drivers/mfd/max8997.c

3 // max8997.c - mfd core driver for the Maxim 8966 and 8997
20 #include <linux/mfd/max8997.h>
21 #include <linux/mfd/max8997-private.h>
30 	{ .name = "max8997-pmic", },
31 	{ .name = "max8997-rtc", },
32 	{ .name = "max8997-battery", },
33 	{ .name = "max8997-haptic", },
34 	{ .name = "max8997-muic", },
35 	{ .name = "max8997-led", .id = 1 },
36 	{ .name = "max8997-led", .id = 2 },
41 	{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
48 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_read_reg()  local
51 	mutex_lock(&max8997->iolock);  in max8997_read_reg()
53 	mutex_unlock(&max8997->iolock);  in max8997_read_reg()
65 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_bulk_read()  local
68 	mutex_lock(&max8997->iolock);  in max8997_bulk_read()
70 	mutex_unlock(&max8997->iolock);  in max8997_bulk_read()
80 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_write_reg()  local
83 	mutex_lock(&max8997->iolock);  in max8997_write_reg()
85 	mutex_unlock(&max8997->iolock);  in max8997_write_reg()
92 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_bulk_write()  local
95 	mutex_lock(&max8997->iolock);  in max8997_bulk_write()
97 	mutex_unlock(&max8997->iolock);  in max8997_bulk_write()
107 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_update_reg()  local
110 	mutex_lock(&max8997->iolock);  in max8997_update_reg()
117 	mutex_unlock(&max8997->iolock);  in max8997_update_reg()
123  * Only the common platform data elements for max8997 are parsed here from the
124  * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
127  * The max8997 platform data structure is instantiated here and the drivers for
157 	struct max8997_dev *max8997;  in max8997_i2c_probe()  local
161 	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),  in max8997_i2c_probe()
163 	if (max8997 == NULL)  in max8997_i2c_probe()
166 	i2c_set_clientdata(i2c, max8997);  in max8997_i2c_probe()
167 	max8997->dev = &i2c->dev;  in max8997_i2c_probe()
168 	max8997->i2c = i2c;  in max8997_i2c_probe()
169 	max8997->type = max8997_i2c_get_driver_data(i2c, id);  in max8997_i2c_probe()
170 	max8997->irq = i2c->irq;  in max8997_i2c_probe()
172 	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {  in max8997_i2c_probe()
173 		pdata = max8997_i2c_parse_dt_pdata(max8997->dev);  in max8997_i2c_probe()
181 	max8997->pdata = pdata;  in max8997_i2c_probe()
182 	max8997->ono = pdata->ono;  in max8997_i2c_probe()
184 	mutex_init(&max8997->iolock);  in max8997_i2c_probe()
186 	max8997->rtc = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_RTC);  in max8997_i2c_probe()
187 	if (IS_ERR(max8997->rtc)) {  in max8997_i2c_probe()
188 		dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");  in max8997_i2c_probe()
189 		return PTR_ERR(max8997->rtc);  in max8997_i2c_probe()
191 	i2c_set_clientdata(max8997->rtc, max8997);  in max8997_i2c_probe()
193 	max8997->haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);  in max8997_i2c_probe()
194 	if (IS_ERR(max8997->haptic)) {  in max8997_i2c_probe()
195 		dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");  in max8997_i2c_probe()
196 		ret = PTR_ERR(max8997->haptic);  in max8997_i2c_probe()
199 	i2c_set_clientdata(max8997->haptic, max8997);  in max8997_i2c_probe()
201 	max8997->muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);  in max8997_i2c_probe()
202 	if (IS_ERR(max8997->muic)) {  in max8997_i2c_probe()
203 		dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");  in max8997_i2c_probe()
204 		ret = PTR_ERR(max8997->muic);  in max8997_i2c_probe()
207 	i2c_set_clientdata(max8997->muic, max8997);  in max8997_i2c_probe()
209 	pm_runtime_set_active(max8997->dev);  in max8997_i2c_probe()
211 	max8997_irq_init(max8997);  in max8997_i2c_probe()
213 	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,  in max8997_i2c_probe()
217 		dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);  in max8997_i2c_probe()
226 	/* MAX8997 has a power button input. */  in max8997_i2c_probe()
227 	device_init_wakeup(max8997->dev, true);  in max8997_i2c_probe()
232 	mfd_remove_devices(max8997->dev);  in max8997_i2c_probe()
233 	i2c_unregister_device(max8997->muic);  in max8997_i2c_probe()
235 	i2c_unregister_device(max8997->haptic);  in max8997_i2c_probe()
237 	i2c_unregister_device(max8997->rtc);  in max8997_i2c_probe()
242 	{ "max8997", TYPE_MAX8997 },
403 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_freeze()  local
408 				&max8997->reg_dump[i]);  in max8997_freeze()
412 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_freeze()
416 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_freeze()
425 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_restore()  local
430 				max8997->reg_dump[i]);  in max8997_restore()
434 				max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_restore()
438 				max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_restore()
447 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_suspend()  local
449 	disable_irq(max8997->irq);  in max8997_suspend()
451 		irq_set_irq_wake(max8997->irq, 1);  in max8997_suspend()
458 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_resume()  local
461 		irq_set_irq_wake(max8997->irq, 0);  in max8997_resume()
462 	enable_irq(max8997->irq);  in max8997_resume()
463 	return max8997_irq_resume(max8997);  in max8997_resume()
475 		   .name = "max8997",