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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-03-21 10:53:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-26 16:40:14 +0900 |
| commit | f926da42218c9d6a6e34a314cd5c9535bcd81627 (patch) | |
| tree | 3c3937a116809e0246e70242ec13da861d6474b5 | |
| parent | 83374e035b6286731c5aa617844c7b724294c2a7 (diff) | |
| download | linux-f926da42218c9d6a6e34a314cd5c9535bcd81627.tar.gz linux-f926da42218c9d6a6e34a314cd5c9535bcd81627.tar.bz2 linux-f926da42218c9d6a6e34a314cd5c9535bcd81627.zip | |
usb: mtu3: add a function to switch mailbox state to string
By introducing mailbox_state_string(), allow to make debug
log more readable
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/mtu3/mtu3_dr.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c index 82913120622b..5fcb71af875a 100644 --- a/drivers/usb/mtu3/mtu3_dr.c +++ b/drivers/usb/mtu3/mtu3_dr.c @@ -21,6 +21,22 @@ enum mtu3_vbus_id_state { MTU3_VBUS_VALID, }; +static char *mailbox_state_string(enum mtu3_vbus_id_state state) +{ + switch (state) { + case MTU3_ID_FLOAT: + return "ID_FLOAT"; + case MTU3_ID_GROUND: + return "ID_GROUND"; + case MTU3_VBUS_OFF: + return "VBUS_OFF"; + case MTU3_VBUS_VALID: + return "VBUS_VALID"; + default: + return "UNKNOWN"; + } +} + static void toggle_opstate(struct ssusb_mtk *ssusb) { if (!ssusb->otg_switch.is_u3_drd) { @@ -140,8 +156,8 @@ static void ssusb_set_mailbox(struct otg_switch_mtk *otg_sx, container_of(otg_sx, struct ssusb_mtk, otg_switch); struct mtu3 *mtu = ssusb->u3d; - dev_dbg(ssusb->dev, "mailbox state(%d)\n", status); - mtu3_dbg_trace(ssusb->dev, "mailbox %d", status); + dev_dbg(ssusb->dev, "mailbox %s\n", mailbox_state_string(status)); + mtu3_dbg_trace(ssusb->dev, "mailbox %s", mailbox_state_string(status)); switch (status) { case MTU3_ID_GROUND: |