mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 01:49:36 +00:00
baa8055de0
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>
28 lines
778 B
C
28 lines
778 B
C
/* MFD cell driver data for the DS1WM driver
|
|
*
|
|
* to be defined in the MFD device that is
|
|
* using this driver for one of his sub devices
|
|
*/
|
|
|
|
struct ds1wm_driver_data {
|
|
int active_high;
|
|
int clock_rate;
|
|
/* in milliseconds, the amount of time to
|
|
* sleep following a reset pulse. Zero
|
|
* should work if your bus devices recover
|
|
* time respects the 1-wire spec since the
|
|
* ds1wm implements the precise timings of
|
|
* a reset pulse/presence detect sequence.
|
|
*/
|
|
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
|
|
*/
|
|
unsigned int bus_shift;
|
|
};
|