diff options
| author | Guo Zeng <Guo.Zeng@csr.com> | 2015-09-17 05:23:20 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-09-17 11:46:09 +0100 |
| commit | 7b7d1968e4c8d8392e8e63906d45d0bcad079037 (patch) | |
| tree | 7fe40619a35b3a075523b799b4b47f46c667a4e2 /include/linux/regmap.h | |
| parent | 6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff) | |
| download | lwn-7b7d1968e4c8d8392e8e63906d45d0bcad079037.tar.gz lwn-7b7d1968e4c8d8392e8e63906d45d0bcad079037.zip | |
regmap: irq: add support for chips who have separate unmask registers
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>
Diffstat (limited to 'include/linux/regmap.h')
| -rw-r--r-- | include/linux/regmap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 8fc0bfd8edc4..f98fe9f5faa2 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -800,6 +800,8 @@ struct regmap_irq { * * @status_base: Base status register address. * @mask_base: Base mask register address. + * @unmask_base: Base unmask register address. for chips who have + * separate mask and unmask registers * @ack_base: Base ack address. If zero then the chip is clear on read. * Using zero value is possible with @use_ack bit. * @wake_base: Base address for wake enables. If zero unsupported. @@ -820,6 +822,7 @@ struct regmap_irq_chip { unsigned int status_base; unsigned int mask_base; + unsigned int unmask_base; unsigned int ack_base; unsigned int wake_base; unsigned int irq_reg_stride; |