Hello Takashi,
On Tue, Aug 08, 2006 at 07:30:44PM +0200, Takashi Iwai wrote:
> > Is the last argument (mask) for AK_COMPOSE the maximum allowed mixer
> > value? Is it ok if this is not a power of two?
>
> Yes and yes.
Fine. Slowly I am getting there. Now I have something working,
which uses the following addition to snd_akm4xxx_build_controls:
if (ak->type == SND_AK5365) {
memset(ctl, 0, sizeof(*ctl));
if (ak->channel_names == NULL) {
strcpy(ctl->id.name, "ADC Volume");
} else {
strcpy(ctl->id.name, ak->channel_names[0]);
}
ctl->id.index = ak->idx_offset * 2;
ctl->id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
ctl->count = 1;
ctl->info = snd_akm4xxx_stereo_volume_info;
ctl->get = snd_akm4xxx_stereo_volume_get;
ctl->put = snd_akm4xxx_stereo_volume_put;
/* register 4 & 5 */
ctl->private_value =
AK_COMPOSE(0, 4, 0, 0x98);
ctl->private_data = ak;
err = snd_ctl_add(ak->card,
snd_ctl_new(ctl, SNDRV_CTL_ELEM_ACCESS_READ|
SNDRV_CTL_ELEM_ACCESS_WRITE));
if (err < 0)
goto __error;
idx += 2; /* always stereo */
}
(I will post a complete patch later today.)
This gives me a beautiful (and working!) volume slider for the capture
channel. Does this look ok to you? The magic constant 0x98 is from
page 35 of the spec and I think is correct. I did not imitate the
loop over idx which other parts of this function have. I hope that
this is ok.
The card seems to have a separate mute control. How do I create a
mixer element for this? I would like alsamixer to place a little mute
box just under the slider bar. I looked around, but could not find
anything similar to copy within the ice1723 directory.
Many thanks for your help,
Jochen
--
http://seehuhn.de/
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