From: lokilee73 <changjoo.lee@samsung.com>
Date: Tue, 5 Sep 2017 07:12:37 +0000 (+0900)
Subject: api: Add altsetting getter
X-Git-Tag: submit/tizen_4.0/20170905.071639^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8d6eacdc75b46a3ccd2e0c202c8d824933458736;p=platform%2Fcore%2Fapi%2Fusb-host.git

api: Add altsetting getter

Change-Id: I55de3d0aa3f7963ae29277b05e4d9a16e1dee582
Signed-off-by: lokilee73 <changjoo.lee@samsung.com>
---

diff --git a/include/usb_host.h b/include/usb_host.h
index 1256345..ac6c91a 100755
--- a/include/usb_host.h
+++ b/include/usb_host.h
@@ -835,6 +835,19 @@ int usb_host_interface_get_endpoint(usb_host_interface_h interface, int ep_index
  */
 int usb_host_interface_set_altsetting(usb_host_interface_h interface, int altsetting);
 
+/**
+ * @ingroup CAPI_USB_HOST_INTERFACE_MODULE
+ * @brief Gets current alternative setting from an interface.
+ * @since_tizen 4.0
+ * @param[in] interface Interface handle
+ * @param[out] altsetting Index of alternative setting set for the given interface
+ * @return 0 on success, otherwise a negative error value
+ * @retval #USB_HOST_ERROR_NONE Successful
+ * @retval #USB_HOST_ERROR_NOT_SUPPORTED Not supported
+ * @retval #USB_HOST_ERROR_INVALID_PARAMETER Invalid parameter was passed
+ */
+int usb_host_interface_get_altsetting(usb_host_interface_h interface, int *altsetting);
+
 /**
  * @ingroup CAPI_USB_HOST_INTERFACE_MODULE
  * @brief Gets string describing an interface.
diff --git a/src/usb_host.c b/src/usb_host.c
index 76dc5b1..079862a 100755
--- a/src/usb_host.c
+++ b/src/usb_host.c
@@ -1552,6 +1552,20 @@ int usb_host_interface_set_altsetting(usb_host_interface_h interface, int altset
 	return 0;
 }
 
+int usb_host_interface_get_altsetting(usb_host_interface_h interface, int *altsetting)
+{
+	if (!usb_host_feature_enabled())
+		return USB_HOST_ERROR_NOT_SUPPORTED;
+
+	if (!interface || !altsetting) {
+		_E("Invalid parameter was passed");
+		return USB_HOST_ERROR_INVALID_PARAMETER;
+	}
+
+	*altsetting = interface->altsetting;
+	return 0;
+}
+
 int usb_host_config_get_interface(usb_host_config_h config, int interface_index, usb_host_interface_h *interface)
 {
 	if (!usb_host_feature_enabled())