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2018-10-16fpga: bridge: add devm_fpga_bridge_createAlan Tull1-9/+59
Add devm_fpga_bridge_create() which is the managed version of fpga_bridge_create(). Change current bridge drivers to use devm_fpga_bridge_create(). Signed-off-by: Alan Tull <[email protected]> Suggested-by: Federico Vaga <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-09-30fpga: bridge: fix obvious function documentation errorAlan Tull1-1/+1
fpga_bridge_dev_match() returns a FPGA bridge struct, not a FPGA manager struct so s/manager/bridge/. Signed-off-by: Alan Tull <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-05-25fpga: clarify that unregister functions also freeAlan Tull1-1/+1
The following functions also free the struct. Add that fact to the function documentation. - fpga_mgr_free - fpga_bridge_free - fpga_region_free Signed-off-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-05-25fpga: bridge: kernel-doc fixesAlan Tull1-0/+1
Fix the following warnings when documentation is built: ./drivers/fpga/fpga-bridge.c:143: warning: Function parameter or member 'info' not described in 'fpga_bridge_get' ./drivers/fpga/fpga-bridge.c:1: warning: no structured comments found Signed-off-by: Alan Tull <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-05-25fpga: use SPDXAlan Tull1-12/+1
Replace GPLv2 boilerplate with SPDX in FPGA code that came from me or from Altera. Signed-off-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-05-25fpga: bridge: change api, don't use drvdataAlan Tull1-24/+46
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 <[email protected]> Reported-by: Jiuyue Ma <[email protected]> Signed-off-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-11-28fpga: fpga-bridge: remove unnecessary null check in of_fpga_bridge_getGustavo A. R. Silva1-2/+0
Notice that bridge = to_fpga_bridge(dev); expands to: bridge = container_of(dev, struct fpga_bridge, dev); and container_of is never null, so this null check is unnecessary. Addresses-Coverity-ID: 1397912 Reported-by: Alan Tull <[email protected]> Signed-off-by: Gustavo A. R. Silva <[email protected]> Reviewed-by: Moritz Fischer <[email protected]> Signed-off-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-11-28fpga: add attribute groupsAlan Tull1-0/+1
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 <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-11-28fpga: bridge: support getting bridge from deviceAlan Tull1-23/+87
Add two functions for getting the FPGA bridge from the device rather than device tree node. This is to enable writing code that will support using FPGA bridges without device tree. Rename one old function to make it clear that it is device tree-ish. This leaves us with 3 functions for getting a bridge: * fpga_bridge_get Get the bridge given the device. * fpga_bridges_get_to_list Given the device, get the bridge and add it to a list. * of_fpga_bridges_get_to_list Renamed from priviously existing fpga_bridges_get_to_list. Given the device node, get the bridge and add it to a list. Signed-off-by: Alan Tull <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-03-17fpga: bridge: Replace open-coded list_for_each + list_entryMoritz Fischer1-11/+4
Replaces open-coded list_for_each() + list_entry() with macro list_for_each_entry() Signed-off-by: Moritz Fischer <[email protected]> Cc: [email protected] Cc: [email protected] Acked-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-03-17fpga: fix sparse warnings in fpga-mgr and fpga-bridgeDinh Nguyen1-1/+1
Fix up these sparse warnings: drivers/fpga/fpga-mgr.c:189:21: warning: symbol '__fpga_mgr_get' was not declared. Should it be static? drivers/fpga/fpga-bridge.c:30:12: warning: symbol 'bridge_list_lock' was not declared. Should it be static? Signed-off-by: Dinh Nguyen <[email protected]> Acked-by: Moritz Fischer <[email protected]> Signed-off-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2016-11-10fpga: add fpga bridge frameworkAlan Tull1-0/+395
This framework adds API functions for enabling/ disabling FPGA bridges under kernel control. This allows the Linux kernel to disable FPGA bridges during FPGA reprogramming and to enable FPGA bridges when FPGA reprogramming is done. This framework is be manufacturer-agnostic, allowing it to be used in interfaces that use the FPGA Manager Framework to reprogram FPGA's. The functions are: * of_fpga_bridge_get * fpga_bridge_put Get/put an exclusive reference to a FPGA bridge. * fpga_bridge_enable * fpga_bridge_disable Enable/Disable traffic through a bridge. * fpga_bridge_register * fpga_bridge_unregister Register/unregister a device-specific low level FPGA Bridge driver. Get an exclusive reference to a bridge and add it to a list: * fpga_bridge_get_to_list To enable/disable/put a set of bridges that are on a list: * fpga_bridges_enable * fpga_bridges_disable * fpga_bridges_put Signed-off-by: Alan Tull <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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