This module supports multiple devices, autoprobe and hotplugging.
+ Module snd-usb-caiaq
+ --------------------
+
+ Module for caiaq UB audio interfaces,
+ * Native Instruments RigKontrol2
+ * Native Instruments Kore Controller
+ * Native Instruments Audio Kontrol 1
+ * Native Instruments Audio 8 DJ
+
+ This module supports multiple devices, autoprobe and hotplugging.
+
Module snd-usb-usx2y
--------------------
To compile this driver as a module, choose M here: the module
will be called snd-usb-usx2y.
+config SND_USB_CAIAQ
+ tristate "Native Instruments USB audio devices"
+ depends on SND && USB
+ select SND_HWDEP
+ select SND_RAWMIDI
+ select SND_PCM
+ help
+ Say Y here to include support for caiaq USB audio interfaces,
+ namely:
+
+ * Native Instruments RigKontrol2
+ * Native Instruments Kore Controller
+ * Native Instruments Audio Kontrol 1
+ * Native Instruments Audio 8 DJ
+
+ To compile this driver as a module, choose M here: the module
+ will be called snd-usb-caiaq.
+
+config SND_USB_CAIAQ_INPUT
+ bool "enable input device for controllers"
+ depends on SND_USB_CAIAQ
+ help
+ Say Y here to support input controllers like buttons, knobs,
+ alpha dials and analog pedals on the following products:
+
+ * Native Instruments RigKontrol2
+ * Native Instruments Audio Kontrol 1
+
endmenu
obj-$(CONFIG_SND_USB_AUDIO) += snd-usb-audio.o snd-usb-lib.o
obj-$(CONFIG_SND_USB_USX2Y) += snd-usb-lib.o
-obj-$(CONFIG_SND) += usx2y/
+obj-$(CONFIG_SND) += usx2y/ caiaq/
--- /dev/null
+snd-usb-caiaq-objs := caiaq-device.o caiaq-audio.o caiaq-midi.o caiaq-input.o
+
+obj-$(CONFIG_SND_USB_CAIAQ) += snd-usb-caiaq.o
--- /dev/null
+/*
+ * Copyright (c) 2006,2007 Daniel Mack, Karsten Wiese
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/spinlock.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/rawmidi.h>
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+#include <linux/input.h>
+#endif
+
+#include "caiaq-device.h"
+#include "caiaq-audio.h"
+
+#define N_URBS 32
+#define CLOCK_DRIFT_TOLERANCE 5
+#define FRAMES_PER_URB 8
+#define BYTES_PER_FRAME 512
+#define CHANNELS_PER_STREAM 2
+#define BYTES_PER_SAMPLE 3
+#define BYTES_PER_SAMPLE_USB 4
+#define MAX_BUFFER_SIZE (128*1024)
+
+#define ENDPOINT_CAPTURE 2
+#define ENDPOINT_PLAYBACK 6
+
+#define MAKE_CHECKBYTE(dev,stream,i) \
+ (stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
+
+static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER),
+ .formats = SNDRV_PCM_FMTBIT_S24_3BE,
+ .rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000),
+ .rate_min = 44100,
+ .rate_max = 0, /* will overwrite later */
+ .channels_min = CHANNELS_PER_STREAM,
+ .channels_max = CHANNELS_PER_STREAM,
+ .buffer_bytes_max = MAX_BUFFER_SIZE,
+ .period_bytes_min = 4096,
+ .period_bytes_max = MAX_BUFFER_SIZE,
+ .periods_min = 1,
+ .periods_max = 1024,
+};
+
+static void
+activate_substream(struct snd_usb_caiaqdev *dev,
+ struct snd_pcm_substream *sub)
+{
+ if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dev->sub_playback[sub->number] = sub;
+ else
+ dev->sub_capture[sub->number] = sub;
+}
+
+static void
+deactivate_substream(struct snd_usb_caiaqdev *dev,
+ struct snd_pcm_substream *sub)
+{
+ if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dev->sub_playback[sub->number] = NULL;
+ else
+ dev->sub_capture[sub->number] = NULL;
+}
+
+static int
+all_substreams_zero(struct snd_pcm_substream **subs)
+{
+ int i;
+ for (i = 0; i < MAX_STREAMS; i++)
+ if (subs[i] != NULL)
+ return 0;
+ return 1;
+}
+
+static int stream_start(struct snd_usb_caiaqdev *dev)
+{
+ int i, ret;
+
+ debug("stream_start(%p)\n", dev);
+ spin_lock_irq(&dev->spinlock);
+ if (dev->streaming) {
+ spin_unlock_irq(&dev->spinlock);
+ return -EINVAL;
+ }
+
+ dev->input_panic = 0;
+ dev->output_panic = 0;
+ dev->first_packet = 1;
+ dev->streaming = 1;
+
+ for (i = 0; i < N_URBS; i++) {
+ ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC);
+ if (ret) {
+ log("unable to trigger initial read #%d! (ret = %d)\n",
+ i, ret);
+ dev->streaming = 0;
+ spin_unlock_irq(&dev->spinlock);
+ return -EPIPE;
+ }
+ }
+
+ spin_unlock_irq(&dev->spinlock);
+ return 0;
+}
+
+static void stream_stop(struct snd_usb_caiaqdev *dev)
+{
+ int i;
+
+ debug("stream_stop(%p)\n", dev);
+ if (!dev->streaming)
+ return;
+
+ dev->streaming = 0;
+ for (i = 0; i < N_URBS; i++) {
+ usb_unlink_urb(dev->data_urbs_in[i]);
+ usb_unlink_urb(dev->data_urbs_out[i]);
+ }
+}
+
+static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
+{
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+ debug("snd_usb_caiaq_substream_open(%p)\n", substream);
+ substream->runtime->hw = dev->pcm_info;
+ snd_pcm_limit_hw_rates(substream->runtime);
+ return 0;
+}
+
+static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
+{
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+
+ debug("snd_usb_caiaq_substream_close(%p)\n", substream);
+ if (all_substreams_zero(dev->sub_playback) &&
+ all_substreams_zero(dev->sub_capture)) {
+ /* when the last client has stopped streaming,
+ * all sample rates are allowed again */
+ stream_stop(dev);
+ dev->pcm_info.rates = dev->samplerates;
+ }
+
+ return 0;
+}
+
+static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
+ struct snd_pcm_hw_params *hw_params)
+{
+ debug("snd_usb_caiaq_pcm_hw_params(%p)\n", sub);
+ return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
+}
+
+static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
+{
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+ debug("snd_usb_caiaq_pcm_hw_free(%p)\n", sub);
+ spin_lock_irq(&dev->spinlock);
+ deactivate_substream(dev, sub);
+ spin_unlock_irq(&dev->spinlock);
+ return snd_pcm_lib_free_pages(sub);
+}
+
+/* this should probably go upstream */
+#if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12
+#error "Change this table"
+#endif
+
+static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
+ 48000, 64000, 88200, 96000, 176400, 192000 };
+
+static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ int bytes_per_sample, bpp, ret, i;
+ int index = substream->number;
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ debug("snd_usb_caiaq_pcm_prepare(%p)\n", substream);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
+ else
+ dev->audio_in_buf_pos[index] = 0;
+
+ if (dev->streaming)
+ return 0;
+
+ /* the first client that opens a stream defines the sample rate
+ * setting for all subsequent calls, until the last client closed. */
+ for (i=0; i < ARRAY_SIZE(rates); i++)
+ if (runtime->rate == rates[i])
+ dev->pcm_info.rates = 1 << i;
+
+ snd_pcm_limit_hw_rates(runtime);
+
+ bytes_per_sample = BYTES_PER_SAMPLE;
+ if (dev->spec.data_alignment == 2)
+ bytes_per_sample++;
+
+ bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
+ * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
+
+ ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate,
+ runtime->sample_bits, bpp);
+ if (ret)
+ return ret;
+
+ ret = stream_start(dev);
+ if (ret)
+ return ret;
+
+ dev->output_running = 0;
+ wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ);
+ if (!dev->output_running) {
+ stream_stop(dev);
+ return -EPIPE;
+ }
+
+ return 0;
+}
+
+static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd)
+{
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ spin_lock(&dev->spinlock);
+ activate_substream(dev, sub);
+ spin_unlock(&dev->spinlock);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ spin_lock(&dev->spinlock);
+ deactivate_substream(dev, sub);
+ spin_unlock(&dev->spinlock);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t
+snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
+{
+ int index = sub->number;
+ struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+
+ if (dev->input_panic || dev->output_panic)
+ return SNDRV_PCM_POS_XRUN;
+
+ if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ return bytes_to_frames(sub->runtime,
+ dev->audio_out_buf_pos[index]);
+ else
+ return bytes_to_frames(sub->runtime,
+ dev->audio_in_buf_pos[index]);
+}
+
+/* operators for both playback and capture */
+static struct snd_pcm_ops snd_usb_caiaq_ops = {
+ .open = snd_usb_caiaq_substream_open,
+ .close = snd_usb_caiaq_substream_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_usb_caiaq_pcm_hw_params,
+ .hw_free = snd_usb_caiaq_pcm_hw_free,
+ .prepare = snd_usb_caiaq_pcm_prepare,
+ .trigger = snd_usb_caiaq_pcm_trigger,
+ .pointer = snd_usb_caiaq_pcm_pointer
+};
+
+static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
+ struct snd_pcm_substream **subs)
+{
+ int stream, pb, *cnt;
+ struct snd_pcm_substream *sub;
+
+ for (stream = 0; stream < dev->n_streams; stream++) {
+ sub = subs[stream];
+ if (!sub)
+ continue;
+
+ pb = frames_to_bytes(sub->runtime,
+ sub->runtime->period_size);
+ cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ &dev->period_out_count[stream] :
+ &dev->period_in_count[stream];
+
+ if (*cnt >= pb) {
+ snd_pcm_period_elapsed(sub);
+ *cnt %= pb;
+ }
+ }
+}
+
+static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
+ const struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
+ struct snd_pcm_substream *sub;
+ int stream, i;
+
+ if (all_substreams_zero(dev->sub_capture))
+ return;
+
+ spin_lock(&dev->spinlock);
+
+ for (i = 0; i < iso->actual_length;) {
+ for (stream = 0; stream < dev->n_streams; stream++, i++) {
+ sub = dev->sub_capture[stream];
+ if (sub) {
+ struct snd_pcm_runtime *rt = sub->runtime;
+ char *audio_buf = rt->dma_area;
+ int sz = frames_to_bytes(rt, rt->buffer_size);
+ audio_buf[dev->audio_in_buf_pos[stream]++]
+ = usb_buf[i];
+ dev->period_in_count[stream]++;
+ if (dev->audio_in_buf_pos[stream] == sz)
+ dev->audio_in_buf_pos[stream] = 0;
+ }
+ }
+ }
+
+ spin_unlock(&dev->spinlock);
+}
+
+static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
+ const struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
+ unsigned char check_byte;
+ struct snd_pcm_substream *sub;
+ int stream, i;
+
+ spin_lock(&dev->spinlock);
+
+ for (i = 0; i < iso->actual_length;) {
+ if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
+ for (stream = 0;
+ stream < dev->n_streams;
+ stream++, i++) {
+ if (dev->first_packet)
+ continue;
+
+ check_byte = MAKE_CHECKBYTE(dev, stream, i);
+
+ if ((usb_buf[i] & 0x3f) != check_byte)
+ dev->input_panic = 1;
+
+ if (usb_buf[i] & 0x80)
+ dev->output_panic = 1;
+ }
+ }
+ dev->first_packet = 0;
+
+ for (stream = 0; stream < dev->n_streams; stream++, i++) {
+ sub = dev->sub_capture[stream];
+ if (sub) {
+ struct snd_pcm_runtime *rt = sub->runtime;
+ char *audio_buf = rt->dma_area;
+ int sz = frames_to_bytes(rt, rt->buffer_size);
+ audio_buf[dev->audio_in_buf_pos[stream]++]
+ = usb_buf[i];
+ dev->period_in_count[stream]++;
+ if (dev->audio_in_buf_pos[stream] == sz)
+ dev->audio_in_buf_pos[stream] = 0;
+ }
+ }
+ }
+
+ spin_unlock(&dev->spinlock);
+}
+
+static void read_in_urb(struct snd_usb_caiaqdev *dev,
+ const struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ if (!dev->streaming)
+ return;
+
+ switch (dev->spec.data_alignment) {
+ case 0:
+ read_in_urb_mode0(dev, urb, iso);
+ break;
+ case 2:
+ read_in_urb_mode2(dev, urb, iso);
+ break;
+ }
+
+ if (dev->input_panic || dev->output_panic) {
+ debug("streaming error detected %s %s\n",
+ dev->input_panic ? "(input)" : "",
+ dev->output_panic ? "(output)" : "");
+ }
+
+ check_for_elapsed_periods(dev, dev->sub_capture);
+}
+
+static void fill_out_urb(struct snd_usb_caiaqdev *dev,
+ struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
+ struct snd_pcm_substream *sub;
+ int stream, i;
+
+ spin_lock(&dev->spinlock);
+
+ for (i = 0; i < iso->length;) {
+ for (stream = 0; stream < dev->n_streams; stream++) {
+ sub = dev->sub_playback[stream];
+ if (sub) {
+ struct snd_pcm_runtime *rt = sub->runtime;
+ char *audio_buf = rt->dma_area;
+ int sz = frames_to_bytes(rt, rt->buffer_size);
+ usb_buf[i++]
+ = audio_buf[dev->audio_out_buf_pos[stream]++];
+ dev->audio_out_buf_pos[stream]++;
+ if (dev->audio_out_buf_pos[stream] == sz)
+ dev->audio_out_buf_pos[stream] = 0;
+ } else
+ usb_buf[i++] = 0;
+
+ /* fill in the check bytes */
+ if (dev->spec.data_alignment == 2 &&
+ i % (dev->n_streams * BYTES_PER_SAMPLE_USB) ==
+ (dev->n_streams * CHANNELS_PER_STREAM))
+ for (stream = 0; stream < dev->n_streams; stream++, i++)
+ usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
+ }
+ }
+
+ spin_unlock(&dev->spinlock);
+ check_for_elapsed_periods(dev, dev->sub_playback);
+}
+
+static void read_completed(struct urb *urb)
+{
+ struct snd_usb_caiaq_cb_info *info = urb->context;
+ struct snd_usb_caiaqdev *dev;
+ struct urb *out;
+ int frame, len, send_it = 0, outframe = 0;
+
+ if (urb->status || !info)
+ return;
+
+ dev = info->dev;
+ if (!dev->streaming)
+ return;
+
+ out = dev->data_urbs_out[info->index];
+
+ /* read the recently received packet and send back one which has
+ * the same layout */
+ for (frame = 0; frame < FRAMES_PER_URB; frame++) {
+ if (urb->iso_frame_desc[frame].status)
+ continue;
+
+ len = urb->iso_frame_desc[outframe].actual_length;
+ out->iso_frame_desc[outframe].length = len;
+ out->iso_frame_desc[outframe].actual_length = 0;
+ out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
+
+ if (len > 0) {
+ fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
+ read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
+ send_it = 1;
+ }
+
+ outframe++;
+ }
+
+ if (send_it) {
+ out->number_of_packets = FRAMES_PER_URB;
+ out->transfer_flags = URB_ISO_ASAP;
+ usb_submit_urb(out, GFP_ATOMIC);
+ }
+
+ /* re-submit inbound urb */
+ for (frame = 0; frame < FRAMES_PER_URB; frame++) {
+ urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
+ urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
+ urb->iso_frame_desc[frame].actual_length = 0;
+ }
+
+ urb->number_of_packets = FRAMES_PER_URB;
+ urb->transfer_flags = URB_ISO_ASAP;
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void write_completed(struct urb *urb)
+{
+ struct snd_usb_caiaq_cb_info *info = urb->context;
+ struct snd_usb_caiaqdev *dev = info->dev;
+
+ if (!dev->output_running) {
+ dev->output_running = 1;
+ wake_up(&dev->prepare_wait_queue);
+ }
+}
+
+static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
+{
+ int i, frame;
+ struct urb **urbs;
+ struct usb_device *usb_dev = dev->chip.dev;
+ unsigned int pipe;
+
+ pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
+ usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
+ usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
+
+ urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL);
+ if (!urbs) {
+ log("unable to kmalloc() urbs, OOM!?\n");
+ *ret = -ENOMEM;
+ return NULL;
+ }
+
+ for (i = 0; i < N_URBS; i++) {
+ urbs[i] = usb_alloc_urb(FRAMES_PER_URB, GFP_KERNEL);
+ if (!urbs[i]) {
+ log("unable to usb_alloc_urb(), OOM!?\n");
+ *ret = -ENOMEM;
+ return urbs;
+ }
+
+ urbs[i]->transfer_buffer =
+ kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
+ if (!urbs[i]->transfer_buffer) {
+ log("unable to kmalloc() transfer buffer, OOM!?\n");
+ *ret = -ENOMEM;
+ return urbs;
+ }
+
+ for (frame = 0; frame < FRAMES_PER_URB; frame++) {
+ struct usb_iso_packet_descriptor *iso =
+ &urbs[i]->iso_frame_desc[frame];
+
+ iso->offset = BYTES_PER_FRAME * frame;
+ iso->length = BYTES_PER_FRAME;
+ }
+
+ urbs[i]->dev = usb_dev;
+ urbs[i]->pipe = pipe;
+ urbs[i]->transfer_buffer_length = FRAMES_PER_URB
+ * BYTES_PER_FRAME;
+ urbs[i]->context = &dev->data_cb_info[i];
+ urbs[i]->interval = 1;
+ urbs[i]->transfer_flags = URB_ISO_ASAP;
+ urbs[i]->number_of_packets = FRAMES_PER_URB;
+ urbs[i]->complete = (dir == SNDRV_PCM_STREAM_CAPTURE) ?
+ read_completed : write_completed;
+ }
+
+ *ret = 0;
+ return urbs;
+}
+
+static void free_urbs(struct urb **urbs)
+{
+ int i;
+
+ if (!urbs)
+ return;
+
+ for (i = 0; i < N_URBS; i++) {
+ if (!urbs[i])
+ continue;
+
+ usb_kill_urb(urbs[i]);
+ kfree(urbs[i]->transfer_buffer);
+ usb_free_urb(urbs[i]);
+ }
+
+ kfree(urbs);
+}
+
+int __devinit snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
+{
+ int i, ret;
+
+ dev->n_audio_in = max(dev->spec.num_analog_audio_in,
+ dev->spec.num_digital_audio_in) /
+ CHANNELS_PER_STREAM;
+ dev->n_audio_out = max(dev->spec.num_analog_audio_out,
+ dev->spec.num_digital_audio_out) /
+ CHANNELS_PER_STREAM;
+ dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
+
+ debug("dev->n_audio_in = %d\n", dev->n_audio_in);
+ debug("dev->n_audio_out = %d\n", dev->n_audio_out);
+ debug("dev->n_streams = %d\n", dev->n_streams);
+
+ if (dev->n_streams > MAX_STREAMS) {
+ log("unable to initialize device, too many streams.\n");
+ return -EINVAL;
+ }
+
+ ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
+ dev->n_audio_out, dev->n_audio_in, &dev->pcm);
+
+ if (ret < 0) {
+ log("snd_pcm_new() returned %d\n", ret);
+ return ret;
+ }
+
+ dev->pcm->private_data = dev;
+ strcpy(dev->pcm->name, dev->product_name);
+
+ memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
+ memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
+
+ memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
+ sizeof(snd_usb_caiaq_pcm_hardware));
+
+ /* setup samplerates */
+ dev->samplerates = dev->pcm_info.rates;
+ switch (dev->chip.usb_id) {
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
+ dev->samplerates |= SNDRV_PCM_RATE_88200;
+ dev->samplerates |= SNDRV_PCM_RATE_192000;
+ break;
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
+ dev->samplerates |= SNDRV_PCM_RATE_88200;
+ break;
+ }
+
+ snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &snd_usb_caiaq_ops);
+ snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &snd_usb_caiaq_ops);
+
+ snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
+ SNDRV_DMA_TYPE_CONTINUOUS,
+ snd_dma_continuous_data(GFP_KERNEL),
+ MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
+
+ dev->data_cb_info =
+ kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
+ GFP_KERNEL);
+
+ if (!dev->data_cb_info)
+ return -ENOMEM;
+
+ for (i = 0; i < N_URBS; i++) {
+ dev->data_cb_info[i].dev = dev;
+ dev->data_cb_info[i].index = i;
+ }
+
+ dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
+ if (ret < 0) {
+ kfree(dev->data_cb_info);
+ free_urbs(dev->data_urbs_in);
+ return ret;
+ }
+
+ dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
+ if (ret < 0) {
+ kfree(dev->data_cb_info);
+ free_urbs(dev->data_urbs_in);
+ free_urbs(dev->data_urbs_out);
+ return ret;
+ }
+
+ return 0;
+}
+
+void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev)
+{
+ debug("snd_usb_caiaq_audio_free (%p)\n", dev);
+ stream_stop(dev);
+ free_urbs(dev->data_urbs_in);
+ free_urbs(dev->data_urbs_out);
+ kfree(dev->data_cb_info);
+}
+
--- /dev/null
+#ifndef CAIAQ_AUDIO_H
+#define CAIAQ_AUDIO_H
+
+int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev);
+void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev);
+
+#endif /* CAIAQ_AUDIO_H */
--- /dev/null
+/*
+ * caiaq.c: ALSA driver for caiaq/NativeInstruments devices
+ *
+ * Copyright (c) 2007 Daniel Mack <daniel@caiaq.de>
+ * Karsten Wiese <fzu@wemgehoertderstaat.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/input.h>
+#include <linux/spinlock.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/rawmidi.h>
+
+#include "caiaq-device.h"
+#include "caiaq-audio.h"
+#include "caiaq-midi.h"
+
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+#include "caiaq-input.h"
+#endif
+
+MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
+MODULE_DESCRIPTION("caiaq USB audio, version 1.1.0");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
+ "{Native Instruments, Kore Controller},"
+ "{Native Instruments, Audio Kontrol 1}"
+ "{Native Instruments, Audio 8 DJ}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
+static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+static int snd_card_used[SNDRV_CARDS];
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for the caiaq sound device");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for the caiaq soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable the caiaq soundcard.");
+
+enum {
+ SAMPLERATE_44100 = 0,
+ SAMPLERATE_48000 = 1,
+ SAMPLERATE_96000 = 2,
+ SAMPLERATE_192000 = 3,
+ SAMPLERATE_88200 = 4,
+ SAMPLERATE_INVALID = 0xff
+};
+
+enum {
+ DEPTH_NONE = 0,
+ DEPTH_16 = 1,
+ DEPTH_24 = 2,
+ DEPTH_32 = 3
+};
+
+static struct usb_device_id snd_usb_id_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = USB_VID_NATIVEINSTRUMENTS,
+ .idProduct = USB_PID_RIGKONTROL2
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = USB_VID_NATIVEINSTRUMENTS,
+ .idProduct = USB_PID_KORECONTROLLER
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = USB_VID_NATIVEINSTRUMENTS,
+ .idProduct = USB_PID_AK1
+ },
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
+ .idVendor = USB_VID_NATIVEINSTRUMENTS,
+ .idProduct = USB_PID_AUDIO8DJ
+ },
+ { /* terminator */ }
+};
+
+static void usb_ep1_command_reply_dispatch (struct urb* urb)
+{
+ int ret;
+ struct snd_usb_caiaqdev *dev = urb->context;
+ unsigned char *buf = urb->transfer_buffer;
+
+ if (urb->status || !dev) {
+ log("received EP1 urb->status = %i\n", urb->status);
+ return;
+ }
+
+ switch(buf[0]) {
+ case EP1_CMD_GET_DEVICE_INFO:
+ memcpy(&dev->spec, buf+1, sizeof(struct caiaq_device_spec));
+ dev->spec.fw_version = le16_to_cpu(dev->spec.fw_version);
+ debug("device spec (firmware %d): audio: %d in, %d out, "
+ "MIDI: %d in, %d out, data alignment %d\n",
+ dev->spec.fw_version,
+ dev->spec.num_analog_audio_in,
+ dev->spec.num_analog_audio_out,
+ dev->spec.num_midi_in,
+ dev->spec.num_midi_out,
+ dev->spec.data_alignment);
+
+ dev->spec_received++;
+ wake_up(&dev->ep1_wait_queue);
+ break;
+ case EP1_CMD_AUDIO_PARAMS:
+ dev->audio_parm_answer = buf[1];
+ wake_up(&dev->ep1_wait_queue);
+ break;
+ case EP1_CMD_MIDI_READ:
+ snd_usb_caiaq_midi_handle_input(dev, buf[1], buf + 3, buf[2]);
+ break;
+
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+ case EP1_CMD_READ_ERP:
+ case EP1_CMD_READ_ANALOG:
+ case EP1_CMD_READ_IO:
+ snd_usb_caiaq_input_dispatch(dev, buf, urb->actual_length);
+ break;
+#endif
+ }
+
+ dev->ep1_in_urb.actual_length = 0;
+ ret = usb_submit_urb(&dev->ep1_in_urb, GFP_ATOMIC);
+ if (ret < 0)
+ log("unable to submit urb. OOM!?\n");
+}
+
+static int send_command (struct snd_usb_caiaqdev *dev,
+ unsigned char command,
+ const unsigned char *buffer,
+ int len)
+{
+ int actual_len;
+ struct usb_device *usb_dev = dev->chip.dev;
+
+ if (!usb_dev)
+ return -EIO;
+
+ if (len > EP1_BUFSIZE - 1)
+ len = EP1_BUFSIZE - 1;
+
+ if (buffer && len > 0)
+ memcpy(dev->ep1_out_buf+1, buffer, len);
+
+ dev->ep1_out_buf[0] = command;
+ return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
+ dev->ep1_out_buf, len+1, &actual_len, 200);
+}
+
+int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
+ int rate, int depth, int bpp)
+{
+ int ret;
+ char tmp[5];
+
+ switch (rate) {
+ case 44100: tmp[0] = SAMPLERATE_44100; break;
+ case 48000: tmp[0] = SAMPLERATE_48000; break;
+ case 88200: tmp[0] = SAMPLERATE_88200; break;
+ case 96000: tmp[0] = SAMPLERATE_96000; break;
+ case 192000: tmp[0] = SAMPLERATE_192000; break;
+ default: return -EINVAL;
+ }
+
+ switch (depth) {
+ case 16: tmp[1] = DEPTH_16; break;
+ case 24: tmp[1] = DEPTH_24; break;
+ default: return -EINVAL;
+ }
+
+ tmp[2] = bpp & 0xff;
+ tmp[3] = bpp >> 8;
+ tmp[4] = 1; /* packets per microframe */
+
+ debug("setting audio params: %d Hz, %d bits, %d bpp\n",
+ rate, depth, bpp);
+
+ dev->audio_parm_answer = -1;
+ ret = send_command(dev, EP1_CMD_AUDIO_PARAMS, tmp, sizeof(tmp));
+
+ if (ret)
+ return ret;
+
+ if (!wait_event_timeout(dev->ep1_wait_queue,
+ dev->audio_parm_answer >= 0, HZ))
+ return -EPIPE;
+
+ if (dev->audio_parm_answer != 1)
+ debug("unable to set the device's audio params\n");
+
+ return dev->audio_parm_answer == 1 ? 0 : -EINVAL;
+}
+
+int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *dev,
+ int digital, int analog, int erp)
+{
+ char tmp[3] = { digital, analog, erp };
+ return send_command(dev, EP1_CMD_AUTO_MSG, tmp, sizeof(tmp));
+}
+
+static void setup_card(struct snd_usb_caiaqdev *dev)
+{
+ int ret;
+ char val[3];
+
+ /* device-specific startup specials */
+ switch (dev->chip.usb_id) {
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
+ /* RigKontrol2 - display centered dash ('-') */
+ val[0] = 0x00;
+ val[1] = 0x00;
+ val[2] = 0x01;
+ send_command(dev, EP1_CMD_WRITE_IO, val, 3);
+ break;
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
+ /* Audio Kontrol 1 - make USB-LED stop blinking */
+ val[0] = 0x00;
+ send_command(dev, EP1_CMD_WRITE_IO, val, 1);
+ break;
+ }
+
+ ret = snd_usb_caiaq_audio_init(dev);
+ if (ret < 0)
+ log("Unable to set up audio system (ret=%d)\n", ret);
+
+ ret = snd_usb_caiaq_midi_init(dev);
+ if (ret < 0)
+ log("Unable to set up MIDI system (ret=%d)\n", ret);
+
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+ ret = snd_usb_caiaq_input_init(dev);
+ if (ret < 0)
+ log("Unable to set up input system (ret=%d)\n", ret);
+#endif
+
+ /* finally, register the card and all its sub-instances */
+ ret = snd_card_register(dev->chip.card);
+ if (ret < 0) {
+ log("snd_card_register() returned %d\n", ret);
+ snd_card_free(dev->chip.card);
+ }
+}
+
+static struct snd_card* create_card(struct usb_device* usb_dev)
+{
+ int devnum;
+ struct snd_card *card;
+ struct snd_usb_caiaqdev *dev;
+
+ for (devnum = 0; devnum < SNDRV_CARDS; devnum++)
+ if (enable[devnum] && !snd_card_used[devnum])
+ break;
+
+ if (devnum >= SNDRV_CARDS)
+ return NULL;
+
+ card = snd_card_new(index[devnum], id[devnum], THIS_MODULE,
+ sizeof(struct snd_usb_caiaqdev));
+ if (!card)
+ return NULL;
+
+ dev = caiaqdev(card);
+ dev->chip.dev = usb_dev;
+ dev->chip.card = card;
+ dev->chip.usb_id = USB_ID(usb_dev->descriptor.idVendor,
+ usb_dev->descriptor.idProduct);
+ spin_lock_init(&dev->spinlock);
+ snd_card_set_dev(card, &usb_dev->dev);
+
+ return card;
+}
+
+static int init_card(struct snd_usb_caiaqdev *dev)
+{
+ char *c;
+ struct usb_device *usb_dev = dev->chip.dev;
+ struct snd_card *card = dev->chip.card;
+ int err, len;
+
+ if (usb_set_interface(usb_dev, 0, 1) != 0) {
+ log("can't set alt interface.\n");
+ return -EIO;
+ }
+
+ usb_init_urb(&dev->ep1_in_urb);
+ usb_init_urb(&dev->midi_out_urb);
+
+ usb_fill_bulk_urb(&dev->ep1_in_urb, usb_dev,
+ usb_rcvbulkpipe(usb_dev, 0x1),
+ dev->ep1_in_buf, EP1_BUFSIZE,
+ usb_ep1_command_reply_dispatch, dev);
+
+ usb_fill_bulk_urb(&dev->midi_out_urb, usb_dev,
+ usb_sndbulkpipe(usb_dev, 0x1),
+ dev->midi_out_buf, EP1_BUFSIZE,
+ snd_usb_caiaq_midi_output_done, dev);
+
+ init_waitqueue_head(&dev->ep1_wait_queue);
+ init_waitqueue_head(&dev->prepare_wait_queue);
+
+ if (usb_submit_urb(&dev->ep1_in_urb, GFP_KERNEL) != 0)
+ return -EIO;
+
+ err = send_command(dev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
+ if (err)
+ return err;
+
+ if (!wait_event_timeout(dev->ep1_wait_queue, dev->spec_received, HZ))
+ return -ENODEV;
+
+ usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
+ dev->vendor_name, CAIAQ_USB_STR_LEN);
+
+ usb_string(usb_dev, usb_dev->descriptor.iProduct,
+ dev->product_name, CAIAQ_USB_STR_LEN);
+
+ usb_string(usb_dev, usb_dev->descriptor.iSerialNumber,
+ dev->serial, CAIAQ_USB_STR_LEN);
+
+ /* terminate serial string at first white space occurence */
+ c = strchr(dev->serial, ' ');
+ if (c)
+ *c = '\0';
+
+ strcpy(card->driver, MODNAME);
+ strcpy(card->shortname, dev->product_name);
+
+ len = snprintf(card->longname, sizeof(card->longname),
+ "%s %s (serial %s, ",
+ dev->vendor_name, dev->product_name, dev->serial);
+
+ if (len < sizeof(card->longname) - 2)
+ len += usb_make_path(usb_dev, card->longname + len,
+ sizeof(card->longname) - len);
+
+ card->longname[len++] = ')';
+ card->longname[len] = '\0';
+ setup_card(dev);
+ return 0;
+}
+
+static int snd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ int ret;
+ struct snd_card *card;
+ struct usb_device *device = interface_to_usbdev(intf);
+
+ card = create_card(device);
+
+ if (!card)
+ return -ENOMEM;
+
+ dev_set_drvdata(&intf->dev, card);
+ ret = init_card(caiaqdev(card));
+ if (ret < 0) {
+ log("unable to init card! (ret=%d)\n", ret);
+ snd_card_free(card);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void snd_disconnect(struct usb_interface *intf)
+{
+ struct snd_usb_caiaqdev *dev;
+ struct snd_card *card = dev_get_drvdata(&intf->dev);
+
+ debug("snd_disconnect(%p)\n", intf);
+
+ if (!card)
+ return;
+
+ dev = caiaqdev(card);
+ snd_card_disconnect(card);
+
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+ snd_usb_caiaq_input_free(dev);
+#endif
+ snd_usb_caiaq_audio_free(dev);
+
+ usb_kill_urb(&dev->ep1_in_urb);
+ usb_kill_urb(&dev->midi_out_urb);
+
+ snd_card_free(card);
+ usb_reset_device(interface_to_usbdev(intf));
+}
+
+
+MODULE_DEVICE_TABLE(usb, snd_usb_id_table);
+static struct usb_driver snd_usb_driver = {
+ .name = MODNAME,
+ .probe = snd_probe,
+ .disconnect = snd_disconnect,
+ .id_table = snd_usb_id_table,
+};
+
+static int __init snd_module_init(void)
+{
+ return usb_register(&snd_usb_driver);
+}
+
+static void __exit snd_module_exit(void)
+{
+ usb_deregister(&snd_usb_driver);
+}
+
+module_init(snd_module_init)
+module_exit(snd_module_exit)
+
--- /dev/null
+#ifndef CAIAQ_DEVICE_H
+#define CAIAQ_DEVICE_H
+
+#include "../usbaudio.h"
+
+#define USB_VID_NATIVEINSTRUMENTS 0x17cc
+
+#define USB_PID_RIGKONTROL2 0x1969
+#define USB_PID_KORECONTROLLER 0x4711
+#define USB_PID_AK1 0x0815
+#define USB_PID_AUDIO8DJ 0x1978
+
+#define EP1_BUFSIZE 64
+#define CAIAQ_USB_STR_LEN 0xff
+#define MAX_STREAMS 32
+
+//#define SND_USB_CAIAQ_DEBUG
+
+#define MODNAME "snd-usb-caiaq"
+#define log(x...) snd_printk(KERN_WARNING MODNAME" log: " x)
+
+#ifdef SND_USB_CAIAQ_DEBUG
+#define debug(x...) snd_printk(KERN_WARNING MODNAME " debug: " x)
+#else
+#define debug(x...) do { } while(0)
+#endif
+
+#define EP1_CMD_GET_DEVICE_INFO 0x1
+#define EP1_CMD_READ_ERP 0x2
+#define EP1_CMD_READ_ANALOG 0x3
+#define EP1_CMD_READ_IO 0x4
+#define EP1_CMD_WRITE_IO 0x5
+#define EP1_CMD_MIDI_READ 0x6
+#define EP1_CMD_MIDI_WRITE 0x7
+#define EP1_CMD_AUDIO_PARAMS 0x9
+#define EP1_CMD_AUTO_MSG 0xb
+
+struct caiaq_device_spec {
+ unsigned short fw_version;
+ unsigned char hw_subtype;
+ unsigned char num_erp;
+ unsigned char num_analog_in;
+ unsigned char num_digital_in;
+ unsigned char num_digital_out;
+ unsigned char num_analog_audio_out;
+ unsigned char num_analog_audio_in;
+ unsigned char num_digital_audio_out;
+ unsigned char num_digital_audio_in;
+ unsigned char num_midi_out;
+ unsigned char num_midi_in;
+ unsigned char data_alignment;
+} __attribute__ ((packed));
+
+struct snd_usb_caiaq_cb_info;
+
+struct snd_usb_caiaqdev {
+ struct snd_usb_audio chip;
+
+ struct urb ep1_in_urb;
+ struct urb midi_out_urb;
+ struct urb **data_urbs_in;
+ struct urb **data_urbs_out;
+ struct snd_usb_caiaq_cb_info *data_cb_info;
+
+ unsigned char ep1_in_buf[EP1_BUFSIZE];
+ unsigned char ep1_out_buf[EP1_BUFSIZE];
+ unsigned char midi_out_buf[EP1_BUFSIZE];
+
+ struct caiaq_device_spec spec;
+ spinlock_t spinlock;
+ wait_queue_head_t ep1_wait_queue;
+ wait_queue_head_t prepare_wait_queue;
+ int spec_received, audio_parm_answer;
+
+ char vendor_name[CAIAQ_USB_STR_LEN];
+ char product_name[CAIAQ_USB_STR_LEN];
+ char serial[CAIAQ_USB_STR_LEN];
+
+ int n_streams, n_audio_in, n_audio_out;
+ int streaming, first_packet, output_running;
+ int audio_in_buf_pos[MAX_STREAMS];
+ int audio_out_buf_pos[MAX_STREAMS];
+ int period_in_count[MAX_STREAMS];
+ int period_out_count[MAX_STREAMS];
+ int input_panic, output_panic;
+ char *audio_in_buf, *audio_out_buf;
+ unsigned int samplerates;
+
+ struct snd_pcm_substream *sub_playback[MAX_STREAMS];
+ struct snd_pcm_substream *sub_capture[MAX_STREAMS];
+
+ /* Linux input */
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+ struct input_dev *input_dev;
+#endif
+
+ /* ALSA */
+ struct snd_pcm *pcm;
+ struct snd_pcm_hardware pcm_info;
+ struct snd_rawmidi *rmidi;
+ struct snd_rawmidi_substream *midi_receive_substream;
+ struct snd_rawmidi_substream *midi_out_substream;
+};
+
+struct snd_usb_caiaq_cb_info {
+ struct snd_usb_caiaqdev *dev;
+ int index;
+};
+
+#define caiaqdev(c) ((struct snd_usb_caiaqdev*)(c)->private_data)
+
+int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev, int rate, int depth, int bbp);
+int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *dev, int digital, int analog, int erp);
+
+
+#endif /* CAIAQ_DEVICE_H */
--- /dev/null
+/*
+ * Copyright (c) 2006,2007 Daniel Mack, Tim Ruetz
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/input.h>
+#include <linux/usb.h>
+#include <linux/spinlock.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/rawmidi.h>
+#include <sound/pcm.h>
+#include "caiaq-device.h"
+#include "caiaq-input.h"
+
+#ifdef CONFIG_SND_USB_CAIAQ_INPUT
+
+static unsigned char keycode_ak1[] = { KEY_C, KEY_B, KEY_A };
+static unsigned char keycode_rk2[] = { KEY_1, KEY_2, KEY_3, KEY_4,
+ KEY_5, KEY_6, KEY_7 };
+
+#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 void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
+ const char *buf, unsigned int len)
+{
+ switch(dev->input_dev->id.product) {
+ case USB_PID_RIGKONTROL2:
+ input_report_abs(dev->input_dev, ABS_X, (buf[4] << 8) |buf[5]);
+ input_report_abs(dev->input_dev, ABS_Y, (buf[0] << 8) |buf[1]);
+ input_report_abs(dev->input_dev, ABS_Z, (buf[2] << 8) |buf[3]);
+ input_sync(dev->input_dev);
+ break;
+ }
+}
+
+static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
+ const char *buf, unsigned int len)
+{
+ int i;
+
+ switch(dev->input_dev->id.product) {
+ case USB_PID_AK1:
+ i = decode_erp(buf[0], buf[1]);
+ input_report_abs(dev->input_dev, ABS_X, i);
+ input_sync(dev->input_dev);
+ break;
+ }
+}
+
+static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
+ char *buf, unsigned int len)
+{
+ int i;
+ unsigned char *keycode = dev->input_dev->keycode;
+
+ if (!keycode)
+ return;
+
+ if (dev->input_dev->id.product == USB_PID_RIGKONTROL2)
+ for (i=0; i<len; i++)
+ buf[i] = ~buf[i];
+
+ for (i=0; (i<dev->input_dev->keycodemax) && (i < len); i++)
+ input_report_key(dev->input_dev, keycode[i],
+ buf[i/8] & (1 << (i%8)));
+
+ input_sync(dev->input_dev);
+}
+
+void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
+ char *buf,
+ unsigned int len)
+{
+ if (!dev->input_dev || (len < 1))
+ return;
+
+ switch (buf[0]) {
+ case EP1_CMD_READ_ANALOG:
+ snd_caiaq_input_read_analog(dev, buf+1, len-1);
+ break;
+ case EP1_CMD_READ_ERP:
+ snd_caiaq_input_read_erp(dev, buf+1, len-1);
+ break;
+ case EP1_CMD_READ_IO:
+ snd_caiaq_input_read_io(dev, buf+1, len-1);
+ break;
+ }
+}
+
+int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
+{
+ struct usb_device *usb_dev = dev->chip.dev;
+ struct input_dev *input;
+ int i, ret;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = dev->product_name;
+ input->id.bustype = BUS_USB;
+ input->id.vendor = usb_dev->descriptor.idVendor;
+ input->id.product = usb_dev->descriptor.idProduct;
+ input->id.version = usb_dev->descriptor.bcdDevice;
+
+ switch (dev->chip.usb_id) {
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
+ input->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_Z);
+ input->keycode = keycode_rk2;
+ input->keycodesize = sizeof(char);
+ input->keycodemax = ARRAY_SIZE(keycode_rk2);
+ for (i=0; i<ARRAY_SIZE(keycode_rk2); i++)
+ set_bit(keycode_rk2[i], input->keybit);
+
+ 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(dev, 1, 10, 0);
+ break;
+ case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
+ input->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input->absbit[0] = BIT(ABS_X);
+ input->keycode = keycode_ak1;
+ input->keycodesize = sizeof(char);
+ input->keycodemax = ARRAY_SIZE(keycode_ak1);
+ for (i=0; i<ARRAY_SIZE(keycode_ak1); i++)
+ set_bit(keycode_ak1[i], input->keybit);
+
+ input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
+ snd_usb_caiaq_set_auto_msg(dev, 1, 0, 5);
+ break;
+ default:
+ /* no input methods supported on this device */
+ input_free_device(input);
+ return 0;
+ }
+
+ ret = input_register_device(input);
+ if (ret < 0) {
+ input_free_device(input);
+ return ret;
+ }
+
+ dev->input_dev = input;
+ return 0;
+}
+
+void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
+{
+ if (!dev || !dev->input_dev)
+ return;
+
+ input_unregister_device(dev->input_dev);
+ input_free_device(dev->input_dev);
+ dev->input_dev = NULL;
+}
+
+#endif /* CONFIG_SND_USB_CAIAQ_INPUT */
+
--- /dev/null
+#ifndef CAIAQ_INPUT_H
+#define CAIAQ_INPUT_H
+
+void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev, char *buf, unsigned int len);
+int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev);
+void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev);
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2006,2007 Daniel Mack
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/input.h>
+#include <linux/spinlock.h>
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/rawmidi.h>
+#include <sound/pcm.h>
+
+#include "caiaq-device.h"
+#include "caiaq-midi.h"
+
+
+static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
+{
+ return 0;
+}
+
+static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
+{
+ return 0;
+}
+
+static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+ struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
+
+ if (!dev)
+ return;
+
+ dev->midi_receive_substream = up ? substream : NULL;
+}
+
+
+static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
+{
+ return 0;
+}
+
+static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
+{
+ return 0;
+}
+
+static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
+ struct snd_rawmidi_substream *substream)
+{
+ int len, ret;
+
+ dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
+ dev->midi_out_buf[1] = 0; /* port */
+ len = snd_rawmidi_transmit_peek(substream, dev->midi_out_buf+3, EP1_BUFSIZE-3);
+
+ if (len <= 0)
+ return;
+
+ dev->midi_out_buf[2] = len;
+ dev->midi_out_urb.transfer_buffer_length = len+3;
+
+ ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
+ if (ret < 0)
+ log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed, %d\n",
+ substream, ret);
+}
+
+static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
+{
+ struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
+
+ if (dev->midi_out_substream != NULL)
+ return;
+
+ if (!up) {
+ dev->midi_out_substream = NULL;
+ return;
+ }
+
+ dev->midi_out_substream = substream;
+ snd_usb_caiaq_midi_send(dev, substream);
+}
+
+
+static struct snd_rawmidi_ops snd_usb_caiaq_midi_output =
+{
+ .open = snd_usb_caiaq_midi_output_open,
+ .close = snd_usb_caiaq_midi_output_close,
+ .trigger = snd_usb_caiaq_midi_output_trigger,
+};
+
+static struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
+{
+ .open = snd_usb_caiaq_midi_input_open,
+ .close = snd_usb_caiaq_midi_input_close,
+ .trigger = snd_usb_caiaq_midi_input_trigger,
+};
+
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev,
+ int port, const char *buf, int len)
+{
+ if (!dev->midi_receive_substream)
+ return;
+
+ snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
+}
+
+int __devinit snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
+{
+ int ret;
+ struct snd_rawmidi *rmidi;
+
+ ret = snd_rawmidi_new(device->chip.card, device->product_name, 0,
+ device->spec.num_midi_out,
+ device->spec.num_midi_in,
+ &rmidi);
+
+ if (ret < 0)
+ return ret;
+
+ strcpy(rmidi->name, device->product_name);
+
+ rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX;
+ rmidi->private_data = device;
+
+ if (device->spec.num_midi_out > 0) {
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
+ &snd_usb_caiaq_midi_output);
+ }
+
+ if (device->spec.num_midi_in > 0) {
+ rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
+ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
+ &snd_usb_caiaq_midi_input);
+ }
+
+ device->rmidi = rmidi;
+
+ return 0;
+}
+
+void snd_usb_caiaq_midi_output_done(struct urb* urb)
+{
+ struct snd_usb_caiaqdev *dev = urb->context;
+ char *buf = urb->transfer_buffer;
+
+ if (urb->status != 0)
+ return;
+
+ if (!dev->midi_out_substream)
+ return;
+
+ snd_rawmidi_transmit_ack(dev->midi_out_substream, buf[2]);
+ dev->midi_out_substream = NULL;
+ snd_usb_caiaq_midi_send(dev, dev->midi_out_substream);
+}
+
--- /dev/null
+#ifndef CAIAQ_MIDI_H
+#define CAIAQ_MIDI_H
+
+int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *dev);
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev, int port, const char *buf, int len);
+void snd_usb_caiaq_midi_output_done(struct urb* urb);
+
+#endif /* CAIAQ_MIDI_H */
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff