1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018 Samsung Electronics
4 * Jaehoon Chung <jh80.chung@samsung.com>
12 #include <power/pmic.h>
13 #include <power/regulator.h>
14 #include <power/s2mps11.h>
16 #define MODE(_id, _val, _name) { \
18 .register_value = _val, \
22 /* BUCK : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 */
23 static struct dm_regulator_mode s2mps11_buck_modes[] = {
24 MODE(OP_OFF, S2MPS11_BUCK_MODE_OFF, "OFF"),
25 MODE(OP_STANDBY, S2MPS11_BUCK_MODE_STANDBY, "ON/OFF"),
26 MODE(OP_ON, S2MPS11_BUCK_MODE_STANDBY, "ON"),
29 static struct dm_regulator_mode s2mps11_ldo_modes[] = {
30 MODE(OP_OFF, S2MPS11_LDO_MODE_OFF, "OFF"),
31 MODE(OP_STANDBY, S2MPS11_LDO_MODE_STANDBY, "ON/OFF"),
32 MODE(OP_STANDBY_LPM, S2MPS11_LDO_MODE_STANDBY_LPM, "ON/LPM"),
33 MODE(OP_ON, S2MPS11_LDO_MODE_ON, "ON"),
36 static const char s2mps11_buck_ctrl[] = {
37 0xff, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x33, 0x35, 0x37, 0x39, 0x3b
40 static const char s2mps11_buck_out[] = {
41 0xff, 0x26, 0x28, 0x2a, 0x2c, 0x2f, 0x34, 0x36, 0x38, 0x3a, 0x3c
44 static int s2mps11_buck_hex2volt(int buck, int hex)
55 if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
58 uV = hex * S2MPS11_BUCK_HSTEP + S2MPS11_BUCK_UV_HMIN;
61 if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
63 uV = hex * S2MPS11_BUCK9_STEP * 2 + S2MPS11_BUCK9_UV_MIN;
66 if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
68 else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
71 uV = hex * S2MPS11_BUCK_LSTEP + S2MPS11_BUCK_UV_MIN;
77 pr_err("Value: %#x is wrong for BUCK%d", hex, buck);
81 static int s2mps11_buck_volt2hex(int buck, int uV)
89 hex = (uV - S2MPS11_BUCK_UV_HMIN) / S2MPS11_BUCK_HSTEP;
90 if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX)
95 hex = (uV - S2MPS11_BUCK9_UV_MIN) / S2MPS11_BUCK9_STEP;
96 if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX)
100 hex = (uV - S2MPS11_BUCK_UV_MIN) / S2MPS11_BUCK_LSTEP;
101 if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX)
103 else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX)
112 pr_err("Value: %d uV is wrong for BUCK%d", uV, buck);
116 static int s2mps11_buck_val(struct udevice *dev, int op, int *uV)
122 buck = dev->driver_data;
123 if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
124 pr_err("Wrong buck number: %d\n", buck);
128 if (op == PMIC_OP_GET)
131 addr = s2mps11_buck_out[buck];
135 mask = S2MPS11_BUCK9_VOLT_MASK;
138 mask = S2MPS11_BUCK_VOLT_MASK;
142 ret = pmic_read(dev->parent, addr, &val, 1);
146 if (op == PMIC_OP_GET) {
148 ret = s2mps11_buck_hex2volt(buck, val);
155 hex = s2mps11_buck_volt2hex(buck, *uV);
161 ret = pmic_write(dev->parent, addr, &val, 1);
166 static int s2mps11_buck_mode(struct udevice *dev, int op, int *opmode)
168 unsigned int addr, mode;
172 buck = dev->driver_data;
173 if (buck < 1 || buck > S2MPS11_BUCK_NUM) {
174 pr_err("Wrong buck number: %d\n", buck);
178 addr = s2mps11_buck_ctrl[buck];
180 ret = pmic_read(dev->parent, addr, &val, 1);
184 if (op == PMIC_OP_GET) {
185 val &= (S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
187 case S2MPS11_BUCK_MODE_OFF:
190 case S2MPS11_BUCK_MODE_STANDBY:
191 *opmode = OP_STANDBY;
193 case S2MPS11_BUCK_MODE_ON:
204 mode = S2MPS11_BUCK_MODE_OFF;
207 mode = S2MPS11_BUCK_MODE_STANDBY;
210 mode = S2MPS11_BUCK_MODE_ON;
213 pr_err("Wrong mode: %d for buck: %d\n", *opmode, buck);
217 val &= ~(S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT);
219 ret = pmic_write(dev->parent, addr, &val, 1);
224 static int s2mps11_buck_enable(struct udevice *dev, int op, bool *enable)
228 if (op == PMIC_OP_GET) {
229 ret = s2mps11_buck_mode(dev, op, &on_off);
242 } else if (op == PMIC_OP_SET) {
248 ret = s2mps11_buck_mode(dev, op, &on_off);
256 static int buck_get_value(struct udevice *dev)
261 ret = s2mps11_buck_val(dev, PMIC_OP_GET, &uV);
267 static int buck_set_value(struct udevice *dev, int uV)
269 return s2mps11_buck_val(dev, PMIC_OP_SET, &uV);
272 static int buck_get_enable(struct udevice *dev)
277 ret = s2mps11_buck_enable(dev, PMIC_OP_GET, &enable);
283 static int buck_set_enable(struct udevice *dev, bool enable)
285 return s2mps11_buck_enable(dev, PMIC_OP_SET, &enable);
288 static int buck_get_mode(struct udevice *dev)
293 ret = s2mps11_buck_mode(dev, PMIC_OP_GET, &mode);
300 static int buck_set_mode(struct udevice *dev, int mode)
302 return s2mps11_buck_mode(dev, PMIC_OP_SET, &mode);
305 static int s2mps11_buck_probe(struct udevice *dev)
307 struct dm_regulator_uclass_platdata *uc_pdata;
309 uc_pdata = dev_get_uclass_platdata(dev);
311 uc_pdata->type = REGULATOR_TYPE_BUCK;
312 uc_pdata->mode = s2mps11_buck_modes;
313 uc_pdata->mode_count = ARRAY_SIZE(s2mps11_buck_modes);
318 static const struct dm_regulator_ops s2mps11_buck_ops = {
319 .get_value = buck_get_value,
320 .set_value = buck_set_value,
321 .get_enable = buck_get_enable,
322 .set_enable = buck_set_enable,
323 .get_mode = buck_get_mode,
324 .set_mode = buck_set_mode,
327 U_BOOT_DRIVER(s2mps11_buck) = {
328 .name = S2MPS11_BUCK_DRIVER,
329 .id = UCLASS_REGULATOR,
330 .ops = &s2mps11_buck_ops,
331 .probe = s2mps11_buck_probe,
334 static int s2mps11_ldo_hex2volt(int ldo, int hex)
338 if (hex > S2MPS11_LDO_VOLT_MAX_HEX) {
339 pr_err("Value: %#x is wrong for LDO%d", hex, ldo);
351 uV = hex * S2MPS11_LDO_STEP + S2MPS11_LDO_UV_MIN;
354 uV = hex * S2MPS11_LDO_STEP * 2 + S2MPS11_LDO_UV_MIN;
361 static int s2mps11_ldo_volt2hex(int ldo, int uV)
373 hex = (uV - S2MPS11_LDO_UV_MIN) / S2MPS11_LDO_STEP;
376 hex = (uV - S2MPS11_LDO_UV_MIN) / (S2MPS11_LDO_STEP * 2);
380 if (hex >= 0 && hex <= S2MPS11_LDO_VOLT_MAX_HEX)
383 pr_err("Value: %d uV is wrong for LDO%d", uV, ldo);
389 static int s2mps11_ldo_val(struct udevice *dev, int op, int *uV)
395 ldo = dev->driver_data;
396 if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
397 pr_err("Wrong ldo number: %d\n", ldo);
401 addr = S2MPS11_REG_L1CTRL + ldo - 1;
403 ret = pmic_read(dev->parent, addr, &val, 1);
407 if (op == PMIC_OP_GET) {
409 val &= S2MPS11_LDO_VOLT_MASK;
410 ret = s2mps11_ldo_hex2volt(ldo, val);
418 hex = s2mps11_ldo_volt2hex(ldo, *uV);
422 val &= ~S2MPS11_LDO_VOLT_MASK;
424 ret = pmic_write(dev->parent, addr, &val, 1);
429 static int s2mps11_ldo_mode(struct udevice *dev, int op, int *opmode)
431 unsigned int addr, mode;
435 ldo = dev->driver_data;
436 if (ldo < 1 || ldo > S2MPS11_LDO_NUM) {
437 pr_err("Wrong ldo number: %d\n", ldo);
440 addr = S2MPS11_REG_L1CTRL + ldo - 1;
442 ret = pmic_read(dev->parent, addr, &val, 1);
446 if (op == PMIC_OP_GET) {
447 val &= (S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
449 case S2MPS11_LDO_MODE_OFF:
452 case S2MPS11_LDO_MODE_STANDBY:
453 *opmode = OP_STANDBY;
455 case S2MPS11_LDO_MODE_STANDBY_LPM:
456 *opmode = OP_STANDBY_LPM;
458 case S2MPS11_LDO_MODE_ON:
469 mode = S2MPS11_LDO_MODE_OFF;
472 mode = S2MPS11_LDO_MODE_STANDBY;
475 mode = S2MPS11_LDO_MODE_STANDBY_LPM;
478 mode = S2MPS11_LDO_MODE_ON;
481 pr_err("Wrong mode: %d for ldo: %d\n", *opmode, ldo);
485 val &= ~(S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT);
487 ret = pmic_write(dev->parent, addr, &val, 1);
492 static int s2mps11_ldo_enable(struct udevice *dev, int op, bool *enable)
496 if (op == PMIC_OP_GET) {
497 ret = s2mps11_ldo_mode(dev, op, &on_off);
510 } else if (op == PMIC_OP_SET) {
516 ret = s2mps11_ldo_mode(dev, op, &on_off);
524 static int ldo_get_value(struct udevice *dev)
529 ret = s2mps11_ldo_val(dev, PMIC_OP_GET, &uV);
536 static int ldo_set_value(struct udevice *dev, int uV)
538 return s2mps11_ldo_val(dev, PMIC_OP_SET, &uV);
541 static int ldo_get_enable(struct udevice *dev)
546 ret = s2mps11_ldo_enable(dev, PMIC_OP_GET, &enable);
552 static int ldo_set_enable(struct udevice *dev, bool enable)
556 ret = s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable);
560 /* Wait the "enable delay" for voltage to start to rise */
566 static int ldo_get_mode(struct udevice *dev)
570 ret = s2mps11_ldo_mode(dev, PMIC_OP_GET, &mode);
576 static int ldo_set_mode(struct udevice *dev, int mode)
578 return s2mps11_ldo_mode(dev, PMIC_OP_SET, &mode);
581 static int s2mps11_ldo_probe(struct udevice *dev)
583 struct dm_regulator_uclass_platdata *uc_pdata;
585 uc_pdata = dev_get_uclass_platdata(dev);
586 uc_pdata->type = REGULATOR_TYPE_LDO;
587 uc_pdata->mode = s2mps11_ldo_modes;
588 uc_pdata->mode_count = ARRAY_SIZE(s2mps11_ldo_modes);
593 static const struct dm_regulator_ops s2mps11_ldo_ops = {
594 .get_value = ldo_get_value,
595 .set_value = ldo_set_value,
596 .get_enable = ldo_get_enable,
597 .set_enable = ldo_set_enable,
598 .get_mode = ldo_get_mode,
599 .set_mode = ldo_set_mode,
602 U_BOOT_DRIVER(s2mps11_ldo) = {
603 .name = S2MPS11_LDO_DRIVER,
604 .id = UCLASS_REGULATOR,
605 .ops = &s2mps11_ldo_ops,
606 .probe = s2mps11_ldo_probe,