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regmap: Allow longer flag masks for read and write

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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 <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Tony Lindgren 2016-09-15 13:56:10 -07:00 • committed by Mark Brown
parent 29b4817d40
commit f50e38c996
3 changed files with 25 additions and 19 deletions
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8
include/linux/regmap.h
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@ -241,9 +241,9 @@ typedef void (*regmap_unlock)(void *);
* register cache support).
* @num_reg_defaults: Number of elements in reg_defaults.
*
* @read_flag_mask: Mask to be set in the top byte of the register when doing
* @read_flag_mask: Mask to be set in the top bytes of the register when doing
* a read.
* @write_flag_mask: Mask to be set in the top byte of the register when doing
* @write_flag_mask: Mask to be set in the top bytes of the register when doing
* a write. If both read_flag_mask and write_flag_mask are
* empty the regmap_bus default masks are used.
* @use_single_rw: If set, converts the bulk read and write operations into
@ -299,8 +299,8 @@ struct regmap_config {
const void *reg_defaults_raw;
unsigned int num_reg_defaults_raw;
u8 read_flag_mask;
u8 write_flag_mask;
unsigned long read_flag_mask;
unsigned long write_flag_mask;
bool use_single_rw;
bool can_multi_write;