mmc: core: Move mmc_of_parse_voltage() to host.c

MMC OF parsing functions, which parses various host DT properties, should
stay close to each other. Therefore, let's move mmc_of_parse_voltage()
close to mmc_of_parse() into host.c.

Additionally, there is no reason to build the code only when CONFIG_OF is
set, as there should be stub functions for the OF helpers that is being
used, so let's drop this condition as well.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/core.c

@@ -1112,54 +1112,6 @@ u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max)
 	return mask;
 }
 
-#ifdef CONFIG_OF
-
-/**
- * mmc_of_parse_voltage - return mask of supported voltages
- * @np: The device node need to be parsed.
- * @mask: mask of voltages available for MMC/SD/SDIO
- *
- * Parse the "voltage-ranges" DT property, returning zero if it is not
- * found, negative errno if the voltage-range specification is invalid,
- * or one if the voltage-range is specified and successfully parsed.
- */
-int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
-{
-	const u32 *voltage_ranges;
-	int num_ranges, i;
-
-	voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
-	num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
-	if (!voltage_ranges) {
-		pr_debug("%pOF: voltage-ranges unspecified\n", np);
-		return 0;
-	}
-	if (!num_ranges) {
-		pr_err("%pOF: voltage-ranges empty\n", np);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < num_ranges; i++) {
-		const int j = i * 2;
-		u32 ocr_mask;
-
-		ocr_mask = mmc_vddrange_to_ocrmask(
-				be32_to_cpu(voltage_ranges[j]),
-				be32_to_cpu(voltage_ranges[j + 1]));
-		if (!ocr_mask) {
-			pr_err("%pOF: voltage-range #%d is invalid\n",
-				np, i);
-			return -EINVAL;
-		}
-		*mask |= ocr_mask;
-	}
-
-	return 1;
-}
-EXPORT_SYMBOL(mmc_of_parse_voltage);
-
-#endif /* CONFIG_OF */
-
 static int mmc_of_get_func_num(struct device_node *node)
 {
 	u32 reg;

drivers/mmc/core/host.c

@@ -348,6 +348,50 @@ int mmc_of_parse(struct mmc_host *host)
 
 EXPORT_SYMBOL(mmc_of_parse);
 
+/**
+ * mmc_of_parse_voltage - return mask of supported voltages
+ * @np: The device node need to be parsed.
+ * @mask: mask of voltages available for MMC/SD/SDIO
+ *
+ * Parse the "voltage-ranges" DT property, returning zero if it is not
+ * found, negative errno if the voltage-range specification is invalid,
+ * or one if the voltage-range is specified and successfully parsed.
+ */
+int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
+{
+	const u32 *voltage_ranges;
+	int num_ranges, i;
+
+	voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
+	num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
+	if (!voltage_ranges) {
+		pr_debug("%pOF: voltage-ranges unspecified\n", np);
+		return 0;
+	}
+	if (!num_ranges) {
+		pr_err("%pOF: voltage-ranges empty\n", np);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < num_ranges; i++) {
+		const int j = i * 2;
+		u32 ocr_mask;
+
+		ocr_mask = mmc_vddrange_to_ocrmask(
+				be32_to_cpu(voltage_ranges[j]),
+				be32_to_cpu(voltage_ranges[j + 1]));
+		if (!ocr_mask) {
+			pr_err("%pOF: voltage-range #%d is invalid\n",
+				np, i);
+			return -EINVAL;
+		}
+		*mask |= ocr_mask;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL(mmc_of_parse_voltage);
+
 /**
  *	mmc_alloc_host - initialise the per-host structure.
  *	@extra: sizeof private data structure