Commit 42bd6f59 authored by Jacek Anaszewski's avatar Jacek Anaszewski Committed by Bryan Wu
Browse files

media: Add registration helpers for V4L2 flash sub-devices 



This patch adds helper functions for registering/unregistering
LED Flash class devices as V4L2 sub-devices. The functions should
be called from the LED subsystem device driver. In case the
support for V4L2 Flash sub-devices is disabled in the kernel
config the functions' empty versions will be used.

Signed-off-by: default avatarJacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarBryan Wu <cooloney@gmail.com>
parent 86217651

drivers/media/v4l2-core/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -44,6 +44,17 @@ config V4L2_MEM2MEM_DEV 
        tristate

        depends on VIDEOBUF2_CORE



# Used by LED subsystem flash drivers

config V4L2_FLASH_LED_CLASS

	tristate "V4L2 flash API for LED flash class devices"

	depends on VIDEO_V4L2_SUBDEV_API

	depends on LEDS_CLASS_FLASH

	---help---

	  Say Y here to enable V4L2 flash API support for LED flash

	  class drivers.



	  When in doubt, say N.



# Used by drivers that need Videobuf modules

config VIDEOBUF_GEN

	tristate

drivers/media/v4l2-core/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ obj-$(CONFIG_VIDEO_TUNER) += tuner.o 


obj-$(CONFIG_V4L2_MEM2MEM_DEV) += v4l2-mem2mem.o



obj-$(CONFIG_V4L2_FLASH_LED_CLASS) += v4l2-flash-led-class.o



obj-$(CONFIG_VIDEOBUF_GEN) += videobuf-core.o

obj-$(CONFIG_VIDEOBUF_DMA_SG) += videobuf-dma-sg.o

obj-$(CONFIG_VIDEOBUF_DMA_CONTIG) += videobuf-dma-contig.o

drivers/media/v4l2-core/v4l2-flash-led-class.c

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+710 −0

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include/media/v4l2-flash-led-class.h

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+148 −0

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