From 3ce228467a6c7795fffa5e2dfe8a86f11fa8476b Mon Sep 17 00:00:00 2001 From: Peter De Schrijver Date: Thu, 26 Jun 2014 18:00:53 +0300 Subject: [PATCH] clk: define and export clk_debugs_add_file Define and export a new function clk_debugs_add_file which adds a file to a existing clock's debugfs directory. This can be used by clock providers to add debugfs entries which are not related to a specific clock type. Examples include the ability to measure the rate of a clock. It can also be used by modules to create new debugfs entries. This is useful if you want to expose features for testing which can potentially cause system instability such as allowing to change a clock's rate from userspace. Signed-off-by: Peter De Schrijver Signed-off-by: Mike Turquette --- drivers/clk/clk.c | 12 ++++++++++++ include/linux/clk-provider.h | 5 +++++ 2 files changed, 17 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 958967d141eec..9ad3970504719 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -358,6 +358,18 @@ static void clk_debug_unregister(struct clk *clk) debugfs_remove_recursive(clk->dentry); } +struct dentry *clk_debugfs_add_file(struct clk *clk, char *name, umode_t mode, + void *data, const struct file_operations *fops) +{ + struct dentry *d = NULL; + + if (clk->dentry) + d = debugfs_create_file(name, mode, clk->dentry, data, fops); + + return d; +} +EXPORT_SYMBOL_GPL(clk_debugfs_add_file); + /** * clk_debug_init - lazily create the debugfs clk tree visualization * diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 0c287dbbb1441..411dd7eb26533 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -619,5 +619,10 @@ static inline void clk_writel(u32 val, u32 __iomem *reg) #endif /* platform dependent I/O accessors */ +#ifdef CONFIG_DEBUG_FS +struct dentry *clk_debugfs_add_file(struct clk *clk, char *name, umode_t mode, + void *data, const struct file_operations *fops); +#endif + #endif /* CONFIG_COMMON_CLK */ #endif /* CLK_PROVIDER_H */ -- 2.39.5