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3c33be06 VB |
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> | |
40719314 LD |
28 | #include <linux/of.h> |
29 | #include <linux/of_device.h> | |
3c33be06 VB |
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 | ||
759f2598 LD |
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 | |
3c33be06 VB |
58 | |
59 | static struct mfd_cell tps65090s[] = { | |
60 | { | |
b7e53786 | 61 | .name = "tps65090-pmic", |
3c33be06 VB |
62 | }, |
63 | { | |
e2e8ffc9 | 64 | .name = "tps65090-charger", |
3c33be06 VB |
65 | }, |
66 | }; | |
67 | ||
759f2598 LD |
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 | }; | |
3c33be06 | 125 | |
759f2598 LD |
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 | }; | |
3c33be06 VB |
135 | |
136 | static bool is_volatile_reg(struct device *dev, unsigned int reg) | |
137 | { | |
759f2598 | 138 | if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2)) |
3c33be06 VB |
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 | ||
40719314 LD |
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 | ||
f791be49 | 161 | static int tps65090_i2c_probe(struct i2c_client *client, |
3c33be06 VB |
162 | const struct i2c_device_id *id) |
163 | { | |
164 | struct tps65090_platform_data *pdata = client->dev.platform_data; | |
40719314 | 165 | int irq_base = 0; |
3c33be06 VB |
166 | struct tps65090 *tps65090; |
167 | int ret; | |
168 | ||
40719314 LD |
169 | if (!pdata && !client->dev.of_node) { |
170 | dev_err(&client->dev, | |
171 | "tps65090 requires platform data or of_node\n"); | |
3c33be06 VB |
172 | return -EINVAL; |
173 | } | |
174 | ||
40719314 LD |
175 | if (pdata) |
176 | irq_base = pdata->irq_base; | |
177 | ||
e8e6f047 LD |
178 | tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL); |
179 | if (!tps65090) { | |
180 | dev_err(&client->dev, "mem alloc for tps65090 failed\n"); | |
3c33be06 | 181 | return -ENOMEM; |
e8e6f047 | 182 | } |
3c33be06 | 183 | |
3c33be06 VB |
184 | tps65090->dev = &client->dev; |
185 | i2c_set_clientdata(client, tps65090); | |
186 | ||
3863db3e | 187 | tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config); |
3c33be06 | 188 | if (IS_ERR(tps65090->rmap)) { |
b683a0a6 AL |
189 | ret = PTR_ERR(tps65090->rmap); |
190 | dev_err(&client->dev, "regmap_init failed with err: %d\n", ret); | |
759f2598 LD |
191 | return ret; |
192 | } | |
193 | ||
194 | if (client->irq) { | |
195 | ret = regmap_add_irq_chip(tps65090->rmap, client->irq, | |
40719314 | 196 | IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base, |
759f2598 LD |
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 | } | |
b683a0a6 | 203 | } |
3c33be06 VB |
204 | |
205 | ret = mfd_add_devices(tps65090->dev, -1, tps65090s, | |
759f2598 | 206 | ARRAY_SIZE(tps65090s), NULL, |
4f979ed5 | 207 | 0, regmap_irq_get_domain(tps65090->irq_data)); |
3c33be06 VB |
208 | if (ret) { |
209 | dev_err(&client->dev, "add mfd devices failed with err: %d\n", | |
210 | ret); | |
1d88f7a0 | 211 | goto err_irq_exit; |
3c33be06 VB |
212 | } |
213 | ||
214 | return 0; | |
215 | ||
3c33be06 VB |
216 | err_irq_exit: |
217 | if (client->irq) | |
759f2598 | 218 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
3c33be06 VB |
219 | return ret; |
220 | } | |
221 | ||
4740f73f | 222 | static int tps65090_i2c_remove(struct i2c_client *client) |
3c33be06 VB |
223 | { |
224 | struct tps65090 *tps65090 = i2c_get_clientdata(client); | |
225 | ||
226 | mfd_remove_devices(tps65090->dev); | |
3c33be06 | 227 | if (client->irq) |
759f2598 | 228 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
3c33be06 VB |
229 | |
230 | return 0; | |
231 | } | |
232 | ||
3c33be06 VB |
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, | |
40719314 | 243 | .of_match_table = of_match_ptr(tps65090_of_match), |
3c33be06 VB |
244 | }, |
245 | .probe = tps65090_i2c_probe, | |
84449216 | 246 | .remove = tps65090_i2c_remove, |
3c33be06 VB |
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"); |