| Message ID | 20211007070900.456044-3-vkoul@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | None | expand |
On 07/10/2021 10:08, Vinod Koul wrote: > Display Stream Compression (DSC) is one of the hw blocks in dpu, so add > support by adding hw blocks for DSC > > Signed-off-by: Vinod Koul <vkoul@kernel.org> > --- > Changes since > v1: > - remove unused variable lp > - Update copyright year > RFC: > - Drop unused enums > > drivers/gpu/drm/msm/Makefile | 1 + > .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 13 ++ > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 210 ++++++++++++++++++ > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h | 77 +++++++ > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 13 ++ > 5 files changed, 314 insertions(+) > create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c > create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h > > diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile > index 904535eda0c4..46c05e401d04 100644 > --- a/drivers/gpu/drm/msm/Makefile > +++ b/drivers/gpu/drm/msm/Makefile > @@ -60,6 +60,7 @@ msm-y := \ > disp/dpu1/dpu_formats.o \ > disp/dpu1/dpu_hw_catalog.o \ > disp/dpu1/dpu_hw_ctl.o \ > + disp/dpu1/dpu_hw_dsc.o \ > disp/dpu1/dpu_hw_interrupts.o \ > disp/dpu1/dpu_hw_intf.o \ > disp/dpu1/dpu_hw_lm.o \ > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > index d2a945a27cfa..699c378814b1 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h > @@ -553,6 +553,16 @@ struct dpu_merge_3d_cfg { > const struct dpu_merge_3d_sub_blks *sblk; > }; > > +/** > + * struct dpu_dsc_cfg - information of DSC blocks > + * @id enum identifying this block > + * @base register offset of this block > + * @features bit mask identifying sub-blocks/features > + */ > +struct dpu_dsc_cfg { > + DPU_HW_BLK_INFO; > +}; > + > /** > * struct dpu_intf_cfg - information of timing engine blocks > * @id enum identifying this block > @@ -757,6 +767,9 @@ struct dpu_mdss_cfg { > u32 merge_3d_count; > const struct dpu_merge_3d_cfg *merge_3d; > > + u32 dsc_count; > + struct dpu_dsc_cfg *dsc; > + > u32 intf_count; > const struct dpu_intf_cfg *intf; > > 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 000000000000..09682c4832ba > --- /dev/null > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c > @@ -0,0 +1,210 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2020-2021, 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 msm_display_dsc_config *dsc, u32 mode) > +{ > + struct dpu_hw_blk_reg_map *c = &hw_dsc->hw; > + u32 data, lsb, bpp; > + u32 initial_lines = dsc->initial_lines; > + bool is_cmd_mode = !(mode & BIT(2)); DSC_MODE_VIDEO > + > + DPU_REG_WRITE(c, DSC_COMMON_MODE, mode); > + > + if (is_cmd_mode) > + initial_lines += 1; > + > + data = (initial_lines << 20); > + data |= ((dsc->slice_last_group_size - 1) << 18); > + /* bpp is 6.4 format, 4 LSBs bits are for fractional part */ > + data |= dsc->drm->bits_per_pixel << 12; > + lsb = dsc->drm->bits_per_pixel % 4; > + bpp = dsc->drm->bits_per_pixel / 4; > + bpp *= 4; > + bpp <<= 4; > + bpp |= lsb; > + > + data |= bpp << 8; > + data |= (dsc->drm->block_pred_enable << 7); > + data |= (dsc->drm->line_buf_depth << 3); > + data |= (dsc->drm->simple_422 << 2); > + data |= (dsc->drm->convert_rgb << 1); > + data |= dsc->drm->bits_per_component; > + > + DPU_REG_WRITE(c, DSC_ENC, data); > + > + data = dsc->drm->pic_width << 16; > + data |= dsc->drm->pic_height; > + DPU_REG_WRITE(c, DSC_PICTURE, data); > + > + data = dsc->drm->slice_width << 16; > + data |= dsc->drm->slice_height; > + DPU_REG_WRITE(c, DSC_SLICE, data); > + > + data = dsc->drm->slice_chunk_size << 16; > + DPU_REG_WRITE(c, DSC_CHUNK_SIZE, data); > + > + data = dsc->drm->initial_dec_delay << 16; > + data |= dsc->drm->initial_xmit_delay; > + DPU_REG_WRITE(c, DSC_DELAY, data); > + > + data = dsc->drm->initial_scale_value; > + DPU_REG_WRITE(c, DSC_SCALE_INITIAL, data); > + > + data = dsc->drm->scale_decrement_interval; > + DPU_REG_WRITE(c, DSC_SCALE_DEC_INTERVAL, data); > + > + data = dsc->drm->scale_increment_interval; > + DPU_REG_WRITE(c, DSC_SCALE_INC_INTERVAL, data); > + > + data = dsc->drm->first_line_bpg_offset; > + DPU_REG_WRITE(c, DSC_FIRST_LINE_BPG_OFFSET, data); > + > + data = dsc->drm->nfl_bpg_offset << 16; > + data |= dsc->drm->slice_bpg_offset; > + DPU_REG_WRITE(c, DSC_BPG_OFFSET, data); > + > + data = dsc->drm->initial_offset << 16; > + data |= dsc->drm->final_offset; > + DPU_REG_WRITE(c, DSC_DSC_OFFSET, data); > + > + data = dsc->det_thresh_flatness << 10; > + data |= dsc->drm->flatness_max_qp << 5; > + data |= dsc->drm->flatness_min_qp; > + DPU_REG_WRITE(c, DSC_FLATNESS, data); > + > + data = dsc->drm->rc_model_size; > + DPU_REG_WRITE(c, DSC_RC_MODEL_SIZE, data); > + > + data = dsc->drm->rc_tgt_offset_low << 18; > + data |= dsc->drm->rc_tgt_offset_high << 14; > + data |= dsc->drm->rc_quant_incr_limit1 << 9; > + data |= dsc->drm->rc_quant_incr_limit0 << 4; > + data |= dsc->drm->rc_edge_factor; > + DPU_REG_WRITE(c, DSC_RC, data); > +} > + > +static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc, > + struct msm_display_dsc_config *dsc) I thought that it might make sense to pass just drm_dsc_rc_range_parameters here, but it's a matter of personal preference. I won't insist on doing that. > +{ > + struct drm_dsc_rc_range_parameters *rc = dsc->drm->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->drm->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, > + 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->base_off = addr; > + b->blk_off = m->dsc[i].base; > + b->length = m->dsc[i].len; > + b->hwversion = m->hwversion; > + 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, > + 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); > +} > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h > new file mode 100644 > index 000000000000..648c9e4d8749 > --- /dev/null > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h > @@ -0,0 +1,77 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* Copyright (c) 2020-2021, Linaro Limited */ > + > +#ifndef _DPU_HW_DSC_H > +#define _DPU_HW_DSC_H > + > +#include <drm/drm_dsc.h> > + > +#define DSC_MODE_SPLIT_PANEL BIT(0) > +#define DSC_MODE_MULTIPLEX BIT(1) > +#define DSC_MODE_VIDEO BIT(2) > + > +struct dpu_hw_dsc; > + > +/** > + * struct dpu_hw_dsc_ops - interface to the dsc hardware driver functions > + * Assumption is these functions will be called after clocks are enabled > + */ > +struct dpu_hw_dsc_ops { > + /** > + * dsc_disable - disable dsc > + * @hw_dsc: Pointer to dsc context > + */ > + void (*dsc_disable)(struct dpu_hw_dsc *hw_dsc); > + > + /** > + * dsc_config - configures dsc encoder > + * @hw_dsc: Pointer to dsc context > + * @dsc: panel dsc parameters > + * @mode: dsc topology mode to be set > + */ > + void (*dsc_config)(struct dpu_hw_dsc *hw_dsc, > + struct msm_display_dsc_config *dsc, u32 mode); > + > + /** > + * dsc_config_thresh - programs panel thresholds > + * @hw_dsc: Pointer to dsc context > + * @dsc: panel dsc parameters > + */ > + void (*dsc_config_thresh)(struct dpu_hw_dsc *hw_dsc, > + struct msm_display_dsc_config *dsc); > +}; > + > +struct dpu_hw_dsc { > + struct dpu_hw_blk base; > + struct dpu_hw_blk_reg_map hw; > + > + /* dsc */ > + enum dpu_dsc idx; > + const struct dpu_dsc_cfg *caps; > + > + /* ops */ > + struct dpu_hw_dsc_ops ops; > +}; > + > +/** > + * dpu_hw_dsc_init - initializes the dsc block for the passed dsc idx. > + * @idx: DSC index for which driver object is required > + * @addr: Mapped register io address of MDP > + * @m: Pointer to mdss catalog data > + * Returns: Error code or allocated dpu_hw_dsc context > + */ > +struct dpu_hw_dsc *dpu_hw_dsc_init(enum dpu_dsc idx, void __iomem *addr, > + struct dpu_mdss_cfg *m); > + > +/** > + * dpu_hw_dsc_destroy - destroys dsc driver context > + * @dsc: Pointer to dsc driver context returned by dpu_hw_dsc_init > + */ > +void dpu_hw_dsc_destroy(struct dpu_hw_dsc *dsc); > + > +static inline struct dpu_hw_dsc *to_dpu_hw_dsc(struct dpu_hw_blk *hw) > +{ > + return container_of(hw, struct dpu_hw_dsc, base); > +} > + > +#endif /* _DPU_HW_DSC_H */ > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > index bb9ceadeb0bb..b0ce8cb97d22 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > @@ -97,6 +97,7 @@ enum dpu_hw_blk_type { > DPU_HW_BLK_WB, > DPU_HW_BLK_DSPP, > DPU_HW_BLK_MERGE_3D, > + DPU_HW_BLK_DSC, > DPU_HW_BLK_MAX, > }; > > @@ -176,6 +177,17 @@ enum dpu_ctl { > CTL_MAX > }; > > +enum dpu_dsc { > + DSC_NONE = 0, > + DSC_0, > + DSC_1, > + DSC_2, > + DSC_3, > + DSC_4, > + DSC_5, > + DSC_MAX > +}; > + > enum dpu_pingpong { > PINGPONG_0 = 1, > PINGPONG_1, > @@ -437,5 +449,6 @@ struct dpu_mdss_color { > #define DPU_DBG_MASK_VBIF (1 << 8) > #define DPU_DBG_MASK_ROT (1 << 9) > #define DPU_DBG_MASK_DSPP (1 << 10) > +#define DPU_DBG_MASK_DSC (1 << 11) > > #endif /* _DPU_HW_MDSS_H */ > -- With best wishes Dmitry
On 14-10-21, 17:40, Dmitry Baryshkov wrote: > On 07/10/2021 10:08, Vinod Koul wrote: > > +static void dpu_hw_dsc_config(struct dpu_hw_dsc *hw_dsc, > > + struct msm_display_dsc_config *dsc, u32 mode) > > +{ > > + struct dpu_hw_blk_reg_map *c = &hw_dsc->hw; > > + u32 data, lsb, bpp; > > + u32 initial_lines = dsc->initial_lines; > > + bool is_cmd_mode = !(mode & BIT(2)); > > DSC_MODE_VIDEO Updated > > +static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc, > > + struct msm_display_dsc_config *dsc) > > I thought that it might make sense to pass just drm_dsc_rc_range_parameters > here, but it's a matter of personal preference. I won't insist on doing > that. This is called from encoder, so prefer not to have encoder invoke dsc->drm->rc_range_params So will keep this. -- ~Vinod
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 904535eda0c4..46c05e401d04 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -60,6 +60,7 @@ msm-y := \ disp/dpu1/dpu_formats.o \ disp/dpu1/dpu_hw_catalog.o \ disp/dpu1/dpu_hw_ctl.o \ + disp/dpu1/dpu_hw_dsc.o \ disp/dpu1/dpu_hw_interrupts.o \ disp/dpu1/dpu_hw_intf.o \ disp/dpu1/dpu_hw_lm.o \ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h index d2a945a27cfa..699c378814b1 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h @@ -553,6 +553,16 @@ struct dpu_merge_3d_cfg { const struct dpu_merge_3d_sub_blks *sblk; }; +/** + * struct dpu_dsc_cfg - information of DSC blocks + * @id enum identifying this block + * @base register offset of this block + * @features bit mask identifying sub-blocks/features + */ +struct dpu_dsc_cfg { + DPU_HW_BLK_INFO; +}; + /** * struct dpu_intf_cfg - information of timing engine blocks * @id enum identifying this block @@ -757,6 +767,9 @@ struct dpu_mdss_cfg { u32 merge_3d_count; const struct dpu_merge_3d_cfg *merge_3d; + u32 dsc_count; + struct dpu_dsc_cfg *dsc; + u32 intf_count; const struct dpu_intf_cfg *intf; 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 000000000000..09682c4832ba --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020-2021, 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 msm_display_dsc_config *dsc, u32 mode) +{ + struct dpu_hw_blk_reg_map *c = &hw_dsc->hw; + u32 data, lsb, bpp; + u32 initial_lines = dsc->initial_lines; + bool is_cmd_mode = !(mode & BIT(2)); + + DPU_REG_WRITE(c, DSC_COMMON_MODE, mode); + + if (is_cmd_mode) + initial_lines += 1; + + data = (initial_lines << 20); + data |= ((dsc->slice_last_group_size - 1) << 18); + /* bpp is 6.4 format, 4 LSBs bits are for fractional part */ + data |= dsc->drm->bits_per_pixel << 12; + lsb = dsc->drm->bits_per_pixel % 4; + bpp = dsc->drm->bits_per_pixel / 4; + bpp *= 4; + bpp <<= 4; + bpp |= lsb; + + data |= bpp << 8; + data |= (dsc->drm->block_pred_enable << 7); + data |= (dsc->drm->line_buf_depth << 3); + data |= (dsc->drm->simple_422 << 2); + data |= (dsc->drm->convert_rgb << 1); + data |= dsc->drm->bits_per_component; + + DPU_REG_WRITE(c, DSC_ENC, data); + + data = dsc->drm->pic_width << 16; + data |= dsc->drm->pic_height; + DPU_REG_WRITE(c, DSC_PICTURE, data); + + data = dsc->drm->slice_width << 16; + data |= dsc->drm->slice_height; + DPU_REG_WRITE(c, DSC_SLICE, data); + + data = dsc->drm->slice_chunk_size << 16; + DPU_REG_WRITE(c, DSC_CHUNK_SIZE, data); + + data = dsc->drm->initial_dec_delay << 16; + data |= dsc->drm->initial_xmit_delay; + DPU_REG_WRITE(c, DSC_DELAY, data); + + data = dsc->drm->initial_scale_value; + DPU_REG_WRITE(c, DSC_SCALE_INITIAL, data); + + data = dsc->drm->scale_decrement_interval; + DPU_REG_WRITE(c, DSC_SCALE_DEC_INTERVAL, data); + + data = dsc->drm->scale_increment_interval; + DPU_REG_WRITE(c, DSC_SCALE_INC_INTERVAL, data); + + data = dsc->drm->first_line_bpg_offset; + DPU_REG_WRITE(c, DSC_FIRST_LINE_BPG_OFFSET, data); + + data = dsc->drm->nfl_bpg_offset << 16; + data |= dsc->drm->slice_bpg_offset; + DPU_REG_WRITE(c, DSC_BPG_OFFSET, data); + + data = dsc->drm->initial_offset << 16; + data |= dsc->drm->final_offset; + DPU_REG_WRITE(c, DSC_DSC_OFFSET, data); + + data = dsc->det_thresh_flatness << 10; + data |= dsc->drm->flatness_max_qp << 5; + data |= dsc->drm->flatness_min_qp; + DPU_REG_WRITE(c, DSC_FLATNESS, data); + + data = dsc->drm->rc_model_size; + DPU_REG_WRITE(c, DSC_RC_MODEL_SIZE, data); + + data = dsc->drm->rc_tgt_offset_low << 18; + data |= dsc->drm->rc_tgt_offset_high << 14; + data |= dsc->drm->rc_quant_incr_limit1 << 9; + data |= dsc->drm->rc_quant_incr_limit0 << 4; + data |= dsc->drm->rc_edge_factor; + DPU_REG_WRITE(c, DSC_RC, data); +} + +static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc, + struct msm_display_dsc_config *dsc) +{ + struct drm_dsc_rc_range_parameters *rc = dsc->drm->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->drm->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, + 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->base_off = addr; + b->blk_off = m->dsc[i].base; + b->length = m->dsc[i].len; + b->hwversion = m->hwversion; + 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, + 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); +} diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h new file mode 100644 index 000000000000..648c9e4d8749 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (c) 2020-2021, Linaro Limited */ + +#ifndef _DPU_HW_DSC_H +#define _DPU_HW_DSC_H + +#include <drm/drm_dsc.h> + +#define DSC_MODE_SPLIT_PANEL BIT(0) +#define DSC_MODE_MULTIPLEX BIT(1) +#define DSC_MODE_VIDEO BIT(2) + +struct dpu_hw_dsc; + +/** + * struct dpu_hw_dsc_ops - interface to the dsc hardware driver functions + * Assumption is these functions will be called after clocks are enabled + */ +struct dpu_hw_dsc_ops { + /** + * dsc_disable - disable dsc + * @hw_dsc: Pointer to dsc context + */ + void (*dsc_disable)(struct dpu_hw_dsc *hw_dsc); + + /** + * dsc_config - configures dsc encoder + * @hw_dsc: Pointer to dsc context + * @dsc: panel dsc parameters + * @mode: dsc topology mode to be set + */ + void (*dsc_config)(struct dpu_hw_dsc *hw_dsc, + struct msm_display_dsc_config *dsc, u32 mode); + + /** + * dsc_config_thresh - programs panel thresholds + * @hw_dsc: Pointer to dsc context + * @dsc: panel dsc parameters + */ + void (*dsc_config_thresh)(struct dpu_hw_dsc *hw_dsc, + struct msm_display_dsc_config *dsc); +}; + +struct dpu_hw_dsc { + struct dpu_hw_blk base; + struct dpu_hw_blk_reg_map hw; + + /* dsc */ + enum dpu_dsc idx; + const struct dpu_dsc_cfg *caps; + + /* ops */ + struct dpu_hw_dsc_ops ops; +}; + +/** + * dpu_hw_dsc_init - initializes the dsc block for the passed dsc idx. + * @idx: DSC index for which driver object is required + * @addr: Mapped register io address of MDP + * @m: Pointer to mdss catalog data + * Returns: Error code or allocated dpu_hw_dsc context + */ +struct dpu_hw_dsc *dpu_hw_dsc_init(enum dpu_dsc idx, void __iomem *addr, + struct dpu_mdss_cfg *m); + +/** + * dpu_hw_dsc_destroy - destroys dsc driver context + * @dsc: Pointer to dsc driver context returned by dpu_hw_dsc_init + */ +void dpu_hw_dsc_destroy(struct dpu_hw_dsc *dsc); + +static inline struct dpu_hw_dsc *to_dpu_hw_dsc(struct dpu_hw_blk *hw) +{ + return container_of(hw, struct dpu_hw_dsc, base); +} + +#endif /* _DPU_HW_DSC_H */ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h index bb9ceadeb0bb..b0ce8cb97d22 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h @@ -97,6 +97,7 @@ enum dpu_hw_blk_type { DPU_HW_BLK_WB, DPU_HW_BLK_DSPP, DPU_HW_BLK_MERGE_3D, + DPU_HW_BLK_DSC, DPU_HW_BLK_MAX, }; @@ -176,6 +177,17 @@ enum dpu_ctl { CTL_MAX }; +enum dpu_dsc { + DSC_NONE = 0, + DSC_0, + DSC_1, + DSC_2, + DSC_3, + DSC_4, + DSC_5, + DSC_MAX +}; + enum dpu_pingpong { PINGPONG_0 = 1, PINGPONG_1, @@ -437,5 +449,6 @@ struct dpu_mdss_color { #define DPU_DBG_MASK_VBIF (1 << 8) #define DPU_DBG_MASK_ROT (1 << 9) #define DPU_DBG_MASK_DSPP (1 << 10) +#define DPU_DBG_MASK_DSC (1 << 11) #endif /* _DPU_HW_MDSS_H */
Display Stream Compression (DSC) is one of the hw blocks in dpu, so add support by adding hw blocks for DSC Signed-off-by: Vinod Koul <vkoul@kernel.org> --- Changes since v1: - remove unused variable lp - Update copyright year RFC: - Drop unused enums drivers/gpu/drm/msm/Makefile | 1 + .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 13 ++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 210 ++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h | 77 +++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 13 ++ 5 files changed, 314 insertions(+) create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h -- 2.31.1