1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2019 Rockchip Electronics Co., Ltd 4 */ 5 6 #include <common.h> 7 #include <dm.h> 8 #include <dm/pinctrl.h> 9 #include <regmap.h> 10 #include <syscon.h> 11 12 #include "pinctrl-rockchip.h" 13 14 #define RK3188_PULL_OFFSET 0x164 15 #define RK3188_PULL_PMU_OFFSET 0x64 16 17 static void rk3188_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, 18 int pin_num, struct regmap **regmap, 19 int *reg, u8 *bit) 20 { 21 struct rockchip_pinctrl_priv *priv = bank->priv; 22 23 /* The first 12 pins of the first bank are located elsewhere */ 24 if (bank->bank_num == 0 && pin_num < 12) { 25 *regmap = priv->regmap_pmu; 26 *reg = RK3188_PULL_PMU_OFFSET; 27 28 *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4); 29 *bit = pin_num % ROCKCHIP_PULL_PINS_PER_REG; 30 *bit *= ROCKCHIP_PULL_BITS_PER_PIN; 31 } else { 32 *regmap = priv->regmap_base; 33 *reg = RK3188_PULL_OFFSET; 34 35 /* correct the offset, as it is the 2nd pull register */ 36 *reg -= 4; 37 *reg += bank->bank_num * ROCKCHIP_PULL_BANK_STRIDE; 38 *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4); 39 40 /* 41 * The bits in these registers have an inverse ordering 42 * with the lowest pin being in bits 15:14 and the highest 43 * pin in bits 1:0 44 */ 45 *bit = 7 - (pin_num % ROCKCHIP_PULL_PINS_PER_REG); 46 *bit *= ROCKCHIP_PULL_BITS_PER_PIN; 47 } 48 } 49 50 static struct rockchip_pin_bank rk3188_pin_banks[] = { 51 PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_GPIO_ONLY, 0, 0, 0), 52 PIN_BANK(1, 32, "gpio1"), 53 PIN_BANK(2, 32, "gpio2"), 54 PIN_BANK(3, 32, "gpio3"), 55 }; 56 57 static struct rockchip_pin_ctrl rk3188_pin_ctrl = { 58 .pin_banks = rk3188_pin_banks, 59 .nr_banks = ARRAY_SIZE(rk3188_pin_banks), 60 .label = "RK3188-GPIO", 61 .type = RK3188, 62 .grf_mux_offset = 0x60, 63 .pull_calc_reg = rk3188_calc_pull_reg_and_bit, 64 }; 65 66 static const struct udevice_id rk3188_pinctrl_ids[] = { 67 { .compatible = "rockchip,rk3188-pinctrl", 68 .data = (ulong)&rk3188_pin_ctrl }, 69 { } 70 }; 71 72 U_BOOT_DRIVER(pinctrl_rk3188) = { 73 .name = "rockchip_rk3188_pinctrl", 74 .id = UCLASS_PINCTRL, 75 .of_match = rk3188_pinctrl_ids, 76 .priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv), 77 .ops = &rockchip_pinctrl_ops, 78 #if !CONFIG_IS_ENABLED(OF_PLATDATA) 79 .bind = dm_scan_fdt_dev, 80 #endif 81 .probe = rockchip_pinctrl_probe, 82 }; 83