diff options
| -rw-r--r-- | drivers/clk/clk-composite.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c index 1f903e1f86a2..4d4b5aba397d 100644 --- a/drivers/clk/clk-composite.c +++ b/drivers/clk/clk-composite.c @@ -151,6 +151,33 @@ static int clk_composite_set_rate(struct clk_hw *hw, unsigned long rate, return rate_ops->set_rate(rate_hw, rate, parent_rate); } +static int clk_composite_set_rate_and_parent(struct clk_hw *hw, + unsigned long rate, + unsigned long parent_rate, + u8 index) +{ + struct clk_composite *composite = to_clk_composite(hw); + const struct clk_ops *rate_ops = composite->rate_ops; + const struct clk_ops *mux_ops = composite->mux_ops; + struct clk_hw *rate_hw = composite->rate_hw; + struct clk_hw *mux_hw = composite->mux_hw; + unsigned long temp_rate; + + __clk_hw_set_clk(rate_hw, hw); + __clk_hw_set_clk(mux_hw, hw); + + temp_rate = rate_ops->recalc_rate(rate_hw, parent_rate); + if (temp_rate > rate) { + rate_ops->set_rate(rate_hw, rate, parent_rate); + mux_ops->set_parent(mux_hw, index); + } else { + mux_ops->set_parent(mux_hw, index); + rate_ops->set_rate(rate_hw, rate, parent_rate); + } + + return 0; +} + static int clk_composite_is_enabled(struct clk_hw *hw) { struct clk_composite *composite = to_clk_composite(hw); @@ -250,6 +277,12 @@ struct clk *clk_register_composite(struct device *dev, const char *name, composite->rate_ops = rate_ops; } + if (mux_hw && mux_ops && rate_hw && rate_ops) { + if (mux_ops->set_parent && rate_ops->set_rate) + clk_composite_ops->set_rate_and_parent = + clk_composite_set_rate_and_parent; + } + if (gate_hw && gate_ops) { if (!gate_ops->is_enabled || !gate_ops->enable || !gate_ops->disable) { |