From patchwork Fri Apr 25 13:44:43 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 4062751 X-Patchwork-Delegate: tiwai@suse.de Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4E079BFF02 for ; Fri, 25 Apr 2014 13:47:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 79C3420397 for ; Fri, 25 Apr 2014 13:47:09 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 39E6920383 for ; Fri, 25 Apr 2014 13:47:08 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 47D15265535; Fri, 25 Apr 2014 15:47:07 +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=-1.9 required=5.0 tests=BAYES_00,NO_DNS_FOR_FROM, UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 5351D26549D; Fri, 25 Apr 2014 15:45:52 +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 48CF7265497; Fri, 25 Apr 2014 15:45:50 +0200 (CEST) Received: from smtp310.phy.lolipop.jp (smtp310.phy.lolipop.jp [210.157.22.78]) by alsa0.perex.cz (Postfix) with ESMTP id CED70265489 for ; Fri, 25 Apr 2014 15:45:41 +0200 (CEST) Received: from smtp310.phy.lolipop.lan (HELO smtp310.phy.lolipop.jp) (172.17.1.10) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp310.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Fri, 25 Apr 2014 22:45:40 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp310.phy.lolipop.jp (LOLIPOP-Fsecure); Fri, 25 Apr 2014 22:45:31 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de, perex@perex.cz Date: Fri, 25 Apr 2014 22:44:43 +0900 Message-Id: <1398433530-13136-3-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398433530-13136-1-git-send-email-o-takashi@sakamocchi.jp> References: <1398433530-13136-1-git-send-email-o-takashi@sakamocchi.jp> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, linux1394-devel@lists.sourceforge.net, ffado-devel@lists.sf.net Subject: [alsa-devel] [PATCH 02/49] firewire-lib: Add macros instead of fixed value for AMDTP 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds some macros instead of fixed value for AMDTP according to IEC 61883-1/6. These macros will also be used by followed patches. Signed-off-by: Takashi Sakamoto --- sound/firewire/amdtp.c | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) diff --git a/sound/firewire/amdtp.c b/sound/firewire/amdtp.c index 16fe858..38013f9 100644 --- a/sound/firewire/amdtp.c +++ b/sound/firewire/amdtp.c @@ -20,12 +20,28 @@ #define TRANSFER_DELAY_TICKS 0x2e00 /* 479.17 µs */ +/* isochronous header parameters */ +#define ISO_DATA_LENGTH_SHIFT 16 #define TAG_CIP 1 +/* common isochronous packet header parameters */ #define CIP_EOH (1u << 31) +#define CIP_EOH_MASK 0x80000000 #define CIP_FMT_AM (0x10 << 24) -#define AMDTP_FDF_AM824 (0 << 19) -#define AMDTP_FDF_SFC_SHIFT 16 +#define CIP_FMT_MASK 0x3f000000 +#define CIP_SYT_MASK 0x0000ffff +#define CIP_SYT_NO_INFO 0xffff +#define CIP_FDF_MASK 0x00ff0000 +#define CIP_FDF_SFC_SHIFT 16 + +/* + * Audio and Music transfer protocol specific parameters + * only "Clock-based rate control mode" is supported + */ +#define AMDTP_FDF_AM824 (0 << (CIP_FDF_SFC_SHIFT + 3)) +#define AMDTP_DBS_MASK 0x00ff0000 +#define AMDTP_DBS_SHIFT 16 +#define AMDTP_DBC_MASK 0x000000ff /* TODO: make these configurable */ #define INTERRUPT_INTERVAL 16 @@ -280,9 +296,9 @@ static unsigned int calculate_syt(struct amdtp_stream *s, syt = (cycle + syt_offset / TICKS_PER_CYCLE) << 12; syt += syt_offset % TICKS_PER_CYCLE; - return syt & 0xffff; + return syt & CIP_SYT_MASK; } else { - return 0xffff; /* no info */ + return CIP_SYT_NO_INFO; } } @@ -438,17 +454,17 @@ static void queue_out_packet(struct amdtp_stream *s, unsigned int cycle) syt = calculate_syt(s, cycle); if (!(s->flags & CIP_BLOCKING)) data_blocks = calculate_data_blocks(s); - else if (syt != 0xffff) + else if (syt != CIP_SYT_NO_INFO) data_blocks = s->syt_interval; else data_blocks = 0; buffer = s->buffer.packets[index].buffer; buffer[0] = cpu_to_be32(ACCESS_ONCE(s->source_node_id_field) | - (s->data_block_quadlets << 16) | + (s->data_block_quadlets << AMDTP_DBS_SHIFT) | s->data_block_counter); buffer[1] = cpu_to_be32(CIP_EOH | CIP_FMT_AM | AMDTP_FDF_AM824 | - (s->sfc << AMDTP_FDF_SFC_SHIFT) | syt); + (s->sfc << CIP_FDF_SFC_SHIFT) | syt); buffer += 2; pcm = ACCESS_ONCE(s->pcm);