From: Luo Andy <yifei.luo@xxxxxxxxx>
This patch adds test mode support for Langwell gadget driver.
Signed-off-by: Henry Yuan <hang.yuan@xxxxxxxxx>
Signed-off-by: Andy Luo <yifei.luo@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/gadget/langwell_udc.c | 23 +++++++++++++++++++++++
include/linux/usb/ch9.h | 10 ++++++++++
2 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index b8ec954..7779724 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -2225,6 +2225,7 @@ static void handle_setup_packet(struct langwell_udc *dev,
u16 wValue = le16_to_cpu(setup->wValue);
u16 wIndex = le16_to_cpu(setup->wIndex);
u16 wLength = le16_to_cpu(setup->wLength);
+ u32 portsc1;
dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__);
@@ -2313,6 +2314,28 @@ static void handle_setup_packet(struct langwell_udc *dev,
dev->dev_status &= ~(1 << wValue);
}
break;
+ case USB_DEVICE_TEST_MODE:
+ dev_dbg(&dev->pdev->dev, "SETUP: TEST MODE\n");
+ if ((wIndex & 0xff) ||
+ (dev->gadget.speed != USB_SPEED_HIGH))
+ ep0_stall(dev);
+
+ switch (wIndex >> 8) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ if (prime_status_phase(dev, EP_DIR_IN))
+ ep0_stall(dev);
+ portsc1 = readl(&dev->op_regs->portsc1);
+ portsc1 |= (wIndex & 0xf00) << 8;
+ writel(portsc1, &dev->op_regs->portsc1);
+ goto end;
+ default:
+ rc = -EOPNOTSUPP;
+ }
+ break;
default:
rc = -EOPNOTSUPP;
break;
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index f917bbb..ab46194 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -124,6 +124,16 @@
#define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */
/*
+ * Test Mode Selectors
+ * See USB 2.0 spec Table 9-7
+ */
+#define TEST_J 1
+#define TEST_K 2
+#define TEST_SE0_NAK 3
+#define TEST_PACKET 4
+#define TEST_FORCE_EN 5
+
+/*
* New Feature Selectors as added by USB 3.0
* See USB 3.0 spec Table 9-6
*/
--
1.7.3.2
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