component: driver: usb: Add usb interface string(iInterface) setting

To make compositive usb device string more reansonable, not all devices
just show same "RTT Composite Device" on windows device manager.

add a interface rt_usbd_device_set_interface_string to set respective
interface string.

Signed-off-by: Dillon Min <[email protected]>
v1 -> v2: remove all tabs to space, to match rt-thread coding style

1 files changed, 30 insertions, 2 deletions

diff --git a/components/drivers/usb/usbdevice/core/usbdevice_core.c b/components/drivers/usb/usbdevice/core/usbdevice_core.c
index ef569d7bf2..063d5781bc 100644
--- a/components/drivers/usb/usbdevice/core/usbdevice_core.c
+++ b/components/drivers/usb/usbdevice/core/usbdevice_core.c
@@ -123,12 +123,18 @@ static rt_err_t _get_string_descriptor(struct udevice* device, ureq_t setup)
     }
     else
     {
-        len = rt_strlen(device->str[index]);
+        if(index < 5)
+            len = rt_strlen(device->str[index]);
+        else
+            len = rt_strlen(device->str_intf[index]);
         str_desc.bLength = len*2 + 2;
 
         for(i=0; i<len; i++)
         {
-            str_desc.String[i*2] = device->str[index][i];
+            if(index < 5)
+                str_desc.String[i*2] = device->str[index][i];
+            else
+                str_desc.String[i*2] = device->str_intf[index][i];
             str_desc.String[i*2 + 1] = 0;
         }
     }
@@ -1044,6 +1050,28 @@ rt_err_t rt_usbd_device_set_string(udevice_t device, const char** ustring)
     return RT_EOK;
 }
 
+/**
+ * This function will set usb device interface string description.
+ *
+ * @param device the usb device object.
+ * @param index of interface string
+ * @param string pointer to interface string description.
+ *
+ * @return RT_EOK.
+ */
+rt_err_t rt_usbd_device_set_interface_string(udevice_t device, int index, const char* string)
+{
+    /* parameter check */
+    RT_ASSERT(device != RT_NULL);
+    RT_ASSERT(string != RT_NULL);
+    RT_ASSERT(index < MAX_INTF_STR);
+
+    /* set string descriptor array to the device object */
+    device->str_intf[index] = string;
+
+    return RT_EOK;
+}
+
 rt_err_t rt_usbd_device_set_os_comp_id_desc(udevice_t device, usb_os_comp_id_desc_t os_comp_id_desc)
 {
     /* parameter check */