pinctrl: uniphier: support per-pin configuration via DT

Currently, the UniPhier pinctrl drivers expose only the pin-group
interface to device tree.

Provide .get_pins_count, .get_pin_name, .pinconf_set hooks to support
pin configuration via 'pins' DT property.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
index 601a42d9091a6da3ac54df31a74ea76593a8301e..916d0519110a95edf1aad55af3a76b0252926edf 100644 (file)
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
@@ -21,6 +21,34 @@
 
 static const char *uniphier_pinctrl_dummy_name = "_dummy";
 
+static int uniphier_pinctrl_get_pins_count(struct udevice *dev)
+{
+       struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
+       const struct uniphier_pinctrl_pin *pins = priv->socdata->pins;
+       int pins_count = priv->socdata->pins_count;
+
+       /*
+        * We do not list all pins in the pin table to save memory footprint.
+        * Report the max pin number + 1 to fake the framework.
+        */
+       return pins[pins_count - 1].number + 1;
+}
+
+static const char *uniphier_pinctrl_get_pin_name(struct udevice *dev,
+                                                unsigned int selector)
+{
+       struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
+       const struct uniphier_pinctrl_pin *pins = priv->socdata->pins;
+       int pins_count = priv->socdata->pins_count;
+       int i;
+
+       for (i = 0; i < pins_count; i++)
+               if (pins[i].number == selector)
+                       return pins[i].name;
+
+       return uniphier_pinctrl_dummy_name;
+}
+
 static int uniphier_pinctrl_get_groups_count(struct udevice *dev)
 {
        struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
@@ -157,8 +185,8 @@ static int uniphier_pinconf_bias_set(struct udevice *dev, unsigned int pin,
        return 0;
 }
 
-static int uniphier_pinconf_set_one(struct udevice *dev, unsigned int pin,
-                                   unsigned int param, unsigned int arg)
+static int uniphier_pinconf_set(struct udevice *dev, unsigned int pin,
+                               unsigned int param, unsigned int arg)
 {
        int ret;
 
@@ -190,7 +218,7 @@ static int uniphier_pinconf_group_set(struct udevice *dev,
        int i, ret;
 
        for (i = 0; i < grp->num_pins; i++) {
-               ret = uniphier_pinconf_set_one(dev, grp->pins[i], param, arg);
+               ret = uniphier_pinconf_set(dev, grp->pins[i], param, arg);
                if (ret)
                        return ret;
        }
@@ -268,6 +296,8 @@ static int uniphier_pinmux_group_set(struct udevice *dev,
 }
 
 const struct pinctrl_ops uniphier_pinctrl_ops = {
+       .get_pins_count = uniphier_pinctrl_get_pins_count,
+       .get_pin_name = uniphier_pinctrl_get_pin_name,
        .get_groups_count = uniphier_pinctrl_get_groups_count,
        .get_group_name = uniphier_pinctrl_get_group_name,
        .get_functions_count = uniphier_pinmux_get_functions_count,
@@ -276,6 +306,7 @@ const struct pinctrl_ops uniphier_pinctrl_ops = {
 #if CONFIG_IS_ENABLED(PINCONF)
        .pinconf_num_params = ARRAY_SIZE(uniphier_pinconf_params),
        .pinconf_params = uniphier_pinconf_params,
+       .pinconf_set = uniphier_pinconf_set,
        .pinconf_group_set = uniphier_pinconf_group_set,
 #endif
        .set_state = pinctrl_generic_set_state,

diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index 55f2b1a4d56903621d51466bffde4863c647b6ed..b3257f430d45d9a8c5dcc26575c7329a2c34df90 100644 (file)
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -27,7 +27,8 @@ static inline unsigned int uniphier_pin_get_iectrl(unsigned long data)
  */
 struct uniphier_pinctrl_pin {
        unsigned number;
-       unsigned long data;
+       const char *name;
+       unsigned int data;
 };
 
 /**