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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-05-03 11:44:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-03 19:14:30 +0300 |
| commit | 4c5bb6eb4055adcefaeb5da56dfbecf7df3695d7 (patch) | |
| tree | 752254169a10e3973a68f1bbfbf306b81fa95050 /drivers/hwtracing/intel_th/intel_th.h | |
| parent | aac8da65174a35749fcf21dbca4c1be314b562b5 (diff) | |
| download | linux-4c5bb6eb4055adcefaeb5da56dfbecf7df3695d7.tar.xz | |
intel_th: Only report useful IRQs to subdevices
The only type of IRQ triggering event that is useful to us at the moment
is the "last block" interrupt of the MSU. This interrupt can only be
enabled via "MINTCTL" register that doesn't exist in earlier version of
the Intel TH.
Enumerate the presence of MINTCTL via per-device driver data structure
and only instantiate the IRQ resource for subdevices if this capability
is present.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/intel_th/intel_th.h')
| -rw-r--r-- | drivers/hwtracing/intel_th/intel_th.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hwtracing/intel_th/intel_th.h b/drivers/hwtracing/intel_th/intel_th.h index 59038215489a..8b986ba160e4 100644 --- a/drivers/hwtracing/intel_th/intel_th.h +++ b/drivers/hwtracing/intel_th/intel_th.h @@ -44,10 +44,12 @@ struct intel_th_output { /** * struct intel_th_drvdata - describes hardware capabilities and quirks * @tscu_enable: device needs SW to enable time stamping unit + * @has_mintctl: device has interrupt control (MINTCTL) register * @host_mode_only: device can only operate in 'host debugger' mode */ struct intel_th_drvdata { unsigned int tscu_enable : 1, + has_mintctl : 1, host_mode_only : 1; }; |