97921a5b03
* 'anholt/drm-intel-next' of /home/airlied/kernel/drm-next: (48 commits) agp/intel-gtt: kill previous_size assignments agp/intel-gtt: kill intel_i830_tlbflush agp/intel: split out gmch/gtt probe, part 1 agp/intel: kill mutli_gmch_chip agp/intel: uncoditionally reconfigure driver on resume agp/intel: split out the GTT support agp/intel: introduce intel-agp.h header file drm/i915: Don't touch PORT_HOTPLUG_EN in intel_dp_detect() drm/i915/pch: Use minimal number of FDI lanes (v2) drm/i915: Add the support of memory self-refresh on Ironlake drm/i915: Move Pineview CxSR and watermark code into update_wm hook. drm/i915: Only save/restore FBC on the platform that supports FBC drm/i915: Fix the incorrect argument for SDVO SET_TV_format command drm/i915: Add support of SDVO on Ibexpeak PCH drm/i915: Don't enable pipe/plane/VCO early (wait for DPMS on). drm/i915: do not read uninitialized ->dev_private Revert "drm/i915: Use a dmi quirk to skip a broken SDVO TV output." drm/i915: implement multifunction SDVO device support drm/i915: remove unused intel_pipe_get_connector() drm/i915: remove connector object in old output structure ...
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
|
|
* Copyright (c) 2007 Intel Corporation
|
|
* Jesse Barnes <jesse.barnes@intel.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/fb.h>
|
|
#include "drmP.h"
|
|
#include "intel_drv.h"
|
|
#include "i915_drv.h"
|
|
|
|
/**
|
|
* intel_ddc_probe
|
|
*
|
|
*/
|
|
bool intel_ddc_probe(struct intel_encoder *intel_encoder)
|
|
{
|
|
u8 out_buf[] = { 0x0, 0x0};
|
|
u8 buf[2];
|
|
int ret;
|
|
struct i2c_msg msgs[] = {
|
|
{
|
|
.addr = 0x50,
|
|
.flags = 0,
|
|
.len = 1,
|
|
.buf = out_buf,
|
|
},
|
|
{
|
|
.addr = 0x50,
|
|
.flags = I2C_M_RD,
|
|
.len = 1,
|
|
.buf = buf,
|
|
}
|
|
};
|
|
|
|
intel_i2c_quirk_set(intel_encoder->enc.dev, true);
|
|
ret = i2c_transfer(intel_encoder->ddc_bus, msgs, 2);
|
|
intel_i2c_quirk_set(intel_encoder->enc.dev, false);
|
|
if (ret == 2)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* intel_ddc_get_modes - get modelist from monitor
|
|
* @connector: DRM connector device to use
|
|
* @adapter: i2c adapter
|
|
*
|
|
* Fetch the EDID information from @connector using the DDC bus.
|
|
*/
|
|
int intel_ddc_get_modes(struct drm_connector *connector,
|
|
struct i2c_adapter *adapter)
|
|
{
|
|
struct edid *edid;
|
|
int ret = 0;
|
|
|
|
intel_i2c_quirk_set(connector->dev, true);
|
|
edid = drm_get_edid(connector, adapter);
|
|
intel_i2c_quirk_set(connector->dev, false);
|
|
if (edid) {
|
|
drm_mode_connector_update_edid_property(connector, edid);
|
|
ret = drm_add_edid_modes(connector, edid);
|
|
connector->display_info.raw_edid = NULL;
|
|
kfree(edid);
|
|
}
|
|
|
|
return ret;
|
|
}
|