diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c new file mode 100644 index 000000000..3662df698 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020-2022, Linaro Limited + */ + +#include "dpu_kms.h" +#include "dpu_hw_catalog.h" +#include "dpu_hwio.h" +#include "dpu_hw_mdss.h" +#include "dpu_hw_dsc.h" + +#define DSC_COMMON_MODE 0x000 +#define DSC_ENC 0x004 +#define DSC_PICTURE 0x008 +#define DSC_SLICE 0x00C +#define DSC_CHUNK_SIZE 0x010 +#define DSC_DELAY 0x014 +#define DSC_SCALE_INITIAL 0x018 +#define DSC_SCALE_DEC_INTERVAL 0x01C +#define DSC_SCALE_INC_INTERVAL 0x020 +#define DSC_FIRST_LINE_BPG_OFFSET 0x024 +#define DSC_BPG_OFFSET 0x028 +#define DSC_DSC_OFFSET 0x02C +#define DSC_FLATNESS 0x030 +#define DSC_RC_MODEL_SIZE 0x034 +#define DSC_RC 0x038 +#define DSC_RC_BUF_THRESH 0x03C +#define DSC_RANGE_MIN_QP 0x074 +#define DSC_RANGE_MAX_QP 0x0B0 +#define DSC_RANGE_BPG_OFFSET 0x0EC + +static void dpu_hw_dsc_disable(struct dpu_hw_dsc *dsc) +{ + struct dpu_hw_blk_reg_map *c = &dsc->hw; + + DPU_REG_WRITE(c, DSC_COMMON_MODE, 0); +} + +static void dpu_hw_dsc_config(struct dpu_hw_dsc *hw_dsc, + struct drm_dsc_config *dsc, + u32 mode, + u32 initial_lines) +{ + struct dpu_hw_blk_reg_map *c = &hw_dsc->hw; + u32 data; + u32 slice_last_group_size; + u32 det_thresh_flatness; + bool is_cmd_mode = !(mode & DSC_MODE_VIDEO); + + DPU_REG_WRITE(c, DSC_COMMON_MODE, mode); + + if (is_cmd_mode) + initial_lines += 1; + + slice_last_group_size = 3 - (dsc->slice_width % 3); + data = (initial_lines << 20); + data |= ((slice_last_group_size - 1) << 18); + /* bpp is 6.4 format, 4 LSBs bits are for fractional part */ + data |= (dsc->bits_per_pixel << 8); + data |= (dsc->block_pred_enable << 7); + data |= (dsc->line_buf_depth << 3); + data |= (dsc->simple_422 << 2); + data |= (dsc->convert_rgb << 1); + data |= dsc->bits_per_component; + + DPU_REG_WRITE(c, DSC_ENC, data); + + data = dsc->pic_width << 16; + data |= dsc->pic_height; + DPU_REG_WRITE(c, DSC_PICTURE, data); + + data = dsc->slice_width << 16; + data |= dsc->slice_height; + DPU_REG_WRITE(c, DSC_SLICE, data); + + data = dsc->slice_chunk_size << 16; + DPU_REG_WRITE(c, DSC_CHUNK_SIZE, data); + + data = dsc->initial_dec_delay << 16; + data |= dsc->initial_xmit_delay; + DPU_REG_WRITE(c, DSC_DELAY, data); + + data = dsc->initial_scale_value; + DPU_REG_WRITE(c, DSC_SCALE_INITIAL, data); + + data = dsc->scale_decrement_interval; + DPU_REG_WRITE(c, DSC_SCALE_DEC_INTERVAL, data); + + data = dsc->scale_increment_interval; + DPU_REG_WRITE(c, DSC_SCALE_INC_INTERVAL, data); + + data = dsc->first_line_bpg_offset; + DPU_REG_WRITE(c, DSC_FIRST_LINE_BPG_OFFSET, data); + + data = dsc->nfl_bpg_offset << 16; + data |= dsc->slice_bpg_offset; + DPU_REG_WRITE(c, DSC_BPG_OFFSET, data); + + data = dsc->initial_offset << 16; + data |= dsc->final_offset; + DPU_REG_WRITE(c, DSC_DSC_OFFSET, data); + + det_thresh_flatness = 7 + 2 * (dsc->bits_per_component - 8); + data = det_thresh_flatness << 10; + data |= dsc->flatness_max_qp << 5; + data |= dsc->flatness_min_qp; + DPU_REG_WRITE(c, DSC_FLATNESS, data); + + data = dsc->rc_model_size; + DPU_REG_WRITE(c, DSC_RC_MODEL_SIZE, data); + + data = dsc->rc_tgt_offset_low << 18; + data |= dsc->rc_tgt_offset_high << 14; + data |= dsc->rc_quant_incr_limit1 << 9; + data |= dsc->rc_quant_incr_limit0 << 4; + data |= dsc->rc_edge_factor; + DPU_REG_WRITE(c, DSC_RC, data); +} + +static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc, + struct drm_dsc_config *dsc) +{ + struct drm_dsc_rc_range_parameters *rc = dsc->rc_range_params; + struct dpu_hw_blk_reg_map *c = &hw_dsc->hw; + u32 off; + int i; + + off = DSC_RC_BUF_THRESH; + for (i = 0; i < DSC_NUM_BUF_RANGES - 1 ; i++) { + DPU_REG_WRITE(c, off, dsc->rc_buf_thresh[i]); + off += 4; + } + + off = DSC_RANGE_MIN_QP; + for (i = 0; i < DSC_NUM_BUF_RANGES; i++) { + DPU_REG_WRITE(c, off, rc[i].range_min_qp); + off += 4; + } + + off = DSC_RANGE_MAX_QP; + for (i = 0; i < 15; i++) { + DPU_REG_WRITE(c, off, rc[i].range_max_qp); + off += 4; + } + + off = DSC_RANGE_BPG_OFFSET; + for (i = 0; i < 15; i++) { + DPU_REG_WRITE(c, off, rc[i].range_bpg_offset); + off += 4; + } +} + +static struct dpu_dsc_cfg *_dsc_offset(enum dpu_dsc dsc, + const struct dpu_mdss_cfg *m, + void __iomem *addr, + struct dpu_hw_blk_reg_map *b) +{ + int i; + + for (i = 0; i < m->dsc_count; i++) { + if (dsc == m->dsc[i].id) { + b->blk_addr = addr + m->dsc[i].base; + b->log_mask = DPU_DBG_MASK_DSC; + return &m->dsc[i]; + } + } + + return NULL; +} + +static void _setup_dsc_ops(struct dpu_hw_dsc_ops *ops, + unsigned long cap) +{ + ops->dsc_disable = dpu_hw_dsc_disable; + ops->dsc_config = dpu_hw_dsc_config; + ops->dsc_config_thresh = dpu_hw_dsc_config_thresh; +}; + +struct dpu_hw_dsc *dpu_hw_dsc_init(enum dpu_dsc idx, void __iomem *addr, + const struct dpu_mdss_cfg *m) +{ + struct dpu_hw_dsc *c; + struct dpu_dsc_cfg *cfg; + + c = kzalloc(sizeof(*c), GFP_KERNEL); + if (!c) + return ERR_PTR(-ENOMEM); + + cfg = _dsc_offset(idx, m, addr, &c->hw); + if (IS_ERR_OR_NULL(cfg)) { + kfree(c); + return ERR_PTR(-EINVAL); + } + + c->idx = idx; + c->caps = cfg; + _setup_dsc_ops(&c->ops, c->caps->features); + + return c; +} + +void dpu_hw_dsc_destroy(struct dpu_hw_dsc *dsc) +{ + kfree(dsc); +} |