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Diffstat (limited to 'include/linux/usb/gadget.h')
-rw-r--r--include/linux/usb/gadget.h26
1 files changed, 18 insertions, 8 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 1d3a67523ffc..da653b5c7134 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -20,6 +20,7 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/slab.h>
+#include <linux/scatterlist.h>
#include <linux/types.h>
#include <linux/usb/ch9.h>
@@ -32,6 +33,9 @@ struct usb_ep;
* @dma: DMA address corresponding to 'buf'. If you don't set this
* field, and the usb controller needs one, it is responsible
* for mapping and unmapping the buffer.
+ * @sg: a scatterlist for SG-capable controllers.
+ * @num_sgs: number of SG entries
+ * @num_mapped_sgs: number of SG entries mapped to DMA (internal)
* @length: Length of that data
* @stream_id: The stream id, when USB3.0 bulk streams are being used
* @no_interrupt: If true, hints that no completion irq is needed.
@@ -88,6 +92,10 @@ struct usb_request {
unsigned length;
dma_addr_t dma;
+ struct scatterlist *sg;
+ unsigned num_sgs;
+ unsigned num_mapped_sgs;
+
unsigned stream_id:16;
unsigned no_interrupt:1;
unsigned zero:1;
@@ -164,7 +172,7 @@ struct usb_ep {
unsigned maxpacket:16;
unsigned max_streams:16;
unsigned mult:2;
- unsigned maxburst:4;
+ unsigned maxburst:5;
u8 address;
const struct usb_endpoint_descriptor *desc;
const struct usb_ss_ep_comp_descriptor *comp_desc;
@@ -477,8 +485,9 @@ struct usb_gadget_ops {
* driver setup() requests
* @ep_list: List of other endpoints supported by the device.
* @speed: Speed of current connection to USB host.
- * @is_dualspeed: True if the controller supports both high and full speed
- * operation. If it does, the gadget driver must also support both.
+ * @max_speed: Maximal speed the UDC can handle. UDC must support this
+ * and all slower speeds.
+ * @sg_supported: true if we can handle scatter-gather
* @is_otg: True if the USB device port uses a Mini-AB jack, so that the
* gadget driver must provide a USB OTG descriptor.
* @is_a_peripheral: False unless is_otg, the "A" end of a USB cable
@@ -518,7 +527,8 @@ struct usb_gadget {
struct usb_ep *ep0;
struct list_head ep_list; /* of usb_ep */
enum usb_device_speed speed;
- unsigned is_dualspeed:1;
+ enum usb_device_speed max_speed;
+ unsigned sg_supported:1;
unsigned is_otg:1;
unsigned is_a_peripheral:1;
unsigned b_hnp_enable:1;
@@ -549,7 +559,7 @@ static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev)
static inline int gadget_is_dualspeed(struct usb_gadget *g)
{
#ifdef CONFIG_USB_GADGET_DUALSPEED
- /* runtime test would check "g->is_dualspeed" ... that might be
+ /* runtime test would check "g->max_speed" ... that might be
* useful to work around hardware bugs, but is mostly pointless
*/
return 1;
@@ -567,7 +577,7 @@ static inline int gadget_is_superspeed(struct usb_gadget *g)
{
#ifdef CONFIG_USB_GADGET_SUPERSPEED
/*
- * runtime test would check "g->is_superspeed" ... that might be
+ * runtime test would check "g->max_speed" ... that might be
* useful to work around hardware bugs, but is mostly pointless
*/
return 1;
@@ -760,7 +770,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
/**
* struct usb_gadget_driver - driver for usb 'slave' devices
* @function: String describing the gadget's function
- * @speed: Highest speed the driver handles.
+ * @max_speed: Highest speed the driver handles.
* @setup: Invoked for ep0 control requests that aren't handled by
* the hardware level driver. Most calls must be handled by
* the gadget driver, including descriptor and configuration
@@ -824,7 +834,7 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
*/
struct usb_gadget_driver {
char *function;
- enum usb_device_speed speed;
+ enum usb_device_speed max_speed;
void (*unbind)(struct usb_gadget *);
int (*setup)(struct usb_gadget *,
const struct usb_ctrlrequest *);