GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / mfd / pcf50633-gpio.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* NXP PCF50633 GPIO Driver
3  *
4  * (C) 2006-2008 by Openmoko, Inc.
5  * Author: Balaji Rao <balajirrao@openmoko.org>
6  * All rights reserved.
7  *
8  * Broken down from monstrous PCF50633 driver mainly by
9  * Harald Welte, Andy Green and Werner Almesberger
10  */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14
15 #include <linux/mfd/pcf50633/core.h>
16 #include <linux/mfd/pcf50633/gpio.h>
17 #include <linux/mfd/pcf50633/pmic.h>
18
19 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
20         [PCF50633_REGULATOR_AUTO]       = PCF50633_REG_AUTOOUT,
21         [PCF50633_REGULATOR_DOWN1]      = PCF50633_REG_DOWN1OUT,
22         [PCF50633_REGULATOR_DOWN2]      = PCF50633_REG_DOWN2OUT,
23         [PCF50633_REGULATOR_MEMLDO]     = PCF50633_REG_MEMLDOOUT,
24         [PCF50633_REGULATOR_LDO1]       = PCF50633_REG_LDO1OUT,
25         [PCF50633_REGULATOR_LDO2]       = PCF50633_REG_LDO2OUT,
26         [PCF50633_REGULATOR_LDO3]       = PCF50633_REG_LDO3OUT,
27         [PCF50633_REGULATOR_LDO4]       = PCF50633_REG_LDO4OUT,
28         [PCF50633_REGULATOR_LDO5]       = PCF50633_REG_LDO5OUT,
29         [PCF50633_REGULATOR_LDO6]       = PCF50633_REG_LDO6OUT,
30         [PCF50633_REGULATOR_HCLDO]      = PCF50633_REG_HCLDOOUT,
31 };
32
33 int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)
34 {
35         u8 reg;
36
37         reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
38
39         return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);
40 }
41 EXPORT_SYMBOL_GPL(pcf50633_gpio_set);
42
43 u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)
44 {
45         u8 reg, val;
46
47         reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
48         val = pcf50633_reg_read(pcf, reg) & 0x07;
49
50         return val;
51 }
52 EXPORT_SYMBOL_GPL(pcf50633_gpio_get);
53
54 int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)
55 {
56         u8 val, reg;
57
58         reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
59         val = !!invert << 3;
60
61         return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);
62 }
63 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);
64
65 int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)
66 {
67         u8 reg, val;
68
69         reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
70         val = pcf50633_reg_read(pcf, reg);
71
72         return val & (1 << 3);
73 }
74 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);
75
76 int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
77                                         int gpio, int regulator, int on)
78 {
79         u8 reg, val, mask;
80
81         /* the *ENA register is always one after the *OUT register */
82         reg = pcf50633_regulator_registers[regulator] + 1;
83
84         val = !!on << (gpio - PCF50633_GPIO1);
85         mask = 1 << (gpio - PCF50633_GPIO1);
86
87         return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);
88 }
89 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);
90
91 MODULE_LICENSE("GPL");