ASoC: cs35l56: Use reg_base to offset addresses on SoundWire

Set the reg_base member of regmap_config for SoundWire so that
the regmap core will apply the 0x8000 offset to addresses, instead
of doing it within our low-level regmap read/write callbacks.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20260519135435.479949-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: rfvirgil

sound/soc/codecs/cs35l56-sdw.c

@@ -59,8 +59,6 @@ static int cs35l56_sdw_slow_read(struct sdw_slave *peripheral, unsigned int reg,
 {
 	int ret, i;
 
-	reg += CS35L56_SDW_ADDR_OFFSET;
-
 	for (i = 0; i < val_size; i += sizeof(u32)) {
 		/* Poll for bus bridge idle */
 		ret = cs35l56_sdw_poll_mem_status(peripheral,
@@ -123,11 +121,9 @@ static int cs35l56_sdw_read(void *context, const void *reg_buf,
 
 	reg = le32_to_cpu(*(const __le32 *)reg_buf);
 
-	if (cs35l56_is_otp_register(reg))
+	if (cs35l56_is_otp_register(reg - CS35L56_SDW_ADDR_OFFSET))
 		return cs35l56_sdw_slow_read(peripheral, reg, buf8, val_size);
 
-	reg += CS35L56_SDW_ADDR_OFFSET;
-
 	if (val_size == 4)
 		return cs35l56_sdw_read_one(peripheral, reg, val_buf);
 
@@ -186,7 +182,6 @@ static int cs35l56_sdw_gather_write(void *context,
 	int ret;
 
 	reg = le32_to_cpu(*(const __le32 *)reg_buf);
-	reg += CS35L56_SDW_ADDR_OFFSET;
 
 	if (val_size == 4)
 		return cs35l56_sdw_write_one(peripheral, reg, src_be);

sound/soc/codecs/cs35l56-shared.c

@@ -1880,6 +1880,7 @@ EXPORT_SYMBOL_NS_GPL(cs35l56_regmap_spi, "SND_SOC_CS35L56_SHARED");
 
 const struct regmap_config cs35l56_regmap_sdw = {
 	.reg_bits = 32,
+	.reg_base = 0x8000,
 	.val_bits = 32,
 	.reg_stride = 4,
 	.reg_format_endian = REGMAP_ENDIAN_LITTLE,
@@ -1915,6 +1916,7 @@ const struct regmap_config cs35l63_regmap_sdw = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,
+	.reg_base = 0x8000,
 	.reg_format_endian = REGMAP_ENDIAN_LITTLE,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
 	.max_register = CS35L56_DSP1_PMEM_5114,