diff options
Diffstat (limited to 'drivers/media/common/saa7146_i2c.c')
| -rw-r--r-- | drivers/media/common/saa7146_i2c.c | 23 |
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; |