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author | 2010-03-04 19:46:17 +0100 | |
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committer | 2010-03-05 08:19:17 +0100 | |
commit | 767d75ad1c08c31646498a13837a5c59db90ccad (patch) | |
tree | 2f9196d65f63e7da72904f98a46039946e575401 | |
parent | ALSA: usb-audio: support multiple formats with audio class v2 devices (diff) | |
download | linux-767d75ad1c08c31646498a13837a5c59db90ccad.tar.gz linux-767d75ad1c08c31646498a13837a5c59db90ccad.tar.bz2 linux-767d75ad1c08c31646498a13837a5c59db90ccad.zip |
ALSA: usb-audio: add support for samplerate setting on v2 devices
Sample rate setting is done with a 4-byte long class request that
addresses the interface.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r-- | sound/usb/endpoint.c | 4 | ||||
-rw-r--r-- | sound/usb/pcm.c | 173 | ||||
-rw-r--r-- | sound/usb/pcm.h | 4 | ||||
-rw-r--r-- | sound/usb/quirks.c | 4 |
4 files changed, 133 insertions, 52 deletions
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index d65235c0106a..91850f84cad6 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -350,8 +350,8 @@ int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) } /* try to set the interface... */ usb_set_interface(chip->dev, iface_no, altno); - snd_usb_init_pitch(chip->dev, iface_no, alts, fp); - snd_usb_init_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max); + snd_usb_init_pitch(chip, iface_no, alts, fp); + snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max); } return 0; } diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index bd0f84f3a9d2..e0f3f87f99a0 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -107,69 +107,150 @@ static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned return found; } +static int init_pitch_v1(struct snd_usb_audio *chip, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt) +{ + struct usb_device *dev = chip->dev; + unsigned int ep; + unsigned char data[1]; + int err; + + ep = get_endpoint(alts, 0)->bEndpointAddress; + + /* if endpoint doesn't have pitch control, bail out */ + if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) + return 0; + + data[0] = 1; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, + UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", + dev->devnum, iface, ep); + return err; + } + + return 0; +} /* * initialize the picth control and sample rate */ -int snd_usb_init_pitch(struct usb_device *dev, int iface, +int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, struct audioformat *fmt) { + struct usb_interface_descriptor *altsd = get_iface_desc(alts); + + switch (altsd->bInterfaceProtocol) { + case UAC_VERSION_1: + return init_pitch_v1(chip, iface, alts, fmt); + + case UAC_VERSION_2: + /* not implemented yet */ + return 0; + } + + return -EINVAL; +} + +static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt, int rate) +{ + struct usb_device *dev = chip->dev; unsigned int ep; - unsigned char data[1]; - int err; + unsigned char data[3]; + int err, crate; ep = get_endpoint(alts, 0)->bEndpointAddress; - /* if endpoint has pitch control, enable it */ - if (fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL) { - data[0] = 1; - if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, - UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", - dev->devnum, iface, ep); - return err; - } + /* if endpoint doesn't have sampling rate control, bail out */ + if (!(fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE)) { + snd_printk(KERN_WARNING "%d:%d:%d: endpoint lacks sample rate attribute bit, cannot set.\n", + dev->devnum, iface, fmt->altsetting); + return 0; + } + + data[0] = rate; + data[1] = rate >> 8; + data[2] = rate >> 16; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, + UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n", + dev->devnum, iface, fmt->altsetting, rate, ep); + return err; } + if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, + UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n", + dev->devnum, iface, fmt->altsetting, ep); + return 0; /* some devices don't support reading */ + } + crate = data[0] | (data[1] << 8) | (data[2] << 16); + if (crate != rate) { + snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); + // runtime->rate = crate; + } + return 0; } -int snd_usb_init_sample_rate(struct usb_device *dev, int iface, +static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt, int rate) +{ + struct usb_device *dev = chip->dev; + unsigned char data[4]; + int err, crate; + + data[0] = rate; + data[1] = rate >> 8; + data[2] = rate >> 16; + data[3] = rate >> 24; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, + 0x0100, chip->clock_id << 8, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n", + dev->devnum, iface, fmt->altsetting, rate); + return err; + } + if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + 0x0100, chip->clock_id << 8, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n", + dev->devnum, iface, fmt->altsetting); + return err; + } + crate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); + if (crate != rate) + snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); + + return 0; +} + +int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, struct audioformat *fmt, int rate) { - unsigned int ep; - unsigned char data[3]; - int err; + struct usb_interface_descriptor *altsd = get_iface_desc(alts); - ep = get_endpoint(alts, 0)->bEndpointAddress; - /* if endpoint has sampling rate control, set it */ - if (fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE) { - int crate; - data[0] = rate; - data[1] = rate >> 8; - data[2] = rate >> 16; - if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, - UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n", - dev->devnum, iface, fmt->altsetting, rate, ep); - return err; - } - if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, - UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { - snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n", - dev->devnum, iface, fmt->altsetting, ep); - return 0; /* some devices don't support reading */ - } - crate = data[0] | (data[1] << 8) | (data[2] << 16); - if (crate != rate) { - snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); - // runtime->rate = crate; - } + switch (altsd->bInterfaceProtocol) { + case UAC_VERSION_1: + return set_sample_rate_v1(chip, iface, alts, fmt, rate); + + case UAC_VERSION_2: + return set_sample_rate_v2(chip, iface, alts, fmt, rate); } - return 0; + + return -EINVAL; } /* @@ -280,7 +361,7 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) if (fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX) subs->fill_max = 1; - if ((err = snd_usb_init_pitch(dev, subs->interface, alts, fmt)) < 0) + if ((err = snd_usb_init_pitch(subs->stream->chip, subs->interface, alts, fmt)) < 0) return err; subs->cur_audiofmt = fmt; @@ -343,7 +424,7 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream, struct usb_interface *iface; iface = usb_ifnum_to_if(subs->dev, fmt->iface); alts = &iface->altsetting[fmt->altset_idx]; - ret = snd_usb_init_sample_rate(subs->dev, subs->interface, alts, fmt, rate); + ret = snd_usb_init_sample_rate(subs->stream->chip, subs->interface, alts, fmt, rate); if (ret < 0) return ret; subs->cur_rate = rate; diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h index 85856016e056..1c931b68f3b5 100644 --- a/sound/usb/pcm.h +++ b/sound/usb/pcm.h @@ -3,11 +3,11 @@ void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream); -int snd_usb_init_pitch(struct usb_device *dev, int iface, +int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, struct audioformat *fmt); -int snd_usb_init_sample_rate(struct usb_device *dev, int iface, +int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, struct audioformat *fmt, int rate); diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 99a19ba43207..0c0b23b63794 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -159,8 +159,8 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip, fp->datainterval = snd_usb_parse_datainterval(chip, alts); fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); usb_set_interface(chip->dev, fp->iface, 0); - snd_usb_init_pitch(chip->dev, fp->iface, alts, fp); - snd_usb_init_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); + snd_usb_init_pitch(chip, fp->iface, alts, fp); + snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max); return 0; } |