Add DVBv5 methods to retrieve QoS statistics. Those methods allow per-layer and global statistics. Implemented 2 QoS statistics on mb86a20s, one global only (signal strengh), and one per layer (BER). Tested with a modified version of dvbv5-zap, that allows monitoring those stats. Test data follows Tested with 1-segment at layer A, and 12-segment at layer B: [ 3735.973058] i2c i2c-4: mb86a20s_layer_bitrate: layer A bitrate: 440 kbps; counter = 196608 (0x030000) [ 3735.976803] i2c i2c-4: mb86a20s_layer_bitrate: layer B bitrate: 16851 kbps; counter = 8257536 (0x7e0000) a) Global stats: Signal strength: QOS_SIGNAL_STRENGTH[0] = 4096 BER (sum of BE count and bit counts for both layers): QOS_BIT_ERROR_COUNT[0] = 1087865 QOS_TOTAL_BITS_COUNT[0] = 67043313 b) Per-layer stats: Layer A BER: QOS_BIT_ERROR_COUNT[1] = 236 QOS_TOTAL_BITS_COUNT[1] = 917490 Layer B BER: QOS_BIT_ERROR_COUNT[2] = 1087629 QOS_TOTAL_BITS_COUNT[2] = 66125823 TODO: - add more statistics at mb86a20s; - implement support for DTV_QOS_ENUM; - some cleanups at get_frontend logic at dvb core, to avoid it to be called outside the DVB thread loop. All the above changes can be done a little later during this development cycle, so my plan is to merge it upstream at the beginning of the next week, to allow others to test. I added an ugly hack on my experimental v4l-utils tree, to allow testing it: http://git.linuxtv.org/mchehab/experimental-v4l-utils.git/shortlog/refs/heads/stats GIT url for it is: git://linuxtv.org/mchehab/experimental-v4l-utils.git stats --- v6: Add DocBook documentation. v7: Some fixes as suggested by Antti v8: Documentation fix, compilation fix and name the stats struct, for its reusage inside the core v9: counters need 32 bits. So, change the return data types to s32/u32 types v10: Counters changed to 64 bits for monotonic increment Don't create a separate get_stats callback. get_frontend is already good enough for it. Mauro Carvalho Chehab (15): mb86a20s: improve error handling at get_frontend dvb: Add DVBv5 stats properties for Quality of Service dvb: the core logic to handle the DVBv5 QoS properties mb86a20s: Update QoS statistics at FE read_status mb86a20s: functions reorder mb86a20s: Fix i2c gate on error mb86a20s: improve debug for RF level mb86a20s: fix interleaving and FEC retrival mb86a20s: convert it to use dev_info/dev_err/dev_dbg mb86a20s: -EBUSY is expected when getting QoS measures mb86a20s: make AGC work better mb86a20s: Some improvements for BER measurement mb86a20s: improve bit error count for BER dvb: increase API version mb86a20s: global stat is just a sum, and not an increment Documentation/DocBook/media/dvb/dvbapi.xml | 2 +- Documentation/DocBook/media/dvb/dvbproperty.xml | 115 ++- drivers/media/dvb-core/dvb_frontend.c | 53 ++ drivers/media/dvb-core/dvb_frontend.h | 11 + drivers/media/dvb-frontends/mb86a20s.c | 1024 ++++++++++++++++++----- include/uapi/linux/dvb/frontend.h | 83 +- include/uapi/linux/dvb/version.h | 2 +- 7 files changed, 1066 insertions(+), 224 deletions(-) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
