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Commit 0b5c541b authored by Keith Packard's avatar Keith Packard
Browse files

drm/i915: Enable eDP panel power during I2C initialization sequence 



The DP i2c initialization code does a couple of i2c transactions,
which means that an eDP panel must be powered up.

Signed-off-by: default avatarKeith Packard <keithp@keithp.com>
Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 8c241fef

drivers/gpu/drm/i915/intel_dp.c

+9 −1
Original line number Diff line number Diff line
@@ -595,10 +595,15 @@ intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, 
	return -EREMOTEIO;

}



static void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp);

static void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp);



static int

intel_dp_i2c_init(struct intel_dp *intel_dp,

		  struct intel_connector *intel_connector, const char *name)

{

	int	ret;



	DRM_DEBUG_KMS("i2c_init %s\n", name);

	intel_dp->algo.running = false;

	intel_dp->algo.address = 0;
@@ -612,7 +617,10 @@ intel_dp_i2c_init(struct intel_dp *intel_dp, 
	intel_dp->adapter.algo_data = &intel_dp->algo;

	intel_dp->adapter.dev.parent = &intel_connector->base.kdev;



	return i2c_dp_aux_add_bus(&intel_dp->adapter);

	ironlake_edp_panel_vdd_on(intel_dp);

	ret = i2c_dp_aux_add_bus(&intel_dp->adapter);

	ironlake_edp_panel_vdd_off(intel_dp);

	return ret;

}



static bool