143 int retu_read(struct retu_dev *rdev, u8 reg)  in retu_read()  argument
148 	mutex_lock(&rdev->mutex);  in retu_read()
149 	ret = regmap_read(rdev->regmap, reg, &value);  in retu_read()
150 	mutex_unlock(&rdev->mutex);  in retu_read()
156 int retu_write(struct retu_dev *rdev, u8 reg, u16 data)  in retu_write()  argument
160 	mutex_lock(&rdev->mutex);  in retu_write()
161 	ret = regmap_write(rdev->regmap, reg, data);  in retu_write()
162 	mutex_unlock(&rdev->mutex);  in retu_write()
170 	struct retu_dev *rdev = retu_pm_power_off;  in retu_power_off()  local
176 	regmap_read(rdev->regmap, RETU_REG_CC1, &reg);  in retu_power_off()
177 	regmap_write(rdev->regmap, RETU_REG_CC1, reg | 2);  in retu_power_off()
180 	regmap_write(rdev->regmap, RETU_REG_WATCHDOG, 0);  in retu_power_off()
233 	struct retu_dev *rdev;  in retu_probe()  local
240 	rdev = devm_kzalloc(&i2c->dev, sizeof(*rdev), GFP_KERNEL);  in retu_probe()
241 	if (rdev == NULL)  in retu_probe()
244 	i2c_set_clientdata(i2c, rdev);  in retu_probe()
245 	rdev->dev = &i2c->dev;  in retu_probe()
246 	mutex_init(&rdev->mutex);  in retu_probe()
247 	rdev->regmap = devm_regmap_init(&i2c->dev, &retu_bus, &i2c->dev,  in retu_probe()
249 	if (IS_ERR(rdev->regmap))  in retu_probe()
250 		return PTR_ERR(rdev->regmap);  in retu_probe()
252 	ret = retu_read(rdev, RETU_REG_ASICR);  in retu_probe()
254 		dev_err(rdev->dev, "could not read %s revision: %d\n",  in retu_probe()
259 	dev_info(rdev->dev, "%s%s%s v%d.%d found\n", rdat->chip_name,  in retu_probe()
265 	ret = retu_write(rdev, rdat->irq_chip->mask_base, 0xffff);  in retu_probe()
269 	ret = regmap_add_irq_chip(rdev->regmap, i2c->irq, IRQF_ONESHOT, -1,  in retu_probe()
270 				  rdat->irq_chip, &rdev->irq_data);  in retu_probe()
274 	ret = mfd_add_devices(rdev->dev, -1, rdat->children, rdat->nchildren,  in retu_probe()
275 			      NULL, regmap_irq_chip_get_base(rdev->irq_data),  in retu_probe()
278 		regmap_del_irq_chip(i2c->irq, rdev->irq_data);  in retu_probe()
283 		retu_pm_power_off = rdev;  in retu_probe()
292 	struct retu_dev *rdev = i2c_get_clientdata(i2c);  in retu_remove()  local
294 	if (retu_pm_power_off == rdev) {  in retu_remove()
298 	mfd_remove_devices(rdev->dev);  in retu_remove()
299 	regmap_del_irq_chip(i2c->irq, rdev->irq_data);  in retu_remove()