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| author | Wei Ni <wni@nvidia.com> | 2016-03-29 18:29:22 +0800 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2016-05-17 07:28:29 -0700 |
| commit | f09d698494289cdf1f0afc0baddbac8db30f195d (patch) | |
| tree | 3645f1e8687424b89b40c1e787d0486bbd3d764d /drivers/thermal/tegra | |
| parent | 1ed895c2a27ebc862241926945f4adcbc88c6cd6 (diff) | |
| download | linux-stable-f09d698494289cdf1f0afc0baddbac8db30f195d.tar.gz linux-stable-f09d698494289cdf1f0afc0baddbac8db30f195d.tar.bz2 linux-stable-f09d698494289cdf1f0afc0baddbac8db30f195d.zip | |
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>
Diffstat (limited to 'drivers/thermal/tegra')
| -rw-r--r-- | drivers/thermal/tegra/soctherm.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c index d2b7c255d71f..559c74279eb8 100644 --- a/drivers/thermal/tegra/soctherm.c +++ b/drivers/thermal/tegra/soctherm.c @@ -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, }, }; |