Commit cb8ea752 authored Sep 28, 2010 by Chris Wilson

drm/i915: Use i2c bit banging instead of GMBUS

There are several reported instances of GMBUS failing to successfully
read the EDID, so revert back to bit banging until the issue is
resolved.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30371


Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

parent e957d772

drivers/gpu/drm/i915/intel_i2c.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -379,6 +379,9 @@ int intel_setup_gmbus(struct drm_device *dev)

		/* By default use a conservative clock rate */
		bus->reg0 = i \| GMBUS_RATE_100KHZ;

		/* XXX force bit banging until GMBUS is fully debugged */
		bus->force_bit = intel_gpio_create(dev_priv, i);
		}

		intel_i2c_reset(dev_priv->dev);