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Commit 40760717 authored by Oleg Keri's avatar Oleg Keri Committed by Andy Shevchenko
Browse files

platform/x86: ideapad-laptop: Add fn-lock setting 



Some of latest Lenovo ideapad laptops do not have UEFI/BIOS setting for
switching fn-lock mode. This commit adds related acpi calls to ideapad
platform driver. However setting is available via sysfs.

Signed-off-by: default avatarOleg Keri <ezhi99@gmail.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 7caf0c1e

Documentation/ABI/testing/sysfs-platform-ideapad-laptop

+13 −0
Original line number Diff line number Diff line
@@ -25,3 +25,16 @@ Description: 
		Control touchpad mode.

			* 1 -> Switched On

			* 0 -> Switched Off



What:		/sys/bus/pci/devices/<bdf>/<device>/VPC2004:00/fn_lock

Date:		May 2018

KernelVersion:	4.18

Contact:	"Oleg Keri <ezhi99@gmail.com>"

Description:

		Control fn-lock mode.

			* 1 -> Switched On

			* 0 -> Switched Off



		For example:

		# echo "0" >	\

		/sys/bus/pci/devices/0000:00:1f.0/PNP0C09:00/VPC2004:00/fn_lock

drivers/platform/x86/ideapad-laptop.c

+49 −3
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#define IDEAPAD_RFKILL_DEV_NUM	(3)



#define BM_CONSERVATION_BIT (5)

#define HA_FNLOCK_BIT       (10)



#define CFG_BT_BIT	(16)

#define CFG_3G_BIT	(17)
@@ -59,6 +60,8 @@ static const char *const ideapad_wmi_fnesc_events[] = { 
enum {

	BMCMD_CONSERVATION_ON = 3,

	BMCMD_CONSERVATION_OFF = 5,

	HACMD_FNLOCK_ON = 0xe,

	HACMD_FNLOCK_OFF = 0xf,

};



enum {
@@ -139,11 +142,11 @@ static int method_gbmd(acpi_handle handle, unsigned long *ret) 
	return result;

}



static int method_sbmc(acpi_handle handle, int cmd)

static int method_int1(acpi_handle handle, char *method, int cmd)

{

	acpi_status status;



	status = acpi_execute_simple_method(handle, "SBMC", cmd);

	status = acpi_execute_simple_method(handle, method, cmd);

	return ACPI_FAILURE(status) ? -1 : 0;

}
@@ -487,7 +490,7 @@ static ssize_t conservation_mode_store(struct device *dev, 
	if (ret)

		return ret;



	ret = method_sbmc(priv->adev->handle, state ?

	ret = method_int1(priv->adev->handle, "SBMC", state ?

					      BMCMD_CONSERVATION_ON :

					      BMCMD_CONSERVATION_OFF);

	if (ret < 0)
@@ -497,11 +500,51 @@ static ssize_t conservation_mode_store(struct device *dev, 


static DEVICE_ATTR_RW(conservation_mode);



static ssize_t fn_lock_show(struct device *dev,

			    struct device_attribute *attr,

			    char *buf)

{

	struct ideapad_private *priv = dev_get_drvdata(dev);

	unsigned long result;

	int hals;

	int fail = read_method_int(priv->adev->handle, "HALS", &hals);



	if (fail)

		return sprintf(buf, "-1\n");



	result = hals;

	return sprintf(buf, "%u\n", test_bit(HA_FNLOCK_BIT, &result));

}



static ssize_t fn_lock_store(struct device *dev,

			     struct device_attribute *attr,

			     const char *buf, size_t count)

{

	struct ideapad_private *priv = dev_get_drvdata(dev);

	bool state;

	int ret;



	ret = kstrtobool(buf, &state);

	if (ret)

		return ret;



	ret = method_int1(priv->adev->handle, "SALS", state ?

			  HACMD_FNLOCK_ON :

			  HACMD_FNLOCK_OFF);

	if (ret < 0)

		return -EIO;

	return count;

}



static DEVICE_ATTR_RW(fn_lock);





static struct attribute *ideapad_attributes[] = {

	&dev_attr_camera_power.attr,

	&dev_attr_fan_mode.attr,

	&dev_attr_touchpad.attr,

	&dev_attr_conservation_mode.attr,

	&dev_attr_fn_lock.attr,

	NULL

};
@@ -522,6 +565,9 @@ static umode_t ideapad_is_visible(struct kobject *kobj, 
	} else if (attr == &dev_attr_conservation_mode.attr) {

		supported = acpi_has_method(priv->adev->handle, "GBMD") &&

			    acpi_has_method(priv->adev->handle, "SBMC");

	} else if (attr == &dev_attr_fn_lock.attr) {

		supported = acpi_has_method(priv->adev->handle, "HALS") &&

			acpi_has_method(priv->adev->handle, "SALS");

	} else

		supported = true;