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, 842 insertions, 0 deletions

diff --git a/sound/usb/caiaq/input.c b/sound/usb/caiaq/input.c
new file mode 100644
index 000000000..1e2cf2f08
--- /dev/null
+++ b/sound/usb/caiaq/input.c
@@ -0,0 +1,842 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (c) 2006,2007 Daniel Mack, Tim Ruetz
+*/
+
+#include <linux/device.h>
+#include <linux/gfp.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "device.h"
+#include "input.h"
+
+static const unsigned short keycode_ak1[] =  { KEY_C, KEY_B, KEY_A };
+static const unsigned short keycode_rk2[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
+					 KEY_5, KEY_6, KEY_7 };
+static const unsigned short keycode_rk3[] =  { KEY_1, KEY_2, KEY_3, KEY_4,
+					 KEY_5, KEY_6, KEY_7, KEY_8, KEY_9 };
+
+static const unsigned short keycode_kore[] = {
+	KEY_FN_F1,      /* "menu"               */
+	KEY_FN_F7,      /* "lcd backlight       */
+	KEY_FN_F2,      /* "control"            */
+	KEY_FN_F3,      /* "enter"              */
+	KEY_FN_F4,      /* "view"               */
+	KEY_FN_F5,      /* "esc"                */
+	KEY_FN_F6,      /* "sound"              */
+	KEY_FN_F8,      /* array spacer, never triggered. */
+	KEY_RIGHT,
+	KEY_DOWN,
+	KEY_UP,
+	KEY_LEFT,
+	KEY_SOUND,      /* "listen"             */
+	KEY_RECORD,
+	KEY_PLAYPAUSE,
+	KEY_STOP,
+	BTN_4,          /* 8 softkeys */
+	BTN_3,
+	BTN_2,
+	BTN_1,
+	BTN_8,
+	BTN_7,
+	BTN_6,
+	BTN_5,
+	KEY_BRL_DOT4,   /* touch sensitive knobs */
+	KEY_BRL_DOT3,
+	KEY_BRL_DOT2,
+	KEY_BRL_DOT1,
+	KEY_BRL_DOT8,
+	KEY_BRL_DOT7,
+	KEY_BRL_DOT6,
+	KEY_BRL_DOT5
+};
+
+#define MASCHINE_BUTTONS   (42)
+#define MASCHINE_BUTTON(X) ((X) + BTN_MISC)
+#define MASCHINE_PADS      (16)
+#define MASCHINE_PAD(X)    ((X) + ABS_PRESSURE)
+
+static const unsigned short keycode_maschine[] = {
+	MASCHINE_BUTTON(40), /* mute       */
+	MASCHINE_BUTTON(39), /* solo       */
+	MASCHINE_BUTTON(38), /* select     */
+	MASCHINE_BUTTON(37), /* duplicate  */
+	MASCHINE_BUTTON(36), /* navigate   */
+	MASCHINE_BUTTON(35), /* pad mode   */
+	MASCHINE_BUTTON(34), /* pattern    */
+	MASCHINE_BUTTON(33), /* scene      */
+	KEY_RESERVED, /* spacer */
+
+	MASCHINE_BUTTON(30), /* rec        */
+	MASCHINE_BUTTON(31), /* erase      */
+	MASCHINE_BUTTON(32), /* shift      */
+	MASCHINE_BUTTON(28), /* grid       */
+	MASCHINE_BUTTON(27), /* >          */
+	MASCHINE_BUTTON(26), /* <          */
+	MASCHINE_BUTTON(25), /* restart    */
+
+	MASCHINE_BUTTON(21), /* E          */
+	MASCHINE_BUTTON(22), /* F          */
+	MASCHINE_BUTTON(23), /* G          */
+	MASCHINE_BUTTON(24), /* H          */
+	MASCHINE_BUTTON(20), /* D          */
+	MASCHINE_BUTTON(19), /* C          */
+	MASCHINE_BUTTON(18), /* B          */
+	MASCHINE_BUTTON(17), /* A          */
+
+	MASCHINE_BUTTON(0),  /* control    */
+	MASCHINE_BUTTON(2),  /* browse     */
+	MASCHINE_BUTTON(4),  /* <          */
+	MASCHINE_BUTTON(6),  /* snap       */
+	MASCHINE_BUTTON(7),  /* autowrite  */
+	MASCHINE_BUTTON(5),  /* >          */
+	MASCHINE_BUTTON(3),  /* sampling   */
+	MASCHINE_BUTTON(1),  /* step       */
+
+	MASCHINE_BUTTON(15), /* 8 softkeys */
+	MASCHINE_BUTTON(14),
+	MASCHINE_BUTTON(13),
+	MASCHINE_BUTTON(12),
+	MASCHINE_BUTTON(11),
+	MASCHINE_BUTTON(10),
+	MASCHINE_BUTTON(9),
+	MASCHINE_BUTTON(8),
+
+	MASCHINE_BUTTON(16), /* note repeat */
+	MASCHINE_BUTTON(29)  /* play        */
+};
+
+#define KONTROLX1_INPUTS	(40)
+#define KONTROLS4_BUTTONS	(12 * 8)
+#define KONTROLS4_AXIS		(46)
+
+#define KONTROLS4_BUTTON(X)	((X) + BTN_MISC)
+#define KONTROLS4_ABS(X)	((X) + ABS_HAT0X)
+
+#define DEG90		(range / 2)
+#define DEG180		(range)
+#define DEG270		(DEG90 + DEG180)
+#define DEG360		(DEG180 * 2)
+#define HIGH_PEAK	(268)
+#define LOW_PEAK	(-7)
+
+/* some of these devices have endless rotation potentiometers
+ * built in which use two tapers, 90 degrees phase shifted.
+ * this algorithm decodes them to one single value, ranging
+ * from 0 to 999 */
+static unsigned int decode_erp(unsigned char a, unsigned char b)
+{
+	int weight_a, weight_b;
+	int pos_a, pos_b;
+	int ret;
+	int range = HIGH_PEAK - LOW_PEAK;
+	int mid_value = (HIGH_PEAK + LOW_PEAK) / 2;
+
+	weight_b = abs(mid_value - a) - (range / 2 - 100) / 2;
+
+	if (weight_b < 0)
+		weight_b = 0;
+
+	if (weight_b > 100)
+		weight_b = 100;
+
+	weight_a = 100 - weight_b;
+
+	if (a < mid_value) {
+		/* 0..90 and 270..360 degrees */
+		pos_b = b - LOW_PEAK + DEG270;
+		if (pos_b >= DEG360)
+			pos_b -= DEG360;
+	} else
+		/* 90..270 degrees */
+		pos_b = HIGH_PEAK - b + DEG90;
+
+
+	if (b > mid_value)
+		/* 0..180 degrees */
+		pos_a = a - LOW_PEAK;
+	else
+		/* 180..360 degrees */
+		pos_a = HIGH_PEAK - a + DEG180;
+
+	/* interpolate both slider values, depending on weight factors */
+	/* 0..99 x DEG360 */
+	ret = pos_a * weight_a + pos_b * weight_b;
+
+	/* normalize to 0..999 */
+	ret *= 10;
+	ret /= DEG360;
+
+	if (ret < 0)
+		ret += 1000;
+
+	if (ret >= 1000)
+		ret -= 1000;
+
+	return ret;
+}
+
+#undef DEG90
+#undef DEG180
+#undef DEG270
+#undef DEG360
+#undef HIGH_PEAK
+#undef LOW_PEAK
+
+static inline void snd_caiaq_input_report_abs(struct snd_usb_caiaqdev *cdev,
+					      int axis, const unsigned char *buf,
+					      int offset)
+{
+	input_report_abs(cdev->input_dev, axis,
+			 (buf[offset * 2] << 8) | buf[offset * 2 + 1]);
+}
+
+static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *cdev,
+					const unsigned char *buf,
+					unsigned int len)
+{
+	struct input_dev *input_dev = cdev->input_dev;
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
+		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 2);
+		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 1);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
+		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 1);
+		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 2);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+		snd_caiaq_input_report_abs(cdev, ABS_HAT0X, buf, 4);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT0Y, buf, 2);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT1X, buf, 6);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT1Y, buf, 1);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT2X, buf, 7);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT2Y, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT3X, buf, 5);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT3Y, buf, 3);
+		break;
+	}
+
+	input_sync(input_dev);
+}
+
+static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *cdev,
+				     const char *buf, unsigned int len)
+{
+	struct input_dev *input_dev = cdev->input_dev;
+	int i;
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
+		i = decode_erp(buf[0], buf[1]);
+		input_report_abs(input_dev, ABS_X, i);
+		input_sync(input_dev);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
+		i = decode_erp(buf[7], buf[5]);
+		input_report_abs(input_dev, ABS_HAT0X, i);
+		i = decode_erp(buf[12], buf[14]);
+		input_report_abs(input_dev, ABS_HAT0Y, i);
+		i = decode_erp(buf[15], buf[13]);
+		input_report_abs(input_dev, ABS_HAT1X, i);
+		i = decode_erp(buf[0], buf[2]);
+		input_report_abs(input_dev, ABS_HAT1Y, i);
+		i = decode_erp(buf[3], buf[1]);
+		input_report_abs(input_dev, ABS_HAT2X, i);
+		i = decode_erp(buf[8], buf[10]);
+		input_report_abs(input_dev, ABS_HAT2Y, i);
+		i = decode_erp(buf[11], buf[9]);
+		input_report_abs(input_dev, ABS_HAT3X, i);
+		i = decode_erp(buf[4], buf[6]);
+		input_report_abs(input_dev, ABS_HAT3Y, i);
+		input_sync(input_dev);
+		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		/* 4 under the left screen */
+		input_report_abs(input_dev, ABS_HAT0X, decode_erp(buf[21], buf[20]));
+		input_report_abs(input_dev, ABS_HAT0Y, decode_erp(buf[15], buf[14]));
+		input_report_abs(input_dev, ABS_HAT1X, decode_erp(buf[9],  buf[8]));
+		input_report_abs(input_dev, ABS_HAT1Y, decode_erp(buf[3],  buf[2]));
+
+		/* 4 under the right screen */
+		input_report_abs(input_dev, ABS_HAT2X, decode_erp(buf[19], buf[18]));
+		input_report_abs(input_dev, ABS_HAT2Y, decode_erp(buf[13], buf[12]));
+		input_report_abs(input_dev, ABS_HAT3X, decode_erp(buf[7],  buf[6]));
+		input_report_abs(input_dev, ABS_HAT3Y, decode_erp(buf[1],  buf[0]));
+
+		/* volume */
+		input_report_abs(input_dev, ABS_RX, decode_erp(buf[17], buf[16]));
+		/* tempo */
+		input_report_abs(input_dev, ABS_RY, decode_erp(buf[11], buf[10]));
+		/* swing */
+		input_report_abs(input_dev, ABS_RZ, decode_erp(buf[5],  buf[4]));
+
+		input_sync(input_dev);
+		break;
+	}
+}
+
+static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *cdev,
+				    unsigned char *buf, unsigned int len)
+{
+	struct input_dev *input_dev = cdev->input_dev;
+	unsigned short *keycode = input_dev->keycode;
+	int i;
+
+	if (!keycode)
+		return;
+
+	if (input_dev->id.product == USB_PID_RIGKONTROL2)
+		for (i = 0; i < len; i++)
+			buf[i] = ~buf[i];
+
+	for (i = 0; i < input_dev->keycodemax && i < len * 8; i++)
+		input_report_key(input_dev, keycode[i],
+				 buf[i / 8] & (1 << (i % 8)));
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
+		input_report_abs(cdev->input_dev, ABS_MISC, 255 - buf[4]);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+		/* rotary encoders */
+		input_report_abs(cdev->input_dev, ABS_X, buf[5] & 0xf);
+		input_report_abs(cdev->input_dev, ABS_Y, buf[5] >> 4);
+		input_report_abs(cdev->input_dev, ABS_Z, buf[6] & 0xf);
+		input_report_abs(cdev->input_dev, ABS_MISC, buf[6] >> 4);
+		break;
+	}
+
+	input_sync(input_dev);
+}
+
+#define TKS4_MSGBLOCK_SIZE	16
+
+static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *cdev,
+					const unsigned char *buf,
+					unsigned int len)
+{
+	struct device *dev = caiaqdev_to_dev(cdev);
+
+	while (len) {
+		unsigned int i, block_id = (buf[0] << 8) | buf[1];
+
+		switch (block_id) {
+		case 0:
+			/* buttons */
+			for (i = 0; i < KONTROLS4_BUTTONS; i++)
+				input_report_key(cdev->input_dev, KONTROLS4_BUTTON(i),
+						 (buf[4 + (i / 8)] >> (i % 8)) & 1);
+			break;
+
+		case 1:
+			/* left wheel */
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(36), buf[9] | ((buf[8] & 0x3) << 8));
+			/* right wheel */
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(37), buf[13] | ((buf[12] & 0x3) << 8));
+
+			/* rotary encoders */
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(38), buf[3] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(39), buf[4] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(40), buf[4] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(41), buf[5] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(42), buf[5] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(43), buf[6] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(44), buf[6] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(45), buf[7] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(46), buf[7] & 0xf);
+
+			break;
+		case 2:
+			/* Volume Fader Channel D */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(0), buf, 1);
+			/* Volume Fader Channel B */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(1), buf, 2);
+			/* Volume Fader Channel A */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(2), buf, 3);
+			/* Volume Fader Channel C */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(3), buf, 4);
+			/* Loop Volume */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(4), buf, 6);
+			/* Crossfader */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(7), buf, 7);
+
+			break;
+
+		case 3:
+			/* Tempo Fader R */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(6), buf, 3);
+			/* Tempo Fader L */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(5), buf, 4);
+			/* Mic Volume */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(8), buf, 6);
+			/* Cue Mix */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(9), buf, 7);
+
+			break;
+
+		case 4:
+			/* Wheel distance sensor L */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(10), buf, 1);
+			/* Wheel distance sensor R */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(11), buf, 2);
+			/* Channel D EQ - Filter */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(12), buf, 3);
+			/* Channel D EQ - Low */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(13), buf, 4);
+			/* Channel D EQ - Mid */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(14), buf, 5);
+			/* Channel D EQ - Hi */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(15), buf, 6);
+			/* FX2 - dry/wet */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(16), buf, 7);
+
+			break;
+
+		case 5:
+			/* FX2 - 1 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(17), buf, 1);
+			/* FX2 - 2 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(18), buf, 2);
+			/* FX2 - 3 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(19), buf, 3);
+			/* Channel B EQ - Filter */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(20), buf, 4);
+			/* Channel B EQ - Low */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(21), buf, 5);
+			/* Channel B EQ - Mid */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(22), buf, 6);
+			/* Channel B EQ - Hi */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(23), buf, 7);
+
+			break;
+
+		case 6:
+			/* Channel A EQ - Filter */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(24), buf, 1);
+			/* Channel A EQ - Low */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(25), buf, 2);
+			/* Channel A EQ - Mid */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(26), buf, 3);
+			/* Channel A EQ - Hi */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(27), buf, 4);
+			/* Channel C EQ - Filter */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(28), buf, 5);
+			/* Channel C EQ - Low */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(29), buf, 6);
+			/* Channel C EQ - Mid */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(30), buf, 7);
+
+			break;
+
+		case 7:
+			/* Channel C EQ - Hi */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(31), buf, 1);
+			/* FX1 - wet/dry */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(32), buf, 2);
+			/* FX1 - 1 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(33), buf, 3);
+			/* FX1 - 2 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(34), buf, 4);
+			/* FX1 - 3 */
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(35), buf, 5);
+
+			break;
+
+		default:
+			dev_dbg(dev, "%s(): bogus block (id %d)\n",
+				__func__, block_id);
+			return;
+		}
+
+		len -= TKS4_MSGBLOCK_SIZE;
+		buf += TKS4_MSGBLOCK_SIZE;
+	}
+
+	input_sync(cdev->input_dev);
+}
+
+#define MASCHINE_MSGBLOCK_SIZE 2
+
+static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *cdev,
+					const unsigned char *buf,
+					unsigned int len)
+{
+	unsigned int i, pad_id;
+	__le16 *pressure = (__le16 *) buf;
+
+	for (i = 0; i < MASCHINE_PADS; i++) {
+		pad_id = le16_to_cpu(*pressure) >> 12;
+		input_report_abs(cdev->input_dev, MASCHINE_PAD(pad_id),
+				 le16_to_cpu(*pressure) & 0xfff);
+		pressure++;
+	}
+
+	input_sync(cdev->input_dev);
+}
+
+static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
+{
+	struct snd_usb_caiaqdev *cdev = urb->context;
+	unsigned char *buf = urb->transfer_buffer;
+	struct device *dev = &urb->dev->dev;
+	int ret;
+
+	if (urb->status || !cdev || urb != cdev->ep4_in_urb)
+		return;
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+		if (urb->actual_length < 24)
+			goto requeue;
+
+		if (buf[0] & 0x3)
+			snd_caiaq_input_read_io(cdev, buf + 1, 7);
+
+		if (buf[0] & 0x4)
+			snd_caiaq_input_read_analog(cdev, buf + 8, 16);
+
+		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+		snd_usb_caiaq_tks4_dispatch(cdev, buf, urb->actual_length);
+		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		if (urb->actual_length < (MASCHINE_PADS * MASCHINE_MSGBLOCK_SIZE))
+			goto requeue;
+
+		snd_usb_caiaq_maschine_dispatch(cdev, buf, urb->actual_length);
+		break;
+	}
+
+requeue:
+	cdev->ep4_in_urb->actual_length = 0;
+	ret = usb_submit_urb(cdev->ep4_in_urb, GFP_ATOMIC);
+	if (ret < 0)
+		dev_err(dev, "unable to submit urb. OOM!?\n");
+}
+
+static int snd_usb_caiaq_input_open(struct input_dev *idev)
+{
+	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
+
+	if (!cdev)
+		return -EINVAL;
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		if (usb_submit_urb(cdev->ep4_in_urb, GFP_KERNEL) != 0)
+			return -EIO;
+		break;
+	}
+
+	return 0;
+}
+
+static void snd_usb_caiaq_input_close(struct input_dev *idev)
+{
+	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
+
+	if (!cdev)
+		return;
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		usb_kill_urb(cdev->ep4_in_urb);
+		break;
+	}
+}
+
+void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *cdev,
+				  char *buf,
+				  unsigned int len)
+{
+	if (!cdev->input_dev || len < 1)
+		return;
+
+	switch (buf[0]) {
+	case EP1_CMD_READ_ANALOG:
+		snd_caiaq_input_read_analog(cdev, buf + 1, len - 1);
+		break;
+	case EP1_CMD_READ_ERP:
+		snd_caiaq_input_read_erp(cdev, buf + 1, len - 1);
+		break;
+	case EP1_CMD_READ_IO:
+		snd_caiaq_input_read_io(cdev, buf + 1, len - 1);
+		break;
+	}
+}
+
+int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *cdev)
+{
+	struct usb_device *usb_dev = cdev->chip.dev;
+	struct input_dev *input;
+	int i, ret = 0;
+
+	input = input_allocate_device();
+	if (!input)
+		return -ENOMEM;
+
+	usb_make_path(usb_dev, cdev->phys, sizeof(cdev->phys));
+	strlcat(cdev->phys, "/input0", sizeof(cdev->phys));
+
+	input->name = cdev->product_name;
+	input->phys = cdev->phys;
+	usb_to_input_id(usb_dev, &input->id);
+	input->dev.parent = &usb_dev->dev;
+
+	input_set_drvdata(input, cdev);
+
+	switch (cdev->chip.usb_id) {
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
+			BIT_MASK(ABS_Z);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk2));
+		memcpy(cdev->keycode, keycode_rk2, sizeof(keycode_rk2));
+		input->keycodemax = ARRAY_SIZE(keycode_rk2);
+		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
+			BIT_MASK(ABS_Z);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk3));
+		memcpy(cdev->keycode, keycode_rk3, sizeof(keycode_rk3));
+		input->keycodemax = ARRAY_SIZE(keycode_rk3);
+		input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
+		input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
+		input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_X);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_ak1));
+		memcpy(cdev->keycode, keycode_ak1, sizeof(keycode_ak1));
+		input->keycodemax = ARRAY_SIZE(keycode_ak1);
+		input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 5);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
+				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
+				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
+				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
+				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
+				   BIT_MASK(ABS_Z);
+		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_kore));
+		memcpy(cdev->keycode, keycode_kore, sizeof(keycode_kore));
+		input->keycodemax = ARRAY_SIZE(keycode_kore);
+		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
+		break;
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
+				   BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
+				   BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
+				   BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
+				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
+				   BIT_MASK(ABS_Z);
+		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLX1_INPUTS);
+		for (i = 0; i < KONTROLX1_INPUTS; i++)
+			cdev->keycode[i] = BTN_MISC + i;
+		input->keycodemax = KONTROLX1_INPUTS;
+
+		/* analog potentiometers */
+		input_set_abs_params(input, ABS_HAT0X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT0Y, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT1X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT1Y, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT2X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT2Y, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT3X, 0, 4096, 0, 10);
+		input_set_abs_params(input, ABS_HAT3Y, 0, 4096, 0, 10);
+
+		/* rotary encoders */
+		input_set_abs_params(input, ABS_X, 0, 0xf, 0, 1);
+		input_set_abs_params(input, ABS_Y, 0, 0xf, 0, 1);
+		input_set_abs_params(input, ABS_Z, 0, 0xf, 0, 1);
+		input_set_abs_params(input, ABS_MISC, 0, 0xf, 0, 1);
+
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
+			ret = -ENOMEM;
+			goto exit_free_idev;
+		}
+
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
+				  usb_rcvbulkpipe(usb_dev, 0x4),
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
+		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
+		if (ret < 0)
+			goto exit_free_idev;
+
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
+
+		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLS4_BUTTONS);
+		for (i = 0; i < KONTROLS4_BUTTONS; i++)
+			cdev->keycode[i] = KONTROLS4_BUTTON(i);
+		input->keycodemax = KONTROLS4_BUTTONS;
+
+		for (i = 0; i < KONTROLS4_AXIS; i++) {
+			int axis = KONTROLS4_ABS(i);
+			input->absbit[BIT_WORD(axis)] |= BIT_MASK(axis);
+		}
+
+		/* 36 analog potentiometers and faders */
+		for (i = 0; i < 36; i++)
+			input_set_abs_params(input, KONTROLS4_ABS(i), 0, 0xfff, 0, 10);
+
+		/* 2 encoder wheels */
+		input_set_abs_params(input, KONTROLS4_ABS(36), 0, 0x3ff, 0, 1);
+		input_set_abs_params(input, KONTROLS4_ABS(37), 0, 0x3ff, 0, 1);
+
+		/* 9 rotary encoders */
+		for (i = 0; i < 9; i++)
+			input_set_abs_params(input, KONTROLS4_ABS(38+i), 0, 0xf, 0, 1);
+
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
+			ret = -ENOMEM;
+			goto exit_free_idev;
+		}
+
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
+				  usb_rcvbulkpipe(usb_dev, 0x4),
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
+		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
+		if (ret < 0)
+			goto exit_free_idev;
+
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
+
+		break;
+
+	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
+		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+		input->absbit[0] = BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
+			BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y) |
+			BIT_MASK(ABS_HAT2X) | BIT_MASK(ABS_HAT2Y) |
+			BIT_MASK(ABS_HAT3X) | BIT_MASK(ABS_HAT3Y) |
+			BIT_MASK(ABS_RX) | BIT_MASK(ABS_RY) |
+			BIT_MASK(ABS_RZ);
+
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_maschine));
+		memcpy(cdev->keycode, keycode_maschine, sizeof(keycode_maschine));
+		input->keycodemax = ARRAY_SIZE(keycode_maschine);
+
+		for (i = 0; i < MASCHINE_PADS; i++) {
+			input->absbit[0] |= MASCHINE_PAD(i);
+			input_set_abs_params(input, MASCHINE_PAD(i), 0, 0xfff, 5, 10);
+		}
+
+		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT1X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT1Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT2X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT2Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT3X, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_HAT3Y, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_RX, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_RY, 0, 999, 0, 10);
+		input_set_abs_params(input, ABS_RZ, 0, 999, 0, 10);
+
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
+			ret = -ENOMEM;
+			goto exit_free_idev;
+		}
+
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
+				  usb_rcvbulkpipe(usb_dev, 0x4),
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
+		ret = usb_urb_ep_type_check(cdev->ep4_in_urb);
+		if (ret < 0)
+			goto exit_free_idev;
+
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
+		break;
+
+	default:
+		/* no input methods supported on this device */
+		goto exit_free_idev;
+	}
+
+	input->open = snd_usb_caiaq_input_open;
+	input->close = snd_usb_caiaq_input_close;
+	input->keycode = cdev->keycode;
+	input->keycodesize = sizeof(unsigned short);
+	for (i = 0; i < input->keycodemax; i++)
+		__set_bit(cdev->keycode[i], input->keybit);
+
+	cdev->input_dev = input;
+
+	ret = input_register_device(input);
+	if (ret < 0)
+		goto exit_free_idev;
+
+	return 0;
+
+exit_free_idev:
+	input_free_device(input);
+	cdev->input_dev = NULL;
+	return ret;
+}
+
+void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *cdev)
+{
+	if (!cdev || !cdev->input_dev)
+		return;
+
+	usb_kill_urb(cdev->ep4_in_urb);
+	usb_free_urb(cdev->ep4_in_urb);
+	cdev->ep4_in_urb = NULL;
+
+	input_unregister_device(cdev->input_dev);
+	cdev->input_dev = NULL;
+}