include/sunxi_gpio.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (C) Copyright 2007-2012
 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
 * Tom Cubie <tangliang@allwinnertech.com>
 *
 * Definitions that are shared between the Allwinner pinctrl and GPIO drivers,
 * also used by some non-DM SPL code directly.
 */

#ifndef _SUNXI_GPIO_H
#define _SUNXI_GPIO_H

#include <linux/types.h>

#if defined(CONFIG_MACH_SUN9I)
#define SUNXI_PIO_BASE		0x06000800
#define SUNXI_R_PIO_BASE	0x08002c00
#elif defined(CONFIG_SUN50I_GEN_H6)
#define SUNXI_PIO_BASE		0x0300b000
#define SUNXI_R_PIO_BASE	0x07022000
#else
#define SUNXI_PIO_BASE		0x01c20800
#define SUNXI_R_PIO_BASE	0x01f02c00
#endif

/*
 * sunxi has 9 banks of gpio, they are:
 * PA0 - PA17 | PB0 - PB23 | PC0 - PC24
 * PD0 - PD27 | PE0 - PE31 | PF0 - PF5
 * PG0 - PG9  | PH0 - PH27 | PI0 - PI12
 */

#define SUNXI_GPIO_A	0
#define SUNXI_GPIO_B	1
#define SUNXI_GPIO_C	2
#define SUNXI_GPIO_D	3
#define SUNXI_GPIO_E	4
#define SUNXI_GPIO_F	5
#define SUNXI_GPIO_G	6
#define SUNXI_GPIO_H	7
#define SUNXI_GPIO_I	8

/*
 * sun6i/sun8i and later SoCs have an additional GPIO controller (R_PIO)
 * at a different register offset.
 *
 * sun6i has 2 banks:
 * PL0 - PL8  | PM0 - PM7
 *
 * sun8i has 1 bank:
 * PL0 - PL11
 *
 * sun9i has 3 banks:
 * PL0 - PL9  | PM0 - PM15  | PN0 - PN1
 */
#define SUNXI_GPIO_L	11
#define SUNXI_GPIO_M	12
#define SUNXI_GPIO_N	13

#define SUN50I_H6_GPIO_POW_MOD_SEL	0x340
#define SUN50I_H6_GPIO_POW_MOD_VAL	0x348

#define SUNXI_GPIOS_PER_BANK	32
#define SUNXI_PINCTRL_BANK_SIZE 0x24

#define SUNXI_GPIO_NEXT(__gpio) \
	((__gpio##_START) + SUNXI_GPIOS_PER_BANK)

enum sunxi_gpio_number {
	SUNXI_GPIO_A_START = 0,
	SUNXI_GPIO_B_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_A),
	SUNXI_GPIO_C_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_B),
	SUNXI_GPIO_D_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_C),
	SUNXI_GPIO_E_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_D),
	SUNXI_GPIO_F_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_E),
	SUNXI_GPIO_G_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_F),
	SUNXI_GPIO_H_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_G),
	SUNXI_GPIO_I_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_H),
	SUNXI_GPIO_L_START = 352,
	SUNXI_GPIO_M_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_L),
	SUNXI_GPIO_N_START = SUNXI_GPIO_NEXT(SUNXI_GPIO_M),
	SUNXI_GPIO_AXP0_START = 1024,
};

/* SUNXI GPIO number definitions */
#define SUNXI_GPA(_nr)	(SUNXI_GPIO_A_START + (_nr))
#define SUNXI_GPB(_nr)	(SUNXI_GPIO_B_START + (_nr))
#define SUNXI_GPC(_nr)	(SUNXI_GPIO_C_START + (_nr))
#define SUNXI_GPD(_nr)	(SUNXI_GPIO_D_START + (_nr))
#define SUNXI_GPE(_nr)	(SUNXI_GPIO_E_START + (_nr))
#define SUNXI_GPF(_nr)	(SUNXI_GPIO_F_START + (_nr))
#define SUNXI_GPG(_nr)	(SUNXI_GPIO_G_START + (_nr))
#define SUNXI_GPH(_nr)	(SUNXI_GPIO_H_START + (_nr))
#define SUNXI_GPI(_nr)	(SUNXI_GPIO_I_START + (_nr))
#define SUNXI_GPL(_nr)	(SUNXI_GPIO_L_START + (_nr))
#define SUNXI_GPM(_nr)	(SUNXI_GPIO_M_START + (_nr))
#define SUNXI_GPN(_nr)	(SUNXI_GPIO_N_START + (_nr))

#define SUNXI_GPAXP0(_nr)	(SUNXI_GPIO_AXP0_START + (_nr))

/* GPIO pin function config */
#define SUNXI_GPIO_INPUT	0
#define SUNXI_GPIO_OUTPUT	1
#define SUNXI_GPIO_DISABLE	7

#define SUN8I_H3_GPA_UART0	2
#define SUN8I_H3_GPA_UART2	2

#define SUN4I_GPB_PWM		2
#define SUN4I_GPB_TWI0		2
#define SUN4I_GPB_TWI1		2
#define SUN5I_GPB_TWI1		2
#define SUN8I_V3S_GPB_TWI0	2
#define SUN4I_GPB_UART0		2
#define SUN5I_GPB_UART0		2
#define SUN8I_GPB_UART2		2
#define SUN8I_A33_GPB_UART0	3
#define SUN8I_A83T_GPB_UART0	2
#define SUN8I_V3S_GPB_UART0	3
#define SUN50I_GPB_UART0	4

#define SUNXI_GPC_NAND		2
#define SUNXI_GPC_SPI0		3
#define SUNXI_GPC_SDC2		3
#define SUN6I_GPC_SDC3		4
#define SUN50I_GPC_SPI0		4
#define SUNIV_GPC_SPI0		2

#define SUNXI_GPD_LCD0		2
#define SUNXI_GPD_LVDS0		3

#define SUNIV_GPE_UART0		5

#define SUNXI_GPF_SDC0		2
#define SUNXI_GPF_UART0		4
#define SUN8I_GPF_UART0		3

#define SUN4I_GPG_SDC1		4
#define SUN5I_GPG_SDC1		2
#define SUN6I_GPG_SDC1		2
#define SUN8I_GPG_SDC1		2
#define SUN8I_GPG_UART1		2
#define SUN5I_GPG_UART1		4

#define SUN6I_GPH_PWM		2
#define SUN8I_GPH_PWM		2
#define SUN4I_GPH_SDC1		5
#define SUN6I_GPH_TWI0		2
#define SUN8I_GPH_TWI0		2
#define SUN50I_GPH_TWI0		2
#define SUN6I_GPH_TWI1		2
#define SUN8I_GPH_TWI1		2
#define SUN50I_GPH_TWI1		2
#define SUN6I_GPH_UART0		2
#define SUN9I_GPH_UART0		2
#define SUN50I_H6_GPH_UART0	2
#define SUN50I_H616_GPH_UART0	2

#define SUNXI_GPI_SDC3		2

#define SUN6I_GPL0_R_P2WI_SCK	3
#define SUN6I_GPL1_R_P2WI_SDA	3

#define SUN8I_GPL_R_RSB		2
#define SUN8I_H3_GPL_R_TWI	2
#define SUN8I_A23_GPL_R_TWI	3
#define SUN8I_GPL_R_UART	2
#define SUN50I_GPL_R_TWI	2
#define SUN50I_H616_GPL_R_TWI	3

#define SUN9I_GPN_R_RSB		3

/* GPIO pin pull-up/down config */
#define SUNXI_GPIO_PULL_DISABLE	0
#define SUNXI_GPIO_PULL_UP	1
#define SUNXI_GPIO_PULL_DOWN	2

/* Virtual AXP0 GPIOs */
#define SUNXI_GPIO_AXP0_PREFIX "AXP0-"
#define SUNXI_GPIO_AXP0_VBUS_ENABLE	5
#define SUNXI_GPIO_AXP0_GPIO_COUNT	6

struct sunxi_gpio_plat {
	void			*regs;
	char			bank_name[3];
};

/* prototypes for the non-DM GPIO/pinctrl functions, used in the SPL */
void sunxi_gpio_set_cfgbank(void *bank_base, int pin_offset, u32 val);
void sunxi_gpio_set_cfgpin(u32 pin, u32 val);
int sunxi_gpio_get_cfgbank(void *bank_base, int pin_offset);
int sunxi_gpio_get_cfgpin(u32 pin);
void sunxi_gpio_set_drv(u32 pin, u32 val);
void sunxi_gpio_set_drv_bank(void *bank_base, u32 pin_offset, u32 val);
void sunxi_gpio_set_pull(u32 pin, u32 val);
void sunxi_gpio_set_pull_bank(void *bank_base, int pin_offset, u32 val);
int sunxi_name_to_gpio(const char *name);

#if !defined CONFIG_SPL_BUILD && defined CONFIG_AXP_GPIO
int axp_gpio_init(void);
#else
static inline int axp_gpio_init(void) { return 0; }
#endif

#endif /* _SUNXI_GPIO_H */