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authorAndy Walls <awalls@md.metrocast.net>2010-07-18 19:57:25 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-08-08 23:42:54 -0300
commit5a28d9a320c865007da830c065bcaecfe91b3932 (patch)
tree60ca62e075c8b917165582707f1b0748512a471e /include/media/v4l2-subdev.h
parentd06d5777b211112e8355e2f5a700c6a9babfdd6f (diff)
V4L/DVB: v4l2_subdev, cx23885: Differentiate IR carrier sense and I/O pin inversion
There is a distinction on IR Tx for the CX2388[578] chips of carrier sense inversion (space is a carrier burst and mark is no burst) and I/O pin level inversion (0 is high output level, 1 is low output level). Allow the caller to set these parameters distinctly as v4l2_subdevice IR parameters. This permits the IR device to be configured and enabled without the IR Tx LED being on during idle/space time due to an external hardware level inversion Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/v4l2-subdev.h')
-rw-r--r--include/media/v4l2-subdev.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 9195ad490ee..a780cca185f 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -379,7 +379,10 @@ struct v4l2_subdev_ir_parameters {
u32 max_pulse_width; /* ns, valid only for baseband signal */
unsigned int carrier_freq; /* Hz, valid only for modulated signal*/
unsigned int duty_cycle; /* percent, valid only for modulated signal*/
- bool invert; /* logically invert sense of mark/space */
+ bool invert_level; /* invert signal level */
+
+ /* Tx only */
+ bool invert_carrier_sense; /* Send 0/space as a carrier burst */
/* Rx only */
u32 noise_filter_min_width; /* ns, min time of a valid pulse */