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path: root/drivers/hwmon/abx500.c
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Diffstat (limited to 'drivers/hwmon/abx500.c')
-rw-r--r--drivers/hwmon/abx500.c698
1 files changed, 698 insertions, 0 deletions
diff --git a/drivers/hwmon/abx500.c b/drivers/hwmon/abx500.c
new file mode 100644
index 00000000000..7aa9994c54a
--- /dev/null
+++ b/drivers/hwmon/abx500.c
@@ -0,0 +1,698 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Martin Persson <martin.persson@stericsson.com> for
+ * ST-Ericsson.
+ * License terms: GNU Gereral Public License (GPL) version 2
+ *
+ * Note:
+ *
+ * ABX500 does not provide auto ADC, so to monitor the required
+ * temperatures, a periodic work is used. It is more important
+ * to not wake up the CPU than to perform this job, hence the use
+ * of a deferred delay.
+ *
+ * A deferred delay for thermal monitor is considered safe because:
+ * If the chip gets too hot during a sleep state it's most likely
+ * due to external factors, such as the surrounding temperature.
+ * I.e. no SW decisions will make any difference.
+ *
+ * If/when the ABX500 thermal warning temperature is reached (threshold
+ * cannot be changed by SW), an interrupt is set and the driver
+ * notifies user space via a sysfs event.
+ *
+ * If/when ABX500 thermal shutdown temperature is reached a hardware
+ * shutdown of the ABX500 will occur.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/hwmon.h>
+#include <linux/sysfs.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/jiffies.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <asm/mach-types.h>
+
+#include "abx500.h"
+
+#define DEFAULT_MONITOR_DELAY 1000
+
+/*
+ * Thresholds are considered inactive if set to 0.
+ * To avoid confusion for user space applications,
+ * the temp monitor delay is set to 0 if all thresholds
+ * are 0.
+ */
+static bool find_active_thresholds(struct abx500_temp *data)
+{
+ int i;
+ for (i = 0; i < data->monitored_sensors; i++)
+ if (data->max[i] != 0 || data->max_hyst[i] != 0
+ || data->min[i] != 0)
+ return true;
+
+ dev_dbg(&data->pdev->dev, "No active thresholds,"
+ "cancel deferred job (if it exists)"
+ "and reset temp monitor delay\n");
+ cancel_delayed_work_sync(&data->work);
+ return false;
+}
+
+static inline void schedule_monitor(struct abx500_temp *data)
+{
+ unsigned long delay_in_jiffies;
+ delay_in_jiffies = msecs_to_jiffies(data->gpadc_monitor_delay);
+ schedule_delayed_work(&data->work, delay_in_jiffies);
+}
+
+static inline void gpadc_monitor_exit(struct abx500_temp *data)
+{
+ cancel_delayed_work_sync(&data->work);
+}
+
+static void gpadc_monitor(struct work_struct *work)
+{
+ unsigned long delay_in_jiffies;
+ int val, i, ret;
+ /* Container for alarm node name */
+ char alarm_node[30];
+
+ bool updated_min_alarm = false;
+ bool updated_max_alarm = false;
+ bool updated_max_hyst_alarm = false;
+ struct abx500_temp *data = container_of(work, struct abx500_temp,
+ work.work);
+
+ for (i = 0; i < data->monitored_sensors; i++) {
+ /* Thresholds are considered inactive if set to 0 */
+ if (data->max[i] == 0 && data->max_hyst[i] == 0
+ && data->min[i] == 0)
+ continue;
+
+ val = data->ops.read_sensor(data, data->gpadc_addr[i]);
+ if (val < 0) {
+ dev_err(&data->pdev->dev, "GPADC read failed\n");
+ continue;
+ }
+
+ mutex_lock(&data->lock);
+ if (data->min[i] != 0) {
+ if (val < data->min[i]) {
+ if (data->min_alarm[i] == 0) {
+ data->min_alarm[i] = 1;
+ updated_min_alarm = true;
+ }
+ } else {
+ if (data->min_alarm[i] == 1) {
+ data->min_alarm[i] = 0;
+ updated_min_alarm = true;
+ }
+ }
+
+ }
+ if (data->max[i] != 0) {
+ if (val > data->max[i]) {
+ if (data->max_alarm[i] == 0) {
+ data->max_alarm[i] = 1;
+ updated_max_alarm = true;
+ }
+ } else {
+ if (data->max_alarm[i] == 1) {
+ data->max_alarm[i] = 0;
+ updated_max_alarm = true;
+ }
+ }
+
+ }
+ if (data->max_hyst[i] != 0) {
+ if (val > data->max_hyst[i]) {
+ if (data->max_hyst_alarm[i] == 0) {
+ data->max_hyst_alarm[i] = 1;
+ updated_max_hyst_alarm = true;
+ }
+ } else {
+ if (data->max_hyst_alarm[i] == 1) {
+ data->max_hyst_alarm[i] = 0;
+ updated_max_hyst_alarm = true;
+ }
+ }
+ }
+ mutex_unlock(&data->lock);
+
+ /* hwmon attr index starts at 1, thus "i+1" below */
+ if (updated_min_alarm) {
+ ret = snprintf(alarm_node, 16, "temp%d_min_alarm",
+ (i + 1));
+ if (ret < 0) {
+ dev_err(&data->pdev->dev,
+ "Unable to update alarm node (%d)",
+ ret);
+ break;
+ }
+ sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
+ }
+ if (updated_max_alarm) {
+ ret = snprintf(alarm_node, 16, "temp%d_max_alarm",
+ (i + 1));
+ if (ret < 0) {
+ dev_err(&data->pdev->dev,
+ "Unable to update alarm node (%d)",
+ ret);
+ break;
+ }
+ hwmon_notify(data->max_alarm[i], NULL);
+ sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
+ }
+ if (updated_max_hyst_alarm) {
+ ret = snprintf(alarm_node, 21, "temp%d_max_hyst_alarm",
+ (i + 1));
+ if (ret < 0) {
+ dev_err(&data->pdev->dev,
+ "Unable to update alarm node (%d)",
+ ret);
+ break;
+ }
+ sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
+ }
+ }
+ delay_in_jiffies = msecs_to_jiffies(data->gpadc_monitor_delay);
+ schedule_delayed_work(&data->work, delay_in_jiffies);
+}
+
+static ssize_t set_temp_monitor_delay(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ int res;
+ unsigned long delay_in_s;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+
+ res = strict_strtoul(buf, 10, &delay_in_s);
+ if (res < 0)
+ return res;
+
+ mutex_lock(&data->lock);
+ data->gpadc_monitor_delay = delay_in_s * 1000;
+
+ if (find_active_thresholds(data))
+ schedule_monitor(data);
+
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t set_temp_power_off_delay(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ int res;
+ unsigned long delay_in_s;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+
+ res = strict_strtoul(buf, 10, &delay_in_s);
+ if (res < 0)
+ return res;
+
+ mutex_lock(&data->lock);
+ data->power_off_delay = delay_in_s * 1000;
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t show_temp_monitor_delay(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ /* return time in s, not ms */
+ return sprintf(buf, "%lu\n", (data->gpadc_monitor_delay) / 1000);
+}
+
+static ssize_t show_temp_power_off_delay(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ /* return time in s, not ms */
+ return sprintf(buf, "%lu\n", (data->power_off_delay) / 1000);
+}
+
+/* HWMON sysfs interface */
+static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ /*
+ * To avoid confusion between sensor label and chip name, the function
+ * "show_label" is not used to return the chip name.
+ */
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ return data->ops.show_name(dev, devattr, buf);
+}
+
+static ssize_t show_label(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ return data->ops.show_label(dev, devattr, buf);
+}
+
+static ssize_t show_input(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ int val;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ u8 gpadc_addr = data->gpadc_addr[attr->index - 1];
+
+ val = data->ops.read_sensor(data, gpadc_addr);
+ if (val < 0)
+ dev_err(&data->pdev->dev, "GPADC read failed\n");
+
+ return sprintf(buf, "%d\n", val);
+}
+
+/* set functions (RW nodes) */
+static ssize_t set_min(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ unsigned long val;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ int res = strict_strtoul(buf, 10, &val);
+ if (res < 0)
+ return res;
+
+ mutex_lock(&data->lock);
+ /*
+ * Threshold is considered inactive if set to 0
+ * hwmon attr index starts at 1, thus "attr->index-1" below
+ */
+ if (val == 0)
+ data->min_alarm[attr->index - 1] = 0;
+
+ data->min[attr->index - 1] = val;
+
+ if (val == 0)
+ (void) find_active_thresholds(data);
+ else
+ schedule_monitor(data);
+
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ unsigned long val;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ int res = strict_strtoul(buf, 10, &val);
+ if (res < 0)
+ return res;
+
+ mutex_lock(&data->lock);
+ /*
+ * Threshold is considered inactive if set to 0
+ * hwmon attr index starts at 1, thus "attr->index-1" below
+ */
+ if (val == 0)
+ data->max_alarm[attr->index - 1] = 0;
+
+ data->max[attr->index - 1] = val;
+
+ if (val == 0)
+ (void) find_active_thresholds(data);
+ else
+ schedule_monitor(data);
+
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t set_max_hyst(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ unsigned long val;
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ int res = strict_strtoul(buf, 10, &val);
+ if (res < 0)
+ return res;
+
+ mutex_lock(&data->lock);
+ /*
+ * Threshold is considered inactive if set to 0
+ * hwmon attr index starts at 1, thus "attr->index-1" below
+ */
+ if (val == 0)
+ data->max_hyst_alarm[attr->index - 1] = 0;
+
+ data->max_hyst[attr->index - 1] = val;
+
+ if (val == 0)
+ (void) find_active_thresholds(data);
+ else
+ schedule_monitor(data);
+
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+/*
+ * show functions (RO nodes)
+ */
+static ssize_t show_min(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->min[attr->index - 1]);
+}
+
+static ssize_t show_max(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->max[attr->index - 1]);
+}
+
+static ssize_t show_max_hyst(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->max_hyst[attr->index - 1]);
+}
+
+/* Alarms */
+static ssize_t show_min_alarm(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->min_alarm[attr->index - 1]);
+}
+
+static ssize_t show_max_alarm(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->max_alarm[attr->index - 1]);
+}
+
+static ssize_t show_max_hyst_alarm(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->max_hyst_alarm[attr->index - 1]);
+}
+
+static ssize_t show_crit_alarm(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ /* hwmon attr index starts at 1, thus "attr->index-1" below */
+ return sprintf(buf, "%ld\n", data->crit_alarm[attr->index - 1]);
+}
+
+static mode_t abx500_attrs_visible(struct kobject *kobj,
+ struct attribute *a, int n)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct abx500_temp *data = dev_get_drvdata(dev);
+ return data->ops.is_visible(a, n);
+}
+
+static SENSOR_DEVICE_ATTR(temp_monitor_delay, S_IRUGO | S_IWUSR,
+ show_temp_monitor_delay, set_temp_monitor_delay, 0);
+static SENSOR_DEVICE_ATTR(temp_power_off_delay, S_IRUGO | S_IWUSR,
+ show_temp_power_off_delay,
+ set_temp_power_off_delay, 0);
+
+/* Chip name, required by hwmon*/
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
+
+/* GPADC - SENSOR1 */
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_input, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_min, set_min, 1);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_max, set_max, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+ show_max_hyst, set_max_hyst, 1);
+static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_min_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_max_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst_alarm, S_IRUGO,
+ show_max_hyst_alarm, NULL, 1);
+
+/* GPADC - SENSOR2 */
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_label, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_input, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_min, set_min, 2);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_max, set_max, 2);
+static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IWUSR | S_IRUGO,
+ show_max_hyst, set_max_hyst, 2);
+static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_min_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_max_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_max_hyst_alarm, S_IRUGO,
+ show_max_hyst_alarm, NULL, 2);
+
+/* GPADC - SENSOR3 */
+static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_label, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_input, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_min, set_min, 3);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max, 3);
+static SENSOR_DEVICE_ATTR(temp3_max_hyst, S_IWUSR | S_IRUGO,
+ show_max_hyst, set_max_hyst, 3);
+static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_min_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_max_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp3_max_hyst_alarm, S_IRUGO,
+ show_max_hyst_alarm, NULL, 3);
+
+/* GPADC - SENSOR4 */
+static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_label, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_input, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_min, set_min, 4);
+static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_max, set_max, 4);
+static SENSOR_DEVICE_ATTR(temp4_max_hyst, S_IWUSR | S_IRUGO,
+ show_max_hyst, set_max_hyst, 4);
+static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO, show_min_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_max_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp4_max_hyst_alarm, S_IRUGO,
+ show_max_hyst_alarm, NULL, 4);
+
+/* GPADC - SENSOR5 */
+static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, show_label, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_input, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_min, set_min, 5);
+static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_max, set_max, 5);
+static SENSOR_DEVICE_ATTR(temp5_max_hyst, S_IWUSR | S_IRUGO,
+ show_max_hyst, set_max_hyst, 5);
+static SENSOR_DEVICE_ATTR(temp5_min_alarm, S_IRUGO, show_min_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO, show_max_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp5_max_hyst_alarm, S_IRUGO,
+ show_max_hyst_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp5_crit_alarm, S_IRUGO,
+ show_crit_alarm, NULL, 5);
+
+struct attribute *abx500_temp_attributes[] = {
+ &sensor_dev_attr_name.dev_attr.attr,
+ &sensor_dev_attr_temp_monitor_delay.dev_attr.attr,
+ &sensor_dev_attr_temp_power_off_delay.dev_attr.attr,
+ /* GPADC SENSOR1 */
+ &sensor_dev_attr_temp1_label.dev_attr.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst_alarm.dev_attr.attr,
+ /* GPADC SENSOR2 */
+ &sensor_dev_attr_temp2_label.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_hyst_alarm.dev_attr.attr,
+ /* GPADC SENSOR3 */
+ &sensor_dev_attr_temp3_label.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_hyst_alarm.dev_attr.attr,
+ /* GPADC SENSOR4 */
+ &sensor_dev_attr_temp4_label.dev_attr.attr,
+ &sensor_dev_attr_temp4_input.dev_attr.attr,
+ &sensor_dev_attr_temp4_min.dev_attr.attr,
+ &sensor_dev_attr_temp4_max.dev_attr.attr,
+ &sensor_dev_attr_temp4_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_max_hyst_alarm.dev_attr.attr,
+ /* GPADC SENSOR5*/
+ &sensor_dev_attr_temp5_label.dev_attr.attr,
+ &sensor_dev_attr_temp5_input.dev_attr.attr,
+ &sensor_dev_attr_temp5_min.dev_attr.attr,
+ &sensor_dev_attr_temp5_max.dev_attr.attr,
+ &sensor_dev_attr_temp5_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp5_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_max_hyst_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group abx500_temp_group = {
+ .attrs = abx500_temp_attributes,
+ .is_visible = abx500_attrs_visible,
+};
+
+static irqreturn_t abx500_temp_irq_handler(int irq, void *irq_data)
+{
+ struct platform_device *pdev = irq_data;
+ struct abx500_temp *data = platform_get_drvdata(pdev);
+ data->ops.irq_handler(irq, data);
+ return IRQ_HANDLED;
+}
+
+static int setup_irqs(struct platform_device *pdev)
+{
+ int ret;
+ int irq = platform_get_irq_byname(pdev, "ABX500_TEMP_WARM");
+
+ if (irq < 0)
+ dev_err(&pdev->dev, "Get irq by name failed\n");
+
+ ret = request_threaded_irq(irq, NULL, abx500_temp_irq_handler,
+ IRQF_NO_SUSPEND, "abx500-temp", pdev);
+ if (ret < 0)
+ dev_err(&pdev->dev, "Request threaded irq failed (%d)\n", ret);
+
+ return ret;
+}
+
+static int __devinit abx500_temp_probe(struct platform_device *pdev)
+{
+ struct abx500_temp *data;
+ int err;
+
+ data = kzalloc(sizeof(struct abx500_temp), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->pdev = pdev;
+ mutex_init(&data->lock);
+
+ /* Chip specific initialization */
+ if (!machine_is_u5500())
+ err = ab8500_hwmon_init(data);
+ else
+ err = ab5500_hwmon_init(data);
+ if (err < 0) {
+ dev_err(&pdev->dev, "abx500 init failed");
+ goto exit;
+ }
+
+ data->hwmon_dev = hwmon_device_register(&pdev->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
+ goto exit;
+ }
+
+ INIT_DELAYED_WORK_DEFERRABLE(&data->work, gpadc_monitor);
+ data->gpadc_monitor_delay = DEFAULT_MONITOR_DELAY;
+
+ platform_set_drvdata(pdev, data);
+
+ err = sysfs_create_group(&pdev->dev.kobj, &abx500_temp_group);
+ if (err < 0) {
+ dev_err(&pdev->dev, "Create sysfs group failed (%d)\n", err);
+ goto exit_platform_data;
+ }
+
+ err = setup_irqs(pdev);
+ if (err < 0) {
+ dev_err(&pdev->dev, "irq setup failed (%d)\n", err);
+ goto exit_sysfs_group;
+ }
+ return 0;
+
+exit_sysfs_group:
+ sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);
+exit_platform_data:
+ hwmon_device_unregister(data->hwmon_dev);
+ platform_set_drvdata(pdev, NULL);
+exit:
+ kfree(data->gpadc_auto);
+ kfree(data);
+ return err;
+}
+
+static int __devexit abx500_temp_remove(struct platform_device *pdev)
+{
+ struct abx500_temp *data = platform_get_drvdata(pdev);
+
+ gpadc_monitor_exit(data);
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);
+ platform_set_drvdata(pdev, NULL);
+ kfree(data->gpadc_auto);
+ kfree(data);
+ return 0;
+}
+
+/* No action required in suspend/resume, thus the lack of functions */
+static struct platform_driver abx500_temp_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "abx500-temp",
+ },
+ .probe = abx500_temp_probe,
+ .remove = __devexit_p(abx500_temp_remove),
+};
+
+static int __init abx500_temp_init(void)
+{
+ return platform_driver_register(&abx500_temp_driver);
+}
+
+static void __exit abx500_temp_exit(void)
+{
+ platform_driver_unregister(&abx500_temp_driver);
+}
+
+MODULE_AUTHOR("Martin Persson <martin.persson@stericsson.com>");
+MODULE_DESCRIPTION("ABX500 temperature driver");
+MODULE_LICENSE("GPL");
+
+module_init(abx500_temp_init)
+module_exit(abx500_temp_exit)
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-15 21:02:52 +0000