Merge branch 'fixes-rc2' into fixes

1 files changed, 25 insertions, 1 deletions

diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index 1433260d99b4..fc21cf2d36f6 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -69,6 +69,13 @@ static const char *const speed_names[] = {
 	[USB_SPEED_SUPER_PLUS] = "super-speed-plus",
 };
 
+static const char *const ssp_rate[] = {
+	[USB_SSP_GEN_UNKNOWN] = "UNKNOWN",
+	[USB_SSP_GEN_2x1] = "super-speed-plus-gen2x1",
+	[USB_SSP_GEN_1x2] = "super-speed-plus-gen1x2",
+	[USB_SSP_GEN_2x2] = "super-speed-plus-gen2x2",
+};
+
 const char *usb_speed_string(enum usb_device_speed speed)
 {
 	if (speed < 0 || speed >= ARRAY_SIZE(speed_names))
@@ -86,12 +93,29 @@ enum usb_device_speed usb_get_maximum_speed(struct device *dev)
 	if (ret < 0)
 		return USB_SPEED_UNKNOWN;
 
-	ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
+	ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed);
+	if (ret > 0)
+		return USB_SPEED_SUPER_PLUS;
 
+	ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
 	return (ret < 0) ? USB_SPEED_UNKNOWN : ret;
 }
 EXPORT_SYMBOL_GPL(usb_get_maximum_speed);
 
+enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev)
+{
+	const char *maximum_speed;
+	int ret;
+
+	ret = device_property_read_string(dev, "maximum-speed", &maximum_speed);
+	if (ret < 0)
+		return USB_SSP_GEN_UNKNOWN;
+
+	ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed);
+	return (ret < 0) ? USB_SSP_GEN_UNKNOWN : ret;
+}
+EXPORT_SYMBOL_GPL(usb_get_maximum_ssp_rate);
+
 const char *usb_state_string(enum usb_device_state state)
 {
 	static const char *const names[] = {