From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753861AbdKFPXF (ORCPT ); Mon, 6 Nov 2017 10:23:05 -0500 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:21719 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752855AbdKFPWv (ORCPT ); Mon, 6 Nov 2017 10:22:51 -0500 From: Olivier Moysan To: , , , , , , , , , , , , , CC: , Subject: [PATCH 1/2] ASoC: stm32: spdifrx: fix 16 bits capture Date: Mon, 6 Nov 2017 16:18:52 +0100 Message-ID: <1509981533-28622-2-git-send-email-olivier.moysan@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1509981533-28622-1-git-send-email-olivier.moysan@st.com> References: <1509981533-28622-1-git-send-email-olivier.moysan@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.201.23.16] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-11-06_05:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change DMA bus width to manage properly 16 bits packed format. Signed-off-by: Olivier Moysan --- sound/soc/stm/stm32_spdifrx.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c index 84cc567..d7dbe84 100644 --- a/sound/soc/stm/stm32_spdifrx.c +++ b/sound/soc/stm/stm32_spdifrx.c @@ -750,17 +750,21 @@ static int stm32_spdifrx_hw_params(struct snd_pcm_substream *substream, switch (data_size) { case 16: fmt = SPDIFRX_DRFMT_PACKED; - spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; break; case 32: fmt = SPDIFRX_DRFMT_LEFT; - spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; break; default: dev_err(&spdifrx->pdev->dev, "Unexpected data format\n"); return -EINVAL; } + /* + * Set buswidth to 4 bytes for all data formats. + * Packed format: transfer 2 x 2 bytes samples + * Left format: transfer 1 x 3 bytes samples + 1 dummy byte + */ + spdifrx->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; snd_soc_dai_init_dma_data(cpu_dai, NULL, &spdifrx->dma_params); return regmap_update_bits(spdifrx->regmap, STM32_SPDIFRX_CR, -- 1.9.1