/* * max77693.c - mfd core driver for the MAX 77693 * * Copyright (C) 2012 Samsung Electronics * SangYoung Son <hello.son@smasung.com> * * This program is not provided / owned by Maxim Integrated Products. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * This driver is based on max8997.c */ #include <linux/module.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/of.h> #include <linux/pm_runtime.h> #include <linux/mutex.h> #include <linux/mfd/core.h> #include <linux/mfd/max77693.h> #include <linux/mfd/max77693-private.h> #include <linux/regulator/machine.h> #include <linux/regmap.h> #define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */ #define I2C_ADDR_MUIC (0x4A >> 1) #define I2C_ADDR_HAPTIC (0x90 >> 1) static const struct mfd_cell max77693_devs[] = { { .name = "max77693-pmic", }, { .name = "max77693-charger", .of_compatible = "maxim,max77693-charger", }, { .name = "max77693-muic", }, { .name = "max77693-haptic", .of_compatible = "maxim,max77693-haptic", }, { .name = "max77693-flash", .of_compatible = "maxim,max77693-flash", }, }; static const struct regmap_config max77693_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77693_PMIC_REG_END, }; static const struct regmap_irq max77693_led_irqs[] = { { .mask = LED_IRQ_FLED2_OPEN, }, { .mask = LED_IRQ_FLED2_SHORT, }, { .mask = LED_IRQ_FLED1_OPEN, }, { .mask = LED_IRQ_FLED1_SHORT, }, { .mask = LED_IRQ_MAX_FLASH, }, }; static const struct regmap_irq_chip max77693_led_irq_chip = { .name = "max77693-led", .status_base = MAX77693_LED_REG_FLASH_INT, .mask_base = MAX77693_LED_REG_FLASH_INT_MASK, .mask_invert = false, .num_regs = 1, .irqs = max77693_led_irqs, .num_irqs = ARRAY_SIZE(max77693_led_irqs), }; static const struct regmap_irq max77693_topsys_irqs[] = { { .mask = TOPSYS_IRQ_T120C_INT, }, { .mask = TOPSYS_IRQ_T140C_INT, }, { .mask = TOPSYS_IRQ_LOWSYS_INT, }, }; static const struct regmap_irq_chip max77693_topsys_irq_chip = { .name = "max77693-topsys", .status_base = MAX77693_PMIC_REG_TOPSYS_INT, .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK, .mask_invert = false, .num_regs = 1, .irqs = max77693_topsys_irqs, .num_irqs = ARRAY_SIZE(max77693_topsys_irqs), }; static const struct regmap_irq max77693_charger_irqs[] = { { .mask = CHG_IRQ_BYP_I, }, { .mask = CHG_IRQ_THM_I, }, { .mask = CHG_IRQ_BAT_I, }, { .mask = CHG_IRQ_CHG_I, }, { .mask = CHG_IRQ_CHGIN_I, }, }; static const struct regmap_irq_chip max77693_charger_irq_chip = { .name = "max77693-charger", .status_base = MAX77693_CHG_REG_CHG_INT, .mask_base = MAX77693_CHG_REG_CHG_INT_MASK, .mask_invert = false, .num_regs = 1, .irqs = max77693_charger_irqs, .num_irqs = ARRAY_SIZE(max77693_charger_irqs), }; static const struct regmap_config max77693_regmap_muic_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77693_MUIC_REG_END, }; static const struct regmap_irq max77693_muic_irqs[] = { { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, }, { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, }, { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, }, { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, }, { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, }, { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, }, }; static const struct regmap_irq_chip max77693_muic_irq_chip = { .name = "max77693-muic", .status_base = MAX77693_MUIC_REG_INT1, .mask_base = MAX77693_MUIC_REG_INTMASK1, .mask_invert = true, .num_regs = 3, .irqs = max77693_muic_irqs, .num_irqs = ARRAY_SIZE(max77693_muic_irqs), }; static const struct regmap_config max77693_regmap_haptic_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77693_HAPTIC_REG_END, }; static int max77693_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct max77693_dev *max77693; unsigned int reg_data; int ret = 0; max77693 = devm_kzalloc(&i2c->dev, sizeof(struct max77693_dev), GFP_KERNEL); if (max77693 == NULL) return -ENOMEM; i2c_set_clientdata(i2c, max77693); max77693->dev = &i2c->dev; max77693->i2c = i2c; max77693->irq = i2c->irq; max77693->type = id->driver_data; max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config); if (IS_ERR(max77693->regmap)) { ret = PTR_ERR(max77693->regmap); dev_err(max77693->dev, "failed to allocate register map: %d\n", ret); return ret; } ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2, ®_data); if (ret < 0) { dev_err(max77693->dev, "device not found on this channel\n"); return ret; } else dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); if (!max77693->muic) { dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n"); return -ENODEV; } i2c_set_clientdata(max77693->muic, max77693); max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); if (!max77693->haptic) { dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n"); ret = -ENODEV; goto err_i2c_haptic; } i2c_set_clientdata(max77693->haptic, max77693); max77693->regmap_haptic = devm_regmap_init_i2c(max77693->haptic, &max77693_regmap_haptic_config); if (IS_ERR(max77693->regmap_haptic)) { ret = PTR_ERR(max77693->regmap_haptic); dev_err(max77693->dev, "failed to initialize haptic register map: %d\n", ret); goto err_regmap; } /* * Initialize register map for MUIC device because use regmap-muic * instance of MUIC device when irq of max77693 is initialized * before call max77693-muic probe() function. */ max77693->regmap_muic = devm_regmap_init_i2c(max77693->muic, &max77693_regmap_muic_config); if (IS_ERR(max77693->regmap_muic)) { ret = PTR_ERR(max77693->regmap_muic); dev_err(max77693->dev, "failed to allocate register map: %d\n", ret); goto err_regmap; } ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &max77693_led_irq_chip, &max77693->irq_data_led); if (ret) { dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); goto err_regmap; } ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &max77693_topsys_irq_chip, &max77693->irq_data_topsys); if (ret) { dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); goto err_irq_topsys; } ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &max77693_charger_irq_chip, &max77693->irq_data_charger); if (ret) { dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); goto err_irq_charger; } ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &max77693_muic_irq_chip, &max77693->irq_data_muic); if (ret) { dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); goto err_irq_muic; } /* Unmask interrupts from all blocks in interrupt source register */ ret = regmap_update_bits(max77693->regmap, MAX77693_PMIC_REG_INTSRC_MASK, SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL); if (ret < 0) { dev_err(max77693->dev, "Could not unmask interrupts in INTSRC: %d\n", ret); goto err_intsrc; } pm_runtime_set_active(max77693->dev); ret = mfd_add_devices(max77693->dev, -1, max77693_devs, ARRAY_SIZE(max77693_devs), NULL, 0, NULL); if (ret < 0) goto err_mfd; return ret; err_mfd: mfd_remove_devices(max77693->dev); err_intsrc: regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); err_irq_muic: regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); err_irq_charger: regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); err_irq_topsys: regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); err_regmap: i2c_unregister_device(max77693->haptic); err_i2c_haptic: i2c_unregister_device(max77693->muic); return ret; } static int max77693_i2c_remove(struct i2c_client *i2c) { struct max77693_dev *max77693 = i2c_get_clientdata(i2c); mfd_remove_devices(max77693->dev); regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); regmap_del_irq_chip(max77693->irq, max77693->irq_data_charger); regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); i2c_unregister_device(max77693->muic); i2c_unregister_device(max77693->haptic); return 0; } static const struct i2c_device_id max77693_i2c_id[] = { { "max77693", TYPE_MAX77693 }, { } }; MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); static int max77693_suspend(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct max77693_dev *max77693 = i2c_get_clientdata(i2c); if (device_may_wakeup(dev)) { enable_irq_wake(max77693->irq); disable_irq(max77693->irq); } return 0; } static int max77693_resume(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct max77693_dev *max77693 = i2c_get_clientdata(i2c); if (device_may_wakeup(dev)) { disable_irq_wake(max77693->irq); enable_irq(max77693->irq); } return 0; } static const struct dev_pm_ops max77693_pm = { .suspend = max77693_suspend, .resume = max77693_resume, }; #ifdef CONFIG_OF static const struct of_device_id max77693_dt_match[] = { { .compatible = "maxim,max77693" }, {}, }; #endif static struct i2c_driver max77693_i2c_driver = { .driver = { .name = "max77693", .owner = THIS_MODULE, .pm = &max77693_pm, .of_match_table = of_match_ptr(max77693_dt_match), }, .probe = max77693_i2c_probe, .remove = max77693_i2c_remove, .id_table = max77693_i2c_id, }; static int __init max77693_i2c_init(void) { return i2c_add_driver(&max77693_i2c_driver); } /* init early so consumer devices can complete system boot */ subsys_initcall(max77693_i2c_init); static void __exit max77693_i2c_exit(void) { i2c_del_driver(&max77693_i2c_driver); } module_exit(max77693_i2c_exit); MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>"); MODULE_LICENSE("GPL");