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HID: i2c-hid: Enable wakeup capability from Suspend-to-Idle

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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 <kai.heng.feng@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Kai-Heng Feng 2020-07-09 15:57:29 +08:00 committed by Jiri Kosina
parent eafb220362
commit 203c38fbe8
1 changed files with 12 additions and 0 deletions
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12
drivers/hid/i2c-hid/i2c-hid-core.c
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@ -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 */