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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2009-10-21 00:03:39 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:55:15 -0800
commit0ad72524ef623f32f6899e656951bb5646caead1 (patch)
tree369642d6f8e64a063f5fcdb8ec5aa93b77fb66e7 /drivers/usb/gadget/f_audio.c
parent5242658d1b97771d658991cf29be32bcf81d5859 (diff)
USB audio gadget: handle endpoint control requests at the function level
Now that control requests targeted at an endpoint can be handled at the function level, move the UAC-specific control request handling code from the audio gadget driver to the audio function driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/f_audio.c')
-rw-r--r--drivers/usb/gadget/f_audio.c76
1 files changed, 74 insertions, 2 deletions
diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c
index 98e9bb97729..c43c89ffa2c 100644
--- a/drivers/usb/gadget/f_audio.c
+++ b/drivers/usb/gadget/f_audio.c
@@ -445,6 +445,70 @@ static int audio_get_intf_req(struct usb_function *f,
return len;
}
+static int audio_set_endpoint_req(struct usb_function *f,
+ const struct usb_ctrlrequest *ctrl)
+{
+ struct usb_composite_dev *cdev = f->config->cdev;
+ int value = -EOPNOTSUPP;
+ u16 ep = le16_to_cpu(ctrl->wIndex);
+ u16 len = le16_to_cpu(ctrl->wLength);
+ u16 w_value = le16_to_cpu(ctrl->wValue);
+
+ DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n",
+ ctrl->bRequest, w_value, len, ep);
+
+ switch (ctrl->bRequest) {
+ case UAC_SET_CUR:
+ value = 0;
+ break;
+
+ case UAC_SET_MIN:
+ break;
+
+ case UAC_SET_MAX:
+ break;
+
+ case UAC_SET_RES:
+ break;
+
+ case UAC_SET_MEM:
+ break;
+
+ default:
+ break;
+ }
+
+ return value;
+}
+
+static int audio_get_endpoint_req(struct usb_function *f,
+ const struct usb_ctrlrequest *ctrl)
+{
+ struct usb_composite_dev *cdev = f->config->cdev;
+ int value = -EOPNOTSUPP;
+ u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF);
+ u16 len = le16_to_cpu(ctrl->wLength);
+ u16 w_value = le16_to_cpu(ctrl->wValue);
+
+ DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, endpoint %d\n",
+ ctrl->bRequest, w_value, len, ep);
+
+ switch (ctrl->bRequest) {
+ case UAC_GET_CUR:
+ case UAC_GET_MIN:
+ case UAC_GET_MAX:
+ case UAC_GET_RES:
+ value = 3;
+ break;
+ case UAC_GET_MEM:
+ break;
+ default:
+ break;
+ }
+
+ return value;
+}
+
static int
f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
{
@@ -455,8 +519,8 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
u16 w_value = le16_to_cpu(ctrl->wValue);
u16 w_length = le16_to_cpu(ctrl->wLength);
- /* composite driver infrastructure handles everything except
- * Audio class messages; interface activation uses set_alt().
+ /* composite driver infrastructure handles everything; interface
+ * activation uses set_alt().
*/
switch (ctrl->bRequestType) {
case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE:
@@ -467,6 +531,14 @@ f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
value = audio_get_intf_req(f, ctrl);
break;
+ case USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT:
+ value = audio_set_endpoint_req(f, ctrl);
+ break;
+
+ case USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT:
+ value = audio_get_endpoint_req(f, ctrl);
+ break;
+
default:
ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n",
ctrl->bRequestType, ctrl->bRequest,