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cpufreq: tegra20: Use resource-managed API

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Switch cpufreq-tegra20 driver to use resource-managed API.
This removes the need to get opp_table pointer using
dev_pm_opp_get_opp_table() in order to release OPP table that
was requested by dev_pm_opp_set_supported_hw(), making the code
a bit more straightforward.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Dmitry Osipenko 2021-01-18 02:18:25 +03:00 committed by Viresh Kumar
parent 5c8fe583cc
commit 763ec5daae
1 changed files with 22 additions and 23 deletions
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45
drivers/cpufreq/tegra20-cpufreq.c
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@ -32,6 +32,16 @@ static bool cpu0_node_has_opp_v2_prop(void)
return ret;
}
static void tegra20_cpufreq_put_supported_hw(void *opp_table)
{
dev_pm_opp_put_supported_hw(opp_table);
}
static void tegra20_cpufreq_dt_unregister(void *cpufreq_dt)
{
platform_device_unregister(cpufreq_dt);
}
static int tegra20_cpufreq_probe(struct platform_device *pdev)
{
struct platform_device *cpufreq_dt;
@ -68,42 +78,31 @@ static int tegra20_cpufreq_probe(struct platform_device *pdev)
return err;
}
err = devm_add_action_or_reset(&pdev->dev,
tegra20_cpufreq_put_supported_hw,
opp_table);
if (err)
return err;
cpufreq_dt = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
err = PTR_ERR_OR_ZERO(cpufreq_dt);
if (err) {
dev_err(&pdev->dev,
"failed to create cpufreq-dt device: %d\n", err);
goto err_put_supported_hw;
return err;
}
platform_set_drvdata(pdev, cpufreq_dt);
return 0;
err_put_supported_hw:
dev_pm_opp_put_supported_hw(opp_table);
return err;
}
static int tegra20_cpufreq_remove(struct platform_device *pdev)
{
struct platform_device *cpufreq_dt;
struct opp_table *opp_table;
cpufreq_dt = platform_get_drvdata(pdev);
platform_device_unregister(cpufreq_dt);
opp_table = dev_pm_opp_get_opp_table(get_cpu_device(0));
dev_pm_opp_put_supported_hw(opp_table);
dev_pm_opp_put_opp_table(opp_table);
err = devm_add_action_or_reset(&pdev->dev,
tegra20_cpufreq_dt_unregister,
cpufreq_dt);
if (err)
return err;
return 0;
}
static struct platform_driver tegra20_cpufreq_driver = {
.probe = tegra20_cpufreq_probe,
.remove = tegra20_cpufreq_remove,
.driver = {
.name = "tegra20-cpufreq",
},