The hw just returns garbage.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49838
Reported-and-tested-by: Vladyslav <[email protected]>
Signed-Off-by: Daniel Vetter <[email protected]>
---
drivers/gpu/drm/i915/intel_i2c.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index e04255e..4a9707d 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);
}
--
1.7.10
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