Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b59320cc DJ |
2 | /* |
3 | * LP8755 High Performance Power Management Unit : System Interface Driver | |
4 | * (based on rev. 0.26) | |
5 | * Copyright 2012 Texas Instruments | |
6 | * | |
7 | * Author: Daniel(Geon Si) Jeong <daniel.jeong@ti.com> | |
b59320cc DJ |
8 | */ |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/i2c.h> | |
13 | #include <linux/err.h> | |
14 | #include <linux/irq.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/gpio.h> | |
17 | #include <linux/regmap.h> | |
b59320cc DJ |
18 | #include <linux/uaccess.h> |
19 | #include <linux/regulator/driver.h> | |
20 | #include <linux/regulator/machine.h> | |
21 | #include <linux/platform_data/lp8755.h> | |
22 | ||
23 | #define LP8755_REG_BUCK0 0x00 | |
24 | #define LP8755_REG_BUCK1 0x03 | |
25 | #define LP8755_REG_BUCK2 0x04 | |
26 | #define LP8755_REG_BUCK3 0x01 | |
27 | #define LP8755_REG_BUCK4 0x05 | |
28 | #define LP8755_REG_BUCK5 0x02 | |
29 | #define LP8755_REG_MAX 0xFF | |
30 | ||
31 | #define LP8755_BUCK_EN_M BIT(7) | |
32 | #define LP8755_BUCK_LINEAR_OUT_MAX 0x76 | |
33 | #define LP8755_BUCK_VOUT_M 0x7F | |
34 | ||
b59320cc DJ |
35 | struct lp8755_mphase { |
36 | int nreg; | |
37 | int buck_num[LP8755_BUCK_MAX]; | |
38 | }; | |
39 | ||
40 | struct lp8755_chip { | |
41 | struct device *dev; | |
42 | struct regmap *regmap; | |
43 | struct lp8755_platform_data *pdata; | |
44 | ||
45 | int irq; | |
46 | unsigned int irqmask; | |
47 | ||
48 | int mphase; | |
49 | struct regulator_dev *rdev[LP8755_BUCK_MAX]; | |
50 | }; | |
51 | ||
b59320cc DJ |
52 | static int lp8755_buck_enable_time(struct regulator_dev *rdev) |
53 | { | |
54 | int ret; | |
55 | unsigned int regval; | |
56 | enum lp8755_bucks id = rdev_get_id(rdev); | |
b59320cc | 57 | |
4cf12735 | 58 | ret = regmap_read(rdev->regmap, 0x12 + id, ®val); |
b59320cc | 59 | if (ret < 0) { |
4cf12735 | 60 | dev_err(&rdev->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
61 | return ret; |
62 | } | |
63 | return (regval & 0xff) * 100; | |
64 | } | |
65 | ||
66 | static int lp8755_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
67 | { | |
68 | int ret; | |
69 | unsigned int regbval = 0x0; | |
70 | enum lp8755_bucks id = rdev_get_id(rdev); | |
71 | struct lp8755_chip *pchip = rdev_get_drvdata(rdev); | |
72 | ||
73 | switch (mode) { | |
74 | case REGULATOR_MODE_FAST: | |
75 | /* forced pwm mode */ | |
76 | regbval = (0x01 << id); | |
77 | break; | |
78 | case REGULATOR_MODE_NORMAL: | |
79 | /* enable automatic pwm/pfm mode */ | |
4cf12735 | 80 | ret = regmap_update_bits(rdev->regmap, 0x08 + id, 0x20, 0x00); |
b59320cc DJ |
81 | if (ret < 0) |
82 | goto err_i2c; | |
83 | break; | |
84 | case REGULATOR_MODE_IDLE: | |
85 | /* enable automatic pwm/pfm/lppfm mode */ | |
4cf12735 | 86 | ret = regmap_update_bits(rdev->regmap, 0x08 + id, 0x20, 0x20); |
b59320cc DJ |
87 | if (ret < 0) |
88 | goto err_i2c; | |
89 | ||
4cf12735 | 90 | ret = regmap_update_bits(rdev->regmap, 0x10, 0x01, 0x01); |
b59320cc DJ |
91 | if (ret < 0) |
92 | goto err_i2c; | |
93 | break; | |
94 | default: | |
95 | dev_err(pchip->dev, "Not supported buck mode %s\n", __func__); | |
96 | /* forced pwm mode */ | |
97 | regbval = (0x01 << id); | |
98 | } | |
99 | ||
4cf12735 | 100 | ret = regmap_update_bits(rdev->regmap, 0x06, 0x01 << id, regbval); |
b59320cc DJ |
101 | if (ret < 0) |
102 | goto err_i2c; | |
103 | return ret; | |
104 | err_i2c: | |
4cf12735 | 105 | dev_err(&rdev->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
106 | return ret; |
107 | } | |
108 | ||
109 | static unsigned int lp8755_buck_get_mode(struct regulator_dev *rdev) | |
110 | { | |
111 | int ret; | |
112 | unsigned int regval; | |
113 | enum lp8755_bucks id = rdev_get_id(rdev); | |
b59320cc | 114 | |
4cf12735 | 115 | ret = regmap_read(rdev->regmap, 0x06, ®val); |
b59320cc DJ |
116 | if (ret < 0) |
117 | goto err_i2c; | |
118 | ||
119 | /* mode fast means forced pwm mode */ | |
120 | if (regval & (0x01 << id)) | |
121 | return REGULATOR_MODE_FAST; | |
122 | ||
4cf12735 | 123 | ret = regmap_read(rdev->regmap, 0x08 + id, ®val); |
b59320cc DJ |
124 | if (ret < 0) |
125 | goto err_i2c; | |
126 | ||
127 | /* mode idle means automatic pwm/pfm/lppfm mode */ | |
128 | if (regval & 0x20) | |
129 | return REGULATOR_MODE_IDLE; | |
130 | ||
131 | /* mode normal means automatic pwm/pfm mode */ | |
132 | return REGULATOR_MODE_NORMAL; | |
133 | ||
134 | err_i2c: | |
4cf12735 | 135 | dev_err(&rdev->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
136 | return 0; |
137 | } | |
138 | ||
139 | static int lp8755_buck_set_ramp(struct regulator_dev *rdev, int ramp) | |
140 | { | |
141 | int ret; | |
142 | unsigned int regval = 0x00; | |
143 | enum lp8755_bucks id = rdev_get_id(rdev); | |
b59320cc DJ |
144 | |
145 | /* uV/us */ | |
146 | switch (ramp) { | |
147 | case 0 ... 230: | |
148 | regval = 0x07; | |
149 | break; | |
150 | case 231 ... 470: | |
151 | regval = 0x06; | |
152 | break; | |
153 | case 471 ... 940: | |
154 | regval = 0x05; | |
155 | break; | |
156 | case 941 ... 1900: | |
157 | regval = 0x04; | |
158 | break; | |
159 | case 1901 ... 3800: | |
160 | regval = 0x03; | |
161 | break; | |
162 | case 3801 ... 7500: | |
163 | regval = 0x02; | |
164 | break; | |
165 | case 7501 ... 15000: | |
166 | regval = 0x01; | |
167 | break; | |
168 | case 15001 ... 30000: | |
169 | regval = 0x00; | |
170 | break; | |
171 | default: | |
4cf12735 | 172 | dev_err(&rdev->dev, |
b59320cc DJ |
173 | "Not supported ramp value %d %s\n", ramp, __func__); |
174 | return -EINVAL; | |
175 | } | |
176 | ||
4cf12735 | 177 | ret = regmap_update_bits(rdev->regmap, 0x07 + id, 0x07, regval); |
b59320cc DJ |
178 | if (ret < 0) |
179 | goto err_i2c; | |
180 | return ret; | |
181 | err_i2c: | |
4cf12735 | 182 | dev_err(&rdev->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
183 | return ret; |
184 | } | |
185 | ||
d42797a4 | 186 | static const struct regulator_ops lp8755_buck_ops = { |
56a942e9 | 187 | .map_voltage = regulator_map_voltage_linear, |
b59320cc DJ |
188 | .list_voltage = regulator_list_voltage_linear, |
189 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
190 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
191 | .enable = regulator_enable_regmap, | |
192 | .disable = regulator_disable_regmap, | |
193 | .is_enabled = regulator_is_enabled_regmap, | |
194 | .enable_time = lp8755_buck_enable_time, | |
195 | .set_mode = lp8755_buck_set_mode, | |
196 | .get_mode = lp8755_buck_get_mode, | |
197 | .set_ramp_delay = lp8755_buck_set_ramp, | |
198 | }; | |
199 | ||
200 | #define lp8755_rail(_id) "lp8755_buck"#_id | |
201 | #define lp8755_buck_init(_id)\ | |
202 | {\ | |
203 | .constraints = {\ | |
204 | .name = lp8755_rail(_id),\ | |
205 | .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,\ | |
206 | .min_uV = 500000,\ | |
207 | .max_uV = 1675000,\ | |
208 | },\ | |
209 | } | |
210 | ||
211 | static struct regulator_init_data lp8755_reg_default[LP8755_BUCK_MAX] = { | |
510799ea AL |
212 | [LP8755_BUCK0] = lp8755_buck_init(0), |
213 | [LP8755_BUCK1] = lp8755_buck_init(1), | |
214 | [LP8755_BUCK2] = lp8755_buck_init(2), | |
215 | [LP8755_BUCK3] = lp8755_buck_init(3), | |
216 | [LP8755_BUCK4] = lp8755_buck_init(4), | |
217 | [LP8755_BUCK5] = lp8755_buck_init(5), | |
b59320cc DJ |
218 | }; |
219 | ||
220 | static const struct lp8755_mphase mphase_buck[MPHASE_CONF_MAX] = { | |
510799ea AL |
221 | { 3, { LP8755_BUCK0, LP8755_BUCK3, LP8755_BUCK5 } }, |
222 | { 6, { LP8755_BUCK0, LP8755_BUCK1, LP8755_BUCK2, LP8755_BUCK3, | |
223 | LP8755_BUCK4, LP8755_BUCK5 } }, | |
224 | { 5, { LP8755_BUCK0, LP8755_BUCK2, LP8755_BUCK3, LP8755_BUCK4, | |
225 | LP8755_BUCK5} }, | |
226 | { 4, { LP8755_BUCK0, LP8755_BUCK3, LP8755_BUCK4, LP8755_BUCK5} }, | |
227 | { 3, { LP8755_BUCK0, LP8755_BUCK4, LP8755_BUCK5} }, | |
228 | { 2, { LP8755_BUCK0, LP8755_BUCK5} }, | |
229 | { 1, { LP8755_BUCK0} }, | |
230 | { 2, { LP8755_BUCK0, LP8755_BUCK3} }, | |
231 | { 4, { LP8755_BUCK0, LP8755_BUCK2, LP8755_BUCK3, LP8755_BUCK5} }, | |
b59320cc DJ |
232 | }; |
233 | ||
234 | static int lp8755_init_data(struct lp8755_chip *pchip) | |
235 | { | |
236 | unsigned int regval; | |
237 | int ret, icnt, buck_num; | |
238 | struct lp8755_platform_data *pdata = pchip->pdata; | |
239 | ||
240 | /* read back muti-phase configuration */ | |
4cf12735 | 241 | ret = regmap_read(pchip->regmap, 0x3D, ®val); |
b59320cc DJ |
242 | if (ret < 0) |
243 | goto out_i2c_error; | |
cad877ef | 244 | pchip->mphase = regval & 0x0F; |
b59320cc DJ |
245 | |
246 | /* set default data based on multi-phase config */ | |
247 | for (icnt = 0; icnt < mphase_buck[pchip->mphase].nreg; icnt++) { | |
248 | buck_num = mphase_buck[pchip->mphase].buck_num[icnt]; | |
249 | pdata->buck_data[buck_num] = &lp8755_reg_default[buck_num]; | |
250 | } | |
251 | return ret; | |
252 | ||
253 | out_i2c_error: | |
80aec6f5 | 254 | dev_err(pchip->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
255 | return ret; |
256 | } | |
257 | ||
258 | #define lp8755_buck_desc(_id)\ | |
259 | {\ | |
260 | .name = lp8755_rail(_id),\ | |
261 | .id = LP8755_BUCK##_id,\ | |
262 | .ops = &lp8755_buck_ops,\ | |
263 | .n_voltages = LP8755_BUCK_LINEAR_OUT_MAX+1,\ | |
264 | .uV_step = 10000,\ | |
265 | .min_uV = 500000,\ | |
266 | .type = REGULATOR_VOLTAGE,\ | |
267 | .owner = THIS_MODULE,\ | |
268 | .enable_reg = LP8755_REG_BUCK##_id,\ | |
269 | .enable_mask = LP8755_BUCK_EN_M,\ | |
270 | .vsel_reg = LP8755_REG_BUCK##_id,\ | |
271 | .vsel_mask = LP8755_BUCK_VOUT_M,\ | |
272 | } | |
273 | ||
367e90d1 | 274 | static const struct regulator_desc lp8755_regulators[] = { |
b59320cc DJ |
275 | lp8755_buck_desc(0), |
276 | lp8755_buck_desc(1), | |
277 | lp8755_buck_desc(2), | |
278 | lp8755_buck_desc(3), | |
279 | lp8755_buck_desc(4), | |
280 | lp8755_buck_desc(5), | |
281 | }; | |
282 | ||
283 | static int lp8755_regulator_init(struct lp8755_chip *pchip) | |
284 | { | |
285 | int ret, icnt, buck_num; | |
286 | struct lp8755_platform_data *pdata = pchip->pdata; | |
287 | struct regulator_config rconfig = { }; | |
288 | ||
289 | rconfig.regmap = pchip->regmap; | |
290 | rconfig.dev = pchip->dev; | |
291 | rconfig.driver_data = pchip; | |
292 | ||
293 | for (icnt = 0; icnt < mphase_buck[pchip->mphase].nreg; icnt++) { | |
294 | buck_num = mphase_buck[pchip->mphase].buck_num[icnt]; | |
295 | rconfig.init_data = pdata->buck_data[buck_num]; | |
296 | rconfig.of_node = pchip->dev->of_node; | |
297 | pchip->rdev[buck_num] = | |
57135250 HS |
298 | devm_regulator_register(pchip->dev, |
299 | &lp8755_regulators[buck_num], &rconfig); | |
b59320cc DJ |
300 | if (IS_ERR(pchip->rdev[buck_num])) { |
301 | ret = PTR_ERR(pchip->rdev[buck_num]); | |
a1a41ab4 AL |
302 | pchip->rdev[buck_num] = NULL; |
303 | dev_err(pchip->dev, "regulator init failed: buck %d\n", | |
304 | buck_num); | |
57135250 | 305 | return ret; |
b59320cc DJ |
306 | } |
307 | } | |
308 | ||
309 | return 0; | |
b59320cc DJ |
310 | } |
311 | ||
312 | static irqreturn_t lp8755_irq_handler(int irq, void *data) | |
313 | { | |
314 | int ret, icnt; | |
315 | unsigned int flag0, flag1; | |
316 | struct lp8755_chip *pchip = data; | |
317 | ||
318 | /* read flag0 register */ | |
4cf12735 | 319 | ret = regmap_read(pchip->regmap, 0x0D, &flag0); |
b59320cc DJ |
320 | if (ret < 0) |
321 | goto err_i2c; | |
322 | /* clear flag register to pull up int. pin */ | |
4cf12735 | 323 | ret = regmap_write(pchip->regmap, 0x0D, 0x00); |
b59320cc DJ |
324 | if (ret < 0) |
325 | goto err_i2c; | |
326 | ||
327 | /* sent power fault detection event to specific regulator */ | |
1200c60b | 328 | for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) |
b59320cc DJ |
329 | if ((flag0 & (0x4 << icnt)) |
330 | && (pchip->irqmask & (0x04 << icnt)) | |
89b2758c | 331 | && (pchip->rdev[icnt] != NULL)) { |
b59320cc DJ |
332 | regulator_notifier_call_chain(pchip->rdev[icnt], |
333 | LP8755_EVENT_PWR_FAULT, | |
334 | NULL); | |
89b2758c | 335 | } |
b59320cc DJ |
336 | |
337 | /* read flag1 register */ | |
4cf12735 | 338 | ret = regmap_read(pchip->regmap, 0x0E, &flag1); |
b59320cc DJ |
339 | if (ret < 0) |
340 | goto err_i2c; | |
341 | /* clear flag register to pull up int. pin */ | |
4cf12735 | 342 | ret = regmap_write(pchip->regmap, 0x0E, 0x00); |
b59320cc DJ |
343 | if (ret < 0) |
344 | goto err_i2c; | |
345 | ||
48f1b4ef | 346 | /* send OCP event to all regulator devices */ |
b59320cc DJ |
347 | if ((flag1 & 0x01) && (pchip->irqmask & 0x01)) |
348 | for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) | |
89b2758c | 349 | if (pchip->rdev[icnt] != NULL) { |
b59320cc DJ |
350 | regulator_notifier_call_chain(pchip->rdev[icnt], |
351 | LP8755_EVENT_OCP, | |
352 | NULL); | |
89b2758c | 353 | } |
b59320cc | 354 | |
48f1b4ef | 355 | /* send OVP event to all regulator devices */ |
b59320cc DJ |
356 | if ((flag1 & 0x02) && (pchip->irqmask & 0x02)) |
357 | for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) | |
89b2758c | 358 | if (pchip->rdev[icnt] != NULL) { |
b59320cc DJ |
359 | regulator_notifier_call_chain(pchip->rdev[icnt], |
360 | LP8755_EVENT_OVP, | |
361 | NULL); | |
89b2758c | 362 | } |
b59320cc DJ |
363 | return IRQ_HANDLED; |
364 | ||
365 | err_i2c: | |
80aec6f5 | 366 | dev_err(pchip->dev, "i2c access error %s\n", __func__); |
b59320cc DJ |
367 | return IRQ_NONE; |
368 | } | |
369 | ||
370 | static int lp8755_int_config(struct lp8755_chip *pchip) | |
371 | { | |
372 | int ret; | |
373 | unsigned int regval; | |
374 | ||
375 | if (pchip->irq == 0) { | |
376 | dev_warn(pchip->dev, "not use interrupt : %s\n", __func__); | |
377 | return 0; | |
378 | } | |
379 | ||
4cf12735 | 380 | ret = regmap_read(pchip->regmap, 0x0F, ®val); |
840499aa | 381 | if (ret < 0) { |
80aec6f5 | 382 | dev_err(pchip->dev, "i2c access error %s\n", __func__); |
b59320cc | 383 | return ret; |
840499aa | 384 | } |
b59320cc | 385 | |
840499aa AL |
386 | pchip->irqmask = regval; |
387 | return devm_request_threaded_irq(pchip->dev, pchip->irq, NULL, | |
388 | lp8755_irq_handler, | |
389 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, | |
390 | "lp8755-irq", pchip); | |
b59320cc DJ |
391 | } |
392 | ||
393 | static const struct regmap_config lp8755_regmap = { | |
394 | .reg_bits = 8, | |
395 | .val_bits = 8, | |
396 | .max_register = LP8755_REG_MAX, | |
397 | }; | |
398 | ||
399 | static int lp8755_probe(struct i2c_client *client, | |
400 | const struct i2c_device_id *id) | |
401 | { | |
402 | int ret, icnt; | |
403 | struct lp8755_chip *pchip; | |
dff91d0b | 404 | struct lp8755_platform_data *pdata = dev_get_platdata(&client->dev); |
b59320cc DJ |
405 | |
406 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
407 | dev_err(&client->dev, "i2c functionality check fail.\n"); | |
408 | return -EOPNOTSUPP; | |
409 | } | |
410 | ||
411 | pchip = devm_kzalloc(&client->dev, | |
412 | sizeof(struct lp8755_chip), GFP_KERNEL); | |
413 | if (!pchip) | |
414 | return -ENOMEM; | |
415 | ||
416 | pchip->dev = &client->dev; | |
417 | pchip->regmap = devm_regmap_init_i2c(client, &lp8755_regmap); | |
418 | if (IS_ERR(pchip->regmap)) { | |
419 | ret = PTR_ERR(pchip->regmap); | |
420 | dev_err(&client->dev, "fail to allocate regmap %d\n", ret); | |
421 | return ret; | |
422 | } | |
423 | i2c_set_clientdata(client, pchip); | |
424 | ||
425 | if (pdata != NULL) { | |
426 | pchip->pdata = pdata; | |
427 | pchip->mphase = pdata->mphase; | |
428 | } else { | |
429 | pchip->pdata = devm_kzalloc(pchip->dev, | |
430 | sizeof(struct lp8755_platform_data), | |
431 | GFP_KERNEL); | |
432 | if (!pchip->pdata) | |
433 | return -ENOMEM; | |
434 | ret = lp8755_init_data(pchip); | |
240a5291 AL |
435 | if (ret < 0) { |
436 | dev_err(&client->dev, "fail to initialize chip\n"); | |
437 | return ret; | |
438 | } | |
b59320cc DJ |
439 | } |
440 | ||
441 | ret = lp8755_regulator_init(pchip); | |
240a5291 AL |
442 | if (ret < 0) { |
443 | dev_err(&client->dev, "fail to initialize regulators\n"); | |
57135250 | 444 | goto err; |
240a5291 | 445 | } |
b59320cc DJ |
446 | |
447 | pchip->irq = client->irq; | |
448 | ret = lp8755_int_config(pchip); | |
240a5291 AL |
449 | if (ret < 0) { |
450 | dev_err(&client->dev, "fail to irq config\n"); | |
57135250 | 451 | goto err; |
240a5291 | 452 | } |
b59320cc DJ |
453 | |
454 | return ret; | |
455 | ||
57135250 | 456 | err: |
b59320cc | 457 | /* output disable */ |
1200c60b | 458 | for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) |
4cf12735 | 459 | regmap_write(pchip->regmap, icnt, 0x00); |
b59320cc | 460 | |
b59320cc DJ |
461 | return ret; |
462 | } | |
463 | ||
464 | static int lp8755_remove(struct i2c_client *client) | |
465 | { | |
466 | int icnt; | |
467 | struct lp8755_chip *pchip = i2c_get_clientdata(client); | |
468 | ||
1200c60b | 469 | for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) |
4cf12735 | 470 | regmap_write(pchip->regmap, icnt, 0x00); |
b59320cc | 471 | |
b59320cc DJ |
472 | return 0; |
473 | } | |
474 | ||
475 | static const struct i2c_device_id lp8755_id[] = { | |
476 | {LP8755_NAME, 0}, | |
477 | {} | |
478 | }; | |
479 | ||
480 | MODULE_DEVICE_TABLE(i2c, lp8755_id); | |
481 | ||
482 | static struct i2c_driver lp8755_i2c_driver = { | |
483 | .driver = { | |
484 | .name = LP8755_NAME, | |
485 | }, | |
486 | .probe = lp8755_probe, | |
a1a41ab4 | 487 | .remove = lp8755_remove, |
b59320cc DJ |
488 | .id_table = lp8755_id, |
489 | }; | |
490 | ||
491 | static int __init lp8755_init(void) | |
492 | { | |
493 | return i2c_add_driver(&lp8755_i2c_driver); | |
494 | } | |
495 | ||
496 | subsys_initcall(lp8755_init); | |
497 | ||
498 | static void __exit lp8755_exit(void) | |
499 | { | |
500 | i2c_del_driver(&lp8755_i2c_driver); | |
501 | } | |
502 | ||
503 | module_exit(lp8755_exit); | |
504 | ||
505 | MODULE_DESCRIPTION("Texas Instruments lp8755 driver"); | |
506 | MODULE_AUTHOR("Daniel Jeong <daniel.jeong@ti.com>"); | |
507 | MODULE_LICENSE("GPL v2"); |