Messages in this thread Patch in this message | | | From | Martin Blumenstingl <> | Subject | [PATCH v2 2/3] clk: divider: Switch from .round_rate to .determine_rate by default | Date | Mon, 24 May 2021 12:37:32 +0200 |
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.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). Switch to a .determine_rate implementation by default so 32-bit systems can benefit from the increased maximum value as well as so we have one fewer user of .round_rate.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> --- drivers/clk/clk-divider.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index 87ba4966b0e8..9e05e81116af 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -425,8 +425,8 @@ long divider_ro_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent, } EXPORT_SYMBOL_GPL(divider_ro_round_rate_parent); -static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int clk_divider_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct clk_divider *divider = to_clk_divider(hw); @@ -437,13 +437,13 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate, val = clk_div_readl(divider) >> divider->shift; val &= clk_div_mask(divider->width); - return divider_ro_round_rate(hw, rate, prate, divider->table, - divider->width, divider->flags, - val); + return divider_ro_determine_rate(hw, req, divider->table, + divider->width, + divider->flags, val); } - return divider_round_rate(hw, rate, prate, divider->table, - divider->width, divider->flags); + return divider_determine_rate(hw, req, divider->table, divider->width, + divider->flags); } int divider_get_val(unsigned long rate, unsigned long parent_rate, @@ -500,14 +500,14 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate, const struct clk_ops clk_divider_ops = { .recalc_rate = clk_divider_recalc_rate, - .round_rate = clk_divider_round_rate, + .determine_rate = clk_divider_determine_rate, .set_rate = clk_divider_set_rate, }; EXPORT_SYMBOL_GPL(clk_divider_ops); const struct clk_ops clk_divider_ro_ops = { .recalc_rate = clk_divider_recalc_rate, - .round_rate = clk_divider_round_rate, + .determine_rate = clk_divider_determine_rate, }; EXPORT_SYMBOL_GPL(clk_divider_ro_ops); -- 2.31.1
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