/*
* IMX pinmux core definitions
*
* Copyright (C) 2012 Freescale Semiconductor, Inc.
* Copyright (C) 2012 Linaro Ltd.
*
* Author: Dong Aisheng <dong.aisheng@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __DRIVERS_PINCTRL_IMX_H
#define __DRIVERS_PINCTRL_IMX_H
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinmux.h>
struct platform_device;
extern struct pinmux_ops imx_pmx_ops;
/**
* struct imx_pin - describes a single i.MX pin
* @pin: the pin_id of this pin
* @mux_mode: the mux mode for this pin.
* @input_reg: the select input register offset for this pin if any
* 0 if no select input setting needed.
* @input_val: the select input value for this pin.
* @configs: the config for this pin.
*/
struct imx_pin {
unsigned int pin;
unsigned int mux_mode;
u16 input_reg;
unsigned int input_val;
unsigned long config;
};
/**
* struct imx_pin_reg - describe a pin reg map
* @mux_reg: mux register offset
* @conf_reg: config register offset
*/
struct imx_pin_reg {
s16 mux_reg;
s16 conf_reg;
};
/* decode a generic config into raw register value */
struct imx_cfg_params_decode {
enum pin_config_param param;
u32 mask;
u8 shift;
bool invert;
};
struct imx_pinctrl_soc_info {
const struct pinctrl_pin_desc *pins;
unsigned int npins;
unsigned int flags;
const char *gpr_compatible;
/* MUX_MODE shift and mask in case SHARE_MUX_CONF_REG */
unsigned int mux_mask;
u8 mux_shift;
/* generic pinconf */
bool generic_pinconf;
const struct pinconf_generic_params *custom_params;
unsigned int num_custom_params;
const struct imx_cfg_params_decode *decodes;
unsigned int num_decodes;
void (*fixup)(unsigned long *configs, unsigned int num_configs,
u32 *raw_config);
int (*gpio_set_direction)(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned offset,
bool input);
};
/**
* @dev: a pointer back to containing device
* @base: the offset to the controller in virtual memory
*/
struct imx_pinctrl {
struct device *dev;
struct pinctrl_dev *pctl;
void __iomem *base;
void __iomem *input_sel_base;
const struct imx_pinctrl_soc_info *info;
struct imx_pin_reg *pin_regs;
unsigned int group_index;
struct mutex mutex;
};
#define IMX_CFG_PARAMS_DECODE(p, m, o) \
{ .param = p, .mask = m, .shift = o, .invert = false, }
#define IMX_CFG_PARAMS_DECODE_INVERT(p, m, o) \
{ .param = p, .mask = m, .shift = o, .invert = true, }
#define SHARE_MUX_CONF_REG 0x1
#define ZERO_OFFSET_VALID 0x2
#define NO_MUX 0x0
#define NO_PAD 0x0
#define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
#define PAD_CTL_MASK(len) ((1 << len) - 1)
#define IMX_MUX_MASK 0x7
#define IOMUXC_CONFIG_SION (0x1 << 4)
int imx_pinctrl_probe(struct platform_device *pdev,
const struct imx_pinctrl_soc_info *info);
#endif /* __DRIVERS_PINCTRL_IMX_H */
