toshiba_acpi: Add Hotkey Event Type function and definitions

This patch adds support to query the "Hotkey Event Type" the system
supports.

There are two main event types (so far), 0x10 and 0x11, with the
first being all those laptops that have the old keyboard layout, and
the latter all those new laptops with the new keyboard layout.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 5009d8539c50..2a63ad043c4b 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -116,6 +116,7 @@ MODULE_LICENSE("GPL");
 #define HCI_KBD_ILLUMINATION            0x0095
 #define HCI_ECO_MODE                    0x0097
 #define HCI_ACCELEROMETER2              0x00a6
+#define HCI_SYSTEM_INFO                 0xc000
 #define SCI_PANEL_POWER_ON              0x010d
 #define SCI_ILLUMINATION                0x014e
 #define SCI_USB_SLEEP_CHARGE            0x0150
@@ -133,6 +134,8 @@ MODULE_LICENSE("GPL");
 #define HCI_LCD_BRIGHTNESS_SHIFT        (16-HCI_LCD_BRIGHTNESS_BITS)
 #define HCI_LCD_BRIGHTNESS_LEVELS       (1 << HCI_LCD_BRIGHTNESS_BITS)
 #define HCI_MISC_SHIFT                  0x10
+#define HCI_SYSTEM_TYPE1                0x10
+#define HCI_SYSTEM_TYPE2                0x11
 #define HCI_VIDEO_OUT_LCD               0x1
 #define HCI_VIDEO_OUT_CRT               0x2
 #define HCI_VIDEO_OUT_TV                0x4
@@ -1149,6 +1152,28 @@ static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
         return 0;
 }
 
+/* Hotkey Event type */
+static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
+                                         u32 *type)
+{
+        u32 val1 = 0x03;
+        u32 val2 = 0;
+        u32 result;
+
+        result = hci_read2(dev, HCI_SYSTEM_INFO, &val1, &val2);
+        if (result == TOS_FAILURE) {
+                pr_err("ACPI call to get System type failed\n");
+                return -EIO;
+        } else if (result == TOS_NOT_SUPPORTED) {
+                pr_info("System type not supported\n");
+                return -ENODEV;
+        }
+
+        *type = val2;
+
+        return 0;
+}
+
 /* Bluetooth rfkill handlers */
 
 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)