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authorJayshri Pawar <jpawar@cadence.com>2019-10-21 07:35:00 +0100
committerFelipe Balbi <felipe.balbi@linux.intel.com>2019-10-22 10:37:29 +0300
commit0b8b1a1fede01eb727646e70a1b4872cdbd327aa (patch)
treea4a9e49e7777217ca02cdadaba64b722ee1f643b /drivers/usb/gadget
parent75eaa498c99eebf9f9237656f69469e50197cc0b (diff)
usb: gadget: f_tcm: Provide support to get alternate setting in tcm function
Providing tcm_get_alt in tcm function to support Bulk only protocol and USB Attached SCSI protocol Signed-off-by: Jayshri Pawar <jpawar@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/function/f_tcm.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 7f01f78b1d23..36504931b2d1 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -846,7 +846,7 @@ static void uasp_set_alt(struct f_uas *fu)
fu->flags = USBG_IS_UAS;
- if (gadget->speed == USB_SPEED_SUPER)
+ if (gadget->speed >= USB_SPEED_SUPER)
fu->flags |= USBG_USE_STREAMS;
config_ep_by_speed(gadget, f, fu->ep_in);
@@ -2093,6 +2093,16 @@ static void tcm_delayed_set_alt(struct work_struct *wq)
usb_composite_setup_continue(fu->function.config->cdev);
}
+static int tcm_get_alt(struct usb_function *f, unsigned intf)
+{
+ if (intf == bot_intf_desc.bInterfaceNumber)
+ return USB_G_ALT_INT_BBB;
+ if (intf == uasp_intf_desc.bInterfaceNumber)
+ return USB_G_ALT_INT_UAS;
+
+ return -EOPNOTSUPP;
+}
+
static int tcm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
{
struct f_uas *fu = to_f_uas(f);
@@ -2300,6 +2310,7 @@ static struct usb_function *tcm_alloc(struct usb_function_instance *fi)
fu->function.bind = tcm_bind;
fu->function.unbind = tcm_unbind;
fu->function.set_alt = tcm_set_alt;
+ fu->function.get_alt = tcm_get_alt;
fu->function.setup = tcm_setup;
fu->function.disable = tcm_disable;
fu->function.free_func = tcm_free;