pinctrl: uniphier: support per-pin input enable for new SoCs
Upcoming new pinctrl drivers for PH1-LD11 and PH-LD20 support input
signal gating for each pin. (While, existing ones only support it
per pin-group.) This commit prepares the core part for that.
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 bb7a088..b8e26d9 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
@@ -44,7 +44,23 @@
return priv->socdata->functions[selector];
}
-static void uniphier_pinconf_input_enable(struct udevice *dev, unsigned pin)
+static void uniphier_pinconf_input_enable_perpin(struct udevice *dev,
+ unsigned pin)
+{
+ struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
+ unsigned reg;
+ u32 mask, tmp;
+
+ reg = UNIPHIER_PINCTRL_IECTRL + pin / 32 * 4;
+ mask = BIT(pin % 32);
+
+ tmp = readl(priv->base + reg);
+ tmp |= mask;
+ writel(tmp, priv->base + reg);
+}
+
+static void uniphier_pinconf_input_enable_legacy(struct udevice *dev,
+ unsigned pin)
{
struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
int pins_count = priv->socdata->pins_count;
@@ -64,6 +80,16 @@
}
}
+static void uniphier_pinconf_input_enable(struct udevice *dev, unsigned pin)
+{
+ struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
+
+ if (priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL)
+ uniphier_pinconf_input_enable_perpin(dev, pin);
+ else
+ uniphier_pinconf_input_enable_legacy(dev, pin);
+}
+
static void uniphier_pinmux_set_one(struct udevice *dev, unsigned pin,
unsigned muxval)
{
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier.h b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
index d582317..2b43848 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier.h
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier.h
@@ -70,6 +70,7 @@
const char * const *functions;
int functions_count;
unsigned caps;
+#define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(1)
#define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(0)
};