GNU Linux-libre 4.4.289-gnu1
[releases.git] / drivers / mfd / pcf50633-gpio.c
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");