diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-05-13 14:44:20 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-05-19 22:39:55 +0200 |
| commit | 83ee9e645846f0c56bd9b33ee28ead03b416bb25 (patch) | |
| tree | f6d5a2626c506085bae8f7c19f1161777bf842f1 /drivers/gpu/drm/i915 | |
| parent | edc912f58eaec20fd3372d9b1dab33fc28b3b3fd (diff) | |
drm/i915: disable gmbus on i830
The hw just returns garbage.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49838
Reported-and-tested-by: Vladyslav <DFEW.Entwickler@googlemail.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_i2c.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index e04255edc801..4a9707dd0f9c 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -490,6 +490,10 @@ int intel_setup_gmbus(struct drm_device *dev) /* By default use a conservative clock rate */ bus->reg0 = port | GMBUS_RATE_100KHZ; + /* gmbus seems to be broken on i830 */ + if (IS_I830(dev)) + bus->force_bit = true; + intel_gpio_setup(bus, port); } |