1 // SPDX-License-Identifier: GPL-2.0+
4 * Texas Instruments Incorporated, <www.ti.com>
6 * Keerthy <j-keerthy@ti.com>
14 #include <power/pmic.h>
15 #include <power/regulator.h>
16 #include <power/palmas.h>
18 #define REGULATOR_ON 0x1
19 #define REGULATOR_OFF 0x0
21 #define SMPS_MODE_MASK 0x3
22 #define SMPS_MODE_SHIFT 0x0
23 #define LDO_MODE_MASK 0x1
24 #define LDO_MODE_SHIFT 0x0
26 static const char palmas_smps_ctrl[][PALMAS_SMPS_NUM] = {
27 {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c},
28 {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38},
29 {0x20, 0x24, 0x2c, 0x30, 0x38},
32 static const char palmas_smps_volt[][PALMAS_SMPS_NUM] = {
33 {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b, 0x3c},
34 {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b},
35 {0x23, 0x27, 0x2f, 0x33, 0x3B}
38 static const char palmas_ldo_ctrl[][PALMAS_LDO_NUM] = {
39 {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
40 {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64},
41 {0x50, 0x52, 0x54, 0x5e, 0x62}
44 static const char palmas_ldo_volt[][PALMAS_LDO_NUM] = {
45 {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
46 {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65},
47 {0x51, 0x53, 0x55, 0x5f, 0x63}
50 static int palmas_smps_enable(struct udevice *dev, int op, bool *enable)
54 struct dm_regulator_uclass_platdata *uc_pdata;
56 uc_pdata = dev_get_uclass_platdata(dev);
57 adr = uc_pdata->ctrl_reg;
59 ret = pmic_reg_read(dev->parent, adr);
63 if (op == PMIC_OP_GET) {
64 ret &= PALMAS_SMPS_STATUS_MASK;
72 } else if (op == PMIC_OP_SET) {
74 ret |= PALMAS_SMPS_MODE_MASK;
76 ret &= ~(PALMAS_SMPS_MODE_MASK);
78 ret = pmic_reg_write(dev->parent, adr, ret);
86 static int palmas_smps_volt2hex(int uV)
88 if (uV > PALMAS_LDO_VOLT_MAX)
92 return (uV - 1000000) / 20000 + 0x6;
97 return 0x6 + ((uV - 500000) / 10000);
100 static int palmas_smps_hex2volt(int hex, bool range)
104 if (hex > PALMAS_SMPS_VOLT_MAX_HEX)
110 uV = 500000 + (hex - 0x6) * 10000;
118 static int palmas_smps_val(struct udevice *dev, int op, int *uV)
120 unsigned int hex, adr;
123 struct dm_regulator_uclass_platdata *uc_pdata;
125 uc_pdata = dev_get_uclass_platdata(dev);
127 if (op == PMIC_OP_GET)
130 adr = uc_pdata->volt_reg;
132 ret = pmic_reg_read(dev->parent, adr);
136 if (op == PMIC_OP_GET) {
137 if (ret & PALMAS_SMPS_RANGE_MASK)
142 ret &= PALMAS_SMPS_VOLT_MASK;
143 ret = palmas_smps_hex2volt(ret, range);
151 hex = palmas_smps_volt2hex(*uV);
155 ret &= ~PALMAS_SMPS_VOLT_MASK;
158 ret |= PALMAS_SMPS_RANGE_MASK;
160 return pmic_reg_write(dev->parent, adr, ret);
163 static int palmas_ldo_bypass_enable(struct udevice *dev, bool enabled)
165 int type = dev_get_driver_data(dev_get_parent(dev));
166 struct dm_regulator_uclass_platdata *p;
170 if (type == TPS65917) {
171 /* bypass available only on LDO1 and LDO2 */
172 if (dev->driver_data > 2)
174 } else if (type == TPS659038) {
175 /* bypass available only on LDO9 */
176 if (dev->driver_data != 9)
180 p = dev_get_uclass_platdata(dev);
183 reg = pmic_reg_read(dev->parent, adr);
188 reg |= PALMAS_LDO_BYPASS_EN;
190 reg &= ~PALMAS_LDO_BYPASS_EN;
192 return pmic_reg_write(dev->parent, adr, reg);
195 static int palmas_ldo_enable(struct udevice *dev, int op, bool *enable)
199 struct dm_regulator_uclass_platdata *uc_pdata;
201 uc_pdata = dev_get_uclass_platdata(dev);
202 adr = uc_pdata->ctrl_reg;
204 ret = pmic_reg_read(dev->parent, adr);
208 if (op == PMIC_OP_GET) {
209 ret &= PALMAS_LDO_STATUS_MASK;
217 } else if (op == PMIC_OP_SET) {
219 ret |= PALMAS_LDO_MODE_MASK;
221 ret &= ~(PALMAS_LDO_MODE_MASK);
223 ret = pmic_reg_write(dev->parent, adr, ret);
227 ret = palmas_ldo_bypass_enable(dev, false);
228 if (ret && (ret != -ENOTSUPP))
235 static int palmas_ldo_volt2hex(int uV)
237 if (uV > PALMAS_LDO_VOLT_MAX)
240 return (uV - 850000) / 50000;
243 static int palmas_ldo_hex2volt(int hex)
245 if (hex > PALMAS_LDO_VOLT_MAX_HEX)
251 return (hex * 50000) + 850000;
254 static int palmas_ldo_val(struct udevice *dev, int op, int *uV)
256 unsigned int hex, adr;
259 struct dm_regulator_uclass_platdata *uc_pdata;
261 if (op == PMIC_OP_GET)
264 uc_pdata = dev_get_uclass_platdata(dev);
266 adr = uc_pdata->volt_reg;
268 ret = pmic_reg_read(dev->parent, adr);
272 if (op == PMIC_OP_GET) {
273 ret &= PALMAS_LDO_VOLT_MASK;
274 ret = palmas_ldo_hex2volt(ret);
281 hex = palmas_ldo_volt2hex(*uV);
285 ret &= ~PALMAS_LDO_VOLT_MASK;
290 return pmic_reg_write(dev->parent, adr, ret);
293 static int palmas_ldo_probe(struct udevice *dev)
295 struct dm_regulator_uclass_platdata *uc_pdata;
296 struct udevice *parent;
298 uc_pdata = dev_get_uclass_platdata(dev);
300 parent = dev_get_parent(dev);
301 int type = dev_get_driver_data(parent);
303 uc_pdata->type = REGULATOR_TYPE_LDO;
305 if (dev->driver_data) {
306 u8 idx = dev->driver_data - 1;
307 uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx];
308 uc_pdata->volt_reg = palmas_ldo_volt[type][idx];
310 /* check for ldoln and ldousb cases */
311 if (!strcmp("ldoln", dev->name)) {
312 uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9];
313 uc_pdata->volt_reg = palmas_ldo_volt[type][9];
314 } else if (!strcmp("ldousb", dev->name)) {
315 uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10];
316 uc_pdata->volt_reg = palmas_ldo_volt[type][10];
323 static int ldo_get_value(struct udevice *dev)
328 ret = palmas_ldo_val(dev, PMIC_OP_GET, &uV);
335 static int ldo_set_value(struct udevice *dev, int uV)
337 return palmas_ldo_val(dev, PMIC_OP_SET, &uV);
340 static int ldo_get_enable(struct udevice *dev)
345 ret = palmas_ldo_enable(dev, PMIC_OP_GET, &enable);
352 static int ldo_set_enable(struct udevice *dev, bool enable)
354 return palmas_ldo_enable(dev, PMIC_OP_SET, &enable);
357 static int palmas_smps_probe(struct udevice *dev)
359 struct dm_regulator_uclass_platdata *uc_pdata;
360 struct udevice *parent;
363 uc_pdata = dev_get_uclass_platdata(dev);
365 parent = dev_get_parent(dev);
366 int type = dev_get_driver_data(parent);
368 uc_pdata->type = REGULATOR_TYPE_BUCK;
373 switch (dev->driver_data) {
376 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][0];
377 uc_pdata->volt_reg = palmas_smps_volt[type][0];
380 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][1];
381 uc_pdata->volt_reg = palmas_smps_volt[type][1];
384 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][2];
385 uc_pdata->volt_reg = palmas_smps_volt[type][2];
392 idx = dev->driver_data - 3;
393 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
394 uc_pdata->volt_reg = palmas_smps_volt[type][idx];
398 printf("Wrong ID for regulator\n");
403 switch (dev->driver_data) {
409 idx = dev->driver_data - 1;
410 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
411 uc_pdata->volt_reg = palmas_smps_volt[type][idx];
415 uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx];
416 uc_pdata->volt_reg = palmas_smps_volt[type][idx];
419 printf("Wrong ID for regulator\n");
424 printf("Invalid PMIC ID\n");
430 static int smps_get_value(struct udevice *dev)
435 ret = palmas_smps_val(dev, PMIC_OP_GET, &uV);
442 static int smps_set_value(struct udevice *dev, int uV)
444 return palmas_smps_val(dev, PMIC_OP_SET, &uV);
447 static int smps_get_enable(struct udevice *dev)
452 ret = palmas_smps_enable(dev, PMIC_OP_GET, &enable);
459 static int smps_set_enable(struct udevice *dev, bool enable)
461 return palmas_smps_enable(dev, PMIC_OP_SET, &enable);
464 static const struct dm_regulator_ops palmas_ldo_ops = {
465 .get_value = ldo_get_value,
466 .set_value = ldo_set_value,
467 .get_enable = ldo_get_enable,
468 .set_enable = ldo_set_enable,
471 U_BOOT_DRIVER(palmas_ldo) = {
472 .name = PALMAS_LDO_DRIVER,
473 .id = UCLASS_REGULATOR,
474 .ops = &palmas_ldo_ops,
475 .probe = palmas_ldo_probe,
478 static const struct dm_regulator_ops palmas_smps_ops = {
479 .get_value = smps_get_value,
480 .set_value = smps_set_value,
481 .get_enable = smps_get_enable,
482 .set_enable = smps_set_enable,
485 U_BOOT_DRIVER(palmas_smps) = {
486 .name = PALMAS_SMPS_DRIVER,
487 .id = UCLASS_REGULATOR,
488 .ops = &palmas_smps_ops,
489 .probe = palmas_smps_probe,