linux.git/drivers/fpga, branch v5.12.5

fpga: fpga-mgr: xilinx-spi: fix error messages on -EPROBE_DEFER

2021-05-14T08:52:14+00:00

[ Upstream commit 484a58607a808c3721917f5ca5fba7eff809e4df ]

The current code produces an error message on devm_gpiod_get() errors even
when the error is -EPROBE_DEFER, which should be silent.

This has been observed producing a significant amount of messages like:

    xlnx-slave-spi spi1.1: Failed to get PROGRAM_B gpio: -517

Fix and simplify code by using the dev_err_probe() helper function.

Signed-off-by: Luca Ceresoli 
Fixes: dd2784c01d93 ("fpga manager: xilinx-spi: check INIT_B pin during write_init")
Fixes: 061c97d13f1a ("fpga manager: Add Xilinx slave serial SPI driver")
Signed-off-by: Moritz Fischer 
Signed-off-by: Sasha Levin

fpga: dfl: pci: add DID for D5005 PAC cards

2021-05-12T06:39:36+00:00

[ Upstream commit a78a51a851ed3edc83264a67e2ba77a34f27965f ]

This patch adds the approved PCI Express Device IDs for the
PF and VF for the card for D5005 PAC cards.

Signed-off-by: Russ Weight 
Signed-off-by: Matthew Gerlach 
Signed-off-by: Moritz Fischer 
Signed-off-by: Sasha Levin

Merge tag 'fpga-cleanup-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga into char-misc-next

2021-01-12T09:19:14+00:00

Moritz writes:

First set of FPGA Manager changes for 5.12-rc1

This is the first set of changes for the FPGA Manager 5.12-rc1
mergewindow.

DFL:
- Minor cleanup, constifying a static attribute group

Core:
- Minor cleanup, using DEFINE_SPINLOCK over open coding it

All patches have been reviewed on the mailing list, and have been in the
last linux-next releases (as part of my for-next branch) without issues.

Signed-off-by: Moritz Fischer 

* tag 'fpga-cleanup-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga:
  fpga: dfl: fme: Constify static attribute_group structs
  fpga: Use DEFINE_SPINLOCK() for spinlock

fpga: dfl: fme: Constify static attribute_group structs

2021-01-10T18:57:14+00:00

The only usage of these is to put their addresses in arrays of pointers
to const attribute_groups. Make them const to allow the compiler to put
them in read-only memory.

Signed-off-by: Rikard Falkeborn 
Reviewed-by: Tom Rix 
Signed-off-by: Moritz Fischer

fpga: Use DEFINE_SPINLOCK() for spinlock

2021-01-10T18:57:13+00:00

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Signed-off-by: Zheng Yongjun 
Reviewed-by: Tom Rix 
Signed-off-by: Moritz Fischer

fpga: dfl: add support for N3000 Nios private feature

2021-01-07T14:21:27+00:00

This patch adds support for the Nios handshake private feature on Intel
PAC (Programmable Acceleration Card) N3000.

The Nios is the embedded processor on the FPGA card. This private feature
provides a handshake interface to FPGA Nios firmware, which receives
retimer configuration command from host and executes via an internal SPI
master (spi-altera). When Nios finishes the configuration, host takes over
the ownership of the SPI master to control an Intel MAX10 BMC (Board
Management Controller) Chip on the SPI bus.

For Nios firmware handshake part, this driver requests the retimer
configuration for Nios firmware on probe, and adds some sysfs nodes for
user to query the onboard retimer's working mode and Nios firmware
version.

For SPI part, this driver adds a spi-altera platform device as well as
the MAX10 BMC spi slave info. A spi-altera driver will be matched to
handle the following SPI work.

[mdf@kernel.org: Fixed up ABI doc kernel release]

Reviewed-by: Tom Rix 
Signed-off-by: Xu Yilun 
Signed-off-by: Wu Hao 
Signed-off-by: Matthew Gerlach 
Signed-off-by: Russ Weight 
Signed-off-by: YueHaibing 
Link: https://lore.kernel.org/r/20210107043714.991646-8-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: move dfl bus related APIs to include/linux/dfl.h

2021-01-07T14:21:27+00:00

Now the dfl drivers could be made as independent modules and put in
different folders according to their functionalities. In order for
scattered dfl device drivers to include dfl bus APIs, move the
dfl bus APIs to a new header file in the public folder.

[mdf@kernel.org: Fixed up header guards to match filename]

Reviewed-by: Tom Rix 
Acked-by: Wu Hao 
Signed-off-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-7-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: move dfl_device_id to mod_devicetable.h

2021-01-07T14:21:27+00:00

In order to support MODULE_DEVICE_TABLE() for dfl device driver, this
patch moves struct dfl_device_id to mod_devicetable.h

Some brief description for DFL (Device Feature List) is added to make
the DFL known to the whole kernel.

Reviewed-by: Tom Rix 
Acked-by: Wu Hao 
Signed-off-by: Xu Yilun 
Signed-off-by: Wu Hao 
Signed-off-by: Matthew Gerlach 
Signed-off-by: Russ Weight 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-5-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: fix the definitions of type & feature_id for dfl devices

2021-01-07T14:21:27+00:00

The value of the field dfl_device.type comes from the 12 bits register
field DFH_ID according to DFL spec. So this patch changes the definition
of the type field to u16.

Also it is not necessary to illustrate the valid bits of the type field
in comments. Instead we should explicitly define the possible values in
the enumeration type for it, because they are shared by hardware spec.
We should not let the compiler decide these values.

Similar changes are also applied to dfl_device.feature_id.

This patch also fixed the MODALIAS format according to the changes
above.

Reviewed-by: Tom Rix 
Signed-off-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-4-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga: dfl-pci: locate DFLs by PCIe vendor specific capability

2021-01-07T14:21:27+00:00

A PCIe vendor specific extended capability is introduced by Intel to
specify the start of a number of DFLs.

Signed-off-by: Matthew Gerlach 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-3-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman