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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2009-10-21 00:03:39 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 20:55:15 +0100 |
| commit | 0ad72524ef623f32f6899e656951bb5646caead1 (patch) | |
| tree | 369642d6f8e64a063f5fcdb8ec5aa93b77fb66e7 /drivers/usb/gadget/f_audio.c | |
| parent | USB gadget: Handle endpoint requests at the function level (diff) | |
| download | linux-0ad72524ef623f32f6899e656951bb5646caead1.tar.xz linux-0ad72524ef623f32f6899e656951bb5646caead1.zip | |
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.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c index 98e9bb977291..c43c89ffa2c8 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, |