gpio-lynxpoint: enable input sensing in resume
It appears that input sensing bit might be reset during suspend/resume. Set input sensing again for all requested gpios in resume Tested-by: Jerome Blin <jerome.blin@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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@ -407,9 +407,27 @@ static int lp_gpio_runtime_resume(struct device *dev)
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return 0;
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}
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static int lp_gpio_resume(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct lp_gpio *lg = platform_get_drvdata(pdev);
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unsigned long reg;
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int i;
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/* on some hardware suspend clears input sensing, re-enable it here */
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for (i = 0; i < lg->chip.ngpio; i++) {
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if (gpiochip_is_requested(&lg->chip, i) != NULL) {
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reg = lp_gpio_reg(&lg->chip, i, LP_CONFIG2);
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outl(inl(reg) & ~GPINDIS_BIT, reg);
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}
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}
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return 0;
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}
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static const struct dev_pm_ops lp_gpio_pm_ops = {
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.runtime_suspend = lp_gpio_runtime_suspend,
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.runtime_resume = lp_gpio_runtime_resume,
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.resume = lp_gpio_resume,
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};
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static const struct acpi_device_id lynxpoint_gpio_acpi_match[] = {
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