From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Pargmann Subject: [PATCH v3 11/18] ASoC: fsl-ssi: Transmit enable synchronization Date: Mon, 14 Apr 2014 15:35:41 +0200 Message-ID: <1397482548-28463-12-git-send-email-mpa@pengutronix.de> References: <1397482548-28463-1-git-send-email-mpa@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1397482548-28463-1-git-send-email-mpa@pengutronix.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Mark Brown Cc: Fabio Estevam , alsa-devel@alsa-project.org, Alexander Shiyan , Timur Tabi , "Li.Xiubo@freescale.com" , kernel@pengutronix.de, Nicolin Chen , Markus Pargmann , linux-arm-kernel@lists.infradead.org List-Id: alsa-devel@alsa-project.org When the fsl-ssi unit is used in i2s slave mode, it is possible that the SSI unit starts transmitting data on the wrong channel. This happens because the SSI does not synchronize with the left-right-clock by default. This patch enables transmit enable synchronization. Signed-off-by: Markus Pargmann --- sound/soc/fsl/fsl_ssi.c | 1 + sound/soc/fsl/fsl_ssi.h | 1 + 2 files changed, 2 insertions(+) diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 5c4b4bb..d5f91b1 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -605,6 +605,7 @@ static int _fsl_ssi_set_dai_fmt(struct fsl_ssi_private *ssi_private, fsl_ssi_setup_reg_vals(ssi_private); scr = read_ssi(&ssi->scr) & ~(CCSR_SSI_SCR_SYN | CCSR_SSI_SCR_I2S_MODE_MASK); + scr |= CCSR_SSI_SCR_SYNC_TX_FS; mask = CCSR_SSI_STCR_TXBIT0 | CCSR_SSI_STCR_TFDIR | CCSR_SSI_STCR_TXDIR | CCSR_SSI_STCR_TSCKP | CCSR_SSI_STCR_TFSI | CCSR_SSI_STCR_TFSL | diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 2e95dd7..71c3e7e 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -39,6 +39,7 @@ struct ccsr_ssi { __be32 saccdis; /* 0x.0058 - SSI AC97 Channel Disable Register */ }; +#define CCSR_SSI_SCR_SYNC_TX_FS 0x00001000 #define CCSR_SSI_SCR_RFR_CLK_DIS 0x00000800 #define CCSR_SSI_SCR_TFR_CLK_DIS 0x00000400 #define CCSR_SSI_SCR_TCH_EN 0x00000100 -- 1.9.1