diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 3 | ||||
| -rw-r--r-- | drivers/mfd/pcf50633-gpio.c | 118 |
3 files changed, 127 insertions, 1 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 2fa3504e165..06a2b0f7737 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -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" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 138f9c4d3d7..3afb5192e4d 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -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
\ No newline at end of file +obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o +obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
\ No newline at end of file diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c new file mode 100644 index 00000000000..2fa2eca5c9c --- /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); |