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Message-ID: <Pine.LNX.4.64.0705021704180.13550@twin.jikos.cz>
Date: Wed, 2 May 2007 17:05:15 +0200 (CEST)
From: Jan Kratochvil <honza@...os.cz>
To: Greg Kroah-Hartman <gregkh@...e.de>,
Dmitry Torokhov <dmitry.torokhov@...il.com>
cc: linux-input@...ey.karlin.mff.cuni.cz,
linux-usb-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Jiri Kosina <jkosina@...e.cz>
Subject: [PATCH 3/3] xpad.c: Added Xbox360 gamepad rumble support.
It is enabled only if CONFIG_XPAD_FF is set to y.
Implementation is using force feedback support for memoryless devices.
Signed-off-by: Jan Kratochvil <honza@...os.cz>
---
drivers/usb/input/Kconfig | 8 +++
drivers/usb/input/xpad.c | 116 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 124 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/input/Kconfig b/drivers/usb/input/Kconfig
index a792e42..2066200 100644
--- a/drivers/usb/input/Kconfig
+++ b/drivers/usb/input/Kconfig
@@ -149,6 +149,14 @@ config USB_XPAD
To compile this driver as a module, choose M here: the
module will be called xpad.
+config XPAD_FF
+ default n
+ bool "X-Box gamepad rumble support"
+ depends on USB_XPAD && INPUT
+ select INPUT_FF_MEMLESS
+ ---help---
+ Say Y here if you want to take advantage of xbox 360 rumble features.
+
config USB_ATI_REMOTE
tristate "ATI / X10 USB RF remote control"
depends on USB && INPUT
diff --git a/drivers/usb/input/xpad.c b/drivers/usb/input/xpad.c
index bac9ec2..2dabde5 100644
--- a/drivers/usb/input/xpad.c
+++ b/drivers/usb/input/xpad.c
@@ -189,6 +189,12 @@ struct usb_xpad {
unsigned char *idata; /* input data */
dma_addr_t idata_dma;
+#ifdef CONFIG_XPAD_FF
+ struct urb *irq_out; /* urb for interrupt out report */
+ unsigned char *odata; /* output data */
+ dma_addr_t odata_dma;
+#endif
+
char phys[65]; /* physical device path */
u8 flags; /* combination of XPAD_FLAGS_* */
@@ -340,6 +346,103 @@ exit:
__FUNCTION__, retval);
}
+#ifdef CONFIG_XPAD_FF
+/**
+ * xpad_irq_out
+ */
+static void xpad_irq_out(struct urb *urb)
+{
+ int retval;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+exit:
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ err("%s - usb_submit_urb failed with result %d",
+ __FUNCTION__, retval);
+}
+
+int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
+{
+ struct usb_xpad *xpad = dev->private;
+ 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;
+ usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+ }
+
+ return 0;
+}
+
+static int xpad_init_ff(struct usb_interface *intf, struct usb_xpad *xpad)
+{
+ if (xpad->flags & XPAD_FLAGS_XBOX360) {
+ struct usb_endpoint_descriptor *ep_irq_out;
+ int rv;
+
+ xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN,
+ GFP_ATOMIC, &xpad->odata_dma );
+ if (!xpad->idata)
+ goto fail1;
+
+ xpad->irq_out = usb_alloc_urb(0, GFP_KERNEL);
+ if (!xpad->irq_out)
+ goto fail2;
+
+
+ ep_irq_out = &intf->cur_altsetting->endpoint[1].desc;
+ usb_fill_int_urb(xpad->irq_out, xpad->udev,
+ usb_sndintpipe(xpad->udev, ep_irq_out->bEndpointAddress),
+ xpad->odata, XPAD_PKT_LEN,
+ xpad_irq_out, xpad, ep_irq_out->bInterval);
+ xpad->irq_out->transfer_dma = xpad->odata_dma;
+ xpad->irq_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ set_bit( FF_RUMBLE, xpad->dev->ffbit );
+ rv = input_ff_create_memless(xpad->dev, NULL, xpad_play_effect);
+
+ return 0;
+
+fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
+fail1:
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static void xpad_deinit_ff(struct usb_interface *intf, struct usb_xpad *xpad)
+{
+ if (xpad->flags & XPAD_FLAGS_XBOX360) {
+ usb_kill_urb(xpad->irq_out);
+ usb_free_urb(xpad->irq_out);
+ usb_buffer_free(interface_to_usbdev(intf), XPAD_PKT_LEN,
+ xpad->odata, xpad->odata_dma);
+ }
+}
+#endif
+
static int xpad_open (struct input_dev *dev)
{
struct usb_xpad *xpad = dev->private;
@@ -432,6 +535,11 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+#ifdef CONFIG_XPAD_FF
+ if (xpad->flags & XPAD_FLAGS_XBOX360)
+ input_dev->evbit[0] |= BIT(EV_FF);
+#endif
+
/* set up buttons */
for (i = 0; xpad_btn[i] >= 0; i++)
set_bit(xpad_btn[i], input_dev->keybit);
@@ -449,6 +557,11 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
+#ifdef CONFIG_XPAD_FF
+ if (xpad_init_ff(intf, xpad))
+ goto fail2;
+#endif
+
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
@@ -476,6 +589,9 @@ static void xpad_disconnect(struct usb_interface *intf)
usb_set_intfdata(intf, NULL);
if (xpad) {
usb_kill_urb(xpad->irq_in);
+#ifdef CONFIG_XPAD_FF
+ xpad_deinit_ff(intf, xpad);
+#endif
input_unregister_device(xpad->dev);
usb_free_urb(xpad->irq_in);
usb_buffer_free(interface_to_usbdev(intf), XPAD_PKT_LEN,
--
1.5.0.6
-
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