From 848436a48d21447fc78bef67a4cbf11392536de2 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Sun, 1 Oct 2017 06:19:40 -0700
Subject: [PATCH] usb: emul: Expose find_descriptor() as a public API
This can be useful outside of the sandbox usb emulation uclass
driver. Expose it as a public API with a proper prefix (usb_emul_).
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---
drivers/usb/emul/usb-emul-uclass.c | 5 ++---
include/usb.h | 11 +++++++++++
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/emul/usb-emul-uclass.c b/drivers/usb/emul/usb-emul-uclass.c
index 1203eb2f11..359d0da07e 100644
--- a/drivers/usb/emul/usb-emul-uclass.c
+++ b/drivers/usb/emul/usb-emul-uclass.c
@@ -52,7 +52,7 @@ static int usb_emul_get_string(struct usb_string *strings, int index,
return -EINVAL;
}
-static struct usb_generic_descriptor **find_descriptor(
+struct usb_generic_descriptor **usb_emul_find_descriptor(
struct usb_generic_descriptor **ptr, int type, int index)
{
debug("%s: type=%x, index=%d\n", __func__, type, index);
@@ -91,8 +91,7 @@ static int usb_emul_get_descriptor(struct usb_dev_platdata *plat, int value,
length);
}
- ptr = find_descriptor((struct usb_generic_descriptor **)plat->desc_list,
- type, index);
+ ptr = usb_emul_find_descriptor(plat->desc_list, type, index);
if (!ptr) {
debug("%s: Could not find descriptor type %d, index %d\n",
__func__, type, index);
diff --git a/include/usb.h b/include/usb.h
index 63eddddc91..3766514635 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -1055,6 +1055,17 @@ int usb_emul_find(struct udevice *bus, ulong pipe, int port1,
*/
int usb_emul_find_for_dev(struct udevice *dev, struct udevice **emulp);
+/**
+ * usb_emul_find_descriptor() - Find a USB descriptor of a particular device
+ *
+ * @ptr: a pointer to a list of USB descriptor pointers
+ * @type: type of USB descriptor to find
+ * @index: if @type is USB_DT_CONFIG, this is the configuration value
+ * @return a pointer to the USB descriptor found, NULL if not found
+ */
+struct usb_generic_descriptor **usb_emul_find_descriptor(
+ struct usb_generic_descriptor **ptr, int type, int index);
+
/**
* usb_emul_reset() - Reset all emulators ready for use
*
--
2.39.5