pinctrl: fix Kconfig dependencies

- Remove OFDEVICE dependency from PINCTRL. It won't do
  much then, so add a comment to Kconfig when PINCTRL is
  selected without OFDEVICE
- Let Architectures only select PINCTRL instead of the
  particular driver. Change the drivers to 'default y if $SOC'
  to make sure the drivers are still compiled if the corresponding
  SoC is selected

This fixes Kconfig warnings like:

warning: (PINCTRL_ARMADA_370 && PINCTRL_ARMADA_XP && PINCTRL_DOVE && PINCTRL_KIRKWOOD) selects PINCTRL which has unmet direct dependencies (OFDEVICE)

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl.c b/drivers/pinctrl/pinctrl.c
index 8963ac75c0..d6479b9cd5 100644
--- a/drivers/pinctrl/pinctrl.c
+++ b/drivers/pinctrl/pinctrl.c
@@ -62,6 +62,9 @@ int of_pinctrl_select_state(struct device_node *np, const char *name)
 	struct device_node *np_config;
 	const char *statename;
 
+	if (!IS_ENABLED(CONFIG_PINCTRL))
+		return -ENOSYS;
+
 	if (!of_find_property(np, "pinctrl-0", NULL))
 		return 0;
 
@@ -146,6 +149,9 @@ int pinctrl_select_state_default(struct device_d *dev)
 
 int pinctrl_register(struct pinctrl_device *pdev)
 {
+	if (!IS_ENABLED(CONFIG_PINCTRL))
+		return -ENOSYS;
+
 	BUG_ON(!pdev->dev->device_node);
 
 	list_add_tail(&pdev->list, &pinctrl_list);