From mboxrd@z Thu Jan 1 00:00:00 1970 From: Viresh Kumar Subject: [PATCH V4 01/12] of: platform: Add of_find_amba_device_by_node() Date: Sun, 29 Oct 2017 19:18:49 +0530 Message-ID: <80731ad75f52781bf1d5fb1a1a211ee59b4a2ffb.1509284255.git.viresh.kumar@linaro.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: In-Reply-To: References: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Greg Kroah-Hartman Cc: nm@ti.com, devicetree@vger.kernel.org, Rajendra Nayak , Frank Rowand , Viresh Kumar , s.hauer@pengutronix.de, Stephen Boyd , linux-kernel@vger.kernel.org, xuwei5@hisilicon.com, robdclark@gmail.com, robh+dt@kernel.org, fabio.estevam@nxp.com, Vincent Guittot , shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org, l.stach@pengutronix.de List-Id: devicetree@vger.kernel.org of_find_device_by_node() works only with platform devices. Lets create one for amba devices as well. Cc: Frank Rowand Cc: devicetree@vger.kernel.org Signed-off-by: Viresh Kumar --- drivers/of/platform.c | 20 ++++++++++++++++++++ include/linux/of_platform.h | 9 +++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index ac15d0e3d27d..b38a8e5908a3 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -60,6 +60,26 @@ struct platform_device *of_find_device_by_node(struct device_node *np) } EXPORT_SYMBOL(of_find_device_by_node); +#ifdef CONFIG_ARM_AMBA +/** + * of_find_amba_device_by_node - Find the amba_device associated with a node + * @np: Pointer to device tree node + * + * Takes a reference to the embedded struct device which needs to be dropped + * after use. + * + * Returns amba_device pointer, or NULL if not found + */ +struct amba_device *of_find_amba_device_by_node(struct device_node *np) +{ + struct device *dev; + + dev = bus_find_device(&amba_bustype, NULL, np, of_dev_node_match); + return dev ? to_amba_device(dev) : NULL; +} +EXPORT_SYMBOL(of_find_amba_device_by_node); +#endif + #ifdef CONFIG_OF_ADDRESS /* * The following routines scan a subtree and registers a device for diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index 8a561e08bc9e..fbf8a6443885 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -61,6 +61,15 @@ static inline struct platform_device *of_find_device_by_node(struct device_node } #endif +#if defined(CONFIG_OF) && defined(CONFIG_ARM_AMBA) +extern struct amba_device *of_find_amba_device_by_node(struct device_node *np); +#else +static inline struct amba_device *of_find_amba_device_by_node(struct device_node *np) +{ + return NULL; +} +#endif + #ifdef CONFIG_OF_ADDRESS /* Platform drivers register/unregister */ extern struct platform_device *of_device_alloc(struct device_node *np, -- 2.15.0.rc1.236.g92ea95045093