static int flexgen_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct flexgen *flexgen = to_flexgen(hw);
struct clk_hw *pdiv_hw = &flexgen->pdiv.hw;
struct clk_hw *fdiv_hw = &flexgen->fdiv.hw;
unsigned long div = 0;
int ret = 0;
__clk_hw_set_clk(pdiv_hw, hw);
__clk_hw_set_clk(fdiv_hw, hw);
div = clk_best_div(parent_rate, rate);
/*
* pdiv is mainly targeted for low freq results, while fdiv
* should be used for div <= 64. The other way round can
* lead to 'duty cycle' issues.
*/
if (div <= 64) {
clk_divider_ops.set_rate(pdiv_hw, parent_rate, parent_rate);
ret = clk_divider_ops.set_rate(fdiv_hw, rate, rate * div);
} else {
clk_divider_ops.set_rate(fdiv_hw, parent_rate, parent_rate);
ret = clk_divider_ops.set_rate(pdiv_hw, rate, rate * div);
}
return ret;
}
static long flexgen_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
unsigned long div;
/* Round div according to exact prate and wished rate */
div = clk_best_div(*prate, rate);
if (__clk_get_flags(hw->clk) & CLK_SET_RATE_PARENT) {
*prate = rate * div;
return rate;
}
return *prate / div;
}
static int flexgen_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct flexgen *flexgen = to_flexgen(hw);
struct clk_hw *pdiv_hw = &flexgen->pdiv.hw;
struct clk_hw *fdiv_hw = &flexgen->fdiv.hw;
unsigned long primary_div = 0;
int ret = 0;
pdiv_hw->clk = hw->clk;
fdiv_hw->clk = hw->clk;
primary_div = clk_best_div(parent_rate, rate);
clk_divider_ops.set_rate(fdiv_hw, parent_rate, parent_rate);
ret = clk_divider_ops.set_rate(pdiv_hw, rate, rate * primary_div);
return ret;
}
