diff options
| -rw-r--r-- | Documentation/laptops/thinkpad-acpi.txt | 1 | ||||
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 39 |
2 files changed, 36 insertions, 4 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index 72a150d8f3df..ba2e7d254842 100644 --- a/Documentation/laptops/thinkpad-acpi.txt +++ b/Documentation/laptops/thinkpad-acpi.txt @@ -540,6 +540,7 @@ Events that are propagated by the driver to userspace: 0x6022 ALARM: a sensor is extremely hot 0x6030 System thermal table changed 0x6040 Nvidia Optimus/AC adapter related (TO BE VERIFIED) +0x60C0 X1 Yoga 2016, Tablet mode status changed Battery nearly empty alarms are a last resort attempt to get the operating system to hibernate or shutdown cleanly (0x2313), or shutdown diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index f3053de25cc5..cd956de7c1b2 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -190,6 +190,9 @@ enum tpacpi_hkey_event_t { TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ + TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): + * enter/leave tablet mode + */ TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ @@ -305,6 +308,8 @@ static struct { enum { TP_HOTKEY_TABLET_NONE = 0, TP_HOTKEY_TABLET_USES_MHKG, + /* X1 Yoga 2016, seen on BIOS N1FET44W */ + TP_HOTKEY_TABLET_USES_CMMD, } hotkey_tablet; u32 kbdlight:1; u32 light:1; @@ -2062,6 +2067,8 @@ static void hotkey_poll_setup(const bool may_warn); /* HKEY.MHKG() return bits */ #define TP_HOTKEY_TABLET_MASK (1 << 3) +/* ThinkPad X1 Yoga (2016) */ +#define TP_EC_CMMD_TABLET_MODE 0x6 static int hotkey_get_wlsw(void) { @@ -2086,10 +2093,23 @@ static int hotkey_get_tablet_mode(int *status) { int s; - if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) - return -EIO; + switch (tp_features.hotkey_tablet) { + case TP_HOTKEY_TABLET_USES_MHKG: + if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) + return -EIO; + + *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); + break; + case TP_HOTKEY_TABLET_USES_CMMD: + if (!acpi_evalf(ec_handle, &s, "CMMD", "d")) + return -EIO; + + *status = (s == TP_EC_CMMD_TABLET_MODE); + break; + default: + break; + } - *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); return 0; } @@ -3125,11 +3145,16 @@ static int hotkey_init_tablet_mode(void) int in_tablet_mode, res; char *type; - /* For X41t, X60t, X61t Tablets... */ if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { + /* For X41t, X60t, X61t Tablets... */ tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); type = "MHKG"; + } else if (acpi_evalf(ec_handle, &res, "CMMD", "qd")) { + /* For X1 Yoga (2016) */ + tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_CMMD; + in_tablet_mode = res == TP_EC_CMMD_TABLET_MODE; + type = "CMMD"; } if (!tp_features.hotkey_tablet) @@ -3921,6 +3946,12 @@ static bool hotkey_notify_6xxx(const u32 hkey, *ignore_acpi_ev = true; return true; + case TP_HKEY_EV_TABLET_CHANGED: + tpacpi_input_send_tabletsw(); + hotkey_tablet_mode_notify_change(); + *send_acpi_ev = false; + break; + default: pr_warn("unknown possible thermal alarm or keyboard event received\n"); known = false; |
