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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2022-06-10 12:37:25 +0530 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2022-07-12 20:35:21 +0530 |
| commit | 8174a3a613af1a911ab19da812824f7180b261f9 (patch) | |
| tree | d56627983b12da3576050ffbf132faf2f5c588e0 /drivers/opp | |
| parent | f123ea74511dfab70598cd584a11ad596454a689 (diff) | |
| download | linux-8174a3a613af1a911ab19da812824f7180b261f9.tar.bz2 | |
OPP: Provide a simple implementation to configure multiple clocks
This provides a simple implementation to configure multiple clocks for a
device.
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp')
| -rw-r--r-- | drivers/opp/core.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 4675a00b9816..0c5b12e99d39 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -843,6 +843,40 @@ _opp_config_clk_single(struct device *dev, struct opp_table *opp_table, return ret; } +/* + * Simple implementation for configuring multiple clocks. Configure clocks in + * the order in which they are present in the array while scaling up. + */ +int dev_pm_opp_config_clks_simple(struct device *dev, + struct opp_table *opp_table, struct dev_pm_opp *opp, void *data, + bool scaling_down) +{ + int ret, i; + + if (scaling_down) { + for (i = opp_table->clk_count - 1; i >= 0; i--) { + ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); + if (ret) { + dev_err(dev, "%s: failed to set clock rate: %d\n", __func__, + ret); + return ret; + } + } + } else { + for (i = 0; i < opp_table->clk_count; i++) { + ret = clk_set_rate(opp_table->clks[i], opp->rates[i]); + if (ret) { + dev_err(dev, "%s: failed to set clock rate: %d\n", __func__, + ret); + return ret; + } + } + } + + return ret; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_config_clks_simple); + static int _opp_config_regulator_single(struct device *dev, struct dev_pm_opp *old_opp, struct dev_pm_opp *new_opp, struct regulator **regulators, unsigned int count) |