Changes in uspace/drv/bus/usb/ohci/hc.c [bb97118:9dfb034] in mainline

File:

• uspace/drv/bus/usb/ohci/hc.c (modified) (3 diffs)

uspace/drv/bus/usb/ohci/hc.c

@@ -1 +1 @@
 /*
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2011 Jan Vesely
  * Copyright (c) 2018 Ondrej Hlavaty
@@ -192 +193 @@
 {
         assert(instance);
-        /* TODO: implement*/
+        /* TODO: implement */
         return ENOTSUP;
+}
+
+/** Quiesce host controller
+ *
+ * @param hcd Host controller device
+ */
+int hc_quiesce(hc_device_t *hcd)
+{
+        hc_t *instance = hcd_to_hc(hcd);
+
+        /* OHCI guide page 42 */
+        usb_log_debug2("Started hc initialization routine.");
+
+        /* Reset hc */
+        usb_log_debug2("HC reset.");
+        size_t time = 0;
+        OHCI_WR(instance->registers->command_status, CS_HCR);
+        while (OHCI_RD(instance->registers->command_status) & CS_HCR) {
+                fibril_usleep(10);
+                time += 10;
+        }
+        usb_log_debug2("HC reset complete in %zu us.", time);
+
+        return EOK;
 }
 
@@ -595 +620 @@
         }
 
-        /*Init HCCA */
+        /* Init HCCA */
         instance->hcca = hcca_get();
         if (instance->hcca == NULL)