forked from Minki/linux
e63340ae6b
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
732 lines
16 KiB
C
732 lines
16 KiB
C
/*
|
|
* 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/fs.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 const 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;
|
|
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 __iomem *)
|
|
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;
|
|
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 = kzalloc(inout.len, GFP_KERNEL);
|
|
if (buffer == NULL)
|
|
return -ENOMEM;
|
|
|
|
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 (sbus_readl(&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_path.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_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 const 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 = 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;
|
|
}
|
|
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;
|
|
sbus_iounmap(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);
|
|
|
|
kfree(vfc_dev_lst);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|