regmap: Allow longer flag masks for read and write

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>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 2c12cc5af744..9adc7b21903d 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -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;