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author | Winkler, Tomas <tomas.winkler@intel.com> | 2016-09-15 07:27:38 (GMT) |
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committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-09-16 12:47:36 (GMT) |
commit | e17acbbb69d30836a8c12e2c09bbefab8656693e (patch) | |
tree | ec99a60f272655fbeb33d08eb6fd81183d819ede /init | |
parent | ebfd7532e985818a327906e011f3e43c8ddfdd74 (diff) | |
download | linux-e17acbbb69d30836a8c12e2c09bbefab8656693e.tar.xz |
tpm/tpm_crb: implement tpm crb idle state
The register TPM_CRB_CTRL_REQ_x contains bits goIdle and cmdReady for
SW to indicate that the device can enter or should exit the idle state.
The legacy ACPI-start (SMI + DMA) based devices do not support these
bits and the idle state management is not exposed to the host SW.
Thus, this functionality only is enabled only for a CRB start (MMIO)
based devices.
Based on Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
original patch:
'tpm_crb: implement power tpm crb power management'
To keep the implementation local to the hw we don't use wait_for_tpm_stat
for polling the TPM_CRB_CTRL_REQ.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions