Patch by Olivier Coursiere: Reset the touchpad mode when closing the device.

Will be useful when (input) devices are closed during shutdown. (app_server
and input_server are never quit during shutdown, so the drivers are not closed
either.) Apparently, the touchpad will remain as configured before, on a soft
reset which confuses for example BeOS, when it's booted after Haiku.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29920 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/bus_managers/ps2/ps2_dev.c

@@ -66,7 +66,7 @@ ps2_dev ps2_device[PS2_DEVICE_COUNT] = {
 };
 
 
-static status_t
+status_t
 ps2_reset_mouse(ps2_dev *dev)
 {
 	uint8 data[2];

src/add-ons/kernel/bus_managers/ps2/ps2_dev.h

@@ -74,6 +74,8 @@ status_t	ps2_dev_command(ps2_dev *dev, uint8 cmd, const uint8 *out,
 status_t	ps2_dev_command_timeout(ps2_dev *dev, uint8 cmd, const uint8 *out,
 				int out_count, uint8 *in, int in_count, bigtime_t timeout);
 
+status_t	ps2_reset_mouse(ps2_dev *dev);
+
 void		ps2_dev_publish(ps2_dev *dev);
 void		ps2_dev_unpublish(ps2_dev *dev);
 

src/add-ons/kernel/bus_managers/ps2/ps2_synaptics.c

@@ -630,6 +630,7 @@ err1:
 status_t
 synaptics_close(void *_cookie)
 {
+	status_t status;
 	synaptics_cookie *cookie = _cookie;
 
 	ps2_dev_command_timeout(cookie->dev, PS2_CMD_DISABLE, NULL, 0, NULL, 0,
@@ -641,6 +642,15 @@ synaptics_close(void *_cookie)
 	atomic_and(&cookie->dev->flags, ~PS2_FLAG_OPEN);
 	atomic_and(&cookie->dev->flags, ~PS2_FLAG_ENABLED);
 
+	// Reset the touchpad so it generate standard ps2 packets instead of
+	// extended ones. If not, BeOS is confused with such packets when rebooting
+	// without a complete shutdown.
+	status = ps2_reset_mouse(cookie->dev);
+	if (status != B_OK) {
+		INFO("ps2: reset failed\n");
+		return B_ERROR;
+	}
+		
 	if (gTouchpadInfo.capPassThrough)
 		ps2_service_notify_device_removed(gPassthroughDevice);