diff options
| author | Jesse Barnes <jbarnes@hobbes.virtuousgeek.org> | 2007-04-10 09:48:20 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@hobbes.virtuousgeek.org> | 2007-04-10 09:48:20 -0700 |
| commit | c0336989884e75bcd05284257e884754bb5f85b6 (patch) | |
| tree | ee92023dbdd8fd6f728592129cff889473410c14 | |
| parent | 183cbd92dd016f8935f9b58ef9345fde1391173e (diff) | |
Remove some delays from Intel i2c code, we'll need a more comprehensive fix
in the Linux i2c layer to make DDC reliable on old monitors.
| -rw-r--r-- | linux-core/intel_i2c.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/linux-core/intel_i2c.c b/linux-core/intel_i2c.c index d4cf7eef..e23283fb 100644 --- a/linux-core/intel_i2c.c +++ b/linux-core/intel_i2c.c @@ -80,8 +80,8 @@ static void set_clock(void *data, int state_high) else clock_bits = GPIO_CLOCK_DIR_OUT | GPIO_CLOCK_DIR_MASK | GPIO_CLOCK_VAL_MASK; + I915_WRITE(chan->reg, reserved | clock_bits); - udelay(I2C_RISEFALL_TIME); /* wait for the line to change state */ } static void set_data(void *data, int state_high) @@ -103,7 +103,6 @@ static void set_data(void *data, int state_high) GPIO_DATA_VAL_MASK; I915_WRITE(chan->reg, reserved | data_bits); - udelay(I2C_RISEFALL_TIME); /* wait for the line to change state */ } /** @@ -147,7 +146,7 @@ struct intel_i2c_chan *intel_i2c_create(drm_device_t *dev, const u32 reg, chan->algo.setscl = set_clock; chan->algo.getsda = get_data; chan->algo.getscl = get_clock; - chan->algo.udelay = 20; + chan->algo.udelay = 20; /* between calls to (set|get)_(clock|data) */ chan->algo.timeout = usecs_to_jiffies(2200); chan->algo.data = chan; @@ -159,7 +158,6 @@ struct intel_i2c_chan *intel_i2c_create(drm_device_t *dev, const u32 reg, /* JJJ: raise SCL and SDA? */ set_data(chan, 1); set_clock(chan, 1); - udelay(20); return chan; |