[PATCH 2.6.38.7] xpad: Implemented rumble support for wireless controllers
From: Chris Moeller <hidden>
Date: 2011-06-12 19:29:47
Implements rumble support for XBox360 Wireless Controllers. Signed-off-by: Chris Moeller <redacted> --- I finally returned from my weeks of idling around in Windows to actually get some Linux development done. It was easier than I thought to split out just the rumble support, which requires minimal changes to the driver. Implementing XBox360 Wireless LED support will require a bit more work to pull off properly, since it seems to hate that bulk interface method completely. The LED output function should not require any more synchronization than it already has, although the initial LED send command will have to be separated out, since it can't be locked at all. I presume that won't be a problem as there should be no rumble commands to collide with it when the controller is just being reported as present. I will probably limit it to working if the CONFIG_JOYSTICK_XPAD_LEDS macro is defined, as that is one of the minimum requirements for the IRQ out interface to be enabled.
--- linux/drivers/input/joystick/xpad.c.orig 2011-06-11 19:49:56.964914370 -0700
+++ linux/drivers/input/joystick/xpad.c 2011-06-12 12:02:32.732131132 -0700@@ -545,7 +545,7 @@ static int xpad_init_output(struct usb_i struct usb_endpoint_descriptor *ep_irq_out; int error; - if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX) + if (xpad->xtype == XTYPE_UNKNOWN) return 0; xpad->odata = usb_alloc_coherent(xpad->udev, XPAD_PKT_LEN,
@@ -579,13 +579,13 @@ static int xpad_init_output(struct usb_i static void xpad_stop_output(struct usb_xpad *xpad) { - if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX) + if (xpad->xtype != XTYPE_UNKNOWN) usb_kill_urb(xpad->irq_out); } static void xpad_deinit_output(struct usb_xpad *xpad) { - if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX) { + if (xpad->xtype != XTYPE_UNKNOWN) { usb_free_urb(xpad->irq_out); usb_free_coherent(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
@@ -632,6 +632,23 @@ static int xpad_play_effect(struct input return usb_submit_urb(xpad->irq_out, GFP_ATOMIC); + case XTYPE_XBOX360W: + xpad->odata[0] = 0x00; + xpad->odata[1] = 0x01; + xpad->odata[2] = 0x0F; + xpad->odata[3] = 0xC0; + xpad->odata[4] = 0x00; + xpad->odata[5] = strong / 256; + xpad->odata[6] = weak / 256; + xpad->odata[7] = 0x00; + xpad->odata[8] = 0x00; + xpad->odata[9] = 0x00; + xpad->odata[10] = 0x00; + xpad->odata[11] = 0x00; + xpad->irq_out->transfer_buffer_length = 12; + + return usb_submit_urb(xpad->irq_out, GFP_ATOMIC); + default: dbg("%s - rumble command sent to unsupported xpad type: %d", __func__, xpad->xtype);
@@ -644,7 +661,7 @@ static int xpad_play_effect(struct input static int xpad_init_ff(struct usb_xpad *xpad) { - if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX) + if (xpad->xtype == XTYPE_UNKNOWN) return 0; input_set_capability(xpad->dev, EV_FF, FF_RUMBLE);