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platform/x86: asus-wmi: Add support for SW_TABLET_MODE

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On Asus 2-in-1s with a detachable keyboard the Asus WMI interface
reports if the tablet is attached to the keyboard or not.

Report if the 2-in-1 is in tablet or clamshell mode to userspace
by reporting SW_TABLET_MODE events to userspace.

This has been tested on a T100TA, T100CHI, T100HA and T200TA.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Hans de Goede 2020-05-10 14:24:31 +02:00 committed by Andy Shevchenko
parent fed5003d80
commit b0dbd97de1
2 changed files with 25 additions and 2 deletions
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24
drivers/platform/x86/asus-wmi.c
View File

@ -57,6 +57,7 @@ MODULE_LICENSE("GPL");
#define NOTIFY_BRNDOWN_MIN 0x20 #define NOTIFY_BRNDOWN_MIN 0x20
#define NOTIFY_BRNDOWN_MAX 0x2e #define NOTIFY_BRNDOWN_MAX 0x2e
#define NOTIFY_FNLOCK_TOGGLE 0x4e #define NOTIFY_FNLOCK_TOGGLE 0x4e
#define NOTIFY_KBD_DOCK_CHANGE 0x75
#define NOTIFY_KBD_BRTUP 0xc4 #define NOTIFY_KBD_BRTUP 0xc4
#define NOTIFY_KBD_BRTDWN 0xc5 #define NOTIFY_KBD_BRTDWN 0xc5
#define NOTIFY_KBD_BRTTOGGLE 0xc7 #define NOTIFY_KBD_BRTTOGGLE 0xc7
@ -346,7 +347,7 @@ static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
static int asus_wmi_input_init(struct asus_wmi *asus) static int asus_wmi_input_init(struct asus_wmi *asus)
{ {
int err; int err, result;
asus->inputdev = input_allocate_device(); asus->inputdev = input_allocate_device();
if (!asus->inputdev) if (!asus->inputdev)
@ -362,6 +363,14 @@ static int asus_wmi_input_init(struct asus_wmi *asus)
if (err) if (err)
goto err_free_dev; goto err_free_dev;
result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
if (result >= 0) {
input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
} else if (result != -ENODEV) {
pr_err("Error checking for keyboard-dock: %d\n", result);
}
err = input_register_device(asus->inputdev); err = input_register_device(asus->inputdev);
if (err) if (err)
goto err_free_dev; goto err_free_dev;
@ -2055,9 +2064,9 @@ static int asus_wmi_get_event_code(u32 value)
static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus) static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
{ {
int orig_code;
unsigned int key_value = 1; unsigned int key_value = 1;
bool autorelease = 1; bool autorelease = 1;
int result, orig_code;
orig_code = code; orig_code = code;
@ -2102,6 +2111,17 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
return; return;
} }
if (code == NOTIFY_KBD_DOCK_CHANGE) {
result = asus_wmi_get_devstate_simple(asus,
ASUS_WMI_DEVID_KBD_DOCK);
if (result >= 0) {
input_report_switch(asus->inputdev, SW_TABLET_MODE,
!result);
input_sync(asus->inputdev);
}
return;
}
if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) { if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
fan_boost_mode_switch_next(asus); fan_boost_mode_switch_next(asus);
return; return;

3
include/linux/platform_data/x86/asus-wmi.h
View File

@ -85,6 +85,9 @@
/* Maximum charging percentage */ /* Maximum charging percentage */
#define ASUS_WMI_DEVID_RSOC 0x00120057 #define ASUS_WMI_DEVID_RSOC 0x00120057
/* Keyboard dock */
#define ASUS_WMI_DEVID_KBD_DOCK 0x00120063
/* DSTS masks */ /* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002