drivers/soc/litex: s/LITEX_REG_SIZE/LITEX_SUBREG_ALIGN/g

The constant LITEX_REG_SIZE is renamed to the more descriptive
LITEX_SUBREG_ALIGN (LiteX CSR subregisters are located at 32-bit
aligned MMIO addresses).

NOTE: this is a non-functional change.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>

diff --git a/include/linux/litex.h b/include/linux/litex.h
index 918bab45243cae16c7048c5f8eec2679d7468761..c63a7e1a337ca863b7269c4cfdd2e62f2568c7ea 100644 (file)
--- a/include/linux/litex.h
+++ b/include/linux/litex.h
@@ -20,10 +20,12 @@
  * Supporting other configurations will require extending the logic in this
  * header and in the LiteX SoC controller driver.
  */
-#define LITEX_REG_SIZE   0x4
 #define LITEX_SUBREG_SIZE      0x1
 #define LITEX_SUBREG_SIZE_BIT   (LITEX_SUBREG_SIZE * 8)
 
+/* LiteX subregisters of any width are always aligned on a 4-byte boundary */
+#define LITEX_SUBREG_ALIGN       0x4
+
 static inline void _write_litex_subregister(u32 val, void __iomem *addr)
 {
        writel((u32 __force)cpu_to_le32(val), addr);
@@ -36,11 +38,11 @@ static inline u32 _read_litex_subregister(void __iomem *addr)
 
 #define WRITE_LITEX_SUBREGISTER(val, base_offset, subreg_id) \
        _write_litex_subregister(val, (base_offset) + \
-                                       LITEX_REG_SIZE * (subreg_id))
+                                       LITEX_SUBREG_ALIGN * (subreg_id))
 
 #define READ_LITEX_SUBREGISTER(base_offset, subreg_id) \
        _read_litex_subregister((base_offset) + \
-                                       LITEX_REG_SIZE * (subreg_id))
+                                       LITEX_SUBREG_ALIGN * (subreg_id))
 
 /*
  * LiteX SoC Generator, depending on the configuration, can split a single