0867b42113
This is an initial staging driver for the GMA500. It's been stripped out of the PVR drivers and crunched together from various bits of code and different kernels. Currently it's unaccelerated but still pretty snappy even compositing with the frame buffer X server. Lots of work is needed to rework the ttm and bo interfaces from being ripped out and then 2D acceleration wants putting back for framebuffer and somehow eventually via DRM. There is no support for the parts without open source userspace (video accelerators, 3D) as per kernel policy. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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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