From patchwork Fri Jan 25 11:34:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 10781227 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 2CEF3922 for ; Fri, 25 Jan 2019 11:35:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 148132933D for ; Fri, 25 Jan 2019 11:35:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 048BF2EE96; Fri, 25 Jan 2019 11:35:11 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 5C6D42933D for ; Fri, 25 Jan 2019 11:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=2F1OrJNNCTaYo2G5OrxLIEjpRLjzYoRxF1oU0FfGDho=; b=X6OBhP5lETRE6R iCzG+k1tedWoqWDArMezWlmFtZsQExqOLOikXLgb9NhoG6TUyqN8EeHZItht2cD7mMVUXodv5zjW7 g13I9t5LetpIfJ6swGyKcutoOYmUyqj/0plB5jV/w4/JwlAskqcbnZNcyPotOJwNXK88LGom3CWtg JURr7lDOwi5bsbSkCZWswAvB9zBflAfecWWcnTbdTqJ5wG0epiTbcj2bxkTablIdC+IlnlCzOjltt cdpkuyeIl8afg1Nu/AAoYQqsqm3OjV7mO/FzaOstQmufw+00Vjr9xRDSw5jJWxw1VUQQzJ37TT2j1 7CZNCi6aDOHYGX2pakOg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gmzlL-00055q-4v; Fri, 25 Jan 2019 11:35:07 +0000 Received: from mout02.posteo.de ([185.67.36.66]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gmzlH-00049T-Vz for linux-arm-kernel@lists.infradead.org; Fri, 25 Jan 2019 11:35:06 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 727F92400E5 for ; Fri, 25 Jan 2019 12:34:56 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1548416096; bh=oYyYmFp2j7XGH9Jl+ZPXOSkTm9PnOf7BpMey+cN1jYE=; h=From:To:Cc:Subject:Date:From; b=cePDq5SOum5Ho6JJ19cKN2939Od5ghBEK1UxkOer5Ow5KUDd01FWZYvhcarKUsk/S mO1tz4xeozyUbkTe7kAfbOPywnP8OuMxoSKXAya1PWxU6Drt2EGE2xisKtKzhd09GK rtJxkHYx2Bj4W1rwSs46GEvnKWpNY+3jzDVlZeTVbIzb1NwNbaWF4xLC395V1xPsF7 9FhKplaAZhhxdAqc8+nrTc8Vqy1DIDAWIPyf3i+pnwCaVzumDqC5ludM5/1TVFFcYq iY2orQbBcIYafZbKqB4WCrGWcp5jIY3dYmjtS84EO+aPpJEBuntPZkP3Jo3fhlIr/v qK/svXf2eDdOQ== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 43mH4Z0Gx9z9rxh; Fri, 25 Jan 2019 12:34:53 +0100 (CET) From: Martin Kepplinger To: linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robin@protonic.nl Subject: [PATCH] mmc: mxs-mmc: Introduce regulator support Date: Fri, 25 Jan 2019 12:34:49 +0100 Message-Id: <20190125113449.10128-1-martink@posteo.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190125_033504_224986_9A74F5F4 X-CRM114-Status: GOOD ( 12.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ulf.hansson@linaro.org, s.hauer@pengutronix.de, Martin Kepplinger , linux-kernel@vger.kernel.org, linux-imx@nxp.com, shawnguo@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Martin Kepplinger This adds support for explicitly switching the mmc's power on and off. Signed-off-by: Martin Kepplinger --- This is not my patch. It's taken from https://patchwork.kernel.org/patch/4365751/ rebased and minimally changed; but we use this. Are there any objections to this? Robin, can I still add your Signed-off-by to this? Also, should I set you as the author? thanks, martin drivers/mmc/host/mxs-mmc.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index add1e70195ea..e3c19fabb723 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -517,6 +517,26 @@ static void mxs_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) else host->bus_width = 0; + if (ios->power_mode != host->power_mode) { + switch (ios->power_mode) { + case MMC_POWER_OFF: + if ((host->vmmc) && regulator_disable(host->vmmc)) { + dev_err(mmc_dev(host->mmc), + "Failed to disable vmmc regulator\n"); + } + break; + case MMC_POWER_UP: + if ((host->vmmc) && regulator_enable(host->vmmc)) { + dev_err(mmc_dev(host->mmc), + "Failed to enable vmmc regulator\n"); + } + break; + default: + break; + } + host->power_mode = ios->power_mode; + } + if (ios->clock) mxs_ssp_set_clk_rate(&host->ssp, ios->clock); } @@ -613,16 +633,11 @@ static int mxs_mmc_probe(struct platform_device *pdev) host->mmc = mmc; host->sdio_irq_en = 0; + host->power_mode = MMC_POWER_OFF; reg_vmmc = devm_regulator_get(&pdev->dev, "vmmc"); - if (!IS_ERR(reg_vmmc)) { - ret = regulator_enable(reg_vmmc); - if (ret) { - dev_err(&pdev->dev, - "Failed to enable vmmc regulator: %d\n", ret); - goto out_mmc_free; - } - } + if (!IS_ERR(reg_vmmc)) + host->vmmc = reg_vmmc; ssp->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(ssp->clk)) {