From patchwork Fri Dec 13 06:43:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 3338611 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 076709F44E for ; Fri, 13 Dec 2013 06:45:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 25F4E207DD for ; Fri, 13 Dec 2013 06:44:59 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 33844207D6 for ; Fri, 13 Dec 2013 06:44:58 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VrMTL-0006ET-Gk; Fri, 13 Dec 2013 06:43:40 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VrMT2-0006B8-Cp; Fri, 13 Dec 2013 06:43:20 +0000 Received: from mail-db8lp0189.outbound.messaging.microsoft.com ([213.199.154.189] helo=db8outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VrMSb-00067j-RK for linux-arm-kernel@lists.infradead.org; Fri, 13 Dec 2013 06:42:55 +0000 Received: from mail77-db8-R.bigfish.com (10.174.8.239) by DB8EHSOBE015.bigfish.com (10.174.4.78) with Microsoft SMTP Server id 14.1.225.22; Fri, 13 Dec 2013 06:42:31 +0000 Received: from mail77-db8 (localhost [127.0.0.1]) by mail77-db8-R.bigfish.com (Postfix) with ESMTP id F268ED400B0; Fri, 13 Dec 2013 06:42:30 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah1fc6hzz1de098h8275dh1de097hz2dh87h2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dc1h1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h2327h2336h1151h1155h) X-FB-DOMAIN-IP-MATCH: fail Received: from mail77-db8 (localhost.localdomain [127.0.0.1]) by mail77-db8 (MessageSwitch) id 1386916947948190_19428; Fri, 13 Dec 2013 06:42:27 +0000 (UTC) Received: from DB8EHSMHS022.bigfish.com (unknown [10.174.8.225]) by mail77-db8.bigfish.com (Postfix) with ESMTP id D82373C0047; Fri, 13 Dec 2013 06:42:27 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB8EHSMHS022.bigfish.com (10.174.4.32) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 13 Dec 2013 06:42:27 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.158.2; Fri, 13 Dec 2013 06:42:26 +0000 Received: from S2101-09.ap.freescale.net ([10.192.185.200]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id rBD6gMaa031539; Thu, 12 Dec 2013 23:42:23 -0700 From: Shawn Guo To: Subject: [PATCH 1/2] ASoC: sgtl5000: read chip revision for once Date: Fri, 13 Dec 2013 14:43:02 +0800 Message-ID: <1386916983-27832-1-git-send-email-shawn.guo@linaro.org> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-OriginatorOrg: sigmatel.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131213_014254_130067_15F1A264 X-CRM114-Status: GOOD ( 10.37 ) X-Spam-Score: 0.0 (/) Cc: Mark Brown , Xiubo Li , linux-arm-kernel@lists.infradead.org, Shawn Guo X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY, UNRESOLVED_TEMPLATE autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Store chip revision in struct sgtl5000_priv when sgtl5000_i2c_probe() reads it out from register, so that we can use it in sgtl5000_enable_regulators() with no need to read register again. Signed-off-by: Shawn Guo --- sound/soc/codecs/sgtl5000.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 1f4093f..bd291d2 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -115,6 +115,7 @@ struct sgtl5000_priv { struct ldo_regulator *ldo; struct regmap *regmap; struct clk *mclk; + int revision; }; /* @@ -1300,9 +1301,7 @@ static int sgtl5000_replace_vddd_with_ldo(struct snd_soc_codec *codec) static int sgtl5000_enable_regulators(struct snd_soc_codec *codec) { - int reg; int ret; - int rev; int i; int external_vddd = 0; struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec); @@ -1332,14 +1331,7 @@ static int sgtl5000_enable_regulators(struct snd_soc_codec *codec) * workaround for revision 0x11 and later, * roll back to use internal LDO */ - - ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, ®); - if (ret) - goto err_regulator_disable; - - rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT; - - if (external_vddd && rev >= 0x11) { + if (external_vddd && sgtl5000->revision >= 0x11) { /* disable all regulator first */ regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies), sgtl5000->supplies); @@ -1362,9 +1354,6 @@ static int sgtl5000_enable_regulators(struct snd_soc_codec *codec) return 0; -err_regulator_disable: - regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies), - sgtl5000->supplies); err_regulator_free: regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies), sgtl5000->supplies); @@ -1566,6 +1555,7 @@ static int sgtl5000_i2c_probe(struct i2c_client *client, rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT; dev_info(&client->dev, "sgtl5000 revision 0x%x\n", rev); + sgtl5000->revision = rev; i2c_set_clientdata(client, sgtl5000);