Input: axp20x-pek - do not register input device on some systems
On some systems (Intel tablets with axp288 pmic) the powerbutton is also connected to a gpio pin of the SoC, advertised through the "INTCFD9" / "PNP0C40" acpi device. This leads to double reporting of powerbutton events, which is undesirable, so one driver needs to not report input events in this case. Since the soc_button_array driver for the "PNP0C40" acpi device also handles wake from suspend on these tablets and since the axp20x-pel driver requires relative expensive i2c accrsses, it is best for the axp20x-pek driver to not register an input device in this case. Note that this commit leaves the axp20x-driver bound to the device, rather then returning -ENODEV, this is done so that the sysfs attributes it offers are kept around. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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@ -13,6 +13,7 @@
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* GNU General Public License for more details.
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*/
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#include <linux/acpi.h>
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#include <linux/errno.h>
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#include <linux/irq.h>
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#include <linux/init.h>
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@ -267,9 +268,17 @@ static int axp20x_pek_probe(struct platform_device *pdev)
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axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
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error = axp20x_pek_probe_input_device(axp20x_pek, pdev);
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if (error)
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return error;
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/*
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* Do not register the input device if there is an "INTCFD9"
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* gpio button ACPI device, that handles the power button too,
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* and otherwise we end up reporting all presses twice.
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*/
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if (!acpi_dev_found("INTCFD9") ||
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!IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY)) {
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error = axp20x_pek_probe_input_device(axp20x_pek, pdev);
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if (error)
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return error;
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}
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error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
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if (error) {
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