drm/i915: workaround IGD i2c bus issue in kernel side (v2)
In IGD, DPCUNIT_CLOCK_GATE_DISABLE bit should be set, otherwise i2c
access will be wrong.
v2: Disable CLOCK_GATE_DISABLE bit after bit bashing as suggested by Eric.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 957daef..cf29430 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -109,7 +109,7 @@
void intel_i2c_destroy(struct intel_i2c_chan *chan);
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);
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);