static void av_exit(H264Decoder *d)
{
ErlDrvTermData reply[] = {
ERL_DRV_ATOM, driver_mk_atom("av_decoder_closed"),
ERL_DRV_PORT, driver_mk_port(d->port),
ERL_DRV_TUPLE, 2
};
driver_output_term(d->port, reply, sizeof(reply) / sizeof(reply[0]));
driver_exit(d->port, 0);
}
static int __init driver_init (void) {
printk("<1> driver_init\n");
/* allokere device-nummer */
major = 252;
/* Allocating memory for the buffer */
memory_buffer = kmalloc(1, GFP_KERNEL);
if (!memory_buffer) {
driver_exit();
return -ENOMEM;
}
memset(memory_buffer, 0, 1);
/*
button_buffer = kmalloc(1, GFP_KERNEL);
if (!button_buffer) {
result = -ENOMEM;
driver_exit();
return result;
}
memset(button_buffer, 0, 1);
led_buffer = kmalloc(1, GFP_KERNEL);
if (!led_buffer) {
result = -ENOMEM;
driver_exit();
return result;
}
memset(led_buffer, 0, 1);
*/
/* be om tilgang til I/O-porter */
/* buttons */
int per_res = check_region(piob->per, 1);
int puer_res = check_region(piob->puer, 1);
int ier_res = check_region(piob->ier, 1);
if(per_res){
printk("<1>buttons: cannot reserve piob->per\n");
driver_exit();
return per_res;
}
if(puer_res){
printk("<1>buttons: cannot reserve piob->puer\n");
driver_exit();
return puer_res;
}
if(ier_res){
printk("<1>buttons: cannot reserve piob->ier\n");
driver_exit();
return ier_res;
}
request_region(piob->per, 1, "STK1000_LEDBUTTON_DRIVER");
request_region(piob->puer, 1, "STK1000_LEDBUTTON_DRIVER");
request_region(piob->ier, 1, "STK1000_LEDBUTTON_DRIVER");
/* leds */
int perLED_res = check_region(pioc->per, 1);
int oer_res = check_region(pioc->oer, 1);
if(perLED_res){
printk("<1>leds: cannot reserve pioc->per\n");
driver_exit();
return perLED_res;
}
if(oer_res){
printk("<1>leds: cannot reserve pioc->oer\n");
driver_exit();
return oer_res;
}
request_region(pioc->per, 1, "STK1000_LEDBUTTON_DRIVER");
request_region(pioc->oer, 1, "STK1000_LEDBUTTON_DRIVER");
/*
dev_t dev;
int r =alloc_chrdev_region(&dev, 0,16,"STK1000_LEDBUTTON_DRIVER");
printk(KERN_INFO "device id: %d",r);
int piob_check = check_region((int)&AVR32_PIOB,1);
int pioc_check = check_region((int)&AVR32_PIOC,1);
if (piob_check && pioc_check){
printk(KERN_INFO "Diddnt get the regions we wanted.");
}
else{
request_region((int)&AVR32_PIOB,1,"STK1000_LEDBUTTON_DRIVER");
request_region((int)&AVR32_PIOC,1,"STK1000_LEDBUTTON_DRIVER");
}
*/
/* initialisere PIO-maskinvaren (som i øving 2) */
//Setup buttons
//register_interrupt( button_isr, AVR32_PIOB_IRQ/32, AVR32_PIOB_IRQ % 32, BUTTONS_INT_LEVEL);
piob->per = 0xff;
piob->puer= 0xff;
piob->ier = 0xff;
//Setup leds
pioc->per = 0xff;
pioc->oer = 0xff;
/* registrere device i systemet (må gjøres når alt annet er initialisert) */
int result = register_chrdev(major, "STK1000_LEDBUTTON_DRIVER", &driver_fops);
if (result < 0) {
printk("<1>memory: cannot obtain major number %d\n", major);
return result;
}
return 0;
}
