From patchwork Thu Oct 15 10:57:35 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricard Wanderlof X-Patchwork-Id: 7404891 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8731B9F1D5 for ; Thu, 15 Oct 2015 10:59:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6A3C22085C for ; Thu, 15 Oct 2015 10:59:22 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id E8C4820864 for ; Thu, 15 Oct 2015 10:59:20 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 12A90266641; Thu, 15 Oct 2015 12:59:19 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id BE1EB266576; Thu, 15 Oct 2015 12:57:51 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 788F6266587; Thu, 15 Oct 2015 12:57:50 +0200 (CEST) Received: from bastet.se.axis.com (bastet.se.axis.com [195.60.68.11]) by alsa0.perex.cz (Postfix) with ESMTP id AE962260464 for ; Thu, 15 Oct 2015 12:57:40 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by bastet.se.axis.com (Postfix) with ESMTP id 7EEB7180A5; Thu, 15 Oct 2015 12:57:40 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at bastet.se.axis.com Received: from bastet.se.axis.com ([IPv6:::ffff:127.0.0.1]) by localhost (bastet.se.axis.com [::ffff:127.0.0.1]) (amavisd-new, port 10024) with LMTP id L6pf87BZ0U0P; Thu, 15 Oct 2015 12:57:39 +0200 (CEST) Received: from boulder.se.axis.com (boulder.se.axis.com [10.0.2.104]) by bastet.se.axis.com (Postfix) with ESMTP id 3032F181D5; Thu, 15 Oct 2015 12:57:39 +0200 (CEST) Received: from boulder.se.axis.com (localhost [127.0.0.1]) by postfix.imss71 (Postfix) with ESMTP id 142D413A5; Thu, 15 Oct 2015 12:57:39 +0200 (CEST) Received: from thoth.se.axis.com (thoth.se.axis.com [10.0.2.173]) by boulder.se.axis.com (Postfix) with ESMTP id F2C17136B; Thu, 15 Oct 2015 12:57:38 +0200 (CEST) Received: from lnxricardw1.se.axis.com (lnxricardw1.se.axis.com [10.88.7.2]) by thoth.se.axis.com (Postfix) with ESMTP id DC8E334009; Thu, 15 Oct 2015 12:57:38 +0200 (CEST) Received: by lnxricardw1.se.axis.com (Postfix, from userid 9470) id DB6165407A; Thu, 15 Oct 2015 12:57:38 +0200 (CEST) From: Ricard Wanderlof To: alsa-devel Date: Thu, 15 Oct 2015 12:57:35 +0200 Message-Id: <1444906657-16791-6-git-send-email-ricardw@axis.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1444906657-16791-1-git-send-email-ricardw@axis.com> References: <1444906657-16791-1-git-send-email-ricardw@axis.com> Cc: Takashi Iwai , Ricard Wanderlof , Ricard Wanderlof Subject: [alsa-devel] [PATCH 5/7] ALSA: USB-audio: Add quirk for Zoom R16 playback X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Stuff 4 byte (S32_LE) length descriptor at the start of each isochronous packet. Tested with Zoom R16, full duplex. Signed-off-by: Ricard Wanderlof --- sound/usb/card.h | 1 + sound/usb/endpoint.c | 25 ++++++++++++++++++++----- sound/usb/pcm.c | 32 +++++++++++++++++++++++++++++++- sound/usb/quirks-table.h | 7 ++++--- sound/usb/quirks.c | 3 +++ sound/usb/stream.c | 1 + sound/usb/usbaudio.h | 1 + 7 files changed, 61 insertions(+), 9 deletions(-) diff --git a/sound/usb/card.h b/sound/usb/card.h index ef580b4..71778ca 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -122,6 +122,7 @@ struct snd_usb_substream { unsigned int buffer_periods; /* current periods per buffer */ unsigned int altset_idx; /* USB data format: index of alternate setting */ unsigned int txfr_quirk:1; /* allow sub-frame alignment */ + unsigned int tx_length_quirk:1; /* add length specifier to transfers */ unsigned int fmt_type; /* USB audio format type (1-3) */ unsigned int pkt_offset_adj; /* Bytes to drop from beginning of packets (for non-compliant devices) */ diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index 825a06c..1c5280a 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -188,9 +188,17 @@ static void prepare_silent_urb(struct snd_usb_endpoint *ep, { struct urb *urb = ctx->urb; unsigned int offs = 0; + unsigned int extra = 0; + u32 packet_length; int i; + /* For tx_length_quirk, put packet length at start of packet */ + if (ep->chip->tx_length_quirk) + extra = sizeof(packet_length); + for (i = 0; i < ctx->packets; ++i) { + unsigned int offset; + unsigned int length; int counts; if (ctx->packet_size[i]) @@ -198,15 +206,22 @@ static void prepare_silent_urb(struct snd_usb_endpoint *ep, else counts = snd_usb_endpoint_next_packet_size(ep); - urb->iso_frame_desc[i].offset = offs * ep->stride; - urb->iso_frame_desc[i].length = counts * ep->stride; + length = counts * ep->stride; /* number of silent bytes */ + offset = offs * ep->stride + extra * i; + urb->iso_frame_desc[i].offset = offset; + urb->iso_frame_desc[i].length = length + extra; + if (extra) { + packet_length = cpu_to_le32(length); + memcpy(urb->transfer_buffer + offset, + &packet_length, sizeof(packet_length)); + } + memset(urb->transfer_buffer + offset + extra, + ep->silence_value, length); offs += counts; } urb->number_of_packets = ctx->packets; - urb->transfer_buffer_length = offs * ep->stride; - memset(urb->transfer_buffer, ep->silence_value, - offs * ep->stride); + urb->transfer_buffer_length = offs * ep->stride + ctx->packets * extra; } /* diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index e3c5bc0..ec3d381 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1409,6 +1409,32 @@ static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, subs->hwptr_done -= runtime->buffer_size * stride; } +static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, + struct urb *urb, int stride, + unsigned int bytes) +{ + u32 packet_length; + int i; + + /* Put U32_LE length descriptor at start of each packet. */ + for (i = 0; i < urb->number_of_packets; i++) { + unsigned int length = urb->iso_frame_desc[i].length; + unsigned int offset = urb->iso_frame_desc[i].offset; + + packet_length = cpu_to_le32(length); + offset += i * sizeof(packet_length); + urb->iso_frame_desc[i].offset = offset; + urb->iso_frame_desc[i].length += sizeof(packet_length); + memcpy(urb->transfer_buffer + offset, + &packet_length, sizeof(packet_length)); + copy_to_urb(subs, urb, offset + sizeof(packet_length), + stride, length); + } + /* Adjust transfer size accordingly. */ + bytes += urb->number_of_packets * sizeof(packet_length); + return bytes; +} + static void prepare_playback_urb(struct snd_usb_substream *subs, struct urb *urb) { @@ -1488,7 +1514,11 @@ static void prepare_playback_urb(struct snd_usb_substream *subs, subs->hwptr_done -= runtime->buffer_size * stride; } else { /* usual PCM */ - copy_to_urb(subs, urb, 0, stride, bytes); + if (!subs->tx_length_quirk) + copy_to_urb(subs, urb, 0, stride, bytes); + else + bytes = copy_to_urb_quirk(subs, urb, stride, bytes); + /* bytes is now amount of outgoing data */ } /* update delay with exact number of samples queued */ diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index e475665..4a8ca637 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3184,8 +3184,9 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"), * ZOOM R16/24 in audio interface mode. * Mixer descriptors are garbage, further quirks will be needed * to make any of it functional, thus disabled for now. - * Playback stream appears to start and run fine but no sound - * is produced, so also disabled for now. + * Playback requires an extra four byte LE length indicator + * at the start of each isochronous packet. This quirk is + * enabled in create_standard_audio_quirk(). */ USB_DEVICE(0x1686, 0x00dd), .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { @@ -3200,7 +3201,7 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"), { /* Playback */ .ifnum = 1, - .type = QUIRK_IGNORE_INTERFACE, + .type = QUIRK_AUDIO_STANDARD_INTERFACE, }, { /* Capture */ diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 00ebc0c..79a9540 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -115,6 +115,9 @@ static int create_standard_audio_quirk(struct snd_usb_audio *chip, struct usb_interface_descriptor *altsd; int err; + if (chip->usb_id == USB_ID(0x1686, 0x00dd)) /* Zoom R16 */ + chip->tx_length_quirk = 1; + alts = &iface->altsetting[0]; altsd = get_iface_desc(alts); err = snd_usb_parse_audio_interface(chip, altsd->bInterfaceNumber); diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 9700860..8ee14f2 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -92,6 +92,7 @@ static void snd_usb_init_substream(struct snd_usb_stream *as, subs->direction = stream; subs->dev = as->chip->dev; subs->txfr_quirk = as->chip->txfr_quirk; + subs->tx_length_quirk = as->chip->tx_length_quirk; subs->speed = snd_usb_get_speed(subs->dev); subs->pkt_offset_adj = 0; diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 33a1764..15a1271 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -43,6 +43,7 @@ struct snd_usb_audio { atomic_t usage_count; wait_queue_head_t shutdown_wait; unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ + unsigned int tx_length_quirk:1; /* Put length specifier in transfers */ int num_interfaces; int num_suspended_intf;