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- add lock loss irq handler

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- add modulator ioctl mutex
- some more documentation about modulator properties
This commit is contained in:
Ralph Metzler
2017-10-17 23:49:31 +02:00
parent 4a93f79093
commit 0f05b1988a
6 changed files with 91 additions and 24 deletions
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14
docs/modulator
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@@ -102,7 +102,7 @@ MODULATOR_STATUS and MODULATOR_RESET have been added to debug
possible problems with too high temperatures (overtemperature)
or PLL lock loss on FSM type cards.
The MODUALTOR_STATUS property returns a __u32 with the following status bits:
The MODULATOR_STATUS property returns a __u32 with the following status bits:
- bit 0 : Lock status 1=lock OK, 0 = lock lost
@@ -113,8 +113,18 @@ The MODUALTOR_STATUS property returns a __u32 with the following status bits:
- bit 2 : 0 = no overtemperature
1 = overtemperature detected
- bit 4 : 0 = PCIe link OK
1 = PCIe link lost
In case of overtemperratur or PCIe link loss you will have to reboot the PC.
Putting a MODULATOR_STATUS property with value 2 will enable the lost lock
interrupt. This will set the gain to 0 and the attenuation to 31 in case
of a lost PLL lock.
The MODULATOR_RESET property can be used to reset the modulator without
needing to reload the driver or rebooting.
needing to reload the driver or rebooting in case of PLL lock loss.
All channels should be stopped before using it and restarted after using it.
Otherwise, results are unpredictable.