diff options
| author | Johannes Poehlmann <johannes.poehlmann@izt-labs.de> | 2017-07-25 13:27:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 17:20:01 +0200 |
| commit | baa8055de0293a91f87bef5f32296d9ddcba9c56 (patch) | |
| tree | 6311d7ab031966b73252172e2dc688fa1a2c980e /include/linux/mfd | |
| parent | 242b476f821b055ed0fb70a8eb6defa85baada9c (diff) | |
w1: ds1wm: make endian clean and use standard io memory accessors
o Make endian clean, make HW-endianness configurable.
o Use ioread*, iowrite* instead of __raw_readb,__raw_writeb
to also use memory-barriers when accessing HW-registers.
We do not want reordering to happen here.
Both changes are tightly coupled, so I do them in one patch
Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/mfd')
| -rw-r--r-- | include/linux/mfd/ds1wm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mfd/ds1wm.h b/include/linux/mfd/ds1wm.h index 79a01e8dc83f..2227c6a75d84 100644 --- a/include/linux/mfd/ds1wm.h +++ b/include/linux/mfd/ds1wm.h @@ -16,6 +16,11 @@ struct ds1wm_driver_data { */ unsigned int reset_recover_delay; + /* Say 1 here for big endian Hardware + * (only relevant with bus-shift > 0 + */ + bool is_hw_big_endian; + /* left shift of register number to get register address offsett. * Only 0,1,2 allowed for 8,16 or 32 bit bus width respectively */ |