2 * Copyright (C) 2015 Samsung Electronics
3 * Przemyslaw Marczak <p.marczak@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <power/pmic.h>
14 #include <power/regulator.h>
15 #include <power/sandbox_pmic.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 #define MODE(_id, _val, _name) [_id] = { \
21 .register_value = _val, \
25 #define RANGE(_min, _max, _step) { \
32 * struct output_range - helper structure type to define the range of output
33 * operating values (current/voltage), limited by the PMIC IC design.
35 * @min - minimum value
36 * @max - maximum value
45 /* BUCK: 1,2 - voltage range */
46 static struct output_range buck_voltage_range[] = {
47 RANGE(OUT_BUCK1_UV_MIN, OUT_BUCK1_UV_MAX, OUT_BUCK1_UV_STEP),
48 RANGE(OUT_BUCK2_UV_MIN, OUT_BUCK2_UV_MAX, OUT_BUCK2_UV_STEP),
51 /* BUCK: 1 - current range */
52 static struct output_range buck_current_range[] = {
53 RANGE(OUT_BUCK1_UA_MIN, OUT_BUCK1_UA_MAX, OUT_BUCK1_UA_STEP),
56 /* BUCK operating modes */
57 static struct dm_regulator_mode sandbox_buck_modes[] = {
58 MODE(BUCK_OM_OFF, OM2REG(BUCK_OM_OFF), "OFF"),
59 MODE(BUCK_OM_ON, OM2REG(BUCK_OM_ON), "ON"),
60 MODE(BUCK_OM_PWM, OM2REG(BUCK_OM_PWM), "PWM"),
63 /* LDO: 1,2 - voltage range */
64 static struct output_range ldo_voltage_range[] = {
65 RANGE(OUT_LDO1_UV_MIN, OUT_LDO1_UV_MAX, OUT_LDO1_UV_STEP),
66 RANGE(OUT_LDO2_UV_MIN, OUT_LDO2_UV_MAX, OUT_LDO2_UV_STEP),
69 /* LDO: 1 - current range */
70 static struct output_range ldo_current_range[] = {
71 RANGE(OUT_LDO1_UA_MIN, OUT_LDO1_UA_MAX, OUT_LDO1_UA_STEP),
74 /* LDO operating modes */
75 static struct dm_regulator_mode sandbox_ldo_modes[] = {
76 MODE(LDO_OM_OFF, OM2REG(LDO_OM_OFF), "OFF"),
77 MODE(LDO_OM_ON, OM2REG(LDO_OM_ON), "ON"),
78 MODE(LDO_OM_SLEEP, OM2REG(LDO_OM_SLEEP), "SLEEP"),
79 MODE(LDO_OM_STANDBY, OM2REG(LDO_OM_STANDBY), "STANDBY"),
82 int out_get_value(struct udevice *dev, int output_count, int reg_type,
83 struct output_range *range)
89 if (dev->driver_data > output_count) {
90 pr_err("Unknown regulator number: %lu for PMIC %s!",
91 dev->driver_data, dev->name);
95 reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
96 ret = pmic_read(dev->parent, reg, ®_val, 1);
98 pr_err("PMIC read failed: %d\n", ret);
102 ret = REG2VAL(range[dev->driver_data - 1].min,
103 range[dev->driver_data - 1].step,
109 static int out_set_value(struct udevice *dev, int output_count, int reg_type,
110 struct output_range *range, int value)
117 if (dev->driver_data > output_count) {
118 pr_err("Unknown regulator number: %lu for PMIC %s!",
119 dev->driver_data, dev->name);
123 max_value = range[dev->driver_data - 1].max;
124 if (value > max_value) {
125 pr_err("Wrong value for %s: %lu. Max is: %d.",
126 dev->name, dev->driver_data, max_value);
130 reg_val = VAL2REG(range[dev->driver_data - 1].min,
131 range[dev->driver_data - 1].step,
134 reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
135 ret = pmic_write(dev->parent, reg, ®_val, 1);
137 pr_err("PMIC write failed: %d\n", ret);
144 static int out_get_mode(struct udevice *dev)
146 struct dm_regulator_uclass_platdata *uc_pdata;
152 uc_pdata = dev_get_uclass_platdata(dev);
154 reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
155 ret = pmic_read(dev->parent, reg, ®_val, 1);
157 pr_err("PMIC read failed: %d\n", ret);
161 for (i = 0; i < uc_pdata->mode_count; i++) {
162 if (reg_val == uc_pdata->mode[i].register_value)
163 return uc_pdata->mode[i].id;
166 pr_err("Unknown operation mode for %s!", dev->name);
170 static int out_set_mode(struct udevice *dev, int mode)
172 struct dm_regulator_uclass_platdata *uc_pdata;
178 uc_pdata = dev_get_uclass_platdata(dev);
180 if (mode >= uc_pdata->mode_count)
183 for (i = 0; i < uc_pdata->mode_count; i++) {
184 if (mode == uc_pdata->mode[i].id) {
185 reg_val = uc_pdata->mode[i].register_value;
191 pr_err("Unknown operation mode for %s!", dev->name);
195 reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
196 ret = pmic_write(dev->parent, reg, (uint8_t *)®_val, 1);
198 pr_err("PMIC write failed: %d\n", ret);
205 static int buck_get_voltage(struct udevice *dev)
207 return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
211 static int buck_set_voltage(struct udevice *dev, int uV)
213 return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
214 buck_voltage_range, uV);
217 static int buck_get_current(struct udevice *dev)
219 /* BUCK2 - unsupported */
220 if (dev->driver_data == 2)
223 return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
227 static int buck_set_current(struct udevice *dev, int uA)
229 /* BUCK2 - unsupported */
230 if (dev->driver_data == 2)
233 return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
234 buck_current_range, uA);
237 static int buck_get_enable(struct udevice *dev)
239 if (out_get_mode(dev) == BUCK_OM_OFF)
245 static int buck_set_enable(struct udevice *dev, bool enable)
247 return out_set_mode(dev, enable ? BUCK_OM_ON : BUCK_OM_OFF);
250 static int sandbox_buck_probe(struct udevice *dev)
252 struct dm_regulator_uclass_platdata *uc_pdata;
254 uc_pdata = dev_get_uclass_platdata(dev);
256 uc_pdata->type = REGULATOR_TYPE_BUCK;
257 uc_pdata->mode = sandbox_buck_modes;
258 uc_pdata->mode_count = ARRAY_SIZE(sandbox_buck_modes);
263 static const struct dm_regulator_ops sandbox_buck_ops = {
264 .get_value = buck_get_voltage,
265 .set_value = buck_set_voltage,
266 .get_current = buck_get_current,
267 .set_current = buck_set_current,
268 .get_enable = buck_get_enable,
269 .set_enable = buck_set_enable,
270 .get_mode = out_get_mode,
271 .set_mode = out_set_mode,
274 U_BOOT_DRIVER(sandbox_buck) = {
275 .name = SANDBOX_BUCK_DRIVER,
276 .id = UCLASS_REGULATOR,
277 .ops = &sandbox_buck_ops,
278 .probe = sandbox_buck_probe,
281 static int ldo_get_voltage(struct udevice *dev)
283 return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
287 static int ldo_set_voltage(struct udevice *dev, int uV)
289 return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
290 ldo_voltage_range, uV);
293 static int ldo_get_current(struct udevice *dev)
295 /* LDO2 - unsupported */
296 if (dev->driver_data == 2)
299 return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
303 static int ldo_set_current(struct udevice *dev, int uA)
305 /* LDO2 - unsupported */
306 if (dev->driver_data == 2)
309 return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
310 ldo_current_range, uA);
313 static int ldo_get_enable(struct udevice *dev)
315 if (out_get_mode(dev) == LDO_OM_OFF)
321 static int ldo_set_enable(struct udevice *dev, bool enable)
323 return out_set_mode(dev, enable ? LDO_OM_ON : LDO_OM_OFF);
326 static int sandbox_ldo_probe(struct udevice *dev)
328 struct dm_regulator_uclass_platdata *uc_pdata;
330 uc_pdata = dev_get_uclass_platdata(dev);
332 uc_pdata->type = REGULATOR_TYPE_LDO;
333 uc_pdata->mode = sandbox_ldo_modes;
334 uc_pdata->mode_count = ARRAY_SIZE(sandbox_ldo_modes);
339 static const struct dm_regulator_ops sandbox_ldo_ops = {
340 .get_value = ldo_get_voltage,
341 .set_value = ldo_set_voltage,
342 .get_current = ldo_get_current,
343 .set_current = ldo_set_current,
344 .get_enable = ldo_get_enable,
345 .set_enable = ldo_set_enable,
346 .get_mode = out_get_mode,
347 .set_mode = out_set_mode,
350 U_BOOT_DRIVER(sandbox_ldo) = {
351 .name = SANDBOX_LDO_DRIVER,
352 .id = UCLASS_REGULATOR,
353 .ops = &sandbox_ldo_ops,
354 .probe = sandbox_ldo_probe,