]>
Commit | Line | Data |
---|---|---|
5e9384c7 KK |
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 | |
8cdded98 | 46 | static const unsigned int max77802_buck234_ramp_table[] = { |
e6f2f805 JMC |
47 | 12500, |
48 | 25000, | |
49 | 50000, | |
50 | 100000, | |
51 | }; | |
52 | ||
8cdded98 | 53 | static const unsigned int max77802_buck16_ramp_table[] = { |
e6f2f805 JMC |
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 { | |
ff633bea | 61 | /* Array indexed by regulator id */ |
e6f2f805 JMC |
62 | unsigned int opmode[MAX77802_REG_MAX]; |
63 | }; | |
64 | ||
4d7078e6 | 65 | static inline unsigned int max77802_map_mode(unsigned int mode) |
efbe5199 JMC |
66 | { |
67 | return mode == MAX77802_OPMODE_NORMAL ? | |
68 | REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; | |
69 | } | |
70 | ||
e6f2f805 JMC |
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 | ||
e6fb2aac JMC |
86 | /** |
87 | * max77802_set_suspend_disable - Disable the regulator during system suspend | |
88 | * @rdev: regulator to mark as disabled | |
e6f2f805 | 89 | * |
e6fb2aac JMC |
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. | |
e6f2f805 | 92 | */ |
e6fb2aac | 93 | static int max77802_set_suspend_disable(struct regulator_dev *rdev) |
e6f2f805 | 94 | { |
e6fb2aac | 95 | unsigned int val = MAX77802_OFF_PWRREQ; |
e6f2f805 JMC |
96 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); |
97 | int id = rdev_get_id(rdev); | |
98 | int shift = max77802_get_opmode_shift(id); | |
99 | ||
100 | max77802->opmode[id] = val; | |
101 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
102 | rdev->desc->enable_mask, val << shift); | |
103 | } | |
104 | ||
efbe5199 JMC |
105 | /* |
106 | * Some LDOs support Low Power Mode while the system is running. | |
107 | * | |
108 | * LDOs 1, 3, 20, 21. | |
109 | */ | |
110 | static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
111 | { | |
112 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
113 | int id = rdev_get_id(rdev); | |
114 | unsigned int val; | |
115 | int shift = max77802_get_opmode_shift(id); | |
116 | ||
117 | switch (mode) { | |
118 | case REGULATOR_MODE_STANDBY: | |
119 | val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ | |
120 | break; | |
121 | case REGULATOR_MODE_NORMAL: | |
122 | val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ | |
123 | break; | |
124 | default: | |
125 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
126 | rdev->desc->name, mode); | |
127 | return -EINVAL; | |
128 | } | |
129 | ||
130 | max77802->opmode[id] = val; | |
131 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, | |
132 | rdev->desc->enable_mask, val << shift); | |
133 | } | |
134 | ||
135 | static unsigned max77802_get_mode(struct regulator_dev *rdev) | |
136 | { | |
137 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
138 | int id = rdev_get_id(rdev); | |
139 | ||
140 | return max77802_map_mode(max77802->opmode[id]); | |
141 | } | |
142 | ||
2e0eaa1a JMC |
143 | /** |
144 | * max77802_set_suspend_mode - set regulator opmode when the system is suspended | |
145 | * @rdev: regulator to change mode | |
146 | * @mode: operating mode to be set | |
e6f2f805 | 147 | * |
2e0eaa1a JMC |
148 | * Will set the operating mode for the regulators during system suspend. |
149 | * This function is valid for the three different enable control logics: | |
e6f2f805 | 150 | * |
2e0eaa1a JMC |
151 | * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) |
152 | * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) | |
153 | * Enable Control Logic3 by PWRREQ (LDO 3) | |
154 | * | |
155 | * If setting the regulator mode fails, the function only warns but does | |
156 | * not return an error code to avoid the regulator core to stop setting | |
157 | * the operating mode for the remaining regulators. | |
e6f2f805 | 158 | */ |
2e0eaa1a JMC |
159 | static int max77802_set_suspend_mode(struct regulator_dev *rdev, |
160 | unsigned int mode) | |
e6f2f805 JMC |
161 | { |
162 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
163 | int id = rdev_get_id(rdev); | |
164 | unsigned int val; | |
165 | int shift = max77802_get_opmode_shift(id); | |
166 | ||
2e0eaa1a JMC |
167 | /* |
168 | * If the regulator has been disabled for suspend | |
169 | * then is invalid to try setting a suspend mode. | |
170 | */ | |
bf275375 | 171 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { |
2e0eaa1a | 172 | dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", |
e6f2f805 | 173 | rdev->desc->name, mode); |
2e0eaa1a | 174 | return 0; |
e6f2f805 JMC |
175 | } |
176 | ||
e6f2f805 | 177 | switch (mode) { |
2e0eaa1a JMC |
178 | case REGULATOR_MODE_STANDBY: |
179 | /* | |
180 | * If the regulator opmode is normal then enable | |
181 | * ON in Low Power Mode by PWRREQ. If the mode is | |
182 | * already Low Power then no action is required. | |
183 | */ | |
184 | if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) | |
185 | val = MAX77802_LP_PWRREQ; | |
186 | else | |
187 | return 0; | |
e6f2f805 | 188 | break; |
2e0eaa1a JMC |
189 | case REGULATOR_MODE_NORMAL: |
190 | /* | |
191 | * If the regulator operating mode is Low Power then | |
192 | * normal is not a valid opmode in suspend. If the | |
193 | * mode is already normal then no action is required. | |
194 | */ | |
195 | if (max77802->opmode[id] == MAX77802_OPMODE_LP) | |
196 | dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", | |
197 | rdev->desc->name, mode); | |
198 | return 0; | |
e6f2f805 JMC |
199 | default: |
200 | dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", | |
201 | rdev->desc->name, mode); | |
202 | return -EINVAL; | |
203 | } | |
204 | ||
e6f2f805 JMC |
205 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
206 | rdev->desc->enable_mask, val << shift); | |
207 | } | |
208 | ||
209 | static int max77802_enable(struct regulator_dev *rdev) | |
210 | { | |
211 | struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); | |
212 | int id = rdev_get_id(rdev); | |
213 | int shift = max77802_get_opmode_shift(id); | |
214 | ||
e6fb2aac JMC |
215 | if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) |
216 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; | |
217 | ||
e6f2f805 JMC |
218 | return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, |
219 | rdev->desc->enable_mask, | |
220 | max77802->opmode[id] << shift); | |
221 | } | |
222 | ||
e6f2f805 JMC |
223 | /* |
224 | * LDOs 2, 4-19, 22-35 | |
225 | */ | |
0301987a | 226 | static const struct regulator_ops max77802_ldo_ops_logic1 = { |
e6f2f805 JMC |
227 | .list_voltage = regulator_list_voltage_linear, |
228 | .map_voltage = regulator_map_voltage_linear, | |
229 | .is_enabled = regulator_is_enabled_regmap, | |
230 | .enable = max77802_enable, | |
231 | .disable = regulator_disable_regmap, | |
232 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
233 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
234 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
e6fb2aac | 235 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 236 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
237 | }; |
238 | ||
239 | /* | |
240 | * LDOs 1, 20, 21, 3 | |
241 | */ | |
0301987a | 242 | static const struct regulator_ops max77802_ldo_ops_logic2 = { |
e6f2f805 JMC |
243 | .list_voltage = regulator_list_voltage_linear, |
244 | .map_voltage = regulator_map_voltage_linear, | |
245 | .is_enabled = regulator_is_enabled_regmap, | |
246 | .enable = max77802_enable, | |
247 | .disable = regulator_disable_regmap, | |
248 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
249 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
250 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
efbe5199 JMC |
251 | .set_mode = max77802_set_mode, |
252 | .get_mode = max77802_get_mode, | |
2e0eaa1a | 253 | .set_suspend_mode = max77802_set_suspend_mode, |
e6f2f805 JMC |
254 | }; |
255 | ||
256 | /* BUCKS 1, 6 */ | |
0301987a | 257 | static const struct regulator_ops max77802_buck_16_dvs_ops = { |
e6f2f805 JMC |
258 | .list_voltage = regulator_list_voltage_linear, |
259 | .map_voltage = regulator_map_voltage_linear, | |
260 | .is_enabled = regulator_is_enabled_regmap, | |
261 | .enable = max77802_enable, | |
262 | .disable = regulator_disable_regmap, | |
263 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
264 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
265 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
8cdded98 | 266 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
e6fb2aac | 267 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
268 | }; |
269 | ||
b0615f1d | 270 | /* BUCKs 2-4 */ |
0301987a | 271 | static const struct regulator_ops max77802_buck_234_ops = { |
b0615f1d JMC |
272 | .list_voltage = regulator_list_voltage_linear, |
273 | .map_voltage = regulator_map_voltage_linear, | |
274 | .is_enabled = regulator_is_enabled_regmap, | |
275 | .enable = max77802_enable, | |
276 | .disable = regulator_disable_regmap, | |
277 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
278 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
279 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
8cdded98 | 280 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
b0615f1d | 281 | .set_suspend_disable = max77802_set_suspend_disable, |
2e0eaa1a | 282 | .set_suspend_mode = max77802_set_suspend_mode, |
b0615f1d JMC |
283 | }; |
284 | ||
285 | /* BUCKs 5, 7-10 */ | |
0301987a | 286 | static const struct regulator_ops max77802_buck_dvs_ops = { |
e6f2f805 JMC |
287 | .list_voltage = regulator_list_voltage_linear, |
288 | .map_voltage = regulator_map_voltage_linear, | |
289 | .is_enabled = regulator_is_enabled_regmap, | |
290 | .enable = max77802_enable, | |
291 | .disable = regulator_disable_regmap, | |
292 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
293 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
294 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
e6fb2aac | 295 | .set_suspend_disable = max77802_set_suspend_disable, |
e6f2f805 JMC |
296 | }; |
297 | ||
298 | /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ | |
299 | #define regulator_77802_desc_p_ldo(num, supply, log) { \ | |
300 | .name = "LDO"#num, \ | |
ff633bea KK |
301 | .of_match = of_match_ptr("LDO"#num), \ |
302 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
303 | .id = MAX77802_LDO##num, \ |
304 | .supply_name = "inl"#supply, \ | |
305 | .ops = &max77802_ldo_ops_logic##log, \ | |
306 | .type = REGULATOR_VOLTAGE, \ | |
307 | .owner = THIS_MODULE, \ | |
308 | .min_uV = 800000, \ | |
309 | .uV_step = 50000, \ | |
310 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
311 | .n_voltages = 1 << 6, \ | |
312 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
313 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
314 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
315 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 316 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
317 | } |
318 | ||
319 | /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ | |
320 | #define regulator_77802_desc_n_ldo(num, supply, log) { \ | |
321 | .name = "LDO"#num, \ | |
ff633bea KK |
322 | .of_match = of_match_ptr("LDO"#num), \ |
323 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
324 | .id = MAX77802_LDO##num, \ |
325 | .supply_name = "inl"#supply, \ | |
326 | .ops = &max77802_ldo_ops_logic##log, \ | |
327 | .type = REGULATOR_VOLTAGE, \ | |
328 | .owner = THIS_MODULE, \ | |
329 | .min_uV = 800000, \ | |
330 | .uV_step = 25000, \ | |
331 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
332 | .n_voltages = 1 << 6, \ | |
333 | .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
334 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
335 | .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ | |
336 | .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ | |
45fc84c6 | 337 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
338 | } |
339 | ||
340 | /* BUCKs 1, 6 */ | |
341 | #define regulator_77802_desc_16_buck(num) { \ | |
342 | .name = "BUCK"#num, \ | |
ff633bea KK |
343 | .of_match = of_match_ptr("BUCK"#num), \ |
344 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
345 | .id = MAX77802_BUCK##num, \ |
346 | .supply_name = "inb"#num, \ | |
347 | .ops = &max77802_buck_16_dvs_ops, \ | |
348 | .type = REGULATOR_VOLTAGE, \ | |
349 | .owner = THIS_MODULE, \ | |
350 | .min_uV = 612500, \ | |
351 | .uV_step = 6250, \ | |
352 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
353 | .n_voltages = 1 << 8, \ | |
354 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
355 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
356 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ | |
357 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
8cdded98 AL |
358 | .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL, \ |
359 | .ramp_mask = MAX77802_RAMP_RATE_MASK_4BIT, \ | |
360 | .ramp_delay_table = max77802_buck16_ramp_table, \ | |
361 | .n_ramp_values = ARRAY_SIZE(max77802_buck16_ramp_table), \ | |
45fc84c6 | 362 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
363 | } |
364 | ||
365 | /* BUCKS 2-4 */ | |
366 | #define regulator_77802_desc_234_buck(num) { \ | |
367 | .name = "BUCK"#num, \ | |
ff633bea KK |
368 | .of_match = of_match_ptr("BUCK"#num), \ |
369 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
370 | .id = MAX77802_BUCK##num, \ |
371 | .supply_name = "inb"#num, \ | |
b0615f1d | 372 | .ops = &max77802_buck_234_ops, \ |
e6f2f805 JMC |
373 | .type = REGULATOR_VOLTAGE, \ |
374 | .owner = THIS_MODULE, \ | |
375 | .min_uV = 600000, \ | |
376 | .uV_step = 6250, \ | |
377 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
378 | .n_voltages = 0x91, \ | |
379 | .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ | |
380 | .vsel_mask = MAX77802_DVS_VSEL_MASK, \ | |
381 | .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ | |
382 | .enable_mask = MAX77802_OPMODE_MASK << \ | |
383 | MAX77802_OPMODE_BUCK234_SHIFT, \ | |
8cdded98 AL |
384 | .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ |
385 | .ramp_mask = MAX77802_RAMP_RATE_MASK_2BIT, \ | |
386 | .ramp_delay_table = max77802_buck234_ramp_table, \ | |
387 | .n_ramp_values = ARRAY_SIZE(max77802_buck234_ramp_table), \ | |
45fc84c6 | 388 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
389 | } |
390 | ||
391 | /* BUCK 5 */ | |
392 | #define regulator_77802_desc_buck5(num) { \ | |
393 | .name = "BUCK"#num, \ | |
ff633bea KK |
394 | .of_match = of_match_ptr("BUCK"#num), \ |
395 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
396 | .id = MAX77802_BUCK##num, \ |
397 | .supply_name = "inb"#num, \ | |
398 | .ops = &max77802_buck_dvs_ops, \ | |
399 | .type = REGULATOR_VOLTAGE, \ | |
400 | .owner = THIS_MODULE, \ | |
401 | .min_uV = 750000, \ | |
402 | .uV_step = 50000, \ | |
403 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
404 | .n_voltages = 1 << 6, \ | |
405 | .vsel_reg = MAX77802_REG_BUCK5OUT, \ | |
406 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
407 | .enable_reg = MAX77802_REG_BUCK5CTRL, \ | |
408 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 409 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
410 | } |
411 | ||
412 | /* BUCKs 7-10 */ | |
413 | #define regulator_77802_desc_buck7_10(num) { \ | |
414 | .name = "BUCK"#num, \ | |
ff633bea KK |
415 | .of_match = of_match_ptr("BUCK"#num), \ |
416 | .regulators_node = of_match_ptr("regulators"), \ | |
e6f2f805 JMC |
417 | .id = MAX77802_BUCK##num, \ |
418 | .supply_name = "inb"#num, \ | |
419 | .ops = &max77802_buck_dvs_ops, \ | |
420 | .type = REGULATOR_VOLTAGE, \ | |
421 | .owner = THIS_MODULE, \ | |
422 | .min_uV = 750000, \ | |
423 | .uV_step = 50000, \ | |
424 | .ramp_delay = MAX77802_RAMP_DELAY, \ | |
425 | .n_voltages = 1 << 6, \ | |
426 | .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ | |
427 | .vsel_mask = MAX77802_VSEL_MASK, \ | |
428 | .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ | |
429 | .enable_mask = MAX77802_OPMODE_MASK, \ | |
45fc84c6 | 430 | .of_map_mode = max77802_map_mode, \ |
e6f2f805 JMC |
431 | } |
432 | ||
6c4159a5 | 433 | static const struct regulator_desc regulators[] = { |
e6f2f805 JMC |
434 | regulator_77802_desc_16_buck(1), |
435 | regulator_77802_desc_234_buck(2), | |
436 | regulator_77802_desc_234_buck(3), | |
437 | regulator_77802_desc_234_buck(4), | |
438 | regulator_77802_desc_buck5(5), | |
439 | regulator_77802_desc_16_buck(6), | |
440 | regulator_77802_desc_buck7_10(7), | |
441 | regulator_77802_desc_buck7_10(8), | |
442 | regulator_77802_desc_buck7_10(9), | |
443 | regulator_77802_desc_buck7_10(10), | |
444 | regulator_77802_desc_n_ldo(1, 10, 2), | |
445 | regulator_77802_desc_n_ldo(2, 10, 1), | |
446 | regulator_77802_desc_p_ldo(3, 3, 2), | |
447 | regulator_77802_desc_p_ldo(4, 6, 1), | |
448 | regulator_77802_desc_p_ldo(5, 3, 1), | |
449 | regulator_77802_desc_p_ldo(6, 3, 1), | |
450 | regulator_77802_desc_p_ldo(7, 3, 1), | |
451 | regulator_77802_desc_n_ldo(8, 1, 1), | |
452 | regulator_77802_desc_p_ldo(9, 5, 1), | |
453 | regulator_77802_desc_p_ldo(10, 4, 1), | |
454 | regulator_77802_desc_p_ldo(11, 4, 1), | |
455 | regulator_77802_desc_p_ldo(12, 9, 1), | |
456 | regulator_77802_desc_p_ldo(13, 4, 1), | |
457 | regulator_77802_desc_p_ldo(14, 4, 1), | |
458 | regulator_77802_desc_n_ldo(15, 1, 1), | |
459 | regulator_77802_desc_n_ldo(17, 2, 1), | |
460 | regulator_77802_desc_p_ldo(18, 7, 1), | |
461 | regulator_77802_desc_p_ldo(19, 5, 1), | |
462 | regulator_77802_desc_p_ldo(20, 7, 2), | |
463 | regulator_77802_desc_p_ldo(21, 6, 2), | |
464 | regulator_77802_desc_p_ldo(23, 9, 1), | |
465 | regulator_77802_desc_p_ldo(24, 6, 1), | |
466 | regulator_77802_desc_p_ldo(25, 9, 1), | |
467 | regulator_77802_desc_p_ldo(26, 9, 1), | |
468 | regulator_77802_desc_n_ldo(27, 2, 1), | |
469 | regulator_77802_desc_p_ldo(28, 7, 1), | |
470 | regulator_77802_desc_p_ldo(29, 7, 1), | |
471 | regulator_77802_desc_n_ldo(30, 2, 1), | |
472 | regulator_77802_desc_p_ldo(32, 9, 1), | |
473 | regulator_77802_desc_p_ldo(33, 6, 1), | |
474 | regulator_77802_desc_p_ldo(34, 9, 1), | |
475 | regulator_77802_desc_n_ldo(35, 2, 1), | |
476 | }; | |
477 | ||
e6f2f805 JMC |
478 | static int max77802_pmic_probe(struct platform_device *pdev) |
479 | { | |
480 | struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); | |
e6f2f805 | 481 | struct max77802_regulator_prv *max77802; |
ff633bea | 482 | int i, val; |
e6f2f805 JMC |
483 | struct regulator_config config = { }; |
484 | ||
e6f2f805 JMC |
485 | max77802 = devm_kzalloc(&pdev->dev, |
486 | sizeof(struct max77802_regulator_prv), | |
487 | GFP_KERNEL); | |
488 | if (!max77802) | |
489 | return -ENOMEM; | |
490 | ||
e6f2f805 JMC |
491 | config.dev = iodev->dev; |
492 | config.regmap = iodev->regmap; | |
493 | config.driver_data = max77802; | |
494 | platform_set_drvdata(pdev, max77802); | |
495 | ||
496 | for (i = 0; i < MAX77802_REG_MAX; i++) { | |
497 | struct regulator_dev *rdev; | |
ff633bea | 498 | int id = regulators[i].id; |
e6f2f805 | 499 | int shift = max77802_get_opmode_shift(id); |
ff633bea | 500 | int ret; |
e6f2f805 JMC |
501 | |
502 | ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); | |
a26ed45c KK |
503 | if (ret < 0) { |
504 | dev_warn(&pdev->dev, | |
505 | "cannot read current mode for %d\n", i); | |
506 | val = MAX77802_OPMODE_NORMAL; | |
507 | } else { | |
508 | val = val >> shift & MAX77802_OPMODE_MASK; | |
509 | } | |
aea8dfb9 JMC |
510 | |
511 | /* | |
512 | * If the regulator is disabled and the system warm rebooted, | |
513 | * the hardware reports OFF as the regulator operating mode. | |
514 | * Default to operating mode NORMAL in that case. | |
515 | */ | |
0505be71 | 516 | if (val == MAX77802_STATUS_OFF) |
aea8dfb9 JMC |
517 | max77802->opmode[id] = MAX77802_OPMODE_NORMAL; |
518 | else | |
519 | max77802->opmode[id] = val; | |
e6f2f805 JMC |
520 | |
521 | rdev = devm_regulator_register(&pdev->dev, | |
522 | ®ulators[i], &config); | |
523 | if (IS_ERR(rdev)) { | |
ff633bea | 524 | ret = PTR_ERR(rdev); |
e6f2f805 | 525 | dev_err(&pdev->dev, |
ff633bea KK |
526 | "regulator init failed for %d: %d\n", i, ret); |
527 | return ret; | |
e6f2f805 JMC |
528 | } |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | static const struct platform_device_id max77802_pmic_id[] = { | |
535 | {"max77802-pmic", 0}, | |
536 | { }, | |
537 | }; | |
538 | MODULE_DEVICE_TABLE(platform, max77802_pmic_id); | |
539 | ||
540 | static struct platform_driver max77802_pmic_driver = { | |
541 | .driver = { | |
542 | .name = "max77802-pmic", | |
e6f2f805 JMC |
543 | }, |
544 | .probe = max77802_pmic_probe, | |
545 | .id_table = max77802_pmic_id, | |
546 | }; | |
547 | ||
548 | module_platform_driver(max77802_pmic_driver); | |
549 | ||
550 | MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); | |
551 | MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); | |
552 | MODULE_LICENSE("GPL"); |