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2012-06-20sh: pfc: Make gpio chip support optional where possible.Paul Mundt2-1/+17
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 <lethal@linux-sh.org>
2012-06-20sh: pfc: Split out gpio chip support.Paul Mundt3-272/+415
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 <lethal@linux-sh.org>
2012-06-20Merge branch 'sh/clkfwk' into sh-latestPaul Mundt1-191/+142
2012-06-13Merge branch 'sh/dynamic-irq-cleanup' into sh-latestPaul Mundt3-59/+4
Conflicts: drivers/sh/intc/dynamic.c Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-06-13sh: intc: Allocate subgroup virq backing desc directly.Paul Mundt1-1/+3
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 <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Consolidate div clk registration helper.Paul Mundt1-107/+75
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 <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Consolidate div6/div4 clk_ops definitions.Paul Mundt1-25/+17
Everything with the exception of the _reparent ops are now shared, so switch everything over to common types. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Use shared sh_clk_div_enable/disable().Paul Mundt1-43/+34
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 <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Use shared sh_clk_div_set_rate()Paul Mundt1-42/+28
Follows the sh_clk_div_recalc() change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Use shared sh_clk_div_recalc().Paul Mundt1-36/+26
This generalizes the div4 recalc routine for use by div6 and others, then makes it the default. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Introduce a div_mask for variable div types.Paul Mundt1-5/+5
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 <lethal@linux-sh.org>
2012-05-25sh: clkfwk: Move to common clk_div_table accessors for div4/div6.Paul Mundt1-11/+35
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 <lethal@linux-sh.org>
2012-05-24sh: intc: Kill off deprecated dynamic IRQ API.Paul Mundt2-66/+1
Now that all of the users have been converted away, kill off the remnants of the old API. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-05-22sh: intc: Kill off special reservation interface.Paul Mundt1-8/+0
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 <lethal@linux-sh.org>
2012-04-12sh: clkfwk: Support variable size accesses for div4/div6 clocks.Paul Mundt1-34/+37
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 <lethal@linux-sh.org>
2012-04-11sh: clkfwk: Support variable size accesses for MSTP clocks.Paul Mundt1-11/+27
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 <phil.edworthy@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-30Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-shLinus Torvalds4-35/+27
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. ...
2012-03-29Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds4-4/+4
Pull more ARM updates from Russell King. This got a fair number of conflicts with the <asm/system.h> 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 ...
2012-03-29sh: intc: Fix up section mismatch for intc_ack_dataPaul Mundt1-3/+2
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 <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28Merge branch 'common/intc-extension' into sh-latestPaul Mundt3-32/+25
2012-03-12sh: convert cpg code to sh_clk_opsMagnus Damm1-8/+8
Convert the CPG code to use sh_clk_ops. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-01-25sh: intc: remove dependency on NR_IRQSRob Herring4-4/+4
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 <rob.herring@calxeda.com>
2012-01-24sh: intc: optimize intc IRQ lookupPaul Mundt3-22/+22
This ensures that the sense/prio lists are sorted at registration time, enabling us to use a simple binary search for an optimized lookup (something that had been on the TODO for some time). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-24sh: intc: Use IRQ_SET_MASK_OK_NOCOPY for intc_set_affinity.Paul Mundt1-1/+1
intc_set_affinity() updates the cpumask in place, so there's no need for the upper layer to do this itself. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-24sh: intc: Kill off superfluous irq_shutdown hooking.Paul Mundt1-1/+0
This already gets handled via disable, as per the notes in linux/irq.h. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-24sh: intc: Prefer IRQCHIP_SKIP_SET_WAKE over a dummy set_wake callback.Paul Mundt1-6/+1
It's possible to use IRQCHIP_SKIP_SET_WAKE to get the behaviour that we're after, without having to bother with a dummy ->set_wake() callback for the IRQ chip. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-24sh: intc: Make global intc controller counter static.Paul Mundt2-2/+1
No need to expose this globally since it's only used for core accounting. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-24sh: clkfwk: bugfix: use clk_reparent() for div6 clocksKuninori Morimoto1-1/+1
Various problems will happen if clk parent was set up directly. it should use clk_reparent() Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-11Merge tag 'rmobile-for-linus' of git://github.com/pmundt/linux-shLinus Torvalds1-82/+94
SH/R-Mobile updates for 3.3 merge window. * tag 'rmobile-for-linus' of git://github.com/pmundt/linux-sh: (32 commits) arm: mach-shmobile: add a resource name for shdma ARM: mach-shmobile: r8a7779 SMP support V3 ARM: mach-shmobile: Add kota2 defconfig. ARM: mach-shmobile: Add marzen defconfig. ARM: mach-shmobile: r8a7779 power domain support V2 ARM: mach-shmobile: Fix up marzen build for recent GIC changes. ARM: mach-shmobile: r8a7779 PFC function support ARM: mach-shmobile: Flush caches in platform_cpu_die() ARM: mach-shmobile: Allow SoC specific CPU kill code ARM: mach-shmobile: Fix headsmp.S code to use CPUINIT ARM: mach-shmobile: clock-r8a7779: clkz/clkzs support ARM: mach-shmobile: clock-r8a7779: add DIV4 clock support ARM: mach-shmobile: Marzen LAN89218 support ARM: mach-shmobile: Marzen SCIF2/SCIF4 support ARM: mach-shmobile: r8a7779 PFC GPIO-only support V2 ARM: mach-shmobile: r8a7779 and Marzen base support V2 sh: pfc: Unlock register support sh: pfc: Variable bitfield width config register support sh: pfc: Add config_reg_helper() function sh: pfc: Convert index to field and value pair ...
2012-01-12Merge branch 'sh/pm-runtime' into sh-latestPaul Mundt1-8/+1
Conflicts: arch/sh/kernel/cpu/sh4a/clock-sh7723.c Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-12sh: also without PM_RUNTIME pm_runtime.o must be builtGuennadi Liakhovetski1-1/+1
When CONFIG_PM_RUNTIME is off, drivers/sh/pm_runtime.o still has to be built on sh platforms, because then it provides means to statically switch on device PM clocks. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-10Merge branch 'common/clkfwk' into sh-latestPaul Mundt1-2/+2
2012-01-10sh: clkfwk: sh_clk_init_parent() should be called after clk_register()Kuninori Morimoto1-2/+2
sh_clk_init_parent() are using clk->mapped_reg which is mapped in clk_register() Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09Merge branch 'master' of ↵Paul Mundt3-25/+35
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into sh-latest Conflicts: arch/arm/mach-shmobile/clock-sh73a0.c Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09Merge branches 'common/pfc' and 'common/clkfwk' into rmobile/marzenPaul Mundt3-109/+250
Conflicts: arch/arm/mach-shmobile/clock-sh73a0.c Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09sh: pfc: Unlock register supportMagnus Damm1-12/+10
Add PFC support for a 32-bit unlock register. Needed to drive the r8a7779 PFC that comes with a funky PMMR register. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09sh: pfc: Variable bitfield width config register supportMagnus Damm1-11/+33
Add support for variable config reg hardware by adding the macro PINMUX_CFG_REG_VAR(). The width of each bitfield needs to be passed to the macro, and the correct space must be consumed by each bitfield in the enum table following the macro. Data registers still need to have fixed bitfields. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09sh: pfc: Add config_reg_helper() functionMagnus Damm1-44/+32
Add a helper function for shared config reg access calculations. This allows us to reduce the amount of duplicated code, and at the same time prepare for a common place for future variable bitwidth config reg support. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09sh: pfc: Convert index to field and value pairMagnus Damm1-27/+18
Update the way the PFC code is passing bitfield selection between configure register functions. Convert the code from using index only to bitfield number and selected value. First step towards future variable bitfield width support. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09sh: pfc: Add gpio_read_bit() for data register accessMagnus Damm1-1/+14
Introduce gpio_read_bit() for data register read access and modify sh_gpio_get_value() to make use of the new function instead of gpio_read_reg(). The purpose of this change is to update the code to only use the gpio_read_reg() function for config register access. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-08Merge branch 'pm-for-linus' of ↵Linus Torvalds2-0/+9
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm * 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits) PM / Hibernate: Implement compat_ioctl for /dev/snapshot PM / Freezer: fix return value of freezable_schedule_timeout_killable() PM / shmobile: Allow the A4R domain to be turned off at run time PM / input / touchscreen: Make st1232 use device PM QoS constraints PM / QoS: Introduce dev_pm_qos_add_ancestor_request() PM / shmobile: Remove the stay_on flag from SH7372's PM domains PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode PM: Drop generic_subsys_pm_ops PM / Sleep: Remove forward-only callbacks from AMBA bus type PM / Sleep: Remove forward-only callbacks from platform bus type PM: Run the driver callback directly if the subsystem one is not there PM / Sleep: Make pm_op() and pm_noirq_op() return callback pointers PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412. PM / Sleep: Merge internal functions in generic_ops.c PM / Sleep: Simplify generic system suspend callbacks PM / Hibernate: Remove deprecated hibernation snapshot ioctls PM / Sleep: Fix freezer failures due to racy usermodehelper_is_disabled() ARM: S3C64XX: Implement basic power domain support PM / shmobile: Use common always on power domain governor ... Fix up trivial conflict in fs/xfs/xfs_buf.c due to removal of unused XBT_FORCE_SLEEP bit
2012-01-06Merge branch 'driver-core-next' into Linux 3.2Greg Kroah-Hartman3-25/+26
This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file, and it fixes the build error in the arch/x86/kernel/microcode_core.c file, that the merge did not catch. The microcode_core.c patch was provided by Stephen Rothwell <sfr@canb.auug.org.au> who was invaluable in the merge issues involved with the large sysdev removal process in the driver-core tree. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-25PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resumeRafael J. Wysocki2-0/+9
Since the SH7372's INTCS in included into syscore suspend/resume, which causes the chip to be accessed when PM domains have been turned off during system suspend, the A4R domain containing the INTCS has to stay on during system sleep, which is suboptimal from the power consumption point of view. For this reason, add a new INTC flag, skip_syscore_suspend, to mark the INTCS for intc_suspend() and intc_resume(), so that they don't touch it. This allows the A4R domain to be turned off during system suspend and the INTCS state is resrored during system resume by the A4R's "power on" code. Suggested-by: Magnus Damm <damm@opensource.se> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Magnus Damm <damm@opensource.se>
2011-12-21sh: intc - convert sysdev_class to a regular subsystemKay Sievers3-25/+26
After all sysdev classes are ported to regular driver core entities, the sysdev implementation will be entirely removed from the kernel. Cc: Paul Mundt <lethal@linux-sh.org> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-09Merge branches 'common/clkfwk', 'common/pfc' and 'common/serial-rework' into ↵Paul Mundt3-47/+176
sh-latest
2011-12-09sh: pfc: ioremap() supportMagnus Damm1-24/+113
Add support for non-entity mapped PFC registers through the use of struct resource and ioremap()/iounmap(). The PFC main data structure gets updated with a pointer to a struct resources array that point out all register windows used by the PFC instance. The register definitions are kept as physical addresses but the PFC code will do transparent conversion into virtual addresses whenever register windows are specified using with struct resource. To introduce as little performance penalty as possible the virtual address of each data register is cached in memory. The virtual address of each configuration register is however calculated during run time. This because the configuration is considered slow path so focus is instead put on keeping memory foot print as small as possible. The PFC register access code is in this patch updated from __raw_readN() / __raw_writeN() into ioreadN() / iowriteN(). This patch is needed to support the PFC block in r8a7779. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09sh: use ioread32/iowrite32 and mapped_reg for div6Magnus Damm1-10/+10
Convert the CPG DIV6 helper code to use the new mapped_reg together with ioread32() and iowrite32(). Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09sh: use ioread32/iowrite32 and mapped_reg for div4Magnus Damm1-8/+8
Convert the CPG DIV4 helper code to use the new mapped_reg together with ioread32() and iowrite32(). Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09sh: use ioread32/iowrite32 and mapped_reg for mstp32Magnus Damm1-4/+4
Convert the CPG MSTP32 helper code to use the new mapped_reg together with ioread32() and iowrite32(). Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09sh: extend clock struct with mapped_reg memberMagnus Damm1-2/+7
Add a "mapped_reg" member to struct clk and use that to keep the ioremapped register based on enable_reg. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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