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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: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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parent
e3da1cbed6
commit
9dfe1a2f9a
1 changed files with 17 additions and 2 deletions
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@ -64,6 +64,12 @@ static const struct thermal_zone_of_device_ops ops = {
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.get_temp = tango_get_temp,
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};
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static void tango_thermal_init(struct tango_thermal_priv *priv)
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{
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writel(0, priv->base + TEMPSI_CFG);
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writel(CMD_ON, priv->base + TEMPSI_CMD);
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}
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static int tango_thermal_probe(struct platform_device *pdev)
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{
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struct resource *res;
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@ -79,14 +85,22 @@ static int tango_thermal_probe(struct platform_device *pdev)
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if (IS_ERR(priv->base))
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return PTR_ERR(priv->base);
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platform_set_drvdata(pdev, priv);
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priv->thresh_idx = IDX_MIN;
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writel(0, priv->base + TEMPSI_CFG);
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writel(CMD_ON, priv->base + TEMPSI_CMD);
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tango_thermal_init(priv);
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tzdev = devm_thermal_zone_of_sensor_register(&pdev->dev, 0, priv, &ops);
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return PTR_ERR_OR_ZERO(tzdev);
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}
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static int __maybe_unused tango_thermal_resume(struct device *dev)
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{
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tango_thermal_init(dev_get_drvdata(dev));
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return 0;
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}
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static SIMPLE_DEV_PM_OPS(tango_thermal_pm, NULL, tango_thermal_resume);
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static const struct of_device_id tango_sensor_ids[] = {
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{
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.compatible = "sigma,smp8758-thermal",
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@ -99,6 +113,7 @@ static struct platform_driver tango_thermal_driver = {
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.driver = {
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.name = "tango-thermal",
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.of_match_table = tango_sensor_ids,
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.pm = &tango_thermal_pm,
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},
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};
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