1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* NXP PCF50633 GPIO Driver 3 * 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 by 9 * Harald Welte, Andy Green and Werner Almesberger 10 */ 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 19 static 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 33 int 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 } 41 EXPORT_SYMBOL_GPL(pcf50633_gpio_set); 42 43 u8 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 } 52 EXPORT_SYMBOL_GPL(pcf50633_gpio_get); 53 54 int 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 } 63 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); 64 65 int 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 } 74 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); 75 76 int 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 } 89 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); 90 91 MODULE_LICENSE("GPL"); 92