1 // SPDX-License-Identifier: GPL-2.0-only
64 /* LDO output enable mask */
146 /*	LDO voltage control registers shift:
147 	LP3972_LDO1 -> 0, LP3972_LDO2 -> 4
148 	LP3972_LDO3 -> 0, LP3972_LDO4 -> 4
149 	LP3972_LDO5 -> 0
169 		return -EIO;  in lp3972_i2c_read()
182 		return -EIO;  in lp3972_i2c_write()
190 	mutex_lock(&lp3972->io_lock);  in lp3972_reg_read()
192 	lp3972_i2c_read(lp3972->i2c, reg, 1, &val);  in lp3972_reg_read()
194 	dev_dbg(lp3972->dev, "reg read 0x%02x -> 0x%02x\n", (int)reg,  in lp3972_reg_read()
197 	mutex_unlock(&lp3972->io_lock);  in lp3972_reg_read()
207 	mutex_lock(&lp3972->io_lock);  in lp3972_set_bits()
209 	ret = lp3972_i2c_read(lp3972->i2c, reg, 1, &tmp);  in lp3972_set_bits()
212 		ret = lp3972_i2c_write(lp3972->i2c, reg, 1, &tmp);  in lp3972_set_bits()
213 		dev_dbg(lp3972->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg,  in lp3972_set_bits()
216 	mutex_unlock(&lp3972->io_lock);  in lp3972_set_bits()
224 	int ldo = rdev_get_id(dev) - LP3972_LDO1;  in lp3972_ldo_is_enabled()  local
225 	u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo);  in lp3972_ldo_is_enabled()
228 	val = lp3972_reg_read(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo));  in lp3972_ldo_is_enabled()
235 	int ldo = rdev_get_id(dev) - LP3972_LDO1;  in lp3972_ldo_enable()  local
236 	u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo);  in lp3972_ldo_enable()
238 	return lp3972_set_bits(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo),  in lp3972_ldo_enable()
245 	int ldo = rdev_get_id(dev) - LP3972_LDO1;  in lp3972_ldo_disable()  local
246 	u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo);  in lp3972_ldo_disable()
248 	return lp3972_set_bits(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo),  in lp3972_ldo_disable()
255 	int ldo = rdev_get_id(dev) - LP3972_LDO1;  in lp3972_ldo_get_voltage_sel()  local
256 	u16 mask = LP3972_LDO_VOL_MASK(ldo);  in lp3972_ldo_get_voltage_sel()
259 	reg = lp3972_reg_read(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo));  in lp3972_ldo_get_voltage_sel()
260 	val = (reg >> LP3972_LDO_VOL_CONTR_SHIFT(ldo)) & mask;  in lp3972_ldo_get_voltage_sel()
269 	int ldo = rdev_get_id(dev) - LP3972_LDO1;  in lp3972_ldo_set_voltage_sel()  local
272 	shift = LP3972_LDO_VOL_CONTR_SHIFT(ldo);  in lp3972_ldo_set_voltage_sel()
273 	ret = lp3972_set_bits(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo),  in lp3972_ldo_set_voltage_sel()
274 		LP3972_LDO_VOL_MASK(ldo) << shift, selector << shift);  in lp3972_ldo_set_voltage_sel()
286 	switch (ldo) {  in lp3972_ldo_set_voltage_sel()
289 		shift = LP3972_LDO_VOL_CHANGE_SHIFT(ldo);  in lp3972_ldo_set_voltage_sel()
317 	int buck = rdev_get_id(dev) - LP3972_DCDC1;  in lp3972_dcdc_is_enabled()
328 	int buck = rdev_get_id(dev) - LP3972_DCDC1;  in lp3972_dcdc_enable()
340 	int buck = rdev_get_id(dev) - LP3972_DCDC1;  in lp3972_dcdc_disable()
352 	int buck = rdev_get_id(dev) - LP3972_DCDC1;  in lp3972_dcdc_get_voltage_sel()
365 	int buck = rdev_get_id(dev) - LP3972_DCDC1;  in lp3972_dcdc_set_voltage_sel()
476 	for (i = 0; i < pdata->num_regulators; i++) {  in setup_regulators()
477 		struct lp3972_regulator_subdev *reg = &pdata->regulators[i];  in setup_regulators()
481 		config.dev = lp3972->dev;  in setup_regulators()
482 		config.init_data = reg->initdata;  in setup_regulators()
485 		rdev = devm_regulator_register(lp3972->dev,  in setup_regulators()
486 					       &regulators[reg->id], &config);  in setup_regulators()
489 			dev_err(lp3972->dev, "regulator init failed: %d\n",  in setup_regulators()
501 	struct lp3972_platform_data *pdata = dev_get_platdata(&i2c->dev);  in lp3972_i2c_probe()
506 		dev_dbg(&i2c->dev, "No platform init data supplied\n");  in lp3972_i2c_probe()
507 		return -ENODEV;  in lp3972_i2c_probe()
510 	lp3972 = devm_kzalloc(&i2c->dev, sizeof(struct lp3972), GFP_KERNEL);  in lp3972_i2c_probe()
512 		return -ENOMEM;  in lp3972_i2c_probe()
514 	lp3972->i2c = i2c;  in lp3972_i2c_probe()
515 	lp3972->dev = &i2c->dev;  in lp3972_i2c_probe()
517 	mutex_init(&lp3972->io_lock);  in lp3972_i2c_probe()
523 		ret = -ENODEV;  in lp3972_i2c_probe()
524 		dev_err(&i2c->dev, "chip reported: val = 0x%x\n", val);  in lp3972_i2c_probe()
527 		dev_err(&i2c->dev, "failed to detect device. ret = %d\n", ret);  in lp3972_i2c_probe()