From patchwork Tue Jan 14 03:25:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bo Shen X-Patchwork-Id: 3483771 Return-Path: X-Original-To: patchwork-linux-arm@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 48B45C02DC for ; Tue, 14 Jan 2014 03:28:18 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7D08420161 for ; Tue, 14 Jan 2014 03:28:17 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6A05B20160 for ; Tue, 14 Jan 2014 03:28:16 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W2ufZ-0002WK-18; Tue, 14 Jan 2014 03:28:01 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W2ufV-0006mU-Gz; Tue, 14 Jan 2014 03:27:57 +0000 Received: from newsmtp5.atmel.com ([204.2.163.5] helo=sjogate2.atmel.com) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W2ufR-0006l3-BK for linux-arm-kernel@lists.infradead.org; Tue, 14 Jan 2014 03:27:54 +0000 Received: from Dev4Android.corp.atmel.com ([10.217.2.46]) by sjogate2.atmel.com (8.13.6/8.13.6) with ESMTP id s0E3Istn013915; Mon, 13 Jan 2014 19:20:29 -0800 (PST) From: Bo Shen To: broonie@kernel.org Subject: [PATCH 1/3] ASoC: atmel_ssc_dai: make option to choose clock Date: Tue, 14 Jan 2014 11:25:54 +0800 Message-Id: <1389669956-2304-2-git-send-email-voice.shen@atmel.com> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1389669956-2304-1-git-send-email-voice.shen@atmel.com> References: <1389669956-2304-1-git-send-email-voice.shen@atmel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140113_222753_553713_86A67219 X-CRM114-Status: UNSURE ( 9.83 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.0 (--) Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen , Takashi Iwai , linux-kernel@vger.kernel.org, nicolas.ferre@atmel.com, Liam Girdwood , linux-sound@vger.kernel.org, Jaroslav Kysela , Bo Shen , plagnioj@jcrosoft.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When SSC works in slave mode, according to the hardware design, the clock can get from TK pin, also can get from RK pin. So, add one parameter to choose where the clock from. Signed-off-by: Bo Shen --- sound/soc/atmel/atmel_ssc_dai.c | 16 ++++++++++++---- sound/soc/atmel/atmel_ssc_dai.h | 1 + 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index 8697ced..03eb0be 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -340,6 +340,7 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { int id = dai->id; + struct snd_soc_card *card = dai->card; struct atmel_ssc_info *ssc_p = &ssc_info[id]; struct atmel_pcm_dma_params *dma_params; int dir, channels, bits; @@ -347,6 +348,9 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, int start_event; int ret; + ssc_p->clk_from_rk_pin = + ((struct atmel_ssc_info *)(card->drvdata))->clk_from_rk_pin; + /* * Currently, there is only one set of dma params for * each direction. If more are added, this code will @@ -466,7 +470,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, | SSC_BF(RCMR_START, start_event) | SSC_BF(RCMR_CKI, SSC_CKI_RISING) | SSC_BF(RCMR_CKO, SSC_CKO_NONE) - | SSC_BF(RCMR_CKS, SSC_CKS_CLOCK); + | SSC_BF(RCMR_CKS, ssc_p->clk_from_rk_pin ? + SSC_CKS_PIN : SSC_CKS_CLOCK); rfmr = SSC_BF(RFMR_FSEDGE, SSC_FSEDGE_POSITIVE) | SSC_BF(RFMR_FSOS, SSC_FSOS_NONE) @@ -481,7 +486,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, | SSC_BF(TCMR_START, start_event) | SSC_BF(TCMR_CKI, SSC_CKI_FALLING) | SSC_BF(TCMR_CKO, SSC_CKO_NONE) - | SSC_BF(TCMR_CKS, SSC_CKS_PIN); + | SSC_BF(TCMR_CKS, ssc_p->clk_from_rk_pin ? + SSC_CKS_CLOCK : SSC_CKS_PIN); tfmr = SSC_BF(TFMR_FSEDGE, SSC_FSEDGE_POSITIVE) | SSC_BF(TFMR_FSDEN, 0) @@ -550,7 +556,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, | SSC_BF(RCMR_START, SSC_START_RISING_RF) | SSC_BF(RCMR_CKI, SSC_CKI_RISING) | SSC_BF(RCMR_CKO, SSC_CKO_NONE) - | SSC_BF(RCMR_CKS, SSC_CKS_PIN); + | SSC_BF(RCMR_CKS, ssc_p->clk_from_rk_pin ? + SSC_CKS_PIN : SSC_CKS_CLOCK); rfmr = SSC_BF(RFMR_FSEDGE, SSC_FSEDGE_POSITIVE) | SSC_BF(RFMR_FSOS, SSC_FSOS_NONE) @@ -565,7 +572,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream, | SSC_BF(TCMR_START, SSC_START_RISING_RF) | SSC_BF(TCMR_CKI, SSC_CKI_FALLING) | SSC_BF(TCMR_CKO, SSC_CKO_NONE) - | SSC_BF(TCMR_CKS, SSC_CKS_PIN); + | SSC_BF(RCMR_CKS, ssc_p->clk_from_rk_pin ? + SSC_CKS_CLOCK : SSC_CKS_PIN); tfmr = SSC_BF(TFMR_FSEDGE, SSC_FSEDGE_POSITIVE) | SSC_BF(TFMR_FSDEN, 0) diff --git a/sound/soc/atmel/atmel_ssc_dai.h b/sound/soc/atmel/atmel_ssc_dai.h index b1f08d5..f147895 100644 --- a/sound/soc/atmel/atmel_ssc_dai.h +++ b/sound/soc/atmel/atmel_ssc_dai.h @@ -113,6 +113,7 @@ struct atmel_ssc_info { unsigned short cmr_div; unsigned short tcmr_period; unsigned short rcmr_period; + bool clk_from_rk_pin; struct atmel_pcm_dma_params *dma_params[2]; struct atmel_ssc_state ssc_state; };