linux.git/include/linux/fpga, branch v4.18

fpga: use SPDX

2018-05-25T16:23:56+00:00

Replace GPLv2 boilerplate with SPDX in FPGA code that came from me or
from Altera.

Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

fpga: region: change api, add fpga_region_create/free

2018-05-25T16:23:56+00:00

Add fpga_region_create/free API functions.

Change fpga_region_register to take FPGA region struct as the only
parameter.  Change fpga_region_unregister to return void.

  struct fpga_region *fpga_region_create(struct device *dev,
                        struct fpga_manager *mgr,
                        int (*get_bridges)(struct fpga_region *));
  void fpga_region_free(struct fpga_region *region);
  int fpga_region_register(struct fpga_region *region);
  void fpga_region_unregister(struct fpga_region *region);

Remove groups storage from struct fpga_region, it's not
needed.  Callers can just "region->dev.groups = groups;"
after calling fpga_region_create.

Update the drivers that call fpga_region_register with the new API.

Signed-off-by: Alan Tull 
Signed-off-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: bridge: change api, don't use drvdata

2018-05-25T16:23:55+00:00

Change fpga_bridge_register to not set drvdata.  This is to support
the case where a PCIe device can have more than one bridge.

Add API functions to create/free the fpga bridge struct. Change
fpga_bridge_register/unregister to take FPGA bridge struct as
the only parameter.

  struct fpga_bridge
  *fpga_bridge_create(struct device *dev, const char *name,
                      const struct fpga_bridge_ops *br_ops,
                      void *priv);
  void fpga_bridge_free(struct fpga_bridge *br);
  int fpga_bridge_register(struct fpga_bridge *br);
  void fpga_bridge_unregister(struct fpga_bridge *br);

Update the drivers that call fpga_bridge_register with the new API.

Signed-off-by: Alan Tull 
Reported-by: Jiuyue Ma 
Signed-off-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: manager: change api, don't use drvdata

2018-05-25T16:23:55+00:00

Change fpga_mgr_register to not set or use drvdata.  This supports
the case where a PCIe device has more than one manager.

Add fpga_mgr_create/free functions.  Change fpga_mgr_register and
fpga_mgr_unregister functions to take the mgr struct as their only
parameter.

  struct fpga_manager *fpga_mgr_create(struct device *dev,
                const char *name,
                const struct fpga_manager_ops *mops,
                void *priv);
  void fpga_mgr_free(struct fpga_manager *mgr);
  int fpga_mgr_register(struct fpga_manager *mgr);
  void fpga_mgr_unregister(struct fpga_manager *mgr);

Update the drivers that call fpga_mgr_register with the new API.

Signed-off-by: Alan Tull 
[Moritz: Fixup whitespace issue]
Reported-by: Jiuyue Ma 
Signed-off-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: add attribute groups

2017-11-28T15:30:38+00:00

Make it easy to add attributes to low level FPGA drivers the right
way.  Add attribute groups pointers to structures that are used when
registering a manager, bridge, or group.  When the low level driver
registers, set the device attribute group.  The attributes are
created in device_add.

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: region: add fpga_region_class_find

2017-11-28T15:30:38+00:00

Add a function for searching the fpga-region class.  This
will be useful when device tree code is no longer in the
same file that declares the fpga-region class.  Another
step in separating common FPGA region code from device
tree support.

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: region: add register/unregister functions

2017-11-28T15:30:38+00:00

Another step in separating common code from device tree specific
code for FPGA regions.

* add FPGA region register/unregister functions.
* add the register/unregister functions to the header
* use devm_kzalloc to alloc the region.
* add a method for getting bridges to the region struct
* add priv to the region struct
* use region->info in of_fpga_region_get_bridges

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: region: add fpga-region.h header

2017-11-28T15:30:38+00:00

* Create fpga-region.h.
* Export fpga_region_program_fpga.
* Move struct fpga_region and other things to the header.

This is a step in separating FPGA region common code
from Device Tree support.

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: region: use image info as parameter for programming region

2017-11-28T15:30:37+00:00

Use FPGA image info (region->info) when region code is
programming the FPGA to pass in multiple parameters.

This is a baby step in refactoring the FPGA region code to
separate out common FPGA region code from FPGA region
Device Tree overlay support.

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman

fpga: mgr: separate getting/locking FPGA manager

2017-11-28T15:30:37+00:00

Previously when the user gets a FPGA manager, it was locked
and nobody else could use it for programming.

This commit makes it straightforward to save a reference to an
FPGA manager and only lock it when programming the FPGA.

Add functions that get an FPGA manager's mutex for exclusive use:
* fpga_mgr_lock
* fpga_mgr_unlock

The following functions no longer lock an FPGA manager's mutex:
* of_fpga_mgr_get
* fpga_mgr_get
* fpga_mgr_put

Signed-off-by: Alan Tull 
Acked-by: Moritz Fischer 
Signed-off-by: Greg Kroah-Hartman