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max77843.c


products/Sources/formale Sprachen/C/Linux/drivers/mfd/max77843.c

// SPDX-License-Identifier: GPL-2.0+ // // MFD core driver for the Maxim MAX77843 // // Copyright (C) 2015 Samsung Electronics // Author: Jaewon Kim // Author: Beomho Seo #include #include #include #include #include #include #include #include #include static const struct mfd_cell max77843_devs[] = { { .name = "max77843-muic", .of_compatible = "maxim,max77843-muic", }, { .name = "max77843-regulator", .of_compatible = "maxim,max77843-regulator", }, { .name = "max77843-charger", .of_compatible = "maxim,max77843-charger" }, { .name = "max77843-fuelgauge", .of_compatible = "maxim,max77843-fuelgauge", }, { .name = "max77843-haptic", .of_compatible = "maxim,max77843-haptic", }, }; static const struct regmap_config max77843_charger_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77843_CHG_REG_END, }; static const struct regmap_config max77843_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77843_SYS_REG_END, }; static const struct regmap_irq max77843_irqs[] = { /* TOPSYS interrupts */ { .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSUVLO_INT, }, { .reg_offset = 0, .mask = MAX77843_SYS_IRQ_SYSOVLO_INT, }, { .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TSHDN_INT, }, { .reg_offset = 0, .mask = MAX77843_SYS_IRQ_TM_INT, }, }; static const struct regmap_irq_chip max77843_irq_chip = { .name = "max77843", .status_base = MAX77843_SYS_REG_SYSINTSRC, .mask_base = MAX77843_SYS_REG_SYSINTMASK, .num_regs = 1, .irqs = max77843_irqs, .num_irqs = ARRAY_SIZE(max77843_irqs), }; /* Charger and Charger regulator use same regmap. */ static int max77843_chg_init(struct max77693_dev *max77843) { int ret; max77843->i2c_chg = i2c_new_dummy_device(max77843->i2c->adapter, I2C_ADDR_CHG); if (IS_ERR(max77843->i2c_chg)) { dev_err(&max77843->i2c->dev, "Cannot allocate I2C device for Charger\n"); return PTR_ERR(max77843->i2c_chg); } i2c_set_clientdata(max77843->i2c_chg, max77843); max77843->regmap_chg = devm_regmap_init_i2c(max77843->i2c_chg, &max77843_charger_regmap_config); if (IS_ERR(max77843->regmap_chg)) { ret = PTR_ERR(max77843->regmap_chg); goto err_chg_i2c; } return 0; err_chg_i2c: i2c_unregister_device(max77843->i2c_chg); return ret; } static int max77843_probe(struct i2c_client *i2c) { const struct i2c_device_id *id = i2c_client_get_device_id(i2c); struct max77693_dev *max77843; unsigned int reg_data; int ret; max77843 = devm_kzalloc(&i2c->dev, sizeof(*max77843), GFP_KERNEL); if (!max77843) return -ENOMEM; i2c_set_clientdata(i2c, max77843); max77843->dev = &i2c->dev; max77843->i2c = i2c; max77843->irq = i2c->irq; max77843->type = id->driver_data; max77843->regmap = devm_regmap_init_i2c(i2c, &max77843_regmap_config); if (IS_ERR(max77843->regmap)) { dev_err(&i2c->dev, "Failed to allocate topsys register map\n"); return PTR_ERR(max77843->regmap); } ret = regmap_add_irq_chip(max77843->regmap, max77843->irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, 0, &max77843_irq_chip, &max77843->irq_data_topsys); if (ret) { dev_err(&i2c->dev, "Failed to add TOPSYS IRQ chip\n"); return ret; } ret = regmap_read(max77843->regmap, MAX77843_SYS_REG_PMICID, ®_data); if (ret < 0) { dev_err(&i2c->dev, "Failed to read PMIC ID\n"); goto err_pmic_id; } dev_info(&i2c->dev, "device ID: 0x%x\n", reg_data); ret = max77843_chg_init(max77843); if (ret) { dev_err(&i2c->dev, "Failed to init Charger\n"); goto err_pmic_id; } ret = regmap_update_bits(max77843->regmap, MAX77843_SYS_REG_INTSRCMASK, MAX77843_INTSRC_MASK_MASK, (unsigned int)~MAX77843_INTSRC_MASK_MASK); if (ret < 0) { dev_err(&i2c->dev, "Failed to unmask interrupt source\n"); goto err_pmic_id; } ret = mfd_add_devices(max77843->dev, -1, max77843_devs, ARRAY_SIZE(max77843_devs), NULL, 0, NULL); if (ret < 0) { dev_err(&i2c->dev, "Failed to add mfd device\n"); goto err_pmic_id; } device_init_wakeup(max77843->dev, true); return 0; err_pmic_id: regmap_del_irq_chip(max77843->irq, max77843->irq_data_topsys); return ret; } static const struct of_device_id max77843_dt_match[] = { { .compatible = "maxim,max77843", }, { }, }; static const struct i2c_device_id max77843_id[] = { { "max77843", TYPE_MAX77843, }, { }, }; static int __maybe_unused max77843_suspend(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); struct max77693_dev *max77843 = i2c_get_clientdata(i2c); disable_irq(max77843->irq); if (device_may_wakeup(dev)) enable_irq_wake(max77843->irq); return 0; } static int __maybe_unused max77843_resume(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); struct max77693_dev *max77843 = i2c_get_clientdata(i2c); if (device_may_wakeup(dev)) disable_irq_wake(max77843->irq); enable_irq(max77843->irq); return 0; } static SIMPLE_DEV_PM_OPS(max77843_pm, max77843_suspend, max77843_resume); static struct i2c_driver max77843_i2c_driver = { .driver = { .name = "max77843", .pm = &max77843_pm, .of_match_table = max77843_dt_match, .suppress_bind_attrs = true, }, .probe = max77843_probe, .id_table = max77843_id, }; static int __init max77843_i2c_init(void) { return i2c_add_driver(&max77843_i2c_driver); } subsys_initcall(max77843_i2c_init);

                                                                                                                                                                                                                                                                                                                                                                                                     

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