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usb: misc: EHSET Test Fixture device driver for host compliance
An Embedded Host High-Speed Electrical Test (EHSET) test fixture is used to initiate test modes on a host controller in order to perform the high speed electrical testing procedure for USB-IF compliance. When this test fixture is connected to a host, it can enumerate as one of several selectable VID/PID pairs, each corresponding to one of the following test modes: * TEST_SE0_NAK * TEST_J * TEST_K * TEST_PACKET * HS_HOST_PORT_SUSPEND_RESUME * SINGLE_STEP_GET_DEV_DESC * SINGLE_STEP_SET_FEATURE The USB EHSET procedure can be found here: http://www.usb.org/developers/onthego/EHSET_v1.01.pdf Signed-off-by: Manu Gautam <mgautam@codeaurora.org> [jackp@codeaurora.org: imported from commit 073c9409 on codeaurora.org; minor cleanup and updated author email] Signed-off-by: Jack Pham <jackp@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Manu Gautam
Greg Kroah-Hartman
parent
42189d854f
commit
1353aa5385
@ -200,6 +200,19 @@ config USB_TEST
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See <http://www.linux-usb.org/usbtest/> for more information,
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including sample test device firmware and "how to use it".
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config USB_EHSET_TEST_FIXTURE
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tristate "USB EHSET Test Fixture driver"
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help
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Say Y here if you want to support the special test fixture device
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used for the USB-IF Embedded Host High-Speed Electrical Test procedure.
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When the test fixture is connected, it can enumerate as one of several
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VID/PID pairs. This driver then initiates a corresponding test mode on
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the downstream port to which the test fixture is attached.
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See <http://www.usb.org/developers/onthego/EHSET_v1.01.pdf> for more
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information.
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config USB_ISIGHTFW
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tristate "iSight firmware loading support"
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select FW_LOADER
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@ -19,6 +19,7 @@ obj-$(CONFIG_USB_LED) += usbled.o
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obj-$(CONFIG_USB_LEGOTOWER) += legousbtower.o
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obj-$(CONFIG_USB_RIO500) += rio500.o
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obj-$(CONFIG_USB_TEST) += usbtest.o
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obj-$(CONFIG_USB_EHSET_TEST_FIXTURE) += ehset.o
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obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o
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obj-$(CONFIG_USB_USS720) += uss720.o
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obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o
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134
drivers/usb/misc/ehset.c
Normal file
134
drivers/usb/misc/ehset.c
Normal file
@ -0,0 +1,134 @@
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/*
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* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/usb/ch11.h>
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#define TEST_SE0_NAK_PID 0x0101
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#define TEST_J_PID 0x0102
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#define TEST_K_PID 0x0103
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#define TEST_PACKET_PID 0x0104
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#define TEST_HS_HOST_PORT_SUSPEND_RESUME 0x0106
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#define TEST_SINGLE_STEP_GET_DEV_DESC 0x0107
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#define TEST_SINGLE_STEP_SET_FEATURE 0x0108
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static int ehset_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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int ret = -EINVAL;
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struct usb_device *dev = interface_to_usbdev(intf);
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struct usb_device *hub_udev = dev->parent;
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struct usb_device_descriptor *buf;
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u8 portnum = dev->portnum;
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u16 test_pid = le16_to_cpu(dev->descriptor.idProduct);
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switch (test_pid) {
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case TEST_SE0_NAK_PID:
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_SET_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_TEST,
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(TEST_SE0_NAK << 8) | portnum,
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NULL, 0, 1000);
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break;
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case TEST_J_PID:
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_SET_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_TEST,
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(TEST_J << 8) | portnum,
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NULL, 0, 1000);
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break;
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case TEST_K_PID:
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_SET_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_TEST,
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(TEST_K << 8) | portnum,
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NULL, 0, 1000);
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break;
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case TEST_PACKET_PID:
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_SET_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_TEST,
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(TEST_PACKET << 8) | portnum,
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NULL, 0, 1000);
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break;
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case TEST_HS_HOST_PORT_SUSPEND_RESUME:
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/* Test: wait for 15secs -> suspend -> 15secs delay -> resume */
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msleep(15 * 1000);
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_SET_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_SUSPEND, portnum,
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NULL, 0, 1000);
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if (ret < 0)
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break;
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msleep(15 * 1000);
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ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0),
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USB_REQ_CLEAR_FEATURE, USB_RT_PORT,
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USB_PORT_FEAT_SUSPEND, portnum,
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NULL, 0, 1000);
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break;
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case TEST_SINGLE_STEP_GET_DEV_DESC:
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/* Test: wait for 15secs -> GetDescriptor request */
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msleep(15 * 1000);
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buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
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USB_DT_DEVICE << 8, 0,
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buf, USB_DT_DEVICE_SIZE,
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USB_CTRL_GET_TIMEOUT);
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kfree(buf);
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break;
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case TEST_SINGLE_STEP_SET_FEATURE:
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/* unsupported for now */
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default:
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dev_err(&intf->dev, "%s: unsupported PID: 0x%x\n",
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__func__, test_pid);
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}
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return (ret < 0) ? ret : 0;
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}
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static void ehset_disconnect(struct usb_interface *intf)
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{
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}
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static const struct usb_device_id ehset_id_table[] = {
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{ USB_DEVICE(0x1a0a, TEST_SE0_NAK_PID) },
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{ USB_DEVICE(0x1a0a, TEST_J_PID) },
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{ USB_DEVICE(0x1a0a, TEST_K_PID) },
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{ USB_DEVICE(0x1a0a, TEST_PACKET_PID) },
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{ USB_DEVICE(0x1a0a, TEST_HS_HOST_PORT_SUSPEND_RESUME) },
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{ USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_GET_DEV_DESC) },
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{ USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_SET_FEATURE) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, ehset_id_table);
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static struct usb_driver ehset_driver = {
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.name = "usb_ehset_test",
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.probe = ehset_probe,
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.disconnect = ehset_disconnect,
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.id_table = ehset_id_table,
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};
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module_usb_driver(ehset_driver);
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MODULE_DESCRIPTION("USB Driver for EHSET Test Fixture");
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MODULE_LICENSE("GPL v2");
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