From: Chris Wilson Date: Tue, 28 Sep 2010 12:35:47 +0000 (+0100) Subject: drm/i915: Use i2c bit banging instead of GMBUS X-Git-Tag: v2.6.37-rc1~77^2~31^2~27 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cb8ea7527b813dd6e19fb07328f7867a5f0a8d0a;p=profile%2Fivi%2Fkernel-x86-ivi.git 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 --- diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index 9192024..2449a74 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -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);