staging: sm750fb: use BIT macro for I2C_STATUS fields

Replace complex definition of I2C_STATUS register fields with BIT() macro
and use open-coded implementation for register manipulation
Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/ddk750_hwi2c.c

@@ -59,9 +59,7 @@ static long hw_i2c_wait_tx_done(void)
 
 	/* Wait until the transfer is completed. */
 	timeout = HWI2C_WAIT_TIMEOUT;
-	while ((FIELD_GET(PEEK32(I2C_STATUS),
-			  I2C_STATUS, TX) != I2C_STATUS_TX_COMPLETED) &&
-	       (timeout != 0))
+	while (!(PEEK32(I2C_STATUS) & I2C_STATUS_TX) && (timeout != 0))
 		timeout--;
 
 	if (timeout == 0)

drivers/staging/sm750fb/ddk750_reg.h

@@ -1612,20 +1612,10 @@
 #define I2C_CTRL_EN                                     BIT(0)
 
 #define I2C_STATUS                                      0x010042
-#define I2C_STATUS_TX                                   3:3
-#define I2C_STATUS_TX_PROGRESS                          0
-#define I2C_STATUS_TX_COMPLETED                         1
-#define I2C_TX_DONE                                     0x08
-#define I2C_STATUS_ERR                                  2:2
-#define I2C_STATUS_ERR_NORMAL                           0
-#define I2C_STATUS_ERR_ERROR                            1
-#define I2C_STATUS_ERR_CLEAR                            0
-#define I2C_STATUS_ACK                                  1:1
-#define I2C_STATUS_ACK_RECEIVED                         0
-#define I2C_STATUS_ACK_NOT                              1
-#define I2C_STATUS_BSY                                  0:0
-#define I2C_STATUS_BSY_IDLE                             0
-#define I2C_STATUS_BSY_BUSY                             1
+#define I2C_STATUS_TX                                   BIT(3)
+#define I2C_STATUS_ERR                                  BIT(2)
+#define I2C_STATUS_ACK                                  BIT(1)
+#define I2C_STATUS_BSY                                  BIT(0)
 
 #define I2C_RESET                                       0x010042
 #define I2C_RESET_BUS_ERROR                             2:2