2 * Core driver for TI TPS65090 PMIC family
4 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #include <linux/interrupt.h>
20 #include <linux/irq.h>
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/mutex.h>
24 #include <linux/slab.h>
25 #include <linux/i2c.h>
26 #include <linux/mfd/core.h>
27 #include <linux/mfd/tps65090.h>
28 #include <linux/err.h>
31 #define TOTAL_NUM_REG 0x18
33 /* interrupt status registers */
34 #define TPS65090_INT_STS 0x0
35 #define TPS65090_INT_STS2 0x1
37 /* interrupt mask registers */
38 #define TPS65090_INT_MSK 0x2
39 #define TPS65090_INT_MSK2 0x3
41 #define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
42 #define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
43 #define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
44 #define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
45 #define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
46 #define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
47 #define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
48 #define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
49 #define TPS65090_INT2_MASK_OVERLOAD_FET1 1
50 #define TPS65090_INT2_MASK_OVERLOAD_FET2 2
51 #define TPS65090_INT2_MASK_OVERLOAD_FET3 3
52 #define TPS65090_INT2_MASK_OVERLOAD_FET4 4
53 #define TPS65090_INT2_MASK_OVERLOAD_FET5 5
54 #define TPS65090_INT2_MASK_OVERLOAD_FET6 6
55 #define TPS65090_INT2_MASK_OVERLOAD_FET7 7
57 static struct mfd_cell tps65090s[] = {
59 .name = "tps65090-pmic",
62 .name = "tps65090-charger",
66 static const struct regmap_irq tps65090_irqs[] = {
68 [TPS65090_IRQ_VAC_STATUS_CHANGE] = {
69 .mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
71 [TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
72 .mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
74 [TPS65090_IRQ_BAT_STATUS_CHANGE] = {
75 .mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
77 [TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
78 .mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
80 [TPS65090_IRQ_CHARGING_COMPLETE] = {
81 .mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
83 [TPS65090_IRQ_OVERLOAD_DCDC1] = {
84 .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
86 [TPS65090_IRQ_OVERLOAD_DCDC2] = {
87 .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
90 [TPS65090_IRQ_OVERLOAD_DCDC3] = {
92 .mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
94 [TPS65090_IRQ_OVERLOAD_FET1] = {
96 .mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
98 [TPS65090_IRQ_OVERLOAD_FET2] = {
100 .mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
102 [TPS65090_IRQ_OVERLOAD_FET3] = {
104 .mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
106 [TPS65090_IRQ_OVERLOAD_FET4] = {
108 .mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
110 [TPS65090_IRQ_OVERLOAD_FET5] = {
112 .mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
114 [TPS65090_IRQ_OVERLOAD_FET6] = {
116 .mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
118 [TPS65090_IRQ_OVERLOAD_FET7] = {
120 .mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
124 static struct regmap_irq_chip tps65090_irq_chip = {
126 .irqs = tps65090_irqs,
127 .num_irqs = ARRAY_SIZE(tps65090_irqs),
128 .num_regs = NUM_INT_REG,
129 .status_base = TPS65090_INT_STS,
130 .mask_base = TPS65090_INT_MSK,
134 static bool is_volatile_reg(struct device *dev, unsigned int reg)
136 if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2))
142 static const struct regmap_config tps65090_regmap_config = {
145 .max_register = TOTAL_NUM_REG,
146 .num_reg_defaults_raw = TOTAL_NUM_REG,
147 .cache_type = REGCACHE_RBTREE,
148 .volatile_reg = is_volatile_reg,
151 static int tps65090_i2c_probe(struct i2c_client *client,
152 const struct i2c_device_id *id)
154 struct tps65090_platform_data *pdata = client->dev.platform_data;
155 struct tps65090 *tps65090;
159 dev_err(&client->dev, "tps65090 requires platform data\n");
163 tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
165 dev_err(&client->dev, "mem alloc for tps65090 failed\n");
169 tps65090->dev = &client->dev;
170 i2c_set_clientdata(client, tps65090);
172 tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
173 if (IS_ERR(tps65090->rmap)) {
174 ret = PTR_ERR(tps65090->rmap);
175 dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
180 ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
181 IRQF_ONESHOT | IRQF_TRIGGER_LOW, pdata->irq_base,
182 &tps65090_irq_chip, &tps65090->irq_data);
184 dev_err(&client->dev,
185 "IRQ init failed with err: %d\n", ret);
190 ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
191 ARRAY_SIZE(tps65090s), NULL,
192 regmap_irq_chip_get_base(tps65090->irq_data), NULL);
194 dev_err(&client->dev, "add mfd devices failed with err: %d\n",
203 regmap_del_irq_chip(client->irq, tps65090->irq_data);
207 static int tps65090_i2c_remove(struct i2c_client *client)
209 struct tps65090 *tps65090 = i2c_get_clientdata(client);
211 mfd_remove_devices(tps65090->dev);
213 regmap_del_irq_chip(client->irq, tps65090->irq_data);
218 #ifdef CONFIG_PM_SLEEP
219 static int tps65090_suspend(struct device *dev)
221 struct i2c_client *client = to_i2c_client(dev);
223 disable_irq(client->irq);
227 static int tps65090_resume(struct device *dev)
229 struct i2c_client *client = to_i2c_client(dev);
231 enable_irq(client->irq);
236 static const struct dev_pm_ops tps65090_pm_ops = {
237 SET_SYSTEM_SLEEP_PM_OPS(tps65090_suspend, tps65090_resume)
240 static const struct i2c_device_id tps65090_id_table[] = {
244 MODULE_DEVICE_TABLE(i2c, tps65090_id_table);
246 static struct i2c_driver tps65090_driver = {
249 .owner = THIS_MODULE,
250 .pm = &tps65090_pm_ops,
252 .probe = tps65090_i2c_probe,
253 .remove = tps65090_i2c_remove,
254 .id_table = tps65090_id_table,
257 static int __init tps65090_init(void)
259 return i2c_add_driver(&tps65090_driver);
261 subsys_initcall(tps65090_init);
263 static void __exit tps65090_exit(void)
265 i2c_del_driver(&tps65090_driver);
267 module_exit(tps65090_exit);
269 MODULE_DESCRIPTION("TPS65090 core driver");
270 MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
271 MODULE_LICENSE("GPL v2");