Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 474 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/kinect.c b/drivers/media/usb/gspca/kinect.c
new file mode 100644
index 000000000..57ea65863
--- /dev/null
+++ b/drivers/media/usb/gspca/kinect.c
@@ -0,0 +1,474 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * kinect sensor device camera, gspca driver
+ *
+ * Copyright (C) 2011  Antonio Ospite <ospite@studenti.unina.it>
+ *
+ * Based on the OpenKinect project and libfreenect
+ * http://openkinect.org/wiki/Init_Analysis
+ *
+ * Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect
+ * sensor device which I tested the driver on.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define MODULE_NAME "kinect"
+
+#include "gspca.h"
+
+#define CTRL_TIMEOUT 500
+
+MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
+MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+static bool depth_mode;
+
+struct pkt_hdr {
+	uint8_t magic[2];
+	uint8_t pad;
+	uint8_t flag;
+	uint8_t unk1;
+	uint8_t seq;
+	uint8_t unk2;
+	uint8_t unk3;
+	uint32_t timestamp;
+};
+
+struct cam_hdr {
+	uint8_t magic[2];
+	__le16 len;
+	__le16 cmd;
+	__le16 tag;
+};
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev; /* !! must be the first item */
+	uint16_t cam_tag;           /* a sequence number for packets */
+	uint8_t stream_flag;        /* to identify different stream types */
+	uint8_t obuf[0x400];        /* output buffer for control commands */
+	uint8_t ibuf[0x200];        /* input buffer for control commands */
+};
+
+#define MODE_640x480   0x0001
+#define MODE_640x488   0x0002
+#define MODE_1280x1024 0x0004
+
+#define FORMAT_BAYER   0x0010
+#define FORMAT_UYVY    0x0020
+#define FORMAT_Y10B    0x0040
+
+#define FPS_HIGH       0x0100
+
+static const struct v4l2_pix_format depth_camera_mode[] = {
+	{640, 480, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
+	 .bytesperline = 640 * 10 / 8,
+	 .sizeimage =  640 * 480 * 10 / 8,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_640x488 | FORMAT_Y10B},
+};
+
+static const struct v4l2_pix_format video_camera_mode[] = {
+	{640, 480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
+	 .bytesperline = 640,
+	 .sizeimage = 640 * 480,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_640x480 | FORMAT_BAYER | FPS_HIGH},
+	{640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
+	 .bytesperline = 640 * 2,
+	 .sizeimage = 640 * 480 * 2,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_640x480 | FORMAT_UYVY},
+	{1280, 1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
+	 .bytesperline = 1280,
+	 .sizeimage = 1280 * 1024,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_1280x1024 | FORMAT_BAYER},
+	{640, 488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
+	 .bytesperline = 640 * 10 / 8,
+	 .sizeimage =  640 * 488 * 10 / 8,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_640x488 | FORMAT_Y10B | FPS_HIGH},
+	{1280, 1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
+	 .bytesperline = 1280 * 10 / 8,
+	 .sizeimage =  1280 * 1024 * 10 / 8,
+	 .colorspace = V4L2_COLORSPACE_SRGB,
+	 .priv = MODE_1280x1024 | FORMAT_Y10B},
+};
+
+static int kinect_write(struct usb_device *udev, uint8_t *data,
+			uint16_t wLength)
+{
+	return usb_control_msg(udev,
+			      usb_sndctrlpipe(udev, 0),
+			      0x00,
+			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      0, 0, data, wLength, CTRL_TIMEOUT);
+}
+
+static int kinect_read(struct usb_device *udev, uint8_t *data, uint16_t wLength)
+{
+	return usb_control_msg(udev,
+			      usb_rcvctrlpipe(udev, 0),
+			      0x00,
+			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      0, 0, data, wLength, CTRL_TIMEOUT);
+}
+
+static int send_cmd(struct gspca_dev *gspca_dev, uint16_t cmd, void *cmdbuf,
+		unsigned int cmd_len, void *replybuf, unsigned int reply_len)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct usb_device *udev = gspca_dev->dev;
+	int res, actual_len;
+	uint8_t *obuf = sd->obuf;
+	uint8_t *ibuf = sd->ibuf;
+	struct cam_hdr *chdr = (void *)obuf;
+	struct cam_hdr *rhdr = (void *)ibuf;
+
+	if (cmd_len & 1 || cmd_len > (0x400 - sizeof(*chdr))) {
+		pr_err("send_cmd: Invalid command length (0x%x)\n", cmd_len);
+		return -1;
+	}
+
+	chdr->magic[0] = 0x47;
+	chdr->magic[1] = 0x4d;
+	chdr->cmd = cpu_to_le16(cmd);
+	chdr->tag = cpu_to_le16(sd->cam_tag);
+	chdr->len = cpu_to_le16(cmd_len / 2);
+
+	memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len);
+
+	res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr));
+	gspca_dbg(gspca_dev, D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d\n",
+		  cmd,
+		  sd->cam_tag, cmd_len, res);
+	if (res < 0) {
+		pr_err("send_cmd: Output control transfer failed (%d)\n", res);
+		return res;
+	}
+
+	do {
+		actual_len = kinect_read(udev, ibuf, 0x200);
+	} while (actual_len == 0);
+	gspca_dbg(gspca_dev, D_USBO, "Control reply: %d\n", actual_len);
+	if (actual_len < (int)sizeof(*rhdr)) {
+		pr_err("send_cmd: Input control transfer failed (%d)\n",
+		       actual_len);
+		return actual_len < 0 ? actual_len : -EREMOTEIO;
+	}
+	actual_len -= sizeof(*rhdr);
+
+	if (rhdr->magic[0] != 0x52 || rhdr->magic[1] != 0x42) {
+		pr_err("send_cmd: Bad magic %02x %02x\n",
+		       rhdr->magic[0], rhdr->magic[1]);
+		return -1;
+	}
+	if (rhdr->cmd != chdr->cmd) {
+		pr_err("send_cmd: Bad cmd %02x != %02x\n",
+		       rhdr->cmd, chdr->cmd);
+		return -1;
+	}
+	if (rhdr->tag != chdr->tag) {
+		pr_err("send_cmd: Bad tag %04x != %04x\n",
+		       rhdr->tag, chdr->tag);
+		return -1;
+	}
+	if (le16_to_cpu(rhdr->len) != (actual_len/2)) {
+		pr_err("send_cmd: Bad len %04x != %04x\n",
+		       le16_to_cpu(rhdr->len), (int)(actual_len/2));
+		return -1;
+	}
+
+	if (actual_len > reply_len) {
+		pr_warn("send_cmd: Data buffer is %d bytes long, but got %d bytes\n",
+			reply_len, actual_len);
+		memcpy(replybuf, ibuf+sizeof(*rhdr), reply_len);
+	} else {
+		memcpy(replybuf, ibuf+sizeof(*rhdr), actual_len);
+	}
+
+	sd->cam_tag++;
+
+	return actual_len;
+}
+
+static int write_register(struct gspca_dev *gspca_dev, uint16_t reg,
+			uint16_t data)
+{
+	uint16_t reply[2];
+	__le16 cmd[2];
+	int res;
+
+	cmd[0] = cpu_to_le16(reg);
+	cmd[1] = cpu_to_le16(data);
+
+	gspca_dbg(gspca_dev, D_USBO, "Write Reg 0x%04x <= 0x%02x\n", reg, data);
+	res = send_cmd(gspca_dev, 0x03, cmd, 4, reply, 4);
+	if (res < 0)
+		return res;
+	if (res != 2) {
+		pr_warn("send_cmd returned %d [%04x %04x], 0000 expected\n",
+			res, reply[0], reply[1]);
+	}
+	return 0;
+}
+
+/* this function is called at probe time */
+static int sd_config_video(struct gspca_dev *gspca_dev,
+		     const struct usb_device_id *id)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct cam *cam;
+
+	sd->cam_tag = 0;
+
+	sd->stream_flag = 0x80;
+
+	cam = &gspca_dev->cam;
+
+	cam->cam_mode = video_camera_mode;
+	cam->nmodes = ARRAY_SIZE(video_camera_mode);
+
+	gspca_dev->xfer_ep = 0x81;
+
+#if 0
+	/* Setting those values is not needed for video stream */
+	cam->npkt = 15;
+	gspca_dev->pkt_size = 960 * 2;
+#endif
+
+	return 0;
+}
+
+static int sd_config_depth(struct gspca_dev *gspca_dev,
+		     const struct usb_device_id *id)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct cam *cam;
+
+	sd->cam_tag = 0;
+
+	sd->stream_flag = 0x70;
+
+	cam = &gspca_dev->cam;
+
+	cam->cam_mode = depth_camera_mode;
+	cam->nmodes = ARRAY_SIZE(depth_camera_mode);
+
+	gspca_dev->xfer_ep = 0x82;
+
+	return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+	gspca_dbg(gspca_dev, D_PROBE, "Kinect Camera device.\n");
+
+	return 0;
+}
+
+static int sd_start_video(struct gspca_dev *gspca_dev)
+{
+	int mode;
+	uint8_t fmt_reg, fmt_val;
+	uint8_t res_reg, res_val;
+	uint8_t fps_reg, fps_val;
+	uint8_t mode_val;
+
+	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
+
+	if (mode & FORMAT_Y10B) {
+		fmt_reg = 0x19;
+		res_reg = 0x1a;
+		fps_reg = 0x1b;
+		mode_val = 0x03;
+	} else {
+		fmt_reg = 0x0c;
+		res_reg = 0x0d;
+		fps_reg = 0x0e;
+		mode_val = 0x01;
+	}
+
+	/* format */
+	if (mode & FORMAT_UYVY)
+		fmt_val = 0x05;
+	else
+		fmt_val = 0x00;
+
+	if (mode & MODE_1280x1024)
+		res_val = 0x02;
+	else
+		res_val = 0x01;
+
+	if (mode & FPS_HIGH)
+		fps_val = 0x1e;
+	else
+		fps_val = 0x0f;
+
+
+	/* turn off IR-reset function */
+	write_register(gspca_dev, 0x105, 0x00);
+
+	/* Reset video stream */
+	write_register(gspca_dev, 0x05, 0x00);
+
+	/* Due to some ridiculous condition in the firmware, we have to start
+	 * and stop the depth stream before the camera will hand us 1280x1024
+	 * IR.  This is a stupid workaround, but we've yet to find a better
+	 * solution.
+	 *
+	 * Thanks to Drew Fisher for figuring this out.
+	 */
+	if (mode & (FORMAT_Y10B | MODE_1280x1024)) {
+		write_register(gspca_dev, 0x13, 0x01);
+		write_register(gspca_dev, 0x14, 0x1e);
+		write_register(gspca_dev, 0x06, 0x02);
+		write_register(gspca_dev, 0x06, 0x00);
+	}
+
+	write_register(gspca_dev, fmt_reg, fmt_val);
+	write_register(gspca_dev, res_reg, res_val);
+	write_register(gspca_dev, fps_reg, fps_val);
+
+	/* Start video stream */
+	write_register(gspca_dev, 0x05, mode_val);
+
+	/* disable Hflip */
+	write_register(gspca_dev, 0x47, 0x00);
+
+	return 0;
+}
+
+static int sd_start_depth(struct gspca_dev *gspca_dev)
+{
+	/* turn off IR-reset function */
+	write_register(gspca_dev, 0x105, 0x00);
+
+	/* reset depth stream */
+	write_register(gspca_dev, 0x06, 0x00);
+	/* Depth Stream Format 0x03: 11 bit stream | 0x02: 10 bit */
+	write_register(gspca_dev, 0x12, 0x02);
+	/* Depth Stream Resolution 1: standard (640x480) */
+	write_register(gspca_dev, 0x13, 0x01);
+	/* Depth Framerate / 0x1e (30): 30 fps */
+	write_register(gspca_dev, 0x14, 0x1e);
+	/* Depth Stream Control  / 2: Open Depth Stream */
+	write_register(gspca_dev, 0x06, 0x02);
+	/* disable depth hflip / LSB = 0: Smoothing Disabled */
+	write_register(gspca_dev, 0x17, 0x00);
+
+	return 0;
+}
+
+static void sd_stopN_video(struct gspca_dev *gspca_dev)
+{
+	/* reset video stream */
+	write_register(gspca_dev, 0x05, 0x00);
+}
+
+static void sd_stopN_depth(struct gspca_dev *gspca_dev)
+{
+	/* reset depth stream */
+	write_register(gspca_dev, 0x06, 0x00);
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	struct pkt_hdr *hdr = (void *)__data;
+	uint8_t *data = __data + sizeof(*hdr);
+	int datalen = len - sizeof(*hdr);
+
+	uint8_t sof = sd->stream_flag | 1;
+	uint8_t mof = sd->stream_flag | 2;
+	uint8_t eof = sd->stream_flag | 5;
+
+	if (len < 12)
+		return;
+
+	if (hdr->magic[0] != 'R' || hdr->magic[1] != 'B') {
+		pr_warn("[Stream %02x] Invalid magic %02x%02x\n",
+			sd->stream_flag, hdr->magic[0], hdr->magic[1]);
+		return;
+	}
+
+	if (hdr->flag == sof)
+		gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen);
+
+	else if (hdr->flag == mof)
+		gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);
+
+	else if (hdr->flag == eof)
+		gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
+
+	else
+		pr_warn("Packet type not recognized...\n");
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc_video = {
+	.name      = MODULE_NAME,
+	.config    = sd_config_video,
+	.init      = sd_init,
+	.start     = sd_start_video,
+	.stopN     = sd_stopN_video,
+	.pkt_scan  = sd_pkt_scan,
+	/*
+	.get_streamparm = sd_get_streamparm,
+	.set_streamparm = sd_set_streamparm,
+	*/
+};
+static const struct sd_desc sd_desc_depth = {
+	.name      = MODULE_NAME,
+	.config    = sd_config_depth,
+	.init      = sd_init,
+	.start     = sd_start_depth,
+	.stopN     = sd_stopN_depth,
+	.pkt_scan  = sd_pkt_scan,
+	/*
+	.get_streamparm = sd_get_streamparm,
+	.set_streamparm = sd_set_streamparm,
+	*/
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x045e, 0x02ae)},
+	{USB_DEVICE(0x045e, 0x02bf)},
+	{}
+};
+
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	if (depth_mode)
+		return gspca_dev_probe(intf, id, &sd_desc_depth,
+				       sizeof(struct sd), THIS_MODULE);
+	else
+		return gspca_dev_probe(intf, id, &sd_desc_video,
+				       sizeof(struct sd), THIS_MODULE);
+}
+
+static struct usb_driver sd_driver = {
+	.name       = MODULE_NAME,
+	.id_table   = device_table,
+	.probe      = sd_probe,
+	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend    = gspca_suspend,
+	.resume     = gspca_resume,
+	.reset_resume = gspca_resume,
+#endif
+};
+
+module_usb_driver(sd_driver);
+
+module_param(depth_mode, bool, 0644);
+MODULE_PARM_DESC(depth_mode, "0=video 1=depth");