From: Jing Leng <jleng@xxxxxxxxxxxxx>
Currently the f_uac1 driver only supports UAC_SET_CUR request.
But when uac1 device is plugged to Ubuntu 20.04 PC, at the stage
of setup, the PC will send UAC_SET_RES request, If the device
doesn't respond to the request, the PC will abort the setup process
and uac1 device can't be recognized on Ubuntu 20.04 PC.
So f_uac1 driver should handle other set requests.
Signed-off-by: Jing Leng <jleng@xxxxxxxxxxxxx>
---
drivers/usb/gadget/function/f_uac1.c | 44 +++++++++++++++++++++++-----
1 file changed, 36 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 03f50643fbba..c9d8ec4fdf22 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -589,7 +589,7 @@ in_rq_res(struct usb_function *fn, const struct usb_ctrlrequest *cr)
}
static void
-out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req)
+out_rq_complete(struct usb_ep *ep, struct usb_request *req)
{
struct g_audio *audio = req->context;
struct usb_composite_dev *cdev = audio->func.config->cdev;
@@ -614,9 +614,11 @@ out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req)
is_playback = 1;
if (control_selector == UAC_FU_MUTE) {
- u8 mute = *(u8 *)req->buf;
+ if (cr->bRequest == UAC_SET_CUR) {
+ u8 mute = *(u8 *)req->buf;
- u_audio_set_mute(audio, is_playback, mute);
+ u_audio_set_mute(audio, is_playback, mute);
+ }
return;
} else if (control_selector == UAC_FU_VOLUME) {
@@ -624,7 +626,34 @@ out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req)
s16 volume;
volume = le16_to_cpu(*c);
- u_audio_set_volume(audio, is_playback, volume);
+
+ switch (cr->bRequest) {
+ case UAC_SET_CUR:
+ u_audio_set_volume(audio, is_playback, volume);
+ break;
+ case UAC_SET_MIN:
+ if (is_playback)
+ opts->p_volume_min = volume;
+ else
+ opts->c_volume_min = volume;
+ break;
+ case UAC_SET_MAX:
+ if (is_playback)
+ opts->p_volume_max = volume;
+ else
+ opts->c_volume_max = volume;
+ break;
+ case UAC_SET_RES:
+ if (is_playback)
+ opts->p_volume_res = volume;
+ else
+ opts->c_volume_res = volume;
+ break;
+ case UAC_SET_MEM:
+ break;
+ default:
+ break;
+ }
return;
} else {
@@ -643,7 +672,7 @@ out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req)
}
static int
-out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+ac_rq_out(struct usb_function *fn, const struct usb_ctrlrequest *cr)
{
struct usb_request *req = fn->config->cdev->req;
struct g_audio *audio = func_to_g_audio(fn);
@@ -659,7 +688,7 @@ out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
(FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) {
memcpy(&uac1->setup_cr, cr, sizeof(*cr));
req->context = audio;
- req->complete = out_rq_cur_complete;
+ req->complete = out_rq_complete;
return w_length;
} else {
@@ -789,8 +818,7 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
value = audio_get_endpoint_req(f, ctrl);
break;
case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE:
- if (ctrl->bRequest == UAC_SET_CUR)
- value = out_rq_cur(f, ctrl);
+ value = ac_rq_out(f, ctrl);
break;
case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE:
value = ac_rq_in(f, ctrl);
--
2.17.1
