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9767ec7f SK |
1 | /* |
2 | * s5m8767.c | |
3 | * | |
4 | * Copyright (c) 2011 Samsung Electronics Co., Ltd | |
5 | * http://www.samsung.com | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/bug.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/gpio.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/regulator/driver.h> | |
22 | #include <linux/regulator/machine.h> | |
23 | #include <linux/mfd/s5m87xx/s5m-core.h> | |
24 | #include <linux/mfd/s5m87xx/s5m-pmic.h> | |
25 | ||
26 | struct s5m8767_info { | |
27 | struct device *dev; | |
28 | struct s5m87xx_dev *iodev; | |
29 | int num_regulators; | |
30 | struct regulator_dev **rdev; | |
31 | ||
32 | int ramp_delay; | |
33 | bool buck2_ramp; | |
34 | bool buck3_ramp; | |
35 | bool buck4_ramp; | |
36 | ||
37 | bool buck2_gpiodvs; | |
38 | bool buck3_gpiodvs; | |
39 | bool buck4_gpiodvs; | |
40 | u8 buck2_vol[8]; | |
41 | u8 buck3_vol[8]; | |
42 | u8 buck4_vol[8]; | |
43 | int buck_gpios[3]; | |
44 | int buck_gpioindex; | |
45 | }; | |
46 | ||
47 | struct s5m_voltage_desc { | |
48 | int max; | |
49 | int min; | |
50 | int step; | |
51 | }; | |
52 | ||
53 | static const struct s5m_voltage_desc buck_voltage_val1 = { | |
54 | .max = 2225000, | |
55 | .min = 650000, | |
56 | .step = 6250, | |
57 | }; | |
58 | ||
59 | static const struct s5m_voltage_desc buck_voltage_val2 = { | |
60 | .max = 1600000, | |
61 | .min = 600000, | |
62 | .step = 6250, | |
63 | }; | |
64 | ||
65 | static const struct s5m_voltage_desc buck_voltage_val3 = { | |
66 | .max = 3000000, | |
67 | .min = 750000, | |
68 | .step = 12500, | |
69 | }; | |
70 | ||
71 | static const struct s5m_voltage_desc ldo_voltage_val1 = { | |
72 | .max = 3950000, | |
73 | .min = 800000, | |
74 | .step = 50000, | |
75 | }; | |
76 | ||
77 | static const struct s5m_voltage_desc ldo_voltage_val2 = { | |
78 | .max = 2375000, | |
79 | .min = 800000, | |
80 | .step = 25000, | |
81 | }; | |
82 | ||
83 | static const struct s5m_voltage_desc *reg_voltage_map[] = { | |
84 | [S5M8767_LDO1] = &ldo_voltage_val2, | |
85 | [S5M8767_LDO2] = &ldo_voltage_val2, | |
86 | [S5M8767_LDO3] = &ldo_voltage_val1, | |
87 | [S5M8767_LDO4] = &ldo_voltage_val1, | |
88 | [S5M8767_LDO5] = &ldo_voltage_val1, | |
89 | [S5M8767_LDO6] = &ldo_voltage_val2, | |
90 | [S5M8767_LDO7] = &ldo_voltage_val2, | |
91 | [S5M8767_LDO8] = &ldo_voltage_val2, | |
92 | [S5M8767_LDO9] = &ldo_voltage_val1, | |
93 | [S5M8767_LDO10] = &ldo_voltage_val1, | |
94 | [S5M8767_LDO11] = &ldo_voltage_val1, | |
95 | [S5M8767_LDO12] = &ldo_voltage_val1, | |
96 | [S5M8767_LDO13] = &ldo_voltage_val1, | |
97 | [S5M8767_LDO14] = &ldo_voltage_val1, | |
98 | [S5M8767_LDO15] = &ldo_voltage_val2, | |
99 | [S5M8767_LDO16] = &ldo_voltage_val1, | |
100 | [S5M8767_LDO17] = &ldo_voltage_val1, | |
101 | [S5M8767_LDO18] = &ldo_voltage_val1, | |
102 | [S5M8767_LDO19] = &ldo_voltage_val1, | |
103 | [S5M8767_LDO20] = &ldo_voltage_val1, | |
104 | [S5M8767_LDO21] = &ldo_voltage_val1, | |
105 | [S5M8767_LDO22] = &ldo_voltage_val1, | |
106 | [S5M8767_LDO23] = &ldo_voltage_val1, | |
107 | [S5M8767_LDO24] = &ldo_voltage_val1, | |
108 | [S5M8767_LDO25] = &ldo_voltage_val1, | |
109 | [S5M8767_LDO26] = &ldo_voltage_val1, | |
110 | [S5M8767_LDO27] = &ldo_voltage_val1, | |
111 | [S5M8767_LDO28] = &ldo_voltage_val1, | |
112 | [S5M8767_BUCK1] = &buck_voltage_val1, | |
113 | [S5M8767_BUCK2] = &buck_voltage_val2, | |
114 | [S5M8767_BUCK3] = &buck_voltage_val2, | |
115 | [S5M8767_BUCK4] = &buck_voltage_val2, | |
116 | [S5M8767_BUCK5] = &buck_voltage_val1, | |
117 | [S5M8767_BUCK6] = &buck_voltage_val1, | |
118 | [S5M8767_BUCK7] = NULL, | |
119 | [S5M8767_BUCK8] = NULL, | |
120 | [S5M8767_BUCK9] = &buck_voltage_val3, | |
121 | }; | |
122 | ||
9767ec7f SK |
123 | static int s5m8767_list_voltage(struct regulator_dev *rdev, |
124 | unsigned int selector) | |
125 | { | |
126 | const struct s5m_voltage_desc *desc; | |
20a14b84 | 127 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
128 | int val; |
129 | ||
130 | if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0) | |
131 | return -EINVAL; | |
132 | ||
133 | desc = reg_voltage_map[reg_id]; | |
134 | if (desc == NULL) | |
135 | return -EINVAL; | |
136 | ||
137 | val = desc->min + desc->step * selector; | |
138 | if (val > desc->max) | |
139 | return -EINVAL; | |
140 | ||
141 | return val; | |
142 | } | |
143 | ||
144 | static int s5m8767_get_register(struct regulator_dev *rdev, int *reg) | |
145 | { | |
20a14b84 | 146 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
147 | |
148 | switch (reg_id) { | |
149 | case S5M8767_LDO1 ... S5M8767_LDO2: | |
150 | *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); | |
151 | break; | |
152 | case S5M8767_LDO3 ... S5M8767_LDO28: | |
153 | *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); | |
154 | break; | |
155 | case S5M8767_BUCK1: | |
156 | *reg = S5M8767_REG_BUCK1CTRL1; | |
157 | break; | |
158 | case S5M8767_BUCK2 ... S5M8767_BUCK4: | |
159 | *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9; | |
160 | break; | |
161 | case S5M8767_BUCK5: | |
162 | *reg = S5M8767_REG_BUCK5CTRL1; | |
163 | break; | |
164 | case S5M8767_BUCK6 ... S5M8767_BUCK9: | |
165 | *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2; | |
166 | break; | |
167 | default: | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | static int s5m8767_reg_is_enabled(struct regulator_dev *rdev) | |
175 | { | |
176 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
177 | int ret, reg; | |
178 | int mask = 0xc0, pattern = 0xc0; | |
179 | u8 val; | |
180 | ||
181 | ret = s5m8767_get_register(rdev, ®); | |
182 | if (ret == -EINVAL) | |
183 | return 1; | |
184 | else if (ret) | |
185 | return ret; | |
186 | ||
187 | ret = s5m_reg_read(s5m8767->iodev, reg, &val); | |
188 | if (ret) | |
189 | return ret; | |
190 | ||
191 | return (val & mask) == pattern; | |
192 | } | |
193 | ||
194 | static int s5m8767_reg_enable(struct regulator_dev *rdev) | |
195 | { | |
196 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
197 | int ret, reg; | |
198 | int mask = 0xc0, pattern = 0xc0; | |
199 | ||
200 | ret = s5m8767_get_register(rdev, ®); | |
201 | if (ret) | |
202 | return ret; | |
203 | ||
204 | return s5m_reg_update(s5m8767->iodev, reg, pattern, mask); | |
205 | } | |
206 | ||
207 | static int s5m8767_reg_disable(struct regulator_dev *rdev) | |
208 | { | |
209 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
210 | int ret, reg; | |
211 | int mask = 0xc0, pattern = 0xc0; | |
212 | ||
213 | ret = s5m8767_get_register(rdev, ®); | |
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask); | |
218 | } | |
219 | ||
220 | static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg) | |
221 | { | |
20a14b84 | 222 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
223 | int reg; |
224 | ||
225 | switch (reg_id) { | |
226 | case S5M8767_LDO1 ... S5M8767_LDO2: | |
227 | reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); | |
228 | break; | |
229 | case S5M8767_LDO3 ... S5M8767_LDO28: | |
230 | reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); | |
231 | break; | |
232 | case S5M8767_BUCK1: | |
233 | reg = S5M8767_REG_BUCK1CTRL2; | |
234 | break; | |
235 | case S5M8767_BUCK2: | |
236 | reg = S5M8767_REG_BUCK2DVS1; | |
237 | break; | |
238 | case S5M8767_BUCK3: | |
239 | reg = S5M8767_REG_BUCK3DVS1; | |
240 | break; | |
241 | case S5M8767_BUCK4: | |
242 | reg = S5M8767_REG_BUCK4DVS1; | |
243 | break; | |
244 | case S5M8767_BUCK5: | |
245 | reg = S5M8767_REG_BUCK5CTRL2; | |
246 | break; | |
247 | case S5M8767_BUCK6 ... S5M8767_BUCK9: | |
248 | reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2; | |
249 | break; | |
250 | default: | |
251 | return -EINVAL; | |
252 | } | |
253 | ||
254 | *_reg = reg; | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int s5m8767_get_voltage_sel(struct regulator_dev *rdev) | |
260 | { | |
261 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
262 | int reg, mask = 0xff, ret; | |
20a14b84 | 263 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
264 | u8 val; |
265 | ||
266 | ret = s5m8767_get_voltage_register(rdev, ®); | |
267 | if (ret) | |
268 | return ret; | |
269 | ||
270 | switch (reg_id) { | |
271 | case S5M8767_LDO1 ... S5M8767_LDO28: | |
272 | mask = 0x3f; | |
273 | break; | |
274 | case S5M8767_BUCK2: | |
275 | if (s5m8767->buck2_gpiodvs) | |
276 | reg += s5m8767->buck_gpioindex; | |
277 | break; | |
278 | case S5M8767_BUCK3: | |
279 | if (s5m8767->buck3_gpiodvs) | |
280 | reg += s5m8767->buck_gpioindex; | |
281 | break; | |
282 | case S5M8767_BUCK4: | |
283 | if (s5m8767->buck4_gpiodvs) | |
284 | reg += s5m8767->buck_gpioindex; | |
285 | break; | |
286 | } | |
287 | ||
288 | ret = s5m_reg_read(s5m8767->iodev, reg, &val); | |
289 | if (ret) | |
290 | return ret; | |
291 | ||
292 | val &= mask; | |
293 | ||
294 | return val; | |
295 | } | |
296 | ||
297 | static inline int s5m8767_convert_voltage( | |
298 | const struct s5m_voltage_desc *desc, | |
299 | int min_vol, int max_vol) | |
300 | { | |
301 | int out_vol = 0; | |
302 | ||
303 | if (desc == NULL) | |
304 | return -EINVAL; | |
305 | ||
306 | if (max_vol < desc->min || min_vol > desc->max) | |
307 | return -EINVAL; | |
308 | ||
309 | out_vol = (min_vol - desc->min) / desc->step; | |
310 | ||
311 | if (desc->min + desc->step * out_vol > max_vol) | |
312 | return -EINVAL; | |
313 | ||
314 | return out_vol; | |
315 | } | |
316 | ||
317 | static int s5m8767_set_voltage(struct regulator_dev *rdev, | |
318 | int min_uV, int max_uV, unsigned *selector) | |
319 | { | |
320 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
321 | int min_vol = min_uV, max_vol = max_uV; | |
322 | const struct s5m_voltage_desc *desc; | |
20a14b84 | 323 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
324 | int reg, mask, ret; |
325 | int i; | |
326 | u8 val; | |
327 | ||
328 | switch (reg_id) { | |
329 | case S5M8767_LDO1 ... S5M8767_LDO28: | |
330 | mask = 0x3f; | |
331 | break; | |
332 | case S5M8767_BUCK1 ... S5M8767_BUCK6: | |
333 | mask = 0xff; | |
334 | break; | |
335 | case S5M8767_BUCK7 ... S5M8767_BUCK8: | |
336 | return -EINVAL; | |
337 | case S5M8767_BUCK9: | |
338 | mask = 0xff; | |
339 | break; | |
340 | default: | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
344 | desc = reg_voltage_map[reg_id]; | |
345 | ||
346 | i = s5m8767_convert_voltage(desc, min_vol, max_vol); | |
347 | if (i < 0) | |
348 | return i; | |
349 | ||
350 | ret = s5m8767_get_voltage_register(rdev, ®); | |
351 | if (ret) | |
352 | return ret; | |
353 | ||
354 | s5m_reg_read(s5m8767->iodev, reg, &val); | |
355 | val = val & mask; | |
356 | ||
357 | ret = s5m_reg_write(s5m8767->iodev, reg, val); | |
358 | *selector = i; | |
359 | ||
360 | return ret; | |
361 | } | |
362 | ||
363 | static inline void s5m8767_set_high(struct s5m8767_info *s5m8767) | |
364 | { | |
365 | int temp_index = s5m8767->buck_gpioindex; | |
366 | ||
367 | gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); | |
368 | gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); | |
369 | gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); | |
370 | } | |
371 | ||
372 | static inline void s5m8767_set_low(struct s5m8767_info *s5m8767) | |
373 | { | |
374 | int temp_index = s5m8767->buck_gpioindex; | |
375 | ||
376 | gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); | |
377 | gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); | |
378 | gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); | |
379 | } | |
380 | ||
381 | static int s5m8767_set_voltage_buck(struct regulator_dev *rdev, | |
382 | int min_uV, int max_uV, unsigned *selector) | |
383 | { | |
384 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
20a14b84 | 385 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
386 | const struct s5m_voltage_desc *desc; |
387 | int new_val, old_val, i = 0; | |
388 | int min_vol = min_uV, max_vol = max_uV; | |
389 | ||
390 | if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6) | |
391 | return -EINVAL; | |
392 | ||
393 | switch (reg_id) { | |
394 | case S5M8767_BUCK1: | |
395 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
396 | case S5M8767_BUCK2 ... S5M8767_BUCK4: | |
397 | break; | |
398 | case S5M8767_BUCK5 ... S5M8767_BUCK6: | |
399 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
400 | case S5M8767_BUCK9: | |
401 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
402 | } | |
403 | ||
404 | desc = reg_voltage_map[reg_id]; | |
405 | new_val = s5m8767_convert_voltage(desc, min_vol, max_vol); | |
406 | if (new_val < 0) | |
407 | return new_val; | |
408 | ||
409 | switch (reg_id) { | |
410 | case S5M8767_BUCK2: | |
411 | if (s5m8767->buck2_gpiodvs) { | |
412 | while (s5m8767->buck2_vol[i] != new_val) | |
413 | i++; | |
414 | } else | |
415 | return s5m8767_set_voltage(rdev, min_uV, | |
416 | max_uV, selector); | |
417 | break; | |
418 | case S5M8767_BUCK3: | |
419 | if (s5m8767->buck3_gpiodvs) { | |
420 | while (s5m8767->buck3_vol[i] != new_val) | |
421 | i++; | |
422 | } else | |
423 | return s5m8767_set_voltage(rdev, min_uV, | |
424 | max_uV, selector); | |
425 | break; | |
426 | case S5M8767_BUCK4: | |
427 | if (s5m8767->buck3_gpiodvs) { | |
428 | while (s5m8767->buck4_vol[i] != new_val) | |
429 | i++; | |
430 | } else | |
431 | return s5m8767_set_voltage(rdev, min_uV, | |
432 | max_uV, selector); | |
433 | break; | |
434 | } | |
435 | ||
436 | old_val = s5m8767->buck_gpioindex; | |
437 | s5m8767->buck_gpioindex = i; | |
438 | ||
439 | if (i > old_val) | |
440 | s5m8767_set_high(s5m8767); | |
441 | else | |
442 | s5m8767_set_low(s5m8767); | |
443 | ||
444 | *selector = new_val; | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev, | |
449 | unsigned int old_sel, | |
450 | unsigned int new_sel) | |
451 | { | |
452 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
453 | const struct s5m_voltage_desc *desc; | |
20a14b84 | 454 | int reg_id = rdev_get_id(rdev); |
9767ec7f | 455 | |
9767ec7f SK |
456 | desc = reg_voltage_map[reg_id]; |
457 | ||
9767ec7f | 458 | if (old_sel < new_sel) |
89e0f0e4 | 459 | return DIV_ROUND_UP(desc->step * (new_sel - old_sel), |
0f8b9c77 | 460 | s5m8767->ramp_delay * 1000); |
89e0f0e4 | 461 | return 0; |
9767ec7f SK |
462 | } |
463 | ||
464 | static struct regulator_ops s5m8767_ldo_ops = { | |
465 | .list_voltage = s5m8767_list_voltage, | |
466 | .is_enabled = s5m8767_reg_is_enabled, | |
467 | .enable = s5m8767_reg_enable, | |
468 | .disable = s5m8767_reg_disable, | |
469 | .get_voltage_sel = s5m8767_get_voltage_sel, | |
470 | .set_voltage = s5m8767_set_voltage, | |
471 | .set_voltage_time_sel = s5m8767_set_voltage_time_sel, | |
472 | }; | |
473 | ||
474 | static struct regulator_ops s5m8767_buck_ops = { | |
475 | .list_voltage = s5m8767_list_voltage, | |
476 | .is_enabled = s5m8767_reg_is_enabled, | |
477 | .enable = s5m8767_reg_enable, | |
478 | .disable = s5m8767_reg_disable, | |
479 | .get_voltage_sel = s5m8767_get_voltage_sel, | |
480 | .set_voltage = s5m8767_set_voltage_buck, | |
481 | .set_voltage_time_sel = s5m8767_set_voltage_time_sel, | |
482 | }; | |
483 | ||
484 | #define regulator_desc_ldo(num) { \ | |
485 | .name = "LDO"#num, \ | |
486 | .id = S5M8767_LDO##num, \ | |
487 | .ops = &s5m8767_ldo_ops, \ | |
488 | .type = REGULATOR_VOLTAGE, \ | |
489 | .owner = THIS_MODULE, \ | |
490 | } | |
491 | #define regulator_desc_buck(num) { \ | |
492 | .name = "BUCK"#num, \ | |
493 | .id = S5M8767_BUCK##num, \ | |
494 | .ops = &s5m8767_buck_ops, \ | |
495 | .type = REGULATOR_VOLTAGE, \ | |
496 | .owner = THIS_MODULE, \ | |
497 | } | |
498 | ||
499 | static struct regulator_desc regulators[] = { | |
500 | regulator_desc_ldo(1), | |
501 | regulator_desc_ldo(2), | |
502 | regulator_desc_ldo(3), | |
503 | regulator_desc_ldo(4), | |
504 | regulator_desc_ldo(5), | |
505 | regulator_desc_ldo(6), | |
506 | regulator_desc_ldo(7), | |
507 | regulator_desc_ldo(8), | |
508 | regulator_desc_ldo(9), | |
509 | regulator_desc_ldo(10), | |
510 | regulator_desc_ldo(11), | |
511 | regulator_desc_ldo(12), | |
512 | regulator_desc_ldo(13), | |
513 | regulator_desc_ldo(14), | |
514 | regulator_desc_ldo(15), | |
515 | regulator_desc_ldo(16), | |
516 | regulator_desc_ldo(17), | |
517 | regulator_desc_ldo(18), | |
518 | regulator_desc_ldo(19), | |
519 | regulator_desc_ldo(20), | |
520 | regulator_desc_ldo(21), | |
521 | regulator_desc_ldo(22), | |
522 | regulator_desc_ldo(23), | |
523 | regulator_desc_ldo(24), | |
524 | regulator_desc_ldo(25), | |
525 | regulator_desc_ldo(26), | |
526 | regulator_desc_ldo(27), | |
527 | regulator_desc_ldo(28), | |
528 | regulator_desc_buck(1), | |
529 | regulator_desc_buck(2), | |
530 | regulator_desc_buck(3), | |
531 | regulator_desc_buck(4), | |
532 | regulator_desc_buck(5), | |
533 | regulator_desc_buck(6), | |
534 | regulator_desc_buck(7), | |
535 | regulator_desc_buck(8), | |
536 | regulator_desc_buck(9), | |
537 | }; | |
538 | ||
539 | static __devinit int s5m8767_pmic_probe(struct platform_device *pdev) | |
540 | { | |
541 | struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
542 | struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev); | |
543 | struct regulator_dev **rdev; | |
544 | struct s5m8767_info *s5m8767; | |
22cd2fef | 545 | int i, ret, size; |
9767ec7f SK |
546 | |
547 | if (!pdata) { | |
548 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); | |
549 | return -ENODEV; | |
550 | } | |
551 | ||
552 | s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info), | |
553 | GFP_KERNEL); | |
554 | if (!s5m8767) | |
555 | return -ENOMEM; | |
556 | ||
557 | size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2); | |
558 | s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); | |
559 | if (!s5m8767->rdev) | |
560 | return -ENOMEM; | |
561 | ||
562 | rdev = s5m8767->rdev; | |
563 | s5m8767->dev = &pdev->dev; | |
564 | s5m8767->iodev = iodev; | |
565 | s5m8767->num_regulators = S5M8767_REG_MAX - 2; | |
566 | platform_set_drvdata(pdev, s5m8767); | |
9767ec7f SK |
567 | |
568 | s5m8767->buck_gpioindex = pdata->buck_default_idx; | |
569 | s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs; | |
570 | s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs; | |
571 | s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs; | |
572 | s5m8767->buck_gpios[0] = pdata->buck_gpios[0]; | |
573 | s5m8767->buck_gpios[1] = pdata->buck_gpios[1]; | |
574 | s5m8767->buck_gpios[2] = pdata->buck_gpios[2]; | |
575 | s5m8767->ramp_delay = pdata->buck_ramp_delay; | |
576 | s5m8767->buck2_ramp = pdata->buck2_ramp_enable; | |
577 | s5m8767->buck3_ramp = pdata->buck3_ramp_enable; | |
578 | s5m8767->buck4_ramp = pdata->buck4_ramp_enable; | |
579 | ||
580 | for (i = 0; i < 8; i++) { | |
581 | if (s5m8767->buck2_gpiodvs) { | |
582 | s5m8767->buck2_vol[i] = | |
583 | s5m8767_convert_voltage( | |
584 | &buck_voltage_val2, | |
585 | pdata->buck2_voltage[i], | |
586 | pdata->buck2_voltage[i] + | |
587 | buck_voltage_val2.step); | |
588 | } | |
589 | ||
590 | if (s5m8767->buck3_gpiodvs) { | |
591 | s5m8767->buck3_vol[i] = | |
592 | s5m8767_convert_voltage( | |
593 | &buck_voltage_val2, | |
594 | pdata->buck3_voltage[i], | |
595 | pdata->buck3_voltage[i] + | |
596 | buck_voltage_val2.step); | |
597 | } | |
598 | ||
599 | if (s5m8767->buck4_gpiodvs) { | |
600 | s5m8767->buck4_vol[i] = | |
601 | s5m8767_convert_voltage( | |
602 | &buck_voltage_val2, | |
603 | pdata->buck4_voltage[i], | |
604 | pdata->buck4_voltage[i] + | |
605 | buck_voltage_val2.step); | |
606 | } | |
607 | } | |
608 | ||
609 | if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs || | |
610 | pdata->buck4_gpiodvs) { | |
611 | if (gpio_is_valid(pdata->buck_gpios[0]) && | |
612 | gpio_is_valid(pdata->buck_gpios[1]) && | |
613 | gpio_is_valid(pdata->buck_gpios[2])) { | |
614 | ret = gpio_request(pdata->buck_gpios[0], | |
615 | "S5M8767 SET1"); | |
616 | if (ret == -EBUSY) | |
617 | dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n"); | |
618 | ||
619 | ret = gpio_request(pdata->buck_gpios[1], | |
620 | "S5M8767 SET2"); | |
621 | if (ret == -EBUSY) | |
622 | dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n"); | |
623 | ||
624 | ret = gpio_request(pdata->buck_gpios[2], | |
625 | "S5M8767 SET3"); | |
626 | if (ret == -EBUSY) | |
627 | dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n"); | |
628 | /* SET1 GPIO */ | |
629 | gpio_direction_output(pdata->buck_gpios[0], | |
630 | (s5m8767->buck_gpioindex >> 2) & 0x1); | |
631 | /* SET2 GPIO */ | |
632 | gpio_direction_output(pdata->buck_gpios[1], | |
633 | (s5m8767->buck_gpioindex >> 1) & 0x1); | |
634 | /* SET3 GPIO */ | |
635 | gpio_direction_output(pdata->buck_gpios[2], | |
636 | (s5m8767->buck_gpioindex >> 0) & 0x1); | |
637 | ret = 0; | |
638 | } else { | |
639 | dev_err(&pdev->dev, "GPIO NOT VALID\n"); | |
640 | ret = -EINVAL; | |
641 | return ret; | |
642 | } | |
643 | } | |
644 | ||
645 | if (pdata->buck2_gpiodvs) { | |
646 | if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) { | |
647 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
648 | ret = -EINVAL; | |
649 | return ret; | |
650 | } | |
651 | } | |
652 | ||
653 | if (pdata->buck3_gpiodvs) { | |
654 | if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) { | |
655 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
656 | ret = -EINVAL; | |
657 | return ret; | |
658 | } | |
659 | } | |
660 | ||
661 | if (pdata->buck4_gpiodvs) { | |
662 | if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) { | |
663 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
664 | ret = -EINVAL; | |
665 | return ret; | |
666 | } | |
667 | } | |
668 | ||
669 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, | |
670 | (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
671 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, | |
672 | (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
673 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, | |
674 | (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
675 | ||
676 | /* Initialize GPIO DVS registers */ | |
677 | for (i = 0; i < 8; i++) { | |
678 | if (s5m8767->buck2_gpiodvs) { | |
679 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i, | |
680 | s5m8767->buck2_vol[i]); | |
681 | } | |
682 | ||
683 | if (s5m8767->buck3_gpiodvs) { | |
684 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i, | |
685 | s5m8767->buck3_vol[i]); | |
686 | } | |
687 | ||
688 | if (s5m8767->buck4_gpiodvs) { | |
689 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i, | |
690 | s5m8767->buck4_vol[i]); | |
691 | } | |
692 | } | |
693 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff); | |
694 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff); | |
695 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff); | |
696 | ||
697 | if (s5m8767->buck2_ramp) | |
698 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08); | |
699 | ||
700 | if (s5m8767->buck3_ramp) | |
701 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04); | |
702 | ||
703 | if (s5m8767->buck4_ramp) | |
704 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02); | |
705 | ||
706 | if (s5m8767->buck2_ramp || s5m8767->buck3_ramp | |
707 | || s5m8767->buck4_ramp) { | |
708 | switch (s5m8767->ramp_delay) { | |
709 | case 15: | |
710 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
711 | 0xc0, 0xf0); | |
047ec220 | 712 | break; |
9767ec7f SK |
713 | case 25: |
714 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
715 | 0xd0, 0xf0); | |
047ec220 | 716 | break; |
9767ec7f SK |
717 | case 50: |
718 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
719 | 0xe0, 0xf0); | |
047ec220 | 720 | break; |
9767ec7f SK |
721 | case 100: |
722 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
723 | 0xf0, 0xf0); | |
047ec220 | 724 | break; |
9767ec7f SK |
725 | default: |
726 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
727 | 0x90, 0xf0); | |
728 | } | |
729 | } | |
730 | ||
731 | for (i = 0; i < pdata->num_regulators; i++) { | |
732 | const struct s5m_voltage_desc *desc; | |
733 | int id = pdata->regulators[i].id; | |
734 | ||
735 | desc = reg_voltage_map[id]; | |
736 | if (desc) | |
737 | regulators[id].n_voltages = | |
738 | (desc->max - desc->min) / desc->step + 1; | |
739 | ||
740 | rdev[i] = regulator_register(®ulators[id], s5m8767->dev, | |
0ce69873 | 741 | pdata->regulators[i].initdata, s5m8767, NULL); |
9767ec7f SK |
742 | if (IS_ERR(rdev[i])) { |
743 | ret = PTR_ERR(rdev[i]); | |
744 | dev_err(s5m8767->dev, "regulator init failed for %d\n", | |
745 | id); | |
746 | rdev[i] = NULL; | |
747 | goto err; | |
748 | } | |
749 | } | |
750 | ||
751 | return 0; | |
752 | err: | |
753 | for (i = 0; i < s5m8767->num_regulators; i++) | |
754 | if (rdev[i]) | |
755 | regulator_unregister(rdev[i]); | |
756 | ||
757 | return ret; | |
758 | } | |
759 | ||
760 | static int __devexit s5m8767_pmic_remove(struct platform_device *pdev) | |
761 | { | |
762 | struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev); | |
763 | struct regulator_dev **rdev = s5m8767->rdev; | |
764 | int i; | |
765 | ||
766 | for (i = 0; i < s5m8767->num_regulators; i++) | |
767 | if (rdev[i]) | |
768 | regulator_unregister(rdev[i]); | |
769 | ||
770 | return 0; | |
771 | } | |
772 | ||
773 | static const struct platform_device_id s5m8767_pmic_id[] = { | |
774 | { "s5m8767-pmic", 0}, | |
775 | { }, | |
776 | }; | |
777 | MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id); | |
778 | ||
779 | static struct platform_driver s5m8767_pmic_driver = { | |
780 | .driver = { | |
781 | .name = "s5m8767-pmic", | |
782 | .owner = THIS_MODULE, | |
783 | }, | |
784 | .probe = s5m8767_pmic_probe, | |
785 | .remove = __devexit_p(s5m8767_pmic_remove), | |
786 | .id_table = s5m8767_pmic_id, | |
787 | }; | |
788 | ||
789 | static int __init s5m8767_pmic_init(void) | |
790 | { | |
791 | return platform_driver_register(&s5m8767_pmic_driver); | |
792 | } | |
793 | subsys_initcall(s5m8767_pmic_init); | |
794 | ||
795 | static void __exit s5m8767_pmic_exit(void) | |
796 | { | |
797 | platform_driver_unregister(&s5m8767_pmic_driver); | |
798 | } | |
799 | module_exit(s5m8767_pmic_exit); | |
800 | ||
801 | /* Module information */ | |
802 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
803 | MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver"); | |
804 | MODULE_LICENSE("GPL"); |