Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754324AbaJUCbX (ORCPT ); Mon, 20 Oct 2014 22:31:23 -0400 Received: from eusmtp01.atmel.com ([212.144.249.242]:32343 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754296AbaJUCbW (ORCPT ); Mon, 20 Oct 2014 22:31:22 -0400 From: Wenyou Yang To: , CC: , , , , , Subject: [PATCH v2 2/3] i2c/at91: add support for system PM Date: Tue, 21 Oct 2014 10:26:18 +0800 Message-ID: <1413858379-22865-3-git-send-email-wenyou.yang@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1413858379-22865-1-git-send-email-wenyou.yang@atmel.com> References: <1413858379-22865-1-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 Acked-by: Ludovic Desroches --- drivers/i2c/busses/i2c-at91.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index 1b43b08..8f8fd2a 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -861,7 +861,32 @@ static int at91_twi_runtime_resume(struct device *dev) return clk_prepare_enable(twi_dev->clk); } +static int at91_twi_suspend(struct device *dev) +{ + if (!pm_runtime_suspended(dev)) + at91_twi_runtime_suspend(dev); + + return 0; +} + +static int at91_twi_resume(struct device *dev) +{ + int ret; + + if (!pm_runtime_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 = { + SET_SYSTEM_SLEEP_PM_OPS(at91_twi_suspend, at91_twi_resume) SET_RUNTIME_PM_OPS(at91_twi_runtime_suspend, at91_twi_runtime_resume, NULL) }; -- 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/