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2018-03-16arch: remove blackfin portArnd Bergmann1-1366/+0
The Analog Devices Blackfin port was added in 2007 and was rather active for a while, but all work on it has come to a standstill over time, as Analog have changed their product line-up. Aaron Wu confirmed that the architecture port is no longer relevant, and multiple people suggested removing blackfin independently because of some of its oddities like a non-working SMP port, and the amount of duplication between the chip variants, which cause extra work when doing cross-architecture changes. Link: https://docs.blackfin.uclinux.org/ Acked-by: Aaron Wu <Aaron.Wu@analog.com> Acked-by: Bryan Wu <cooloney@gmail.com> Cc: Steven Miao <realmz6@gmail.com> Cc: Mike Frysinger <vapier@chromium.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-10-19blackfin: Fix local <asm/gpio.h> includesLinus Walleij1-1/+1
When making the pin control submenu globally visible, all kinds of oddities appear, in blackfin a few files were #including <linux/gpio.h> and relying on that to pull in <asm/gpio.h>. This was not working when pin control but not GPIOLIB was selected resulting in a breakage in allmodconfig. The code these files were using was still there and defined in <asm/gpio.h> just not pulle in from just including <linux/gpio.h> Simply add the required includes explicitly in the blackfin kernel core and everything compiles fine. Delete the use of the incorrect <linux/gpio.h> where possible. Add stubs to <asm/gpio.h> for the functions called from PM: these should probably also depend on !PINCTRL but since the global CONFIG_PM symbol is used to compile PM support, we need some more intrusive thing here, to be tested by Blackfin maintainers. Cc: Steven Miao <realmz6@gmail.com> Cc: Huanhuan Feng <huanhuan.feng@analog.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-02sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar1-0/+1
<linux/sched/debug.h> We are going to split <linux/sched/debug.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/debug.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-16gpio: Include linux/gpio.h instead of asm/gpio.hBjorn Helgaas1-1/+1
Most arches have an asm/gpio.h that merely includes linux/gpio.h. The others select ARCH_HAVE_CUSTOM_GPIO_H, and when that's selected, linux/gpio.h includes asm/gpio.h. Therefore, code should include linux/gpio.h instead of including asm/gpio.h directly. Remove includes of asm/gpio.h, adding an include of linux/gpio.h when necessary. This is a follow-on to 7563bbf89d06 ("gpiolib/arches: Centralise bolierplate asm/gpio.h"). Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner1-3/+2
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-07-31blackfin: Prepare irq handlers for irq argument removalThomas Gleixner1-2/+2
The irq argument of most interrupt flow handlers is unused or merily used instead of a local variable. The handlers which need the irq argument can retrieve the irq number from the irq descriptor. Search and update was done with coccinelle and the invaluable help of Julia Lawall. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net
2015-07-27blackfin/irq: Use irq_set_handler_locked()Thomas Gleixner1-4/+4
Use irq_set_handler_locked() as it avoids a redundant lookup of the irq descriptor. Search and update was done with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Steven Miao <realmz6@gmail.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: adi-buildroot-devel@lists.sourceforge.net Link: http://lkml.kernel.org/r/20150713125611.731615902@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-27blackfin/irq: Use access helper irq_data_get_affinity_mask()Jiang Liu1-1/+2
This is a preparatory patch for moving irq_data struct members. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net Link: http://lkml.kernel.org/r/20150713125611.652550580@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-01-20blackfin: mach-common: ints-priority: remove unused functionRickard Strandqvist1-8/+0
Remove the function bfin_sec_resume() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-10-15Merge branch 'for-3.18-consistent-ops' of ↵Linus Torvalds1-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu Pull percpu consistent-ops changes from Tejun Heo: "Way back, before the current percpu allocator was implemented, static and dynamic percpu memory areas were allocated and handled separately and had their own accessors. The distinction has been gone for many years now; however, the now duplicate two sets of accessors remained with the pointer based ones - this_cpu_*() - evolving various other operations over time. During the process, we also accumulated other inconsistent operations. This pull request contains Christoph's patches to clean up the duplicate accessor situation. __get_cpu_var() uses are replaced with with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr(). Unfortunately, the former sometimes is tricky thanks to C being a bit messy with the distinction between lvalues and pointers, which led to a rather ugly solution for cpumask_var_t involving the introduction of this_cpu_cpumask_var_ptr(). This converts most of the uses but not all. Christoph will follow up with the remaining conversions in this merge window and hopefully remove the obsolete accessors" * 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits) irqchip: Properly fetch the per cpu offset percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write. percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t Revert "powerpc: Replace __get_cpu_var uses" percpu: Remove __this_cpu_ptr clocksource: Replace __this_cpu_ptr with raw_cpu_ptr sparc: Replace __get_cpu_var uses avr32: Replace __get_cpu_var with __this_cpu_write blackfin: Replace __get_cpu_var uses tile: Use this_cpu_ptr() for hardware counters tile: Replace __get_cpu_var uses powerpc: Replace __get_cpu_var uses alpha: Replace __get_cpu_var ia64: Replace __get_cpu_var uses s390: cio driver &__get_cpu_var replacements s390: Replace __get_cpu_var uses mips: Replace __get_cpu_var uses MIPS: Replace __get_cpu_var uses in FPU emulator. arm: Replace __this_cpu_ptr with raw_cpu_ptr ...
2014-08-26blackfin: Replace __get_cpu_var usesChristoph Lameter1-4/+4
__get_cpu_var() is used for multiple purposes in the kernel source. One of them is address calculation via the form &__get_cpu_var(x). This calculates the address for the instance of the percpu variable of the current processor based on an offset. Other use cases are for storing and retrieving data from the current processors percpu area. __get_cpu_var() can be used as an lvalue when writing data or on the right side of an assignment. __get_cpu_var() is defined as : #define __get_cpu_var(var) (*this_cpu_ptr(&(var))) __get_cpu_var() always only does an address determination. However, store and retrieve operations could use a segment prefix (or global register on other platforms) to avoid the address calculation. this_cpu_write() and this_cpu_read() can directly take an offset into a percpu area and use optimized assembly code to read and write per cpu variables. This patch converts __get_cpu_var into either an explicit address calculation using this_cpu_ptr() or into a use of this_cpu operations that use the offset. Thereby address calculations are avoided and less registers are used when code is generated. At the end of the patch set all uses of __get_cpu_var have been removed so the macro is removed too. The patch set includes passes over all arches as well. Once these operations are used throughout then specialized macros can be defined in non -x86 arches as well in order to optimize per cpu access by f.e. using a global register that may be set to the per cpu base. Transformations done to __get_cpu_var() 1. Determine the address of the percpu instance of the current processor. DEFINE_PER_CPU(int, y); int *x = &__get_cpu_var(y); Converts to int *x = this_cpu_ptr(&y); 2. Same as #1 but this time an array structure is involved. DEFINE_PER_CPU(int, y[20]); int *x = __get_cpu_var(y); Converts to int *x = this_cpu_ptr(y); 3. Retrieve the content of the current processors instance of a per cpu variable. DEFINE_PER_CPU(int, y); int x = __get_cpu_var(y) Converts to int x = __this_cpu_read(y); 4. Retrieve the content of a percpu struct DEFINE_PER_CPU(struct mystruct, y); struct mystruct x = __get_cpu_var(y); Converts to memcpy(&x, this_cpu_ptr(&y), sizeof(x)); 5. Assignment to a per cpu variable DEFINE_PER_CPU(int, y) __get_cpu_var(y) = x; Converts to __this_cpu_write(y, x); 6. Increment/Decrement etc of a per cpu variable DEFINE_PER_CPU(int, y); __get_cpu_var(y)++ Converts to __this_cpu_inc(y) CC: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-08-26treewide: Fix typo in printkMasanari Iida1-1/+1
This patch fix spelling typo in printk within vairous part of the code. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-07-26irq: blackfin sec: drop duplicated sec priority setSteven Miao1-2/+0
Signed-off-by: Steven Miao <realmz6@gmail.com>
2014-01-29blackfin: Support L1 SRAM parity checking feature on bf60xSonic Zhang1-21/+20
Move code for the SEC faults from the IRQ hanlders into IRQ actions. refine bfin fault routine handle Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Steven Miao <realmz6@gmail.com>
2013-11-15blackfin: adi gpio driver and pinctrl driver supportSonic Zhang1-392/+29
Remove gpio driver for new gpio controller on BF54x and BF60x. Build the bfin_gpio driver only when other BF5xx processors are selected. Replace the prefix of some gpio and peripheral functions with adi. add portmux platform data in machine portmux.h Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Steven Miao <realmz6@gmail.com>
2013-07-14blackfin: delete __cpuinit usage from all blackfin filesPaul Gortmaker1-1/+1
The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/blackfin uses of the __cpuinit macros from all C files. Currently blackfin does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Mike Frysinger <vapier@gentoo.org> Cc: Bob Liu <lliubbo@gmail.com> Cc: Sonic Zhang <sonic.zhang@analog.com> Cc: uclinux-dist-devel@blackfin.uclinux.org Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-02-20blackfin: pm: fix build errorSteven Miao1-0/+4
Only register pm ops when defined CONFIG_PM. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-12-14blackfin: SEC: clean up SEC interrupt initializationSonic Zhang1-139/+133
Append the SEC IRQ after the IVG6, which is consistent to BF5xx SIC. Exclude SIC irqchip fucntions from SEC code. Call handle_fasteoi_irq in SEC error and fault handler. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-10-08Blackfin: drop irq enable in init_arch_irq()Steven Miao1-1/+0
Kernel common code will enable irq, drop it in init_arch_irq(). Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: fix build warningBob Liu1-3/+3
Fix several build warning while using bf609-ezkit_defconfig. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: Add double fault, hardware error and NMI SEC handlerSonic Zhang1-1/+33
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: sec: Enable sec interrupt source priority configuration.Sonic Zhang1-0/+21
Customize the SEC interrupt priority array in machine ints-priority.c. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: sec: Clean up interrupt initialization code for SEC.Sonic Zhang1-87/+121
Turn SEC related macro CONFIG_BF60x into SEC_GCTL. Move machine specific GPIO_PINT macros to machine gpio header. Split SEC init_arch_irq() and vec_to_irq() from old SIC. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24cleanup: sec and linkport only built on bf60xSteven Miao1-0/+2
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24bf60x: pm: add pint suspend and resume supportSteven Miao1-18/+54
save and restore pint sec CTL save and restore pint registers add pint suspend and resume when suspend to mem Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24blackfin: mach-common: ints-priority add irq_set_wakeBob Liu1-1/+5
Add irq_set_wake to bfin_sec_irqchip, drivers like stmmac need it. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-07-24irq: set cgu event handle to fasteoi handleSteven Miao1-1/+1
Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: bf60x: add wakeup source selectSteven Miao1-1/+2
Support select the wakeup source for power management on bf60x. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: mach-common: ints-priority: fix compile errorBob Liu1-0/+2
IRQ_PINT4/PINT5 are not defined on !CONFIG_BF60x, this patch fix it. Signed-off-by: Bob Liu <lliubbo@gmail.com>
2012-05-21blackfin: mach-common: add sec support for bf60xSteven Miao1-38/+380
Add system event controller support for bf60x so that interrupt can be handled. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
2011-07-23Blackfin: gpio/ints: generalize pint logicMike Frysinger1-9/+9
Have the logic that uses peripheral interrupt blocks key off of pint defines rather than CPU names so that things are generalized across families. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf54x: switch to common pint MMR structMike Frysinger1-18/+5
We have a struct in the headers describing the register layout, so drop the local duplicate one. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-23Blackfin: bf54x: constify pint register arrayMike Frysinger1-1/+1
The array of pointers to register blocks never changes, so constify it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: bf537: demux port H mask A and emac rx intsMike Frysinger1-12/+10
The BF537 SIC combines the gpio port H mask A interrupts with the emac rx interrupt, so we need to demux this in software. It also combines the gpio port H mask B and the emac tx interrupts, and the watchdog and port F mask B interrupts, but since we don't support mask B yet, just add the defines for now. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: bf537: fix excessive gpio int demuxingMike Frysinger1-30/+25
The search logic in the gpio demux walks all possible gpio blocks starting at the specified pin. The trouble on bf537 parts when we demux the port F and port G mask A interrupts is that we also demux port H mask A ints. Most of the time this isn't an issue as people don't usually use port H, but might as well avoid it when possible. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: bf54x: drop unused pm gpio handlingMike Frysinger1-40/+2
This functionality was merged into the common bfin_pm_standby_ctrl func some time ago, so punt these now unused funcs and data, and localize the wake funcs that aren't needed externally anymore. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: move bf537-specific irq code out of common codeMike Frysinger1-138/+10
The SIC interrupt line muxing that the bf537 does is specific to this CPU (thankfully), so rip it out of the common code and move it to a bf537-specific file. This tidies up the common code significantly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: clean up irq ifdef logic a bitMike Frysinger1-47/+39
Prefer MMR named checks over part-specific lists, condense duplicated code across different #ifdef branches, simplify CONFIG_PM ifdefs, and drop unused kgdb header. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: ints-priority: unify duplicate vec to irq lookup logicMike Frysinger1-68/+44
Seems the ipipe code just copied & pasted the existing irq lookup logic, so pull the logic out of do_irq() and into a local helper, and convert the two users over to that. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-05-25Blackfin: ints-priority: clean up some local varsMike Frysinger1-17/+8
The local ivg structs need not be exported, so mark them as static. Further, the "num_spurious" variable is only incremented and never actually read anywhere, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-29bfin: Convert irq namespaceThomas Gleixner1-17/+17
Convert to the new function names. Scripted with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org
2011-03-29bfin: Final irq cleanupThomas Gleixner1-6/+3
Use the trigger type in irq_data and check level type instead of looking at desc->handle_irq. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: uclinux-dist-devel@blackfin.uclinux.org
2011-03-18Blackfin/ipipe: upgrade to I-pipe mainlinePhilippe Gerum1-4/+37
This patch introduces Blackfin-specific bits to support the current tip of the interrupt pipeline development, mainly: - 2/3-level interrupt maps (sparse IRQs) - generic virq handling - sysinfo v2 format for ipipe_get_sysinfo() Signed-off-by: Philippe Gerum <rpm@xenomai.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: convert gpio irq_chip to new functionsThomas Gleixner1-44/+48
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: convert mac irq_chip to new functionsThomas Gleixner1-7/+11
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: convert error irq_chip to new functionsThomas Gleixner1-7/+7
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: convert internal irq_chip to new functionsThomas Gleixner1-13/+28
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: convert core irq_chip to new functionsThomas Gleixner1-11/+11
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-18Blackfin: use proper wrappers for irq_descThomas Gleixner1-9/+5
Fixup the open coded access to irq_desc and use the proper wrappers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf54x: don't ack GPIO ints when unmasking themMike Frysinger1-1/+0
When unmasking a GPIO interrupt on a BF54x part, the code will implicitly ack any pending interrupts. This is not what unmasking should do and can cause people to miss interrupts from their devices, so punt the code. Reported-by: Rutger Hofman <rutger@cs.vu.nl> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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