09 Aug, 2012
1 commit
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Presently it's assumed that the irqdomain code handles the irq_desc
allocation for us, but this isn't necessarily the case when we've
pre-allocated IRQs via sparseirq. Previously we had a -EEXIST check in
the code that attempted to trap these cases and simply update them
in-place, but this behaviour was inadvertently lost in the transition to
irqdomains.This simply restores the previous behaviour, first attempting to let the
irqdomain core fetch the allocation for us, and falling back to an
in-place domain association in the extant IRQ case. Fixes up regressions
on platforms that pre-allocate legacy IRQs (specifically ARM-based
SH-Mobile platforms, as SH stopped pre-allocating vectors some time ago).Reported-by: Kuninori Morimoto
Signed-off-by: Paul Mundt
01 Aug, 2012
3 commits
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Trivial support for irq domains, using either a linear map or radix tree
depending on the vector layout.Signed-off-by: Paul Mundt
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Commit ca5481c68e9fbcea62bb3c78ae6cccf99ca8fb73 ("sh: pfc: Rudimentary
pinctrl-backed GPIO support.") introduced a regression for platforms that
were doing early GPIO API calls (from arch_initcall() or earlier),
leading to a situation where our two-stage registration logic would trip
itself up and we'd -ENODEV out of the pinctrl registration path,
resulting in endless -EPROBE_DEFER errors. Further lack of checking any
sort of errors from gpio_request() resulted in boot time warnings,
tripping on the FLAG_REQUESTED test-and-set in gpio_ensure_requested().As it turns out there's no particular need to bother with the two-stage
registration, as the platform bus is already available at the point that
we have to start caring. As such, it's easiest to simply fold these
together in to a single init path, the ordering of which is ensured
through the platform's mux registration, as usual.Reported-by: Rafael J. Wysocki
Reported-by: Kuninori Morimoto
Signed-off-by: Paul Mundt
25 Jul, 2012
1 commit
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pinctrl_remove_gpio_range() is now handled by the pinctrl core in the
unreg path for some reason, so use that instead.Signed-off-by: Paul Mundt
20 Jul, 2012
3 commits
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This implements simple support for adjusting the pin config value via the
pinctrl API. The pinconf-generic code is abandoned for now until we've
got a chance to revamp the pinmux_type state tracking that's needed by
legacy code.Signed-off-by: Paul Mundt
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While this code is still being shuffled around the KBUILD_MODNAME value
isn't particularly useful, switch to something a bit more useful.Signed-off-by: Paul Mundt
17 Jul, 2012
4 commits
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This follows the function support by simply doing 1 pin per group
encapsulation in order to keep with legacy behaviour. This will be
built on incrementally as SoCs define their own pin groups.Signed-off-by: Paul Mundt
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If we encounter invalid entries in the pinmux GPIO range, make sure we've
still got a dummy pin definition but don't otherwise map it.Signed-off-by: Paul Mundt
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symbol_request() requires the registration symbol to be exported, make
sure it is.Signed-off-by: Paul Mundt
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pinctrl support is required for correct operation, failure to locate
the init routine is fatal.Signed-off-by: Paul Mundt
11 Jul, 2012
2 commits
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Signed-off-by: Paul Mundt
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This maps out all of the function types to pinctrl function groups.
Presently this is restricted to one pin per function to maintain
compatability with legacy behaviour. This will be extended as groups
are introduced and exiting users migrated.Signed-off-by: Paul Mundt
10 Jul, 2012
2 commits
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This begins the migration of the PFC core to the pinctrl subsystem.
Initial support is very basic, with the bulk of the implementation simply
being nopped out in such a way to allow registration with the pinctrl
core to succeed.The gpio chip driver is stripped down considerably now relying purely on
pinctrl API calls to manage the bulk of its operations.This provides a basis for further PFC refactoring, including decoupling
pin functions from the GPIO API, establishing pin groups, and so forth.
These will all be dealt with incrementally so as to introduce as few
growing and migratory pains to tree-wide PFC pinmux users today.When the interfaces have been well established and in-tree users have
been migrated off of the legacy interfaces it will be possible to strip
down the core considerably, leading to eventual drivers/pinctrl rehoming.Signed-off-by: Paul Mundt
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This follows the intc/clk changes and shuffles the PFC support code under
its own directory. This will facilitate better code sharing, and allow us
to trim down the exported interface by quite a margin.Signed-off-by: Paul Mundt
21 Jun, 2012
1 commit
20 Jun, 2012
4 commits
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The encoding is tightly packed, and future changes (such as
pinconf-generic support) can easily lead to a situation where we violate
the encoding constraints and trample data bit/reg bits. This plugs in
some sanity checks by way of a BUILD_BUG_ON() to blow up if we fail to
fit.Signed-off-by: Paul Mundt
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This implements some Kconfig knobs for ensuring that the PFC gpio chip
can be disabled or built as a module in the cases where it's optional, or
forcibly enabled in cases where it's not.Signed-off-by: Paul Mundt
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This implements a bit of rework for the PFC code, making the core itself
slightly more pluggable and moving out the gpio chip handling completely.The API is preserved in such a way that platforms that depend on it for
early configuration are still able to do so, while making it possible to
migrate to alternate interfaces going forward.This is the first step of chainsawing necessary to support the pinctrl
API, with the eventual goal being able to decouple pin function state
from the gpio API while retaining gpio chip tie-in for gpio pin functions
only, relying on the pinctrl/pinmux API for non-gpio function demux.Signed-off-by: Paul Mundt
13 Jun, 2012
2 commits
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Conflicts:
drivers/sh/intc/dynamic.cSigned-off-by: Paul Mundt
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This switches to using irq_alloc_desc() directly for subgroup IRQs.
We still need to call activate_irq() on these in order to make them
requestable, at least up until these get moved in to their own irq
domain..Signed-off-by: Paul Mundt
25 May, 2012
7 commits
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This consolidates the div6/4 versions of the clk registration wrapper.
The existing wrappers with their own sh_clk_ops are maintained for API
compatability, though in the future it should be possible to be rid of
them entirely.Signed-off-by: Paul Mundt
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Everything with the exception of the _reparent ops are now shared, so
switch everything over to common types.Signed-off-by: Paul Mundt
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This introduces a new flag for clocks that need to have their divisor
ratio set back to their initial mask at disable time to prevent
interactivity problems with the clock stop bit (presently div6 only).
With this in place it's possible to handle the corner case on top of the
div4 op without any particular need for leaving things split out.Signed-off-by: Paul Mundt
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Follows the sh_clk_div_recalc() change.
Signed-off-by: Paul Mundt
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This generalizes the div4 recalc routine for use by div6 and others, then
makes it the default.Signed-off-by: Paul Mundt
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This plugs in a div_mask for the clock and sets it up for the existing
div6/4 cases. This will make it possible to support other div types, as
well as share more div6/4 infrastructure.Signed-off-by: Paul Mundt
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This plugs in a generic clk_div_table, based on the div4 version. div6 is
then adopted to use it for encapsulating its div table, which permits us
to start div6/4 unification, as well as preparation for other div types.Signed-off-by: Paul Mundt
24 May, 2012
1 commit
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Now that all of the users have been converted away, kill off the remnants
of the old API.Signed-off-by: Paul Mundt
22 May, 2012
1 commit
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At present reserving the IRLs in the IRQ bitmap in addition to the
dropping of the legacy IRQ pre-allocation prevent IRL IRQs from being
allocated for the x3proto board.The only reason to permit reservations was to lock down possible hardware
vectors prior to dynamic IRQ scanning, but this doesn't matter much given
that the hardware controller configuration is sorted before we get around
to doing any dynamic IRQ allocation anyways. Beyond that, all of the
tables are __init annotated, so quite a bit more work would need to be
done to support reconfiguring things like IRL controllers on the fly,
much more than would ever make it worth the hassle.Signed-off-by: Paul Mundt
12 Apr, 2012
1 commit
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This follows the MSTP clock change and implements variable access size
support for the rest of the CPG clocks, too. Upcoming SH-2A support has
need of this for 16-bit div4 clocks, while others will follow.Signed-off-by: Paul Mundt
11 Apr, 2012
1 commit
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The bulk of the MSTP users require 32-bit access, but this isn't the case
for some of the SH-2A parts, so add in some basic infrastructure to let
the CPU define its required access size in preparation.Requested-by: Phil Edworthy
Signed-off-by: Paul Mundt
30 Mar, 2012
2 commits
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Pull SuperH updates from Paul Mundt.
* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (25 commits)
sh: Support I/O space swapping where needed.
sh: use set_current_blocked() and block_sigmask()
sh: no need to reset handler if SA_ONESHOT
sh: intc: Fix up section mismatch for intc_ack_data
sh: select ARCH_DISCARD_MEMBLOCK.
sh: Consolidate duplicate _32/_64 unistd definitions.
sh: ecovec: switch SDHI controllers to card polling
sh: Avoid exporting unimplemented syscalls.
sh: add platform_device for RSPI in setup-sh7757
SH: pci-sh7780: enable big-endian operation.
serial: sh-sci: fix a race of DMA submit_tx on transfer
sh: dma: Collect up CHCR of SH7763, SH7764, SH7780 and SH7785
sh: dma: Collect up CHCR of SH7723 and SH7730
sh/next: Fix build fail by asm/system.h in asm/bitops.h
arch/sh/drivers/dma/{dma-g2,dmabrg}.c: ensure arguments to request_irq and free_irq are compatible
sh: cpufreq: Wire up scaling_available_freqs support.
sh: cpufreq: notify about rate rounding fallback.
sh: cpufreq: Support CPU clock frequency table.
sh: cpufreq: struct device lookup from CPU topology.
sh: cpufreq: percpu struct clk accounting.
... -
Pull more ARM updates from Russell King.
This got a fair number of conflicts with the split, but
also with some other sparse-irq and header file include cleanups. They
all looked pretty trivial, though.* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits)
ARM: fix Kconfig warning for HAVE_BPF_JIT
ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds
ARM: 7349/1: integrator: convert to sparse irqs
ARM: 7259/3: net: JIT compiler for packet filters
ARM: 7334/1: add jump label support
ARM: 7333/2: jump label: detect %c support for ARM
ARM: 7338/1: add support for early console output via semihosting
ARM: use set_current_blocked() and block_sigmask()
ARM: exec: remove redundant set_fs(USER_DS)
ARM: 7332/1: extract out code patch function from kprobes
ARM: 7331/1: extract out insn generation code from ftrace
ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format
ARM: 7351/1: ftrace: remove useless memory checks
ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path
ARM: Versatile Express: add NO_IOPORT
ARM: get rid of asm/irq.h in asm/prom.h
ARM: 7319/1: Print debug info for SIGBUS in user faults
ARM: 7318/1: gic: refactor irq_start assignment
ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop
ARM: 7315/1: perf: add support for the Cortex-A7 PMU
...
28 Mar, 2012
2 commits
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intc_ack_data is flagged as __init when it shouldn't be, causing section
mismatches in non-init paths like intc_set_ack_handle():WARNING: drivers/built-in.o(.text+0x5d760):
Section mismatch in reference from the function
intc_set_ack_handle() to the function .init.text:intc_ack_data()
The function intc_set_ack_handle()
references the function __init intc_ack_data().
This is often because intc_set_ack_handle lacks a __init
annotation or the annotation of intc_ack_data is wrong.Reported-by: Kuninori Morimoto
Signed-off-by: Paul Mundt
13 Mar, 2012
1 commit
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Convert the CPG code to use sh_clk_ops.
Signed-off-by: Magnus Damm
Signed-off-by: Rafael J. Wysocki
26 Jan, 2012
1 commit
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SH intc has a compile time dependency on NR_IRQS. Make this dependency a
local define so that shmobile (and ARM in general) can have run-time
NR_IRQS setting.Signed-off-by: Rob Herring
