diff options
Diffstat (limited to 'drivers/clk/mxs/clk-ref.c')
| -rw-r--r-- | drivers/clk/mxs/clk-ref.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/clk/mxs/clk-ref.c b/drivers/clk/mxs/clk-ref.c index d62ebfc0dd..7ff5527797 100644 --- a/drivers/clk/mxs/clk-ref.c +++ b/drivers/clk/mxs/clk-ref.c @@ -40,6 +40,17 @@ struct clk_ref { #define SET 0x4 #define CLR 0x8 +static int clk_ref_is_enabled(struct clk *clk) +{ + struct clk_ref *ref = to_clk_ref(clk); + u32 reg = readl(ref->reg); + + if (reg & 1 << ((ref->idx + 1) * 8 - 1)) + return 0; + + return 1; +} + static int clk_ref_enable(struct clk *clk) { struct clk_ref *ref = to_clk_ref(clk); @@ -118,6 +129,7 @@ static int clk_ref_set_rate(struct clk *clk, unsigned long rate, } static const struct clk_ops clk_ref_ops = { + .is_enabled = clk_ref_is_enabled, .enable = clk_ref_enable, .disable = clk_ref_disable, .recalc_rate = clk_ref_recalc_rate, |