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/* Copyright (c) 2015-2016, 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 _SDE_HW_PINGPONG_H
#define _SDE_HW_PINGPONG_H
struct sde_hw_pingpong;
struct sde_hw_tear_check {
/*
* This is ratio of MDP VSYNC clk freq(Hz) to
* refresh rate divided by no of lines
*/
u32 vsync_count;
u32 sync_cfg_height;
u32 vsync_init_val;
u32 sync_threshold_start;
u32 sync_threshold_continue;
u32 start_pos;
u32 rd_ptr_irq;
u8 hw_vsync_mode;
};
struct sde_hw_autorefresh {
bool enable;
u32 frame_count;
};
struct sde_hw_pp_vsync_info {
u32 init_val; /* value of rd pointer at vsync edge */
u32 vsync_count; /* mdp clocks to complete one line */
u32 line_count; /* current line count */
};
struct sde_hw_dsc_cfg {
u8 enable;
};
/**
*
* struct sde_hw_pingpong_ops : Interface to the pingpong Hw driver functions
* Assumption is these functions will be called after clocks are enabled
* @setup_tearcheck :
* @enable_tearcheck :
* @get_vsync_info :
* @setup_autorefresh :
* #setup_dsc :
*/
struct sde_hw_pingpong_ops {
/**
* enables vysnc generation and sets up init value of
* read pointer and programs the tear check cofiguration
*/
int (*setup_tearcheck)(struct sde_hw_pingpong *pp,
struct sde_hw_tear_check *cfg);
/**
* enables tear check block
*/
int (*enable_tearcheck)(struct sde_hw_pingpong *pp,
bool enable);
/**
* provides the programmed and current
* line_count
*/
int (*get_vsync_info)(struct sde_hw_pingpong *pp,
struct sde_hw_pp_vsync_info *info);
/**
* configure and enable the autorefresh config
*/
int (*setup_autorefresh)(struct sde_hw_pingpong *pp,
struct sde_hw_autorefresh *cfg);
/**
* Program the dsc compression block
*/
int (*setup_dsc)(struct sde_hw_pingpong *pp,
struct sde_hw_dsc_cfg *cfg);
};
struct sde_hw_pingpong {
/* base */
struct sde_hw_blk_reg_map hw;
/* pingpong */
enum sde_pingpong idx;
const struct sde_pingpong_cfg *pingpong_hw_cap;
/* ops */
struct sde_hw_pingpong_ops ops;
};
/**
* sde_hw_pingpong_init - initializes the pingpong driver for the passed
* pingpong idx.
* @idx: Pingpong 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 sde_hw_pingpong context
*/
struct sde_hw_pingpong *sde_hw_pingpong_init(enum sde_pingpong idx,
void __iomem *addr,
struct sde_mdss_cfg *m);
/**
* sde_hw_pingpong_destroy - destroys pingpong driver context
* should be called to free the context
* @pp: Pointer to PP driver context returned by sde_hw_pingpong_init
*/
void sde_hw_pingpong_destroy(struct sde_hw_pingpong *pp);
#endif /*_SDE_HW_PINGPONG_H */
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