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clk: qcom: clk-hfpll: switch to .determine_rate
.determine_rate is meant to replace .round_rate. The former comes with a benefit which is especially relevant on 32-bit systems: since .determine_rate uses an "unsigned long" (compared to a "signed long" which is used by .round_rate) the maximum value on 32-bit systems increases from 2^31 (or approx. 2.14GHz) to 2^32 (or approx. 4.29GHz). Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Tested-by: Christian Marangi <ansuelsmth@gmail.com> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230212-clk-qcom-determine_rate-v1-2-b4e447d4926e@z3ntu.xyz
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1 changed files with 7 additions and 7 deletions
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@ -128,20 +128,20 @@ static void clk_hfpll_disable(struct clk_hw *hw)
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spin_unlock_irqrestore(&h->lock, flags);
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spin_unlock_irqrestore(&h->lock, flags);
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}
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}
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static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate,
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static int clk_hfpll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
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unsigned long *parent_rate)
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{
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{
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struct clk_hfpll *h = to_clk_hfpll(hw);
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struct clk_hfpll *h = to_clk_hfpll(hw);
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struct hfpll_data const *hd = h->d;
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struct hfpll_data const *hd = h->d;
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unsigned long rrate;
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unsigned long rrate;
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rate = clamp(rate, hd->min_rate, hd->max_rate);
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req->rate = clamp(req->rate, hd->min_rate, hd->max_rate);
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rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate;
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rrate = DIV_ROUND_UP(req->rate, req->best_parent_rate) * req->best_parent_rate;
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if (rrate > hd->max_rate)
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if (rrate > hd->max_rate)
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rrate -= *parent_rate;
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rrate -= req->best_parent_rate;
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return rrate;
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req->rate = rrate;
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return 0;
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}
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}
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/*
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/*
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@ -241,7 +241,7 @@ const struct clk_ops clk_ops_hfpll = {
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.enable = clk_hfpll_enable,
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.enable = clk_hfpll_enable,
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.disable = clk_hfpll_disable,
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.disable = clk_hfpll_disable,
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.is_enabled = hfpll_is_enabled,
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.is_enabled = hfpll_is_enabled,
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.round_rate = clk_hfpll_round_rate,
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.determine_rate = clk_hfpll_determine_rate,
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.set_rate = clk_hfpll_set_rate,
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.set_rate = clk_hfpll_set_rate,
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.recalc_rate = clk_hfpll_recalc_rate,
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.recalc_rate = clk_hfpll_recalc_rate,
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.init = clk_hfpll_init,
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.init = clk_hfpll_init,
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