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
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
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Say yes here if you want to include support for ADC in the
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NXP PCF50633 chip.
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config PCF50633_GPIO
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tristate "Support for NXP PCF50633 GPIO"
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depends on MFD_PCF50633
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help
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Say yes here if you want to include support GPIO for pins on
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the PCF50633 chip.
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endmenu
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menu "Multimedia Capabilities Port drivers"
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@ -40,3 +40,4 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o
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obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
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obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
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obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
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118
drivers/mfd/pcf50633-gpio.c
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118
drivers/mfd/pcf50633-gpio.c
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@ -0,0 +1,118 @@
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/* NXP PCF50633 GPIO Driver
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* Author: Balaji Rao <balajirrao@openmoko.org>
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* All rights reserved.
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*
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* Broken down from monstrous PCF50633 driver mainly by
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* Harald Welte, Andy Green and Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/mfd/pcf50633/core.h>
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#include <linux/mfd/pcf50633/gpio.h>
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enum pcf50633_regulator_id {
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PCF50633_REGULATOR_AUTO,
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PCF50633_REGULATOR_DOWN1,
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PCF50633_REGULATOR_DOWN2,
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PCF50633_REGULATOR_LDO1,
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PCF50633_REGULATOR_LDO2,
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PCF50633_REGULATOR_LDO3,
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PCF50633_REGULATOR_LDO4,
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PCF50633_REGULATOR_LDO5,
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PCF50633_REGULATOR_LDO6,
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PCF50633_REGULATOR_HCLDO,
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PCF50633_REGULATOR_MEMLDO,
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};
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#define PCF50633_REG_AUTOOUT 0x1a
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#define PCF50633_REG_DOWN1OUT 0x1e
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#define PCF50633_REG_DOWN2OUT 0x22
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#define PCF50633_REG_MEMLDOOUT 0x26
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#define PCF50633_REG_LDO1OUT 0x2d
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#define PCF50633_REG_LDO2OUT 0x2f
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#define PCF50633_REG_LDO3OUT 0x31
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#define PCF50633_REG_LDO4OUT 0x33
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#define PCF50633_REG_LDO5OUT 0x35
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#define PCF50633_REG_LDO6OUT 0x37
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#define PCF50633_REG_HCLDOOUT 0x39
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static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
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[PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT,
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[PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT,
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[PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT,
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[PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT,
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[PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT,
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[PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT,
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[PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT,
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[PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT,
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[PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT,
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[PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT,
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[PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT,
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};
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int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)
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{
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u8 reg;
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reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
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return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);
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}
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EXPORT_SYMBOL_GPL(pcf50633_gpio_set);
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u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)
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{
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u8 reg, val;
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reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
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val = pcf50633_reg_read(pcf, reg) & 0x07;
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return val;
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}
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EXPORT_SYMBOL_GPL(pcf50633_gpio_get);
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int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)
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{
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u8 val, reg;
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reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
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val = !!invert << 3;
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return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);
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}
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EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);
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int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)
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{
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u8 reg, val;
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reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
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val = pcf50633_reg_read(pcf, reg);
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return val & (1 << 3);
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}
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EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);
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int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
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int gpio, int regulator, int on)
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{
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u8 reg, val, mask;
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/* the *ENA register is always one after the *OUT register */
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reg = pcf50633_regulator_registers[regulator] + 1;
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val = !!on << (gpio - PCF50633_GPIO1);
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mask = 1 << (gpio - PCF50633_GPIO1);
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return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);
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}
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EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);
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52
include/linux/mfd/pcf50633/gpio.h
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52
include/linux/mfd/pcf50633/gpio.h
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@ -0,0 +1,52 @@
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/*
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* gpio.h -- GPIO driver for NXP PCF50633
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef __LINUX_MFD_PCF50633_GPIO_H
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#define __LINUX_MFD_PCF50633_GPIO_H
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#include <linux/mfd/pcf50633/core.h>
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#define PCF50633_GPIO1 1
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#define PCF50633_GPIO2 2
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#define PCF50633_GPIO3 3
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#define PCF50633_GPO 4
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#define PCF50633_REG_GPIO1CFG 0x14
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#define PCF50633_REG_GPIO2CFG 0x15
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#define PCF50633_REG_GPIO3CFG 0x16
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#define PCF50633_REG_GPOCFG 0x17
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#define PCF50633_GPOCFG_GPOSEL_MASK 0x07
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enum pcf50633_reg_gpocfg {
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PCF50633_GPOCFG_GPOSEL_0 = 0x00,
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PCF50633_GPOCFG_GPOSEL_LED_NFET = 0x01,
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PCF50633_GPOCFG_GPOSEL_SYSxOK = 0x02,
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PCF50633_GPOCFG_GPOSEL_CLK32K = 0x03,
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PCF50633_GPOCFG_GPOSEL_ADAPUSB = 0x04,
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PCF50633_GPOCFG_GPOSEL_USBxOK = 0x05,
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PCF50633_GPOCFG_GPOSEL_ACTPH4 = 0x06,
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PCF50633_GPOCFG_GPOSEL_1 = 0x07,
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PCF50633_GPOCFG_GPOSEL_INVERSE = 0x08,
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};
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int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val);
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u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio);
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int pcf50633_gpio_invert_set(struct pcf50633 *, int gpio, int invert);
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int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio);
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int pcf50633_gpio_power_supply_set(struct pcf50633 *,
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int gpio, int regulator, int on);
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#endif /* __LINUX_MFD_PCF50633_GPIO_H */
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