9ab19a8f669dfa5a5b2fef8942aff5e90df3d073
[kernel.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
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");