platform/x86: asus-nb-wmi: Allow configuring SW_TABLET_MODE method with a module...

Unfortunately we have been unable to find a reliable way to detect if
and how SW_TABLET_MODE reporting is supported, so we are relying on
DMI quirks for this.

Add a module-option to specify the SW_TABLET_MODE method so that this can
be easily tested without needing to rebuild the kernel.

BugLink: https://gitlab.freedesktop.org/libinput/libinput/-/issues/639
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210812145513.39117-1-hdegoede@redhat.com

diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 0cb927f..9929eed 100644 (file)
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -41,6 +41,10 @@ static int wapf = -1;
 module_param(wapf, uint, 0444);
 MODULE_PARM_DESC(wapf, "WAPF value");
 
+static int tablet_mode_sw = -1;
+module_param(tablet_mode_sw, uint, 0444);
+MODULE_PARM_DESC(tablet_mode_sw, "Tablet mode detect: -1:auto 0:disable 1:kbd-dock 2:lid-flip");
+
 static struct quirk_entry *quirks;
 
 static bool asus_q500a_i8042_filter(unsigned char data, unsigned char str,
@@ -477,6 +481,21 @@ static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
        else
                wapf = quirks->wapf;
 
+       switch (tablet_mode_sw) {
+       case 0:
+               quirks->use_kbd_dock_devid = false;
+               quirks->use_lid_flip_devid = false;
+               break;
+       case 1:
+               quirks->use_kbd_dock_devid = true;
+               quirks->use_lid_flip_devid = false;
+               break;
+       case 2:
+               quirks->use_kbd_dock_devid = false;
+               quirks->use_lid_flip_devid = true;
+               break;
+       }
+
        if (quirks->i8042_filter) {
                ret = i8042_install_filter(quirks->i8042_filter);
                if (ret) {