diff options
Diffstat (limited to 'drivers/usb/misc/ehset.c')
| -rw-r--r-- | drivers/usb/misc/ehset.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/usb/misc/ehset.c b/drivers/usb/misc/ehset.c new file mode 100644 index 00000000000..c31b4a33e6b --- /dev/null +++ b/drivers/usb/misc/ehset.c @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/usb/ch11.h> + +#define TEST_SE0_NAK_PID 0x0101 +#define TEST_J_PID 0x0102 +#define TEST_K_PID 0x0103 +#define TEST_PACKET_PID 0x0104 +#define TEST_HS_HOST_PORT_SUSPEND_RESUME 0x0106 +#define TEST_SINGLE_STEP_GET_DEV_DESC 0x0107 +#define TEST_SINGLE_STEP_SET_FEATURE 0x0108 + +static int ehset_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + int ret = -EINVAL; + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_device *hub_udev = dev->parent; + struct usb_device_descriptor *buf; + u8 portnum = dev->portnum; + u16 test_pid = le16_to_cpu(dev->descriptor.idProduct); + + switch (test_pid) { + case TEST_SE0_NAK_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_SE0_NAK << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_J_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_J << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_K_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_K << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_PACKET_PID: + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (TEST_PACKET << 8) | portnum, + NULL, 0, 1000); + break; + case TEST_HS_HOST_PORT_SUSPEND_RESUME: + /* Test: wait for 15secs -> suspend -> 15secs delay -> resume */ + msleep(15 * 1000); + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_SUSPEND, portnum, + NULL, 0, 1000); + if (ret < 0) + break; + + msleep(15 * 1000); + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_SUSPEND, portnum, + NULL, 0, 1000); + break; + case TEST_SINGLE_STEP_GET_DEV_DESC: + /* Test: wait for 15secs -> GetDescriptor request */ + msleep(15 * 1000); + buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, + USB_DT_DEVICE << 8, 0, + buf, USB_DT_DEVICE_SIZE, + USB_CTRL_GET_TIMEOUT); + kfree(buf); + break; + case TEST_SINGLE_STEP_SET_FEATURE: + /* + * GetDescriptor SETUP request -> 15secs delay -> IN & STATUS + * + * Note, this test is only supported on root hubs since the + * SetPortFeature handling can only be done inside the HCD's + * hub_control callback function. + */ + if (hub_udev != dev->bus->root_hub) { + dev_err(&intf->dev, "SINGLE_STEP_SET_FEATURE test only supported on root hub\n"); + break; + } + + ret = usb_control_msg(hub_udev, usb_sndctrlpipe(hub_udev, 0), + USB_REQ_SET_FEATURE, USB_RT_PORT, + USB_PORT_FEAT_TEST, + (6 << 8) | portnum, + NULL, 0, 60 * 1000); + + break; + default: + dev_err(&intf->dev, "%s: unsupported PID: 0x%x\n", + __func__, test_pid); + } + + return (ret < 0) ? ret : 0; +} + +static void ehset_disconnect(struct usb_interface *intf) +{ +} + +static const struct usb_device_id ehset_id_table[] = { + { USB_DEVICE(0x1a0a, TEST_SE0_NAK_PID) }, + { USB_DEVICE(0x1a0a, TEST_J_PID) }, + { USB_DEVICE(0x1a0a, TEST_K_PID) }, + { USB_DEVICE(0x1a0a, TEST_PACKET_PID) }, + { USB_DEVICE(0x1a0a, TEST_HS_HOST_PORT_SUSPEND_RESUME) }, + { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_GET_DEV_DESC) }, + { USB_DEVICE(0x1a0a, TEST_SINGLE_STEP_SET_FEATURE) }, + { } /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, ehset_id_table); + +static struct usb_driver ehset_driver = { + .name = "usb_ehset_test", + .probe = ehset_probe, + .disconnect = ehset_disconnect, + .id_table = ehset_id_table, +}; + +module_usb_driver(ehset_driver); + +MODULE_DESCRIPTION("USB Driver for EHSET Test Fixture"); +MODULE_LICENSE("GPL v2"); |