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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; | |
7e44bb83 | 31 | struct s5m_opmode_data *opmode; |
9767ec7f SK |
32 | |
33 | int ramp_delay; | |
34 | bool buck2_ramp; | |
35 | bool buck3_ramp; | |
36 | bool buck4_ramp; | |
37 | ||
38 | bool buck2_gpiodvs; | |
39 | bool buck3_gpiodvs; | |
40 | bool buck4_gpiodvs; | |
41 | u8 buck2_vol[8]; | |
42 | u8 buck3_vol[8]; | |
43 | u8 buck4_vol[8]; | |
44 | int buck_gpios[3]; | |
45 | int buck_gpioindex; | |
46 | }; | |
47 | ||
48 | struct s5m_voltage_desc { | |
49 | int max; | |
50 | int min; | |
51 | int step; | |
52 | }; | |
53 | ||
54 | static const struct s5m_voltage_desc buck_voltage_val1 = { | |
55 | .max = 2225000, | |
56 | .min = 650000, | |
57 | .step = 6250, | |
58 | }; | |
59 | ||
60 | static const struct s5m_voltage_desc buck_voltage_val2 = { | |
61 | .max = 1600000, | |
62 | .min = 600000, | |
63 | .step = 6250, | |
64 | }; | |
65 | ||
66 | static const struct s5m_voltage_desc buck_voltage_val3 = { | |
67 | .max = 3000000, | |
68 | .min = 750000, | |
69 | .step = 12500, | |
70 | }; | |
71 | ||
72 | static const struct s5m_voltage_desc ldo_voltage_val1 = { | |
73 | .max = 3950000, | |
74 | .min = 800000, | |
75 | .step = 50000, | |
76 | }; | |
77 | ||
78 | static const struct s5m_voltage_desc ldo_voltage_val2 = { | |
79 | .max = 2375000, | |
80 | .min = 800000, | |
81 | .step = 25000, | |
82 | }; | |
83 | ||
84 | static const struct s5m_voltage_desc *reg_voltage_map[] = { | |
85 | [S5M8767_LDO1] = &ldo_voltage_val2, | |
86 | [S5M8767_LDO2] = &ldo_voltage_val2, | |
87 | [S5M8767_LDO3] = &ldo_voltage_val1, | |
88 | [S5M8767_LDO4] = &ldo_voltage_val1, | |
89 | [S5M8767_LDO5] = &ldo_voltage_val1, | |
90 | [S5M8767_LDO6] = &ldo_voltage_val2, | |
91 | [S5M8767_LDO7] = &ldo_voltage_val2, | |
92 | [S5M8767_LDO8] = &ldo_voltage_val2, | |
93 | [S5M8767_LDO9] = &ldo_voltage_val1, | |
94 | [S5M8767_LDO10] = &ldo_voltage_val1, | |
95 | [S5M8767_LDO11] = &ldo_voltage_val1, | |
96 | [S5M8767_LDO12] = &ldo_voltage_val1, | |
97 | [S5M8767_LDO13] = &ldo_voltage_val1, | |
98 | [S5M8767_LDO14] = &ldo_voltage_val1, | |
99 | [S5M8767_LDO15] = &ldo_voltage_val2, | |
100 | [S5M8767_LDO16] = &ldo_voltage_val1, | |
101 | [S5M8767_LDO17] = &ldo_voltage_val1, | |
102 | [S5M8767_LDO18] = &ldo_voltage_val1, | |
103 | [S5M8767_LDO19] = &ldo_voltage_val1, | |
104 | [S5M8767_LDO20] = &ldo_voltage_val1, | |
105 | [S5M8767_LDO21] = &ldo_voltage_val1, | |
106 | [S5M8767_LDO22] = &ldo_voltage_val1, | |
107 | [S5M8767_LDO23] = &ldo_voltage_val1, | |
108 | [S5M8767_LDO24] = &ldo_voltage_val1, | |
109 | [S5M8767_LDO25] = &ldo_voltage_val1, | |
110 | [S5M8767_LDO26] = &ldo_voltage_val1, | |
111 | [S5M8767_LDO27] = &ldo_voltage_val1, | |
112 | [S5M8767_LDO28] = &ldo_voltage_val1, | |
113 | [S5M8767_BUCK1] = &buck_voltage_val1, | |
114 | [S5M8767_BUCK2] = &buck_voltage_val2, | |
115 | [S5M8767_BUCK3] = &buck_voltage_val2, | |
116 | [S5M8767_BUCK4] = &buck_voltage_val2, | |
117 | [S5M8767_BUCK5] = &buck_voltage_val1, | |
118 | [S5M8767_BUCK6] = &buck_voltage_val1, | |
119 | [S5M8767_BUCK7] = NULL, | |
120 | [S5M8767_BUCK8] = NULL, | |
121 | [S5M8767_BUCK9] = &buck_voltage_val3, | |
122 | }; | |
123 | ||
9767ec7f SK |
124 | static int s5m8767_list_voltage(struct regulator_dev *rdev, |
125 | unsigned int selector) | |
126 | { | |
127 | const struct s5m_voltage_desc *desc; | |
20a14b84 | 128 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
129 | int val; |
130 | ||
131 | if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0) | |
132 | return -EINVAL; | |
133 | ||
134 | desc = reg_voltage_map[reg_id]; | |
135 | if (desc == NULL) | |
136 | return -EINVAL; | |
137 | ||
138 | val = desc->min + desc->step * selector; | |
139 | if (val > desc->max) | |
140 | return -EINVAL; | |
141 | ||
142 | return val; | |
143 | } | |
144 | ||
7e44bb83 SK |
145 | unsigned int s5m8767_opmode_reg[][4] = { |
146 | /* {OFF, ON, LOWPOWER, SUSPEND} */ | |
147 | /* LDO1 ... LDO28 */ | |
148 | {0x0, 0x3, 0x2, 0x1}, /* LDO1 */ | |
149 | {0x0, 0x3, 0x2, 0x1}, | |
150 | {0x0, 0x3, 0x2, 0x1}, | |
151 | {0x0, 0x0, 0x0, 0x0}, | |
152 | {0x0, 0x3, 0x2, 0x1}, /* LDO5 */ | |
153 | {0x0, 0x3, 0x2, 0x1}, | |
154 | {0x0, 0x3, 0x2, 0x1}, | |
155 | {0x0, 0x3, 0x2, 0x1}, | |
156 | {0x0, 0x3, 0x2, 0x1}, | |
157 | {0x0, 0x3, 0x2, 0x1}, /* LDO10 */ | |
158 | {0x0, 0x3, 0x2, 0x1}, | |
159 | {0x0, 0x3, 0x2, 0x1}, | |
160 | {0x0, 0x3, 0x2, 0x1}, | |
161 | {0x0, 0x3, 0x2, 0x1}, | |
162 | {0x0, 0x3, 0x2, 0x1}, /* LDO15 */ | |
163 | {0x0, 0x3, 0x2, 0x1}, | |
164 | {0x0, 0x3, 0x2, 0x1}, | |
165 | {0x0, 0x0, 0x0, 0x0}, | |
166 | {0x0, 0x3, 0x2, 0x1}, | |
167 | {0x0, 0x3, 0x2, 0x1}, /* LDO20 */ | |
168 | {0x0, 0x3, 0x2, 0x1}, | |
169 | {0x0, 0x3, 0x2, 0x1}, | |
170 | {0x0, 0x0, 0x0, 0x0}, | |
171 | {0x0, 0x3, 0x2, 0x1}, | |
172 | {0x0, 0x3, 0x2, 0x1}, /* LDO25 */ | |
173 | {0x0, 0x3, 0x2, 0x1}, | |
174 | {0x0, 0x3, 0x2, 0x1}, | |
175 | {0x0, 0x3, 0x2, 0x1}, /* LDO28 */ | |
176 | ||
177 | /* BUCK1 ... BUCK9 */ | |
178 | {0x0, 0x3, 0x1, 0x1}, /* BUCK1 */ | |
179 | {0x0, 0x3, 0x1, 0x1}, | |
180 | {0x0, 0x3, 0x1, 0x1}, | |
181 | {0x0, 0x3, 0x1, 0x1}, | |
182 | {0x0, 0x3, 0x2, 0x1}, /* BUCK5 */ | |
183 | {0x0, 0x3, 0x1, 0x1}, | |
184 | {0x0, 0x3, 0x1, 0x1}, | |
185 | {0x0, 0x3, 0x1, 0x1}, | |
186 | {0x0, 0x3, 0x1, 0x1}, /* BUCK9 */ | |
187 | }; | |
188 | ||
189 | static int s5m8767_get_register(struct regulator_dev *rdev, int *reg, | |
190 | int *enable_ctrl) | |
9767ec7f | 191 | { |
20a14b84 | 192 | int reg_id = rdev_get_id(rdev); |
7e44bb83 SK |
193 | unsigned int mode; |
194 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
9767ec7f SK |
195 | |
196 | switch (reg_id) { | |
197 | case S5M8767_LDO1 ... S5M8767_LDO2: | |
198 | *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); | |
199 | break; | |
200 | case S5M8767_LDO3 ... S5M8767_LDO28: | |
201 | *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); | |
202 | break; | |
203 | case S5M8767_BUCK1: | |
204 | *reg = S5M8767_REG_BUCK1CTRL1; | |
205 | break; | |
206 | case S5M8767_BUCK2 ... S5M8767_BUCK4: | |
207 | *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9; | |
208 | break; | |
209 | case S5M8767_BUCK5: | |
210 | *reg = S5M8767_REG_BUCK5CTRL1; | |
211 | break; | |
212 | case S5M8767_BUCK6 ... S5M8767_BUCK9: | |
213 | *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2; | |
214 | break; | |
215 | default: | |
216 | return -EINVAL; | |
217 | } | |
218 | ||
7e44bb83 SK |
219 | mode = s5m8767->opmode[reg_id].mode; |
220 | *enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT; | |
9767ec7f SK |
221 | return 0; |
222 | } | |
223 | ||
224 | static int s5m8767_reg_is_enabled(struct regulator_dev *rdev) | |
225 | { | |
226 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
227 | int ret, reg; | |
7e44bb83 | 228 | int mask = 0xc0, enable_ctrl; |
9767ec7f SK |
229 | u8 val; |
230 | ||
7e44bb83 | 231 | ret = s5m8767_get_register(rdev, ®, &enable_ctrl); |
9767ec7f SK |
232 | if (ret == -EINVAL) |
233 | return 1; | |
234 | else if (ret) | |
235 | return ret; | |
236 | ||
237 | ret = s5m_reg_read(s5m8767->iodev, reg, &val); | |
238 | if (ret) | |
239 | return ret; | |
240 | ||
7e44bb83 | 241 | return (val & mask) == enable_ctrl; |
9767ec7f SK |
242 | } |
243 | ||
244 | static int s5m8767_reg_enable(struct regulator_dev *rdev) | |
245 | { | |
246 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
247 | int ret, reg; | |
7e44bb83 | 248 | int mask = 0xc0, enable_ctrl; |
9767ec7f | 249 | |
7e44bb83 | 250 | ret = s5m8767_get_register(rdev, ®, &enable_ctrl); |
9767ec7f SK |
251 | if (ret) |
252 | return ret; | |
253 | ||
7e44bb83 | 254 | return s5m_reg_update(s5m8767->iodev, reg, enable_ctrl, mask); |
9767ec7f SK |
255 | } |
256 | ||
257 | static int s5m8767_reg_disable(struct regulator_dev *rdev) | |
258 | { | |
259 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
260 | int ret, reg; | |
7e44bb83 | 261 | int mask = 0xc0, enable_ctrl; |
9767ec7f | 262 | |
7e44bb83 | 263 | ret = s5m8767_get_register(rdev, ®, &enable_ctrl); |
9767ec7f SK |
264 | if (ret) |
265 | return ret; | |
266 | ||
7e44bb83 | 267 | return s5m_reg_update(s5m8767->iodev, reg, ~mask, mask); |
9767ec7f SK |
268 | } |
269 | ||
270 | static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg) | |
271 | { | |
0a41685f | 272 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); |
20a14b84 | 273 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
274 | int reg; |
275 | ||
276 | switch (reg_id) { | |
277 | case S5M8767_LDO1 ... S5M8767_LDO2: | |
278 | reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); | |
279 | break; | |
280 | case S5M8767_LDO3 ... S5M8767_LDO28: | |
281 | reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); | |
282 | break; | |
283 | case S5M8767_BUCK1: | |
284 | reg = S5M8767_REG_BUCK1CTRL2; | |
285 | break; | |
286 | case S5M8767_BUCK2: | |
287 | reg = S5M8767_REG_BUCK2DVS1; | |
0a41685f AL |
288 | if (s5m8767->buck2_gpiodvs) |
289 | reg += s5m8767->buck_gpioindex; | |
9767ec7f SK |
290 | break; |
291 | case S5M8767_BUCK3: | |
292 | reg = S5M8767_REG_BUCK3DVS1; | |
0a41685f AL |
293 | if (s5m8767->buck3_gpiodvs) |
294 | reg += s5m8767->buck_gpioindex; | |
9767ec7f SK |
295 | break; |
296 | case S5M8767_BUCK4: | |
297 | reg = S5M8767_REG_BUCK4DVS1; | |
0a41685f AL |
298 | if (s5m8767->buck4_gpiodvs) |
299 | reg += s5m8767->buck_gpioindex; | |
9767ec7f SK |
300 | break; |
301 | case S5M8767_BUCK5: | |
302 | reg = S5M8767_REG_BUCK5CTRL2; | |
303 | break; | |
304 | case S5M8767_BUCK6 ... S5M8767_BUCK9: | |
305 | reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2; | |
306 | break; | |
307 | default: | |
308 | return -EINVAL; | |
309 | } | |
310 | ||
311 | *_reg = reg; | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | static int s5m8767_get_voltage_sel(struct regulator_dev *rdev) | |
317 | { | |
318 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
0a41685f | 319 | int reg, mask, ret; |
20a14b84 | 320 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
321 | u8 val; |
322 | ||
323 | ret = s5m8767_get_voltage_register(rdev, ®); | |
324 | if (ret) | |
325 | return ret; | |
326 | ||
0a41685f | 327 | mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff; |
9767ec7f SK |
328 | |
329 | ret = s5m_reg_read(s5m8767->iodev, reg, &val); | |
330 | if (ret) | |
331 | return ret; | |
332 | ||
333 | val &= mask; | |
334 | ||
335 | return val; | |
336 | } | |
337 | ||
5b5e977c | 338 | static int s5m8767_convert_voltage_to_sel( |
9767ec7f SK |
339 | const struct s5m_voltage_desc *desc, |
340 | int min_vol, int max_vol) | |
341 | { | |
5b5e977c | 342 | int selector = 0; |
9767ec7f SK |
343 | |
344 | if (desc == NULL) | |
345 | return -EINVAL; | |
346 | ||
347 | if (max_vol < desc->min || min_vol > desc->max) | |
348 | return -EINVAL; | |
349 | ||
5b5e977c | 350 | selector = (min_vol - desc->min) / desc->step; |
9767ec7f | 351 | |
5b5e977c | 352 | if (desc->min + desc->step * selector > max_vol) |
9767ec7f SK |
353 | return -EINVAL; |
354 | ||
5b5e977c | 355 | return selector; |
9767ec7f SK |
356 | } |
357 | ||
358 | static int s5m8767_set_voltage(struct regulator_dev *rdev, | |
359 | int min_uV, int max_uV, unsigned *selector) | |
360 | { | |
361 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
9767ec7f | 362 | const struct s5m_voltage_desc *desc; |
20a14b84 | 363 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
364 | int reg, mask, ret; |
365 | int i; | |
366 | u8 val; | |
367 | ||
368 | switch (reg_id) { | |
369 | case S5M8767_LDO1 ... S5M8767_LDO28: | |
370 | mask = 0x3f; | |
371 | break; | |
372 | case S5M8767_BUCK1 ... S5M8767_BUCK6: | |
373 | mask = 0xff; | |
374 | break; | |
375 | case S5M8767_BUCK7 ... S5M8767_BUCK8: | |
376 | return -EINVAL; | |
377 | case S5M8767_BUCK9: | |
378 | mask = 0xff; | |
379 | break; | |
380 | default: | |
381 | return -EINVAL; | |
382 | } | |
383 | ||
384 | desc = reg_voltage_map[reg_id]; | |
385 | ||
5b5e977c | 386 | i = s5m8767_convert_voltage_to_sel(desc, min_uV, max_uV); |
9767ec7f SK |
387 | if (i < 0) |
388 | return i; | |
389 | ||
390 | ret = s5m8767_get_voltage_register(rdev, ®); | |
391 | if (ret) | |
392 | return ret; | |
393 | ||
394 | s5m_reg_read(s5m8767->iodev, reg, &val); | |
395 | val = val & mask; | |
396 | ||
397 | ret = s5m_reg_write(s5m8767->iodev, reg, val); | |
398 | *selector = i; | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
403 | static inline void s5m8767_set_high(struct s5m8767_info *s5m8767) | |
404 | { | |
405 | int temp_index = s5m8767->buck_gpioindex; | |
406 | ||
407 | gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); | |
408 | gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); | |
409 | gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); | |
410 | } | |
411 | ||
412 | static inline void s5m8767_set_low(struct s5m8767_info *s5m8767) | |
413 | { | |
414 | int temp_index = s5m8767->buck_gpioindex; | |
415 | ||
416 | gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); | |
417 | gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); | |
418 | gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); | |
419 | } | |
420 | ||
421 | static int s5m8767_set_voltage_buck(struct regulator_dev *rdev, | |
422 | int min_uV, int max_uV, unsigned *selector) | |
423 | { | |
424 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
20a14b84 | 425 | int reg_id = rdev_get_id(rdev); |
9767ec7f SK |
426 | const struct s5m_voltage_desc *desc; |
427 | int new_val, old_val, i = 0; | |
9767ec7f SK |
428 | |
429 | if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6) | |
430 | return -EINVAL; | |
431 | ||
432 | switch (reg_id) { | |
433 | case S5M8767_BUCK1: | |
434 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
435 | case S5M8767_BUCK2 ... S5M8767_BUCK4: | |
436 | break; | |
437 | case S5M8767_BUCK5 ... S5M8767_BUCK6: | |
438 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
439 | case S5M8767_BUCK9: | |
440 | return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); | |
441 | } | |
442 | ||
443 | desc = reg_voltage_map[reg_id]; | |
5b5e977c | 444 | new_val = s5m8767_convert_voltage_to_sel(desc, min_uV, max_uV); |
9767ec7f SK |
445 | if (new_val < 0) |
446 | return new_val; | |
447 | ||
448 | switch (reg_id) { | |
449 | case S5M8767_BUCK2: | |
450 | if (s5m8767->buck2_gpiodvs) { | |
451 | while (s5m8767->buck2_vol[i] != new_val) | |
452 | i++; | |
453 | } else | |
454 | return s5m8767_set_voltage(rdev, min_uV, | |
455 | max_uV, selector); | |
456 | break; | |
457 | case S5M8767_BUCK3: | |
458 | if (s5m8767->buck3_gpiodvs) { | |
459 | while (s5m8767->buck3_vol[i] != new_val) | |
460 | i++; | |
461 | } else | |
462 | return s5m8767_set_voltage(rdev, min_uV, | |
463 | max_uV, selector); | |
464 | break; | |
465 | case S5M8767_BUCK4: | |
466 | if (s5m8767->buck3_gpiodvs) { | |
467 | while (s5m8767->buck4_vol[i] != new_val) | |
468 | i++; | |
469 | } else | |
470 | return s5m8767_set_voltage(rdev, min_uV, | |
471 | max_uV, selector); | |
472 | break; | |
473 | } | |
474 | ||
475 | old_val = s5m8767->buck_gpioindex; | |
476 | s5m8767->buck_gpioindex = i; | |
477 | ||
478 | if (i > old_val) | |
479 | s5m8767_set_high(s5m8767); | |
480 | else | |
481 | s5m8767_set_low(s5m8767); | |
482 | ||
483 | *selector = new_val; | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev, | |
488 | unsigned int old_sel, | |
489 | unsigned int new_sel) | |
490 | { | |
491 | struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); | |
492 | const struct s5m_voltage_desc *desc; | |
20a14b84 | 493 | int reg_id = rdev_get_id(rdev); |
9767ec7f | 494 | |
9767ec7f SK |
495 | desc = reg_voltage_map[reg_id]; |
496 | ||
9767ec7f | 497 | if (old_sel < new_sel) |
89e0f0e4 | 498 | return DIV_ROUND_UP(desc->step * (new_sel - old_sel), |
0f8b9c77 | 499 | s5m8767->ramp_delay * 1000); |
89e0f0e4 | 500 | return 0; |
9767ec7f SK |
501 | } |
502 | ||
503 | static struct regulator_ops s5m8767_ldo_ops = { | |
504 | .list_voltage = s5m8767_list_voltage, | |
505 | .is_enabled = s5m8767_reg_is_enabled, | |
506 | .enable = s5m8767_reg_enable, | |
507 | .disable = s5m8767_reg_disable, | |
508 | .get_voltage_sel = s5m8767_get_voltage_sel, | |
509 | .set_voltage = s5m8767_set_voltage, | |
510 | .set_voltage_time_sel = s5m8767_set_voltage_time_sel, | |
511 | }; | |
512 | ||
513 | static struct regulator_ops s5m8767_buck_ops = { | |
514 | .list_voltage = s5m8767_list_voltage, | |
515 | .is_enabled = s5m8767_reg_is_enabled, | |
516 | .enable = s5m8767_reg_enable, | |
517 | .disable = s5m8767_reg_disable, | |
518 | .get_voltage_sel = s5m8767_get_voltage_sel, | |
519 | .set_voltage = s5m8767_set_voltage_buck, | |
520 | .set_voltage_time_sel = s5m8767_set_voltage_time_sel, | |
521 | }; | |
522 | ||
523 | #define regulator_desc_ldo(num) { \ | |
524 | .name = "LDO"#num, \ | |
525 | .id = S5M8767_LDO##num, \ | |
526 | .ops = &s5m8767_ldo_ops, \ | |
527 | .type = REGULATOR_VOLTAGE, \ | |
528 | .owner = THIS_MODULE, \ | |
529 | } | |
530 | #define regulator_desc_buck(num) { \ | |
531 | .name = "BUCK"#num, \ | |
532 | .id = S5M8767_BUCK##num, \ | |
533 | .ops = &s5m8767_buck_ops, \ | |
534 | .type = REGULATOR_VOLTAGE, \ | |
535 | .owner = THIS_MODULE, \ | |
536 | } | |
537 | ||
538 | static struct regulator_desc regulators[] = { | |
539 | regulator_desc_ldo(1), | |
540 | regulator_desc_ldo(2), | |
541 | regulator_desc_ldo(3), | |
542 | regulator_desc_ldo(4), | |
543 | regulator_desc_ldo(5), | |
544 | regulator_desc_ldo(6), | |
545 | regulator_desc_ldo(7), | |
546 | regulator_desc_ldo(8), | |
547 | regulator_desc_ldo(9), | |
548 | regulator_desc_ldo(10), | |
549 | regulator_desc_ldo(11), | |
550 | regulator_desc_ldo(12), | |
551 | regulator_desc_ldo(13), | |
552 | regulator_desc_ldo(14), | |
553 | regulator_desc_ldo(15), | |
554 | regulator_desc_ldo(16), | |
555 | regulator_desc_ldo(17), | |
556 | regulator_desc_ldo(18), | |
557 | regulator_desc_ldo(19), | |
558 | regulator_desc_ldo(20), | |
559 | regulator_desc_ldo(21), | |
560 | regulator_desc_ldo(22), | |
561 | regulator_desc_ldo(23), | |
562 | regulator_desc_ldo(24), | |
563 | regulator_desc_ldo(25), | |
564 | regulator_desc_ldo(26), | |
565 | regulator_desc_ldo(27), | |
566 | regulator_desc_ldo(28), | |
567 | regulator_desc_buck(1), | |
568 | regulator_desc_buck(2), | |
569 | regulator_desc_buck(3), | |
570 | regulator_desc_buck(4), | |
571 | regulator_desc_buck(5), | |
572 | regulator_desc_buck(6), | |
573 | regulator_desc_buck(7), | |
574 | regulator_desc_buck(8), | |
575 | regulator_desc_buck(9), | |
576 | }; | |
577 | ||
578 | static __devinit int s5m8767_pmic_probe(struct platform_device *pdev) | |
579 | { | |
580 | struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
581 | struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev); | |
582 | struct regulator_dev **rdev; | |
583 | struct s5m8767_info *s5m8767; | |
22cd2fef | 584 | int i, ret, size; |
9767ec7f SK |
585 | |
586 | if (!pdata) { | |
587 | dev_err(pdev->dev.parent, "Platform data not supplied\n"); | |
588 | return -ENODEV; | |
589 | } | |
590 | ||
6c4efe24 AL |
591 | if (pdata->buck2_gpiodvs) { |
592 | if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) { | |
593 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
594 | return -EINVAL; | |
595 | } | |
596 | } | |
597 | ||
598 | if (pdata->buck3_gpiodvs) { | |
599 | if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) { | |
600 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
601 | return -EINVAL; | |
602 | } | |
603 | } | |
604 | ||
605 | if (pdata->buck4_gpiodvs) { | |
606 | if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) { | |
607 | dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); | |
608 | return -EINVAL; | |
609 | } | |
610 | } | |
611 | ||
9767ec7f SK |
612 | s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info), |
613 | GFP_KERNEL); | |
614 | if (!s5m8767) | |
615 | return -ENOMEM; | |
616 | ||
617 | size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2); | |
618 | s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); | |
619 | if (!s5m8767->rdev) | |
620 | return -ENOMEM; | |
621 | ||
622 | rdev = s5m8767->rdev; | |
623 | s5m8767->dev = &pdev->dev; | |
624 | s5m8767->iodev = iodev; | |
625 | s5m8767->num_regulators = S5M8767_REG_MAX - 2; | |
626 | platform_set_drvdata(pdev, s5m8767); | |
9767ec7f SK |
627 | |
628 | s5m8767->buck_gpioindex = pdata->buck_default_idx; | |
629 | s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs; | |
630 | s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs; | |
631 | s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs; | |
632 | s5m8767->buck_gpios[0] = pdata->buck_gpios[0]; | |
633 | s5m8767->buck_gpios[1] = pdata->buck_gpios[1]; | |
634 | s5m8767->buck_gpios[2] = pdata->buck_gpios[2]; | |
635 | s5m8767->ramp_delay = pdata->buck_ramp_delay; | |
636 | s5m8767->buck2_ramp = pdata->buck2_ramp_enable; | |
637 | s5m8767->buck3_ramp = pdata->buck3_ramp_enable; | |
638 | s5m8767->buck4_ramp = pdata->buck4_ramp_enable; | |
7e44bb83 | 639 | s5m8767->opmode = pdata->opmode; |
9767ec7f SK |
640 | |
641 | for (i = 0; i < 8; i++) { | |
642 | if (s5m8767->buck2_gpiodvs) { | |
643 | s5m8767->buck2_vol[i] = | |
5b5e977c | 644 | s5m8767_convert_voltage_to_sel( |
9767ec7f SK |
645 | &buck_voltage_val2, |
646 | pdata->buck2_voltage[i], | |
647 | pdata->buck2_voltage[i] + | |
648 | buck_voltage_val2.step); | |
649 | } | |
650 | ||
651 | if (s5m8767->buck3_gpiodvs) { | |
652 | s5m8767->buck3_vol[i] = | |
5b5e977c | 653 | s5m8767_convert_voltage_to_sel( |
9767ec7f SK |
654 | &buck_voltage_val2, |
655 | pdata->buck3_voltage[i], | |
656 | pdata->buck3_voltage[i] + | |
657 | buck_voltage_val2.step); | |
658 | } | |
659 | ||
660 | if (s5m8767->buck4_gpiodvs) { | |
661 | s5m8767->buck4_vol[i] = | |
5b5e977c | 662 | s5m8767_convert_voltage_to_sel( |
9767ec7f SK |
663 | &buck_voltage_val2, |
664 | pdata->buck4_voltage[i], | |
665 | pdata->buck4_voltage[i] + | |
666 | buck_voltage_val2.step); | |
667 | } | |
668 | } | |
669 | ||
670 | if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs || | |
671 | pdata->buck4_gpiodvs) { | |
672 | if (gpio_is_valid(pdata->buck_gpios[0]) && | |
673 | gpio_is_valid(pdata->buck_gpios[1]) && | |
674 | gpio_is_valid(pdata->buck_gpios[2])) { | |
675 | ret = gpio_request(pdata->buck_gpios[0], | |
676 | "S5M8767 SET1"); | |
677 | if (ret == -EBUSY) | |
678 | dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n"); | |
679 | ||
680 | ret = gpio_request(pdata->buck_gpios[1], | |
681 | "S5M8767 SET2"); | |
682 | if (ret == -EBUSY) | |
683 | dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n"); | |
684 | ||
685 | ret = gpio_request(pdata->buck_gpios[2], | |
686 | "S5M8767 SET3"); | |
687 | if (ret == -EBUSY) | |
688 | dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n"); | |
689 | /* SET1 GPIO */ | |
690 | gpio_direction_output(pdata->buck_gpios[0], | |
691 | (s5m8767->buck_gpioindex >> 2) & 0x1); | |
692 | /* SET2 GPIO */ | |
693 | gpio_direction_output(pdata->buck_gpios[1], | |
694 | (s5m8767->buck_gpioindex >> 1) & 0x1); | |
695 | /* SET3 GPIO */ | |
696 | gpio_direction_output(pdata->buck_gpios[2], | |
697 | (s5m8767->buck_gpioindex >> 0) & 0x1); | |
698 | ret = 0; | |
699 | } else { | |
700 | dev_err(&pdev->dev, "GPIO NOT VALID\n"); | |
701 | ret = -EINVAL; | |
702 | return ret; | |
703 | } | |
704 | } | |
705 | ||
9767ec7f SK |
706 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, |
707 | (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
708 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, | |
709 | (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
710 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, | |
711 | (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); | |
712 | ||
713 | /* Initialize GPIO DVS registers */ | |
714 | for (i = 0; i < 8; i++) { | |
715 | if (s5m8767->buck2_gpiodvs) { | |
716 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i, | |
717 | s5m8767->buck2_vol[i]); | |
718 | } | |
719 | ||
720 | if (s5m8767->buck3_gpiodvs) { | |
721 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i, | |
722 | s5m8767->buck3_vol[i]); | |
723 | } | |
724 | ||
725 | if (s5m8767->buck4_gpiodvs) { | |
726 | s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i, | |
727 | s5m8767->buck4_vol[i]); | |
728 | } | |
729 | } | |
730 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff); | |
731 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff); | |
732 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff); | |
733 | ||
734 | if (s5m8767->buck2_ramp) | |
735 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08); | |
736 | ||
737 | if (s5m8767->buck3_ramp) | |
738 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04); | |
739 | ||
740 | if (s5m8767->buck4_ramp) | |
741 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02); | |
742 | ||
743 | if (s5m8767->buck2_ramp || s5m8767->buck3_ramp | |
744 | || s5m8767->buck4_ramp) { | |
745 | switch (s5m8767->ramp_delay) { | |
746 | case 15: | |
747 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
748 | 0xc0, 0xf0); | |
047ec220 | 749 | break; |
9767ec7f SK |
750 | case 25: |
751 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
752 | 0xd0, 0xf0); | |
047ec220 | 753 | break; |
9767ec7f SK |
754 | case 50: |
755 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
756 | 0xe0, 0xf0); | |
047ec220 | 757 | break; |
9767ec7f SK |
758 | case 100: |
759 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
760 | 0xf0, 0xf0); | |
047ec220 | 761 | break; |
9767ec7f SK |
762 | default: |
763 | s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, | |
764 | 0x90, 0xf0); | |
765 | } | |
766 | } | |
767 | ||
768 | for (i = 0; i < pdata->num_regulators; i++) { | |
769 | const struct s5m_voltage_desc *desc; | |
770 | int id = pdata->regulators[i].id; | |
771 | ||
772 | desc = reg_voltage_map[id]; | |
773 | if (desc) | |
774 | regulators[id].n_voltages = | |
775 | (desc->max - desc->min) / desc->step + 1; | |
776 | ||
777 | rdev[i] = regulator_register(®ulators[id], s5m8767->dev, | |
0ce69873 | 778 | pdata->regulators[i].initdata, s5m8767, NULL); |
9767ec7f SK |
779 | if (IS_ERR(rdev[i])) { |
780 | ret = PTR_ERR(rdev[i]); | |
781 | dev_err(s5m8767->dev, "regulator init failed for %d\n", | |
782 | id); | |
783 | rdev[i] = NULL; | |
784 | goto err; | |
785 | } | |
786 | } | |
787 | ||
788 | return 0; | |
789 | err: | |
790 | for (i = 0; i < s5m8767->num_regulators; i++) | |
791 | if (rdev[i]) | |
792 | regulator_unregister(rdev[i]); | |
793 | ||
794 | return ret; | |
795 | } | |
796 | ||
797 | static int __devexit s5m8767_pmic_remove(struct platform_device *pdev) | |
798 | { | |
799 | struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev); | |
800 | struct regulator_dev **rdev = s5m8767->rdev; | |
801 | int i; | |
802 | ||
803 | for (i = 0; i < s5m8767->num_regulators; i++) | |
804 | if (rdev[i]) | |
805 | regulator_unregister(rdev[i]); | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | static const struct platform_device_id s5m8767_pmic_id[] = { | |
811 | { "s5m8767-pmic", 0}, | |
812 | { }, | |
813 | }; | |
814 | MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id); | |
815 | ||
816 | static struct platform_driver s5m8767_pmic_driver = { | |
817 | .driver = { | |
818 | .name = "s5m8767-pmic", | |
819 | .owner = THIS_MODULE, | |
820 | }, | |
821 | .probe = s5m8767_pmic_probe, | |
822 | .remove = __devexit_p(s5m8767_pmic_remove), | |
823 | .id_table = s5m8767_pmic_id, | |
824 | }; | |
825 | ||
826 | static int __init s5m8767_pmic_init(void) | |
827 | { | |
828 | return platform_driver_register(&s5m8767_pmic_driver); | |
829 | } | |
830 | subsys_initcall(s5m8767_pmic_init); | |
831 | ||
832 | static void __exit s5m8767_pmic_exit(void) | |
833 | { | |
834 | platform_driver_unregister(&s5m8767_pmic_driver); | |
835 | } | |
836 | module_exit(s5m8767_pmic_exit); | |
837 | ||
838 | /* Module information */ | |
839 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
840 | MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver"); | |
841 | MODULE_LICENSE("GPL"); |