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authorMarc Dietrich <marvin24@gmx.de>2011-12-26 17:57:35 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-31 10:27:58 -0800
commit0eedab704ed93d03b1ac392fd329f7ed20ab2279 (patch)
treeb518506005d72632e6d85229451d849e012349fe /drivers/staging/nvec
parentstaging: nvec: ps2: tell nvec to send 6 byte long messages (diff)
downloadlinux-dev-0eedab704ed93d03b1ac392fd329f7ed20ab2279.tar.xz
linux-dev-0eedab704ed93d03b1ac392fd329f7ed20ab2279.zip
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>
Diffstat (limited to 'drivers/staging/nvec')
-rw-r--r--drivers/staging/nvec/nvec_ps2.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/staging/nvec/nvec_ps2.c b/drivers/staging/nvec/nvec_ps2.c
index 8bfaccd04ac9..7f470ba1160c 100644
--- a/drivers/staging/nvec/nvec_ps2.c
+++ b/drivers/staging/nvec/nvec_ps2.c
@@ -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;
}