From patchwork Thu Mar 17 08:28:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 12783697 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A793C43217 for ; Thu, 17 Mar 2022 08:28:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229776AbiCQIaD (ORCPT ); Thu, 17 Mar 2022 04:30:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231160AbiCQIaA (ORCPT ); Thu, 17 Mar 2022 04:30:00 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 778B8DA6F4 for ; Thu, 17 Mar 2022 01:28:43 -0700 (PDT) Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nUlUt-000693-4g; Thu, 17 Mar 2022 09:28:39 +0100 Received: from sha by dude02.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nUlUm-0027UC-Vw; Thu, 17 Mar 2022 09:28:32 +0100 From: Sascha Hauer To: alsa-devel@alsa-project.org Cc: Xiubo Li , Fabio Estevam , Shengjiu Wang , kernel@pengutronix.de, Vinod Koul , NXP Linux Team , dmaengine@vger.kernel.org, Sascha Hauer Subject: [PATCH 13/19] ASoC: fsl_micfil: Drop get_pdm_clk() Date: Thu, 17 Mar 2022 09:28:12 +0100 Message-Id: <20220317082818.503143-14-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220317082818.503143-1-s.hauer@pengutronix.de> References: <20220317082818.503143-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::28 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: dmaengine@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org get_pdm_clk() calculates the PDM clock based on the quality setting, but really the PDM clock is independent of the quality, it's always rate * 4 * micfil->osr. Just drop the function and do the calculation in the caller. Signed-off-by: Sascha Hauer --- sound/soc/fsl/fsl_micfil.c | 38 +------------------------------------- 1 file changed, 1 insertion(+), 37 deletions(-) diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c index 48054b9bd4bb2..8dadb824a94ff 100644 --- a/sound/soc/fsl/fsl_micfil.c +++ b/sound/soc/fsl/fsl_micfil.c @@ -110,42 +110,6 @@ static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = { snd_soc_get_enum_double, snd_soc_put_enum_double), }; -static inline int get_pdm_clk(struct fsl_micfil *micfil, - unsigned int rate) -{ - u32 ctrl2_reg; - int qsel; - int bclk; - int osr = MICFIL_OSR_DEFAULT; - - regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg); - qsel = FIELD_GET(MICFIL_CTRL2_QSEL, ctrl2_reg); - - switch (qsel) { - case MICFIL_QSEL_HIGH_QUALITY: - bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */ - break; - case MICFIL_QSEL_MEDIUM_QUALITY: - case MICFIL_QSEL_VLOW0_QUALITY: - bclk = rate * 4 * osr * 1; /* kfactor = 1 */ - break; - case MICFIL_QSEL_LOW_QUALITY: - case MICFIL_QSEL_VLOW1_QUALITY: - bclk = rate * 2 * osr * 2; /* kfactor = 2 */ - break; - case MICFIL_QSEL_VLOW2_QUALITY: - bclk = rate * osr * 4; /* kfactor = 4 */ - break; - default: - dev_err(&micfil->pdev->dev, - "Please make sure you select a valid quality.\n"); - bclk = -1; - break; - } - - return bclk; -} - static inline int get_clk_div(struct fsl_micfil *micfil, unsigned int rate) { @@ -154,7 +118,7 @@ static inline int get_clk_div(struct fsl_micfil *micfil, mclk_rate = clk_get_rate(micfil->mclk); - clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2); + clk_div = mclk_rate / (rate * micfil->osr * 8); return clk_div; }