| Balaji Rao | 6a3d119 | 2009-01-09 01:49:37 +0100 | [diff] [blame] | 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> |
| Adrian Bunk | 1346a1c | 2009-05-12 13:45:14 -0700 | [diff] [blame] | 18 | #include <linux/module.h> |
| Balaji Rao | 6a3d119 | 2009-01-09 01:49:37 +0100 | [diff] [blame] | 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); |
| Adrian Bunk | 1346a1c | 2009-05-12 13:45:14 -0700 | [diff] [blame] | 120 | |
| 121 | MODULE_LICENSE("GPL"); |