Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752859AbaAND2P (ORCPT ); Mon, 13 Jan 2014 22:28:15 -0500 Received: from newsmtp5.atmel.com ([204.2.163.5]:45346 "EHLO sjogate2.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751756AbaAND2K (ORCPT ); Mon, 13 Jan 2014 22:28:10 -0500 From: Bo Shen To: broonie@kernel.org Cc: nicolas.ferre@atmel.com, plagnioj@jcrosoft.com, linux-sound@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, Bo Shen , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Lars-Peter Clausen , linux-kernel@vger.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> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; }; -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/