From cf7f46b9b12269d204b6acd0925704543adb6e05 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 8 Jan 2018 14:28:45 +0100 Subject: [PATCH] clocksource/drivers/timer-of: Add kernel documentation The current code has no comments, neither any function descriptions. Fix this by adding function descriptions in kernel doc format. Signed-off-by: Daniel Lezcano Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1515418139-23276-6-git-send-email-daniel.lezcano@linaro.org [ Spelling and style fixes. ] Signed-off-by: Ingo Molnar --- drivers/clocksource/timer-of.c | 37 ++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c index ad5565404e25..c1045b9a787c 100644 --- a/drivers/clocksource/timer-of.c +++ b/drivers/clocksource/timer-of.c @@ -24,6 +24,12 @@ #include "timer-of.h" +/** + * timer_of_irq_exit - Release the interrupt + * @of_irq: an of_timer_irq structure pointer + * + * Free the irq resource + */ static __init void timer_of_irq_exit(struct of_timer_irq *of_irq) { struct timer_of *to = container_of(of_irq, struct timer_of, of_irq); @@ -34,6 +40,22 @@ static __init void timer_of_irq_exit(struct of_timer_irq *of_irq) free_irq(of_irq->irq, clkevt); } +/** + * timer_of_irq_init - Request the interrupt + * @np: a device tree node pointer + * @of_irq: an of_timer_irq structure pointer + * + * Get the interrupt number from the DT from its definition and + * request it. The interrupt is gotten by falling back the following way: + * + * - Get interrupt number by name + * - Get interrupt number by index + * + * When the interrupt is per CPU, 'request_percpu_irq()' is called, + * otherwise 'request_irq()' is used. + * + * Returns 0 on success, < 0 otherwise + */ static __init int timer_of_irq_init(struct device_node *np, struct of_timer_irq *of_irq) { @@ -72,6 +94,12 @@ static __init int timer_of_irq_init(struct device_node *np, return 0; } +/** + * timer_of_clk_exit - Release the clock resources + * @of_clk: a of_timer_clk structure pointer + * + * Disables and releases the refcount on the clk + */ static __init void timer_of_clk_exit(struct of_timer_clk *of_clk) { of_clk->rate = 0; @@ -79,6 +107,15 @@ static __init void timer_of_clk_exit(struct of_timer_clk *of_clk) clk_put(of_clk->clk); } +/** + * timer_of_clk_init - Initialize the clock resources + * @np: a device tree node pointer + * @of_clk: a of_timer_clk structure pointer + * + * Get the clock by name or by index, enable it and get the rate + * + * Returns 0 on success, < 0 otherwise + */ static __init int timer_of_clk_init(struct device_node *np, struct of_timer_clk *of_clk) { -- 2.30.2