From: Marc Dietrich <marvin24@xxxxxx>
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@xxxxxx>
Signed-off-by: Julian Andres Klode <jak@xxxxxxxxxxxxx>
---
drivers/staging/nvec/nvec_ps2.c | 18 +++++++++++++-----
1 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/nvec/nvec_ps2.c b/drivers/staging/nvec/nvec_ps2.c
index 8bfaccd..7f470ba 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;
}
--
1.7.7.3
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