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[v3,03/21] dm: pinctrl: migrate pinctrl-generic to livetree

Message ID 20200113103515.20879-4-patrick.delaunay@st.com
State Accepted
Commit e93f39213a3d614a33989878d85724cba30a9deb
Headers show
Series dm: add support of new binding in gpio and pincontrol | expand

Commit Message

Patrick Delaunay Jan. 13, 2020, 10:34 a.m. UTC 
Migrate pinctrl-generic to livetree:
- dev_for_each_property
- dev_read_prop_by_prop
- dev_read_string_count
- dev_read_string_index
and get rid of DECLARE_GLOBAL_DATA_PTR.

This patch solves the parsing issue during sandbox tests for pin
configuration (OF_LIVE is activated in sandbox_defconfig
and sub node are not correctly parsed in
pinctrl_generic_set_state_subnode with fdt lib API).

Reviewed-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

Changes in v3: None
Changes in v2:
- Change dev_ functions in pinctrl-generic

 drivers/pinctrl/pinctrl-generic.c | 30 +++++++++++-------------------
 1 file changed, 11 insertions(+), 19 deletions(-)
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Patch

diff --git a/drivers/pinctrl/pinctrl-generic.c b/drivers/pinctrl/pinctrl-generic.c
index eecf0f5dc1..9c4f73b1be 100644
--- a/drivers/pinctrl/pinctrl-generic.c
+++ b/drivers/pinctrl/pinctrl-generic.c
@@ -8,8 +8,6 @@ 
 #include <linux/compat.h>
 #include <dm/pinctrl.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 /**
  * pinctrl_pin_name_to_selector() - return the pin selector for a pin
  *
@@ -243,18 +241,14 @@  static int pinctrl_generic_set_state_one(struct udevice *dev,
 					 struct udevice *config,
 					 bool is_group, unsigned selector)
 {
-	const void *fdt = gd->fdt_blob;
-	int node_offset = dev_of_offset(config);
 	const char *propname;
 	const void *value;
-	int prop_offset, len, func_selector, param, ret;
+	struct ofprop property;
+	int len, func_selector, param, ret;
 	u32 arg, default_val;
 
-	for (prop_offset = fdt_first_property_offset(fdt, node_offset);
-	     prop_offset > 0;
-	     prop_offset = fdt_next_property_offset(fdt, prop_offset)) {
-		value = fdt_getprop_by_offset(fdt, prop_offset,
-					      &propname, &len);
+	dev_for_each_property(property, config) {
+		value = dev_read_prop_by_prop(&property, &propname, &len);
 		if (!value)
 			return -EINVAL;
 
@@ -298,19 +292,17 @@  static int pinctrl_generic_set_state_one(struct udevice *dev,
 static int pinctrl_generic_set_state_subnode(struct udevice *dev,
 					     struct udevice *config)
 {
-	const void *fdt = gd->fdt_blob;
-	int node = dev_of_offset(config);
 	const char *subnode_target_type = "pins";
 	bool is_group = false;
 	const char *name;
 	int strings_count, selector, i, ret;
 
-	strings_count = fdt_stringlist_count(fdt, node, subnode_target_type);
+	strings_count = dev_read_string_count(config, subnode_target_type);
 	if (strings_count < 0) {
 		subnode_target_type = "groups";
 		is_group = true;
-		strings_count = fdt_stringlist_count(fdt, node,
-						     subnode_target_type);
+		strings_count = dev_read_string_count(config,
+						      subnode_target_type);
 		if (strings_count < 0) {
 			/* skip this node; may contain config child nodes */
 			return 0;
@@ -318,10 +310,10 @@  static int pinctrl_generic_set_state_subnode(struct udevice *dev,
 	}
 
 	for (i = 0; i < strings_count; i++) {
-		name = fdt_stringlist_get(fdt, node, subnode_target_type, i,
-					  NULL);
-		if (!name)
-			return -EINVAL;
+		ret = dev_read_string_index(config, subnode_target_type, i,
+					    &name);
+		if (ret)
+			return ret;
 
 		if (is_group)
 			selector = pinctrl_group_name_to_selector(dev, name);