2 * tps65912-core.c -- TI TPS65912x
4 * Copyright 2011 Texas Instruments Inc.
6 * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
13 * This driver is based on wm8350 implementation.
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/slab.h>
19 #include <linux/gpio.h>
20 #include <linux/mfd/core.h>
21 #include <linux/mfd/tps65912.h>
23 static const struct mfd_cell tps65912s[] = {
25 .name = "tps65912-pmic",
29 int tps65912_set_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
34 mutex_lock(&tps65912->io_mutex);
36 err = tps65912->read(tps65912, reg, 1, &data);
38 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
43 err = tps65912->write(tps65912, reg, 1, &data);
45 dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
48 mutex_unlock(&tps65912->io_mutex);
51 EXPORT_SYMBOL_GPL(tps65912_set_bits);
53 int tps65912_clear_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
58 mutex_lock(&tps65912->io_mutex);
59 err = tps65912->read(tps65912, reg, 1, &data);
61 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
66 err = tps65912->write(tps65912, reg, 1, &data);
68 dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
71 mutex_unlock(&tps65912->io_mutex);
74 EXPORT_SYMBOL_GPL(tps65912_clear_bits);
76 static inline int tps65912_read(struct tps65912 *tps65912, u8 reg)
81 err = tps65912->read(tps65912, reg, 1, &val);
88 static inline int tps65912_write(struct tps65912 *tps65912, u8 reg, u8 val)
90 return tps65912->write(tps65912, reg, 1, &val);
93 int tps65912_reg_read(struct tps65912 *tps65912, u8 reg)
97 mutex_lock(&tps65912->io_mutex);
99 data = tps65912_read(tps65912, reg);
101 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
103 mutex_unlock(&tps65912->io_mutex);
106 EXPORT_SYMBOL_GPL(tps65912_reg_read);
108 int tps65912_reg_write(struct tps65912 *tps65912, u8 reg, u8 val)
112 mutex_lock(&tps65912->io_mutex);
114 err = tps65912_write(tps65912, reg, val);
116 dev_err(tps65912->dev, "Write for reg 0x%x failed\n", reg);
118 mutex_unlock(&tps65912->io_mutex);
121 EXPORT_SYMBOL_GPL(tps65912_reg_write);
123 int tps65912_device_init(struct tps65912 *tps65912)
125 struct tps65912_board *pmic_plat_data = dev_get_platdata(tps65912->dev);
126 struct tps65912_platform_data *init_data;
127 int ret, dcdc_avs, value;
129 init_data = kzalloc(sizeof(struct tps65912_platform_data), GFP_KERNEL);
130 if (init_data == NULL)
133 mutex_init(&tps65912->io_mutex);
134 dev_set_drvdata(tps65912->dev, tps65912);
136 dcdc_avs = (pmic_plat_data->is_dcdc1_avs << 0 |
137 pmic_plat_data->is_dcdc2_avs << 1 |
138 pmic_plat_data->is_dcdc3_avs << 2 |
139 pmic_plat_data->is_dcdc4_avs << 3);
141 tps65912->read(tps65912, TPS65912_I2C_SPI_CFG, 1, &value);
143 tps65912->write(tps65912, TPS65912_I2C_SPI_CFG, 1, &dcdc_avs);
146 ret = mfd_add_devices(tps65912->dev, -1,
147 tps65912s, ARRAY_SIZE(tps65912s),
152 init_data->irq = pmic_plat_data->irq;
153 init_data->irq_base = pmic_plat_data->irq_base;
154 ret = tps65912_irq_init(tps65912, init_data->irq, init_data);
163 mfd_remove_devices(tps65912->dev);
167 void tps65912_device_exit(struct tps65912 *tps65912)
169 mfd_remove_devices(tps65912->dev);
170 tps65912_irq_exit(tps65912);
173 MODULE_AUTHOR("Margarita Olaya <magi@slimlogic.co.uk>");
174 MODULE_DESCRIPTION("TPS65912x chip family multi-function driver");
175 MODULE_LICENSE("GPL");