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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); |