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* ARM: at91: add pmc DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | Specified the main Oscillator via clock binding. This will allow to do not hardcode it anymore in the DT board at 12MHz. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91/dt: add specific DT soc initJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | | | | | | | This will allow to have static Device mapping and DT probe mapping for the System Controller. Temporary keep the call to ioremap_registers() until we have the binding for the SDRAM/DDR Controller. Temporary keep the main clock hardcoded to 12MHz until we have the binding for the PMC. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91/dt: add Calao DAB-MMX daugther board support for USB-A9G20Jean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | | | | | | | | | | http://www.calao-systems.com/articles.php?lng=en&pg=6099 this daughter board add the following device: - Micro-SD socket - TTL 3V3 - (Tx/Rx/RTS/CTS) - I2C port - 0.96" Serial OLED Display Module (over UART) - MP3 decoder with Micro & Speakers - 4x PB, 4x Leds (Blue), 3x Leds (Green, Orange, Red) for now we add only the 2 UARTs, 4 Buttons, 7 leds and i2c via DT used_led1 will not be re-add via DT as it's used by the motherboard too Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91: sam9x5 add i2c DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | For now on use i2c-gpio driver on the same pin as the hardware IP. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: sam9g45 add i2c DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | For now on use i2c-gpio driver on the same pin as the hardware IP. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: usb_a9g20 add DT i2c supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | | | Use i2c-gpio and enable rv3029 RTC. Enable the rtc in the sam9g20 defconfig. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: sam9g20 add i2c DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | For now on use i2c-gpio driver on the same pin as the hardware IP. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Rob Herring <rob.herring@calxeda.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: sam9x5 add nand supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | Enable the nand in the cpu module with the partition. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* atmel/nand: add DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | Use a local copy of board informatin and fill with DT data. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: enable on flash bbt for Atmel Reference and DT boardsJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | Enable it on Calao board too as they are in DT too. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ATMEL: fix nand ecc supportJean-Christophe PLAGNIOL-VILLARD2012-03-15
| | | | | | | | | | | | | | So we can now choose for the board the ecc mode (ecc soft, soft bch, no ecc and hardware). Set ecc mode in the boards to soft as currently in the driver. Move platform data to a common header include/linux/platform_data/atmel_nand.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: David Woodhouse <dwmw2@infradead.org>
* ARM: at91: at91sam9x5cm/dt: add leds supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: usb_a9g20/dt: add gpio-keys supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: at91sam9m10g45ek/dt: add gpio-keys supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: at91sam9m10g45ek/dt: add leds supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | | | Use the gpio for d7 as we do not support yet the pwm led via dt. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: usb_a9g20/dt: add leds supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91/pio: add new PIO3 featuresNicolas Ferre2012-03-01
| | | | | | | | | | | | | | | This patch adds the support for new PIO controller found on some at91sam SOCs. - more peripheral multiplexing - more features to configure on a PIO (pull-down, Schmitt trigger, debouncer) - support for several IRQ triggering features (type and polarity) Support for those new features are retrieved from the device tree compatibility string. Debugfs at91_gpio file is updated to monitor configuration. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: add sam9_smc.o to at91sam9x5 buildNicolas Ferre2012-03-01
| | | | | | | Add these SMC accessors to the at91sam9x5 as we will need them for NAND flash (for instance). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91/tc: add device tree support to atmel_tclibNicolas Ferre2012-03-01
| | | | | | | | | | | | | | Device tree support added to atmel_tclib: the generic Timer Counter library. This is used by the clocksource/clockevent driver tcb_clksrc. The current DT enabled platforms are also modified to use it: - .dtsi files are modified to add Timer Counter Block entries - alias are created to allow identification of each block - clkdev lookup tables are added for clocks identification. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca>
* ARM: at91/tclib: take iomem size from resourceNicolas Ferre2012-03-01
| | | | | | | | | | | Requesting iomem region and ioremaping is now done using the resource size specified instead of a constant value. Each <SoC>_device.c file is modified accordingly to reflect actual user interface size. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/pit: add traces in case of errorNicolas Ferre2012-03-01
| | | | | | | Traces related to IRQ management are useful for timers in case of non-working IRQ subsystem (switch to irq_domain for instance). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: pit add DT supportJean-Christophe PLAGNIOL-VILLARD2012-03-01
| | | | | | | | | | Retreive registers address and IRQ from device tree entry. Called from at91_dt_init_irq() so that timers are up-n-running when timers initialization will occur. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: change error path and interrupts property handling] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91: AIC and GPIO IRQ device tree initializationNicolas Ferre2012-03-01
| | | | | | | | | | | | | | | | Both AIC and GPIO controllers are now using the standard of_irq_init() function to initialize IRQs in case of DT use. The DT specific initialization functions are now separated from the non-DT case and are now using "linear" irq domains. The .map() irqdomain operation is responsible for positioning the IRQ handlers. In AIC case, the Linux IRQ number is directly programmed in the hardware to avoid an additional reverse mapping operation. The AIC position its irq domain as the "default" irq domain. For DT case, the priority is not yet filled in the SMR. It will be the subject of another patch. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* ARM: at91/board-dt: remove AIC irq domain from board fileNicolas Ferre2012-03-01
| | | | | | | | Adding of irqdomain in AIC code make the specification of the irq domain in board file useless. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/gpio: remove the static specification of gpio_chip.baseNicolas Ferre2012-03-01
| | | | | | | | This value is determined at runtime using device tree or platform data information. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/gpio: add .to_irq gpio_chip handlerNicolas Ferre2012-03-01
| | | | | | | | | | Replace the gpio_to_irq() macro by a plain gpiolib .to_irq() handler. This call is using the irqdomain to translate hardware to Linux IRQ numbers. The irq_to_gpio() macro is completely removed. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/gpio: non-DT builds do not have gpio_chip.of_node fieldNicolas Ferre2012-03-01
| | | | | | | | | | | | Protect build failure in case of non-DT configuration: the gpio_chip structure does not have a of_node field in case of !CONFIG_OF_GPIO. Keep this in a separate patch as it can be reverted if the field is added for both DT/non-DT cases. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/gpio: add irqdomain and DT supportNicolas Ferre2012-03-01
| | | | | | | | | | Add "legacy" type of irqdomain to preserve old-style numbering and allow smooth transition for both DT and non-DT cases. Original idea and code by Jean-Christophe Plagniol-Villard. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/gpio: change comments and one variable nameNicolas Ferre2012-03-01
| | | | | | | | | | | What was true only on at91sam9263 about the sharing of a single AIC IRQ line for several GPIO banks is now used by several Atmel SoCs. Change a variable name to allow better understanding while introducing IRQ domains in following patches. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* ARM: at91/snapper9260: move gpio_to_irq out of structure initializationNicolas Ferre2012-03-01
| | | | | | | | | | gpio_to_irq() implementation will be moved from a macro to a plain function: we cannot use it in a structure initialization anymore. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Reviewed-by: Ryan Mallon <rmallon@gmail.com>
* ARM: at91/aic: add irq domain and device tree supportNicolas Ferre2012-03-01
| | | | | | | | | | | | | Add an irqdomain for the AIC interrupt controller. The device tree support is mapping the registers and is using the irq_domain_add_legacy() to manage hwirq translation. The documentation is describing the meaning of the two cells required for using this "interrupt-controller" in a device tree node. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Merge branch 'irqdomain/next' of git://git.secretlab.ca/git/linux-2.6Nicolas Ferre2012-03-01
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| * irq_domain: Centralize definition of irq_dispose_mapping()Grant Likely2012-02-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several architectures define their own empty irq_dispose_mapping(). Since the irq_domain code is centralized now, there is little need to do so. This patch removes them and creates a new empty copy when !CONFIG_IRQ_DOMAIN is selected. The patch also means that IRQ_DOMAIN becomes selectable on all architectures. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jonas Bonn <jonas@southpole.se> Cc: sparclinux@vger.kernel.org Cc: linux@lists.openrisc.net
| * irq_domain/mips: Allow irq_domain on MIPSGrant Likely2012-02-24
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes IRQ_DOMAIN usable on MIPS. It uses an ugly workaround to preserve current behaviour so that MIPS has time to add irq_domain registration to the irq controller drivers. The workaround will be removed in Linux v3.6 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org
| * irq_domain/x86: Convert x86 (embedded) to use common irq_domainGrant Likely2012-02-23
| | | | | | | | | | | | | | | | | | | | This patch removes the x86-specific definition of irq_domain and replaces it with the common implementation. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de>
| * ppc-6xx: fix build failure in flipper-pic.c and hlwd-pic.cPaul Gortmaker2012-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit bae1d8f19983fbfa25559aa3cb6a81a84aa82a18 (linux-next) "irq_domain/powerpc: Use common irq_domain structure instead of irq_host" made this change: -static struct irq_host *flipper_irq_host; +static struct irq_domain *flipper_irq_host; and this change: -static struct irq_host *hlwd_irq_host; +static struct irq_domain *hlwd_irq_host; The intent was to change the type, and not the name, but then in a couple of instances, it looks like the sed to change the irq_domain_ops name inadvertently also changed the irq_host name where it was not supposed to, causing build failures. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * irq_domain/microblaze: Convert microblaze to use irq_domainsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts Microblaze to use the irq_domain remapper and get away from hard coding the offset between hwirq number and the linux irq number space. This also paves the way for multiple interrupt controllers. v2: Don't enable SPARSE_IRQ and keep NR_IRQS set to 33 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Michal Simek <monstr@monstr.eu> Cc: Rob Herring <rob.herring@calxeda.com> Cc: John Williams <john.williams@petalogix.com> Cc: John Linn <john.linn@xilinx.com>
| * irq_domain/powerpc: Replace custom xlate functions with library functionsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts a number of the powerpc drivers to use the common library of irq_domain xlate functions, dropping a bunch of lines in the process. v5: - Remove tsi108 changes from patch Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain/powerpc: constify irq_domain_opsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | Make all the irq_domain_ops structures in powerpc 'static const' Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain/c6x: Use library of xlate functionsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | The c6x irq controllers don't need to define custom .xlate hooks Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Mark Salter <msalter@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de>
| * irq_domain/c6x: constify irq_domain structuresGrant Likely2012-02-16
| | | | | | | | | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Mark Salter <msalter@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de>
| * irq_domain/c6x: Convert c6x to use generic irq_domain support.Mark Salter2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | The C6X IRQ support was copied almost verbatim from the PowerPC virtual IRQ code. The PowerPC code was used as the basis for generic irq_domain support, so this patch mostly copies what what done to arch/powerpc by Grant Likely in his irq_domain patch series. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Thomas Gleixner <tglx@linutronix.de>
| * irq_domain: constify irq_domain_opsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Make irq_domain_ops pointer a constant to make it safer for multiple instances to share the same ops pointer and change the irq_domain code so that it does not modify the ops. v4: Fix mismatched type reference in powerpc code Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain: Remove irq_domain_add_simple()Grant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | irq_domain_add_simple() was a stop-gap measure until complete irq_domain support was complete. This patch removes the irq_domain_add_simple() interface. This patch also drops the explicit irq_domain initialization performed by the mach-versatile code because the versatile interrupt controller already has irq_domain support built into it. This was a bug that was hanging around quietly for a while, but with the full irq_domain which actually verifies that irq_domain ranges are available it would cause the registration to fail and the system wouldn't boot. v4: Fixed number of irqs in mx5 gpio code v2: Updated to pass in host_data pointer on irq_domain allocation. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Cc: Russell King <linux@arm.linux.org.uk> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain: Remove 'new' irq_domain in favour of the ppc oneGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the simplistic implementation of irq_domains and enables the powerpc infrastructure for all irq_domain users. The powerpc infrastructure includes support for complex mappings between Linux and hardware irq numbers, and can manage allocation of irq_descs. This patch also converts the few users of irq_domain_add()/irq_domain_del() to call irq_domain_add_legacy() instead. v3: Fix bug that set up too many irqs in translation range. v2: Fix removal of irq_alloc_descs() call in gic driver Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain: Add support for base irq and hwirq in legacy mappingsGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for a legacy mapping where irq = (hwirq - first_hwirq + first_irq) so that a controller driver can allocate a fixed range of irq_descs and use a simple calculation to translate back and forth between linux and hw irq numbers. This is needed to use an irq_domain with many of the ARM interrupt controller drivers that manage their own irq_desc allocations. Ultimately the goal is to migrate those drivers to use the linear revmap, but doing it this way allows each driver to be converted separately which makes the migration path easier. This patch generalizes the IRQ_DOMAIN_MAP_LEGACY method to use (first_irq-first_hwirq) as the offset between hwirq and linux irq number, and adds checks to make sure that the hwirq number does not exceed range assigned to the controller. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain: Replace irq_alloc_host() with revmap-specific initializersGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each revmap type has different arguments for setting up the revmap. This patch splits up the generator functions so that each revmap type can do its own setup and the user doesn't need to keep track of how each revmap type handles the arguments. This patch also adds a host_data argument to the generators. There are cases where the host_data pointer will be needed before the function returns. ie. the legacy map calls the .map callback for each irq before returning. v2: - Add void *host_data argument to irq_domain_add_*() functions - fixed failure to compile - Moved IRQ_DOMAIN_MAP_* defines into irqdomain.c Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain: Move irq_domain code from powerpc to kernel/irqGrant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | | | This patch only moves the code. It doesn't make any changes, and the code is still only compiled for powerpc. Follow-on patches will generalize the code for other architectures. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain/powerpc: Eliminate virq_is_host()Grant Likely2012-02-16
| | | | | | | | | | | | | | | | | | | | There is only one user, and it is trivial to open-code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
| * irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() insteadGrant Likely2012-02-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch drops the powerpc-specific irq_map table and replaces it with directly using the irq_alloc_desc()/irq_free_desc() interfaces for allocating and freeing irq_desc structures. This patch is a preparation step for generalizing the powerpc-specific virq infrastructure to become irq_domains. As part of this change, the irq_big_lock is changed to a mutex from a raw spinlock. There is no longer any need to use a spin lock since the irq_desc allocation code is now responsible for the critical section of finding an unused range of irq numbers. The radix lookup table is also changed to store the irq_data pointer instead of the irq_map entry since the irq_map is removed. This should end up being functionally equivalent since only allocated irq_descs are ever added to the radix tree. v5: - Really don't ever allocate virq 0. The previous version could still do it if hint == 0 - Respect irq_virq_count setting for NOMAP. Some NOMAP domains cannot use virq values above irq_virq_count. - Use numa_node_id() when allocating irq_descs. Ideally the API should obtain that value from the caller, but that touches a lot of call sites so will be deferred to a follow-on patch. - Fix irq_find_mapping() to include irq numbers lower than NUM_ISA_INTERRUPTS. With the switch to irq_alloc_desc*(), the lowest possible allocated irq is now returned by arch_probe_nr_irqs(). v4: - Fix incorrect access to irq_data structure in debugfs code - Don't ever allocate virq 0 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
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