1 // SPDX-License-Identifier: GPL-2.0+
3 // max8997.c - mfd core driver for the Maxim 8966 and 8997
8 // This driver is based on max8998.c
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 },
51 	mutex_lock(&max8997->iolock);  in max8997_read_reg()
53 	mutex_unlock(&max8997->iolock);  in max8997_read_reg()
68 	mutex_lock(&max8997->iolock);  in max8997_bulk_read()
70 	mutex_unlock(&max8997->iolock);  in max8997_bulk_read()
83 	mutex_lock(&max8997->iolock);  in max8997_write_reg()
85 	mutex_unlock(&max8997->iolock);  in max8997_write_reg()
95 	mutex_lock(&max8997->iolock);  in max8997_bulk_write()
97 	mutex_unlock(&max8997->iolock);  in max8997_bulk_write()
110 	mutex_lock(&max8997->iolock);  in max8997_update_reg()
117 	mutex_unlock(&max8997->iolock);  in max8997_update_reg()
124  * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
128  * the sub-modules need not instantiate another instance while parsing their
138 		return ERR_PTR(-ENOMEM);  in max8997_i2c_parse_dt_pdata()
140 	pd->ono = irq_of_parse_and_map(dev->of_node, 1);  in max8997_i2c_parse_dt_pdata()
148 	struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);  in max8997_i2c_probe()
151 	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),  in max8997_i2c_probe()
154 		return -ENOMEM;  in max8997_i2c_probe()
157 	max8997->dev = &i2c->dev;  in max8997_i2c_probe()
158 	max8997->i2c = i2c;  in max8997_i2c_probe()
159 	max8997->type = (uintptr_t)i2c_get_match_data(i2c);  in max8997_i2c_probe()
160 	max8997->irq = i2c->irq;  in max8997_i2c_probe()
162 	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {  in max8997_i2c_probe()
163 		pdata = max8997_i2c_parse_dt_pdata(max8997->dev);  in max8997_i2c_probe()
171 	max8997->pdata = pdata;  in max8997_i2c_probe()
172 	max8997->ono = pdata->ono;  in max8997_i2c_probe()
174 	mutex_init(&max8997->iolock);  in max8997_i2c_probe()
176 	max8997->rtc = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_RTC);  in max8997_i2c_probe()
177 	if (IS_ERR(max8997->rtc)) {  in max8997_i2c_probe()
178 		dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");  in max8997_i2c_probe()
179 		return PTR_ERR(max8997->rtc);  in max8997_i2c_probe()
181 	i2c_set_clientdata(max8997->rtc, max8997);  in max8997_i2c_probe()
183 	max8997->haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);  in max8997_i2c_probe()
184 	if (IS_ERR(max8997->haptic)) {  in max8997_i2c_probe()
185 		dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");  in max8997_i2c_probe()
186 		ret = PTR_ERR(max8997->haptic);  in max8997_i2c_probe()
189 	i2c_set_clientdata(max8997->haptic, max8997);  in max8997_i2c_probe()
191 	max8997->muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);  in max8997_i2c_probe()
192 	if (IS_ERR(max8997->muic)) {  in max8997_i2c_probe()
193 		dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");  in max8997_i2c_probe()
194 		ret = PTR_ERR(max8997->muic);  in max8997_i2c_probe()
197 	i2c_set_clientdata(max8997->muic, max8997);  in max8997_i2c_probe()
199 	pm_runtime_set_active(max8997->dev);  in max8997_i2c_probe()
203 	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,  in max8997_i2c_probe()
207 		dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);  in max8997_i2c_probe()
217 	device_init_wakeup(max8997->dev, true);  in max8997_i2c_probe()
222 	mfd_remove_devices(max8997->dev);  in max8997_i2c_probe()
223 	i2c_unregister_device(max8997->muic);  in max8997_i2c_probe()
225 	i2c_unregister_device(max8997->haptic);  in max8997_i2c_probe()
227 	i2c_unregister_device(max8997->rtc);  in max8997_i2c_probe()
398 				&max8997->reg_dump[i]);  in max8997_freeze()
402 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_freeze()
406 				&max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_freeze()
420 				max8997->reg_dump[i]);  in max8997_restore()
424 				max8997->reg_dump[i + MAX8997_REG_PMIC_END]);  in max8997_restore()
428 				max8997->reg_dump[i + MAX8997_REG_PMIC_END +  in max8997_restore()
439 	disable_irq(max8997->irq);  in max8997_suspend()
441 		irq_set_irq_wake(max8997->irq, 1);  in max8997_suspend()
451 		irq_set_irq_wake(max8997->irq, 0);  in max8997_resume()
452 	enable_irq(max8997->irq);  in max8997_resume()
464 	.driver = {