libfdt: Bring in upstream stringlist functions

These have now landed upstream. The naming is different and in one case the
function signature has changed. Update the code to match.

This applies the following upstream commits by
Thierry Reding <treding@nvidia.com> :

   604e61e fdt: Add functions to retrieve strings
   8702bd1 fdt: Add a function to get the index of a string
   2218387 fdt: Add a function to count strings

Signed-off-by: Simon Glass <sjg@chromium.org>

12 files changed, 28 insertions, 27 deletions

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 4d78e3fcac..c42fff6ec2 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -101,10 +101,10 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
 
 	debug("%s(dev=%p, name=%s, clk=%p)\n", __func__, dev, name, clk);
 
-	index = fdt_find_string(gd->fdt_blob, dev->of_offset, "clock-names",
-				name);
+	index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset,
+				      "clock-names", name);
 	if (index < 0) {
-		debug("fdt_find_string() failed: %d\n", index);
+		debug("fdt_stringlist_search() failed: %d\n", index);
 		return index;
 	}
 
diff --git a/drivers/core/device.c b/drivers/core/device.c
index b737f1c789..1935b8d46f 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -698,7 +698,7 @@ fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name)
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	int index;
 
-	index = fdt_find_string(gd->fdt_blob, dev->of_offset, "reg-names",
+	index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset, "reg-names",
 				name);
 	if (index < 0)
 		return index;
diff --git a/drivers/gpio/dwapb_gpio.c b/drivers/gpio/dwapb_gpio.c
index 72cec48800..471e18aeaa 100644
--- a/drivers/gpio/dwapb_gpio.c
+++ b/drivers/gpio/dwapb_gpio.c
@@ -132,7 +132,8 @@ static int gpio_dwapb_bind(struct udevice *dev)
 		plat->base = base;
 		plat->bank = bank;
 		plat->pins = fdtdec_get_int(blob, node, "snps,nr-gpios", 0);
-		ret = fdt_get_string(blob, node, "bank-name", &plat->name);
+		plat->name = fdt_stringlist_get(blob, node, "bank-name", 0,
+						NULL);
 		if (ret)
 			goto err;
 
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
index a26f44e1e6..6247d334a0 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -773,7 +773,7 @@ static int mxc_i2c_probe(struct udevice *bus)
 	 * See Documentation/devicetree/bindings/i2c/i2c-imx.txt
 	 * Use gpio to force bus idle when necessary.
 	 */
-	ret = fdt_find_string(fdt, node, "pinctrl-names", "gpio");
+	ret = fdt_stringlist_search(fdt, node, "pinctrl-names", "gpio");
 	if (ret < 0) {
 		dev_info(dev, "i2c bus %d at %lu, no gpio pinctrl state.\n", bus->seq, i2c_bus->base);
 	} else {
diff --git a/drivers/mailbox/mailbox-uclass.c b/drivers/mailbox/mailbox-uclass.c
index 40f851d915..a7fcde51d5 100644
--- a/drivers/mailbox/mailbox-uclass.c
+++ b/drivers/mailbox/mailbox-uclass.c
@@ -85,10 +85,10 @@ int mbox_get_by_name(struct udevice *dev, const char *name,
 
 	debug("%s(dev=%p, name=%s, chan=%p)\n", __func__, dev, name, chan);
 
-	index = fdt_find_string(gd->fdt_blob, dev->of_offset, "mbox-names",
-				name);
+	index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset,
+				      "mbox-names", name);
 	if (index < 0) {
-		debug("fdt_find_string() failed: %d\n", index);
+		debug("fdt_stringlist_search() failed: %d\n", index);
 		return index;
 	}
 
diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c
index 4c149e1bdf..91570a2910 100644
--- a/drivers/net/sun8i_emac.c
+++ b/drivers/net/sun8i_emac.c
@@ -456,8 +456,9 @@ static int parse_phy_pins(struct udevice *dev)
 	for (i = 0; ; i++) {
 		int pin;
 
-		if (fdt_get_string_index(gd->fdt_blob, offset,
-					 "allwinner,pins", i, &pin_name))
+		pin_name = fdt_stringlist_get(gd->fdt_blob, offset,
+					 "allwinner,pins", i, NULL);
+		if (!pin_name)
 			break;
 		if (pin_name[0] != 'P')
 			continue;
diff --git a/drivers/pinctrl/exynos/pinctrl-exynos.c b/drivers/pinctrl/exynos/pinctrl-exynos.c
index a28405fc15..c9c13e6802 100644
--- a/drivers/pinctrl/exynos/pinctrl-exynos.c
+++ b/drivers/pinctrl/exynos/pinctrl-exynos.c
@@ -71,7 +71,7 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
 {
 	const void *fdt = gd->fdt_blob;
 	int node = config->of_offset;
-	unsigned int count, idx, pin_num, ret;
+	unsigned int count, idx, pin_num;
 	unsigned int pinfunc, pinpud, pindrv;
 	unsigned long reg, value;
 	const char *name;
@@ -80,7 +80,7 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
 	 * refer to the following document for the pinctrl bindings
 	 * linux/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt
 	 */
-	count = fdt_count_strings(fdt, node, "samsung,pins");
+	count =  fdt_stringlist_count(fdt, node, "samsung,pins");
 	if (count <= 0)
 		return -EINVAL;
 
@@ -89,9 +89,8 @@ int exynos_pinctrl_set_state(struct udevice *dev, struct udevice *config)
 	pindrv = fdtdec_get_int(fdt, node, "samsung,pin-drv", -1);
 
 	for (idx = 0; idx < count; idx++) {
-		ret = fdt_get_string_index(fdt, node, "samsung,pins",
-						idx, &name);
-		if (ret < 0)
+		name = fdt_stringlist_get(fdt, node, "samsung,pins", idx, NULL);
+		if (!name)
 			continue;
 		reg = pin_to_bank_base(dev, name, &pin_num);
 
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index d21a3dd755..46470eaae9 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -122,7 +122,7 @@ static fdt_addr_t parse_address(int offset, const char *name, int na, int ns)
 	int index, len = 0;
 	const fdt32_t *reg;
 
-	index = fdt_find_string(gd->fdt_blob, offset, "reg-names", name);
+	index = fdt_stringlist_search(gd->fdt_blob, offset, "reg-names", name);
 	if (index < 0)
 		return FDT_ADDR_T_NONE;
 
diff --git a/drivers/pinctrl/pinctrl-generic.c b/drivers/pinctrl/pinctrl-generic.c
index baff40f1f0..482db295fe 100644
--- a/drivers/pinctrl/pinctrl-generic.c
+++ b/drivers/pinctrl/pinctrl-generic.c
@@ -306,11 +306,11 @@ static int pinctrl_generic_set_state_subnode(struct udevice *dev,
 	const char *name;
 	int strings_count, selector, i, ret;
 
-	strings_count = fdt_count_strings(fdt, node, subnode_target_type);
+	strings_count =  fdt_stringlist_count(fdt, node, subnode_target_type);
 	if (strings_count < 0) {
 		subnode_target_type = "groups";
 		is_group = true;
-		strings_count = fdt_count_strings(fdt, node,
+		strings_count =  fdt_stringlist_count(fdt, node,
 						  subnode_target_type);
 		if (strings_count < 0) {
 			/* skip this node; may contain config child nodes */
@@ -319,9 +319,9 @@ static int pinctrl_generic_set_state_subnode(struct udevice *dev,
 	}
 
 	for (i = 0; i < strings_count; i++) {
-		ret = fdt_get_string_index(fdt, node, subnode_target_type,
-					   i, &name);
-		if (ret < 0)
+		name = fdt_stringlist_get(fdt, node, subnode_target_type, i,
+					  NULL);
+		if (!name)
 			return -EINVAL;
 
 		if (is_group)
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c
index 7397de28c0..02ab9b4afd 100644
--- a/drivers/pinctrl/pinctrl-uclass.c
+++ b/drivers/pinctrl/pinctrl-uclass.c
@@ -72,7 +72,7 @@ static int pinctrl_select_state_full(struct udevice *dev, const char *statename)
 	struct udevice *config;
 	int state, size, i, ret;
 
-	state = fdt_find_string(fdt, node, "pinctrl-names", statename);
+	state = fdt_stringlist_search(fdt, node, "pinctrl-names", statename);
 	if (state < 0) {
 		char *end;
 		/*
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
index edaecfbc99..d3744ef703 100644
--- a/drivers/reset/reset-uclass.c
+++ b/drivers/reset/reset-uclass.c
@@ -88,10 +88,10 @@ int reset_get_by_name(struct udevice *dev, const char *name,
 	debug("%s(dev=%p, name=%s, reset_ctl=%p)\n", __func__, dev, name,
 	      reset_ctl);
 
-	index = fdt_find_string(gd->fdt_blob, dev->of_offset, "reset-names",
-				name);
+	index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset,
+				      "reset-names", name);
 	if (index < 0) {
-		debug("fdt_find_string() failed: %d\n", index);
+		debug("fdt_stringlist_search() failed: %d\n", index);
 		return index;
 	}
 
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 50b16a9129..6cba1b95a1 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -1562,7 +1562,7 @@ int sunxi_simplefb_setup(void *blob)
 	offset = fdt_node_offset_by_compatible(blob, -1,
 					       "allwinner,simple-framebuffer");
 	while (offset >= 0) {
-		ret = fdt_find_string(blob, offset, "allwinner,pipeline",
+		ret = fdt_stringlist_search(blob, offset, "allwinner,pipeline",
 				      pipeline);
 		if (ret == 0)
 			break;