From 48eee0b41a1c6e979e4b47d75bb3f2493c1b5fb9 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 1 Mar 2013 20:46:25 +0100 Subject: [PATCH] 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 Tested-by: Bhupesh Sharma Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_uvc.c | 52 +++++++++++++------------------------- 1 file changed, 18 insertions(+), 34 deletions(-) diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c index c13b8b07c791..8e4827c3afb5 100644 --- a/drivers/usb/gadget/f_uvc.c +++ b/drivers/usb/gadget/f_uvc.c @@ -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;