openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/drivers/media/platform
History
Hans Verkuil 1e33936d3b media: cec-gpio: add HDMI CEC GPIO driver 
Add a simple HDMI CEC GPIO driver that sits on top of the cec-pin framework.

While I have heard of SoCs that use the GPIO pin for CEC (apparently an
early RockChip SoC used that), the main use-case of this driver is to
function as a debugging tool.

By connecting the CEC line to a GPIO pin on a Raspberry Pi 3 for example
it turns it into a CEC debugger and protocol analyzer.

With 'cec-ctl --monitor-pin' the CEC traffic can be analyzed.

But of course it can also be used with any hardware project where the
HDMI CEC line is hooked up to a pull-up gpio line.

In addition this has (optional) support for tracing HPD changes if the
HPD is connected to a GPIO.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
 		2017-09-23 07:51:44 -04:00
..
am437x media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
atmel media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
blackfin media: blackfin: bfin_capture: constify vb2_ops structures 2017-08-20 08:03:33 -04:00
cec-gpio media: cec-gpio: add HDMI CEC GPIO driver 2017-09-23 07:51:44 -04:00
coda media: coda/imx-vdoa: Check for platform_get_resource() error 2017-08-20 08:26:53 -04:00
davinci media: platform: constify videobuf_queue_ops structures 2017-08-26 14:30:25 -04:00
exynos-gsc media: exynos-gsc: constify v4l2_m2m_ops structures 2017-08-20 08:04:00 -04:00
exynos4-is media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
marvell-ccic media: platform: make video_device const 2017-08-27 08:44:30 -04:00
meson media: platform: Add Amlogic Meson AO CEC Controller driver 2017-08-09 10:45:26 -04:00
mtk-jpeg media: vcodec: mediatek: constify v4l2_m2m_ops structures 2017-08-20 08:03:55 -04:00
mtk-mdp media: mtk-mdp: use IS_ERR to check return value of of_clk_get 2017-08-20 08:20:42 -04:00
mtk-vcodec media: mtk-vcodec: fix vp9 decode error 2017-08-08 06:26:48 -04:00
mtk-vpu IOMMU Updates for Linux v4.12 2017-05-09 15:15:47 -07:00
omap media: v4l: omap_vout: vrfb: initialize DMA flags 2017-08-08 06:35:10 -04:00
omap3isp media: omap3isp: fix uninitialized variable use 2017-08-26 20:14:42 -04:00
qcom media: qcom: camss: Make function vfe_set_selection static 2017-09-23 07:23:49 -04:00
rcar-vin media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
s3c-camif media: s3c-camif: don't set driver_version 2017-08-08 06:00:26 -04:00
s5p-cec media: s5p-cec: add NACK detection support 2017-09-23 07:29:30 -04:00
s5p-g2d media: platform: make video_device const 2017-08-27 08:44:30 -04:00
s5p-jpeg media: s5p-jpeg: directly use parsed subsampling on exynos5433 2017-08-20 08:02:21 -04:00
s5p-mfc [media] s5p-mfc: fix spelling mistake: "destionation" -> "destination" 2017-06-13 14:01:10 -03:00
soc_camera media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
sti media: stih-cec: use CEC_CAP_DEFAULTS 2017-08-26 08:36:45 -04:00
stm32 media: stm32-dcmi: g_/s_selection crop support 2017-08-26 14:10:41 -04:00
ti-vpe media: platform: make video_device const 2017-08-27 08:44:30 -04:00
vimc media: vimc: constify video_subdev structures 2017-08-20 08:04:30 -04:00
vivid media: vivid: fix incorrect HDMI input/output CEC logging 2017-08-26 08:36:29 -04:00
vsp1 media: v4l: vsp1: Allow entities to participate in the partition algorithm 2017-08-20 09:32:49 -04:00
xilinx media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
Kconfig media: cec-gpio: add HDMI CEC GPIO driver 2017-09-23 07:51:44 -04:00
Makefile media: cec-gpio: add HDMI CEC GPIO driver 2017-09-23 07:51:44 -04:00
arv.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
fsl-viu.c media: platform: make video_device const 2017-08-27 08:44:30 -04:00
m2m-deinterlace.c media: platform: make video_device const 2017-08-27 08:44:30 -04:00
mx2_emmaprp.c media: platform: make video_device const 2017-08-27 08:44:30 -04:00
pxa_camera.c media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
rcar-fcp.c v4l: rcar-fcp: Add an API to retrieve the FCP device 2017-06-09 12:25:36 +01:00
rcar_drif.c [media] media: platform: rcar_drif: Add DRIF support 2017-06-20 07:07:37 -03:00
rcar_fdp1.c media: rcar_fdp1: constify vb2_ops structure 2017-07-19 15:03:55 -04:00
rcar_jpu.c media: V4L2: platform: rcar_jpu: constify v4l2_m2m_ops structures 2017-08-20 08:03:51 -04:00
sh_veu.c [media] vb2: replace void *alloc_ctxs by struct device *alloc_devs 2016-07-08 14:45:07 -03:00
sh_vou.c [media] media drivers: annotate fall-through 2017-05-19 07:10:03 -03:00
via-camera.c media: platform: make video_device const 2017-08-27 08:44:30 -04:00
via-camera.h
…
video-mux.c media: platform: video-mux: convert to multiplexer framework 2017-07-20 06:59:25 -04:00
vim2m.c media: platform: make video_device const 2017-08-27 08:44:30 -04:00