usb: dwc3: Add dwc3_init/remove with DM_USB
The patch is preparing dwc3 core for enabling DM_USB with peripheral
driver with using driver model support.
The driver will be bound by the DWC3 wrapper driver based on the
dr_mode device tree entry.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
(Remove dwc3-omap changes)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 7a91015..7cf0564 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -785,3 +785,58 @@
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
+
+#ifdef CONFIG_DM_USB
+
+int dwc3_init(struct dwc3 *dwc)
+{
+ int ret;
+
+ dwc3_cache_hwparams(dwc);
+
+ ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
+ if (ret) {
+ dev_err(dwc->dev, "failed to allocate event buffers\n");
+ return -ENOMEM;
+ }
+
+ ret = dwc3_core_init(dwc);
+ if (ret) {
+ dev_err(dev, "failed to initialize core\n");
+ goto core_fail;
+ }
+
+ ret = dwc3_event_buffers_setup(dwc);
+ if (ret) {
+ dev_err(dwc->dev, "failed to setup event buffers\n");
+ goto event_fail;
+ }
+
+ ret = dwc3_core_init_mode(dwc);
+ if (ret)
+ goto mode_fail;
+
+ return 0;
+
+mode_fail:
+ dwc3_event_buffers_cleanup(dwc);
+
+event_fail:
+ dwc3_core_exit(dwc);
+
+core_fail:
+ dwc3_free_event_buffers(dwc);
+
+ return ret;
+}
+
+void dwc3_remove(struct dwc3 *dwc)
+{
+ dwc3_core_exit_mode(dwc);
+ dwc3_event_buffers_cleanup(dwc);
+ dwc3_free_event_buffers(dwc);
+ dwc3_core_exit(dwc);
+ kfree(dwc->mem);
+}
+
+#endif