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clk: qcom: clk-rcg: add clk_rcg_floor_ops ops

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Add clk_rcg_floor_ops for clock that can't provide a stable freq and
require to use a floor freq to provide the requested frequency.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Tested-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220226135235.10051-10-ansuelsmth@gmail.com
This commit is contained in:
Ansuel Smith 2022-02-26 14:52:29 +01:00 committed by Bjorn Andersson
parent 28aa450d38
commit 33958ad3fc
2 changed files with 25 additions and 0 deletions
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24
drivers/clk/qcom/clk-rcg.c
View file

@ -526,6 +526,19 @@ static int clk_rcg_set_rate(struct clk_hw *hw, unsigned long rate,
return __clk_rcg_set_rate(rcg, f);
}
static int clk_rcg_set_floor_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_rcg *rcg = to_clk_rcg(hw);
const struct freq_tbl *f;
f = qcom_find_freq_floor(rcg->freq_tbl, rate);
if (!f)
return -EINVAL;
return __clk_rcg_set_rate(rcg, f);
}
static int clk_rcg_bypass_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
@ -816,6 +829,17 @@ const struct clk_ops clk_rcg_ops = {
};
EXPORT_SYMBOL_GPL(clk_rcg_ops);
const struct clk_ops clk_rcg_floor_ops = {
.enable = clk_enable_regmap,
.disable = clk_disable_regmap,
.get_parent = clk_rcg_get_parent,
.set_parent = clk_rcg_set_parent,
.recalc_rate = clk_rcg_recalc_rate,
.determine_rate = clk_rcg_determine_rate,
.set_rate = clk_rcg_set_floor_rate,
};
EXPORT_SYMBOL_GPL(clk_rcg_floor_ops);
const struct clk_ops clk_rcg_bypass_ops = {
.enable = clk_enable_regmap,
.disable = clk_disable_regmap,

1
drivers/clk/qcom/clk-rcg.h
View file

@ -86,6 +86,7 @@ struct clk_rcg {
};
extern const struct clk_ops clk_rcg_ops;
extern const struct clk_ops clk_rcg_floor_ops;
extern const struct clk_ops clk_rcg_bypass_ops;
extern const struct clk_ops clk_rcg_bypass2_ops;
extern const struct clk_ops clk_rcg_pixel_ops;