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Commit 7fc56f0d authored by Luo Andy's avatar Luo Andy Committed by Greg Kroah-Hartman
Browse files

usb: gadget: langwell_udc: add usb test mode support 



This patch adds test mode support for Langwell gadget driver.

Signed-off-by: default avatarHenry Yuan <hang.yuan@intel.com>
Signed-off-by: default avatarAndy Luo <yifei.luo@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent b23f2f94

drivers/usb/gadget/langwell_udc.c

+23 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/usb/ch9.h

+10 −0
Original line number Diff line number Diff line
@@ -123,6 +123,16 @@ 
#define USB_DEVICE_A_ALT_HNP_SUPPORT	5	/* (otg) other RH port does */

#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