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=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 62F77C2D0A8 for ; Wed, 23 Sep 2020 13:26:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0538E221E7 for ; Wed, 23 Sep 2020 13:26:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="M/d6XM2s" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726574AbgIWN0Z (ORCPT ); Wed, 23 Sep 2020 09:26:25 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:42294 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726550AbgIWN0Z (ORCPT ); Wed, 23 Sep 2020 09:26:25 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 08NDQCQD079389; Wed, 23 Sep 2020 08:26:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1600867572; bh=ZKiXsCyFH49FaSg68E/xdxS8xr974JRMhnT+8/P7hzA=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=M/d6XM2swew6MCehSRqLwp9wEBofLOVGPt/sGTU0TnZb0HMHMVOFcJBUFeqF9WIKG eeRl65d3f1xOtjZ7jzxzzbbmAP51x8wqBf3LpZNTR1nG2icXEUwVIbWEfPGLkl6/hb SPNv8+lPV47717IGjqmG9C17b4kmA66n0VYNgBcY= Received: from DFLE112.ent.ti.com (dfle112.ent.ti.com [10.64.6.33]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 08NDQBDt101551 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 23 Sep 2020 08:26:12 -0500 Received: from DFLE105.ent.ti.com (10.64.6.26) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Wed, 23 Sep 2020 08:26:11 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Wed, 23 Sep 2020 08:26:11 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 08NDQBMk072993; Wed, 23 Sep 2020 08:26:11 -0500 From: Dan Murphy To: , , , CC: , , , Dan Murphy Subject: [PATCH 2/6] ASoC: tas2770: Add shutdown capability via a GPIO Date: Wed, 23 Sep 2020 08:25:56 -0500 Message-ID: <20200923132600.10652-2-dmurphy@ti.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200923132600.10652-1-dmurphy@ti.com> References: <20200923132600.10652-1-dmurphy@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the hardware shutdown mechanism to shutdown and wake up the device via a GPIO. Signed-off-by: Dan Murphy --- sound/soc/codecs/tas2770.c | 53 ++++++++++++++++++++++++++++---------- sound/soc/codecs/tas2770.h | 1 + 2 files changed, 40 insertions(+), 14 deletions(-) diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c index 386aaa11fa08..9f7363927c50 100644 --- a/sound/soc/codecs/tas2770.c +++ b/sound/soc/codecs/tas2770.c @@ -79,28 +79,42 @@ static int tas2770_set_bias_level(struct snd_soc_component *component, #ifdef CONFIG_PM static int tas2770_codec_suspend(struct snd_soc_component *component) { - int ret; + struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); + int ret = 0; - ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, - TAS2770_PWR_CTRL_MASK, - TAS2770_PWR_CTRL_SHUTDOWN); - if (ret < 0) - return ret; + if (tas2770->sdz_gpio) { + gpiod_set_value_cansleep(tas2770->sdz_gpio, 0); + } else { + ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, + TAS2770_PWR_CTRL_MASK, + TAS2770_PWR_CTRL_SHUTDOWN); + if (ret < 0) + return ret; - return 0; + ret = 0; + } + + return ret; } static int tas2770_codec_resume(struct snd_soc_component *component) { - int ret; + struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component); + int ret = 0; - ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, - TAS2770_PWR_CTRL_MASK, - TAS2770_PWR_CTRL_ACTIVE); - if (ret < 0) - return ret; + if (tas2770->sdz_gpio) { + gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); + } else { + ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, + TAS2770_PWR_CTRL_MASK, + TAS2770_PWR_CTRL_ACTIVE); + if (ret < 0) + return ret; - return 0; + ret = 0; + } + + return ret; } #else #define tas2770_codec_suspend NULL @@ -498,6 +512,9 @@ static int tas2770_codec_probe(struct snd_soc_component *component) tas2770->component = component; + if (tas2770->sdz_gpio) + gpiod_set_value_cansleep(tas2770->sdz_gpio, 1); + tas2770_reset(tas2770); return 0; @@ -650,6 +667,14 @@ static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) tas2770->v_sense_slot = 2; } + tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); + if (IS_ERR(tas2770->sdz_gpio)) { + if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + tas2770->sdz_gpio = NULL; + } + return 0; } diff --git a/sound/soc/codecs/tas2770.h b/sound/soc/codecs/tas2770.h index 07e3556fc702..b3fc4a487033 100644 --- a/sound/soc/codecs/tas2770.h +++ b/sound/soc/codecs/tas2770.h @@ -134,6 +134,7 @@ struct tas2770_priv { int power_state; int asi_format; struct gpio_desc *reset_gpio; + struct gpio_desc *sdz_gpio; int sampling_rate; int channel_size; int slot_width; -- 2.28.0