/*
* Copyright (C) ST-Ericsson 2010 - 2013
* Author: Martin Persson <martin.persson@stericsson.com>
* Hongbo Zhang <hongbo.zhang@linaro.org>
* License Terms: GNU General Public License v2
*
* 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.
*/
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/workqueue.h>
#include "abx500.h"
#define DEFAULT_MONITOR_DELAY HZ
#define DEFAULT_MAX_TEMP 130
static inline void schedule_monitor(struct abx500_temp *data)
{
data->work_active = true;
schedule_delayed_work(&data->work, DEFAULT_MONITOR_DELAY);
}
static void threshold_updated(struct abx500_temp *data)
{
int i;
for (i = 0; i < data->monitored_sensors; i++)
if (data->max[i] != 0 || data->min[i] != 0) {
schedule_monitor(data);
return;
}
dev_dbg(&data->pdev->dev, "No active thresholds.\n");
cancel_delayed_work_sync(&data->work);
data->work_active = false;
}
static void gpadc_monitor(struct work_struct *work)
{
int temp, i, ret;
char alarm_node[30];
bool updated_min_alarm, updated_max_alarm;
struct abx500_temp *data;
data = container_of(work, struct abx500_temp, work.work);
mutex_lock(&data->lock);
for (i = 0; i < data->monitored_sensors; i++) {
/* Thresholds are considered inactive if set to 0 */
if (data->max[i] == 0 && data->min[i] == 0)
continue;
if (data->max[i] < data->min[i])
continue;
ret = data->ops.read_sensor(data, data->gpadc_addr[i], &temp);
if (ret < 0) {
dev_err(&data->pdev->dev, "GPADC read failed\n");
continue;
}
updated_min_alarm = false;
updated_max_alarm = false;
if (data->min[i] != 0) {
if (temp < data->min[i]) {
if (data->min_alarm[i] == false) {
data->min_alarm[i] = true;
updated_min_alarm = true;
}
} else {
if (data->min_alarm[i] == true) {
data->min_alarm[i] = false;
updated_min_alarm = true;
}
}
}
if (data->max[i] != 0) {
if (temp > data->max[i]) {
if (data->max_alarm[i] == false) {
data->max_alarm[i] = true;
updated_max_alarm = true;
}
} else if (temp < data->max[i] - data->max_hyst[i]) {
if (data->max_alarm[i] == true) {
data->max_alarm[i] = false;
updated_max_alarm = true;
}
}
}
if (updated_min_alarm) {
ret = sprintf(alarm_node, "temp%d_min_alarm", i + 1);
sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
}
if (updated_max_alarm) {
ret = sprintf(alarm_node, "temp%d_max_alarm", i + 1);
sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);
}
}
schedule_monitor(data);
mutex_unlock(&data->lock);
}
/* HWMON sysfs interfaces */
static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct abx500_temp *data = dev_get_drvdata(dev);
/* Show chip name */
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);
/* Show each sensor label */
return data->ops.show_label(dev, devattr, buf);
}
static ssize_t show_input(struct device *dev,
struct device_attribute *devattr, char *buf)
{
int ret, temp;
struct abx500_temp *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
u8 gpadc_addr = data->gpadc_addr[attr->index];
ret = data->ops.read_sensor(data, gpadc_addr, &temp);
if (ret < 0)
return ret;
return sprintf(buf, "%d\n", temp);
}
/* 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 = kstrtol(buf, 10, &val);
if (res < 0)
return res;
val = clamp_val(val, 0, DEFAULT_MAX_TEMP);
mutex_lock(&data->lock);
data->min[attr->index] = val;
threshold_updated(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 = kstrtol(buf, 10, &val);
if (res < 0)
return res;
val = clamp_val(val, 0, DEFAULT_MAX_TEMP);
mutex_lock(&data->lock);
data->max[attr->index] = val;
threshold_updated(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 abx<style>.highlight .hll { background-color: #ffffcc }
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span>From: Fuel OPNFV <fuel@opnfv.org>
Date: Mon, 13 Jun 2016 22:23:57 +0200
Subject: [PATCH] OPNFV: showmenu=yes in isolinux.cfg
<span class="gd">---</span>
iso/isolinux/isolinux.cfg | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
<span class="gh">diff --git a/iso/isolinux/isolinux.cfg b/iso/isolinux/isolinux.cfg</span>
<span class="gh">index c6b1ed9..77a4b18 100644</span>
<span class="gd">--- a/iso/isolinux/isolinux.cfg</span>
<span class="gi">+++ b/iso/isolinux/isolinux.cfg</span>
<span class="gu">@@ -19,9 +19,9 @@ label nailgun</span>
menu label ^1. Fuel Install (Static IP)
menu default
kernel vmlinuz
<span class="gd">- append initrd=initrd.img net.ifnames=0 biosdevname=0 inst.repo=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ inst.ks=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ks.cfg ip=10.20.0.2::10.20.0.1:255.255.255.0:fuel.domain.tld:eth0:off::: nameserver=10.20.0.1</span>
<span class="gi">+ append initrd=initrd.img net.ifnames=0 biosdevname=0 inst.repo=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ inst.ks=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ks.cfg ip=10.20.0.2::10.20.0.1:255.255.255.0:fuel.domain.tld:eth0:off::: nameserver=10.20.0.1 showmenu=yes</span>
label nailgunifname
menu label ^2. Fuel Advanced Install (Static IP)
kernel vmlinuz
<span class="gd">- append initrd=initrd.img inst.repo=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ inst.ks=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ks.cfg ip=10.20.0.2::10.20.0.1:255.255.255.0:fuel.domain.tld:adminif:off::: nameserver=10.20.0.1 ifname=adminif:XX:XX:XX:XX:XX:XX</span>
<span class="gi">+ append initrd=initrd.img inst.repo=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ inst.ks=cdrom:LABEL=will_be_substituted_with_ISO_VOLUME_ID:/ks.cfg ip=10.20.0.2::10.20.0.1:255.255.255.0:fuel.domain.tld:adminif:off::: nameserver=10.20.0.1 ifname=adminif:XX:XX:XX:XX:XX:XX showmenu=yes</span>
</pre></div>
</code></pre></td></tr></table>
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bj, &abx500_temp_group);
return 0;
}
static int abx500_temp_suspend(struct platform_device *pdev,
pm_message_t state)
{
struct abx500_temp *data = platform_get_drvdata(pdev);
if (data->work_active)
cancel_delayed_work_sync(&data->work);
return 0;
}
static int abx500_temp_resume(struct platform_device *pdev)
{
struct abx500_temp *data = platform_get_drvdata(pdev);
if (data->work_active)
schedule_monitor(data);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id abx500_temp_match[] = {
{ .compatible = "stericsson,abx500-temp" },
{},
};
MODULE_DEVICE_TABLE(of, abx500_temp_match);
#endif
static struct platform_driver abx500_temp_driver = {
.driver = {
.name = "abx500-temp",
.of_match_table = of_match_ptr(abx500_temp_match),
},
.suspend = abx500_temp_suspend,
.resume = abx500_temp_resume,
.probe = abx500_temp_probe,
.remove = abx500_temp_remove,
};
module_platform_driver(abx500_temp_driver);
MODULE_AUTHOR("Martin Persson <martin.persson@stericsson.com>");
MODULE_DESCRIPTION("ABX500 temperature driver");
MODULE_LICENSE("GPL");