From 9807879bfdc0c2b5106b4b378f5475c6a333d853 Mon Sep 17 00:00:00 2001
From: Dmitry Torokhov <dtor@insightbb.com>
Date: Thu, 14 Sep 2006 01:31:27 -0400
Subject: 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>
---
drivers/input/keyboard/atkbd.c | 4 +---
drivers/input/serio/libps2.c | 18 ++++++++++++++++--
include/linux/libps2.h | 1 +
3 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index ce1f10e898..9874072cf9 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -635,9 +635,7 @@ static int atkbd_probe(struct atkbd *atkbd)
return 0;
}
- if (param[0] != 0xab && param[0] != 0xac && /* Regular and NCD Sun keyboards */
- param[0] != 0x2b && param[0] != 0x5d && /* Trust keyboard, raw and translated */
- param[0] != 0x60 && param[0] != 0x47) /* NMB SGI keyboard, raw and translated */
+ if (!ps2_is_keyboard_id(param[0]))
return -1;
atkbd->id = (param[0] << 8) | param[1];
diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index ed202f2f25..e0a2297a9d 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 */
@@ -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.
diff --git a/include/linux/libps2.h b/include/linux/libps2.h
index 08a450a9db..f6f301e2b0 100644
--- a/include/linux/libps2.h
+++ b/include/linux/libps2.h
@@ -47,5 +47,6 @@ int ps2_schedule_command(struct ps2dev *ps2dev, unsigned char *param, int comman
int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data);
int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data);
void ps2_cmd_aborted(struct ps2dev *ps2dev);
+int ps2_is_keyboard_id(char id);
#endif /* _LIBPS2_H */
--
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