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/*
* Copyright 2012 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __PINCTRL_MXS_H
#define __PINCTRL_MXS_H
#include <linux/platform_device.h>
#include <linux/pinctrl/pinctrl.h>
#define SET 0x4
#define CLR 0x8
#define TOG 0xc
#define MXS_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
#define PINID(bank, pin) ((bank) * 32 + (pin))
/*
* pinmux-id bit field definitions
*
* bank: 15..12 (4)
* pin: 11..4 (8)
* muxsel: 3..0 (4)
*/
#define MUXID_TO_PINID(m) PINID((m) >> 12 & 0xf, (m) >> 4 & 0xff)
#define MUXID_TO_MUXSEL(m) ((m) & 0xf)
#define PINID_TO_BANK(p) ((p) >> 5)
#define PINID_TO_PIN(p) ((p) % 32)
/*
* pin config bit field definitions
*
* pull-up: 6..5 (2)
* voltage: 4..3 (2)
* mA: 2..0 (3)
*
* MSB of each field is presence bit for the config.
*/
#define PULL_PRESENT (1 << 6)
#define PULL_SHIFT 5
#define VOL_PRESENT (1 << 4)
#define VOL_SHIFT 3
#define MA_PRESENT (1 << 2)
#define MA_SHIFT 0
#define CONFIG_TO_PULL(c) ((c) >> PULL_SHIFT & 0x1)
#define CONFIG_TO_VOL(c) ((c) >> VOL_SHIFT & 0x1)
#define CONFIG_TO_MA(c) ((c) >> MA_SHIFT & 0x3)
struct mxs_function {
const char *name;
const char **groups;
unsigned ngroups;
};
struct mxs_group {
const char *name;
unsigned int *pins;
unsigned npins;
u8 *muxsel;
u8 config;
};
struct mxs_regs {
u16 muxsel;
u16 drive;
u16 pull;
};
struct mxs_pinctrl_soc_data {
const struct mxs_regs *regs;
const struct pinctrl_pin_desc *pins;
unsigned npins;
struct mxs_function *functions;
unsigned nfunctions;
struct mxs_group *groups;
unsigned ngroups;
};
int mxs_pinctrl_probe(struct platform_device *pdev,
struct mxs_pinctrl_soc_data *soc);
#endif /* __PINCTRL_MXS_H */
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