[PATCH 0/2] A couple of pinctrl-mxs updates

[PATCH 0/2] A couple of pinctrl-mxs updates

[Shawn Guo]

Hi Linus,

The series consists of a couple of pinctrl-mxs driver updates, which
are required for mxs device tree support, so please queue them for
the upcoming merge window, if they look all good.  Thanks.

Regards,
Shawn

Shawn Guo (2):
  pinctrl: mxs: create group for pin config node
  pinctrl: mxs: skip gpio nodes for group creation

 drivers/pinctrl/pinctrl-mxs.c |   75 ++++++++++++++++++++++++++++-------------
 1 files changed, 51 insertions(+), 24 deletions(-)

-- 
1.7.5.4

[PATCH 1/2] pinctrl: mxs: create group for pin config node

[Shawn Guo]

The initial mxs pinctrl support, commit 1772311 (pinctrl: add
pinctrl-mxs support) skipped creating group from device tree pin config
node.  Add it to get pin config node work for client device.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 drivers/pinctrl/pinctrl-mxs.c |   68 ++++++++++++++++++++++++++--------------
 1 files changed, 44 insertions(+), 24 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-mxs.c b/drivers/pinctrl/pinctrl-mxs.c
index 93cd959..787ae7b 100644
--- a/drivers/pinctrl/pinctrl-mxs.c
+++ b/drivers/pinctrl/pinctrl-mxs.c
@@ -70,13 +70,18 @@ static int mxs_dt_node_to_map(struct pinctrl_dev *pctldev,
 			      struct pinctrl_map **map, unsigned *num_maps)
 {
 	struct pinctrl_map *new_map;
-	char *group;
-	unsigned new_num;
+	char *group = NULL;
+	unsigned new_num = 1;
 	unsigned long config = 0;
 	unsigned long *pconfig;
 	int length = strlen(np->name) + SUFFIX_LEN;
-	u32 val;
-	int ret;
+	bool purecfg = false;
+	u32 val, reg;
+	int ret, i = 0;
+
+	/* Check for pin config node which has no 'reg' property */
+	if (of_property_read_u32(np, "reg", &reg))
+		purecfg = true;
 
 	ret = of_property_read_u32(np, "fsl,drive-strength", &val);
 	if (!ret)
@@ -88,21 +93,26 @@ static int mxs_dt_node_to_map(struct pinctrl_dev *pctldev,
 	if (!ret)
 		config |= val << PULL_SHIFT | PULL_PRESENT;
 
-	new_num = config ? 2 : 1;
+	/* Check for group node which has both mux and config settings */
+	if (!purecfg && config)
+		new_num = 2;
+
 	new_map = kzalloc(sizeof(*new_map) * new_num, GFP_KERNEL);
 	if (!new_map)
 		return -ENOMEM;
 
-	new_map[0].type = PIN_MAP_TYPE_MUX_GROUP;
-	new_map[0].data.mux.function = np->name;
-
-	/* Compose group name */
-	group = kzalloc(length, GFP_KERNEL);
-	if (!group)
-		return -ENOMEM;
-	of_property_read_u32(np, "reg", &val);
-	snprintf(group, length, "%s.%d", np->name, val);
-	new_map[0].data.mux.group = group;
+	if (!purecfg) {
+		new_map[i].type = PIN_MAP_TYPE_MUX_GROUP;
+		new_map[i].data.mux.function = np->name;
+
+		/* Compose group name */
+		group = kzalloc(length, GFP_KERNEL);
+		if (!group)
+			return -ENOMEM;
+		snprintf(group, length, "%s.%d", np->name, reg);
+		new_map[i].data.mux.group = group;
+		i++;
+	}
 
 	if (config) {
 		pconfig = kmemdup(&config, sizeof(config), GFP_KERNEL);
@@ -111,10 +121,11 @@ static int mxs_dt_node_to_map(struct pinctrl_dev *pctldev,
 			goto free;
 		}
 
-		new_map[1].type = PIN_MAP_TYPE_CONFIGS_GROUP;
-		new_map[1].data.configs.group_or_pin = group;
-		new_map[1].data.configs.configs = pconfig;
-		new_map[1].data.configs.num_configs = 1;
+		new_map[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+		new_map[i].data.configs.group_or_pin = purecfg ? np->name :
+								 group;
+		new_map[i].data.configs.configs = pconfig;
+		new_map[i].data.configs.num_configs = 1;
 	}
 
 	*map = new_map;
@@ -342,8 +353,10 @@ static int __devinit mxs_pinctrl_parse_group(struct platform_device *pdev,
 	group = devm_kzalloc(&pdev->dev, length, GFP_KERNEL);
 	if (!group)
 		return -ENOMEM;
-	of_property_read_u32(np, "reg", &val);
-	snprintf(group, length, "%s.%d", np->name, val);
+	if (of_property_read_u32(np, "reg", &val))
+		snprintf(group, length, "%s", np->name);
+	else
+		snprintf(group, length, "%s.%d", np->name, val);
 	g->name = group;
 
 	prop = of_find_property(np, propname, &length);
@@ -367,7 +380,8 @@ static int __devinit mxs_pinctrl_parse_group(struct platform_device *pdev,
 		g->pins[i] = MUXID_TO_PINID(g->pins[i]);
 	}
 
-	*out_name = g->name;
+	if (out_name)
+		*out_name = g->name;
 
 	return 0;
 }
@@ -393,6 +407,7 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	/* Count total functions and groups */
 	fn = fnull;
 	for_each_child_of_node(np, child) {
+		soc->ngroups++;
 		/* Skip pure pinconf node */
 		if (of_property_read_u32(child, "reg", &val))
 			continue;
@@ -400,7 +415,6 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 			fn = child->name;
 			soc->nfunctions++;
 		}
-		soc->ngroups++;
 	}
 
 	soc->functions = devm_kzalloc(&pdev->dev, soc->nfunctions *
@@ -430,8 +444,14 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	idxf = 0;
 	fn = fnull;
 	for_each_child_of_node(np, child) {
-		if (of_property_read_u32(child, "reg", &val))
+		if (of_property_read_u32(child, "reg", &val)) {
+			ret = mxs_pinctrl_parse_group(pdev, child,
+						      idxg++, NULL);
+			if (ret)
+				return ret;
 			continue;
+		}
+
 		if (strcmp(fn, child->name)) {
 			f = &soc->functions[idxf++];
 			f->groups = devm_kzalloc(&pdev->dev, f->ngroups *
-- 
1.7.5.4

[PATCH 2/2] pinctrl: mxs: skip gpio nodes for group creation

[Shawn Guo]

The recent added mxs gpio device tree bindings require gpio nodes
defined under pinctrl node too.  The pinctrl-mxs driver should skip
these node for group parsing and creating.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 drivers/pinctrl/pinctrl-mxs.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-mxs.c b/drivers/pinctrl/pinctrl-mxs.c
index 787ae7b..ab63d38 100644
--- a/drivers/pinctrl/pinctrl-mxs.c
+++ b/drivers/pinctrl/pinctrl-mxs.c
@@ -393,6 +393,7 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	struct device_node *np = pdev->dev.of_node;
 	struct device_node *child;
 	struct mxs_function *f;
+	const char *gpio_compat = "fsl,mxs-gpio";
 	const char *fn, *fnull = "";
 	int i = 0, idxf = 0, idxg = 0;
 	int ret;
@@ -407,6 +408,8 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	/* Count total functions and groups */
 	fn = fnull;
 	for_each_child_of_node(np, child) {
+		if (of_device_is_compatible(child, gpio_compat))
+			continue;
 		soc->ngroups++;
 		/* Skip pure pinconf node */
 		if (of_property_read_u32(child, "reg", &val))
@@ -431,6 +434,8 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	fn = fnull;
 	f = &soc->functions[idxf];
 	for_each_child_of_node(np, child) {
+		if (of_device_is_compatible(child, gpio_compat))
+			continue;
 		if (of_property_read_u32(child, "reg", &val))
 			continue;
 		if (strcmp(fn, child->name)) {
@@ -444,6 +449,8 @@ static int __devinit mxs_pinctrl_probe_dt(struct platform_device *pdev,
 	idxf = 0;
 	fn = fnull;
 	for_each_child_of_node(np, child) {
+		if (of_device_is_compatible(child, gpio_compat))
+			continue;
 		if (of_property_read_u32(child, "reg", &val)) {
 			ret = mxs_pinctrl_parse_group(pdev, child,
 						      idxg++, NULL);
-- 
1.7.5.4

[PATCH 1/2] pinctrl: mxs: create group for pin config node

[Linus Walleij]

On Sun, May 13, 2012 at 5:19 PM, Shawn Guo <shawn.guo@linaro.org> wrote:

> The initial mxs pinctrl support, commit 1772311 (pinctrl: add
> pinctrl-mxs support) skipped creating group from device tree pin config
> node. ?Add it to get pin config node work for client device.
>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

Thanks, applied.
Linus Walleij

[PATCH 2/2] pinctrl: mxs: skip gpio nodes for group creation

[Linus Walleij]

On Sun, May 13, 2012 at 5:19 PM, Shawn Guo <shawn.guo@linaro.org> wrote:

> The recent added mxs gpio device tree bindings require gpio nodes
> defined under pinctrl node too. ?The pinctrl-mxs driver should skip
> these node for group parsing and creating.
>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

Thanks, applied!
Linus Walleij