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usb: qcserial: refactor device layout selection 

Preparing for more supported standard device layouts. Keeping
the matching macros unchanged to avoid breaking stable
backporting of new device additions.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bjørn Mork 2014-04-27 16:47:44 +02:00 committed by Greg Kroah-Hartman
parent ce1b066136
commit d712ca91db
1 changed files with 16 additions and 6 deletions
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22
drivers/usb/serial/qcserial.c
View File

@ -22,8 +22,14 @@
#define DRIVER_AUTHOR "Qualcomm Inc"
#define DRIVER_DESC "Qualcomm USB Serial driver"
/* standard device layouts supported by this driver */
enum qcserial_layouts {
QCSERIAL_G2K = 0, /* Gobi 2000 */
QCSERIAL_G1K = 1, /* Gobi 1000 */
};
#define DEVICE_G1K(v, p) \
USB_DEVICE(v, p), .driver_info = 1
USB_DEVICE(v, p), .driver_info = QCSERIAL_G1K
static const struct usb_device_id id_table[] = {
/* Gobi 1000 devices */
@ -178,11 +184,8 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
int retval = -ENODEV;
__u8 nintf;
__u8 ifnum;
bool is_gobi1k = id->driver_info ? true : false;
int altsetting = -1;
dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k);
nintf = serial->dev->actconfig->desc.bNumInterfaces;
dev_dbg(dev, "Num Interfaces = %d\n", nintf);
ifnum = intf->desc.bInterfaceNumber;
@ -230,7 +233,8 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
* gets handled by other drivers.
*/
if (is_gobi1k) {
switch (id->driver_info) {
case QCSERIAL_G1K:
/*
* Gobi 1K USB layout:
* 0: DM/DIAG (use libqcdm from ModemManager for communication)
@ -245,7 +249,8 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
dev_dbg(dev, "Modem port found\n");
else
altsetting = -1;
} else {
break;
case QCSERIAL_G2K:
/*
* Gobi 2K+ USB layout:
* 0: QMI/net
@ -273,6 +278,11 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n");
break;
}
break;
default:
dev_err(dev, "unsupported device layout type: %lu\n",
id->driver_info);
break;
}
done: