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/*
* Copyright (c) 2016 Scalys B.V. <u-boot@scalys.com>
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _POWERPC_ASM_MPC8XXX_GPIO_H
#define _POWERPC_ASM_MPC8XXX_GPIO_H
#include <asm-generic/errno.h>
#define MPC8XXX_GPIO_NR(port, pin) ((((port)-1)*32)+((pin)&31))
#define MPC8XXX_GPIO_TO_PORT(gpio) (gpio/32)
#define MPC8XXX_GPIO_TO_PIN(gpio) (gpio&31)
static inline void mpc8xxx_gpio_set(uint32_t gpio, int value)
{
int port, pin;
ccsr_gpio_t *gpio_regs;
uint32_t regval;
port = MPC8XXX_GPIO_TO_PORT(gpio);
pin = MPC8XXX_GPIO_TO_PIN(gpio);
switch (port) {
#ifdef CONFIG_SYS_MPC8XXX_GPIO1_ADDR
case 0:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO1_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO2_ADDR
case 1:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO2_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO3_ADDR
case 2:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO3_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO4_ADDR
case 3:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO4_ADDR;
break;
#endif
default:
return;
}
/* Set output */
regval = in_be32(&(gpio_regs->gpdat));
regval |= (0x80000000 >> pin);
out_be32(&(gpio_regs->gpdat), regval);
/* Set direction to acivate gpio pin */
regval = in_be32(&(gpio_regs->gpdir));
regval |= (0x80000000 >> pin);
out_be32(&(gpio_regs->gpdir), regval);
}
static inline int mpc8xxx_gpio_get(uint32_t gpio, int value)
{
int port, pin;
ccsr_gpio_t *gpio_regs;
uint32_t regval;
port = MPC8XXX_GPIO_TO_PORT(gpio);
pin = MPC8XXX_GPIO_TO_PIN(gpio);
switch (port) {
#ifdef CONFIG_SYS_MPC8XXX_GPIO1_ADDR
case 0:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO1_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO2_ADDR
case 1:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO2_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO3_ADDR
case 2:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO3_ADDR;
break;
#endif
#ifdef CONFIG_SYS_MPC8XXX_GPIO4_ADDR
case 3:
gpio_regs = (ccsr_gpio_t *) CONFIG_SYS_MPC8XXX_GPIO4_ADDR;
break;
#endif
default:
return -ENODEV;
}
/* Get inputs */
regval = in_be32(&(gpio_regs->gpdat));
regval <<= pin;
regval &= 1;
return regval;
}
#endif /* _POWERPC_ASM_MPC8XXX_GPIO_H */
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