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e6f2f805 JMC |
1 | /* |
2 | * max77802.c - Regulator driver for the Maxim 77802 | |
3 | * | |
4 | * Copyright (C) 2013-2014 Google, Inc | |
5 | * Simon Glass <sjg@chromium.org> | |
6 | * | |
7 | * Copyright (C) 2012 Samsung Electronics | |
8 | * Chiwoong Byun <woong.byun@smasung.com> | |
9 | * Jonghwa Lee <jonghwa3.lee@samsung.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * This driver is based on max8997.c | |
22 | */ | |
23 | ||
24 | #include <linux/kernel.h> | |
25 | #include <linux/bug.h> | |
26 | #include <linux/err.h> | |
27 | #include <linux/gpio.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/gpio/consumer.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/regulator/driver.h> | |
32 | #include <linux/regulator/machine.h> | |
33 | #include <linux/regulator/of_regulator.h> | |
34 | #include <linux/mfd/max77686.h> | |
35 | #include <linux/mfd/max77686-private.h> | |
5356e0da | 36 | #include <dt-bindings/regulator/maxim,max77802.h> |
e6f2f805 JMC |
37 | |
38 | /* Default ramp delay in case it is not manually set */ | |
39 | #define MAX77802_RAMP_DELAY 100000 /* uV/us */ | |
40 | ||
41 | #define MAX77802_OPMODE_SHIFT_LDO 6 | |
42 | #define MAX77802_OPMODE_BUCK234_SHIFT 4 | |
43 | #define MAX77802_OPMODE_MASK 0x3 | |
44 | ||
45 | #define MAX77802_VSEL_MASK 0x3F | |
46 | #define MAX77802_DVS_VSEL_MASK 0xFF | |
47 | ||
48 | #define MAX77802_RAMP_RATE_MASK_2BIT 0xC0 | |
49 | #define MAX77802_RAMP_RATE_SHIFT_2BIT 6 | |
50 | #define MAX77802_RAMP_RATE_MASK_4BIT 0xF0 | |
51 | #define MAX77802_RAMP_RATE_SHIFT_4BIT 4 | |
52 | ||
0505be71 | 53 | #define MAX77802_STATUS_OFF 0x0 |
e6fb2aac | 54 | #define MAX77802_OFF_PWRREQ 0x1 |
2e0eaa1a | 55 | #define MAX77802_LP_PWRREQ 0x2 |
e6fb2aac | 56 | |
e6f2f805 JMC |
57 | /* MAX77802 has two register formats: 2-bit and 4-bit */ |
58 | static const unsigned int ramp_table_77802_2bit[] = { | |
59 | 12500, | |
60 | 25000, | |
61 | 50000, | |
62 | 100000, | |
63 | }; | |
64 | ||
65 | static unsigned int ramp_table_77802_4bit[] = { | |
66 | 1000, 2000, 3030, 4000, | |
67 | 5000, 5880, 7140, 8330, | |
68 | 9090, 10000, 11110, 12500, | |
69 | 16670, 25000, 50000, 100000, | |
70 | }; | |
71 | ||
72 | struct max77802_regulator_prv { | |
ff633bea | 73 | /* Array indexed by regulator id */ |
e6f2f805 JMC |
74 | unsigned int opmode[MAX77802_REG_MAX]; |
75 | }; | |
76 | ||
4d7078e6 | 77 | static inline unsigned int max77802_map_mode(unsigned int mode) |
efbe5199 JMC |
78 | { |
79 | return mode == MAX77802_OPMODE_NORMAL ? | |
80 | REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; | |
81 | } | |
82 | ||
e6f2f805 JMC |
83 | static int max77802_get_opmode_shift(int id) |
84 | { | |
85 | if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && | |
86 | id <= MAX77802_BUCK10)) | |
87 | return 0; | |
88 | ||
89 | if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) | |
90 | return MAX77802_OPMODE_BUCK234_SHIFT; | |
91 | ||
92 | if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) | |
93 | return MAX77802_OPMODE_SHIFT_LDO; | |
94 | ||
95 | return -EINVAL; | |
96 | } | |
97 | ||
e6fb2aac JMC |
98 | /** |
99 | * max77802_set_suspend_disable - Disable the regulator during system suspend | |
100 | * @rdev: regulator to mark as disabled | |
e6f2f805 | 101 | * |
e6fb2aac JMC |
102 | * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. |
103 | * Configure the regulator so the PMIC will turn it OFF during system suspend. | |
e6f2f805 | 104 | */ |
e6fb2aac | 105 | static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
e6f2f805 | 106 | { |
e6fb2aac | 107 | unsigned int val = MAX77802_OFF_PWRREQ; |
e6f2f805 JMC |
108 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
109 | int id = rdev_get_id(rdev); | |
110 | int shift = max77802_get_opmode_shift(id); | |
111 | ||
112 | max77802->opmode[id] = val; | |
113 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
114 | rdev->desc->enable_mask, val << shift); | |
115 | } | |
116 | ||
efbe5199 JMC |
117 | /* |
118 | * Some LDOs support Low Power Mode while the system is running. | |
119 | * | |
120 | * LDOs 1, 3, 20, 21. | |
121 | */ | |
122 | static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
123 | { | |
124 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
125 | int id = rdev_get_id(rdev); | |
126 | unsigned int val; | |
127 | int shift = max77802_get_opmode_shift(id); | |
128 | ||
129 | switch (mode) { | |
130 | case REGULATOR_MODE_STANDBY: | |
131 | val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ | |
132 | break; | |
133 | case REGULATOR_MODE_NORMAL: | |
134 | val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ | |
135 | break; | |
136 | default: | |
137 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
138 | rdev->desc->name, mode); | |
139 | return -EINVAL; | |
140 | } | |
141 | ||
142 | max77802->opmode[id] = val; | |
143 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
144 | rdev->desc->enable_mask, val << shift); | |
145 | } | |
146 | ||
147 | static unsigned max77802_get_mode(struct regulator_dev *rdev) | |
148 | { | |
149 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
150 | int id = rdev_get_id(rdev); | |
151 | ||
152 | return max77802_map_mode(max77802->opmode[id]); | |
153 | } | |
154 | ||
2e0eaa1a JMC |
155 | /** |
156 | * max77802_set_suspend_mode - set regulator opmode when the system is suspended | |
157 | * @rdev: regulator to change mode | |
158 | * @mode: operating mode to be set | |
e6f2f805 | 159 | * |
2e0eaa1a JMC |
160 | * Will set the operating mode for the regulators during system suspend. |
161 | * This function is valid for the three different enable control logics: | |
e6f2f805 | 162 | * |
2e0eaa1a JMC |
163 | * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
164 | * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) | |
165 | * Enable Control Logic3 by PWRREQ (LDO 3) | |
166 | * | |
167 | * If setting the regulator mode fails, the function only warns but does | |
168 | * not return an error code to avoid the regulator core to stop setting | |
169 | * the operating mode for the remaining regulators. | |
e6f2f805 | 170 | */ |
2e0eaa1a JMC |
171 | static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
172 | unsigned int mode) | |
e6f2f805 JMC |
173 | { |
174 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
175 | int id = rdev_get_id(rdev); | |
176 | unsigned int val; | |
177 | int shift = max77802_get_opmode_shift(id); | |
178 | ||
2e0eaa1a JMC |
179 | /* |
180 | * If the regulator has been disabled for suspend | |
181 | * then is invalid to try setting a suspend mode. | |
182 | */ | |
bf275375 | 183 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
2e0eaa1a | 184 | dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", |
e6f2f805 | 185 | rdev->desc->name, mode); |
2e0eaa1a | 186 | return 0; |
e6f2f805 JMC |
187 | } |
188 | ||
e6f2f805 | 189 | switch (mode) { |
2e0eaa1a JMC |
190 | case REGULATOR_MODE_STANDBY: |
191 | /* | |
192 | * If the regulator opmode is normal then enable | |
193 | * ON in Low Power Mode by PWRREQ. If the mode is | |
194 | * already Low Power then no action is required. | |
195 | */ | |
196 | if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) | |
197 | val = MAX77802_LP_PWRREQ; | |
198 | else | |
199 | return 0; | |
e6f2f805 | 200 | break; |
2e0eaa1a JMC |
201 | case REGULATOR_MODE_NORMAL: |
202 | /* | |
203 | * If the regulator operating mode is Low Power then | |
204 | * normal is not a valid opmode in suspend. If the | |
205 | * mode is already normal then no action is required. | |
206 | */ | |
207 | if (max77802->opmode[id] == MAX77802_OPMODE_LP) | |
208 | dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", | |
209 | rdev->desc->name, mode); | |
210 | return 0; | |
e6f2f805 JMC |
211 | default: |
212 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
213 | rdev->desc->name, mode); | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
e6f2f805 JMC |
217 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
218 | rdev->desc->enable_mask, val << shift); | |
219 | } | |
220 | ||
221 | static int max77802_enable(struct regulator_dev *rdev) | |
222 | { | |
223 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
224 | int id = rdev_get_id(rdev); | |
225 | int shift = max77802_get_opmode_shift(id); | |
226 | ||
e6fb2aac JMC |
227 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
228 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; | |
229 | ||
e6f2f805 JMC |
230 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
231 | rdev->desc->enable_mask, | |
232 | max77802->opmode[id] << shift); | |
233 | } | |
234 | ||
235 | static int max77802_find_ramp_value(struct regulator_dev *rdev, | |
236 | const unsigned int limits[], int size, | |
237 | unsigned int ramp_delay) | |
238 | { | |
239 | int i; | |
240 | ||
241 | for (i = 0; i < size; i++) { | |
242 | if (ramp_delay <= limits[i]) | |
243 | return i; | |
244 | } | |
245 | ||
246 | /* Use maximum value for no ramp control */ | |
247 | dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n", | |
248 | rdev->desc->name, ramp_delay); | |
249 | return size - 1; | |
250 | } | |
251 | ||
252 | /* Used for BUCKs 2-4 */ | |
253 | static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev, | |
254 | int ramp_delay) | |
255 | { | |
256 | int id = rdev_get_id(rdev); | |
257 | unsigned int ramp_value; | |
258 | ||
259 | if (id > MAX77802_BUCK4) { | |
260 | dev_warn(&rdev->dev, | |
261 | "%s: regulator: ramp delay not supported\n", | |
262 | rdev->desc->name); | |
263 | return -EINVAL; | |
264 | } | |
265 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit, | |
266 | ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay); | |
267 | ||
268 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
269 | MAX77802_RAMP_RATE_MASK_2BIT, | |
270 | ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT); | |
271 | } | |
272 | ||
273 | /* For BUCK1, 6 */ | |
274 | static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev, | |
275 | int ramp_delay) | |
276 | { | |
277 | unsigned int ramp_value; | |
278 | ||
279 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit, | |
280 | ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay); | |
281 | ||
282 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
283 | MAX77802_RAMP_RATE_MASK_4BIT, | |
284 | ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT); | |
285 | } | |
286 | ||
287 | /* | |
288 | * LDOs 2, 4-19, 22-35 | |
289 | */ | |
290 | static struct regulator_ops max77802_ldo_ops_logic1 = { | |
291 | .list_voltage = regulator_list_voltage_linear, | |
292 | .map_voltage = regulator_map_voltage_linear, | |
293 | .is_enabled = regulator_is_enabled_regmap, | |
294 | .enable = max77802_enable, | |
295 | .disable = regulator_disable_regmap, | |
296 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
297 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
298 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
e6fb2aac | 299 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 300 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
301 | }; |
302 | ||
303 | /* | |
304 | * LDOs 1, 20, 21, 3 | |
305 | */ | |
306 | static struct regulator_ops max77802_ldo_ops_logic2 = { | |
307 | .list_voltage = regulator_list_voltage_linear, | |
308 | .map_voltage = regulator_map_voltage_linear, | |
309 | .is_enabled = regulator_is_enabled_regmap, | |
310 | .enable = max77802_enable, | |
311 | .disable = regulator_disable_regmap, | |
312 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
313 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
314 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
efbe5199 JMC |
315 | .set_mode = max77802_set_mode, |
316 | .get_mode = max77802_get_mode, | |
2e0eaa1a | 317 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
318 | }; |
319 | ||
320 | /* BUCKS 1, 6 */ | |
321 | static struct regulator_ops max77802_buck_16_dvs_ops = { | |
322 | .list_voltage = regulator_list_voltage_linear, | |
323 | .map_voltage = regulator_map_voltage_linear, | |
324 | .is_enabled = regulator_is_enabled_regmap, | |
325 | .enable = max77802_enable, | |
326 | .disable = regulator_disable_regmap, | |
327 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
328 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
329 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
330 | .set_ramp_delay = max77802_set_ramp_delay_4bit, | |
e6fb2aac | 331 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
332 | }; |
333 | ||
b0615f1d JMC |
334 | /* BUCKs 2-4 */ |
335 | static struct regulator_ops max77802_buck_234_ops = { | |
336 | .list_voltage = regulator_list_voltage_linear, | |
337 | .map_voltage = regulator_map_voltage_linear, | |
338 | .is_enabled = regulator_is_enabled_regmap, | |
339 | .enable = max77802_enable, | |
340 | .disable = regulator_disable_regmap, | |
341 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
342 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
343 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
344 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
b0615f1d | 345 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 346 | .set_suspend_mode = max77802_set_suspend_mode, |
b0615f1d JMC |
347 | }; |
348 | ||
349 | /* BUCKs 5, 7-10 */ | |
e6f2f805 JMC |
350 | static struct regulator_ops max77802_buck_dvs_ops = { |
351 | .list_voltage = regulator_list_voltage_linear, | |
352 | .map_voltage = regulator_map_voltage_linear, | |
353 | .is_enabled = regulator_is_enabled_regmap, | |
354 | .enable = max77802_enable, | |
355 | .disable = regulator_disable_regmap, | |
356 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
357 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
358 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
359 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
e6fb2aac | 360 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
361 | }; |
362 | ||
363 | /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ | |
364 | #define regulator_77802_desc_p_ldo(num, supply, log) { \ | |
365 | .name = "LDO"#num, \ | |
ff633bea KK |
366 | .of_match = of_match_ptr("LDO"#num), \ |
367 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
368 | .id = MAX77802_LDO##num, \ |
369 | .supply_name = "inl"#supply, \ | |
370 | .ops = &max77802_ldo_ops_logic##log, \ | |
371 | .type = REGULATOR_VOLTAGE, \ | |
372 | .owner = THIS_MODULE, \ | |
373 | .min_uV = 800000, \ | |
374 | .uV_step = 50000, \ | |
375 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
376 | .n_voltages = 1 << 6, \ | |
377 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
378 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
379 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
380 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 381 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
382 | } |
383 | ||
384 | /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ | |
385 | #define regulator_77802_desc_n_ldo(num, supply, log) { \ | |
386 | .name = "LDO"#num, \ | |
ff633bea KK |
387 | .of_match = of_match_ptr("LDO"#num), \ |
388 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
389 | .id = MAX77802_LDO##num, \ |
390 | .supply_name = "inl"#supply, \ | |
391 | .ops = &max77802_ldo_ops_logic##log, \ | |
392 | .type = REGULATOR_VOLTAGE, \ | |
393 | .owner = THIS_MODULE, \ | |
394 | .min_uV = 800000, \ | |
395 | .uV_step = 25000, \ | |
396 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
397 | .n_voltages = 1 << 6, \ | |
398 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
399 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
400 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
401 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 402 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
403 | } |
404 | ||
405 | /* BUCKs 1, 6 */ | |
406 | #define regulator_77802_desc_16_buck(num) { \ | |
407 | .name = "BUCK"#num, \ | |
ff633bea KK |
408 | .of_match = of_match_ptr("BUCK"#num), \ |
409 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
410 | .id = MAX77802_BUCK##num, \ |
411 | .supply_name = "inb"#num, \ | |
412 | .ops = &max77802_buck_16_dvs_ops, \ | |
413 | .type = REGULATOR_VOLTAGE, \ | |
414 | .owner = THIS_MODULE, \ | |
415 | .min_uV = 612500, \ | |
416 | .uV_step = 6250, \ | |
417 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
418 | .n_voltages = 1 << 8, \ | |
419 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
420 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
421 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ | |
422 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 423 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
424 | } |
425 | ||
426 | /* BUCKS 2-4 */ | |
427 | #define regulator_77802_desc_234_buck(num) { \ | |
428 | .name = "BUCK"#num, \ | |
ff633bea KK |
429 | .of_match = of_match_ptr("BUCK"#num), \ |
430 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
431 | .id = MAX77802_BUCK##num, \ |
432 | .supply_name = "inb"#num, \ | |
b0615f1d | 433 | .ops = &max77802_buck_234_ops, \ |
e6f2f805 JMC |
434 | .type = REGULATOR_VOLTAGE, \ |
435 | .owner = THIS_MODULE, \ | |
436 | .min_uV = 600000, \ | |
437 | .uV_step = 6250, \ | |
438 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
439 | .n_voltages = 0x91, \ | |
440 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
441 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
442 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ | |
443 | .enable_mask = MAX77802_OPMODE_MASK << \ | |
444 | MAX77802_OPMODE_BUCK234_SHIFT, \ | |
45fc84c6 | 445 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
446 | } |
447 | ||
448 | /* BUCK 5 */ | |
449 | #define regulator_77802_desc_buck5(num) { \ | |
450 | .name = "BUCK"#num, \ | |
ff633bea KK |
451 | .of_match = of_match_ptr("BUCK"#num), \ |
452 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
453 | .id = MAX77802_BUCK##num, \ |
454 | .supply_name = "inb"#num, \ | |
455 | .ops = &max77802_buck_dvs_ops, \ | |
456 | .type = REGULATOR_VOLTAGE, \ | |
457 | .owner = THIS_MODULE, \ | |
458 | .min_uV = 750000, \ | |
459 | .uV_step = 50000, \ | |
460 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
461 | .n_voltages = 1 << 6, \ | |
462 | .vsel_reg = MAX77802_REG_BUCK5OUT, \ | |
463 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
464 | .enable_reg = MAX77802_REG_BUCK5CTRL, \ | |
465 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 466 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
467 | } |
468 | ||
469 | /* BUCKs 7-10 */ | |
470 | #define regulator_77802_desc_buck7_10(num) { \ | |
471 | .name = "BUCK"#num, \ | |
ff633bea KK |
472 | .of_match = of_match_ptr("BUCK"#num), \ |
473 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
474 | .id = MAX77802_BUCK##num, \ |
475 | .supply_name = "inb"#num, \ | |
476 | .ops = &max77802_buck_dvs_ops, \ | |
477 | .type = REGULATOR_VOLTAGE, \ | |
478 | .owner = THIS_MODULE, \ | |
479 | .min_uV = 750000, \ | |
480 | .uV_step = 50000, \ | |
481 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
482 | .n_voltages = 1 << 6, \ | |
483 | .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ | |
484 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
485 | .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ | |
486 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 487 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
488 | } |
489 | ||
6c4159a5 | 490 | static const struct regulator_desc regulators[] = { |
e6f2f805 JMC |
491 | regulator_77802_desc_16_buck(1), |
492 | regulator_77802_desc_234_buck(2), | |
493 | regulator_77802_desc_234_buck(3), | |
494 | regulator_77802_desc_234_buck(4), | |
495 | regulator_77802_desc_buck5(5), | |
496 | regulator_77802_desc_16_buck(6), | |
497 | regulator_77802_desc_buck7_10(7), | |
498 | regulator_77802_desc_buck7_10(8), | |
499 | regulator_77802_desc_buck7_10(9), | |
500 | regulator_77802_desc_buck7_10(10), | |
501 | regulator_77802_desc_n_ldo(1, 10, 2), | |
502 | regulator_77802_desc_n_ldo(2, 10, 1), | |
503 | regulator_77802_desc_p_ldo(3, 3, 2), | |
504 | regulator_77802_desc_p_ldo(4, 6, 1), | |
505 | regulator_77802_desc_p_ldo(5, 3, 1), | |
506 | regulator_77802_desc_p_ldo(6, 3, 1), | |
507 | regulator_77802_desc_p_ldo(7, 3, 1), | |
508 | regulator_77802_desc_n_ldo(8, 1, 1), | |
509 | regulator_77802_desc_p_ldo(9, 5, 1), | |
510 | regulator_77802_desc_p_ldo(10, 4, 1), | |
511 | regulator_77802_desc_p_ldo(11, 4, 1), | |
512 | regulator_77802_desc_p_ldo(12, 9, 1), | |
513 | regulator_77802_desc_p_ldo(13, 4, 1), | |
514 | regulator_77802_desc_p_ldo(14, 4, 1), | |
515 | regulator_77802_desc_n_ldo(15, 1, 1), | |
516 | regulator_77802_desc_n_ldo(17, 2, 1), | |
517 | regulator_77802_desc_p_ldo(18, 7, 1), | |
518 | regulator_77802_desc_p_ldo(19, 5, 1), | |
519 | regulator_77802_desc_p_ldo(20, 7, 2), | |
520 | regulator_77802_desc_p_ldo(21, 6, 2), | |
521 | regulator_77802_desc_p_ldo(23, 9, 1), | |
522 | regulator_77802_desc_p_ldo(24, 6, 1), | |
523 | regulator_77802_desc_p_ldo(25, 9, 1), | |
524 | regulator_77802_desc_p_ldo(26, 9, 1), | |
525 | regulator_77802_desc_n_ldo(27, 2, 1), | |
526 | regulator_77802_desc_p_ldo(28, 7, 1), | |
527 | regulator_77802_desc_p_ldo(29, 7, 1), | |
528 | regulator_77802_desc_n_ldo(30, 2, 1), | |
529 | regulator_77802_desc_p_ldo(32, 9, 1), | |
530 | regulator_77802_desc_p_ldo(33, 6, 1), | |
531 | regulator_77802_desc_p_ldo(34, 9, 1), | |
532 | regulator_77802_desc_n_ldo(35, 2, 1), | |
533 | }; | |
534 | ||
e6f2f805 JMC |
535 | static int max77802_pmic_probe(struct platform_device *pdev) |
536 | { | |
537 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
e6f2f805 | 538 | struct max77802_regulator_prv *max77802; |
ff633bea | 539 | int i, val; |
e6f2f805 JMC |
540 | struct regulator_config config = { }; |
541 | ||
e6f2f805 JMC |
542 | max77802 = devm_kzalloc(&pdev->dev, |
543 | sizeof(struct max77802_regulator_prv), | |
544 | GFP_KERNEL); | |
545 | if (!max77802) | |
546 | return -ENOMEM; | |
547 | ||
e6f2f805 JMC |
548 | config.dev = iodev->dev; |
549 | config.regmap = iodev->regmap; | |
550 | config.driver_data = max77802; | |
551 | platform_set_drvdata(pdev, max77802); | |
552 | ||
553 | for (i = 0; i < MAX77802_REG_MAX; i++) { | |
554 | struct regulator_dev *rdev; | |
ff633bea | 555 | int id = regulators[i].id; |
e6f2f805 | 556 | int shift = max77802_get_opmode_shift(id); |
ff633bea | 557 | int ret; |
e6f2f805 JMC |
558 | |
559 | ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); | |
a26ed45c KK |
560 | if (ret < 0) { |
561 | dev_warn(&pdev->dev, | |
562 | "cannot read current mode for %d\n", i); | |
563 | val = MAX77802_OPMODE_NORMAL; | |
564 | } else { | |
565 | val = val >> shift & MAX77802_OPMODE_MASK; | |
566 | } | |
aea8dfb9 JMC |
567 | |
568 | /* | |
569 | * If the regulator is disabled and the system warm rebooted, | |
570 | * the hardware reports OFF as the regulator operating mode. | |
571 | * Default to operating mode NORMAL in that case. | |
572 | */ | |
0505be71 | 573 | if (val == MAX77802_STATUS_OFF) |
aea8dfb9 JMC |
574 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
575 | else | |
576 | max77802->opmode[id] = val; | |
e6f2f805 JMC |
577 | |
578 | rdev = devm_regulator_register(&pdev->dev, | |
579 | ®ulators[i], &config); | |
580 | if (IS_ERR(rdev)) { | |
ff633bea | 581 | ret = PTR_ERR(rdev); |
e6f2f805 | 582 | dev_err(&pdev->dev, |
ff633bea KK |
583 | "regulator init failed for %d: %d\n", i, ret); |
584 | return ret; | |
e6f2f805 JMC |
585 | } |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | static const struct platform_device_id max77802_pmic_id[] = { | |
592 | {"max77802-pmic", 0}, | |
593 | { }, | |
594 | }; | |
595 | MODULE_DEVICE_TABLE(platform, max77802_pmic_id); | |
596 | ||
597 | static struct platform_driver max77802_pmic_driver = { | |
598 | .driver = { | |
599 | .name = "max77802-pmic", | |
e6f2f805 JMC |
600 | }, |
601 | .probe = max77802_pmic_probe, | |
602 | .id_table = max77802_pmic_id, | |
603 | }; | |
604 | ||
605 | module_platform_driver(max77802_pmic_driver); | |
606 | ||
607 | MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); | |
608 | MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); | |
609 | MODULE_LICENSE("GPL"); |