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1// SPDX-License-Identifier: GPL-2.0-or-later2/* NXP PCF50633 GPIO Driver3 *4 * (C) 2006-2008 by Openmoko, Inc.5 * Author: Balaji Rao <balajirrao@openmoko.org>6 * All rights reserved.7 *8 * Broken down from monstrous PCF50633 driver mainly by9 * Harald Welte, Andy Green and Werner Almesberger10 */11 12#include <linux/kernel.h>13#include <linux/module.h>14 15#include <linux/mfd/pcf50633/core.h>16#include <linux/mfd/pcf50633/gpio.h>17#include <linux/mfd/pcf50633/pmic.h>18 19static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {20 [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT,21 [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT,22 [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT,23 [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT,24 [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT,25 [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT,26 [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT,27 [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT,28 [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT,29 [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT,30 [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT,31};32 33int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)34{35 u8 reg;36 37 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;38 39 return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);40}41EXPORT_SYMBOL_GPL(pcf50633_gpio_set);42 43u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)44{45 u8 reg, val;46 47 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;48 val = pcf50633_reg_read(pcf, reg) & 0x07;49 50 return val;51}52EXPORT_SYMBOL_GPL(pcf50633_gpio_get);53 54int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)55{56 u8 val, reg;57 58 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;59 val = !!invert << 3;60 61 return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);62}63EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);64 65int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)66{67 u8 reg, val;68 69 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;70 val = pcf50633_reg_read(pcf, reg);71 72 return val & (1 << 3);73}74EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);75 76int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,77 int gpio, int regulator, int on)78{79 u8 reg, val, mask;80 81 /* the *ENA register is always one after the *OUT register */82 reg = pcf50633_regulator_registers[regulator] + 1;83 84 val = !!on << (gpio - PCF50633_GPIO1);85 mask = 1 << (gpio - PCF50633_GPIO1);86 87 return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);88}89EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);90 91MODULE_DESCRIPTION("NXP PCF50633 GPIO Driver");92MODULE_LICENSE("GPL");93