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 */
30enum 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 */
72struct 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 */
106struct 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 */
131struct 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 */
147static 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
161static 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
181static 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
199static 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
206static 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
213static 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
238static int rpmh_regulator_enable(struct regulator_dev *rdev)
239{
240 return rpmh_regulator_set_enable_state(rdev, true);
241}
242
243static int rpmh_regulator_disable(struct regulator_dev *rdev)
244{
245 return rpmh_regulator_set_enable_state(rdev, false);
246}
247
248static 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
271static 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
287static 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 */
305static 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
318static 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
334static 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
344static 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
355static 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
367static 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
380static 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 */
399static 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++)
413 if (of_node_name_eq(node, rpmh_data->name))
414 break;
415
416 if (!rpmh_data->name) {
417 dev_err(dev, "Unknown regulator %pOFn\n", node);
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) {
426 dev_err(dev, "%pOFn: could not find RPMh address for resource %s\n",
427 node, rpmh_resource_name);
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, &reg_config);
470 if (IS_ERR(rdev)) {
471 ret = PTR_ERR(rdev);
472 dev_err(dev, "%pOFn: devm_regulator_register() failed, ret=%d\n",
473 node, ret);
474 return ret;
475 }
476
477 dev_dbg(dev, "%pOFn regulator registered for RPMh resource %s @ 0x%05X\n",
478 node, rpmh_resource_name, vreg->addr);
479
480 return 0;
481}
482
483static 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
491static 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;
507 break;
508 }
509
510 return mode;
511}
512
513static 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
521static unsigned int
522rpmh_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;
541 break;
542 }
543
544 return mode;
545}
546
547static 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
555static 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;
571 break;
572 }
573
574 return mode;
575}
576
577static 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
587static 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
597static 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
607static 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
616static 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
625static 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
634static 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
648static 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
695static const struct rpmh_vreg_init_data pmi8998_vreg_data[] = {
696 RPMH_VREG("bob", "bob%s1", &pmic4_bob, "vdd-bob"),
697 {},
698};
699
700static 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
708static 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
745static 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};
760MODULE_DEVICE_TABLE(of, rpmh_regulator_match_table);
761
762static 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};
769module_platform_driver(rpmh_regulator_driver);
770
771MODULE_DESCRIPTION("Qualcomm RPMh regulator driver");
772MODULE_LICENSE("GPL v2");
773