From patchwork Fri Feb 8 10:49:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier MOYSAN X-Patchwork-Id: 10802737 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CA61917F0 for ; Fri, 8 Feb 2019 10:50:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4D6E2DA64 for ; Fri, 8 Feb 2019 10:50:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A8D002DD77; Fri, 8 Feb 2019 10:50:25 +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=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham 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 07A1C2DA64 for ; Fri, 8 Feb 2019 10:50:18 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id F1CB5267A00; Fri, 8 Feb 2019 11:50:08 +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 A0DB12679F2; Fri, 8 Feb 2019 11:50:05 +0100 (CET) Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [62.209.51.94]) by alsa0.perex.cz (Postfix) with ESMTP id 9B948267437 for ; Fri, 8 Feb 2019 11:49:59 +0100 (CET) Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x18AkGbf006838; Fri, 8 Feb 2019 11:49:59 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2qfv9nkb44-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 08 Feb 2019 11:49:59 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B4A2331; Fri, 8 Feb 2019 10:49:58 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas24.st.com [10.75.90.94]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2EDDA28CA; Fri, 8 Feb 2019 10:49:58 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by Safex1hubcas24.st.com (10.75.90.94) with Microsoft SMTP Server (TLS) id 14.3.361.1; Fri, 8 Feb 2019 11:49:58 +0100 Received: from localhost (10.201.23.16) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Fri, 8 Feb 2019 11:49:56 +0100 From: Olivier Moysan To: , , , , , , , , , , , , Date: Fri, 8 Feb 2019 11:49:53 +0100 Message-ID: <1549622994-13810-2-git-send-email-olivier.moysan@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1549622994-13810-1-git-send-email-olivier.moysan@st.com> References: <1549622994-13810-1-git-send-email-olivier.moysan@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.16] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-08_07:, , signatures=0 Subject: [alsa-devel] [PATCH 1/2] ASoC: stm32: i2s: add power management 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 Add suspend and resume sleep callbacks, to support system low power modes. Signed-off-by: Olivier Moysan --- sound/soc/stm/stm32_i2s.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-) diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c index 6d0bf78d114d..dbe23a709d24 100644 --- a/sound/soc/stm/stm32_i2s.c +++ b/sound/soc/stm/stm32_i2s.c @@ -186,8 +186,9 @@ enum i2s_datlen { #define STM32_I2S_IS_SLAVE(x) ((x)->ms_flg == I2S_MS_SLAVE) /** + * struct stm32_i2s_data - private data of I2S * @regmap_conf: I2S register map configuration pointer - * @egmap: I2S register map pointer + * @regmap: I2S register map pointer * @pdev: device data pointer * @dai_drv: DAI driver pointer * @dma_data_tx: dma configuration data for tx channel @@ -596,8 +597,8 @@ static int stm32_i2s_trigger(struct snd_pcm_substream *substream, int cmd, return ret; } - ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG, - I2S_CR1_CSTART, I2S_CR1_CSTART); + ret = regmap_write_bits(i2s->regmap, STM32_I2S_CR1_REG, + I2S_CR1_CSTART, I2S_CR1_CSTART); if (ret < 0) { dev_err(cpu_dai->dev, "Error %d starting I2S\n", ret); return ret; @@ -703,6 +704,7 @@ static const struct regmap_config stm32_h7_i2s_regmap_conf = { .volatile_reg = stm32_i2s_volatile_reg, .writeable_reg = stm32_i2s_writeable_reg, .fast_io = true, + .cache_type = REGCACHE_FLAT, }; static const struct snd_soc_dai_ops stm32_i2s_pcm_dai_ops = { @@ -929,10 +931,35 @@ static int stm32_i2s_remove(struct platform_device *pdev) MODULE_DEVICE_TABLE(of, stm32_i2s_ids); +#ifdef CONFIG_PM_SLEEP +static int stm32_i2s_suspend(struct device *dev) +{ + struct stm32_i2s_data *i2s = dev_get_drvdata(dev); + + regcache_cache_only(i2s->regmap, true); + regcache_mark_dirty(i2s->regmap); + + return 0; +} + +static int stm32_i2s_resume(struct device *dev) +{ + struct stm32_i2s_data *i2s = dev_get_drvdata(dev); + + regcache_cache_only(i2s->regmap, false); + return regcache_sync(i2s->regmap); +} +#endif /* CONFIG_PM_SLEEP */ + +static const struct dev_pm_ops stm32_i2s_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(stm32_i2s_suspend, stm32_i2s_resume) +}; + static struct platform_driver stm32_i2s_driver = { .driver = { .name = "st,stm32-i2s", .of_match_table = stm32_i2s_ids, + .pm = &stm32_i2s_pm_ops, }, .probe = stm32_i2s_probe, .remove = stm32_i2s_remove,