crtc, cpu_transcoder) ?
ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2;
}
void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 dss_ctl1_val = 0;
if (crtc_state->bigjoiner_pipes && !crtc_state->dsc.compression_enable) {
if (intel_crtc_is_bigjoiner_slave(crtc_state))
dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE;
else
dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER;
intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
}
}
void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 dss_ctl1_val = 0;
u32 dss_ctl2_val = 0;
if (!crtc_state->dsc.compression_enable)
return;
intel_dsc_pps_configure(crtc_state);
dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE;
if (crtc_state->dsc.dsc_split) {
dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE;
dss_ctl1_val |= JOINER_ENABLE;
}
if (crtc_state->bigjoiner_pipes) {
dss_ctl1_val |= BIG_JOINER_ENABLE;
if (!intel_crtc_is_bigjoiner_slave(crtc_state))
dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE;
}
intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
intel_de_write(dev_priv, dss_ctl2_reg(crtc, crtc_state->cpu_transcoder), dss_ctl2_val);
}
void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* Disable only if either of them is enabled */
if (old_crtc_state->dsc.compression_enable ||
old_crtc_state->bigjoiner_pipes) {
intel_de_write(dev_priv, dss_ctl1_reg(crtc, old_crtc_state->cpu_transcoder), 0);
intel_de_write(dev_priv, dss_ctl2_reg(crtc, old_crtc_state->cpu_transcoder), 0);
}
}
void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
enum pipe pipe = crtc->pipe;
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
u32 dss_ctl1, dss_ctl2, pps0 = 0, pps1 = 0;
if (!intel_dsc_source_support(crtc_state))
return;
power_domain = intel_dsc_power_domain(crtc, cpu_transcoder);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return;
dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder));
dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder));
crtc_state->dsc.compression_enable = dss_ctl2 & LEFT_BRANCH_VDSC_ENABLE;
if (!crtc_state->dsc.compression_enable)
goto out;
crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) &&
(dss_ctl1 & JOINER_ENABLE);
/* FIXME: add more state readout as needed */
/* PPS0 & PPS1 */
if (!is_pipe_dsc(crtc, cpu_transcoder)) {
pps1 = intel_de_read(dev_priv, DSCA_PICTURE_PARAMETER_SET_1);
} else {
pps0 = intel_de_read(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_0(pipe));
pps1 = intel_de_read(dev_priv,
ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe));
}
vdsc_cfg->bits_per_pixel = pps1;
if (pps0 & DSC_NATIVE_420_ENABLE)
vdsc_cfg->bits_per_pixel >>= 1;
crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4;
out:
intel_display_power_put(dev_priv, power_domain, wakeref);
}
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