2 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
3 * Copyright (c) 2007 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/i2c.h>
29 #include "intel_drv.h"
36 bool intel_ddc_probe(struct intel_output *intel_output)
38 u8 out_buf[] = { 0x0, 0x0};
41 struct i2c_msg msgs[] = {
56 intel_i2c_quirk_set(intel_output->ddc_bus->drm_dev, true);
57 ret = i2c_transfer(&intel_output->ddc_bus->adapter, msgs, 2);
58 intel_i2c_quirk_set(intel_output->ddc_bus->drm_dev, false);
67 * intel_ddc_get_modes - get modelist from monitor
68 * @connector: DRM connector device to use
70 * Fetch the EDID information from @connector using the DDC bus.
72 int intel_ddc_get_modes(struct intel_output *intel_output)
77 intel_i2c_quirk_set(intel_output->ddc_bus->drm_dev, true);
78 edid = drm_get_edid(&intel_output->base,
79 &intel_output->ddc_bus->adapter);
80 intel_i2c_quirk_set(intel_output->ddc_bus->drm_dev, false);
82 drm_mode_connector_update_edid_property(&intel_output->base,
84 ret = drm_add_edid_modes(&intel_output->base, edid);
85 intel_output->base.display_info.raw_edid = NULL;