Add suspend/resume function in soctherm driver.
Signed-off-by: Wei Ni <wni@xxxxxxxxxx>
---
drivers/thermal/tegra/soctherm.c | 46 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
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,
},
};
--
1.9.1
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