| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) 2022 Rockchip Electronics Co., Ltd. |
| */ |
| |
| #include <dm.h> |
| #include <dm/pinctrl.h> |
| #include <regmap.h> |
| #include <syscon.h> |
| |
| #include "pinctrl-rockchip.h" |
| #include <dt-bindings/pinctrl/rockchip.h> |
| |
| static int rk3528_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) |
| { |
| struct rockchip_pinctrl_priv *priv = bank->priv; |
| int iomux_num = (pin / 8); |
| struct regmap *regmap; |
| int reg, mask; |
| u8 bit; |
| u32 data, rmask; |
| |
| regmap = priv->regmap_base; |
| reg = bank->iomux[iomux_num].offset; |
| if ((pin % 8) >= 4) |
| reg += 0x4; |
| bit = (pin % 4) * 4; |
| mask = 0xf; |
| |
| data = (mask << (bit + 16)); |
| rmask = data | (data >> 16); |
| data |= (mux & mask) << bit; |
| |
| return regmap_update_bits(regmap, reg, rmask, data); |
| } |
| |
| #define RK3528_DRV_BITS_PER_PIN 8 |
| #define RK3528_DRV_PINS_PER_REG 2 |
| #define RK3528_DRV_GPIO0_OFFSET 0x100 |
| #define RK3528_DRV_GPIO1_OFFSET 0x20120 |
| #define RK3528_DRV_GPIO2_OFFSET 0x30160 |
| #define RK3528_DRV_GPIO3_OFFSET 0x20190 |
| #define RK3528_DRV_GPIO4_OFFSET 0x101C0 |
| |
| static void rk3528_calc_drv_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; |
| |
| if (bank->bank_num == 0) { |
| *reg = RK3528_DRV_GPIO0_OFFSET; |
| } else if (bank->bank_num == 1) { |
| *reg = RK3528_DRV_GPIO1_OFFSET; |
| } else if (bank->bank_num == 2) { |
| *reg = RK3528_DRV_GPIO2_OFFSET; |
| } else if (bank->bank_num == 3) { |
| *reg = RK3528_DRV_GPIO3_OFFSET; |
| } else if (bank->bank_num == 4) { |
| *reg = RK3528_DRV_GPIO4_OFFSET; |
| } else { |
| *reg = 0; |
| debug("unsupported bank_num %d\n", bank->bank_num); |
| } |
| |
| *reg += ((pin_num / RK3528_DRV_PINS_PER_REG) * 4); |
| *bit = pin_num % RK3528_DRV_PINS_PER_REG; |
| *bit *= RK3528_DRV_BITS_PER_PIN; |
| } |
| |
| static int rk3528_set_drive(struct rockchip_pin_bank *bank, |
| int pin_num, int strength) |
| { |
| struct regmap *regmap; |
| int reg; |
| u32 data, rmask; |
| u8 bit; |
| int drv = (1 << (strength + 1)) - 1; |
| |
| rk3528_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); |
| |
| /* enable the write to the equivalent lower bits */ |
| data = ((1 << RK3528_DRV_BITS_PER_PIN) - 1) << (bit + 16); |
| rmask = data | (data >> 16); |
| data |= (drv << bit); |
| |
| return regmap_update_bits(regmap, reg, rmask, data); |
| } |
| |
| #define RK3528_PULL_BITS_PER_PIN 2 |
| #define RK3528_PULL_PINS_PER_REG 8 |
| #define RK3528_PULL_GPIO0_OFFSET 0x200 |
| #define RK3528_PULL_GPIO1_OFFSET 0x20210 |
| #define RK3528_PULL_GPIO2_OFFSET 0x30220 |
| #define RK3528_PULL_GPIO3_OFFSET 0x20230 |
| #define RK3528_PULL_GPIO4_OFFSET 0x10240 |
| |
| static void rk3528_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; |
| |
| if (bank->bank_num == 0) { |
| *reg = RK3528_PULL_GPIO0_OFFSET; |
| } else if (bank->bank_num == 1) { |
| *reg = RK3528_PULL_GPIO1_OFFSET; |
| } else if (bank->bank_num == 2) { |
| *reg = RK3528_PULL_GPIO2_OFFSET; |
| } else if (bank->bank_num == 3) { |
| *reg = RK3528_PULL_GPIO3_OFFSET; |
| } else if (bank->bank_num == 4) { |
| *reg = RK3528_PULL_GPIO4_OFFSET; |
| } else { |
| *reg = 0; |
| debug("unsupported bank_num %d\n", bank->bank_num); |
| } |
| |
| *reg += ((pin_num / RK3528_PULL_PINS_PER_REG) * 4); |
| *bit = pin_num % RK3528_PULL_PINS_PER_REG; |
| *bit *= RK3528_PULL_BITS_PER_PIN; |
| } |
| |
| static int rk3528_set_pull(struct rockchip_pin_bank *bank, |
| int pin_num, int pull) |
| { |
| struct regmap *regmap; |
| int reg, ret; |
| u8 bit, type; |
| u32 data, rmask; |
| |
| if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) |
| return -EOPNOTSUPP; |
| |
| rk3528_calc_pull_reg_and_bit(bank, pin_num, ®map, ®, &bit); |
| type = bank->pull_type[pin_num / 8]; |
| ret = rockchip_translate_pull_value(type, pull); |
| if (ret < 0) { |
| debug("unsupported pull setting %d\n", pull); |
| return ret; |
| } |
| |
| /* enable the write to the equivalent lower bits */ |
| data = ((1 << RK3528_PULL_BITS_PER_PIN) - 1) << (bit + 16); |
| rmask = data | (data >> 16); |
| data |= (ret << bit); |
| |
| return regmap_update_bits(regmap, reg, rmask, data); |
| } |
| |
| #define RK3528_SMT_BITS_PER_PIN 1 |
| #define RK3528_SMT_PINS_PER_REG 8 |
| #define RK3528_SMT_GPIO0_OFFSET 0x400 |
| #define RK3528_SMT_GPIO1_OFFSET 0x20410 |
| #define RK3528_SMT_GPIO2_OFFSET 0x30420 |
| #define RK3528_SMT_GPIO3_OFFSET 0x20430 |
| #define RK3528_SMT_GPIO4_OFFSET 0x10440 |
| |
| static int rk3528_calc_schmitt_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; |
| |
| if (bank->bank_num == 0) { |
| *reg = RK3528_SMT_GPIO0_OFFSET; |
| } else if (bank->bank_num == 1) { |
| *reg = RK3528_SMT_GPIO1_OFFSET; |
| } else if (bank->bank_num == 2) { |
| *reg = RK3528_SMT_GPIO2_OFFSET; |
| } else if (bank->bank_num == 3) { |
| *reg = RK3528_SMT_GPIO3_OFFSET; |
| } else if (bank->bank_num == 4) { |
| *reg = RK3528_SMT_GPIO4_OFFSET; |
| } else { |
| *reg = 0; |
| debug("unsupported bank_num %d\n", bank->bank_num); |
| } |
| |
| *reg += ((pin_num / RK3528_SMT_PINS_PER_REG) * 4); |
| *bit = pin_num % RK3528_SMT_PINS_PER_REG; |
| *bit *= RK3528_SMT_BITS_PER_PIN; |
| |
| return 0; |
| } |
| |
| static int rk3528_set_schmitt(struct rockchip_pin_bank *bank, |
| int pin_num, int enable) |
| { |
| struct regmap *regmap; |
| int reg; |
| u32 data, rmask; |
| u8 bit; |
| |
| rk3528_calc_schmitt_reg_and_bit(bank, pin_num, ®map, ®, &bit); |
| |
| /* enable the write to the equivalent lower bits */ |
| data = ((1 << RK3528_SMT_BITS_PER_PIN) - 1) << (bit + 16); |
| rmask = data | (data >> 16); |
| data |= (enable << bit); |
| |
| return regmap_update_bits(regmap, reg, rmask, data); |
| } |
| |
| static struct rockchip_pin_bank rk3528_pin_banks[] = { |
| PIN_BANK_IOMUX_FLAGS_OFFSET(0, 32, "gpio0", |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| 0, 0, 0, 0), |
| PIN_BANK_IOMUX_FLAGS_OFFSET(1, 32, "gpio1", |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| 0x20020, 0x20028, 0x20030, 0x20038), |
| PIN_BANK_IOMUX_FLAGS_OFFSET(2, 32, "gpio2", |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| 0x30040, 0, 0, 0), |
| PIN_BANK_IOMUX_FLAGS_OFFSET(3, 32, "gpio3", |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| 0x20060, 0x20068, 0x20070, 0), |
| PIN_BANK_IOMUX_FLAGS_OFFSET(4, 32, "gpio4", |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| IOMUX_WIDTH_4BIT, |
| 0x10080, 0x10088, 0x10090, 0x10098), |
| }; |
| |
| static const struct rockchip_pin_ctrl rk3528_pin_ctrl = { |
| .pin_banks = rk3528_pin_banks, |
| .nr_banks = ARRAY_SIZE(rk3528_pin_banks), |
| .grf_mux_offset = 0x0, |
| .set_mux = rk3528_set_mux, |
| .set_pull = rk3528_set_pull, |
| .set_drive = rk3528_set_drive, |
| .set_schmitt = rk3528_set_schmitt, |
| }; |
| |
| static const struct udevice_id rk3528_pinctrl_ids[] = { |
| { |
| .compatible = "rockchip,rk3528-pinctrl", |
| .data = (ulong)&rk3528_pin_ctrl |
| }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(rockchip_rk3528_pinctrl) = { |
| .name = "rockchip_rk3528_pinctrl", |
| .id = UCLASS_PINCTRL, |
| .of_match = rk3528_pinctrl_ids, |
| .priv_auto = sizeof(struct rockchip_pinctrl_priv), |
| .ops = &rockchip_pinctrl_ops, |
| #if CONFIG_IS_ENABLED(OF_REAL) |
| .bind = dm_scan_fdt_dev, |
| #endif |
| .probe = rockchip_pinctrl_probe, |
| }; |