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6219929f LD |
1 | /* |
2 | * tps62360.c -- TI tps62360 | |
3 | * | |
d1cf4f65 | 4 | * Driver for processor core supply tps62360, tps62361B, tps62362 and tps62363. |
6219929f LD |
5 | * |
6 | * Copyright (c) 2012, NVIDIA Corporation. | |
7 | * | |
8 | * Author: Laxman Dewangan <ldewangan@nvidia.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation version 2. | |
13 | * | |
14 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, | |
15 | * whether express or implied; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
22 | * 02111-1307, USA | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/err.h> | |
684ae39b LD |
29 | #include <linux/of.h> |
30 | #include <linux/of_device.h> | |
31 | #include <linux/of_gpio.h> | |
32 | #include <linux/regulator/of_regulator.h> | |
6219929f LD |
33 | #include <linux/platform_device.h> |
34 | #include <linux/regulator/driver.h> | |
35 | #include <linux/regulator/machine.h> | |
36 | #include <linux/regulator/tps62360.h> | |
37 | #include <linux/gpio.h> | |
38 | #include <linux/i2c.h> | |
6219929f LD |
39 | #include <linux/slab.h> |
40 | #include <linux/regmap.h> | |
41 | ||
42 | /* Register definitions */ | |
43 | #define REG_VSET0 0 | |
44 | #define REG_VSET1 1 | |
45 | #define REG_VSET2 2 | |
46 | #define REG_VSET3 3 | |
47 | #define REG_CONTROL 4 | |
48 | #define REG_TEMP 5 | |
49 | #define REG_RAMPCTRL 6 | |
50 | #define REG_CHIPID 8 | |
51 | ||
9a00630c LD |
52 | #define FORCE_PWM_ENABLE BIT(7) |
53 | ||
d1cf4f65 | 54 | enum chips {TPS62360, TPS62361, TPS62362, TPS62363}; |
6219929f | 55 | |
2935fb18 | 56 | #define TPS62360_BASE_VOLTAGE 770000 |
6219929f LD |
57 | #define TPS62360_N_VOLTAGES 64 |
58 | ||
2935fb18 | 59 | #define TPS62361_BASE_VOLTAGE 500000 |
6219929f LD |
60 | #define TPS62361_N_VOLTAGES 128 |
61 | ||
62 | /* tps 62360 chip information */ | |
63 | struct tps62360_chip { | |
6219929f LD |
64 | struct device *dev; |
65 | struct regulator_desc desc; | |
6219929f LD |
66 | struct regulator_dev *rdev; |
67 | struct regmap *regmap; | |
6219929f LD |
68 | int vsel0_gpio; |
69 | int vsel1_gpio; | |
6219929f LD |
70 | u8 voltage_reg_mask; |
71 | bool en_internal_pulldn; | |
6219929f LD |
72 | bool en_discharge; |
73 | bool valid_gpios; | |
74 | int lru_index[4]; | |
75 | int curr_vset_vsel[4]; | |
76 | int curr_vset_id; | |
77 | }; | |
78 | ||
79 | /* | |
80 | * find_voltage_set_register: Find new voltage configuration register | |
81 | * (VSET) id. | |
82 | * The finding of the new VSET register will be based on the LRU mechanism. | |
83 | * Each VSET register will have different voltage configured . This | |
84 | * Function will look if any of the VSET register have requested voltage set | |
85 | * or not. | |
86 | * - If it is already there then it will make that register as most | |
87 | * recently used and return as found so that caller need not to set | |
88 | * the VSET register but need to set the proper gpios to select this | |
89 | * VSET register. | |
90 | * - If requested voltage is not found then it will use the least | |
91 | * recently mechanism to get new VSET register for new configuration | |
92 | * and will return not_found so that caller need to set new VSET | |
93 | * register and then gpios (both). | |
94 | */ | |
95 | static bool find_voltage_set_register(struct tps62360_chip *tps, | |
96 | int req_vsel, int *vset_reg_id) | |
97 | { | |
98 | int i; | |
99 | bool found = false; | |
100 | int new_vset_reg = tps->lru_index[3]; | |
101 | int found_index = 3; | |
2935fb18 | 102 | |
6219929f LD |
103 | for (i = 0; i < 4; ++i) { |
104 | if (tps->curr_vset_vsel[tps->lru_index[i]] == req_vsel) { | |
105 | new_vset_reg = tps->lru_index[i]; | |
106 | found_index = i; | |
107 | found = true; | |
108 | goto update_lru_index; | |
109 | } | |
110 | } | |
111 | ||
112 | update_lru_index: | |
113 | for (i = found_index; i > 0; i--) | |
114 | tps->lru_index[i] = tps->lru_index[i - 1]; | |
115 | ||
116 | tps->lru_index[0] = new_vset_reg; | |
117 | *vset_reg_id = new_vset_reg; | |
118 | return found; | |
119 | } | |
120 | ||
a60cfce0 | 121 | static int tps62360_dcdc_get_voltage_sel(struct regulator_dev *dev) |
6219929f LD |
122 | { |
123 | struct tps62360_chip *tps = rdev_get_drvdata(dev); | |
124 | int vsel; | |
125 | unsigned int data; | |
126 | int ret; | |
127 | ||
128 | ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data); | |
129 | if (ret < 0) { | |
2935fb18 LD |
130 | dev_err(tps->dev, "%s(): register %d read failed with err %d\n", |
131 | __func__, REG_VSET0 + tps->curr_vset_id, ret); | |
6219929f LD |
132 | return ret; |
133 | } | |
134 | vsel = (int)data & tps->voltage_reg_mask; | |
a60cfce0 | 135 | return vsel; |
6219929f LD |
136 | } |
137 | ||
41097afd AL |
138 | static int tps62360_dcdc_set_voltage_sel(struct regulator_dev *dev, |
139 | unsigned selector) | |
6219929f LD |
140 | { |
141 | struct tps62360_chip *tps = rdev_get_drvdata(dev); | |
6219929f LD |
142 | int ret; |
143 | bool found = false; | |
144 | int new_vset_id = tps->curr_vset_id; | |
145 | ||
6219929f LD |
146 | /* |
147 | * If gpios are available to select the VSET register then least | |
148 | * recently used register for new configuration. | |
149 | */ | |
150 | if (tps->valid_gpios) | |
41097afd | 151 | found = find_voltage_set_register(tps, selector, &new_vset_id); |
6219929f LD |
152 | |
153 | if (!found) { | |
154 | ret = regmap_update_bits(tps->regmap, REG_VSET0 + new_vset_id, | |
41097afd | 155 | tps->voltage_reg_mask, selector); |
6219929f | 156 | if (ret < 0) { |
2935fb18 LD |
157 | dev_err(tps->dev, |
158 | "%s(): register %d update failed with err %d\n", | |
159 | __func__, REG_VSET0 + new_vset_id, ret); | |
6219929f LD |
160 | return ret; |
161 | } | |
162 | tps->curr_vset_id = new_vset_id; | |
41097afd | 163 | tps->curr_vset_vsel[new_vset_id] = selector; |
6219929f LD |
164 | } |
165 | ||
166 | /* Select proper VSET register vio gpios */ | |
167 | if (tps->valid_gpios) { | |
2935fb18 | 168 | gpio_set_value_cansleep(tps->vsel0_gpio, new_vset_id & 0x1); |
6219929f LD |
169 | gpio_set_value_cansleep(tps->vsel1_gpio, |
170 | (new_vset_id >> 1) & 0x1); | |
171 | } | |
172 | return 0; | |
173 | } | |
174 | ||
9a00630c LD |
175 | static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode) |
176 | { | |
177 | struct tps62360_chip *tps = rdev_get_drvdata(rdev); | |
178 | int i; | |
179 | int val; | |
180 | int ret; | |
181 | ||
182 | /* Enable force PWM mode in FAST mode only. */ | |
183 | switch (mode) { | |
184 | case REGULATOR_MODE_FAST: | |
185 | val = FORCE_PWM_ENABLE; | |
186 | break; | |
187 | ||
188 | case REGULATOR_MODE_NORMAL: | |
189 | val = 0; | |
190 | break; | |
191 | ||
192 | default: | |
193 | return -EINVAL; | |
194 | } | |
195 | ||
196 | if (!tps->valid_gpios) { | |
197 | ret = regmap_update_bits(tps->regmap, | |
198 | REG_VSET0 + tps->curr_vset_id, FORCE_PWM_ENABLE, val); | |
199 | if (ret < 0) | |
200 | dev_err(tps->dev, | |
201 | "%s(): register %d update failed with err %d\n", | |
202 | __func__, REG_VSET0 + tps->curr_vset_id, ret); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | /* If gpios are valid then all register set need to be control */ | |
207 | for (i = 0; i < 4; ++i) { | |
208 | ret = regmap_update_bits(tps->regmap, | |
209 | REG_VSET0 + i, FORCE_PWM_ENABLE, val); | |
210 | if (ret < 0) { | |
211 | dev_err(tps->dev, | |
212 | "%s(): register %d update failed with err %d\n", | |
213 | __func__, REG_VSET0 + i, ret); | |
214 | return ret; | |
215 | } | |
216 | } | |
217 | return ret; | |
218 | } | |
219 | ||
220 | static unsigned int tps62360_get_mode(struct regulator_dev *rdev) | |
221 | { | |
222 | struct tps62360_chip *tps = rdev_get_drvdata(rdev); | |
223 | unsigned int data; | |
224 | int ret; | |
225 | ||
226 | ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data); | |
227 | if (ret < 0) { | |
228 | dev_err(tps->dev, "%s(): register %d read failed with err %d\n", | |
229 | __func__, REG_VSET0 + tps->curr_vset_id, ret); | |
230 | return ret; | |
231 | } | |
232 | return (data & FORCE_PWM_ENABLE) ? | |
233 | REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; | |
234 | } | |
235 | ||
6219929f | 236 | static struct regulator_ops tps62360_dcdc_ops = { |
a60cfce0 | 237 | .get_voltage_sel = tps62360_dcdc_get_voltage_sel, |
41097afd | 238 | .set_voltage_sel = tps62360_dcdc_set_voltage_sel, |
7f225ba5 | 239 | .list_voltage = regulator_list_voltage_linear, |
41097afd | 240 | .map_voltage = regulator_map_voltage_linear, |
0072f0a8 | 241 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
9a00630c LD |
242 | .set_mode = tps62360_set_mode, |
243 | .get_mode = tps62360_get_mode, | |
6219929f LD |
244 | }; |
245 | ||
a5023574 | 246 | static int tps62360_init_dcdc(struct tps62360_chip *tps, |
6219929f LD |
247 | struct tps62360_regulator_platform_data *pdata) |
248 | { | |
249 | int ret; | |
a60cfce0 | 250 | unsigned int ramp_ctrl; |
6219929f | 251 | |
2935fb18 | 252 | /* Initialize internal pull up/down control */ |
6219929f LD |
253 | if (tps->en_internal_pulldn) |
254 | ret = regmap_write(tps->regmap, REG_CONTROL, 0xE0); | |
255 | else | |
256 | ret = regmap_write(tps->regmap, REG_CONTROL, 0x0); | |
257 | if (ret < 0) { | |
2935fb18 LD |
258 | dev_err(tps->dev, |
259 | "%s(): register %d write failed with err %d\n", | |
260 | __func__, REG_CONTROL, ret); | |
6219929f LD |
261 | return ret; |
262 | } | |
263 | ||
6219929f LD |
264 | /* Reset output discharge path to reduce power consumption */ |
265 | ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0); | |
a60cfce0 | 266 | if (ret < 0) { |
2935fb18 LD |
267 | dev_err(tps->dev, |
268 | "%s(): register %d update failed with err %d\n", | |
269 | __func__, REG_RAMPCTRL, ret); | |
a60cfce0 LD |
270 | return ret; |
271 | } | |
272 | ||
273 | /* Get ramp value from ramp control register */ | |
274 | ret = regmap_read(tps->regmap, REG_RAMPCTRL, &ramp_ctrl); | |
275 | if (ret < 0) { | |
2935fb18 LD |
276 | dev_err(tps->dev, |
277 | "%s(): register %d read failed with err %d\n", | |
278 | __func__, REG_RAMPCTRL, ret); | |
a60cfce0 LD |
279 | return ret; |
280 | } | |
1864b670 | 281 | ramp_ctrl = (ramp_ctrl >> 5) & 0x7; |
a60cfce0 LD |
282 | |
283 | /* ramp mV/us = 32/(2^ramp_ctrl) */ | |
0072f0a8 | 284 | tps->desc.ramp_delay = DIV_ROUND_UP(32000, BIT(ramp_ctrl)); |
6219929f LD |
285 | return ret; |
286 | } | |
287 | ||
288 | static const struct regmap_config tps62360_regmap_config = { | |
16ea003b LD |
289 | .reg_bits = 8, |
290 | .val_bits = 8, | |
291 | .max_register = REG_CHIPID, | |
292 | .cache_type = REGCACHE_RBTREE, | |
6219929f LD |
293 | }; |
294 | ||
684ae39b LD |
295 | static struct tps62360_regulator_platform_data * |
296 | of_get_tps62360_platform_data(struct device *dev) | |
297 | { | |
298 | struct tps62360_regulator_platform_data *pdata; | |
299 | struct device_node *np = dev->of_node; | |
300 | ||
301 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
302 | if (!pdata) { | |
303 | dev_err(dev, "Memory alloc failed for platform data\n"); | |
304 | return NULL; | |
305 | } | |
306 | ||
307 | pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node); | |
308 | if (!pdata->reg_init_data) { | |
309 | dev_err(dev, "Not able to get OF regulator init data\n"); | |
310 | return NULL; | |
311 | } | |
312 | ||
313 | pdata->vsel0_gpio = of_get_named_gpio(np, "vsel0-gpio", 0); | |
314 | pdata->vsel1_gpio = of_get_named_gpio(np, "vsel1-gpio", 0); | |
315 | ||
316 | if (of_find_property(np, "ti,vsel0-state-high", NULL)) | |
317 | pdata->vsel0_def_state = 1; | |
318 | ||
319 | if (of_find_property(np, "ti,vsel1-state-high", NULL)) | |
320 | pdata->vsel1_def_state = 1; | |
321 | ||
322 | if (of_find_property(np, "ti,enable-pull-down", NULL)) | |
323 | pdata->en_internal_pulldn = true; | |
324 | ||
684ae39b LD |
325 | if (of_find_property(np, "ti,enable-vout-discharge", NULL)) |
326 | pdata->en_discharge = true; | |
327 | ||
328 | return pdata; | |
329 | } | |
330 | ||
331 | #if defined(CONFIG_OF) | |
332 | static const struct of_device_id tps62360_of_match[] = { | |
333 | { .compatible = "ti,tps62360", .data = (void *)TPS62360}, | |
334 | { .compatible = "ti,tps62361", .data = (void *)TPS62361}, | |
335 | { .compatible = "ti,tps62362", .data = (void *)TPS62362}, | |
336 | { .compatible = "ti,tps62363", .data = (void *)TPS62363}, | |
337 | {}, | |
be15411d | 338 | }; |
684ae39b LD |
339 | MODULE_DEVICE_TABLE(of, tps62360_of_match); |
340 | #endif | |
341 | ||
a5023574 | 342 | static int tps62360_probe(struct i2c_client *client, |
6219929f LD |
343 | const struct i2c_device_id *id) |
344 | { | |
c172708d | 345 | struct regulator_config config = { }; |
6219929f LD |
346 | struct tps62360_regulator_platform_data *pdata; |
347 | struct regulator_dev *rdev; | |
348 | struct tps62360_chip *tps; | |
349 | int ret; | |
350 | int i; | |
684ae39b | 351 | int chip_id; |
6219929f | 352 | |
dff91d0b | 353 | pdata = dev_get_platdata(&client->dev); |
684ae39b LD |
354 | |
355 | if (client->dev.of_node) { | |
356 | const struct of_device_id *match; | |
357 | match = of_match_device(of_match_ptr(tps62360_of_match), | |
358 | &client->dev); | |
359 | if (!match) { | |
360 | dev_err(&client->dev, "Error: No device match found\n"); | |
361 | return -ENODEV; | |
362 | } | |
541f597f | 363 | chip_id = (int)(long)match->data; |
684ae39b LD |
364 | if (!pdata) |
365 | pdata = of_get_tps62360_platform_data(&client->dev); | |
0a62d03b TT |
366 | } else if (id) { |
367 | chip_id = id->driver_data; | |
368 | } else { | |
369 | dev_err(&client->dev, "No device tree match or id table match found\n"); | |
370 | return -ENODEV; | |
684ae39b LD |
371 | } |
372 | ||
6219929f | 373 | if (!pdata) { |
2935fb18 | 374 | dev_err(&client->dev, "%s(): Platform data not found\n", |
6219929f LD |
375 | __func__); |
376 | return -EIO; | |
377 | } | |
378 | ||
379 | tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); | |
380 | if (!tps) { | |
2935fb18 | 381 | dev_err(&client->dev, "%s(): Memory allocation failed\n", |
6219929f LD |
382 | __func__); |
383 | return -ENOMEM; | |
384 | } | |
385 | ||
6219929f LD |
386 | tps->en_discharge = pdata->en_discharge; |
387 | tps->en_internal_pulldn = pdata->en_internal_pulldn; | |
388 | tps->vsel0_gpio = pdata->vsel0_gpio; | |
389 | tps->vsel1_gpio = pdata->vsel1_gpio; | |
6219929f | 390 | tps->dev = &client->dev; |
d1cf4f65 | 391 | |
684ae39b | 392 | switch (chip_id) { |
d1cf4f65 AL |
393 | case TPS62360: |
394 | case TPS62362: | |
b5152415 | 395 | tps->desc.min_uV = TPS62360_BASE_VOLTAGE; |
d1cf4f65 AL |
396 | tps->voltage_reg_mask = 0x3F; |
397 | tps->desc.n_voltages = TPS62360_N_VOLTAGES; | |
398 | break; | |
399 | case TPS62361: | |
400 | case TPS62363: | |
b5152415 | 401 | tps->desc.min_uV = TPS62361_BASE_VOLTAGE; |
d1cf4f65 AL |
402 | tps->voltage_reg_mask = 0x7F; |
403 | tps->desc.n_voltages = TPS62361_N_VOLTAGES; | |
404 | break; | |
405 | default: | |
406 | return -ENODEV; | |
407 | } | |
6219929f | 408 | |
0a62d03b | 409 | tps->desc.name = client->name; |
6219929f | 410 | tps->desc.id = 0; |
6219929f LD |
411 | tps->desc.ops = &tps62360_dcdc_ops; |
412 | tps->desc.type = REGULATOR_VOLTAGE; | |
413 | tps->desc.owner = THIS_MODULE; | |
7f225ba5 AL |
414 | tps->desc.uV_step = 10000; |
415 | ||
9a4bdd87 | 416 | tps->regmap = devm_regmap_init_i2c(client, &tps62360_regmap_config); |
6219929f LD |
417 | if (IS_ERR(tps->regmap)) { |
418 | ret = PTR_ERR(tps->regmap); | |
2935fb18 LD |
419 | dev_err(&client->dev, |
420 | "%s(): regmap allocation failed with err %d\n", | |
421 | __func__, ret); | |
6219929f LD |
422 | return ret; |
423 | } | |
424 | i2c_set_clientdata(client, tps); | |
425 | ||
426 | tps->curr_vset_id = (pdata->vsel1_def_state & 1) * 2 + | |
427 | (pdata->vsel0_def_state & 1); | |
428 | tps->lru_index[0] = tps->curr_vset_id; | |
429 | tps->valid_gpios = false; | |
430 | ||
431 | if (gpio_is_valid(tps->vsel0_gpio) && gpio_is_valid(tps->vsel1_gpio)) { | |
2935fb18 LD |
432 | int gpio_flags; |
433 | gpio_flags = (pdata->vsel0_def_state) ? | |
434 | GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; | |
8a8e3d59 | 435 | ret = devm_gpio_request_one(&client->dev, tps->vsel0_gpio, |
2935fb18 | 436 | gpio_flags, "tps62360-vsel0"); |
6219929f LD |
437 | if (ret) { |
438 | dev_err(&client->dev, | |
2935fb18 LD |
439 | "%s(): Could not obtain vsel0 GPIO %d: %d\n", |
440 | __func__, tps->vsel0_gpio, ret); | |
8a8e3d59 | 441 | return ret; |
6219929f LD |
442 | } |
443 | ||
2935fb18 LD |
444 | gpio_flags = (pdata->vsel1_def_state) ? |
445 | GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; | |
8a8e3d59 | 446 | ret = devm_gpio_request_one(&client->dev, tps->vsel1_gpio, |
2935fb18 | 447 | gpio_flags, "tps62360-vsel1"); |
6219929f LD |
448 | if (ret) { |
449 | dev_err(&client->dev, | |
2935fb18 LD |
450 | "%s(): Could not obtain vsel1 GPIO %d: %d\n", |
451 | __func__, tps->vsel1_gpio, ret); | |
8a8e3d59 | 452 | return ret; |
6219929f LD |
453 | } |
454 | tps->valid_gpios = true; | |
455 | ||
456 | /* | |
457 | * Initialize the lru index with vset_reg id | |
458 | * The index 0 will be most recently used and | |
459 | * set with the tps->curr_vset_id */ | |
460 | for (i = 0; i < 4; ++i) | |
461 | tps->lru_index[i] = i; | |
462 | tps->lru_index[0] = tps->curr_vset_id; | |
463 | tps->lru_index[tps->curr_vset_id] = 0; | |
464 | } | |
465 | ||
466 | ret = tps62360_init_dcdc(tps, pdata); | |
467 | if (ret < 0) { | |
2935fb18 | 468 | dev_err(tps->dev, "%s(): Init failed with err = %d\n", |
6219929f | 469 | __func__, ret); |
8a8e3d59 | 470 | return ret; |
6219929f LD |
471 | } |
472 | ||
c172708d | 473 | config.dev = &client->dev; |
8bdca009 | 474 | config.init_data = pdata->reg_init_data; |
c172708d | 475 | config.driver_data = tps; |
9fc3815e | 476 | config.of_node = client->dev.of_node; |
c172708d | 477 | |
6219929f | 478 | /* Register the regulators */ |
58c6e938 | 479 | rdev = devm_regulator_register(&client->dev, &tps->desc, &config); |
6219929f | 480 | if (IS_ERR(rdev)) { |
2935fb18 LD |
481 | dev_err(tps->dev, |
482 | "%s(): regulator register failed with err %s\n", | |
483 | __func__, id->name); | |
8a8e3d59 | 484 | return PTR_ERR(rdev); |
6219929f LD |
485 | } |
486 | ||
487 | tps->rdev = rdev; | |
488 | return 0; | |
6219929f LD |
489 | } |
490 | ||
6219929f LD |
491 | static void tps62360_shutdown(struct i2c_client *client) |
492 | { | |
493 | struct tps62360_chip *tps = i2c_get_clientdata(client); | |
494 | int st; | |
495 | ||
496 | if (!tps->en_discharge) | |
497 | return; | |
498 | ||
499 | /* Configure the output discharge path */ | |
500 | st = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), BIT(2)); | |
501 | if (st < 0) | |
2935fb18 LD |
502 | dev_err(tps->dev, |
503 | "%s(): register %d update failed with err %d\n", | |
504 | __func__, REG_RAMPCTRL, st); | |
6219929f LD |
505 | } |
506 | ||
507 | static const struct i2c_device_id tps62360_id[] = { | |
508 | {.name = "tps62360", .driver_data = TPS62360}, | |
509 | {.name = "tps62361", .driver_data = TPS62361}, | |
d1cf4f65 AL |
510 | {.name = "tps62362", .driver_data = TPS62362}, |
511 | {.name = "tps62363", .driver_data = TPS62363}, | |
6219929f LD |
512 | {}, |
513 | }; | |
514 | ||
515 | MODULE_DEVICE_TABLE(i2c, tps62360_id); | |
516 | ||
517 | static struct i2c_driver tps62360_i2c_driver = { | |
518 | .driver = { | |
519 | .name = "tps62360", | |
520 | .owner = THIS_MODULE, | |
684ae39b | 521 | .of_match_table = of_match_ptr(tps62360_of_match), |
6219929f LD |
522 | }, |
523 | .probe = tps62360_probe, | |
6219929f LD |
524 | .shutdown = tps62360_shutdown, |
525 | .id_table = tps62360_id, | |
526 | }; | |
527 | ||
528 | static int __init tps62360_init(void) | |
529 | { | |
530 | return i2c_add_driver(&tps62360_i2c_driver); | |
531 | } | |
532 | subsys_initcall(tps62360_init); | |
533 | ||
534 | static void __exit tps62360_cleanup(void) | |
535 | { | |
536 | i2c_del_driver(&tps62360_i2c_driver); | |
537 | } | |
538 | module_exit(tps62360_cleanup); | |
539 | ||
540 | MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); | |
d1cf4f65 | 541 | MODULE_DESCRIPTION("TPS6236x voltage regulator driver"); |
6219929f | 542 | MODULE_LICENSE("GPL v2"); |