1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // |
3 | // max77802.c - Regulator driver for the Maxim 77802 |
4 | // |
5 | // Copyright (C) 2013-2014 Google, Inc |
6 | // Simon Glass <sjg@chromium.org> |
7 | // |
8 | // Copyright (C) 2012 Samsung Electronics |
9 | // Chiwoong Byun <woong.byun@samsung.com> |
10 | // Jonghwa Lee <jonghwa3.lee@samsung.com> |
11 | // |
12 | // This driver is based on max8997.c |
13 | |
14 | #include <linux/kernel.h> |
15 | #include <linux/bug.h> |
16 | #include <linux/err.h> |
17 | #include <linux/slab.h> |
18 | #include <linux/module.h> |
19 | #include <linux/platform_device.h> |
20 | #include <linux/regulator/driver.h> |
21 | #include <linux/regulator/machine.h> |
22 | #include <linux/regulator/of_regulator.h> |
23 | #include <linux/mfd/max77686.h> |
24 | #include <linux/mfd/max77686-private.h> |
25 | #include <dt-bindings/regulator/maxim,max77802.h> |
26 | |
27 | /* Default ramp delay in case it is not manually set */ |
28 | #define MAX77802_RAMP_DELAY 100000 /* uV/us */ |
29 | |
30 | #define MAX77802_OPMODE_SHIFT_LDO 6 |
31 | #define MAX77802_OPMODE_BUCK234_SHIFT 4 |
32 | #define MAX77802_OPMODE_MASK 0x3 |
33 | |
34 | #define MAX77802_VSEL_MASK 0x3F |
35 | #define MAX77802_DVS_VSEL_MASK 0xFF |
36 | |
37 | #define MAX77802_RAMP_RATE_MASK_2BIT 0xC0 |
38 | #define MAX77802_RAMP_RATE_SHIFT_2BIT 6 |
39 | #define MAX77802_RAMP_RATE_MASK_4BIT 0xF0 |
40 | #define MAX77802_RAMP_RATE_SHIFT_4BIT 4 |
41 | |
42 | #define MAX77802_STATUS_OFF 0x0 |
43 | #define MAX77802_OFF_PWRREQ 0x1 |
44 | #define MAX77802_LP_PWRREQ 0x2 |
45 | |
46 | static const unsigned int max77802_buck234_ramp_table[] = { |
47 | 12500, |
48 | 25000, |
49 | 50000, |
50 | 100000, |
51 | }; |
52 | |
53 | static const unsigned int max77802_buck16_ramp_table[] = { |
54 | 1000, 2000, 3030, 4000, |
55 | 5000, 5880, 7140, 8330, |
56 | 9090, 10000, 11110, 12500, |
57 | 16670, 25000, 50000, 100000, |
58 | }; |
59 | |
60 | struct max77802_regulator_prv { |
61 | /* Array indexed by regulator id */ |
62 | unsigned int opmode[MAX77802_REG_MAX]; |
63 | }; |
64 | |
65 | static inline unsigned int max77802_map_mode(unsigned int mode) |
66 | { |
67 | return mode == MAX77802_OPMODE_NORMAL ? |
68 | REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; |
69 | } |
70 | |
71 | static int max77802_get_opmode_shift(int id) |
72 | { |
73 | if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && |
74 | id <= MAX77802_BUCK10)) |
75 | return 0; |
76 | |
77 | if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) |
78 | return MAX77802_OPMODE_BUCK234_SHIFT; |
79 | |
80 | if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) |
81 | return MAX77802_OPMODE_SHIFT_LDO; |
82 | |
83 | return -EINVAL; |
84 | } |
85 | |
86 | /** |
87 | * max77802_set_suspend_disable - Disable the regulator during system suspend |
88 | * @rdev: regulator to mark as disabled |
89 | * |
90 | * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. |
91 | * Configure the regulator so the PMIC will turn it OFF during system suspend. |
92 | */ |
93 | static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
94 | { |
95 | unsigned int val = MAX77802_OFF_PWRREQ; |
96 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
97 | unsigned int id = rdev_get_id(rdev); |
98 | int shift = max77802_get_opmode_shift(id); |
99 | |
100 | if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
101 | return -EINVAL; |
102 | max77802->opmode[id] = val; |
103 | return regmap_update_bits(map: rdev->regmap, reg: rdev->desc->enable_reg, |
104 | mask: rdev->desc->enable_mask, val: val << shift); |
105 | } |
106 | |
107 | /* |
108 | * Some LDOs support Low Power Mode while the system is running. |
109 | * |
110 | * LDOs 1, 3, 20, 21. |
111 | */ |
112 | static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) |
113 | { |
114 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
115 | unsigned int id = rdev_get_id(rdev); |
116 | unsigned int val; |
117 | int shift = max77802_get_opmode_shift(id); |
118 | |
119 | switch (mode) { |
120 | case REGULATOR_MODE_STANDBY: |
121 | val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ |
122 | break; |
123 | case REGULATOR_MODE_NORMAL: |
124 | val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ |
125 | break; |
126 | default: |
127 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n" , |
128 | rdev->desc->name, mode); |
129 | return -EINVAL; |
130 | } |
131 | |
132 | if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
133 | return -EINVAL; |
134 | |
135 | max77802->opmode[id] = val; |
136 | return regmap_update_bits(map: rdev->regmap, reg: rdev->desc->enable_reg, |
137 | mask: rdev->desc->enable_mask, val: val << shift); |
138 | } |
139 | |
140 | static unsigned max77802_get_mode(struct regulator_dev *rdev) |
141 | { |
142 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
143 | unsigned int id = rdev_get_id(rdev); |
144 | |
145 | if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
146 | return -EINVAL; |
147 | return max77802_map_mode(mode: max77802->opmode[id]); |
148 | } |
149 | |
150 | /** |
151 | * max77802_set_suspend_mode - set regulator opmode when the system is suspended |
152 | * @rdev: regulator to change mode |
153 | * @mode: operating mode to be set |
154 | * |
155 | * Will set the operating mode for the regulators during system suspend. |
156 | * This function is valid for the three different enable control logics: |
157 | * |
158 | * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
159 | * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) |
160 | * Enable Control Logic3 by PWRREQ (LDO 3) |
161 | * |
162 | * If setting the regulator mode fails, the function only warns but does |
163 | * not return an error code to avoid the regulator core to stop setting |
164 | * the operating mode for the remaining regulators. |
165 | */ |
166 | static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
167 | unsigned int mode) |
168 | { |
169 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
170 | unsigned int id = rdev_get_id(rdev); |
171 | unsigned int val; |
172 | int shift = max77802_get_opmode_shift(id); |
173 | |
174 | if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
175 | return -EINVAL; |
176 | |
177 | /* |
178 | * If the regulator has been disabled for suspend |
179 | * then is invalid to try setting a suspend mode. |
180 | */ |
181 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
182 | dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n" , |
183 | rdev->desc->name, mode); |
184 | return 0; |
185 | } |
186 | |
187 | switch (mode) { |
188 | case REGULATOR_MODE_STANDBY: |
189 | /* |
190 | * If the regulator opmode is normal then enable |
191 | * ON in Low Power Mode by PWRREQ. If the mode is |
192 | * already Low Power then no action is required. |
193 | */ |
194 | if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) |
195 | val = MAX77802_LP_PWRREQ; |
196 | else |
197 | return 0; |
198 | break; |
199 | case REGULATOR_MODE_NORMAL: |
200 | /* |
201 | * If the regulator operating mode is Low Power then |
202 | * normal is not a valid opmode in suspend. If the |
203 | * mode is already normal then no action is required. |
204 | */ |
205 | if (max77802->opmode[id] == MAX77802_OPMODE_LP) |
206 | dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n" , |
207 | rdev->desc->name, mode); |
208 | return 0; |
209 | default: |
210 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n" , |
211 | rdev->desc->name, mode); |
212 | return -EINVAL; |
213 | } |
214 | |
215 | return regmap_update_bits(map: rdev->regmap, reg: rdev->desc->enable_reg, |
216 | mask: rdev->desc->enable_mask, val: val << shift); |
217 | } |
218 | |
219 | static int max77802_enable(struct regulator_dev *rdev) |
220 | { |
221 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
222 | unsigned int id = rdev_get_id(rdev); |
223 | int shift = max77802_get_opmode_shift(id); |
224 | |
225 | if (WARN_ON_ONCE(id >= ARRAY_SIZE(max77802->opmode))) |
226 | return -EINVAL; |
227 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
228 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
229 | |
230 | return regmap_update_bits(map: rdev->regmap, reg: rdev->desc->enable_reg, |
231 | mask: rdev->desc->enable_mask, |
232 | val: max77802->opmode[id] << shift); |
233 | } |
234 | |
235 | /* |
236 | * LDOs 2, 4-19, 22-35 |
237 | */ |
238 | static const struct regulator_ops max77802_ldo_ops_logic1 = { |
239 | .list_voltage = regulator_list_voltage_linear, |
240 | .map_voltage = regulator_map_voltage_linear, |
241 | .is_enabled = regulator_is_enabled_regmap, |
242 | .enable = max77802_enable, |
243 | .disable = regulator_disable_regmap, |
244 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
245 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
246 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
247 | .set_suspend_disable = max77802_set_suspend_disable, |
248 | .set_suspend_mode = max77802_set_suspend_mode, |
249 | }; |
250 | |
251 | /* |
252 | * LDOs 1, 20, 21, 3 |
253 | */ |
254 | static const struct regulator_ops max77802_ldo_ops_logic2 = { |
255 | .list_voltage = regulator_list_voltage_linear, |
256 | .map_voltage = regulator_map_voltage_linear, |
257 | .is_enabled = regulator_is_enabled_regmap, |
258 | .enable = max77802_enable, |
259 | .disable = regulator_disable_regmap, |
260 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
261 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
262 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
263 | .set_mode = max77802_set_mode, |
264 | .get_mode = max77802_get_mode, |
265 | .set_suspend_mode = max77802_set_suspend_mode, |
266 | }; |
267 | |
268 | /* BUCKS 1, 6 */ |
269 | static const struct regulator_ops max77802_buck_16_dvs_ops = { |
270 | .list_voltage = regulator_list_voltage_linear, |
271 | .map_voltage = regulator_map_voltage_linear, |
272 | .is_enabled = regulator_is_enabled_regmap, |
273 | .enable = max77802_enable, |
274 | .disable = regulator_disable_regmap, |
275 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
276 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
277 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
278 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
279 | .set_suspend_disable = max77802_set_suspend_disable, |
280 | }; |
281 | |
282 | /* BUCKs 2-4 */ |
283 | static const struct regulator_ops max77802_buck_234_ops = { |
284 | .list_voltage = regulator_list_voltage_linear, |
285 | .map_voltage = regulator_map_voltage_linear, |
286 | .is_enabled = regulator_is_enabled_regmap, |
287 | .enable = max77802_enable, |
288 | .disable = regulator_disable_regmap, |
289 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
290 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
291 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
292 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
293 | .set_suspend_disable = max77802_set_suspend_disable, |
294 | .set_suspend_mode = max77802_set_suspend_mode, |
295 | }; |
296 | |
297 | /* BUCKs 5, 7-10 */ |
298 | static const struct regulator_ops max77802_buck_dvs_ops = { |
299 | .list_voltage = regulator_list_voltage_linear, |
300 | .map_voltage = regulator_map_voltage_linear, |
301 | .is_enabled = regulator_is_enabled_regmap, |
302 | .enable = max77802_enable, |
303 | .disable = regulator_disable_regmap, |
304 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
305 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
306 | .set_voltage_time_sel = regulator_set_voltage_time_sel, |
307 | .set_suspend_disable = max77802_set_suspend_disable, |
308 | }; |
309 | |
310 | /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ |
311 | #define regulator_77802_desc_p_ldo(num, supply, log) { \ |
312 | .name = "LDO"#num, \ |
313 | .of_match = of_match_ptr("LDO"#num), \ |
314 | .regulators_node = of_match_ptr("regulators"), \ |
315 | .id = MAX77802_LDO##num, \ |
316 | .supply_name = "inl"#supply, \ |
317 | .ops = &max77802_ldo_ops_logic##log, \ |
318 | .type = REGULATOR_VOLTAGE, \ |
319 | .owner = THIS_MODULE, \ |
320 | .min_uV = 800000, \ |
321 | .uV_step = 50000, \ |
322 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
323 | .n_voltages = 1 << 6, \ |
324 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
325 | .vsel_mask = MAX77802_VSEL_MASK, \ |
326 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
327 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ |
328 | .of_map_mode = max77802_map_mode, \ |
329 | } |
330 | |
331 | /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ |
332 | #define regulator_77802_desc_n_ldo(num, supply, log) { \ |
333 | .name = "LDO"#num, \ |
334 | .of_match = of_match_ptr("LDO"#num), \ |
335 | .regulators_node = of_match_ptr("regulators"), \ |
336 | .id = MAX77802_LDO##num, \ |
337 | .supply_name = "inl"#supply, \ |
338 | .ops = &max77802_ldo_ops_logic##log, \ |
339 | .type = REGULATOR_VOLTAGE, \ |
340 | .owner = THIS_MODULE, \ |
341 | .min_uV = 800000, \ |
342 | .uV_step = 25000, \ |
343 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
344 | .n_voltages = 1 << 6, \ |
345 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
346 | .vsel_mask = MAX77802_VSEL_MASK, \ |
347 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ |
348 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ |
349 | .of_map_mode = max77802_map_mode, \ |
350 | } |
351 | |
352 | /* BUCKs 1, 6 */ |
353 | #define regulator_77802_desc_16_buck(num) { \ |
354 | .name = "BUCK"#num, \ |
355 | .of_match = of_match_ptr("BUCK"#num), \ |
356 | .regulators_node = of_match_ptr("regulators"), \ |
357 | .id = MAX77802_BUCK##num, \ |
358 | .supply_name = "inb"#num, \ |
359 | .ops = &max77802_buck_16_dvs_ops, \ |
360 | .type = REGULATOR_VOLTAGE, \ |
361 | .owner = THIS_MODULE, \ |
362 | .min_uV = 612500, \ |
363 | .uV_step = 6250, \ |
364 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
365 | .n_voltages = 1 << 8, \ |
366 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ |
367 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ |
368 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ |
369 | .enable_mask = MAX77802_OPMODE_MASK, \ |
370 | .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL, \ |
371 | .ramp_mask = MAX77802_RAMP_RATE_MASK_4BIT, \ |
372 | .ramp_delay_table = max77802_buck16_ramp_table, \ |
373 | .n_ramp_values = ARRAY_SIZE(max77802_buck16_ramp_table), \ |
374 | .of_map_mode = max77802_map_mode, \ |
375 | } |
376 | |
377 | /* BUCKS 2-4 */ |
378 | #define regulator_77802_desc_234_buck(num) { \ |
379 | .name = "BUCK"#num, \ |
380 | .of_match = of_match_ptr("BUCK"#num), \ |
381 | .regulators_node = of_match_ptr("regulators"), \ |
382 | .id = MAX77802_BUCK##num, \ |
383 | .supply_name = "inb"#num, \ |
384 | .ops = &max77802_buck_234_ops, \ |
385 | .type = REGULATOR_VOLTAGE, \ |
386 | .owner = THIS_MODULE, \ |
387 | .min_uV = 600000, \ |
388 | .uV_step = 6250, \ |
389 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
390 | .n_voltages = 0x91, \ |
391 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ |
392 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ |
393 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ |
394 | .enable_mask = MAX77802_OPMODE_MASK << \ |
395 | MAX77802_OPMODE_BUCK234_SHIFT, \ |
396 | .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ |
397 | .ramp_mask = MAX77802_RAMP_RATE_MASK_2BIT, \ |
398 | .ramp_delay_table = max77802_buck234_ramp_table, \ |
399 | .n_ramp_values = ARRAY_SIZE(max77802_buck234_ramp_table), \ |
400 | .of_map_mode = max77802_map_mode, \ |
401 | } |
402 | |
403 | /* BUCK 5 */ |
404 | #define regulator_77802_desc_buck5(num) { \ |
405 | .name = "BUCK"#num, \ |
406 | .of_match = of_match_ptr("BUCK"#num), \ |
407 | .regulators_node = of_match_ptr("regulators"), \ |
408 | .id = MAX77802_BUCK##num, \ |
409 | .supply_name = "inb"#num, \ |
410 | .ops = &max77802_buck_dvs_ops, \ |
411 | .type = REGULATOR_VOLTAGE, \ |
412 | .owner = THIS_MODULE, \ |
413 | .min_uV = 750000, \ |
414 | .uV_step = 50000, \ |
415 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
416 | .n_voltages = 1 << 6, \ |
417 | .vsel_reg = MAX77802_REG_BUCK5OUT, \ |
418 | .vsel_mask = MAX77802_VSEL_MASK, \ |
419 | .enable_reg = MAX77802_REG_BUCK5CTRL, \ |
420 | .enable_mask = MAX77802_OPMODE_MASK, \ |
421 | .of_map_mode = max77802_map_mode, \ |
422 | } |
423 | |
424 | /* BUCKs 7-10 */ |
425 | #define regulator_77802_desc_buck7_10(num) { \ |
426 | .name = "BUCK"#num, \ |
427 | .of_match = of_match_ptr("BUCK"#num), \ |
428 | .regulators_node = of_match_ptr("regulators"), \ |
429 | .id = MAX77802_BUCK##num, \ |
430 | .supply_name = "inb"#num, \ |
431 | .ops = &max77802_buck_dvs_ops, \ |
432 | .type = REGULATOR_VOLTAGE, \ |
433 | .owner = THIS_MODULE, \ |
434 | .min_uV = 750000, \ |
435 | .uV_step = 50000, \ |
436 | .ramp_delay = MAX77802_RAMP_DELAY, \ |
437 | .n_voltages = 1 << 6, \ |
438 | .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ |
439 | .vsel_mask = MAX77802_VSEL_MASK, \ |
440 | .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ |
441 | .enable_mask = MAX77802_OPMODE_MASK, \ |
442 | .of_map_mode = max77802_map_mode, \ |
443 | } |
444 | |
445 | static const struct regulator_desc regulators[] = { |
446 | regulator_77802_desc_16_buck(1), |
447 | regulator_77802_desc_234_buck(2), |
448 | regulator_77802_desc_234_buck(3), |
449 | regulator_77802_desc_234_buck(4), |
450 | regulator_77802_desc_buck5(5), |
451 | regulator_77802_desc_16_buck(6), |
452 | regulator_77802_desc_buck7_10(7), |
453 | regulator_77802_desc_buck7_10(8), |
454 | regulator_77802_desc_buck7_10(9), |
455 | regulator_77802_desc_buck7_10(10), |
456 | regulator_77802_desc_n_ldo(1, 10, 2), |
457 | regulator_77802_desc_n_ldo(2, 10, 1), |
458 | regulator_77802_desc_p_ldo(3, 3, 2), |
459 | regulator_77802_desc_p_ldo(4, 6, 1), |
460 | regulator_77802_desc_p_ldo(5, 3, 1), |
461 | regulator_77802_desc_p_ldo(6, 3, 1), |
462 | regulator_77802_desc_p_ldo(7, 3, 1), |
463 | regulator_77802_desc_n_ldo(8, 1, 1), |
464 | regulator_77802_desc_p_ldo(9, 5, 1), |
465 | regulator_77802_desc_p_ldo(10, 4, 1), |
466 | regulator_77802_desc_p_ldo(11, 4, 1), |
467 | regulator_77802_desc_p_ldo(12, 9, 1), |
468 | regulator_77802_desc_p_ldo(13, 4, 1), |
469 | regulator_77802_desc_p_ldo(14, 4, 1), |
470 | regulator_77802_desc_n_ldo(15, 1, 1), |
471 | regulator_77802_desc_n_ldo(17, 2, 1), |
472 | regulator_77802_desc_p_ldo(18, 7, 1), |
473 | regulator_77802_desc_p_ldo(19, 5, 1), |
474 | regulator_77802_desc_p_ldo(20, 7, 2), |
475 | regulator_77802_desc_p_ldo(21, 6, 2), |
476 | regulator_77802_desc_p_ldo(23, 9, 1), |
477 | regulator_77802_desc_p_ldo(24, 6, 1), |
478 | regulator_77802_desc_p_ldo(25, 9, 1), |
479 | regulator_77802_desc_p_ldo(26, 9, 1), |
480 | regulator_77802_desc_n_ldo(27, 2, 1), |
481 | regulator_77802_desc_p_ldo(28, 7, 1), |
482 | regulator_77802_desc_p_ldo(29, 7, 1), |
483 | regulator_77802_desc_n_ldo(30, 2, 1), |
484 | regulator_77802_desc_p_ldo(32, 9, 1), |
485 | regulator_77802_desc_p_ldo(33, 6, 1), |
486 | regulator_77802_desc_p_ldo(34, 9, 1), |
487 | regulator_77802_desc_n_ldo(35, 2, 1), |
488 | }; |
489 | |
490 | static int max77802_pmic_probe(struct platform_device *pdev) |
491 | { |
492 | struct max77686_dev *iodev = dev_get_drvdata(dev: pdev->dev.parent); |
493 | struct max77802_regulator_prv *max77802; |
494 | int i, val; |
495 | struct regulator_config config = { }; |
496 | |
497 | max77802 = devm_kzalloc(dev: &pdev->dev, |
498 | size: sizeof(struct max77802_regulator_prv), |
499 | GFP_KERNEL); |
500 | if (!max77802) |
501 | return -ENOMEM; |
502 | |
503 | config.dev = iodev->dev; |
504 | config.regmap = iodev->regmap; |
505 | config.driver_data = max77802; |
506 | platform_set_drvdata(pdev, data: max77802); |
507 | |
508 | for (i = 0; i < MAX77802_REG_MAX; i++) { |
509 | struct regulator_dev *rdev; |
510 | unsigned int id = regulators[i].id; |
511 | int shift = max77802_get_opmode_shift(id); |
512 | int ret; |
513 | |
514 | ret = regmap_read(map: iodev->regmap, reg: regulators[i].enable_reg, val: &val); |
515 | if (ret < 0) { |
516 | dev_warn(&pdev->dev, |
517 | "cannot read current mode for %d\n" , i); |
518 | val = MAX77802_OPMODE_NORMAL; |
519 | } else { |
520 | val = val >> shift & MAX77802_OPMODE_MASK; |
521 | } |
522 | |
523 | /* |
524 | * If the regulator is disabled and the system warm rebooted, |
525 | * the hardware reports OFF as the regulator operating mode. |
526 | * Default to operating mode NORMAL in that case. |
527 | */ |
528 | if (id < ARRAY_SIZE(max77802->opmode)) { |
529 | if (val == MAX77802_STATUS_OFF) |
530 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
531 | else |
532 | max77802->opmode[id] = val; |
533 | } |
534 | |
535 | rdev = devm_regulator_register(dev: &pdev->dev, |
536 | regulator_desc: ®ulators[i], config: &config); |
537 | if (IS_ERR(ptr: rdev)) { |
538 | ret = PTR_ERR(ptr: rdev); |
539 | dev_err(&pdev->dev, |
540 | "regulator init failed for %d: %d\n" , i, ret); |
541 | return ret; |
542 | } |
543 | } |
544 | |
545 | return 0; |
546 | } |
547 | |
548 | static const struct platform_device_id max77802_pmic_id[] = { |
549 | {"max77802-pmic" , 0}, |
550 | { }, |
551 | }; |
552 | MODULE_DEVICE_TABLE(platform, max77802_pmic_id); |
553 | |
554 | static struct platform_driver max77802_pmic_driver = { |
555 | .driver = { |
556 | .name = "max77802-pmic" , |
557 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
558 | }, |
559 | .probe = max77802_pmic_probe, |
560 | .id_table = max77802_pmic_id, |
561 | }; |
562 | |
563 | module_platform_driver(max77802_pmic_driver); |
564 | |
565 | MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver" ); |
566 | MODULE_AUTHOR("Simon Glass <sjg@chromium.org>" ); |
567 | MODULE_LICENSE("GPL" ); |
568 | |