Commit graph

10 commits

Author SHA1 Message Date
Viresh Kumar 2206ea9cf8 greybus: interface: move gb_module_interface_init() to interface.c
That's where it belong to. Also rename it in a similar way to:
gb_interface_create() and gb_interface_destroy().

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-11-14 13:49:04 -08:00
Alex Elder c41b4f1212 greybus: only initialize interfaces when up
Rather than bringing up all interfaces described in the manifest,
wait until we get a link up message, and at that time go initialize
the link.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-22 17:22:22 +08:00
Matt Porter 6271b5bac9 greybus: module: add gb_module_find()
Add support for getting a struct gb_module from a
Module ID.

Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-22 13:57:49 +08:00
Alex Elder 6ff5e00a17 greybus: remove cports and strings from gb_module
We no longer keep copies of strings found in the manifuest in
a module's strings array, so we can get rid of the strings array.
Similarly, the new manifest parsing code sets up connections for
each cport id advertised for a module, so the cport array is
no longer needed either.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-21 06:28:23 +08:00
Alex Elder 09c521dc0a greybus: drop gb_* device fields from gb_module
A struct gb_module has a bunch of fields from the earlier skeleton
code, where a module was assumed to possibly have one of every
type of device available on the GP Bridge.  The manifest parsing
code changed it so these things will be related to connection
endpoints, so these gb_module fields are no longer needed.

A few of these (battery and sdio) haven't been implemented the "new
way" yet, so just leave a bit of the code that was there commented
out for now.

Also, gb_tty seems to be partially implemented and I don't want to
remove that without knowing where it's headed, so that one stays.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-21 06:27:37 +08:00
Alex Elder 574341c672 greybus: add device initialization
Set up the infrastructure for initializing connections based on
their protocol.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-17 18:14:11 +02:00
Alex Elder 63cc932b02 greybus: October 1 updates
Update the definitions in "greybus_manifest.h" to reflect the
changes to the Greybus specification made on October 1.

They are:
    - renaming "device" to be "interface"
    - renumbering greybus descriptor type
    - eliminating the notion of a "function"
    - defining a CPort's protocol in the CPort descriptor
    - having a "class" take on the types previously used for "function"
    - renaming "serial number" to be "unique id" (for now)
    - relying on an interface's maximum cport id to determine how
      much device+cport address space the interface consumes
    - adding a simple class descriptor
    - renaming gb_interface->interface_id to be gb_interface->id

This also reorders some things to match ordering in the document,
and adds some commentary for the various structures.

Since greybus_function_type is gone, we eliminate the "type" field
from a function structure.  (Functions are going away, next.)

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-02 21:22:04 -07:00
Alex Elder b09c94a1b7 greybus: start improving manifest parsing
Currently the module manifest parsing code is sort of representative
only and is not really very useful.

This patch begins doing "real" parsing of the module manifest.
It scans the module manifest to identify the descriptors it holds.
It then verifies there's only one module descriptor found, and
initializes new some fields in the gb_module structure based on what
it contains (converting what's found to native byte order).
Note that if anything unexpected is found or other errors occur when
parsing the manifest, the parse fails.

Because we now save this converted information when it's parsed we
no longer have a greybus_descriptor_module struct within a struct
gb_module.  And because we've already converted these values, we can
do a little less work displaying values in sysfs.  (We also now show
vendor, product, and version values in the right byte order.)  This
eliminates the need for greybus_string(), so get rid of it.

It also slightly simplifies the greybus module matching code.

Move some existing parsing code into a new file, "manifest.c".

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-02 21:18:41 -07:00
Alex Elder 8c12cde3c2 greybus: define greybus interface abstraction
Define new source files "interface.h" and "interface.c" to contain
the definitions of the Greybus interface abstraction.  A Greybus
interface represents a UniPro device present in a UniPro module.
For Project Ara, each interface block on a module implements a
UniPro interface.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-02 21:17:20 -07:00
Alex Elder e1e9dbddfe greybus: isolate greybus module code
Define new source files "module.h" and "module.c" to separate the
definitions of the Greybus module abstraction from other code.

Rename "greybus_module" to be "gb_module", for brevity.  Do the same
for a few other symbols with "greybus_module" in their names.  A few
(like greybus_module_id) are more visible outside this kernel module
so we'll keep their names more descriptive.

Add a definition for U8_MAX in "kernel_ver.h" (it appeared in 3.14).

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2014-10-02 21:17:20 -07:00