Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753824AbaJXGy5 (ORCPT ); Fri, 24 Oct 2014 02:54:57 -0400 Received: from eusmtp01.atmel.com ([212.144.249.242]:22704 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751377AbaJXGy4 (ORCPT ); Fri, 24 Oct 2014 02:54:56 -0400 From: Wenyou Yang To: , CC: , , , , , Subject: [PATCH v3 2/3] i2c/at91: add support for system PM Date: Fri, 24 Oct 2014 14:50:16 +0800 Message-ID: <1414133417-11530-3-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1414133417-11530-1-git-send-email-wenyou.yang@atmel.com> References: <1414133417-11530-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Wenyou Yang --- drivers/i2c/busses/i2c-at91.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index a25fb5e..6a84a2a 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -861,7 +861,33 @@ static int at91_twi_runtime_resume(struct device *dev) return clk_prepare_enable(twi_dev->clk); } +static int at91_twi_suspend_noirq(struct device *dev) +{ + if (!pm_runtime_status_suspended(dev)) + at91_twi_runtime_suspend(dev); + + return 0; +} + +static int at91_twi_resume_noirq(struct device *dev) +{ + int ret; + + if (!pm_runtime_status_suspended(dev)) { + ret = at91_twi_runtime_resume(dev); + if (ret) + return ret; + } + + pm_runtime_mark_last_busy(dev); + pm_request_autosuspend(dev); + + return 0; +} + static const struct dev_pm_ops at91_twi_pm = { + .suspend_noirq = at91_twi_suspend_noirq, + .resume_noirq = at91_twi_resume_noirq, .runtime_suspend = at91_twi_runtime_suspend, .runtime_resume = at91_twi_runtime_resume, }; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/