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tpm: update PPI documentation to address the location change.

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Updated Documentation/ABI/testing/sysfs-driver-ppi in order to explain
where PPI attributes are located and how backwards compatibility is
addressed.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
This commit is contained in:
Jarkko Sakkinen 2015-05-20 16:44:40 +03:00 committed by Peter Huewe
parent 9b774d5cf2
commit b8e98dcdc5
1 changed files with 12 additions and 7 deletions
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19
Documentation/ABI/testing/sysfs-driver-ppi
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@ -1,4 +1,4 @@
What: /sys/devices/pnp0/<bus-num>/ppi/
What: /sys/class/tpm/tpmX/ppi/
Date: August 2012
Kernel Version: 3.6
Contact: xiaoyan.zhang@intel.com
@ -8,9 +8,14 @@ Description:
folder makes sense. The folder path can be got by command
'find /sys/ -name 'pcrs''. For the detail information of PPI,
please refer to the PPI specification from
http://www.trustedcomputinggroup.org/
What: /sys/devices/pnp0/<bus-num>/ppi/version
In Linux 4.2 ppi was moved to the character device directory.
A symlink from tpmX/device/ppi to tpmX/ppi to provide backwards
compatibility.
What: /sys/class/tpm/tpmX/ppi/version
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description:
@ -18,7 +23,7 @@ Description:
platform.
This file is readonly.
What: /sys/devices/pnp0/<bus-num>/ppi/request
What: /sys/class/tpm/tpmX/ppi/request
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description:
@ -28,7 +33,7 @@ Description:
integer value range from 1 to 160, and 0 means no request.
This file can be read and written.
What: /sys/devices/pnp0/00:<bus-num>/ppi/response
What: /sys/class/tpm/tpmX/ppi/response
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description:
@ -37,7 +42,7 @@ Description:
: <response description>".
This file is readonly.
What: /sys/devices/pnp0/<bus-num>/ppi/transition_action
What: /sys/class/tpm/tpmX/ppi/transition_action
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description:
@ -47,7 +52,7 @@ Description:
description>".
This file is readonly.
What: /sys/devices/pnp0/<bus-num>/ppi/tcg_operations
What: /sys/class/tpm/tpmX/ppi/tcg_operations
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description:
@ -58,7 +63,7 @@ Description:
This attribute is only supported by PPI version 1.2+.
This file is readonly.
What: /sys/devices/pnp0/<bus-num>/ppi/vs_operations
What: /sys/class/tpm/tpmX/ppi/vs_operations
Date: August 2012
Contact: xiaoyan.zhang@intel.com
Description: