pinctrl: gpio: vt8500: Add pincontrol driver for arch-vt8500

This patch adds support for the GPIO/pinmux controller found on the VIA
VT8500 and Wondermedia WM8xxx-series SoCs.

Each pin within the controller is capable of operating as a GPIO or as
an alternate function. The pins are numbered according to their control
bank/bit so that if new pins are added, the existing numbering is maintained.

All currently supported SoCs are included: VT8500, WM8505, WM8650, WM8750 and
WM8850.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 52 insertions, 0 deletions

diff --git a/drivers/pinctrl/vt8500/Kconfig b/drivers/pinctrl/vt8500/Kconfig
new file mode 100644
index 000000000000..55724a73d94a
--- /dev/null
+++ b/drivers/pinctrl/vt8500/Kconfig
@@ -0,0 +1,52 @@
+#
+# VIA/Wondermedia PINCTRL drivers
+#
+
+if ARCH_VT8500
+
+config PINCTRL_WMT
+        bool
+        select PINMUX
+        select GENERIC_PINCONF
+
+config PINCTRL_VT8500
+        bool "VIA VT8500 pin controller driver"
+        depends on ARCH_WM8505
+        select PINCTRL_WMT
+        help
+          Say yes here to support the gpio/pin control module on
+          VIA VT8500 SoCs.
+
+config PINCTRL_WM8505
+        bool "Wondermedia WM8505 pin controller driver"
+        depends on ARCH_WM8505
+        select PINCTRL_WMT
+        help
+          Say yes here to support the gpio/pin control module on
+          Wondermedia WM8505 SoCs.
+
+config PINCTRL_WM8650
+        bool "Wondermedia WM8650 pin controller driver"
+        depends on ARCH_WM8505
+        select PINCTRL_WMT
+        help
+          Say yes here to support the gpio/pin control module on
+          Wondermedia WM8650 SoCs.
+
+config PINCTRL_WM8750
+        bool "Wondermedia WM8750 pin controller driver"
+        depends on ARCH_WM8750
+        select PINCTRL_WMT
+        help
+          Say yes here to support the gpio/pin control module on
+          Wondermedia WM8750 SoCs.
+
+config PINCTRL_WM8850
+        bool "Wondermedia WM8850 pin controller driver"
+        depends on ARCH_WM8850
+        select PINCTRL_WMT
+        help
+          Say yes here to support the gpio/pin control module on
+          Wondermedia WM8850 SoCs.
+
+endif