78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#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);
|