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// 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,
};
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