From patchwork Wed Feb 26 03:59:27 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 3720791 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 100779F2F7 for ; Wed, 26 Feb 2014 05:08:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2B9AC201F7 for ; Wed, 26 Feb 2014 05:08:35 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id EBB02201F0 for ; Wed, 26 Feb 2014 05:08:33 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 0CA03265659; Wed, 26 Feb 2014 06:08:33 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: ** X-Spam-Status: No, score=2.5 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, UNPARSEABLE_RELAY,UNRESOLVED_TEMPLATE autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id A43A826515F; Wed, 26 Feb 2014 06:08:13 +0100 (CET) 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 40C2926567B; Wed, 26 Feb 2014 06:08:12 +0100 (CET) Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe001.messaging.microsoft.com [216.32.180.11]) by alsa0.perex.cz (Postfix) with ESMTP id 6014B26515F for ; Wed, 26 Feb 2014 06:07:38 +0100 (CET) Received: from mail17-va3-R.bigfish.com (10.7.14.251) by VA3EHSOBE002.bigfish.com (10.7.40.22) with Microsoft SMTP Server id 14.1.225.22; Wed, 26 Feb 2014 05:07:37 +0000 Received: from mail17-va3 (localhost [127.0.0.1]) by mail17-va3-R.bigfish.com (Postfix) with ESMTP id 61E8F180194; Wed, 26 Feb 2014 05:07:37 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah21bch1fc6hzz1de098h8275bh1de097hz2dh2a8h839he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h24afh2327h2336h2438h2461h2487h24d7h2516h2545h255eh25cch1155h) Received: from mail17-va3 (localhost.localdomain [127.0.0.1]) by mail17-va3 (MessageSwitch) id 1393391256328587_17815; Wed, 26 Feb 2014 05:07:36 +0000 (UTC) Received: from VA3EHSMHS016.bigfish.com (unknown [10.7.14.234]) by mail17-va3.bigfish.com (Postfix) with ESMTP id 357863A004D; Wed, 26 Feb 2014 05:07:36 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS016.bigfish.com (10.7.99.26) with Microsoft SMTP Server (TLS) id 14.16.227.3; Wed, 26 Feb 2014 05:07:36 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.3.158.2; Wed, 26 Feb 2014 05:07:34 +0000 Received: from rock.am.freescale.net (rock.ap.freescale.net [10.193.20.106]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id s1Q56QF5024722; Tue, 25 Feb 2014 22:07:30 -0700 From: Xiubo Li To: , Date: Wed, 26 Feb 2014 11:59:27 +0800 Message-ID: <1393387175-15539-3-git-send-email-Li.Xiubo@freescale.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1393387175-15539-1-git-send-email-Li.Xiubo@freescale.com> References: <1393387175-15539-1-git-send-email-Li.Xiubo@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% Cc: fabio.estevam@freescale.com, moinejf@free.fr, alsa-devel@alsa-project.org, lars@metafoo.de, kuninori.morimoto.gx@renesas.com, tiwai@suse.de, s.hauer@pengutronix.de, timur@tabi.org, linux-kernel@vger.kernel.org, denis@eukrea.com, Xiubo Li , Guangyu.Chen@freescale.com, mpa@pengutronix.de, shawn.guo@linaro.org Subject: [alsa-devel] [PATCH 02/10] ASoC: fsl-utils: Add fsl_asoc_of_xlate_tdm_slot_mask() support. 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 add fsl_asoc_of_xlate_tdm_slot_mask() support for utils. For the some spcified DAI driver, this will be used to generate the TDM slot TX/RX mask. And the TX/RX mask will use a 0 bit for an active slot as default, and the default active bits are at the LSB of the masks. Signed-off-by: Xiubo Li --- sound/soc/fsl/fsl_utils.c | 27 +++++++++++++++++++++++++++ sound/soc/fsl/fsl_utils.h | 4 +++- 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/sound/soc/fsl/fsl_utils.c b/sound/soc/fsl/fsl_utils.c index b9e42b5..b536eb1 100644 --- a/sound/soc/fsl/fsl_utils.c +++ b/sound/soc/fsl/fsl_utils.c @@ -86,6 +86,33 @@ int fsl_asoc_get_dma_channel(struct device_node *ssi_np, } EXPORT_SYMBOL(fsl_asoc_get_dma_channel); +/** + * fsl_asoc_of_xlate_tdm_slot_mask - generate TDM slot TX/RX mask. + * + * @slots: Number of slots in use. + * @tx_mask: bitmask representing active TX slots. + * @rx_mask: bitmask representing active RX slots. + * + * This function used to generate the TDM slot TX/RX mask. And the TX/RX + * mask will use a 0 bit for an active slot as default, and the default + * active bits are at the LSB of the mask value. + */ +int fsl_asoc_of_xlate_tdm_slot_mask(unsigned int slots, + unsigned int *tx_mask, + unsigned int *rx_mask) +{ + if (!slots) + return -EINVAL; + + if (tx_mask) + *tx_mask = ~((1 << slots) - 1); + if (rx_mask) + *rx_mask = ~((1 << slots) - 1); + + return 0; +} +EXPORT_SYMBOL_GPL(fsl_asoc_of_xlate_tdm_slot_mask); + MODULE_AUTHOR("Timur Tabi "); MODULE_DESCRIPTION("Freescale ASoC utility code"); MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/fsl/fsl_utils.h b/sound/soc/fsl/fsl_utils.h index b295112..01b01f9 100644 --- a/sound/soc/fsl/fsl_utils.h +++ b/sound/soc/fsl/fsl_utils.h @@ -22,5 +22,7 @@ int fsl_asoc_get_dma_channel(struct device_node *ssi_np, const char *name, struct snd_soc_dai_link *dai, unsigned int *dma_channel_id, unsigned int *dma_id); - +int fsl_asoc_of_xlate_tdm_slot_mask(unsigned int slots, + unsigned int *tx_mask, + unsigned int *rx_mask); #endif /* _FSL_UTILS_H */