[PATCH 3/4] pinctrl: mediatek: do not probe gpio driver if not enabled

[Weijie Gao]

The mtk pinctrl driver is a combination driver with support for both
pinctrl and gpio. When this driver is used in SPL, gpio support may not be
enabled, and this will result in a compilation error.

To fix this, macros are added to make sure gpio related code will only be
compiled when gpio support is enabled.

Signed-off-by: Weijie Gao <weijie....@mediatek.com>
---
 drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c 
b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index b2212c2559..264c6458c9 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -540,6 +540,8 @@ const struct pinctrl_ops mtk_pinctrl_ops = {
        .set_state = pinctrl_generic_set_state,
 };
 
+#if CONFIG_IS_ENABLED(DM_GPIO) || \
+    (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
 static int mtk_gpio_get(struct udevice *dev, unsigned int off)
 {
        int val, err;
@@ -647,12 +649,13 @@ static int mtk_gpiochip_register(struct udevice *parent)
 
        return 0;
 }
+#endif
 
 int mtk_pinctrl_common_probe(struct udevice *dev,
                             struct mtk_pinctrl_soc *soc)
 {
        struct mtk_pinctrl_priv *priv = dev_get_priv(dev);
-       int ret;
+       int ret = 0;
 
        priv->base = dev_read_addr_ptr(dev);
        if (!priv->base)
@@ -660,9 +663,10 @@ int mtk_pinctrl_common_probe(struct udevice *dev,
 
        priv->soc = soc;
 
+#if CONFIG_IS_ENABLED(DM_GPIO) || \
+    (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
        ret = mtk_gpiochip_register(dev);
-       if (ret)
-               return ret;
+#endif
 
-       return 0;
+       return ret;
 }
-- 
2.17.1