From d4b06d23ab1c5aefbb1377fb01939b555236f57f Mon Sep 17 00:00:00 2001 From: Eliot Blennerhassett Date: Thu, 22 Dec 2011 13:38:34 +1300 Subject: [PATCH] ALSA: asihpi - Volumes and meters may have 1 or 2 channels. The channel count can be queried to determine which. Signed-off-by: Eliot Blennerhassett Signed-off-by: Takashi Iwai --- sound/pci/asihpi/asihpi.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 44e6ef3e99cc..6e89e5b83a49 100644 --- a/sound/pci/asihpi/asihpi.c +++ b/sound/pci/asihpi/asihpi.c @@ -1410,6 +1410,7 @@ static int snd_asihpi_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { u32 h_control = kcontrol->private_value; + u32 count; u16 err; /* native gains are in millibels */ short min_gain_mB; @@ -1424,8 +1425,12 @@ static int snd_asihpi_volume_info(struct snd_kcontrol *kcontrol, step_gain_mB = VOL_STEP_mB; } + err = hpi_meter_query_channels(h_control, &count); + if (err) + count = HPI_MAX_CHANNELS; + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 2; + uinfo->count = count; uinfo->value.integer.min = min_gain_mB / VOL_STEP_mB; uinfo->value.integer.max = max_gain_mB / VOL_STEP_mB; uinfo->value.integer.step = step_gain_mB / VOL_STEP_mB; @@ -2033,8 +2038,15 @@ static int __devinit snd_asihpi_tuner_add(struct snd_card_asihpi *asihpi, static int snd_asihpi_meter_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { + u32 h_control = kcontrol->private_value; + u32 count; + u16 err; + err = hpi_meter_query_channels(h_control, &count); + if (err) + count = HPI_MAX_CHANNELS; + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = HPI_MAX_CHANNELS; + uinfo->count = count; uinfo->value.integer.min = 0; uinfo->value.integer.max = 0x7FFFFFFF; return 0; -- GitLab