spi: ich: Separate out the read/write trace from normal debugging

The trace is seldom useful for basic debugging. Allow it to be enabled
separately so that it is easier to see the more important init and error
debug messages.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

drivers/spi/ich.c

@@ -20,6 +20,12 @@
 #define SPI_OPCODE_WREN      0x06
 #define SPI_OPCODE_FAST_READ 0x0b
 
+#ifdef DEBUG_TRACE
+#define debug_trace(fmt, args...) debug(fmt, ##args)
+#else
+#define debug_trace(x, args...)
+#endif
+
 struct ich_spi_platdata {
 	pci_dev_t dev;		/* PCI device number */
 	int ich_version;	/* Controller version, 7 or 9 */
@@ -52,7 +58,7 @@ static u8 ich_readb(struct ich_spi_priv *priv, int reg)
 {
 	u8 value = readb(priv->base + reg);
 
-	debug("read %2.2x from %4.4x\n", value, reg);
+	debug_trace("read %2.2x from %4.4x\n", value, reg);
 
 	return value;
 }
@@ -61,7 +67,7 @@ static u16 ich_readw(struct ich_spi_priv *priv, int reg)
 {
 	u16 value = readw(priv->base + reg);
 
-	debug("read %4.4x from %4.4x\n", value, reg);
+	debug_trace("read %4.4x from %4.4x\n", value, reg);
 
 	return value;
 }
@@ -70,7 +76,7 @@ static u32 ich_readl(struct ich_spi_priv *priv, int reg)
 {
 	u32 value = readl(priv->base + reg);
 
-	debug("read %8.8x from %4.4x\n", value, reg);
+	debug_trace("read %8.8x from %4.4x\n", value, reg);
 
 	return value;
 }
@@ -78,19 +84,19 @@ static u32 ich_readl(struct ich_spi_priv *priv, int reg)
 static void ich_writeb(struct ich_spi_priv *priv, u8 value, int reg)
 {
 	writeb(value, priv->base + reg);
-	debug("wrote %2.2x to %4.4x\n", value, reg);
+	debug_trace("wrote %2.2x to %4.4x\n", value, reg);
 }
 
 static void ich_writew(struct ich_spi_priv *priv, u16 value, int reg)
 {
 	writew(value, priv->base + reg);
-	debug("wrote %4.4x to %4.4x\n", value, reg);
+	debug_trace("wrote %4.4x to %4.4x\n", value, reg);
 }
 
 static void ich_writel(struct ich_spi_priv *priv, u32 value, int reg)
 {
 	writel(value, priv->base + reg);
-	debug("wrote %8.8x to %4.4x\n", value, reg);
+	debug_trace("wrote %8.8x to %4.4x\n", value, reg);
 }
 
 static void write_reg(struct ich_spi_priv *priv, const void *value,
@@ -447,7 +453,7 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen,
 		}
 		memcpy(trans->cmd, dout, bytes);
 		trans->cmd_len = bytes;
-		debug("ICH SPI: Saved %d bytes\n", bytes);
+		debug_trace("ICH SPI: Saved %d bytes\n", bytes);
 		return 0;
 	}
 
@@ -462,7 +468,7 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen,
 		trans->out = trans->cmd;
 		trans->bytesout = trans->cmd_len;
 		using_cmd = 1;
-		debug("ICH SPI: Using %d bytes\n", trans->cmd_len);
+		debug_trace("ICH SPI: Using %d bytes\n", trans->cmd_len);
 	} else {
 		trans->out = dout;
 		trans->bytesout = dout ? bytes : 0;
@@ -520,7 +526,7 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen,
 	if (using_cmd && dout && bytes) {
 		trans->out = dout;
 		trans->bytesout = bytes;
-		debug("ICH SPI: Moving to data, %d bytes\n", bytes);
+		debug_trace("ICH SPI: Moving to data, %d bytes\n", bytes);
 	}
 
 	/* Preset control fields */