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206 lines
4.8 KiB
206 lines
4.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Device access for Dialog DA9063 modules |
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* |
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* Copyright 2012 Dialog Semiconductors Ltd. |
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* Copyright 2013 Philipp Zabel, Pengutronix |
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* |
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* Author: Krystian Garbaciak, Dialog Semiconductor |
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* Author: Michal Hajduk, Dialog Semiconductor |
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* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/device.h> |
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#include <linux/delay.h> |
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#include <linux/interrupt.h> |
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#include <linux/mutex.h> |
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#include <linux/mfd/core.h> |
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#include <linux/regmap.h> |
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#include <linux/mfd/da9063/core.h> |
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#include <linux/mfd/da9063/registers.h> |
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#include <linux/proc_fs.h> |
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#include <linux/kthread.h> |
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#include <linux/uaccess.h> |
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static const struct resource da9063_regulators_resources[] = { |
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{ |
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.name = "LDO_LIM", |
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.start = DA9063_IRQ_LDO_LIM, |
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.end = DA9063_IRQ_LDO_LIM, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static const struct resource da9063_rtc_resources[] = { |
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{ |
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.name = "ALARM", |
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.start = DA9063_IRQ_ALARM, |
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.end = DA9063_IRQ_ALARM, |
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.flags = IORESOURCE_IRQ, |
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}, |
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{ |
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.name = "TICK", |
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.start = DA9063_IRQ_TICK, |
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.end = DA9063_IRQ_TICK, |
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.flags = IORESOURCE_IRQ, |
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} |
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}; |
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static const struct resource da9063_onkey_resources[] = { |
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{ |
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.name = "ONKEY", |
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.start = DA9063_IRQ_ONKEY, |
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.end = DA9063_IRQ_ONKEY, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static const struct resource da9063_hwmon_resources[] = { |
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{ |
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.start = DA9063_IRQ_ADC_RDY, |
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.end = DA9063_IRQ_ADC_RDY, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static const struct mfd_cell da9063_common_devs[] = { |
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{ |
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.name = DA9063_DRVNAME_REGULATORS, |
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.num_resources = ARRAY_SIZE(da9063_regulators_resources), |
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.resources = da9063_regulators_resources, |
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}, |
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{ |
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.name = DA9063_DRVNAME_LEDS, |
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}, |
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{ |
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.name = DA9063_DRVNAME_WATCHDOG, |
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.of_compatible = "dlg,da9063-watchdog", |
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}, |
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{ |
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.name = DA9063_DRVNAME_HWMON, |
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.num_resources = ARRAY_SIZE(da9063_hwmon_resources), |
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.resources = da9063_hwmon_resources, |
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}, |
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{ |
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.name = DA9063_DRVNAME_ONKEY, |
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.num_resources = ARRAY_SIZE(da9063_onkey_resources), |
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.resources = da9063_onkey_resources, |
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.of_compatible = "dlg,da9063-onkey", |
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}, |
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{ |
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.name = DA9063_DRVNAME_VIBRATION, |
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}, |
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}; |
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/* Only present on DA9063 , not on DA9063L */ |
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static const struct mfd_cell da9063_devs[] = { |
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{ |
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.name = DA9063_DRVNAME_RTC, |
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.num_resources = ARRAY_SIZE(da9063_rtc_resources), |
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.resources = da9063_rtc_resources, |
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.of_compatible = "dlg,da9063-rtc", |
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}, |
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}; |
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static int da9063_clear_fault_log(struct da9063 *da9063) |
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{ |
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int ret = 0; |
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int fault_log = 0; |
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ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); |
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if (ret < 0) { |
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dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); |
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return -EIO; |
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} |
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if (fault_log) { |
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if (fault_log & DA9063_TWD_ERROR) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_TWD_ERROR\n"); |
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if (fault_log & DA9063_POR) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_POR\n"); |
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if (fault_log & DA9063_VDD_FAULT) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_VDD_FAULT\n"); |
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if (fault_log & DA9063_VDD_START) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_VDD_START\n"); |
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if (fault_log & DA9063_TEMP_CRIT) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_TEMP_CRIT\n"); |
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if (fault_log & DA9063_KEY_RESET) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_KEY_RESET\n"); |
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if (fault_log & DA9063_NSHUTDOWN) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_NSHUTDOWN\n"); |
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if (fault_log & DA9063_WAIT_SHUT) |
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dev_dbg(da9063->dev, |
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"Fault log entry detected: DA9063_WAIT_SHUT\n"); |
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} |
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ret = regmap_write(da9063->regmap, |
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DA9063_REG_FAULT_LOG, |
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fault_log); |
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if (ret < 0) |
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dev_err(da9063->dev, |
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"Cannot reset FAULT_LOG values %d\n", ret); |
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return ret; |
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} |
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int da9063_device_init(struct da9063 *da9063, unsigned int irq) |
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{ |
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int ret; |
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ret = da9063_clear_fault_log(da9063); |
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if (ret < 0) |
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dev_err(da9063->dev, "Cannot clear fault log\n"); |
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da9063->flags = 0; |
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da9063->irq_base = -1; |
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da9063->chip_irq = irq; |
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ret = da9063_irq_init(da9063); |
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if (ret) { |
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dev_err(da9063->dev, "Cannot initialize interrupts.\n"); |
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return ret; |
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} |
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da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); |
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ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, |
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da9063_common_devs, |
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ARRAY_SIZE(da9063_common_devs), |
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NULL, da9063->irq_base, NULL); |
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if (ret) { |
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dev_err(da9063->dev, "Failed to add child devices\n"); |
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return ret; |
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} |
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if (da9063->type == PMIC_TYPE_DA9063) { |
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ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, |
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da9063_devs, ARRAY_SIZE(da9063_devs), |
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NULL, da9063->irq_base, NULL); |
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if (ret) { |
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dev_err(da9063->dev, "Failed to add child devices\n"); |
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return ret; |
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} |
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} |
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return ret; |
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} |
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MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); |
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MODULE_AUTHOR("Krystian Garbaciak"); |
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MODULE_AUTHOR("Michal Hajduk"); |
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MODULE_LICENSE("GPL");
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