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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2014-12-23 15:29:57 -0800
committerZhang Rui <rui.zhang@intel.com>2015-01-20 09:30:34 +0800
commitacebf7eea449f8e18f443804f1f20bc090f22d0a (patch)
tree416de5c974ca6b693273c7d66929a657bd31af50 /drivers/thermal
parent1c55be020806eeffbda6f1a981511e46427eb4ec (diff)
downloadlinux-acebf7eea449f8e18f443804f1f20bc090f22d0a.tar.bz2
Thermal/int340x/int3402: Provide notification support
This driver supports programmable trips, but didn't register notification handler to receive threshold violation notification. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/int340x_thermal/int3402_thermal.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/thermal/int340x_thermal/int3402_thermal.c b/drivers/thermal/int340x_thermal/int3402_thermal.c
index 7ffc749ce0f2..69df3d960303 100644
--- a/drivers/thermal/int340x_thermal/int3402_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3402_thermal.c
@@ -16,15 +16,37 @@
#include <linux/thermal.h>
#include "int340x_thermal_zone.h"
+#define INT3402_PERF_CHANGED_EVENT 0x80
+#define INT3402_THERMAL_EVENT 0x90
+
struct int3402_thermal_data {
acpi_handle *handle;
struct int34x_thermal_zone *int340x_zone;
};
+static void int3402_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct int3402_thermal_data *priv = data;
+
+ if (!priv)
+ return;
+
+ switch (event) {
+ case INT3402_PERF_CHANGED_EVENT:
+ break;
+ case INT3402_THERMAL_EVENT:
+ int340x_thermal_zone_device_update(priv->int340x_zone);
+ break;
+ default:
+ break;
+ }
+}
+
static int int3402_thermal_probe(struct platform_device *pdev)
{
struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
struct int3402_thermal_data *d;
+ int ret;
if (!acpi_has_method(adev->handle, "_TMP"))
return -ENODEV;
@@ -37,6 +59,15 @@ static int int3402_thermal_probe(struct platform_device *pdev)
if (IS_ERR(d->int340x_zone))
return PTR_ERR(d->int340x_zone);
+ ret = acpi_install_notify_handler(adev->handle,
+ ACPI_DEVICE_NOTIFY,
+ int3402_notify,
+ d);
+ if (ret) {
+ int340x_thermal_zone_remove(d->int340x_zone);
+ return ret;
+ }
+
d->handle = adev->handle;
platform_set_drvdata(pdev, d);
@@ -47,6 +78,8 @@ static int int3402_thermal_remove(struct platform_device *pdev)
{
struct int3402_thermal_data *d = platform_get_drvdata(pdev);
+ acpi_remove_notify_handler(d->handle,
+ ACPI_DEVICE_NOTIFY, int3402_notify);
int340x_thermal_zone_remove(d->int340x_zone);
return 0;