Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ea7cfcdfe6439cd98816da9d339a6bc9032d2084
Commit: ea7cfcdfe6439cd98816da9d339a6bc9032d2084
Parent: 959047431a9e65f6ae25705e77a8e460a1aa04c0
Author: Pavel Hofman <[EMAIL PROTECTED]>
AuthorDate: Sat May 19 17:21:04 2007 +0200
Committer: Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Fri Jul 20 11:11:18 2007 +0200
[ALSA] ice1724 - Add PCM Playback Switch to Revo 7.1
This patch adds the support of mute for front channels of M-Audio
Revolution 7.1 (the DAC AK4381 features a mute bit).
Signed-off-by: Pavel Hofman <[EMAIL PROTECTED]>
Signed-off-by: Takashi Iwai <[EMAIL PROTECTED]>
Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
include/sound/ak4xxx-adda.h | 1 +
sound/i2c/other/ak4xxx-adda.c | 24 ++++++++++++++++++++++--
sound/pci/ice1712/revo.c | 7 ++++++-
3 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/include/sound/ak4xxx-adda.h b/include/sound/ak4xxx-adda.h
index aa49dda..fd0a6c4 100644
--- a/include/sound/ak4xxx-adda.h
+++ b/include/sound/ak4xxx-adda.h
@@ -43,6 +43,7 @@ struct snd_ak4xxx_ops {
struct snd_akm4xxx_dac_channel {
char *name; /* mixer volume name */
unsigned int num_channels;
+ char *switch_name; /* mixer switch*/
};
/* ADC labels and channels */
diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c
index 8805110..fd33515 100644
--- a/sound/i2c/other/ak4xxx-adda.c
+++ b/sound/i2c/other/ak4xxx-adda.c
@@ -481,8 +481,8 @@ static int ak4xxx_switch_get(struct snd_kcontrol *kcontrol,
int addr = AK_GET_ADDR(kcontrol->private_value);
int shift = AK_GET_SHIFT(kcontrol->private_value);
int invert = AK_GET_INVERT(kcontrol->private_value);
- unsigned char val = snd_akm4xxx_get(ak, chip, addr);
-
+ /* we observe the (1<<shift) bit only */
+ unsigned char val = snd_akm4xxx_get(ak, chip, addr) & (1<<shift);
if (invert)
val = ! val;
ucontrol->value.integer.value[0] = (val & (1<<shift)) != 0;
@@ -585,6 +585,26 @@ static int build_dac_controls(struct snd_akm4xxx *ak)
mixer_ch = 0;
for (idx = 0; idx < ak->num_dacs; ) {
+ /* mute control for Revolution 7.1 - AK4381 */
+ if (ak->type == SND_AK4381
+ && ak->dac_info[mixer_ch].switch_name) {
+ memset(&knew, 0, sizeof(knew));
+ knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ knew.count = 1;
+ knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ knew.name = ak->dac_info[mixer_ch].switch_name;
+ knew.info = ak4xxx_switch_info;
+ knew.get = ak4xxx_switch_get;
+ knew.put = ak4xxx_switch_put;
+ knew.access = 0;
+ /* register 1, bit 0 (SMUTE): 0 = normal operation,
+ 1 = mute */
+ knew.private_value =
+ AK_COMPOSE(idx/2, 1, 0, 0) | AK_INVERT;
+ err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
+ if (err < 0)
+ return err;
+ }
memset(&knew, 0, sizeof(knew));
if (! ak->dac_info || ! ak->dac_info[mixer_ch].name) {
knew.name = "DAC Volume";
diff --git a/sound/pci/ice1712/revo.c b/sound/pci/ice1712/revo.c
index 690ceb3..d18a31e 100644
--- a/sound/pci/ice1712/revo.c
+++ b/sound/pci/ice1712/revo.c
@@ -186,7 +186,12 @@ static int revo51_i2c_init(struct snd_ice1712 *ice,
#define AK_DAC(xname,xch) { .name = xname, .num_channels = xch }
static const struct snd_akm4xxx_dac_channel revo71_front[] = {
- AK_DAC("PCM Playback Volume", 2)
+ {
+ .name = "PCM Playback Volume",
+ .num_channels = 2,
+ /* front channels DAC supports muting */
+ .switch_name = "PCM Playback Switch",
+ },
};
static const struct snd_akm4xxx_dac_channel revo71_surround[] = {
-
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