[PATCH v10 0/2] soc: qcom: Add SoC info driver

[Imran Khan <kimran@codeaurora.org>]

This is patchset v10, it takes care of review comments provided in
v8 and v9. 

v9 --> v10:
 - Removed version specific socinfo objects.
 - Added a couple of PMIC models in pmic_model array.
 - Corrected interpretation of PMIC information related
   fields.
v8 --> v9:
 - Removed qcom_odm attribute.
 - Re-introduce soc_of_id array to map soc-id
   into human readable string.
v7 --> v8:
 - Fixed compilation warning detected in v7
v6 --> v7:
 - Some minor style changes
 - Rather than showing string for h/w types, just show the
   number obtained from SMEM. The reader of this number
   is supposed to parse this into a human readable string 
   as this information may be different for different ODMs
 - Create an attribute 'qcom_odm' depending on the presence
   of corresponding property in SMEM DT entry. This information
   can be used for ODM specific interpretation of SMEM socinfo
   content
 - Read machine value from DT, rather than using soc-id as index
   in an ever increasing array of machine names

v5 --> v6:
 - use dev_ext_attribute to represent SMEM image items
 - Avoid redundant function calls
 - Avoid use of unnecessary global variables
 - Remove redundant enums
 - Avoid redundant checking of socinfo being NULL or not
 - Avoid redundant checking of socinfo format version
 - Rename show/store function of attributes as _show/_store
   rather than _get/_set
 - Use an array to represent socinfo attributes and create
   attribute files in a loop depending on the minimum 
   socinfo format version for which these attributes are 
   supported
 - if obtained socinfo format version is greater than the
   maximum known version return an error rather than falling
   back to maximum known version
 
v4 --> v5:
 - Removed redundant function socinfo_print

v3 --> v4:
 - Corrected makefile so that smem and socinfo are treated as one module
 - Moved the code snippet to get socinfo smem item into socinfo.c
 - Removed redundant use of socinfo major version as it is always zero
 - Removed unused enums
 - Removed redundant indirections
 - Use image_version object to store information about each entry in the
   smem image table
 - Replaced usage of snprintf with sprintf and scnprintf
 - Get the address of image version table at the beginning and setup
   image version attributes only if image version table is available
 - Do the same for platform_subtype
 - Make different type of image version objects read only or readable/
   writable depending on their types. For example apps image attributes
   can be modified via sysfs but the same can't be done for modem image
 - Show PMIC model in a human readable form rather than a numeric number
 - Avoid using table in single sysfs entry
 - Removed checkpatch warnings about S_IRUGO

v2 --> v3:
 - Add support to toss soc information data into entropy pool
 - Since socinfo is rolled into smem driver, compile the
   relevant portion of socinfo driver with smem driver
 
v1 --> v2:
 - Removed inclusion of system_misc.h
 - merged socinfo.h into socinfo.c
 - made platform type and subtype arrays static
 - replaced uint32_t with u32
 - made functions static to avoid exposing vendor specific interface
 - Replaced usage of IS_ERR_OR_NULL with IS_ERR.
 - Remove raw-id attribute usage as human readable soc-id will suffice here
 - Avoid using a separate platform driver for socinfo by rolling it into smem driver itself.
   The sysfs setup is being done in a separate file (socinfo.c)
 - Replaced macro BUILD_ID_LENGTH with  SMEM_SOCINFO_BUILD_ID_LENGTH.
 - For failure cases where socinfo can not be read use a single dummy socinfo with error values.
 - Removed usage of early_machine_is_xxx.


Imran Khan (2):
  soc: qcom: Add SoC info driver
  Documentation/ABI: Add ABI infomation for QCOM socinfo driver

 .../ABI/testing/sysfs-driver-qcom_socinfo          | 171 +++++++
 drivers/soc/qcom/Kconfig                           |   1 +
 drivers/soc/qcom/Makefile                          |   3 +-
 drivers/soc/qcom/smem.c                            |   5 +
 drivers/soc/qcom/socinfo.c                         | 518 +++++++++++++++++++++
 5 files changed, 697 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-qcom_socinfo
 create mode 100644 drivers/soc/qcom/socinfo.c

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