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usb: mtu3: add tracepoints to help debug

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This patch implements a few initial tracepoints for the
mtu3 driver. More traces can be added as necessary in order
to ease the task of debugging.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun
2019-03-21 10:53:48 +08:00
committed by Greg Kroah-Hartman
parent 4aab6ad24a
commit 83374e035b
9 changed files with 347 additions and 1 deletions
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1
drivers/usb/mtu3/mtu3_dr.c
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@@ -141,6 +141,7 @@ static void ssusb_set_mailbox(struct otg_switch_mtk *otg_sx,
struct mtu3 *mtu = ssusb->u3d;
dev_dbg(ssusb->dev, "mailbox state(%d)\n", status);
mtu3_dbg_trace(ssusb->dev, "mailbox %d", status);
switch (status) {
case MTU3_ID_GROUND: