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    Subject[PATCH V3 3/7] mfd: PCF50633 gpio support
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    Date
    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>
    Cc: Samuel Ortiz <sameo@openedhand.com>
    ---
    drivers/mfd/Kconfig | 7 ++
    drivers/mfd/Makefile | 1
    drivers/mfd/pcf50633-gpio.c | 118 +++++++++++++++++++++++++++++++++++++
    include/linux/mfd/pcf50633/gpio.h | 52 ++++++++++++++++
    4 files changed, 178 insertions(+), 0 deletions(-)
    create mode 100644 drivers/mfd/pcf50633-gpio.c
    create mode 100644 include/linux/mfd/pcf50633/gpio.h

    diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
    index 3af4cd1..8d8c8df 100644
    --- a/drivers/mfd/Kconfig
    +++ b/drivers/mfd/Kconfig
    @@ -169,6 +169,13 @@ 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"
    diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
    index 7a12b09..5bc7c9f 100644
    --- a/drivers/mfd/Makefile
    +++ b/drivers/mfd/Makefile
    @@ -35,3 +35,4 @@ 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
    diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c
    new file mode 100644
    index 0000000..2fa2eca
    --- /dev/null
    +++ b/drivers/mfd/pcf50633-gpio.c
    @@ -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);
    diff --git a/include/linux/mfd/pcf50633/gpio.h b/include/linux/mfd/pcf50633/gpio.h
    new file mode 100644
    index 0000000..a42b845
    --- /dev/null
    +++ b/include/linux/mfd/pcf50633/gpio.h
    @@ -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 */
    +
    +


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