Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9dfe1a2f authored by Marc Gonzalez's avatar Marc Gonzalez Committed by Zhang Rui
Browse files

thermal: tango: add resume support 



When this platform is suspended, firmware powers the entire SoC down,
except a few hardware blocks waiting for wakeup events. There is no
context to save for this particular block.

Therefore, there is nothing useful for the driver to do on suspend;
so we define a NULL suspend hook. On resume, the driver initializes
the block exactly as is done in the probe callback.

Signed-off-by: default avatarMarc Gonzalez <marc_gonzalez@sigmadesigns.com>
Reviewed-by: default avatarKevin Hilman <khilman@baylibre.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent e3da1cbe

drivers/thermal/tango_thermal.c

+17 −2
Original line number Diff line number Diff line
@@ -64,6 +64,12 @@ static const struct thermal_zone_of_device_ops ops = { 
	.get_temp	= tango_get_temp,

};



static void tango_thermal_init(struct tango_thermal_priv *priv)

{

	writel(0, priv->base + TEMPSI_CFG);

	writel(CMD_ON, priv->base + TEMPSI_CMD);

}



static int tango_thermal_probe(struct platform_device *pdev)

{

	struct resource *res;
@@ -79,14 +85,22 @@ static int tango_thermal_probe(struct platform_device *pdev) 
	if (IS_ERR(priv->base))

		return PTR_ERR(priv->base);



	platform_set_drvdata(pdev, priv);

	priv->thresh_idx = IDX_MIN;

	writel(0, priv->base + TEMPSI_CFG);

	writel(CMD_ON, priv->base + TEMPSI_CMD);

	tango_thermal_init(priv);



	tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, priv, &ops);

	return PTR_ERR_OR_ZERO(tzdev);

}



static int __maybe_unused tango_thermal_resume(struct device *dev)

{

	tango_thermal_init(dev_get_drvdata(dev));

	return 0;

}



static SIMPLE_DEV_PM_OPS(tango_thermal_pm, NULL, tango_thermal_resume);



static const struct of_device_id tango_sensor_ids[] = {

	{

		.compatible = "sigma,smp8758-thermal",
@@ -99,6 +113,7 @@ static struct platform_driver tango_thermal_driver = { 
	.driver	= {

		.name		= "tango-thermal",

		.of_match_table	= tango_sensor_ids,

		.pm		= &tango_thermal_pm,

	},

};