diff options
Diffstat (limited to 'drivers/mfd/pcf50633-gpio.c')
-rw-r--r-- | drivers/mfd/pcf50633-gpio.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c new file mode 100644 index 000000000000..2fa2eca5c9cc --- /dev/null +++ b/drivers/mfd/pcf50633-gpio.c | |||
@@ -0,0 +1,118 @@ | |||
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); | ||