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-rw-r--r--drivers/mfd/da9063-core.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/mfd/da9063-core.c b/drivers/mfd/da9063-core.c
new file mode 100644
index 000000000..df407c3af
--- /dev/null
+++ b/drivers/mfd/da9063-core.c
@@ -0,0 +1,206 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * 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
+ *
+ */
+
+#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/registers.h>
+
+#include <linux/proc_fs.h>
+#include <linux/kthread.h>
+#include <linux/uaccess.h>
+
+
+static const struct resource da9063_regulators_resources[] = {
+ {
+ .name = "LDO_LIM",
+ .start = DA9063_IRQ_LDO_LIM,
+ .end = DA9063_IRQ_LDO_LIM,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static const 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 const struct resource da9063_onkey_resources[] = {
+ {
+ .name = "ONKEY",
+ .start = DA9063_IRQ_ONKEY,
+ .end = DA9063_IRQ_ONKEY,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static const 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)
+{
+ int ret;
+
+ ret = da9063_clear_fault_log(da9063);
+ if (ret < 0)
+ dev_err(da9063->dev, "Cannot clear fault log\n");
+
+ da9063->flags = 0;
+ da9063->irq_base = -1;
+ da9063->chip_irq = irq;
+
+ 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");