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usb: gadget: uvc: Merge the SS/HS/FS control endpoint descriptors 

The descriptors are identical, there's no need to have several copies of
them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Laurent Pinchart 2013-03-01 20:46:25 +01:00 committed by Felipe Balbi
parent ee6a4d870b
commit 48eee0b41a
1 changed files with 18 additions and 34 deletions
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52
drivers/usb/gadget/f_uvc.c
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@ -104,7 +104,7 @@ static struct usb_interface_descriptor uvc_control_intf __initdata = {
.iInterface = 0,
};
static struct usb_endpoint_descriptor uvc_fs_control_ep __initdata = {
static struct usb_endpoint_descriptor uvc_control_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
@ -113,6 +113,15 @@ static struct usb_endpoint_descriptor uvc_fs_control_ep __initdata = {
.bInterval = 8,
};
static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = {
.bLength = sizeof(uvc_ss_control_comp),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* The following 3 values can be tweaked if necessary. */
.bMaxBurst = 0,
.bmAttributes = 0,
.wBytesPerInterval = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE),
};
static struct uvc_control_endpoint_descriptor uvc_control_cs_ep __initdata = {
.bLength = UVC_DT_CONTROL_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_CS_ENDPOINT,
@ -144,7 +153,7 @@ static struct usb_interface_descriptor uvc_streaming_intf_alt1 __initdata = {
.iInterface = 0,
};
static struct usb_endpoint_descriptor uvc_fs_streaming_ep = {
static struct usb_endpoint_descriptor uvc_fs_streaming_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
@ -153,7 +162,7 @@ static struct usb_endpoint_descriptor uvc_fs_streaming_ep = {
.bInterval = 1,
};
static struct usb_endpoint_descriptor uvc_hs_streaming_ep = {
static struct usb_endpoint_descriptor uvc_hs_streaming_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
@ -162,27 +171,6 @@ static struct usb_endpoint_descriptor uvc_hs_streaming_ep = {
.bInterval = 1,
};
/* super speed support */
static struct usb_endpoint_descriptor uvc_ss_control_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE),
.bInterval = 8,
};
static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = {
.bLength = sizeof(uvc_ss_control_comp),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* the following 3 values can be tweaked if necessary */
.bMaxBurst = 0,
.bmAttributes = 0,
.wBytesPerInterval = cpu_to_le16(UVC_STATUS_MAX_PACKET_SIZE),
};
static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@ -193,11 +181,10 @@ static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = {
.bInterval = 4,
};
static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp = {
static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp __initdata = {
.bLength = sizeof(uvc_ss_streaming_comp),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* the following 3 values can be tweaked if necessary */
/* The following 3 values can be tweaked if necessary. */
.bMaxBurst = 0,
.bmAttributes = 0,
.wBytesPerInterval = cpu_to_le16(1024),
@ -454,7 +441,6 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
const struct uvc_descriptor_header * const *uvc_streaming_cls;
const struct usb_descriptor_header * const *uvc_streaming_std;
const struct usb_descriptor_header * const *src;
static struct usb_endpoint_descriptor *uvc_control_ep;
struct usb_descriptor_header **dst;
struct usb_descriptor_header **hdr;
unsigned int control_size;
@ -468,14 +454,12 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
uvc_control_desc = uvc->desc.ss_control;
uvc_streaming_cls = uvc->desc.ss_streaming;
uvc_streaming_std = uvc_ss_streaming;
uvc_control_ep = &uvc_ss_control_ep;
break;
case USB_SPEED_HIGH:
uvc_control_desc = uvc->desc.fs_control;
uvc_streaming_cls = uvc->desc.hs_streaming;
uvc_streaming_std = uvc_hs_streaming;
uvc_control_ep = &uvc_fs_control_ep;
break;
case USB_SPEED_FULL:
@ -483,7 +467,6 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
uvc_control_desc = uvc->desc.fs_control;
uvc_streaming_cls = uvc->desc.fs_streaming;
uvc_streaming_std = uvc_fs_streaming;
uvc_control_ep = &uvc_fs_control_ep;
break;
}
@ -494,6 +477,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
* Class-specific UVC control descriptors
* uvc_control_ep
* uvc_control_cs_ep
* uvc_ss_control_comp (for SS only)
* uvc_streaming_intf_alt0
* Class-specific UVC streaming descriptors
* uvc_{fs|hs}_streaming
@ -503,7 +487,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
control_size = 0;
streaming_size = 0;
bytes = uvc_iad.bLength + uvc_control_intf.bLength
+ uvc_control_ep->bLength + uvc_control_cs_ep.bLength
+ uvc_control_ep.bLength + uvc_control_cs_ep.bLength
+ uvc_streaming_intf_alt0.bLength;
if (speed == USB_SPEED_SUPER) {
@ -549,7 +533,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed)
uvc_control_header->bInCollection = 1;
uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf;
UVC_COPY_DESCRIPTOR(mem, dst, uvc_control_ep);
UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep);
if (speed == USB_SPEED_SUPER)
UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_control_comp);
@ -619,7 +603,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f)
uvc_fs_streaming_ep.bInterval = streaming_interval;
/* Allocate endpoints. */
ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_control_ep);
ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);
if (!ep) {
INFO(cdev, "Unable to allocate control EP\n");
goto error;