[PATCH 4/7] thinkpad_acpi: Add support for more adaptive kbd buttons

From: Bastien Nocera
Date: Fri Feb 20 2015 - 09:46:02 EST


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@xxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 80 +++++++++++++++++++++++++++++++++++-
1 file changed, 79 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 2030c54..57130a1 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1911,6 +1911,27 @@ 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
};
@@ -3169,6 +3190,13 @@ 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 */
@@ -3225,6 +3253,35 @@ 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 */
},
};

@@ -3526,6 +3583,8 @@ 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.
@@ -3581,6 +3640,7 @@ 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:
@@ -3613,7 +3673,25 @@ 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;
}
}

--
2.1.0


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