pinctrl: add nexell driver
Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01:
- livetree API (dev_read_...) is used instead of fdt one (fdt...).
- doc/device-tree-bindings/pinctrl/nexell,s5pxx18-pinctrl.txt added.
Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
diff --git a/drivers/pinctrl/nexell/pinctrl-s5pxx18.h b/drivers/pinctrl/nexell/pinctrl-s5pxx18.h
new file mode 100644
index 0000000..843a00b
--- /dev/null
+++ b/drivers/pinctrl/nexell/pinctrl-s5pxx18.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ * Pinctrl driver for Nexell SoCs
+ * (C) Copyright 2016 Nexell
+ * Bongyu, KOO <freestyle@nexell.co.kr>
+ */
+
+#ifndef __PINCTRL_S5PXX18_H_
+#define __PINCTRL_S5PXX18_H_
+
+#include <linux/types.h>
+#include <asm/io.h>
+
+#define GPIOX_ALTFN0 0x20
+#define GPIOX_ALTFN1 0x24
+#define GPIOX_DRV1 0x48
+#define GPIOX_DRV0 0x50
+#define GPIOX_PULLSEL 0x58
+#define GPIOX_PULLENB 0x60
+
+#define GPIOX_SLEW_DISABLE_DEFAULT 0x44
+#define GPIOX_DRV1_DISABLE_DEFAULT 0x4C
+#define GPIOX_DRV0_DISABLE_DEFAULT 0x54
+#define GPIOX_PULLSEL_DISABLE_DEFAULT 0x5C
+#define GPIOX_PULLENB_DISABLE_DEFAULT 0x64
+
+#define ALIVE_PWRGATE 0x0
+#define ALIVE_PADPULLUPRST 0x80
+#define ALIVE_PADPULLUPSET 0x84
+#define ALIVE_PADPULLUPREAD 0x88
+
+enum {
+ nx_gpio_padfunc_0 = 0ul,
+ nx_gpio_padfunc_1 = 1ul,
+ nx_gpio_padfunc_2 = 2ul,
+ nx_gpio_padfunc_3 = 3ul
+};
+
+enum {
+ nx_gpio_drvstrength_0 = 0ul,
+ nx_gpio_drvstrength_1 = 1ul,
+ nx_gpio_drvstrength_2 = 2ul,
+ nx_gpio_drvstrength_3 = 3ul
+};
+
+enum {
+ nx_gpio_pull_down = 0ul,
+ nx_gpio_pull_up = 1ul,
+ nx_gpio_pull_off = 2ul
+};
+
+int s5pxx18_pinctrl_init(struct udevice *dev);
+#endif /* __PINCTRL_S5PXX18_H_ */