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usb: gadget: f_ecm: Add suspend/resume and remote wakeup support

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When host sends suspend notification to the device, handle
the suspend callbacks in the function driver. Depending on
the remote wakeup capability the device can either trigger a
remote wakeup or wait for the host initiated resume to resume
data transfer.

Signed-off-by: Elson Roy Serrao <quic_eserrao@quicinc.com>
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/1679694482-16430-7-git-send-email-quic_eserrao@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Elson Roy Serrao
2023-03-24 14:48:02 -07:00
committed by Greg Kroah-Hartman
parent 481c225c48
commit 0a1af6dfa0
3 changed files with 89 additions and 0 deletions
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4
drivers/usb/gadget/function/u_ether.h
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@@ -79,6 +79,7 @@ struct gether {
/* called on network open/close */
void (*open)(struct gether *);
void (*close)(struct gether *);
bool is_suspend;
};
#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
@@ -258,6 +259,9 @@ int gether_set_ifname(struct net_device *net, const char *name, int len);
void gether_cleanup(struct eth_dev *dev);
void gether_suspend(struct gether *link);
void gether_resume(struct gether *link);
/* connect/disconnect is handled by individual functions */
struct net_device *gether_connect(struct gether *);
void gether_disconnect(struct gether *);