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tpm: update PPI documentation to address the location change.

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>

authored by

Jarkko Sakkinen and committed by
Peter Huewe b8e98dcd 9b774d5c

+12 -7
+12 -7
Documentation/ABI/testing/sysfs-driver-ppi
··· 1 - What: /sys/devices/pnp0/<bus-num>/ppi/ 1 + What: /sys/class/tpm/tpmX/ppi/ 2 2 Date: August 2012 3 3 Kernel Version: 3.6 4 4 Contact: xiaoyan.zhang@intel.com ··· 8 8 folder makes sense. The folder path can be got by command 9 9 'find /sys/ -name 'pcrs''. For the detail information of PPI, 10 10 please refer to the PPI specification from 11 + 11 12 http://www.trustedcomputinggroup.org/ 12 13 13 - What: /sys/devices/pnp0/<bus-num>/ppi/version 14 + In Linux 4.2 ppi was moved to the character device directory. 15 + A symlink from tpmX/device/ppi to tpmX/ppi to provide backwards 16 + compatibility. 17 + 18 + What: /sys/class/tpm/tpmX/ppi/version 14 19 Date: August 2012 15 20 Contact: xiaoyan.zhang@intel.com 16 21 Description: ··· 23 18 platform. 24 19 This file is readonly. 25 20 26 - What: /sys/devices/pnp0/<bus-num>/ppi/request 21 + What: /sys/class/tpm/tpmX/ppi/request 27 22 Date: August 2012 28 23 Contact: xiaoyan.zhang@intel.com 29 24 Description: ··· 33 28 integer value range from 1 to 160, and 0 means no request. 34 29 This file can be read and written. 35 30 36 - What: /sys/devices/pnp0/00:<bus-num>/ppi/response 31 + What: /sys/class/tpm/tpmX/ppi/response 37 32 Date: August 2012 38 33 Contact: xiaoyan.zhang@intel.com 39 34 Description: ··· 42 37 : <response description>". 43 38 This file is readonly. 44 39 45 - What: /sys/devices/pnp0/<bus-num>/ppi/transition_action 40 + What: /sys/class/tpm/tpmX/ppi/transition_action 46 41 Date: August 2012 47 42 Contact: xiaoyan.zhang@intel.com 48 43 Description: ··· 52 47 description>". 53 48 This file is readonly. 54 49 55 - What: /sys/devices/pnp0/<bus-num>/ppi/tcg_operations 50 + What: /sys/class/tpm/tpmX/ppi/tcg_operations 56 51 Date: August 2012 57 52 Contact: xiaoyan.zhang@intel.com 58 53 Description: ··· 63 58 This attribute is only supported by PPI version 1.2+. 64 59 This file is readonly. 65 60 66 - What: /sys/devices/pnp0/<bus-num>/ppi/vs_operations 61 + What: /sys/class/tpm/tpmX/ppi/vs_operations 67 62 Date: August 2012 68 63 Contact: xiaoyan.zhang@intel.com 69 64 Description: