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Merge "usb: dwc3-msm: Add usb_ep_autoconfig_by_name"

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qctecmdr 2019-10-31 14:45:00 -07:00 • committed by Gerrit - the friendly Code Review server
commit b49d4cf260
2 changed files with 51 additions and 0 deletions
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45
drivers/usb/dwc3/dwc3-msm.c
View file

@ -1861,6 +1861,51 @@ static int dbm_ep_config(struct dwc3_msm *mdwc, u8 usb_ep, u8 bam_pipe,
return dbm_ep;
}
/**
* usb_ep_autoconfig_by_name - Used to pick the endpoint by name. eg gsi-epin1
* @gadget: The device to which the endpoint must belong.
* @desc: Endpoint descriptor, with endpoint direction and transfer mode
* initialized.
* @ep_name: EP name that is to be searched.
*
*/
struct usb_ep *usb_ep_autoconfig_by_name(
struct usb_gadget *gadget,
struct usb_endpoint_descriptor *desc,
const char *ep_name
)
{
struct usb_ep *ep;
struct dwc3_ep *dep;
bool ep_found = false;
if (!ep_name || !strlen(ep_name))
goto err;
list_for_each_entry(ep, &gadget->ep_list, ep_list)
if (strncmp(ep->name, ep_name, strlen(ep_name)) == 0 &&
!ep->driver_data) {
ep_found = true;
break;
}
if (ep_found) {
dep = to_dwc3_ep(ep);
desc->bEndpointAddress &= USB_DIR_IN;
desc->bEndpointAddress |= dep->number >> 1;
ep->address = desc->bEndpointAddress;
pr_debug("Allocating ep address:%x\n", ep->address);
ep->desc = NULL;
ep->comp_desc = NULL;
return ep;
}
err:
pr_err("%s:error finding ep %s\n", __func__, ep_name);
return NULL;
}
EXPORT_SYMBOL(usb_ep_autoconfig_by_name);
/**
* Configure MSM endpoint.
* This function do specific configurations

6
include/linux/usb/dwc3-msm.h
View file

@ -112,6 +112,8 @@ struct gsi_channel_info {
};
#if IS_ENABLED(CONFIG_USB_DWC3_MSM)
struct usb_ep *usb_ep_autoconfig_by_name(struct usb_gadget *gadget,
struct usb_endpoint_descriptor *desc, const char *ep_name);
int usb_gsi_ep_op(struct usb_ep *ep, void *op_data, enum gsi_ep_op op);
int msm_ep_config(struct usb_ep *ep, struct usb_request *request, u32 bam_opts);
int msm_ep_unconfig(struct usb_ep *ep);
@ -121,6 +123,10 @@ int msm_data_fifo_config(struct usb_ep *ep, unsigned long addr, u32 size,
bool msm_dwc3_reset_ep_after_lpm(struct usb_gadget *gadget);
int msm_dwc3_reset_dbm_ep(struct usb_ep *ep);
#else
static inline struct usb_ep *usb_ep_autoconfig_by_name(
struct usb_gadget *gadget, struct usb_endpoint_descriptor *desc,
const char *ep_name)
{ return NULL; }
static inline int usb_gsi_ep_op(struct usb_ep *ep, void *op_data,
enum gsi_ep_op op)
{ return 0; }