diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-05-18 09:12:45 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-18 09:12:51 +0200 |
| commit | b286e21868ea1af724a7a4802da2c8e144fa70de (patch) | |
| tree | 75a3e57a00cf70aab372b5583d2b7bf7f053cbea /drivers/gpu/drm/i915/intel_i2c.c | |
| parent | ed077b58f6146684069975122b1728a9d248a501 (diff) | |
| parent | 1406de8e11eb043681297adf86d6892ff8efc27a (diff) | |
Merge commit 'v2.6.30-rc6' into x86/mm
Merge reason: sync up to -rc6 which has changes to mm/ which we are
going to touch in the commits to follow as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_i2c.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index 5ee9d4c25753..f7061f68d050 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -34,6 +34,21 @@ #include "i915_drm.h" #include "i915_drv.h" +void intel_i2c_quirk_set(struct drm_device *dev, bool enable) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + /* When using bit bashing for I2C, this bit needs to be set to 1 */ + if (!IS_IGD(dev)) + return; + if (enable) + I915_WRITE(CG_2D_DIS, + I915_READ(CG_2D_DIS) | DPCUNIT_CLOCK_GATE_DISABLE); + else + I915_WRITE(CG_2D_DIS, + I915_READ(CG_2D_DIS) & (~DPCUNIT_CLOCK_GATE_DISABLE)); +} + /* * Intel GPIO access functions */ @@ -153,8 +168,10 @@ struct intel_i2c_chan *intel_i2c_create(struct drm_device *dev, const u32 reg, goto out_free; /* JJJ: raise SCL and SDA? */ + intel_i2c_quirk_set(dev, true); set_data(chan, 1); set_clock(chan, 1); + intel_i2c_quirk_set(dev, false); udelay(20); return chan; |