Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
[~shefty/rdma-dev.git] / drivers / platform / x86 / thinkpad_acpi.c
index f4f8408..9a90756 100644 (file)
@@ -209,9 +209,8 @@ enum tpacpi_hkey_event_t {
        TP_HKEY_EV_ALARM_SENSOR_XHOT    = 0x6022, /* sensor critically hot */
        TP_HKEY_EV_THM_TABLE_CHANGED    = 0x6030, /* thermal table changed */
 
-       TP_HKEY_EV_UNK_6040             = 0x6040, /* Related to AC change?
-                                                    some sort of APM hint,
-                                                    W520 */
+       /* AC-related events */
+       TP_HKEY_EV_AC_CHANGED           = 0x6040, /* AC status changed */
 
        /* Misc */
        TP_HKEY_EV_RFKILL_CHANGED       = 0x7000, /* rfkill switch changed */
@@ -3629,6 +3628,12 @@ static bool hotkey_notify_6xxx(const u32 hkey,
                         "a sensor reports something is extremely hot!\n");
                /* recommended action: immediate sleep/hibernate */
                break;
+       case TP_HKEY_EV_AC_CHANGED:
+               /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
+                * AC status changed; can be triggered by plugging or
+                * unplugging AC adapter, docking or undocking. */
+
+               /* fallthrough */
 
        case TP_HKEY_EV_KEY_NUMLOCK:
        case TP_HKEY_EV_KEY_FN:
@@ -8574,7 +8579,8 @@ static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
        return s && strlen(s) >= 8 &&
                tpacpi_is_fw_digit(s[0]) &&
                tpacpi_is_fw_digit(s[1]) &&
-               s[2] == t && s[3] == 'T' &&
+               s[2] == t &&
+               (s[3] == 'T' || s[3] == 'N') &&
                tpacpi_is_fw_digit(s[4]) &&
                tpacpi_is_fw_digit(s[5]);
 }
@@ -8607,7 +8613,8 @@ static int __must_check __init get_thinkpad_model_data(
                return -ENOMEM;
 
        /* Really ancient ThinkPad 240X will fail this, which is fine */
-       if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
+       if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
+             tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
                return 0;
 
        tp->bios_model = tp->bios_version_str[0]