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thermal: tegra: add PM support 

Add suspend/resume function in soctherm driver.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
hifive-unleashed-5.1
Wei Ni 2016-03-29 18:29:22 +08:00 committed by Eduardo Valentin
parent 1ed895c2a2
commit f09d698494
1 changed files with 46 additions and 0 deletions
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46
drivers/thermal/tegra/soctherm.c
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@ -88,6 +88,7 @@ struct tegra_soctherm {
struct clk *clock_tsensor;
struct clk *clock_soctherm;
void __iomem *regs;
struct thermal_zone_device **thermctl_tzs;
u32 *calib;
struct tegra_soctherm_soc *soc;
@ -566,6 +567,12 @@ static int tegra_soctherm_probe(struct platform_device *pdev)
return err;
}
tegra->thermctl_tzs = devm_kzalloc(&pdev->dev,
sizeof(*z) * soc->num_ttgs,
GFP_KERNEL);
if (!tegra->thermctl_tzs)
return -ENOMEM;
err = soctherm_clk_enable(pdev, true);
if (err)
return err;
@ -595,6 +602,7 @@ static int tegra_soctherm_probe(struct platform_device *pdev)
}
zone->tz = z;
tegra->thermctl_tzs[soc->ttgs[i]->id] = z;
/* Configure hw trip points */
tegra_soctherm_set_hwtrips(&pdev->dev, soc->ttgs[i], z);
@ -621,11 +629,49 @@ static int tegra_soctherm_remove(struct platform_device *pdev)
return 0;
}
static int soctherm_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
soctherm_clk_enable(pdev, false);
return 0;
}
static int soctherm_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
struct tegra_soctherm_soc *soc = tegra->soc;
int err, i;
err = soctherm_clk_enable(pdev, true);
if (err) {
dev_err(&pdev->dev,
"Resume failed: enable clocks failed\n");
return err;
}
soctherm_init(pdev);
for (i = 0; i < soc->num_ttgs; ++i) {
struct thermal_zone_device *tz;
tz = tegra->thermctl_tzs[soc->ttgs[i]->id];
tegra_soctherm_set_hwtrips(dev, soc->ttgs[i], tz);
}
return 0;
}
static SIMPLE_DEV_PM_OPS(tegra_soctherm_pm, soctherm_suspend, soctherm_resume);
static struct platform_driver tegra_soctherm_driver = {
.probe = tegra_soctherm_probe,
.remove = tegra_soctherm_remove,
.driver = {
.name = "tegra_soctherm",
.pm = &tegra_soctherm_pm,
.of_match_table = tegra_soctherm_of_match,
},
};