CDM block comes with its own set of registers and operations which can be done. In-line with other hardware blocks, this change adds the dpu_hw_cdm abstraction for the CDM block. changes in v4: - used FIELD_PREP() for dpu_hw_cdm_setup_cdwn() operations - change to lowercase hex in dpu_hw_cdm_bind_pingpong_blk() - move disable assignment inside else in dpu_hw_cdm_bind_pingpong_blk() changes in v3: - fix commit text from sub-blk to blk for CDM - fix kbot issue for missing static for dpu_hw_cdm_enable() - fix kbot issue for incorrect documentation style - add more documentation for enums and struct in dpu_hw_cdm.h - drop "enable" parameter from bind_pingpong_blk() as we can just use PINGPONG_NONE for disable cases - drop unnecessary bit operation for zero value of cdm_cfg changes in v2: - replace bit magic with relevant defines - use drmm_kzalloc instead of kzalloc/free - some formatting fixes - inline _setup_cdm_ops() - protect bind_pingpong_blk with core_rev check - drop setup_csc_data() and setup_cdwn() ops as they are merged into enable() Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202312101815.B3ZH7Pfy-lkp@xxxxxxxxx/ Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> --- drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c | 245 ++++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h | 142 ++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 1 + 4 files changed, 389 insertions(+) create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 49671364fdcf..b1173128b5b9 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -63,6 +63,7 @@ msm-$(CONFIG_DRM_MSM_DPU) += \ disp/dpu1/dpu_encoder_phys_wb.o \ disp/dpu1/dpu_formats.o \ disp/dpu1/dpu_hw_catalog.o \ + disp/dpu1/dpu_hw_cdm.o \ disp/dpu1/dpu_hw_ctl.o \ disp/dpu1/dpu_hw_dsc.o \ disp/dpu1/dpu_hw_dsc_1_2.o \ diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c new file mode 100644 index 000000000000..050c6aa40720 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.c @@ -0,0 +1,245 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, The Linux Foundation. All rights reserved. + */ + +#include <drm/drm_managed.h> + +#include "dpu_hw_mdss.h" +#include "dpu_hw_util.h" +#include "dpu_hw_catalog.h" +#include "dpu_hw_cdm.h" +#include "dpu_kms.h" + +#define CDM_CSC_10_OPMODE 0x000 +#define CDM_CSC_10_BASE 0x004 + +#define CDM_CDWN2_OP_MODE 0x100 +#define CDM_CDWN2_CLAMP_OUT 0x104 +#define CDM_CDWN2_PARAMS_3D_0 0x108 +#define CDM_CDWN2_PARAMS_3D_1 0x10C +#define CDM_CDWN2_COEFF_COSITE_H_0 0x110 +#define CDM_CDWN2_COEFF_COSITE_H_1 0x114 +#define CDM_CDWN2_COEFF_COSITE_H_2 0x118 +#define CDM_CDWN2_COEFF_OFFSITE_H_0 0x11C +#define CDM_CDWN2_COEFF_OFFSITE_H_1 0x120 +#define CDM_CDWN2_COEFF_OFFSITE_H_2 0x124 +#define CDM_CDWN2_COEFF_COSITE_V 0x128 +#define CDM_CDWN2_COEFF_OFFSITE_V 0x12C +#define CDM_CDWN2_OUT_SIZE 0x130 + +#define CDM_HDMI_PACK_OP_MODE 0x200 +#define CDM_CSC_10_MATRIX_COEFF_0 0x004 + +#define CDM_MUX 0x224 + +/* CDM CDWN2 sub-block bit definitions */ +#define CDM_CDWN2_OP_MODE_EN BIT(0) +#define CDM_CDWN2_OP_MODE_ENABLE_H BIT(1) +#define CDM_CDWN2_OP_MODE_ENABLE_V BIT(2) +#define CDM_CDWN2_OP_MODE_BITS_OUT_8BIT BIT(7) +#define CDM_CDWN2_V_PIXEL_METHOD_MASK GENMASK(6, 5) +#define CDM_CDWN2_H_PIXEL_METHOD_MASK GENMASK(4, 3) + +/* CDM CSC10 sub-block bit definitions */ +#define CDM_CSC10_OP_MODE_EN BIT(0) +#define CDM_CSC10_OP_MODE_SRC_FMT_YUV BIT(1) +#define CDM_CSC10_OP_MODE_DST_FMT_YUV BIT(2) + +/* CDM HDMI pack sub-block bit definitions */ +#define CDM_HDMI_PACK_OP_MODE_EN BIT(0) + +/* + * Horizontal coefficients for cosite chroma downscale + * s13 representation of coefficients + */ +static u32 cosite_h_coeff[] = {0x00000016, 0x000001cc, 0x0100009e}; + +/* + * Horizontal coefficients for offsite chroma downscale + */ +static u32 offsite_h_coeff[] = {0x000b0005, 0x01db01eb, 0x00e40046}; + +/* + * Vertical coefficients for cosite chroma downscale + */ +static u32 cosite_v_coeff[] = {0x00080004}; +/* + * Vertical coefficients for offsite chroma downscale + */ +static u32 offsite_v_coeff[] = {0x00060002}; + +static int dpu_hw_cdm_setup_cdwn(struct dpu_hw_cdm *ctx, struct dpu_hw_cdm_cfg *cfg) +{ + struct dpu_hw_blk_reg_map *c = &ctx->hw; + u32 opmode; + u32 out_size; + + switch (cfg->h_cdwn_type) { + case CDM_CDWN_DISABLE: + opmode = 0; + break; + case CDM_CDWN_PIXEL_DROP: + opmode = CDM_CDWN2_OP_MODE_ENABLE_H | + FIELD_PREP(CDM_CDWN2_H_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_PIXEL_DROP); + break; + case CDM_CDWN_AVG: + opmode = CDM_CDWN2_OP_MODE_ENABLE_H | + FIELD_PREP(CDM_CDWN2_H_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_AVG); + break; + case CDM_CDWN_COSITE: + opmode = CDM_CDWN2_OP_MODE_ENABLE_H | + FIELD_PREP(CDM_CDWN2_H_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_COSITE); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_COSITE_H_0, + cosite_h_coeff[0]); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_COSITE_H_1, + cosite_h_coeff[1]); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_COSITE_H_2, + cosite_h_coeff[2]); + break; + case CDM_CDWN_OFFSITE: + opmode = CDM_CDWN2_OP_MODE_ENABLE_H | + FIELD_PREP(CDM_CDWN2_H_PIXEL_METHOD_MASK, CDM_CDWN2_METHOD_OFFSITE); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_OFFSITE_H_0, + offsite_h_coeff[0]); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_OFFSITE_H_1, + offsite_h_coeff[1]); + DPU_REG_WRITE(c, CDM_CDWN2_COEFF_OFFSITE_H_2, + offsite_h_coeff[2]); + break; + default: + DPU_ERROR("%s invalid horz down sampling type\n", __func__); + return -EINVAL; + } + + switch (cfg->v_cdwn_type) { + case CDM_CDWN_DISABLE: + /* if its only Horizontal downsample, we dont need to do anything here */ + break; + case CDM_CDWN_PIXEL_DROP: + opmode |= CDM_CDWN2_OP_MODE_ENABLE_V | + FIELD_PREP(CDM_CDWN2_V_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_PIXEL_DROP); + break; + case CDM_CDWN_AVG: + opmode |= CDM_CDWN2_OP_MODE_ENABLE_V | + FIELD_PREP(CDM_CDWN2_V_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_AVG); + break; + case CDM_CDWN_COSITE: + opmode |= CDM_CDWN2_OP_MODE_ENABLE_V | + FIELD_PREP(CDM_CDWN2_V_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_COSITE); + DPU_REG_WRITE(c, + CDM_CDWN2_COEFF_COSITE_V, + cosite_v_coeff[0]); + break; + case CDM_CDWN_OFFSITE: + opmode |= CDM_CDWN2_OP_MODE_ENABLE_V | + FIELD_PREP(CDM_CDWN2_V_PIXEL_METHOD_MASK, + CDM_CDWN2_METHOD_OFFSITE); + DPU_REG_WRITE(c, + CDM_CDWN2_COEFF_OFFSITE_V, + offsite_v_coeff[0]); + break; + default: + return -EINVAL; + } + + if (cfg->output_bit_depth != CDM_CDWN_OUTPUT_10BIT) + opmode |= CDM_CDWN2_OP_MODE_BITS_OUT_8BIT; + + if (cfg->v_cdwn_type || cfg->h_cdwn_type) + opmode |= CDM_CDWN2_OP_MODE_EN; /* EN CDWN module */ + else + opmode &= ~CDM_CDWN2_OP_MODE_EN; + + out_size = (cfg->output_width & 0xFFFF) | ((cfg->output_height & 0xFFFF) << 16); + DPU_REG_WRITE(c, CDM_CDWN2_OUT_SIZE, out_size); + DPU_REG_WRITE(c, CDM_CDWN2_OP_MODE, opmode); + DPU_REG_WRITE(c, CDM_CDWN2_CLAMP_OUT, ((0x3FF << 16) | 0x0)); + + return 0; +} + +static int dpu_hw_cdm_enable(struct dpu_hw_cdm *ctx, struct dpu_hw_cdm_cfg *cdm) +{ + struct dpu_hw_blk_reg_map *c = &ctx->hw; + const struct dpu_format *fmt; + u32 opmode = 0; + u32 csc = 0; + + if (!ctx || !cdm) + return -EINVAL; + + fmt = cdm->output_fmt; + + if (!DPU_FORMAT_IS_YUV(fmt)) + return -EINVAL; + + dpu_hw_csc_setup(&ctx->hw, CDM_CSC_10_MATRIX_COEFF_0, cdm->csc_cfg, true); + dpu_hw_cdm_setup_cdwn(ctx, cdm); + + if (cdm->output_type == CDM_CDWN_OUTPUT_HDMI) { + if (fmt->chroma_sample != DPU_CHROMA_H1V2) + return -EINVAL; /*unsupported format */ + opmode = CDM_HDMI_PACK_OP_MODE_EN; + opmode |= (fmt->chroma_sample << 1); + } + + csc |= CDM_CSC10_OP_MODE_DST_FMT_YUV; + csc &= ~CDM_CSC10_OP_MODE_SRC_FMT_YUV; + csc |= CDM_CSC10_OP_MODE_EN; + + if (ctx && ctx->ops.bind_pingpong_blk) + ctx->ops.bind_pingpong_blk(ctx, cdm->pp_id); + + DPU_REG_WRITE(c, CDM_CSC_10_OPMODE, csc); + DPU_REG_WRITE(c, CDM_HDMI_PACK_OP_MODE, opmode); + return 0; +} + +static void dpu_hw_cdm_bind_pingpong_blk(struct dpu_hw_cdm *ctx, const enum dpu_pingpong pp) +{ + struct dpu_hw_blk_reg_map *c; + int mux_cfg; + + c = &ctx->hw; + + mux_cfg = DPU_REG_READ(c, CDM_MUX); + mux_cfg &= ~0xf; + + if (pp) + mux_cfg |= (pp - PINGPONG_0) & 0x7; + else + mux_cfg |= 0xf; + + DPU_REG_WRITE(c, CDM_MUX, mux_cfg); +} + +struct dpu_hw_cdm *dpu_hw_cdm_init(struct drm_device *dev, + const struct dpu_cdm_cfg *cfg, void __iomem *addr, + const struct dpu_mdss_version *mdss_rev) +{ + struct dpu_hw_cdm *c; + + c = drmm_kzalloc(dev, sizeof(*c), GFP_KERNEL); + if (!c) + return ERR_PTR(-ENOMEM); + + c->hw.blk_addr = addr + cfg->base; + c->hw.log_mask = DPU_DBG_MASK_CDM; + + /* Assign ops */ + c->idx = cfg->id; + c->caps = cfg; + + c->ops.enable = dpu_hw_cdm_enable; + if (mdss_rev->core_major_ver >= 5) + c->ops.bind_pingpong_blk = dpu_hw_cdm_bind_pingpong_blk; + + return c; +} diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h new file mode 100644 index 000000000000..348424df87c6 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2023, The Linux Foundation. All rights reserved. + */ + +#ifndef _DPU_HW_CDM_H +#define _DPU_HW_CDM_H + +#include "dpu_hw_mdss.h" +#include "dpu_hw_top.h" + +struct dpu_hw_cdm; + +/** + * struct dpu_hw_cdm_cfg : current configuration of CDM block + * + * @output_width: output ROI width of CDM block + * @output_height: output ROI height of CDM block + * @output_bit_depth: output bit-depth of CDM block + * @h_cdwn_type: downsample type used for horizontal pixels + * @v_cdwn_type: downsample type used for vertical pixels + * @output_fmt: handle to dpu_format of CDM block + * @csc_cfg: handle to CSC matrix programmed for CDM block + * @output_type: interface to which CDM is paired (HDMI/WB) + * @pp_id: ping-pong block to which CDM is bound to + */ +struct dpu_hw_cdm_cfg { + u32 output_width; + u32 output_height; + u32 output_bit_depth; + u32 h_cdwn_type; + u32 v_cdwn_type; + const struct dpu_format *output_fmt; + const struct dpu_csc_cfg *csc_cfg; + u32 output_type; + int pp_id; +}; + +/* + * These values are used indicate which type of downsample is used + * in the horizontal/vertical direction for the CDM block. + */ +enum dpu_hw_cdwn_type { + CDM_CDWN_DISABLE, + CDM_CDWN_PIXEL_DROP, + CDM_CDWN_AVG, + CDM_CDWN_COSITE, + CDM_CDWN_OFFSITE, +}; + +/* + * CDM block can be paired with WB or HDMI block. These values match + * the input with which the CDM block is paired. + */ +enum dpu_hw_cdwn_output_type { + CDM_CDWN_OUTPUT_HDMI, + CDM_CDWN_OUTPUT_WB, +}; + +/* + * CDM block can give an 8-bit or 10-bit output. These values + * are used to indicate the output bit depth of CDM block + */ +enum dpu_hw_cdwn_output_bit_depth { + CDM_CDWN_OUTPUT_8BIT, + CDM_CDWN_OUTPUT_10BIT, +}; + +/* + * CDM block can downsample using different methods. These values + * are used to indicate the downsample method which can be used + * either in the horizontal or vertical direction. + */ +enum dpu_hw_cdwn_op_mode_method_h_v { + CDM_CDWN2_METHOD_PIXEL_DROP, + CDM_CDWN2_METHOD_AVG, + CDM_CDWN2_METHOD_COSITE, + CDM_CDWN2_METHOD_OFFSITE +}; + +/** + * struct dpu_hw_cdm_ops : Interface to the chroma down Hw driver functions + * Assumption is these functions will be called after + * clocks are enabled + * @enable: Enables the output to interface and programs the + * output packer + * @bind_pingpong_blk: enable/disable the connection with pingpong which + * will feed pixels to this cdm + */ +struct dpu_hw_cdm_ops { + /** + * Enable the CDM module + * @cdm Pointer to chroma down context + */ + int (*enable)(struct dpu_hw_cdm *cdm, struct dpu_hw_cdm_cfg *cfg); + + /** + * Enable/disable the connection with pingpong + * @cdm Pointer to chroma down context + * @pp pingpong block id. + */ + void (*bind_pingpong_blk)(struct dpu_hw_cdm *cdm, const enum dpu_pingpong pp); +}; + +/** + * struct dpu_hw_cdm - cdm description + * @base: Hardware block base structure + * @hw: Block hardware details + * @idx: CDM index + * @caps: Pointer to cdm_cfg + * @ops: handle to operations possible for this CDM + */ +struct dpu_hw_cdm { + struct dpu_hw_blk base; + struct dpu_hw_blk_reg_map hw; + + /* chroma down */ + const struct dpu_cdm_cfg *caps; + enum dpu_cdm idx; + + /* ops */ + struct dpu_hw_cdm_ops ops; +}; + +/** + * dpu_hw_cdm_init - initializes the cdm hw driver object. + * should be called once before accessing every cdm. + * @dev: DRM device handle + * @cdm: CDM catalog entry for which driver object is required + * @addr : mapped register io address of MDSS + * @mdss_rev: mdss hw core revision + */ +struct dpu_hw_cdm *dpu_hw_cdm_init(struct drm_device *dev, + const struct dpu_cdm_cfg *cdm, void __iomem *addr, + const struct dpu_mdss_version *mdss_rev); + +static inline struct dpu_hw_cdm *to_dpu_hw_cdm(struct dpu_hw_blk *hw) +{ + return container_of(hw, struct dpu_hw_cdm, base); +} + +#endif /*_DPU_HW_CDM_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 f319c8232ea5..9db4cf61bd29 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h @@ -466,6 +466,7 @@ struct dpu_mdss_color { #define DPU_DBG_MASK_ROT (1 << 9) #define DPU_DBG_MASK_DSPP (1 << 10) #define DPU_DBG_MASK_DSC (1 << 11) +#define DPU_DBG_MASK_CDM (1 << 12) /** * struct dpu_hw_tear_check - Struct contains parameters to configure -- 2.40.1
