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 601a42d..916d051 100644
--- 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 @@
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 @@
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 @@
}
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 @@
#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 55f2b1a..b3257f4 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -27,7 +27,8 @@
*/
struct uniphier_pinctrl_pin {
unsigned number;
- unsigned long data;
+ const char *name;
+ unsigned int data;
};
/**