drivers/pinctrl/rockchip/pinctrl-rv1108.c - platform/external/u-boot - Gitiles

 // 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 rv1108_mux_recalced_data[] = {
 	{
 		.num = 1,
 		.pin = 0,
 		.reg = 0x418,
 		.bit = 0,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 1,
 		.reg = 0x418,
 		.bit = 2,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 2,
 		.reg = 0x418,
 		.bit = 4,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 3,
 		.reg = 0x418,
 		.bit = 6,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 4,
 		.reg = 0x418,
 		.bit = 8,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 5,
 		.reg = 0x418,
 		.bit = 10,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 6,
 		.reg = 0x418,
 		.bit = 12,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 7,
 		.reg = 0x418,
 		.bit = 14,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 8,
 		.reg = 0x41c,
 		.bit = 0,
 		.mask = 0x3
 	}, {
 		.num = 1,
 		.pin = 9,
 		.reg = 0x41c,
 		.bit = 2,
 		.mask = 0x3
 	},
 };

 static int rv1108_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;

 	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, &reg, &bit, &mask);

 	data = (mask << (bit + 16));
 	data |= (mux & mask) << bit;
 	ret = regmap_write(regmap, reg, data);

 	return ret;
 }

 #define RV1108_PULL_PMU_OFFSET		0x10
 #define RV1108_PULL_OFFSET		0x110

 static void rv1108_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;

 	/* The first 24 pins of the first bank are located in PMU */
 	if (bank->bank_num == 0) {
 		*regmap = priv->regmap_pmu;
 		*reg = RV1108_PULL_PMU_OFFSET;
 	} else {
 		*reg = RV1108_PULL_OFFSET;
 		*regmap = priv->regmap_base;
 		/* correct the offset, as we're starting with the 2nd bank */
 		*reg -= 0x10;
 		*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 rv1108_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;

 	rv1108_calc_pull_reg_and_bit(bank, pin_num, &regmap, &reg, &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 RV1108_DRV_PMU_OFFSET		0x20
 #define RV1108_DRV_GRF_OFFSET		0x210

 static void rv1108_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;

 	/* The first 24 pins of the first bank are located in PMU */
 	if (bank->bank_num == 0) {
 		*regmap = priv->regmap_pmu;
 		*reg = RV1108_DRV_PMU_OFFSET;
 	} else {
 		*regmap = priv->regmap_base;
 		*reg = RV1108_DRV_GRF_OFFSET;

 		/* correct the offset, as we're starting with the 2nd bank */
 		*reg -= 0x10;
 		*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 rv1108_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;

 	rv1108_calc_drv_reg_and_bit(bank, pin_num, &regmap, &reg, &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 RV1108_SCHMITT_PMU_OFFSET		0x30
 #define RV1108_SCHMITT_GRF_OFFSET		0x388
 #define RV1108_SCHMITT_BANK_STRIDE		8
 #define RV1108_SCHMITT_PINS_PER_GRF_REG		16
 #define RV1108_SCHMITT_PINS_PER_PMU_REG		8

 static int rv1108_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;
 	int pins_per_reg;

 	if (bank->bank_num == 0) {
 		*regmap = priv->regmap_pmu;
 		*reg = RV1108_SCHMITT_PMU_OFFSET;
 		pins_per_reg = RV1108_SCHMITT_PINS_PER_PMU_REG;
 	} else {
 		*regmap = priv->regmap_base;
 		*reg = RV1108_SCHMITT_GRF_OFFSET;
 		pins_per_reg = RV1108_SCHMITT_PINS_PER_GRF_REG;
 		*reg += (bank->bank_num  - 1) * RV1108_SCHMITT_BANK_STRIDE;
 	}
 	*reg += ((pin_num / pins_per_reg) * 4);
 	*bit = pin_num % pins_per_reg;

 	return 0;
 }

 static int rv1108_set_schmitt(struct rockchip_pin_bank *bank,
 			      int pin_num, int enable)
 {
 	struct regmap *regmap;
 	int reg;
 	u8 bit;
 	u32 data;

 	rv1108_calc_schmitt_reg_and_bit(bank, pin_num, &regmap, &reg, &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 rv1108_pin_banks[] = {
 	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
 					     IOMUX_SOURCE_PMU,
 					     IOMUX_SOURCE_PMU,
 					     IOMUX_SOURCE_PMU),
 	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
 	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
 };

 static struct rockchip_pin_ctrl rv1108_pin_ctrl = {
 	.pin_banks		= rv1108_pin_banks,
 	.nr_banks		= ARRAY_SIZE(rv1108_pin_banks),
 	.grf_mux_offset		= 0x10,
 	.pmu_mux_offset		= 0x0,
 	.iomux_recalced		= rv1108_mux_recalced_data,
 	.niomux_recalced	= ARRAY_SIZE(rv1108_mux_recalced_data),
 	.set_mux		= rv1108_set_mux,
 	.set_pull		= rv1108_set_pull,
 	.set_drive		= rv1108_set_drive,
 	.set_schmitt		= rv1108_set_schmitt,
 };

 static const struct udevice_id rv1108_pinctrl_ids[] = {
 	{
 		.compatible = "rockchip,rv1108-pinctrl",
 		.data = (ulong)&rv1108_pin_ctrl
 	},
 	{ }
 };

 U_BOOT_DRIVER(pinctrl_rv1108) = {
 	.name           = "pinctrl_rv1108",
 	.id             = UCLASS_PINCTRL,
 	.of_match       = rv1108_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,
 };
	// 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 rv1108_mux_recalced_data[] = {
	{
	.num = 1,
	.pin = 0,
	.reg = 0x418,
	.bit = 0,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 1,
	.reg = 0x418,
	.bit = 2,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 2,
	.reg = 0x418,
	.bit = 4,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 3,
	.reg = 0x418,
	.bit = 6,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 4,
	.reg = 0x418,
	.bit = 8,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 5,
	.reg = 0x418,
	.bit = 10,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 6,
	.reg = 0x418,
	.bit = 12,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 7,
	.reg = 0x418,
	.bit = 14,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 8,
	.reg = 0x41c,
	.bit = 0,
	.mask = 0x3
	}, {
	.num = 1,
	.pin = 9,
	.reg = 0x41c,
	.bit = 2,
	.mask = 0x3
	},
	};

	static int rv1108_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;

	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, &reg, &bit, &mask);

	data = (mask << (bit + 16));
	data \|= (mux & mask) << bit;
	ret = regmap_write(regmap, reg, data);

	return ret;
	}

	#define RV1108_PULL_PMU_OFFSET 0x10
	#define RV1108_PULL_OFFSET 0x110

	static void rv1108_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;

	/* The first 24 pins of the first bank are located in PMU */
	if (bank->bank_num == 0) {
	*regmap = priv->regmap_pmu;
	*reg = RV1108_PULL_PMU_OFFSET;
	} else {
	*reg = RV1108_PULL_OFFSET;
	*regmap = priv->regmap_base;
	/* correct the offset, as we're starting with the 2nd bank */
	*reg -= 0x10;
	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 rv1108_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;

	rv1108_calc_pull_reg_and_bit(bank, pin_num, &regmap, &reg, &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 RV1108_DRV_PMU_OFFSET 0x20
	#define RV1108_DRV_GRF_OFFSET 0x210

	static void rv1108_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;

	/* The first 24 pins of the first bank are located in PMU */
	if (bank->bank_num == 0) {
	*regmap = priv->regmap_pmu;
	*reg = RV1108_DRV_PMU_OFFSET;
	} else {
	*regmap = priv->regmap_base;
	*reg = RV1108_DRV_GRF_OFFSET;

	/* correct the offset, as we're starting with the 2nd bank */
	*reg -= 0x10;
	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 rv1108_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;

	rv1108_calc_drv_reg_and_bit(bank, pin_num, &regmap, &reg, &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 RV1108_SCHMITT_PMU_OFFSET 0x30
	#define RV1108_SCHMITT_GRF_OFFSET 0x388
	#define RV1108_SCHMITT_BANK_STRIDE 8
	#define RV1108_SCHMITT_PINS_PER_GRF_REG 16
	#define RV1108_SCHMITT_PINS_PER_PMU_REG 8

	static int rv1108_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;
	int pins_per_reg;

	if (bank->bank_num == 0) {
	*regmap = priv->regmap_pmu;
	*reg = RV1108_SCHMITT_PMU_OFFSET;
	pins_per_reg = RV1108_SCHMITT_PINS_PER_PMU_REG;
	} else {
	*regmap = priv->regmap_base;
	*reg = RV1108_SCHMITT_GRF_OFFSET;
	pins_per_reg = RV1108_SCHMITT_PINS_PER_GRF_REG;
	reg += (bank->bank_num - 1) RV1108_SCHMITT_BANK_STRIDE;
	}
	reg += ((pin_num / pins_per_reg) 4);
	*bit = pin_num % pins_per_reg;

	return 0;
	}

	static int rv1108_set_schmitt(struct rockchip_pin_bank *bank,
	int pin_num, int enable)
	{
	struct regmap *regmap;
	int reg;
	u8 bit;
	u32 data;

	rv1108_calc_schmitt_reg_and_bit(bank, pin_num, &regmap, &reg, &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 rv1108_pin_banks[] = {
	PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
	IOMUX_SOURCE_PMU,
	IOMUX_SOURCE_PMU,
	IOMUX_SOURCE_PMU),
	PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
	PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0, 0, 0, 0),
	PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3", 0, 0, 0, 0),
	};

	static struct rockchip_pin_ctrl rv1108_pin_ctrl = {
	.pin_banks = rv1108_pin_banks,
	.nr_banks = ARRAY_SIZE(rv1108_pin_banks),
	.grf_mux_offset = 0x10,
	.pmu_mux_offset = 0x0,
	.iomux_recalced = rv1108_mux_recalced_data,
	.niomux_recalced = ARRAY_SIZE(rv1108_mux_recalced_data),
	.set_mux = rv1108_set_mux,
	.set_pull = rv1108_set_pull,
	.set_drive = rv1108_set_drive,
	.set_schmitt = rv1108_set_schmitt,
	};

	static const struct udevice_id rv1108_pinctrl_ids[] = {
	{
	.compatible = "rockchip,rv1108-pinctrl",
	.data = (ulong)&rv1108_pin_ctrl
	},
	{ }
	};

	U_BOOT_DRIVER(pinctrl_rv1108) = {
	.name = "pinctrl_rv1108",
	.id = UCLASS_PINCTRL,
	.of_match = rv1108_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,
	};