From 203c38fbe833abb47212db77004c05793b7220a3 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Thu, 9 Jul 2020 15:57:29 +0800 Subject: HID: i2c-hid: Enable wakeup capability from Suspend-to-Idle Many laptops can be woken up from Suspend-to-Idle by touchpad. This is also the default behavior on other OSes. However, if touchpad and touchscreen contact to each other when lid is closed, wakeup events can be triggered inadventertly. So let's disable the wakeup by default, but enable the wakeup capability so users can enable it at their own discretion. Signed-off-by: Kai-Heng Feng Reviewed-by: Hans de Goede Signed-off-by: Jiri Kosina --- drivers/hid/i2c-hid/i2c-hid-core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/hid/i2c-hid') diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index d053b86d0e2e..f2c6660ba3d7 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -935,6 +935,14 @@ static void i2c_hid_acpi_fix_up_power(struct device *dev) acpi_device_fix_up_power(adev); } +static void i2c_hid_acpi_enable_wakeup(struct device *dev) +{ + if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) { + device_set_wakeup_capable(dev, true); + device_set_wakeup_enable(dev, false); + } +} + static const struct acpi_device_id i2c_hid_acpi_match[] = { {"ACPI0C50", 0 }, {"PNP0C50", 0 }, @@ -949,6 +957,8 @@ static inline int i2c_hid_acpi_pdata(struct i2c_client *client, } static inline void i2c_hid_acpi_fix_up_power(struct device *dev) {} + +static inline void i2c_hid_acpi_enable_wakeup(struct device *dev) {} #endif #ifdef CONFIG_OF @@ -1076,6 +1086,8 @@ static int i2c_hid_probe(struct i2c_client *client, i2c_hid_acpi_fix_up_power(&client->dev); + i2c_hid_acpi_enable_wakeup(&client->dev); + device_enable_async_suspend(&client->dev); /* Make sure there is something at this address */ -- cgit v1.2.3-59-g8ed1b