[PATCH] sonypi: Enable ACPI events for Sony laptop hotkeys

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: linux-acpi@vger.kernel.org
Cc: Stelian Pop <stelian@popies.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 6a9e23dc4897..f8dd8527c6aa 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -510,6 +510,11 @@ static struct sonypi_device {
 #define SONYPI_ACPI_ACTIVE 0
 #endif                          /* CONFIG_ACPI */
 
+#ifdef CONFIG_ACPI
+static struct acpi_device *sonypi_acpi_device;
+static int acpi_enabled;
+#endif
+
 static int sonypi_ec_write(u8 addr, u8 value)
 {
 #ifdef CONFIG_ACPI_EC
@@ -863,6 +868,11 @@ found:
         if (useinput)
                 sonypi_report_input_event(event);
 
+#ifdef CONFIG_ACPI
+        if (acpi_enabled)
+                acpi_bus_generate_event(sonypi_acpi_device, 1, event);
+#endif
+
         kfifo_put(sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
         kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
         wake_up_interruptible(&sonypi_device.fifo_proc_list);
@@ -1164,6 +1174,32 @@ static int sonypi_disable(void)
         return 0;
 }
 
+#ifdef CONFIG_ACPI
+static int sonypi_acpi_add(struct acpi_device *device)
+{
+        sonypi_acpi_device = device;
+        strcpy(acpi_device_name(device), "Sony laptop hotkeys");
+        strcpy(acpi_device_class(device), "sony/hotkey");
+        return 0;
+}
+
+static int sonypi_acpi_remove(struct acpi_device *device, int type)
+{
+        sonypi_acpi_device = NULL;
+        return 0;
+}
+
+static struct acpi_driver sonypi_acpi_driver = {
+        .name           = "sonypi",
+        .class          = "hkey",
+        .ids            = "SNY6001",
+        .ops            = {
+                           .add = sonypi_acpi_add,
+                           .remove = sonypi_acpi_remove,
+        },
+};
+#endif
+
 static int __devinit sonypi_create_input_devices(void)
 {
         struct input_dev *jog_dev;
@@ -1511,6 +1547,11 @@ static int __init sonypi_init(void)
         if (error)
                 goto err_free_device;
 
+#ifdef CONFIG_ACPI
+        if (acpi_bus_register_driver(&sonypi_acpi_driver) > 0)
+                acpi_enabled = 1;
+#endif
+
         return 0;
 
  err_free_device:
@@ -1522,6 +1563,10 @@ static int __init sonypi_init(void)
 
 static void __exit sonypi_exit(void)
 {
+#ifdef CONFIG_ACPI
+        if (acpi_enabled)
+                acpi_bus_unregister_driver(&sonypi_acpi_driver);
+#endif
         platform_device_unregister(sonypi_platform_device);
         platform_driver_unregister(&sonypi_driver);
         printk(KERN_INFO "sonypi: removed.\n");