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

drivers/mfd/Kconfig

+7 −0
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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"

drivers/mfd/Makefile

+2 −1
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@@ -40,3 +40,4 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o 


obj-$(CONFIG_MFD_PCF50633)	+= pcf50633-core.o

obj-$(CONFIG_PCF50633_ADC)	+= pcf50633-adc.o

obj-$(CONFIG_PCF50633_GPIO)	+= pcf50633-gpio.o
 
 No newline at end of file

drivers/mfd/pcf50633-gpio.c

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/* 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);

include/linux/mfd/pcf50633/gpio.h

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/*

 * 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 */