From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754608AbaKSMuH (ORCPT ); Wed, 19 Nov 2014 07:50:07 -0500 Received: from mail-bn1on0116.outbound.protection.outlook.com ([157.56.110.116]:62272 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752512AbaKSMuF (ORCPT ); Wed, 19 Nov 2014 07:50:05 -0500 From: Zidan Wang To: CC: , , , , , , , , , Zidan Wang Subject: [alsa-devel][PATCH] ASoC: wm8960: Add shared_lrclk and capless to device tree Date: Wed, 19 Nov 2014 20:36:08 +0800 Message-ID: <1416400568-7512-1-git-send-email-b50113@freescale.com> X-Mailer: git-send-email 1.9.1 X-EOPAttributedMessage: 0 Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=B50113@freescale.com; X-Forefront-Antispam-Report: CIP:192.88.168.50;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(199003)(189002)(107046002)(64706001)(229853001)(20776003)(2351001)(104016003)(110136001)(33646002)(36756003)(99396003)(47776003)(120916001)(88136002)(87936001)(102836001)(87286001)(48376002)(97736003)(104166001)(85426001)(46102003)(68736004)(62966003)(50226001)(4396001)(50986999)(106466001)(89996001)(77156002)(84676001)(31966008)(86362001)(50466002)(92726001)(93916002)(105606002)(19580405001)(19580395003)(44976005)(95666004)(21056001)(92566001)(6806004)(42262002);DIR:OUT;SFP:1102;SCL:1;SRVR:DM2PR0301MB1262;H:tx30smr01.am.freescale.net;FPR:;MLV:sfv;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; MIME-Version: 1.0 Content-Type: text/plain X-Microsoft-Antispam: UriScan:;UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB1262; X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB1262; X-Forefront-PRVS: 04004D94E2 X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB1262; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:DM2PR0301MB0608; X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org wm8960 codec has a wm8960_data struct which has two fields shared_lrclk and capless. The wm8960_data is get from platform_data and it is reasonable to set it from device tree when platform_data is null. And when shared_lrclk is set, LRCM will be enabled. But the following software reset in wm8960_probe will reset it to the default state. So LRCM operation should after software reset. Signed-off-by: Zidan Wang --- sound/soc/codecs/wm8960.c | 49 ++++++++++++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 18 deletions(-) diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 4dc4e85..1d56c90 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -125,6 +125,7 @@ struct wm8960_priv { struct snd_soc_dapm_widget *out3; bool deemph; int playback_fs; + struct wm8960_data pdata; }; #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0) @@ -961,17 +962,13 @@ static int wm8960_resume(struct snd_soc_codec *codec) static int wm8960_probe(struct snd_soc_codec *codec) { struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec); - struct wm8960_data *pdata = dev_get_platdata(codec->dev); + struct wm8960_data *pdata = &wm8960->pdata; int ret; - wm8960->set_bias_level = wm8960_set_bias_level_out3; - - if (!pdata) { - dev_warn(codec->dev, "No platform data supplied\n"); - } else { - if (pdata->capless) - wm8960->set_bias_level = wm8960_set_bias_level_capless; - } + if (pdata->capless) + wm8960->set_bias_level = wm8960_set_bias_level_capless; + else + wm8960->set_bias_level = wm8960_set_bias_level_out3; ret = wm8960_reset(codec); if (ret < 0) { @@ -979,6 +976,14 @@ static int wm8960_probe(struct snd_soc_codec *codec) return ret; } + if (pdata->shared_lrclk) { + ret = snd_soc_update_bits(codec, WM8960_ADDCTL2, 0x4, 0x4); + if (ret < 0) { + dev_err(codec->dev, "Failed to enable LRCM: %d\n", ret); + return ret; + } + } + wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY); /* Latch the update bits */ @@ -1029,6 +1034,18 @@ static const struct regmap_config wm8960_regmap = { .volatile_reg = wm8960_volatile, }; +static void wm8960_set_pdata_from_of(struct i2c_client *i2c, + struct wm8960_data *pdata) +{ + const struct device_node *np = i2c->dev.of_node; + + if (of_property_read_bool(np, "capless")) + pdata->capless = true; + + if (of_property_read_bool(np, "shared_lrclk")) + pdata->shared_lrclk = true; +} + static int wm8960_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -1038,6 +1055,7 @@ static int wm8960_i2c_probe(struct i2c_client *i2c, wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv), GFP_KERNEL); + if (wm8960 == NULL) return -ENOMEM; @@ -1045,15 +1063,10 @@ static int wm8960_i2c_probe(struct i2c_client *i2c, if (IS_ERR(wm8960->regmap)) return PTR_ERR(wm8960->regmap); - if (pdata && pdata->shared_lrclk) { - ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, - 0x4, 0x4); - if (ret != 0) { - dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", - ret); - return ret; - } - } + if (pdata) + memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data)); + else if (i2c->dev.of_node) + wm8960_set_pdata_from_of(i2c, &wm8960->pdata); i2c_set_clientdata(i2c, wm8960); -- 1.9.1