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: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Balaji Rao 2009-01-09 01:49:37 +01:00 committed by Samuel Ortiz
parent 08c3e06a5e
commit 6a3d119b4c
4 changed files with 179 additions and 1 deletions

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@ -233,6 +233,13 @@ config PCF50633_ADC
Say yes here if you want to include support for ADC in the
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
menu "Multimedia Capabilities Port drivers"

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@ -39,4 +39,5 @@ obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
obj-$(CONFIG_PMIC_DA903X) += da903x.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

118
drivers/mfd/pcf50633-gpio.c Normal file
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@ -0,0 +1,118 @@
/* 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);

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@ -0,0 +1,52 @@
/*
* 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 */