aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/common/saa7146_i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/common/saa7146_i2c.c')
-rw-r--r--drivers/media/common/saa7146_i2c.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/media/common/saa7146_i2c.c b/drivers/media/common/saa7146_i2c.c
index 8c85efc2652..7e7689afae6 100644
--- a/drivers/media/common/saa7146_i2c.c
+++ b/drivers/media/common/saa7146_i2c.c
@@ -202,7 +202,8 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
/* a signal arrived */
return -ERESTARTSYS;
- printk(KERN_WARNING "saa7146_i2c_writeout: timed out waiting for end of xfer\n");
+ printk(KERN_WARNING "%s %s [irq]: timed out waiting for end of xfer\n",
+ dev->name, __FUNCTION__);
return -EIO;
}
status = saa7146_read(dev, I2C_STATUS);
@@ -219,7 +220,8 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
break;
}
if (time_after(jiffies,timeout)) {
- printk(KERN_WARNING "saa7146_i2c_writeout: timed out waiting for MC2\n");
+ printk(KERN_WARNING "%s %s: timed out waiting for MC2\n",
+ dev->name, __FUNCTION__);
return -EIO;
}
}
@@ -235,7 +237,8 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
/* this is normal when probing the bus
* (no answer from nonexisistant device...)
*/
- DEB_I2C(("saa7146_i2c_writeout: timed out waiting for end of xfer\n"));
+ printk(KERN_WARNING "%s %s [poll]: timed out waiting for end of xfer\n",
+ dev->name, __FUNCTION__);
return -EIO;
}
if (++trial < 50 && short_delay)
@@ -246,8 +249,16 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
}
/* give a detailed status report */
- if ( 0 != (status & SAA7146_I2C_ERR)) {
-
+ if ( 0 != (status & (SAA7146_I2C_SPERR | SAA7146_I2C_APERR |
+ SAA7146_I2C_DTERR | SAA7146_I2C_DRERR |
+ SAA7146_I2C_AL | SAA7146_I2C_ERR |
+ SAA7146_I2C_BUSY)) ) {
+
+ if ( 0 == (status & SAA7146_I2C_ERR) ||
+ 0 == (status & SAA7146_I2C_BUSY) ) {
+ /* it may take some time until ERR goes high - ignore */
+ DEB_I2C(("unexpected i2c status %04x\n", status));
+ }
if( 0 != (status & SAA7146_I2C_SPERR) ) {
DEB_I2C(("error due to invalid start/stop condition.\n"));
}
@@ -277,7 +288,7 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d
return 0;
}
-int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *msgs, int num, int retries)
+static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *msgs, int num, int retries)
{
int i = 0, count = 0;
u32* buffer = dev->d_i2c.cpu_addr;