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 19 #include <linux/mfd/pcf50633/core.h> 20 #include <linux/mfd/pcf50633/gpio.h> 21 22 enum pcf50633_regulator_id { 23 PCF50633_REGULATOR_AUTO, 24 PCF50633_REGULATOR_DOWN1, 25 PCF50633_REGULATOR_DOWN2, 26 PCF50633_REGULATOR_LDO1, 27 PCF50633_REGULATOR_LDO2, 28 PCF50633_REGULATOR_LDO3, 29 PCF50633_REGULATOR_LDO4, 30 PCF50633_REGULATOR_LDO5, 31 PCF50633_REGULATOR_LDO6, 32 PCF50633_REGULATOR_HCLDO, 33 PCF50633_REGULATOR_MEMLDO, 34 }; 35 36 #define PCF50633_REG_AUTOOUT 0x1a 37 #define PCF50633_REG_DOWN1OUT 0x1e 38 #define PCF50633_REG_DOWN2OUT 0x22 39 #define PCF50633_REG_MEMLDOOUT 0x26 40 #define PCF50633_REG_LDO1OUT 0x2d 41 #define PCF50633_REG_LDO2OUT 0x2f 42 #define PCF50633_REG_LDO3OUT 0x31 43 #define PCF50633_REG_LDO4OUT 0x33 44 #define PCF50633_REG_LDO5OUT 0x35 45 #define PCF50633_REG_LDO6OUT 0x37 46 #define PCF50633_REG_HCLDOOUT 0x39 47 48 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { 49 [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, 50 [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, 51 [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, 52 [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, 53 [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, 54 [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, 55 [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, 56 [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, 57 [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, 58 [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, 59 [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, 60 }; 61 62 int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) 63 { 64 u8 reg; 65 66 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 67 68 return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val); 69 } 70 EXPORT_SYMBOL_GPL(pcf50633_gpio_set); 71 72 u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) 73 { 74 u8 reg, val; 75 76 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 77 val = pcf50633_reg_read(pcf, reg) & 0x07; 78 79 return val; 80 } 81 EXPORT_SYMBOL_GPL(pcf50633_gpio_get); 82 83 int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) 84 { 85 u8 val, reg; 86 87 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 88 val = !!invert << 3; 89 90 return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val); 91 } 92 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); 93 94 int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) 95 { 96 u8 reg, val; 97 98 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; 99 val = pcf50633_reg_read(pcf, reg); 100 101 return val & (1 << 3); 102 } 103 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); 104 105 int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, 106 int gpio, int regulator, int on) 107 { 108 u8 reg, val, mask; 109 110 /* the *ENA register is always one after the *OUT register */ 111 reg = pcf50633_regulator_registers[regulator] + 1; 112 113 val = !!on << (gpio - PCF50633_GPIO1); 114 mask = 1 << (gpio - PCF50633_GPIO1); 115 116 return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); 117 } 118 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); 119