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/* Copyright (c) 2012, 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
* GNU General Public License for more details.
#ifndef __MDSS_IO_UTIL_H__
#define __MDSS_IO_UTIL_H__
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/i2c.h>
#include <linux/types.h>
#ifdef DEBUG
#define DEV_DBG(fmt, args...) pr_err(fmt, ##args)
#define DEV_DBG(fmt, args...) pr_debug(fmt, ##args)
#define DEV_INFO(fmt, args...) pr_info(fmt, ##args)
#define DEV_WARN(fmt, args...) pr_warn(fmt, ##args)
#define DEV_ERR(fmt, args...) pr_err(fmt, ##args)
struct dss_io_data {
u32 len;
void __iomem *base;
void dss_reg_w(struct dss_io_data *io, u32 offset, u32 value, u32 debug);
u32 dss_reg_r(struct dss_io_data *io, u32 offset, u32 debug);
void dss_reg_dump(void __iomem *base, u32 len, const char *prefix, u32 debug);
#define DSS_REG_W_ND(io, offset, val) dss_reg_w(io, offset, val, false)
#define DSS_REG_W(io, offset, val) dss_reg_w(io, offset, val, true)
#define DSS_REG_R_ND(io, offset) dss_reg_r(io, offset, false)
#define DSS_REG_R(io, offset) dss_reg_r(io, offset, true)
enum dss_vreg_type {
struct dss_vreg {
struct regulator *vreg; /* vreg handle */
char vreg_name[32];
int min_voltage;
int max_voltage;
int enable_load;
int disable_load;
int pre_on_sleep;
int post_on_sleep;
int pre_off_sleep;
int post_off_sleep;
struct dss_gpio {
unsigned gpio;
unsigned value;
char gpio_name[32];
enum dss_clk_type {
DSS_CLK_AHB, /* no set rate. rate controlled through rpm */
struct dss_clk {
struct clk *clk; /* clk handle */
char clk_name[32];
enum dss_clk_type type;
unsigned long rate;
struct dss_module_power {
unsigned num_vreg;
struct dss_vreg *vreg_config;
unsigned num_gpio;
struct dss_gpio *gpio_config;
unsigned num_clk;
struct dss_clk *clk_config;
int msm_dss_ioremap_byname(struct platform_device *pdev,
struct dss_io_data *io_data, const char *name);
void msm_dss_iounmap(struct dss_io_data *io_data);
int msm_dss_enable_gpio(struct dss_gpio *in_gpio, int num_gpio, int enable);
int msm_dss_gpio_enable(struct dss_gpio *in_gpio, int num_gpio, int enable);
int msm_dss_config_vreg(struct device *dev, struct dss_vreg *in_vreg,
int num_vreg, int config);
int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable);
int msm_dss_get_clk(struct device *dev, struct dss_clk *clk_arry, int num_clk);
void msm_dss_put_clk(struct dss_clk *clk_arry, int num_clk);
int msm_dss_clk_set_rate(struct dss_clk *clk_arry, int num_clk);
int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable);
int mdss_i2c_byte_read(struct i2c_client *client, uint8_t slave_addr,
uint8_t reg_offset, uint8_t *read_buf);
int mdss_i2c_byte_write(struct i2c_client *client, uint8_t slave_addr,
uint8_t reg_offset, uint8_t *value);
#endif /* __MDSS_IO_UTIL_H__ */