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From 638cab7e1dc3711f7fb04155bcdabf4b8895cc5e Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 4 Aug 2008 17:08:36 +0930
Subject: [PATCH] xfree86: force SwitchCoreKeyboard for evdev devices (updated).

If an evdev keyboard device is added through the HAL mechanism, force a
SwitchCoreKeyboard to load the evdev map into the VCK. This way, by the time a
client starts the evdev keymap is already there, leading to less pain lateron.

Works if:
- all keyboards are hotplugged through HAL, and/or
- the xorg.conf keyboard uses the kbd driver.

Has no effect (i.e. busted keymaps) if:
- an evdev keyboard device has been specified in the xorg.conf.
- we don't have a device at startup and plug a device in after starting the
  desktop environment.
- if the device we use isn't the first one reported by HAL.

If HAL isn't set up, this patch is a noop.
---
 hw/xfree86/common/xf86Xinput.c |   31 +++++++++++++++++++++++++++++++
 1 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/hw/xfree86/common/xf86Xinput.c b/hw/xfree86/common/xf86Xinput.c
index 710e787..dacc3dc 100644
--- a/hw/xfree86/common/xf86Xinput.c
+++ b/hw/xfree86/common/xf86Xinput.c
@@ -423,6 +423,37 @@ NewInputDeviceRequest (InputOption *options, DeviceIntPtr *pdev)
         (!is_auto || xf86Info.autoEnableDevices))
         EnableDevice(dev);
 
+    /* XXX: The VCK always starts with built-in defaults for keymap. These
+     * defaults are different to the evdev ones. When the first key is hit on
+     * an extension device, the keymap is copied into the VCK's and any
+     * changes made at runtime to the VCK map are lost.
+     *
+     * Assumption: if we have at least one evdev keyboard device, we can
+     * ignore kbd devices. Force a SwitchCoreKeyboard so the VCK has the same
+     * keymap as we do.
+     *
+     * Next time we hit a key, we don't change the map over anymore (see
+     * SwitchCoreKeyboard), and live happily ever after.
+     * Until we have 2 physical keyboards. Or the first real keyboard isn't
+     * actually the one we use. Oh well.
+     *
+     */
+    if (dev->key)
+    {
+        InputInfoPtr info;
+
+        /* Search if there is one other keyboard that uses evdev. */
+        for (info = xf86InputDevs; info; info = info->next)
+        {
+            if (info != pInfo && info->dev && info->dev->key &&
+                (strcmp(info->drv->driverName, "evdev") == 0))
+                break;
+        }
+
+        if (!info)
+            SwitchCoreKeyboard(dev);
+    }
+
     *pdev = dev;
     return Success;
 
-- 
1.5.5.1