122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* 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/module.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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MODULE_LICENSE("GPL");
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