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iio: adc: sun4i-gpadc-iio: register in the thermal after registering in pm 

This driver has a get_temp function used by the thermal framework that
uses pm functions.

However, the driver isn't registered in pm before it is registered in
thermal framework, resulting in the pm_resume not being called and thus
the IP not enabled.

When the IP is disabled, the raw temp value is always 0. With the
devices currently supported, it isn't a problem since with their
respective formula, they return a really cold SoC temperature which
isn't a problem for the thermal framework. But for future SoC that have
a different formula, it could return a critically hot temperature,
forcing the thermal framework to shutdown the board.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Quentin Schulz 2017-09-26 14:52:18 +02:00 committed by Jonathan Cameron
parent d632a2bd8f
commit b0a242894f
1 changed files with 15 additions and 19 deletions
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32
drivers/iio/adc/sun4i-gpadc-iio.c
View File

@ -528,17 +528,10 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
return ret;
}
if (!IS_ENABLED(CONFIG_THERMAL_OF))
return 0;
if (IS_ENABLED(CONFIG_THERMAL_OF))
info->sensor_device = &pdev->dev;
info->tzd = thermal_zone_of_sensor_register(info->sensor_device, 0,
info, &sun4i_ts_tz_ops);
if (IS_ERR(info->tzd))
dev_err(&pdev->dev, "could not register thermal sensor: %ld\n",
PTR_ERR(info->tzd));
return PTR_ERR_OR_ZERO(info->tzd);
return 0;
}
static int sun4i_gpadc_probe_mfd(struct platform_device *pdev,
@ -585,15 +578,6 @@ static int sun4i_gpadc_probe_mfd(struct platform_device *pdev,
* return the temperature.
*/
info->sensor_device = pdev->dev.parent;
info->tzd = thermal_zone_of_sensor_register(info->sensor_device,
0, info,
&sun4i_ts_tz_ops);
if (IS_ERR(info->tzd)) {
dev_err(&pdev->dev,
"could not register thermal sensor: %ld\n",
PTR_ERR(info->tzd));
return PTR_ERR(info->tzd);
}
} else {
indio_dev->num_channels =
ARRAY_SIZE(sun4i_gpadc_channels_no_temp);
@ -663,6 +647,18 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_enable(&pdev->dev);
if (IS_ENABLED(CONFIG_THERMAL_OF)) {
info->tzd = thermal_zone_of_sensor_register(info->sensor_device,
0, info,
&sun4i_ts_tz_ops);
if (IS_ERR(info->tzd)) {
dev_err(&pdev->dev,
"could not register thermal sensor: %ld\n",
PTR_ERR(info->tzd));
return PTR_ERR(info->tzd);
}
}
ret = devm_iio_device_register(&pdev->dev, indio_dev);
if (ret < 0) {
dev_err(&pdev->dev, "could not register the device\n");