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iio: adc: qcom-spmi-adc5-gen3: add hibernation support

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Free the ADC interrupt before entering into hibernation and
request the interrupts again after restore from hibernation.

Change-Id: I7f1d87a90da4d080e8ccefa066e3a210685a1375
Signed-off-by: Hui Liu <quic_huliu@quicinc.com>
This commit is contained in:
Hui Liu 2022-08-11 15:17:46 +08:00 committed by Anjelique Melendez
parent ec6dcfacd3
commit 756a59e321
1 changed files with 37 additions and 0 deletions
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37
drivers/iio/adc/qcom-spmi-adc5-gen3.c
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@ -1773,10 +1773,47 @@ static int adc5_gen3_exit(struct platform_device *pdev)
return 0;
}
static int adc5_gen3_freeze(struct device *dev)
{
struct adc5_chip *adc = dev_get_drvdata(dev);
int i = 0;
mutex_lock(&adc->lock);
for (i = 0; i < adc->num_sdams; i++)
devm_free_irq(dev, adc->base[i].irq, adc);
mutex_unlock(&adc->lock);
return 0;
}
static int adc5_gen3_restore(struct device *dev)
{
struct adc5_chip *adc = dev_get_drvdata(dev);
int i = 0;
int ret = 0;
for (i = 0; i < adc->num_sdams; i++) {
ret = devm_request_irq(dev, adc->base[i].irq, adc5_gen3_isr,
0, adc->base[i].irq_name, adc);
if (ret < 0)
return ret;
}
return ret;
}
static const struct dev_pm_ops adc5_gen3_pm_ops = {
.freeze = adc5_gen3_freeze,
.restore = adc5_gen3_restore,
};
static struct platform_driver adc5_gen3_driver = {
.driver = {
.name = "qcom-spmi-adc5-gen3",
.of_match_table = adc5_match_table,
.pm = &adc5_gen3_pm_ops,
},
.probe = adc5_gen3_probe,
.remove = adc5_gen3_exit,