static int dm_init(void)
{
int result;
int devno;
struct drvr_mem * memDev;
dev_t dev = 0;
result = alloc_chrdev_region(&dev, 0, 1, DEVICE_NAME);
gDrvrMajor = MAJOR(dev);
if (result < 0) {
DBG_LOG("Registering char device failed with %d\n", gDrvrMajor);
return result;
}
drvr_devices = kmalloc(sizeof(struct drvr_device), GFP_KERNEL);
if (!drvr_devices) {
dm_exit();
return -ENOMEM;
}
drvr_class = class_create(THIS_MODULE, DEVICE_NAME);
memset(drvr_devices, 0, sizeof(struct drvr_device));
//printk(KERN_INFO "'mknod /dev/%s c %d %d'.\n", DEVICE_NAME, gDrvrMajor, 0);
/* Initialize each device. */
devno = MKDEV(gDrvrMajor, 0);
memDev = &(drvr_devices[0].data);
memDev->base_addr = (unsigned short *) (FPGA_BASE_ADDR);
device_create(drvr_class, prog_device, devno, NULL, DEVICE_NAME_MEM);
cdev_init(&(drvr_devices[0].cdev), &dm_ops);
(drvr_devices[0].cdev).owner = THIS_MODULE;
(drvr_devices[0].cdev).ops = &dm_ops;
cdev_add(&(drvr_devices[0].cdev), devno, 1);
drvr_devices[0].opened = 0;
logi_dma_init();
return ioctl_init();
}
static int dm_init(void)
{
int result;
int devno;
struct drvr_mem * memDev;
struct drvr_prog * progDev;
struct i2c_adapter *i2c_adap;
dev_t dev = 0;
result = alloc_chrdev_region(&dev, 0, 2, DEVICE_NAME);
gDrvrMajor = MAJOR(dev);
if (result < 0) {
printk(KERN_ALERT "Registering char device failed with %d\n", gDrvrMajor);
return result;
}
drvr_devices = kmalloc(2 * sizeof(struct drvr_device), GFP_KERNEL);
if (!drvr_devices) {
dm_exit();
return -ENOMEM;
}
drvr_class = class_create(THIS_MODULE, DEVICE_NAME);
memset(drvr_devices, 0, 2 * sizeof(struct drvr_device));
/*Initializing main mdevice for prog*/
devno = MKDEV(gDrvrMajor, 0);
drvr_devices[0].type = prog;
progDev = &(drvr_devices[0].data.prog);
prog_device = device_create(drvr_class, NULL, devno, NULL, DEVICE_NAME); // should create /dev entry for main node
drvr_devices[0].opened = 0;
/*Do the i2c stuff*/
i2c_adap = i2c_get_adapter(1); // todo need to check i2c adapter id
if (i2c_adap == NULL) {
printk("Cannot get adapter 1 \n");
dm_exit();
return -1;
}
progDev->i2c_io = i2c_new_device(i2c_adap, &io_exp_info);
i2c_put_adapter(i2c_adap); //don't know what it does, seems to release the adapter ...
if (prog_device == NULL) {
class_destroy(drvr_class);
drvr_devices[0].opened = 0;
dm_exit();
return -ENOMEM;;
}
cdev_init(&(drvr_devices[0].cdev), &dm_ops);
drvr_devices[0].cdev.owner = THIS_MODULE;
drvr_devices[0].cdev.ops = &dm_ops;
cdev_add(&(drvr_devices[0].cdev), devno, 1);
//printk(KERN_INFO "'mknod /dev/%s c %d %d'.\n", DEVICE_NAME, gDrvrMajor, 0);
/* Initialize each device. */
devno = MKDEV(gDrvrMajor, 1);
drvr_devices[1].type = mem;
memDev = &(drvr_devices[1].data.mem);
memDev->base_addr = (unsigned short *) (FPGA_BASE_ADDR);
device_create(drvr_class, prog_device, devno, NULL, DEVICE_NAME_MEM);
cdev_init(&(drvr_devices[1].cdev), &dm_ops);
(drvr_devices[1].cdev).owner = THIS_MODULE;
(drvr_devices[1].cdev).ops = &dm_ops;
cdev_add(&(drvr_devices[1].cdev), devno, 1);
drvr_devices[1].opened = 0;
init_completion(&dma_comp);
return ioctl_init();
}
