From 9b13a4ca8d2c44ca659d8df65f15c48c2e9b9316 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 9 Mar 2017 09:55:49 -0800 Subject: [PATCH] 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 Signed-off-by: Dmitry Torokhov --- drivers/input/misc/axp20x-pek.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c index b7258ecd5a17..f11807db6979 100644 --- a/drivers/input/misc/axp20x-pek.c +++ b/drivers/input/misc/axp20x-pek.c @@ -13,6 +13,7 @@ * GNU General Public License for more details. */ +#include #include #include #include @@ -267,9 +268,17 @@ static int axp20x_pek_probe(struct platform_device *pdev) axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent); - error = axp20x_pek_probe_input_device(axp20x_pek, pdev); - if (error) - return error; + /* + * Do not register the input device if there is an "INTCFD9" + * gpio button ACPI device, that handles the power button too, + * and otherwise we end up reporting all presses twice. + */ + if (!acpi_dev_found("INTCFD9") || + !IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY)) { + error = axp20x_pek_probe_input_device(axp20x_pek, pdev); + if (error) + return error; + } error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group); if (error) { -- 2.11.0