mfd: convert PASIC3 to use MFD core
[linux-2.6.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
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);