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kernel_samsung_a53x/sound/usb/caiaq/input.c
Takashi Iwai 199db9fa4a ALSA: caiaq: Use snd_card_free_when_closed() at disconnection 
[ Upstream commit b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c ]

The USB disconnect callback is supposed to be short and not too-long
waiting.  OTOH, the current code uses snd_card_free() at
disconnection, but this waits for the close of all used fds, hence it
can take long.  It eventually blocks the upper layer USB ioctls, which
may trigger a soft lockup.

An easy workaround is to replace snd_card_free() with
snd_card_free_when_closed().  This variant returns immediately while
the release of resources is done asynchronously by the card device
release at the last close.

This patch also splits the code to the disconnect and the free phases;
the former is called immediately at the USB disconnect callback while
the latter is called from the card destructor.

Fixes: 523f1dce3743 ("[ALSA] Add Native Instrument usb audio device support")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20241113111042.15058-5-tiwai@suse.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-17 13:24:07 +01:00

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// 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 */
ret = -EINVAL;
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_disconnect(struct snd_usb_caiaqdev *cdev)
{
if (!cdev || !cdev->input_dev)
return;
usb_kill_urb(cdev->ep4_in_urb);
input_unregister_device(cdev->input_dev);
}
void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *cdev)
{
if (!cdev || !cdev->input_dev)
return;
usb_free_urb(cdev->ep4_in_urb);
cdev->ep4_in_urb = NULL;
cdev->input_dev = NULL;
}
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