2  * max8997.c - mfd core driver for the Maxim 8966 and 8997
34 #include <linux/mfd/max8997.h>
35 #include <linux/mfd/max8997-private.h>
44 	{ .name = "max8997-pmic", },
45 	{ .name = "max8997-rtc", },
46 	{ .name = "max8997-battery", },
47 	{ .name = "max8997-haptic", },
48 	{ .name = "max8997-muic", },
49 	{ .name = "max8997-led", .id = 1 },
50 	{ .name = "max8997-led", .id = 2 },
55 	{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
62 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_read_reg()  local
65 	mutex_lock(&max8997->iolock);  in max8997_read_reg()
67 	mutex_unlock(&max8997->iolock);  in max8997_read_reg()
79 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_bulk_read()  local
82 	mutex_lock(&max8997->iolock);  in max8997_bulk_read()
84 	mutex_unlock(&max8997->iolock);  in max8997_bulk_read()
94 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_write_reg()  local
97 	mutex_lock(&max8997->iolock);  in max8997_write_reg()
99 	mutex_unlock(&max8997->iolock);  in max8997_write_reg()
106 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_bulk_write()  local
109 	mutex_lock(&max8997->iolock);  in max8997_bulk_write()
111 	mutex_unlock(&max8997->iolock);  in max8997_bulk_write()
121 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_update_reg()  local
124 	mutex_lock(&max8997->iolock);  in max8997_update_reg()
131 	mutex_unlock(&max8997->iolock);  in max8997_update_reg()
137  * Only the common platform data elements for max8997 are parsed here from the
138  * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
141  * The max8997 platform data structure is instantiated here and the drivers for
173 	struct max8997_dev *max8997;  in max8997_i2c_probe()  local
177 	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),  in max8997_i2c_probe()
179 	if (max8997 == NULL)  in max8997_i2c_probe()
182 	i2c_set_clientdata(i2c, max8997);  in max8997_i2c_probe()
183 	max8997->dev = &i2c->dev;  in max8997_i2c_probe()
184 	max8997->i2c = i2c;  in max8997_i2c_probe()
185 	max8997->type = max8997_i2c_get_driver_data(i2c, id);  in max8997_i2c_probe()
186 	max8997->irq = i2c->irq;  in max8997_i2c_probe()
188 	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {  in max8997_i2c_probe()
189 		pdata = max8997_i2c_parse_dt_pdata(max8997->dev);  in max8997_i2c_probe()
197 	max8997->pdata = pdata;  in max8997_i2c_probe()
198 	max8997->ono = pdata->ono;  in max8997_i2c_probe()
200 	mutex_init(&max8997->iolock);  in max8997_i2c_probe()
202 	max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);  in max8997_i2c_probe()
203 	if (!max8997->rtc) {  in max8997_i2c_probe()
204 		dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");  in max8997_i2c_probe()
207 	i2c_set_clientdata(max8997->rtc, max8997);  in max8997_i2c_probe()
209 	max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);  in max8997_i2c_probe()
210 	if (!max8997->haptic) {  in max8997_i2c_probe()
211 		dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");  in max8997_i2c_probe()
215 	i2c_set_clientdata(max8997->haptic, max8997);  in max8997_i2c_probe()
217 	max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);  in max8997_i2c_probe()
218 	if (!max8997->muic) {  in max8997_i2c_probe()
219 		dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");  in max8997_i2c_probe()
223 	i2c_set_clientdata(max8997->muic, max8997);  in max8997_i2c_probe()
225 	pm_runtime_set_active(max8997->dev);  in max8997_i2c_probe()
227 	max8997_irq_init(max8997);  in max8997_i2c_probe()
229 	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,  in max8997_i2c_probe()
233 		dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);  in max8997_i2c_probe()
242 	/* MAX8997 has a power button input. */  in max8997_i2c_probe()
243 	device_init_wakeup(max8997->dev, true);  in max8997_i2c_probe()
248 	mfd_remove_devices(max8997->dev);  in max8997_i2c_probe()
249 	i2c_unregister_device(max8997->muic);  in max8997_i2c_probe()
251 	i2c_unregister_device(max8997->haptic);  in max8997_i2c_probe()
253 	i2c_unregister_device(max8997->rtc);  in max8997_i2c_probe()
258 	{ "max8997", TYPE_MAX8997 },
419 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_freeze()  local
424 				&max8997->reg_dump[i]);  in max8997_freeze()
428 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_freeze()
432 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_freeze()
441 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_restore()  local
446 				max8997->reg_dump[i]);  in max8997_restore()
450 				max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_restore()
454 				max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_restore()
463 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_suspend()  local
466 		irq_set_irq_wake(max8997->irq, 1);  in max8997_suspend()
473 	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);  in max8997_resume()  local
476 		irq_set_irq_wake(max8997->irq, 0);  in max8997_resume()
477 	return max8997_irq_resume(max8997);  in max8997_resume()
489 		   .name = "max8997",