Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c
new file mode 100644
index 0000000..86ce541
--- /dev/null
+++ b/drivers/sbus/char/vfc_dev.c
@@ -0,0 +1,742 @@
+/*
+ * drivers/sbus/char/vfc_dev.c
+ *
+ * Driver for the Videopix Frame Grabber.
+ *
+ * In order to use the VFC you need to program the video controller
+ * chip. This chip is the Phillips SAA9051. You need to call their
+ * documentation ordering line to get the docs.
+ *
+ * There is very little documentation on the VFC itself. There is
+ * some useful info that can be found in the manuals that come with
+ * the card. I will hopefully write some better docs at a later date.
+ *
+ * Copyright (C) 1996 Manish Vachharajani (mvachhar@noc.rutgers.edu)
+ * */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/smp_lock.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/sbus.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/uaccess.h>
+
+#define VFC_MAJOR (60)
+
+#if 0
+#define VFC_IOCTL_DEBUG
+#endif
+
+#include "vfc.h"
+#include <asm/vfc_ioctls.h>
+
+static struct file_operations vfc_fops;
+struct vfc_dev **vfc_dev_lst;
+static char vfcstr[]="vfc";
+static unsigned char saa9051_init_array[VFC_SAA9051_NR] = {
+ 0x00, 0x64, 0x72, 0x52,
+ 0x36, 0x18, 0xff, 0x20,
+ 0xfc, 0x77, 0xe3, 0x50,
+ 0x3e
+};
+
+void vfc_lock_device(struct vfc_dev *dev)
+{
+ down(&dev->device_lock_sem);
+}
+
+void vfc_unlock_device(struct vfc_dev *dev)
+{
+ up(&dev->device_lock_sem);
+}
+
+
+void vfc_captstat_reset(struct vfc_dev *dev)
+{
+ dev->control_reg |= VFC_CONTROL_CAPTRESET;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg &= ~VFC_CONTROL_CAPTRESET;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg |= VFC_CONTROL_CAPTRESET;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+}
+
+void vfc_memptr_reset(struct vfc_dev *dev)
+{
+ dev->control_reg |= VFC_CONTROL_MEMPTR;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg &= ~VFC_CONTROL_MEMPTR;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg |= VFC_CONTROL_MEMPTR;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+}
+
+int vfc_csr_init(struct vfc_dev *dev)
+{
+ dev->control_reg = 0x80000000;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ udelay(200);
+ dev->control_reg &= ~0x80000000;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ udelay(100);
+ sbus_writel(0x0f000000, &dev->regs->i2c_magic2);
+
+ vfc_memptr_reset(dev);
+
+ dev->control_reg &= ~VFC_CONTROL_DIAGMODE;
+ dev->control_reg &= ~VFC_CONTROL_CAPTURE;
+ dev->control_reg |= 0x40000000;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+
+ vfc_captstat_reset(dev);
+
+ return 0;
+}
+
+int vfc_saa9051_init(struct vfc_dev *dev)
+{
+ int i;
+
+ for (i = 0; i < VFC_SAA9051_NR; i++)
+ dev->saa9051_state_array[i] = saa9051_init_array[i];
+
+ vfc_i2c_sendbuf(dev,VFC_SAA9051_ADDR,
+ dev->saa9051_state_array, VFC_SAA9051_NR);
+ return 0;
+}
+
+int init_vfc_hw(struct vfc_dev *dev)
+{
+ vfc_lock_device(dev);
+ vfc_csr_init(dev);
+
+ vfc_pcf8584_init(dev);
+ vfc_init_i2c_bus(dev); /* hopefully this doesn't undo the magic
+ sun code above*/
+ vfc_saa9051_init(dev);
+ vfc_unlock_device(dev);
+ return 0;
+}
+
+int init_vfc_devstruct(struct vfc_dev *dev, int instance)
+{
+ dev->instance=instance;
+ init_MUTEX(&dev->device_lock_sem);
+ dev->control_reg=0;
+ init_waitqueue_head(&dev->poll_wait);
+ dev->busy=0;
+ return 0;
+}
+
+int init_vfc_device(struct sbus_dev *sdev,struct vfc_dev *dev, int instance)
+{
+ if(dev == NULL) {
+ printk(KERN_ERR "VFC: Bogus pointer passed\n");
+ return -ENOMEM;
+ }
+ printk("Initializing vfc%d\n",instance);
+ dev->regs = NULL;
+ dev->regs = (volatile struct vfc_regs *)
+ sbus_ioremap(&sdev->resource[0], 0,
+ sizeof(struct vfc_regs), vfcstr);
+ dev->which_io = sdev->reg_addrs[0].which_io;
+ dev->phys_regs = (struct vfc_regs *) sdev->reg_addrs[0].phys_addr;
+ if (dev->regs == NULL)
+ return -EIO;
+
+ printk("vfc%d: registers mapped at phys_addr: 0x%lx\n virt_addr: 0x%lx\n",
+ instance,(unsigned long)sdev->reg_addrs[0].phys_addr,(unsigned long)dev->regs);
+
+ if (init_vfc_devstruct(dev, instance))
+ return -EINVAL;
+ if (init_vfc_hw(dev))
+ return -EIO;
+
+ devfs_mk_cdev(MKDEV(VFC_MAJOR, instance),
+ S_IFCHR | S_IRUSR | S_IWUSR,
+ "vfc/%d", instance);
+ return 0;
+}
+
+
+struct vfc_dev *vfc_get_dev_ptr(int instance)
+{
+ return vfc_dev_lst[instance];
+}
+
+static DEFINE_SPINLOCK(vfc_dev_lock);
+
+static int vfc_open(struct inode *inode, struct file *file)
+{
+ struct vfc_dev *dev;
+
+ spin_lock(&vfc_dev_lock);
+ dev = vfc_get_dev_ptr(iminor(inode));
+ if (dev == NULL) {
+ spin_unlock(&vfc_dev_lock);
+ return -ENODEV;
+ }
+ if (dev->busy) {
+ spin_unlock(&vfc_dev_lock);
+ return -EBUSY;
+ }
+
+ dev->busy = 1;
+ spin_unlock(&vfc_dev_lock);
+
+ vfc_lock_device(dev);
+
+ vfc_csr_init(dev);
+ vfc_pcf8584_init(dev);
+ vfc_init_i2c_bus(dev);
+ vfc_saa9051_init(dev);
+ vfc_memptr_reset(dev);
+ vfc_captstat_reset(dev);
+
+ vfc_unlock_device(dev);
+ return 0;
+}
+
+static int vfc_release(struct inode *inode,struct file *file)
+{
+ struct vfc_dev *dev;
+
+ spin_lock(&vfc_dev_lock);
+ dev = vfc_get_dev_ptr(iminor(inode));
+ if (!dev || !dev->busy) {
+ spin_unlock(&vfc_dev_lock);
+ return -EINVAL;
+ }
+ dev->busy = 0;
+ spin_unlock(&vfc_dev_lock);
+ return 0;
+}
+
+static int vfc_debug(struct vfc_dev *dev, int cmd, void __user *argp)
+{
+ struct vfc_debug_inout inout;
+ unsigned char *buffer;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ switch(cmd) {
+ case VFC_I2C_SEND:
+ if(copy_from_user(&inout, argp, sizeof(inout)))
+ return -EFAULT;
+
+ buffer = kmalloc(inout.len, GFP_KERNEL);
+ if (buffer == NULL)
+ return -ENOMEM;
+
+ if(copy_from_user(buffer, inout.buffer, inout.len)) {
+ kfree(buffer);
+ return -EFAULT;
+ }
+
+
+ vfc_lock_device(dev);
+ inout.ret=
+ vfc_i2c_sendbuf(dev,inout.addr & 0xff,
+ buffer,inout.len);
+
+ if (copy_to_user(argp,&inout,sizeof(inout))) {
+ kfree(buffer);
+ return -EFAULT;
+ }
+ vfc_unlock_device(dev);
+
+ break;
+ case VFC_I2C_RECV:
+ if (copy_from_user(&inout, argp, sizeof(inout)))
+ return -EFAULT;
+
+ buffer = kmalloc(inout.len, GFP_KERNEL);
+ if (buffer == NULL)
+ return -ENOMEM;
+
+ memset(buffer,0,inout.len);
+ vfc_lock_device(dev);
+ inout.ret=
+ vfc_i2c_recvbuf(dev,inout.addr & 0xff
+ ,buffer,inout.len);
+ vfc_unlock_device(dev);
+
+ if (copy_to_user(inout.buffer, buffer, inout.len)) {
+ kfree(buffer);
+ return -EFAULT;
+ }
+ if (copy_to_user(argp,&inout,sizeof(inout))) {
+ kfree(buffer);
+ return -EFAULT;
+ }
+ kfree(buffer);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ return 0;
+}
+
+int vfc_capture_start(struct vfc_dev *dev)
+{
+ vfc_captstat_reset(dev);
+ dev->control_reg = sbus_readl(&dev->regs->control);
+ if((dev->control_reg & VFC_STATUS_CAPTURE)) {
+ printk(KERN_ERR "vfc%d: vfc capture status not reset\n",
+ dev->instance);
+ return -EIO;
+ }
+
+ vfc_lock_device(dev);
+ dev->control_reg &= ~VFC_CONTROL_CAPTURE;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg |= VFC_CONTROL_CAPTURE;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ dev->control_reg &= ~VFC_CONTROL_CAPTURE;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ vfc_unlock_device(dev);
+
+ return 0;
+}
+
+int vfc_capture_poll(struct vfc_dev *dev)
+{
+ int timeout = 1000;
+
+ while (!timeout--) {
+ if (dev->regs->control & VFC_STATUS_CAPTURE)
+ break;
+ vfc_i2c_delay_no_busy(dev, 100);
+ }
+ if(!timeout) {
+ printk(KERN_WARNING "vfc%d: capture timed out\n",
+ dev->instance);
+ return -ETIMEDOUT;
+ }
+ return 0;
+}
+
+
+
+static int vfc_set_control_ioctl(struct inode *inode, struct file *file,
+ struct vfc_dev *dev, unsigned long arg)
+{
+ int setcmd, ret = 0;
+
+ if (copy_from_user(&setcmd,(void __user *)arg,sizeof(unsigned int)))
+ return -EFAULT;
+
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCSCTRL) arg=0x%x\n",
+ dev->instance,setcmd));
+
+ switch(setcmd) {
+ case MEMPRST:
+ vfc_lock_device(dev);
+ vfc_memptr_reset(dev);
+ vfc_unlock_device(dev);
+ ret=0;
+ break;
+ case CAPTRCMD:
+ vfc_capture_start(dev);
+ vfc_capture_poll(dev);
+ break;
+ case DIAGMODE:
+ if(capable(CAP_SYS_ADMIN)) {
+ vfc_lock_device(dev);
+ dev->control_reg |= VFC_CONTROL_DIAGMODE;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ vfc_unlock_device(dev);
+ ret = 0;
+ } else {
+ ret = -EPERM;
+ }
+ break;
+ case NORMMODE:
+ vfc_lock_device(dev);
+ dev->control_reg &= ~VFC_CONTROL_DIAGMODE;
+ sbus_writel(dev->control_reg, &dev->regs->control);
+ vfc_unlock_device(dev);
+ ret = 0;
+ break;
+ case CAPTRSTR:
+ vfc_capture_start(dev);
+ ret = 0;
+ break;
+ case CAPTRWAIT:
+ vfc_capture_poll(dev);
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ };
+
+ return ret;
+}
+
+
+int vfc_port_change_ioctl(struct inode *inode, struct file *file,
+ struct vfc_dev *dev, unsigned long arg)
+{
+ int ret = 0;
+ int cmd;
+
+ if(copy_from_user(&cmd, (void __user *)arg, sizeof(unsigned int))) {
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to "
+ "vfc_port_change_ioctl\n",
+ dev->instance));
+ return -EFAULT;
+ }
+
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCPORTCHG) arg=0x%x\n",
+ dev->instance, cmd));
+
+ switch(cmd) {
+ case 1:
+ case 2:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_START) = 0x72;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_STOP) = 0x52;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HC_START) = 0x36;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HC_STOP) = 0x18;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) = VFC_SAA9051_BP2;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C3) = VFC_SAA9051_CT | VFC_SAA9051_SS3;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_SECAM_DELAY) = 0x3e;
+ break;
+ case 3:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_START) = 0x3a;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HSY_STOP) = 0x17;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HC_START) = 0xfa;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HC_STOP) = 0xde;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) =
+ VFC_SAA9051_BY | VFC_SAA9051_PF | VFC_SAA9051_BP2;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C3) = VFC_SAA9051_YC;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_SECAM_DELAY) = 0;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C2) &=
+ ~(VFC_SAA9051_SS0 | VFC_SAA9051_SS1);
+ break;
+ default:
+ ret = -EINVAL;
+ return ret;
+ break;
+ }
+
+ switch(cmd) {
+ case 1:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C2) |=
+ (VFC_SAA9051_SS0 | VFC_SAA9051_SS1);
+ break;
+ case 2:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C2) &=
+ ~(VFC_SAA9051_SS0 | VFC_SAA9051_SS1);
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C2) |= VFC_SAA9051_SS0;
+ break;
+ case 3:
+ break;
+ default:
+ ret = -EINVAL;
+ return ret;
+ break;
+ }
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C3) &= ~(VFC_SAA9051_SS2);
+ ret=vfc_update_saa9051(dev);
+ udelay(500);
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C3) |= (VFC_SAA9051_SS2);
+ ret=vfc_update_saa9051(dev);
+ return ret;
+}
+
+int vfc_set_video_ioctl(struct inode *inode, struct file *file,
+ struct vfc_dev *dev, unsigned long arg)
+{
+ int ret = 0;
+ int cmd;
+
+ if(copy_from_user(&cmd, (void __user *)arg, sizeof(unsigned int))) {
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to "
+ "vfc_set_video_ioctl\n",
+ dev->instance));
+ return ret;
+ }
+
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCSVID) arg=0x%x\n",
+ dev->instance, cmd));
+ switch(cmd) {
+ case STD_NTSC:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~VFC_SAA9051_ALT;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_YPN |
+ VFC_SAA9051_CCFR0 | VFC_SAA9051_CCFR1 | VFC_SAA9051_FS;
+ ret = vfc_update_saa9051(dev);
+ break;
+ case STD_PAL:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~(VFC_SAA9051_YPN |
+ VFC_SAA9051_CCFR1 |
+ VFC_SAA9051_CCFR0 |
+ VFC_SAA9051_FS);
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_ALT;
+ ret = vfc_update_saa9051(dev);
+ break;
+
+ case COLOR_ON:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) |= VFC_SAA9051_CO;
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) &=
+ ~(VFC_SAA9051_BY | VFC_SAA9051_PF);
+ ret = vfc_update_saa9051(dev);
+ break;
+ case MONO:
+ VFC_SAA9051_SA(dev,VFC_SAA9051_C1) &= ~(VFC_SAA9051_CO);
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HORIZ_PEAK) |=
+ (VFC_SAA9051_BY | VFC_SAA9051_PF);
+ ret = vfc_update_saa9051(dev);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ };
+
+ return ret;
+}
+
+int vfc_get_video_ioctl(struct inode *inode, struct file *file,
+ struct vfc_dev *dev, unsigned long arg)
+{
+ int ret = 0;
+ unsigned int status = NO_LOCK;
+ unsigned char buf[1];
+
+ if(vfc_i2c_recvbuf(dev, VFC_SAA9051_ADDR, buf, 1)) {
+ printk(KERN_ERR "vfc%d: Unable to get status\n",
+ dev->instance);
+ return -EIO;
+ }
+
+ if(buf[0] & VFC_SAA9051_HLOCK) {
+ status = NO_LOCK;
+ } else if(buf[0] & VFC_SAA9051_FD) {
+ if(buf[0] & VFC_SAA9051_CD)
+ status = NTSC_COLOR;
+ else
+ status = NTSC_NOCOLOR;
+ } else {
+ if(buf[0] & VFC_SAA9051_CD)
+ status = PAL_COLOR;
+ else
+ status = PAL_NOCOLOR;
+ }
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCGVID) returning status 0x%x; "
+ "buf[0]=%x\n", dev->instance, status, buf[0]));
+
+ if (copy_to_user((void __user *)arg,&status,sizeof(unsigned int))) {
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer to "
+ "vfc_get_video_ioctl\n",
+ dev->instance));
+ return ret;
+ }
+ return ret;
+}
+
+static int vfc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ int ret = 0;
+ unsigned int tmp;
+ struct vfc_dev *dev;
+ void __user *argp = (void __user *)arg;
+
+ dev = vfc_get_dev_ptr(iminor(inode));
+ if(dev == NULL)
+ return -ENODEV;
+
+ switch(cmd & 0x0000ffff) {
+ case VFCGCTRL:
+#if 0
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCGCTRL)\n", dev->instance));
+#endif
+ tmp = sbus_readl(&dev->regs->control);
+ if(copy_to_user(argp, &tmp, sizeof(unsigned int))) {
+ ret = -EFAULT;
+ break;
+ }
+ ret = 0;
+ break;
+ case VFCSCTRL:
+ ret = vfc_set_control_ioctl(inode, file, dev, arg);
+ break;
+ case VFCGVID:
+ ret = vfc_get_video_ioctl(inode, file, dev, arg);
+ break;
+ case VFCSVID:
+ ret = vfc_set_video_ioctl(inode, file, dev, arg);
+ break;
+ case VFCHUE:
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCHUE)\n", dev->instance));
+ if(copy_from_user(&tmp,argp,sizeof(unsigned int))) {
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: User passed bogus pointer "
+ "to IOCTL(VFCHUE)", dev->instance));
+ ret = -EFAULT;
+ } else {
+ VFC_SAA9051_SA(dev,VFC_SAA9051_HUE) = tmp;
+ vfc_update_saa9051(dev);
+ ret = 0;
+ }
+ break;
+ case VFCPORTCHG:
+ ret = vfc_port_change_ioctl(inode, file, dev, arg);
+ break;
+ case VFCRDINFO:
+ ret = -EINVAL;
+ VFC_IOCTL_DEBUG_PRINTK(("vfc%d: IOCTL(VFCRDINFO)\n", dev->instance));
+ break;
+ default:
+ ret = vfc_debug(vfc_get_dev_ptr(iminor(inode)), cmd, argp);
+ break;
+ };
+
+ return ret;
+}
+
+static int vfc_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ unsigned int map_size, ret, map_offset;
+ struct vfc_dev *dev;
+
+ dev = vfc_get_dev_ptr(iminor(file->f_dentry->d_inode));
+ if(dev == NULL)
+ return -ENODEV;
+
+ map_size = vma->vm_end - vma->vm_start;
+ if(map_size > sizeof(struct vfc_regs))
+ map_size = sizeof(struct vfc_regs);
+
+ vma->vm_flags |=
+ (VM_SHM | VM_LOCKED | VM_IO | VM_MAYREAD | VM_MAYWRITE | VM_MAYSHARE);
+ map_offset = (unsigned int) (long)dev->phys_regs;
+ ret = io_remap_pfn_range(vma, vma->vm_start,
+ MK_IOSPACE_PFN(dev->which_io,
+ map_offset >> PAGE_SHIFT),
+ map_size, vma->vm_page_prot);
+
+ if(ret)
+ return -EAGAIN;
+
+ return 0;
+}
+
+
+static struct file_operations vfc_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .ioctl = vfc_ioctl,
+ .mmap = vfc_mmap,
+ .open = vfc_open,
+ .release = vfc_release,
+};
+
+static int vfc_probe(void)
+{
+ struct sbus_bus *sbus;
+ struct sbus_dev *sdev = NULL;
+ int ret;
+ int instance = 0, cards = 0;
+
+ for_all_sbusdev(sdev, sbus) {
+ if (strcmp(sdev->prom_name, "vfc") == 0) {
+ cards++;
+ continue;
+ }
+ }
+
+ if (!cards)
+ return -ENODEV;
+
+ vfc_dev_lst = (struct vfc_dev **)kmalloc(sizeof(struct vfc_dev *) *
+ (cards+1),
+ GFP_KERNEL);
+ if (vfc_dev_lst == NULL)
+ return -ENOMEM;
+ memset(vfc_dev_lst, 0, sizeof(struct vfc_dev *) * (cards + 1));
+ vfc_dev_lst[cards] = NULL;
+
+ ret = register_chrdev(VFC_MAJOR, vfcstr, &vfc_fops);
+ if(ret) {
+ printk(KERN_ERR "Unable to get major number %d\n", VFC_MAJOR);
+ kfree(vfc_dev_lst);
+ return -EIO;
+ }
+ devfs_mk_dir("vfc");
+ instance = 0;
+ for_all_sbusdev(sdev, sbus) {
+ if (strcmp(sdev->prom_name, "vfc") == 0) {
+ vfc_dev_lst[instance]=(struct vfc_dev *)
+ kmalloc(sizeof(struct vfc_dev), GFP_KERNEL);
+ if (vfc_dev_lst[instance] == NULL)
+ return -ENOMEM;
+ ret = init_vfc_device(sdev,
+ vfc_dev_lst[instance],
+ instance);
+ if(ret) {
+ printk(KERN_ERR "Unable to initialize"
+ " vfc%d device\n",
+ instance);
+ } else {
+ }
+
+ instance++;
+ continue;
+ }
+ }
+
+ return 0;
+}
+
+#ifdef MODULE
+int init_module(void)
+#else
+int vfc_init(void)
+#endif
+{
+ return vfc_probe();
+}
+
+#ifdef MODULE
+static void deinit_vfc_device(struct vfc_dev *dev)
+{
+ if(dev == NULL)
+ return;
+ devfs_remove("vfc/%d", dev->instance);
+ sbus_iounmap((unsigned long)dev->regs, sizeof(struct vfc_regs));
+ kfree(dev);
+}
+
+void cleanup_module(void)
+{
+ struct vfc_dev **devp;
+
+ unregister_chrdev(VFC_MAJOR,vfcstr);
+
+ for (devp = vfc_dev_lst; *devp; devp++)
+ deinit_vfc_device(*devp);
+
+ devfs_remove("vfc");
+ kfree(vfc_dev_lst);
+ return;
+}
+#endif
+
+MODULE_LICENSE("GPL");
+