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 23 enum pcf50633_regulator_id { 24 PCF50633_REGULATOR_AUTO, 25 PCF50633_REGULATOR_DOWN1, 26 PCF50633_REGULATOR_DOWN2, 27 PCF50633_REGULATOR_LDO1, 28 PCF50633_REGULATOR_LDO2, 29 PCF50633_REGULATOR_LDO3, 30 PCF50633_REGULATOR_LDO4, 31 PCF50633_REGULATOR_LDO5, 32 PCF50633_REGULATOR_LDO6, 33 PCF50633_REGULATOR_HCLDO, 34 PCF50633_REGULATOR_MEMLDO, 35 }; 36 37 #define PCF50633_REG_AUTOOUT 0x1a 38 #define PCF50633_REG_DOWN1OUT 0x1e 39 #define PCF50633_REG_DOWN2OUT 0x22 40 #define PCF50633_REG_MEMLDOOUT 0x26 41 #define PCF50633_REG_LDO1OUT 0x2d 42 #define PCF50633_REG_LDO2OUT 0x2f 43 #define PCF50633_REG_LDO3OUT 0x31 44 #define PCF50633_REG_LDO4OUT 0x33 45 #define PCF50633_REG_LDO5OUT 0x35 46 #define PCF50633_REG_LDO6OUT 0x37 47 #define PCF50633_REG_HCLDOOUT 0x39 48 49 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { 50 [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, 51 [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, 52 [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, 53 [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, 54 [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, 55 [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, 56 [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, 57 [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, 58 [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, 59 [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, 60 [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, 61 }; 62 63 int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) 64 { 65 u8 reg; 66 67 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 68 69 return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val); 70 } 71 EXPORT_SYMBOL_GPL(pcf50633_gpio_set); 72 73 u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) 74 { 75 u8 reg, val; 76 77 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 78 val = pcf50633_reg_read(pcf, reg) & 0x07; 79 80 return val; 81 } 82 EXPORT_SYMBOL_GPL(pcf50633_gpio_get); 83 84 int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) 85 { 86 u8 val, reg; 87 88 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 89 val = !!invert << 3; 90 91 return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val); 92 } 93 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); 94 95 int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) 96 { 97 u8 reg, val; 98 99 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 100 val = pcf50633_reg_read(pcf, reg); 101 102 return val & (1 << 3); 103 } 104 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); 105 106 int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, 107 int gpio, int regulator, int on) 108 { 109 u8 reg, val, mask; 110 111 /* the *ENA register is always one after the *OUT register */ 112 reg = pcf50633_regulator_registers[regulator] + 1; 113 114 val = !!on << (gpio - PCF50633_GPIO1); 115 mask = 1 << (gpio - PCF50633_GPIO1); 116 117 return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); 118 } 119 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); 120 121 MODULE_LICENSE("GPL"); 122