From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94DADC4360F for ; Thu, 4 Apr 2019 03:56:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CFDB20855 for ; Thu, 4 Apr 2019 03:56:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728985AbfDDD4h (ORCPT ); Wed, 3 Apr 2019 23:56:37 -0400 Received: from regular1.263xmail.com ([211.150.70.197]:57814 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728933AbfDDD4h (ORCPT ); Wed, 3 Apr 2019 23:56:37 -0400 Received: from sugar.zhang?rock-chips.com (unknown [192.168.167.192]) by regular1.263xmail.com (Postfix) with ESMTP id 44C9368A; Thu, 4 Apr 2019 11:56:35 +0800 (CST) X-263anti-spam: KSV:0;BIG:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ADDR-CHECKED4: 1 X-ABS-CHECKED: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P27186T140355238283008S1554350192612308_; Thu, 04 Apr 2019 11:56:34 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: <42b942c1645e5b1a64fa1c8b90af1a18> X-RL-SENDER: sugar.zhang@rock-chips.com X-SENDER: zxg@rock-chips.com X-LOGIN-NAME: sugar.zhang@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Sugar Zhang To: heiko@sntech.de, broonie@kernel.org Cc: Liam Girdwood , Jaroslav Kysela , Takashi Iwai , alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Sugar Zhang Subject: [PATCH v1 10/12] ASoC: rockchip: pdm: adjust waterlevel in frame unit Date: Thu, 4 Apr 2019 11:56:29 +0800 Message-Id: <1554350189-24318-1-git-send-email-sugar.zhang@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1554298856-59028-1-git-send-email-sugar.zhang@rock-chips.com> References: <1554298856-59028-1-git-send-email-sugar.zhang@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch make the waterlevel more reasonable, because the pdm controller share the single FIFO(128 entries) with each channel. adjust waterlevel in frame to meet the vad or dma frames request. Signed-off-by: Sugar Zhang --- sound/soc/rockchip/rockchip_pdm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index 3e1c5fd..955cdc2 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -255,8 +255,9 @@ static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream, regmap_update_bits(pdm->regmap, PDM_CTRL0, PDM_PATH_MSK | PDM_VDW_MSK, val); + /* all channels share the single FIFO */ regmap_update_bits(pdm->regmap, PDM_DMA_CTRL, PDM_DMA_RDL_MSK, - PDM_DMA_RDL(16)); + PDM_DMA_RDL(8 * params_channels(params))); return 0; } -- 2.7.4