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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: Oleg Keri <ezhi99@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Oleg Keri 2018-05-13 19:05:07 +03:00 committed by Andy Shevchenko
parent 7caf0c1efd
commit 40760717f9
2 changed files with 62 additions and 3 deletions
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13
Documentation/ABI/testing/sysfs-platform-ideapad-laptop
View File

@ -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

52
drivers/platform/x86/ideapad-laptop.c
View File

@ -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;