From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Zhao Subject: [PATCH V2 01/14] clk: add helper functions clk_prepare_enable and clk_disable_unprepare Date: Fri, 11 Nov 2011 09:10:16 +0800 Message-ID: <1320973829-4388-2-git-send-email-richard.zhao@linaro.org> References: <1320973829-4388-1-git-send-email-richard.zhao@linaro.org> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1320973829-4388-1-git-send-email-richard.zhao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, amit.kucheria-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org, kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org, cjb-2X9k7bc8m7Mdnm+yROfE0A@public.gmane.org, alan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, eric.miao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, Richard Zhao List-Id: linux-serial@vger.kernel.org Signed-off-by: Richard Zhao --- include/linux/clk.h | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/include/linux/clk.h b/include/linux/clk.h index 7213b52..63985f7 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -107,6 +107,25 @@ static inline void clk_unprepare(struct clk *clk) } #endif +static inline int clk_prepare_enable(struct clk *clk) +{ + int ret; + + ret = clk_prepare(clk); + if (!ret) + ret = clk_enable(clk); + if (ret) + clk_unprepare(clk); + + return ret; +} + +static inline void clk_disable_unprepare(struct clk *clk) +{ + clk_disable(clk); + clk_unprepare(clk); +} + /** * clk_get_rate - obtain the current clock rate (in Hz) for a clock source. * This is only valid once the clock source has been enabled. -- 1.7.5.4