usb: dwc3; ep0: Modify _dwc3_ep0_start_trans_ API to take 'chain' parameter

No functional change. Added a new parameter in _dwc3_ep0_start_trans_ to
indicate whether the TRB is a chained TRB or last TRB. This is in
preparation for adding chained TRB support for ep0.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 396c2af00fedb59596a815e0f19dffa24d1fc8b6..3f709a3ef31a87646ab855fe1aa35558a67a7c73 100644 (file)
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -56,7 +56,7 @@ static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
 }
 
 static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
-               u32 len, u32 type)
+               u32 len, u32 type, bool chain)
 {
        struct dwc3_gadget_ep_cmd_params params;
        struct dwc3_trb                 *trb;
@@ -302,7 +302,7 @@ void dwc3_ep0_out_start(struct dwc3 *dwc)
        int                             ret;
 
        ret = dwc3_ep0_start_trans(dwc, 0, dwc->ctrl_req_addr, 8,
-                       DWC3_TRBCTL_CONTROL_SETUP);
+                       DWC3_TRBCTL_CONTROL_SETUP, false);
        WARN_ON(ret < 0);
 }
 
@@ -855,7 +855,7 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
 
                        ret = dwc3_ep0_start_trans(dwc, epnum,
                                        dwc->ctrl_req_addr, 0,
-                                       DWC3_TRBCTL_CONTROL_DATA);
+                                       DWC3_TRBCTL_CONTROL_DATA, false);
                        WARN_ON(ret < 0);
                }
        }
@@ -939,7 +939,7 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
        if (req->request.length == 0) {
                ret = dwc3_ep0_start_trans(dwc, dep->number,
                                dwc->ctrl_req_addr, 0,
-                               DWC3_TRBCTL_CONTROL_DATA);
+                               DWC3_TRBCTL_CONTROL_DATA, false);
        } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket)
                        && (dep->number == 0)) {
                u32     transfer_size = 0;
@@ -970,7 +970,7 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
                 */
                ret = dwc3_ep0_start_trans(dwc, dep->number,
                                dwc->ep0_bounce_addr, transfer_size,
-                               DWC3_TRBCTL_CONTROL_DATA);
+                               DWC3_TRBCTL_CONTROL_DATA, false);
        } else {
                ret = usb_gadget_map_request(&dwc->gadget, &req->request,
                                dep->number);
@@ -980,7 +980,8 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
                }
 
                ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma,
-                               req->request.length, DWC3_TRBCTL_CONTROL_DATA);
+                               req->request.length, DWC3_TRBCTL_CONTROL_DATA,
+                               false);
        }
 
        WARN_ON(ret < 0);
@@ -995,7 +996,7 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep)
                : DWC3_TRBCTL_CONTROL_STATUS2;
 
        return dwc3_ep0_start_trans(dwc, dep->number,
-                       dwc->ctrl_req_addr, 0, type);
+                       dwc->ctrl_req_addr, 0, type, false);
 }
 
 static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep)