diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_cdm.h | 142 |
1 files changed, 142 insertions, 0 deletions
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 */ |