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ALSA: 6fire - Add support of digital-thru mixer

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Digital Thru mixer element added (device can act as converter optical<->coax)

Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Torsten Schenk
2011-04-04 11:50:53 +02:00
committed by Takashi Iwai
parent b84610b95f
commit 2475b0d407
3 changed files with 137 additions and 47 deletions
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62
sound/usb/6fire/pcm.c
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@@ -17,26 +17,23 @@
#include "pcm.h"
#include "chip.h"
#include "comm.h"
#include "control.h"
enum {
OUT_N_CHANNELS = 6, IN_N_CHANNELS = 4
};
/* keep next two synced with
* FW_EP_W_MAX_PACKET_SIZE[] and RATES_MAX_PACKET_SIZE */
* FW_EP_W_MAX_PACKET_SIZE[] and RATES_MAX_PACKET_SIZE
* and CONTROL_RATE_XXX in control.h */
static const int rates_in_packet_size[] = { 228, 228, 420, 420, 404, 404 };
static const int rates_out_packet_size[] = { 228, 228, 420, 420, 604, 604 };
static const int rates[] = { 44100, 48000, 88200, 96000, 176400, 192000 };
static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 };
static const int rates_alsaid[] = {
SNDRV_PCM_RATE_44100, SNDRV_PCM_RATE_48000,
SNDRV_PCM_RATE_88200, SNDRV_PCM_RATE_96000,
SNDRV_PCM_RATE_176400, SNDRV_PCM_RATE_192000 };
/* values to write to soundcard register for all samplerates */
static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01};
static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00};
enum { /* settings for pcm */
OUT_EP = 6, IN_EP = 2, MAX_BUFSIZE = 128 * 1024
};
@@ -48,15 +45,6 @@ enum { /* pcm streaming states */
STREAM_STOPPING
};
enum { /* pcm sample rates (also index into RATES_XXX[]) */
RATE_44KHZ,
RATE_48KHZ,
RATE_88KHZ,
RATE_96KHZ,
RATE_176KHZ,
RATE_192KHZ
};
static const struct snd_pcm_hardware pcm_hw = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
@@ -87,57 +75,34 @@ static const struct snd_pcm_hardware pcm_hw = {
static int usb6fire_pcm_set_rate(struct pcm_runtime *rt)
{
int ret;
struct usb_device *device = rt->chip->dev;
struct comm_runtime *comm_rt = rt->chip->comm;
struct control_runtime *ctrl_rt = rt->chip->control;
if (rt->rate >= ARRAY_SIZE(rates))
return -EINVAL;
/* disable streaming */
ret = comm_rt->write16(comm_rt, 0x02, 0x00, 0x00, 0x00);
ctrl_rt->usb_streaming = false;
ret = ctrl_rt->update_streaming(ctrl_rt);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error stopping streaming while "
"setting samplerate %d.\n", rates[rt->rate]);
return ret;
}
ret = usb_set_interface(device, 1, rates_altsetting[rt->rate]);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error setting interface "
"altsetting %d for samplerate %d.\n",
rates_altsetting[rt->rate], rates[rt->rate]);
return ret;
}
/* set soundcard clock */
ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rt->rate],
rates_6fire_vh[rt->rate]);
ret = ctrl_rt->set_rate(ctrl_rt, rt->rate);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error setting samplerate %d.\n",
rates[rt->rate]);
return ret;
}
/* enable analog inputs and outputs
* (one bit per stereo-channel) */
ret = comm_rt->write16(comm_rt, 0x02, 0x02,
(1 << (OUT_N_CHANNELS / 2)) - 1,
(1 << (IN_N_CHANNELS / 2)) - 1);
ret = ctrl_rt->set_channels(ctrl_rt, OUT_N_CHANNELS, IN_N_CHANNELS,
false, false);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error initializing analog channels "
snd_printk(KERN_ERR PREFIX "error initializing channels "
"while setting samplerate %d.\n",
rates[rt->rate]);
return ret;
}
/* disable digital inputs and outputs */
ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error initializing digital "
"channels while setting samplerate %d.\n",
rates[rt->rate]);
return ret;
}
ret = comm_rt->write16(comm_rt, 0x02, 0x00, 0x00, 0x01);
ctrl_rt->usb_streaming = true;
ret = ctrl_rt->update_streaming(ctrl_rt);
if (ret < 0) {
snd_printk(KERN_ERR PREFIX "error starting streaming while "
"setting samplerate %d.\n", rates[rt->rate]);
@@ -168,12 +133,15 @@ static struct pcm_substream *usb6fire_pcm_get_substream(
static void usb6fire_pcm_stream_stop(struct pcm_runtime *rt)
{
int i;
struct control_runtime *ctrl_rt = rt->chip->control;
if (rt->stream_state != STREAM_DISABLED) {
for (i = 0; i < PCM_N_URBS; i++) {
usb_kill_urb(&rt->in_urbs[i].instance);
usb_kill_urb(&rt->out_urbs[i].instance);
}
ctrl_rt->usb_streaming = false;
ctrl_rt->update_streaming(ctrl_rt);
rt->stream_state = STREAM_DISABLED;
}
}