1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Regulator driver for TI TPS6586x |
4 | * |
5 | * Copyright (C) 2010 Compulab Ltd. |
6 | * Author: Mike Rapoport <mike@compulab.co.il> |
7 | * |
8 | * Based on da903x |
9 | * Copyright (C) 2006-2008 Marvell International Ltd. |
10 | * Copyright (C) 2008 Compulab Ltd. |
11 | */ |
12 | |
13 | #include <linux/kernel.h> |
14 | #include <linux/module.h> |
15 | #include <linux/init.h> |
16 | #include <linux/err.h> |
17 | #include <linux/of.h> |
18 | #include <linux/slab.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/tps6586x.h> |
24 | |
25 | /* supply control and voltage setting */ |
26 | #define TPS6586X_SUPPLYENA 0x10 |
27 | #define TPS6586X_SUPPLYENB 0x11 |
28 | #define TPS6586X_SUPPLYENC 0x12 |
29 | #define TPS6586X_SUPPLYEND 0x13 |
30 | #define TPS6586X_SUPPLYENE 0x14 |
31 | #define TPS6586X_VCC1 0x20 |
32 | #define TPS6586X_VCC2 0x21 |
33 | #define TPS6586X_SM1V1 0x23 |
34 | #define TPS6586X_SM1V2 0x24 |
35 | #define TPS6586X_SM1SL 0x25 |
36 | #define TPS6586X_SM0V1 0x26 |
37 | #define TPS6586X_SM0V2 0x27 |
38 | #define TPS6586X_SM0SL 0x28 |
39 | #define TPS6586X_LDO2AV1 0x29 |
40 | #define TPS6586X_LDO2AV2 0x2A |
41 | #define TPS6586X_LDO2BV1 0x2F |
42 | #define TPS6586X_LDO2BV2 0x30 |
43 | #define TPS6586X_LDO4V1 0x32 |
44 | #define TPS6586X_LDO4V2 0x33 |
45 | |
46 | /* converter settings */ |
47 | #define TPS6586X_SUPPLYV1 0x41 |
48 | #define TPS6586X_SUPPLYV2 0x42 |
49 | #define TPS6586X_SUPPLYV3 0x43 |
50 | #define TPS6586X_SUPPLYV4 0x44 |
51 | #define TPS6586X_SUPPLYV5 0x45 |
52 | #define TPS6586X_SUPPLYV6 0x46 |
53 | #define TPS6586X_SMODE1 0x47 |
54 | #define TPS6586X_SMODE2 0x48 |
55 | |
56 | struct tps6586x_regulator { |
57 | struct regulator_desc desc; |
58 | |
59 | int enable_bit[2]; |
60 | int enable_reg[2]; |
61 | }; |
62 | |
63 | static const struct regulator_ops tps6586x_rw_regulator_ops = { |
64 | .list_voltage = regulator_list_voltage_table, |
65 | .map_voltage = regulator_map_voltage_ascend, |
66 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
67 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
68 | |
69 | .is_enabled = regulator_is_enabled_regmap, |
70 | .enable = regulator_enable_regmap, |
71 | .disable = regulator_disable_regmap, |
72 | }; |
73 | |
74 | static const struct regulator_ops tps6586x_rw_linear_regulator_ops = { |
75 | .list_voltage = regulator_list_voltage_linear, |
76 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
77 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
78 | |
79 | .is_enabled = regulator_is_enabled_regmap, |
80 | .enable = regulator_enable_regmap, |
81 | .disable = regulator_disable_regmap, |
82 | }; |
83 | |
84 | static const struct regulator_ops tps6586x_ro_regulator_ops = { |
85 | .list_voltage = regulator_list_voltage_table, |
86 | .map_voltage = regulator_map_voltage_ascend, |
87 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
88 | |
89 | .is_enabled = regulator_is_enabled_regmap, |
90 | .enable = regulator_enable_regmap, |
91 | .disable = regulator_disable_regmap, |
92 | }; |
93 | |
94 | static const struct regulator_ops tps6586x_sys_regulator_ops = { |
95 | }; |
96 | |
97 | static const unsigned int tps6586x_ldo0_voltages[] = { |
98 | 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
99 | }; |
100 | |
101 | static const unsigned int tps6586x_ldo_voltages[] = { |
102 | 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000, |
103 | }; |
104 | |
105 | static const unsigned int tps658640_rtc_voltages[] = { |
106 | 2500000, 2850000, 3100000, 3300000, |
107 | }; |
108 | |
109 | #define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \ |
110 | ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
111 | .desc = { \ |
112 | .supply_name = _pin_name, \ |
113 | .name = "REG-" #_id, \ |
114 | .ops = &tps6586x_## _ops ## _regulator_ops, \ |
115 | .type = REGULATOR_VOLTAGE, \ |
116 | .id = TPS6586X_ID_##_id, \ |
117 | .n_voltages = ARRAY_SIZE(vdata##_voltages), \ |
118 | .volt_table = vdata##_voltages, \ |
119 | .owner = THIS_MODULE, \ |
120 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
121 | .enable_mask = 1 << (ebit0), \ |
122 | .vsel_reg = TPS6586X_##vreg, \ |
123 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
124 | .apply_reg = (goreg), \ |
125 | .apply_bit = (gobit), \ |
126 | }, \ |
127 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
128 | .enable_bit[0] = (ebit0), \ |
129 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
130 | .enable_bit[1] = (ebit1), |
131 | |
132 | #define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \ |
133 | uv_step, vreg, shift, nbits, ereg0, \ |
134 | ebit0, ereg1, ebit1, goreg, gobit) \ |
135 | .desc = { \ |
136 | .supply_name = _pin_name, \ |
137 | .name = "REG-" #_id, \ |
138 | .ops = &tps6586x_## _ops ## _regulator_ops, \ |
139 | .type = REGULATOR_VOLTAGE, \ |
140 | .id = TPS6586X_ID_##_id, \ |
141 | .n_voltages = n_volt, \ |
142 | .min_uV = min_uv, \ |
143 | .uV_step = uv_step, \ |
144 | .owner = THIS_MODULE, \ |
145 | .enable_reg = TPS6586X_SUPPLY##ereg0, \ |
146 | .enable_mask = 1 << (ebit0), \ |
147 | .vsel_reg = TPS6586X_##vreg, \ |
148 | .vsel_mask = ((1 << (nbits)) - 1) << (shift), \ |
149 | .apply_reg = (goreg), \ |
150 | .apply_bit = (gobit), \ |
151 | }, \ |
152 | .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \ |
153 | .enable_bit[0] = (ebit0), \ |
154 | .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \ |
155 | .enable_bit[1] = (ebit1), |
156 | |
157 | #define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
158 | ereg0, ebit0, ereg1, ebit1) \ |
159 | { \ |
160 | TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \ |
161 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
162 | } |
163 | |
164 | #define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \ |
165 | shift, nbits, ereg0, ebit0, ereg1, ebit1) \ |
166 | { \ |
167 | TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
168 | min_uv, uv_step, vreg, shift, nbits, \ |
169 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
170 | } |
171 | |
172 | #define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \ |
173 | ereg0, ebit0, ereg1, ebit1) \ |
174 | { \ |
175 | TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \ |
176 | ereg0, ebit0, ereg1, ebit1, 0, 0) \ |
177 | } |
178 | |
179 | #define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \ |
180 | nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \ |
181 | { \ |
182 | TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \ |
183 | min_uv, uv_step, vreg, shift, nbits, \ |
184 | ereg0, ebit0, ereg1, ebit1, goreg, \ |
185 | gobit) \ |
186 | } |
187 | |
188 | #define TPS6586X_SYS_REGULATOR() \ |
189 | { \ |
190 | .desc = { \ |
191 | .supply_name = "sys", \ |
192 | .name = "REG-SYS", \ |
193 | .ops = &tps6586x_sys_regulator_ops, \ |
194 | .type = REGULATOR_VOLTAGE, \ |
195 | .id = TPS6586X_ID_SYS, \ |
196 | .owner = THIS_MODULE, \ |
197 | }, \ |
198 | } |
199 | |
200 | static struct tps6586x_regulator tps6586x_regulator[] = { |
201 | TPS6586X_SYS_REGULATOR(), |
202 | TPS6586X_LDO(LDO_0, "vinldo01" , tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0, |
203 | END, 0), |
204 | TPS6586X_LDO(LDO_3, "vinldo23" , tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2, |
205 | END, 2), |
206 | TPS6586X_LDO(LDO_5, "REG-SYS" , tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6, |
207 | ENE, 6), |
208 | TPS6586X_LDO(LDO_6, "vinldo678" , tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4, |
209 | END, 4), |
210 | TPS6586X_LDO(LDO_7, "vinldo678" , tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5, |
211 | END, 5), |
212 | TPS6586X_LDO(LDO_8, "vinldo678" , tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6, |
213 | END, 6), |
214 | TPS6586X_LDO(LDO_9, "vinldo9" , tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7, |
215 | ENE, 7), |
216 | TPS6586X_LDO(LDO_RTC, "REG-SYS" , tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7, |
217 | V4, 7), |
218 | TPS6586X_LDO_LINEAR(LDO_1, "vinldo01" , 32, 725000, 25000, SUPPLYV1, |
219 | 0, 5, ENC, 1, END, 1), |
220 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2" , 32, 3000000, 50000, SUPPLYV2, |
221 | 0, 5, ENC, 7, END, 7), |
222 | TPS6586X_DVM(LDO_2, "vinldo23" , 32, 725000, 25000, LDO2BV1, 0, 5, |
223 | ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)), |
224 | TPS6586X_DVM(LDO_4, "vinldo4" , 32, 1700000, 25000, LDO4V1, 0, 5, |
225 | ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)), |
226 | TPS6586X_DVM(SM_0, "vin-sm0" , 32, 725000, 25000, SM0V1, 0, 5, |
227 | ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)), |
228 | TPS6586X_DVM(SM_1, "vin-sm1" , 32, 725000, 25000, SM1V1, 0, 5, |
229 | ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)), |
230 | }; |
231 | |
232 | static struct tps6586x_regulator tps658623_regulator[] = { |
233 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2" , 32, 1700000, 25000, SUPPLYV2, |
234 | 0, 5, ENC, 7, END, 7), |
235 | }; |
236 | |
237 | static struct tps6586x_regulator tps658640_regulator[] = { |
238 | TPS6586X_LDO(LDO_3, "vinldo23" , tps6586x_ldo0, SUPPLYV4, 0, 3, |
239 | ENC, 2, END, 2), |
240 | TPS6586X_LDO(LDO_5, "REG-SYS" , tps6586x_ldo0, SUPPLYV6, 0, 3, |
241 | ENE, 6, ENE, 6), |
242 | TPS6586X_LDO(LDO_6, "vinldo678" , tps6586x_ldo0, SUPPLYV3, 0, 3, |
243 | ENC, 4, END, 4), |
244 | TPS6586X_LDO(LDO_7, "vinldo678" , tps6586x_ldo0, SUPPLYV3, 3, 3, |
245 | ENC, 5, END, 5), |
246 | TPS6586X_LDO(LDO_8, "vinldo678" , tps6586x_ldo0, SUPPLYV2, 5, 3, |
247 | ENC, 6, END, 6), |
248 | TPS6586X_LDO(LDO_9, "vinldo9" , tps6586x_ldo0, SUPPLYV6, 3, 3, |
249 | ENE, 7, ENE, 7), |
250 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2" , 32, 2150000, 50000, SUPPLYV2, |
251 | 0, 5, ENC, 7, END, 7), |
252 | |
253 | TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS" , tps658640_rtc, SUPPLYV4, 3, 2, |
254 | V4, 7, V4, 7), |
255 | }; |
256 | |
257 | static struct tps6586x_regulator tps658643_regulator[] = { |
258 | TPS6586X_LDO_LINEAR(SM_2, "vin-sm2" , 32, 1025000, 25000, SUPPLYV2, |
259 | 0, 5, ENC, 7, END, 7), |
260 | }; |
261 | |
262 | /* |
263 | * TPS6586X has 2 enable bits that are OR'ed to determine the actual |
264 | * regulator state. Clearing one of this bits allows switching |
265 | * regulator on and of with single register write. |
266 | */ |
267 | static inline int tps6586x_regulator_preinit(struct device *parent, |
268 | struct tps6586x_regulator *ri) |
269 | { |
270 | uint8_t val1, val2; |
271 | int ret; |
272 | |
273 | if (ri->enable_reg[0] == ri->enable_reg[1] && |
274 | ri->enable_bit[0] == ri->enable_bit[1]) |
275 | return 0; |
276 | |
277 | ret = tps6586x_read(dev: parent, reg: ri->enable_reg[0], val: &val1); |
278 | if (ret) |
279 | return ret; |
280 | |
281 | ret = tps6586x_read(dev: parent, reg: ri->enable_reg[1], val: &val2); |
282 | if (ret) |
283 | return ret; |
284 | |
285 | if (!(val2 & (1 << ri->enable_bit[1]))) |
286 | return 0; |
287 | |
288 | /* |
289 | * The regulator is on, but it's enabled with the bit we don't |
290 | * want to use, so we switch the enable bits |
291 | */ |
292 | if (!(val1 & (1 << ri->enable_bit[0]))) { |
293 | ret = tps6586x_set_bits(dev: parent, reg: ri->enable_reg[0], |
294 | bit_mask: 1 << ri->enable_bit[0]); |
295 | if (ret) |
296 | return ret; |
297 | } |
298 | |
299 | return tps6586x_clr_bits(dev: parent, reg: ri->enable_reg[1], |
300 | bit_mask: 1 << ri->enable_bit[1]); |
301 | } |
302 | |
303 | static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev, |
304 | int id, struct regulator_init_data *p) |
305 | { |
306 | struct device *parent = pdev->dev.parent; |
307 | struct tps6586x_settings *setting = p->driver_data; |
308 | uint8_t reg; |
309 | |
310 | if (setting == NULL) |
311 | return 0; |
312 | |
313 | if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET)) |
314 | return 0; |
315 | |
316 | /* only SM0 and SM1 can have the slew rate settings */ |
317 | switch (id) { |
318 | case TPS6586X_ID_SM_0: |
319 | reg = TPS6586X_SM0SL; |
320 | break; |
321 | case TPS6586X_ID_SM_1: |
322 | reg = TPS6586X_SM1SL; |
323 | break; |
324 | default: |
325 | dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n" ); |
326 | return -EINVAL; |
327 | } |
328 | |
329 | return tps6586x_write(dev: parent, reg, |
330 | val: setting->slew_rate & TPS6586X_SLEW_RATE_MASK); |
331 | } |
332 | |
333 | static struct tps6586x_regulator *find_regulator_info(int id, int version) |
334 | { |
335 | struct tps6586x_regulator *ri; |
336 | struct tps6586x_regulator *table = NULL; |
337 | int num; |
338 | int i; |
339 | |
340 | switch (version) { |
341 | case TPS658623: |
342 | case TPS658624: |
343 | table = tps658623_regulator; |
344 | num = ARRAY_SIZE(tps658623_regulator); |
345 | break; |
346 | case TPS658640: |
347 | case TPS658640v2: |
348 | table = tps658640_regulator; |
349 | num = ARRAY_SIZE(tps658640_regulator); |
350 | break; |
351 | case TPS658643: |
352 | table = tps658643_regulator; |
353 | num = ARRAY_SIZE(tps658643_regulator); |
354 | break; |
355 | } |
356 | |
357 | /* Search version specific table first */ |
358 | if (table) { |
359 | for (i = 0; i < num; i++) { |
360 | ri = &table[i]; |
361 | if (ri->desc.id == id) |
362 | return ri; |
363 | } |
364 | } |
365 | |
366 | for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) { |
367 | ri = &tps6586x_regulator[i]; |
368 | if (ri->desc.id == id) |
369 | return ri; |
370 | } |
371 | return NULL; |
372 | } |
373 | |
374 | #ifdef CONFIG_OF |
375 | static struct of_regulator_match tps6586x_matches[] = { |
376 | { .name = "sys" , .driver_data = (void *)TPS6586X_ID_SYS }, |
377 | { .name = "sm0" , .driver_data = (void *)TPS6586X_ID_SM_0 }, |
378 | { .name = "sm1" , .driver_data = (void *)TPS6586X_ID_SM_1 }, |
379 | { .name = "sm2" , .driver_data = (void *)TPS6586X_ID_SM_2 }, |
380 | { .name = "ldo0" , .driver_data = (void *)TPS6586X_ID_LDO_0 }, |
381 | { .name = "ldo1" , .driver_data = (void *)TPS6586X_ID_LDO_1 }, |
382 | { .name = "ldo2" , .driver_data = (void *)TPS6586X_ID_LDO_2 }, |
383 | { .name = "ldo3" , .driver_data = (void *)TPS6586X_ID_LDO_3 }, |
384 | { .name = "ldo4" , .driver_data = (void *)TPS6586X_ID_LDO_4 }, |
385 | { .name = "ldo5" , .driver_data = (void *)TPS6586X_ID_LDO_5 }, |
386 | { .name = "ldo6" , .driver_data = (void *)TPS6586X_ID_LDO_6 }, |
387 | { .name = "ldo7" , .driver_data = (void *)TPS6586X_ID_LDO_7 }, |
388 | { .name = "ldo8" , .driver_data = (void *)TPS6586X_ID_LDO_8 }, |
389 | { .name = "ldo9" , .driver_data = (void *)TPS6586X_ID_LDO_9 }, |
390 | { .name = "ldo_rtc" , .driver_data = (void *)TPS6586X_ID_LDO_RTC }, |
391 | }; |
392 | |
393 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
394 | struct platform_device *pdev, |
395 | struct of_regulator_match **tps6586x_reg_matches) |
396 | { |
397 | const unsigned int num = ARRAY_SIZE(tps6586x_matches); |
398 | struct device_node *np = pdev->dev.parent->of_node; |
399 | struct device_node *regs; |
400 | const char *sys_rail = NULL; |
401 | unsigned int i; |
402 | struct tps6586x_platform_data *pdata; |
403 | int err; |
404 | |
405 | regs = of_get_child_by_name(node: np, name: "regulators" ); |
406 | if (!regs) { |
407 | dev_err(&pdev->dev, "regulator node not found\n" ); |
408 | return NULL; |
409 | } |
410 | |
411 | err = of_regulator_match(dev: &pdev->dev, node: regs, matches: tps6586x_matches, num_matches: num); |
412 | of_node_put(node: regs); |
413 | if (err < 0) { |
414 | dev_err(&pdev->dev, "Regulator match failed, e %d\n" , err); |
415 | return NULL; |
416 | } |
417 | |
418 | pdata = devm_kzalloc(dev: &pdev->dev, size: sizeof(*pdata), GFP_KERNEL); |
419 | if (!pdata) |
420 | return NULL; |
421 | |
422 | for (i = 0; i < num; i++) { |
423 | uintptr_t id; |
424 | if (!tps6586x_matches[i].init_data) |
425 | continue; |
426 | |
427 | pdata->reg_init_data[i] = tps6586x_matches[i].init_data; |
428 | id = (uintptr_t)tps6586x_matches[i].driver_data; |
429 | if (id == TPS6586X_ID_SYS) |
430 | sys_rail = pdata->reg_init_data[i]->constraints.name; |
431 | |
432 | if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC)) |
433 | pdata->reg_init_data[i]->supply_regulator = sys_rail; |
434 | } |
435 | *tps6586x_reg_matches = tps6586x_matches; |
436 | return pdata; |
437 | } |
438 | #else |
439 | static struct tps6586x_platform_data *tps6586x_parse_regulator_dt( |
440 | struct platform_device *pdev, |
441 | struct of_regulator_match **tps6586x_reg_matches) |
442 | { |
443 | *tps6586x_reg_matches = NULL; |
444 | return NULL; |
445 | } |
446 | #endif |
447 | |
448 | static int tps6586x_regulator_probe(struct platform_device *pdev) |
449 | { |
450 | struct tps6586x_regulator *ri = NULL; |
451 | struct regulator_config config = { }; |
452 | struct regulator_dev *rdev; |
453 | struct regulator_init_data *reg_data; |
454 | struct tps6586x_platform_data *pdata; |
455 | struct of_regulator_match *tps6586x_reg_matches = NULL; |
456 | int version; |
457 | int id; |
458 | int err; |
459 | |
460 | dev_dbg(&pdev->dev, "Probing regulator\n" ); |
461 | |
462 | pdata = dev_get_platdata(dev: pdev->dev.parent); |
463 | if ((!pdata) && (pdev->dev.parent->of_node)) |
464 | pdata = tps6586x_parse_regulator_dt(pdev, |
465 | tps6586x_reg_matches: &tps6586x_reg_matches); |
466 | |
467 | if (!pdata) { |
468 | dev_err(&pdev->dev, "Platform data not available, exiting\n" ); |
469 | return -ENODEV; |
470 | } |
471 | |
472 | version = tps6586x_get_version(dev: pdev->dev.parent); |
473 | |
474 | for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) { |
475 | reg_data = pdata->reg_init_data[id]; |
476 | |
477 | ri = find_regulator_info(id, version); |
478 | |
479 | if (!ri) { |
480 | dev_err(&pdev->dev, "invalid regulator ID specified\n" ); |
481 | return -EINVAL; |
482 | } |
483 | |
484 | err = tps6586x_regulator_preinit(parent: pdev->dev.parent, ri); |
485 | if (err) { |
486 | dev_err(&pdev->dev, |
487 | "regulator %d preinit failed, e %d\n" , id, err); |
488 | return err; |
489 | } |
490 | |
491 | config.dev = pdev->dev.parent; |
492 | config.init_data = reg_data; |
493 | config.driver_data = ri; |
494 | |
495 | if (tps6586x_reg_matches) |
496 | config.of_node = tps6586x_reg_matches[id].of_node; |
497 | |
498 | rdev = devm_regulator_register(dev: &pdev->dev, regulator_desc: &ri->desc, config: &config); |
499 | if (IS_ERR(ptr: rdev)) { |
500 | dev_err(&pdev->dev, "failed to register regulator %s\n" , |
501 | ri->desc.name); |
502 | return PTR_ERR(ptr: rdev); |
503 | } |
504 | |
505 | if (reg_data) { |
506 | err = tps6586x_regulator_set_slew_rate(pdev, id, |
507 | p: reg_data); |
508 | if (err < 0) { |
509 | dev_err(&pdev->dev, |
510 | "Slew rate config failed, e %d\n" , err); |
511 | return err; |
512 | } |
513 | } |
514 | } |
515 | |
516 | platform_set_drvdata(pdev, data: rdev); |
517 | return 0; |
518 | } |
519 | |
520 | static struct platform_driver tps6586x_regulator_driver = { |
521 | .driver = { |
522 | .name = "tps6586x-regulator" , |
523 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
524 | }, |
525 | .probe = tps6586x_regulator_probe, |
526 | }; |
527 | |
528 | static int __init tps6586x_regulator_init(void) |
529 | { |
530 | return platform_driver_register(&tps6586x_regulator_driver); |
531 | } |
532 | subsys_initcall(tps6586x_regulator_init); |
533 | |
534 | static void __exit tps6586x_regulator_exit(void) |
535 | { |
536 | platform_driver_unregister(&tps6586x_regulator_driver); |
537 | } |
538 | module_exit(tps6586x_regulator_exit); |
539 | |
540 | MODULE_LICENSE("GPL" ); |
541 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>" ); |
542 | MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC" ); |
543 | MODULE_ALIAS("platform:tps6586x-regulator" ); |
544 | |