1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018 Samsung Electronics
4 * Jaehoon Chung <jh80.chung@samsung.com>
12 #include <linux/delay.h>
13 #include <power/pmic.h>
14 #include <power/regulator.h>
15 #include <power/s2mps11.h>
17 #define MODE(_id, _val, _name) { \
19 .register_value = _val, \
23 /* BUCK : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 */
24 static struct dm_regulator_mode s2mps11_buck_modes[] = {
25 MODE(OP_OFF, S2MPS11_BUCK_MODE_OFF, "OFF"),
26 MODE(OP_STANDBY, S2MPS11_BUCK_MODE_STANDBY, "ON/OFF"),
27 MODE(OP_ON, S2MPS11_BUCK_MODE_STANDBY, "ON"),
30 static struct dm_regulator_mode s2mps11_ldo_modes[] = {
31 MODE(OP_OFF, S2MPS11_LDO_MODE_OFF, "OFF"),
32 MODE(OP_STANDBY, S2MPS11_LDO_MODE_STANDBY, "ON/OFF"),
33 MODE(OP_STANDBY_LPM, S2MPS11_LDO_MODE_STANDBY_LPM, "ON/LPM"),
34 MODE(OP_ON, S2MPS11_LDO_MODE_ON, "ON"),
37 static const char s2mps11_buck_ctrl[] = {
38 0xff, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x33, 0x35, 0x37, 0x39, 0x3b
41 static const char s2mps11_buck_out[] = {
42 0xff, 0x26, 0x28, 0x2a, 0x2c, 0x2f, 0x34, 0x36, 0x38, 0x3a, 0x3c
45 static int s2mps11_buck_hex2volt(int buck, int hex)
56 if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
59 uV = hex * S2MPS11_BUCK_HSTEP + S2MPS11_BUCK_UV_HMIN;
62 if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
64 uV = hex * S2MPS11_BUCK9_STEP * 2 + S2MPS11_BUCK9_UV_MIN;
67 if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
69 else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
72 uV = hex * S2MPS11_BUCK_LSTEP + S2MPS11_BUCK_UV_MIN;
78 pr_err("Value: %#x is wrong for BUCK%d", hex, buck);
82 static int s2mps11_buck_volt2hex(int buck, int uV)
90 hex = (uV - S2MPS11_BUCK_UV_HMIN) / S2MPS11_BUCK_HSTEP;
91 if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
96 hex = (uV - S2MPS11_BUCK9_UV_MIN) / S2MPS11_BUCK9_STEP;
97 if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
101 hex = (uV - S2MPS11_BUCK_UV_MIN) / S2MPS11_BUCK_LSTEP;
102 if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
104 else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
113 pr_err("Value: %d uV is wrong for BUCK%d", uV, buck);
117 static int s2mps11_buck_val(struct udevice *dev, int op, int *uV)
123 buck = dev->driver_data;
124 if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
125 pr_err("Wrong buck number: %d\n", buck);
129 if (op == PMIC_OP_GET)
132 addr = s2mps11_buck_out[buck];
136 mask = S2MPS11_BUCK9_VOLT_MASK;
139 mask = S2MPS11_BUCK_VOLT_MASK;
143 ret = pmic_read(dev->parent, addr, &val, 1);
147 if (op == PMIC_OP_GET) {
149 ret = s2mps11_buck_hex2volt(buck, val);
156 hex = s2mps11_buck_volt2hex(buck, *uV);
162 ret = pmic_write(dev->parent, addr, &val, 1);
167 static int s2mps11_buck_mode(struct udevice *dev, int op, int *opmode)
169 unsigned int addr, mode;
173 buck = dev->driver_data;
174 if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
175 pr_err("Wrong buck number: %d\n", buck);
179 addr = s2mps11_buck_ctrl[buck];
181 ret = pmic_read(dev->parent, addr, &val, 1);
185 if (op == PMIC_OP_GET) {
186 val &= (S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
188 case S2MPS11_BUCK_MODE_OFF:
191 case S2MPS11_BUCK_MODE_STANDBY:
192 *opmode = OP_STANDBY;
194 case S2MPS11_BUCK_MODE_ON:
205 mode = S2MPS11_BUCK_MODE_OFF;
208 mode = S2MPS11_BUCK_MODE_STANDBY;
211 mode = S2MPS11_BUCK_MODE_ON;
214 pr_err("Wrong mode: %d for buck: %d\n", *opmode, buck);
218 val &= ~(S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
220 ret = pmic_write(dev->parent, addr, &val, 1);
225 static int s2mps11_buck_enable(struct udevice *dev, int op, bool *enable)
229 if (op == PMIC_OP_GET) {
230 ret = s2mps11_buck_mode(dev, op, &on_off);
243 } else if (op == PMIC_OP_SET) {
249 ret = s2mps11_buck_mode(dev, op, &on_off);
257 static int buck_get_value(struct udevice *dev)
262 ret = s2mps11_buck_val(dev, PMIC_OP_GET, &uV);
268 static int buck_set_value(struct udevice *dev, int uV)
270 return s2mps11_buck_val(dev, PMIC_OP_SET, &uV);
273 static int buck_get_enable(struct udevice *dev)
278 ret = s2mps11_buck_enable(dev, PMIC_OP_GET, &enable);
284 static int buck_set_enable(struct udevice *dev, bool enable)
286 return s2mps11_buck_enable(dev, PMIC_OP_SET, &enable);
289 static int buck_get_mode(struct udevice *dev)
294 ret = s2mps11_buck_mode(dev, PMIC_OP_GET, &mode);
301 static int buck_set_mode(struct udevice *dev, int mode)
303 return s2mps11_buck_mode(dev, PMIC_OP_SET, &mode);
306 static int s2mps11_buck_probe(struct udevice *dev)
308 struct dm_regulator_uclass_platdata *uc_pdata;
310 uc_pdata = dev_get_uclass_platdata(dev);
312 uc_pdata->type = REGULATOR_TYPE_BUCK;
313 uc_pdata->mode = s2mps11_buck_modes;
314 uc_pdata->mode_count = ARRAY_SIZE(s2mps11_buck_modes);
319 static const struct dm_regulator_ops s2mps11_buck_ops = {
320 .get_value = buck_get_value,
321 .set_value = buck_set_value,
322 .get_enable = buck_get_enable,
323 .set_enable = buck_set_enable,
324 .get_mode = buck_get_mode,
325 .set_mode = buck_set_mode,
328 U_BOOT_DRIVER(s2mps11_buck) = {
329 .name = S2MPS11_BUCK_DRIVER,
330 .id = UCLASS_REGULATOR,
331 .ops = &s2mps11_buck_ops,
332 .probe = s2mps11_buck_probe,
335 static int s2mps11_ldo_hex2volt(int ldo, int hex)
339 if (hex > S2MPS11_LDO_VOLT_MAX_HEX) {
340 pr_err("Value: %#x is wrong for LDO%d", hex, ldo);
352 uV = hex * S2MPS11_LDO_STEP + S2MPS11_LDO_UV_MIN;
355 uV = hex * S2MPS11_LDO_STEP * 2 + S2MPS11_LDO_UV_MIN;
362 static int s2mps11_ldo_volt2hex(int ldo, int uV)
374 hex = (uV - S2MPS11_LDO_UV_MIN) / S2MPS11_LDO_STEP;
377 hex = (uV - S2MPS11_LDO_UV_MIN) / (S2MPS11_LDO_STEP * 2);
381 if (hex >= 0 && hex <= S2MPS11_LDO_VOLT_MAX_HEX)
384 pr_err("Value: %d uV is wrong for LDO%d", uV, ldo);
390 static int s2mps11_ldo_val(struct udevice *dev, int op, int *uV)
396 ldo = dev->driver_data;
397 if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
398 pr_err("Wrong ldo number: %d\n", ldo);
402 addr = S2MPS11_REG_L1CTRL + ldo - 1;
404 ret = pmic_read(dev->parent, addr, &val, 1);
408 if (op == PMIC_OP_GET) {
410 val &= S2MPS11_LDO_VOLT_MASK;
411 ret = s2mps11_ldo_hex2volt(ldo, val);
419 hex = s2mps11_ldo_volt2hex(ldo, *uV);
423 val &= ~S2MPS11_LDO_VOLT_MASK;
425 ret = pmic_write(dev->parent, addr, &val, 1);
430 static int s2mps11_ldo_mode(struct udevice *dev, int op, int *opmode)
432 unsigned int addr, mode;
436 ldo = dev->driver_data;
437 if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
438 pr_err("Wrong ldo number: %d\n", ldo);
441 addr = S2MPS11_REG_L1CTRL + ldo - 1;
443 ret = pmic_read(dev->parent, addr, &val, 1);
447 if (op == PMIC_OP_GET) {
448 val &= (S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
450 case S2MPS11_LDO_MODE_OFF:
453 case S2MPS11_LDO_MODE_STANDBY:
454 *opmode = OP_STANDBY;
456 case S2MPS11_LDO_MODE_STANDBY_LPM:
457 *opmode = OP_STANDBY_LPM;
459 case S2MPS11_LDO_MODE_ON:
470 mode = S2MPS11_LDO_MODE_OFF;
473 mode = S2MPS11_LDO_MODE_STANDBY;
476 mode = S2MPS11_LDO_MODE_STANDBY_LPM;
479 mode = S2MPS11_LDO_MODE_ON;
482 pr_err("Wrong mode: %d for ldo: %d\n", *opmode, ldo);
486 val &= ~(S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
488 ret = pmic_write(dev->parent, addr, &val, 1);
493 static int s2mps11_ldo_enable(struct udevice *dev, int op, bool *enable)
497 if (op == PMIC_OP_GET) {
498 ret = s2mps11_ldo_mode(dev, op, &on_off);
511 } else if (op == PMIC_OP_SET) {
517 ret = s2mps11_ldo_mode(dev, op, &on_off);
525 static int ldo_get_value(struct udevice *dev)
530 ret = s2mps11_ldo_val(dev, PMIC_OP_GET, &uV);
537 static int ldo_set_value(struct udevice *dev, int uV)
539 return s2mps11_ldo_val(dev, PMIC_OP_SET, &uV);
542 static int ldo_get_enable(struct udevice *dev)
547 ret = s2mps11_ldo_enable(dev, PMIC_OP_GET, &enable);
553 static int ldo_set_enable(struct udevice *dev, bool enable)
557 ret = s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable);
561 /* Wait the "enable delay" for voltage to start to rise */
567 static int ldo_get_mode(struct udevice *dev)
571 ret = s2mps11_ldo_mode(dev, PMIC_OP_GET, &mode);
577 static int ldo_set_mode(struct udevice *dev, int mode)
579 return s2mps11_ldo_mode(dev, PMIC_OP_SET, &mode);
582 static int s2mps11_ldo_probe(struct udevice *dev)
584 struct dm_regulator_uclass_platdata *uc_pdata;
586 uc_pdata = dev_get_uclass_platdata(dev);
587 uc_pdata->type = REGULATOR_TYPE_LDO;
588 uc_pdata->mode = s2mps11_ldo_modes;
589 uc_pdata->mode_count = ARRAY_SIZE(s2mps11_ldo_modes);
594 static const struct dm_regulator_ops s2mps11_ldo_ops = {
595 .get_value = ldo_get_value,
596 .set_value = ldo_set_value,
597 .get_enable = ldo_get_enable,
598 .set_enable = ldo_set_enable,
599 .get_mode = ldo_get_mode,
600 .set_mode = ldo_set_mode,
603 U_BOOT_DRIVER(s2mps11_ldo) = {
604 .name = S2MPS11_LDO_DRIVER,
605 .id = UCLASS_REGULATOR,
606 .ops = &s2mps11_ldo_ops,
607 .probe = s2mps11_ldo_probe,