From patchwork Thu Nov 6 08:52:52 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenyou Yang X-Patchwork-Id: 5240231 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 861399FD45 for ; Thu, 6 Nov 2014 09:01:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9B2AC200E3 for ; Thu, 6 Nov 2014 09:01:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B42BF200DF for ; Thu, 6 Nov 2014 09:01:02 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XmIty-0000lP-Cn; Thu, 06 Nov 2014 08:58:46 +0000 Received: from eusmtp01.atmel.com ([212.144.249.242]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XmItw-0000gv-D8 for linux-arm-kernel@lists.infradead.org; Thu, 06 Nov 2014 08:58:44 +0000 Received: from apsmtp01.atmel.com (10.168.254.30) by eusmtp01.atmel.com (10.161.101.30) with Microsoft SMTP Server id 14.2.347.0; Thu, 6 Nov 2014 09:58:17 +0100 Received: from shaarm01.corp.atmel.com (10.168.254.13) by apsmtp01.corp.atmel.com (10.168.254.30) with Microsoft SMTP Server id 14.2.347.0; Thu, 6 Nov 2014 16:56:44 +0800 From: Wenyou Yang To: , Subject: [PATCH] mmc: atmel-mci: adopt pinctrl support Date: Thu, 6 Nov 2014 16:52:52 +0800 Message-ID: <1415263973-15012-1-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141106_005844_610753_1900B016 X-CRM114-Status: UNSURE ( 8.86 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.6 (/) Cc: khilman@kernel.org, nicolas.ferre@atmel.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, wenyou.yang@atmel.com, ludovic.desroches@atmel.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Amend the atmel mci pin controller to optionally take a pin control handle and set the state of the pins to: - "default" on boot, resume and before performing an transfer. - "sleep" on suspend(). This should make it possible to optimize energy usage for the pins both for the suspend/resume cycle. Signed-off-by: Wenyou Yang --- drivers/mmc/host/atmel-mci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 4df1599..eb4bfbc 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include @@ -2385,6 +2386,8 @@ static int __init atmci_probe(struct platform_device *pdev) int irq; int ret, i; + pinctrl_pm_select_default_state(&pdev->dev); + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) return -ENXIO; @@ -2568,6 +2571,8 @@ static int atmci_runtime_suspend(struct device *dev) clk_disable_unprepare(host->mck); + pinctrl_pm_select_sleep_state(dev); + return 0; } @@ -2575,6 +2580,8 @@ static int atmci_runtime_resume(struct device *dev) { struct atmel_mci *host = dev_get_drvdata(dev); + pinctrl_pm_select_default_state(dev); + return clk_prepare_enable(host->mck); } #endif