linux-imx

/*

 * Copyright (c) 2016, BayLibre, SAS. All rights reserved.

 * Author: Neil Armstrong <narmstrong@baylibre.com>

 *

 * Copyright (c) 2010, Code Aurora Forum. All rights reserved.

 *

 * Driver for Semtech SX150X I2C GPIO Expanders

 * The handling of the 4-bit chips (SX1501/SX1504/SX1507) is untested.

 *

 * Author: Gregory Bean <gbean@codeaurora.org>

 *

 * 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.

 */

​

#include <linux/regmap.h>

#include <linux/i2c.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/gpio/driver.h>

#include <linux/pinctrl/pinconf.h>

#include <linux/pinctrl/pinctrl.h>

#include <linux/pinctrl/pinmux.h>

#include <linux/pinctrl/pinconf-generic.h>

​

#include "core.h"

#include "pinconf.h"

#include "pinctrl-utils.h"

​

/* The chip models of sx150x */

enum {

    SX150X_123 = 0,

    SX150X_456,

    SX150X_789,

};

enum {

    SX150X_789_REG_MISC_AUTOCLEAR_OFF = 1 << 0,

    SX150X_MAX_REGISTER = 0xad,

    SX150X_IRQ_TYPE_EDGE_RISING = 0x1,

    SX150X_IRQ_TYPE_EDGE_FALLING = 0x2,

    SX150X_789_RESET_KEY1 = 0x12,

    SX150X_789_RESET_KEY2 = 0x34,

};

​

struct sx150x_123_pri {

    u8 reg_pld_mode;

    u8 reg_pld_table0;

    u8 reg_pld_table1;

    u8 reg_pld_table2;

    u8 reg_pld_table3;

    u8 reg_pld_table4;

    u8 reg_advanced;