Commit | Line | Data |
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27c6750e GG |
1 | /* |
2 | * tps65910.c -- TI TPS6591x | |
3 | * | |
4 | * Copyright 2010 Texas Instruments Inc. | |
5 | * | |
6 | * Author: Graeme Gregory <gg@slimlogic.co.uk> | |
7 | * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/init.h> | |
dc9913a0 | 19 | #include <linux/err.h> |
27c6750e GG |
20 | #include <linux/slab.h> |
21 | #include <linux/i2c.h> | |
27c6750e | 22 | #include <linux/mfd/core.h> |
dc9913a0 | 23 | #include <linux/regmap.h> |
27c6750e | 24 | #include <linux/mfd/tps65910.h> |
cd4209ce | 25 | #include <linux/of_device.h> |
27c6750e GG |
26 | |
27 | static struct mfd_cell tps65910s[] = { | |
32df986e LD |
28 | { |
29 | .name = "tps65910-gpio", | |
30 | }, | |
27c6750e GG |
31 | { |
32 | .name = "tps65910-pmic", | |
33 | }, | |
34 | { | |
35 | .name = "tps65910-rtc", | |
36 | }, | |
37 | { | |
38 | .name = "tps65910-power", | |
39 | }, | |
40 | }; | |
41 | ||
42 | ||
dc9913a0 LD |
43 | static bool is_volatile_reg(struct device *dev, unsigned int reg) |
44 | { | |
45 | struct tps65910 *tps65910 = dev_get_drvdata(dev); | |
46 | ||
47 | /* | |
48 | * Caching all regulator registers. | |
49 | * All regualator register address range is same for | |
50 | * TPS65910 and TPS65911 | |
51 | */ | |
52 | if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) { | |
53 | /* Check for non-existing register */ | |
54 | if (tps65910_chip_id(tps65910) == TPS65910) | |
55 | if ((reg == TPS65911_VDDCTRL_OP) || | |
56 | (reg == TPS65911_VDDCTRL_SR)) | |
57 | return true; | |
58 | return false; | |
59 | } | |
60 | return true; | |
61 | } | |
62 | ||
39ecb037 | 63 | static const struct regmap_config tps65910_regmap_config = { |
dc9913a0 LD |
64 | .reg_bits = 8, |
65 | .val_bits = 8, | |
66 | .volatile_reg = is_volatile_reg, | |
3bf6bf9b | 67 | .max_register = TPS65910_MAX_REGISTER - 1, |
dc9913a0 LD |
68 | .cache_type = REGCACHE_RBTREE, |
69 | }; | |
70 | ||
d02e83cb | 71 | static int __devinit tps65910_ck32k_init(struct tps65910 *tps65910, |
712db99d JH |
72 | struct tps65910_board *pmic_pdata) |
73 | { | |
712db99d JH |
74 | int ret; |
75 | ||
d02e83cb JH |
76 | if (!pmic_pdata->en_ck32k_xtal) |
77 | return 0; | |
78 | ||
79 | ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, | |
712db99d | 80 | DEVCTRL_CK32K_CTRL_MASK); |
d02e83cb JH |
81 | if (ret < 0) { |
82 | dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret); | |
83 | return ret; | |
712db99d JH |
84 | } |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
63745d40 | 89 | static int __devinit tps65910_sleepinit(struct tps65910 *tps65910, |
201cf052 LD |
90 | struct tps65910_board *pmic_pdata) |
91 | { | |
92 | struct device *dev = NULL; | |
93 | int ret = 0; | |
94 | ||
95 | dev = tps65910->dev; | |
96 | ||
97 | if (!pmic_pdata->en_dev_slp) | |
98 | return 0; | |
99 | ||
100 | /* enabling SLEEP device state */ | |
3f7e8275 | 101 | ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL, |
201cf052 LD |
102 | DEVCTRL_DEV_SLP_MASK); |
103 | if (ret < 0) { | |
104 | dev_err(dev, "set dev_slp failed: %d\n", ret); | |
105 | goto err_sleep_init; | |
106 | } | |
107 | ||
108 | /* Return if there is no sleep keepon data. */ | |
109 | if (!pmic_pdata->slp_keepon) | |
110 | return 0; | |
111 | ||
112 | if (pmic_pdata->slp_keepon->therm_keepon) { | |
3f7e8275 RK |
113 | ret = tps65910_reg_set_bits(tps65910, |
114 | TPS65910_SLEEP_KEEP_RES_ON, | |
201cf052 LD |
115 | SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK); |
116 | if (ret < 0) { | |
117 | dev_err(dev, "set therm_keepon failed: %d\n", ret); | |
118 | goto disable_dev_slp; | |
119 | } | |
120 | } | |
121 | ||
122 | if (pmic_pdata->slp_keepon->clkout32k_keepon) { | |
3f7e8275 RK |
123 | ret = tps65910_reg_set_bits(tps65910, |
124 | TPS65910_SLEEP_KEEP_RES_ON, | |
201cf052 LD |
125 | SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK); |
126 | if (ret < 0) { | |
127 | dev_err(dev, "set clkout32k_keepon failed: %d\n", ret); | |
128 | goto disable_dev_slp; | |
129 | } | |
130 | } | |
131 | ||
132 | if (pmic_pdata->slp_keepon->i2chs_keepon) { | |
3f7e8275 RK |
133 | ret = tps65910_reg_set_bits(tps65910, |
134 | TPS65910_SLEEP_KEEP_RES_ON, | |
201cf052 LD |
135 | SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK); |
136 | if (ret < 0) { | |
137 | dev_err(dev, "set i2chs_keepon failed: %d\n", ret); | |
138 | goto disable_dev_slp; | |
139 | } | |
140 | } | |
141 | ||
142 | return 0; | |
143 | ||
144 | disable_dev_slp: | |
3f7e8275 RK |
145 | tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL, |
146 | DEVCTRL_DEV_SLP_MASK); | |
201cf052 LD |
147 | |
148 | err_sleep_init: | |
149 | return ret; | |
150 | } | |
151 | ||
cd4209ce RK |
152 | #ifdef CONFIG_OF |
153 | static struct of_device_id tps65910_of_match[] = { | |
154 | { .compatible = "ti,tps65910", .data = (void *)TPS65910}, | |
155 | { .compatible = "ti,tps65911", .data = (void *)TPS65911}, | |
156 | { }, | |
157 | }; | |
158 | MODULE_DEVICE_TABLE(of, tps65910_of_match); | |
159 | ||
160 | static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, | |
161 | int *chip_id) | |
162 | { | |
163 | struct device_node *np = client->dev.of_node; | |
164 | struct tps65910_board *board_info; | |
165 | unsigned int prop; | |
166 | const struct of_device_id *match; | |
cd4209ce | 167 | int ret = 0; |
cd4209ce RK |
168 | |
169 | match = of_match_device(tps65910_of_match, &client->dev); | |
170 | if (!match) { | |
171 | dev_err(&client->dev, "Failed to find matching dt id\n"); | |
172 | return NULL; | |
173 | } | |
174 | ||
175 | *chip_id = (int)match->data; | |
176 | ||
177 | board_info = devm_kzalloc(&client->dev, sizeof(*board_info), | |
178 | GFP_KERNEL); | |
179 | if (!board_info) { | |
180 | dev_err(&client->dev, "Failed to allocate pdata\n"); | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop); | |
185 | if (!ret) | |
186 | board_info->vmbch_threshold = prop; | |
187 | else if (*chip_id == TPS65911) | |
188 | dev_warn(&client->dev, "VMBCH-Threshold not specified"); | |
189 | ||
190 | ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop); | |
191 | if (!ret) | |
192 | board_info->vmbch2_threshold = prop; | |
193 | else if (*chip_id == TPS65911) | |
194 | dev_warn(&client->dev, "VMBCH2-Threshold not specified"); | |
195 | ||
bcc1dd4c JH |
196 | prop = of_property_read_bool(np, "ti,en-ck32k-xtal"); |
197 | board_info->en_ck32k_xtal = prop; | |
198 | ||
cd4209ce RK |
199 | board_info->irq = client->irq; |
200 | board_info->irq_base = -1; | |
cd4209ce RK |
201 | |
202 | return board_info; | |
203 | } | |
204 | #else | |
7f65f74c SO |
205 | static inline |
206 | struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, | |
207 | int *chip_id) | |
cd4209ce RK |
208 | { |
209 | return NULL; | |
210 | } | |
211 | #endif | |
201cf052 | 212 | |
63745d40 MB |
213 | static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, |
214 | const struct i2c_device_id *id) | |
27c6750e GG |
215 | { |
216 | struct tps65910 *tps65910; | |
2537df72 | 217 | struct tps65910_board *pmic_plat_data; |
cb8d8654 | 218 | struct tps65910_board *of_pmic_plat_data = NULL; |
e3471bdc | 219 | struct tps65910_platform_data *init_data; |
27c6750e | 220 | int ret = 0; |
cd4209ce | 221 | int chip_id = id->driver_data; |
27c6750e | 222 | |
2537df72 | 223 | pmic_plat_data = dev_get_platdata(&i2c->dev); |
cd4209ce | 224 | |
cb8d8654 | 225 | if (!pmic_plat_data && i2c->dev.of_node) { |
cd4209ce | 226 | pmic_plat_data = tps65910_parse_dt(i2c, &chip_id); |
cb8d8654 LD |
227 | of_pmic_plat_data = pmic_plat_data; |
228 | } | |
cd4209ce | 229 | |
2537df72 GG |
230 | if (!pmic_plat_data) |
231 | return -EINVAL; | |
232 | ||
63fe7dee | 233 | init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL); |
e3471bdc GG |
234 | if (init_data == NULL) |
235 | return -ENOMEM; | |
236 | ||
63fe7dee LD |
237 | tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL); |
238 | if (tps65910 == NULL) | |
27c6750e GG |
239 | return -ENOMEM; |
240 | ||
cb8d8654 | 241 | tps65910->of_plat_data = of_pmic_plat_data; |
27c6750e GG |
242 | i2c_set_clientdata(i2c, tps65910); |
243 | tps65910->dev = &i2c->dev; | |
244 | tps65910->i2c_client = i2c; | |
cd4209ce | 245 | tps65910->id = chip_id; |
27c6750e GG |
246 | mutex_init(&tps65910->io_mutex); |
247 | ||
63fe7dee | 248 | tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config); |
dc9913a0 LD |
249 | if (IS_ERR(tps65910->regmap)) { |
250 | ret = PTR_ERR(tps65910->regmap); | |
251 | dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); | |
63fe7dee | 252 | return ret; |
dc9913a0 LD |
253 | } |
254 | ||
27c6750e GG |
255 | ret = mfd_add_devices(tps65910->dev, -1, |
256 | tps65910s, ARRAY_SIZE(tps65910s), | |
55692af5 | 257 | NULL, 0, NULL); |
63fe7dee LD |
258 | if (ret < 0) { |
259 | dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret); | |
260 | return ret; | |
261 | } | |
27c6750e | 262 | |
b1224cd1 | 263 | init_data->irq = pmic_plat_data->irq; |
1773140f | 264 | init_data->irq_base = pmic_plat_data->irq_base; |
b1224cd1 | 265 | |
1e351a95 | 266 | tps65910_irq_init(tps65910, init_data->irq, init_data); |
d02e83cb | 267 | tps65910_ck32k_init(tps65910, pmic_plat_data); |
201cf052 LD |
268 | tps65910_sleepinit(tps65910, pmic_plat_data); |
269 | ||
27c6750e GG |
270 | return ret; |
271 | } | |
272 | ||
63745d40 | 273 | static __devexit int tps65910_i2c_remove(struct i2c_client *i2c) |
27c6750e GG |
274 | { |
275 | struct tps65910 *tps65910 = i2c_get_clientdata(i2c); | |
276 | ||
ec2328c3 | 277 | tps65910_irq_exit(tps65910); |
1e351a95 | 278 | mfd_remove_devices(tps65910->dev); |
27c6750e GG |
279 | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static const struct i2c_device_id tps65910_i2c_id[] = { | |
79557056 JEC |
284 | { "tps65910", TPS65910 }, |
285 | { "tps65911", TPS65911 }, | |
27c6750e GG |
286 | { } |
287 | }; | |
288 | MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id); | |
289 | ||
290 | ||
291 | static struct i2c_driver tps65910_i2c_driver = { | |
292 | .driver = { | |
293 | .name = "tps65910", | |
294 | .owner = THIS_MODULE, | |
cd4209ce | 295 | .of_match_table = of_match_ptr(tps65910_of_match), |
27c6750e GG |
296 | }, |
297 | .probe = tps65910_i2c_probe, | |
63745d40 | 298 | .remove = __devexit_p(tps65910_i2c_remove), |
27c6750e GG |
299 | .id_table = tps65910_i2c_id, |
300 | }; | |
301 | ||
302 | static int __init tps65910_i2c_init(void) | |
303 | { | |
304 | return i2c_add_driver(&tps65910_i2c_driver); | |
305 | } | |
306 | /* init early so consumer devices can complete system boot */ | |
307 | subsys_initcall(tps65910_i2c_init); | |
308 | ||
309 | static void __exit tps65910_i2c_exit(void) | |
310 | { | |
311 | i2c_del_driver(&tps65910_i2c_driver); | |
312 | } | |
313 | module_exit(tps65910_i2c_exit); | |
314 | ||
315 | MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); | |
316 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>"); | |
317 | MODULE_DESCRIPTION("TPS6591x chip family multi-function driver"); | |
318 | MODULE_LICENSE("GPL"); |