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[media] Docbook: Document struct analog_parameters 

That struct inside dvb-frontend.h stores some parameters
from V4L2 API (videodev2.h), in order to be used by the
hybrid analog/digital TV tuners.

Document it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2015-08-22 09:58:26 -03:00
parent 0c68b1ce85
commit 1a77763428
1 changed files with 18 additions and 4 deletions
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22
drivers/media/dvb-core/dvb_frontend.h
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@ -91,6 +91,20 @@ struct dvb_tuner_info {
u32 bandwidth_step; u32 bandwidth_step;
}; };
/**
* struct analog_parameters - Parameters to tune into an analog/radio channel
*
* @frequency: Frequency used by analog TV tuner (either in 62.5 kHz step,
* for TV, or 62.5 Hz for radio)
* @mode: Tuner mode, as defined on enum v4l2_tuner_type
* @audmode: Audio mode as defined for the rxsubchans field at videodev2.h,
* e. g. V4L2_TUNER_MODE_*
* @std: TV standard bitmap as defined at videodev2.h, e. g. V4L2_STD_*
*
* Hybrid tuners should be supported by both V4L2 and DVB APIs. This
* struct contains the data that are used by the V4L2 side. To avoid
* dependencies from V4L2 headers, all enums here are declared as integers.
*/
struct analog_parameters { struct analog_parameters {
unsigned int frequency; unsigned int frequency;
unsigned int mode; unsigned int mode;
@ -111,16 +125,16 @@ enum tuner_param {
/** /**
* enum dvbfe_algo - defines the algorithm used to tune into a channel * enum dvbfe_algo - defines the algorithm used to tune into a channel
* *
* @DVBFE_ALGO_HW: (Hardware Algorithm) * @DVBFE_ALGO_HW: Hardware Algorithm -
* Devices that support this algorithm do everything in hardware * Devices that support this algorithm do everything in hardware
* and no software support is needed to handle them. * and no software support is needed to handle them.
* Requesting these devices to LOCK is the only thing required, * Requesting these devices to LOCK is the only thing required,
* device is supposed to do everything in the hardware. * device is supposed to do everything in the hardware.
* *
* @DVBFE_ALGO_SW: (Software Algorithm) * @DVBFE_ALGO_SW: Software Algorithm -
* These are dumb devices, that require software to do everything * These are dumb devices, that require software to do everything
* *
* @DVBFE_ALGO_CUSTOM: (Customizable Agorithm) * @DVBFE_ALGO_CUSTOM: Customizable Agorithm -
* Devices having this algorithm can be customized to have specific * Devices having this algorithm can be customized to have specific
* algorithms in the frontend driver, rather than simply doing a * algorithms in the frontend driver, rather than simply doing a
* software zig-zag. In this case the zigzag maybe hardware assisted * software zig-zag. In this case the zigzag maybe hardware assisted
@ -128,7 +142,7 @@ enum tuner_param {
* this algorithm, in conjunction with the search and track * this algorithm, in conjunction with the search and track
* callbacks, utilizes the driver specific algorithm. * callbacks, utilizes the driver specific algorithm.
* *
* @DVBFE_ALGO_RECOVERY: (Recovery Algorithm) * @DVBFE_ALGO_RECOVERY: Recovery Algorithm -
* These devices have AUTO recovery capabilities from LOCK failure * These devices have AUTO recovery capabilities from LOCK failure
*/ */
enum dvbfe_algo { enum dvbfe_algo {