Commit 0de30fc6 authored by Jeremy Soller's avatar Jeremy Soller Committed by Hans de Goede
Browse files

platform/x86: system76_acpi: Replace Fn+F2 function for OLED models 



System76 laptops models with OLED displays do not support the default
Fn+F2 behavior of turning the embedded display on and off. Some models
instead introduce a new notify event that is used to lock the screen so
the OS will put the display in a low power state.

Signed-off-by: default avatarJeremy Soller <jeremy@system76.com>
Signed-off-by: default avatarTim Crawford <tcrawford@system76.com>
Link: https://lore.kernel.org/r/20211006202202.7479-3-tcrawford@system76.com


Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 95563d45

drivers/platform/x86/system76_acpi.c

+29 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/init.h>

#include <linux/input.h>

#include <linux/kernel.h>

#include <linux/leds.h>

#include <linux/module.h>
@@ -29,6 +30,7 @@ struct system76_data { 
	struct device *therm;

	union acpi_object *nfan;

	union acpi_object *ntmp;

	struct input_dev *input;

};



static const struct acpi_device_id device_ids[] = {
@@ -463,6 +465,15 @@ static const struct hwmon_chip_info thermal_chip_info = { 
	.info = thermal_channel_info,

};



static void input_key(struct system76_data *data, unsigned int code)

{

	input_report_key(data->input, code, 1);

	input_sync(data->input);



	input_report_key(data->input, code, 0);

	input_sync(data->input);

}



// Handle ACPI notification

static void system76_notify(struct acpi_device *acpi_dev, u32 event)

{
@@ -485,6 +496,9 @@ static void system76_notify(struct acpi_device *acpi_dev, u32 event) 
	case 0x84:

		kb_led_hotkey_color(data);

		break;

	case 0x85:

		input_key(data, KEY_SCREENLOCK);

		break;

	}

}
@@ -539,6 +553,20 @@ static int system76_add(struct acpi_device *acpi_dev) 
			return err;

	}



	data->input = devm_input_allocate_device(&acpi_dev->dev);

	if (!data->input)

		return -ENOMEM;



	data->input->name = "System76 ACPI Hotkeys";

	data->input->phys = "system76_acpi/input0";

	data->input->id.bustype = BUS_HOST;

	data->input->dev.parent = &acpi_dev->dev;

	input_set_capability(data->input, EV_KEY, KEY_SCREENLOCK);



	err = input_register_device(data->input);

	if (err)

		goto error;



	err = system76_get_object(data, "NFAN", &data->nfan);

	if (err)

		goto error;
@@ -558,6 +586,7 @@ static int system76_add(struct acpi_device *acpi_dev) 
error:

	kfree(data->ntmp);

	kfree(data->nfan);

	input_free_device(data->input);

	return err;

}