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Commit 42bd6f59 authored Jun 19, 2015 by Jacek Anaszewski Committed by Bryan Wu Jun 22, 2015

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: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Bryan 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

0 → 100644

+710 −0

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

0 → 100644

+148 −0

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