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staging: nvec: ps2: add some more debug functions 

This can print the mouse traffic which goes over the i2c bus. Make
mouse debugging messages configurable and disable them by default.

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Julian Andres Klode <jak@jak-linux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marc Dietrich 2011-12-26 17:57:35 +01:00 committed by Greg Kroah-Hartman
parent 4b625c3abe
commit 0eedab704e
1 changed files with 13 additions and 5 deletions
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18
drivers/staging/nvec/nvec_ps2.c
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@ -25,6 +25,14 @@
#define STOP_STREAMING {'\x06', '\x04'}
#define SEND_COMMAND {'\x06', '\x01', '\xf4', '\x01'}
#ifdef NVEC_PS2_DEBUG
#define NVEC_PHD(str, buf, len) \
print_hex_dump(KERN_DEBUG, str, DUMP_PREFIX_NONE, \
16, 1, buf, len, false)
#else
#define NVEC_PHD(str, buf, len)
#endif
static const unsigned char MOUSE_RESET[] = {'\x06', '\x01', '\xff', '\x03'};
struct nvec_ps2 {
@ -67,18 +75,18 @@ static int nvec_ps2_notifier(struct notifier_block *nb,
case NVEC_PS2_EVT:
for (i = 0; i < msg[1]; i++)
serio_interrupt(ps2_dev.ser_dev, msg[2 + i], 0);
NVEC_PHD("ps/2 mouse event: ", &msg[2], msg[1]);
return NOTIFY_STOP;
case NVEC_PS2:
if (msg[2] == 1)
if (msg[2] == 1) {
for (i = 0; i < (msg[1] - 2); i++)
serio_interrupt(ps2_dev.ser_dev, msg[i + 4], 0);
else if (msg[1] != 2) { /* !ack */
print_hex_dump(KERN_WARNING, "unhandled mouse event: ",
DUMP_PREFIX_NONE, 16, 1,
msg, msg[1] + 2, true);
NVEC_PHD("ps/2 mouse reply: ", &msg[4], msg[1] - 2);
}
else if (msg[1] != 2) /* !ack */
NVEC_PHD("unhandled mouse event: ", msg, msg[1] + 2);
return NOTIFY_STOP;
}