Add type parameter to usb_cdc_wdm_register function in order to
specify which control protocol the cdc-wdm channel is transporting.
It will be required for exposing the channel(s) through WWAN framework.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
---
drivers/net/usb/cdc_mbim.c | 1 +
drivers/net/usb/huawei_cdc_ncm.c | 1 +
drivers/net/usb/qmi_wwan.c | 3 ++-
drivers/usb/class/cdc-wdm.c | 13 +++++++++----
include/linux/usb/cdc-wdm.h | 16 +++++++++++++++-
5 files changed, 28 insertions(+), 6 deletions(-)
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index 5db6627..63b134b 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -168,6 +168,7 @@ static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)
subdriver = usb_cdc_wdm_register(ctx->control,
&dev->status->desc,
le16_to_cpu(ctx->mbim_desc->wMaxControlMessage),
+ USB_CDC_WDM_MBIM,
cdc_mbim_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
diff --git a/drivers/net/usb/huawei_cdc_ncm.c b/drivers/net/usb/huawei_cdc_ncm.c
index a87f0da..388a46b 100644
--- a/drivers/net/usb/huawei_cdc_ncm.c
+++ b/drivers/net/usb/huawei_cdc_ncm.c
@@ -96,6 +96,7 @@ static int huawei_cdc_ncm_bind(struct usbnet *usbnet_dev,
subdriver = usb_cdc_wdm_register(ctx->control,
&usbnet_dev->status->desc,
1024, /* wMaxCommand */
+ USB_CDC_WDM_AT,
huawei_cdc_ncm_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 17a0505..fa38471 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -724,7 +724,8 @@ static int qmi_wwan_register_subdriver(struct usbnet *dev)
/* register subdriver */
subdriver = usb_cdc_wdm_register(info->control, &dev->status->desc,
- 4096, &qmi_wwan_cdc_wdm_manage_power);
+ 4096, USB_CDC_WDM_QMI,
+ &qmi_wwan_cdc_wdm_manage_power);
if (IS_ERR(subdriver)) {
dev_err(&info->control->dev, "subdriver registration failed\n");
rv = PTR_ERR(subdriver);
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 508b1c3..b59f146 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -106,6 +106,8 @@ struct wdm_device {
struct list_head device_list;
int (*manage_power)(struct usb_interface *, int);
+
+ enum usb_cdc_wdm_type type;
};
static struct usb_driver wdm_driver;
@@ -836,7 +838,8 @@ static void service_interrupt_work(struct work_struct *work)
/* --- hotplug --- */
static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep,
- u16 bufsize, int (*manage_power)(struct usb_interface *, int))
+ u16 bufsize, enum usb_cdc_wdm_type type,
+ int (*manage_power)(struct usb_interface *, int))
{
int rv = -ENOMEM;
struct wdm_device *desc;
@@ -853,6 +856,7 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor
/* this will be expanded and needed in hardware endianness */
desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber);
desc->intf = intf;
+ desc->type = type;
INIT_WORK(&desc->rxwork, wdm_rxwork);
INIT_WORK(&desc->service_outs_intr, service_interrupt_work);
@@ -977,7 +981,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
goto err;
ep = &iface->endpoint[0].desc;
- rv = wdm_create(intf, ep, maxcom, &wdm_manage_power);
+ rv = wdm_create(intf, ep, maxcom, USB_CDC_WDM_UNKNOWN, &wdm_manage_power);
err:
return rv;
@@ -988,6 +992,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
* @intf: usb interface the subdriver will associate with
* @ep: interrupt endpoint to monitor for notifications
* @bufsize: maximum message size to support for read/write
+ * @type: Type/protocol of the transported data (MBIM, QMI...)
* @manage_power: call-back invoked during open and release to
* manage the device's power
* Create WDM usb class character device and associate it with intf
@@ -1005,12 +1010,12 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
*/
struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep,
- int bufsize,
+ int bufsize, enum usb_cdc_wdm_type type,
int (*manage_power)(struct usb_interface *, int))
{
int rv;
- rv = wdm_create(intf, ep, bufsize, manage_power);
+ rv = wdm_create(intf, ep, bufsize, type, manage_power);
if (rv < 0)
goto err;
diff --git a/include/linux/usb/cdc-wdm.h b/include/linux/usb/cdc-wdm.h
index 9b895f9..ba9702d 100644
--- a/include/linux/usb/cdc-wdm.h
+++ b/include/linux/usb/cdc-wdm.h
@@ -14,9 +14,23 @@
#include <uapi/linux/usb/cdc-wdm.h>
+/**
+ * enum usb_cdc_wdm_type - CDC WDM endpoint type
+ * @USB_CDC_WDM_UNKNOWN: Unknown type
+ * @USB_CDC_WDM_MBIM: Mobile Broadband Interface Model control
+ * @USB_CDC_WDM_QMI: Qualcomm Modem Interface for modem control
+ * @USB_CDC_WDM_AT: AT commands interface
+ */
+enum usb_cdc_wdm_type {
+ USB_CDC_WDM_UNKNOWN,
+ USB_CDC_WDM_MBIM,
+ USB_CDC_WDM_QMI,
+ USB_CDC_WDM_AT
+};
+
extern struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep,
- int bufsize,
+ int bufsize, enum usb_cdc_wdm_type type,
int (*manage_power)(struct usb_interface *, int));
#endif /* __LINUX_USB_CDC_WDM_H */
--
2.7.4
