eeepc-wmi: add hibernate/resume callbacks

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index de501fb3d1bb..583ba78a7f7d 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -1183,10 +1183,59 @@ static int eeepc_wmi_remove(struct platform_device *device)
         return 0;
 }
 
+/*
+ * Platform driver - hibernate/resume callbacks
+ */
+static int eeepc_hotk_thaw(struct device *device)
+{
+        struct eeepc_wmi *eeepc = dev_get_drvdata(device);
+
+        if (eeepc->wlan_rfkill) {
+                bool wlan;
+
+                /*
+                 * Work around bios bug - acpi _PTS turns off the wireless led
+                 * during suspend.  Normally it restores it on resume, but
+                 * we should kick it ourselves in case hibernation is aborted.
+                 */
+                wlan = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN);
+                eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_WLAN, wlan, NULL);
+        }
+
+        return 0;
+}
+
+static int eeepc_hotk_restore(struct device *device)
+{
+        struct eeepc_wmi *eeepc = dev_get_drvdata(device);
+        int bl;
+
+        /* Refresh both wlan rfkill state and pci hotplug */
+        if (eeepc->wlan_rfkill)
+                eeepc_rfkill_hotplug(eeepc);
+
+        if (eeepc->bluetooth_rfkill) {
+                bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BLUETOOTH);
+                rfkill_set_sw_state(eeepc->bluetooth_rfkill, bl);
+}
+        if (eeepc->wwan3g_rfkill) {
+                bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WWAN3G);
+                rfkill_set_sw_state(eeepc->wwan3g_rfkill, bl);
+        }
+
+        return 0;
+}
+
+static const struct dev_pm_ops eeepc_pm_ops = {
+        .thaw = eeepc_hotk_thaw,
+        .restore = eeepc_hotk_restore,
+};
+
 static struct platform_driver platform_driver = {
         .driver = {
                 .name = EEEPC_WMI_FILE,
                 .owner = THIS_MODULE,
+                .pm = &eeepc_pm_ops,
         },
 };