diff options
Diffstat (limited to 'drivers/platform/x86/lenovo-ymc.c')
| -rw-r--r-- | drivers/platform/x86/lenovo-ymc.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/platform/x86/lenovo-ymc.c b/drivers/platform/x86/lenovo-ymc.c index 41676188b373..f360370d5002 100644 --- a/drivers/platform/x86/lenovo-ymc.c +++ b/drivers/platform/x86/lenovo-ymc.c @@ -24,6 +24,10 @@ static bool ec_trigger __read_mostly; module_param(ec_trigger, bool, 0444); MODULE_PARM_DESC(ec_trigger, "Enable EC triggering work-around to force emitting tablet mode events"); +static bool force; +module_param(force, bool, 0444); +MODULE_PARM_DESC(force, "Force loading on boards without a convertible DMI chassis-type"); + static const struct dmi_system_id ec_trigger_quirk_dmi_table[] = { { /* Lenovo Yoga 7 14ARB7 */ @@ -35,6 +39,20 @@ static const struct dmi_system_id ec_trigger_quirk_dmi_table[] = { { } }; +static const struct dmi_system_id allowed_chasis_types_dmi_table[] = { + { + .matches = { + DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "31" /* Convertible */), + }, + }, + { + .matches = { + DMI_EXACT_MATCH(DMI_CHASSIS_TYPE, "32" /* Detachable */), + }, + }, + { } +}; + struct lenovo_ymc_private { struct input_dev *input_dev; struct acpi_device *ec_acpi_dev; @@ -111,6 +129,13 @@ static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx) struct input_dev *input_dev; int err; + if (!dmi_check_system(allowed_chasis_types_dmi_table)) { + if (force) + dev_info(&wdev->dev, "Force loading Lenovo YMC support\n"); + else + return -ENODEV; + } + ec_trigger |= dmi_check_system(ec_trigger_quirk_dmi_table); priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL); |