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| author | Lucas Stach <l.stach@pengutronix.de> | 2019-01-14 17:42:07 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-01-15 07:58:37 +0100 |
| commit | e27c0b64db0109560070b6e29624e8b02b758639 (patch) | |
| tree | 9eae3466e08d32a68bd79ea5872ad37b4ec475a1 /include | |
| parent | 80be8c6d20872a4ce83cb1a850840e53b325f660 (diff) | |
| download | barebox-e27c0b64db0109560070b6e29624e8b02b758639.tar.gz barebox-e27c0b64db0109560070b6e29624e8b02b758639.tar.xz | |
clk: add divider_recalc_rate helper
Closer to Linux kernel implementation and needed for imx8mq
composite clock.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/clk.h | 5 | ||||
| -rw-r--r-- | include/linux/kernel.h | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/clk.h b/include/linux/clk.h index 13b1e529f5..978a0a8a9a 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -259,6 +259,11 @@ struct clk_divider { extern struct clk_ops clk_divider_ops; +unsigned long divider_recalc_rate(struct clk *clk, unsigned long parent_rate, + unsigned int val, + const struct clk_div_table *table, + unsigned long flags, unsigned long width); + struct clk *clk_divider_alloc(const char *name, const char *parent, void __iomem *reg, u8 shift, u8 width, unsigned flags); void clk_divider_free(struct clk *clk_divider); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index cc6d6f7467..ee0b48e089 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -55,6 +55,11 @@ #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) +#define DIV_ROUND_DOWN_ULL(ll, d) \ + ({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; }) + +#define DIV_ROUND_UP_ULL(ll, d) DIV_ROUND_DOWN_ULL((ll) + (d) - 1, (d)) + #define DIV_ROUND_CLOSEST(x, divisor)( \ { \ typeof(divisor) __divisor = divisor; \ |