diff options
Diffstat (limited to 'drivers/media/video/uvc/uvc_status.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_status.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/drivers/media/video/uvc/uvc_status.c b/drivers/media/video/uvc/uvc_status.c deleted file mode 100644 index b7492775e6ae..000000000000 --- a/drivers/media/video/uvc/uvc_status.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * uvc_status.c -- USB Video Class driver - Status endpoint - * - * Copyright (C) 2005-2009 - * Laurent Pinchart (laurent.pinchart@ideasonboard.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - */ - -#include <linux/kernel.h> -#include <linux/input.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/usb/input.h> - -#include "uvcvideo.h" - -/* -------------------------------------------------------------------------- - * Input device - */ -#ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV -static int uvc_input_init(struct uvc_device *dev) -{ - struct input_dev *input; - int ret; - - input = input_allocate_device(); - if (input == NULL) - return -ENOMEM; - - usb_make_path(dev->udev, dev->input_phys, sizeof(dev->input_phys)); - strlcat(dev->input_phys, "/button", sizeof(dev->input_phys)); - - input->name = dev->name; - input->phys = dev->input_phys; - usb_to_input_id(dev->udev, &input->id); - input->dev.parent = &dev->intf->dev; - - __set_bit(EV_KEY, input->evbit); - __set_bit(KEY_CAMERA, input->keybit); - - if ((ret = input_register_device(input)) < 0) - goto error; - - dev->input = input; - return 0; - -error: - input_free_device(input); - return ret; -} - -static void uvc_input_cleanup(struct uvc_device *dev) -{ - if (dev->input) - input_unregister_device(dev->input); -} - -static void uvc_input_report_key(struct uvc_device *dev, unsigned int code, - int value) -{ - if (dev->input) { - input_report_key(dev->input, code, value); - input_sync(dev->input); - } -} - -#else -#define uvc_input_init(dev) -#define uvc_input_cleanup(dev) -#define uvc_input_report_key(dev, code, value) -#endif /* CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV */ - -/* -------------------------------------------------------------------------- - * Status interrupt endpoint - */ -static void uvc_event_streaming(struct uvc_device *dev, __u8 *data, int len) -{ - if (len < 3) { - uvc_trace(UVC_TRACE_STATUS, "Invalid streaming status event " - "received.\n"); - return; - } - - if (data[2] == 0) { - if (len < 4) - return; - uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n", - data[1], data[3] ? "pressed" : "released", len); - uvc_input_report_key(dev, KEY_CAMERA, data[3]); - } else { - uvc_trace(UVC_TRACE_STATUS, "Stream %u error event %02x %02x " - "len %d.\n", data[1], data[2], data[3], len); - } -} - -static void uvc_event_control(struct uvc_device *dev, __u8 *data, int len) -{ - char *attrs[3] = { "value", "info", "failure" }; - - if (len < 6 || data[2] != 0 || data[4] > 2) { - uvc_trace(UVC_TRACE_STATUS, "Invalid control status event " - "received.\n"); - return; - } - - uvc_trace(UVC_TRACE_STATUS, "Control %u/%u %s change len %d.\n", - data[1], data[3], attrs[data[4]], len); -} - -static void uvc_status_complete(struct urb *urb) -{ - struct uvc_device *dev = urb->context; - int len, ret; - - switch (urb->status) { - case 0: - break; - - case -ENOENT: /* usb_kill_urb() called. */ - case -ECONNRESET: /* usb_unlink_urb() called. */ - case -ESHUTDOWN: /* The endpoint is being disabled. */ - case -EPROTO: /* Device is disconnected (reported by some - * host controller). */ - return; - - default: - uvc_printk(KERN_WARNING, "Non-zero status (%d) in status " - "completion handler.\n", urb->status); - return; - } - - len = urb->actual_length; - if (len > 0) { - switch (dev->status[0] & 0x0f) { - case UVC_STATUS_TYPE_CONTROL: - uvc_event_control(dev, dev->status, len); - break; - - case UVC_STATUS_TYPE_STREAMING: - uvc_event_streaming(dev, dev->status, len); - break; - - default: - uvc_trace(UVC_TRACE_STATUS, "Unknown status event " - "type %u.\n", dev->status[0]); - break; - } - } - - /* Resubmit the URB. */ - urb->interval = dev->int_ep->desc.bInterval; - if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { - uvc_printk(KERN_ERR, "Failed to resubmit status URB (%d).\n", - ret); - } -} - -int uvc_status_init(struct uvc_device *dev) -{ - struct usb_host_endpoint *ep = dev->int_ep; - unsigned int pipe; - int interval; - - if (ep == NULL) - return 0; - - uvc_input_init(dev); - - dev->status = kzalloc(UVC_MAX_STATUS_SIZE, GFP_KERNEL); - if (dev->status == NULL) - return -ENOMEM; - - dev->int_urb = usb_alloc_urb(0, GFP_KERNEL); - if (dev->int_urb == NULL) { - kfree(dev->status); - return -ENOMEM; - } - - pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress); - - /* For high-speed interrupt endpoints, the bInterval value is used as - * an exponent of two. Some developers forgot about it. - */ - interval = ep->desc.bInterval; - if (interval > 16 && dev->udev->speed == USB_SPEED_HIGH && - (dev->quirks & UVC_QUIRK_STATUS_INTERVAL)) - interval = fls(interval) - 1; - - usb_fill_int_urb(dev->int_urb, dev->udev, pipe, - dev->status, UVC_MAX_STATUS_SIZE, uvc_status_complete, - dev, interval); - - return 0; -} - -void uvc_status_cleanup(struct uvc_device *dev) -{ - usb_kill_urb(dev->int_urb); - usb_free_urb(dev->int_urb); - kfree(dev->status); - uvc_input_cleanup(dev); -} - -int uvc_status_start(struct uvc_device *dev) -{ - if (dev->int_urb == NULL) - return 0; - - return usb_submit_urb(dev->int_urb, GFP_KERNEL); -} - -void uvc_status_stop(struct uvc_device *dev) -{ - usb_kill_urb(dev->int_urb); -} - -int uvc_status_suspend(struct uvc_device *dev) -{ - if (atomic_read(&dev->users)) - usb_kill_urb(dev->int_urb); - - return 0; -} - -int uvc_status_resume(struct uvc_device *dev) -{ - if (dev->int_urb == NULL || atomic_read(&dev->users) == 0) - return 0; - - return usb_submit_urb(dev->int_urb, GFP_NOIO); -} - |