ASoC: mchp-spdiftx: use FIELD_PREP() where possible

Use FIELD_PREP() in macro definitions.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20221213112851.89212-5-claudiu.beznea@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/mchp-spdiftx.c

@@ -6,6 +6,7 @@
 //
 // Author: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/module.h>
@@ -71,11 +72,11 @@
 
 /* Valid Bits per Sample */
 #define SPDIFTX_MR_VBPS_MASK		GENMASK(13, 8)
-#define SPDIFTX_MR_VBPS(bps)		(((bps) << 8) & SPDIFTX_MR_VBPS_MASK)
+#define SPDIFTX_MR_VBPS(bps)		FIELD_PREP(SPDIFTX_MR_VBPS_MASK, bps)
 
 /* Chunk Size */
 #define SPDIFTX_MR_CHUNK_MASK		GENMASK(19, 16)
-#define SPDIFTX_MR_CHUNK(size)		(((size) << 16) & SPDIFTX_MR_CHUNK_MASK)
+#define SPDIFTX_MR_CHUNK(size)		FIELD_PREP(SPDIFTX_MR_CHUNK_MASK, size)
 
 /* Validity Bits for Channels 1 and 2 */
 #define SPDIFTX_MR_VALID1			BIT(24)
@@ -88,8 +89,7 @@
 
 /* Bytes per Sample */
 #define SPDIFTX_MR_BPS_MASK		GENMASK(29, 28)
-#define SPDIFTX_MR_BPS(bytes) \
-	((((bytes) - 1) << 28) & SPDIFTX_MR_BPS_MASK)
+#define SPDIFTX_MR_BPS(bytes)		FIELD_PREP(SPDIFTX_MR_BPS_MASK, (bytes - 1))
 
 /*
  * ---- Interrupt Enable/Disable/Mask/Status Register (Write/Read-only) ----