2 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
3 * Copyright (c) 2007, 2010 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
26 #include <linux/slab.h>
27 #include <linux/i2c.h>
30 #include "intel_drv.h"
37 bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus)
39 struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private;
40 u8 out_buf[] = { 0x0, 0x0};
42 struct i2c_msg msgs[] = {
57 return i2c_transfer(&dev_priv->gmbus[ddc_bus].adapter, msgs, 2) == 2;
61 * intel_ddc_get_modes - get modelist from monitor
62 * @connector: DRM connector device to use
63 * @adapter: i2c adapter
65 * Fetch the EDID information from @connector using the DDC bus.
67 int intel_ddc_get_modes(struct drm_connector *connector,
68 struct i2c_adapter *adapter)
73 edid = drm_get_edid(connector, adapter);
75 drm_mode_connector_update_edid_property(connector, edid);
76 ret = drm_add_edid_modes(connector, edid);
77 connector->display_info.raw_edid = NULL;