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, 727 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/touptek.c b/drivers/media/usb/gspca/touptek.c
new file mode 100644
index 000000000..dde311c25
--- /dev/null
+++ b/drivers/media/usb/gspca/touptek.c
@@ -0,0 +1,727 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ToupTek UCMOS / AmScope MU series camera driver
+ * TODO: contrast with ScopeTek / AmScope MDC cameras
+ *
+ * Copyright (C) 2012-2014 John McMaster <JohnDMcMaster@gmail.com>
+ *
+ * Special thanks to Bushing for helping with the decrypt algorithm and
+ * Sean O'Sullivan / the Rensselaer Center for Open Source
+ * Software (RCOS) for helping me learn kernel development
+ */
+
+#include "gspca.h"
+
+#define MODULE_NAME "touptek"
+
+MODULE_AUTHOR("John McMaster");
+MODULE_DESCRIPTION("ToupTek UCMOS / Amscope MU microscope camera driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Exposure reg is linear with exposure time
+ * Exposure (sec), E (reg)
+ * 0.000400, 0x0002
+ * 0.001000, 0x0005
+ * 0.005000, 0x0019
+ * 0.020000, 0x0064
+ * 0.080000, 0x0190
+ * 0.400000, 0x07D0
+ * 1.000000, 0x1388
+ * 2.000000, 0x2710
+ *
+ * Three gain stages
+ * 0x1000: master channel enable bit
+ * 0x007F: low gain bits
+ * 0x0080: medium gain bit
+ * 0x0100: high gain bit
+ * gain = enable * (1 + regH) * (1 + regM) * z * regL
+ *
+ * Gain implementation
+ * Want to do something similar to mt9v011.c's set_balance
+ *
+ * Gain does not vary with resolution (checked 640x480 vs 1600x1200)
+ *
+ * Constant derivation:
+ *
+ * Raw data:
+ * Gain,   GTOP,   B,	  R,	  GBOT
+ * 1.00,   0x105C, 0x1068, 0x10C8, 0x105C
+ * 1.20,   0x106E, 0x107E, 0x10D6, 0x106E
+ * 1.40,   0x10C0, 0x10CA, 0x10E5, 0x10C0
+ * 1.60,   0x10C9, 0x10D4, 0x10F3, 0x10C9
+ * 1.80,   0x10D2, 0x10DE, 0x11C1, 0x10D2
+ * 2.00,   0x10DC, 0x10E9, 0x11C8, 0x10DC
+ * 2.20,   0x10E5, 0x10F3, 0x11CF, 0x10E5
+ * 2.40,   0x10EE, 0x10FE, 0x11D7, 0x10EE
+ * 2.60,   0x10F7, 0x11C4, 0x11DE, 0x10F7
+ * 2.80,   0x11C0, 0x11CA, 0x11E5, 0x11C0
+ * 3.00,   0x11C5, 0x11CF, 0x11ED, 0x11C5
+ *
+ * zR = 0.0069605943152454778
+ *	about 3/431 = 0.0069605568445475635
+ * zB = 0.0095695970695970703
+ *	about 6/627 = 0.0095693779904306216
+ * zG = 0.010889328063241107
+ *	about 6/551 = 0.010889292196007259
+ * about 10 bits for constant + 7 bits for value => at least 17 bit
+ * intermediate with 32 bit ints should be fine for overflow etc
+ * Essentially gains are in range 0-0x001FF
+ *
+ * However, V4L expects a main gain channel + R and B balance
+ * To keep things simple for now saturate the values of balance is too high/low
+ * This isn't really ideal but easy way to fit the Linux model
+ *
+ * Converted using gain model turns out to be quite linear:
+ * Gain, GTOP, B, R, GBOT
+ * 1.00, 92, 104, 144, 92
+ * 1.20, 110, 126, 172, 110
+ * 1.40, 128, 148, 202, 128
+ * 1.60, 146, 168, 230, 146
+ * 1.80, 164, 188, 260, 164
+ * 2.00, 184, 210, 288, 184
+ * 2.20, 202, 230, 316, 202
+ * 2.40, 220, 252, 348, 220
+ * 2.60, 238, 272, 376, 238
+ * 2.80, 256, 296, 404, 256
+ * 3.00, 276, 316, 436, 276
+ *
+ * Maximum gain is 0x7FF * 2 * 2 => 0x1FFC (8188)
+ * or about 13 effective bits of gain
+ * The highest the commercial driver goes in my setup 436
+ * However, because could *maybe* damage circuits
+ * limit the gain until have a reason to go higher
+ * Solution: gain clipped and warning emitted
+ */
+#define GAIN_MAX		511
+
+/* Frame sync is a short read */
+#define BULK_SIZE		0x4000
+
+/* MT9E001 reg names to give a rough approximation */
+#define REG_COARSE_INTEGRATION_TIME_	0x3012
+#define REG_GROUPED_PARAMETER_HOLD_	0x3022
+#define REG_MODE_SELECT			0x0100
+#define REG_OP_SYS_CLK_DIV		0x030A
+#define REG_VT_SYS_CLK_DIV		0x0302
+#define REG_PRE_PLL_CLK_DIV		0x0304
+#define REG_VT_PIX_CLK_DIV		0x0300
+#define REG_OP_PIX_CLK_DIV		0x0308
+#define REG_PLL_MULTIPLIER		0x0306
+#define REG_COARSE_INTEGRATION_TIME_	0x3012
+#define REG_FRAME_LENGTH_LINES		0x0340
+#define REG_FRAME_LENGTH_LINES_		0x300A
+#define REG_GREEN1_GAIN			0x3056
+#define REG_GREEN2_GAIN			0x305C
+#define REG_GROUPED_PARAMETER_HOLD	0x0104
+#define REG_LINE_LENGTH_PCK_		0x300C
+#define REG_MODE_SELECT			0x0100
+#define REG_PLL_MULTIPLIER		0x0306
+#define REG_READ_MODE			0x3040
+#define REG_BLUE_GAIN			0x3058
+#define REG_RED_GAIN			0x305A
+#define REG_RESET_REGISTER		0x301A
+#define REG_SCALE_M			0x0404
+#define REG_SCALING_MODE		0x0400
+#define REG_SOFTWARE_RESET		0x0103
+#define REG_X_ADDR_END			0x0348
+#define REG_X_ADDR_START		0x0344
+#define REG_X_ADDR_START		0x0344
+#define REG_X_OUTPUT_SIZE		0x034C
+#define REG_Y_ADDR_END			0x034A
+#define REG_Y_ADDR_START		0x0346
+#define REG_Y_OUTPUT_SIZE		0x034E
+
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev;	/* !! must be the first item */
+	/* How many bytes this frame */
+	unsigned int this_f;
+
+	/*
+	Device has separate gains for each Bayer quadrant
+	V4L supports master gain which is referenced to G1/G2 and supplies
+	individual balance controls for R/B
+	*/
+	struct v4l2_ctrl *blue;
+	struct v4l2_ctrl *red;
+};
+
+/* Used to simplify reg write error handling */
+struct cmd {
+	u16 value;
+	u16 index;
+};
+
+static const struct v4l2_pix_format vga_mode[] = {
+	{800, 600,
+		V4L2_PIX_FMT_SGRBG8,
+		V4L2_FIELD_NONE,
+		.bytesperline = 800,
+		.sizeimage = 800 * 600,
+		.colorspace = V4L2_COLORSPACE_SRGB},
+	{1600, 1200,
+		V4L2_PIX_FMT_SGRBG8,
+		V4L2_FIELD_NONE,
+		.bytesperline = 1600,
+		.sizeimage = 1600 * 1200,
+		.colorspace = V4L2_COLORSPACE_SRGB},
+	{3264, 2448,
+		V4L2_PIX_FMT_SGRBG8,
+		V4L2_FIELD_NONE,
+		.bytesperline = 3264,
+		.sizeimage = 3264 * 2448,
+		.colorspace = V4L2_COLORSPACE_SRGB},
+};
+
+/*
+ * As there's no known frame sync, the only way to keep synced is to try hard
+ * to never miss any packets
+ */
+#if MAX_NURBS < 4
+#error "Not enough URBs in the gspca table"
+#endif
+
+static int val_reply(struct gspca_dev *gspca_dev, const char *reply, int rc)
+{
+	if (rc < 0) {
+		gspca_err(gspca_dev, "reply has error %d\n", rc);
+		return -EIO;
+	}
+	if (rc != 1) {
+		gspca_err(gspca_dev, "Bad reply size %d\n", rc);
+		return -EIO;
+	}
+	if (reply[0] != 0x08) {
+		gspca_err(gspca_dev, "Bad reply 0x%02x\n", (int)reply[0]);
+		return -EIO;
+	}
+	return 0;
+}
+
+static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
+{
+	char *buff = gspca_dev->usb_buf;
+	int rc;
+
+	gspca_dbg(gspca_dev, D_USBO,
+		  "reg_w bReq=0x0B, bReqT=0xC0, wVal=0x%04X, wInd=0x%04X\n\n",
+		  value, index);
+	rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),
+		0x0B, 0xC0, value, index, buff, 1, 500);
+	gspca_dbg(gspca_dev, D_USBO, "rc=%d, ret={0x%02x}\n", rc, (int)buff[0]);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "Failed reg_w(0x0B, 0xC0, 0x%04X, 0x%04X) w/ rc %d\n",
+			  value, index, rc);
+		gspca_dev->usb_err = rc;
+		return;
+	}
+	if (val_reply(gspca_dev, buff, rc)) {
+		gspca_err(gspca_dev, "Bad reply to reg_w(0x0B, 0xC0, 0x%04X, 0x%04X\n",
+			  value, index);
+		gspca_dev->usb_err = -EIO;
+	}
+}
+
+static void reg_w_buf(struct gspca_dev *gspca_dev,
+		const struct cmd *p, int l)
+{
+	do {
+		reg_w(gspca_dev, p->value, p->index);
+		p++;
+	} while (--l > 0);
+}
+
+static void setexposure(struct gspca_dev *gspca_dev, s32 val)
+{
+	u16 value;
+	unsigned int w = gspca_dev->pixfmt.width;
+
+	if (w == 800)
+		value = val * 5;
+	else if (w == 1600)
+		value = val * 3;
+	else if (w == 3264)
+		value = val * 3 / 2;
+	else {
+		gspca_err(gspca_dev, "Invalid width %u\n", w);
+		gspca_dev->usb_err = -EINVAL;
+		return;
+	}
+	gspca_dbg(gspca_dev, D_STREAM, "exposure: 0x%04X ms\n\n", value);
+	/* Wonder if there's a good reason for sending it twice */
+	/* probably not but leave it in because...why not */
+	reg_w(gspca_dev, value, REG_COARSE_INTEGRATION_TIME_);
+	reg_w(gspca_dev, value, REG_COARSE_INTEGRATION_TIME_);
+}
+
+static int gainify(int in)
+{
+	/*
+	 * TODO: check if there are any issues with corner cases
+	 * 0x000 (0):0x07F (127): regL
+	 * 0x080 (128) - 0x0FF (255): regM, regL
+	 * 0x100 (256) - max: regH, regM, regL
+	 */
+	if (in <= 0x7F)
+		return 0x1000 | in;
+	else if (in <= 0xFF)
+		return 0x1080 | in / 2;
+	else
+		return 0x1180 | in / 4;
+}
+
+static void setggain(struct gspca_dev *gspca_dev, u16 global_gain)
+{
+	u16 normalized;
+
+	normalized = gainify(global_gain);
+	gspca_dbg(gspca_dev, D_STREAM, "gain G1/G2 (0x%04X): 0x%04X (src 0x%04X)\n\n",
+		  REG_GREEN1_GAIN,
+		  normalized, global_gain);
+
+	reg_w(gspca_dev, normalized, REG_GREEN1_GAIN);
+	reg_w(gspca_dev, normalized, REG_GREEN2_GAIN);
+}
+
+static void setbgain(struct gspca_dev *gspca_dev,
+		u16 gain, u16 global_gain)
+{
+	u16 normalized;
+
+	normalized = global_gain +
+		((u32)global_gain) * gain / GAIN_MAX;
+	if (normalized > GAIN_MAX) {
+		gspca_dbg(gspca_dev, D_STREAM, "Truncating blue 0x%04X w/ value 0x%04X\n\n",
+			  GAIN_MAX, normalized);
+		normalized = GAIN_MAX;
+	}
+	normalized = gainify(normalized);
+	gspca_dbg(gspca_dev, D_STREAM, "gain B (0x%04X): 0x%04X w/ source 0x%04X\n\n",
+		  REG_BLUE_GAIN, normalized, gain);
+
+	reg_w(gspca_dev, normalized, REG_BLUE_GAIN);
+}
+
+static void setrgain(struct gspca_dev *gspca_dev,
+		u16 gain, u16 global_gain)
+{
+	u16 normalized;
+
+	normalized = global_gain +
+		((u32)global_gain) * gain / GAIN_MAX;
+	if (normalized > GAIN_MAX) {
+		gspca_dbg(gspca_dev, D_STREAM, "Truncating gain 0x%04X w/ value 0x%04X\n\n",
+			  GAIN_MAX, normalized);
+		normalized = GAIN_MAX;
+	}
+	normalized = gainify(normalized);
+	gspca_dbg(gspca_dev, D_STREAM, "gain R (0x%04X): 0x%04X w / source 0x%04X\n\n",
+		  REG_RED_GAIN, normalized, gain);
+
+	reg_w(gspca_dev, normalized, REG_RED_GAIN);
+}
+
+static void configure_wh(struct gspca_dev *gspca_dev)
+{
+	unsigned int w = gspca_dev->pixfmt.width;
+
+	gspca_dbg(gspca_dev, D_STREAM, "configure_wh\n\n");
+
+	if (w == 800) {
+		static const struct cmd reg_init_res[] = {
+			{0x0060, REG_X_ADDR_START},
+			{0x0CD9, REG_X_ADDR_END},
+			{0x0036, REG_Y_ADDR_START},
+			{0x098F, REG_Y_ADDR_END},
+			{0x07C7, REG_READ_MODE},
+		};
+
+		reg_w_buf(gspca_dev,
+			       reg_init_res, ARRAY_SIZE(reg_init_res));
+	} else if (w == 1600) {
+		static const struct cmd reg_init_res[] = {
+			{0x009C, REG_X_ADDR_START},
+			{0x0D19, REG_X_ADDR_END},
+			{0x0068, REG_Y_ADDR_START},
+			{0x09C5, REG_Y_ADDR_END},
+			{0x06C3, REG_READ_MODE},
+		};
+
+		reg_w_buf(gspca_dev,
+			       reg_init_res, ARRAY_SIZE(reg_init_res));
+	} else if (w == 3264) {
+		static const struct cmd reg_init_res[] = {
+			{0x00E8, REG_X_ADDR_START},
+			{0x0DA7, REG_X_ADDR_END},
+			{0x009E, REG_Y_ADDR_START},
+			{0x0A2D, REG_Y_ADDR_END},
+			{0x0241, REG_READ_MODE},
+		};
+
+		reg_w_buf(gspca_dev,
+			       reg_init_res, ARRAY_SIZE(reg_init_res));
+	} else {
+		gspca_err(gspca_dev, "bad width %u\n", w);
+		gspca_dev->usb_err = -EINVAL;
+		return;
+	}
+
+	reg_w(gspca_dev, 0x0000, REG_SCALING_MODE);
+	reg_w(gspca_dev, 0x0010, REG_SCALE_M);
+	reg_w(gspca_dev, w, REG_X_OUTPUT_SIZE);
+	reg_w(gspca_dev, gspca_dev->pixfmt.height, REG_Y_OUTPUT_SIZE);
+
+	if (w == 800) {
+		reg_w(gspca_dev, 0x0384, REG_FRAME_LENGTH_LINES_);
+		reg_w(gspca_dev, 0x0960, REG_LINE_LENGTH_PCK_);
+	} else if (w == 1600) {
+		reg_w(gspca_dev, 0x0640, REG_FRAME_LENGTH_LINES_);
+		reg_w(gspca_dev, 0x0FA0, REG_LINE_LENGTH_PCK_);
+	} else if (w == 3264) {
+		reg_w(gspca_dev, 0x0B4B, REG_FRAME_LENGTH_LINES_);
+		reg_w(gspca_dev, 0x1F40, REG_LINE_LENGTH_PCK_);
+	} else {
+		gspca_err(gspca_dev, "bad width %u\n", w);
+		gspca_dev->usb_err = -EINVAL;
+		return;
+	}
+}
+
+/* Packets that were encrypted, no idea if the grouping is significant */
+static void configure_encrypted(struct gspca_dev *gspca_dev)
+{
+	static const struct cmd reg_init_begin[] = {
+		{0x0100, REG_SOFTWARE_RESET},
+		{0x0000, REG_MODE_SELECT},
+		{0x0100, REG_GROUPED_PARAMETER_HOLD},
+		{0x0004, REG_VT_PIX_CLK_DIV},
+		{0x0001, REG_VT_SYS_CLK_DIV},
+		{0x0008, REG_OP_PIX_CLK_DIV},
+		{0x0001, REG_OP_SYS_CLK_DIV},
+		{0x0004, REG_PRE_PLL_CLK_DIV},
+		{0x0040, REG_PLL_MULTIPLIER},
+		{0x0000, REG_GROUPED_PARAMETER_HOLD},
+		{0x0100, REG_GROUPED_PARAMETER_HOLD},
+	};
+	static const struct cmd reg_init_end[] = {
+		{0x0000, REG_GROUPED_PARAMETER_HOLD},
+		{0x0301, 0x31AE},
+		{0x0805, 0x3064},
+		{0x0071, 0x3170},
+		{0x10DE, REG_RESET_REGISTER},
+		{0x0000, REG_MODE_SELECT},
+		{0x0010, REG_PLL_MULTIPLIER},
+		{0x0100, REG_MODE_SELECT},
+	};
+
+	gspca_dbg(gspca_dev, D_STREAM, "Encrypted begin, w = %u\n\n",
+		  gspca_dev->pixfmt.width);
+	reg_w_buf(gspca_dev, reg_init_begin, ARRAY_SIZE(reg_init_begin));
+	configure_wh(gspca_dev);
+	reg_w_buf(gspca_dev, reg_init_end, ARRAY_SIZE(reg_init_end));
+	reg_w(gspca_dev, 0x0100, REG_GROUPED_PARAMETER_HOLD);
+	reg_w(gspca_dev, 0x0000, REG_GROUPED_PARAMETER_HOLD);
+
+	gspca_dbg(gspca_dev, D_STREAM, "Encrypted end\n\n");
+}
+
+static int configure(struct gspca_dev *gspca_dev)
+{
+	int rc;
+	char *buff = gspca_dev->usb_buf;
+
+	gspca_dbg(gspca_dev, D_STREAM, "configure()\n\n");
+
+	/*
+	 * First driver sets a sort of encryption key
+	 * A number of futur requests of this type have wValue and wIndex
+	 * encrypted as follows:
+	 * -Compute key = this wValue rotate left by 4 bits
+	 *	(decrypt.py rotates right because we are decrypting)
+	 * -Later packets encrypt packets by XOR'ing with key
+	 *	XOR encrypt/decrypt is symmetrical
+	 *	wValue, and wIndex are encrypted
+	 *	bRequest is not and bRequestType is always 0xC0
+	 *		This allows resyncing if key is unknown?
+	 * By setting 0 we XOR with 0 and the shifting and XOR drops out
+	 */
+	rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),
+			     0x16, 0xC0, 0x0000, 0x0000, buff, 2, 500);
+	if (val_reply(gspca_dev, buff, rc)) {
+		gspca_err(gspca_dev, "failed key req\n");
+		return -EIO;
+	}
+
+	/*
+	 * Next does some sort of 2 packet challenge / response
+	 * evidence suggests its an Atmel I2C crypto part but nobody cares to
+	 * look
+	 * (to make sure its not cloned hardware?)
+	 * Ignore: I want to work with their hardware, not clone it
+	 * 16 bytes out challenge, requestType: 0x40
+	 * 16 bytes in response, requestType: 0xC0
+	 */
+
+	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
+			     0x01, 0x40, 0x0001, 0x000F, NULL, 0, 500);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "failed to replay packet 176 w/ rc %d\n",
+			  rc);
+		return rc;
+	}
+
+	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
+			     0x01, 0x40, 0x0000, 0x000F, NULL, 0, 500);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "failed to replay packet 178 w/ rc %d\n",
+			  rc);
+		return rc;
+	}
+
+	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
+			     0x01, 0x40, 0x0001, 0x000F, NULL, 0, 500);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "failed to replay packet 180 w/ rc %d\n",
+			  rc);
+		return rc;
+	}
+
+	/*
+	 * Serial number?  Doesn't seem to be required
+	 * cam1: \xE6\x0D\x00\x00, cam2: \x70\x19\x00\x00
+	 * rc = usb_control_msg(gspca_dev->dev,
+	 *			usb_rcvctrlpipe(gspca_dev->dev, 0),
+	 *			0x20, 0xC0, 0x0000, 0x0000, buff, 4, 500);
+	 */
+
+	/* Large (EEPROM?) read, skip it since no idea what to do with it */
+	gspca_dev->usb_err = 0;
+	configure_encrypted(gspca_dev);
+	if (gspca_dev->usb_err)
+		return gspca_dev->usb_err;
+
+	/* Omitted this by accident, does not work without it */
+	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
+			     0x01, 0x40, 0x0003, 0x000F, NULL, 0, 500);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "failed to replay final packet w/ rc %d\n",
+			  rc);
+		return rc;
+	}
+
+	gspca_dbg(gspca_dev, D_STREAM, "Configure complete\n\n");
+	return 0;
+}
+
+static int sd_config(struct gspca_dev *gspca_dev,
+		     const struct usb_device_id *id)
+{
+	gspca_dev->cam.cam_mode = vga_mode;
+	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
+
+	/* Yes we want URBs and we want them now! */
+	gspca_dev->cam.no_urb_create = 0;
+	gspca_dev->cam.bulk_nurbs = 4;
+	/* Largest size the windows driver uses */
+	gspca_dev->cam.bulk_size = BULK_SIZE;
+	/* Def need to use bulk transfers */
+	gspca_dev->cam.bulk = 1;
+
+	return 0;
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	int rc;
+
+	sd->this_f = 0;
+
+	rc = configure(gspca_dev);
+	if (rc < 0) {
+		gspca_err(gspca_dev, "Failed configure\n");
+		return rc;
+	}
+	/* First two frames have messed up gains
+	Drop them to avoid special cases in user apps? */
+	return 0;
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+			u8 *data,	/* isoc packet */
+			int len)	/* iso packet length */
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	if (len != BULK_SIZE) {
+		/* can we finish a frame? */
+		if (sd->this_f + len == gspca_dev->pixfmt.sizeimage) {
+			gspca_frame_add(gspca_dev, LAST_PACKET, data, len);
+			gspca_dbg(gspca_dev, D_FRAM, "finish frame sz %u/%u w/ len %u\n\n",
+				  sd->this_f, gspca_dev->pixfmt.sizeimage, len);
+		/* lost some data, discard the frame */
+		} else {
+			gspca_frame_add(gspca_dev, DISCARD_PACKET, NULL, 0);
+			gspca_dbg(gspca_dev, D_FRAM, "abort frame sz %u/%u w/ len %u\n\n",
+				  sd->this_f, gspca_dev->pixfmt.sizeimage, len);
+		}
+		sd->this_f = 0;
+	} else {
+		if (sd->this_f == 0)
+			gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
+		else
+			gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+		sd->this_f += len;
+	}
+}
+
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+	return 0;
+}
+
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct gspca_dev *gspca_dev =
+		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	gspca_dev->usb_err = 0;
+
+	if (!gspca_dev->streaming)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_EXPOSURE:
+		setexposure(gspca_dev, ctrl->val);
+		break;
+	case V4L2_CID_GAIN:
+		/* gspca_dev->gain automatically updated */
+		setggain(gspca_dev, gspca_dev->gain->val);
+		break;
+	case V4L2_CID_BLUE_BALANCE:
+		sd->blue->val = ctrl->val;
+		setbgain(gspca_dev, sd->blue->val, gspca_dev->gain->val);
+		break;
+	case V4L2_CID_RED_BALANCE:
+		sd->red->val = ctrl->val;
+		setrgain(gspca_dev, sd->red->val, gspca_dev->gain->val);
+		break;
+	}
+	return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+	.s_ctrl = sd_s_ctrl,
+};
+
+static int sd_init_controls(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+
+	gspca_dev->vdev.ctrl_handler = hdl;
+	v4l2_ctrl_handler_init(hdl, 4);
+
+	gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+	/* Mostly limited by URB timeouts */
+	/* XXX: make dynamic based on frame rate? */
+		V4L2_CID_EXPOSURE, 0, 800, 1, 350);
+	gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_GAIN, 0, 511, 1, 128);
+	sd->blue = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_BLUE_BALANCE, 0, 1023, 1, 80);
+	sd->red = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+			V4L2_CID_RED_BALANCE, 0, 1023, 1, 295);
+
+	if (hdl->error) {
+		gspca_err(gspca_dev, "Could not initialize controls\n");
+		return hdl->error;
+	}
+	return 0;
+}
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+	.name = MODULE_NAME,
+	.config = sd_config,
+	.init = sd_init,
+	.init_controls = sd_init_controls,
+	.start = sd_start,
+	.pkt_scan = sd_pkt_scan,
+};
+
+/* Table of supported USB devices */
+static const struct usb_device_id device_table[] = {
+	/* Commented out devices should be related */
+	/* AS: AmScope, TT: ToupTek */
+	/* { USB_DEVICE(0x0547, 0x6035) },  TT UCMOS00350KPA */
+	/* { USB_DEVICE(0x0547, 0x6130) },  TT UCMOS01300KPA */
+	/* { USB_DEVICE(0x0547, 0x6200) },  TT UCMOS02000KPA */
+	/* { USB_DEVICE(0x0547, 0x6310) },  TT UCMOS03100KPA */
+	/* { USB_DEVICE(0x0547, 0x6510) },  TT UCMOS05100KPA */
+	/* { USB_DEVICE(0x0547, 0x6800) },  TT UCMOS08000KPA */
+	/* { USB_DEVICE(0x0547, 0x6801) },  TT UCMOS08000KPB */
+	{ USB_DEVICE(0x0547, 0x6801) }, /* TT UCMOS08000KPB, AS MU800 */
+	/* { USB_DEVICE(0x0547, 0x6900) },  TT UCMOS09000KPA */
+	/* { USB_DEVICE(0x0547, 0x6901) },  TT UCMOS09000KPB */
+	/* { USB_DEVICE(0x0547, 0x6010) },  TT UCMOS10000KPA */
+	/* { USB_DEVICE(0x0547, 0x6014) },  TT UCMOS14000KPA */
+	/* { USB_DEVICE(0x0547, 0x6131) },  TT UCMOS01300KMA */
+	/* { USB_DEVICE(0x0547, 0x6511) },  TT UCMOS05100KMA */
+	/* { USB_DEVICE(0x0547, 0x8080) },  TT UHCCD00800KPA */
+	/* { USB_DEVICE(0x0547, 0x8140) },  TT UHCCD01400KPA */
+	/* { USB_DEVICE(0x0547, 0x8141) },  TT EXCCD01400KPA */
+	/* { USB_DEVICE(0x0547, 0x8200) },  TT UHCCD02000KPA */
+	/* { USB_DEVICE(0x0547, 0x8201) },  TT UHCCD02000KPB */
+	/* { USB_DEVICE(0x0547, 0x8310) },  TT UHCCD03100KPA */
+	/* { USB_DEVICE(0x0547, 0x8500) },  TT UHCCD05000KPA */
+	/* { USB_DEVICE(0x0547, 0x8510) },  TT UHCCD05100KPA */
+	/* { USB_DEVICE(0x0547, 0x8600) },  TT UHCCD06000KPA */
+	/* { USB_DEVICE(0x0547, 0x8800) },  TT UHCCD08000KPA */
+	/* { USB_DEVICE(0x0547, 0x8315) },  TT UHCCD03150KPA */
+	/* { USB_DEVICE(0x0547, 0x7800) },  TT UHCCD00800KMA */
+	/* { USB_DEVICE(0x0547, 0x7140) },  TT UHCCD01400KMA */
+	/* { USB_DEVICE(0x0547, 0x7141) },  TT UHCCD01400KMB */
+	/* { USB_DEVICE(0x0547, 0x7200) },  TT UHCCD02000KMA */
+	/* { USB_DEVICE(0x0547, 0x7315) },  TT UHCCD03150KMA */
+	{ }
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+static int sd_probe(struct usb_interface *intf,
+		    const struct usb_device_id *id)
+{
+	return gspca_dev_probe(intf, id, &sd_desc, 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,
+#endif
+};
+
+static int __init sd_mod_init(void)
+{
+	int ret;
+
+	ret = usb_register(&sd_driver);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+	usb_deregister(&sd_driver);
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);