From 288673beae6cbd8198be94284adbaeb5cba7dbda Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 18 Nov 2014 18:06:17 +0100 Subject: [PATCH] ALSA: usb-audio: Add resume support for MicroII SPDIF ctls Like the previous fixes, the mixer accessors are converted to use usb_mixer_elem_list objects. In addition, the proper shutdown check are put in get and put callbacks. Signed-off-by: Takashi Iwai --- sound/usb/mixer_quirks.c | 135 +++++++++++++++++++++++++++------------ 1 file changed, 93 insertions(+), 42 deletions(-) diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index fcb7ae5131a9..dc9df007d3e3 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -1509,7 +1509,8 @@ static int snd_microii_spdif_info(struct snd_kcontrol *kcontrol, static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); + struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol); + struct snd_usb_audio *chip = list->mixer->chip; int err; struct usb_interface *iface; struct usb_host_interface *alts; @@ -1517,17 +1518,23 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol, unsigned char data[3]; int rate; + down_read(&chip->shutdown_rwsem); + if (chip->shutdown) { + err = -ENODEV; + goto end; + } + ucontrol->value.iec958.status[0] = kcontrol->private_value & 0xff; ucontrol->value.iec958.status[1] = (kcontrol->private_value >> 8) & 0xff; ucontrol->value.iec958.status[2] = 0x00; /* use known values for that card: interface#1 altsetting#1 */ - iface = usb_ifnum_to_if(mixer->chip->dev, 1); + iface = usb_ifnum_to_if(chip->dev, 1); alts = &iface->altsetting[1]; ep = get_endpoint(alts, 0)->bEndpointAddress; - err = snd_usb_ctl_msg(mixer->chip->dev, - usb_rcvctrlpipe(mixer->chip->dev, 0), + err = snd_usb_ctl_msg(chip->dev, + usb_rcvctrlpipe(chip->dev, 0), UAC_GET_CUR, USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_IN, UAC_EP_CS_ATTR_SAMPLE_RATE << 8, @@ -1542,22 +1549,27 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol, IEC958_AES3_CON_FS_48000 : IEC958_AES3_CON_FS_44100; err = 0; -end: + end: + up_read(&chip->shutdown_rwsem); return err; } -static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) +static int snd_microii_spdif_default_update(struct usb_mixer_elem_list *list) { - struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); - int err; + struct snd_usb_audio *chip = list->mixer->chip; + unsigned int pval = list->kctl->private_value; u8 reg; - unsigned long priv_backup = kcontrol->private_value; + int err; - reg = ((ucontrol->value.iec958.status[1] & 0x0f) << 4) | - (ucontrol->value.iec958.status[0] & 0x0f); - err = snd_usb_ctl_msg(mixer->chip->dev, - usb_sndctrlpipe(mixer->chip->dev, 0), + down_read(&chip->shutdown_rwsem); + if (chip->shutdown) { + err = -ENODEV; + goto end; + } + + reg = ((pval >> 4) & 0xf0) | (pval & 0x0f); + err = snd_usb_ctl_msg(chip->dev, + usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, reg, @@ -1567,15 +1579,10 @@ static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol, if (err < 0) goto end; - kcontrol->private_value &= 0xfffff0f0; - kcontrol->private_value |= (ucontrol->value.iec958.status[1] & 0x0f) << 8; - kcontrol->private_value |= (ucontrol->value.iec958.status[0] & 0x0f); - - reg = (ucontrol->value.iec958.status[0] & IEC958_AES0_NONAUDIO) ? - 0xa0 : 0x20; - reg |= (ucontrol->value.iec958.status[1] >> 4) & 0x0f; - err = snd_usb_ctl_msg(mixer->chip->dev, - usb_sndctrlpipe(mixer->chip->dev, 0), + reg = (pval & IEC958_AES0_NONAUDIO) ? 0xa0 : 0x20; + reg |= (pval >> 12) & 0x0f; + err = snd_usb_ctl_msg(chip->dev, + usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, reg, @@ -1585,16 +1592,36 @@ static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol, if (err < 0) goto end; - kcontrol->private_value &= 0xffff0fff; - kcontrol->private_value |= (ucontrol->value.iec958.status[1] & 0xf0) << 8; + end: + up_read(&chip->shutdown_rwsem); + return err; +} + +static int snd_microii_spdif_default_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol); + unsigned int pval, pval_old; + int err; + + pval = pval_old = kcontrol->private_value; + pval &= 0xfffff0f0; + pval |= (ucontrol->value.iec958.status[1] & 0x0f) << 8; + pval |= (ucontrol->value.iec958.status[0] & 0x0f); + + pval &= 0xffff0fff; + pval |= (ucontrol->value.iec958.status[1] & 0xf0) << 8; /* The frequency bits in AES3 cannot be set via register access. */ /* Silently ignore any bits from the request that cannot be set. */ - err = (priv_backup != kcontrol->private_value); -end: - return err; + if (pval == pval_old) + return 0; + + kcontrol->private_value = pval; + err = snd_microii_spdif_default_update(list); + return err < 0 ? err : 1; } static int snd_microii_spdif_mask_get(struct snd_kcontrol *kcontrol, @@ -1616,15 +1643,20 @@ static int snd_microii_spdif_switch_get(struct snd_kcontrol *kcontrol, return 0; } -static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) +static int snd_microii_spdif_switch_update(struct usb_mixer_elem_list *list) { - struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); + struct snd_usb_audio *chip = list->mixer->chip; + u8 reg = list->kctl->private_value; int err; - u8 reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a; - err = snd_usb_ctl_msg(mixer->chip->dev, - usb_sndctrlpipe(mixer->chip->dev, 0), + down_read(&chip->shutdown_rwsem); + if (chip->shutdown) { + err = -ENODEV; + goto end; + } + + err = snd_usb_ctl_msg(chip->dev, + usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, reg, @@ -1632,15 +1664,27 @@ static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol, NULL, 0); - if (!err) { - err = (reg != (kcontrol->private_value & 0x0ff)); - if (err) - kcontrol->private_value = reg; - } - + end: + up_read(&chip->shutdown_rwsem); return err; } +static int snd_microii_spdif_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol); + u8 reg; + int err; + + reg = ucontrol->value.integer.value[0] ? 0x28 : 0x2a; + if (reg != list->kctl->private_value) + return 0; + + kcontrol->private_value = reg; + err = snd_microii_spdif_switch_update(list); + return err < 0 ? err : 1; +} + static struct snd_kcontrol_new snd_microii_mixer_spdif[] = { { .iface = SNDRV_CTL_ELEM_IFACE_PCM, @@ -1670,10 +1714,17 @@ static struct snd_kcontrol_new snd_microii_mixer_spdif[] = { static int snd_microii_controls_create(struct usb_mixer_interface *mixer) { int err, i; + static usb_mixer_elem_resume_func_t resume_funcs[] = { + snd_microii_spdif_default_update, + NULL, + snd_microii_spdif_switch_update + }; for (i = 0; i < ARRAY_SIZE(snd_microii_mixer_spdif); ++i) { - err = snd_ctl_add(mixer->chip->card, - snd_ctl_new1(&snd_microii_mixer_spdif[i], mixer)); + err = add_single_ctl_with_resume(mixer, 0, + resume_funcs[i], + &snd_microii_mixer_spdif[i], + NULL); if (err < 0) return err; }