Commit 6a3d119b authored by Balaji Rao's avatar Balaji Rao Committed by Samuel Ortiz

mfd: PCF50633 gpio support

What the PCF05633 calls as a 'GPIO' is much more than the GPIO in the linux
sense and there are only 4 of them - which means, the gpiolib is not used
here.
Signed-off-by: default avatarBalaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@openedhand.com>
parent 08c3e06a
...@@ -233,6 +233,13 @@ config PCF50633_ADC ...@@ -233,6 +233,13 @@ config PCF50633_ADC
Say yes here if you want to include support for ADC in the Say yes here if you want to include support for ADC in the
NXP PCF50633 chip. NXP PCF50633 chip.
config PCF50633_GPIO
tristate "Support for NXP PCF50633 GPIO"
depends on MFD_PCF50633
help
Say yes here if you want to include support GPIO for pins on
the PCF50633 chip.
endmenu endmenu
menu "Multimedia Capabilities Port drivers" menu "Multimedia Capabilities Port drivers"
......
...@@ -40,3 +40,4 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o ...@@ -40,3 +40,4 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o
obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
\ No newline at end of file
/* 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/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);
/*
* gpio.h -- GPIO driver for NXP PCF50633
*
* (C) 2006-2008 by Openmoko, Inc.
* All rights reserved.
*
* 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 __LINUX_MFD_PCF50633_GPIO_H
#define __LINUX_MFD_PCF50633_GPIO_H
#include <linux/mfd/pcf50633/core.h>
#define PCF50633_GPIO1 1
#define PCF50633_GPIO2 2
#define PCF50633_GPIO3 3
#define PCF50633_GPO 4
#define PCF50633_REG_GPIO1CFG 0x14
#define PCF50633_REG_GPIO2CFG 0x15
#define PCF50633_REG_GPIO3CFG 0x16
#define PCF50633_REG_GPOCFG 0x17
#define PCF50633_GPOCFG_GPOSEL_MASK 0x07
enum pcf50633_reg_gpocfg {
PCF50633_GPOCFG_GPOSEL_0 = 0x00,
PCF50633_GPOCFG_GPOSEL_LED_NFET = 0x01,
PCF50633_GPOCFG_GPOSEL_SYSxOK = 0x02,
PCF50633_GPOCFG_GPOSEL_CLK32K = 0x03,
PCF50633_GPOCFG_GPOSEL_ADAPUSB = 0x04,
PCF50633_GPOCFG_GPOSEL_USBxOK = 0x05,
PCF50633_GPOCFG_GPOSEL_ACTPH4 = 0x06,
PCF50633_GPOCFG_GPOSEL_1 = 0x07,
PCF50633_GPOCFG_GPOSEL_INVERSE = 0x08,
};
int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val);
u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio);
int pcf50633_gpio_invert_set(struct pcf50633 *, int gpio, int invert);
int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio);
int pcf50633_gpio_power_supply_set(struct pcf50633 *,
int gpio, int regulator, int on);
#endif /* __LINUX_MFD_PCF50633_GPIO_H */
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