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 
pcf50633_gpio_set(struct pcf50633 * pcf,int gpio,u8 val)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 
pcf50633_gpio_get(struct pcf50633 * pcf,int gpio)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 
pcf50633_gpio_invert_set(struct pcf50633 * pcf,int gpio,int invert)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 
pcf50633_gpio_invert_get(struct pcf50633 * pcf,int gpio)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 
pcf50633_gpio_power_supply_set(struct pcf50633 * pcf,int gpio,int regulator,int on)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");
92