kernel/linux.git/drivers/base/regmap, branch v4.10.2

regmap: cache: Remove unused 'blksize' variable

2016-11-25T13:01:36+00:00

Commit 2cbbb579bcbe ("regmap: Add the LZO cache support") introduced 'blksize' in regcache_lzo_read() and regcache_lzo_write(), that is set but not used. Compiling with W=1 gives the following warnings, fix them. drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_read’: drivers/base/regmap/regcache-lzo.c:239:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable] size_t blksize, tmp_dst_len; ^ drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_write’: drivers/base/regmap/regcache-lzo.c:278:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable] size_t blksize, tmp_dst_len; ^ These are harmless warnings and are only being fixed to reduce the noise with W=1 in the kernel. Fixes: 2cbbb579bcbe ("regmap: Add the LZO cache support") Cc: Dimitris Papastamos Cc: Mark Brown Signed-off-by: Kirtika Ruchandani Signed-off-by: Mark Brown

Merge remote-tracking branches 'regmap/topic/core' and 'regmap/topic/debugfs' into regmap-next

2016-10-04T03:17:12+00:00

Merge tag 'regmap-fix-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

2016-09-23T18:50:49+00:00

Pull regmap fix from Mark Brown: "A fix for an issue with double locking that was introduced earlier this release. I'd missed in review that we were already in a locked region when trying to drop part of the cache" * tag 'regmap-fix-v4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: fix deadlock on _regmap_raw_write() error path

regmap: fix deadlock on _regmap_raw_write() error path

2016-09-22T10:24:22+00:00

Commit 815806e39bf6 ("regmap: drop cache if the bus transfer error") added a call to regcache_drop_region() to error path in _regmap_raw_write(). However that path runs with regmap lock taken, and regcache_drop_region() tries to re-take it, causing a deadlock. Fix that by calling map->cache_ops->drop() directly. Signed-off-by: Nikita Yushchenko Signed-off-by: Mark Brown

regmap: Add missing little endian functions

2016-09-16T11:06:27+00:00

This with the longer read and write masks allow supporting more exotic devices. For example a little endian SPI device: static const struct regmap_config foo_regmap_config = { .reg_bits = 16, .reg_stride = 4, .val_bits = 16, .write_flag_mask = 0x8000, .reg_format_endian = REGMAP_ENDIAN_LITTLE, .val_format_endian = REGMAP_ENDIAN_LITTLE, ... }; Signed-off-by: Tony Lindgren Signed-off-by: Mark Brown

regmap: Allow longer flag masks for read and write

2016-09-16T11:06:24+00:00

We currently only support masking the top bit for read and write flags. Let's make the mask unsigned long and mask the bytes based on the configured register length to make things more generic. This allows using regmap for more exotic combinations like SPI devices that need little endian addressing. Signed-off-by: Tony Lindgren Signed-off-by: Mark Brown

Merge remote-tracking branch 'regmap/fix/rbtree' into regmap-linus

2016-09-03T11:10:09+00:00

regmap: drop cache if the bus transfer error

2016-08-18T10:09:12+00:00

regmap_write ->_regmap_raw_write -->regcache_write first and than use map->bus->write to wirte i2c or spi But if the i2c or spi transfer failed, But the cache is updated, So if I use regmap_read will get the cache data which is not the real register value. Signed-off-by: Elaine Zhang Signed-off-by: Mark Brown

regmap: debugfs: Add support for dumping write only device registers

2016-08-09T12:43:33+00:00

Add support for dumping write only device registers in debugfs. This is useful for audio codecs that have write only registers (like WM8731). The logic that decides if a value can be printed is moved to regmap_printable() function to allow for easier future updates. Signed-off-by: Cristian Birsan Signed-off-by: Mark Brown

regmap: Add a function to check if a regmap register is cached

2016-08-09T12:43:33+00:00

Add a function to check if a regmap register is cached. This will be used in debugfs to dump the cached values of write only registers. Signed-off-by: Cristian Birsan Signed-off-by: Mark Brown