Root/
1 | /* |
2 | * Core driver for TI TPS65090 PMIC family |
3 | * |
4 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. |
5 | |
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. |
9 | |
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 |
13 | * more details. |
14 | |
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/>. |
17 | */ |
18 | |
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/of.h> |
29 | #include <linux/of_device.h> |
30 | #include <linux/err.h> |
31 | |
32 | #define NUM_INT_REG 2 |
33 | #define TOTAL_NUM_REG 0x18 |
34 | |
35 | /* interrupt status registers */ |
36 | #define TPS65090_INT_STS 0x0 |
37 | #define TPS65090_INT_STS2 0x1 |
38 | |
39 | /* interrupt mask registers */ |
40 | #define TPS65090_INT_MSK 0x2 |
41 | #define TPS65090_INT_MSK2 0x3 |
42 | |
43 | #define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1 |
44 | #define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2 |
45 | #define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3 |
46 | #define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4 |
47 | #define TPS65090_INT1_MASK_CHARGING_COMPLETE 5 |
48 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6 |
49 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7 |
50 | #define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0 |
51 | #define TPS65090_INT2_MASK_OVERLOAD_FET1 1 |
52 | #define TPS65090_INT2_MASK_OVERLOAD_FET2 2 |
53 | #define TPS65090_INT2_MASK_OVERLOAD_FET3 3 |
54 | #define TPS65090_INT2_MASK_OVERLOAD_FET4 4 |
55 | #define TPS65090_INT2_MASK_OVERLOAD_FET5 5 |
56 | #define TPS65090_INT2_MASK_OVERLOAD_FET6 6 |
57 | #define TPS65090_INT2_MASK_OVERLOAD_FET7 7 |
58 | |
59 | static struct mfd_cell tps65090s[] = { |
60 | { |
61 | .name = "tps65090-pmic", |
62 | }, |
63 | { |
64 | .name = "tps65090-charger", |
65 | }, |
66 | }; |
67 | |
68 | static const struct regmap_irq tps65090_irqs[] = { |
69 | /* INT1 IRQs*/ |
70 | [TPS65090_IRQ_VAC_STATUS_CHANGE] = { |
71 | .mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE, |
72 | }, |
73 | [TPS65090_IRQ_VSYS_STATUS_CHANGE] = { |
74 | .mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE, |
75 | }, |
76 | [TPS65090_IRQ_BAT_STATUS_CHANGE] = { |
77 | .mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE, |
78 | }, |
79 | [TPS65090_IRQ_CHARGING_STATUS_CHANGE] = { |
80 | .mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE, |
81 | }, |
82 | [TPS65090_IRQ_CHARGING_COMPLETE] = { |
83 | .mask = TPS65090_INT1_MASK_CHARGING_COMPLETE, |
84 | }, |
85 | [TPS65090_IRQ_OVERLOAD_DCDC1] = { |
86 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1, |
87 | }, |
88 | [TPS65090_IRQ_OVERLOAD_DCDC2] = { |
89 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2, |
90 | }, |
91 | /* INT2 IRQs*/ |
92 | [TPS65090_IRQ_OVERLOAD_DCDC3] = { |
93 | .reg_offset = 1, |
94 | .mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3, |
95 | }, |
96 | [TPS65090_IRQ_OVERLOAD_FET1] = { |
97 | .reg_offset = 1, |
98 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET1, |
99 | }, |
100 | [TPS65090_IRQ_OVERLOAD_FET2] = { |
101 | .reg_offset = 1, |
102 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET2, |
103 | }, |
104 | [TPS65090_IRQ_OVERLOAD_FET3] = { |
105 | .reg_offset = 1, |
106 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET3, |
107 | }, |
108 | [TPS65090_IRQ_OVERLOAD_FET4] = { |
109 | .reg_offset = 1, |
110 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET4, |
111 | }, |
112 | [TPS65090_IRQ_OVERLOAD_FET5] = { |
113 | .reg_offset = 1, |
114 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET5, |
115 | }, |
116 | [TPS65090_IRQ_OVERLOAD_FET6] = { |
117 | .reg_offset = 1, |
118 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET6, |
119 | }, |
120 | [TPS65090_IRQ_OVERLOAD_FET7] = { |
121 | .reg_offset = 1, |
122 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET7, |
123 | }, |
124 | }; |
125 | |
126 | static struct regmap_irq_chip tps65090_irq_chip = { |
127 | .name = "tps65090", |
128 | .irqs = tps65090_irqs, |
129 | .num_irqs = ARRAY_SIZE(tps65090_irqs), |
130 | .num_regs = NUM_INT_REG, |
131 | .status_base = TPS65090_INT_STS, |
132 | .mask_base = TPS65090_INT_MSK, |
133 | .mask_invert = true, |
134 | }; |
135 | |
136 | static bool is_volatile_reg(struct device *dev, unsigned int reg) |
137 | { |
138 | if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2)) |
139 | return true; |
140 | else |
141 | return false; |
142 | } |
143 | |
144 | static const struct regmap_config tps65090_regmap_config = { |
145 | .reg_bits = 8, |
146 | .val_bits = 8, |
147 | .max_register = TOTAL_NUM_REG, |
148 | .num_reg_defaults_raw = TOTAL_NUM_REG, |
149 | .cache_type = REGCACHE_RBTREE, |
150 | .volatile_reg = is_volatile_reg, |
151 | }; |
152 | |
153 | #ifdef CONFIG_OF |
154 | static const struct of_device_id tps65090_of_match[] = { |
155 | { .compatible = "ti,tps65090",}, |
156 | {}, |
157 | }; |
158 | MODULE_DEVICE_TABLE(of, tps65090_of_match); |
159 | #endif |
160 | |
161 | static int tps65090_i2c_probe(struct i2c_client *client, |
162 | const struct i2c_device_id *id) |
163 | { |
164 | struct tps65090_platform_data *pdata = client->dev.platform_data; |
165 | int irq_base = 0; |
166 | struct tps65090 *tps65090; |
167 | int ret; |
168 | |
169 | if (!pdata && !client->dev.of_node) { |
170 | dev_err(&client->dev, |
171 | "tps65090 requires platform data or of_node\n"); |
172 | return -EINVAL; |
173 | } |
174 | |
175 | if (pdata) |
176 | irq_base = pdata->irq_base; |
177 | |
178 | tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL); |
179 | if (!tps65090) { |
180 | dev_err(&client->dev, "mem alloc for tps65090 failed\n"); |
181 | return -ENOMEM; |
182 | } |
183 | |
184 | tps65090->dev = &client->dev; |
185 | i2c_set_clientdata(client, tps65090); |
186 | |
187 | tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config); |
188 | if (IS_ERR(tps65090->rmap)) { |
189 | ret = PTR_ERR(tps65090->rmap); |
190 | dev_err(&client->dev, "regmap_init failed with err: %d\n", ret); |
191 | return ret; |
192 | } |
193 | |
194 | if (client->irq) { |
195 | ret = regmap_add_irq_chip(tps65090->rmap, client->irq, |
196 | IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base, |
197 | &tps65090_irq_chip, &tps65090->irq_data); |
198 | if (ret) { |
199 | dev_err(&client->dev, |
200 | "IRQ init failed with err: %d\n", ret); |
201 | return ret; |
202 | } |
203 | } |
204 | |
205 | ret = mfd_add_devices(tps65090->dev, -1, tps65090s, |
206 | ARRAY_SIZE(tps65090s), NULL, |
207 | 0, regmap_irq_get_domain(tps65090->irq_data)); |
208 | if (ret) { |
209 | dev_err(&client->dev, "add mfd devices failed with err: %d\n", |
210 | ret); |
211 | goto err_irq_exit; |
212 | } |
213 | |
214 | return 0; |
215 | |
216 | err_irq_exit: |
217 | if (client->irq) |
218 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
219 | return ret; |
220 | } |
221 | |
222 | static int tps65090_i2c_remove(struct i2c_client *client) |
223 | { |
224 | struct tps65090 *tps65090 = i2c_get_clientdata(client); |
225 | |
226 | mfd_remove_devices(tps65090->dev); |
227 | if (client->irq) |
228 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
229 | |
230 | return 0; |
231 | } |
232 | |
233 | static const struct i2c_device_id tps65090_id_table[] = { |
234 | { "tps65090", 0 }, |
235 | { }, |
236 | }; |
237 | MODULE_DEVICE_TABLE(i2c, tps65090_id_table); |
238 | |
239 | static struct i2c_driver tps65090_driver = { |
240 | .driver = { |
241 | .name = "tps65090", |
242 | .owner = THIS_MODULE, |
243 | .of_match_table = of_match_ptr(tps65090_of_match), |
244 | }, |
245 | .probe = tps65090_i2c_probe, |
246 | .remove = tps65090_i2c_remove, |
247 | .id_table = tps65090_id_table, |
248 | }; |
249 | |
250 | static int __init tps65090_init(void) |
251 | { |
252 | return i2c_add_driver(&tps65090_driver); |
253 | } |
254 | subsys_initcall(tps65090_init); |
255 | |
256 | static void __exit tps65090_exit(void) |
257 | { |
258 | i2c_del_driver(&tps65090_driver); |
259 | } |
260 | module_exit(tps65090_exit); |
261 | |
262 | MODULE_DESCRIPTION("TPS65090 core driver"); |
263 | MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>"); |
264 | MODULE_LICENSE("GPL v2"); |
265 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9