diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2022-04-06 22:29:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-21 20:20:25 +0300 |
| commit | 7e824f28c9d7275471aa98509a7e3c8369fae379 (patch) | |
| tree | 18120181e505e1691173759c4c17ba17a2f3e92a /drivers/usb/gadget | |
| parent | 6a7c7df993bd3c90014453ec59a7b455613cf0e4 (diff) | |
| download | linux-7e824f28c9d7275471aa98509a7e3c8369fae379.tar.xz | |
usb: gadget: f_acm: add support for USB_CDC_REQ_SEND_BREAK
Currently the usb side setting of the USB_CDC_REQ_SEND_BREAK control
is not supported. This patch adds the support.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220406192914.3302636-1-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/function/f_acm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c index 349945e064bb..411eb489e0ff 100644 --- a/drivers/usb/gadget/function/f_acm.c +++ b/drivers/usb/gadget/function/f_acm.c @@ -333,6 +333,8 @@ static void acm_complete_set_line_coding(struct usb_ep *ep, } } +static int acm_send_break(struct gserial *port, int duration); + static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { struct f_acm *acm = func_to_acm(f); @@ -391,6 +393,14 @@ static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) acm->port_handshake_bits = w_value; break; + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_REQ_SEND_BREAK: + if (w_index != acm->ctrl_id) + goto invalid; + + acm_send_break(&acm->port, w_value); + break; + default: invalid: dev_vdbg(&cdev->gadget->dev, |