forked from Minki/linux
89c78134cc
This provides the specific code for Poulsbo, some of which is also used for the later chipsets. We support the GTT, the 2D engine (for console), and the display setup/management. We do not support 3D or the video overlays. In theory enough public info is available to do the video overlay work but that represents a large task. Framebuffer X will run nicely with this but do *NOT* use the VESA X server at the same time as KMS. With a Dell mini 10 things like Xfce4 are nice and usable even when compositing as the CPU has a good path to the memory. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
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* Copyright (c) 2007 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Authers: Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/i2c.h>
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#include <linux/fb.h>
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#include <drm/drmP.h>
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#include "psb_intel_drv.h"
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/**
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* psb_intel_ddc_probe
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*
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*/
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bool psb_intel_ddc_probe(struct psb_intel_output *psb_intel_output)
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{
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u8 out_buf[] = { 0x0, 0x0 };
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u8 buf[2];
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int ret;
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struct i2c_msg msgs[] = {
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{
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.addr = 0x50,
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.flags = 0,
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.len = 1,
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.buf = out_buf,
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},
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{
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.addr = 0x50,
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.flags = I2C_M_RD,
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.len = 1,
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.buf = buf,
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}
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};
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ret = i2c_transfer(&psb_intel_output->ddc_bus->adapter, msgs, 2);
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if (ret == 2)
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return true;
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return false;
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}
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/**
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* psb_intel_ddc_get_modes - get modelist from monitor
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* @connector: DRM connector device to use
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*
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* Fetch the EDID information from @connector using the DDC bus.
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*/
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int psb_intel_ddc_get_modes(struct psb_intel_output *psb_intel_output)
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{
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struct edid *edid;
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int ret = 0;
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edid =
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drm_get_edid(&psb_intel_output->base,
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&psb_intel_output->ddc_bus->adapter);
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if (edid) {
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drm_mode_connector_update_edid_property(&psb_intel_output->
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base, edid);
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ret = drm_add_edid_modes(&psb_intel_output->base, edid);
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kfree(edid);
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}
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return ret;
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}
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