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*-. Merge remote-tracking branches 'regmap/topic/atomic', 'regmap/topic/debugfs' ↵Mark Brown2015-10-121-0/+3
|\ \ | | | | | | | | | and 'regmap/topic/irq-hdr' into regmap-next
| | * regmap: Add generic macro to define regmap_irqQipeng Zha2015-09-241-0/+3
| |/ | | | | | | | | | | | | | | | | Add REGMAP_IRQ_REG macro in regmap.h to define regmap_irq structure easily for other driver module. Signed-off-by: Qipeng Zha <qipeng.zha@intel.com> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* | Merge tag 'regmap-offload-update-bits' into regmap-nextMark Brown2015-10-121-0/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | regmap: Allow buses to provide a custom update_bits() operation Some buses provide a native _update_bits() operation which for uncached registers is faster than doing a read/modify/write cycle as it is a single bus transaction. Add support for implementing this to regmap. # gpg: Signature made Tue 06 Oct 2015 16:21:47 BST using RSA key ID 5D5487D0 # gpg: Oops: keyid_from_fingerprint: no pubkey # gpg: Oops: keyid_from_fingerprint: no pubkey # gpg: key 00000000 occurs more than once in the trustdb # gpg: key 16005C11: no public key for trusted key - skipped # gpg: key 16005C11 marked as ultimately trusted # gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" # gpg: aka "Mark Brown <broonie@debian.org>" # gpg: aka "Mark Brown <broonie@kernel.org>" # gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" # gpg: aka "Mark Brown <broonie@linaro.org>" # gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
| * | regmap: Allow installing custom reg_update_bits functionJon Ringle2015-10-061-0/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | This commit allows installing a custom reg_update_bits function for cases where the hardware provides a mechanism to set or clear register bits without a read/modify/write cycle. Such is the case with the Microchip ENCX24J600. If a custom reg_update_bits function is provided, it will only be used against volatile registers. Signed-off-by: Jon Ringle <jringle@gridpoint.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | regmap: irq: add ack_invert flag for chips using cleared bits as ackGuo Zeng2015-09-171-0/+2
| | | | | | | | | | | | | | | | An user will be CSR SiRFSoC ARM chips. Signed-off-by: Guo Zeng <Guo.Zeng@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | regmap: irq: add support for chips who have separate unmask registersGuo Zeng2015-09-171-0/+3
|/ | | | | | | | | | | | Some chips have separate unmask registers from mask registers for some consideration of concurrency SMP write performance. And this patch adds a flag for it. An user will be CSR SiRFSoC ARM chips. Signed-off-by: Guo Zeng <Guo.Zeng@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'regmap/topic/lockdep' and ↵Mark Brown2015-09-041-52/+311
|\ \ | | | | | | | | | 'regmap/topic/seq-delay' into regmap-next
| | * regmap: Apply optional delay in multi_reg_write/register_patchNariman Poushin2015-07-161-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an optional delay_us field in reg_sequence to allow the client to specify a delay (in microseconds) to be applied after any given write in a sequence of writes. We treat a delay in a sequence the same way we treat a page change as they are logically similar in that you can coalesce all write before a delay (in the same way you can coalesce all writes before a page change is needed) Signed-off-by: Nariman Poushin <nariman@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * regmap: Use reg_sequence for multi_reg_write / register_patchNariman Poushin2015-07-161-3/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate the functionality using sequences of register writes from the functions that take register defaults. This change renames the arguments in order to support the extension of reg_sequence to take an optional delay to be applied after any given register in a sequence is written. This avoids adding an int to all register defaults, which could substantially increase memory usage for regmaps with large default tables. This also updates all the clients of multi_reg_write/register_patch. Signed-off-by: Nariman Poushin <nariman@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | regmap: Move documentation to regmap.hNicolas Boichat2015-08-111-11/+162
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Init functions defined in regmap*.c files are now prefixed with __, take lockdep key and class parameters, and should not be called directly: move the documentation to regmap.h, where the macros are defined. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | regmap: Use different lockdep class for each regmap init callNicolas Boichat2015-08-071-49/+143
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lockdep validator complains about recursive locking and deadlock when two different regmap instances are called in a nested order. That happens anytime a regmap read/write call needs to access another regmap. This is because, for performance reason, lockdep groups all locks initialized by the same mutex_init() in the same lock class. Therefore all regmap mutexes are in the same lock class, leading to lockdep "nested locking" warnings if a regmap accesses another regmap. In general, it is impossible to establish in advance the hierarchy of regmaps, so we make sure that each regmap init call initializes its own static lock_class_key. This is done by wrapping all regmap_init calls into macros. This also allows us to give meaningful names to the lock_class_key. For example, in rt5677 case, we have in /proc/lockdep_chains: irq_context: 0 [ffffffc0018d2198] &dev->mutex [ffffffc0018d2198] &dev->mutex [ffffffc001bd7f60] rt5677:5104:(&rt5677_regmap)->_lock [ffffffc001bd7f58] rt5677:5096:(&rt5677_regmap_physical)->_lock [ffffffc001b95448] &(&base->lock)->rlock The above would have resulted in a lockdep recursive warning previously. This is not the case anymore as the lockdep validator now clearly identifies the 2 regmaps as separate. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'regmap/topic/debugfs' and ↵Mark Brown2015-09-041-0/+11
|\ \ \ | | |/ | |/| | | | 'regmap/topic/force-update' into regmap-next
| | * regmap: add regmap_fields_force_write()Kuninori Morimoto2015-07-101-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | regmap_fields_force_write() is similar to regmap_fields_write(), but regmap_fields_force_write() write data to register even though it is same value. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * regmap: add regmap_write_bits()Kuninori Morimoto2015-07-101-0/+9
| |/ | | | | | | | | | | | | | | | | regmap_write_bits() is similar to regmap_update_bits(), but regmap_write_bits() write data to register even though it is same value. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | regmap: regmap max_raw_read/write getter functionsMarkus Pargmann2015-08-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Add functions to access the maximum size we can read/write using regmap_raw_read/write(). This helps drivers that need to know how much they can write with the raw functions without problems. There are some devices (e.g. bmc150) that have fifos as registers which need to be read in specific chunks otherwise samples are dropped. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org>
* | regmap: Introduce max_raw_read/write for regmap_bulk_read/writeMarkus Pargmann2015-08-301-0/+4
| | | | | | | | | | | | | | | | | | | | | | There are some buses which have a limit on the maximum number of bytes that can be send/received. An example for this is I2C_FUNC_SMBUS_I2C_BLOCK which does not support any reads/writes of more than 32 bytes. The regmap_bulk operations should still be able to utilize the full 32 bytes in this case. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org>
* | regmap: Add missing comments about struct regmap_busMarkus Pargmann2015-08-211-1/+4
|/ | | | | | | | There are some fields of this struct undocumented or old. This patch updates the missing comments. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Mark Brown <broonie@kernel.org>
* regmap: Introduce regmap_get_reg_strideSrinivas Kandagatla2015-05-221-0/+7
| | | | | | | | | | This patch introduces regmap_get_reg_stride() function which would be used by the infrastructures like nvmem framework built on top of regmap. Mostly this function would be used for sanity checks on inputs within such infrastructure. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* regmap: Introduce regmap_get_max_registerSrinivas Kandagatla2015-05-221-0/+7
| | | | | | | | | This patch introduces regmap_get_max_register() function which would be used by the infrastructures like nvmem framework built on top of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* regmap: correct the description of structure element in reg_fieldBintian Wang2015-01-271-1/+1
| | | | | | | | Fix incorrect description of structure element "msb", which is described as "reg". Signed-off-by: Bintian Wang <bintian.wang@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* regmap: ac97: Add generic AC'97 callbacksMark Brown2014-11-191-0/+7
| | | | | | | | Use the recently added support for bus operations to provide a standard mapping for AC'97 register I/O. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
* regmap: Fix return code for stub regmap_get_device()Mark Brown2014-07-251-1/+1
| | | | | | We return a pointer, not an int. Signed-off-by: Mark Brown <broonie@linaro.org>
* regmap: Add regmap_get_deviceTuomas Tynkkynen2014-07-251-0/+7
| | | | | | | | Add a new function regmap_get_device to obtain the underlying struct device from a regmap. Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* regmap: add reg_read/reg_write callbacks to regmap_bus structBoris BREZILLON2014-04-181-0/+6
| | | | | | | | | | | | | Some busses do not support sending/receiving multiple registers in one go. Such kind of busses just unpack the registers that have been previously packed by the regmap core or pack registers that will be later unpacked by the core code. Add reg_write and reg_read callbacks in order to optimize access through this kind of busses. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* Merge tag 'char-misc-3.15-rc1' of ↵Linus Torvalds2014-04-011-4/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver patches from Greg KH: "Here's the big char/misc driver updates for 3.15-rc1. Lots of various things here, including the new mcb driver subsystem. All of these have been in linux-next for a while" * tag 'char-misc-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (118 commits) extcon: Move OF helper function to extcon core and change function name extcon: of: Remove unnecessary function call by using the name of device_node extcon: gpio: Use SIMPLE_DEV_PM_OPS macro extcon: palmas: Use SIMPLE_DEV_PM_OPS macro mei: don't use deprecated DEFINE_PCI_DEVICE_TABLE macro mei: amthif: fix checkpatch error mei: client.h fix checkpatch errors mei: use cl_dbg where appropriate mei: fix Unnecessary space after function pointer name mei: report consistently copy_from/to_user failures mei: drop pr_fmt macros mei: make me hw headers private to me hw. mei: fix memory leak of pending write cb objects mei: me: do not reset when less than expected data is received drivers: mcb: Fix build error discovered by 0-day bot cs5535-mfgpt: Simplify dependencies spmi: pm: drop bus-level PM suspend/resume routines spmi: pmic_arb: make selectable on ARCH_QCOM Drivers: hv: vmbus: Increase the limit on the number of pfns we can handle pch_phub: Report error writing MAC back to user ...
| * regmap: spmi: support base and extended register spacesJosh Cartwright2014-02-151-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SPMI states that a slave may contain two register spaces, the Base register space is a 5-bit byte-addressable space accessed via the Register Read/Write and Register Zero Write command sequences, and the Extended register space: a 16-bit byte-addressable space accessed via the Extended Read/Write and Extended Read/Write Long command sequences. Provide support for accessing both of these spaces, taking advantage of the more bandwidth-efficient commands ('Register 0 Write' vs 'Register Write', and 'Extended Register Read/Write' vs 'Extended Register Read/Write Long') when possible. Signed-off-by: Josh Cartwright <joshc@codeaurora.org> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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*---. \ Merge remote-tracking branches 'regmap/topic/cache', 'regmap/topic/irq', ↵Mark Brown2014-03-281-1/+19
|\ \ \ \ | |_|_|/ |/| | | | | | | 'regmap/topic/lock', 'regmap/topic/mmio', 'regmap/topic/nodev', 'regmap/topic/parse-val' and 'regmap/topic/patch' into regmap-next
| | | * regmap: Implementation for regmap_multi_reg_writeOpensource [Anthony Olech]2014-03-101-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the implementation of regmap_multi_reg_write() There is a new capability 'can_multi_write' that device drivers must set in order to use this multi reg write mode. This replaces the first definition, which just defined the API. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * regmap: Add bypassed version of regmap_multi_reg_writeCharles Keepax2014-02-261-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Devices with more complex boot proceedures may occasionally apply the register patch manual. regmap_multi_reg_write is a logical way to do so, however the patch must be applied with cache bypass on, such that it doesn't override any user settings. This patch adds a regmap_multi_reg_write_bypassed function that applies a set of writes with the bypass enabled. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * regmap: Mark reg_defaults in regmap_multi_reg_write as constCharles Keepax2014-02-261-1/+1
| |_|/ |/| | | | | | | | | | | | | | | | | | | | There should be no need for the writes supplied to this function to be edited by it so mark them as const. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * regmap: add regmap_parse_val apiNenghua Cao2014-03-061-0/+9
| |/ |/| | | | | | | | | | | | | | | | | | | | | In some cases, we need regmap's format parse_val function to do be/le translation according to the bus configuration. For example, snd_soc_bytes_put() uses regmap to write/read values, and use cpu_to_be() directly to covert MASK into big endian. This is a defect, and should use regmap's format function to do it according to bus configuration. Signed-off-by: Nenghua Cao <nhcao@marvell.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * regmap: Separate regmap dev initializationMichal Simek2014-02-161-0/+2
|/ | | | | | | | Create special function regmap_attach_dev which can be called separately out of regmap_init. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* Merge remote-tracking branch 'regmap/topic/ack' into regmap-nextMark Brown2014-01-091-1/+4
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| * regmap: irq: Allow using zero value for ack_baseAlexander Shiyan2013-12-161-1/+4
| | | | | | | | | | | | | | | | | | | | | | In some cases, clear interrupt register may be at address 0. This patch allows to use such configurations by adding additional configuration bit to indicate this. [With doc fix from Levente Kurusa <levex@linux.com> -- broonie] Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Mark Brown <broonie@linaro.org>
* | regmap: fix a couple of typosLaszlo Papp2014-01-091-5/+5
|/ | | | | | | | | | These sentences are not proper English due to the typos. I had initially caught one of them while trying to understand the regmap feature, and then I just ran the vim spell checker, and went through all the items that would need to be fixed for this header file. Signed-off-by: Laszlo Papp <lpapp@kde.org> Signed-off-by: Mark Brown <broonie@linaro.org>
* Merge remote-tracking branch 'regmap/topic/spmi' into regmap-nextMark Brown2013-10-281-0/+5
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| * regmap: add SPMI supportJosh Cartwright2013-10-281-0/+5
| | | | | | | | | | | | | | | | | | Add basic support for the System Power Management Interface (SPMI) bus. This is a simple implementation which only implements register accesses via the Extended Register Read/Write Long commands. Signed-off-by: Josh Cartwright <joshc@codeaurora.org> Signed-off-by: Mark Brown <broonie@linaro.org>
* | Merge remote-tracking branch 'regmap/topic/range' into regmap-nextMark Brown2013-10-281-0/+2
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| * | regmap: add helper macro to set min/max range of registerLaxman Dewangan2013-09-201-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | Add helper macro to set the min and max value of the register range. This is useful when initialising the register ranges of the device like static const struct regmap_range readable_ranges[] = { regmap_reg_range(DEVICE_REG0, DEVICE_REG10), }; Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | Merge remote-tracking branch 'regmap/topic/multi' into regmap-nextMark Brown2013-10-281-0/+2
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| * | regmap: new API regmap_multi_reg_write() definitionAnthony Olech2013-10-141-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New API regmap_multi_reg_write() is defined that allows a set of reg,val pairs to be written to a I2C client device as one block transfer from the point of view of a single I2C master system. A simple demonstration implementation is included that just splits the block write request into a sequence of single register writes. The implementation will be modified later to support those I2C clients that implement the alternative non-standard MULTIWRITE block write mode so to achieve a single I2C transfer that will be atomic even in multiple I2C master systems. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Signed-off-by: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | Merge remote-tracking branch 'regmap/topic/field' into regmap-nextMark Brown2013-10-281-0/+13
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| * | regmap: Add regmap_fields APIsKuninori Morimoto2013-09-171-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current Linux kernel is supporting regmap_field method and it is very useful feature. It needs one regmap_filed for one register access. OTOH, there is multi port device which has many same registers in the market. The difference for each register access is only its address offset. Current API needs many regmap_field for such device, but it is not good. This patch adds new regmap_fileds API which can care about multi port/offset access via regmap. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | regmap: add regmap_field_update_bits()Kuninori Morimoto2013-09-171-0/+2
| |/ | | | | | | | | | | | | | | Current regmap_field is supporting read/write functions. This patch adds new update_bits function for it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* | regmap: Provide asynchronous write and update bits operationsMark Brown2013-10-091-0/+31
|/ | | | | | | | | | Make it easier for drivers to include single register writes in asynchronous sequences by providing async versions of the write and update bits operations. The update bits operations are only likely to be effective when used with devices that have caches but this is common enough to be useful. Signed-off-by: Mark Brown <broonie@linaro.org>
* Merge tag 'regmap-v3.12' of ↵Linus Torvalds2013-09-031-3/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap updates from Mark Brown: "A quiet release for regmap, some cleanups, fixes and: - Improved node coalescing for rbtree, reducing memory usage and improving performance during syncs. - Support for registering multiple register patches. - A quirk for handling interrupts that need to be clear when masked in regmap-irq" * tag 'regmap-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: rbtree: Make cache_present bitmap per node regmap: rbtree: Reduce number of nodes, take 2 regmap: rbtree: Simplify adjacent node look-up regmap: debugfs: Fix continued read from registers file regcache-rbtree: Fix reg_stride != 1 regmap: Allow multiple patches to be registered regmap: regcache: allow read-only regs to be cached regmap: fix regcache_reg_present() for empty cache regmap: core: allow a virtual range to cover its own data window regmap: irq: document mask/wake_invert flags regmap: irq: make flags bool and put them in a bitfield regmap: irq: Allow to acknowledge masked interrupts during initialization regmap: Provide __acquires/__releases annotations
| * Merge remote-tracking branch 'regmap/topic/irq' into regmap-nextMark Brown2013-08-311-3/+7
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| | * regmap: irq: document mask/wake_invert flagsPhilipp Zabel2013-07-241-0/+2
| | | | | | | | | | | | | | | Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * regmap: irq: make flags bool and put them in a bitfieldPhilipp Zabel2013-07-241-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | This patch makes mask/wake_invert bool and puts all flags into a bitfield for consistency and to save some space. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
| | * regmap: irq: Allow to acknowledge masked interrupts during initializationPhilipp Zabel2013-07-231-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case the hardware interrupt mask register does not prevent the chip level irq from being asserted by the corresponding interrupt status bit, already set interrupt bits should to be cleared once after masking them during initialization. Add a flag to let drivers enable this behavior. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
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