clk_get() used to return NULL or an errno value depending on whether a
clkdev lookup failed or a clock wasn't found in the primary clock list.
As these disjoint paths were unified and everything now is handled via
clkdev lookups, the NULL case never makes it out of clk_get(). Update
accordingly and always look to the errno value.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
CC arch/sh/boards/mach-sdk7786/setup.o
arch/sh/boards/mach-sdk7786/setup.c:179: error: variable 'sdk7786_pcie_cl' has initializer but incomplete type
arch/sh/boards/mach-sdk7786/setup.c:180: error: unknown field 'con_id' specified in initializer
arch/sh/boards/mach-sdk7786/setup.c:180: warning: excess elements in struct initializer
arch/sh/boards/mach-sdk7786/setup.c:180: warning: (near initialization for 'sdk7786_pcie_cl')
arch/sh/boards/mach-sdk7786/setup.c:181: error: unknown field 'clk' specified in initializer
arch/sh/boards/mach-sdk7786/setup.c:181: warning: excess elements in struct initializer
arch/sh/boards/mach-sdk7786/setup.c:181: warning: (near initialization for 'sdk7786_pcie_cl')
arch/sh/boards/mach-sdk7786/setup.c: In function 'sdk7786_clk_init':
arch/sh/boards/mach-sdk7786/setup.c:211: error: implicit declaration of function 'clkdev_add'
which is a fanciful way of saying that the struct definition moved from
asm/clkdev.h to linux/clkdev.h.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The on-board NMI switch is routed through and mangled by the FPGA prior
to its delivery to the NMI pin, so add some glue for the various
configuration options. The default is to unmask it and enable all input
sources.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The SDK7786 FPGA has secondary control over the PCIe clocks, specifically
relating to the slots and oscillator. This ties the FPGA clocks in to the
clock framework and balances the refcounting similar to how the primary
on-chip clocks are managed. While the on-chip clocks are per-port, the
FPGA clock enable/disable is global for the entire block.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The sdk7786 FPGA supports a number of user settable input switches that
are otherwise unused. This wires up a dummy gpio chip for the switch bank
to simply expose them to userspace.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This cribs the MIPS plat_smp_ops approach for wrapping up the platform
ops. This will allow for mixing and matching different ops on the same
platform in the future.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This implements dynamic probing for the system FPGA. The system reset
controller contains a fixed magic read word in order to identify the
FPGA. This just utilizes a simple loop that scans across all of the fixed
physical areas (area 0 through area 6) to locate the FPGA.
The FPGA also contains register information detailing the area mappings
and chip select settings for all of the other blocks, so this needs to be
done before we can set up anything else.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This moves out the FPGA IRQ controller setup code to its own file, in
preparation for switching off of IRL mode and having it provide its own
irq_chip.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This does a bit of refactoring of the FPGA management code. The primary
FPGA initialization is moved out to its own file in preparation for
implementing some of the more complex capabilities, a complete set of
register definitions is provided, and all of the existing users in the
board code are moved over to use the new interface instead of setting up
overlapping mappings. This also corrects the FPGA size, which previously
was chomped off at the SDIF control register.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This uses the mode pins exposed through the FPGA to work out whether
we're driven from EXTAL or not and does the appropriate setup and
propagation through the clock framework.
This will also -EINVAL out for anyone adding in their own oscillators,
forcing proper configuration with the clock framework instead of
proceeding on with bogus clock values.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This wires up the mode pins support on the SDK7786. The pins are
standard SH7786 pins, and all are fixed in software. Needed for the
clock framework, PCIe, and so forth.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This stubs in some preliminary board support for the RTE SDK7786.
This is quite stunted at the moment, and primarily builds on top of the
system FPGA. FPGA IRQs are handled via CPU IRL masking for simplicity,
with initial peripheral support restricted to the debug ethernet.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Magnus Damm