projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 6a3d119b BR |
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); |