pinctrl: rockchip: Add common rockchip pinctrl driver
Use this driver to fit all Rockchip SOCs and to support
the desired pinctrl configuration via DTS.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3036.c b/drivers/pinctrl/rockchip/pinctrl-rk3036.c
new file mode 100644
index 0000000..2729b03
--- /dev/null
+++ b/drivers/pinctrl/rockchip/pinctrl-rk3036.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/pinctrl.h>
+#include <regmap.h>
+#include <syscon.h>
+
+#include "pinctrl-rockchip.h"
+
+#define RK3036_PULL_OFFSET 0x118
+#define RK3036_PULL_PINS_PER_REG 16
+#define RK3036_PULL_BANK_STRIDE 8
+
+static void rk3036_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
+ int pin_num, struct regmap **regmap,
+ int *reg, u8 *bit)
+{
+ struct rockchip_pinctrl_priv *priv = bank->priv;
+
+ *regmap = priv->regmap_base;
+ *reg = RK3036_PULL_OFFSET;
+ *reg += bank->bank_num * RK3036_PULL_BANK_STRIDE;
+ *reg += (pin_num / RK3036_PULL_PINS_PER_REG) * 4;
+
+ *bit = pin_num % RK3036_PULL_PINS_PER_REG;
+};
+
+static struct rockchip_pin_bank rk3036_pin_banks[] = {
+ PIN_BANK(0, 32, "gpio0"),
+ PIN_BANK(1, 32, "gpio1"),
+ PIN_BANK(2, 32, "gpio2"),
+};
+
+static struct rockchip_pin_ctrl rk3036_pin_ctrl = {
+ .pin_banks = rk3036_pin_banks,
+ .nr_banks = ARRAY_SIZE(rk3036_pin_banks),
+ .label = "RK3036-GPIO",
+ .type = RK3036,
+ .grf_mux_offset = 0xa8,
+ .pull_calc_reg = rk3036_calc_pull_reg_and_bit,
+};
+
+static const struct udevice_id rk3036_pinctrl_ids[] = {
+ {
+ .compatible = "rockchip,rk3036-pinctrl",
+ .data = (ulong)&rk3036_pin_ctrl
+ },
+ {}
+};
+
+U_BOOT_DRIVER(pinctrl_rockchip) = {
+ .name = "rk3036-pinctrl",
+ .id = UCLASS_PINCTRL,
+ .of_match = rk3036_pinctrl_ids,
+ .priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv),
+ .ops = &rockchip_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+ .bind = dm_scan_fdt_dev,
+#endif
+ .probe = rockchip_pinctrl_probe,
+};