| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * (C) Copyright 2019 Rockchip Electronics Co., Ltd |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <log.h> |
| #include <dm/pinctrl.h> |
| #include <regmap.h> |
| #include <syscon.h> |
| #include <linux/bitops.h> |
| |
| #include "pinctrl-rockchip.h" |
| |
| static struct rockchip_mux_recalced_data rk3308_mux_recalced_data[] = { |
| { |
| .num = 1, |
| .pin = 14, |
| .reg = 0x28, |
| .bit = 12, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 15, |
| .reg = 0x2c, |
| .bit = 0, |
| .mask = 0x3 |
| }, { |
| .num = 1, |
| .pin = 18, |
| .reg = 0x30, |
| .bit = 4, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 19, |
| .reg = 0x30, |
| .bit = 8, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 20, |
| .reg = 0x30, |
| .bit = 12, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 21, |
| .reg = 0x34, |
| .bit = 0, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 22, |
| .reg = 0x34, |
| .bit = 4, |
| .mask = 0xf |
| }, { |
| .num = 1, |
| .pin = 23, |
| .reg = 0x34, |
| .bit = 8, |
| .mask = 0xf |
| }, { |
| .num = 3, |
| .pin = 12, |
| .reg = 0x68, |
| .bit = 8, |
| .mask = 0xf |
| }, { |
| .num = 3, |
| .pin = 13, |
| .reg = 0x68, |
| .bit = 12, |
| .mask = 0xf |
| }, { |
| .num = 2, |
| .pin = 2, |
| .reg = 0x608, |
| .bit = 0, |
| .mask = 0x7 |
| }, { |
| .num = 2, |
| .pin = 3, |
| .reg = 0x608, |
| .bit = 4, |
| .mask = 0x7 |
| }, { |
| .num = 2, |
| .pin = 16, |
| .reg = 0x610, |
| .bit = 8, |
| .mask = 0x7 |
| }, { |
| .num = 3, |
| .pin = 10, |
| .reg = 0x610, |
| .bit = 0, |
| .mask = 0x7 |
| }, { |
| .num = 3, |
| .pin = 11, |
| .reg = 0x610, |
| .bit = 4, |
| .mask = 0x7 |
| }, |
| }; |
| |
| static struct rockchip_mux_route_data rk3308_mux_route_data[] = { |
| { |
| /* rtc_clk */ |
| .bank_num = 0, |
| .pin = 19, |
| .func = 1, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 0) | BIT(0), |
| }, { |
| /* uart2_rxm0 */ |
| .bank_num = 1, |
| .pin = 22, |
| .func = 2, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 2) | BIT(16 + 3), |
| }, { |
| /* uart2_rxm1 */ |
| .bank_num = 4, |
| .pin = 26, |
| .func = 2, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 2) | BIT(16 + 3) | BIT(2), |
| }, { |
| /* i2c3_sdam0 */ |
| .bank_num = 0, |
| .pin = 15, |
| .func = 2, |
| .route_offset = 0x608, |
| .route_val = BIT(16 + 8) | BIT(16 + 9), |
| }, { |
| /* i2c3_sdam1 */ |
| .bank_num = 3, |
| .pin = 12, |
| .func = 2, |
| .route_offset = 0x608, |
| .route_val = BIT(16 + 8) | BIT(16 + 9) | BIT(8), |
| }, { |
| /* i2c3_sdam2 */ |
| .bank_num = 2, |
| .pin = 0, |
| .func = 3, |
| .route_offset = 0x608, |
| .route_val = BIT(16 + 8) | BIT(16 + 9) | BIT(9), |
| }, { |
| /* i2s-8ch-1-sclktxm0 */ |
| .bank_num = 1, |
| .pin = 3, |
| .func = 2, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 3), |
| }, { |
| /* i2s-8ch-1-sclkrxm0 */ |
| .bank_num = 1, |
| .pin = 4, |
| .func = 2, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 3), |
| }, { |
| /* i2s-8ch-1-sclktxm1 */ |
| .bank_num = 1, |
| .pin = 13, |
| .func = 2, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 3) | BIT(3), |
| }, { |
| /* i2s-8ch-1-sclkrxm1 */ |
| .bank_num = 1, |
| .pin = 14, |
| .func = 2, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 3) | BIT(3), |
| }, { |
| /* pdm-clkm0 */ |
| .bank_num = 1, |
| .pin = 4, |
| .func = 3, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 12) | BIT(16 + 13), |
| }, { |
| /* pdm-clkm1 */ |
| .bank_num = 1, |
| .pin = 14, |
| .func = 4, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 12) | BIT(16 + 13) | BIT(12), |
| }, { |
| /* pdm-clkm2 */ |
| .bank_num = 2, |
| .pin = 6, |
| .func = 2, |
| .route_offset = 0x308, |
| .route_val = BIT(16 + 12) | BIT(16 + 13) | BIT(13), |
| }, { |
| /* pdm-clkm-m2 */ |
| .bank_num = 2, |
| .pin = 4, |
| .func = 3, |
| .route_offset = 0x600, |
| .route_val = BIT(16 + 2) | BIT(2), |
| }, { |
| /* spi1_miso */ |
| .bank_num = 3, |
| .pin = 10, |
| .func = 3, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 9), |
| }, { |
| /* spi1_miso_m1 */ |
| .bank_num = 2, |
| .pin = 4, |
| .func = 2, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 9) | BIT(9), |
| }, { |
| /* mac_rxd0_m0 */ |
| .bank_num = 1, |
| .pin = 20, |
| .func = 3, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 14), |
| }, { |
| /* mac_rxd0_m1 */ |
| .bank_num = 4, |
| .pin = 2, |
| .func = 2, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 14) | BIT(14), |
| }, { |
| /* uart3_rx */ |
| .bank_num = 3, |
| .pin = 12, |
| .func = 4, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 15), |
| }, { |
| /* uart3_rx_m1 */ |
| .bank_num = 0, |
| .pin = 17, |
| .func = 3, |
| .route_offset = 0x314, |
| .route_val = BIT(16 + 15) | BIT(15), |
| }, |
| }; |
| |
| static int rk3308_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, ret, mask, mux_type; |
| u8 bit; |
| u32 data, route_reg, route_val; |
| |
| regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU) |
| ? priv->regmap_pmu : priv->regmap_base; |
| |
| /* get basic quadrupel of mux registers and the correct reg inside */ |
| mux_type = bank->iomux[iomux_num].type; |
| reg = bank->iomux[iomux_num].offset; |
| reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask); |
| |
| if (bank->recalced_mask & BIT(pin)) |
| rockchip_get_recalced_mux(bank, pin, ®, &bit, &mask); |
| |
| if (bank->route_mask & BIT(pin)) { |
| if (rockchip_get_mux_route(bank, pin, mux, &route_reg, |
| &route_val)) { |
| ret = regmap_write(regmap, route_reg, route_val); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| data = (mask << (bit + 16)); |
| data |= (mux & mask) << bit; |
| ret = regmap_write(regmap, reg, data); |
| |
| return ret; |
| } |
| |
| #define RK3308_PULL_OFFSET 0xa0 |
| |
| static void rk3308_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 = RK3308_PULL_OFFSET; |
| *reg += bank->bank_num * ROCKCHIP_PULL_BANK_STRIDE; |
| *reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4); |
| |
| *bit = (pin_num % ROCKCHIP_PULL_PINS_PER_REG); |
| *bit *= ROCKCHIP_PULL_BITS_PER_PIN; |
| } |
| |
| static int rk3308_set_pull(struct rockchip_pin_bank *bank, |
| int pin_num, int pull) |
| { |
| struct regmap *regmap; |
| int reg, ret; |
| u8 bit, type; |
| u32 data; |
| |
| if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) |
| return -ENOTSUPP; |
| |
| rk3308_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 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16); |
| data |= (ret << bit); |
| |
| ret = regmap_write(regmap, reg, data); |
| |
| return ret; |
| } |
| |
| #define RK3308_DRV_GRF_OFFSET 0x100 |
| |
| static void rk3308_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; |
| *reg = RK3308_DRV_GRF_OFFSET; |
| *reg += bank->bank_num * ROCKCHIP_DRV_BANK_STRIDE; |
| *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4); |
| |
| *bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG); |
| *bit *= ROCKCHIP_DRV_BITS_PER_PIN; |
| } |
| |
| static int rk3308_set_drive(struct rockchip_pin_bank *bank, |
| int pin_num, int strength) |
| { |
| struct regmap *regmap; |
| int reg, ret; |
| u32 data; |
| u8 bit; |
| int type = bank->drv[pin_num / 8].drv_type; |
| |
| rk3308_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); |
| ret = rockchip_translate_drive_value(type, strength); |
| if (ret < 0) { |
| debug("unsupported driver strength %d\n", strength); |
| return ret; |
| } |
| |
| /* enable the write to the equivalent lower bits */ |
| data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16); |
| data |= (ret << bit); |
| ret = regmap_write(regmap, reg, data); |
| return ret; |
| } |
| |
| #define RK3308_SCHMITT_PINS_PER_REG 8 |
| #define RK3308_SCHMITT_BANK_STRIDE 16 |
| #define RK3308_SCHMITT_GRF_OFFSET 0x1a0 |
| |
| static int rk3308_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; |
| *reg = RK3308_SCHMITT_GRF_OFFSET; |
| |
| *reg += bank->bank_num * RK3308_SCHMITT_BANK_STRIDE; |
| *reg += ((pin_num / RK3308_SCHMITT_PINS_PER_REG) * 4); |
| *bit = pin_num % RK3308_SCHMITT_PINS_PER_REG; |
| |
| return 0; |
| } |
| |
| static int rk3308_set_schmitt(struct rockchip_pin_bank *bank, |
| int pin_num, int enable) |
| { |
| struct regmap *regmap; |
| int reg; |
| u8 bit; |
| u32 data; |
| |
| rk3308_calc_schmitt_reg_and_bit(bank, pin_num, ®map, ®, &bit); |
| /* enable the write to the equivalent lower bits */ |
| data = BIT(bit + 16) | (enable << bit); |
| |
| return regmap_write(regmap, reg, data); |
| } |
| |
| static struct rockchip_pin_bank rk3308_pin_banks[] = { |
| PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT), |
| PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT), |
| PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT), |
| PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT), |
| PIN_BANK_IOMUX_FLAGS(4, 32, "gpio4", IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT, |
| IOMUX_8WIDTH_2BIT), |
| }; |
| |
| static struct rockchip_pin_ctrl rk3308_pin_ctrl = { |
| .pin_banks = rk3308_pin_banks, |
| .nr_banks = ARRAY_SIZE(rk3308_pin_banks), |
| .grf_mux_offset = 0x0, |
| .iomux_recalced = rk3308_mux_recalced_data, |
| .niomux_recalced = ARRAY_SIZE(rk3308_mux_recalced_data), |
| .iomux_routes = rk3308_mux_route_data, |
| .niomux_routes = ARRAY_SIZE(rk3308_mux_route_data), |
| .set_mux = rk3308_set_mux, |
| .set_drive = rk3308_set_drive, |
| .set_pull = rk3308_set_pull, |
| .set_schmitt = rk3308_set_schmitt, |
| }; |
| |
| static const struct udevice_id rk3308_pinctrl_ids[] = { |
| { |
| .compatible = "rockchip,rk3308-pinctrl", |
| .data = (ulong)&rk3308_pin_ctrl |
| }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(pinctrl_rk3308) = { |
| .name = "rockchip_rk3308_pinctrl", |
| .id = UCLASS_PINCTRL, |
| .of_match = rk3308_pinctrl_ids, |
| .priv_auto = 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, |
| }; |