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Message-ID: <20100113223119.56532356@rechenknecht2k7>
Date: Wed, 13 Jan 2010 22:31:19 +0100
From: Benjamin Valentin <benpicco@...at.fu-berlin.de>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/input/joystick/xpad.c: Add rumble support for
original xbox controller
To avoid confusion, I am resubmitting a cleaned up version of the patch
against 2.6.33-r4.
I have changed GFP_KERNEL to GFP_ATOMIC as you did in your tree [1],
this seems to clear the oops in Virtualbox when unplugging the device
while sending an effect.
[1]
http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/dtor/input.git;a=commit;h=dd38d6889dc5dae2014d9eac72fae32f477f294e)
Signed-off-by: Benjamin Valentin <benpicco@...at.fu-berlin.de>
--- a/drivers/input/joystick/xpad.c 2010-01-13 21:35:35.081651802 +0100
+++ b/drivers/input/joystick/xpad.c 2010-01-13 22:02:29.313757056 +0100
@@ -446,7 +446,7 @@ static void xpad_irq_in(struct urb *urb)
}
exit:
- retval = usb_submit_urb (urb, GFP_ATOMIC);
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
err ("%s - usb_submit_urb failed with result %d",
__func__, retval);
@@ -505,7 +505,7 @@ static int xpad_init_output(struct usb_i
struct usb_endpoint_descriptor *ep_irq_out;
int error = -ENOMEM;
- if (xpad->xtype != XTYPE_XBOX360)
+ if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX)
return 0;
xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN,
@@ -535,13 +535,13 @@ static int xpad_init_output(struct usb_i
static void xpad_stop_output(struct usb_xpad *xpad)
{
- if (xpad->xtype == XTYPE_XBOX360)
+ if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX)
usb_kill_urb(xpad->irq_out);
}
static void xpad_deinit_output(struct usb_xpad *xpad)
{
- if (xpad->xtype == XTYPE_XBOX360) {
+ if (xpad->xtype == XTYPE_XBOX360 || xpad->xtype == XTYPE_XBOX) {
usb_free_urb(xpad->irq_out);
usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
xpad->odata, xpad->odata_dma);
@@ -554,24 +554,45 @@ static void xpad_stop_output(struct usb_
#endif
#ifdef CONFIG_JOYSTICK_XPAD_FF
-static int xpad_play_effect(struct input_dev *dev, void *data,
- struct ff_effect *effect)
+static int xpad_send_rumble(struct usb_xpad *xpad, __u8 left, __u8 right) {
+ switch(xpad->xtype) {
+ case XTYPE_XBOX:
+ xpad->odata[0] = 0x00;
+ xpad->odata[1] = 0x06;
+ xpad->odata[2] = 0x00;
+ xpad->odata[3] = left; // left actuator (strong)
+ xpad->odata[4] = 0x00;
+ xpad->odata[5] = right; // right actuator (weak)
+ xpad->irq_out->transfer_buffer_length = 6;
+ break;
+ case XTYPE_XBOX360:
+ xpad->odata[0] = 0x00;
+ xpad->odata[1] = 0x08;
+ xpad->odata[2] = 0x00;
+ xpad->odata[3] = left; // left actuator (strong)
+ xpad->odata[4] = right; // right actuator (weak)
+ xpad->odata[5] = 0x00;
+ xpad->odata[6] = 0x00;
+ xpad->odata[7] = 0x00;
+ xpad->irq_out->transfer_buffer_length = 8;
+ break;
+ default:
+ dbg("%s - rumble command sent to unsupported xpad type: %d",
+ __func__, xpad->xtype);
+ return 0;
+ }
+
+ return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
+}
+
+static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
{
struct usb_xpad *xpad = input_get_drvdata(dev);
if (effect->type == FF_RUMBLE) {
- __u16 strong = effect->u.rumble.strong_magnitude;
- __u16 weak = effect->u.rumble.weak_magnitude;
- xpad->odata[0] = 0x00;
- xpad->odata[1] = 0x08;
- xpad->odata[2] = 0x00;
- xpad->odata[3] = strong / 256;
- xpad->odata[4] = weak / 256;
- xpad->odata[5] = 0x00;
- xpad->odata[6] = 0x00;
- xpad->odata[7] = 0x00;
- xpad->irq_out->transfer_buffer_length = 8;
- usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ __u8 strong = effect->u.rumble.strong_magnitude / 256;
+ __u8 weak = effect->u.rumble.weak_magnitude / 256;
+ xpad_send_rumble(xpad, strong, weak);
}
return 0;
@@ -579,7 +600,7 @@ static int xpad_play_effect(struct input
static int xpad_init_ff(struct usb_xpad *xpad)
{
- if (xpad->xtype != XTYPE_XBOX360)
+ if (xpad->xtype != XTYPE_XBOX360 && xpad->xtype != XTYPE_XBOX)
return 0;
input_set_capability(xpad->dev, EV_FF, FF_RUMBLE);
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