/* * pf1550.c - mfd core driver for the PF1550 * * Copyright (C) 2016 Freescale Semiconductor, Inc. * Robin Gong * * 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. * * This driver is based on max77693.c */ #include #include #include #include #include #include #include #include static const struct mfd_cell pf1550_devs[] = { { .name = "pf1550-regulator", .of_compatible = "fsl,pf1550-regulator", }, { .name = "pf1550-onkey", .of_compatible = "fsl,pf1550-onkey", }, { .name = "pf1550-charger", .of_compatible = "fsl,pf1550-charger", }, }; static const struct regmap_config pf1550_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = PF1550_PMIC_REG_END, }; static const struct regmap_irq pf1550_regulator_irqs[] = { { .reg_offset = 0, .mask = PMIC_IRQ_SW1_LS, }, { .reg_offset = 0, .mask = PMIC_IRQ_SW2_LS, }, { .reg_offset = 0, .mask = PMIC_IRQ_SW3_LS, }, { .reg_offset = 3, .mask = PMIC_IRQ_SW1_HS, }, { .reg_offset = 3, .mask = PMIC_IRQ_SW2_HS, }, { .reg_offset = 3, .mask = PMIC_IRQ_SW3_HS, }, { .reg_offset = 16, .mask = PMIC_IRQ_LDO1_FAULT, }, { .reg_offset = 16, .mask = PMIC_IRQ_LDO2_FAULT, }, { .reg_offset = 16, .mask = PMIC_IRQ_LDO3_FAULT, }, { .reg_offset = 22, .mask = PMIC_IRQ_TEMP_110, }, { .reg_offset = 22, .mask = PMIC_IRQ_TEMP_125, }, }; static const struct regmap_irq_chip pf1550_regulator_irq_chip = { .name = "pf1550-regulator", .status_base = PF1550_PMIC_REG_SW_INT_STAT0, .mask_base = PF1550_PMIC_REG_SW_INT_MASK0, .mask_invert = false, .num_regs = 23, .irqs = pf1550_regulator_irqs, .num_irqs = ARRAY_SIZE(pf1550_regulator_irqs), }; static const struct regmap_irq pf1550_onkey_irqs[] = { { .reg_offset = 0, .mask = ONKEY_IRQ_PUSHI, }, { .reg_offset = 0, .mask = ONKEY_IRQ_1SI, }, { .reg_offset = 0, .mask = ONKEY_IRQ_2SI, }, { .reg_offset = 0, .mask = ONKEY_IRQ_3SI, }, { .reg_offset = 0, .mask = ONKEY_IRQ_4SI, }, { .reg_offset = 0, .mask = ONKEY_IRQ_8SI, }, }; static const struct regmap_irq_chip pf1550_onkey_irq_chip = { .name = "pf1550-onkey", .status_base = PF1550_PMIC_REG_ONKEY_INT_STAT0, .ack_base = PF1550_PMIC_REG_ONKEY_INT_STAT0, .mask_base = PF1550_PMIC_REG_ONKEY_INT_MASK0, .mask_invert = false, .use_ack = 1, .init_ack_masked = 1, .num_regs = 1, .irqs = pf1550_onkey_irqs, .num_irqs = ARRAY_SIZE(pf1550_onkey_irqs), }; static const struct regmap_irq pf1550_charger_irqs[] = { { .reg_offset = 0, .mask = CHARG_IRQ_BAT2SOCI, }, { .reg_offset = 0, .mask = CHARG_IRQ_BATI, }, { .reg_offset = 0, .mask = CHARG_IRQ_CHGI, }, { .reg_offset = 0, .mask = CHARG_IRQ_VBUSI, }, { .reg_offset = 0, .mask = CHARG_IRQ_THMI, }, }; static const struct regmap_irq_chip pf1550_charger_irq_chip = { .name = "pf1550-charger", .status_base = PF1550_CHARG_REG_CHG_INT, .mask_base = PF1550_CHARG_REG_CHG_INT_MASK, .mask_invert = false, .num_regs = 1, .irqs = pf1550_charger_irqs, .num_irqs = ARRAY_SIZE(pf1550_charger_irqs), }; int pf1550_read_otp(struct pf1550_dev *pf1550, unsigned int index, unsigned int *val) { int ret = 0; ret = regmap_write(pf1550->regmap, PF1550_PMIC_REG_KEY, 0x15); if (ret) goto read_err; ret = regmap_write(pf1550->regmap, PF1550_CHARG_REG_CHGR_KEY2, 0x50); if (ret) goto read_err; ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_KEY3, 0xAB); if (ret) goto read_err; ret = regmap_write(pf1550->regmap, PF1550_TEST_REG_FMRADDR, index); if (ret) goto read_err; ret = regmap_read(pf1550->regmap, PF1550_TEST_REG_FMRDATA, val); if (ret) goto read_err; return 0; read_err: dev_err(pf1550->dev, "read otp reg %x found!\n", index); return ret; } static int pf1550_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct pf1550_dev *pf1550; unsigned int reg_data = 0; int ret = 0; pf1550 = devm_kzalloc(&i2c->dev, sizeof(struct pf1550_dev), GFP_KERNEL); if (!pf1550) return -ENOMEM; i2c_set_clientdata(i2c, pf1550); pf1550->dev = &i2c->dev; pf1550->i2c = i2c; pf1550->irq = i2c->irq; pf1550->regmap = devm_regmap_init_i2c(i2c, &pf1550_regmap_config); if (IS_ERR(pf1550->regmap)) { ret = PTR_ERR(pf1550->regmap); dev_err(pf1550->dev, "failed to allocate register map: %d\n", ret); return ret; } ret = regmap_read(pf1550->regmap, PF1550_PMIC_REG_DEVICE_ID, ®_data); if (ret < 0 || reg_data != 0x7c) { dev_err(pf1550->dev, "device not found!\n"); return ret; } pf1550->type = PF1550; dev_info(pf1550->dev, "pf1550 found.\n"); ret = regmap_add_irq_chip(pf1550->regmap, pf1550->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &pf1550_regulator_irq_chip, &pf1550->irq_data_regulator); if (ret) { dev_err(pf1550->dev, "failed to add irq1 chip: %d\n", ret); goto err_regulator_irq; } ret = regmap_add_irq_chip(pf1550->regmap, pf1550->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &pf1550_onkey_irq_chip, &pf1550->irq_data_onkey); if (ret) { dev_err(pf1550->dev, "failed to add irq3 chip: %d\n", ret); goto err_onkey_irq; } ret = regmap_add_irq_chip(pf1550->regmap, pf1550->irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING, 0, &pf1550_charger_irq_chip, &pf1550->irq_data_charger); if (ret) { dev_err(pf1550->dev, "failed to add irq4 chip: %d\n", ret); goto err_charger_irq; } ret = mfd_add_devices(pf1550->dev, -1, pf1550_devs, ARRAY_SIZE(pf1550_devs), NULL, 0, NULL); if (ret < 0) goto err_mfd; return ret; err_mfd: mfd_remove_devices(pf1550->dev); err_charger_irq: regmap_del_irq_chip(pf1550->irq, pf1550->irq_data_charger); err_onkey_irq: regmap_del_irq_chip(pf1550->irq, pf1550->irq_data_regulator); err_regulator_irq: return ret; } static int pf1550_i2c_remove(struct i2c_client *i2c) { struct pf1550_dev *pf1550 = i2c_get_clientdata(i2c); mfd_remove_devices(pf1550->dev); regmap_del_irq_chip(pf1550->irq, pf1550->irq_data_regulator); regmap_del_irq_chip(pf1550->irq, pf1550->irq_data_onkey); regmap_del_irq_chip(pf1550->irq, pf1550->irq_data_charger); return 0; } static const struct i2c_device_id pf1550_i2c_id[] = { { "pf1550", PF1550 }, { } }; MODULE_DEVICE_TABLE(i2c, pf1550_i2c_id); static int pf1550_suspend(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct pf1550_dev *pf1550 = i2c_get_clientdata(i2c); if (device_may_wakeup(dev)) { enable_irq_wake(pf1550->irq); disable_irq(pf1550->irq); } return 0; } static int pf1550_resume(struct device *dev) { struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); struct pf1550_dev *pf1550 = i2c_get_clientdata(i2c); if (device_may_wakeup(dev)) { disable_irq_wake(pf1550->irq); enable_irq(pf1550->irq); } return 0; } static const struct dev_pm_ops pf1550_pm = { .suspend = pf1550_suspend, .resume = pf1550_resume, }; #ifdef CONFIG_OF static const struct of_device_id pf1550_dt_match[] = { { .compatible = "fsl,pf1550" }, {}, }; #endif static struct i2c_driver pf1550_i2c_driver = { .driver = { .name = "pf1550", .owner = THIS_MODULE, .pm = &pf1550_pm, .of_match_table = of_match_ptr(pf1550_dt_match), }, .probe = pf1550_i2c_probe, .remove = pf1550_i2c_remove, .id_table = pf1550_i2c_id, }; static int __init pf1550_i2c_init(void) { return i2c_add_driver(&pf1550_i2c_driver); } /* init early so consumer devices can complete system boot */ subsys_initcall(pf1550_i2c_init); static void __exit pf1550_i2c_exit(void) { i2c_del_driver(&pf1550_i2c_driver); } module_exit(pf1550_i2c_exit); MODULE_DESCRIPTION("Freescale PF1550 multi-function core driver"); MODULE_AUTHOR("Robin Gong "); MODULE_LICENSE("GPL");