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authorDmitry Torokhov <dtor@insightbb.com>2006-09-14 01:31:27 -0400
committerDmitry Torokhov <dtor@insightbb.com>2006-09-14 01:31:27 -0400
commit9807879bfdc0c2b5106b4b378f5475c6a333d853 (patch)
tree2a761ae4d03b35e371044014af4addcc23f326da /drivers/input/serio/libps2.c
parenta91eaa16df5cd6c552e3a4a6e40e60ffbd9be951 (diff)
Input: atkbd - support Microsoft Natural Elite Pro keyboards
Microsoft Natural Elite Pro keyboard produces unisual response to the GET ID command - single byte 0xaa (normally keyboards produce 2-byte response). Fail GET ID command so atkbd gets a change to do alternate probe. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/serio/libps2.c')
-rw-r--r--drivers/input/serio/libps2.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index ed202f2f251a..e0a2297a9d21 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -35,6 +35,7 @@ EXPORT_SYMBOL(ps2_schedule_command);
EXPORT_SYMBOL(ps2_handle_ack);
EXPORT_SYMBOL(ps2_handle_response);
EXPORT_SYMBOL(ps2_cmd_aborted);
+EXPORT_SYMBOL(ps2_is_keyboard_id);
/* Work structure to schedule execution of a command */
struct ps2work {
@@ -102,9 +103,9 @@ void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout)
* known keyboard IDs.
*/
-static inline int ps2_is_keyboard_id(char id_byte)
+int ps2_is_keyboard_id(char id_byte)
{
- static char keyboard_ids[] = {
+ const static char keyboard_ids[] = {
0xab, /* Regular keyboards */
0xac, /* NCD Sun keyboard */
0x2b, /* Trust keyboard, translated */
@@ -139,6 +140,19 @@ static int ps2_adjust_timeout(struct ps2dev *ps2dev, int command, int timeout)
case PS2_CMD_GETID:
/*
+ * Microsoft Natural Elite keyboard responds to
+ * the GET ID command as it were a mouse, with
+ * a single byte. Fail the command so atkbd will
+ * use alternative probe to detect it.
+ */
+ if (ps2dev->cmdbuf[1] == 0xaa) {
+ serio_pause_rx(ps2dev->serio);
+ ps2dev->flags = 0;
+ serio_continue_rx(ps2dev->serio);
+ timeout = 0;
+ }
+
+ /*
* If device behind the port is not a keyboard there
* won't be 2nd byte of ID response.
*/