diff options
| author | Mike Turquette | 2014-02-18 21:21:25 -0800 |
|---|---|---|
| committer | Maxime Ripard | 2014-09-27 08:57:38 +0200 |
| commit | e59c5371fb9d8268d1c043172e88cecab9dc934f (patch) | |
| tree | 54acf05ccfffdc1dc17dd3c0adb92f54332e0bb0 /include/linux/clk-provider.h | |
| parent | cfe4c93b58924b3764cd7269d3d953049405e938 (diff) | |
clk: introduce clk_set_phase function & callback
A common operation for a clock signal generator is to shift the phase of
that signal. This patch introduces a new function to the clk.h API to
dynamically adjust the phase of a clock signal. Additionally this patch
introduces support for the new function in the common clock framework
via the .set_phase call back in struct clk_ops.
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'include/linux/clk-provider.h')
| -rw-r--r-- | include/linux/clk-provider.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 411dd7eb2653..201a6195a3eb 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -129,6 +129,10 @@ struct dentry; * set then clock accuracy will be initialized to parent accuracy * or 0 (perfect clock) if clock has no parent. * + * @set_phase: Shift the phase this clock signal in degrees specified + * by the second argument. Valid values for degrees are + * 0-359. Return 0 on success, otherwise -EERROR. + * * @init: Perform platform-specific initialization magic. * This is not not used by any of the basic clock types. * Please consider other ways of solving initialization problems @@ -177,6 +181,7 @@ struct clk_ops { unsigned long parent_rate, u8 index); unsigned long (*recalc_accuracy)(struct clk_hw *hw, unsigned long parent_accuracy); + int (*set_phase)(struct clk_hw *hw, int degrees); void (*init)(struct clk_hw *hw); int (*debug_init)(struct clk_hw *hw, struct dentry *dentry); }; |