Input: xpad - add support for leds on xbox 360 pad
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
Dmitry Torokhov
parent
cb32da0416
commit
4994cd8dad
2 changed files with 159 additions and 46 deletions
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@ -275,4 +275,11 @@ config JOYSTICK_XPAD_FF
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---help---
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Say Y here if you want to take advantage of xbox 360 rumble features.
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config JOYSTICK_XPAD_LEDS
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bool "LED Support for Xbox360 controller 'BigX' LED"
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depends on LEDS_CLASS && JOYSTICK_XPAD
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---help---
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This option enables support for the LED which surrounds the Big X on
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XBox 360 controller.
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endif
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@ -191,13 +191,18 @@ struct usb_xpad {
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unsigned char *idata; /* input data */
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dma_addr_t idata_dma;
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#ifdef CONFIG_JOYSTICK_XPAD_FF
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#if defined(CONFIG_JOYSTICK_XPAD_FF) || defined(CONFIG_JOYSTICK_XPAD_LEDS)
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struct urb *irq_out; /* urb for interrupt out report */
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unsigned char *odata; /* output data */
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dma_addr_t odata_dma;
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struct mutex odata_mutex;
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#endif
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char phys[65]; /* physical device path */
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#if defined(CONFIG_JOYSTICK_XPAD_LEDS)
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struct xpad_led *led;
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#endif
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char phys[64]; /* physical device path */
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int dpad_mapping; /* map d-pad to buttons or to axes */
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int xtype; /* type of xbox device */
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@ -349,7 +354,7 @@ static void xpad_irq_in(struct urb *urb)
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__FUNCTION__, retval);
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}
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#ifdef CONFIG_JOYSTICK_XPAD_FF
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#if defined(CONFIG_JOYSTICK_XPAD_FF) || defined(CONFIG_JOYSTICK_XPAD_LEDS)
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static void xpad_irq_out(struct urb *urb)
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{
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int retval;
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@ -376,6 +381,60 @@ static void xpad_irq_out(struct urb *urb)
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__FUNCTION__, retval);
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}
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static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
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{
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struct usb_endpoint_descriptor *ep_irq_out;
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int error = -ENOMEM;
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if (xpad->xtype != XTYPE_XBOX360)
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return 0;
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xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN,
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GFP_ATOMIC, &xpad->odata_dma );
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if (!xpad->odata)
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goto fail1;
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mutex_init(&xpad->odata_mutex);
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xpad->irq_out = usb_alloc_urb(0, GFP_KERNEL);
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if (!xpad->irq_out)
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goto fail2;
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ep_irq_out = &intf->cur_altsetting->endpoint[1].desc;
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usb_fill_int_urb(xpad->irq_out, xpad->udev,
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usb_sndintpipe(xpad->udev, ep_irq_out->bEndpointAddress),
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xpad->odata, XPAD_PKT_LEN,
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xpad_irq_out, xpad, ep_irq_out->bInterval);
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xpad->irq_out->transfer_dma = xpad->odata_dma;
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xpad->irq_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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return 0;
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fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
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fail1: return error;
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}
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static void xpad_stop_output(struct usb_xpad *xpad)
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{
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if (xpad->xtype == XTYPE_XBOX360)
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usb_kill_urb(xpad->irq_out);
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}
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static void xpad_deinit_output(struct usb_xpad *xpad)
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{
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if (xpad->xtype == XTYPE_XBOX360) {
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usb_free_urb(xpad->irq_out);
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usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
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xpad->odata, xpad->odata_dma);
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}
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}
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#else
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static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad) { return 0; }
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static void xpad_deinit_output(struct usb_xpad *xpad) {}
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static void xpad_stop_output(struct usb_xpad *xpad) {}
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#endif
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#ifdef CONFIG_JOYSTICK_XPAD_FF
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static int xpad_play_effect(struct input_dev *dev, void *data,
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struct ff_effect *effect)
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{
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@ -398,64 +457,101 @@ static int xpad_play_effect(struct input_dev *dev, void *data,
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return 0;
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}
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static int xpad_init_ff(struct usb_interface *intf, struct usb_xpad *xpad)
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static int xpad_init_ff(struct usb_xpad *xpad)
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{
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struct usb_endpoint_descriptor *ep_irq_out;
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int error = -ENOMEM;
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input_set_capability(xpad->dev, EV_FF, FF_RUMBLE);
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return input_ff_create_memless(xpad->dev, NULL, xpad_play_effect);
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}
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#else
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static int xpad_init_ff(struct usb_xpad *xpad) { return 0; }
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#endif
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#if defined(CONFIG_JOYSTICK_XPAD_LEDS)
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#include <linux/leds.h>
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struct xpad_led {
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char name[16];
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struct led_classdev led_cdev;
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struct usb_xpad *xpad;
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};
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static void xpad_send_led_command(struct usb_xpad *xpad, int command)
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{
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if (command >= 0 && command < 14) {
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mutex_lock(&xpad->odata_mutex);
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xpad->odata[0] = 0x01;
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xpad->odata[1] = 0x03;
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xpad->odata[2] = command;
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usb_submit_urb(xpad->irq_out, GFP_KERNEL);
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mutex_unlock(&xpad->odata_mutex);
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}
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}
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static void xpad_led_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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struct xpad_led *xpad_led = container_of(led_cdev,
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struct xpad_led, led_cdev);
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xpad_send_led_command(xpad_led->xpad, value);
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}
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static int xpad_led_probe(struct usb_xpad *xpad)
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{
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static atomic_t led_seq = ATOMIC_INIT(0);
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long led_no;
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struct xpad_led *led;
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struct led_classdev *led_cdev;
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int error;
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if (xpad->xtype != XTYPE_XBOX360)
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return 0;
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xpad->odata = usb_buffer_alloc(xpad->udev, XPAD_PKT_LEN,
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GFP_ATOMIC, &xpad->odata_dma );
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if (!xpad->odata)
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goto fail1;
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xpad->led = led = kzalloc(sizeof(struct xpad_led), GFP_KERNEL);
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if (!led)
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return -ENOMEM;
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xpad->irq_out = usb_alloc_urb(0, GFP_KERNEL);
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if (!xpad->irq_out)
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goto fail2;
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led_no = (long)atomic_inc_return(&led_seq) - 1;
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ep_irq_out = &intf->cur_altsetting->endpoint[1].desc;
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usb_fill_int_urb(xpad->irq_out, xpad->udev,
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usb_sndintpipe(xpad->udev, ep_irq_out->bEndpointAddress),
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xpad->odata, XPAD_PKT_LEN,
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xpad_irq_out, xpad, ep_irq_out->bInterval);
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xpad->irq_out->transfer_dma = xpad->odata_dma;
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xpad->irq_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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snprintf(led->name, sizeof(led->name), "xpad%ld", led_no);
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led->xpad = xpad;
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input_set_capability(xpad->dev, EV_FF, FF_RUMBLE);
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led_cdev = &led->led_cdev;
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led_cdev->name = led->name;
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led_cdev->brightness_set = xpad_led_set;
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error = input_ff_create_memless(xpad->dev, NULL, xpad_play_effect);
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if (error)
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goto fail2;
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error = led_classdev_register(&xpad->udev->dev, led_cdev);
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if (error) {
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kfree(led);
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xpad->led = NULL;
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return error;
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}
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/*
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* Light up the segment corresponding to controller number
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*/
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xpad_send_led_command(xpad, (led_no % 4) + 2);
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return 0;
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fail2: usb_buffer_free(xpad->udev, XPAD_PKT_LEN, xpad->odata, xpad->odata_dma);
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fail1: return error;
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}
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static void xpad_stop_ff(struct usb_xpad *xpad)
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static void xpad_led_disconnect(struct usb_xpad *xpad)
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{
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if (xpad->xtype == XTYPE_XBOX360)
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usb_kill_urb(xpad->irq_out);
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}
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struct xpad_led *xpad_led = xpad->led;
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static void xpad_deinit_ff(struct usb_xpad *xpad)
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{
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if (xpad->xtype == XTYPE_XBOX360) {
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usb_free_urb(xpad->irq_out);
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usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
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xpad->odata, xpad->odata_dma);
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if (xpad_led) {
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led_classdev_unregister(&xpad_led->led_cdev);
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kfree(xpad_led->name);
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}
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}
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#else
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static int xpad_init_ff(struct usb_interface *intf, struct usb_xpad *xpad) { return 0; }
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static void xpad_stop_ff(struct usb_xpad *xpad) { }
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static void xpad_deinit_ff(struct usb_xpad *xpad) { }
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static int xpad_led_probe(struct usb_xpad *xpad) { return 0; }
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static void xpad_led_disconnect(struct usb_xpad *xpad) { }
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#endif
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static int xpad_open(struct input_dev *dev)
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{
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struct usb_xpad *xpad = input_get_drvdata(dev);
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@ -472,7 +568,7 @@ static void xpad_close(struct input_dev *dev)
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struct usb_xpad *xpad = input_get_drvdata(dev);
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usb_kill_urb(xpad->irq_in);
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xpad_stop_ff(xpad);
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xpad_stop_output(xpad);
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}
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static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs)
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@ -564,10 +660,18 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
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for (i = 0; xpad_abs_pad[i] >= 0; i++)
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xpad_set_up_abs(input_dev, xpad_abs_pad[i]);
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error = xpad_init_ff(intf, xpad);
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error = xpad_init_output(intf, xpad);
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if (error)
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goto fail2;
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error = xpad_init_ff(xpad);
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if (error)
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goto fail3;
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error = xpad_led_probe(xpad);
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if (error)
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goto fail3;
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ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
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usb_fill_int_urb(xpad->irq_in, udev,
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usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
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@ -578,12 +682,13 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
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error = input_register_device(xpad->dev);
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if (error)
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goto fail3;
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goto fail4;
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usb_set_intfdata(intf, xpad);
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return 0;
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fail3: usb_free_urb(xpad->irq_in);
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fail4: usb_free_urb(xpad->irq_in);
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fail3: xpad_deinit_output(xpad);
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fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
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fail1: input_free_device(input_dev);
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kfree(xpad);
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@ -597,8 +702,9 @@ static void xpad_disconnect(struct usb_interface *intf)
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usb_set_intfdata(intf, NULL);
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if (xpad) {
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xpad_led_disconnect(xpad);
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input_unregister_device(xpad->dev);
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xpad_deinit_ff(xpad);
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xpad_deinit_output(xpad);
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usb_free_urb(xpad->irq_in);
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usb_buffer_free(xpad->udev, XPAD_PKT_LEN,
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xpad->idata, xpad->idata_dma);
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