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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 <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
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@tiwai
Torsten Schenk authored and tiwai committed Apr 4, 2011
1 parent b84610b commit 2475b0d
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Showing 3 changed files with 137 additions and 47 deletions.
105 changes: 105 additions & 0 deletions sound/usb/6fire/control.c
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,15 @@ init_data[] = {
{ 0 } /* TERMINATING ENTRY */
};

static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 };
/* 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 {
DIGITAL_THRU_ONLY_SAMPLERATE = 3
};

static void usb6fire_control_master_vol_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
Expand Down Expand Up @@ -95,6 +104,67 @@ static void usb6fire_control_opt_coax_update(struct control_runtime *rt)
}
}

static int usb6fire_control_set_rate(struct control_runtime *rt, int rate)
{
int ret;
struct usb_device *device = rt->chip->dev;
struct comm_runtime *comm_rt = rt->chip->comm;

if (rate < 0 || rate >= CONTROL_N_RATES)
return -EINVAL;

ret = usb_set_interface(device, 1, rates_altsetting[rate]);
if (ret < 0)
return ret;

/* set soundcard clock */
ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rate],
rates_6fire_vh[rate]);
if (ret < 0)
return ret;

return 0;
}

static int usb6fire_control_set_channels(
struct control_runtime *rt, int n_analog_out,
int n_analog_in, bool spdif_out, bool spdif_in)
{
int ret;
struct comm_runtime *comm_rt = rt->chip->comm;

/* enable analog inputs and outputs
* (one bit per stereo-channel) */
ret = comm_rt->write16(comm_rt, 0x02, 0x02,
(1 << (n_analog_out / 2)) - 1,
(1 << (n_analog_in / 2)) - 1);
if (ret < 0)
return ret;

/* disable digital inputs and outputs */
/* TODO: use spdif_x to enable/disable digital channels */
ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00);
if (ret < 0)
return ret;

return 0;
}

static int usb6fire_control_streaming_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;

if (comm_rt) {
if (!rt->usb_streaming && rt->digital_thru_switch)
usb6fire_control_set_rate(rt,
DIGITAL_THRU_ONLY_SAMPLERATE);
return comm_rt->write16(comm_rt, 0x02, 0x00, 0x00,
(rt->usb_streaming ? 0x01 : 0x00) |
(rt->digital_thru_switch ? 0x08 : 0x00));
}
return -EINVAL;
}

static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
Expand Down Expand Up @@ -195,6 +265,28 @@ static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol,
return 0;
}

static int usb6fire_control_digital_thru_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
int changed = 0;

if (rt->digital_thru_switch != ucontrol->value.integer.value[0]) {
rt->digital_thru_switch = ucontrol->value.integer.value[0];
usb6fire_control_streaming_update(rt);
changed = 1;
}
return changed;
}

static int usb6fire_control_digital_thru_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = rt->digital_thru_switch;
return 0;
}

static struct __devinitdata snd_kcontrol_new elements[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
Expand Down Expand Up @@ -223,6 +315,15 @@ static struct __devinitdata snd_kcontrol_new elements[] = {
.get = usb6fire_control_opt_coax_get,
.put = usb6fire_control_opt_coax_put
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Digital Thru Playback Route",
.index = 0,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_mono_info,
.get = usb6fire_control_digital_thru_get,
.put = usb6fire_control_digital_thru_put
},
{}
};

Expand All @@ -238,6 +339,9 @@ int __devinit usb6fire_control_init(struct sfire_chip *chip)
return -ENOMEM;

rt->chip = chip;
rt->update_streaming = usb6fire_control_streaming_update;
rt->set_rate = usb6fire_control_set_rate;
rt->set_channels = usb6fire_control_set_channels;

i = 0;
while (init_data[i].type) {
Expand All @@ -249,6 +353,7 @@ int __devinit usb6fire_control_init(struct sfire_chip *chip)
usb6fire_control_opt_coax_update(rt);
usb6fire_control_line_phono_update(rt);
usb6fire_control_master_vol_update(rt);
usb6fire_control_streaming_update(rt);

i = 0;
while (elements[i].name) {
Expand Down
17 changes: 17 additions & 0 deletions sound/usb/6fire/control.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -21,12 +21,29 @@ enum {
CONTROL_MAX_ELEMENTS = 32
};

enum {
CONTROL_RATE_44KHZ,
CONTROL_RATE_48KHZ,
CONTROL_RATE_88KHZ,
CONTROL_RATE_96KHZ,
CONTROL_RATE_176KHZ,
CONTROL_RATE_192KHZ,
CONTROL_N_RATES
};

struct control_runtime {
int (*update_streaming)(struct control_runtime *rt);
int (*set_rate)(struct control_runtime *rt, int rate);
int (*set_channels)(struct control_runtime *rt, int n_analog_out,
int n_analog_in, bool spdif_out, bool spdif_in);

struct sfire_chip *chip;

struct snd_kcontrol *element[CONTROL_MAX_ELEMENTS];
bool opt_coax_switch;
bool line_phono_switch;
bool digital_thru_switch;
bool usb_streaming;
u8 master_vol;
};

Expand Down
62 changes: 15 additions & 47 deletions sound/usb/6fire/pcm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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
};
Expand All @@ -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 |
Expand Down Expand Up @@ -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]);
Expand Down Expand Up @@ -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;
}
}
Expand Down

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