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1/*
2 * tps65912-core.c -- TI TPS65912x
3 *
4 * Copyright 2011 Texas Instruments Inc.
5 *
6 * Author: Margarita Olaya Cabrera <magi@slimlogic.co.uk>
7 *
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.
12 *
13 * This driver is based on wm8350 implementation.
14 */
15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/slab.h>
20#include <linux/gpio.h>
21#include <linux/mfd/core.h>
22#include <linux/mfd/tps65912.h>
23
24static struct mfd_cell tps65912s[] = {
25 {
26 .name = "tps65912-pmic",
27 },
28};
29
30int tps65912_set_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
31{
32 u8 data;
33 int err;
34
35 mutex_lock(&tps65912->io_mutex);
36
37 err = tps65912->read(tps65912, reg, 1, &data);
38 if (err) {
39 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
40 goto out;
41 }
42
43 data |= mask;
44 err = tps65912->write(tps65912, reg, 1, &data);
45 if (err)
46 dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
47
48out:
49 mutex_unlock(&tps65912->io_mutex);
50 return err;
51}
52EXPORT_SYMBOL_GPL(tps65912_set_bits);
53
54int tps65912_clear_bits(struct tps65912 *tps65912, u8 reg, u8 mask)
55{
56 u8 data;
57 int err;
58
59 mutex_lock(&tps65912->io_mutex);
60 err = tps65912->read(tps65912, reg, 1, &data);
61 if (err) {
62 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
63 goto out;
64 }
65
66 data &= ~mask;
67 err = tps65912->write(tps65912, reg, 1, &data);
68 if (err)
69 dev_err(tps65912->dev, "Write to reg 0x%x failed\n", reg);
70
71out:
72 mutex_unlock(&tps65912->io_mutex);
73 return err;
74}
75EXPORT_SYMBOL_GPL(tps65912_clear_bits);
76
77static inline int tps65912_read(struct tps65912 *tps65912, u8 reg)
78{
79 u8 val;
80 int err;
81
82 err = tps65912->read(tps65912, reg, 1, &val);
83 if (err < 0)
84 return err;
85
86 return val;
87}
88
89static inline int tps65912_write(struct tps65912 *tps65912, u8 reg, u8 val)
90{
91 return tps65912->write(tps65912, reg, 1, &val);
92}
93
94int tps65912_reg_read(struct tps65912 *tps65912, u8 reg)
95{
96 int data;
97
98 mutex_lock(&tps65912->io_mutex);
99
100 data = tps65912_read(tps65912, reg);
101 if (data < 0)
102 dev_err(tps65912->dev, "Read from reg 0x%x failed\n", reg);
103
104 mutex_unlock(&tps65912->io_mutex);
105 return data;
106}
107EXPORT_SYMBOL_GPL(tps65912_reg_read);
108
109int tps65912_reg_write(struct tps65912 *tps65912, u8 reg, u8 val)
110{
111 int err;
112
113 mutex_lock(&tps65912->io_mutex);
114
115 err = tps65912_write(tps65912, reg, val);
116 if (err < 0)
117 dev_err(tps65912->dev, "Write for reg 0x%x failed\n", reg);
118
119 mutex_unlock(&tps65912->io_mutex);
120 return err;
121}
122EXPORT_SYMBOL_GPL(tps65912_reg_write);
123
124int tps65912_device_init(struct tps65912 *tps65912)
125{
126 struct tps65912_board *pmic_plat_data = tps65912->dev->platform_data;
127 struct tps65912_platform_data *init_data;
128 int ret, dcdc_avs, value;
129
130 init_data = kzalloc(sizeof(struct tps65912_platform_data), GFP_KERNEL);
131 if (init_data == NULL)
132 return -ENOMEM;
133
134 init_data->irq = pmic_plat_data->irq;
135 init_data->irq_base = pmic_plat_data->irq;
136
137 mutex_init(&tps65912->io_mutex);
138 dev_set_drvdata(tps65912->dev, tps65912);
139
140 dcdc_avs = (pmic_plat_data->is_dcdc1_avs << 0 |
141 pmic_plat_data->is_dcdc2_avs << 1 |
142 pmic_plat_data->is_dcdc3_avs << 2 |
143 pmic_plat_data->is_dcdc4_avs << 3);
144 if (dcdc_avs) {
145 tps65912->read(tps65912, TPS65912_I2C_SPI_CFG, 1, &value);
146 dcdc_avs |= value;
147 tps65912->write(tps65912, TPS65912_I2C_SPI_CFG, 1, &dcdc_avs);
148 }
149
150 ret = mfd_add_devices(tps65912->dev, -1,
151 tps65912s, ARRAY_SIZE(tps65912s),
152 NULL, 0);
153 if (ret < 0)
154 goto err;
155
156 ret = tps65912_irq_init(tps65912, init_data->irq, init_data);
157 if (ret < 0)
158 goto err;
159
160 return ret;
161
162err:
163 kfree(init_data);
164 mfd_remove_devices(tps65912->dev);
165 kfree(tps65912);
166 return ret;
167}
168
169void tps65912_device_exit(struct tps65912 *tps65912)
170{
171 mfd_remove_devices(tps65912->dev);
172 kfree(tps65912);
173}
174
175MODULE_AUTHOR("Margarita Olaya <magi@slimlogic.co.uk>");
176MODULE_DESCRIPTION("TPS65912x chip family multi-function driver");
177MODULE_LICENSE("GPL");
1/*
2 * Core functions for TI TPS65912x PMICs
3 *
4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
5 * Andrew F. Davis <afd@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
12 * kind, whether expressed or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License version 2 for more details.
15 *
16 * Based on the TPS65218 driver and the previous TPS65912 driver by
17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
18 */
19
20#include <linux/interrupt.h>
21#include <linux/mfd/core.h>
22#include <linux/module.h>
23
24#include <linux/mfd/tps65912.h>
25
26static const struct mfd_cell tps65912_cells[] = {
27 { .name = "tps65912-regulator", },
28 { .name = "tps65912-gpio", },
29};
30
31static const struct regmap_irq tps65912_irqs[] = {
32 /* INT_STS IRQs */
33 REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_F, 0, TPS65912_INT_STS_PWRHOLD_F),
34 REGMAP_IRQ_REG(TPS65912_IRQ_VMON, 0, TPS65912_INT_STS_VMON),
35 REGMAP_IRQ_REG(TPS65912_IRQ_PWRON, 0, TPS65912_INT_STS_PWRON),
36 REGMAP_IRQ_REG(TPS65912_IRQ_PWRON_LP, 0, TPS65912_INT_STS_PWRON_LP),
37 REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_R, 0, TPS65912_INT_STS_PWRHOLD_R),
38 REGMAP_IRQ_REG(TPS65912_IRQ_HOTDIE, 0, TPS65912_INT_STS_HOTDIE),
39 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_R, 0, TPS65912_INT_STS_GPIO1_R),
40 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_F, 0, TPS65912_INT_STS_GPIO1_F),
41 /* INT_STS2 IRQs */
42 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_R, 1, TPS65912_INT_STS2_GPIO2_R),
43 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_F, 1, TPS65912_INT_STS2_GPIO2_F),
44 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_R, 1, TPS65912_INT_STS2_GPIO3_R),
45 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_F, 1, TPS65912_INT_STS2_GPIO3_F),
46 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_R, 1, TPS65912_INT_STS2_GPIO4_R),
47 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_F, 1, TPS65912_INT_STS2_GPIO4_F),
48 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_R, 1, TPS65912_INT_STS2_GPIO5_R),
49 REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_F, 1, TPS65912_INT_STS2_GPIO5_F),
50 /* INT_STS3 IRQs */
51 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC1, 2, TPS65912_INT_STS3_PGOOD_DCDC1),
52 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC2, 2, TPS65912_INT_STS3_PGOOD_DCDC2),
53 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC3, 2, TPS65912_INT_STS3_PGOOD_DCDC3),
54 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC4, 2, TPS65912_INT_STS3_PGOOD_DCDC4),
55 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO1, 2, TPS65912_INT_STS3_PGOOD_LDO1),
56 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO2, 2, TPS65912_INT_STS3_PGOOD_LDO2),
57 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO3, 2, TPS65912_INT_STS3_PGOOD_LDO3),
58 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO4, 2, TPS65912_INT_STS3_PGOOD_LDO4),
59 /* INT_STS4 IRQs */
60 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO5, 3, TPS65912_INT_STS4_PGOOD_LDO5),
61 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO6, 3, TPS65912_INT_STS4_PGOOD_LDO6),
62 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO7, 3, TPS65912_INT_STS4_PGOOD_LDO7),
63 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO8, 3, TPS65912_INT_STS4_PGOOD_LDO8),
64 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO9, 3, TPS65912_INT_STS4_PGOOD_LDO9),
65 REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO10, 3, TPS65912_INT_STS4_PGOOD_LDO10),
66};
67
68static struct regmap_irq_chip tps65912_irq_chip = {
69 .name = "tps65912",
70 .irqs = tps65912_irqs,
71 .num_irqs = ARRAY_SIZE(tps65912_irqs),
72 .num_regs = 4,
73 .irq_reg_stride = 2,
74 .mask_base = TPS65912_INT_MSK,
75 .status_base = TPS65912_INT_STS,
76 .ack_base = TPS65912_INT_STS,
77 .init_ack_masked = true,
78};
79
80static const struct regmap_range tps65912_yes_ranges[] = {
81 regmap_reg_range(TPS65912_INT_STS, TPS65912_GPIO5),
82};
83
84static const struct regmap_access_table tps65912_volatile_table = {
85 .yes_ranges = tps65912_yes_ranges,
86 .n_yes_ranges = ARRAY_SIZE(tps65912_yes_ranges),
87};
88
89const struct regmap_config tps65912_regmap_config = {
90 .reg_bits = 8,
91 .val_bits = 8,
92 .cache_type = REGCACHE_RBTREE,
93 .volatile_table = &tps65912_volatile_table,
94};
95EXPORT_SYMBOL_GPL(tps65912_regmap_config);
96
97int tps65912_device_init(struct tps65912 *tps)
98{
99 int ret;
100
101 ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
102 &tps65912_irq_chip, &tps->irq_data);
103 if (ret)
104 return ret;
105
106 ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65912_cells,
107 ARRAY_SIZE(tps65912_cells), NULL, 0,
108 regmap_irq_get_domain(tps->irq_data));
109 if (ret) {
110 regmap_del_irq_chip(tps->irq, tps->irq_data);
111 return ret;
112 }
113
114 return 0;
115}
116EXPORT_SYMBOL_GPL(tps65912_device_init);
117
118int tps65912_device_exit(struct tps65912 *tps)
119{
120 regmap_del_irq_chip(tps->irq, tps->irq_data);
121
122 return 0;
123}
124EXPORT_SYMBOL_GPL(tps65912_device_exit);
125
126MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
127MODULE_DESCRIPTION("TPS65912x MFD Driver");
128MODULE_LICENSE("GPL v2");