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46fc033e DC |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Copyright (c) 2018, The Linux Foundation. All rights reserved. | |
3 | ||
4 | #define pr_fmt(fmt) "%s: " fmt, __func__ | |
5 | ||
6 | #include <linux/err.h> | |
7 | #include <linux/kernel.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/of.h> | |
10 | #include <linux/of_device.h> | |
11 | #include <linux/platform_device.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/regulator/driver.h> | |
15 | #include <linux/regulator/machine.h> | |
16 | #include <linux/regulator/of_regulator.h> | |
17 | ||
18 | #include <soc/qcom/cmd-db.h> | |
19 | #include <soc/qcom/rpmh.h> | |
20 | ||
21 | #include <dt-bindings/regulator/qcom,rpmh-regulator.h> | |
22 | ||
23 | /** | |
24 | * enum rpmh_regulator_type - supported RPMh accelerator types | |
25 | * %VRM: RPMh VRM accelerator which supports voting on enable, voltage, | |
26 | * and mode of LDO, SMPS, and BOB type PMIC regulators. | |
27 | * %XOB: RPMh XOB accelerator which supports voting on the enable state | |
28 | * of PMIC regulators. | |
29 | */ | |
30 | enum rpmh_regulator_type { | |
31 | VRM, | |
32 | XOB, | |
33 | }; | |
34 | ||
35 | #define RPMH_REGULATOR_REG_VRM_VOLTAGE 0x0 | |
36 | #define RPMH_REGULATOR_REG_ENABLE 0x4 | |
37 | #define RPMH_REGULATOR_REG_VRM_MODE 0x8 | |
38 | ||
39 | #define PMIC4_LDO_MODE_RETENTION 4 | |
40 | #define PMIC4_LDO_MODE_LPM 5 | |
41 | #define PMIC4_LDO_MODE_HPM 7 | |
42 | ||
43 | #define PMIC4_SMPS_MODE_RETENTION 4 | |
44 | #define PMIC4_SMPS_MODE_PFM 5 | |
45 | #define PMIC4_SMPS_MODE_AUTO 6 | |
46 | #define PMIC4_SMPS_MODE_PWM 7 | |
47 | ||
48 | #define PMIC4_BOB_MODE_PASS 0 | |
49 | #define PMIC4_BOB_MODE_PFM 1 | |
50 | #define PMIC4_BOB_MODE_AUTO 2 | |
51 | #define PMIC4_BOB_MODE_PWM 3 | |
52 | ||
53 | /** | |
54 | * struct rpmh_vreg_hw_data - RPMh regulator hardware configurations | |
55 | * @regulator_type: RPMh accelerator type used to manage this | |
56 | * regulator | |
57 | * @ops: Pointer to regulator ops callback structure | |
58 | * @voltage_range: The single range of voltages supported by this | |
59 | * PMIC regulator type | |
60 | * @n_voltages: The number of unique voltage set points defined | |
61 | * by voltage_range | |
62 | * @hpm_min_load_uA: Minimum load current in microamps that requires | |
63 | * high power mode (HPM) operation. This is used | |
64 | * for LDO hardware type regulators only. | |
65 | * @pmic_mode_map: Array indexed by regulator framework mode | |
66 | * containing PMIC hardware modes. Must be large | |
67 | * enough to index all framework modes supported | |
68 | * by this regulator hardware type. | |
69 | * @of_map_mode: Maps an RPMH_REGULATOR_MODE_* mode value defined | |
70 | * in device tree to a regulator framework mode | |
71 | */ | |
72 | struct rpmh_vreg_hw_data { | |
73 | enum rpmh_regulator_type regulator_type; | |
74 | const struct regulator_ops *ops; | |
75 | const struct regulator_linear_range voltage_range; | |
76 | int n_voltages; | |
77 | int hpm_min_load_uA; | |
78 | const int *pmic_mode_map; | |
79 | unsigned int (*of_map_mode)(unsigned int mode); | |
80 | }; | |
81 | ||
82 | /** | |
83 | * struct rpmh_vreg - individual RPMh regulator data structure encapsulating a | |
84 | * single regulator device | |
85 | * @dev: Device pointer for the top-level PMIC RPMh | |
86 | * regulator parent device. This is used as a | |
87 | * handle in RPMh write requests. | |
88 | * @addr: Base address of the regulator resource within | |
89 | * an RPMh accelerator | |
90 | * @rdesc: Regulator descriptor | |
91 | * @hw_data: PMIC regulator configuration data for this RPMh | |
92 | * regulator | |
93 | * @always_wait_for_ack: Boolean flag indicating if a request must always | |
94 | * wait for an ACK from RPMh before continuing even | |
95 | * if it corresponds to a strictly lower power | |
96 | * state (e.g. enabled --> disabled). | |
97 | * @enabled: Flag indicating if the regulator is enabled or | |
98 | * not | |
99 | * @bypassed: Boolean indicating if the regulator is in | |
100 | * bypass (pass-through) mode or not. This is | |
101 | * only used by BOB rpmh-regulator resources. | |
102 | * @voltage_selector: Selector used for get_voltage_sel() and | |
103 | * set_voltage_sel() callbacks | |
104 | * @mode: RPMh VRM regulator current framework mode | |
105 | */ | |
106 | struct rpmh_vreg { | |
107 | struct device *dev; | |
108 | u32 addr; | |
109 | struct regulator_desc rdesc; | |
110 | const struct rpmh_vreg_hw_data *hw_data; | |
111 | bool always_wait_for_ack; | |
112 | ||
113 | int enabled; | |
114 | bool bypassed; | |
115 | int voltage_selector; | |
116 | unsigned int mode; | |
117 | }; | |
118 | ||
119 | /** | |
120 | * struct rpmh_vreg_init_data - initialization data for an RPMh regulator | |
121 | * @name: Name for the regulator which also corresponds | |
122 | * to the device tree subnode name of the regulator | |
123 | * @resource_name: RPMh regulator resource name format string. | |
124 | * This must include exactly one field: '%s' which | |
125 | * is filled at run-time with the PMIC ID provided | |
126 | * by device tree property qcom,pmic-id. Example: | |
127 | * "ldo%s1" for RPMh resource "ldoa1". | |
128 | * @supply_name: Parent supply regulator name | |
129 | * @hw_data: Configuration data for this PMIC regulator type | |
130 | */ | |
131 | struct rpmh_vreg_init_data { | |
132 | const char *name; | |
133 | const char *resource_name; | |
134 | const char *supply_name; | |
135 | const struct rpmh_vreg_hw_data *hw_data; | |
136 | }; | |
137 | ||
138 | /** | |
139 | * rpmh_regulator_send_request() - send the request to RPMh | |
140 | * @vreg: Pointer to the RPMh regulator | |
141 | * @cmd: Pointer to the RPMh command to send | |
142 | * @wait_for_ack: Boolean indicating if execution must wait until the | |
143 | * request has been acknowledged as complete | |
144 | * | |
145 | * Return: 0 on success, errno on failure | |
146 | */ | |
147 | static int rpmh_regulator_send_request(struct rpmh_vreg *vreg, | |
148 | struct tcs_cmd *cmd, bool wait_for_ack) | |
149 | { | |
150 | int ret; | |
151 | ||
152 | if (wait_for_ack || vreg->always_wait_for_ack) | |
153 | ret = rpmh_write(vreg->dev, RPMH_ACTIVE_ONLY_STATE, cmd, 1); | |
154 | else | |
155 | ret = rpmh_write_async(vreg->dev, RPMH_ACTIVE_ONLY_STATE, cmd, | |
156 | 1); | |
157 | ||
158 | return ret; | |
159 | } | |
160 | ||
161 | static int _rpmh_regulator_vrm_set_voltage_sel(struct regulator_dev *rdev, | |
162 | unsigned int selector, bool wait_for_ack) | |
163 | { | |
164 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
165 | struct tcs_cmd cmd = { | |
166 | .addr = vreg->addr + RPMH_REGULATOR_REG_VRM_VOLTAGE, | |
167 | }; | |
168 | int ret; | |
169 | ||
170 | /* VRM voltage control register is set with voltage in millivolts. */ | |
171 | cmd.data = DIV_ROUND_UP(regulator_list_voltage_linear_range(rdev, | |
172 | selector), 1000); | |
173 | ||
174 | ret = rpmh_regulator_send_request(vreg, &cmd, wait_for_ack); | |
175 | if (!ret) | |
176 | vreg->voltage_selector = selector; | |
177 | ||
178 | return ret; | |
179 | } | |
180 | ||
181 | static int rpmh_regulator_vrm_set_voltage_sel(struct regulator_dev *rdev, | |
182 | unsigned int selector) | |
183 | { | |
184 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
185 | ||
186 | if (vreg->enabled == -EINVAL) { | |
187 | /* | |
188 | * Cache the voltage and send it later when the regulator is | |
189 | * enabled or disabled. | |
190 | */ | |
191 | vreg->voltage_selector = selector; | |
192 | return 0; | |
193 | } | |
194 | ||
195 | return _rpmh_regulator_vrm_set_voltage_sel(rdev, selector, | |
196 | selector > vreg->voltage_selector); | |
197 | } | |
198 | ||
199 | static int rpmh_regulator_vrm_get_voltage_sel(struct regulator_dev *rdev) | |
200 | { | |
201 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
202 | ||
203 | return vreg->voltage_selector; | |
204 | } | |
205 | ||
206 | static int rpmh_regulator_is_enabled(struct regulator_dev *rdev) | |
207 | { | |
208 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
209 | ||
210 | return vreg->enabled; | |
211 | } | |
212 | ||
213 | static int rpmh_regulator_set_enable_state(struct regulator_dev *rdev, | |
214 | bool enable) | |
215 | { | |
216 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
217 | struct tcs_cmd cmd = { | |
218 | .addr = vreg->addr + RPMH_REGULATOR_REG_ENABLE, | |
219 | .data = enable, | |
220 | }; | |
221 | int ret; | |
222 | ||
223 | if (vreg->enabled == -EINVAL && | |
224 | vreg->voltage_selector != -ENOTRECOVERABLE) { | |
225 | ret = _rpmh_regulator_vrm_set_voltage_sel(rdev, | |
226 | vreg->voltage_selector, true); | |
227 | if (ret < 0) | |
228 | return ret; | |
229 | } | |
230 | ||
231 | ret = rpmh_regulator_send_request(vreg, &cmd, enable); | |
232 | if (!ret) | |
233 | vreg->enabled = enable; | |
234 | ||
235 | return ret; | |
236 | } | |
237 | ||
238 | static int rpmh_regulator_enable(struct regulator_dev *rdev) | |
239 | { | |
240 | return rpmh_regulator_set_enable_state(rdev, true); | |
241 | } | |
242 | ||
243 | static int rpmh_regulator_disable(struct regulator_dev *rdev) | |
244 | { | |
245 | return rpmh_regulator_set_enable_state(rdev, false); | |
246 | } | |
247 | ||
248 | static int rpmh_regulator_vrm_set_mode_bypass(struct rpmh_vreg *vreg, | |
249 | unsigned int mode, bool bypassed) | |
250 | { | |
251 | struct tcs_cmd cmd = { | |
252 | .addr = vreg->addr + RPMH_REGULATOR_REG_VRM_MODE, | |
253 | }; | |
254 | int pmic_mode; | |
255 | ||
256 | if (mode > REGULATOR_MODE_STANDBY) | |
257 | return -EINVAL; | |
258 | ||
259 | pmic_mode = vreg->hw_data->pmic_mode_map[mode]; | |
260 | if (pmic_mode < 0) | |
261 | return pmic_mode; | |
262 | ||
263 | if (bypassed) | |
264 | cmd.data = PMIC4_BOB_MODE_PASS; | |
265 | else | |
266 | cmd.data = pmic_mode; | |
267 | ||
268 | return rpmh_regulator_send_request(vreg, &cmd, true); | |
269 | } | |
270 | ||
271 | static int rpmh_regulator_vrm_set_mode(struct regulator_dev *rdev, | |
272 | unsigned int mode) | |
273 | { | |
274 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
275 | int ret; | |
276 | ||
277 | if (mode == vreg->mode) | |
278 | return 0; | |
279 | ||
280 | ret = rpmh_regulator_vrm_set_mode_bypass(vreg, mode, vreg->bypassed); | |
281 | if (!ret) | |
282 | vreg->mode = mode; | |
283 | ||
284 | return ret; | |
285 | } | |
286 | ||
287 | static unsigned int rpmh_regulator_vrm_get_mode(struct regulator_dev *rdev) | |
288 | { | |
289 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
290 | ||
291 | return vreg->mode; | |
292 | } | |
293 | ||
294 | /** | |
295 | * rpmh_regulator_vrm_set_load() - set the regulator mode based upon the load | |
296 | * current requested | |
297 | * @rdev: Regulator device pointer for the rpmh-regulator | |
298 | * @load_uA: Aggregated load current in microamps | |
299 | * | |
300 | * This function is used in the regulator_ops for VRM type RPMh regulator | |
301 | * devices. | |
302 | * | |
303 | * Return: 0 on success, errno on failure | |
304 | */ | |
305 | static int rpmh_regulator_vrm_set_load(struct regulator_dev *rdev, int load_uA) | |
306 | { | |
307 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
308 | unsigned int mode; | |
309 | ||
310 | if (load_uA >= vreg->hw_data->hpm_min_load_uA) | |
311 | mode = REGULATOR_MODE_NORMAL; | |
312 | else | |
313 | mode = REGULATOR_MODE_IDLE; | |
314 | ||
315 | return rpmh_regulator_vrm_set_mode(rdev, mode); | |
316 | } | |
317 | ||
318 | static int rpmh_regulator_vrm_set_bypass(struct regulator_dev *rdev, | |
319 | bool enable) | |
320 | { | |
321 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
322 | int ret; | |
323 | ||
324 | if (vreg->bypassed == enable) | |
325 | return 0; | |
326 | ||
327 | ret = rpmh_regulator_vrm_set_mode_bypass(vreg, vreg->mode, enable); | |
328 | if (!ret) | |
329 | vreg->bypassed = enable; | |
330 | ||
331 | return ret; | |
332 | } | |
333 | ||
334 | static int rpmh_regulator_vrm_get_bypass(struct regulator_dev *rdev, | |
335 | bool *enable) | |
336 | { | |
337 | struct rpmh_vreg *vreg = rdev_get_drvdata(rdev); | |
338 | ||
339 | *enable = vreg->bypassed; | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | static const struct regulator_ops rpmh_regulator_vrm_ops = { | |
345 | .enable = rpmh_regulator_enable, | |
346 | .disable = rpmh_regulator_disable, | |
347 | .is_enabled = rpmh_regulator_is_enabled, | |
348 | .set_voltage_sel = rpmh_regulator_vrm_set_voltage_sel, | |
349 | .get_voltage_sel = rpmh_regulator_vrm_get_voltage_sel, | |
350 | .list_voltage = regulator_list_voltage_linear_range, | |
351 | .set_mode = rpmh_regulator_vrm_set_mode, | |
352 | .get_mode = rpmh_regulator_vrm_get_mode, | |
353 | }; | |
354 | ||
355 | static const struct regulator_ops rpmh_regulator_vrm_drms_ops = { | |
356 | .enable = rpmh_regulator_enable, | |
357 | .disable = rpmh_regulator_disable, | |
358 | .is_enabled = rpmh_regulator_is_enabled, | |
359 | .set_voltage_sel = rpmh_regulator_vrm_set_voltage_sel, | |
360 | .get_voltage_sel = rpmh_regulator_vrm_get_voltage_sel, | |
361 | .list_voltage = regulator_list_voltage_linear_range, | |
362 | .set_mode = rpmh_regulator_vrm_set_mode, | |
363 | .get_mode = rpmh_regulator_vrm_get_mode, | |
364 | .set_load = rpmh_regulator_vrm_set_load, | |
365 | }; | |
366 | ||
367 | static const struct regulator_ops rpmh_regulator_vrm_bypass_ops = { | |
368 | .enable = rpmh_regulator_enable, | |
369 | .disable = rpmh_regulator_disable, | |
370 | .is_enabled = rpmh_regulator_is_enabled, | |
371 | .set_voltage_sel = rpmh_regulator_vrm_set_voltage_sel, | |
372 | .get_voltage_sel = rpmh_regulator_vrm_get_voltage_sel, | |
373 | .list_voltage = regulator_list_voltage_linear_range, | |
374 | .set_mode = rpmh_regulator_vrm_set_mode, | |
375 | .get_mode = rpmh_regulator_vrm_get_mode, | |
376 | .set_bypass = rpmh_regulator_vrm_set_bypass, | |
377 | .get_bypass = rpmh_regulator_vrm_get_bypass, | |
378 | }; | |
379 | ||
380 | static const struct regulator_ops rpmh_regulator_xob_ops = { | |
381 | .enable = rpmh_regulator_enable, | |
382 | .disable = rpmh_regulator_disable, | |
383 | .is_enabled = rpmh_regulator_is_enabled, | |
384 | }; | |
385 | ||
386 | /** | |
387 | * rpmh_regulator_init_vreg() - initialize all attributes of an rpmh-regulator | |
388 | * vreg: Pointer to the individual rpmh-regulator resource | |
389 | * dev: Pointer to the top level rpmh-regulator PMIC device | |
390 | * node: Pointer to the individual rpmh-regulator resource | |
391 | * device node | |
392 | * pmic_id: String used to identify the top level rpmh-regulator | |
393 | * PMIC device on the board | |
394 | * pmic_rpmh_data: Pointer to a null-terminated array of rpmh-regulator | |
395 | * resources defined for the top level PMIC device | |
396 | * | |
397 | * Return: 0 on success, errno on failure | |
398 | */ | |
399 | static int rpmh_regulator_init_vreg(struct rpmh_vreg *vreg, struct device *dev, | |
400 | struct device_node *node, const char *pmic_id, | |
401 | const struct rpmh_vreg_init_data *pmic_rpmh_data) | |
402 | { | |
403 | struct regulator_config reg_config = {}; | |
404 | char rpmh_resource_name[20] = ""; | |
405 | const struct rpmh_vreg_init_data *rpmh_data; | |
406 | struct regulator_init_data *init_data; | |
407 | struct regulator_dev *rdev; | |
408 | int ret; | |
409 | ||
410 | vreg->dev = dev; | |
411 | ||
412 | for (rpmh_data = pmic_rpmh_data; rpmh_data->name; rpmh_data++) | |
c32569e3 | 413 | if (of_node_name_eq(node, rpmh_data->name)) |
46fc033e DC |
414 | break; |
415 | ||
416 | if (!rpmh_data->name) { | |
0c9721a5 | 417 | dev_err(dev, "Unknown regulator %pOFn\n", node); |
46fc033e DC |
418 | return -EINVAL; |
419 | } | |
420 | ||
421 | scnprintf(rpmh_resource_name, sizeof(rpmh_resource_name), | |
422 | rpmh_data->resource_name, pmic_id); | |
423 | ||
424 | vreg->addr = cmd_db_read_addr(rpmh_resource_name); | |
425 | if (!vreg->addr) { | |
0c9721a5 RH |
426 | dev_err(dev, "%pOFn: could not find RPMh address for resource %s\n", |
427 | node, rpmh_resource_name); | |
46fc033e DC |
428 | return -ENODEV; |
429 | } | |
430 | ||
431 | vreg->rdesc.name = rpmh_data->name; | |
432 | vreg->rdesc.supply_name = rpmh_data->supply_name; | |
433 | vreg->hw_data = rpmh_data->hw_data; | |
434 | ||
435 | vreg->enabled = -EINVAL; | |
436 | vreg->voltage_selector = -ENOTRECOVERABLE; | |
437 | vreg->mode = REGULATOR_MODE_INVALID; | |
438 | ||
439 | if (rpmh_data->hw_data->n_voltages) { | |
440 | vreg->rdesc.linear_ranges = &rpmh_data->hw_data->voltage_range; | |
441 | vreg->rdesc.n_linear_ranges = 1; | |
442 | vreg->rdesc.n_voltages = rpmh_data->hw_data->n_voltages; | |
443 | } | |
444 | ||
445 | vreg->always_wait_for_ack = of_property_read_bool(node, | |
446 | "qcom,always-wait-for-ack"); | |
447 | ||
448 | vreg->rdesc.owner = THIS_MODULE; | |
449 | vreg->rdesc.type = REGULATOR_VOLTAGE; | |
450 | vreg->rdesc.ops = vreg->hw_data->ops; | |
451 | vreg->rdesc.of_map_mode = vreg->hw_data->of_map_mode; | |
452 | ||
453 | init_data = of_get_regulator_init_data(dev, node, &vreg->rdesc); | |
454 | if (!init_data) | |
455 | return -ENOMEM; | |
456 | ||
457 | if (rpmh_data->hw_data->regulator_type == XOB && | |
458 | init_data->constraints.min_uV && | |
459 | init_data->constraints.min_uV == init_data->constraints.max_uV) { | |
460 | vreg->rdesc.fixed_uV = init_data->constraints.min_uV; | |
461 | vreg->rdesc.n_voltages = 1; | |
462 | } | |
463 | ||
464 | reg_config.dev = dev; | |
465 | reg_config.init_data = init_data; | |
466 | reg_config.of_node = node; | |
467 | reg_config.driver_data = vreg; | |
468 | ||
469 | rdev = devm_regulator_register(dev, &vreg->rdesc, ®_config); | |
470 | if (IS_ERR(rdev)) { | |
471 | ret = PTR_ERR(rdev); | |
0c9721a5 RH |
472 | dev_err(dev, "%pOFn: devm_regulator_register() failed, ret=%d\n", |
473 | node, ret); | |
46fc033e DC |
474 | return ret; |
475 | } | |
476 | ||
0c9721a5 RH |
477 | dev_dbg(dev, "%pOFn regulator registered for RPMh resource %s @ 0x%05X\n", |
478 | node, rpmh_resource_name, vreg->addr); | |
46fc033e DC |
479 | |
480 | return 0; | |
481 | } | |
482 | ||
483 | static const int pmic_mode_map_pmic4_ldo[REGULATOR_MODE_STANDBY + 1] = { | |
484 | [REGULATOR_MODE_INVALID] = -EINVAL, | |
485 | [REGULATOR_MODE_STANDBY] = PMIC4_LDO_MODE_RETENTION, | |
486 | [REGULATOR_MODE_IDLE] = PMIC4_LDO_MODE_LPM, | |
487 | [REGULATOR_MODE_NORMAL] = PMIC4_LDO_MODE_HPM, | |
488 | [REGULATOR_MODE_FAST] = -EINVAL, | |
489 | }; | |
490 | ||
491 | static unsigned int rpmh_regulator_pmic4_ldo_of_map_mode(unsigned int rpmh_mode) | |
492 | { | |
493 | unsigned int mode; | |
494 | ||
495 | switch (rpmh_mode) { | |
496 | case RPMH_REGULATOR_MODE_HPM: | |
497 | mode = REGULATOR_MODE_NORMAL; | |
498 | break; | |
499 | case RPMH_REGULATOR_MODE_LPM: | |
500 | mode = REGULATOR_MODE_IDLE; | |
501 | break; | |
502 | case RPMH_REGULATOR_MODE_RET: | |
503 | mode = REGULATOR_MODE_STANDBY; | |
504 | break; | |
505 | default: | |
506 | mode = REGULATOR_MODE_INVALID; | |
beb5a17f | 507 | break; |
46fc033e DC |
508 | } |
509 | ||
510 | return mode; | |
511 | } | |
512 | ||
513 | static const int pmic_mode_map_pmic4_smps[REGULATOR_MODE_STANDBY + 1] = { | |
514 | [REGULATOR_MODE_INVALID] = -EINVAL, | |
515 | [REGULATOR_MODE_STANDBY] = PMIC4_SMPS_MODE_RETENTION, | |
516 | [REGULATOR_MODE_IDLE] = PMIC4_SMPS_MODE_PFM, | |
517 | [REGULATOR_MODE_NORMAL] = PMIC4_SMPS_MODE_AUTO, | |
518 | [REGULATOR_MODE_FAST] = PMIC4_SMPS_MODE_PWM, | |
519 | }; | |
520 | ||
521 | static unsigned int | |
522 | rpmh_regulator_pmic4_smps_of_map_mode(unsigned int rpmh_mode) | |
523 | { | |
524 | unsigned int mode; | |
525 | ||
526 | switch (rpmh_mode) { | |
527 | case RPMH_REGULATOR_MODE_HPM: | |
528 | mode = REGULATOR_MODE_FAST; | |
529 | break; | |
530 | case RPMH_REGULATOR_MODE_AUTO: | |
531 | mode = REGULATOR_MODE_NORMAL; | |
532 | break; | |
533 | case RPMH_REGULATOR_MODE_LPM: | |
534 | mode = REGULATOR_MODE_IDLE; | |
535 | break; | |
536 | case RPMH_REGULATOR_MODE_RET: | |
537 | mode = REGULATOR_MODE_STANDBY; | |
538 | break; | |
539 | default: | |
540 | mode = REGULATOR_MODE_INVALID; | |
beb5a17f | 541 | break; |
46fc033e DC |
542 | } |
543 | ||
544 | return mode; | |
545 | } | |
546 | ||
547 | static const int pmic_mode_map_pmic4_bob[REGULATOR_MODE_STANDBY + 1] = { | |
548 | [REGULATOR_MODE_INVALID] = -EINVAL, | |
549 | [REGULATOR_MODE_STANDBY] = -EINVAL, | |
550 | [REGULATOR_MODE_IDLE] = PMIC4_BOB_MODE_PFM, | |
551 | [REGULATOR_MODE_NORMAL] = PMIC4_BOB_MODE_AUTO, | |
552 | [REGULATOR_MODE_FAST] = PMIC4_BOB_MODE_PWM, | |
553 | }; | |
554 | ||
555 | static unsigned int rpmh_regulator_pmic4_bob_of_map_mode(unsigned int rpmh_mode) | |
556 | { | |
557 | unsigned int mode; | |
558 | ||
559 | switch (rpmh_mode) { | |
560 | case RPMH_REGULATOR_MODE_HPM: | |
561 | mode = REGULATOR_MODE_FAST; | |
562 | break; | |
563 | case RPMH_REGULATOR_MODE_AUTO: | |
564 | mode = REGULATOR_MODE_NORMAL; | |
565 | break; | |
566 | case RPMH_REGULATOR_MODE_LPM: | |
567 | mode = REGULATOR_MODE_IDLE; | |
568 | break; | |
569 | default: | |
570 | mode = REGULATOR_MODE_INVALID; | |
beb5a17f | 571 | break; |
46fc033e DC |
572 | } |
573 | ||
574 | return mode; | |
575 | } | |
576 | ||
577 | static const struct rpmh_vreg_hw_data pmic4_pldo = { | |
578 | .regulator_type = VRM, | |
579 | .ops = &rpmh_regulator_vrm_drms_ops, | |
580 | .voltage_range = REGULATOR_LINEAR_RANGE(1664000, 0, 255, 8000), | |
581 | .n_voltages = 256, | |
582 | .hpm_min_load_uA = 10000, | |
583 | .pmic_mode_map = pmic_mode_map_pmic4_ldo, | |
584 | .of_map_mode = rpmh_regulator_pmic4_ldo_of_map_mode, | |
585 | }; | |
586 | ||
587 | static const struct rpmh_vreg_hw_data pmic4_pldo_lv = { | |
588 | .regulator_type = VRM, | |
589 | .ops = &rpmh_regulator_vrm_drms_ops, | |
590 | .voltage_range = REGULATOR_LINEAR_RANGE(1256000, 0, 127, 8000), | |
591 | .n_voltages = 128, | |
592 | .hpm_min_load_uA = 10000, | |
593 | .pmic_mode_map = pmic_mode_map_pmic4_ldo, | |
594 | .of_map_mode = rpmh_regulator_pmic4_ldo_of_map_mode, | |
595 | }; | |
596 | ||
597 | static const struct rpmh_vreg_hw_data pmic4_nldo = { | |
598 | .regulator_type = VRM, | |
599 | .ops = &rpmh_regulator_vrm_drms_ops, | |
600 | .voltage_range = REGULATOR_LINEAR_RANGE(312000, 0, 127, 8000), | |
601 | .n_voltages = 128, | |
602 | .hpm_min_load_uA = 30000, | |
603 | .pmic_mode_map = pmic_mode_map_pmic4_ldo, | |
604 | .of_map_mode = rpmh_regulator_pmic4_ldo_of_map_mode, | |
605 | }; | |
606 | ||
607 | static const struct rpmh_vreg_hw_data pmic4_hfsmps3 = { | |
608 | .regulator_type = VRM, | |
609 | .ops = &rpmh_regulator_vrm_ops, | |
610 | .voltage_range = REGULATOR_LINEAR_RANGE(320000, 0, 215, 8000), | |
611 | .n_voltages = 216, | |
612 | .pmic_mode_map = pmic_mode_map_pmic4_smps, | |
613 | .of_map_mode = rpmh_regulator_pmic4_smps_of_map_mode, | |
614 | }; | |
615 | ||
616 | static const struct rpmh_vreg_hw_data pmic4_ftsmps426 = { | |
617 | .regulator_type = VRM, | |
618 | .ops = &rpmh_regulator_vrm_ops, | |
619 | .voltage_range = REGULATOR_LINEAR_RANGE(320000, 0, 258, 4000), | |
620 | .n_voltages = 259, | |
621 | .pmic_mode_map = pmic_mode_map_pmic4_smps, | |
622 | .of_map_mode = rpmh_regulator_pmic4_smps_of_map_mode, | |
623 | }; | |
624 | ||
625 | static const struct rpmh_vreg_hw_data pmic4_bob = { | |
626 | .regulator_type = VRM, | |
627 | .ops = &rpmh_regulator_vrm_bypass_ops, | |
628 | .voltage_range = REGULATOR_LINEAR_RANGE(1824000, 0, 83, 32000), | |
629 | .n_voltages = 84, | |
630 | .pmic_mode_map = pmic_mode_map_pmic4_bob, | |
631 | .of_map_mode = rpmh_regulator_pmic4_bob_of_map_mode, | |
632 | }; | |
633 | ||
634 | static const struct rpmh_vreg_hw_data pmic4_lvs = { | |
635 | .regulator_type = XOB, | |
636 | .ops = &rpmh_regulator_xob_ops, | |
637 | /* LVS hardware does not support voltage or mode configuration. */ | |
638 | }; | |
639 | ||
640 | #define RPMH_VREG(_name, _resource_name, _hw_data, _supply_name) \ | |
641 | { \ | |
642 | .name = _name, \ | |
643 | .resource_name = _resource_name, \ | |
644 | .hw_data = _hw_data, \ | |
645 | .supply_name = _supply_name, \ | |
646 | } | |
647 | ||
648 | static const struct rpmh_vreg_init_data pm8998_vreg_data[] = { | |
649 | RPMH_VREG("smps1", "smp%s1", &pmic4_ftsmps426, "vdd-s1"), | |
650 | RPMH_VREG("smps2", "smp%s2", &pmic4_ftsmps426, "vdd-s2"), | |
651 | RPMH_VREG("smps3", "smp%s3", &pmic4_hfsmps3, "vdd-s3"), | |
652 | RPMH_VREG("smps4", "smp%s4", &pmic4_hfsmps3, "vdd-s4"), | |
653 | RPMH_VREG("smps5", "smp%s5", &pmic4_hfsmps3, "vdd-s5"), | |
654 | RPMH_VREG("smps6", "smp%s6", &pmic4_ftsmps426, "vdd-s6"), | |
655 | RPMH_VREG("smps7", "smp%s7", &pmic4_ftsmps426, "vdd-s7"), | |
656 | RPMH_VREG("smps8", "smp%s8", &pmic4_ftsmps426, "vdd-s8"), | |
657 | RPMH_VREG("smps9", "smp%s9", &pmic4_ftsmps426, "vdd-s9"), | |
658 | RPMH_VREG("smps10", "smp%s10", &pmic4_ftsmps426, "vdd-s10"), | |
659 | RPMH_VREG("smps11", "smp%s11", &pmic4_ftsmps426, "vdd-s11"), | |
660 | RPMH_VREG("smps12", "smp%s12", &pmic4_ftsmps426, "vdd-s12"), | |
661 | RPMH_VREG("smps13", "smp%s13", &pmic4_ftsmps426, "vdd-s13"), | |
662 | RPMH_VREG("ldo1", "ldo%s1", &pmic4_nldo, "vdd-l1-l27"), | |
663 | RPMH_VREG("ldo2", "ldo%s2", &pmic4_nldo, "vdd-l2-l8-l17"), | |
664 | RPMH_VREG("ldo3", "ldo%s3", &pmic4_nldo, "vdd-l3-l11"), | |
665 | RPMH_VREG("ldo4", "ldo%s4", &pmic4_nldo, "vdd-l4-l5"), | |
666 | RPMH_VREG("ldo5", "ldo%s5", &pmic4_nldo, "vdd-l4-l5"), | |
667 | RPMH_VREG("ldo6", "ldo%s6", &pmic4_pldo, "vdd-l6"), | |
668 | RPMH_VREG("ldo7", "ldo%s7", &pmic4_pldo_lv, "vdd-l7-l12-l14-l15"), | |
669 | RPMH_VREG("ldo8", "ldo%s8", &pmic4_nldo, "vdd-l2-l8-l17"), | |
670 | RPMH_VREG("ldo9", "ldo%s9", &pmic4_pldo, "vdd-l9"), | |
671 | RPMH_VREG("ldo10", "ldo%s10", &pmic4_pldo, "vdd-l10-l23-l25"), | |
672 | RPMH_VREG("ldo11", "ldo%s11", &pmic4_nldo, "vdd-l3-l11"), | |
673 | RPMH_VREG("ldo12", "ldo%s12", &pmic4_pldo_lv, "vdd-l7-l12-l14-l15"), | |
674 | RPMH_VREG("ldo13", "ldo%s13", &pmic4_pldo, "vdd-l13-l19-l21"), | |
675 | RPMH_VREG("ldo14", "ldo%s14", &pmic4_pldo_lv, "vdd-l7-l12-l14-l15"), | |
676 | RPMH_VREG("ldo15", "ldo%s15", &pmic4_pldo_lv, "vdd-l7-l12-l14-l15"), | |
677 | RPMH_VREG("ldo16", "ldo%s16", &pmic4_pldo, "vdd-l16-l28"), | |
678 | RPMH_VREG("ldo17", "ldo%s17", &pmic4_nldo, "vdd-l2-l8-l17"), | |
679 | RPMH_VREG("ldo18", "ldo%s18", &pmic4_pldo, "vdd-l18-l22"), | |
680 | RPMH_VREG("ldo19", "ldo%s19", &pmic4_pldo, "vdd-l13-l19-l21"), | |
681 | RPMH_VREG("ldo20", "ldo%s20", &pmic4_pldo, "vdd-l20-l24"), | |
682 | RPMH_VREG("ldo21", "ldo%s21", &pmic4_pldo, "vdd-l13-l19-l21"), | |
683 | RPMH_VREG("ldo22", "ldo%s22", &pmic4_pldo, "vdd-l18-l22"), | |
684 | RPMH_VREG("ldo23", "ldo%s23", &pmic4_pldo, "vdd-l10-l23-l25"), | |
685 | RPMH_VREG("ldo24", "ldo%s24", &pmic4_pldo, "vdd-l20-l24"), | |
686 | RPMH_VREG("ldo25", "ldo%s25", &pmic4_pldo, "vdd-l10-l23-l25"), | |
687 | RPMH_VREG("ldo26", "ldo%s26", &pmic4_nldo, "vdd-l26"), | |
688 | RPMH_VREG("ldo27", "ldo%s27", &pmic4_nldo, "vdd-l1-l27"), | |
689 | RPMH_VREG("ldo28", "ldo%s28", &pmic4_pldo, "vdd-l16-l28"), | |
690 | RPMH_VREG("lvs1", "vs%s1", &pmic4_lvs, "vin-lvs-1-2"), | |
691 | RPMH_VREG("lvs2", "vs%s2", &pmic4_lvs, "vin-lvs-1-2"), | |
692 | {}, | |
693 | }; | |
694 | ||
695 | static const struct rpmh_vreg_init_data pmi8998_vreg_data[] = { | |
696 | RPMH_VREG("bob", "bob%s1", &pmic4_bob, "vdd-bob"), | |
697 | {}, | |
698 | }; | |
699 | ||
700 | static const struct rpmh_vreg_init_data pm8005_vreg_data[] = { | |
701 | RPMH_VREG("smps1", "smp%s1", &pmic4_ftsmps426, "vdd-s1"), | |
702 | RPMH_VREG("smps2", "smp%s2", &pmic4_ftsmps426, "vdd-s2"), | |
703 | RPMH_VREG("smps3", "smp%s3", &pmic4_ftsmps426, "vdd-s3"), | |
704 | RPMH_VREG("smps4", "smp%s4", &pmic4_ftsmps426, "vdd-s4"), | |
705 | {}, | |
706 | }; | |
707 | ||
708 | static int rpmh_regulator_probe(struct platform_device *pdev) | |
709 | { | |
710 | struct device *dev = &pdev->dev; | |
711 | const struct rpmh_vreg_init_data *vreg_data; | |
712 | struct device_node *node; | |
713 | struct rpmh_vreg *vreg; | |
714 | const char *pmic_id; | |
715 | int ret; | |
716 | ||
717 | vreg_data = of_device_get_match_data(dev); | |
718 | if (!vreg_data) | |
719 | return -ENODEV; | |
720 | ||
721 | ret = of_property_read_string(dev->of_node, "qcom,pmic-id", &pmic_id); | |
722 | if (ret < 0) { | |
723 | dev_err(dev, "qcom,pmic-id missing in DT node\n"); | |
724 | return ret; | |
725 | } | |
726 | ||
727 | for_each_available_child_of_node(dev->of_node, node) { | |
728 | vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); | |
729 | if (!vreg) { | |
730 | of_node_put(node); | |
731 | return -ENOMEM; | |
732 | } | |
733 | ||
734 | ret = rpmh_regulator_init_vreg(vreg, dev, node, pmic_id, | |
735 | vreg_data); | |
736 | if (ret < 0) { | |
737 | of_node_put(node); | |
738 | return ret; | |
739 | } | |
740 | } | |
741 | ||
742 | return 0; | |
743 | } | |
744 | ||
745 | static const struct of_device_id rpmh_regulator_match_table[] = { | |
746 | { | |
747 | .compatible = "qcom,pm8998-rpmh-regulators", | |
748 | .data = pm8998_vreg_data, | |
749 | }, | |
750 | { | |
751 | .compatible = "qcom,pmi8998-rpmh-regulators", | |
752 | .data = pmi8998_vreg_data, | |
753 | }, | |
754 | { | |
755 | .compatible = "qcom,pm8005-rpmh-regulators", | |
756 | .data = pm8005_vreg_data, | |
757 | }, | |
758 | {} | |
759 | }; | |
760 | MODULE_DEVICE_TABLE(of, rpmh_regulator_match_table); | |
761 | ||
762 | static struct platform_driver rpmh_regulator_driver = { | |
763 | .driver = { | |
764 | .name = "qcom-rpmh-regulator", | |
765 | .of_match_table = of_match_ptr(rpmh_regulator_match_table), | |
766 | }, | |
767 | .probe = rpmh_regulator_probe, | |
768 | }; | |
769 | module_platform_driver(rpmh_regulator_driver); | |
770 | ||
771 | MODULE_DESCRIPTION("Qualcomm RPMh regulator driver"); | |
772 | MODULE_LICENSE("GPL v2"); |