From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Turquette Subject: [PATCH RFC 1/3] clk: of: helper for determining number of parent clocks Date: Mon, 3 Jun 2013 10:53:08 -0700 Message-ID: <1370281990-15090-2-git-send-email-mturquette@linaro.org> References: <1370281990-15090-1-git-send-email-mturquette@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1370281990-15090-1-git-send-email-mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Mike Turquette , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org Walks the "clocks" array of parent clock phandles and returns the number. Signed-off-by: Mike Turquette --- DT gurus, please let me know if this is stupid. I am unfamiliar with parsing DT blobs and associated APIs. drivers/clk/clk.c | 6 ++++++ include/linux/clk-provider.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index af0dbcc..73e0358 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2082,6 +2082,12 @@ struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec) return clk; } +int of_clk_get_parent_count(struct device_node *np) +{ + return of_count_phandle_with_args(np, "clocks", "#clock-cells"); +} +EXPORT_SYMBOL_GPL(of_clk_get_parent_count); + const char *of_clk_get_parent_name(struct device_node *np, int index) { struct of_phandle_args clkspec; diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 265f384..f8d38f2 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -442,6 +442,7 @@ void of_clk_del_provider(struct device_node *np); struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec, void *data); struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data); +int of_clk_get_parent_count(struct device_node *np); const char *of_clk_get_parent_name(struct device_node *np, int index); void of_clk_init(const struct of_device_id *matches); -- 1.8.1.2