mirror of https://gitee.com/openkylin/linux.git
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/*
|
|
* Pinctrl driver for the Wondermedia SoC's
|
|
*
|
|
* Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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.
|
|
*/
|
|
|
|
#include <linux/gpio.h>
|
|
|
|
/* VT8500 has no enable register in the extgpio bank. */
|
|
#define NO_REG 0xFFFF
|
|
|
|
#define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg) \
|
|
{ \
|
|
.reg_en = __en, \
|
|
.reg_dir = __dir, \
|
|
.reg_data_out = __dout, \
|
|
.reg_data_in = __din, \
|
|
.reg_pull_en = __pen, \
|
|
.reg_pull_cfg = __pcfg, \
|
|
}
|
|
|
|
/* Encode/decode the bank/bit pairs into a pin value */
|
|
#define WMT_PIN(__bank, __offset) ((__bank << 5) | __offset)
|
|
#define WMT_BANK_FROM_PIN(__pin) (__pin >> 5)
|
|
#define WMT_BIT_FROM_PIN(__pin) (__pin & 0x1f)
|
|
|
|
#define WMT_GROUP(__name, __data) \
|
|
{ \
|
|
.name = __name, \
|
|
.pins = __data, \
|
|
.npins = ARRAY_SIZE(__data), \
|
|
}
|
|
|
|
struct wmt_pinctrl_bank_registers {
|
|
u32 reg_en;
|
|
u32 reg_dir;
|
|
u32 reg_data_out;
|
|
u32 reg_data_in;
|
|
|
|
u32 reg_pull_en;
|
|
u32 reg_pull_cfg;
|
|
};
|
|
|
|
struct wmt_pinctrl_group {
|
|
const char *name;
|
|
const unsigned int *pins;
|
|
const unsigned npins;
|
|
};
|
|
|
|
struct wmt_pinctrl_data {
|
|
struct device *dev;
|
|
struct pinctrl_dev *pctl_dev;
|
|
|
|
/* must be initialized before calling wmt_pinctrl_probe */
|
|
void __iomem *base;
|
|
const struct wmt_pinctrl_bank_registers *banks;
|
|
const struct pinctrl_pin_desc *pins;
|
|
const char * const *groups;
|
|
|
|
u32 nbanks;
|
|
u32 npins;
|
|
u32 ngroups;
|
|
|
|
struct gpio_chip gpio_chip;
|
|
struct pinctrl_gpio_range gpio_range;
|
|
};
|
|
|
|
int wmt_pinctrl_probe(struct platform_device *pdev,
|
|
struct wmt_pinctrl_data *data);
|