71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/*
|
|
* Copyright (c) 2019 Synopsys, Inc. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <device.h>
|
|
#include <drivers/pinmux.h>
|
|
#include <soc.h>
|
|
|
|
#define creg_gpio_mux_reg (*(volatile uint32_t *)CREG_GPIO_MUX_BASE_ADDR)
|
|
|
|
void _arc_sync(void)
|
|
{
|
|
__asm__ volatile("sync");
|
|
}
|
|
|
|
static int pinmux_hsdk_set(struct device *dev, uint32_t pin, uint32_t func)
|
|
{
|
|
|
|
if (func >= HSDK_PINMUX_FUNS || pin >= HSDK_PINMUX_SELS)
|
|
return -EINVAL;
|
|
|
|
creg_gpio_mux_reg &= ~(0x07U << (pin * 3));
|
|
creg_gpio_mux_reg |= (func << (pin * 3));
|
|
|
|
_arc_sync();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pinmux_hsdk_get(struct device *dev, uint32_t pin, uint32_t *func)
|
|
{
|
|
|
|
if (pin >= HSDK_PINMUX_SELS || func == NULL)
|
|
return -EINVAL;
|
|
|
|
*func = (creg_gpio_mux_reg >> (pin * 3)) & 0x07U;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pinmux_hsdk_pullup(struct device *dev, uint32_t pin, uint8_t func)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static int pinmux_hsdk_input(struct device *dev, uint32_t pin, uint8_t func)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static int pinmux_hsdk_init(struct device *dev)
|
|
{
|
|
ARG_UNUSED(dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct pinmux_driver_api pinmux_hsdk_driver_api = {
|
|
.set = pinmux_hsdk_set,
|
|
.get = pinmux_hsdk_get,
|
|
.pullup = pinmux_hsdk_pullup,
|
|
.input = pinmux_hsdk_input,
|
|
};
|
|
|
|
DEVICE_AND_API_INIT(pinmux_hsdk, CONFIG_PINMUX_NAME,
|
|
&pinmux_hsdk_init, NULL, NULL,
|
|
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,
|
|
&pinmux_hsdk_driver_api);
|