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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 | |
e6f2f805 JMC |
13 | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/bug.h> | |
16 | #include <linux/err.h> | |
e6f2f805 | 17 | #include <linux/slab.h> |
ca1c8e93 | 18 | #include <linux/module.h> |
e6f2f805 JMC |
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> | |
5356e0da | 25 | #include <dt-bindings/regulator/maxim,max77802.h> |
e6f2f805 JMC |
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 | ||
0505be71 | 42 | #define MAX77802_STATUS_OFF 0x0 |
e6fb2aac | 43 | #define MAX77802_OFF_PWRREQ 0x1 |
2e0eaa1a | 44 | #define MAX77802_LP_PWRREQ 0x2 |
e6fb2aac | 45 | |
e6f2f805 JMC |
46 | /* MAX77802 has two register formats: 2-bit and 4-bit */ |
47 | static const unsigned int ramp_table_77802_2bit[] = { | |
48 | 12500, | |
49 | 25000, | |
50 | 50000, | |
51 | 100000, | |
52 | }; | |
53 | ||
54 | static unsigned int ramp_table_77802_4bit[] = { | |
55 | 1000, 2000, 3030, 4000, | |
56 | 5000, 5880, 7140, 8330, | |
57 | 9090, 10000, 11110, 12500, | |
58 | 16670, 25000, 50000, 100000, | |
59 | }; | |
60 | ||
61 | struct max77802_regulator_prv { | |
ff633bea | 62 | /* Array indexed by regulator id */ |
e6f2f805 JMC |
63 | unsigned int opmode[MAX77802_REG_MAX]; |
64 | }; | |
65 | ||
4d7078e6 | 66 | static inline unsigned int max77802_map_mode(unsigned int mode) |
efbe5199 JMC |
67 | { |
68 | return mode == MAX77802_OPMODE_NORMAL ? | |
69 | REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; | |
70 | } | |
71 | ||
e6f2f805 JMC |
72 | static int max77802_get_opmode_shift(int id) |
73 | { | |
74 | if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && | |
75 | id <= MAX77802_BUCK10)) | |
76 | return 0; | |
77 | ||
78 | if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) | |
79 | return MAX77802_OPMODE_BUCK234_SHIFT; | |
80 | ||
81 | if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) | |
82 | return MAX77802_OPMODE_SHIFT_LDO; | |
83 | ||
84 | return -EINVAL; | |
85 | } | |
86 | ||
e6fb2aac JMC |
87 | /** |
88 | * max77802_set_suspend_disable - Disable the regulator during system suspend | |
89 | * @rdev: regulator to mark as disabled | |
e6f2f805 | 90 | * |
e6fb2aac JMC |
91 | * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. |
92 | * Configure the regulator so the PMIC will turn it OFF during system suspend. | |
e6f2f805 | 93 | */ |
e6fb2aac | 94 | static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
e6f2f805 | 95 | { |
e6fb2aac | 96 | unsigned int val = MAX77802_OFF_PWRREQ; |
e6f2f805 JMC |
97 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
98 | int id = rdev_get_id(rdev); | |
99 | int shift = max77802_get_opmode_shift(id); | |
100 | ||
101 | max77802->opmode[id] = val; | |
102 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
103 | rdev->desc->enable_mask, val << shift); | |
104 | } | |
105 | ||
efbe5199 JMC |
106 | /* |
107 | * Some LDOs support Low Power Mode while the system is running. | |
108 | * | |
109 | * LDOs 1, 3, 20, 21. | |
110 | */ | |
111 | static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
112 | { | |
113 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
114 | int id = rdev_get_id(rdev); | |
115 | unsigned int val; | |
116 | int shift = max77802_get_opmode_shift(id); | |
117 | ||
118 | switch (mode) { | |
119 | case REGULATOR_MODE_STANDBY: | |
120 | val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ | |
121 | break; | |
122 | case REGULATOR_MODE_NORMAL: | |
123 | val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ | |
124 | break; | |
125 | default: | |
126 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
127 | rdev->desc->name, mode); | |
128 | return -EINVAL; | |
129 | } | |
130 | ||
131 | max77802->opmode[id] = val; | |
132 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
133 | rdev->desc->enable_mask, val << shift); | |
134 | } | |
135 | ||
136 | static unsigned max77802_get_mode(struct regulator_dev *rdev) | |
137 | { | |
138 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
139 | int id = rdev_get_id(rdev); | |
140 | ||
141 | return max77802_map_mode(max77802->opmode[id]); | |
142 | } | |
143 | ||
2e0eaa1a JMC |
144 | /** |
145 | * max77802_set_suspend_mode - set regulator opmode when the system is suspended | |
146 | * @rdev: regulator to change mode | |
147 | * @mode: operating mode to be set | |
e6f2f805 | 148 | * |
2e0eaa1a JMC |
149 | * Will set the operating mode for the regulators during system suspend. |
150 | * This function is valid for the three different enable control logics: | |
e6f2f805 | 151 | * |
2e0eaa1a JMC |
152 | * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
153 | * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) | |
154 | * Enable Control Logic3 by PWRREQ (LDO 3) | |
155 | * | |
156 | * If setting the regulator mode fails, the function only warns but does | |
157 | * not return an error code to avoid the regulator core to stop setting | |
158 | * the operating mode for the remaining regulators. | |
e6f2f805 | 159 | */ |
2e0eaa1a JMC |
160 | static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
161 | unsigned int mode) | |
e6f2f805 JMC |
162 | { |
163 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
164 | int id = rdev_get_id(rdev); | |
165 | unsigned int val; | |
166 | int shift = max77802_get_opmode_shift(id); | |
167 | ||
2e0eaa1a JMC |
168 | /* |
169 | * If the regulator has been disabled for suspend | |
170 | * then is invalid to try setting a suspend mode. | |
171 | */ | |
bf275375 | 172 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
2e0eaa1a | 173 | dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", |
e6f2f805 | 174 | rdev->desc->name, mode); |
2e0eaa1a | 175 | return 0; |
e6f2f805 JMC |
176 | } |
177 | ||
e6f2f805 | 178 | switch (mode) { |
2e0eaa1a JMC |
179 | case REGULATOR_MODE_STANDBY: |
180 | /* | |
181 | * If the regulator opmode is normal then enable | |
182 | * ON in Low Power Mode by PWRREQ. If the mode is | |
183 | * already Low Power then no action is required. | |
184 | */ | |
185 | if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) | |
186 | val = MAX77802_LP_PWRREQ; | |
187 | else | |
188 | return 0; | |
e6f2f805 | 189 | break; |
2e0eaa1a JMC |
190 | case REGULATOR_MODE_NORMAL: |
191 | /* | |
192 | * If the regulator operating mode is Low Power then | |
193 | * normal is not a valid opmode in suspend. If the | |
194 | * mode is already normal then no action is required. | |
195 | */ | |
196 | if (max77802->opmode[id] == MAX77802_OPMODE_LP) | |
197 | dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", | |
198 | rdev->desc->name, mode); | |
199 | return 0; | |
e6f2f805 JMC |
200 | default: |
201 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
202 | rdev->desc->name, mode); | |
203 | return -EINVAL; | |
204 | } | |
205 | ||
e6f2f805 JMC |
206 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
207 | rdev->desc->enable_mask, val << shift); | |
208 | } | |
209 | ||
210 | static int max77802_enable(struct regulator_dev *rdev) | |
211 | { | |
212 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
213 | int id = rdev_get_id(rdev); | |
214 | int shift = max77802_get_opmode_shift(id); | |
215 | ||
e6fb2aac JMC |
216 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
217 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; | |
218 | ||
e6f2f805 JMC |
219 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
220 | rdev->desc->enable_mask, | |
221 | max77802->opmode[id] << shift); | |
222 | } | |
223 | ||
224 | static int max77802_find_ramp_value(struct regulator_dev *rdev, | |
225 | const unsigned int limits[], int size, | |
226 | unsigned int ramp_delay) | |
227 | { | |
228 | int i; | |
229 | ||
230 | for (i = 0; i < size; i++) { | |
231 | if (ramp_delay <= limits[i]) | |
232 | return i; | |
233 | } | |
234 | ||
235 | /* Use maximum value for no ramp control */ | |
236 | dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n", | |
237 | rdev->desc->name, ramp_delay); | |
238 | return size - 1; | |
239 | } | |
240 | ||
241 | /* Used for BUCKs 2-4 */ | |
242 | static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev, | |
243 | int ramp_delay) | |
244 | { | |
245 | int id = rdev_get_id(rdev); | |
246 | unsigned int ramp_value; | |
247 | ||
248 | if (id > MAX77802_BUCK4) { | |
c79fba83 CIK |
249 | dev_warn(&rdev->dev, |
250 | "%s: regulator: ramp delay not supported\n", | |
251 | rdev->desc->name); | |
e6f2f805 JMC |
252 | return -EINVAL; |
253 | } | |
254 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit, | |
255 | ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay); | |
256 | ||
257 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
258 | MAX77802_RAMP_RATE_MASK_2BIT, | |
259 | ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT); | |
260 | } | |
261 | ||
262 | /* For BUCK1, 6 */ | |
263 | static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev, | |
264 | int ramp_delay) | |
265 | { | |
266 | unsigned int ramp_value; | |
267 | ||
268 | ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit, | |
269 | ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay); | |
270 | ||
271 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
272 | MAX77802_RAMP_RATE_MASK_4BIT, | |
273 | ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT); | |
274 | } | |
275 | ||
276 | /* | |
277 | * LDOs 2, 4-19, 22-35 | |
278 | */ | |
0301987a | 279 | static const struct regulator_ops max77802_ldo_ops_logic1 = { |
e6f2f805 JMC |
280 | .list_voltage = regulator_list_voltage_linear, |
281 | .map_voltage = regulator_map_voltage_linear, | |
282 | .is_enabled = regulator_is_enabled_regmap, | |
283 | .enable = max77802_enable, | |
284 | .disable = regulator_disable_regmap, | |
285 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
286 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
287 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
e6fb2aac | 288 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 289 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
290 | }; |
291 | ||
292 | /* | |
293 | * LDOs 1, 20, 21, 3 | |
294 | */ | |
0301987a | 295 | static const struct regulator_ops max77802_ldo_ops_logic2 = { |
e6f2f805 JMC |
296 | .list_voltage = regulator_list_voltage_linear, |
297 | .map_voltage = regulator_map_voltage_linear, | |
298 | .is_enabled = regulator_is_enabled_regmap, | |
299 | .enable = max77802_enable, | |
300 | .disable = regulator_disable_regmap, | |
301 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
302 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
303 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
efbe5199 JMC |
304 | .set_mode = max77802_set_mode, |
305 | .get_mode = max77802_get_mode, | |
2e0eaa1a | 306 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
307 | }; |
308 | ||
309 | /* BUCKS 1, 6 */ | |
0301987a | 310 | static const struct regulator_ops max77802_buck_16_dvs_ops = { |
e6f2f805 JMC |
311 | .list_voltage = regulator_list_voltage_linear, |
312 | .map_voltage = regulator_map_voltage_linear, | |
313 | .is_enabled = regulator_is_enabled_regmap, | |
314 | .enable = max77802_enable, | |
315 | .disable = regulator_disable_regmap, | |
316 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
317 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
318 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
319 | .set_ramp_delay = max77802_set_ramp_delay_4bit, | |
e6fb2aac | 320 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
321 | }; |
322 | ||
b0615f1d | 323 | /* BUCKs 2-4 */ |
0301987a | 324 | static const struct regulator_ops max77802_buck_234_ops = { |
b0615f1d JMC |
325 | .list_voltage = regulator_list_voltage_linear, |
326 | .map_voltage = regulator_map_voltage_linear, | |
327 | .is_enabled = regulator_is_enabled_regmap, | |
328 | .enable = max77802_enable, | |
329 | .disable = regulator_disable_regmap, | |
330 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
331 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
332 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
333 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
b0615f1d | 334 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 335 | .set_suspend_mode = max77802_set_suspend_mode, |
b0615f1d JMC |
336 | }; |
337 | ||
338 | /* BUCKs 5, 7-10 */ | |
0301987a | 339 | static const struct regulator_ops max77802_buck_dvs_ops = { |
e6f2f805 JMC |
340 | .list_voltage = regulator_list_voltage_linear, |
341 | .map_voltage = regulator_map_voltage_linear, | |
342 | .is_enabled = regulator_is_enabled_regmap, | |
343 | .enable = max77802_enable, | |
344 | .disable = regulator_disable_regmap, | |
345 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
346 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
347 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
348 | .set_ramp_delay = max77802_set_ramp_delay_2bit, | |
e6fb2aac | 349 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
350 | }; |
351 | ||
352 | /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ | |
353 | #define regulator_77802_desc_p_ldo(num, supply, log) { \ | |
354 | .name = "LDO"#num, \ | |
ff633bea KK |
355 | .of_match = of_match_ptr("LDO"#num), \ |
356 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
357 | .id = MAX77802_LDO##num, \ |
358 | .supply_name = "inl"#supply, \ | |
359 | .ops = &max77802_ldo_ops_logic##log, \ | |
360 | .type = REGULATOR_VOLTAGE, \ | |
361 | .owner = THIS_MODULE, \ | |
362 | .min_uV = 800000, \ | |
363 | .uV_step = 50000, \ | |
364 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
365 | .n_voltages = 1 << 6, \ | |
366 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
367 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
368 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
369 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 370 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
371 | } |
372 | ||
373 | /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ | |
374 | #define regulator_77802_desc_n_ldo(num, supply, log) { \ | |
375 | .name = "LDO"#num, \ | |
ff633bea KK |
376 | .of_match = of_match_ptr("LDO"#num), \ |
377 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
378 | .id = MAX77802_LDO##num, \ |
379 | .supply_name = "inl"#supply, \ | |
380 | .ops = &max77802_ldo_ops_logic##log, \ | |
381 | .type = REGULATOR_VOLTAGE, \ | |
382 | .owner = THIS_MODULE, \ | |
383 | .min_uV = 800000, \ | |
384 | .uV_step = 25000, \ | |
385 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
386 | .n_voltages = 1 << 6, \ | |
387 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
388 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
389 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
390 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 391 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
392 | } |
393 | ||
394 | /* BUCKs 1, 6 */ | |
395 | #define regulator_77802_desc_16_buck(num) { \ | |
396 | .name = "BUCK"#num, \ | |
ff633bea KK |
397 | .of_match = of_match_ptr("BUCK"#num), \ |
398 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
399 | .id = MAX77802_BUCK##num, \ |
400 | .supply_name = "inb"#num, \ | |
401 | .ops = &max77802_buck_16_dvs_ops, \ | |
402 | .type = REGULATOR_VOLTAGE, \ | |
403 | .owner = THIS_MODULE, \ | |
404 | .min_uV = 612500, \ | |
405 | .uV_step = 6250, \ | |
406 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
407 | .n_voltages = 1 << 8, \ | |
408 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
409 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
410 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ | |
411 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 412 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
413 | } |
414 | ||
415 | /* BUCKS 2-4 */ | |
416 | #define regulator_77802_desc_234_buck(num) { \ | |
417 | .name = "BUCK"#num, \ | |
ff633bea KK |
418 | .of_match = of_match_ptr("BUCK"#num), \ |
419 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
420 | .id = MAX77802_BUCK##num, \ |
421 | .supply_name = "inb"#num, \ | |
b0615f1d | 422 | .ops = &max77802_buck_234_ops, \ |
e6f2f805 JMC |
423 | .type = REGULATOR_VOLTAGE, \ |
424 | .owner = THIS_MODULE, \ | |
425 | .min_uV = 600000, \ | |
426 | .uV_step = 6250, \ | |
427 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
428 | .n_voltages = 0x91, \ | |
429 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
430 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
431 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ | |
432 | .enable_mask = MAX77802_OPMODE_MASK << \ | |
433 | MAX77802_OPMODE_BUCK234_SHIFT, \ | |
45fc84c6 | 434 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
435 | } |
436 | ||
437 | /* BUCK 5 */ | |
438 | #define regulator_77802_desc_buck5(num) { \ | |
439 | .name = "BUCK"#num, \ | |
ff633bea KK |
440 | .of_match = of_match_ptr("BUCK"#num), \ |
441 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
442 | .id = MAX77802_BUCK##num, \ |
443 | .supply_name = "inb"#num, \ | |
444 | .ops = &max77802_buck_dvs_ops, \ | |
445 | .type = REGULATOR_VOLTAGE, \ | |
446 | .owner = THIS_MODULE, \ | |
447 | .min_uV = 750000, \ | |
448 | .uV_step = 50000, \ | |
449 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
450 | .n_voltages = 1 << 6, \ | |
451 | .vsel_reg = MAX77802_REG_BUCK5OUT, \ | |
452 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
453 | .enable_reg = MAX77802_REG_BUCK5CTRL, \ | |
454 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 455 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
456 | } |
457 | ||
458 | /* BUCKs 7-10 */ | |
459 | #define regulator_77802_desc_buck7_10(num) { \ | |
460 | .name = "BUCK"#num, \ | |
ff633bea KK |
461 | .of_match = of_match_ptr("BUCK"#num), \ |
462 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
463 | .id = MAX77802_BUCK##num, \ |
464 | .supply_name = "inb"#num, \ | |
465 | .ops = &max77802_buck_dvs_ops, \ | |
466 | .type = REGULATOR_VOLTAGE, \ | |
467 | .owner = THIS_MODULE, \ | |
468 | .min_uV = 750000, \ | |
469 | .uV_step = 50000, \ | |
470 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
471 | .n_voltages = 1 << 6, \ | |
472 | .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ | |
473 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
474 | .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ | |
475 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 476 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
477 | } |
478 | ||
6c4159a5 | 479 | static const struct regulator_desc regulators[] = { |
e6f2f805 JMC |
480 | regulator_77802_desc_16_buck(1), |
481 | regulator_77802_desc_234_buck(2), | |
482 | regulator_77802_desc_234_buck(3), | |
483 | regulator_77802_desc_234_buck(4), | |
484 | regulator_77802_desc_buck5(5), | |
485 | regulator_77802_desc_16_buck(6), | |
486 | regulator_77802_desc_buck7_10(7), | |
487 | regulator_77802_desc_buck7_10(8), | |
488 | regulator_77802_desc_buck7_10(9), | |
489 | regulator_77802_desc_buck7_10(10), | |
490 | regulator_77802_desc_n_ldo(1, 10, 2), | |
491 | regulator_77802_desc_n_ldo(2, 10, 1), | |
492 | regulator_77802_desc_p_ldo(3, 3, 2), | |
493 | regulator_77802_desc_p_ldo(4, 6, 1), | |
494 | regulator_77802_desc_p_ldo(5, 3, 1), | |
495 | regulator_77802_desc_p_ldo(6, 3, 1), | |
496 | regulator_77802_desc_p_ldo(7, 3, 1), | |
497 | regulator_77802_desc_n_ldo(8, 1, 1), | |
498 | regulator_77802_desc_p_ldo(9, 5, 1), | |
499 | regulator_77802_desc_p_ldo(10, 4, 1), | |
500 | regulator_77802_desc_p_ldo(11, 4, 1), | |
501 | regulator_77802_desc_p_ldo(12, 9, 1), | |
502 | regulator_77802_desc_p_ldo(13, 4, 1), | |
503 | regulator_77802_desc_p_ldo(14, 4, 1), | |
504 | regulator_77802_desc_n_ldo(15, 1, 1), | |
505 | regulator_77802_desc_n_ldo(17, 2, 1), | |
506 | regulator_77802_desc_p_ldo(18, 7, 1), | |
507 | regulator_77802_desc_p_ldo(19, 5, 1), | |
508 | regulator_77802_desc_p_ldo(20, 7, 2), | |
509 | regulator_77802_desc_p_ldo(21, 6, 2), | |
510 | regulator_77802_desc_p_ldo(23, 9, 1), | |
511 | regulator_77802_desc_p_ldo(24, 6, 1), | |
512 | regulator_77802_desc_p_ldo(25, 9, 1), | |
513 | regulator_77802_desc_p_ldo(26, 9, 1), | |
514 | regulator_77802_desc_n_ldo(27, 2, 1), | |
515 | regulator_77802_desc_p_ldo(28, 7, 1), | |
516 | regulator_77802_desc_p_ldo(29, 7, 1), | |
517 | regulator_77802_desc_n_ldo(30, 2, 1), | |
518 | regulator_77802_desc_p_ldo(32, 9, 1), | |
519 | regulator_77802_desc_p_ldo(33, 6, 1), | |
520 | regulator_77802_desc_p_ldo(34, 9, 1), | |
521 | regulator_77802_desc_n_ldo(35, 2, 1), | |
522 | }; | |
523 | ||
e6f2f805 JMC |
524 | static int max77802_pmic_probe(struct platform_device *pdev) |
525 | { | |
526 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
e6f2f805 | 527 | struct max77802_regulator_prv *max77802; |
ff633bea | 528 | int i, val; |
e6f2f805 JMC |
529 | struct regulator_config config = { }; |
530 | ||
e6f2f805 JMC |
531 | max77802 = devm_kzalloc(&pdev->dev, |
532 | sizeof(struct max77802_regulator_prv), | |
533 | GFP_KERNEL); | |
534 | if (!max77802) | |
535 | return -ENOMEM; | |
536 | ||
e6f2f805 JMC |
537 | config.dev = iodev->dev; |
538 | config.regmap = iodev->regmap; | |
539 | config.driver_data = max77802; | |
540 | platform_set_drvdata(pdev, max77802); | |
541 | ||
542 | for (i = 0; i < MAX77802_REG_MAX; i++) { | |
543 | struct regulator_dev *rdev; | |
ff633bea | 544 | int id = regulators[i].id; |
e6f2f805 | 545 | int shift = max77802_get_opmode_shift(id); |
ff633bea | 546 | int ret; |
e6f2f805 JMC |
547 | |
548 | ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); | |
a26ed45c KK |
549 | if (ret < 0) { |
550 | dev_warn(&pdev->dev, | |
551 | "cannot read current mode for %d\n", i); | |
552 | val = MAX77802_OPMODE_NORMAL; | |
553 | } else { | |
554 | val = val >> shift & MAX77802_OPMODE_MASK; | |
555 | } | |
aea8dfb9 JMC |
556 | |
557 | /* | |
558 | * If the regulator is disabled and the system warm rebooted, | |
559 | * the hardware reports OFF as the regulator operating mode. | |
560 | * Default to operating mode NORMAL in that case. | |
561 | */ | |
0505be71 | 562 | if (val == MAX77802_STATUS_OFF) |
aea8dfb9 JMC |
563 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
564 | else | |
565 | max77802->opmode[id] = val; | |
e6f2f805 JMC |
566 | |
567 | rdev = devm_regulator_register(&pdev->dev, | |
568 | ®ulators[i], &config); | |
569 | if (IS_ERR(rdev)) { | |
ff633bea | 570 | ret = PTR_ERR(rdev); |
e6f2f805 | 571 | dev_err(&pdev->dev, |
ff633bea KK |
572 | "regulator init failed for %d: %d\n", i, ret); |
573 | return ret; | |
e6f2f805 JMC |
574 | } |
575 | } | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
580 | static const struct platform_device_id max77802_pmic_id[] = { | |
581 | {"max77802-pmic", 0}, | |
582 | { }, | |
583 | }; | |
584 | MODULE_DEVICE_TABLE(platform, max77802_pmic_id); | |
585 | ||
586 | static struct platform_driver max77802_pmic_driver = { | |
587 | .driver = { | |
588 | .name = "max77802-pmic", | |
e6f2f805 JMC |
589 | }, |
590 | .probe = max77802_pmic_probe, | |
591 | .id_table = max77802_pmic_id, | |
592 | }; | |
593 | ||
594 | module_platform_driver(max77802_pmic_driver); | |
595 | ||
596 | MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); | |
597 | MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); | |
598 | MODULE_LICENSE("GPL"); |