au88x0 - Replace spdif frequency control by IEC958 control

au88x0 - Replace spdif frequency control by IEC958 control

[Raymond]

[-- Attachment #1: Type: text/plain, Size: 1746 bytes --]

This patch only change the existing SPDIF Frequency(32000,44100,48000) 
control to the IEC958 control. It means that you will have to use 
"iecset rate" instead of alsamixer to change the SPDIF frequency.

1) What is the difference between Consumer mode and Professional mode ?

2) What change will be needed in order to support the SPDIF IN/OUT of 
Turtle Beach Montego II Quadzilla ?

3) Are there any status bit to detect the presence of the add-on SPDIF 
daugther card of MX300 and Montego II ?

aplay can be used to play 4-channels wave (e.g. out1lq.wav,out1rq.wav, 
out2lq.wav and out2rq.wav from the win9x driver) using the au8830 driver.
4) What change will be needed in /usr/share/cards/AU8830.conf to support 
Surround40 ?

The PCI SubSystem Device/Vendor ID of the sound card which can be used 
to identify specific sound card such as Dimaond MX300, Turtle Beach 
Montego II, SQ2500, ....can be obtained from the memory mapped I/O 
address 0x2a804 - au8810/30, 0x13004 - au8820.

5) Can any au8810/au8830 owner verify that EN_CODEC1 should/should not 
be used for those au8810/au8830 not using a quad codec ? (e.g Montego II 
using STAC9721 stereo codec, SQ1500, Vortex Advantage, ASUS L8400B 
notebook au8810 with modem)

#define VORTEX_CODEC_CTRL    0x29184
#define VORTEX_CODEC_EN        0x29190
#define        EN_CODEC0    0x00000300
#define     EN_AC98        0x00000c00 /* Modem AC98 slots. */
#define        EN_CODEC1    0x00003000
#define        EN_CODEC    (EN_CODEC0 | EN_CODEC1)

There is already a parser to parse the sound font au30gm.arl in the 
vortex control panel.
http://savannah.nongnu.org/support/?func=detailitem&item_id=103017

6) What else will be needed for the au88x0 driver to support wavetable 
synthesis ?


[-- Attachment #2: au88x0_iec958.patch --]
[-- Type: text/plain, Size: 6200 bytes --]

diff -Naur alsa-driver-1.0.8/alsa-kernel/pci/au88x0_orig/au88x0_pcm.c alsa-driver-1.0.8/alsa-kernel/pci/au88x0/au88x0_pcm.c
--- alsa-driver-1.0.8/alsa-kernel/pci/au88x0_orig/au88x0_pcm.c	2005-01-03 20:08:24.000000000 +0800
+++ alsa-driver-1.0.8/alsa-kernel/pci/au88x0/au88x0_pcm.c	2005-02-19 12:02:11.000000000 +0800
@@ -20,7 +20,7 @@
  * Supports ADB and WT DMA. Unfortunately, WT channels do not run yet.
  * It remains stuck,and DMA transfers do not happen. 
  */
-
+#include <sound/asoundef.h>
 #include <sound/driver.h>
 #include <linux/time.h>
 #include <sound/core.h>
@@ -431,61 +431,100 @@
 };
 
 /* SPDIF kcontrol */
-static int
-snd_vortex_spdif_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
-{
-	static char *texts[] = { "32000", "44100", "48000" };
 
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+static int snd_vortex_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 	uinfo->count = 1;
-	uinfo->value.enumerated.items = 3;
-	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
-		uinfo->value.enumerated.item =
-		    uinfo->value.enumerated.items - 1;
-	strcpy(uinfo->value.enumerated.name,
-	       texts[uinfo->value.enumerated.item]);
 	return 0;
 }
-static int
-snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+
+static int snd_vortex_spdif_default_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 {
 	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.iec958.status[0] = 0x00;
+	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
+	ucontrol->value.iec958.status[2] = 0x00;
+	switch(vortex->spdif_sr){
+	case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
+	case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
+	case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
+	};
+	return 0;
+}
 
-	if (vortex->spdif_sr == 32000)
-		ucontrol->value.enumerated.item[0] = 0;
-	if (vortex->spdif_sr == 44100)
-		ucontrol->value.enumerated.item[0] = 1;
-	if (vortex->spdif_sr == 48000)
-		ucontrol->value.enumerated.item[0] = 2;
+static int snd_vortex_spdif_default_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+	switch(ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS){
+	case IEC958_AES3_CON_FS_32000: vortex->spdif_sr = 32000; break;
+	case IEC958_AES3_CON_FS_44100: vortex->spdif_sr = 44100; break;
+	case IEC958_AES3_CON_FS_48000: vortex->spdif_sr = 48000; break;
+	};
+	vortex_spdif_init(vortex, vortex->spdif_sr, 1);
 	return 0;
 }
-static int
-snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+
+static int snd_vortex_spdif_mask_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ucontrol->value.iec958.status[0] = 0xff;
+	ucontrol->value.iec958.status[1] = 0xff;
+	ucontrol->value.iec958.status[2] = 0xff;
+	ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
+	return 0;
+}
+
+static int snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.iec958.status[0] = 0x00;
+	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
+	ucontrol->value.iec958.status[2] = 0x00;
+	switch(vortex->spdif_sr){
+	case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
+	case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
+	case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
+	};
+	return 0;
+}
+
+static int snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 {
 	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
-	static unsigned int sr[3] = { 32000, 44100, 48000 };
+	switch(ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS){
+	case IEC958_AES3_CON_FS_32000: vortex->spdif_sr = 32000; break;
+	case IEC958_AES3_CON_FS_44100: vortex->spdif_sr = 44100; break;
+	case IEC958_AES3_CON_FS_48000: vortex->spdif_sr = 48000; break;
+	};
+	vortex_spdif_init(vortex, vortex->spdif_sr, 1);
+	return 0;
+}
 
-	//printk("vortex: spdif sr = %d\n", ucontrol->value.enumerated.item[0]);
-	vortex->spdif_sr = sr[ucontrol->value.enumerated.item[0] % 3];
-	vortex_spdif_init(vortex,
-			  sr[ucontrol->value.enumerated.item[0] % 3], 1);
-	return 1;
-}
-static snd_kcontrol_new_t vortex_spdif_kcontrol __devinitdata = {
-	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name = "SPDIF SR",
-	.index = 0,
-	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-	.private_value = 0,
-	.info = snd_vortex_spdif_info,
-	.get = snd_vortex_spdif_get,
-	.put = snd_vortex_spdif_put
+/* spdif controls */
+static snd_kcontrol_new_t snd_vortex_mixer_spdif[] __devinitdata = {
+	{
+		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+		.info =		snd_vortex_spdif_info,
+		.get =		snd_vortex_spdif_default_get,
+		.put =		snd_vortex_spdif_default_put,
+	},
+	{
+		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
+		.access =	SNDRV_CTL_ELEM_ACCESS_READ,
+		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
+		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
+		.info =		snd_vortex_spdif_info,
+		.get =		snd_vortex_spdif_mask_get
+	},
 };
 
 /* create a pcm device */
 static int __devinit snd_vortex_new_pcm(vortex_t * chip, int idx, int nr)
 {
 	snd_pcm_t *pcm;
+	snd_kcontrol_t *kctl;
+	int i;
 	int err, nr_capt;
 
 	if ((chip == 0) || (idx < 0) || (idx > VORTEX_PCM_LAST))
@@ -520,13 +559,14 @@
 					      0x10000, 0x10000);
 
 	if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
-		snd_kcontrol_t *kcontrol;
-
-		if ((kcontrol =
-		     snd_ctl_new1(&vortex_spdif_kcontrol, chip)) == NULL)
-			return -ENOMEM;
-		if ((err = snd_ctl_add(chip->card, kcontrol)) < 0)
-			return err;
+		for (i = 0; i < ARRAY_SIZE(snd_vortex_mixer_spdif); i++) {
+			kctl = snd_ctl_new1(&snd_vortex_mixer_spdif[i], chip);
+			if (! kctl)
+				return -ENOMEM;
+//			kctl->id.index = index;
+			if ((err = snd_ctl_add(chip->card, kctl)) < 0)
+				return err;
+		}
 	}
 	return 0;
 }

[Please apply patch] Re: au88x0 - Replace spdif frequency control by IEC958 control

[Manuel Jander]

Hi Raymond,

On Mon, 2005-02-21 at 15:40 +0800, Raymond wrote:
> This patch only change the existing SPDIF Frequency(32000,44100,48000) 
> control to the IEC958 control. It means that you will have to use 
> "iecset rate" instead of alsamixer to change the SPDIF frequency.

Thats great news. Thanks!

> 1) What is the difference between Consumer mode and Professional mode ?

What do you mean ?

> 2) What change will be needed in order to support the SPDIF IN/OUT of 
> Turtle Beach Montego II Quadzilla ?

Reverse engineering :P SPDIF out should work. The required audio routes
are known. But we need to know which GPIO pins evetually must be set to
enable/operate external optical transceivers.

> 3) Are there any status bit to detect the presence of the add-on SPDIF 
> daugther card of MX300 and Montego II ?

Only an ex-employee of Aureal could tell, but so far, nobody has done
given any hints about that.

> aplay can be used to play 4-channels wave (e.g. out1lq.wav,out1rq.wav, 
> out2lq.wav and out2rq.wav from the win9x driver) using the au8830 driver.
> 4) What change will be needed in /usr/share/cards/AU8830.conf to support 
> Surround40 ?

The au8830 driver supports upto 4 channels for each PCM. In total, you
can have upto 16 channels with Hardware samplerate conversion (the 64
channels of the wavetable engine still dont work) and 16 extra channels
which will not have Hardware samplerate conversion.

> The PCI SubSystem Device/Vendor ID of the sound card which can be used 
> to identify specific sound card such as Dimaond MX300, Turtle Beach 
> Montego II, SQ2500, ....can be obtained from the memory mapped I/O 
> address 0x2a804 - au8810/30, 0x13004 - au8820.

A nice discovery. Thanks.

> 5) Can any au8810/au8830 owner verify that EN_CODEC1 should/should not 
> be used for those au8810/au8830 not using a quad codec ? (e.g Montego II 
> using STAC9721 stereo codec, SQ1500, Vortex Advantage, ASUS L8400B 
> notebook au8810 with modem)
> 
> #define VORTEX_CODEC_CTRL    0x29184
> #define VORTEX_CODEC_EN        0x29190
> #define        EN_CODEC0    0x00000300
> #define     EN_AC98        0x00000c00 /* Modem AC98 slots. */
> #define        EN_CODEC1    0x00003000
> #define        EN_CODEC    (EN_CODEC0 | EN_CODEC1)

The EN_CODEC1 flag, is there to enable the AC97 channels 4 and 5. AFAIK,
the bits in that register (VORTEX_CODEC_EN) map as follows:

8,9: AC97 channels 0 and 1
10,11: AC97 channels 2 and 3 (used as AC98 modem channels)
12,13: AC97 channels 4 and 5 (rear/headphones channels)

For more details:
http://galadriel.mat.utfsm.cl/~mjander/aureal/techdoc/techpaper.html


> There is already a parser to parse the sound font au30gm.arl in the 
> vortex control panel.
> http://savannah.nongnu.org/support/?func=detailitem&item_id=103017

> 6) What else will be needed for the au88x0 driver to support wavetable 
> synthesis ?

The main problem is, that the audio routes from the WT engine are broken
and thus the DMA engine does not seem transfer any data. At the time i
was trying to fix that (August 2004), i had to sell my Desktop computer,
start working, etc (with my actual job i have barely enough time to
sleep)... I'm very interested in continuing my work, but being
realistic, thats impossible by know. By March 22th i'll be moving to
Germany, in the hope to find a job which will allow me to have at least
some spare time for such kind of stuff. And of course, buy a desktop
computer with a PCI slot :)

I'm unable to test any contributions to the aureal driver in a
reasonable time ... forget about SPDIF, since i don't have and don't
know anyone owning anything SPDIF to test with :(. Making it work, was a
lucky blind shot.
Anyhow, i would agree to apply this patch, even if it breaks things,
since thats better than a dead project. Hopefuly it will spawn comments,
bug reports, patches etc from other people using this hardware.

Thank you very much for your great contribution.

Best Regards

Manuel Jander

> plain text document attachment (au88x0_iec958.patch)
> diff -Naur alsa-driver-1.0.8/alsa-kernel/pci/au88x0_orig/au88x0_pcm.c alsa-driver-1.0.8/alsa-kernel/pci/au88x0/au88x0_pcm.c
> --- alsa-driver-1.0.8/alsa-kernel/pci/au88x0_orig/au88x0_pcm.c	2005-01-03 20:08:24.000000000 +0800
> +++ alsa-driver-1.0.8/alsa-kernel/pci/au88x0/au88x0_pcm.c	2005-02-19 12:02:11.000000000 +0800
> @@ -20,7 +20,7 @@
>   * Supports ADB and WT DMA. Unfortunately, WT channels do not run yet.
>   * It remains stuck,and DMA transfers do not happen. 
>   */
> -
> +#include <sound/asoundef.h>
>  #include <sound/driver.h>
>  #include <linux/time.h>
>  #include <sound/core.h>
> @@ -431,61 +431,100 @@
>  };
>  
>  /* SPDIF kcontrol */
> -static int
> -snd_vortex_spdif_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
> -{
> -	static char *texts[] = { "32000", "44100", "48000" };
>  
> -	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
> +static int snd_vortex_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
> +{
> +	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
>  	uinfo->count = 1;
> -	uinfo->value.enumerated.items = 3;
> -	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
> -		uinfo->value.enumerated.item =
> -		    uinfo->value.enumerated.items - 1;
> -	strcpy(uinfo->value.enumerated.name,
> -	       texts[uinfo->value.enumerated.item]);
>  	return 0;
>  }
> -static int
> -snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
> +
> +static int snd_vortex_spdif_default_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
>  {
>  	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
> +	ucontrol->value.iec958.status[0] = 0x00;
> +	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
> +	ucontrol->value.iec958.status[2] = 0x00;
> +	switch(vortex->spdif_sr){
> +	case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
> +	case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
> +	case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
> +	};
> +	return 0;
> +}
>  
> -	if (vortex->spdif_sr == 32000)
> -		ucontrol->value.enumerated.item[0] = 0;
> -	if (vortex->spdif_sr == 44100)
> -		ucontrol->value.enumerated.item[0] = 1;
> -	if (vortex->spdif_sr == 48000)
> -		ucontrol->value.enumerated.item[0] = 2;
> +static int snd_vortex_spdif_default_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
> +{
> +	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
> +	switch(ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS){
> +	case IEC958_AES3_CON_FS_32000: vortex->spdif_sr = 32000; break;
> +	case IEC958_AES3_CON_FS_44100: vortex->spdif_sr = 44100; break;
> +	case IEC958_AES3_CON_FS_48000: vortex->spdif_sr = 48000; break;
> +	};
> +	vortex_spdif_init(vortex, vortex->spdif_sr, 1);
>  	return 0;
>  }
> -static int
> -snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
> +
> +static int snd_vortex_spdif_mask_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
> +{
> +	ucontrol->value.iec958.status[0] = 0xff;
> +	ucontrol->value.iec958.status[1] = 0xff;
> +	ucontrol->value.iec958.status[2] = 0xff;
> +	ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
> +	return 0;
> +}
> +
> +static int snd_vortex_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
> +{
> +	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
> +	ucontrol->value.iec958.status[0] = 0x00;
> +	ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
> +	ucontrol->value.iec958.status[2] = 0x00;
> +	switch(vortex->spdif_sr){
> +	case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
> +	case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
> +	case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
> +	};
> +	return 0;
> +}
> +
> +static int snd_vortex_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
>  {
>  	vortex_t *vortex = snd_kcontrol_chip(kcontrol);
> -	static unsigned int sr[3] = { 32000, 44100, 48000 };
> +	switch(ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS){
> +	case IEC958_AES3_CON_FS_32000: vortex->spdif_sr = 32000; break;
> +	case IEC958_AES3_CON_FS_44100: vortex->spdif_sr = 44100; break;
> +	case IEC958_AES3_CON_FS_48000: vortex->spdif_sr = 48000; break;
> +	};
> +	vortex_spdif_init(vortex, vortex->spdif_sr, 1);
> +	return 0;
> +}
>  
> -	//printk("vortex: spdif sr = %d\n", ucontrol->value.enumerated.item[0]);
> -	vortex->spdif_sr = sr[ucontrol->value.enumerated.item[0] % 3];
> -	vortex_spdif_init(vortex,
> -			  sr[ucontrol->value.enumerated.item[0] % 3], 1);
> -	return 1;
> -}
> -static snd_kcontrol_new_t vortex_spdif_kcontrol __devinitdata = {
> -	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
> -	.name = "SPDIF SR",
> -	.index = 0,
> -	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
> -	.private_value = 0,
> -	.info = snd_vortex_spdif_info,
> -	.get = snd_vortex_spdif_get,
> -	.put = snd_vortex_spdif_put
> +/* spdif controls */
> +static snd_kcontrol_new_t snd_vortex_mixer_spdif[] __devinitdata = {
> +	{
> +		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
> +		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
> +		.info =		snd_vortex_spdif_info,
> +		.get =		snd_vortex_spdif_default_get,
> +		.put =		snd_vortex_spdif_default_put,
> +	},
> +	{
> +		.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
> +		.access =	SNDRV_CTL_ELEM_ACCESS_READ,
> +		.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
> +		.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
> +		.info =		snd_vortex_spdif_info,
> +		.get =		snd_vortex_spdif_mask_get
> +	},
>  };
>  
>  /* create a pcm device */
>  static int __devinit snd_vortex_new_pcm(vortex_t * chip, int idx, int nr)
>  {
>  	snd_pcm_t *pcm;
> +	snd_kcontrol_t *kctl;
> +	int i;
>  	int err, nr_capt;
>  
>  	if ((chip == 0) || (idx < 0) || (idx > VORTEX_PCM_LAST))
> @@ -520,13 +559,14 @@
>  					      0x10000, 0x10000);
>  
>  	if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
> -		snd_kcontrol_t *kcontrol;
> -
> -		if ((kcontrol =
> -		     snd_ctl_new1(&vortex_spdif_kcontrol, chip)) == NULL)
> -			return -ENOMEM;
> -		if ((err = snd_ctl_add(chip->card, kcontrol)) < 0)
> -			return err;
> +		for (i = 0; i < ARRAY_SIZE(snd_vortex_mixer_spdif); i++) {
> +			kctl = snd_ctl_new1(&snd_vortex_mixer_spdif[i], chip);
> +			if (! kctl)
> +				return -ENOMEM;
> +//			kctl->id.index = index;
> +			if ((err = snd_ctl_add(chip->card, kctl)) < 0)
> +				return err;
> +		}
>  	}
>  	return 0;
>  }
-- 
Manuel Jander
Electronic Engineer



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[Please apply patch] Re: au88x0 - Replace spdif frequency control by IEC958 control

[Clemens Ladisch]

Raymond wrote:
> 1) What is the difference between Consumer mode and Professional mode ?

A different set of status bits.  See, for example, ALSA's asoundef.h,
but it doesn't have many explanations.

The main difference is that only consumer mode has the copyright bit
so that devices can automatically disable copying.


HTH
Clemens



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Re: [Openvortex-dev] au88x0 - Replace spdif frequency control by IEC958 control

[Jeff Muizelaar]

On Mon, Feb 21, 2005 at 03:40:33PM +0800, Raymond wrote:
> 5) Can any au8810/au8830 owner verify that EN_CODEC1 should/should not 
> be used for those au8810/au8830 not using a quad codec ? (e.g Montego II 
> using STAC9721 stereo codec, SQ1500, Vortex Advantage, ASUS L8400B 
> notebook au8810 with modem)

I can probably look at this when I get the chance.
I'll also take a closer look at your patch...

-Jeff


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