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author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2014-05-15 17:40:25 +0400 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-20 15:34:02 +0400 |
commit | e2d0e90fae82809667f1dcf4d0d9baa421691c7a (patch) | |
tree | 6764c944b55c27a8aa5516a0b92492c185d338db /include/linux | |
parent | d6d211db37e75de2ddc3a4f979038c40df7cc79c (diff) | |
download | linux-e2d0e90fae82809667f1dcf4d0d9baa421691c7a.tar.xz |
clk: new basic clk type for fractional divider
Fractional divider clocks are fairly common. This adds basic
type for them.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/clk-provider.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 511917416fb0..fb4eca6907cd 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -413,6 +413,37 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name, const char *parent_name, unsigned long flags, unsigned int mult, unsigned int div); +/** + * struct clk_fractional_divider - adjustable fractional divider clock + * + * @hw: handle between common and hardware-specific interfaces + * @reg: register containing the divider + * @mshift: shift to the numerator bit field + * @mwidth: width of the numerator bit field + * @nshift: shift to the denominator bit field + * @nwidth: width of the denominator bit field + * @lock: register lock + * + * Clock with adjustable fractional divider affecting its output frequency. + */ + +struct clk_fractional_divider { + struct clk_hw hw; + void __iomem *reg; + u8 mshift; + u32 mmask; + u8 nshift; + u32 nmask; + u8 flags; + spinlock_t *lock; +}; + +extern const struct clk_ops clk_fractional_divider_ops; +struct clk *clk_register_fractional_divider(struct device *dev, + const char *name, const char *parent_name, unsigned long flags, + void __iomem *reg, u8 mshift, u8 mwidth, u8 nshift, u8 nwidth, + u8 clk_divider_flags, spinlock_t *lock); + /*** * struct clk_composite - aggregate clock of mux, divider and gate clocks * |