From 4973fcaea035ae074ba9aa1c5bbbaa92e1b1720c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 7 Jul 2008 23:04:29 +0000 Subject: uvcvideo: Make input device support optional From: Laurent Pinchart UVC devices can report button events. The uvcvideo driver depends on CONFIG_INPUT to report events to the input layer. This patch removes the hard dependency by introducing a new CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV option. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/video/Kconfig | 10 ++-------- linux/drivers/media/video/uvc/Kconfig | 17 +++++++++++++++++ linux/drivers/media/video/uvc/uvc_status.c | 17 +++++++++++++++-- 3 files changed, 34 insertions(+), 10 deletions(-) create mode 100644 linux/drivers/media/video/uvc/Kconfig (limited to 'linux/drivers/media/video') diff --git a/linux/drivers/media/video/Kconfig b/linux/drivers/media/video/Kconfig index adb82dc0f..45c90b8bc 100644 --- a/linux/drivers/media/video/Kconfig +++ b/linux/drivers/media/video/Kconfig @@ -793,15 +793,9 @@ menuconfig V4L_USB_DRIVERS if V4L_USB_DRIVERS && USB -config USB_VIDEO_CLASS - tristate "USB Video Class (UVC)" - ---help--- - Support for the USB Video Class (UVC). Currently only video - input devices, such as webcams, are supported. +source "drivers/media/video/uvc/Kconfig" - For more information see: - -source "drivers/media/video/gspca/Kconfig" +source "drivers/media/video/gspca/Kconfig" source "drivers/media/video/pvrusb2/Kconfig" diff --git a/linux/drivers/media/video/uvc/Kconfig b/linux/drivers/media/video/uvc/Kconfig new file mode 100644 index 000000000..c2d9760de --- /dev/null +++ b/linux/drivers/media/video/uvc/Kconfig @@ -0,0 +1,17 @@ +config USB_VIDEO_CLASS + tristate "USB Video Class (UVC)" + ---help--- + Support for the USB Video Class (UVC). Currently only video + input devices, such as webcams, are supported. + + For more information see: + +config USB_VIDEO_CLASS_INPUT_EVDEV + bool "UVC input events device support" + default y + depends on USB_VIDEO_CLASS && INPUT + ---help--- + This option makes USB Video Class devices register an input device + to report button events. + + If you are in doubt, say Y. diff --git a/linux/drivers/media/video/uvc/uvc_status.c b/linux/drivers/media/video/uvc/uvc_status.c index 7bfddad37..75e678ac5 100644 --- a/linux/drivers/media/video/uvc/uvc_status.c +++ b/linux/drivers/media/video/uvc/uvc_status.c @@ -22,6 +22,7 @@ /* -------------------------------------------------------------------------- * Input device */ +#ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV static int uvc_input_init(struct uvc_device *dev) { struct usb_device *udev = dev->udev; @@ -67,6 +68,19 @@ static void uvc_input_cleanup(struct uvc_device *dev) 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); +} + +#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 */ @@ -83,8 +97,7 @@ static void uvc_event_streaming(struct uvc_device *dev, __u8 *data, int len) return; uvc_trace(UVC_TRACE_STATUS, "Button (intf %u) %s len %d\n", data[1], data[3] ? "pressed" : "released", len); - if (dev->input) - input_report_key(dev->input, BTN_0, data[3]); + uvc_input_report_key(dev, BTN_0, data[3]); } else { uvc_trace(UVC_TRACE_STATUS, "Stream %u error event %02x %02x " "len %d.\n", data[1], data[2], data[3], len); -- cgit v1.2.3