From f0e075162f815f9cb769c7bb9003e0ad3b829811 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Wed, 13 Jan 2016 13:16:12 +0900 Subject: [PATCH] clk: add API to enable clock The most basic thing for clock is to enable it, but it is missing in this uclass. Signed-off-by: Masahiro Yamada Acked-by: Simon Glass --- drivers/clk/clk-uclass.c | 10 ++++++++++ include/clk.h | 18 ++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index 73dfd7d016..19f6f07c6f 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -32,6 +32,16 @@ ulong clk_set_rate(struct udevice *dev, ulong rate) return ops->set_rate(dev, rate); } +int clk_enable(struct udevice *dev, int periph) +{ + struct clk_ops *ops = clk_get_ops(dev); + + if (!ops->enable) + return -ENOSYS; + + return ops->enable(dev, periph); +} + ulong clk_get_periph_rate(struct udevice *dev, int periph) { struct clk_ops *ops = clk_get_ops(dev); diff --git a/include/clk.h b/include/clk.h index 371784a56e..941808a50e 100644 --- a/include/clk.h +++ b/include/clk.h @@ -32,6 +32,15 @@ struct clk_ops { */ ulong (*set_rate)(struct udevice *dev, ulong rate); + /** + * enable() - Enable the clock for a peripheral + * + * @dev: clock provider + * @periph: Peripheral ID to enable + * @return zero on success, or -ve error code + */ + int (*enable)(struct udevice *dev, int periph); + /** * get_periph_rate() - Get clock rate for a peripheral * @@ -70,6 +79,15 @@ ulong clk_get_rate(struct udevice *dev); */ ulong clk_set_rate(struct udevice *dev, ulong rate); +/** + * clk_enable() - Enable the clock for a peripheral + * + * @dev: clock provider + * @periph: Peripheral ID to enable + * @return zero on success, or -ve error code + */ +int clk_enable(struct udevice *dev, int periph); + /** * clk_get_periph_rate() - Get current clock rate for a peripheral *