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@xxxxxx> Cc: Joseph Chan <JosephChan@xxxxxxxxxx> Cc: Jonathan Corbet <corbet@xxxxxxx> --- 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 021112e..3844b55 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", -- 1.6.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
