Re: [PATCH] sound: usb: USB3 Super Speed patch

Re: [PATCH] sound: usb: USB3 Super Speed patch

[Clemens Ladisch]

Paul Zimmerman wrote:
> This patch adds Super Speed support to the USB drivers under sound/. It adds
> tests for USB_SPEED_SUPER to all the places that check for the USB speed.

> +++ b/sound/usb/midi.c
> @@ -834,7 +834,8 @@ static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
> +++ b/sound/usb/misc/ua101.c
> +++ b/sound/usb/usx2y/us122l.c
> +++ b/sound/usb/usx2y/usb_stream.c

These devices do not support super speed.

> +++ b/sound/usb/pcm.c
> -	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
> +	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH &&
> +	    snd_usb_get_speed(subs->dev) != USB_SPEED_SUPER)
>  		/* full speed devices have fixed data packet interval */
>  		ptmin = 1000;

In places like this, it would be better to write something like
	if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
or
	if (snd_usb_get_speed(subs->dev) < USB_SPEED_HIGH)


Regards,
Clemens

Re: [alsa-devel] [PATCH] sound: usb: USB3 Super Speed patch

[Daniel Mack]

On Wed, Aug 11, 2010 at 08:58:29AM +0200, Clemens Ladisch wrote:
> Paul Zimmerman wrote:
> > This patch adds Super Speed support to the USB drivers under sound/. It adds
> > tests for USB_SPEED_SUPER to all the places that check for the USB speed.

Can we see the full patch on this list, please?

Just curious - did you actually test the driver with a SuperSpeed
capable USB audio device? Which device was that?

Thanks,
Daniel
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Re: [alsa-devel] [PATCH] sound: usb: USB3 Super Speed patch

[Takashi Iwai]

At Wed, 11 Aug 2010 09:34:43 +0200,
Daniel Mack wrote:
> 
> On Wed, Aug 11, 2010 at 08:58:29AM +0200, Clemens Ladisch wrote:
> > Paul Zimmerman wrote:
> > > This patch adds Super Speed support to the USB drivers under sound/. It adds
> > > tests for USB_SPEED_SUPER to all the places that check for the USB speed.
> 
> Can we see the full patch on this list, please?

It was sent to linux-usb ML, apparently.
I'll forward his post to alsa-devel ML.

> Just curious - did you actually test the driver with a SuperSpeed
> capable USB audio device? Which device was that?

It's described in the patch comment.


Takashi
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RE: [alsa-devel] [PATCH] sound: usb: USB3 Super Speed patch

[Paul Zimmerman]

> From: Daniel Mack [mailto:daniel-rDUAYElUppE@public.gmane.org]
> On Wed, Aug 11, 2010 at 08:58:29AM +0200, Clemens Ladisch wrote:
> > Paul Zimmerman wrote:
> > > This patch adds Super Speed support to the USB drivers under sound/. It adds
> > > tests for USB_SPEED_SUPER to all the places that check for the USB speed.
> 
> Can we see the full patch on this list, please?

OK, when I resend the patch I will copy alsa-devel.

> 
> Just curious - did you actually test the driver with a SuperSpeed
> capable USB audio device? Which device was that?

It's the Synopsys SuperSpeed USB3 device core, on an FPGA PCI development board.
The audio device implementation is not a real product, just a test platform. To
implement it, we used the audio gadget driver with some mods to support USB3.

> Thanks,
> Daniel
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Re: [alsa-devel] [PATCH] sound: usb: USB3 Super Speed patch

[Daniel Mack]

On Wed, Aug 11, 2010 at 08:58:29AM +0200, Clemens Ladisch wrote:
> Paul Zimmerman wrote:
> > This patch adds Super Speed support to the USB drivers under sound/. It adds
> > tests for USB_SPEED_SUPER to all the places that check for the USB speed.
> 
> > +++ b/sound/usb/midi.c
> > @@ -834,7 +834,8 @@ static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
> > +++ b/sound/usb/misc/ua101.c
> > +++ b/sound/usb/usx2y/us122l.c
> > +++ b/sound/usb/usx2y/usb_stream.c
> 
> These devices do not support super speed.
> 
> > +++ b/sound/usb/pcm.c
> > -	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
> > +	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH &&
> > +	    snd_usb_get_speed(subs->dev) != USB_SPEED_SUPER)
> >  		/* full speed devices have fixed data packet interval */
> >  		ptmin = 1000;
> 
> In places like this, it would be better to write something like
> 	if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
> or
> 	if (snd_usb_get_speed(subs->dev) < USB_SPEED_HIGH)

Yep, or reconstruct the code to use switch-case statements.

Other than that, the patch looks fine to me.

Thanks,
Daniel
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RE: [PATCH] sound: usb: USB3 Super Speed patch

[Paul Zimmerman]

OK, I will respin the patch.

-- 
Paul

-----Original Message-----
From: Clemens Ladisch [mailto:clemens-P6GI/4k7KOmELgA04lAiVw@public.gmane.org] 
Sent: Tuesday, August 10, 2010 11:58 PM
To: Paul Zimmerman
Cc: Jaroslav Kysela; Takashi Iwai; Greg Kroah-Hartman; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org
Subject: Re: [PATCH] sound: usb: USB3 Super Speed patch

Paul Zimmerman wrote:
> This patch adds Super Speed support to the USB drivers under sound/. It adds
> tests for USB_SPEED_SUPER to all the places that check for the USB speed.

> +++ b/sound/usb/midi.c
> @@ -834,7 +834,8 @@ static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
> +++ b/sound/usb/misc/ua101.c
> +++ b/sound/usb/usx2y/us122l.c
> +++ b/sound/usb/usx2y/usb_stream.c

These devices do not support super speed.

> +++ b/sound/usb/pcm.c
> -	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
> +	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH &&
> +	    snd_usb_get_speed(subs->dev) != USB_SPEED_SUPER)
>  		/* full speed devices have fixed data packet interval */
>  		ptmin = 1000;

In places like this, it would be better to write something like
	if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
or
	if (snd_usb_get_speed(subs->dev) < USB_SPEED_HIGH)


Regards,
Clemens
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Forward: [PATCH] sound: usb: USB3 Super Speed patch

[Takashi Iwai]

[-- Attachment #1: Type: message/rfc822, Size: 10485 bytes --]

From: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
To: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>, Greg Kroah-Hartman <gregkh@suse.de>, "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>
Subject: [PATCH] sound: usb: USB3 Super Speed patch
Date: Tue, 10 Aug 2010 18:28:44 -0700
Message-ID: <F6C4814A9B336243ABC3D1FB44E08AE8012C2846E3@US01WXMBX1.internal.synopsys.com>

This patch adds Super Speed support to the USB drivers under sound/. It adds
tests for USB_SPEED_SUPER to all the places that check for the USB speed.

This patch has been tested with our SS USB3 device emulating a set of Yamaha
speakers and a Logitech microphone, but with the descriptors modified to add
USB3 support. It has also been tested with the real speakers and microphone,
to make sure that USB2 devices still work.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
--- 
 sound/usb/card.c             |    6 ++++--
 sound/usb/endpoint.c         |    3 ++-
 sound/usb/helper.c           |    3 ++-
 sound/usb/midi.c             |    3 ++-
 sound/usb/misc/ua101.c       |    2 ++
 sound/usb/pcm.c              |    6 ++++--
 sound/usb/proc.c             |    3 ++-
 sound/usb/urb.c              |    3 ++-
 sound/usb/usx2y/us122l.c     |    9 ++++++---
 sound/usb/usx2y/usb_stream.c |    5 +++--
 10 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 7a8ac1d..9f35ffb 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -301,7 +301,8 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
 
 	if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
 	    snd_usb_get_speed(dev) != USB_SPEED_FULL &&
-	    snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
+	    snd_usb_get_speed(dev) != USB_SPEED_HIGH &&
+	    snd_usb_get_speed(dev) != USB_SPEED_SUPER) {
 		snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
 		return -ENXIO;
 	}
@@ -380,7 +381,8 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
 	strlcat(card->longname,
 		snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
 		snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
-		", high speed",
+		snd_usb_get_speed(dev) == USB_SPEED_HIGH ? ", high speed" :
+		", super speed",
 		sizeof(card->longname));
 
 	snd_usb_audio_create_proc(chip);
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 6f6596c..59b518d 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -386,7 +386,8 @@ int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
 		fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
 		/* num_channels is only set for v2 interfaces */
 		fp->channels = num_channels;
-		if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
+		if (snd_usb_get_speed(dev) == USB_SPEED_HIGH ||
+		    snd_usb_get_speed(dev) == USB_SPEED_SUPER)
 			fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
 					* (fp->maxpacksize & 0x7ff);
 		fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no);
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index d48d6f8..a86ee2d 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -103,7 +103,8 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
 unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip,
 					 struct usb_host_interface *alts)
 {
-	if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH &&
+	if ((snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH ||
+	     snd_usb_get_speed(chip->dev) == USB_SPEED_SUPER) &&
 	    get_endpoint(alts, 0)->bInterval >= 1 &&
 	    get_endpoint(alts, 0)->bInterval <= 4)
 		return get_endpoint(alts, 0)->bInterval - 1;
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 4678564..4c7808f 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -834,7 +834,8 @@ static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
 
 	if (!ep->ports[0].active)
 		return;
-	count = snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_HIGH ? 1 : 2;
+	count = snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_SUPER ? 1 :
+		snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_HIGH ? 1 : 2;
 	count = snd_rawmidi_transmit(ep->ports[0].substream,
 				     urb->transfer_buffer,
 				     count);
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c
index fb5d68f..c15b189 100644
--- a/sound/usb/misc/ua101.c
+++ b/sound/usb/misc/ua101.c
@@ -1013,6 +1013,7 @@ static int detect_usb_format(struct ua101 *ua)
 		ua->packets_per_second = 1000;
 		break;
 	case USB_SPEED_HIGH:
+	case USB_SPEED_SUPER:
 		ua->packets_per_second = 8000;
 		break;
 	default:
@@ -1273,6 +1274,7 @@ static int ua101_probe(struct usb_interface *interface,
 	snprintf(ua->card->longname, sizeof(ua->card->longname),
 		 "EDIROL %s (serial %s), %u Hz at %s, %s speed", name,
 		 ua->dev->serial ? ua->dev->serial : "?", ua->rate, usb_path,
+		 ua->dev->speed == USB_SPEED_SUPER ? "super" :
 		 ua->dev->speed == USB_SPEED_HIGH ? "high" : "full");
 
 	err = alloc_stream_buffers(ua, &ua->capture);
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index 4568298..4fc33d1 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -467,7 +467,8 @@ static int hw_check_valid_format(struct snd_usb_substream *subs,
 		return 0;
 	}
 	/* check whether the period time is >= the data packet interval */
-	if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) {
+	if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH ||
+	    snd_usb_get_speed(subs->dev) == USB_SPEED_SUPER) {
 		ptime = 125 * (1 << fp->datainterval);
 		if (ptime > pt->max || (ptime == pt->max && pt->openmax)) {
 			hwc_debug("   > check: ptime %u > max %u\n", ptime, pt->max);
@@ -735,7 +736,8 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre
 	}
 
 	param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME;
-	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
+	if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH &&
+	    snd_usb_get_speed(subs->dev) != USB_SPEED_SUPER)
 		/* full speed devices have fixed data packet interval */
 		ptmin = 1000;
 	if (ptmin == 1000)
diff --git a/sound/usb/proc.c b/sound/usb/proc.c
index f5e3f35..b2b5760 100644
--- a/sound/usb/proc.c
+++ b/sound/usb/proc.c
@@ -107,7 +107,8 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
 			}
 			snd_iprintf(buffer, "\n");
 		}
-		if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
+		if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH ||
+		    snd_usb_get_speed(subs->dev) == USB_SPEED_SUPER)
 			snd_iprintf(buffer, "    Data packet interval: %d us\n",
 				    125 * (1 << fp->datainterval));
 		// snd_iprintf(buffer, "    Max Packet Size = %d\n", fp->maxpacksize);
diff --git a/sound/usb/urb.c b/sound/usb/urb.c
index de607d4..235263f 100644
--- a/sound/usb/urb.c
+++ b/sound/usb/urb.c
@@ -244,7 +244,8 @@ int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
 	else
 		subs->curpacksize = maxsize;
 
-	if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
+	if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH ||
+	    snd_usb_get_speed(subs->dev) == USB_SPEED_SUPER)
 		packs_per_ms = 8 >> subs->datainterval;
 	else
 		packs_per_ms = 1;
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index 6ef68e4..24c7f40 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -336,7 +336,8 @@ static bool us122l_start(struct us122l *us122l,
 	unsigned use_packsize = 0;
 	bool success = false;
 
-	if (us122l->dev->speed == USB_SPEED_HIGH) {
+	if (us122l->dev->speed == USB_SPEED_HIGH ||
+	    us122l->dev->speed == USB_SPEED_SUPER) {
 		/* The us-122l's descriptor defaults to iso max_packsize 78,
 		   which isn't needed for samplerates <= 48000.
 		   Lets save some memory:
@@ -396,7 +397,8 @@ static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
 		err = -ENXIO;
 		goto free;
 	}
-	high_speed = us122l->dev->speed == USB_SPEED_HIGH;
+	high_speed = us122l->dev->speed == USB_SPEED_HIGH ||
+		     us122l->dev->speed == USB_SPEED_SUPER;
 	if ((cfg->sample_rate != 44100 && cfg->sample_rate != 48000  &&
 	     (!high_speed ||
 	      (cfg->sample_rate != 88200 && cfg->sample_rate != 96000))) ||
@@ -607,7 +609,8 @@ static int snd_us122l_probe(struct usb_interface *intf,
 
 	if ((device->descriptor.idProduct == USB_ID_US144 ||
 	     device->descriptor.idProduct == USB_ID_US144MKII)
-		&& device->speed == USB_SPEED_HIGH) {
+		&& (device->speed == USB_SPEED_HIGH ||
+		    device->speed == USB_SPEED_SUPER)) {
 		snd_printk(KERN_ERR "disable ehci-hcd to run US-144 \n");
 		return -ENODEV;
 	}
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
index c400ade..518eaba 100644
--- a/sound/usb/usx2y/usb_stream.c
+++ b/sound/usb/usx2y/usb_stream.c
@@ -160,7 +160,8 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	int in_pipe, out_pipe;
 	int read_size = sizeof(struct usb_stream);
 	int write_size;
-	int usb_frames = dev->speed == USB_SPEED_HIGH ? 8000 : 1000;
+	int usb_frames = (dev->speed == USB_SPEED_HIGH ||
+			  dev->speed == USB_SPEED_SUPER) ? 8000 : 1000;
 	int pg;
 
 	in_pipe = usb_rcvisocpipe(dev, in_endpoint);
@@ -177,7 +178,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 
 	packets = period_frames * usb_frames / sample_rate + 1;
 
-	if (dev->speed == USB_SPEED_HIGH)
+	if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER)
 		packets = (packets + 7) & ~7;
 
 	read_size += packets * USB_STREAM_URBDEPTH *
-- 

Paul


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