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 #define MODE(_id, _val, _name) [_id] = { \
19 .register_value = _val, \
23 #define RANGE(_min, _max, _step) { \
30 * struct output_range - helper structure type to define the range of output
31 * operating values (current/voltage), limited by the PMIC IC design.
33 * @min - minimum value
34 * @max - maximum value
43 /* BUCK: 1,2 - voltage range */
44 static struct output_range buck_voltage_range[] = {
45 RANGE(OUT_BUCK1_UV_MIN, OUT_BUCK1_UV_MAX, OUT_BUCK1_UV_STEP),
46 RANGE(OUT_BUCK2_UV_MIN, OUT_BUCK2_UV_MAX, OUT_BUCK2_UV_STEP),
49 /* BUCK: 1 - current range */
50 static struct output_range buck_current_range[] = {
51 RANGE(OUT_BUCK1_UA_MIN, OUT_BUCK1_UA_MAX, OUT_BUCK1_UA_STEP),
54 /* BUCK operating modes */
55 static struct dm_regulator_mode sandbox_buck_modes[] = {
56 MODE(BUCK_OM_OFF, OM2REG(BUCK_OM_OFF), "OFF"),
57 MODE(BUCK_OM_ON, OM2REG(BUCK_OM_ON), "ON"),
58 MODE(BUCK_OM_PWM, OM2REG(BUCK_OM_PWM), "PWM"),
61 /* LDO: 1,2 - voltage range */
62 static struct output_range ldo_voltage_range[] = {
63 RANGE(OUT_LDO1_UV_MIN, OUT_LDO1_UV_MAX, OUT_LDO1_UV_STEP),
64 RANGE(OUT_LDO2_UV_MIN, OUT_LDO2_UV_MAX, OUT_LDO2_UV_STEP),
67 /* LDO: 1 - current range */
68 static struct output_range ldo_current_range[] = {
69 RANGE(OUT_LDO1_UA_MIN, OUT_LDO1_UA_MAX, OUT_LDO1_UA_STEP),
72 /* LDO operating modes */
73 static struct dm_regulator_mode sandbox_ldo_modes[] = {
74 MODE(LDO_OM_OFF, OM2REG(LDO_OM_OFF), "OFF"),
75 MODE(LDO_OM_ON, OM2REG(LDO_OM_ON), "ON"),
76 MODE(LDO_OM_SLEEP, OM2REG(LDO_OM_SLEEP), "SLEEP"),
77 MODE(LDO_OM_STANDBY, OM2REG(LDO_OM_STANDBY), "STANDBY"),
80 int out_get_value(struct udevice *dev, int output_count, int reg_type,
81 struct output_range *range)
87 if (dev->driver_data > output_count) {
88 pr_err("Unknown regulator number: %lu for PMIC %s!",
89 dev->driver_data, dev->name);
93 reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
94 ret = pmic_read(dev->parent, reg, ®_val, 1);
96 pr_err("PMIC read failed: %d\n", ret);
100 ret = REG2VAL(range[dev->driver_data - 1].min,
101 range[dev->driver_data - 1].step,
107 static int out_set_value(struct udevice *dev, int output_count, int reg_type,
108 struct output_range *range, int value)
115 if (dev->driver_data > output_count) {
116 pr_err("Unknown regulator number: %lu for PMIC %s!",
117 dev->driver_data, dev->name);
121 max_value = range[dev->driver_data - 1].max;
122 if (value > max_value) {
123 pr_err("Wrong value for %s: %lu. Max is: %d.",
124 dev->name, dev->driver_data, max_value);
128 reg_val = VAL2REG(range[dev->driver_data - 1].min,
129 range[dev->driver_data - 1].step,
132 reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
133 ret = pmic_write(dev->parent, reg, ®_val, 1);
135 pr_err("PMIC write failed: %d\n", ret);
142 static int out_get_mode(struct udevice *dev)
144 struct dm_regulator_uclass_platdata *uc_pdata;
150 uc_pdata = dev_get_uclass_platdata(dev);
152 reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
153 ret = pmic_read(dev->parent, reg, ®_val, 1);
155 pr_err("PMIC read failed: %d\n", ret);
159 for (i = 0; i < uc_pdata->mode_count; i++) {
160 if (reg_val == uc_pdata->mode[i].register_value)
161 return uc_pdata->mode[i].id;
164 pr_err("Unknown operation mode for %s!", dev->name);
168 static int out_set_mode(struct udevice *dev, int mode)
170 struct dm_regulator_uclass_platdata *uc_pdata;
176 uc_pdata = dev_get_uclass_platdata(dev);
178 if (mode >= uc_pdata->mode_count)
181 for (i = 0; i < uc_pdata->mode_count; i++) {
182 if (mode == uc_pdata->mode[i].id) {
183 reg_val = uc_pdata->mode[i].register_value;
189 pr_err("Unknown operation mode for %s!", dev->name);
193 reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
194 ret = pmic_write(dev->parent, reg, (uint8_t *)®_val, 1);
196 pr_err("PMIC write failed: %d\n", ret);
203 static int buck_get_voltage(struct udevice *dev)
205 return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
209 static int buck_set_voltage(struct udevice *dev, int uV)
211 return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
212 buck_voltage_range, uV);
215 static int buck_get_current(struct udevice *dev)
217 /* BUCK2 - unsupported */
218 if (dev->driver_data == 2)
221 return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
225 static int buck_set_current(struct udevice *dev, int uA)
227 /* BUCK2 - unsupported */
228 if (dev->driver_data == 2)
231 return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
232 buck_current_range, uA);
235 static int buck_get_enable(struct udevice *dev)
237 if (out_get_mode(dev) == BUCK_OM_OFF)
243 static int buck_set_enable(struct udevice *dev, bool enable)
245 return out_set_mode(dev, enable ? BUCK_OM_ON : BUCK_OM_OFF);
248 static int sandbox_buck_probe(struct udevice *dev)
250 struct dm_regulator_uclass_platdata *uc_pdata;
252 uc_pdata = dev_get_uclass_platdata(dev);
254 uc_pdata->type = REGULATOR_TYPE_BUCK;
255 uc_pdata->mode = sandbox_buck_modes;
256 uc_pdata->mode_count = ARRAY_SIZE(sandbox_buck_modes);
261 static const struct dm_regulator_ops sandbox_buck_ops = {
262 .get_value = buck_get_voltage,
263 .set_value = buck_set_voltage,
264 .get_current = buck_get_current,
265 .set_current = buck_set_current,
266 .get_enable = buck_get_enable,
267 .set_enable = buck_set_enable,
268 .get_mode = out_get_mode,
269 .set_mode = out_set_mode,
272 U_BOOT_DRIVER(sandbox_buck) = {
273 .name = SANDBOX_BUCK_DRIVER,
274 .id = UCLASS_REGULATOR,
275 .ops = &sandbox_buck_ops,
276 .probe = sandbox_buck_probe,
279 static int ldo_get_voltage(struct udevice *dev)
281 return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
285 static int ldo_set_voltage(struct udevice *dev, int uV)
287 return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
288 ldo_voltage_range, uV);
291 static int ldo_get_current(struct udevice *dev)
293 /* LDO2 - unsupported */
294 if (dev->driver_data == 2)
297 return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
301 static int ldo_set_current(struct udevice *dev, int uA)
303 /* LDO2 - unsupported */
304 if (dev->driver_data == 2)
307 return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
308 ldo_current_range, uA);
311 static int ldo_get_enable(struct udevice *dev)
313 if (out_get_mode(dev) == LDO_OM_OFF)
319 static int ldo_set_enable(struct udevice *dev, bool enable)
321 return out_set_mode(dev, enable ? LDO_OM_ON : LDO_OM_OFF);
324 static int sandbox_ldo_probe(struct udevice *dev)
326 struct dm_regulator_uclass_platdata *uc_pdata;
328 uc_pdata = dev_get_uclass_platdata(dev);
330 uc_pdata->type = REGULATOR_TYPE_LDO;
331 uc_pdata->mode = sandbox_ldo_modes;
332 uc_pdata->mode_count = ARRAY_SIZE(sandbox_ldo_modes);
337 static const struct dm_regulator_ops sandbox_ldo_ops = {
338 .get_value = ldo_get_voltage,
339 .set_value = ldo_set_voltage,
340 .get_current = ldo_get_current,
341 .set_current = ldo_set_current,
342 .get_enable = ldo_get_enable,
343 .set_enable = ldo_set_enable,
344 .get_mode = out_get_mode,
345 .set_mode = out_set_mode,
348 U_BOOT_DRIVER(sandbox_ldo) = {
349 .name = SANDBOX_LDO_DRIVER,
350 .id = UCLASS_REGULATOR,
351 .ops = &sandbox_ldo_ops,
352 .probe = sandbox_ldo_probe,