diff options
| author | Elson Roy Serrao <quic_eserrao@quicinc.com> | 2023-03-24 14:48:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-29 10:27:01 +0200 |
| commit | 0a1af6dfa0772ffedaef422127f1338fa0ddfed3 (patch) | |
| tree | 5c225f704f8fedc8a5361526cb03a12e96a9e1cc /drivers/usb/gadget/function/f_ecm.c | |
| parent | 481c225c4802be62e52aabddae5338ed1705b232 (diff) | |
| download | lwn-0a1af6dfa0772ffedaef422127f1338fa0ddfed3.tar.gz lwn-0a1af6dfa0772ffedaef422127f1338fa0ddfed3.zip | |
usb: gadget: f_ecm: Add suspend/resume and remote wakeup support
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>
Diffstat (limited to 'drivers/usb/gadget/function/f_ecm.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_ecm.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c index a7ab30e603e2..c6e63ad77a40 100644 --- a/drivers/usb/gadget/function/f_ecm.c +++ b/drivers/usb/gadget/function/f_ecm.c @@ -885,6 +885,26 @@ static struct usb_function_instance *ecm_alloc_inst(void) return &opts->func_inst; } +static void ecm_suspend(struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + struct usb_composite_dev *cdev = ecm->port.func.config->cdev; + + DBG(cdev, "ECM Suspend\n"); + + gether_suspend(&ecm->port); +} + +static void ecm_resume(struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + struct usb_composite_dev *cdev = ecm->port.func.config->cdev; + + DBG(cdev, "ECM Resume\n"); + + gether_resume(&ecm->port); +} + static void ecm_free(struct usb_function *f) { struct f_ecm *ecm; @@ -952,6 +972,8 @@ static struct usb_function *ecm_alloc(struct usb_function_instance *fi) ecm->port.func.setup = ecm_setup; ecm->port.func.disable = ecm_disable; ecm->port.func.free_func = ecm_free; + ecm->port.func.suspend = ecm_suspend; + ecm->port.func.resume = ecm_resume; return &ecm->port.func; } |