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-rw-r--r--include/linux/device.h5
-rw-r--r--include/linux/usb.h11
-rw-r--r--include/linux/usb/composite.h6
-rw-r--r--include/linux/usb/gadget.h20
-rw-r--r--include/linux/usb/hcd.h5
-rw-r--r--include/linux/usb/msm_hsusb_hw.h1
-rw-r--r--include/linux/usb/musb.h2
-rw-r--r--include/linux/usb/of.h7
-rw-r--r--include/linux/usb/otg-fsm.h15
-rw-r--r--include/linux/usb/renesas_usbhs.h1
-rw-r--r--include/linux/usb/storage.h12
-rw-r--r--include/uapi/linux/usb/ch11.h21
-rw-r--r--include/uapi/linux/usb/ch9.h36
-rw-r--r--include/uapi/linux/usb/tmc.h29
-rw-r--r--include/uapi/linux/usbdevice_fs.h3
15 files changed, 157 insertions, 17 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index 6d6f1fec092f..2d0e6e541d52 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -958,6 +958,11 @@ static inline void device_lock(struct device *dev)
mutex_lock(&dev->mutex);
}
+static inline int device_lock_interruptible(struct device *dev)
+{
+ return mutex_lock_interruptible(&dev->mutex);
+}
+
static inline int device_trylock(struct device *dev)
{
return mutex_trylock(&dev->mutex);
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 89533ba38691..6a9a0c28415d 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -50,6 +50,7 @@ struct ep_device;
* struct usb_host_endpoint - host-side endpoint descriptor and queue
* @desc: descriptor for this endpoint, wMaxPacketSize in native byteorder
* @ss_ep_comp: SuperSpeed companion descriptor for this endpoint
+ * @ssp_isoc_ep_comp: SuperSpeedPlus isoc companion descriptor for this endpoint
* @urb_list: urbs queued to this endpoint; maintained by usbcore
* @hcpriv: for use by HCD; typically holds hardware dma queue head (QH)
* with one or more transfer descriptors (TDs) per urb
@@ -65,6 +66,7 @@ struct ep_device;
struct usb_host_endpoint {
struct usb_endpoint_descriptor desc;
struct usb_ss_ep_comp_descriptor ss_ep_comp;
+ struct usb_ssp_isoc_ep_comp_descriptor ssp_isoc_ep_comp;
struct list_head urb_list;
void *hcpriv;
struct ep_device *ep_dev; /* For sysfs info */
@@ -330,6 +332,7 @@ struct usb_host_bos {
struct usb_ss_cap_descriptor *ss_cap;
struct usb_ssp_cap_descriptor *ssp_cap;
struct usb_ss_container_id_descriptor *ss_id;
+ struct usb_ptm_cap_descriptor *ptm_cap;
};
int __usb_get_extra_descriptor(char *buffer, unsigned size,
@@ -375,7 +378,6 @@ struct usb_bus {
struct usb_devmap devmap; /* device address allocation map */
struct usb_device *root_hub; /* Root hub */
struct usb_bus *hs_companion; /* Companion EHCI bus, if any */
- struct list_head bus_list; /* list of busses */
struct mutex usb_address0_mutex; /* unaddressed device mutex */
@@ -642,9 +644,10 @@ extern struct usb_device *usb_hub_find_child(struct usb_device *hdev,
if (!child) continue; else
/* USB device locking */
-#define usb_lock_device(udev) device_lock(&(udev)->dev)
-#define usb_unlock_device(udev) device_unlock(&(udev)->dev)
-#define usb_trylock_device(udev) device_trylock(&(udev)->dev)
+#define usb_lock_device(udev) device_lock(&(udev)->dev)
+#define usb_unlock_device(udev) device_unlock(&(udev)->dev)
+#define usb_lock_device_interruptible(udev) device_lock_interruptible(&(udev)->dev)
+#define usb_trylock_device(udev) device_trylock(&(udev)->dev)
extern int usb_lock_device_for_reset(struct usb_device *udev,
const struct usb_interface *iface);
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 1074b8921a5d..2b81b24eb5aa 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -126,6 +126,10 @@ struct usb_os_desc_table {
* string identifiers assigned during @bind(). If this
* pointer is null after initiation, the function will not
* be available at super speed.
+ * @ssp_descriptors: Table of super speed plus descriptors, using
+ * interface and string identifiers assigned during @bind(). If
+ * this pointer is null after initiation, the function will not
+ * be available at super speed plus.
* @config: assigned when @usb_add_function() is called; this is the
* configuration with which this function is associated.
* @os_desc_table: Table of (interface id, os descriptors) pairs. The function
@@ -186,6 +190,7 @@ struct usb_function {
struct usb_descriptor_header **fs_descriptors;
struct usb_descriptor_header **hs_descriptors;
struct usb_descriptor_header **ss_descriptors;
+ struct usb_descriptor_header **ssp_descriptors;
struct usb_configuration *config;
@@ -317,6 +322,7 @@ struct usb_configuration {
unsigned superspeed:1;
unsigned highspeed:1;
unsigned fullspeed:1;
+ unsigned superspeed_plus:1;
struct usb_function *interface[MAX_CONFIG_INTERFACES];
};
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index d82d0068872b..5d4e151c49bf 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -595,6 +595,10 @@ struct usb_gadget_ops {
* only supports HNP on a different root port.
* @b_hnp_enable: OTG device feature flag, indicating that the A-Host
* enabled HNP support.
+ * @hnp_polling_support: OTG device feature flag, indicating if the OTG device
+ * in peripheral mode can support HNP polling.
+ * @host_request_flag: OTG device feature flag, indicating if A-Peripheral
+ * or B-Peripheral wants to take host role.
* @quirk_ep_out_aligned_size: epout requires buffer size to be aligned to
* MaxPacketSize.
* @is_selfpowered: if the gadget is self-powered.
@@ -642,6 +646,8 @@ struct usb_gadget {
unsigned b_hnp_enable:1;
unsigned a_hnp_support:1;
unsigned a_alt_hnp_support:1;
+ unsigned hnp_polling_support:1;
+ unsigned host_request_flag:1;
unsigned quirk_ep_out_aligned_size:1;
unsigned quirk_altset_not_supp:1;
unsigned quirk_stall_not_supp:1;
@@ -729,6 +735,16 @@ static inline int gadget_is_superspeed(struct usb_gadget *g)
}
/**
+ * gadget_is_superspeed_plus() - return true if the hardware handles
+ * superspeed plus
+ * @g: controller that might support superspeed plus
+ */
+static inline int gadget_is_superspeed_plus(struct usb_gadget *g)
+{
+ return g->max_speed >= USB_SPEED_SUPER_PLUS;
+}
+
+/**
* gadget_is_otg - return true iff the hardware is OTG-ready
* @g: controller that might have a Mini-AB connector
*
@@ -1126,6 +1142,7 @@ extern int usb_add_gadget_udc_release(struct device *parent,
struct usb_gadget *gadget, void (*release)(struct device *dev));
extern int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget);
extern void usb_del_gadget_udc(struct usb_gadget *gadget);
+extern char *usb_get_gadget_udc_name(void);
/*-------------------------------------------------------------------------*/
@@ -1194,7 +1211,8 @@ struct usb_function;
int usb_assign_descriptors(struct usb_function *f,
struct usb_descriptor_header **fs,
struct usb_descriptor_header **hs,
- struct usb_descriptor_header **ss);
+ struct usb_descriptor_header **ss,
+ struct usb_descriptor_header **ssp);
void usb_free_all_descriptors(struct usb_function *f);
struct usb_descriptor_header *usb_otg_descriptor_alloc(
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 4dcf8446dbcd..b98f831dcda3 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -23,6 +23,7 @@
#include <linux/rwsem.h>
#include <linux/interrupt.h>
+#include <linux/idr.h>
#define MAX_TOPO_LEVEL 6
@@ -630,8 +631,8 @@ extern void usb_set_device_state(struct usb_device *udev,
/* exported only within usbcore */
-extern struct list_head usb_bus_list;
-extern struct mutex usb_bus_list_lock;
+extern struct idr usb_bus_idr;
+extern struct mutex usb_bus_idr_lock;
extern wait_queue_head_t usb_kill_urb_queue;
diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h
index e159b39f67a2..974c3796a23f 100644
--- a/include/linux/usb/msm_hsusb_hw.h
+++ b/include/linux/usb/msm_hsusb_hw.h
@@ -22,6 +22,7 @@
#define USB_AHBBURST (MSM_USB_BASE + 0x0090)
#define USB_AHBMODE (MSM_USB_BASE + 0x0098)
#define USB_GENCONFIG_2 (MSM_USB_BASE + 0x00a0)
+#define ULPI_TX_PKT_EN_CLR_FIX BIT(19)
#define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index 96ddfb7ab018..0b3da40a525e 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -124,7 +124,7 @@ struct musb_hdrc_platform_data {
int (*set_power)(int state);
/* MUSB configuration-specific details */
- struct musb_hdrc_config *config;
+ const struct musb_hdrc_config *config;
/* Architecture specific board data */
void *board_data;
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index 974bce93aa28..de3237fce6b2 100644
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -16,6 +16,8 @@ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *phy_np);
bool of_usb_host_tpl_support(struct device_node *np);
int of_usb_update_otg_caps(struct device_node *np,
struct usb_otg_caps *otg_caps);
+struct device_node *usb_of_get_child_node(struct device_node *parent,
+ int portnum);
#else
static inline enum usb_dr_mode
of_usb_get_dr_mode_by_phy(struct device_node *phy_np)
@@ -31,6 +33,11 @@ static inline int of_usb_update_otg_caps(struct device_node *np,
{
return 0;
}
+static inline struct device_node *usb_of_get_child_node
+ (struct device_node *parent, int portnum)
+{
+ return NULL;
+}
#endif
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)
diff --git a/include/linux/usb/otg-fsm.h b/include/linux/usb/otg-fsm.h
index f728f1854829..24198e16f849 100644
--- a/include/linux/usb/otg-fsm.h
+++ b/include/linux/usb/otg-fsm.h
@@ -40,6 +40,18 @@
#define PROTO_HOST (1)
#define PROTO_GADGET (2)
+#define OTG_STS_SELECTOR 0xF000 /* OTG status selector, according to
+ * OTG and EH 2.0 Chapter 6.2.3
+ * Table:6-4
+ */
+
+#define HOST_REQUEST_FLAG 1 /* Host request flag, according to
+ * OTG and EH 2.0 Charpter 6.2.3
+ * Table:6-5
+ */
+
+#define T_HOST_REQ_POLL (1500) /* 1500ms, HNP polling interval */
+
enum otg_fsm_timer {
/* Standard OTG timers */
A_WAIT_VRISE,
@@ -48,6 +60,7 @@ enum otg_fsm_timer {
A_AIDL_BDIS,
B_ASE0_BRST,
A_BIDL_ADIS,
+ B_AIDL_BDIS,
/* Auxiliary timers */
B_SE0_SRP,
@@ -119,6 +132,8 @@ struct otg_fsm {
/* Current usb protocol used: 0:undefine; 1:host; 2:client */
int protocol;
struct mutex lock;
+ u8 *host_req_flag;
+ struct delayed_work hnp_polling_work;
};
struct otg_fsm_ops {
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 4db191fe8c2c..00a47d058d83 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -184,6 +184,7 @@ struct renesas_usbhs_driver_param {
};
#define USBHS_TYPE_RCAR_GEN2 1
+#define USBHS_TYPE_RCAR_GEN3 2
/*
* option:
diff --git a/include/linux/usb/storage.h b/include/linux/usb/storage.h
index cb33fff2ba0b..305ee8db7faf 100644
--- a/include/linux/usb/storage.h
+++ b/include/linux/usb/storage.h
@@ -45,9 +45,9 @@
#define USB_PR_DEVICE 0xff /* Use device's value */
- /*
- * Bulk only data structures
- */
+/*
+ * Bulk only data structures
+ */
/* command block wrapper */
struct bulk_cb_wrap {
@@ -56,18 +56,18 @@ struct bulk_cb_wrap {
__le32 DataTransferLength; /* size of data */
__u8 Flags; /* direction in bit 0 */
__u8 Lun; /* LUN normally 0 */
- __u8 Length; /* of of the CDB */
+ __u8 Length; /* length of the CDB */
__u8 CDB[16]; /* max command */
};
#define US_BULK_CB_WRAP_LEN 31
-#define US_BULK_CB_SIGN 0x43425355 /*spells out USBC */
+#define US_BULK_CB_SIGN 0x43425355 /* spells out 'USBC' */
#define US_BULK_FLAG_IN (1 << 7)
#define US_BULK_FLAG_OUT 0
/* command status wrapper */
struct bulk_cs_wrap {
- __le32 Signature; /* should = 'USBS' */
+ __le32 Signature; /* contains 'USBS' */
__u32 Tag; /* same as original command */
__le32 Residue; /* amount not transferred */
__u8 Status; /* see below */
diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h
index 331499d597fa..361297e96f58 100644
--- a/include/uapi/linux/usb/ch11.h
+++ b/include/uapi/linux/usb/ch11.h
@@ -30,6 +30,14 @@
#define USB_RT_PORT (USB_TYPE_CLASS | USB_RECIP_OTHER)
/*
+ * Port status type for GetPortStatus requests added in USB 3.1
+ * See USB 3.1 spec Table 10-12
+ */
+#define HUB_PORT_STATUS 0
+#define HUB_PORT_PD_STATUS 1
+#define HUB_EXT_PORT_STATUS 2
+
+/*
* Hub class requests
* See USB 2.0 spec Table 11-16
*/
@@ -97,10 +105,13 @@
/*
* Hub Status and Hub Change results
* See USB 2.0 spec Table 11-19 and Table 11-20
+ * USB 3.1 extends the port status request and may return 4 additional bytes.
+ * See USB 3.1 spec section 10.16.2.6 Table 10-12 and 10-15
*/
struct usb_port_status {
__le16 wPortStatus;
__le16 wPortChange;
+ __le32 dwExtPortStatus;
} __attribute__ ((packed));
/*
@@ -173,6 +184,16 @@ struct usb_port_status {
#define USB_PORT_STAT_C_CONFIG_ERROR 0x0080
/*
+ * USB 3.1 dwExtPortStatus field masks
+ * See USB 3.1 spec 10.16.2.6.3 Table 10-15
+ */
+
+#define USB_EXT_PORT_STAT_RX_SPEED_ID 0x0000000f
+#define USB_EXT_PORT_STAT_TX_SPEED_ID 0x000000f0
+#define USB_EXT_PORT_STAT_RX_LANES 0x00000f00
+#define USB_EXT_PORT_STAT_TX_LANES 0x0000f000
+
+/*
* wHubCharacteristics (masks)
* See USB 2.0 spec Table 11-13, offset 3
*/
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index 4338eb7b09b3..06d6c6228a7a 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -234,6 +234,8 @@ struct usb_ctrlrequest {
#define USB_DT_PIPE_USAGE 0x24
/* From the USB 3.0 spec */
#define USB_DT_SS_ENDPOINT_COMP 0x30
+/* From the USB 3.1 spec */
+#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
/* Conventional codes for class-specific descriptors. The convention is
* defined in the USB "Common Class" Spec (3.11). Individual class specs
@@ -613,6 +615,20 @@ static inline int usb_endpoint_interrupt_type(
/*-------------------------------------------------------------------------*/
+/* USB_DT_SSP_ISOC_ENDPOINT_COMP: SuperSpeedPlus Isochronous Endpoint Companion
+ * descriptor
+ */
+struct usb_ssp_isoc_ep_comp_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __le16 wReseved;
+ __le32 dwBytesPerInterval;
+} __attribute__ ((packed));
+
+#define USB_DT_SSP_ISOC_EP_COMP_SIZE 8
+
+/*-------------------------------------------------------------------------*/
+
/* USB_DT_SS_ENDPOINT_COMP: SuperSpeed Endpoint Companion descriptor */
struct usb_ss_ep_comp_descriptor {
__u8 bLength;
@@ -646,6 +662,8 @@ usb_ss_max_streams(const struct usb_ss_ep_comp_descriptor *comp)
/* Bits 1:0 of bmAttributes if this is an isoc endpoint */
#define USB_SS_MULT(p) (1 + ((p) & 0x3))
+/* Bit 7 of bmAttributes if a SSP isoc endpoint companion descriptor exists */
+#define USB_SS_SSP_ISOC_COMP(p) ((p) & (1 << 7))
/*-------------------------------------------------------------------------*/
@@ -690,6 +708,7 @@ struct usb_otg20_descriptor {
#define USB_OTG_HNP (1 << 1) /* swap host/device roles */
#define USB_OTG_ADP (1 << 2) /* support ADP */
+#define OTG_STS_SELECTOR 0xF000 /* OTG status selector */
/*-------------------------------------------------------------------------*/
/* USB_DT_DEBUG: for special highspeed devices, replacing serial console */
@@ -894,6 +913,22 @@ struct usb_ssp_cap_descriptor {
#define USB_SSP_SUBLINK_SPEED_LSM (0xff << 16) /* Lanespeed mantissa */
} __attribute__((packed));
+/*
+ * Precision time measurement capability descriptor: advertised by devices and
+ * hubs that support PTM
+ */
+#define USB_PTM_CAP_TYPE 0xb
+struct usb_ptm_cap_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDevCapabilityType;
+} __attribute__((packed));
+
+/*
+ * The size of the descriptor for the Sublink Speed Attribute Count
+ * (SSAC) specified in bmAttributes[4:0].
+ */
+#define USB_DT_USB_SSP_CAP_SIZE(ssac) (16 + ssac * 4)
/*-------------------------------------------------------------------------*/
@@ -954,6 +989,7 @@ enum usb_device_speed {
USB_SPEED_HIGH, /* usb 2.0 */
USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
USB_SPEED_SUPER, /* usb 3.0 */
+ USB_SPEED_SUPER_PLUS, /* usb 3.1 */
};
diff --git a/include/uapi/linux/usb/tmc.h b/include/uapi/linux/usb/tmc.h
index c045ae12556c..2e59d9c50b8d 100644
--- a/include/uapi/linux/usb/tmc.h
+++ b/include/uapi/linux/usb/tmc.h
@@ -2,12 +2,14 @@
* Copyright (C) 2007 Stefan Kopp, Gechingen, Germany
* Copyright (C) 2008 Novell, Inc.
* Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (C) 2015 Dave Penkler <dpenkler@gmail.com>
*
* This file holds USB constants defined by the USB Device Class
- * Definition for Test and Measurement devices published by the USB-IF.
+ * and USB488 Subclass Definitions for Test and Measurement devices
+ * published by the USB-IF.
*
- * It also has the ioctl definitions for the usbtmc kernel driver that
- * userspace needs to know about.
+ * It also has the ioctl and capability definitions for the
+ * usbtmc kernel driver that userspace needs to know about.
*/
#ifndef __LINUX_USB_TMC_H
@@ -30,6 +32,10 @@
#define USBTMC_REQUEST_CHECK_CLEAR_STATUS 6
#define USBTMC_REQUEST_GET_CAPABILITIES 7
#define USBTMC_REQUEST_INDICATOR_PULSE 64
+#define USBTMC488_REQUEST_READ_STATUS_BYTE 128
+#define USBTMC488_REQUEST_REN_CONTROL 160
+#define USBTMC488_REQUEST_GOTO_LOCAL 161
+#define USBTMC488_REQUEST_LOCAL_LOCKOUT 162
/* Request values for USBTMC driver's ioctl entry point */
#define USBTMC_IOC_NR 91
@@ -39,5 +45,22 @@
#define USBTMC_IOCTL_ABORT_BULK_IN _IO(USBTMC_IOC_NR, 4)
#define USBTMC_IOCTL_CLEAR_OUT_HALT _IO(USBTMC_IOC_NR, 6)
#define USBTMC_IOCTL_CLEAR_IN_HALT _IO(USBTMC_IOC_NR, 7)
+#define USBTMC488_IOCTL_GET_CAPS _IOR(USBTMC_IOC_NR, 17, unsigned char)
+#define USBTMC488_IOCTL_READ_STB _IOR(USBTMC_IOC_NR, 18, unsigned char)
+#define USBTMC488_IOCTL_REN_CONTROL _IOW(USBTMC_IOC_NR, 19, unsigned char)
+#define USBTMC488_IOCTL_GOTO_LOCAL _IO(USBTMC_IOC_NR, 20)
+#define USBTMC488_IOCTL_LOCAL_LOCKOUT _IO(USBTMC_IOC_NR, 21)
+
+/* Driver encoded usb488 capabilities */
+#define USBTMC488_CAPABILITY_TRIGGER 1
+#define USBTMC488_CAPABILITY_SIMPLE 2
+#define USBTMC488_CAPABILITY_REN_CONTROL 2
+#define USBTMC488_CAPABILITY_GOTO_LOCAL 2
+#define USBTMC488_CAPABILITY_LOCAL_LOCKOUT 2
+#define USBTMC488_CAPABILITY_488_DOT_2 4
+#define USBTMC488_CAPABILITY_DT1 16
+#define USBTMC488_CAPABILITY_RL1 32
+#define USBTMC488_CAPABILITY_SR1 64
+#define USBTMC488_CAPABILITY_FULL_SCPI 128
#endif
diff --git a/include/uapi/linux/usbdevice_fs.h b/include/uapi/linux/usbdevice_fs.h
index 019ba1e0799a..a8653a6f40df 100644
--- a/include/uapi/linux/usbdevice_fs.h
+++ b/include/uapi/linux/usbdevice_fs.h
@@ -134,6 +134,8 @@ struct usbdevfs_hub_portinfo {
#define USBDEVFS_CAP_NO_PACKET_SIZE_LIM 0x04
#define USBDEVFS_CAP_BULK_SCATTER_GATHER 0x08
#define USBDEVFS_CAP_REAP_AFTER_DISCONNECT 0x10
+#define USBDEVFS_CAP_MMAP 0x20
+#define USBDEVFS_CAP_DROP_PRIVILEGES 0x40
/* USBDEVFS_DISCONNECT_CLAIM flags & struct */
@@ -187,5 +189,6 @@ struct usbdevfs_streams {
#define USBDEVFS_DISCONNECT_CLAIM _IOR('U', 27, struct usbdevfs_disconnect_claim)
#define USBDEVFS_ALLOC_STREAMS _IOR('U', 28, struct usbdevfs_streams)
#define USBDEVFS_FREE_STREAMS _IOR('U', 29, struct usbdevfs_streams)
+#define USBDEVFS_DROP_PRIVILEGES _IOW('U', 30, __u32)
#endif /* _UAPI_LINUX_USBDEVICE_FS_H */