ALSA: snd-usb-caiaq: Add support for Traktor Kontrol S4
This patch adds support for the new Traktor Kontrol S4 by Native
Instruments. It features a new audio data streaming model, MIDI
in and out ports, a huge number of 174 dimmable LEDs, 96 buttons
and 46 absolute encoder axis, including some rotary encoders.
All features are supported by the driver now.
Did some code refactoring along the way.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index 4328cad..68b9747 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -111,7 +111,7 @@
memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
dev->input_panic = 0;
dev->output_panic = 0;
- dev->first_packet = 1;
+ dev->first_packet = 4;
dev->streaming = 1;
dev->warned = 0;
@@ -169,7 +169,7 @@
}
static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
- struct snd_pcm_hw_params *hw_params)
+ struct snd_pcm_hw_params *hw_params)
{
debug("%s(%p)\n", __func__, sub);
return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
@@ -189,7 +189,7 @@
#endif
static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
- 48000, 64000, 88200, 96000, 176400, 192000 };
+ 48000, 64000, 88200, 96000, 176400, 192000 };
static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
{
@@ -201,12 +201,39 @@
debug("%s(%p)\n", __func__, substream);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- dev->period_out_count[index] = BYTES_PER_SAMPLE + 1;
- dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
+ int out_pos;
+
+ switch (dev->spec.data_alignment) {
+ case 0:
+ case 2:
+ out_pos = BYTES_PER_SAMPLE + 1;
+ break;
+ case 3:
+ default:
+ out_pos = 0;
+ break;
+ }
+
+ dev->period_out_count[index] = out_pos;
+ dev->audio_out_buf_pos[index] = out_pos;
} else {
- int in_pos = (dev->spec.data_alignment == 2) ? 0 : 2;
- dev->period_in_count[index] = BYTES_PER_SAMPLE + in_pos;
- dev->audio_in_buf_pos[index] = BYTES_PER_SAMPLE + in_pos;
+ int in_pos;
+
+ switch (dev->spec.data_alignment) {
+ case 0:
+ in_pos = BYTES_PER_SAMPLE + 2;
+ break;
+ case 2:
+ in_pos = BYTES_PER_SAMPLE;
+ break;
+ case 3:
+ default:
+ in_pos = 0;
+ break;
+ }
+
+ dev->period_in_count[index] = in_pos;
+ dev->audio_in_buf_pos[index] = in_pos;
}
if (dev->streaming)
@@ -221,7 +248,7 @@
snd_pcm_limit_hw_rates(runtime);
bytes_per_sample = BYTES_PER_SAMPLE;
- if (dev->spec.data_alignment == 2)
+ if (dev->spec.data_alignment >= 2)
bytes_per_sample++;
bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
@@ -253,6 +280,8 @@
{
struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+ debug("%s(%p) cmd %d\n", __func__, sub, cmd);
+
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
@@ -402,6 +431,61 @@
}
}
+static void read_in_urb_mode3(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;
+ int stream, i;
+
+ /* paranoia check */
+ if (iso->actual_length % (BYTES_PER_SAMPLE_USB * CHANNELS_PER_STREAM))
+ return;
+
+ for (i = 0; i < iso->actual_length;) {
+ for (stream = 0; stream < dev->n_streams; stream++) {
+ struct snd_pcm_substream *sub = dev->sub_capture[stream];
+ char *audio_buf = NULL;
+ int c, n, sz = 0;
+
+ if (sub && !dev->input_panic) {
+ struct snd_pcm_runtime *rt = sub->runtime;
+ audio_buf = rt->dma_area;
+ sz = frames_to_bytes(rt, rt->buffer_size);
+ }
+
+ for (c = 0; c < CHANNELS_PER_STREAM; c++) {
+ /* 3 audio data bytes, followed by 1 check byte */
+ if (audio_buf) {
+ for (n = 0; n < BYTES_PER_SAMPLE; n++) {
+ audio_buf[dev->audio_in_buf_pos[stream]++] = usb_buf[i+n];
+
+ if (dev->audio_in_buf_pos[stream] == sz)
+ dev->audio_in_buf_pos[stream] = 0;
+ }
+
+ dev->period_in_count[stream] += BYTES_PER_SAMPLE;
+ }
+
+ i += BYTES_PER_SAMPLE;
+
+ if (usb_buf[i] != ((stream << 1) | c) &&
+ !dev->first_packet) {
+ if (!dev->input_panic)
+ printk(" EXPECTED: %02x got %02x, c %d, stream %d, i %d\n",
+ ((stream << 1) | c), usb_buf[i], c, stream, i);
+ dev->input_panic = 1;
+ }
+
+ i++;
+ }
+ }
+ }
+
+ if (dev->first_packet > 0)
+ dev->first_packet--;
+}
+
static void read_in_urb(struct snd_usb_caiaqdev *dev,
const struct urb *urb,
const struct usb_iso_packet_descriptor *iso)
@@ -419,6 +503,9 @@
case 2:
read_in_urb_mode2(dev, urb, iso);
break;
+ case 3:
+ read_in_urb_mode3(dev, urb, iso);
+ break;
}
if ((dev->input_panic || dev->output_panic) && !dev->warned) {
@@ -429,9 +516,9 @@
}
}
-static void fill_out_urb(struct snd_usb_caiaqdev *dev,
- struct urb *urb,
- const struct usb_iso_packet_descriptor *iso)
+static void fill_out_urb_mode_0(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;
@@ -457,9 +544,67 @@
/* 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);
+ (dev->n_streams * CHANNELS_PER_STREAM))
+ for (stream = 0; stream < dev->n_streams; stream++, i++)
+ usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
+ }
+}
+
+static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *dev,
+ struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
+ int stream, i;
+
+ for (i = 0; i < iso->length;) {
+ for (stream = 0; stream < dev->n_streams; stream++) {
+ struct snd_pcm_substream *sub = dev->sub_playback[stream];
+ char *audio_buf = NULL;
+ int c, n, sz = 0;
+
+ if (sub) {
+ struct snd_pcm_runtime *rt = sub->runtime;
+ audio_buf = rt->dma_area;
+ sz = frames_to_bytes(rt, rt->buffer_size);
+ }
+
+ for (c = 0; c < CHANNELS_PER_STREAM; c++) {
+ for (n = 0; n < BYTES_PER_SAMPLE; n++) {
+ if (audio_buf) {
+ usb_buf[i+n] = audio_buf[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+n] = 0;
+ }
+ }
+
+ if (audio_buf)
+ dev->period_out_count[stream] += BYTES_PER_SAMPLE;
+
+ i += BYTES_PER_SAMPLE;
+
+ /* fill in the check byte pattern */
+ usb_buf[i++] = (stream << 1) | c;
+ }
+ }
+ }
+}
+
+static inline void fill_out_urb(struct snd_usb_caiaqdev *dev,
+ struct urb *urb,
+ const struct usb_iso_packet_descriptor *iso)
+{
+ switch (dev->spec.data_alignment) {
+ case 0:
+ case 2:
+ fill_out_urb_mode_0(dev, urb, iso);
+ break;
+ case 3:
+ fill_out_urb_mode_3(dev, urb, iso);
+ break;
}
}