ACPI: thinkpad-acpi: issue input events for tablet swivel events

Issue EV_SW SW_TABLET_MODE events for HKEY events 0x5009 and 0x500A on the
X41t/X60t/X61t.  As usual, we suppress the HKEY events on the netlink
interface to avoid sending duplicate events to userspace.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 33d6e5a..0ae5708 100644 (file)
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -491,6 +491,8 @@ generate input device EV_KEY events.
 Non hot-key ACPI HKEY event map:
 0x5001         Lid closed
 0x5002         Lid opened
+0x5009         Tablet swivel: switched to tablet mode
+0x500A         Tablet swivel: switched to normal mode
 0x7000         Radio Switch may have changed state
 
 The above events are not propagated by the driver, except for legacy
@@ -505,8 +507,6 @@ The above events are never propagated by the driver.
 
 0x3003         Bay ejection (see 0x2x05) complete, can sleep again
 0x4003         Undocked (see 0x2x04), can sleep again
-0x5009         Tablet swivel: switched to tablet mode
-0x500A         Tablet swivel: switched to normal mode
 0x500B         Tablet pen insterted into its storage bay
 0x500C         Tablet pen removed from its storage bay
 0x5010         Brightness level changed (newer Lenovo BIOSes)

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 4ea3866..3548350 100644 (file)
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -1172,6 +1172,17 @@ static void tpacpi_input_send_radiosw(void)
        mutex_unlock(&tpacpi_inputdev_send_mutex);
 }
 
+static void tpacpi_input_send_tabletsw(unsigned int state)
+{
+       mutex_lock(&tpacpi_inputdev_send_mutex);
+
+       input_report_switch(tpacpi_inputdev,
+                           SW_TABLET_MODE, !!state);
+       input_sync(tpacpi_inputdev);
+
+       mutex_unlock(&tpacpi_inputdev_send_mutex);
+}
+
 static void tpacpi_input_send_key(unsigned int scancode)
 {
        unsigned int keycode;
@@ -2020,6 +2031,10 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                        set_bit(EV_SW, tpacpi_inputdev->evbit);
                        set_bit(SW_RADIO, tpacpi_inputdev->swbit);
                }
+               if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
+                       set_bit(EV_SW, tpacpi_inputdev->evbit);
+                       set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
+               }
 
                dbg_printk(TPACPI_DBG_INIT,
                                "enabling hot key handling\n");
@@ -2169,11 +2184,14 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
                        /* 0x5000-0x5FFF: human interface helpers */
                        switch (hkey) {
                        case 0x5010: /* Lenovo new BIOS: brightness changed */
-                       case 0x5009: /* X61t: swivel up (tablet mode) */
-                       case 0x500a: /* X61t: swivel down (normal mode) */
                        case 0x500b: /* X61t: tablet pen inserted into bay */
                        case 0x500c: /* X61t: tablet pen removed from bay */
                                break;
+                       case 0x5009: /* X61t: swivel up (tablet mode) */
+                       case 0x500a: /* X61t: swivel down (normal mode) */
+                               tpacpi_input_send_tabletsw((hkey == 0x5009));
+                               send_acpi_ev = 0;
+                               break;
                        case 0x5001:
                        case 0x5002:
                                /* LID switch events.  Do not propagate */