1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
/*
* Core driver for TI TPS65090 PMIC family
*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tps65090.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/err.h>
#define NUM_INT_REG 2
#define TOTAL_NUM_REG 0x18
#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
#define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
#define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
#define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
#define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
#define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
#define TPS65090_INT2_MASK_OVERLOAD_FET1 1
#define TPS65090_INT2_MASK_OVERLOAD_FET2 2
#define TPS65090_INT2_MASK_OVERLOAD_FET3 3
#define TPS65090_INT2_MASK_OVERLOAD_FET4 4
#define TPS65090_INT2_MASK_OVERLOAD_FET5 5
#define TPS65090_INT2_MASK_OVERLOAD_FET6 6
#define TPS65090_INT2_MASK_OVERLOAD_FET7 7
static struct resource charger_resources[] = {
{
.start = TPS65090_IRQ_VAC_STATUS_CHANGE,
.end = TPS65090_IRQ_VAC_STATUS_CHANGE,
.flags = IORESOURCE_IRQ,
}
};
enum tps65090_cells {
PMIC = 0,
CHARGER = 1,
};
static struct mfd_cell tps65090s[] = {
[PMIC] = {
.name = "tps65090-pmic",
},
[CHARGER] = {
.name = "tps65090-charger",
.num_resources = ARRAY_SIZE(charger_resources),
.resources = &charger_resources[0],
.of_compatible = "ti,tps65090-charger",
},
};
static const struct regmap_irq tps65090_irqs[] = {
/* INT1 IRQs*/
[TPS65090_IRQ_VAC_STATUS_CHANGE] = {
.mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
},
[TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
.mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
},
[TPS65090_IRQ_BAT_STATUS_CHANGE] = {
.mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
},
[TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
.mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
},
[TPS65090_IRQ_CHARGING_COMPLETE] = {
.mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
},
[TPS65090_IRQ_OVERLOAD_DCDC1] = {
.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
},
[TPS65090_IRQ_OVERLOAD_DCDC2] = {
.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
},
/* INT2 IRQs*/
[TPS65090_IRQ_OVERLOAD_DCDC3] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
},
[TPS65090_IRQ_OVERLOAD_FET1] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
},
[TPS65090_IRQ_OVERLOAD_FET2] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
},
[TPS65090_IRQ_OVERLOAD_FET3] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
},
[TPS65090_IRQ_OVERLOAD_FET4] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
},
[TPS65090_IRQ_OVERLOAD_FET5] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
},
[TPS65090_IRQ_OVERLOAD_FET6] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
},
[TPS65090_IRQ_OVERLOAD_FET7] = {
.reg_offset = 1,
.mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
},
};
static struct regmap_irq_chip tps65090_irq_chip = {
.name = "tps65090",
.irqs = tps65090_irqs,
.num_irqs = ARRAY_SIZE(tps65090_irqs),
.num_regs = NUM_INT_REG,
.status_base = TPS65090_REG_INTR_STS,
.mask_base = TPS65090_REG_INTR_MASK,
.mask_invert = true,
};
static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
/* Nearly all registers have status bits mixed in, except a few */
switch (reg) {
case TPS65090_REG_INTR_MASK:
case TPS65090_REG_INTR_MASK2:
case TPS65090_REG_CG_CTRL0:
case TPS65090_REG_CG_CTRL1:
case TPS65090_REG_CG_CTRL2:
case TPS65090_REG_CG_CTRL3:
case TPS65090_REG_CG_CTRL4:
case TPS65090_REG_CG_CTRL5:
return false;
}
return true;
}
static const struct regmap_config tps65090_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = TOTAL_NUM_REG,
.num_reg_defaults_raw = TOTAL_NUM_REG,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = is_volatile_reg,
};
#ifdef CONFIG_OF
static const struct of_device_id tps65090_of_match[] = {
{ .compatible = "ti,tps65090",},
{},
};
MODULE_DEVICE_TABLE(of, tps65090_of_match);
#endif
static int tps65090_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tps65090_platform_data *pdata = dev_get_platdata(&client->dev);
int irq_base = 0;
struct tps65090 *tps65090;
int ret;
if (!pdata && !client->dev.of_node) {
dev_err(&client->dev,
"tps65090 requires platform data or of_node\n");
return -EINVAL;
}
if (pdata)
irq_base = pdata->irq_base;
tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
if (!tps65090) {
dev_err(&client->dev, "mem alloc for tps65090 failed\n");
return -ENOMEM;
}
tps65090->dev = &client->dev;
i2c_set_clientdata(client, tps65090);
tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
if (IS_ERR(tps65090->rmap)) {
ret = PTR_ERR(tps65090->rmap);
dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
return ret;
}
if (client->irq) {
ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base,
&tps65090_irq_chip, &tps65090->irq_data);
if (ret) {
dev_err(&client->dev,
"IRQ init failed with err: %d\n", ret);
return ret;
}
} else {
/* Don't tell children they have an IRQ that'll never fire */
tps65090s[CHARGER].num_resources = 0;
}
ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
ARRAY_SIZE(tps65090s), NULL,
0, regmap_irq_get_domain(tps65090->irq_data));
if (ret) {
dev_err(&client->dev, "add mfd devices failed with err: %d\n",
ret);
goto err_irq_exit;
}
return 0;
err_irq_exit:
if (client->irq)
regmap_del_irq_chip(client->irq, tps65090->irq_data);
return ret;
}
static int tps65090_i2c_remove(struct i2c_client *client)
{
struct tps65090 *tps65090 = i2c_get_clientdata(client);
mfd_remove_devices(tps65090->dev);
if (client->irq)
regmap_del_irq_chip(client->irq, tps65090->irq_data);
return 0;
}
static const struct i2c_device_id tps65090_id_table[] = {
{ "tps65090", 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, tps65090_id_table);
static struct i2c_driver tps65090_driver = {
.driver = {
.name = "tps65090",
.of_match_table = of_match_ptr(tps65090_of_match),
},
.probe = tps65090_i2c_probe,
.remove = tps65090_i2c_remove,
.id_table = tps65090_id_table,
};
static int __init tps65090_init(void)
{
return i2c_add_driver(&tps65090_driver);
}
subsys_initcall(tps65090_init);
static void __exit tps65090_exit(void)
{
i2c_del_driver(&tps65090_driver);
}
module_exit(tps65090_exit);
MODULE_DESCRIPTION("TPS65090 core driver");
MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
MODULE_LICENSE("GPL v2");
|
