thinkpad_acpi: Add support for more adaptive kbd buttons

This commit adds new elements to the ThinkPad keymaps, and
will send key events for keys for which an input.h declaration
exists.

Signed-off-by: Bastien Nocera <hadess@hadess.net>
Reviewed-by: Henrique de Moraes Holschuh <hmh@hyymh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index ae528cf0b1431e173278c02f8037af173f154ac8..5d76f1812783d8be115087c06493fd2e3c2cbdd9 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1912,6 +1912,27 @@ enum {   /* hot key scan codes (derived from ACPI DSDT) */
        TP_ACPI_HOTKEYSCAN_UNK7,
        TP_ACPI_HOTKEYSCAN_UNK8,
 
+       TP_ACPI_HOTKEYSCAN_MUTE2,
+       TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
+       TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
+       TP_ACPI_HOTKEYSCAN_CLOUD,
+       TP_ACPI_HOTKEYSCAN_UNK9,
+       TP_ACPI_HOTKEYSCAN_VOICE,
+       TP_ACPI_HOTKEYSCAN_UNK10,
+       TP_ACPI_HOTKEYSCAN_GESTURES,
+       TP_ACPI_HOTKEYSCAN_UNK11,
+       TP_ACPI_HOTKEYSCAN_UNK12,
+       TP_ACPI_HOTKEYSCAN_UNK13,
+       TP_ACPI_HOTKEYSCAN_CONFIG,
+       TP_ACPI_HOTKEYSCAN_NEW_TAB,
+       TP_ACPI_HOTKEYSCAN_RELOAD,
+       TP_ACPI_HOTKEYSCAN_BACK,
+       TP_ACPI_HOTKEYSCAN_MIC_DOWN,
+       TP_ACPI_HOTKEYSCAN_MIC_UP,
+       TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
+       TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
+       TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
+
        /* Hotkey keymap size */
        TPACPI_HOTKEY_MAP_LEN
 };
@@ -3170,6 +3191,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                /* (assignments unknown, please report if found) */
                KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
                KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+
+               /* No assignments, only used for Adaptive keyboards. */
+               KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+               KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+               KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+               KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+               KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
                },
 
        /* Generic keymap for Lenovo ThinkPads */
@@ -3226,6 +3254,35 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 
                /* Extra keys in use since the X240 / T440 / T540 */
                KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
+
+               /*
+                * These are the adaptive keyboard keycodes for Carbon X1 2014.
+                * The first item in this list is the Mute button which is
+                * emitted with 0x103 through
+                * adaptive_keyboard_hotkey_notify_hotkey() when the sound
+                * symbol is held.
+                * We'll need to offset those by 0x20.
+                */
+               KEY_RESERVED,        /* Mute held, 0x103 */
+               KEY_BRIGHTNESS_MIN,  /* Backlight off */
+               KEY_RESERVED,        /* Clipping tool */
+               KEY_RESERVED,        /* Cloud */
+               KEY_RESERVED,
+               KEY_VOICECOMMAND,    /* Voice */
+               KEY_RESERVED,
+               KEY_RESERVED,        /* Gestures */
+               KEY_RESERVED,
+               KEY_RESERVED,
+               KEY_RESERVED,
+               KEY_CONFIG,          /* Settings */
+               KEY_RESERVED,        /* New tab */
+               KEY_REFRESH,         /* Reload */
+               KEY_BACK,            /* Back */
+               KEY_RESERVED,        /* Microphone down */
+               KEY_RESERVED,        /* Microphone up */
+               KEY_RESERVED,        /* Microphone cancellation */
+               KEY_RESERVED,        /* Camera mode */
+               KEY_RESERVED,        /* Rotate display, 0x116 */
                },
        };
 
@@ -3527,6 +3584,8 @@ static const int adaptive_keyboard_modes[] = {
 
 #define DFR_CHANGE_ROW                 0x101
 #define DFR_SHOW_QUICKVIEW_ROW         0x102
+#define FIRST_ADAPTIVE_KEY             0x103
+#define ADAPTIVE_KEY_OFFSET            0x020
 
 /* press Fn key a while second, it will switch to Function Mode. Then
  * release Fn key, previous mode be restored.
@@ -3582,6 +3641,7 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
 {
        u32 current_mode = 0;
        int new_mode = 0;
+       int keycode;
 
        switch (scancode) {
        case DFR_CHANGE_ROW:
@@ -3614,7 +3674,25 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
                return true;
 
        default:
-               return false;
+               if (scancode < FIRST_ADAPTIVE_KEY || scancode > FIRST_ADAPTIVE_KEY +
+                               TPACPI_HOTKEY_MAP_LEN - ADAPTIVE_KEY_OFFSET) {
+                       pr_info("Unhandled adaptive keyboard key: 0x%x\n",
+                                       scancode);
+                       return false;
+               }
+               keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + ADAPTIVE_KEY_OFFSET];
+               if (keycode != KEY_RESERVED) {
+                       mutex_lock(&tpacpi_inputdev_send_mutex);
+
+                       input_report_key(tpacpi_inputdev, keycode, 1);
+                       input_sync(tpacpi_inputdev);
+
+                       input_report_key(tpacpi_inputdev, keycode, 0);
+                       input_sync(tpacpi_inputdev);
+
+                       mutex_unlock(&tpacpi_inputdev_send_mutex);
+               }
+               return true;
        }
 }