linux-toradex.git/drivers/fpga, branch v4.14-rc3

fpga: altera-hps2fpga: fix multiple init of l3_remap_lock

2017-08-10T21:27:55+00:00

The global spinlock `l3_remap_lock` is reinitialized every time the
"probe" function `alt_fpga_bridge_probe()` is called.  It should only be
initialized once.  Use `DEFINE_SPINLOCK()` to initialize it statically.

Fixes: e5f8efa5c8bf ("ARM: socfpga: fpga bridge driver support")
Cc:  # 4.10+
Signed-off-by: Ian Abbott 
Reviewed-By: Moritz Fischer 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

fpga: altera-hps2fpga: add NULL check on of_match_device() return value

2017-08-10T21:27:55+00:00

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV

Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Moritz Fischer 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

ARM: socfpga: explicitly request exclusive reset control

2017-08-10T21:27:55+00:00

Commit a53e35db70d1 ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.

No functional changes.

Cc: Alan Tull 
Cc: Moritz Fischer 
Cc: linux-fpga@vger.kernel.org
Signed-off-by: Philipp Zabel 
Acked-By: Moritz Fischer 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

fpga: Convert to using %pOF instead of full_name

2017-08-10T21:27:55+00:00

Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.

Signed-off-by: Rob Herring 
Cc: Alan Tull 
Cc: Moritz Fischer 
Cc: linux-fpga@vger.kernel.org
Acked-by: Moritz Fischer 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

fpga manager: Add Altera CvP driver

2017-07-17T15:26:15+00:00

Add FPGA manager driver for loading Arria-V/Cyclone-V/Stratix-V
and Arria-10 FPGAs via CvP.

Signed-off-by: Anatolij Gustschin 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

fpga-manager: altera-ps-spi: use bitrev8x4

2017-07-17T15:26:14+00:00

Speed up bit reversal by using hardware bit reversal
Add extra code to handle less than 4byte remnants, if any

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

fpga manager: Add altera-ps-spi driver for Altera FPGAs

2017-07-17T15:26:14+00:00

altera-ps-spi loads FPGA firmware over SPI, using the "passive serial"
interface on Altera Arria 10, Cyclone V or Stratix V FPGAs.

This is one of the simpler ways to set up an FPGA at runtime.
The signal interface is close to unidirectional SPI with lsb first.

Signed-off-by: Joshua Clayton 
Signed-off-by: Anatolij Gustschin 
Signed-off-by: Alan Tull 
Signed-off-by: Greg Kroah-Hartman

Make FPGA a menuconfig to ease disabling it all

2017-07-17T15:26:14+00:00

No need to get into the submenu to disable all FPGA-related config entries

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

fpga fr br: update supported version numbers

2017-04-26T09:38:56+00:00

The value in the version register of the altera freeze bridge
controller changed from the beta value of 2 to the
value of 0xad000003 in the official release of the IP.
This patch supports the old and new version numbers, and the
driver's probe function will fail if neither of the supported
versions is found.

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

fpga: region: release FPGA region reference in error path

2017-04-26T09:38:56+00:00

If fpga_region_get_manager() fails in fpga_region_program_fpga(), a
reference to the fpga_manager instance previously acquired through
fpga_region_get() is retained. Make sure to properly release it in the
error case by using a separate jump label which will call
fpga_region_put() in before returning.

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