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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> | |
ca1c8e93 | 30 | #include <linux/module.h> |
e6f2f805 JMC |
31 | #include <linux/platform_device.h> |
32 | #include <linux/regulator/driver.h> | |
33 | #include <linux/regulator/machine.h> | |
34 | #include <linux/regulator/of_regulator.h> | |
35 | #include <linux/mfd/max77686.h> | |
36 | #include <linux/mfd/max77686-private.h> | |
5356e0da | 37 | #include <dt-bindings/regulator/maxim,max77802.h> |
e6f2f805 JMC |
38 | |
39 | /* Default ramp delay in case it is not manually set */ | |
40 | #define MAX77802_RAMP_DELAY 100000 /* uV/us */ | |
41 | ||
42 | #define MAX77802_OPMODE_SHIFT_LDO 6 | |
43 | #define MAX77802_OPMODE_BUCK234_SHIFT 4 | |
44 | #define MAX77802_OPMODE_MASK 0x3 | |
45 | ||
46 | #define MAX77802_VSEL_MASK 0x3F | |
47 | #define MAX77802_DVS_VSEL_MASK 0xFF | |
48 | ||
49 | #define MAX77802_RAMP_RATE_MASK_2BIT 0xC0 | |
50 | #define MAX77802_RAMP_RATE_SHIFT_2BIT 6 | |
51 | #define MAX77802_RAMP_RATE_MASK_4BIT 0xF0 | |
52 | #define MAX77802_RAMP_RATE_SHIFT_4BIT 4 | |
53 | ||
0505be71 | 54 | #define MAX77802_STATUS_OFF 0x0 |
e6fb2aac | 55 | #define MAX77802_OFF_PWRREQ 0x1 |
2e0eaa1a | 56 | #define MAX77802_LP_PWRREQ 0x2 |
e6fb2aac | 57 | |
e6f2f805 JMC |
58 | /* MAX77802 has two register formats: 2-bit and 4-bit */ |
59 | static const unsigned int ramp_table_77802_2bit[] = { | |
60 | 12500, | |
61 | 25000, | |
62 | 50000, | |
63 | 100000, | |
64 | }; | |
65 | ||
66 | static unsigned int ramp_table_77802_4bit[] = { | |
67 | 1000, 2000, 3030, 4000, | |
68 | 5000, 5880, 7140, 8330, | |
69 | 9090, 10000, 11110, 12500, | |
70 | 16670, 25000, 50000, 100000, | |
71 | }; | |
72 | ||
73 | struct max77802_regulator_prv { | |
ff633bea | 74 | /* Array indexed by regulator id */ |
e6f2f805 JMC |
75 | unsigned int opmode[MAX77802_REG_MAX]; |
76 | }; | |
77 | ||
4d7078e6 | 78 | static inline unsigned int max77802_map_mode(unsigned int mode) |
efbe5199 JMC |
79 | { |
80 | return mode == MAX77802_OPMODE_NORMAL ? | |
81 | REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; | |
82 | } | |
83 | ||
e6f2f805 JMC |
84 | static int max77802_get_opmode_shift(int id) |
85 | { | |
86 | if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && | |
87 | id <= MAX77802_BUCK10)) | |
88 | return 0; | |
89 | ||
90 | if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) | |
91 | return MAX77802_OPMODE_BUCK234_SHIFT; | |
92 | ||
93 | if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) | |
94 | return MAX77802_OPMODE_SHIFT_LDO; | |
95 | ||
96 | return -EINVAL; | |
97 | } | |
98 | ||
e6fb2aac JMC |
99 | /** |
100 | * max77802_set_suspend_disable - Disable the regulator during system suspend | |
101 | * @rdev: regulator to mark as disabled | |
e6f2f805 | 102 | * |
e6fb2aac JMC |
103 | * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. |
104 | * Configure the regulator so the PMIC will turn it OFF during system suspend. | |
e6f2f805 | 105 | */ |
e6fb2aac | 106 | static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
e6f2f805 | 107 | { |
e6fb2aac | 108 | unsigned int val = MAX77802_OFF_PWRREQ; |
e6f2f805 JMC |
109 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
110 | int id = rdev_get_id(rdev); | |
111 | int shift = max77802_get_opmode_shift(id); | |
112 | ||
113 | max77802->opmode[id] = val; | |
114 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
115 | rdev->desc->enable_mask, val << shift); | |
116 | } | |
117 | ||
efbe5199 JMC |
118 | /* |
119 | * Some LDOs support Low Power Mode while the system is running. | |
120 | * | |
121 | * LDOs 1, 3, 20, 21. | |
122 | */ | |
123 | static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
124 | { | |
125 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
126 | int id = rdev_get_id(rdev); | |
127 | unsigned int val; | |
128 | int shift = max77802_get_opmode_shift(id); | |
129 | ||
130 | switch (mode) { | |
131 | case REGULATOR_MODE_STANDBY: | |
132 | val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ | |
133 | break; | |
134 | case REGULATOR_MODE_NORMAL: | |
135 | val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ | |
136 | break; | |
137 | default: | |
138 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
139 | rdev->desc->name, mode); | |
140 | return -EINVAL; | |
141 | } | |
142 | ||
143 | max77802->opmode[id] = val; | |
144 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
145 | rdev->desc->enable_mask, val << shift); | |
146 | } | |
147 | ||
148 | static unsigned max77802_get_mode(struct regulator_dev *rdev) | |
149 | { | |
150 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
151 | int id = rdev_get_id(rdev); | |
152 | ||
153 | return max77802_map_mode(max77802->opmode[id]); | |
154 | } | |
155 | ||
2e0eaa1a JMC |
156 | /** |
157 | * max77802_set_suspend_mode - set regulator opmode when the system is suspended | |
158 | * @rdev: regulator to change mode | |
159 | * @mode: operating mode to be set | |
e6f2f805 | 160 | * |
2e0eaa1a JMC |
161 | * Will set the operating mode for the regulators during system suspend. |
162 | * This function is valid for the three different enable control logics: | |
e6f2f805 | 163 | * |
2e0eaa1a JMC |
164 | * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
165 | * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) | |
166 | * Enable Control Logic3 by PWRREQ (LDO 3) | |
167 | * | |
168 | * If setting the regulator mode fails, the function only warns but does | |
169 | * not return an error code to avoid the regulator core to stop setting | |
170 | * the operating mode for the remaining regulators. | |
e6f2f805 | 171 | */ |
2e0eaa1a JMC |
172 | static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
173 | unsigned int mode) | |
e6f2f805 JMC |
174 | { |
175 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
176 | int id = rdev_get_id(rdev); | |
177 | unsigned int val; | |
178 | int shift = max77802_get_opmode_shift(id); | |
179 | ||
2e0eaa1a JMC |
180 | /* |
181 | * If the regulator has been disabled for suspend | |
182 | * then is invalid to try setting a suspend mode. | |
183 | */ | |
bf275375 | 184 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
2e0eaa1a | 185 | dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", |
e6f2f805 | 186 | rdev->desc->name, mode); |
2e0eaa1a | 187 | return 0; |
e6f2f805 JMC |
188 | } |
189 | ||
e6f2f805 | 190 | switch (mode) { |
2e0eaa1a JMC |
191 | case REGULATOR_MODE_STANDBY: |
192 | /* | |
193 | * If the regulator opmode is normal then enable | |
194 | * ON in Low Power Mode by PWRREQ. If the mode is | |
195 | * already Low Power then no action is required. | |
196 | */ | |
197 | if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) | |
198 | val = MAX77802_LP_PWRREQ; | |
199 | else | |
200 | return 0; | |
e6f2f805 | 201 | break; |
2e0eaa1a JMC |
202 | case REGULATOR_MODE_NORMAL: |
203 | /* | |
204 | * If the regulator operating mode is Low Power then | |
205 | * normal is not a valid opmode in suspend. If the | |
206 | * mode is already normal then no action is required. | |
207 | */ | |
208 | if (max77802->opmode[id] == MAX77802_OPMODE_LP) | |
209 | dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", | |
210 | rdev->desc->name, mode); | |
211 | return 0; | |
e6f2f805 JMC |
212 | default: |
213 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
214 | rdev->desc->name, mode); | |
215 | return -EINVAL; | |
216 | } | |
217 | ||
e6f2f805 JMC |
218 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
219 | rdev->desc->enable_mask, val << shift); | |
220 | } | |
221 | ||
222 | static int max77802_enable(struct regulator_dev *rdev) | |
223 | { | |
224 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
225 | int id = rdev_get_id(rdev); | |
226 | int shift = max77802_get_opmode_shift(id); | |
227 | ||
e6fb2aac JMC |
228 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
229 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; | |
230 | ||
e6f2f805 JMC |
231 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
232 | rdev->desc->enable_mask, | |
233 | max77802->opmode[id] << shift); | |
234 | } | |
235 | ||
236 | static int max77802_find_ramp_value(struct regulator_dev *rdev, | |
237 | const unsigned int limits[], int size, | |
238 | unsigned int ramp_delay) | |
239 | { | |
240 | int i; | |
241 | ||
242 | for (i = 0; i < size; i++) { | |
243 | if (ramp_delay <= limits[i]) | |
244 | return i; | |
245 | } | |
246 | ||
247 | /* Use maximum value for no ramp control */ | |
248 | dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n", | |
249 | rdev->desc->name, ramp_delay); | |
250 | return size - 1; | |
251 | } | |
252 | ||
253 | /* Used for BUCKs 2-4 */ | |
254 | static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev, | |
255 | int ramp_delay) | |
256 | { | |
257 | int id = rdev_get_id(rdev); | |
258 | unsigned int ramp_value; | |
259 | ||
260 | if (id > MAX77802_BUCK4) { | |
261 | dev_warn(&rdev->dev, | |
262 | "%s: regulator: ramp delay not supported\n", | |
263 | rdev->desc->name); | |
264 | return -EINVAL; | |
265 | } | |
266 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit, | |
267 | ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay); | |
268 | ||
269 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
270 | MAX77802_RAMP_RATE_MASK_2BIT, | |
271 | ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT); | |
272 | } | |
273 | ||
274 | /* For BUCK1, 6 */ | |
275 | static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev, | |
276 | int ramp_delay) | |
277 | { | |
278 | unsigned int ramp_value; | |
279 | ||
280 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit, | |
281 | ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay); | |
282 | ||
283 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
284 | MAX77802_RAMP_RATE_MASK_4BIT, | |
285 | ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT); | |
286 | } | |
287 | ||
288 | /* | |
289 | * LDOs 2, 4-19, 22-35 | |
290 | */ | |
291 | static struct regulator_ops max77802_ldo_ops_logic1 = { | |
292 | .list_voltage = regulator_list_voltage_linear, | |
293 | .map_voltage = regulator_map_voltage_linear, | |
294 | .is_enabled = regulator_is_enabled_regmap, | |
295 | .enable = max77802_enable, | |
296 | .disable = regulator_disable_regmap, | |
297 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
298 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
299 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
e6fb2aac | 300 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 301 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
302 | }; |
303 | ||
304 | /* | |
305 | * LDOs 1, 20, 21, 3 | |
306 | */ | |
307 | static struct regulator_ops max77802_ldo_ops_logic2 = { | |
308 | .list_voltage = regulator_list_voltage_linear, | |
309 | .map_voltage = regulator_map_voltage_linear, | |
310 | .is_enabled = regulator_is_enabled_regmap, | |
311 | .enable = max77802_enable, | |
312 | .disable = regulator_disable_regmap, | |
313 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
314 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
315 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
efbe5199 JMC |
316 | .set_mode = max77802_set_mode, |
317 | .get_mode = max77802_get_mode, | |
2e0eaa1a | 318 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
319 | }; |
320 | ||
321 | /* BUCKS 1, 6 */ | |
322 | static struct regulator_ops max77802_buck_16_dvs_ops = { | |
323 | .list_voltage = regulator_list_voltage_linear, | |
324 | .map_voltage = regulator_map_voltage_linear, | |
325 | .is_enabled = regulator_is_enabled_regmap, | |
326 | .enable = max77802_enable, | |
327 | .disable = regulator_disable_regmap, | |
328 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
329 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
330 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
331 | .set_ramp_delay = max77802_set_ramp_delay_4bit, | |
e6fb2aac | 332 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
333 | }; |
334 | ||
b0615f1d JMC |
335 | /* BUCKs 2-4 */ |
336 | static struct regulator_ops max77802_buck_234_ops = { | |
337 | .list_voltage = regulator_list_voltage_linear, | |
338 | .map_voltage = regulator_map_voltage_linear, | |
339 | .is_enabled = regulator_is_enabled_regmap, | |
340 | .enable = max77802_enable, | |
341 | .disable = regulator_disable_regmap, | |
342 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
343 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
344 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
345 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
b0615f1d | 346 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 347 | .set_suspend_mode = max77802_set_suspend_mode, |
b0615f1d JMC |
348 | }; |
349 | ||
350 | /* BUCKs 5, 7-10 */ | |
e6f2f805 JMC |
351 | static struct regulator_ops max77802_buck_dvs_ops = { |
352 | .list_voltage = regulator_list_voltage_linear, | |
353 | .map_voltage = regulator_map_voltage_linear, | |
354 | .is_enabled = regulator_is_enabled_regmap, | |
355 | .enable = max77802_enable, | |
356 | .disable = regulator_disable_regmap, | |
357 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
358 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
359 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
360 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
e6fb2aac | 361 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
362 | }; |
363 | ||
364 | /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ | |
365 | #define regulator_77802_desc_p_ldo(num, supply, log) { \ | |
366 | .name = "LDO"#num, \ | |
ff633bea KK |
367 | .of_match = of_match_ptr("LDO"#num), \ |
368 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
369 | .id = MAX77802_LDO##num, \ |
370 | .supply_name = "inl"#supply, \ | |
371 | .ops = &max77802_ldo_ops_logic##log, \ | |
372 | .type = REGULATOR_VOLTAGE, \ | |
373 | .owner = THIS_MODULE, \ | |
374 | .min_uV = 800000, \ | |
375 | .uV_step = 50000, \ | |
376 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
377 | .n_voltages = 1 << 6, \ | |
378 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
379 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
380 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
381 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 382 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
383 | } |
384 | ||
385 | /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ | |
386 | #define regulator_77802_desc_n_ldo(num, supply, log) { \ | |
387 | .name = "LDO"#num, \ | |
ff633bea KK |
388 | .of_match = of_match_ptr("LDO"#num), \ |
389 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
390 | .id = MAX77802_LDO##num, \ |
391 | .supply_name = "inl"#supply, \ | |
392 | .ops = &max77802_ldo_ops_logic##log, \ | |
393 | .type = REGULATOR_VOLTAGE, \ | |
394 | .owner = THIS_MODULE, \ | |
395 | .min_uV = 800000, \ | |
396 | .uV_step = 25000, \ | |
397 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
398 | .n_voltages = 1 << 6, \ | |
399 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
400 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
401 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
402 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 403 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
404 | } |
405 | ||
406 | /* BUCKs 1, 6 */ | |
407 | #define regulator_77802_desc_16_buck(num) { \ | |
408 | .name = "BUCK"#num, \ | |
ff633bea KK |
409 | .of_match = of_match_ptr("BUCK"#num), \ |
410 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
411 | .id = MAX77802_BUCK##num, \ |
412 | .supply_name = "inb"#num, \ | |
413 | .ops = &max77802_buck_16_dvs_ops, \ | |
414 | .type = REGULATOR_VOLTAGE, \ | |
415 | .owner = THIS_MODULE, \ | |
416 | .min_uV = 612500, \ | |
417 | .uV_step = 6250, \ | |
418 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
419 | .n_voltages = 1 << 8, \ | |
420 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
421 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
422 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ | |
423 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 424 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
425 | } |
426 | ||
427 | /* BUCKS 2-4 */ | |
428 | #define regulator_77802_desc_234_buck(num) { \ | |
429 | .name = "BUCK"#num, \ | |
ff633bea KK |
430 | .of_match = of_match_ptr("BUCK"#num), \ |
431 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
432 | .id = MAX77802_BUCK##num, \ |
433 | .supply_name = "inb"#num, \ | |
b0615f1d | 434 | .ops = &max77802_buck_234_ops, \ |
e6f2f805 JMC |
435 | .type = REGULATOR_VOLTAGE, \ |
436 | .owner = THIS_MODULE, \ | |
437 | .min_uV = 600000, \ | |
438 | .uV_step = 6250, \ | |
439 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
440 | .n_voltages = 0x91, \ | |
441 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
442 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
443 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ | |
444 | .enable_mask = MAX77802_OPMODE_MASK << \ | |
445 | MAX77802_OPMODE_BUCK234_SHIFT, \ | |
45fc84c6 | 446 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
447 | } |
448 | ||
449 | /* BUCK 5 */ | |
450 | #define regulator_77802_desc_buck5(num) { \ | |
451 | .name = "BUCK"#num, \ | |
ff633bea KK |
452 | .of_match = of_match_ptr("BUCK"#num), \ |
453 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
454 | .id = MAX77802_BUCK##num, \ |
455 | .supply_name = "inb"#num, \ | |
456 | .ops = &max77802_buck_dvs_ops, \ | |
457 | .type = REGULATOR_VOLTAGE, \ | |
458 | .owner = THIS_MODULE, \ | |
459 | .min_uV = 750000, \ | |
460 | .uV_step = 50000, \ | |
461 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
462 | .n_voltages = 1 << 6, \ | |
463 | .vsel_reg = MAX77802_REG_BUCK5OUT, \ | |
464 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
465 | .enable_reg = MAX77802_REG_BUCK5CTRL, \ | |
466 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 467 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
468 | } |
469 | ||
470 | /* BUCKs 7-10 */ | |
471 | #define regulator_77802_desc_buck7_10(num) { \ | |
472 | .name = "BUCK"#num, \ | |
ff633bea KK |
473 | .of_match = of_match_ptr("BUCK"#num), \ |
474 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
475 | .id = MAX77802_BUCK##num, \ |
476 | .supply_name = "inb"#num, \ | |
477 | .ops = &max77802_buck_dvs_ops, \ | |
478 | .type = REGULATOR_VOLTAGE, \ | |
479 | .owner = THIS_MODULE, \ | |
480 | .min_uV = 750000, \ | |
481 | .uV_step = 50000, \ | |
482 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
483 | .n_voltages = 1 << 6, \ | |
484 | .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ | |
485 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
486 | .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ | |
487 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 488 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
489 | } |
490 | ||
6c4159a5 | 491 | static const struct regulator_desc regulators[] = { |
e6f2f805 JMC |
492 | regulator_77802_desc_16_buck(1), |
493 | regulator_77802_desc_234_buck(2), | |
494 | regulator_77802_desc_234_buck(3), | |
495 | regulator_77802_desc_234_buck(4), | |
496 | regulator_77802_desc_buck5(5), | |
497 | regulator_77802_desc_16_buck(6), | |
498 | regulator_77802_desc_buck7_10(7), | |
499 | regulator_77802_desc_buck7_10(8), | |
500 | regulator_77802_desc_buck7_10(9), | |
501 | regulator_77802_desc_buck7_10(10), | |
502 | regulator_77802_desc_n_ldo(1, 10, 2), | |
503 | regulator_77802_desc_n_ldo(2, 10, 1), | |
504 | regulator_77802_desc_p_ldo(3, 3, 2), | |
505 | regulator_77802_desc_p_ldo(4, 6, 1), | |
506 | regulator_77802_desc_p_ldo(5, 3, 1), | |
507 | regulator_77802_desc_p_ldo(6, 3, 1), | |
508 | regulator_77802_desc_p_ldo(7, 3, 1), | |
509 | regulator_77802_desc_n_ldo(8, 1, 1), | |
510 | regulator_77802_desc_p_ldo(9, 5, 1), | |
511 | regulator_77802_desc_p_ldo(10, 4, 1), | |
512 | regulator_77802_desc_p_ldo(11, 4, 1), | |
513 | regulator_77802_desc_p_ldo(12, 9, 1), | |
514 | regulator_77802_desc_p_ldo(13, 4, 1), | |
515 | regulator_77802_desc_p_ldo(14, 4, 1), | |
516 | regulator_77802_desc_n_ldo(15, 1, 1), | |
517 | regulator_77802_desc_n_ldo(17, 2, 1), | |
518 | regulator_77802_desc_p_ldo(18, 7, 1), | |
519 | regulator_77802_desc_p_ldo(19, 5, 1), | |
520 | regulator_77802_desc_p_ldo(20, 7, 2), | |
521 | regulator_77802_desc_p_ldo(21, 6, 2), | |
522 | regulator_77802_desc_p_ldo(23, 9, 1), | |
523 | regulator_77802_desc_p_ldo(24, 6, 1), | |
524 | regulator_77802_desc_p_ldo(25, 9, 1), | |
525 | regulator_77802_desc_p_ldo(26, 9, 1), | |
526 | regulator_77802_desc_n_ldo(27, 2, 1), | |
527 | regulator_77802_desc_p_ldo(28, 7, 1), | |
528 | regulator_77802_desc_p_ldo(29, 7, 1), | |
529 | regulator_77802_desc_n_ldo(30, 2, 1), | |
530 | regulator_77802_desc_p_ldo(32, 9, 1), | |
531 | regulator_77802_desc_p_ldo(33, 6, 1), | |
532 | regulator_77802_desc_p_ldo(34, 9, 1), | |
533 | regulator_77802_desc_n_ldo(35, 2, 1), | |
534 | }; | |
535 | ||
e6f2f805 JMC |
536 | static int max77802_pmic_probe(struct platform_device *pdev) |
537 | { | |
538 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
e6f2f805 | 539 | struct max77802_regulator_prv *max77802; |
ff633bea | 540 | int i, val; |
e6f2f805 JMC |
541 | struct regulator_config config = { }; |
542 | ||
e6f2f805 JMC |
543 | max77802 = devm_kzalloc(&pdev->dev, |
544 | sizeof(struct max77802_regulator_prv), | |
545 | GFP_KERNEL); | |
546 | if (!max77802) | |
547 | return -ENOMEM; | |
548 | ||
e6f2f805 JMC |
549 | config.dev = iodev->dev; |
550 | config.regmap = iodev->regmap; | |
551 | config.driver_data = max77802; | |
552 | platform_set_drvdata(pdev, max77802); | |
553 | ||
554 | for (i = 0; i < MAX77802_REG_MAX; i++) { | |
555 | struct regulator_dev *rdev; | |
ff633bea | 556 | int id = regulators[i].id; |
e6f2f805 | 557 | int shift = max77802_get_opmode_shift(id); |
ff633bea | 558 | int ret; |
e6f2f805 JMC |
559 | |
560 | ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); | |
a26ed45c KK |
561 | if (ret < 0) { |
562 | dev_warn(&pdev->dev, | |
563 | "cannot read current mode for %d\n", i); | |
564 | val = MAX77802_OPMODE_NORMAL; | |
565 | } else { | |
566 | val = val >> shift & MAX77802_OPMODE_MASK; | |
567 | } | |
aea8dfb9 JMC |
568 | |
569 | /* | |
570 | * If the regulator is disabled and the system warm rebooted, | |
571 | * the hardware reports OFF as the regulator operating mode. | |
572 | * Default to operating mode NORMAL in that case. | |
573 | */ | |
0505be71 | 574 | if (val == MAX77802_STATUS_OFF) |
aea8dfb9 JMC |
575 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
576 | else | |
577 | max77802->opmode[id] = val; | |
e6f2f805 JMC |
578 | |
579 | rdev = devm_regulator_register(&pdev->dev, | |
580 | ®ulators[i], &config); | |
581 | if (IS_ERR(rdev)) { | |
ff633bea | 582 | ret = PTR_ERR(rdev); |
e6f2f805 | 583 | dev_err(&pdev->dev, |
ff633bea KK |
584 | "regulator init failed for %d: %d\n", i, ret); |
585 | return ret; | |
e6f2f805 JMC |
586 | } |
587 | } | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | static const struct platform_device_id max77802_pmic_id[] = { | |
593 | {"max77802-pmic", 0}, | |
594 | { }, | |
595 | }; | |
596 | MODULE_DEVICE_TABLE(platform, max77802_pmic_id); | |
597 | ||
598 | static struct platform_driver max77802_pmic_driver = { | |
599 | .driver = { | |
600 | .name = "max77802-pmic", | |
e6f2f805 JMC |
601 | }, |
602 | .probe = max77802_pmic_probe, | |
603 | .id_table = max77802_pmic_id, | |
604 | }; | |
605 | ||
606 | module_platform_driver(max77802_pmic_driver); | |
607 | ||
608 | MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); | |
609 | MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); | |
610 | MODULE_LICENSE("GPL"); |