-#include <linux/version.h>
#include <media/saa7146_vv.h>
static u32 saa7146_i2c_func(struct i2c_adapter *adapter)
saa7146_write(dev, I2C_TRANSFER, *dword);
dev->i2c_op = 1;
+ SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17);
SAA7146_IER_ENABLE(dev, MASK_16|MASK_17);
saa7146_write(dev, MC2, (MASK_00 | MASK_16));
- wait_event_interruptible(dev->i2c_wq, dev->i2c_op == 0);
- if (signal_pending (current)) {
- /* a signal arrived */
- return -ERESTARTSYS;
+ timeout = HZ/100 + 1; /* 10ms */
+ timeout = wait_event_interruptible_timeout(dev->i2c_wq, dev->i2c_op == 0, timeout);
+ if (timeout == -ERESTARTSYS || dev->i2c_op) {
+ SAA7146_IER_DISABLE(dev, MASK_16|MASK_17);
+ SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17);
+ if (timeout == -ERESTARTSYS)
+ /* a signal arrived */
+ return -ERESTARTSYS;
+
+ printk(KERN_WARNING "saa7146_i2c_writeout: timed out waiting for end of xfer\n");
+ return -EIO;
}
status = saa7146_read(dev, I2C_STATUS);
} else {
}
/* wait until we get a transfer done or error */
timeout = jiffies + HZ/100 + 1; /* 10ms */
+ /* first read usually delivers bogus results... */
+ saa7146_i2c_status(dev);
while(1) {
- /**
- * first read usually delivers bogus results...
- */
- saa7146_i2c_status(dev);
status = saa7146_i2c_status(dev);
if ((status & 0x3) != 1)
break;
DEB_I2C(("saa7146_i2c_writeout: timed out waiting for end of xfer\n"));
return -EIO;
}
- if ((++trial < 20) && short_delay)
+ if (++trial < 50 && short_delay)
udelay(10);
else
- msleep(1);
+ msleep(1);
}
}
int i = 0, count = 0;
u32* buffer = dev->d_i2c.cpu_addr;
int err = 0;
- int address_err = 0;
- int short_delay = 0;
+ int address_err = 0;
+ int short_delay = 0;
- if (down_interruptible (&dev->i2c_lock))
+ if (mutex_lock_interruptible(&dev->i2c_lock))
return -ERESTARTSYS;
for(i=0;i<num;i++) {
if( 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) {
goto out;
}
- address_err++;
+ address_err++;
}
DEB_I2C(("error while sending message(s). starting again.\n"));
break;
break;
}
- /* delay a bit before retrying */
- msleep(10);
+ /* delay a bit before retrying */
+ msleep(10);
} while (err != num && retries--);
- /* if every retry had an address error, exit right away */
- if (address_err == retries) {
- goto out;
+ /* if every retry had an address error, exit right away */
+ if (address_err == retries) {
+ goto out;
}
/* if any things had to be read, get the results */
}
}
- up(&dev->i2c_lock);
+ mutex_unlock(&dev->i2c_lock);
return err;
}
/* exported algorithm data */
static struct i2c_algorithm saa7146_algo = {
- .name = "saa7146 i2c algorithm",
- .id = I2C_ALGO_SAA7146,
.master_xfer = saa7146_i2c_xfer,
.functionality = saa7146_i2c_func,
};
saa7146_i2c_reset(dev);
if( NULL != i2c_adapter ) {
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- i2c_adapter->data = dev;
-#else
BUG_ON(!i2c_adapter->class);
i2c_set_adapdata(i2c_adapter,dev);
-#endif
+ i2c_adapter->dev.parent = &dev->pci->dev;
i2c_adapter->algo = &saa7146_algo;
i2c_adapter->algo_data = NULL;
- i2c_adapter->id = I2C_ALGO_SAA7146;
+ i2c_adapter->id = I2C_HW_SAA7146;
i2c_adapter->timeout = SAA7146_I2C_TIMEOUT;
i2c_adapter->retries = SAA7146_I2C_RETRIES;
}