mirror of
https://gitlab.freedesktop.org/mesa/drm.git
synced 2025-12-20 16:20:11 +01:00
9d38448ed3
Okay we have crtc, encoder and connectors. No more outputs exposed beyond driver internals I've broken intel tv connector stuff. Really for TV we should have one TV connector, with a sub property for the type of signal been driven over it
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/*
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2007 Intel Corporation
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* 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 "drmP.h"
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#include "intel_drv.h"
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/**
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* intel_ddc_probe
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*
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*/
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bool intel_ddc_probe(struct intel_output *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(&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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* 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 intel_ddc_get_modes(struct intel_output *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 = drm_get_edid(&intel_output->base, &intel_output->ddc_bus->adapter);
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if (edid) {
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drm_mode_connector_update_edid_property(&intel_output->base, edid);
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ret = drm_add_edid_modes(&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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