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riscv: cpu: jh7110: Add gpio helper macros

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Add gpio.h header file that includes JH7110 helper macros. The file is
imported from StarFive github[1] with small changes such as alignment.

[1]: https://github.com/starfive-tech/u-boot

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
This commit is contained in:
Chanho Park 2023-10-31 17:55:59 +09:00 committed by Leo Yu-Chi Liang
parent bade208b5d
commit 37c2faf325
1 changed files with 85 additions and 0 deletions
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arch/riscv/include/asm/arch-jh7110/gpio.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2023 StarFive Technology Co., Ltd.
* Author: yanhong <yanhong.wang@starfivetech.com>
*
*/
#ifndef _GPIO_STARFIVE_H_
#define _GPIO_STARFIVE_H_
#include <asm/arch/regs.h>
#define GPIO_NUM_SHIFT 2 /*one dword include 4 gpios*/
#define GPIO_BYTE_SHIFT 3
#define GPIO_INDEX_MASK 0x3
#define GPIO_DOEN_MASK 0x3f
#define GPIO_DOUT_MASK 0x7f
#define GPIO_DIN_MASK 0x7f
#define GPIO_DS_MASK 0x06
#define GPIO_DS_SHIFT 1
#define GPIO_SLEW_MASK BIT(5)
#define GPIO_SLEW_SHIFT 5
#define GPIO_PULL_MASK 0x18
#define GPIO_PULL_SHIFT 3
#define GPIO_PULL_UP 1
#define GPIO_PULL_DOWN 2
#define NR_GPIOS 64
#define GPIO_OFFSET(gpio) \
(((gpio) >> GPIO_NUM_SHIFT) << GPIO_NUM_SHIFT)
#define GPIO_SHIFT(gpio) \
(((gpio) & GPIO_INDEX_MASK) << GPIO_BYTE_SHIFT)
enum gpio_state {
LOW,
HIGH
};
#define GPIO_DOEN 0x0
#define GPIO_DOUT 0x40
#define GPIO_DIN 0x80
#define GPIO_EN 0xdc
#define GPIO_LOW_IE 0x100
#define GPIO_HIGH_IE 0x104
#define GPIO_CONFIG 0x120
#define SYS_IOMUX_DOEN(gpio, oen) \
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_OFFSET(gpio), \
GPIO_DOEN_MASK << GPIO_SHIFT(gpio), \
(oen) << GPIO_SHIFT(gpio))
#define SYS_IOMUX_DOUT(gpio, gpo) \
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_DOUT + GPIO_OFFSET(gpio), \
GPIO_DOUT_MASK << GPIO_SHIFT(gpio), \
((gpo) & GPIO_DOUT_MASK) << GPIO_SHIFT(gpio))
#define SYS_IOMUX_DIN(gpio, gpi)\
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_DIN + GPIO_OFFSET(gpi), \
GPIO_DIN_MASK << GPIO_SHIFT(gpi), \
((gpio + 2) & GPIO_DIN_MASK) << GPIO_SHIFT(gpi))
#define SYS_IOMUX_SET_DS(gpio, ds) \
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_CONFIG + gpio * 4, \
GPIO_DS_MASK, (ds) << GPIO_DS_SHIFT)
#define SYS_IOMUX_SET_SLEW(gpio, slew) \
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_CONFIG + gpio * 4, \
GPIO_SLEW_MASK, (slew) << GPIO_SLEW_SHIFT)
#define SYS_IOMUX_SET_PULL(gpio, pull) \
clrsetbits_le32(JH7110_SYS_IOMUX + GPIO_CONFIG + gpio * 4, \
GPIO_PULL_MASK, (pull) << GPIO_PULL_SHIFT)
#define SYS_IOMUX_COMPLEX(gpio, gpi, gpo, oen) \
do { \
SYS_IOMUX_DOEN(gpio, oen); \
SYS_IOMUX_DOUT(gpio, gpo); \
SYS_IOMUX_DIN(gpio, gpi); \
} while (0)
#endif /* _GPIO_STARFIVE_H_ */