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/*
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* (C) Copyright 2000 |
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <config.h> |
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#include <common.h> |
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#include <stdarg.h> |
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#include <malloc.h> |
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#include <devices.h> |
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#include <i2c.h> |
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list_t devlist = 0; |
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device_t *stdio_devices[] = { NULL, NULL, NULL }; |
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char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" }; |
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#ifdef CFG_DEVICE_NULLDEV |
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void nulldev_putc(const char c) |
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{ |
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/* nulldev is empty! */ |
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} |
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void nulldev_puts(const char *s) |
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{ |
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/* nulldev is empty! */ |
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} |
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int nulldev_input(void) |
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{ |
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/* nulldev is empty! */ |
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return 0; |
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} |
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#endif |
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/**************************************************************************
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* SYSTEM DRIVERS |
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************************************************************************** |
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*/ |
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static void drv_system_init (void) |
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{ |
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device_t dev; |
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memset (&dev, 0, sizeof (dev)); |
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strcpy (dev.name, "serial"); |
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dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; |
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#if CONFIG_SERIAL_SOFTWARE_FIFO |
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dev.putc = serial_buffered_putc; |
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dev.puts = serial_buffered_puts; |
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dev.getc = serial_buffered_getc; |
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dev.tstc = serial_buffered_tstc; |
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#else |
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dev.putc = serial_putc; |
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dev.puts = serial_puts; |
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dev.getc = serial_getc; |
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dev.tstc = serial_tstc; |
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#endif |
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device_register (&dev); |
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#ifdef CFG_DEVICE_NULLDEV |
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memset (&dev, 0, sizeof (dev)); |
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strcpy (dev.name, "nulldev"); |
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dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; |
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dev.putc = nulldev_putc; |
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dev.puts = nulldev_puts; |
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dev.getc = nulldev_input; |
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dev.tstc = nulldev_input; |
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device_register (&dev); |
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#endif |
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} |
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/**************************************************************************
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* DEVICES |
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************************************************************************** |
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*/ |
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int device_register (device_t * dev) |
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{ |
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ListInsertItem (devlist, dev, LIST_END); |
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return 0; |
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} |
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/* deregister the device "devname".
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* returns 0 if success, -1 if device is assigned and 1 if devname not found |
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*/ |
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#ifdef CFG_DEVICE_DEREGISTER |
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int device_deregister(char *devname) |
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{ |
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int i,l,dev_index; |
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device_t *dev = NULL; |
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char temp_names[3][8]; |
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dev_index=-1; |
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for (i=1; i<=ListNumItems(devlist); i++) { |
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dev = ListGetPtrToItem (devlist, i); |
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if(strcmp(dev->name,devname)==0) { |
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dev_index=i; |
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break; |
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} |
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} |
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if(dev_index<0) /* device not found */ |
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return 0; |
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/* get stdio devices (ListRemoveItem changes the dev list) */ |
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for (l=0 ; l< MAX_FILES; l++) { |
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if (stdio_devices[l] == dev) { |
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/* Device is assigned -> report error */ |
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return -1; |
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} |
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memcpy (&temp_names[l][0], |
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stdio_devices[l]->name, |
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sizeof(stdio_devices[l]->name)); |
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} |
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ListRemoveItem(devlist,NULL,dev_index); |
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/* reassign Device list */ |
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for (i=1; i<=ListNumItems(devlist); i++) { |
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dev = ListGetPtrToItem (devlist, i); |
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for (l=0 ; l< MAX_FILES; l++) { |
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if(strcmp(dev->name,temp_names[l])==0) { |
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stdio_devices[l] = dev; |
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} |
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} |
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} |
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return 0; |
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} |
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#endif /* CFG_DEVICE_DEREGISTER */ |
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int devices_init (void) |
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{ |
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DECLARE_GLOBAL_DATA_PTR; |
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int i; |
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ulong relocation_offset = gd->reloc_off; |
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/* relocate device name pointers */ |
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for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) { |
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stdio_names[i] = (char *) (((ulong) stdio_names[i]) + |
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relocation_offset); |
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} |
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/* Initialize the list */ |
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devlist = ListCreate (sizeof (device_t)); |
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if (devlist == NULL) { |
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eputs ("Cannot initialize the list of devices!\n"); |
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return -1; |
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} |
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#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) |
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i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); |
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#endif |
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#ifdef CONFIG_LCD |
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drv_lcd_init (); |
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#endif |
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#ifdef CONFIG_VIDEO |
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drv_video_init (); |
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#endif |
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#ifdef CONFIG_WL_4PPM_KEYBOARD |
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drv_wlkbd_init (); |
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#endif |
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drv_system_init (); |
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gd-> flags |= GD_FLG_DEVINIT; /* device initialization done */ |
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return (0); |
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} |
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int devices_done (void) |
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{ |
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ListDispose (devlist); |
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return 0; |
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} |
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