[PATCH] ASoC: tas2781: Use of_property_read_reg()

["Rob Herring (Arm)" <robh@xxxxxxxxxx>]

Replace the open-coded parsing of "reg" with of_property_read_reg().
The #ifdef is also easily replaced with IS_ENABLED().

Signed-off-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
---
 sound/soc/codecs/tas2781-i2c.c | 34 +++++++++++-----------------------
 1 file changed, 11 insertions(+), 23 deletions(-)

diff --git a/sound/soc/codecs/tas2781-i2c.c b/sound/soc/codecs/tas2781-i2c.c
index 9350972dfefe..746e6964bfb3 100644
--- a/sound/soc/codecs/tas2781-i2c.c
+++ b/sound/soc/codecs/tas2781-i2c.c
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/of_gpio.h>
 #include <linux/of_irq.h>
 #include <linux/regmap.h>
@@ -622,33 +623,20 @@ static void tasdevice_parse_dt(struct tasdevice_priv *tas_priv)
 
 		tas_priv->irq_info.irq_gpio =
 			acpi_dev_gpio_irq_get(ACPI_COMPANION(&client->dev), 0);
-	} else {
+	} else if (IS_ENABLED(CONFIG_OF)) {
 		struct device_node *np = tas_priv->dev->of_node;
-#ifdef CONFIG_OF
-		const __be32 *reg, *reg_end;
-		int len, sw, aw;
-
-		aw = of_n_addr_cells(np);
-		sw = of_n_size_cells(np);
-		if (sw == 0) {
-			reg = (const __be32 *)of_get_property(np,
-				"reg", &len);
-			reg_end = reg + len/sizeof(*reg);
-			ndev = 0;
-			do {
-				dev_addrs[ndev] = of_read_number(reg, aw);
-				reg += aw;
-				ndev++;
-			} while (reg < reg_end);
-		} else {
-			ndev = 1;
-			dev_addrs[0] = client->addr;
+		u64 addr;
+
+		for (i = 0; i < TASDEVICE_MAX_CHANNELS; i++) {
+			if (of_property_read_reg(np, i, &addr, NULL))
+				break;
+			dev_addrs[ndev++] = addr;
 		}
-#else
+
+		tas_priv->irq_info.irq_gpio = of_irq_get(np, 0);
+	} else {
 		ndev = 1;
 		dev_addrs[0] = client->addr;
-#endif
-		tas_priv->irq_info.irq_gpio = of_irq_get(np, 0);
 	}
 	tas_priv->ndev = ndev;
 	for (i = 0; i < ndev; i++)
-- 
2.43.0