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Input: atkbd - support Microsoft Natural Elite Pro keyboards

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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>
This commit is contained in:
Dmitry Torokhov
2006-09-14 01:31:27 -04:00
parent a91eaa16df
commit 9807879bfd
3 changed files with 18 additions and 5 deletions
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drivers/input/serio/libps2.c
+16 -2
View File
@@ -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 */
@@ -138,6 +139,19 @@ static int ps2_adjust_timeout(struct ps2dev *ps2dev, int command, int timeout)
break;
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.