Re: [PATCH] clk: qcom: clk-alpha-pll: Use determine_rate instead of round_rate

[Devi Priya <quic_devipriy@xxxxxxxxxxx>]

On 7/20/2023 1:34 AM, Stephen Boyd wrote:
> Quoting Devi Priya (2023-07-10 02:32:06)
> > @@ -1094,25 +1099,25 @@ static const struct clk_div_table clk_alpha_2bit_div_table[] = {
> >          { }
> >   };
> >   
> > -static long
> > -clk_alpha_pll_postdiv_round_rate(struct clk_hw *hw, unsigned long rate,
> > -                                unsigned long *prate)
> > +static int clk_alpha_pll_postdiv_determine_rate(struct clk_hw *hw,
> > +                                               struct clk_rate_request *req)
> >   {
> >          struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
> >          const struct clk_div_table *table;
> > +       unsigned long rate = req->rate;
> >   
> >          if (pll->width == 2)
> >                  table = clk_alpha_2bit_div_table;
> >          else
> >                  table = clk_alpha_div_table;
> >   
> > -       return divider_round_rate(hw, rate, prate, table,
> > -                                 pll->width, CLK_DIVIDER_POWER_OF_TWO);
> > +       req->rate = divider_round_rate(hw, rate, &req->best_parent_rate, table,
>
> Can you use divider_determine_rate() instead?

Sure, okay
> > +                                      pll->width, CLK_DIVIDER_POWER_OF_TWO);
> > +       return 0;
> >   }
> >   
> > -static long
> > -clk_alpha_pll_postdiv_round_ro_rate(struct clk_hw *hw, unsigned long rate,
> > -                                   unsigned long *prate)
> > +static int clk_alpha_pll_postdiv_determine_ro_rate(struct clk_hw *hw,
> > +                                                  struct clk_rate_request *req)
> >   {
> >          struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
> >          u32 ctl, div;
> [...]
> > @@ -1452,14 +1459,16 @@ clk_trion_pll_postdiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
> >          return (parent_rate / div);
> >   }
> >   
> > -static long
> > -clk_trion_pll_postdiv_round_rate(struct clk_hw *hw, unsigned long rate,
> > -                                unsigned long *prate)
> > +static int
> > +clk_trion_pll_postdiv_determine_rate(struct clk_hw *hw,
> > +                                    struct clk_rate_request *req)
> >   {
> >          struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
> >   
> > -       return divider_round_rate(hw, rate, prate, pll->post_div_table,
> > -                                 pll->width, CLK_DIVIDER_ROUND_CLOSEST);
> > +       req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,
>
> divider_determine_rate()?
Sure
> > +                                      pll->post_div_table, pll->width,
> > +                                      CLK_DIVIDER_ROUND_CLOSEST);
> > +       return 0;
> >   };
> >   
> >   static int
> > @@ -1485,18 +1494,21 @@ clk_trion_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
> >   
> >   const struct clk_ops clk_alpha_pll_postdiv_trion_ops = {
> >          .recalc_rate = clk_trion_pll_postdiv_recalc_rate,
> > -       .round_rate = clk_trion_pll_postdiv_round_rate,
> > +       .determine_rate = clk_trion_pll_postdiv_determine_rate,
> >          .set_rate = clk_trion_pll_postdiv_set_rate,
> >   };
> >   EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_trion_ops);
> >   
> > -static long clk_alpha_pll_postdiv_fabia_round_rate(struct clk_hw *hw,
> > -                               unsigned long rate, unsigned long *prate)
> > +static int
> > +clk_alpha_pll_postdiv_fabia_determine_rate(struct clk_hw *hw,
> > +                                          struct clk_rate_request *req)
> >   {
> >          struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
> >   
> > -       return divider_round_rate(hw, rate, prate, pll->post_div_table,
> > -                               pll->width, CLK_DIVIDER_ROUND_CLOSEST);
> > +       req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,
> > +                                      pll->post_div_table, pll->width,
> > +                                       CLK_DIVIDER_ROUND_CLOSEST);
>
> divider_determine_rate()?
Sure

Thanks,
Devi Priya