regmap: split up regmap_config.use_single_rw

Split regmap_config.use_single_rw into use_single_read and
use_single_write. This change enables drivers of devices which only
support bulk operations in one direction to use the regmap_bulk_*()
functions for both directions and have their bulk operation split into
single operations only when necessary.

Update all struct regmap_config instances where use_single_rw==true to
instead set both use_single_read and use_single_write. No attempt was
made to evaluate whether it is possible to set only one of
use_single_read or use_single_write.

Signed-off-by: David Frey <dpfrey@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/mfd/altera-a10sr.c

@@ -108,7 +108,8 @@ static const struct regmap_config altr_a10sr_regmap_config = {
 
 	.cache_type = REGCACHE_NONE,
 
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.read_flag_mask = 1,
 	.write_flag_mask = 0,
 

drivers/mfd/da9052-spi.c

@@ -46,7 +46,8 @@ static int da9052_spi_probe(struct spi_device *spi)
 	config.reg_bits = 7;
 	config.pad_bits = 1;
 	config.val_bits = 8;
-	config.use_single_rw = 1;
+	config.use_single_read = true;
+	config.use_single_write = true;
 
 	da9052->regmap = devm_regmap_init_spi(spi, &config);
 	if (IS_ERR(da9052->regmap)) {

drivers/mfd/mc13xxx-spi.c

@@ -57,7 +57,8 @@ static const struct regmap_config mc13xxx_regmap_spi_config = {
 	.max_register = MC13XXX_NUMREGS,
 
 	.cache_type = REGCACHE_NONE,
-	.use_single_rw = 1,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int mc13xxx_spi_read(void *context, const void *reg, size_t reg_size,

drivers/mfd/twl6040.c

@@ -613,7 +613,8 @@ static const struct regmap_config twl6040_regmap_config = {
 	.writeable_reg = twl6040_writeable_reg,
 
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const struct regmap_irq twl6040_irqs[] = {