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* Merge branch 'devicetree/next-overlay' into devicetree/nextGrant Likely2014-08-111-0/+1
|\ | | | | | | | | Conflicts: drivers/of/testcase-data/testcases.dts
| * of: Move CONFIG_OF_DYNAMIC code into a separate fileGrant Likely2014-07-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Split the dynamic device tree code into a separate file to make it really clear what features CONFIF_OF_DYNAMIC add to the kernel. Without CONFIG_OF_DYNAMIC only properties can be changed, and notifiers do not get sent. Enabling it turns on reference counting, notifiers and the ability to add and remove nodes. v2: Moved of_node_release() into dynamic.c Signed-off-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: Rob Herring <robh+dt@kernel.org>
* | Adding selftest testdata dynamically into live treeGaurav Minocha2014-07-251-1/+2
|/ | | | | | | | | | | | | | | | This patch attaches selftest's device tree data (required by /drivers/of/selftest.c) dynamically into live device tree. First, it links selftest device tree data into the kernel image and then iterates over all the nodes and attaches them into the live tree. Once the testcases are complete, it removes the data attached. This patch will remove the manual process of addition and removal of selftest device tree data into the machine's dts file. Tested successfully with current selftest's testcases. Signed-off-by: Gaurav Minocha <gaurav.minocha.os@gmail.com> [glikely: Removed ability to build as a module and fixed no-devicetree bug] Signed-off-by: Grant Likely <grant.likely@linaro.org>
* of/fdt: add FDT address translation supportRob Herring2014-05-201-0/+2
| | | | | | | | | | | | Copy u-boot's FDT address translation code from common/fdt_support. This code was originally based on the kernel's unflattened DT address parsing code. This commit can be reverted once relicensing of this code to GPLv2/BSD is done and it is added to libfdt. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Grant Likely <grant.likely@linaro.org>
* of/fdt: Convert FDT functions to use libfdtRob Herring2014-04-301-0/+2
| | | | | | | | | | | | | | | | | | | The kernel FDT functions predate libfdt and are much more limited in functionality. Also, the kernel functions and libfdt functions are not compatible with each other because they have different definitions of node offsets. To avoid this incompatibility and in preparation to add more FDT parsing functions which will need libfdt, let's first convert the existing code to use libfdt. The FDT unflattening, top-level FDT scanning, and property retrieval functions are converted to use libfdt. The scanning code should be re-worked to be more efficient and understandable by using libfdt to find nodes directly by path or compatible strings. Signed-off-by: Rob Herring <robh@kernel.org> Tested-by: Michal Simek <michal.simek@xilinx.com> Tested-by: Grant Likely <grant.likely@linaro.org> Tested-by: Stephen Chivers <schivers@csc.com>
* drivers: of: add initialization code for dynamic reserved memoryMarek Szyprowski2014-03-111-0/+1
| | | | | | | | | | | This patch adds support for dynamically allocated reserved memory regions declared in device tree. Such regions are defined by 'size', 'alignment' and 'alloc-ranges' properties. Based on previous code provided by Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* Revert "drivers: of: add initialization code for dma reserved memory"Marek Szyprowski2013-10-151-1/+0
| | | | | | | | | | This reverts commit 9d8eab7af79cb4ce2de5de39f82c455b1f796963. There is still no consensus on the bindings for the reserved memory and various drawbacks of the proposed solution has been shown, so the best now is to revert it completely and start again from scratch later. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* Merge branch 'for-v3.12' of ↵Linus Torvalds2013-09-091-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/people/mszyprowski/linux-dma-mapping Pull DMA mapping update from Marek Szyprowski: "This contains an addition of Device Tree support for reserved memory regions (Contiguous Memory Allocator is one of the drivers for it) and changes required by the KVM extensions for PowerPC architectue" * 'for-v3.12' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: ARM: init: add support for reserved memory defined by device tree drivers: of: add initialization code for dma reserved memory drivers: of: add function to scan fdt nodes given by path drivers: dma-contiguous: clean source code and prepare for device tree
| * drivers: of: add initialization code for dma reserved memoryMarek Szyprowski2013-08-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds device tree support for contiguous and reserved memory regions defined in device tree. Large memory blocks can be reliably reserved only during early boot. This must happen before the whole memory management subsystem is initialized, because we need to ensure that the given contiguous blocks are not yet allocated by kernel. Also it must happen before kernel mappings for the whole low memory are created, to ensure that there will be no mappings (for reserved blocks) or mapping with special properties can be created (for CMA blocks). This all happens before device tree structures are unflattened, so we need to get reserved memory layout directly from fdt. Later, those reserved memory regions are assigned to devices on each device structure initialization. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Acked-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com>
* | i2c: move OF helpers into the coreWolfram Sang2013-08-231-1/+0
|/ | | | | | | | | | I2C of helpers used to live in of_i2c.c but experience (from SPI) shows that it is much cleaner to have this in the core. This also removes a circular dependency between the helpers and the core, and so we can finally register child nodes in the core instead of doing this manually in each driver. So, fix the drivers and documentation, too. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* of: remove CONFIG_OF_DEVICERob Herring2013-06-121-2/+1
| | | | | | | | | | | CONFIG_OF_DEVICE is always selected when CONFIG_OF is enabled, so remove it and simplify of_platform.h and of_device.h headers. This also fixes !OF compiles using of_platform_populate. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2012-05-241-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull GPIO driver changes from Grant Likely: "Lots of gpio changes, both to core code and drivers. Changes do touch architecture code to remove the need for separate arm/gpio.h includes in most architectures. Some new drivers are added, and a number of gpio drivers are converted to use irq_domains for gpio inputs used as interrupts. Device tree support has been amended to allow multiple gpio_chips to use the same device tree node. Remaining changes are primarily bug fixes." * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (33 commits) gpio/generic: initialize basic_mmio_gpio shadow variables properly gpiolib: Remove 'const' from data argument of gpiochip_find() gpio/rc5t583: add gpio driver for RICOH PMIC RC5T583 gpiolib: quiet gpiochip_add boot message noise gpio: mpc8xxx: Prevent NULL pointer deref in demux handler gpio/lpc32xx: Add device tree support gpio: Adjust of_xlate API to support multiple GPIO chips gpiolib: Implement devm_gpio_request_one() gpio-mcp23s08: dbg_show: fix pullup configuration display Add support for TCA6424A gpio/omap: (re)fix wakeups on level-triggered GPIOs gpio/omap: fix broken context restore for non-OFF mode transitions gpio/omap: fix missing check in *_runtime_suspend() gpio/omap: remove cpu_is_omapxxxx() checks from *_runtime_resume() gpio/omap: remove suspend/resume callbacks gpio/omap: remove retrigger variable in gpio_irq_handler gpio/omap: remove saved_wakeup field from struct gpio_bank gpio/omap: remove suspend_wakeup field from struct gpio_bank gpio/omap: remove saved_fallingdetect, saved_risingdetect gpio/omap: remove virtual_irq_start variable ... Conflicts: drivers/gpio/gpio-samsung.c
| * gpio: Move DT support code into drivers/gpioGrant Likely2012-04-071-1/+0
| | | | | | | | | | | | | | | | | | | | The code in drivers/of/gpio.c isn't shared by any other subsystem since it is all gpiolib specific. drivers/gpio is a better place to maintain these functions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Linus Walleij <linus.walleij@stericsson.com>
* | spi/devicetree: Move devicetree support code into spi directoryGrant Likely2012-04-131-1/+0
|/ | | | | | | | | The SPI device tree support code isn't shared by any other subsystem. It can be moved into the core drivers/spi directory and the exported symbol can be removed. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com>
* of/mtd/nand: add generic bindings and helpersJean-Christophe PLAGNIOL-VILLARD2012-03-151-0/+1
| | | | | | | | | | | | - nand-ecc-mode : String, operation mode of the NAND ecc mode. Supported values are: "none", "soft", "hw", "hw_syndrome", "hw_oob_first", "soft_bch". - nand-bus-width : 8 or 16 bus width if not present 8 - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Stefan Roese <sr@denx.de>
* of: Add device tree selftestsGrant Likely2011-12-121-0/+1
| | | | | | | | | Add some runtime test cases for the library of device tree parsing functions. v2: - Add testcase for phandle with 0 args - Don't run testcases if testcase data isn't present in device tree Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* pci/of: Match PCI devices to OF nodes dynamicallyBenjamin Herrenschmidt2011-06-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | powerpc has two different ways of matching PCI devices to their corresponding OF node (if any) for historical reasons. The ppc64 one does a scan looking for matching bus/dev/fn, while the ppc32 one does a scan looking only for matching dev/fn on each level in order to be agnostic to busses being renumbered (which Linux does on some platforms). This removes both and instead moves the matching code to the PCI core itself. It's the most logical place to do it: when a pci_dev is created, we know the parent and thus can do a single level scan for the matching device_node (if any). The benefit is that all archs now get the matching for free. There's one hook the arch might want to provide to match a PHB bus to its device node. A default weak implementation is provided that looks for the parent device device node, but it's not entirely reliable on powerpc for various reasons so powerpc provides its own. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* of/pci: move of_irq_map_pci() into generic codeSebastian Andrzej Siewior2011-02-041-0/+1
| | | | | | | | | | | There is a tiny difference between PPC32 and PPC64. Microblaze uses the PPC32 variant. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> [grant.likely@secretlab.ca: Added comment to #endif, moved documentation block to function implementation, fixed for non ppc and microblaze compiles] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* of/net: Move of_get_mac_address() to a common source file.David Daney2010-11-011-0/+1
| | | | | | | | | | | | There are two identical implementations of of_get_mac_address(), one each in arch/powerpc/kernel/prom_parse.c and arch/microblaze/kernel/prom_parse.c. Move this function to a new common file of_net.{c,h} and adjust all the callers to include the new header. Signed-off-by: David Daney <ddaney@caviumnetworks.com> [grant.likely@secretlab.ca: protect header with #ifdef] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* of/promtree: make drivers/of/pdt.c no longer sparc-onlyAndres Salomon2010-10-101-0/+1
| | | | | | | | | | | Clean up pdt.c: - make build dependent upon config OF_PROMTREE - #ifdef out the sparc-specific stuff - create pdt-specific header Signed-off-by: Andres Salomon <dilinger@queued.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* of/address: merge of_iomap()Grant Likely2010-07-051-0/+1
| | | | | | | | | | | Merge common code between Microblaze and PowerPC. This patch creates new of_address.h and address.c files to containing address translation and mapping routines. First routine to be moved it of_iomap() Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Michal Simek <monstr@monstr.eu> CC: Stephen Rothwell <sfr@canb.auug.org.au>
* of/irq: Move irq_of_parse_and_map() to common codeGrant Likely2010-06-281-0/+1
| | | | | | | | | | | | | | Merge common code between PowerPC and Microblaze. SPARC implements irq_of_parse_and_map(), but the implementation is different, so it does not use this code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Jeremy Kerr <jeremy.kerr@canonical.com>
* of/flattree: merge find_flat_dt_string and initial_boot_paramsGrant Likely2009-11-231-0/+1
| | | | | | | | Merge common code between Microblaze and PowerPC. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Tested-by: Michal Simek <monstr@monstr.eu>
* openfirmware: Add OF phylib support codeGrant Likely2009-04-271-0/+1
| | | | | | | | | | | | | | Add support for parsing the device tree for PHY devices on an MDIO bus. Currently many of the PowerPC ethernet drivers are open coding a solution for reading data out of the device tree to find the correct PHY device. This patch implements a set of common routines to: a) let MDIO bus drivers register phy_devices described in the tree, and b) let MAC drivers find the correct phy_device via the tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* spi: Add OF binding support for SPI bussesGrant Likely2008-07-251-0/+1
| | | | | | | | This patch adds support for populating an SPI bus based on data in the OF device tree. This is useful for powerpc platforms which use the device tree instead of discrete code for describing platform layout. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* [POWERPC] i2c: Fix build breakage introduced by OF helpersJochen Friedrich2008-04-201-1/+1
| | | | | | | | | | | | | Fix build breakage introduced in commit "[POWERPC] i2c: OF helpers for the i2c API". If i2c-core is compiled as a module, the helper needs to be compiled as a module, as well. Rename i2c.c to of_i2c.c to avoid name space conflict. [paulus@samba.org: Changed dependency from OF to PPC_OF to avoid sparc{32,64} allmodconfig breakage.] Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] i2c: OF helpers for the i2c APIJochen Friedrich2008-04-171-0/+1
| | | | | | | | | | This implements various helpers to support OF bindings for the i2c API. Signed-off-by: Jochen Friedrich <jochen@scram.de> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] OF helpers for the GPIO APIAnton Vorontsov2008-04-171-0/+1
| | | | | | | | | | | | | | | | | | | This implements various helpers to support OF bindings for the GPIO LIB API. Previously this was PowerPC specific, but it seems this code isn't arch-dependent anyhow, so let's place it into of/. SPARC will not see this addition yet, real hardware seem to not use GPIOs at all. But this might change: http://www.leox.org/docs/faq_MLleon.html "16-bit I/O port" sounds promising. :-) Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Create drivers/of/platform.cStephen Rothwell2007-07-201-1/+1
| | | | | | | | and populate it with the common parts from PowerPC and Sparc[64]. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net>
* Begin to consolidate of_device.cStephen Rothwell2007-07-201-0/+1
| | | | | | | | | | | | | This moves all the common parts for the Sparc, Sparc64 and PowerPC of_device.c files into drivers/of/device.c. Apart from the simple move, Sparc gains of_match_node() and a call to of_node_put in of_release_dev(). PowerPC gains better recovery if device_create_file() fails in of_device_register(). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net>
* Start split out of common open firmware codeStephen Rothwell2007-07-201-0/+1
This creates drivers/of/base.c (depending on CONFIG_OF) and puts the first trivially common bits from the prom.c files into it. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net>
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