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/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _DPU_HW_CDM_H
#define _DPU_HW_CDM_H
#include "dpu_hw_mdss.h"
#include "dpu_hw_top.h"
#include "dpu_hw_blk.h"
struct dpu_hw_cdm;
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;
u32 output_type;
int flags;
};
enum dpu_hw_cdwn_type {
CDM_CDWN_DISABLE,
CDM_CDWN_PIXEL_DROP,
CDM_CDWN_AVG,
CDM_CDWN_COSITE,
CDM_CDWN_OFFSITE,
};
enum dpu_hw_cdwn_output_type {
CDM_CDWN_OUTPUT_HDMI,
CDM_CDWN_OUTPUT_WB,
};
enum dpu_hw_cdwn_output_bit_depth {
CDM_CDWN_OUTPUT_8BIT,
CDM_CDWN_OUTPUT_10BIT,
};
/**
* struct dpu_hw_cdm_ops : Interface to the chroma down Hw driver functions
* Assumption is these functions will be called after
* clocks are enabled
* @setup_csc: Programs the csc matrix
* @setup_cdwn: Sets up the chroma down sub module
* @enable: Enables the output to interface and programs the
* output packer
* @disable: Puts the cdm in bypass mode
*/
struct dpu_hw_cdm_ops {
/**
* Programs the CSC matrix for conversion from RGB space to YUV space,
* it is optional to call this function as this matrix is automatically
* set during initialization, user should call this if it wants
* to program a different matrix than default matrix.
* @cdm: Pointer to the chroma down context structure
* @data Pointer to CSC configuration data
* return: 0 if success; error code otherwise
*/
int (*setup_csc_data)(struct dpu_hw_cdm *cdm,
struct dpu_csc_cfg *data);
/**
* Programs the Chroma downsample part.
* @cdm Pointer to chroma down context
*/
int (*setup_cdwn)(struct dpu_hw_cdm *cdm,
struct dpu_hw_cdm_cfg *cfg);
/**
* Enable the CDM module
* @cdm Pointer to chroma down context
*/
int (*enable)(struct dpu_hw_cdm *cdm,
struct dpu_hw_cdm_cfg *cfg);
/**
* Disable the CDM module
* @cdm Pointer to chroma down context
*/
void (*disable)(struct dpu_hw_cdm *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;
/* mdp top hw driver */
struct dpu_hw_mdp *hw_mdp;
/* ops */
struct dpu_hw_cdm_ops ops;
};
/**
* dpu_hw_cdm - convert base object dpu_hw_base to container
* @hw: Pointer to base hardware block
* return: Pointer to hardware block container
*/
static inline struct dpu_hw_cdm *to_dpu_hw_cdm(struct dpu_hw_blk *hw)
{
return container_of(hw, struct dpu_hw_cdm, base);
}
/**
* dpu_hw_cdm_init - initializes the cdm hw driver object.
* should be called once before accessing every cdm.
* @idx: cdm index for which driver object is required
* @addr: mapped register io address of MDP
* @m : pointer to mdss catalog data
* @hw_mdp: pointer to mdp top hw driver object
*/
struct dpu_hw_cdm *dpu_hw_cdm_init(enum dpu_cdm idx,
void __iomem *addr,
struct dpu_mdss_cfg *m,
struct dpu_hw_mdp *hw_mdp);
/**
* dpu_hw_cdm_destroy - destroys CDM driver context
* @cdm: pointer to CDM driver context
*/
void dpu_hw_cdm_destroy(struct dpu_hw_cdm *cdm);
#endif /*_DPU_HW_CDM_H */
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