1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * TI LP8788 MFD - buck regulator driver |
4 | * |
5 | * Copyright 2012 Texas Instruments |
6 | * |
7 | * Author: Milo(Woogyom) Kim <milo.kim@ti.com> |
8 | */ |
9 | |
10 | #include <linux/module.h> |
11 | #include <linux/slab.h> |
12 | #include <linux/err.h> |
13 | #include <linux/platform_device.h> |
14 | #include <linux/regulator/driver.h> |
15 | #include <linux/mfd/lp8788.h> |
16 | #include <linux/gpio.h> |
17 | |
18 | /* register address */ |
19 | #define LP8788_EN_BUCK 0x0C |
20 | #define LP8788_BUCK_DVS_SEL 0x1D |
21 | #define LP8788_BUCK1_VOUT0 0x1E |
22 | #define LP8788_BUCK1_VOUT1 0x1F |
23 | #define LP8788_BUCK1_VOUT2 0x20 |
24 | #define LP8788_BUCK1_VOUT3 0x21 |
25 | #define LP8788_BUCK2_VOUT0 0x22 |
26 | #define LP8788_BUCK2_VOUT1 0x23 |
27 | #define LP8788_BUCK2_VOUT2 0x24 |
28 | #define LP8788_BUCK2_VOUT3 0x25 |
29 | #define LP8788_BUCK3_VOUT 0x26 |
30 | #define LP8788_BUCK4_VOUT 0x27 |
31 | #define LP8788_BUCK1_TIMESTEP 0x28 |
32 | #define LP8788_BUCK_PWM 0x2D |
33 | |
34 | /* mask/shift bits */ |
35 | #define LP8788_EN_BUCK1_M BIT(0) /* Addr 0Ch */ |
36 | #define LP8788_EN_BUCK2_M BIT(1) |
37 | #define LP8788_EN_BUCK3_M BIT(2) |
38 | #define LP8788_EN_BUCK4_M BIT(3) |
39 | #define LP8788_BUCK1_DVS_SEL_M 0x04 /* Addr 1Dh */ |
40 | #define LP8788_BUCK1_DVS_M 0x03 |
41 | #define LP8788_BUCK1_DVS_S 0 |
42 | #define LP8788_BUCK2_DVS_SEL_M 0x40 |
43 | #define LP8788_BUCK2_DVS_M 0x30 |
44 | #define LP8788_BUCK2_DVS_S 4 |
45 | #define LP8788_BUCK1_DVS_I2C BIT(2) |
46 | #define LP8788_BUCK2_DVS_I2C BIT(6) |
47 | #define LP8788_BUCK1_DVS_PIN (0 << 2) |
48 | #define LP8788_BUCK2_DVS_PIN (0 << 6) |
49 | #define LP8788_VOUT_M 0x1F /* Addr 1Eh ~ 27h */ |
50 | #define LP8788_STARTUP_TIME_M 0xF8 /* Addr 28h ~ 2Bh */ |
51 | #define LP8788_STARTUP_TIME_S 3 |
52 | #define LP8788_FPWM_BUCK1_M BIT(0) /* Addr 2Dh */ |
53 | #define LP8788_FPWM_BUCK1_S 0 |
54 | #define LP8788_FPWM_BUCK2_M BIT(1) |
55 | #define LP8788_FPWM_BUCK2_S 1 |
56 | #define LP8788_FPWM_BUCK3_M BIT(2) |
57 | #define LP8788_FPWM_BUCK3_S 2 |
58 | #define LP8788_FPWM_BUCK4_M BIT(3) |
59 | #define LP8788_FPWM_BUCK4_S 3 |
60 | |
61 | #define INVALID_ADDR 0xFF |
62 | #define LP8788_FORCE_PWM 1 |
63 | #define LP8788_AUTO_PWM 0 |
64 | #define PIN_LOW 0 |
65 | #define PIN_HIGH 1 |
66 | #define ENABLE_TIME_USEC 32 |
67 | |
68 | #define BUCK_FPWM_MASK(x) (1 << (x)) |
69 | #define BUCK_FPWM_SHIFT(x) (x) |
70 | |
71 | enum lp8788_dvs_state { |
72 | DVS_LOW = GPIOF_OUT_INIT_LOW, |
73 | DVS_HIGH = GPIOF_OUT_INIT_HIGH, |
74 | }; |
75 | |
76 | enum lp8788_dvs_mode { |
77 | REGISTER, |
78 | EXTPIN, |
79 | }; |
80 | |
81 | enum lp8788_buck_id { |
82 | BUCK1, |
83 | BUCK2, |
84 | BUCK3, |
85 | BUCK4, |
86 | }; |
87 | |
88 | struct lp8788_buck { |
89 | struct lp8788 *lp; |
90 | struct regulator_dev *regulator; |
91 | void *dvs; |
92 | }; |
93 | |
94 | /* BUCK 1 ~ 4 voltage ranges */ |
95 | static const struct linear_range buck_volt_ranges[] = { |
96 | REGULATOR_LINEAR_RANGE(500000, 0, 0, 0), |
97 | REGULATOR_LINEAR_RANGE(800000, 1, 25, 50000), |
98 | }; |
99 | |
100 | static void lp8788_buck1_set_dvs(struct lp8788_buck *buck) |
101 | { |
102 | struct lp8788_buck1_dvs *dvs = (struct lp8788_buck1_dvs *)buck->dvs; |
103 | enum lp8788_dvs_state pinstate; |
104 | |
105 | if (!dvs) |
106 | return; |
107 | |
108 | pinstate = dvs->vsel == DVS_SEL_V0 ? DVS_LOW : DVS_HIGH; |
109 | if (gpio_is_valid(number: dvs->gpio)) |
110 | gpio_set_value(gpio: dvs->gpio, value: pinstate); |
111 | } |
112 | |
113 | static void lp8788_buck2_set_dvs(struct lp8788_buck *buck) |
114 | { |
115 | struct lp8788_buck2_dvs *dvs = (struct lp8788_buck2_dvs *)buck->dvs; |
116 | enum lp8788_dvs_state pin1, pin2; |
117 | |
118 | if (!dvs) |
119 | return; |
120 | |
121 | switch (dvs->vsel) { |
122 | case DVS_SEL_V0: |
123 | pin1 = DVS_LOW; |
124 | pin2 = DVS_LOW; |
125 | break; |
126 | case DVS_SEL_V1: |
127 | pin1 = DVS_HIGH; |
128 | pin2 = DVS_LOW; |
129 | break; |
130 | case DVS_SEL_V2: |
131 | pin1 = DVS_LOW; |
132 | pin2 = DVS_HIGH; |
133 | break; |
134 | case DVS_SEL_V3: |
135 | pin1 = DVS_HIGH; |
136 | pin2 = DVS_HIGH; |
137 | break; |
138 | default: |
139 | return; |
140 | } |
141 | |
142 | if (gpio_is_valid(number: dvs->gpio[0])) |
143 | gpio_set_value(gpio: dvs->gpio[0], value: pin1); |
144 | |
145 | if (gpio_is_valid(number: dvs->gpio[1])) |
146 | gpio_set_value(gpio: dvs->gpio[1], value: pin2); |
147 | } |
148 | |
149 | static void lp8788_set_dvs(struct lp8788_buck *buck, enum lp8788_buck_id id) |
150 | { |
151 | switch (id) { |
152 | case BUCK1: |
153 | lp8788_buck1_set_dvs(buck); |
154 | break; |
155 | case BUCK2: |
156 | lp8788_buck2_set_dvs(buck); |
157 | break; |
158 | default: |
159 | break; |
160 | } |
161 | } |
162 | |
163 | static enum lp8788_dvs_mode |
164 | lp8788_get_buck_dvs_ctrl_mode(struct lp8788_buck *buck, enum lp8788_buck_id id) |
165 | { |
166 | u8 val, mask; |
167 | |
168 | switch (id) { |
169 | case BUCK1: |
170 | mask = LP8788_BUCK1_DVS_SEL_M; |
171 | break; |
172 | case BUCK2: |
173 | mask = LP8788_BUCK2_DVS_SEL_M; |
174 | break; |
175 | default: |
176 | return REGISTER; |
177 | } |
178 | |
179 | lp8788_read_byte(lp: buck->lp, LP8788_BUCK_DVS_SEL, data: &val); |
180 | |
181 | return val & mask ? REGISTER : EXTPIN; |
182 | } |
183 | |
184 | static bool lp8788_is_valid_buck_addr(u8 addr) |
185 | { |
186 | switch (addr) { |
187 | case LP8788_BUCK1_VOUT0: |
188 | case LP8788_BUCK1_VOUT1: |
189 | case LP8788_BUCK1_VOUT2: |
190 | case LP8788_BUCK1_VOUT3: |
191 | case LP8788_BUCK2_VOUT0: |
192 | case LP8788_BUCK2_VOUT1: |
193 | case LP8788_BUCK2_VOUT2: |
194 | case LP8788_BUCK2_VOUT3: |
195 | return true; |
196 | default: |
197 | return false; |
198 | } |
199 | } |
200 | |
201 | static u8 lp8788_select_buck_vout_addr(struct lp8788_buck *buck, |
202 | enum lp8788_buck_id id) |
203 | { |
204 | enum lp8788_dvs_mode mode = lp8788_get_buck_dvs_ctrl_mode(buck, id); |
205 | struct lp8788_buck1_dvs *b1_dvs; |
206 | struct lp8788_buck2_dvs *b2_dvs; |
207 | u8 val, idx, addr; |
208 | int pin1, pin2; |
209 | |
210 | switch (id) { |
211 | case BUCK1: |
212 | if (mode == EXTPIN) { |
213 | b1_dvs = (struct lp8788_buck1_dvs *)buck->dvs; |
214 | if (!b1_dvs) |
215 | goto err; |
216 | |
217 | idx = gpio_get_value(gpio: b1_dvs->gpio) ? 1 : 0; |
218 | } else { |
219 | lp8788_read_byte(lp: buck->lp, LP8788_BUCK_DVS_SEL, data: &val); |
220 | idx = (val & LP8788_BUCK1_DVS_M) >> LP8788_BUCK1_DVS_S; |
221 | } |
222 | addr = LP8788_BUCK1_VOUT0 + idx; |
223 | break; |
224 | case BUCK2: |
225 | if (mode == EXTPIN) { |
226 | b2_dvs = (struct lp8788_buck2_dvs *)buck->dvs; |
227 | if (!b2_dvs) |
228 | goto err; |
229 | |
230 | pin1 = gpio_get_value(gpio: b2_dvs->gpio[0]); |
231 | pin2 = gpio_get_value(gpio: b2_dvs->gpio[1]); |
232 | |
233 | if (pin1 == PIN_LOW && pin2 == PIN_LOW) |
234 | idx = 0; |
235 | else if (pin1 == PIN_LOW && pin2 == PIN_HIGH) |
236 | idx = 2; |
237 | else if (pin1 == PIN_HIGH && pin2 == PIN_LOW) |
238 | idx = 1; |
239 | else |
240 | idx = 3; |
241 | } else { |
242 | lp8788_read_byte(lp: buck->lp, LP8788_BUCK_DVS_SEL, data: &val); |
243 | idx = (val & LP8788_BUCK2_DVS_M) >> LP8788_BUCK2_DVS_S; |
244 | } |
245 | addr = LP8788_BUCK2_VOUT0 + idx; |
246 | break; |
247 | default: |
248 | goto err; |
249 | } |
250 | |
251 | return addr; |
252 | err: |
253 | return INVALID_ADDR; |
254 | } |
255 | |
256 | static int lp8788_buck12_set_voltage_sel(struct regulator_dev *rdev, |
257 | unsigned selector) |
258 | { |
259 | struct lp8788_buck *buck = rdev_get_drvdata(rdev); |
260 | enum lp8788_buck_id id = rdev_get_id(rdev); |
261 | u8 addr; |
262 | |
263 | if (buck->dvs) |
264 | lp8788_set_dvs(buck, id); |
265 | |
266 | addr = lp8788_select_buck_vout_addr(buck, id); |
267 | if (!lp8788_is_valid_buck_addr(addr)) |
268 | return -EINVAL; |
269 | |
270 | return lp8788_update_bits(lp: buck->lp, reg: addr, LP8788_VOUT_M, data: selector); |
271 | } |
272 | |
273 | static int lp8788_buck12_get_voltage_sel(struct regulator_dev *rdev) |
274 | { |
275 | struct lp8788_buck *buck = rdev_get_drvdata(rdev); |
276 | enum lp8788_buck_id id = rdev_get_id(rdev); |
277 | int ret; |
278 | u8 val, addr; |
279 | |
280 | addr = lp8788_select_buck_vout_addr(buck, id); |
281 | if (!lp8788_is_valid_buck_addr(addr)) |
282 | return -EINVAL; |
283 | |
284 | ret = lp8788_read_byte(lp: buck->lp, reg: addr, data: &val); |
285 | if (ret) |
286 | return ret; |
287 | |
288 | return val & LP8788_VOUT_M; |
289 | } |
290 | |
291 | static int lp8788_buck_enable_time(struct regulator_dev *rdev) |
292 | { |
293 | struct lp8788_buck *buck = rdev_get_drvdata(rdev); |
294 | enum lp8788_buck_id id = rdev_get_id(rdev); |
295 | u8 val, addr = LP8788_BUCK1_TIMESTEP + id; |
296 | |
297 | if (lp8788_read_byte(lp: buck->lp, reg: addr, data: &val)) |
298 | return -EINVAL; |
299 | |
300 | val = (val & LP8788_STARTUP_TIME_M) >> LP8788_STARTUP_TIME_S; |
301 | |
302 | return ENABLE_TIME_USEC * val; |
303 | } |
304 | |
305 | static int lp8788_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) |
306 | { |
307 | struct lp8788_buck *buck = rdev_get_drvdata(rdev); |
308 | enum lp8788_buck_id id = rdev_get_id(rdev); |
309 | u8 mask, val; |
310 | |
311 | mask = BUCK_FPWM_MASK(id); |
312 | switch (mode) { |
313 | case REGULATOR_MODE_FAST: |
314 | val = LP8788_FORCE_PWM << BUCK_FPWM_SHIFT(id); |
315 | break; |
316 | case REGULATOR_MODE_NORMAL: |
317 | val = LP8788_AUTO_PWM << BUCK_FPWM_SHIFT(id); |
318 | break; |
319 | default: |
320 | return -EINVAL; |
321 | } |
322 | |
323 | return lp8788_update_bits(lp: buck->lp, LP8788_BUCK_PWM, mask, data: val); |
324 | } |
325 | |
326 | static unsigned int lp8788_buck_get_mode(struct regulator_dev *rdev) |
327 | { |
328 | struct lp8788_buck *buck = rdev_get_drvdata(rdev); |
329 | enum lp8788_buck_id id = rdev_get_id(rdev); |
330 | u8 val; |
331 | int ret; |
332 | |
333 | ret = lp8788_read_byte(lp: buck->lp, LP8788_BUCK_PWM, data: &val); |
334 | if (ret) |
335 | return ret; |
336 | |
337 | return val & BUCK_FPWM_MASK(id) ? |
338 | REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; |
339 | } |
340 | |
341 | static const struct regulator_ops lp8788_buck12_ops = { |
342 | .list_voltage = regulator_list_voltage_linear_range, |
343 | .map_voltage = regulator_map_voltage_linear_range, |
344 | .set_voltage_sel = lp8788_buck12_set_voltage_sel, |
345 | .get_voltage_sel = lp8788_buck12_get_voltage_sel, |
346 | .enable = regulator_enable_regmap, |
347 | .disable = regulator_disable_regmap, |
348 | .is_enabled = regulator_is_enabled_regmap, |
349 | .enable_time = lp8788_buck_enable_time, |
350 | .set_mode = lp8788_buck_set_mode, |
351 | .get_mode = lp8788_buck_get_mode, |
352 | }; |
353 | |
354 | static const struct regulator_ops lp8788_buck34_ops = { |
355 | .list_voltage = regulator_list_voltage_linear_range, |
356 | .map_voltage = regulator_map_voltage_linear_range, |
357 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
358 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
359 | .enable = regulator_enable_regmap, |
360 | .disable = regulator_disable_regmap, |
361 | .is_enabled = regulator_is_enabled_regmap, |
362 | .enable_time = lp8788_buck_enable_time, |
363 | .set_mode = lp8788_buck_set_mode, |
364 | .get_mode = lp8788_buck_get_mode, |
365 | }; |
366 | |
367 | static const struct regulator_desc lp8788_buck_desc[] = { |
368 | { |
369 | .name = "buck1" , |
370 | .id = BUCK1, |
371 | .ops = &lp8788_buck12_ops, |
372 | .n_voltages = 26, |
373 | .linear_ranges = buck_volt_ranges, |
374 | .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges), |
375 | .type = REGULATOR_VOLTAGE, |
376 | .owner = THIS_MODULE, |
377 | .enable_reg = LP8788_EN_BUCK, |
378 | .enable_mask = LP8788_EN_BUCK1_M, |
379 | }, |
380 | { |
381 | .name = "buck2" , |
382 | .id = BUCK2, |
383 | .ops = &lp8788_buck12_ops, |
384 | .n_voltages = 26, |
385 | .linear_ranges = buck_volt_ranges, |
386 | .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges), |
387 | .type = REGULATOR_VOLTAGE, |
388 | .owner = THIS_MODULE, |
389 | .enable_reg = LP8788_EN_BUCK, |
390 | .enable_mask = LP8788_EN_BUCK2_M, |
391 | }, |
392 | { |
393 | .name = "buck3" , |
394 | .id = BUCK3, |
395 | .ops = &lp8788_buck34_ops, |
396 | .n_voltages = 26, |
397 | .linear_ranges = buck_volt_ranges, |
398 | .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges), |
399 | .type = REGULATOR_VOLTAGE, |
400 | .owner = THIS_MODULE, |
401 | .vsel_reg = LP8788_BUCK3_VOUT, |
402 | .vsel_mask = LP8788_VOUT_M, |
403 | .enable_reg = LP8788_EN_BUCK, |
404 | .enable_mask = LP8788_EN_BUCK3_M, |
405 | }, |
406 | { |
407 | .name = "buck4" , |
408 | .id = BUCK4, |
409 | .ops = &lp8788_buck34_ops, |
410 | .n_voltages = 26, |
411 | .linear_ranges = buck_volt_ranges, |
412 | .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges), |
413 | .type = REGULATOR_VOLTAGE, |
414 | .owner = THIS_MODULE, |
415 | .vsel_reg = LP8788_BUCK4_VOUT, |
416 | .vsel_mask = LP8788_VOUT_M, |
417 | .enable_reg = LP8788_EN_BUCK, |
418 | .enable_mask = LP8788_EN_BUCK4_M, |
419 | }, |
420 | }; |
421 | |
422 | static int lp8788_dvs_gpio_request(struct platform_device *pdev, |
423 | struct lp8788_buck *buck, |
424 | enum lp8788_buck_id id) |
425 | { |
426 | struct lp8788_platform_data *pdata = buck->lp->pdata; |
427 | char *b1_name = "LP8788_B1_DVS" ; |
428 | char *b2_name[] = { "LP8788_B2_DVS1" , "LP8788_B2_DVS2" }; |
429 | int i, gpio, ret; |
430 | |
431 | switch (id) { |
432 | case BUCK1: |
433 | gpio = pdata->buck1_dvs->gpio; |
434 | ret = devm_gpio_request_one(dev: &pdev->dev, gpio, flags: DVS_LOW, |
435 | label: b1_name); |
436 | if (ret) |
437 | return ret; |
438 | |
439 | buck->dvs = pdata->buck1_dvs; |
440 | break; |
441 | case BUCK2: |
442 | for (i = 0; i < LP8788_NUM_BUCK2_DVS; i++) { |
443 | gpio = pdata->buck2_dvs->gpio[i]; |
444 | ret = devm_gpio_request_one(dev: &pdev->dev, gpio, |
445 | flags: DVS_LOW, label: b2_name[i]); |
446 | if (ret) |
447 | return ret; |
448 | } |
449 | buck->dvs = pdata->buck2_dvs; |
450 | break; |
451 | default: |
452 | break; |
453 | } |
454 | |
455 | return 0; |
456 | } |
457 | |
458 | static int lp8788_init_dvs(struct platform_device *pdev, |
459 | struct lp8788_buck *buck, enum lp8788_buck_id id) |
460 | { |
461 | struct lp8788_platform_data *pdata = buck->lp->pdata; |
462 | u8 mask[] = { LP8788_BUCK1_DVS_SEL_M, LP8788_BUCK2_DVS_SEL_M }; |
463 | u8 val[] = { LP8788_BUCK1_DVS_PIN, LP8788_BUCK2_DVS_PIN }; |
464 | u8 default_dvs_mode[] = { LP8788_BUCK1_DVS_I2C, LP8788_BUCK2_DVS_I2C }; |
465 | |
466 | /* no dvs for buck3, 4 */ |
467 | if (id > BUCK2) |
468 | return 0; |
469 | |
470 | /* no dvs platform data, then dvs will be selected by I2C registers */ |
471 | if (!pdata) |
472 | goto set_default_dvs_mode; |
473 | |
474 | if ((id == BUCK1 && !pdata->buck1_dvs) || |
475 | (id == BUCK2 && !pdata->buck2_dvs)) |
476 | goto set_default_dvs_mode; |
477 | |
478 | if (lp8788_dvs_gpio_request(pdev, buck, id)) |
479 | goto set_default_dvs_mode; |
480 | |
481 | return lp8788_update_bits(lp: buck->lp, LP8788_BUCK_DVS_SEL, mask: mask[id], |
482 | data: val[id]); |
483 | |
484 | set_default_dvs_mode: |
485 | return lp8788_update_bits(lp: buck->lp, LP8788_BUCK_DVS_SEL, mask: mask[id], |
486 | data: default_dvs_mode[id]); |
487 | } |
488 | |
489 | static int lp8788_buck_probe(struct platform_device *pdev) |
490 | { |
491 | struct lp8788 *lp = dev_get_drvdata(dev: pdev->dev.parent); |
492 | int id = pdev->id; |
493 | struct lp8788_buck *buck; |
494 | struct regulator_config cfg = { }; |
495 | struct regulator_dev *rdev; |
496 | int ret; |
497 | |
498 | if (id >= LP8788_NUM_BUCKS) |
499 | return -EINVAL; |
500 | |
501 | buck = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct lp8788_buck), GFP_KERNEL); |
502 | if (!buck) |
503 | return -ENOMEM; |
504 | |
505 | buck->lp = lp; |
506 | |
507 | ret = lp8788_init_dvs(pdev, buck, id); |
508 | if (ret) |
509 | return ret; |
510 | |
511 | cfg.dev = pdev->dev.parent; |
512 | cfg.init_data = lp->pdata ? lp->pdata->buck_data[id] : NULL; |
513 | cfg.driver_data = buck; |
514 | cfg.regmap = lp->regmap; |
515 | |
516 | rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &lp8788_buck_desc[id], config: &cfg); |
517 | if (IS_ERR(ptr: rdev)) { |
518 | ret = PTR_ERR(ptr: rdev); |
519 | dev_err(&pdev->dev, "BUCK%d regulator register err = %d\n" , |
520 | id + 1, ret); |
521 | return ret; |
522 | } |
523 | |
524 | buck->regulator = rdev; |
525 | platform_set_drvdata(pdev, data: buck); |
526 | |
527 | return 0; |
528 | } |
529 | |
530 | static struct platform_driver lp8788_buck_driver = { |
531 | .probe = lp8788_buck_probe, |
532 | .driver = { |
533 | .name = LP8788_DEV_BUCK, |
534 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
535 | }, |
536 | }; |
537 | |
538 | static int __init lp8788_buck_init(void) |
539 | { |
540 | return platform_driver_register(&lp8788_buck_driver); |
541 | } |
542 | subsys_initcall(lp8788_buck_init); |
543 | |
544 | static void __exit lp8788_buck_exit(void) |
545 | { |
546 | platform_driver_unregister(&lp8788_buck_driver); |
547 | } |
548 | module_exit(lp8788_buck_exit); |
549 | |
550 | MODULE_DESCRIPTION("TI LP8788 BUCK Driver" ); |
551 | MODULE_AUTHOR("Milo Kim" ); |
552 | MODULE_LICENSE("GPL" ); |
553 | MODULE_ALIAS("platform:lp8788-buck" ); |
554 | |