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| author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2010-09-17 02:10:33 +0000 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2010-09-24 02:15:14 +0000 |
| commit | e029ab0d02b94d633d8e82a46dfdb7fd94a62216 (patch) | |
| tree | 4bd9807493945b64c2af4928c850ace4f93adaf2 | |
| parent | ee40b7d1c0391944cdd328d4e2432bd4c110c644 (diff) | |
| download | talos-op-linux-e029ab0d02b94d633d8e82a46dfdb7fd94a62216.tar.gz talos-op-linux-e029ab0d02b94d633d8e82a46dfdb7fd94a62216.zip | |
viafb: reduce I2C timeout and delay
This patch reduces the value for I2C timeout and udelay.
The udelay was reduced to 10 (old: 40) which is still very high as for
standard-mode I2C even 5 should work. This gives a speedup of factor 4
when talking to I2C devices.
The timeout was reduced to 2 (old: 20) which is taken from the radeon
driver so it should work as well. This gives a speedup of factor 10 when
detecting that there is no I2C device we want to talk to.
This causes a huge improvement of device initialization time.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Cc: Joseph Chan <JosephChan@via.com.tw>
| -rw-r--r-- | drivers/video/via/via_i2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/video/via/via_i2c.c b/drivers/video/via/via_i2c.c index 021112e279de..3844b558b7bd 100644 --- a/drivers/video/via/via_i2c.c +++ b/drivers/video/via/via_i2c.c @@ -202,8 +202,8 @@ static int create_i2c_bus(struct i2c_adapter *adapter, algo->setscl = via_i2c_setscl; algo->getsda = via_i2c_getsda; algo->getscl = via_i2c_getscl; - algo->udelay = 40; - algo->timeout = 20; + algo->udelay = 10; + algo->timeout = 2; algo->data = adap_cfg; sprintf(adapter->name, "viafb i2c io_port idx 0x%02x", |
