1 /* NXP PCF50633 GPIO Driver 2 * 3 * (C) 2006-2008 by Openmoko, Inc. 4 * Author: Balaji Rao <balajirrao@openmoko.org> 5 * All rights reserved. 6 * 7 * Broken down from monstrous PCF50633 driver mainly by 8 * Harald Welte, Andy Green and Werner Almesberger 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/module.h> 19 20 #include <linux/mfd/pcf50633/core.h> 21 #include <linux/mfd/pcf50633/gpio.h> 22 #include <linux/mfd/pcf50633/pmic.h> 23 24 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { 25 [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, 26 [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, 27 [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, 28 [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, 29 [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, 30 [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, 31 [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, 32 [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, 33 [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, 34 [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, 35 [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, 36 }; 37 38 int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) 39 { 40 u8 reg; 41 42 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 43 44 return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val); 45 } 46 EXPORT_SYMBOL_GPL(pcf50633_gpio_set); 47 48 u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) 49 { 50 u8 reg, val; 51 52 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 53 val = pcf50633_reg_read(pcf, reg) & 0x07; 54 55 return val; 56 } 57 EXPORT_SYMBOL_GPL(pcf50633_gpio_get); 58 59 int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) 60 { 61 u8 val, reg; 62 63 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 64 val = !!invert << 3; 65 66 return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val); 67 } 68 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); 69 70 int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) 71 { 72 u8 reg, val; 73 74 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 75 val = pcf50633_reg_read(pcf, reg); 76 77 return val & (1 << 3); 78 } 79 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); 80 81 int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, 82 int gpio, int regulator, int on) 83 { 84 u8 reg, val, mask; 85 86 /* the *ENA register is always one after the *OUT register */ 87 reg = pcf50633_regulator_registers[regulator] + 1; 88 89 val = !!on << (gpio - PCF50633_GPIO1); 90 mask = 1 << (gpio - PCF50633_GPIO1); 91 92 return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); 93 } 94 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); 95 96 MODULE_LICENSE("GPL"); 97