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Input: xpad - add support for leds on xbox 360 pad

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Export LEDs on Xbox360 pad via led subsystem as a single device in
/sys/class/leds/xpad[0-9]+.

Xbox360 pad has four leds, which form a circle. Unfortunately the leds
can't be controlled independently and can only display a predefined
set of patterns (for example one is turned on wile others are off or
a rotating pattern - 1-2-3-4). To activate a pattern one needs to send
a specific command to the device (see http://www.free60.org/wiki/Gamepad).

Led subsystem allows us to set brightness, but there is nothing like
brightness on this device. So brightness is actually interpreted as
the command (only values between 0 and 14 are accepted).

Signed-off-by: Jan Kratochvil <honza@jikos.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Jan Kratochvil 2007-07-18 00:35:40 -04:00 committed by Dmitry Torokhov
parent cb32da0416
commit 4994cd8dad
2 changed files with 159 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/input/joystick/Kconfig
View File

@ -275,4 +275,11 @@ config JOYSTICK_XPAD_FF
---help--- ---help---
Say Y here if you want to take advantage of xbox 360 rumble features. Say Y here if you want to take advantage of xbox 360 rumble features.
config JOYSTICK_XPAD_LEDS
bool "LED Support for Xbox360 controller 'BigX' LED"
depends on LEDS_CLASS && JOYSTICK_XPAD
---help---
This option enables support for the LED which surrounds the Big X on
XBox 360 controller.
endif endif

198
drivers/input/joystick/xpad.c
View File

@ -191,13 +191,18 @@ struct usb_xpad {
unsigned char *idata; /* input data */ unsigned char *idata; /* input data */
dma_addr_t idata_dma; dma_addr_t idata_dma;
#ifdef CONFIG_JOYSTICK_XPAD_FF #if defined(CONFIG_JOYSTICK_XPAD_FF) || defined(CONFIG_JOYSTICK_XPAD_LEDS)
struct urb *irq_out; /* urb for interrupt out report */ struct urb *irq_out; /* urb for interrupt out report */
unsigned char *odata; /* output data */ unsigned char *odata; /* output data */
dma_addr_t odata_dma; dma_addr_t odata_dma;
struct mutex odata_mutex;
#endif #endif
char phys[65]; /* physical device path */ #if defined(CONFIG_JOYSTICK_XPAD_LEDS)
struct xpad_led *led;
#endif
char phys[64]; /* physical device path */
int dpad_mapping; /* map d-pad to buttons or to axes */ int dpad_mapping; /* map d-pad to buttons or to axes */
int xtype; /* type of xbox device */ int xtype; /* type of xbox device */
@ -349,7 +354,7 @@ static void xpad_irq_in(struct urb *urb)
__FUNCTION__, retval); __FUNCTION__, retval);
} }
#ifdef CONFIG_JOYSTICK_XPAD_FF #if defined(CONFIG_JOYSTICK_XPAD_FF) || defined(CONFIG_JOYSTICK_XPAD_LEDS)
static void xpad_irq_out(struct urb *urb) static void xpad_irq_out(struct urb *urb)
{ {
int retval; int retval;
@ -376,6 +381,60 @@ static void xpad_irq_out(struct urb *urb)
__FUNCTION__, retval); __FUNCTION__, retval);
} }
static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
{
struct usb_endpoint_descriptor *ep_irq_out;
int error = -ENOMEM;
if (xpad->xtype != XTYPE_XBOX360)
return 0;
xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN,
GFP_ATOMIC, &xpad->odata_dma );
if (!xpad->odata)
goto fail1;
mutex_init(&xpad->odata_mutex);
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;
return 0;
fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
fail1: return error;
}
static void xpad_stop_output(struct usb_xpad *xpad)
{
if (xpad->xtype == XTYPE_XBOX360)
usb_kill_urb(xpad->irq_out);
}
static void xpad_deinit_output(struct usb_xpad *xpad)
{
if (xpad->xtype == XTYPE_XBOX360) {
usb_free_urb(xpad->irq_out);
usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
xpad->odata, xpad->odata_dma);
}
}
#else
static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) { return 0; }
static void xpad_deinit_output(struct usb_xpad *xpad) {}
static void xpad_stop_output(struct usb_xpad *xpad) {}
#endif
#ifdef CONFIG_JOYSTICK_XPAD_FF
static int xpad_play_effect(struct input_dev *dev, void *data, static int xpad_play_effect(struct input_dev *dev, void *data,
struct ff_effect *effect) struct ff_effect *effect)
{ {
@ -398,64 +457,101 @@ static int xpad_play_effect(struct input_dev *dev, void *data,
return 0; return 0;
} }
static int xpad_init_ff(struct usb_interface *intf, struct usb_xpad *xpad) static int xpad_init_ff(struct usb_xpad *xpad)
{ {
struct usb_endpoint_descriptor *ep_irq_out; input_set_capability(xpad->dev, EV_FF, FF_RUMBLE);
int error = -ENOMEM;
return input_ff_create_memless(xpad->dev, NULL, xpad_play_effect);
}
#else
static int xpad_init_ff(struct usb_xpad *xpad) { return 0; }
#endif
#if defined(CONFIG_JOYSTICK_XPAD_LEDS)
#include <linux/leds.h>
struct xpad_led {
char name[16];
struct led_classdev led_cdev;
struct usb_xpad *xpad;
};
static void xpad_send_led_command(struct usb_xpad *xpad, int command)
{
if (command >= 0 && command < 14) {
mutex_lock(&xpad->odata_mutex);
xpad->odata[0] = 0x01;
xpad->odata[1] = 0x03;
xpad->odata[2] = command;
usb_submit_urb(xpad->irq_out, GFP_KERNEL);
mutex_unlock(&xpad->odata_mutex);
}
}
static void xpad_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct xpad_led *xpad_led = container_of(led_cdev,
struct xpad_led, led_cdev);
xpad_send_led_command(xpad_led->xpad, value);
}
static int xpad_led_probe(struct usb_xpad *xpad)
{
static atomic_t led_seq = ATOMIC_INIT(0);
long led_no;
struct xpad_led *led;
struct led_classdev *led_cdev;
int error;
if (xpad->xtype != XTYPE_XBOX360) if (xpad->xtype != XTYPE_XBOX360)
return 0; return 0;
xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN, xpad->led = led = kzalloc(sizeof(struct xpad_led), GFP_KERNEL);
GFP_ATOMIC, &xpad->odata_dma ); if (!led)
if (!xpad->odata) return -ENOMEM;
goto fail1;
xpad->irq_out = usb_alloc_urb(0, GFP_KERNEL); led_no = (long)atomic_inc_return(&led_seq) - 1;
if (!xpad->irq_out)
goto fail2;
ep_irq_out = &intf->cur_altsetting->endpoint[1].desc; snprintf(led->name, sizeof(led->name), "xpad%ld", led_no);
usb_fill_int_urb(xpad->irq_out, xpad->udev, led->xpad = xpad;
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;
input_set_capability(xpad->dev, EV_FF, FF_RUMBLE); led_cdev = &led->led_cdev;
led_cdev->name = led->name;
led_cdev->brightness_set = xpad_led_set;
error = input_ff_create_memless(xpad->dev, NULL, xpad_play_effect); error = led_classdev_register(&xpad->udev->dev, led_cdev);
if (error) if (error) {
goto fail2; kfree(led);
xpad->led = NULL;
return error;
}
/*
* Light up the segment corresponding to controller number
*/
xpad_send_led_command(xpad, (led_no % 4) + 2);
return 0; return 0;
fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
fail1: return error;
} }
static void xpad_stop_ff(struct usb_xpad *xpad) static void xpad_led_disconnect(struct usb_xpad *xpad)
{ {
if (xpad->xtype == XTYPE_XBOX360) struct xpad_led *xpad_led = xpad->led;
usb_kill_urb(xpad->irq_out);
}
static void xpad_deinit_ff(struct usb_xpad *xpad) if (xpad_led) {
{ led_classdev_unregister(&xpad_led->led_cdev);
if (xpad->xtype == XTYPE_XBOX360) { kfree(xpad_led->name);
usb_free_urb(xpad->irq_out);
usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
xpad->odata, xpad->odata_dma);
} }
} }
#else #else
static int xpad_init_ff(struct usb_interface *intf, struct usb_xpad *xpad) { return 0; } static int xpad_led_probe(struct usb_xpad *xpad) { return 0; }
static void xpad_stop_ff(struct usb_xpad *xpad) { } static void xpad_led_disconnect(struct usb_xpad *xpad) { }
static void xpad_deinit_ff(struct usb_xpad *xpad) { }
#endif #endif
static int xpad_open(struct input_dev *dev) static int xpad_open(struct input_dev *dev)
{ {
struct usb_xpad *xpad = input_get_drvdata(dev); struct usb_xpad *xpad = input_get_drvdata(dev);
@ -472,7 +568,7 @@ static void xpad_close(struct input_dev *dev)
struct usb_xpad *xpad = input_get_drvdata(dev); struct usb_xpad *xpad = input_get_drvdata(dev);
usb_kill_urb(xpad->irq_in); usb_kill_urb(xpad->irq_in);
xpad_stop_ff(xpad); xpad_stop_output(xpad);
} }
static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs) static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs)
@ -564,10 +660,18 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
for (i = 0; xpad_abs_pad[i] >= 0; i++) for (i = 0; xpad_abs_pad[i] >= 0; i++)
xpad_set_up_abs(input_dev, xpad_abs_pad[i]); xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
error = xpad_init_ff(intf, xpad); error = xpad_init_output(intf, xpad);
if (error) if (error)
goto fail2; goto fail2;
error = xpad_init_ff(xpad);
if (error)
goto fail3;
error = xpad_led_probe(xpad);
if (error)
goto fail3;
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc; ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev, usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress), usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
@ -578,12 +682,13 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
error = input_register_device(xpad->dev); error = input_register_device(xpad->dev);
if (error) if (error)
goto fail3; goto fail4;
usb_set_intfdata(intf, xpad); usb_set_intfdata(intf, xpad);
return 0; return 0;
fail3: usb_free_urb(xpad->irq_in); fail4: usb_free_urb(xpad->irq_in);
fail3: xpad_deinit_output(xpad);
fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma); fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev); fail1: input_free_device(input_dev);
kfree(xpad); kfree(xpad);
@ -597,8 +702,9 @@ static void xpad_disconnect(struct usb_interface *intf)
usb_set_intfdata(intf, NULL); usb_set_intfdata(intf, NULL);
if (xpad) { if (xpad) {
xpad_led_disconnect(xpad);
input_unregister_device(xpad->dev); input_unregister_device(xpad->dev);
xpad_deinit_ff(xpad); xpad_deinit_output(xpad);
usb_free_urb(xpad->irq_in); usb_free_urb(xpad->irq_in);
usb_buffer_free(xpad->udev, XPAD_PKT_LEN, usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
xpad->idata, xpad->idata_dma); xpad->idata, xpad->idata_dma);