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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@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202312101815.B3ZH7Pfy-lkp@intel.com/ Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/571824/ Link: https://lore.kernel.org/r/20231212205254.12422-8-quic_abhinavk@quicinc.com [DB: Added linux/bitfield.h inclusion] Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2023, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DPU_HW_CDM_H
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#define _DPU_HW_CDM_H
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#include "dpu_hw_mdss.h"
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#include "dpu_hw_top.h"
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struct dpu_hw_cdm;
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/**
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* struct dpu_hw_cdm_cfg : current configuration of CDM block
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*
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* @output_width: output ROI width of CDM block
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* @output_height: output ROI height of CDM block
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* @output_bit_depth: output bit-depth of CDM block
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* @h_cdwn_type: downsample type used for horizontal pixels
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* @v_cdwn_type: downsample type used for vertical pixels
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* @output_fmt: handle to dpu_format of CDM block
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* @csc_cfg: handle to CSC matrix programmed for CDM block
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* @output_type: interface to which CDM is paired (HDMI/WB)
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* @pp_id: ping-pong block to which CDM is bound to
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*/
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struct dpu_hw_cdm_cfg {
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u32 output_width;
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u32 output_height;
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u32 output_bit_depth;
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u32 h_cdwn_type;
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u32 v_cdwn_type;
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const struct dpu_format *output_fmt;
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const struct dpu_csc_cfg *csc_cfg;
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u32 output_type;
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int pp_id;
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};
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/*
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* These values are used indicate which type of downsample is used
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* in the horizontal/vertical direction for the CDM block.
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*/
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enum dpu_hw_cdwn_type {
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CDM_CDWN_DISABLE,
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CDM_CDWN_PIXEL_DROP,
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CDM_CDWN_AVG,
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CDM_CDWN_COSITE,
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CDM_CDWN_OFFSITE,
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};
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/*
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* CDM block can be paired with WB or HDMI block. These values match
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* the input with which the CDM block is paired.
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*/
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enum dpu_hw_cdwn_output_type {
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CDM_CDWN_OUTPUT_HDMI,
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CDM_CDWN_OUTPUT_WB,
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};
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/*
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* CDM block can give an 8-bit or 10-bit output. These values
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* are used to indicate the output bit depth of CDM block
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*/
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enum dpu_hw_cdwn_output_bit_depth {
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CDM_CDWN_OUTPUT_8BIT,
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CDM_CDWN_OUTPUT_10BIT,
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};
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/*
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* CDM block can downsample using different methods. These values
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* are used to indicate the downsample method which can be used
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* either in the horizontal or vertical direction.
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*/
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enum dpu_hw_cdwn_op_mode_method_h_v {
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CDM_CDWN2_METHOD_PIXEL_DROP,
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CDM_CDWN2_METHOD_AVG,
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CDM_CDWN2_METHOD_COSITE,
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CDM_CDWN2_METHOD_OFFSITE
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};
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/**
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* struct dpu_hw_cdm_ops : Interface to the chroma down Hw driver functions
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* Assumption is these functions will be called after
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* clocks are enabled
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* @enable: Enables the output to interface and programs the
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* output packer
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* @bind_pingpong_blk: enable/disable the connection with pingpong which
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* will feed pixels to this cdm
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*/
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struct dpu_hw_cdm_ops {
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/**
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* Enable the CDM module
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* @cdm Pointer to chroma down context
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*/
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int (*enable)(struct dpu_hw_cdm *cdm, struct dpu_hw_cdm_cfg *cfg);
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/**
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* Enable/disable the connection with pingpong
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* @cdm Pointer to chroma down context
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* @pp pingpong block id.
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*/
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void (*bind_pingpong_blk)(struct dpu_hw_cdm *cdm, const enum dpu_pingpong pp);
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};
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/**
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* struct dpu_hw_cdm - cdm description
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* @base: Hardware block base structure
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* @hw: Block hardware details
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* @idx: CDM index
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* @caps: Pointer to cdm_cfg
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* @ops: handle to operations possible for this CDM
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*/
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struct dpu_hw_cdm {
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struct dpu_hw_blk base;
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struct dpu_hw_blk_reg_map hw;
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/* chroma down */
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const struct dpu_cdm_cfg *caps;
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enum dpu_cdm idx;
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/* ops */
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struct dpu_hw_cdm_ops ops;
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};
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/**
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* dpu_hw_cdm_init - initializes the cdm hw driver object.
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* should be called once before accessing every cdm.
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* @dev: DRM device handle
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* @cdm: CDM catalog entry for which driver object is required
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* @addr : mapped register io address of MDSS
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* @mdss_rev: mdss hw core revision
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*/
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struct dpu_hw_cdm *dpu_hw_cdm_init(struct drm_device *dev,
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const struct dpu_cdm_cfg *cdm, void __iomem *addr,
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const struct dpu_mdss_version *mdss_rev);
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static inline struct dpu_hw_cdm *to_dpu_hw_cdm(struct dpu_hw_blk *hw)
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{
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return container_of(hw, struct dpu_hw_cdm, base);
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}
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#endif /*_DPU_HW_CDM_H */
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