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/base/regmap/regmap.c

@@ -762,8 +762,8 @@ struct regmap *__regmap_init(struct device *dev,
 		map->reg_stride_order = ilog2(map->reg_stride);
 	else
 		map->reg_stride_order = -1;
-	map->use_single_read = config->use_single_rw || !bus || !bus->read;
+	map->use_single_read = config->use_single_read || !bus || !bus->read;
-	map->use_single_write = config->use_single_rw || !bus || !bus->write;
+	map->use_single_write = config->use_single_write || !bus || !bus->write;
 	map->can_multi_write = config->can_multi_write && bus && bus->write;
 	if (bus) {
 		map->max_raw_read = bus->max_raw_read;

drivers/edac/altera_edac.c

@@ -599,7 +599,8 @@ static const struct regmap_config s10_sdram_regmap_cfg = {
 	.volatile_reg = s10_sdram_volatile_reg,
 	.reg_read = s10_protected_reg_read,
 	.reg_write = s10_protected_reg_write,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int altr_s10_sdram_probe(struct platform_device *pdev)

drivers/hwmon/lm75.c

@@ -254,7 +254,8 @@ static const struct regmap_config lm75_regmap_config = {
 	.volatile_reg = lm75_is_volatile_reg,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static void lm75_remove(void *data)

drivers/hwmon/lm95245.c

@@ -541,7 +541,8 @@ static const struct regmap_config lm95245_regmap_config = {
 	.writeable_reg = lm95245_is_writeable_reg,
 	.volatile_reg = lm95245_is_volatile_reg,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const u32 lm95245_chip_config[] = {

drivers/hwmon/tmp102.c

@@ -212,7 +212,8 @@ static const struct regmap_config tmp102_regmap_config = {
 	.volatile_reg = tmp102_is_volatile_reg,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int tmp102_probe(struct i2c_client *client,

drivers/hwmon/tmp108.c

@@ -345,7 +345,8 @@ static const struct regmap_config tmp108_regmap_config = {
 	.volatile_reg = tmp108_is_volatile_reg,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int tmp108_probe(struct i2c_client *client,

drivers/iio/light/apds9960.c

@@ -206,7 +206,8 @@ static const struct regmap_config apds9960_regmap_config = {
 	.name = APDS9960_REGMAP_NAME,
 	.reg_bits = 8,
 	.val_bits = 8,
-	.use_single_rw = 1,
+	.use_single_read = true,
+	.use_single_write = true,
 
 	.volatile_table = &apds9960_volatile_table,
 	.precious_table = &apds9960_precious_table,

drivers/iio/light/max44000.c

@@ -473,17 +473,18 @@ static bool max44000_precious_reg(struct device *dev, unsigned int reg)
 }
 
 static const struct regmap_config max44000_regmap_config = {
-	.reg_bits	= 8,
+	.reg_bits		= 8,
-	.val_bits	= 8,
+	.val_bits		= 8,
 
-	.max_register	= MAX44000_REG_PRX_DATA,
+	.max_register		= MAX44000_REG_PRX_DATA,
-	.readable_reg	= max44000_readable_reg,
+	.readable_reg		= max44000_readable_reg,
-	.writeable_reg	= max44000_writeable_reg,
+	.writeable_reg		= max44000_writeable_reg,
-	.volatile_reg	= max44000_volatile_reg,
+	.volatile_reg		= max44000_volatile_reg,
-	.precious_reg	= max44000_precious_reg,
+	.precious_reg		= max44000_precious_reg,
 
-	.use_single_rw	= 1,
+	.use_single_read	= true,
-	.cache_type	= REGCACHE_RBTREE,
+	.use_single_write	= true,
+	.cache_type		= REGCACHE_RBTREE,
 };
 
 static irqreturn_t max44000_trigger_handler(int irq, void *p)

drivers/iio/temperature/mlx90632.c

@@ -140,7 +140,8 @@ static const struct regmap_config mlx90632_regmap = {
 	.rd_table = &mlx90632_readable_regs_tbl,
 	.wr_table = &mlx90632_writeable_regs_tbl,
 
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.reg_format_endian = REGMAP_ENDIAN_BIG,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
 	.cache_type = REGCACHE_RBTREE,

drivers/input/touchscreen/tsc200x-core.c

@@ -68,7 +68,8 @@ const struct regmap_config tsc200x_regmap_config = {
 	.read_flag_mask = TSC200X_REG_READ,
 	.write_flag_mask = TSC200X_REG_PND0,
 	.wr_table = &tsc200x_writable_table,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 EXPORT_SYMBOL_GPL(tsc200x_regmap_config);
 

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[] = {

drivers/regulator/ltc3589.c

@@ -404,7 +404,8 @@ static const struct regmap_config ltc3589_regmap_config = {
 	.max_register = LTC3589_L2DTV2,
 	.reg_defaults = ltc3589_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(ltc3589_reg_defaults),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.cache_type = REGCACHE_RBTREE,
 };
 

drivers/regulator/ltc3676.c

@@ -321,7 +321,8 @@ static const struct regmap_config ltc3676_regmap_config = {
 	.readable_reg = ltc3676_readable_reg,
 	.volatile_reg = ltc3676_volatile_reg,
 	.max_register = LTC3676_CLIRQ,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.cache_type = REGCACHE_RBTREE,
 };
 

include/linux/regmap.h

@@ -315,9 +315,12 @@ typedef void (*regmap_unlock)(void *);
  *                   masks are used.
  * @zero_flag_mask: If set, read_flag_mask and write_flag_mask are used even
  *                   if they are both empty.
- * @use_single_rw: If set, converts the bulk read and write operations into
+ * @use_single_read: If set, converts the bulk read operation into a series of
- *		    a series of single read and write operations. This is useful
+ *                   single read operations. This is useful for a device that
- *		    for device that does not support bulk read and write.
+ *                   does not support  bulk read.
+ * @use_single_write: If set, converts the bulk write operation into a series of
+ *                    single write operations. This is useful for a device that
+ *                    does not support bulk write.
  * @can_multi_write: If set, the device supports the multi write mode of bulk
  *                   write operations, if clear multi write requests will be
  *                   split into individual write operations
@@ -380,7 +383,8 @@ struct regmap_config {
 	unsigned long write_flag_mask;
 	bool zero_flag_mask;
 
-	bool use_single_rw;
+	bool use_single_read;
+	bool use_single_write;
 	bool can_multi_write;
 
 	enum regmap_endian reg_format_endian;

sound/hda/hdac_regmap.c

@@ -359,7 +359,8 @@ static const struct regmap_config hda_regmap_cfg = {
 	.cache_type = REGCACHE_RBTREE,
 	.reg_read = hda_reg_read,
 	.reg_write = hda_reg_write,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 /**

sound/soc/codecs/cs35l33.c

@@ -857,7 +857,8 @@ static const struct regmap_config cs35l33_regmap = {
 	.readable_reg = cs35l33_readable_register,
 	.writeable_reg = cs35l33_writeable_register,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int __maybe_unused cs35l33_runtime_resume(struct device *dev)

sound/soc/codecs/cs35l35.c

@@ -1105,7 +1105,8 @@ static struct regmap_config cs35l35_regmap = {
 	.readable_reg = cs35l35_readable_register,
 	.precious_reg = cs35l35_precious_register,
 	.cache_type = REGCACHE_RBTREE,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static irqreturn_t cs35l35_irq(int irq, void *data)

sound/soc/codecs/cs43130.c

@@ -2362,7 +2362,9 @@ static const struct regmap_config cs43130_regmap = {
 	.precious_reg		= cs43130_precious_register,
 	.volatile_reg		= cs43130_volatile_register,
 	.cache_type		= REGCACHE_RBTREE,
-	.use_single_rw		= true, /* needed for regcache_sync */
+	/* needed for regcache_sync */
+	.use_single_read	= true,
+	.use_single_write	= true,
 };
 
 static u16 const cs43130_dc_threshold[CS43130_DC_THRESHOLD] = {

sound/soc/codecs/es8328.c

@@ -824,7 +824,8 @@ const struct regmap_config es8328_regmap_config = {
 	.val_bits	= 8,
 	.max_register	= ES8328_REG_MAX,
 	.cache_type	= REGCACHE_RBTREE,
-	.use_single_rw	= true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 EXPORT_SYMBOL_GPL(es8328_regmap_config);
 

sound/soc/codecs/rt1305.c

@@ -963,7 +963,8 @@ static const struct regmap_config rt1305_regmap = {
 	.num_reg_defaults = ARRAY_SIZE(rt1305_reg),
 	.ranges = rt1305_ranges,
 	.num_ranges = ARRAY_SIZE(rt1305_ranges),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 #if defined(CONFIG_OF)

sound/soc/codecs/rt5514.c

@@ -1201,7 +1201,8 @@ static const struct regmap_config rt5514_regmap = {
 	.cache_type = REGCACHE_RBTREE,
 	.reg_defaults = rt5514_reg,
 	.num_reg_defaults = ARRAY_SIZE(rt5514_reg),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const struct i2c_device_id rt5514_i2c_id[] = {

sound/soc/codecs/rt5616.c

@@ -1313,7 +1313,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5616 = {
 static const struct regmap_config rt5616_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = RT5616_DEVICE_ID + 1 + (ARRAY_SIZE(rt5616_ranges) *
 					       RT5616_PR_SPACING),
 	.volatile_reg = rt5616_volatile_register,

sound/soc/codecs/rt5640.c

@@ -2704,7 +2704,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5640 = {
 static const struct regmap_config rt5640_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 
 	.max_register = RT5640_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5640_ranges) *
 					       RT5640_PR_SPACING),

sound/soc/codecs/rt5645.c

@@ -3559,7 +3559,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5645 = {
 static const struct regmap_config rt5645_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = RT5645_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5645_ranges) *
 					       RT5645_PR_SPACING),
 	.volatile_reg = rt5645_volatile_register,
@@ -3575,7 +3576,8 @@ static const struct regmap_config rt5645_regmap = {
 static const struct regmap_config rt5650_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = RT5645_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5645_ranges) *
 					       RT5645_PR_SPACING),
 	.volatile_reg = rt5645_volatile_register,
@@ -3592,7 +3594,8 @@ static const struct regmap_config temp_regmap = {
 	.name="nocache",
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = RT5645_VENDOR_ID2 + 1,
 	.cache_type = REGCACHE_NONE,
 };

sound/soc/codecs/rt5651.c

@@ -2124,7 +2124,8 @@ static const struct regmap_config rt5651_regmap = {
 	.num_reg_defaults = ARRAY_SIZE(rt5651_reg),
 	.ranges = rt5651_ranges,
 	.num_ranges = ARRAY_SIZE(rt5651_ranges),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 #if defined(CONFIG_OF)

sound/soc/codecs/rt5660.c

@@ -1217,7 +1217,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5660 = {
 static const struct regmap_config rt5660_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 
 	.max_register = RT5660_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5660_ranges) *
 					       RT5660_PR_SPACING),

sound/soc/codecs/rt5663.c

@@ -3252,7 +3252,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5663 = {
 static const struct regmap_config rt5663_v2_regmap = {
 	.reg_bits = 16,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = 0x07fa,
 	.volatile_reg = rt5663_v2_volatile_register,
 	.readable_reg = rt5663_v2_readable_register,
@@ -3264,7 +3265,8 @@ static const struct regmap_config rt5663_v2_regmap = {
 static const struct regmap_config rt5663_regmap = {
 	.reg_bits = 16,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = 0x03f3,
 	.volatile_reg = rt5663_volatile_register,
 	.readable_reg = rt5663_readable_register,
@@ -3277,7 +3279,8 @@ static const struct regmap_config temp_regmap = {
 	.name = "nocache",
 	.reg_bits = 16,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = 0x03f3,
 	.cache_type = REGCACHE_NONE,
 };

sound/soc/codecs/rt5665.c

@@ -4633,7 +4633,8 @@ static const struct regmap_config rt5665_regmap = {
 	.cache_type = REGCACHE_RBTREE,
 	.reg_defaults = rt5665_reg,
 	.num_reg_defaults = ARRAY_SIZE(rt5665_reg),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const struct i2c_device_id rt5665_i2c_id[] = {

sound/soc/codecs/rt5668.c

@@ -2375,7 +2375,8 @@ static const struct regmap_config rt5668_regmap = {
 	.cache_type = REGCACHE_RBTREE,
 	.reg_defaults = rt5668_reg,
 	.num_reg_defaults = ARRAY_SIZE(rt5668_reg),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const struct i2c_device_id rt5668_i2c_id[] = {

sound/soc/codecs/rt5670.c

@@ -2814,7 +2814,8 @@ static const struct snd_soc_component_driver soc_component_dev_rt5670 = {
 static const struct regmap_config rt5670_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 	.max_register = RT5670_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5670_ranges) *
 					       RT5670_PR_SPACING),
 	.volatile_reg = rt5670_volatile_register,

sound/soc/codecs/rt5682.c

@@ -2419,7 +2419,8 @@ static const struct regmap_config rt5682_regmap = {
 	.cache_type = REGCACHE_RBTREE,
 	.reg_defaults = rt5682_reg,
 	.num_reg_defaults = ARRAY_SIZE(rt5682_reg),
-	.use_single_rw = true,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static const struct i2c_device_id rt5682_i2c_id[] = {