From f0217c42c9ab3d772e543f635ce628b9478f70b6 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 1 Dec 2009 11:56:30 -0800 Subject: drm/i915: Fix DDC on some systems by clearing BIOS GMBUS setup. This is a sync of a fix I made in the old UMS code. If the BIOS uses the GMBUS and doesn't clear that setup, then our bit-banging I2C can fail, leading to monitors not being detected. Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_drv.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/i915/intel_drv.h') diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 8a22f2508899..9ffa31e13eb3 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -162,6 +162,8 @@ void intel_i2c_destroy(struct i2c_adapter *adapter); int intel_ddc_get_modes(struct intel_output *intel_output); extern bool intel_ddc_probe(struct intel_output *intel_output); void intel_i2c_quirk_set(struct drm_device *dev, bool enable); +void intel_i2c_reset_gmbus(struct drm_device *dev); + extern void intel_crt_init(struct drm_device *dev); extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg); extern bool intel_sdvo_init(struct drm_device *dev, int output_device); -- cgit v1.2.3