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| author | Oliver Endriss <o.endriss@gmx.de> | 2006-10-27 23:02:01 +0200 |
|---|---|---|
| committer | Oliver Endriss <o.endriss@gmx.de> | 2006-10-27 23:02:01 +0200 |
| commit | 5976d7a95cb0c575c2f7b935918851482a58cf42 (patch) | |
| tree | 59ffa700f700e79e8ab7f2781f22657db747f98c /linux/drivers/media/common/saa7146_i2c.c | |
| parent | 5a79261ed0e580692725278b845ba9e9c97001e7 (diff) | |
| download | mediapointer-dvb-s2-5976d7a95cb0c575c2f7b935918851482a58cf42.tar.gz mediapointer-dvb-s2-5976d7a95cb0c575c2f7b935918851482a58cf42.tar.bz2 | |
[saa7146_i2c] short_delay mode fixed for fast machines
From: Oliver Endriss <o.endriss@gmx.de>
TT DVB-C 2300 runs at 137 kHz I2C speed. short_delay mode did not work
reliably on fast machines with that speed. Increased max loop count from
20 to 50. Moved dummy access out of the loop.
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Diffstat (limited to 'linux/drivers/media/common/saa7146_i2c.c')
| -rw-r--r-- | linux/drivers/media/common/saa7146_i2c.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/linux/drivers/media/common/saa7146_i2c.c b/linux/drivers/media/common/saa7146_i2c.c index b87dfe8df..8cf024271 100644 --- a/linux/drivers/media/common/saa7146_i2c.c +++ b/linux/drivers/media/common/saa7146_i2c.c @@ -218,11 +218,9 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d } /* 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; @@ -233,10 +231,10 @@ static int saa7146_i2c_writeout(struct saa7146_dev *dev, u32* dword, int short_d 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); } } |