diff options
| author | Luca Weiss <luca@z3ntu.xyz> | 2023-02-12 15:11:09 +0100 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-03-13 16:38:24 -0700 |
| commit | 04648b8fad219599ccc9b103188a38e72d339a3d (patch) | |
| tree | fbdaf43986e25de8cb26b75425ac2b3b861767b2 /drivers/clk/qcom | |
| parent | a7074c3eb26e0193f2c6ed79987e633b7578024e (diff) | |
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
Diffstat (limited to 'drivers/clk/qcom')
| -rw-r--r-- | drivers/clk/qcom/clk-hfpll.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/clk/qcom/clk-hfpll.c b/drivers/clk/qcom/clk-hfpll.c index 7dd17c184b69..86f728dc69e5 100644 --- a/drivers/clk/qcom/clk-hfpll.c +++ b/drivers/clk/qcom/clk-hfpll.c @@ -128,20 +128,20 @@ static void clk_hfpll_disable(struct clk_hw *hw) spin_unlock_irqrestore(&h->lock, flags); } -static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *parent_rate) +static int clk_hfpll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req) { struct clk_hfpll *h = to_clk_hfpll(hw); struct hfpll_data const *hd = h->d; unsigned long rrate; - rate = clamp(rate, hd->min_rate, hd->max_rate); + req->rate = clamp(req->rate, hd->min_rate, hd->max_rate); - rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate; + rrate = DIV_ROUND_UP(req->rate, req->best_parent_rate) * req->best_parent_rate; if (rrate > hd->max_rate) - rrate -= *parent_rate; + rrate -= req->best_parent_rate; - return rrate; + req->rate = rrate; + return 0; } /* @@ -241,7 +241,7 @@ const struct clk_ops clk_ops_hfpll = { .enable = clk_hfpll_enable, .disable = clk_hfpll_disable, .is_enabled = hfpll_is_enabled, - .round_rate = clk_hfpll_round_rate, + .determine_rate = clk_hfpll_determine_rate, .set_rate = clk_hfpll_set_rate, .recalc_rate = clk_hfpll_recalc_rate, .init = clk_hfpll_init, |