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This patch adds support to read u64 sensor values. This also adds
changes to the core and the backend implementation code to make this
API as the base call. Host can use this new API to read sensors
upto 64bits.
This adds a list to store the pointer to the kernel u32 buffer, for
older kernels making async sensor u32 reads.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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In P9, when a core enters a stop state, its clocks will be stopped
to save power and hence we will not be able to perform a scom
operation to read the DTS temperature sensor. Hence, assert
a special wakeup on cores that have entered a stop state in order to
successfully complete the scom operation.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
[rlippert@google.com: Clear special wakeup only when it succeeds]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch simply adds sensors nodes for the core temperatures. It
uses the core PIR as a resource identifier to fit in the sensor model.
The device tree nodes use the new layout.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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This patch adds a new sensor family for Digital Temperature Sensors
and a new resource class to capture the core temperatures.
Each core has four DTS located in different zones (LSU, ISU, FXU, L3).
The max of the four temperatures is computed and returned for the core
as well as a global trip point value. This is based on the meltbox tool.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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