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pcf50633-gpio.c
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1 /* NXP PCF50633 GPIO Driver
2  *
3  * (C) 2006-2008 by Openmoko, Inc.
4  * Author: Balaji Rao <[email protected]>
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 #include <linux/module.h>
19 
20 #include <linux/mfd/pcf50633/core.h>
21 #include <linux/mfd/pcf50633/gpio.h>
22 #include <linux/mfd/pcf50633/pmic.h>
23 
24 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
25  [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT,
26  [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT,
27  [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT,
28  [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT,
29  [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT,
30  [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT,
31  [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT,
32  [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT,
33  [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT,
34  [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT,
35  [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT,
36 };
37 
38 int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)
39 {
40  u8 reg;
41 
42  reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
43 
44  return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);
45 }
46 EXPORT_SYMBOL_GPL(pcf50633_gpio_set);
47 
48 u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)
49 {
50  u8 reg, val;
51 
52  reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
53  val = pcf50633_reg_read(pcf, reg) & 0x07;
54 
55  return val;
56 }
57 EXPORT_SYMBOL_GPL(pcf50633_gpio_get);
58 
59 int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)
60 {
61  u8 val, reg;
62 
63  reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
64  val = !!invert << 3;
65 
66  return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);
67 }
68 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);
69 
70 int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)
71 {
72  u8 reg, val;
73 
74  reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
75  val = pcf50633_reg_read(pcf, reg);
76 
77  return val & (1 << 3);
78 }
79 EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);
80 
81 int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
82  int gpio, int regulator, int on)
83 {
84  u8 reg, val, mask;
85 
86  /* the *ENA register is always one after the *OUT register */
87  reg = pcf50633_regulator_registers[regulator] + 1;
88 
89  val = !!on << (gpio - PCF50633_GPIO1);
90  mask = 1 << (gpio - PCF50633_GPIO1);
91 
92  return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);
93 }
94 EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);
95 
96 MODULE_LICENSE("GPL");
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