From patchwork Tue Dec 12 22:43:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 10108403 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EC1DB602C2 for ; Tue, 12 Dec 2017 22:44:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DBCA7284FC for ; Tue, 12 Dec 2017 22:44:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D044B287B3; Tue, 12 Dec 2017 22:44:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,T_DKIM_INVALID autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC56E284FC for ; Tue, 12 Dec 2017 22:44:55 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 056622677D1; Tue, 12 Dec 2017 23:43:26 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 1E2E52677B8; Tue, 12 Dec 2017 23:43:21 +0100 (CET) Received: from lelnx194.ext.ti.com (lelnx194.ext.ti.com [198.47.27.80]) by alsa0.perex.cz (Postfix) with ESMTP id AB7DA2677B2 for ; Tue, 12 Dec 2017 23:43:14 +0100 (CET) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id vBCMhEa1029456; Tue, 12 Dec 2017 16:43:14 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1513118594; bh=3rV4htqzVVYzvi8YbIt0nLE6u0Pw1MW9Hj4F7jP3tvg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=GYeh80Ro/l08280EZR81QCrPHLDUM2R3r2t7WgIpdDBXdyLnGxxu57tNOd6h9XN16 Xx46oj4Xm+ommckexg+q9W7sdC56ba81RQmY0WkUNm3zBIgaZDuK8YP4J416+3jqwX Ed3Rjho1k2J9qh1F5ptqVmUljIsl4kofj52b3dlA= Received: from DLEE115.ent.ti.com (dlee115.ent.ti.com [157.170.170.26]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id vBCMhEO1024029; Tue, 12 Dec 2017 16:43:14 -0600 Received: from DLEE107.ent.ti.com (157.170.170.37) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34; Tue, 12 Dec 2017 16:43:13 -0600 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE107.ent.ti.com (157.170.170.37) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.845.34 via Frontend Transport; Tue, 12 Dec 2017 16:43:13 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id vBCMhDTt019743; Tue, 12 Dec 2017 16:43:13 -0600 Received: from localhost (uda0226330.dhcp.ti.com [128.247.59.223]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id vBCMhDx14900; Tue, 12 Dec 2017 16:43:13 -0600 (CST) From: "Andrew F. Davis" To: Liam Girdwood , Mark Brown Date: Tue, 12 Dec 2017 16:43:09 -0600 Message-ID: <20171212224311.24045-8-afd@ti.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171212224311.24045-1-afd@ti.com> References: <20171212224311.24045-1-afd@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, "Andrew F . Davis" Subject: [alsa-devel] [PATCH 08/10] ASoC: tlv320aic32x4: Use snd_soc_update_bits() in aic32x4_hw_params() X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Make the code easier to read by using snd_soc_update_bits() over read/modify/write sequences. Also use separate per-register variables instead of re-using "data". This can prevent accidental over-writing and makes it clear for which register each bit value is intended. Signed-off-by: Andrew F. Davis --- sound/soc/codecs/tlv320aic32x4.c | 90 ++++++++++++++++++++-------------------- sound/soc/codecs/tlv320aic32x4.h | 8 ++++ 2 files changed, 54 insertions(+), 44 deletions(-) diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index 0dffbe8a2666..7a570afac8df 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -660,7 +660,8 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_codec *codec = dai->codec; struct aic32x4_priv *aic32x4 = snd_soc_codec_get_drvdata(codec); - u8 data; + u8 iface1_reg = 0; + u8 dacsetup_reg = 0; int i; i = aic32x4_get_divs(aic32x4->sysclk, params_rate(params)); @@ -669,87 +670,88 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream, return i; } - /* Use PLL as CODEC_CLKIN and DAC_MOD_CLK as BDIV_CLKIN */ - snd_soc_write(codec, AIC32X4_CLKMUX, AIC32X4_CODEC_CLKIN_PLL); - snd_soc_write(codec, AIC32X4_IFACE3, AIC32X4_DACMOD2BCLK); + /* MCLK as PLL_CLKIN */ + snd_soc_update_bits(codec, AIC32X4_CLKMUX, AIC32X4_PLL_CLKIN_MASK, + AIC32X4_PLL_CLKIN_MCLK << AIC32X4_PLL_CLKIN_SHIFT); + /* PLL as CODEC_CLKIN */ + snd_soc_update_bits(codec, AIC32X4_CLKMUX, AIC32X4_CODEC_CLKIN_MASK, + AIC32X4_CODEC_CLKIN_PLL << AIC32X4_CODEC_CLKIN_SHIFT); + /* DAC_MOD_CLK as BDIV_CLKIN */ + snd_soc_update_bits(codec, AIC32X4_IFACE3, AIC32X4_BDIVCLK_MASK, + AIC32X4_DACMOD2BCLK << AIC32X4_BDIVCLK_SHIFT); - /* We will fix R value to 1 and will make P & J=K.D as varialble */ - data = snd_soc_read(codec, AIC32X4_PLLPR); - data &= ~(7 << 4); - snd_soc_write(codec, AIC32X4_PLLPR, - (data | (aic32x4_divs[i].p_val << 4) | 0x01)); + /* We will fix R value to 1 and will make P & J=K.D as variable */ + snd_soc_update_bits(codec, AIC32X4_PLLPR, AIC32X4_PLL_R_MASK, 0x01); + /* PLL P value */ + snd_soc_update_bits(codec, AIC32X4_PLLPR, AIC32X4_PLL_P_MASK, + aic32x4_divs[i].p_val << AIC32X4_PLL_P_SHIFT); + + /* PLL J value */ snd_soc_write(codec, AIC32X4_PLLJ, aic32x4_divs[i].pll_j); + /* PLL D value */ snd_soc_write(codec, AIC32X4_PLLDMSB, (aic32x4_divs[i].pll_d >> 8)); - snd_soc_write(codec, AIC32X4_PLLDLSB, - (aic32x4_divs[i].pll_d & 0xff)); + snd_soc_write(codec, AIC32X4_PLLDLSB, (aic32x4_divs[i].pll_d & 0xff)); /* NDAC divider value */ - data = snd_soc_read(codec, AIC32X4_NDAC); - data &= ~(0x7f); - snd_soc_write(codec, AIC32X4_NDAC, data | aic32x4_divs[i].ndac); + snd_soc_update_bits(codec, AIC32X4_NDAC, + AIC32X4_NDAC_MASK, aic32x4_divs[i].ndac); /* MDAC divider value */ - data = snd_soc_read(codec, AIC32X4_MDAC); - data &= ~(0x7f); - snd_soc_write(codec, AIC32X4_MDAC, data | aic32x4_divs[i].mdac); + snd_soc_update_bits(codec, AIC32X4_MDAC, + AIC32X4_MDAC_MASK, aic32x4_divs[i].mdac); /* DOSR MSB & LSB values */ snd_soc_write(codec, AIC32X4_DOSRMSB, aic32x4_divs[i].dosr >> 8); - snd_soc_write(codec, AIC32X4_DOSRLSB, - (aic32x4_divs[i].dosr & 0xff)); + snd_soc_write(codec, AIC32X4_DOSRLSB, (aic32x4_divs[i].dosr & 0xff)); /* NADC divider value */ - data = snd_soc_read(codec, AIC32X4_NADC); - data &= ~(0x7f); - snd_soc_write(codec, AIC32X4_NADC, data | aic32x4_divs[i].nadc); + snd_soc_update_bits(codec, AIC32X4_NADC, + AIC32X4_NADC_MASK, aic32x4_divs[i].nadc); /* MADC divider value */ - data = snd_soc_read(codec, AIC32X4_MADC); - data &= ~(0x7f); - snd_soc_write(codec, AIC32X4_MADC, data | aic32x4_divs[i].madc); + snd_soc_update_bits(codec, AIC32X4_MADC, + AIC32X4_MADC_MASK, aic32x4_divs[i].madc); /* AOSR value */ snd_soc_write(codec, AIC32X4_AOSR, aic32x4_divs[i].aosr); /* BCLK N divider */ - data = snd_soc_read(codec, AIC32X4_BCLKN); - data &= ~(0x7f); - snd_soc_write(codec, AIC32X4_BCLKN, data | aic32x4_divs[i].blck_N); + snd_soc_update_bits(codec, AIC32X4_BCLKN, + AIC32X4_BCLK_MASK, aic32x4_divs[i].blck_N); - data = snd_soc_read(codec, AIC32X4_IFACE1); - data = data & ~(3 << 4); switch (params_width(params)) { case 16: - data |= (AIC32X4_WORD_LEN_16BITS << - AIC32X4_IFACE1_DATALEN_SHIFT); + iface1_reg |= (AIC32X4_WORD_LEN_16BITS << + AIC32X4_IFACE1_DATALEN_SHIFT); break; case 20: - data |= (AIC32X4_WORD_LEN_20BITS << - AIC32X4_IFACE1_DATALEN_SHIFT); + iface1_reg |= (AIC32X4_WORD_LEN_20BITS << + AIC32X4_IFACE1_DATALEN_SHIFT); break; case 24: - data |= (AIC32X4_WORD_LEN_24BITS << - AIC32X4_IFACE1_DATALEN_SHIFT); + iface1_reg |= (AIC32X4_WORD_LEN_24BITS << + AIC32X4_IFACE1_DATALEN_SHIFT); break; case 32: - data |= (AIC32X4_WORD_LEN_32BITS << - AIC32X4_IFACE1_DATALEN_SHIFT); + iface1_reg |= (AIC32X4_WORD_LEN_32BITS << + AIC32X4_IFACE1_DATALEN_SHIFT); break; } - snd_soc_write(codec, AIC32X4_IFACE1, data); + snd_soc_update_bits(codec, AIC32X4_IFACE1, + AIC32X4_IFACE1_DATALEN_MASK, iface1_reg); if (params_channels(params) == 1) { - data = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2LCHN; + dacsetup_reg = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2LCHN; } else { if (aic32x4->swapdacs) - data = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2RCHN; + dacsetup_reg = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2RCHN; else - data = AIC32X4_LDAC2LCHN | AIC32X4_RDAC2RCHN; + dacsetup_reg = AIC32X4_LDAC2LCHN | AIC32X4_RDAC2RCHN; } - snd_soc_update_bits(codec, AIC32X4_DACSETUP, AIC32X4_DAC_CHAN_MASK, - data); + snd_soc_update_bits(codec, AIC32X4_DACSETUP, + AIC32X4_DAC_CHAN_MASK, dacsetup_reg); return 0; } diff --git a/sound/soc/codecs/tlv320aic32x4.h b/sound/soc/codecs/tlv320aic32x4.h index 8408ecf2cf95..a30c239fdf43 100644 --- a/sound/soc/codecs/tlv320aic32x4.h +++ b/sound/soc/codecs/tlv320aic32x4.h @@ -108,21 +108,29 @@ int aic32x4_remove(struct device *dev); /* AIC32X4_PLLPR */ #define AIC32X4_PLLEN BIT(7) +#define AIC32X4_PLL_P_MASK GENMASK(6, 4) +#define AIC32X4_PLL_P_SHIFT (4) +#define AIC32X4_PLL_R_MASK GENMASK(3, 0) /* AIC32X4_NDAC */ #define AIC32X4_NDACEN BIT(7) +#define AIC32X4_NDAC_MASK GENMASK(6, 0) /* AIC32X4_MDAC */ #define AIC32X4_MDACEN BIT(7) +#define AIC32X4_MDAC_MASK GENMASK(6, 0) /* AIC32X4_NADC */ #define AIC32X4_NADCEN BIT(7) +#define AIC32X4_NADC_MASK GENMASK(6, 0) /* AIC32X4_MADC */ #define AIC32X4_MADCEN BIT(7) +#define AIC32X4_MADC_MASK GENMASK(6, 0) /* AIC32X4_BCLKN */ #define AIC32X4_BCLKEN BIT(7) +#define AIC32X4_BCLK_MASK GENMASK(6, 0) /* AIC32X4_IFACE1 */ #define AIC32X4_IFACE1_DATATYPE_MASK GENMASK(7, 6)