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| * | | | | regmap: debugfs: Fix reading in register field unitsDimitris Papastamos2013-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the moment, if the length of the register field format is N bytes, we can only get anything meaningful back to userspace by providing a buffer that is N + 2 bytes large. Fix this so we that we only need to provide a buffer of N bytes. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: regmap: avoid spurious warning in regmap_read_debugfsRussell King2013-01-27
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Gcc warns about the case where regmap_read_debugfs tries to walk an empty map->debugfs_off_cache list, which would results in uninitialized variable getting returned, if we hadn't checked the same condition just before that. After an originally suggested inferior patch from Arnd Bergmann, this is the solution that Russell King came up with, sidestepping the problem by merging the error case for an empty list with the normal path. Without this patch, building mxs_defconfig results in: drivers/base/regmap/regmap-debugfs.c: In function 'regmap_read_debugfs': drivers/base/regmap/regmap-debugfs.c:147:9: : warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] Reported-by: Vincent Stehle <v-stehle@ti.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | | | | Merge remote-tracking branch 'regmap/topic/async' into regmap-nextMark Brown2013-02-14
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| * | | | | regmap: spi: Handle allocation failures gracefullyMark Brown2013-02-05
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: Export regmap_async_complete()Mark Brown2013-02-05
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: Export regmap_async_complete_cbAxel Lin2013-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes below build error when CONFIG_REGMAP=y && CONFIG_REGMAP_SPI=m ERROR: "regmap_async_complete_cb" [drivers/base/regmap/regmap-spi.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: include linux/sched.h to fix buildStephen Warren2013-02-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes: drivers/base/regmap/regmap.c: In function 'regmap_async_complete_cb': drivers/base/regmap/regmap.c:1656:3: error: 'TASK_NORMAL' undeclared (first use in this function) drivers/base/regmap/regmap.c:1656:3: note: each undeclared identifier is reported only once for each function it appears in drivers/base/regmap/regmap.c: In function 'regmap_async_complete': drivers/base/regmap/regmap.c:1688:2: error: 'TASK_UNINTERRUPTIBLE' undeclared (first use in this function) drivers/base/regmap/regmap.c:1688:2: error: implicit declaration of function 'schedule' An alternative might be to adjust linux/wait.h to include linux/sched.h, but since that hasn't been done before, I assume we're consciously avoiding doing that. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: spi: Support asynchronous I/O for SPIMark Brown2013-01-29
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | | regmap: Add asynchronous I/O supportMark Brown2013-01-29
| | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some use cases like firmware download can transfer a lot of data in quick succession. With high speed buses these use cases can benefit from having multiple transfers scheduled at once since this allows the bus to minimise the delay between transfers. Support this by adding regmap_raw_write_async(), allowing raw transfers to be scheduled, and regmap_async_complete() to wait for them to finish. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | regmap: Add provisions to have user-defined write operationAndrey Smirnov2013-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit is a preparatory commit to provide "no-bus" configuration option for regmap API. It adds necessary plumbing needed to have the ability to provide user define register write function. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | regmap: Add provisions to have user-defined read operationAndrey Smirnov2013-01-14
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit is a preparatory commit to provide "no-bus" configuration option for regmap API. It adds necessary plumbing needed to have the ability to provide user define register read function. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | | | Merge remote-tracking branch 'regmap/topic/24bit' into regmap-nextMark Brown2013-02-14
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| * | | regmap: Add support for 24 bit wide register addressesLars-Peter Clausen2013-01-12
| |/ / | | | | | | | | | | | | | | | | | | | | | Since regmap already has support for formatting 24 bit wide values, so adding support for 24 bit wide registers is pretty much straight forward. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | | Merge remote-tracking branch 'regmap/fix/debugfs' into tmpMark Brown2013-01-24
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| * | | regmap: debugfs: Fix seeking from the cacheMark Brown2013-01-17
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | We don't want to bomb out early if we failed to get the cache any more, just soldier on instead and we won't get confused and always return the first block. Reported-by: Philipp Zabel <p.zabel@pengutronix.de Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* / | regmap: fix small typo in regmap_bulk_write commentNestor Ovroy2013-01-22
|/ / | | | | | | | | Signed-off-by: Nestor Ovroy <novroy@riseup.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: debugfs: Make sure we store the last entry in the offset cacheMark Brown2013-01-08
| | | | | | | | Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: debugfs: Ensure a correct return value for empty cachesMark Brown2013-01-08
| | | | | | | | | | | | This should never happen in the real world. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: debugfs: Discard the cache if we fail to allocate an entryMark Brown2013-01-08
| | | | | | | | | | | | | | | | Rather than trying to soldier on with a partially allocated cache just throw the cache away and pretend we don't have one in case we can get a full cache next time around. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: debugfs: Fix check for block start in cached seeksMark Brown2013-01-08
| | | | | | | | | | | | | | Check for the block we were asked to start from, not the position we're in. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: debugfs: Fix attempts to read nonexistant register blocksMark Brown2013-01-08
|/ | | | | | | | Return the start of the last block we tried to read rather than a position, and also make sure we update the byte position while we're at it. Without this reads that go into nonexistant areas get confused. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* Merge remote-tracking branch 'regmap/topic/type' into regmap-nextMark Brown2012-12-11
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| * regmap: silence GCC warningPaul Bolle2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Building regmap.o triggers this GCC warning: drivers/base/regmap/regmap.c: In function ‘regmap_raw_read’: drivers/base/regmap/regmap.c:1172:6: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized] Long story short: Jakub Jelinek pointed out that there is a type mismatch between 'num' in regmap_volatile_range() and 'val_count' in regmap_raw_read(). And indeed, converting 'num' to the type of 'val_count' (ie, size_t) makes this warning go away. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | Merge remote-tracking branch 'regmap/topic/table' into regmap-nextMark Brown2012-12-11
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| * | regmap: introduce tables for readable/writeable/volatile/precious checksDavide Ciminaghi2012-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many of the regmap enabled drivers implementing one or more of the readable, writeable, volatile and precious methods use the same code pattern: return ((reg >= X && reg <= Y) || (reg >= W && reg <= Z) || ...) Switch to a data driven approach, using tables to describe readable/writeable/volatile and precious registers ranges instead. The table based check can still be overridden by passing the usual function pointers via struct regmap_config. Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | Merge branch 'topic/lock' of ↵Mark Brown2012-11-21
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into regmap-table
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| *-. \ \ Merge branches 'topic/core' and 'topic/range' of ↵Mark Brown2012-11-21
| |\ \ \ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into regmap-table
* | \ \ \ \ Merge remote-tracking branch 'regmap/topic/lock' into regmap-nextMark Brown2012-12-11
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| * | | | | regmap: make lock/unlock functions customizableDavide Ciminaghi2012-10-17
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is sometimes convenient for a regmap user to override the standard regmap lock/unlock functions with custom functions. For instance this can be useful in case an already existing spinlock or mutex has to be used for locking a set of registers instead of the internal regmap spinlock/mutex. Note that the fast_io field of struct regmap_bus is ignored in case custom locking functions are used. Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | | | | Merge remote-tracking branch 'regmap/topic/domain' into regmap-nextMark Brown2012-12-11
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| * | | | | regmap: irq: Allow users to retrieve the irq_domainMark Brown2012-10-15
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is useful for integration with other subsystems, especially MFD, and provides an alternative API for users that request their own IRQs. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | | | | Merge remote-tracking branch 'regmap/topic/debugfs' into regmap-nextMark Brown2012-12-11
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| * | | | regmap: debugfs: Cache offsets of valid regions for dumpMark Brown2012-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid doing a linear scan of the entire register map for each read() of the debugfs register dump by recording the offsets where valid registers exist when we first read the registers file. This assumes the set of valid registers never changes, if this is not the case invalidation of the cache will be required. This could be further improved for large blocks of contiguous registers by calculating the register we will read from within the block - currently we do a linear scan of the block. An rbtree may also be worthwhile. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | regmap: debugfs: Factor out initial seekMark Brown2012-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for doing things a bit more quickly than a linear scan factor out the initial seek from the debugfs register dump. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | | regmap: debugfs: Avoid overflows for very small readsMark Brown2012-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If count is less than the size of a register then we may hit integer wraparound when trying to move backwards to check if we're still in the buffer. Instead move the position forwards to check if it's still in the buffer, we are unlikely to be able to allocate a buffer sufficiently big to overflow here. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
| * | | | regmap: Cache register and value sizes for debugfsMark Brown2012-12-06
| | |_|/ | |/| | | | | | | | | | | | | | | | | | No point in calculating them every time. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Fix printing of size_t variableFabio Estevam2012-10-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | val_bytes is of 'size_t', so it should be printed as '%zu'. Fixes the following build warning on x86: drivers/base/regmap/regmap.c:872:4: warning: format '%d' expects argument of type 'int', but argument 5 has type 'size_t' [-Wformat] Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Split raw writes that cross window boundariesMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a block write covers a paged memory region and crosses a window boundary then rather than failing the write split the transfer up into multiple writes, making the whole process more transparent for drivers. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Make return code checks consistentMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The range code was written to check for return codes less than zero as errors but throughout the rest of the API return codes not equal to zero are errors. Change all these checks to match the house style. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Factor range lookup out of page selectionMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This will support a subsequent update to allow bulk writes to cross window boundaries. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Provide debugfs read of register rangesMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If a register range is named then provide a debugfs file showing the contents of the range separately. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Factor out debugfs register readMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | This will allow the use of the same code for reading register ranges. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Allow ranges to be namedMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | For more useful diagnostics. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: When we sanity check during range adds say what errors we findMark Brown2012-10-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than just returning a single error code for every possible thing we can notice print an error message saying what the problem was. This makes it very much easier to figure out what's wrong and fix it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| * | | regmap: Rename n_ranges to num_rangesMark Brown2012-10-15
| |/ / | | | | | | | | | | | | | | | | | | | | | This makes things consistent with the rest of the API and is actually what the documentation says. We don't currently have any in tree users so low cost. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | / regmap: core: Report registers in hex when we can't cacheMark Brown2012-10-30
| |/ |/| | | | | | | | | | | This seems to be the most common way of reporting register numbers, it's certainly what we do for trace. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
* | regmap: select REGMAP if REGMAP_MMIO and REGMAP_IRQ enabledDong Aisheng2012-10-17
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The regmap_mmio and regmap_irq depend on regmap core, if not select, we may not compile regmap core and meet compiling errors as follows if REGMAP_MMIO is selected by client drivers: drivers/mfd/syscon.c:94:15: error: variable 'syscon_regmap_config' has initializer but incomplete type drivers/mfd/syscon.c:95:2: error: unknown field 'reg_bits' specified in initializer drivers/mfd/syscon.c:95:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:95:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c:96:2: error: unknown field 'val_bits' specified in initializer drivers/mfd/syscon.c:96:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:96:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c:97:2: error: unknown field 'reg_stride' specified in initializer drivers/mfd/syscon.c:97:2: warning: excess elements in struct initializer [enabled by default] drivers/mfd/syscon.c:97:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default] drivers/mfd/syscon.c: In function 'syscon_probe': drivers/mfd/syscon.c:124:2: error: invalid use of undefined type 'struct regmap_config' drivers/mfd/syscon.c:125:2: error: implicit declaration of function 'devm_regmap_init_mmio' [-Werror=implicit-function-declaration] drivers/mfd/syscon.c:125:17: warning: assignment makes pointer from integer without a cast [enabled by default] cc1: some warnings being treated as errors drivers/mfd/Kconfig: config MFD_SYSCON bool "System Controller Register R/W Based on Regmap" depends on OF select REGMAP_MMIO help Select this option to enable accessing system control registers via regmap. Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
*-. Merge remote-tracking branches 'regmap/topic/cache' and 'regmap/topic/irq' ↵Mark Brown2012-09-22
|\ \ | | | | | | | | | into regmap-next
| | * regmap: no need primary handler for nested irqYunfan Zhang2012-09-09
| | | | | | | | | | | | | | | | | | | | | | | | The primary handler will NOT be called if the interrupt nests into another interrupt thread. Remove it to avoid confusing. Signed-off-by: Yunfan Zhang <yfzhang@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| | * regmap: irq: Add mask invert flag for enable registerXiaofan Tian2012-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, regmap will write 1 to mask_base to mask an interrupt and write 0 to unmask it. But some chips do not have an interrupt mask register, and only have interrupt enable register. Then we should write 0 to disable interrupt and 1 to enable. So add an mask_invert flag to handle this. If it is not set, behavior is same as previous. If set it to 1, the mask value will be inverted before written to mask_base Signed-off-by: Xiaofan Tian <tianxf@marvell.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
generated by cgit v1.2.3 (git 2.25.1) at 2026-07-13 20:46:36 +0000