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// SPDX-License-Identifier: GPL-2.0-or-later
#include <common.h>
#include <init.h>
#include <malloc.h>
#include <errno.h>
#include <mach/omap4_rom_usb.h>
struct serial_omap4_usbboot_priv {
struct console_device cdev;
u32 val;
};
static void serial_omap4_usbboot_putc(struct console_device *cdev, char c)
{
unsigned b = c;
omap4_usbboot_write(&b, 4);
}
static int serial_omap4_usbboot_tstc(struct console_device *cdev)
{
struct serial_omap4_usbboot_priv *priv =
container_of(cdev, struct serial_omap4_usbboot_priv, cdev);
if (omap4_usbboot_is_read_waiting())
return 0;
else if (omap4_usbboot_is_read_ok())
return 1;
omap4_usbboot_queue_read(&priv->val, 4);
udelay(100);
if (omap4_usbboot_is_read_waiting())
return 0;
else if (omap4_usbboot_is_read_ok())
return 1;
return 0;
}
static int serial_omap4_usbboot_getc(struct console_device *cdev)
{
struct serial_omap4_usbboot_priv *priv =
container_of(cdev, struct serial_omap4_usbboot_priv, cdev);
if (omap4_usbboot_is_read_waiting() || omap4_usbboot_is_read_ok()) {
omap4_usbboot_wait_read();
return priv->val;
}
omap4_usbboot_read(&priv->val, 4);
return priv->val;
}
static int serial_omap4_usbboot_probe(struct device_d *dev)
{
struct serial_omap4_usbboot_priv *priv;
priv = xzalloc(sizeof(*priv));
priv->cdev.dev = dev;
priv->cdev.tstc = serial_omap4_usbboot_tstc;
priv->cdev.putc = serial_omap4_usbboot_putc;
priv->cdev.getc = serial_omap4_usbboot_getc;
priv->cdev.setbrg = NULL;
return console_register(&priv->cdev);
}
static struct driver_d serial_omap4_usbboot_driver = {
.name = "serial_omap4_usbboot",
.probe = serial_omap4_usbboot_probe,
};
console_platform_driver(serial_omap4_usbboot_driver);
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