/* NXP PCF50633 GPIO Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50633 driver mainly by
* Harald Welte, Andy Green and Werner Almesberger
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/gpio.h>
enum pcf50633_regulator_id {
PCF50633_REGULATOR_AUTO,
PCF50633_REGULATOR_DOWN1,
PCF50633_REGULATOR_DOWN2,
PCF50633_REGULATOR_LDO1,
PCF50633_REGULATOR_LDO2,
PCF50633_REGULATOR_LDO3,
PCF50633_REGULATOR_LDO4,
PCF50633_REGULATOR_LDO5,
PCF50633_REGULATOR_LDO6,
PCF50633_REGULATOR_HCLDO,
PCF50633_REGULATOR_MEMLDO,
};
#define PCF50633_REG_AUTOOUT 0x1a
#define PCF50633_REG_DOWN1OUT 0x1e
#define PCF50633_REG_DOWN2OUT 0x22
#define PCF50633_REG_MEMLDOOUT 0x26
#define PCF50633_REG_LDO1OUT 0x2d
#define PCF50633_REG_LDO2OUT 0x2f
#define PCF50633_REG_LDO3OUT 0x31
#define PCF50633_REG_LDO4OUT 0x33
#define PCF50633_REG_LDO5OUT 0x35
#define PCF50633_REG_LDO6OUT 0x37
#define PCF50633_REG_HCLDOOUT 0x39
static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
[PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT,
[PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT,
[PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT,
[PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT,
[PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT,
[PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT,
[PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT,
[PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT,
[PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT,
[PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT,
[PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT,
};
int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)
{
u8 reg;
reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);
}
EXPORT_SYMBOL_GPL(pcf50633_gpio_set);
u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)
{
u8 reg, val;
reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
val = pcf50633_reg_read(pcf, reg) & 0x07;
return val;
}
EXPORT_SYMBOL_GPL(pcf50633_gpio_get);
int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)
{
u8 val, reg;
reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
val = !!invert << 3;
return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);
}
EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);
int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)
{
u8 reg, val;
reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
val = pcf50633_reg_read(pcf, reg);
return val & (1 << 3);
}
EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);
int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
int gpio, int regulator, int on)
{
u8 reg, val, mask;
/* the *ENA register is always one after the *OUT register */
reg = pcf50633_regulator_registers[regulator] + 1;
val = !!on << (gpio - PCF50633_GPIO1);
mask = 1 << (gpio - PCF50633_GPIO1);
return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);
}
EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);
MODULE_LICENSE("GPL");
