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0935ff5f RG |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Copyright 2020 NXP. | |
4 | * NXP PCA9450 pmic driver | |
5 | */ | |
6 | ||
7 | #include <linux/err.h> | |
8c67a11b | 8 | #include <linux/gpio/consumer.h> |
0935ff5f RG |
9 | #include <linux/i2c.h> |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/of.h> | |
14 | #include <linux/of_device.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/regulator/driver.h> | |
17 | #include <linux/regulator/machine.h> | |
18 | #include <linux/regulator/of_regulator.h> | |
19 | #include <linux/regulator/pca9450.h> | |
20 | ||
21 | struct pc9450_dvs_config { | |
22 | unsigned int run_reg; /* dvs0 */ | |
23 | unsigned int run_mask; | |
24 | unsigned int standby_reg; /* dvs1 */ | |
25 | unsigned int standby_mask; | |
26 | }; | |
27 | ||
28 | struct pca9450_regulator_desc { | |
29 | struct regulator_desc desc; | |
30 | const struct pc9450_dvs_config dvs; | |
31 | }; | |
32 | ||
33 | struct pca9450 { | |
34 | struct device *dev; | |
35 | struct regmap *regmap; | |
8c67a11b | 36 | struct gpio_desc *sd_vsel_gpio; |
0935ff5f RG |
37 | enum pca9450_chip_type type; |
38 | unsigned int rcnt; | |
39 | int irq; | |
40 | }; | |
41 | ||
42 | static const struct regmap_range pca9450_status_range = { | |
43 | .range_min = PCA9450_REG_INT1, | |
44 | .range_max = PCA9450_REG_PWRON_STAT, | |
45 | }; | |
46 | ||
47 | static const struct regmap_access_table pca9450_volatile_regs = { | |
48 | .yes_ranges = &pca9450_status_range, | |
49 | .n_yes_ranges = 1, | |
50 | }; | |
51 | ||
52 | static const struct regmap_config pca9450_regmap_config = { | |
53 | .reg_bits = 8, | |
54 | .val_bits = 8, | |
55 | .volatile_table = &pca9450_volatile_regs, | |
56 | .max_register = PCA9450_MAX_REGISTER - 1, | |
57 | .cache_type = REGCACHE_RBTREE, | |
58 | }; | |
59 | ||
60 | /* | |
61 | * BUCK1/2/3 | |
62 | * BUCK1RAM[1:0] BUCK1 DVS ramp rate setting | |
63 | * 00: 25mV/1usec | |
64 | * 01: 25mV/2usec | |
65 | * 10: 25mV/4usec | |
66 | * 11: 25mV/8usec | |
67 | */ | |
4c4fce17 AL |
68 | static const unsigned int pca9450_dvs_buck_ramp_table[] = { |
69 | 25000, 12500, 6250, 3125 | |
70 | }; | |
0935ff5f | 71 | |
72f2746c | 72 | static const struct regulator_ops pca9450_dvs_buck_regulator_ops = { |
0935ff5f RG |
73 | .enable = regulator_enable_regmap, |
74 | .disable = regulator_disable_regmap, | |
75 | .is_enabled = regulator_is_enabled_regmap, | |
76 | .list_voltage = regulator_list_voltage_linear_range, | |
77 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
78 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
79 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
4c4fce17 | 80 | .set_ramp_delay = regulator_set_ramp_delay_regmap, |
0935ff5f RG |
81 | }; |
82 | ||
72f2746c | 83 | static const struct regulator_ops pca9450_buck_regulator_ops = { |
0935ff5f RG |
84 | .enable = regulator_enable_regmap, |
85 | .disable = regulator_disable_regmap, | |
86 | .is_enabled = regulator_is_enabled_regmap, | |
87 | .list_voltage = regulator_list_voltage_linear_range, | |
88 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
89 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
90 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
91 | }; | |
92 | ||
72f2746c | 93 | static const struct regulator_ops pca9450_ldo_regulator_ops = { |
0935ff5f RG |
94 | .enable = regulator_enable_regmap, |
95 | .disable = regulator_disable_regmap, | |
96 | .is_enabled = regulator_is_enabled_regmap, | |
97 | .list_voltage = regulator_list_voltage_linear_range, | |
98 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
99 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
100 | }; | |
101 | ||
102 | /* | |
103 | * BUCK1/2/3 | |
104 | * 0.60 to 2.1875V (12.5mV step) | |
105 | */ | |
106 | static const struct linear_range pca9450_dvs_buck_volts[] = { | |
107 | REGULATOR_LINEAR_RANGE(600000, 0x00, 0x7F, 12500), | |
108 | }; | |
109 | ||
110 | /* | |
111 | * BUCK4/5/6 | |
112 | * 0.6V to 3.4V (25mV step) | |
113 | */ | |
114 | static const struct linear_range pca9450_buck_volts[] = { | |
115 | REGULATOR_LINEAR_RANGE(600000, 0x00, 0x70, 25000), | |
116 | REGULATOR_LINEAR_RANGE(3400000, 0x71, 0x7F, 0), | |
117 | }; | |
118 | ||
119 | /* | |
120 | * LDO1 | |
121 | * 1.6 to 3.3V () | |
122 | */ | |
123 | static const struct linear_range pca9450_ldo1_volts[] = { | |
124 | REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), | |
125 | REGULATOR_LINEAR_RANGE(3000000, 0x04, 0x07, 100000), | |
126 | }; | |
127 | ||
128 | /* | |
129 | * LDO2 | |
130 | * 0.8 to 1.15V (50mV step) | |
131 | */ | |
132 | static const struct linear_range pca9450_ldo2_volts[] = { | |
133 | REGULATOR_LINEAR_RANGE(800000, 0x00, 0x07, 50000), | |
134 | }; | |
135 | ||
136 | /* | |
137 | * LDO3/4 | |
138 | * 0.8 to 3.3V (100mV step) | |
139 | */ | |
140 | static const struct linear_range pca9450_ldo34_volts[] = { | |
141 | REGULATOR_LINEAR_RANGE(800000, 0x00, 0x19, 100000), | |
142 | REGULATOR_LINEAR_RANGE(3300000, 0x1A, 0x1F, 0), | |
143 | }; | |
144 | ||
145 | /* | |
146 | * LDO5 | |
147 | * 1.8 to 3.3V (100mV step) | |
148 | */ | |
149 | static const struct linear_range pca9450_ldo5_volts[] = { | |
150 | REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), | |
151 | }; | |
152 | ||
153 | static int buck_set_dvs(const struct regulator_desc *desc, | |
154 | struct device_node *np, struct regmap *regmap, | |
155 | char *prop, unsigned int reg, unsigned int mask) | |
156 | { | |
157 | int ret, i; | |
158 | uint32_t uv; | |
159 | ||
160 | ret = of_property_read_u32(np, prop, &uv); | |
161 | if (ret == -EINVAL) | |
162 | return 0; | |
163 | else if (ret) | |
164 | return ret; | |
165 | ||
166 | for (i = 0; i < desc->n_voltages; i++) { | |
167 | ret = regulator_desc_list_voltage_linear_range(desc, i); | |
168 | if (ret < 0) | |
169 | continue; | |
170 | if (ret == uv) { | |
171 | i <<= ffs(desc->vsel_mask) - 1; | |
172 | ret = regmap_update_bits(regmap, reg, mask, i); | |
173 | break; | |
174 | } | |
175 | } | |
176 | ||
20078e3b RA |
177 | if (ret == 0) { |
178 | struct pca9450_regulator_desc *regulator = container_of(desc, | |
179 | struct pca9450_regulator_desc, desc); | |
180 | ||
181 | /* Enable DVS control through PMIC_STBY_REQ for this BUCK */ | |
182 | ret = regmap_update_bits(regmap, regulator->desc.enable_reg, | |
183 | BUCK1_DVS_CTRL, BUCK1_DVS_CTRL); | |
184 | } | |
0935ff5f RG |
185 | return ret; |
186 | } | |
187 | ||
188 | static int pca9450_set_dvs_levels(struct device_node *np, | |
189 | const struct regulator_desc *desc, | |
190 | struct regulator_config *cfg) | |
191 | { | |
192 | struct pca9450_regulator_desc *data = container_of(desc, | |
193 | struct pca9450_regulator_desc, desc); | |
194 | const struct pc9450_dvs_config *dvs = &data->dvs; | |
195 | unsigned int reg, mask; | |
196 | char *prop; | |
197 | int i, ret = 0; | |
198 | ||
199 | for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) { | |
200 | switch (i) { | |
201 | case PCA9450_DVS_LEVEL_RUN: | |
202 | prop = "nxp,dvs-run-voltage"; | |
203 | reg = dvs->run_reg; | |
204 | mask = dvs->run_mask; | |
205 | break; | |
206 | case PCA9450_DVS_LEVEL_STANDBY: | |
207 | prop = "nxp,dvs-standby-voltage"; | |
208 | reg = dvs->standby_reg; | |
209 | mask = dvs->standby_mask; | |
210 | break; | |
211 | default: | |
212 | return -EINVAL; | |
213 | } | |
214 | ||
215 | ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask); | |
216 | if (ret) | |
217 | break; | |
218 | } | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
223 | static const struct pca9450_regulator_desc pca9450a_regulators[] = { | |
224 | { | |
225 | .desc = { | |
226 | .name = "buck1", | |
227 | .of_match = of_match_ptr("BUCK1"), | |
228 | .regulators_node = of_match_ptr("regulators"), | |
229 | .id = PCA9450_BUCK1, | |
230 | .ops = &pca9450_dvs_buck_regulator_ops, | |
231 | .type = REGULATOR_VOLTAGE, | |
232 | .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, | |
233 | .linear_ranges = pca9450_dvs_buck_volts, | |
234 | .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), | |
235 | .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, | |
236 | .vsel_mask = BUCK1OUT_DVS0_MASK, | |
237 | .enable_reg = PCA9450_REG_BUCK1CTRL, | |
238 | .enable_mask = BUCK1_ENMODE_MASK, | |
4c4fce17 AL |
239 | .ramp_reg = PCA9450_REG_BUCK1CTRL, |
240 | .ramp_mask = BUCK1_RAMP_MASK, | |
241 | .ramp_delay_table = pca9450_dvs_buck_ramp_table, | |
242 | .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), | |
0935ff5f RG |
243 | .owner = THIS_MODULE, |
244 | .of_parse_cb = pca9450_set_dvs_levels, | |
245 | }, | |
246 | .dvs = { | |
247 | .run_reg = PCA9450_REG_BUCK1OUT_DVS0, | |
248 | .run_mask = BUCK1OUT_DVS0_MASK, | |
249 | .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, | |
250 | .standby_mask = BUCK1OUT_DVS1_MASK, | |
251 | }, | |
252 | }, | |
253 | { | |
254 | .desc = { | |
255 | .name = "buck2", | |
256 | .of_match = of_match_ptr("BUCK2"), | |
257 | .regulators_node = of_match_ptr("regulators"), | |
258 | .id = PCA9450_BUCK2, | |
259 | .ops = &pca9450_dvs_buck_regulator_ops, | |
260 | .type = REGULATOR_VOLTAGE, | |
261 | .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, | |
262 | .linear_ranges = pca9450_dvs_buck_volts, | |
263 | .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), | |
264 | .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, | |
265 | .vsel_mask = BUCK2OUT_DVS0_MASK, | |
266 | .enable_reg = PCA9450_REG_BUCK2CTRL, | |
d67dada3 | 267 | .enable_mask = BUCK2_ENMODE_MASK, |
4c4fce17 AL |
268 | .ramp_reg = PCA9450_REG_BUCK2CTRL, |
269 | .ramp_mask = BUCK2_RAMP_MASK, | |
270 | .ramp_delay_table = pca9450_dvs_buck_ramp_table, | |
271 | .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), | |
0935ff5f RG |
272 | .owner = THIS_MODULE, |
273 | .of_parse_cb = pca9450_set_dvs_levels, | |
274 | }, | |
275 | .dvs = { | |
276 | .run_reg = PCA9450_REG_BUCK2OUT_DVS0, | |
277 | .run_mask = BUCK2OUT_DVS0_MASK, | |
278 | .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, | |
279 | .standby_mask = BUCK2OUT_DVS1_MASK, | |
280 | }, | |
281 | }, | |
282 | { | |
283 | .desc = { | |
284 | .name = "buck3", | |
285 | .of_match = of_match_ptr("BUCK3"), | |
286 | .regulators_node = of_match_ptr("regulators"), | |
287 | .id = PCA9450_BUCK3, | |
288 | .ops = &pca9450_dvs_buck_regulator_ops, | |
289 | .type = REGULATOR_VOLTAGE, | |
290 | .n_voltages = PCA9450_BUCK3_VOLTAGE_NUM, | |
291 | .linear_ranges = pca9450_dvs_buck_volts, | |
292 | .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), | |
293 | .vsel_reg = PCA9450_REG_BUCK3OUT_DVS0, | |
294 | .vsel_mask = BUCK3OUT_DVS0_MASK, | |
295 | .enable_reg = PCA9450_REG_BUCK3CTRL, | |
296 | .enable_mask = BUCK3_ENMODE_MASK, | |
4c4fce17 AL |
297 | .ramp_reg = PCA9450_REG_BUCK3CTRL, |
298 | .ramp_mask = BUCK3_RAMP_MASK, | |
299 | .ramp_delay_table = pca9450_dvs_buck_ramp_table, | |
300 | .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), | |
0935ff5f RG |
301 | .owner = THIS_MODULE, |
302 | .of_parse_cb = pca9450_set_dvs_levels, | |
303 | }, | |
304 | .dvs = { | |
305 | .run_reg = PCA9450_REG_BUCK3OUT_DVS0, | |
306 | .run_mask = BUCK3OUT_DVS0_MASK, | |
307 | .standby_reg = PCA9450_REG_BUCK3OUT_DVS1, | |
308 | .standby_mask = BUCK3OUT_DVS1_MASK, | |
309 | }, | |
310 | }, | |
311 | { | |
312 | .desc = { | |
313 | .name = "buck4", | |
314 | .of_match = of_match_ptr("BUCK4"), | |
315 | .regulators_node = of_match_ptr("regulators"), | |
316 | .id = PCA9450_BUCK4, | |
317 | .ops = &pca9450_buck_regulator_ops, | |
318 | .type = REGULATOR_VOLTAGE, | |
319 | .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, | |
320 | .linear_ranges = pca9450_buck_volts, | |
321 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
322 | .vsel_reg = PCA9450_REG_BUCK4OUT, | |
323 | .vsel_mask = BUCK4OUT_MASK, | |
324 | .enable_reg = PCA9450_REG_BUCK4CTRL, | |
325 | .enable_mask = BUCK4_ENMODE_MASK, | |
326 | .owner = THIS_MODULE, | |
327 | }, | |
328 | }, | |
329 | { | |
330 | .desc = { | |
331 | .name = "buck5", | |
332 | .of_match = of_match_ptr("BUCK5"), | |
333 | .regulators_node = of_match_ptr("regulators"), | |
334 | .id = PCA9450_BUCK5, | |
335 | .ops = &pca9450_buck_regulator_ops, | |
336 | .type = REGULATOR_VOLTAGE, | |
337 | .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, | |
338 | .linear_ranges = pca9450_buck_volts, | |
339 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
340 | .vsel_reg = PCA9450_REG_BUCK5OUT, | |
341 | .vsel_mask = BUCK5OUT_MASK, | |
342 | .enable_reg = PCA9450_REG_BUCK5CTRL, | |
343 | .enable_mask = BUCK5_ENMODE_MASK, | |
344 | .owner = THIS_MODULE, | |
345 | }, | |
346 | }, | |
347 | { | |
348 | .desc = { | |
349 | .name = "buck6", | |
350 | .of_match = of_match_ptr("BUCK6"), | |
351 | .regulators_node = of_match_ptr("regulators"), | |
352 | .id = PCA9450_BUCK6, | |
353 | .ops = &pca9450_buck_regulator_ops, | |
354 | .type = REGULATOR_VOLTAGE, | |
355 | .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, | |
356 | .linear_ranges = pca9450_buck_volts, | |
357 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
358 | .vsel_reg = PCA9450_REG_BUCK6OUT, | |
359 | .vsel_mask = BUCK6OUT_MASK, | |
360 | .enable_reg = PCA9450_REG_BUCK6CTRL, | |
361 | .enable_mask = BUCK6_ENMODE_MASK, | |
362 | .owner = THIS_MODULE, | |
363 | }, | |
364 | }, | |
365 | { | |
366 | .desc = { | |
367 | .name = "ldo1", | |
368 | .of_match = of_match_ptr("LDO1"), | |
369 | .regulators_node = of_match_ptr("regulators"), | |
370 | .id = PCA9450_LDO1, | |
371 | .ops = &pca9450_ldo_regulator_ops, | |
372 | .type = REGULATOR_VOLTAGE, | |
373 | .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, | |
374 | .linear_ranges = pca9450_ldo1_volts, | |
375 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), | |
376 | .vsel_reg = PCA9450_REG_LDO1CTRL, | |
377 | .vsel_mask = LDO1OUT_MASK, | |
378 | .enable_reg = PCA9450_REG_LDO1CTRL, | |
379 | .enable_mask = LDO1_EN_MASK, | |
380 | .owner = THIS_MODULE, | |
381 | }, | |
382 | }, | |
383 | { | |
384 | .desc = { | |
385 | .name = "ldo2", | |
386 | .of_match = of_match_ptr("LDO2"), | |
387 | .regulators_node = of_match_ptr("regulators"), | |
388 | .id = PCA9450_LDO2, | |
389 | .ops = &pca9450_ldo_regulator_ops, | |
390 | .type = REGULATOR_VOLTAGE, | |
391 | .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, | |
392 | .linear_ranges = pca9450_ldo2_volts, | |
393 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), | |
394 | .vsel_reg = PCA9450_REG_LDO2CTRL, | |
395 | .vsel_mask = LDO2OUT_MASK, | |
396 | .enable_reg = PCA9450_REG_LDO2CTRL, | |
397 | .enable_mask = LDO2_EN_MASK, | |
398 | .owner = THIS_MODULE, | |
399 | }, | |
400 | }, | |
401 | { | |
402 | .desc = { | |
403 | .name = "ldo3", | |
404 | .of_match = of_match_ptr("LDO3"), | |
405 | .regulators_node = of_match_ptr("regulators"), | |
406 | .id = PCA9450_LDO3, | |
407 | .ops = &pca9450_ldo_regulator_ops, | |
408 | .type = REGULATOR_VOLTAGE, | |
409 | .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, | |
410 | .linear_ranges = pca9450_ldo34_volts, | |
411 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), | |
412 | .vsel_reg = PCA9450_REG_LDO3CTRL, | |
413 | .vsel_mask = LDO3OUT_MASK, | |
414 | .enable_reg = PCA9450_REG_LDO3CTRL, | |
415 | .enable_mask = LDO3_EN_MASK, | |
416 | .owner = THIS_MODULE, | |
417 | }, | |
418 | }, | |
419 | { | |
420 | .desc = { | |
421 | .name = "ldo4", | |
422 | .of_match = of_match_ptr("LDO4"), | |
423 | .regulators_node = of_match_ptr("regulators"), | |
424 | .id = PCA9450_LDO4, | |
425 | .ops = &pca9450_ldo_regulator_ops, | |
426 | .type = REGULATOR_VOLTAGE, | |
427 | .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, | |
428 | .linear_ranges = pca9450_ldo34_volts, | |
429 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), | |
430 | .vsel_reg = PCA9450_REG_LDO4CTRL, | |
431 | .vsel_mask = LDO4OUT_MASK, | |
432 | .enable_reg = PCA9450_REG_LDO4CTRL, | |
433 | .enable_mask = LDO4_EN_MASK, | |
434 | .owner = THIS_MODULE, | |
435 | }, | |
436 | }, | |
437 | { | |
438 | .desc = { | |
439 | .name = "ldo5", | |
440 | .of_match = of_match_ptr("LDO5"), | |
441 | .regulators_node = of_match_ptr("regulators"), | |
442 | .id = PCA9450_LDO5, | |
443 | .ops = &pca9450_ldo_regulator_ops, | |
444 | .type = REGULATOR_VOLTAGE, | |
445 | .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, | |
446 | .linear_ranges = pca9450_ldo5_volts, | |
447 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), | |
448 | .vsel_reg = PCA9450_REG_LDO5CTRL_H, | |
449 | .vsel_mask = LDO5HOUT_MASK, | |
450 | .enable_reg = PCA9450_REG_LDO5CTRL_H, | |
451 | .enable_mask = LDO5H_EN_MASK, | |
452 | .owner = THIS_MODULE, | |
453 | }, | |
454 | }, | |
455 | }; | |
456 | ||
457 | /* | |
458 | * Buck3 removed on PCA9450B and connected with Buck1 internal for dual phase | |
459 | * on PCA9450C as no Buck3. | |
460 | */ | |
461 | static const struct pca9450_regulator_desc pca9450bc_regulators[] = { | |
462 | { | |
463 | .desc = { | |
464 | .name = "buck1", | |
465 | .of_match = of_match_ptr("BUCK1"), | |
466 | .regulators_node = of_match_ptr("regulators"), | |
467 | .id = PCA9450_BUCK1, | |
468 | .ops = &pca9450_dvs_buck_regulator_ops, | |
469 | .type = REGULATOR_VOLTAGE, | |
470 | .n_voltages = PCA9450_BUCK1_VOLTAGE_NUM, | |
471 | .linear_ranges = pca9450_dvs_buck_volts, | |
472 | .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), | |
473 | .vsel_reg = PCA9450_REG_BUCK1OUT_DVS0, | |
474 | .vsel_mask = BUCK1OUT_DVS0_MASK, | |
475 | .enable_reg = PCA9450_REG_BUCK1CTRL, | |
476 | .enable_mask = BUCK1_ENMODE_MASK, | |
4c4fce17 AL |
477 | .ramp_reg = PCA9450_REG_BUCK1CTRL, |
478 | .ramp_mask = BUCK1_RAMP_MASK, | |
479 | .ramp_delay_table = pca9450_dvs_buck_ramp_table, | |
480 | .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), | |
0935ff5f RG |
481 | .owner = THIS_MODULE, |
482 | .of_parse_cb = pca9450_set_dvs_levels, | |
483 | }, | |
484 | .dvs = { | |
485 | .run_reg = PCA9450_REG_BUCK1OUT_DVS0, | |
486 | .run_mask = BUCK1OUT_DVS0_MASK, | |
487 | .standby_reg = PCA9450_REG_BUCK1OUT_DVS1, | |
488 | .standby_mask = BUCK1OUT_DVS1_MASK, | |
489 | }, | |
490 | }, | |
491 | { | |
492 | .desc = { | |
493 | .name = "buck2", | |
494 | .of_match = of_match_ptr("BUCK2"), | |
495 | .regulators_node = of_match_ptr("regulators"), | |
496 | .id = PCA9450_BUCK2, | |
497 | .ops = &pca9450_dvs_buck_regulator_ops, | |
498 | .type = REGULATOR_VOLTAGE, | |
499 | .n_voltages = PCA9450_BUCK2_VOLTAGE_NUM, | |
500 | .linear_ranges = pca9450_dvs_buck_volts, | |
501 | .n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts), | |
502 | .vsel_reg = PCA9450_REG_BUCK2OUT_DVS0, | |
503 | .vsel_mask = BUCK2OUT_DVS0_MASK, | |
504 | .enable_reg = PCA9450_REG_BUCK2CTRL, | |
d67dada3 | 505 | .enable_mask = BUCK2_ENMODE_MASK, |
4c4fce17 AL |
506 | .ramp_reg = PCA9450_REG_BUCK2CTRL, |
507 | .ramp_mask = BUCK2_RAMP_MASK, | |
508 | .ramp_delay_table = pca9450_dvs_buck_ramp_table, | |
509 | .n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table), | |
0935ff5f RG |
510 | .owner = THIS_MODULE, |
511 | .of_parse_cb = pca9450_set_dvs_levels, | |
512 | }, | |
513 | .dvs = { | |
514 | .run_reg = PCA9450_REG_BUCK2OUT_DVS0, | |
515 | .run_mask = BUCK2OUT_DVS0_MASK, | |
516 | .standby_reg = PCA9450_REG_BUCK2OUT_DVS1, | |
517 | .standby_mask = BUCK2OUT_DVS1_MASK, | |
518 | }, | |
519 | }, | |
520 | { | |
521 | .desc = { | |
522 | .name = "buck4", | |
523 | .of_match = of_match_ptr("BUCK4"), | |
524 | .regulators_node = of_match_ptr("regulators"), | |
525 | .id = PCA9450_BUCK4, | |
526 | .ops = &pca9450_buck_regulator_ops, | |
527 | .type = REGULATOR_VOLTAGE, | |
528 | .n_voltages = PCA9450_BUCK4_VOLTAGE_NUM, | |
529 | .linear_ranges = pca9450_buck_volts, | |
530 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
531 | .vsel_reg = PCA9450_REG_BUCK4OUT, | |
532 | .vsel_mask = BUCK4OUT_MASK, | |
533 | .enable_reg = PCA9450_REG_BUCK4CTRL, | |
534 | .enable_mask = BUCK4_ENMODE_MASK, | |
535 | .owner = THIS_MODULE, | |
536 | }, | |
537 | }, | |
538 | { | |
539 | .desc = { | |
540 | .name = "buck5", | |
541 | .of_match = of_match_ptr("BUCK5"), | |
542 | .regulators_node = of_match_ptr("regulators"), | |
543 | .id = PCA9450_BUCK5, | |
544 | .ops = &pca9450_buck_regulator_ops, | |
545 | .type = REGULATOR_VOLTAGE, | |
546 | .n_voltages = PCA9450_BUCK5_VOLTAGE_NUM, | |
547 | .linear_ranges = pca9450_buck_volts, | |
548 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
549 | .vsel_reg = PCA9450_REG_BUCK5OUT, | |
550 | .vsel_mask = BUCK5OUT_MASK, | |
551 | .enable_reg = PCA9450_REG_BUCK5CTRL, | |
552 | .enable_mask = BUCK5_ENMODE_MASK, | |
553 | .owner = THIS_MODULE, | |
554 | }, | |
555 | }, | |
556 | { | |
557 | .desc = { | |
558 | .name = "buck6", | |
559 | .of_match = of_match_ptr("BUCK6"), | |
560 | .regulators_node = of_match_ptr("regulators"), | |
561 | .id = PCA9450_BUCK6, | |
562 | .ops = &pca9450_buck_regulator_ops, | |
563 | .type = REGULATOR_VOLTAGE, | |
564 | .n_voltages = PCA9450_BUCK6_VOLTAGE_NUM, | |
565 | .linear_ranges = pca9450_buck_volts, | |
566 | .n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts), | |
567 | .vsel_reg = PCA9450_REG_BUCK6OUT, | |
568 | .vsel_mask = BUCK6OUT_MASK, | |
569 | .enable_reg = PCA9450_REG_BUCK6CTRL, | |
570 | .enable_mask = BUCK6_ENMODE_MASK, | |
571 | .owner = THIS_MODULE, | |
572 | }, | |
573 | }, | |
574 | { | |
575 | .desc = { | |
576 | .name = "ldo1", | |
577 | .of_match = of_match_ptr("LDO1"), | |
578 | .regulators_node = of_match_ptr("regulators"), | |
579 | .id = PCA9450_LDO1, | |
580 | .ops = &pca9450_ldo_regulator_ops, | |
581 | .type = REGULATOR_VOLTAGE, | |
582 | .n_voltages = PCA9450_LDO1_VOLTAGE_NUM, | |
583 | .linear_ranges = pca9450_ldo1_volts, | |
584 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts), | |
585 | .vsel_reg = PCA9450_REG_LDO1CTRL, | |
586 | .vsel_mask = LDO1OUT_MASK, | |
587 | .enable_reg = PCA9450_REG_LDO1CTRL, | |
588 | .enable_mask = LDO1_EN_MASK, | |
589 | .owner = THIS_MODULE, | |
590 | }, | |
591 | }, | |
592 | { | |
593 | .desc = { | |
594 | .name = "ldo2", | |
595 | .of_match = of_match_ptr("LDO2"), | |
596 | .regulators_node = of_match_ptr("regulators"), | |
597 | .id = PCA9450_LDO2, | |
598 | .ops = &pca9450_ldo_regulator_ops, | |
599 | .type = REGULATOR_VOLTAGE, | |
600 | .n_voltages = PCA9450_LDO2_VOLTAGE_NUM, | |
601 | .linear_ranges = pca9450_ldo2_volts, | |
602 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo2_volts), | |
603 | .vsel_reg = PCA9450_REG_LDO2CTRL, | |
604 | .vsel_mask = LDO2OUT_MASK, | |
605 | .enable_reg = PCA9450_REG_LDO2CTRL, | |
606 | .enable_mask = LDO2_EN_MASK, | |
607 | .owner = THIS_MODULE, | |
608 | }, | |
609 | }, | |
610 | { | |
611 | .desc = { | |
612 | .name = "ldo3", | |
613 | .of_match = of_match_ptr("LDO3"), | |
614 | .regulators_node = of_match_ptr("regulators"), | |
615 | .id = PCA9450_LDO3, | |
616 | .ops = &pca9450_ldo_regulator_ops, | |
617 | .type = REGULATOR_VOLTAGE, | |
618 | .n_voltages = PCA9450_LDO3_VOLTAGE_NUM, | |
619 | .linear_ranges = pca9450_ldo34_volts, | |
620 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), | |
621 | .vsel_reg = PCA9450_REG_LDO3CTRL, | |
622 | .vsel_mask = LDO3OUT_MASK, | |
623 | .enable_reg = PCA9450_REG_LDO3CTRL, | |
624 | .enable_mask = LDO3_EN_MASK, | |
625 | .owner = THIS_MODULE, | |
626 | }, | |
627 | }, | |
628 | { | |
629 | .desc = { | |
630 | .name = "ldo4", | |
631 | .of_match = of_match_ptr("LDO4"), | |
632 | .regulators_node = of_match_ptr("regulators"), | |
633 | .id = PCA9450_LDO4, | |
634 | .ops = &pca9450_ldo_regulator_ops, | |
635 | .type = REGULATOR_VOLTAGE, | |
636 | .n_voltages = PCA9450_LDO4_VOLTAGE_NUM, | |
637 | .linear_ranges = pca9450_ldo34_volts, | |
638 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts), | |
639 | .vsel_reg = PCA9450_REG_LDO4CTRL, | |
640 | .vsel_mask = LDO4OUT_MASK, | |
641 | .enable_reg = PCA9450_REG_LDO4CTRL, | |
642 | .enable_mask = LDO4_EN_MASK, | |
643 | .owner = THIS_MODULE, | |
644 | }, | |
645 | }, | |
646 | { | |
647 | .desc = { | |
648 | .name = "ldo5", | |
649 | .of_match = of_match_ptr("LDO5"), | |
650 | .regulators_node = of_match_ptr("regulators"), | |
651 | .id = PCA9450_LDO5, | |
652 | .ops = &pca9450_ldo_regulator_ops, | |
653 | .type = REGULATOR_VOLTAGE, | |
654 | .n_voltages = PCA9450_LDO5_VOLTAGE_NUM, | |
655 | .linear_ranges = pca9450_ldo5_volts, | |
656 | .n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts), | |
657 | .vsel_reg = PCA9450_REG_LDO5CTRL_H, | |
658 | .vsel_mask = LDO5HOUT_MASK, | |
659 | .enable_reg = PCA9450_REG_LDO5CTRL_H, | |
660 | .enable_mask = LDO5H_EN_MASK, | |
661 | .owner = THIS_MODULE, | |
662 | }, | |
663 | }, | |
664 | }; | |
665 | ||
666 | static irqreturn_t pca9450_irq_handler(int irq, void *data) | |
667 | { | |
668 | struct pca9450 *pca9450 = data; | |
669 | struct regmap *regmap = pca9450->regmap; | |
670 | unsigned int status; | |
671 | int ret; | |
672 | ||
673 | ret = regmap_read(regmap, PCA9450_REG_INT1, &status); | |
674 | if (ret < 0) { | |
675 | dev_err(pca9450->dev, | |
676 | "Failed to read INT1(%d)\n", ret); | |
677 | return IRQ_NONE; | |
678 | } | |
679 | ||
680 | if (status & IRQ_PWRON) | |
681 | dev_warn(pca9450->dev, "PWRON interrupt.\n"); | |
682 | ||
683 | if (status & IRQ_WDOGB) | |
684 | dev_warn(pca9450->dev, "WDOGB interrupt.\n"); | |
685 | ||
686 | if (status & IRQ_VR_FLT1) | |
687 | dev_warn(pca9450->dev, "VRFLT1 interrupt.\n"); | |
688 | ||
689 | if (status & IRQ_VR_FLT2) | |
690 | dev_warn(pca9450->dev, "VRFLT2 interrupt.\n"); | |
691 | ||
692 | if (status & IRQ_LOWVSYS) | |
693 | dev_warn(pca9450->dev, "LOWVSYS interrupt.\n"); | |
694 | ||
695 | if (status & IRQ_THERM_105) | |
696 | dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n"); | |
697 | ||
698 | if (status & IRQ_THERM_125) | |
699 | dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n"); | |
700 | ||
701 | return IRQ_HANDLED; | |
702 | } | |
703 | ||
ed56fa6e | 704 | static int pca9450_i2c_probe(struct i2c_client *i2c) |
0935ff5f RG |
705 | { |
706 | enum pca9450_chip_type type = (unsigned int)(uintptr_t) | |
707 | of_device_get_match_data(&i2c->dev); | |
708 | const struct pca9450_regulator_desc *regulator_desc; | |
709 | struct regulator_config config = { }; | |
710 | struct pca9450 *pca9450; | |
711 | unsigned int device_id, i; | |
2364a64d | 712 | unsigned int reset_ctrl; |
0935ff5f RG |
713 | int ret; |
714 | ||
715 | if (!i2c->irq) { | |
716 | dev_err(&i2c->dev, "No IRQ configured?\n"); | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL); | |
721 | if (!pca9450) | |
722 | return -ENOMEM; | |
723 | ||
724 | switch (type) { | |
725 | case PCA9450_TYPE_PCA9450A: | |
726 | regulator_desc = pca9450a_regulators; | |
727 | pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators); | |
728 | break; | |
729 | case PCA9450_TYPE_PCA9450BC: | |
730 | regulator_desc = pca9450bc_regulators; | |
731 | pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators); | |
732 | break; | |
733 | default: | |
734 | dev_err(&i2c->dev, "Unknown device type"); | |
735 | return -EINVAL; | |
736 | } | |
737 | ||
738 | pca9450->irq = i2c->irq; | |
739 | pca9450->type = type; | |
740 | pca9450->dev = &i2c->dev; | |
741 | ||
742 | dev_set_drvdata(&i2c->dev, pca9450); | |
743 | ||
744 | pca9450->regmap = devm_regmap_init_i2c(i2c, | |
745 | &pca9450_regmap_config); | |
746 | if (IS_ERR(pca9450->regmap)) { | |
747 | dev_err(&i2c->dev, "regmap initialization failed\n"); | |
748 | return PTR_ERR(pca9450->regmap); | |
749 | } | |
750 | ||
751 | ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id); | |
752 | if (ret) { | |
753 | dev_err(&i2c->dev, "Read device id error\n"); | |
754 | return ret; | |
755 | } | |
756 | ||
757 | /* Check your board and dts for match the right pmic */ | |
758 | if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) || | |
759 | ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) { | |
760 | dev_err(&i2c->dev, "Device id(%x) mismatched\n", | |
761 | device_id >> 4); | |
762 | return -EINVAL; | |
763 | } | |
764 | ||
765 | for (i = 0; i < pca9450->rcnt; i++) { | |
766 | const struct regulator_desc *desc; | |
767 | struct regulator_dev *rdev; | |
768 | const struct pca9450_regulator_desc *r; | |
769 | ||
770 | r = ®ulator_desc[i]; | |
771 | desc = &r->desc; | |
772 | ||
773 | config.regmap = pca9450->regmap; | |
774 | config.dev = pca9450->dev; | |
775 | ||
776 | rdev = devm_regulator_register(pca9450->dev, desc, &config); | |
777 | if (IS_ERR(rdev)) { | |
778 | ret = PTR_ERR(rdev); | |
779 | dev_err(pca9450->dev, | |
780 | "Failed to register regulator(%s): %d\n", | |
781 | desc->name, ret); | |
782 | return ret; | |
783 | } | |
784 | } | |
785 | ||
786 | ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL, | |
787 | pca9450_irq_handler, | |
788 | (IRQF_TRIGGER_FALLING | IRQF_ONESHOT), | |
789 | "pca9450-irq", pca9450); | |
790 | if (ret != 0) { | |
791 | dev_err(pca9450->dev, "Failed to request IRQ: %d\n", | |
792 | pca9450->irq); | |
793 | return ret; | |
794 | } | |
795 | /* Unmask all interrupt except PWRON/WDOG/RSVD */ | |
796 | ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK, | |
797 | IRQ_VR_FLT1 | IRQ_VR_FLT2 | IRQ_LOWVSYS | | |
798 | IRQ_THERM_105 | IRQ_THERM_125, | |
799 | IRQ_PWRON | IRQ_WDOGB | IRQ_RSVD); | |
800 | if (ret) { | |
801 | dev_err(&i2c->dev, "Unmask irq error\n"); | |
802 | return ret; | |
803 | } | |
804 | ||
98b94b6e FS |
805 | /* Clear PRESET_EN bit in BUCK123_DVS to use DVS registers */ |
806 | ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS, | |
807 | BUCK123_PRESET_EN); | |
808 | if (ret) { | |
809 | dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret); | |
810 | return ret; | |
811 | } | |
812 | ||
2364a64d RA |
813 | if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset")) |
814 | reset_ctrl = WDOG_B_CFG_WARM; | |
815 | else | |
816 | reset_ctrl = WDOG_B_CFG_COLD_LDO12; | |
817 | ||
f7684f5a FS |
818 | /* Set reset behavior on assertion of WDOG_B signal */ |
819 | ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL, | |
2364a64d | 820 | WDOG_B_CFG_MASK, reset_ctrl); |
f7684f5a FS |
821 | if (ret) { |
822 | dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n"); | |
823 | return ret; | |
824 | } | |
825 | ||
62139f52 PDO |
826 | if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) { |
827 | /* Enable I2C Level Translator */ | |
828 | ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2, | |
829 | I2C_LT_MASK, I2C_LT_ON_STANDBY_RUN); | |
830 | if (ret) { | |
831 | dev_err(&i2c->dev, | |
832 | "Failed to enable I2C level translator\n"); | |
833 | return ret; | |
834 | } | |
835 | } | |
836 | ||
8c67a11b FS |
837 | /* |
838 | * The driver uses the LDO5CTRL_H register to control the LDO5 regulator. | |
839 | * This is only valid if the SD_VSEL input of the PMIC is high. Let's | |
840 | * check if the pin is available as GPIO and set it to high. | |
841 | */ | |
842 | pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH); | |
843 | ||
844 | if (IS_ERR(pca9450->sd_vsel_gpio)) { | |
845 | dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n"); | |
5fe5f17d | 846 | return PTR_ERR(pca9450->sd_vsel_gpio); |
8c67a11b FS |
847 | } |
848 | ||
0935ff5f RG |
849 | dev_info(&i2c->dev, "%s probed.\n", |
850 | type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc"); | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | static const struct of_device_id pca9450_of_match[] = { | |
856 | { | |
857 | .compatible = "nxp,pca9450a", | |
858 | .data = (void *)PCA9450_TYPE_PCA9450A, | |
859 | }, | |
860 | { | |
861 | .compatible = "nxp,pca9450b", | |
862 | .data = (void *)PCA9450_TYPE_PCA9450BC, | |
863 | }, | |
864 | { | |
865 | .compatible = "nxp,pca9450c", | |
866 | .data = (void *)PCA9450_TYPE_PCA9450BC, | |
867 | }, | |
868 | { } | |
869 | }; | |
870 | MODULE_DEVICE_TABLE(of, pca9450_of_match); | |
871 | ||
872 | static struct i2c_driver pca9450_i2c_driver = { | |
873 | .driver = { | |
874 | .name = "nxp-pca9450", | |
67dc71c6 | 875 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
0935ff5f RG |
876 | .of_match_table = pca9450_of_match, |
877 | }, | |
964e1865 | 878 | .probe = pca9450_i2c_probe, |
0935ff5f RG |
879 | }; |
880 | ||
3bda44ff | 881 | module_i2c_driver(pca9450_i2c_driver); |
0935ff5f RG |
882 | |
883 | MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>"); | |
884 | MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver"); | |
885 | MODULE_LICENSE("GPL"); |