mmc: uniphier: Factor out FIFO accessors

Add macros to generate the FIFO accessors, since the code is almost
the same with only minor differences. This is done in preparation
for adding 16bit variant of the IP.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/mmc/matsushita-common.c

@@ -132,11 +132,36 @@ static int matsu_sd_wait_for_irq(struct udevice *dev, unsigned int reg,
 	return 0;
 }
 
+#define matsu_pio_read_fifo(__width, __suffix)				\
+static void matsu_pio_read_fifo_##__width(struct matsu_sd_priv *priv,	\
+					  char *pbuf, uint blksz)	\
+{									\
+	u##__width *buf = (u##__width *)pbuf;				\
+	int i;								\
+									\
+	if (likely(IS_ALIGNED((uintptr_t)buf, ((__width) / 8)))) {	\
+		for (i = 0; i < blksz / ((__width) / 8); i++) {		\
+			*buf++ = matsu_sd_read##__suffix(priv,		\
+							 MATSU_SD_BUF);	\
+		}							\
+	} else {							\
+		for (i = 0; i < blksz / ((__width) / 8); i++) {		\
+			u##__width data;				\
+			data = matsu_sd_read##__suffix(priv,		\
+						       MATSU_SD_BUF);	\
+			put_unaligned(data, buf++);			\
+		}							\
+	}								\
+}
+
+matsu_pio_read_fifo(64, q)
+matsu_pio_read_fifo(32, l)
+
 static int matsu_sd_pio_read_one_block(struct udevice *dev, char *pbuf,
 					  uint blocksize)
 {
 	struct matsu_sd_priv *priv = dev_get_priv(dev);
-	int i, ret;
+	int ret;
 
 	/* wait until the buffer is filled with data */
 	ret = matsu_sd_wait_for_irq(dev, MATSU_SD_INFO2,
@@ -150,83 +175,56 @@ static int matsu_sd_pio_read_one_block(struct udevice *dev, char *pbuf,
 	 */
 	matsu_sd_writel(priv, 0, MATSU_SD_INFO2);
 
-	if (priv->caps & MATSU_SD_CAP_64BIT) {
+	if (priv->caps & MATSU_SD_CAP_64BIT)
-		u64 *buf = (u64 *)pbuf;
+		matsu_pio_read_fifo_64(priv, pbuf, blocksize);
-		if (likely(IS_ALIGNED((uintptr_t)buf, 8))) {
+	else
-			for (i = 0; i < blocksize / 8; i++) {
+		matsu_pio_read_fifo_32(priv, pbuf, blocksize);
-				*buf++ = matsu_sd_readq(priv,
-							   MATSU_SD_BUF);
-			}
-		} else {
-			for (i = 0; i < blocksize / 8; i++) {
-				u64 data;
-				data = matsu_sd_readq(priv,
-							 MATSU_SD_BUF);
-				put_unaligned(data, buf++);
-			}
-		}
-	} else {
-		u32 *buf = (u32 *)pbuf;
-		if (likely(IS_ALIGNED((uintptr_t)buf, 4))) {
-			for (i = 0; i < blocksize / 4; i++) {
-				*buf++ = matsu_sd_readl(priv,
-							   MATSU_SD_BUF);
-			}
-		} else {
-			for (i = 0; i < blocksize / 4; i++) {
-				u32 data;
-				data = matsu_sd_readl(priv, MATSU_SD_BUF);
-				put_unaligned(data, buf++);
-			}
-		}
-	}
 
 	return 0;
 }
 
+#define matsu_pio_write_fifo(__width, __suffix)				\
+static void matsu_pio_write_fifo_##__width(struct matsu_sd_priv *priv,	\
+					   const char *pbuf, uint blksz)\
+{									\
+	const u##__width *buf = (const u##__width *)pbuf;		\
+	int i;								\
+									\
+	if (likely(IS_ALIGNED((uintptr_t)buf, ((__width) / 8)))) {	\
+		for (i = 0; i < blksz / ((__width) / 8); i++) {		\
+			matsu_sd_write##__suffix(priv, *buf++,		\
+						 MATSU_SD_BUF);		\
+		}							\
+	} else {							\
+		for (i = 0; i < blksz / ((__width) / 8); i++) {		\
+			u##__width data = get_unaligned(buf++);		\
+			matsu_sd_write##__suffix(priv, data,		\
+						 MATSU_SD_BUF);		\
+		}							\
+	}								\
+}
+
+matsu_pio_write_fifo(64, q)
+matsu_pio_write_fifo(32, l)
+
 static int matsu_sd_pio_write_one_block(struct udevice *dev,
 					   const char *pbuf, uint blocksize)
 {
 	struct matsu_sd_priv *priv = dev_get_priv(dev);
-	int i, ret;
+	int ret;
 
 	/* wait until the buffer becomes empty */
 	ret = matsu_sd_wait_for_irq(dev, MATSU_SD_INFO2,
-				       MATSU_SD_INFO2_BWE);
+				    MATSU_SD_INFO2_BWE);
 	if (ret)
 		return ret;
 
 	matsu_sd_writel(priv, 0, MATSU_SD_INFO2);
 
-	if (priv->caps & MATSU_SD_CAP_64BIT) {
+	if (priv->caps & MATSU_SD_CAP_64BIT)
-		const u64 *buf = (const u64 *)pbuf;
+		matsu_pio_write_fifo_64(priv, pbuf, blocksize);
-		if (likely(IS_ALIGNED((uintptr_t)buf, 8))) {
+	else
-			for (i = 0; i < blocksize / 8; i++) {
+		matsu_pio_write_fifo_32(priv, pbuf, blocksize);
-				matsu_sd_writeq(priv, *buf++,
-						   MATSU_SD_BUF);
-			}
-		} else {
-			for (i = 0; i < blocksize / 8; i++) {
-				u64 data = get_unaligned(buf++);
-				matsu_sd_writeq(priv, data,
-						   MATSU_SD_BUF);
-			}
-		}
-	} else {
-		const u32 *buf = (const u32 *)pbuf;
-		if (likely(IS_ALIGNED((uintptr_t)buf, 4))) {
-			for (i = 0; i < blocksize / 4; i++) {
-				matsu_sd_writel(priv, *buf++,
-						   MATSU_SD_BUF);
-			}
-		} else {
-			for (i = 0; i < blocksize / 4; i++) {
-				u32 data = get_unaligned(buf++);
-				matsu_sd_writel(priv, data,
-						   MATSU_SD_BUF);
-			}
-		}
-	}
 
 	return 0;
 }