[RFC PATCHv1 0/2] Export SoC info through sysfs
Maxime Coquelin
maxime.coquelin-nonst at stericsson.com
Wed Mar 9 11:59:19 EST 2011
Here is the first version of the proposal to export SoC related information to user-space through sysFS interface.
This serie is to continue what has been discussed on the "socinfo" thread created by Eduardo Valentin:
https://lkml.org/lkml/2010/5/11/364
The first patch introduces the common part, which provides an interface to the platform to register its name, and exports platform-defined IDs to user-space.
The IDs strings can be provided in two ways: either with a pointer to the string, or by a callback returning the string.
The second patch is given as example for the ux500 architecture. It registers with the machine name "DB8500", and exports 3 informations (SoC unique ID, sili
con revision and silicon process).
Here is the output for DB8500:
root at ME:/sys/devices/system/soc ls -l
-r--r--r-- 1 root root 4096 Jan 11 02:43 mach_name
-r--r--r-- 1 root root 4096 Jan 11 02:43 process
-r--r--r-- 1 root root 4096 Jan 11 02:43 revision
-r--r--r-- 1 root root 4096 Jan 11 02:43 soc_id
root at ME:/sys/devices/system/soc cat mach_name
DB8500
root at ME:/sys/devices/system/soc cat process
Standard
root at ME:/sys/devices/system/soc cat revision
2.0
root at ME:/sys/devices/system/soc cat soc_id
2ba07ce9e5835d6185321e9577462ef2ea2129cf
Any comments are welcome.
Note that I will be off from 13th to 21th of March.
Regards,
Maxime
-------------------------------------------------------------------------------
Maxime Coquelin (2):
Export SoC info through sysfs
ux500: Export U8500 SoC info through sysfs
arch/arm/mach-ux500/id.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/base/Kconfig | 4 ++
drivers/base/Makefile | 1 +
drivers/base/soc.c | 88 ++++++++++++++++++++++++++++++++++++++++++
include/linux/sys_soc.h | 33 ++++++++++++++++
5 files changed, 222 insertions(+), 0 deletions(-)
create mode 100644 drivers/base/soc.c
create mode 100644 include/linux/sys_soc.h
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