Initial revision
This commit is contained in:
wdenk
parent
4f163801ae
commit
91d3256c6e
193
common/devices.c
Normal file
193
common/devices.c
Normal file
@ -0,0 +1,193 @@
|
||||
/*
|
||||
* (C) Copyright 2000
|
||||
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
|
||||
*
|
||||
* See file CREDITS for list of people who contributed to this
|
||||
* project.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <common.h>
|
||||
#include <stdarg.h>
|
||||
#include <malloc.h>
|
||||
#include <devices.h>
|
||||
#include <i2c.h>
|
||||
|
||||
list_t devlist = 0;
|
||||
device_t *stdio_devices[] = { NULL, NULL, NULL };
|
||||
char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
|
||||
|
||||
#ifdef CFG_DEVICE_NULLDEV
|
||||
void nulldev_putc(const char c)
|
||||
{
|
||||
/* nulldev is empty! */
|
||||
}
|
||||
|
||||
void nulldev_puts(const char *s)
|
||||
{
|
||||
/* nulldev is empty! */
|
||||
}
|
||||
|
||||
int nulldev_input(void)
|
||||
{
|
||||
/* nulldev is empty! */
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/**************************************************************************
|
||||
* SYSTEM DRIVERS
|
||||
**************************************************************************
|
||||
*/
|
||||
|
||||
static void drv_system_init (void)
|
||||
{
|
||||
device_t dev;
|
||||
|
||||
memset (&dev, 0, sizeof (dev));
|
||||
|
||||
strcpy (dev.name, "serial");
|
||||
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
|
||||
#if CONFIG_SERIAL_SOFTWARE_FIFO
|
||||
dev.putc = serial_buffered_putc;
|
||||
dev.puts = serial_buffered_puts;
|
||||
dev.getc = serial_buffered_getc;
|
||||
dev.tstc = serial_buffered_tstc;
|
||||
#else
|
||||
dev.putc = serial_putc;
|
||||
dev.puts = serial_puts;
|
||||
dev.getc = serial_getc;
|
||||
dev.tstc = serial_tstc;
|
||||
#endif
|
||||
|
||||
device_register (&dev);
|
||||
|
||||
#ifdef CFG_DEVICE_NULLDEV
|
||||
memset (&dev, 0, sizeof (dev));
|
||||
|
||||
strcpy (dev.name, "nulldev");
|
||||
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
|
||||
dev.putc = nulldev_putc;
|
||||
dev.puts = nulldev_puts;
|
||||
dev.getc = nulldev_input;
|
||||
dev.tstc = nulldev_input;
|
||||
|
||||
device_register (&dev);
|
||||
#endif
|
||||
}
|
||||
|
||||
/**************************************************************************
|
||||
* DEVICES
|
||||
**************************************************************************
|
||||
*/
|
||||
|
||||
int device_register (device_t * dev)
|
||||
{
|
||||
ListInsertItem (devlist, dev, LIST_END);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* deregister the device "devname".
|
||||
* returns 0 if success, -1 if device is assigned and 1 if devname not found
|
||||
*/
|
||||
#ifdef CFG_DEVICE_DEREGISTER
|
||||
int device_deregister(char *devname)
|
||||
{
|
||||
int i,l,dev_index;
|
||||
device_t *dev = NULL;
|
||||
char temp_names[3][8];
|
||||
|
||||
dev_index=-1;
|
||||
for (i=1; i<=ListNumItems(devlist); i++) {
|
||||
dev = ListGetPtrToItem (devlist, i);
|
||||
if(strcmp(dev->name,devname)==0) {
|
||||
dev_index=i;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(dev_index<0) /* device not found */
|
||||
return 0;
|
||||
/* get stdio devices (ListRemoveItem changes the dev list) */
|
||||
for (l=0 ; l< MAX_FILES; l++) {
|
||||
if (stdio_devices[l] == dev) {
|
||||
/* Device is assigned -> report error */
|
||||
return -1;
|
||||
}
|
||||
memcpy (&temp_names[l][0],
|
||||
stdio_devices[l]->name,
|
||||
sizeof(stdio_devices[l]->name));
|
||||
}
|
||||
ListRemoveItem(devlist,NULL,dev_index);
|
||||
/* reassign Device list */
|
||||
for (i=1; i<=ListNumItems(devlist); i++) {
|
||||
dev = ListGetPtrToItem (devlist, i);
|
||||
for (l=0 ; l< MAX_FILES; l++) {
|
||||
if(strcmp(dev->name,temp_names[l])==0) {
|
||||
stdio_devices[l] = dev;
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif /* CFG_DEVICE_DEREGISTER */
|
||||
|
||||
int devices_init (void)
|
||||
{
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
int i;
|
||||
ulong relocation_offset = gd->reloc_off;
|
||||
|
||||
/* relocate device name pointers */
|
||||
for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
|
||||
stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
|
||||
relocation_offset);
|
||||
}
|
||||
|
||||
/* Initialize the list */
|
||||
devlist = ListCreate (sizeof (device_t));
|
||||
|
||||
if (devlist == NULL) {
|
||||
eputs ("Cannot initialize the list of devices!\n");
|
||||
return -1;
|
||||
}
|
||||
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
|
||||
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
|
||||
#endif
|
||||
#ifdef CONFIG_LCD
|
||||
drv_lcd_init ();
|
||||
#endif
|
||||
#ifdef CONFIG_VIDEO
|
||||
drv_video_init ();
|
||||
#endif
|
||||
#ifdef CONFIG_WL_4PPM_KEYBOARD
|
||||
drv_wlkbd_init ();
|
||||
#endif
|
||||
drv_system_init ();
|
||||
|
||||
gd-> flags |= GD_FLG_DEVINIT; /* device initialization done */
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
int devices_done (void)
|
||||
{
|
||||
ListDispose (devlist);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user