Add capture source selection for the M-Audio Revolution 5.1.
The AK5365 ADC, used for the Revolution 5.1 card, allows to choose
between different input sources. This patch adds a new mixer element
to support this.
Signed-off-by: Jochen Voss <voss@xxxxxxxxxx>
---
This addresses the first item in my recent "M-Audio Revolution 5.1 -
new hardware information" email. Comments are very welcome.
Especially I am not sure whether I feed the list of mixer channel
names into 'ak4xxx_capture_source_info' the right way.
I tested the patch and it works for me.
diff -ur alsa-driver-hg20060929.orig/alsa-kernel/i2c/other/ak4xxx-adda.c alsa-driver-hg20060929/alsa-kernel/i2c/other/ak4xxx-adda.c
--- alsa-driver-hg20060929.orig/alsa-kernel/i2c/other/ak4xxx-adda.c 2006-09-09 01:00:11.000000000 +0100
+++ alsa-driver-hg20060929/alsa-kernel/i2c/other/ak4xxx-adda.c 2006-09-30 20:06:33.896394618 +0100
@@ -513,6 +513,62 @@
return change;
}
+static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+ const char **input_names;
+ int num_names, idx;
+
+ input_names = ak->adc_info[0].input_names;
+
+ num_names = 0;
+ while (num_names<8 && input_names[num_names])
+ ++num_names;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = num_names;
+ idx = uinfo->value.enumerated.item;
+ if (idx >= num_names)
+ idx = num_names - 1;
+ strncpy(uinfo->value.enumerated.name, input_names[idx], 64);
+ return 0;
+}
+
+static int ak4xxx_capture_source_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+ int chip = AK_GET_CHIP(kcontrol->private_value);
+ int addr = AK_GET_ADDR(kcontrol->private_value);
+ int shift = AK_GET_SHIFT(kcontrol->private_value);
+ int mask = AK_GET_MASK(kcontrol->private_value);
+ unsigned char val;
+
+ val = (snd_akm4xxx_get(ak, chip, addr)&mask) >> shift;
+ ucontrol->value.enumerated.item[0] = val;
+ return 0;
+}
+
+static int ak4xxx_capture_source_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+ int chip = AK_GET_CHIP(kcontrol->private_value);
+ int addr = AK_GET_ADDR(kcontrol->private_value);
+ int shift = AK_GET_SHIFT(kcontrol->private_value);
+ int mask = AK_GET_MASK(kcontrol->private_value);
+ unsigned char oval, val;
+
+ oval = snd_akm4xxx_get(ak, chip, addr);
+ val = oval & ~mask;
+ val |= (ucontrol->value.enumerated.item[0] << shift)&mask;
+ if (val != oval)
+ snd_akm4xxx_write(ak, chip, addr, val);
+ return 0;
+}
+
/*
* build AK4xxx controls
*/
@@ -662,6 +718,24 @@
err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
if (err < 0)
return err;
+
+ memset(&knew, 0, sizeof(knew));
+ knew.name = ak->adc_info[mixer_ch].selector_name;
+ if (! knew.name)
+ knew.name = "Capture Source Select";
+
+ knew.index = mixer_ch;
+ knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ knew.info = ak4xxx_capture_source_info;
+ knew.get = ak4xxx_capture_source_get;
+ knew.put = ak4xxx_capture_source_put;
+ knew.access = 0;
+ /* input selector control: reg. 1, bits 0-2 */
+ knew.private_value
+ = AK_COMPOSE(idx/2, 1, 0, 0x07);
+ err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
+ if (err < 0)
+ return err;
}
idx += num_stereo;
diff -ur alsa-driver-hg20060929.orig/alsa-kernel/include/ak4xxx-adda.h alsa-driver-hg20060929/alsa-kernel/include/ak4xxx-adda.h
--- alsa-driver-hg20060929.orig/alsa-kernel/include/ak4xxx-adda.h 2006-09-09 01:00:11.000000000 +0100
+++ alsa-driver-hg20060929/alsa-kernel/include/ak4xxx-adda.h 2006-09-30 20:04:16.412394092 +0100
@@ -50,6 +50,8 @@
char *name; /* capture gain volume label */
char *switch_name; /* capture switch */
unsigned int num_channels;
+ char *selector_name; /* capture source select label */
+ const char **input_names; /* capture source names (NULL terminated) */
};
struct snd_akm4xxx {
diff -ur alsa-driver-hg20060929.orig/alsa-kernel/pci/ice1712/revo.c alsa-driver-hg20060929/alsa-kernel/pci/ice1712/revo.c
--- alsa-driver-hg20060929.orig/alsa-kernel/pci/ice1712/revo.c 2006-09-09 01:00:11.000000000 +0100
+++ alsa-driver-hg20060929/alsa-kernel/pci/ice1712/revo.c 2006-09-30 20:07:50.121335700 +0100
@@ -107,11 +107,19 @@
AK_DAC("PCM Rear Playback Volume", 2),
};
+const char *revo51_adc_input_names[] = {
+ "Mic",
+ "Line",
+ "CD",
+ NULL
+};
+
static struct snd_akm4xxx_adc_channel revo51_adc[] = {
{
.name = "PCM Capture Volume",
.switch_name = "PCM Capture Switch",
- .num_channels = 2
+ .num_channels = 2,
+ .input_names = revo51_adc_input_names
},
};
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