This change: http://git.alsa-project.org/?p=alsa-kernel.git;a=blobdiff;f=sound/pci/echoau... broke the Mia driver because it removed the line-out control interface from all vmixer cards. But the Mia has that (undocumented!!) control and after the change it is impossible to raise the volume. I tested the driver with my IndigoIOx that was supposed to have the same set of controls... sorry. I hope it's not too late to merge this patch in linux-2.6.32.

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Re-enable the line-out control for the Mia card.

Signed-off-by: Giuliano Pochini pochini@shiny.it

diff -u alsa-driver-1.0.21/alsa-kernel/pci/echoaudio__orig/echoaudio.c alsa-driver-1.0.21/alsa-kernel/pci/echoaudio/echoaudio.c --- alsa-driver-1.0.21/alsa-kernel/pci/echoaudio__orig/echoaudio.c 2009-08-28 13:41:39.000000000 +0200 +++ alsa-driver-1.0.21/alsa-kernel/pci/echoaudio/echoaudio.c 2009-09-29 21:55:48.000000000 +0200 @@ -950,7 +950,7 @@ Control interface ******************************************************************************/

-#ifndef ECHOCARD_HAS_VMIXER +#if !defined(ECHOCARD_HAS_VMIXER) || defined(ECHOCARD_HAS_LINE_OUT_GAIN)

/******************* PCM output volume *******************/ static int snd_echo_output_gain_info(struct snd_kcontrol *kcontrol, @@ -1003,6 +1003,19 @@ return changed; }

+#ifdef ECHOCARD_HAS_LINE_OUT_GAIN +/* On the Mia this one controls the line-out volume */ +static struct snd_kcontrol_new snd_echo_line_output_gain __devinitdata = { + .name = "Line Playback Volume", + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | + SNDRV_CTL_ELEM_ACCESS_TLV_READ, + .info = snd_echo_output_gain_info, + .get = snd_echo_output_gain_get, + .put = snd_echo_output_gain_put, + .tlv = {.p = db_scale_output_gain}, +}; +#else static struct snd_kcontrol_new snd_echo_pcm_output_gain __devinitdata = { .name = "PCM Playback Volume", .iface = SNDRV_CTL_ELEM_IFACE_MIXER, @@ -1012,9 +1025,10 @@ .put = snd_echo_output_gain_put, .tlv = {.p = db_scale_output_gain}, }; - #endif

+#endif /* !ECHOCARD_HAS_VMIXER || ECHOCARD_HAS_LINE_OUT_GAIN */ +

#ifdef ECHOCARD_HAS_INPUT_GAIN @@ -2030,10 +2044,14 @@ snd_echo_vmixer.count = num_pipes_out(chip) * num_busses_out(chip); if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_vmixer, chip))) < 0) goto ctl_error; -#else - if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_pcm_output_gain, chip))) < 0) +#ifdef ECHOCARD_HAS_LINE_OUT_GAIN + if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_output_gain, chip))) < 0) goto ctl_error; #endif +#else /* ECHOCARD_HAS_VMIXER */ + if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_pcm_output_gain, chip))) < 0) + goto ctl_error; +#endif /* ECHOCARD_HAS_VMIXER */

#ifdef ECHOCARD_HAS_INPUT_GAIN if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_echo_line_input_gain, chip))) < 0) diff -u alsa-driver-1.0.21/alsa-kernel/pci/echoaudio__orig/mia.c alsa-driver-1.0.21/alsa-kernel/pci/echoaudio/mia.c --- alsa-driver-1.0.21/alsa-kernel/pci/echoaudio__orig/mia.c 2009-08-28 13:41:39.000000000 +0200 +++ alsa-driver-1.0.21/alsa-kernel/pci/echoaudio/mia.c 2009-09-29 21:55:48.000000000 +0200 @@ -29,6 +29,7 @@ #define ECHOCARD_HAS_ADAT FALSE #define ECHOCARD_HAS_STEREO_BIG_ENDIAN32 #define ECHOCARD_HAS_MIDI +#define ECHOCARD_HAS_LINE_OUT_GAIN

/* Pipe indexes */ #define PX_ANALOG_OUT 0 /* 8 */

-- Giuliano.