user/sven/linux.git/kernel/irq/generic-chip.c, branch v4.4.166

genirq/generic_chip: Add irq_unmap callback

2016-10-31T10:13:59Z

commit ee26c013cdee0b947e29d6cadfb9ff3341c69ff9 upstream. Without this patch irq_domain_disassociate() cannot properly release the interrupt. In fact, irq_map_generic_chip() checks a bit on 'gc->installed' but said bit is never cleared, only set. Commit 088f40b7b027 ("genirq: Generic chip: Add linear irq domain support") added irq_map_generic_chip() function and also stated "This lacks a removal function for now". This commit provides an implementation of an unmap function that can be called by irq_domain_disassociate(). [ tglx: Made the function static and removed the export as we have neither a prototype nor a modular user. ] Fixes: 088f40b7b027 ("genirq: Generic chip: Add linear irq domain support") Signed-off-by: Sebastian Frias Cc: Marc Zyngier Cc: Mason Cc: Jason Cooper Link: http://lkml.kernel.org/r/579F5C5A.2070507@laposte.net Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

genirq: Add chip_[suspend|resume] PM support to irq_chip

2015-07-27T06:09:38Z

Some (admittedly odd) irqchips perform functions that are not directly related to any of their child IRQ lines, and therefore need to perform some tasks during suspend/resume regardless of whether there are any "installed" interrupts for the irqchip. However, the current generic-chip framework does not call the chip's irq_{suspend,resume} when there are no interrupts installed (this makes sense, because there are no irq_data objects for such a call to be made). More specifically, irq-bcm7120-l2 configures both a forwarding mask (which affects other top-level GIC IRQs) and a second-level interrupt mask (for managing its own child interrupts). The former must be saved/restored on suspend/resume, even when there's nothing to do for the latter. This patch adds a new set of suspend/resume hooks to irq_chip_generic, to help represent *chip* suspend/resume, rather than IRQ suspend/resume. These callbacks will always be called for an IRQ chip (regardless of the installed interrupts) and are based on the per-chip irq_chip_generic struct, rather than the per-IRQ irq_data struct. The original problem report is described in extra detail here: http://lkml.kernel.org/g/20150619224123.GL4917@ld-irv-0074 Signed-off-by: Brian Norris Tested-by: Florian Fainelli Cc: Gregory Fong Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-mips@linux-mips.org Cc: Kevin Cernekee Cc: Jason Cooper Link: http://lkml.kernel.org/r/1437607300-40858-1-git-send-email-computersforpeace@gmail.com Signed-off-by: Thomas Gleixner

genirq: generic chip: Support hierarchy domain

2015-05-18T15:32:44Z

Use the new helper function irq_domain_set_info to make sure the function irq_domain_set_hwirq_and_chip is being called, which is crucial to save irqdomain specific data to irq_data. Signed-off-by: Stefan Agner Cc: marc.zyngier@arm.com Cc: linux@arm.linux.org.uk Cc: u.kleine-koenig@pengutronix.de Cc: olof@lixom.net Cc: arnd@arndb.de Cc: daniel.lezcano@linaro.org Cc: mark.rutland@arm.com Cc: pawel.moll@arm.com Cc: robh+dt@kernel.org Cc: ijc+devicetree@hellion.org.uk Cc: galak@codeaurora.org Cc: mcoquelin.stm32@gmail.com Cc: linux-arm-kernel@lists.infradead.org Cc: shawn.guo@linaro.org Cc: kernel@pengutronix.de Cc: jason@lakedaemon.net Link: http://lkml.kernel.org/r/1431769465-26867-4-git-send-email-stefan@agner.ch Signed-off-by: Thomas Gleixner

genirq: Generic chip: Add big endian I/O accessors

2014-11-09T04:02:00Z

Use io{read,write}32be if the caller specified IRQ_GC_BE_IO when creating the irqchip. Signed-off-by: Kevin Cernekee Acked-by: Thomas Gleixner Acked-by: Acked-by: Arnd Bergmann Link: https://lkml.kernel.org/r/1415342669-30640-5-git-send-email-cernekee@gmail.com Signed-off-by: Jason Cooper

genirq: Generic chip: Change irq_reg_{readl,writel} arguments

2014-11-09T04:01:22Z

Pass in the irq_chip_generic struct so we can use different readl/writel settings for each irqchip driver, when appropriate. Compute (gc->reg_base + reg_offset) in the helper function because this is pretty much what all callers want to do anyway. Compile-tested using the following configurations: at91_dt_defconfig (CONFIG_ATMEL_AIC_IRQ=y) sama5_defconfig (CONFIG_ATMEL_AIC5_IRQ=y) sunxi_defconfig (CONFIG_ARCH_SUNXI=y) tb10x (ARC) is untested. Signed-off-by: Kevin Cernekee Acked-by: Thomas Gleixner Acked-by: Acked-by: Arnd Bergmann Link: https://lkml.kernel.org/r/1415342669-30640-3-git-send-email-cernekee@gmail.com Signed-off-by: Jason Cooper

genirq: generic chip: Export irq_map_generic_chip function

2014-07-17T13:30:00Z

Export the generic irq map function in order to provide irq_domain ops with generic mapping and specific of xlate function (needed by the new atmel AIC driver). Signed-off-by: Boris BREZILLON Acked-by: Thomas Gleixner Link: https://lkml.kernel.org/r/1405012462-766-2-git-send-email-boris.brezillon@free-electrons.com Signed-off-by: Jason Cooper

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-07-13T22:37:30Z

Pull irq updates from Thomas Gleixner: - core fix for missing round up in the generic irq chip implementation - new irq chip for MOXA SoCs - a few fixes and cleanups in the irqchip drivers * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: Add support for MOXA ART SoCs genirq: generic chip: Use DIV_ROUND_UP to calculate numchips irqchip: nvic: Fix wrong num_ct argument for irq_alloc_domain_generic_chips() irqchip: sun4i: Staticize sun4i_irq_ack() irqchip: vt8500: Staticize local symbols

Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux

2013-07-06T19:37:04Z

Pull irqdomain refactoring from Grant Likely: "This is the long awaited simplification of irqdomain. It gets rid of the different types of irq domains and instead both linear and tree mappings can be supported in a single domain. Doing this removes a lot of special case code and makes irq domains simpler to understand overall" * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux: irq: fix checkpatch error irqdomain: Include hwirq number in /proc/interrupts irqdomain: make irq_linear_revmap() a fast path again irqdomain: remove irq_domain_generate_simple() irqdomain: Refactor irq_domain_associate_many() irqdomain: Beef up debugfs output irqdomain: Clean up aftermath of irq_domain refactoring irqdomain: Eliminate revmap type irqdomain: merge linear and tree reverse mappings. irqdomain: Add a name field irqdomain: Replace LEGACY mapping with LINEAR irqdomain: Relax failure path on setting up mappings

genirq: generic chip: Use DIV_ROUND_UP to calculate numchips

2013-07-05T09:39:25Z

The number of interrupts in a domain may be not divisible by the number of interrupts each chip handles. Integer division may truncate the result, thus use DIV_ROUND_UP to count numchips. Seems all users of irq_alloc_domain_generic_chips() in current code do not have this issue. I just found the issue while reading the code. Signed-off-by: Axel Lin Cc: Grant Likely Cc: Tony Lindgren Cc: Arnd Bergmann Link: http://lkml.kernel.org/r/1373015592.18252.2.camel@phoenix Signed-off-by: Thomas Gleixner

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-07-04T18:40:58Z

Pull trivial tree updates from Jiri Kosina: "The usual stuff from trivial tree" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) treewide: relase -> release Documentation/cgroups/memory.txt: fix stat file documentation sysctl/net.txt: delete reference to obsolete 2.4.x kernel spinlock_api_smp.h: fix preprocessor comments treewide: Fix typo in printk doc: device tree: clarify stuff in usage-model.txt. open firmware: "/aliasas" -> "/aliases" md: bcache: Fixed a typo with the word 'arithmetic' irq/generic-chip: fix a few kernel-doc entries frv: Convert use of typedef ctl_table to struct ctl_table sgi: xpc: Convert use of typedef ctl_table to struct ctl_table doc: clk: Fix incorrect wording Documentation/arm/IXP4xx fix a typo Documentation/networking/ieee802154 fix a typo Documentation/DocBook/media/v4l fix a typo Documentation/video4linux/si476x.txt fix a typo Documentation/virtual/kvm/api.txt fix a typo Documentation/early-userspace/README fix a typo Documentation/video4linux/soc-camera.txt fix a typo lguest: fix CONFIG_PAE -> CONFIG_x86_PAE in comment ...