diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2016-09-29 22:57:26 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2016-10-25 12:40:23 +0200 |
| commit | 6e0d50daa97f4bf9706e343b4f71171e88921209 (patch) | |
| tree | f6957d043b7ef32fd7c1f65da3d25a32a7f53a40 /drivers/clk/sunxi-ng/ccu_nm.c | |
| parent | b8302c7267dedaeeb1bf38143f099defbf16dce8 (diff) | |
clk: sunxi-ng: Add minimums for all the relevant structures and clocks
Modify the current clocks we have to be able to specify the minimum for
each clocks we support, just like we support the max.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_nm.c')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu_nm.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_nm.c b/drivers/clk/sunxi-ng/ccu_nm.c index c6d652289320..1dae4f3ed00d 100644 --- a/drivers/clk/sunxi-ng/ccu_nm.c +++ b/drivers/clk/sunxi-ng/ccu_nm.c @@ -15,8 +15,8 @@ #include "ccu_nm.h" struct _ccu_nm { - unsigned long n, max_n; - unsigned long m, max_m; + unsigned long n, min_n, max_n; + unsigned long m, min_m, max_m; }; static void ccu_nm_find_best(unsigned long parent, unsigned long rate, @@ -26,8 +26,8 @@ static void ccu_nm_find_best(unsigned long parent, unsigned long rate, unsigned long best_n = 0, best_m = 0; unsigned long _n, _m; - for (_n = 1; _n <= nm->max_n; _n++) { - for (_m = 1; _n <= nm->max_m; _m++) { + for (_n = nm->min_n; _n <= nm->max_n; _n++) { + for (_m = nm->min_m; _m <= nm->max_m; _m++) { unsigned long tmp_rate = parent * _n / _m; if (tmp_rate > rate) @@ -93,7 +93,9 @@ static long ccu_nm_round_rate(struct clk_hw *hw, unsigned long rate, struct ccu_nm *nm = hw_to_ccu_nm(hw); struct _ccu_nm _nm; + _nm.min_n = 1; _nm.max_n = 1 << nm->n.width; + _nm.min_m = 1; _nm.max_m = nm->m.max ?: 1 << nm->m.width; ccu_nm_find_best(*parent_rate, rate, &_nm); @@ -114,7 +116,9 @@ static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate, else ccu_frac_helper_disable(&nm->common, &nm->frac); + _nm.min_n = 1; _nm.max_n = 1 << nm->n.width; + _nm.min_m = 1; _nm.max_m = nm->m.max ?: 1 << nm->m.width; ccu_nm_find_best(parent_rate, rate, &_nm); |