From patchwork Fri Sep 2 15:52:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charles Keepax X-Patchwork-Id: 9311401 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 31191607D2 for ; Fri, 2 Sep 2016 16:27:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2214028365 for ; Fri, 2 Sep 2016 16:27:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1681129813; Fri, 2 Sep 2016 16:27:03 +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=-1.9 required=2.0 tests=BAYES_00, 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 12F9C28365 for ; Fri, 2 Sep 2016 16:27:02 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 3C5EB26798F; Fri, 2 Sep 2016 18:27:01 +0200 (CEST) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 56D602679BB; Fri, 2 Sep 2016 18:09:28 +0200 (CEST) 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 C2E1426772F; Fri, 2 Sep 2016 18:09:26 +0200 (CEST) Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by alsa0.perex.cz (Postfix) with ESMTP id 1E105267737 for ; Fri, 2 Sep 2016 17:52:54 +0200 (CEST) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u82FnPmE004610; Fri, 2 Sep 2016 10:52:54 -0500 Authentication-Results: ppops.net; spf=none smtp.mailfrom=ckeepax@opensource.wolfsonmicro.com Received: from mail2.cirrus.com (mail1.cirrus.com [141.131.3.20]) by mx0a-001ae601.pphosted.com with ESMTP id 256e6frucw-1; Fri, 02 Sep 2016 10:52:49 -0500 Received: from EX17.ad.cirrus.com (unknown [172.20.9.81]) by mail2.cirrus.com (Postfix) with ESMTP id 5F9D2611CE65; Fri, 2 Sep 2016 10:52:49 -0500 (CDT) Received: from imbe.wolfsonmicro.main (198.61.95.81) by EX17.ad.cirrus.com (172.20.9.81) with Microsoft SMTP Server id 14.3.301.0; Fri, 2 Sep 2016 16:52:48 +0100 Received: from algalon.wolfsonmicro.main ([172.22.20.24]) by imbe.wolfsonmicro.main (8.14.4/8.14.4) with ESMTP id u82FqWdK027712; Fri, 2 Sep 2016 16:52:36 +0100 From: Charles Keepax To: , Date: Fri, 2 Sep 2016 16:52:46 +0100 Message-ID: <1472831568-466-5-git-send-email-ckeepax@opensource.wolfsonmicro.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1472831568-466-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> References: <1472831568-466-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> MIME-Version: 1.0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1609020211 Cc: alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com, lgirdwood@gmail.com, s.nawrocki@samsung.com, linux-kernel@vger.kernel.org Subject: [alsa-devel] [PATCH 4/6] mfd: arizona: Add gating of external MCLKn clocks 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 From: Sylwester Nawrocki This patch adds requesting of the clocks supplied on MCLK1, MCLK2 pins, gating of the 32k clock is added to the arizona_clk32k_enable(), arizona_clk32k_disable() helpers. It's a temporary change until the CODEC's clock controller gets exposed through the clk API and is helpful for board configurations where the MCLK clocks are not provided by always on oscillators. Signed-off-by: Sylwester Nawrocki Signed-off-by: Charles Keepax --- drivers/mfd/arizona-core.c | 30 ++++++++++++++++++++++++++++-- include/linux/mfd/arizona/core.h | 9 +++++++++ 2 files changed, 37 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c index e4f97b3..4fa0fae 100644 --- a/drivers/mfd/arizona-core.c +++ b/drivers/mfd/arizona-core.c @@ -10,6 +10,7 @@ * published by the Free Software Foundation. */ +#include #include #include #include @@ -49,7 +50,15 @@ int arizona_clk32k_enable(struct arizona *arizona) case ARIZONA_32KZ_MCLK1: ret = pm_runtime_get_sync(arizona->dev); if (ret != 0) - goto out; + goto err_ref; + ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]); + if (ret != 0) + goto err_pm; + break; + case ARIZONA_32KZ_MCLK2: + ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]); + if (ret != 0) + goto err_ref; break; } @@ -58,7 +67,9 @@ int arizona_clk32k_enable(struct arizona *arizona) ARIZONA_CLK_32K_ENA); } -out: +err_pm: + pm_runtime_put_sync(arizona->dev); +err_ref: if (ret != 0) arizona->clk32k_ref--; @@ -83,6 +94,10 @@ int arizona_clk32k_disable(struct arizona *arizona) switch (arizona->pdata.clk32k_src) { case ARIZONA_32KZ_MCLK1: pm_runtime_put_sync(arizona->dev); + clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]); + break; + case ARIZONA_32KZ_MCLK2: + clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]); break; } } @@ -1000,6 +1015,7 @@ static const struct mfd_cell wm8998_devs[] = { int arizona_dev_init(struct arizona *arizona) { + const char * const mclk_name[] = { "mclk1", "mclk2" }; struct device *dev = arizona->dev; const char *type_name = NULL; unsigned int reg, val, mask; @@ -1016,6 +1032,16 @@ int arizona_dev_init(struct arizona *arizona) else arizona_of_get_core_pdata(arizona); + BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name)); + for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) { + arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]); + if (IS_ERR(arizona->mclk[i])) { + dev_info(arizona->dev, "Failed to get %s: %ld\n", + mclk_name[i], PTR_ERR(arizona->mclk[i])); + arizona->mclk[i] = NULL; + } + } + regcache_cache_only(arizona->regmap, true); switch (arizona->type) { diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h index 58ab4c0..b9909bb 100644 --- a/include/linux/mfd/arizona/core.h +++ b/include/linux/mfd/arizona/core.h @@ -13,6 +13,7 @@ #ifndef _WM_ARIZONA_CORE_H #define _WM_ARIZONA_CORE_H +#include #include #include #include @@ -21,6 +22,12 @@ #define ARIZONA_MAX_CORE_SUPPLIES 2 +enum { + ARIZONA_MCLK1, + ARIZONA_MCLK2, + ARIZONA_NUM_MCLK +}; + enum arizona_type { WM5102 = 1, WM5110 = 2, @@ -139,6 +146,8 @@ struct arizona { struct mutex clk_lock; int clk32k_ref; + struct clk *mclk[ARIZONA_NUM_MCLK]; + bool ctrlif_error; struct snd_soc_dapm_context *dapm;