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-rw-r--r--drivers/macintosh/adbhid.c56
1 files changed, 47 insertions, 9 deletions
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
index b46817f699f..9ff2189d2e2 100644
--- a/drivers/macintosh/adbhid.c
+++ b/drivers/macintosh/adbhid.c
@@ -52,6 +52,11 @@
MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
+static int restore_capslock_events;
+module_param(restore_capslock_events, int, 0644);
+MODULE_PARM_DESC(restore_capslock_events,
+ "Produce keypress events for capslock on both keyup and keydown.");
+
#define KEYB_KEYREG 0 /* register # for key up/down data */
#define KEYB_LEDREG 2 /* register # for leds on ADB keyboard */
#define MOUSE_DATAREG 0 /* reg# for movement/button codes from mouse */
@@ -217,6 +222,8 @@ struct adbhid {
#define FLAG_FN_KEY_PRESSED 0x00000001
#define FLAG_POWER_FROM_FN 0x00000002
#define FLAG_EMU_FWDEL_DOWN 0x00000004
+#define FLAG_CAPSLOCK_TRANSLATE 0x00000008
+#define FLAG_CAPSLOCK_DOWN 0x00000010
static struct adbhid *adbhid[16];
@@ -272,19 +279,50 @@ adbhid_keyboard_input(unsigned char *data, int nb, int apoll)
}
static void
-adbhid_input_keycode(int id, int keycode, int repeat)
+adbhid_input_keycode(int id, int scancode, int repeat)
{
struct adbhid *ahid = adbhid[id];
- int up_flag;
-
- up_flag = (keycode & 0x80);
- keycode &= 0x7f;
+ int keycode, up_flag;
+
+ keycode = scancode & 0x7f;
+ up_flag = scancode & 0x80;
+
+ if (restore_capslock_events) {
+ if (keycode == ADB_KEY_CAPSLOCK && !up_flag) {
+ /* Key pressed, turning on the CapsLock LED.
+ * The next 0xff will be interpreted as a release. */
+ ahid->flags |= FLAG_CAPSLOCK_TRANSLATE
+ | FLAG_CAPSLOCK_DOWN;
+ } else if (scancode == 0xff) {
+ /* Scancode 0xff usually signifies that the capslock
+ * key was either pressed or released. */
+ if (ahid->flags & FLAG_CAPSLOCK_TRANSLATE) {
+ keycode = ADB_KEY_CAPSLOCK;
+ if (ahid->flags & FLAG_CAPSLOCK_DOWN) {
+ /* Key released */
+ up_flag = 1;
+ ahid->flags &= ~FLAG_CAPSLOCK_DOWN;
+ } else {
+ /* Key pressed */
+ up_flag = 0;
+ ahid->flags &= ~FLAG_CAPSLOCK_TRANSLATE;
+ }
+ } else {
+ printk(KERN_INFO "Spurious caps lock event "
+ "(scancode 0xff).");
+ }
+ }
+ }
switch (keycode) {
- case ADB_KEY_CAPSLOCK: /* Generate down/up events for CapsLock everytime. */
- input_report_key(ahid->input, KEY_CAPSLOCK, 1);
- input_report_key(ahid->input, KEY_CAPSLOCK, 0);
- input_sync(ahid->input);
+ case ADB_KEY_CAPSLOCK:
+ if (!restore_capslock_events) {
+ /* Generate down/up events for CapsLock everytime. */
+ input_report_key(ahid->input, KEY_CAPSLOCK, 1);
+ input_sync(ahid->input);
+ input_report_key(ahid->input, KEY_CAPSLOCK, 0);
+ input_sync(ahid->input);
+ }
return;
#ifdef CONFIG_PPC_PMAC
case ADB_KEY_POWER_OLD: /* Power key on PBook 3400 needs remapping */