/* * da9063-core.c: Device access for Dialog DA9063 modules * * Copyright 2012 Dialog Semiconductors Ltd. * Copyright 2013 Philipp Zabel, Pengutronix * * Author: Krystian Garbaciak, Dialog Semiconductor * Author: Michal Hajduk, Dialog Semiconductor * * 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. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/device.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/mutex.h> #include <linux/mfd/core.h> #include <linux/regmap.h> #include <linux/mfd/da9063/core.h> #include <linux/mfd/da9063/pdata.h> #include <linux/mfd/da9063/registers.h> #include <linux/proc_fs.h> #include <linux/kthread.h> #include <linux/uaccess.h> static struct resource da9063_regulators_resources[] = { { .name = "LDO_LIM", .start = DA9063_IRQ_LDO_LIM, .end = DA9063_IRQ_LDO_LIM, .flags = IORESOURCE_IRQ, }, }; static struct resource da9063_rtc_resources[] = { { .name = "ALARM", .start = DA9063_IRQ_ALARM, .end = DA9063_IRQ_ALARM, .flags = IORESOURCE_IRQ, }, { .name = "TICK", .start = DA9063_IRQ_TICK, .end = DA9063_IRQ_TICK, .flags = IORESOURCE_IRQ, } }; static struct resource da9063_onkey_resources[] = { { .name = "ONKEY", .start = DA9063_IRQ_ONKEY, .end = DA9063_IRQ_ONKEY, .flags = IORESOURCE_IRQ, }, }; static struct resource da9063_hwmon_resources[] = { { .start = DA9063_IRQ_ADC_RDY, .end = DA9063_IRQ_ADC_RDY, .flags = IORESOURCE_IRQ, }, }; static const struct mfd_cell da9063_common_devs[] = { { .name = DA9063_DRVNAME_REGULATORS, .num_resources = ARRAY_SIZE(da9063_regulators_resources), .resources = da9063_regulators_resources, }, { .name = DA9063_DRVNAME_LEDS, }, { .name = DA9063_DRVNAME_WATCHDOG, .of_compatible = "dlg,da9063-watchdog", }, { .name = DA9063_DRVNAME_HWMON, .num_resources = ARRAY_SIZE(da9063_hwmon_resources), .resources = da9063_hwmon_resources, }, { .name = DA9063_DRVNAME_ONKEY, .num_resources = ARRAY_SIZE(da9063_onkey_resources), .resources = da9063_onkey_resources, .of_compatible = "dlg,da9063-onkey", }, { .name = DA9063_DRVNAME_VIBRATION, }, }; /* Only present on DA9063 , not on DA9063L */ static const struct mfd_cell da9063_devs[] = { { .name = DA9063_DRVNAME_RTC, .num_resources = ARRAY_SIZE(da9063_rtc_resources), .resources = da9063_rtc_resources, .of_compatible = "dlg,da9063-rtc", }, }; static int da9063_clear_fault_log(struct da9063 *da9063) { int ret = 0; int fault_log = 0; ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); if (ret < 0) { dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); return -EIO; } if (fault_log) { if (fault_log & DA9063_TWD_ERROR) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_TWD_ERROR\n"); if (fault_log & DA9063_POR) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_POR\n"); if (fault_log & DA9063_VDD_FAULT) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_VDD_FAULT\n"); if (fault_log & DA9063_VDD_START) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_VDD_START\n"); if (fault_log & DA9063_TEMP_CRIT) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_TEMP_CRIT\n"); if (fault_log & DA9063_KEY_RESET) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_KEY_RESET\n"); if (fault_log & DA9063_NSHUTDOWN) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_NSHUTDOWN\n"); if (fault_log & DA9063_WAIT_SHUT) dev_dbg(da9063->dev, "Fault log entry detected: DA9063_WAIT_SHUT\n"); } ret = regmap_write(da9063->regmap, DA9063_REG_FAULT_LOG, fault_log); if (ret < 0) dev_err(da9063->dev, "Cannot reset FAULT_LOG values %d\n", ret); return ret; } int da9063_device_init(struct da9063 *da9063, unsigned int irq) { struct da9063_pdata *pdata = da9063->dev->platform_data; int model, variant_id, variant_code; int ret; ret = da9063_clear_fault_log(da9063); if (ret < 0) dev_err(da9063->dev, "Cannot clear fault log\n"); if (pdata) { da9063->flags = pdata->flags; da9063->irq_base = pdata->irq_base; } else { da9063->flags = 0; da9063->irq_base = -1; } da9063->chip_irq = irq; if (pdata && pdata->init != NULL) { ret = pdata->init(da9063); if (ret != 0) { dev_err(da9063->dev, "Platform initialization failed.\n"); return ret; } } ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model); if (ret < 0) { dev_err(da9063->dev, "Cannot read chip model id.\n"); return -EIO; } if (model != PMIC_CHIP_ID_DA9063) { dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model); return -ENODEV; } ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id); if (ret < 0) { dev_err(da9063->dev, "Cannot read chip variant id.\n"); return -EIO; } variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT; dev_info(da9063->dev, "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n", model, variant_id); if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) { dev_err(da9063->dev, "Cannot support variant code: 0x%02X\n", variant_code); return -ENODEV; } da9063->variant_code = variant_code; ret = da9063_irq_init(da9063); if (ret) { dev_err(da9063->dev, "Cannot initialize interrupts.\n"); return ret; } da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, da9063_common_devs, ARRAY_SIZE(da9063_common_devs), NULL, da9063->irq_base, NULL); if (ret) { dev_err(da9063->dev, "Failed to add child devices\n"); return ret; } if (da9063->type == PMIC_TYPE_DA9063) { ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, da9063_devs, ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base, NULL); if (ret) { dev_err(da9063->dev, "Failed to add child devices\n"); return ret; } } return ret; } MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); MODULE_AUTHOR("Krystian Garbaciak"); MODULE_AUTHOR("Michal Hajduk"); MODULE_LICENSE("GPL");