diff --git a/writeprotect.c b/writeprotect.c
index 5f47bc0..a42a798 100644
--- a/writeprotect.c
+++ b/writeprotect.c
@@ -151,9 +151,17 @@
 	return FLASHROM_WP_OK;
 }
 
+/** Get the range selected by a WP configuration. */
+static enum flashrom_wp_result get_wp_range(struct wp_range *range, struct flashctx *flash, const struct wp_bits *bits)
+{
+	flash->chip->decode_range(&range->start, &range->len, bits, flashrom_flash_getsize(flash));
+
+	return FLASHROM_WP_OK;
+}
+
 static bool chip_supported(struct flashctx *flash)
 {
-	return false;
+	return (flash->chip != NULL) && (flash->chip->decode_range != NULL);
 }
 
 enum flashrom_wp_result wp_read_cfg(struct flashrom_wp_cfg *cfg, struct flashctx *flash)
@@ -167,11 +175,11 @@
 	if (ret == FLASHROM_WP_OK)
 		ret = read_wp_bits(&bits, flash);
 
-	/* TODO: implement get_wp_range() and get_wp_mode() and call them */
-	/*
 	if (ret == FLASHROM_WP_OK)
 		ret = get_wp_range(&cfg->range, flash, &bits);
 
+	/* TODO: implement and get_wp_mode() and call it */
+	/*
 	if (ret == FLASHROM_WP_OK)
 		ret = get_wp_mode(&cfg->mode, &bits);
 	*/