From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasily Khoruzhick Subject: [PATCH v3] ALSA: usb-audio: add front jack channel selector for EMU0204 Date: Wed, 13 Nov 2013 13:13:35 +0300 Message-ID: <1384337615-7335-1-git-send-email-anarsoul@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ee0-f44.google.com (mail-ee0-f44.google.com [74.125.83.44]) by alsa0.perex.cz (Postfix) with ESMTP id 145FD260864 for ; Wed, 13 Nov 2013 11:14:42 +0100 (CET) Received: by mail-ee0-f44.google.com with SMTP id d51so101908eek.17 for ; Wed, 13 Nov 2013 02:14:41 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Takashi Iwai , Jaroslav Kysela , alsa-devel@alsa-project.org, Yury Bushmelev Cc: Vasily Khoruzhick List-Id: alsa-devel@alsa-project.org Add support for front jack channel selector which is present on EMU0204. It allows to get 4 channels out of this soundcard. Tested-by: Yury Bushmelev Signed-off-by: Vasily Khoruzhick --- v2: - pass constants for bRequest and bRequestType into snd_usb_ctl_msg() - implement control as an enum instead of a switch. v3: - Fix declared array size - Add sanity check for a passed value to snd_emu0204_ch_switch_put() sound/usb/mixer_quirks.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index d42a584..3454262 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -433,6 +433,89 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry, } } +/* EMU0204 */ +static int snd_emu0204_ch_switch_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + static const char *texts[2] = {"1/2", + "3/4" + }; + + uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; + uinfo->count = 1; + uinfo->value.enumerated.items = 2; + if (uinfo->value.enumerated.item > 1) + uinfo->value.enumerated.item = 1; + strcpy(uinfo->value.enumerated.name, + texts[uinfo->value.enumerated.item]); + + return 0; +} + +static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = kcontrol->private_value; + return 0; +} + +static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); + unsigned int value = ucontrol->value.enumerated.item[0]; + int err, changed; + unsigned char buf[2]; + + if (value > 1) + return -EINVAL; + + buf[0] = 0x01; + buf[1] = value ? 0x02 : 0x01; + + changed = value != kcontrol->private_value; + down_read(&mixer->chip->shutdown_rwsem); + if (mixer->chip->shutdown) { + err = -ENODEV; + goto out; + } + err = snd_usb_ctl_msg(mixer->chip->dev, + usb_sndctrlpipe(mixer->chip->dev, 0), UAC_SET_CUR, + USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, + 0x0400, 0x0e00, buf, 2); + out: + up_read(&mixer->chip->shutdown_rwsem); + if (err < 0) + return err; + kcontrol->private_value = value; + return changed; +} + + +static struct snd_kcontrol_new snd_emu0204_controls[] = { + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Front Jack Channels", + .info = snd_emu0204_ch_switch_info, + .get = snd_emu0204_ch_switch_get, + .put = snd_emu0204_ch_switch_put, + .private_value = 0, + }, +}; + +static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer) +{ + int i, err; + + for (i = 0; i < ARRAY_SIZE(snd_emu0204_controls); ++i) { + err = snd_ctl_add(mixer->chip->card, + snd_ctl_new1(&snd_emu0204_controls[i], mixer)); + if (err < 0) + return err; + } + + return 0; +} /* ASUS Xonar U1 / U3 controls */ static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol, @@ -1545,6 +1628,13 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer) snd_audigy2nx_proc_read); break; + /* EMU0204 */ + case USB_ID(0x041e, 0x3f19): + err = snd_emu0204_controls_create(mixer); + if (err < 0) + break; + break; + case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C400 */ err = snd_c400_create_mixer(mixer); -- 1.8.4.2