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| author | Andrey Panov <rockford@yandex.ru> | 2015-03-04 23:11:35 +0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-03-05 09:11:34 +0100 |
| commit | e3459c10ab9dbb91b73448bbbe3f1ea83881ecae (patch) | |
| tree | a03af642036af5bd85844450deef6b97693d10d3 /drivers/clk/clk-divider.c | |
| parent | 5a3a479dae11dd16ad0b754ae798fc083db3b3aa (diff) | |
| download | barebox-e3459c10ab9dbb91b73448bbbe3f1ea83881ecae.tar.gz barebox-e3459c10ab9dbb91b73448bbbe3f1ea83881ecae.tar.xz | |
CLK: clk-divider: Respect CLK_DIVIDER_POWER_OF_TWO flag
Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/clk/clk-divider.c')
| -rw-r--r-- | drivers/clk/clk-divider.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index cedcddaabd..646e5b0e7d 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -19,6 +19,7 @@ #include <malloc.h> #include <linux/clk.h> #include <linux/err.h> +#include <linux/log2.h> #define div_mask(d) ((1 << ((d)->width)) - 1) @@ -26,6 +27,8 @@ static unsigned int _get_maxdiv(struct clk_divider *divider) { if (divider->flags & CLK_DIVIDER_ONE_BASED) return div_mask(divider); + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << div_mask(divider); return div_mask(divider) + 1; } @@ -44,6 +47,8 @@ static unsigned int _get_div(struct clk_divider *divider, unsigned int val) { if (divider->flags & CLK_DIVIDER_ONE_BASED) return val; + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return 1 << val; if (divider->table) return _get_table_div(divider->table, val); return val + 1; @@ -64,6 +69,8 @@ static unsigned int _get_val(struct clk_divider *divider, unsigned int div) { if (divider->flags & CLK_DIVIDER_ONE_BASED) return div; + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return __ffs(div); if (divider->table) return _get_table_val(divider->table, div); return div - 1; @@ -102,6 +109,8 @@ static bool _is_valid_table_div(const struct clk_div_table *table, static bool _is_valid_div(struct clk_divider *divider, unsigned int div) { + if (divider->flags & CLK_DIVIDER_POWER_OF_TWO) + return is_power_of_2(div); if (divider->table) return _is_valid_table_div(divider->table, div); return true; |