diff options
Diffstat (limited to 'drivers/clk/clk-divider.c')
| -rw-r--r-- | drivers/clk/clk-divider.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index 87ba4966b0e8..f6b2bf558486 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -446,6 +446,27 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate, divider->width, divider->flags); } +static int clk_divider_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct clk_divider *divider = to_clk_divider(hw); + + /* if read only, just return current value */ + if (divider->flags & CLK_DIVIDER_READ_ONLY) { + u32 val; + + val = clk_div_readl(divider) >> divider->shift; + val &= clk_div_mask(divider->width); + + return divider_ro_determine_rate(hw, req, divider->table, + divider->width, + divider->flags, val); + } + + return divider_determine_rate(hw, req, divider->table, divider->width, + divider->flags); +} + int divider_get_val(unsigned long rate, unsigned long parent_rate, const struct clk_div_table *table, u8 width, unsigned long flags) @@ -501,6 +522,7 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate, const struct clk_ops clk_divider_ops = { .recalc_rate = clk_divider_recalc_rate, .round_rate = clk_divider_round_rate, + .determine_rate = clk_divider_determine_rate, .set_rate = clk_divider_set_rate, }; EXPORT_SYMBOL_GPL(clk_divider_ops); @@ -508,6 +530,7 @@ EXPORT_SYMBOL_GPL(clk_divider_ops); const struct clk_ops clk_divider_ro_ops = { .recalc_rate = clk_divider_recalc_rate, .round_rate = clk_divider_round_rate, + .determine_rate = clk_divider_determine_rate, }; EXPORT_SYMBOL_GPL(clk_divider_ro_ops); |