ram: k3-j721e: rename BIT_MASK()

The macro BIT_MASK is already defined in include/linux/bitops.h. To avoid
name collisions rename BIT_MASK() in drivers/ram/k3-j721e/lpddr4_private.h
to LPDDR4_BIT_MASK().

Remove superfluous parantheses.
Remove superfluous comparison to 0.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

drivers/ram/k3-j721e/lpddr4.c

@@ -719,7 +719,7 @@ uint32_t lpddr4_checkctlinterrupt(const lpddr4_privatedata * pd,
 
 		/* MISRA compliance (Shifting operation) check */
 		if (fieldshift < WORD_SHIFT) {
-			if (((ctlirqstatus >> fieldshift) & BIT_MASK) > 0U) {
+			if ((ctlirqstatus >> fieldshift) & LPDDR4_BIT_MASK) {
 				*irqstatus = true;
 			} else {
 				*irqstatus = false;
@@ -746,11 +746,11 @@ uint32_t lpddr4_ackctlinterrupt(const lpddr4_privatedata * pd,
 		if (localinterrupt > WORD_SHIFT) {
 			localinterrupt =
 			    (localinterrupt - (uint32_t) WORD_SHIFT);
-			regval = ((uint32_t) BIT_MASK << localinterrupt);
+			regval = (uint32_t)LPDDR4_BIT_MASK << localinterrupt;
 			CPS_REG_WRITE(&(ctlregbase->LPDDR4__INT_ACK_1__REG),
 				      regval);
 		} else {
-			regval = ((uint32_t) BIT_MASK << localinterrupt);
+			regval = (uint32_t)LPDDR4_BIT_MASK << localinterrupt;
 			CPS_REG_WRITE(&(ctlregbase->LPDDR4__INT_ACK_0__REG),
 				      regval);
 		}
@@ -823,7 +823,7 @@ uint32_t lpddr4_checkphyindepinterrupt(const lpddr4_privatedata * pd,
 		phyindepirqstatus =
 		    CPS_REG_READ(&(ctlregbase->LPDDR4__PI_INT_STATUS__REG));
 		*irqstatus =
-		    (((phyindepirqstatus >> (uint32_t) intr) & BIT_MASK) > 0U);
+		    !!((phyindepirqstatus >> (uint32_t)intr) & LPDDR4_BIT_MASK);
 	}
 	return result;
 }
@@ -841,7 +841,7 @@ uint32_t lpddr4_ackphyindepinterrupt(const lpddr4_privatedata * pd,
 		lpddr4_ctlregs *ctlregbase = (lpddr4_ctlregs *) pd->ctlbase;
 
 		/* Write 1 to the requested bit to ACk the interrupt */
-		regval = ((uint32_t) BIT_MASK << ui32shiftinterrupt);
+		regval = (uint32_t)LPDDR4_BIT_MASK << ui32shiftinterrupt;
 		CPS_REG_WRITE(&(ctlregbase->LPDDR4__PI_INT_ACK__REG), regval);
 	}
 
@@ -894,7 +894,7 @@ static void lpddr4_checkwrlvlerror(lpddr4_ctlregs * ctlregbase,
 	    (volatile uint32_t
 	     *)(&(ctlregbase->LPDDR4__PHY_WRLVL_ERROR_OBS_0__REG));
 	/* PHY_WRLVL_ERROR_OBS_X[1:0] should be zero */
-	errbitmask = (BIT_MASK << 1) | (BIT_MASK);
+	errbitmask = (LPDDR4_BIT_MASK << 1) | LPDDR4_BIT_MASK;
 	for (snum = 0U; snum < DSLICE_NUM; snum++) {
 		regval = CPS_REG_READ(regaddress);
 		if ((regval & errbitmask) != 0U) {
@@ -1054,7 +1054,7 @@ static void lpddr4_seterrors(lpddr4_ctlregs * ctlregbase,
 			     lpddr4_debuginfo * debuginfo, bool * errfoundptr)
 {
 
-	uint32_t errbitmask = (BIT_MASK << 0x1U) | (BIT_MASK);
+	uint32_t errbitmask = (LPDDR4_BIT_MASK << 0x1U) | LPDDR4_BIT_MASK;
 	/* Check PLL observation registers for PLL lock errors */
 
 	debuginfo->pllerror =

drivers/ram/k3-j721e/lpddr4_private.h

@@ -14,9 +14,9 @@
 #define VERSION_0  (0x54d5da40U)
 #define VERSION_1  (0xc1865a1U)
 
-#define BIT_MASK    (0x1U)
-#define BYTE_MASK   (0xffU)
-#define NIBBLE_MASK (0xfU)
+#define LPDDR4_BIT_MASK	(0x1U)
+#define BYTE_MASK	(0xffU)
+#define NIBBLE_MASK	(0xfU)
 
 #define WORD_SHIFT (32U)
 #define WORD_MASK (0xffffffffU)
@@ -46,11 +46,15 @@
 #define IO_CALIB_DONE ((uint32_t)0x1U << 23U)
 #define IO_CALIB_FIELD ((uint32_t)NIBBLE_MASK << 28U)
 #define IO_CALIB_STATE ((uint32_t)0xBU << 28U)
-#define RX_CAL_DONE ((uint32_t)BIT_MASK << 4U)
-#define CA_TRAIN_RL (((uint32_t)BIT_MASK << 5U) | ((uint32_t)BIT_MASK << 4U))
+#define RX_CAL_DONE ((uint32_t)LPDDR4_BIT_MASK << 4U)
+#define CA_TRAIN_RL (((uint32_t)LPDDR4_BIT_MASK << 5U) | \
+		     ((uint32_t)LPDDR4_BIT_MASK << 4U))
 #define WR_LVL_STATE (((uint32_t)NIBBLE_MASK) << 13U)
-#define GATE_LVL_ERROR_FIELDS (((uint32_t)BIT_MASK << 7U) | ((uint32_t)BIT_MASK << 6U))
-#define READ_LVL_ERROR_FIELDS ((((uint32_t)NIBBLE_MASK) << 28U) | (((uint32_t)BYTE_MASK) << 16U))
-#define DQ_LVL_STATUS (((uint32_t)BIT_MASK << 26U) | (((uint32_t)BYTE_MASK) << 18U))
+#define GATE_LVL_ERROR_FIELDS (((uint32_t)LPDDR4_BIT_MASK << 7U) | \
+			       ((uint32_t)LPDDR4_BIT_MASK << 6U))
+#define READ_LVL_ERROR_FIELDS ((((uint32_t)NIBBLE_MASK) << 28U) | \
+			       (((uint32_t)BYTE_MASK) << 16U))
+#define DQ_LVL_STATUS (((uint32_t)LPDDR4_BIT_MASK << 26U) | \
+		       (((uint32_t)BYTE_MASK) << 18U))
 
 #endif  /* LPDDR4_PRIV_H */