tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'tegra-for-5.17-soc-opp' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into drm/tegra/for-next
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+25
drivers/soc/tegra/common.c
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drivers/soc/tegra/common.c
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#include <linux/export.h>
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#include <linux/of.h>
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#include <linux/pm_opp.h>
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#include <linux/pm_runtime.h>
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#include <soc/tegra/common.h>
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#include <soc/tegra/fuse.h>
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{
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unsigned long rate;
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struct clk *clk;
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bool rpm_enabled;
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int err;
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clk = devm_clk_get(dev, NULL);
···
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return -EINVAL;
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}
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/*
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* Runtime PM of the device must be enabled in order to set up
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* GENPD's performance properly because GENPD core checks whether
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* device is suspended and this check doesn't work while RPM is
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* disabled. This makes sure the OPP vote below gets cached in
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* GENPD for the device. Instead, the vote is done the next time
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* the device gets runtime resumed.
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*/
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rpm_enabled = pm_runtime_enabled(dev);
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if (!rpm_enabled)
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pm_runtime_enable(dev);
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/* should never happen in practice */
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if (!pm_runtime_enabled(dev)) {
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dev_WARN(dev, "failed to enable runtime PM\n");
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pm_runtime_disable(dev);
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return -EINVAL;
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}
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/* first dummy rate-setting initializes voltage vote */
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err = dev_pm_opp_set_rate(dev, rate);
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if (!rpm_enabled)
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pm_runtime_disable(dev);
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if (err) {
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dev_err(dev, "failed to initialize OPP clock: %d\n", err);
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return err;
+15
include/soc/tegra/common.h
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include/soc/tegra/common.h
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}
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#endif
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static inline int
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devm_tegra_core_dev_init_opp_table_common(struct device *dev)
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{
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struct tegra_core_opp_params opp_params = {};
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int err;
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opp_params.init_state = true;
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err = devm_tegra_core_dev_init_opp_table(dev, &opp_params);
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if (err != -ENODEV)
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return err;
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return 0;
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}
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#endif /* __SOC_TEGRA_COMMON_H__ */