nouveau_connector.c 24.9 KB
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/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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.
 *
 */

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#include <acpi/button.h>

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#include "drmP.h"
#include "drm_edid.h"
#include "drm_crtc_helper.h"
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#include "nouveau_reg.h"
#include "nouveau_drv.h"
#include "nouveau_encoder.h"
#include "nouveau_crtc.h"
#include "nouveau_connector.h"
#include "nouveau_hw.h"

static struct nouveau_encoder *
find_encoder_by_type(struct drm_connector *connector, int type)
{
	struct drm_device *dev = connector->dev;
	struct nouveau_encoder *nv_encoder;
	struct drm_mode_object *obj;
	int i, id;

	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		id = connector->encoder_ids[i];
		if (!id)
			break;

		obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
		if (!obj)
			continue;
		nv_encoder = nouveau_encoder(obj_to_encoder(obj));

		if (type == OUTPUT_ANY || nv_encoder->dcb->type == type)
			return nv_encoder;
	}

	return NULL;
}

struct nouveau_connector *
nouveau_encoder_connector_get(struct nouveau_encoder *encoder)
{
	struct drm_device *dev = to_drm_encoder(encoder)->dev;
	struct drm_connector *drm_connector;

	list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head) {
		if (drm_connector->encoder == to_drm_encoder(encoder))
			return nouveau_connector(drm_connector);
	}

	return NULL;
}

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/*TODO: This could use improvement, and learn to handle the fixed
 *      BIOS tables etc.  It's fine currently, for its only user.
 */
int
nouveau_connector_bpp(struct drm_connector *connector)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);

	if (nv_connector->edid && nv_connector->edid->revision >= 4) {
		u8 bpc = ((nv_connector->edid->input & 0x70) >> 3) + 4;
		if (bpc > 4)
			return bpc;
	}

	return 18;
}
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static void
nouveau_connector_destroy(struct drm_connector *drm_connector)
{
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	struct nouveau_connector *nv_connector =
		nouveau_connector(drm_connector);
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	struct drm_device *dev;
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	if (!nv_connector)
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		return;

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	dev = nv_connector->base.dev;
	NV_DEBUG_KMS(dev, "\n");

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	kfree(nv_connector->edid);
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	drm_sysfs_connector_remove(drm_connector);
	drm_connector_cleanup(drm_connector);
	kfree(drm_connector);
}

static struct nouveau_i2c_chan *
nouveau_connector_ddc_detect(struct drm_connector *connector,
			     struct nouveau_encoder **pnv_encoder)
{
	struct drm_device *dev = connector->dev;
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	int i;
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	for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
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		struct nouveau_i2c_chan *i2c = NULL;
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		struct nouveau_encoder *nv_encoder;
		struct drm_mode_object *obj;
		int id;

		id = connector->encoder_ids[i];
		if (!id)
			break;

		obj = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
		if (!obj)
			continue;
		nv_encoder = nouveau_encoder(obj_to_encoder(obj));
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		if (nv_encoder->dcb->i2c_index < 0xf)
			i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
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		if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
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			*pnv_encoder = nv_encoder;
			return i2c;
		}
	}

	return NULL;
}

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static struct nouveau_encoder *
nouveau_connector_of_detect(struct drm_connector *connector)
{
#ifdef __powerpc__
	struct drm_device *dev = connector->dev;
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder;
	struct device_node *cn, *dn = pci_device_to_OF_node(dev->pdev);

	if (!dn ||
	    !((nv_encoder = find_encoder_by_type(connector, OUTPUT_TMDS)) ||
	      (nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG))))
		return NULL;

	for_each_child_of_node(dn, cn) {
		const char *name = of_get_property(cn, "name", NULL);
		const void *edid = of_get_property(cn, "EDID", NULL);
		int idx = name ? name[strlen(name) - 1] - 'A' : 0;

		if (nv_encoder->dcb->i2c_index == idx && edid) {
			nv_connector->edid =
				kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
			of_node_put(cn);
			return nv_encoder;
		}
	}
#endif
	return NULL;
}

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static void
nouveau_connector_set_encoder(struct drm_connector *connector,
			      struct nouveau_encoder *nv_encoder)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
	struct drm_device *dev = connector->dev;

	if (nv_connector->detected_encoder == nv_encoder)
		return;
	nv_connector->detected_encoder = nv_encoder;

	if (nv_encoder->dcb->type == OUTPUT_LVDS ||
	    nv_encoder->dcb->type == OUTPUT_TMDS) {
		connector->doublescan_allowed = false;
		connector->interlace_allowed = false;
	} else {
		connector->doublescan_allowed = true;
		if (dev_priv->card_type == NV_20 ||
		   (dev_priv->card_type == NV_10 &&
		    (dev->pci_device & 0x0ff0) != 0x0100 &&
		    (dev->pci_device & 0x0ff0) != 0x0150))
			/* HW is broken */
			connector->interlace_allowed = false;
		else
			connector->interlace_allowed = true;
	}

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	if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
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		drm_connector_property_set_value(connector,
			dev->mode_config.dvi_i_subconnector_property,
			nv_encoder->dcb->type == OUTPUT_TMDS ?
			DRM_MODE_SUBCONNECTOR_DVID :
			DRM_MODE_SUBCONNECTOR_DVIA);
	}
}

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static bool
nouveau_connector_poll_allowed(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct drm_crtc *crtc;
	bool spare_crtc = false;

	if (dev_priv->card_type >= NV_50) {
		return true;
	} else {
		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
			spare_crtc |= !crtc->enabled;

		return spare_crtc;
	}
}

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static enum drm_connector_status
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nouveau_connector_detect(struct drm_connector *connector, bool force)
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{
	struct drm_device *dev = connector->dev;
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = NULL;
	struct nouveau_i2c_chan *i2c;
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	int type;
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	/* Cleanup the previous EDID block. */
	if (nv_connector->edid) {
		drm_mode_connector_update_edid_property(connector, NULL);
		kfree(nv_connector->edid);
		nv_connector->edid = NULL;
	}
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	i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
	if (i2c) {
		nv_connector->edid = drm_get_edid(connector, &i2c->adapter);
		drm_mode_connector_update_edid_property(connector,
							nv_connector->edid);
		if (!nv_connector->edid) {
			NV_ERROR(dev, "DDC responded, but no EDID for %s\n",
				 drm_get_connector_name(connector));
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			goto detect_analog;
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		}

		if (nv_encoder->dcb->type == OUTPUT_DP &&
		    !nouveau_dp_detect(to_drm_encoder(nv_encoder))) {
			NV_ERROR(dev, "Detected %s, but failed init\n",
				 drm_get_connector_name(connector));
			return connector_status_disconnected;
		}

		/* Override encoder type for DVI-I based on whether EDID
		 * says the display is digital or analog, both use the
		 * same i2c channel so the value returned from ddc_detect
		 * isn't necessarily correct.
		 */
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		if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
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			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
				type = OUTPUT_TMDS;
			else
				type = OUTPUT_ANALOG;

			nv_encoder = find_encoder_by_type(connector, type);
			if (!nv_encoder) {
				NV_ERROR(dev, "Detected %d encoder on %s, "
					      "but no object!\n", type,
					 drm_get_connector_name(connector));
				return connector_status_disconnected;
			}
		}

		nouveau_connector_set_encoder(connector, nv_encoder);
		return connector_status_connected;
	}

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	nv_encoder = nouveau_connector_of_detect(connector);
	if (nv_encoder) {
		nouveau_connector_set_encoder(connector, nv_encoder);
		return connector_status_connected;
	}

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detect_analog:
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	nv_encoder = find_encoder_by_type(connector, OUTPUT_ANALOG);
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	if (!nv_encoder && !nouveau_tv_disable)
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		nv_encoder = find_encoder_by_type(connector, OUTPUT_TV);
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	if (nv_encoder &&
	    (force || nouveau_connector_poll_allowed(connector))) {
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		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
		struct drm_encoder_helper_funcs *helper =
						encoder->helper_private;

		if (helper->detect(encoder, connector) ==
						connector_status_connected) {
			nouveau_connector_set_encoder(connector, nv_encoder);
			return connector_status_connected;
		}

	}

	return connector_status_disconnected;
}

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static enum drm_connector_status
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nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
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{
	struct drm_device *dev = connector->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = NULL;
	enum drm_connector_status status = connector_status_disconnected;

	/* Cleanup the previous EDID block. */
	if (nv_connector->edid) {
		drm_mode_connector_update_edid_property(connector, NULL);
		kfree(nv_connector->edid);
		nv_connector->edid = NULL;
	}

	nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
	if (!nv_encoder)
		return connector_status_disconnected;

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	/* Try retrieving EDID via DDC */
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	if (!dev_priv->vbios.fp_no_ddc) {
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		status = nouveau_connector_detect(connector, force);
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		if (status == connector_status_connected)
			goto out;
	}

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	/* On some laptops (Sony, i'm looking at you) there appears to
	 * be no direct way of accessing the panel's EDID.  The only
	 * option available to us appears to be to ask ACPI for help..
	 *
	 * It's important this check's before trying straps, one of the
	 * said manufacturer's laptops are configured in such a way
	 * the nouveau decides an entry in the VBIOS FP mode table is
	 * valid - it's not (rh#613284)
	 */
	if (nv_encoder->dcb->lvdsconf.use_acpi_for_edid) {
		if (!nouveau_acpi_edid(dev, connector)) {
			status = connector_status_connected;
			goto out;
		}
	}

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	/* If no EDID found above, and the VBIOS indicates a hardcoded
	 * modeline is avalilable for the panel, set it as the panel's
	 * native mode and exit.
	 */
	if (nouveau_bios_fp_mode(dev, NULL) && (dev_priv->vbios.fp_no_ddc ||
	    nv_encoder->dcb->lvdsconf.use_straps_for_mode)) {
		status = connector_status_connected;
		goto out;
	}

	/* Still nothing, some VBIOS images have a hardcoded EDID block
	 * stored for the panel stored in them.
	 */
	if (!dev_priv->vbios.fp_no_ddc) {
		struct edid *edid =
			(struct edid *)nouveau_bios_embedded_edid(dev);
		if (edid) {
			nv_connector->edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
			*(nv_connector->edid) = *edid;
			status = connector_status_connected;
		}
	}

out:
#if defined(CONFIG_ACPI_BUTTON) || \
	(defined(CONFIG_ACPI_BUTTON_MODULE) && defined(MODULE))
	if (status == connector_status_connected &&
	    !nouveau_ignorelid && !acpi_lid_open())
		status = connector_status_unknown;
#endif

	drm_mode_connector_update_edid_property(connector, nv_connector->edid);
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Albert Damen 已提交
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	nouveau_connector_set_encoder(connector, nv_encoder);
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	return status;
}

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static void
nouveau_connector_force(struct drm_connector *connector)
{
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	struct nouveau_connector *nv_connector = nouveau_connector(connector);
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	struct nouveau_encoder *nv_encoder;
	int type;

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	if (nv_connector->dcb->type == DCB_CONNECTOR_DVI_I) {
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		if (connector->force == DRM_FORCE_ON_DIGITAL)
			type = OUTPUT_TMDS;
		else
			type = OUTPUT_ANALOG;
	} else
		type = OUTPUT_ANY;

	nv_encoder = find_encoder_by_type(connector, type);
	if (!nv_encoder) {
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		NV_ERROR(connector->dev, "can't find encoder to force %s on!\n",
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			 drm_get_connector_name(connector));
		connector->status = connector_status_disconnected;
		return;
	}

	nouveau_connector_set_encoder(connector, nv_encoder);
}

static int
nouveau_connector_set_property(struct drm_connector *connector,
			       struct drm_property *property, uint64_t value)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
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	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
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	struct drm_device *dev = connector->dev;
	int ret;

	/* Scaling mode */
	if (property == dev->mode_config.scaling_mode_property) {
		struct nouveau_crtc *nv_crtc = NULL;
		bool modeset = false;

		switch (value) {
		case DRM_MODE_SCALE_NONE:
		case DRM_MODE_SCALE_FULLSCREEN:
		case DRM_MODE_SCALE_CENTER:
		case DRM_MODE_SCALE_ASPECT:
			break;
		default:
			return -EINVAL;
		}

		/* LVDS always needs gpu scaling */
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		if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS &&
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		    value == DRM_MODE_SCALE_NONE)
			return -EINVAL;

		/* Changing between GPU and panel scaling requires a full
		 * modeset
		 */
		if ((nv_connector->scaling_mode == DRM_MODE_SCALE_NONE) ||
		    (value == DRM_MODE_SCALE_NONE))
			modeset = true;
		nv_connector->scaling_mode = value;

		if (connector->encoder && connector->encoder->crtc)
			nv_crtc = nouveau_crtc(connector->encoder->crtc);
		if (!nv_crtc)
			return 0;

		if (modeset || !nv_crtc->set_scale) {
			ret = drm_crtc_helper_set_mode(&nv_crtc->base,
							&nv_crtc->base.mode,
							nv_crtc->base.x,
							nv_crtc->base.y, NULL);
			if (!ret)
				return -EINVAL;
		} else {
			ret = nv_crtc->set_scale(nv_crtc, value, true);
			if (ret)
				return ret;
		}

		return 0;
	}

	/* Dithering */
	if (property == dev->mode_config.dithering_mode_property) {
		struct nouveau_crtc *nv_crtc = NULL;

		if (value == DRM_MODE_DITHERING_ON)
			nv_connector->use_dithering = true;
		else
			nv_connector->use_dithering = false;

		if (connector->encoder && connector->encoder->crtc)
			nv_crtc = nouveau_crtc(connector->encoder->crtc);

		if (!nv_crtc || !nv_crtc->set_dither)
			return 0;

		return nv_crtc->set_dither(nv_crtc, nv_connector->use_dithering,
					   true);
	}

	if (nv_encoder && nv_encoder->dcb->type == OUTPUT_TV)
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		return get_slave_funcs(encoder)->set_property(
			encoder, connector, property, value);
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	return -EINVAL;
}

static struct drm_display_mode *
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nouveau_connector_native_mode(struct drm_connector *connector)
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{
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	struct drm_connector_helper_funcs *helper = connector->helper_private;
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct drm_device *dev = connector->dev;
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	struct drm_display_mode *mode, *largest = NULL;
	int high_w = 0, high_h = 0, high_v = 0;

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	list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
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		if (helper->mode_valid(connector, mode) != MODE_OK ||
		    (mode->flags & DRM_MODE_FLAG_INTERLACE))
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			continue;

		/* Use preferred mode if there is one.. */
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		if (mode->type & DRM_MODE_TYPE_PREFERRED) {
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			NV_DEBUG_KMS(dev, "native mode from preferred\n");
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			return drm_mode_duplicate(dev, mode);
		}

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		/* Otherwise, take the resolution with the largest width, then
		 * height, then vertical refresh
		 */
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		if (mode->hdisplay < high_w)
			continue;

		if (mode->hdisplay == high_w && mode->vdisplay < high_h)
			continue;

		if (mode->hdisplay == high_w && mode->vdisplay == high_h &&
		    mode->vrefresh < high_v)
			continue;

		high_w = mode->hdisplay;
		high_h = mode->vdisplay;
		high_v = mode->vrefresh;
		largest = mode;
	}

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	NV_DEBUG_KMS(dev, "native mode from largest: %dx%d@%d\n",
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		      high_w, high_h, high_v);
	return largest ? drm_mode_duplicate(dev, largest) : NULL;
}

struct moderec {
	int hdisplay;
	int vdisplay;
};

static struct moderec scaler_modes[] = {
	{ 1920, 1200 },
	{ 1920, 1080 },
	{ 1680, 1050 },
	{ 1600, 1200 },
	{ 1400, 1050 },
	{ 1280, 1024 },
	{ 1280, 960 },
	{ 1152, 864 },
	{ 1024, 768 },
	{ 800, 600 },
	{ 720, 400 },
	{ 640, 480 },
	{ 640, 400 },
	{ 640, 350 },
	{}
};

static int
nouveau_connector_scaler_modes_add(struct drm_connector *connector)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct drm_display_mode *native = nv_connector->native_mode, *m;
	struct drm_device *dev = connector->dev;
	struct moderec *mode = &scaler_modes[0];
	int modes = 0;

	if (!native)
		return 0;

	while (mode->hdisplay) {
		if (mode->hdisplay <= native->hdisplay &&
		    mode->vdisplay <= native->vdisplay) {
			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
					 drm_mode_vrefresh(native), false,
					 false, false);
			if (!m)
				continue;

			m->type |= DRM_MODE_TYPE_DRIVER;

			drm_mode_probed_add(connector, m);
			modes++;
		}

		mode++;
	}

	return modes;
}

static int
nouveau_connector_get_modes(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
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	struct drm_nouveau_private *dev_priv = dev->dev_private;
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	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
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	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
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	int ret = 0;

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	/* destroy the native mode, the attached monitor could have changed.
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	 */
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	if (nv_connector->native_mode) {
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		drm_mode_destroy(dev, nv_connector->native_mode);
		nv_connector->native_mode = NULL;
	}

	if (nv_connector->edid)
		ret = drm_add_edid_modes(connector, nv_connector->edid);
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	else
	if (nv_encoder->dcb->type == OUTPUT_LVDS &&
	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
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	     dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
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		struct drm_display_mode mode;

		nouveau_bios_fp_mode(dev, &mode);
		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
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	}
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	/* Find the native mode if this is a digital panel, if we didn't
	 * find any modes through DDC previously add the native mode to
	 * the list of modes.
	 */
	if (!nv_connector->native_mode)
		nv_connector->native_mode =
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			nouveau_connector_native_mode(connector);
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	if (ret == 0 && nv_connector->native_mode) {
		struct drm_display_mode *mode;

		mode = drm_mode_duplicate(dev, nv_connector->native_mode);
		drm_mode_probed_add(connector, mode);
		ret = 1;
	}

	if (nv_encoder->dcb->type == OUTPUT_TV)
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		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
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656 657
	if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS ||
	    nv_connector->dcb->type == DCB_CONNECTOR_eDP)
658 659 660 661 662
		ret += nouveau_connector_scaler_modes_add(connector);

	return ret;
}

663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
static unsigned
get_tmds_link_bandwidth(struct drm_connector *connector)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
	struct dcb_entry *dcb = nv_connector->detected_encoder->dcb;

	if (dcb->location != DCB_LOC_ON_CHIP ||
	    dev_priv->chipset >= 0x46)
		return 165000;
	else if (dev_priv->chipset >= 0x40)
		return 155000;
	else if (dev_priv->chipset >= 0x18)
		return 135000;
	else
		return 112000;
}

681 682 683 684 685 686
static int
nouveau_connector_mode_valid(struct drm_connector *connector,
			     struct drm_display_mode *mode)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
687
	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
688 689 690 691 692
	unsigned min_clock = 25000, max_clock = min_clock;
	unsigned clock = mode->clock;

	switch (nv_encoder->dcb->type) {
	case OUTPUT_LVDS:
693 694 695
		if (nv_connector->native_mode &&
		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
		     mode->vdisplay > nv_connector->native_mode->vdisplay))
696 697 698 699 700 701
			return MODE_PANEL;

		min_clock = 0;
		max_clock = 400000;
		break;
	case OUTPUT_TMDS:
702 703 704
		max_clock = get_tmds_link_bandwidth(connector);
		if (nouveau_duallink && nv_encoder->dcb->duallink_possible)
			max_clock *= 2;
705 706 707 708 709 710 711
		break;
	case OUTPUT_ANALOG:
		max_clock = nv_encoder->dcb->crtconf.maxfreq;
		if (!max_clock)
			max_clock = 350000;
		break;
	case OUTPUT_TV:
712
		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
713 714 715 716 717 718
	case OUTPUT_DP:
		if (nv_encoder->dp.link_bw == DP_LINK_BW_2_7)
			max_clock = nv_encoder->dp.link_nr * 270000;
		else
			max_clock = nv_encoder->dp.link_nr * 162000;

719
		clock = clock * nouveau_connector_bpp(connector) / 8;
720
		break;
721 722 723
	default:
		BUG_ON(1);
		return MODE_BAD;
724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
	}

	if (clock < min_clock)
		return MODE_CLOCK_LOW;

	if (clock > max_clock)
		return MODE_CLOCK_HIGH;

	return MODE_OK;
}

static struct drm_encoder *
nouveau_connector_best_encoder(struct drm_connector *connector)
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);

	if (nv_connector->detected_encoder)
		return to_drm_encoder(nv_connector->detected_encoder);

	return NULL;
}

static const struct drm_connector_helper_funcs
nouveau_connector_helper_funcs = {
	.get_modes = nouveau_connector_get_modes,
	.mode_valid = nouveau_connector_mode_valid,
	.best_encoder = nouveau_connector_best_encoder,
};

static const struct drm_connector_funcs
nouveau_connector_funcs = {
	.dpms = drm_helper_connector_dpms,
	.save = NULL,
	.restore = NULL,
	.detect = nouveau_connector_detect,
	.destroy = nouveau_connector_destroy,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = nouveau_connector_set_property,
	.force = nouveau_connector_force
};

765 766 767 768 769 770 771 772 773 774 775
static const struct drm_connector_funcs
nouveau_connector_funcs_lvds = {
	.dpms = drm_helper_connector_dpms,
	.save = NULL,
	.restore = NULL,
	.detect = nouveau_connector_detect_lvds,
	.destroy = nouveau_connector_destroy,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = nouveau_connector_set_property,
	.force = nouveau_connector_force
};
776

777 778
struct drm_connector *
nouveau_connector_create(struct drm_device *dev, int index)
779
{
780
	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
781 782
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_connector *nv_connector = NULL;
783
	struct dcb_connector_table_entry *dcb = NULL;
784
	struct drm_connector *connector;
785
	int type, ret = 0;
786

787
	NV_DEBUG_KMS(dev, "\n");
788

789 790 791 792 793 794 795
	if (index >= dev_priv->vbios.dcb.connector.entries)
		return ERR_PTR(-EINVAL);

	dcb = &dev_priv->vbios.dcb.connector.entry[index];
	if (dcb->drm)
		return dcb->drm;

796 797 798
	switch (dcb->type) {
	case DCB_CONNECTOR_VGA:
		type = DRM_MODE_CONNECTOR_VGA;
799
		break;
800 801 802 803
	case DCB_CONNECTOR_TV_0:
	case DCB_CONNECTOR_TV_1:
	case DCB_CONNECTOR_TV_3:
		type = DRM_MODE_CONNECTOR_TV;
804
		break;
805 806
	case DCB_CONNECTOR_DVI_I:
		type = DRM_MODE_CONNECTOR_DVII;
807
		break;
808 809
	case DCB_CONNECTOR_DVI_D:
		type = DRM_MODE_CONNECTOR_DVID;
810
		break;
811 812 813 814
	case DCB_CONNECTOR_HDMI_0:
	case DCB_CONNECTOR_HDMI_1:
		type = DRM_MODE_CONNECTOR_HDMIA;
		break;
815 816
	case DCB_CONNECTOR_LVDS:
		type = DRM_MODE_CONNECTOR_LVDS;
817
		funcs = &nouveau_connector_funcs_lvds;
818
		break;
819 820
	case DCB_CONNECTOR_DP:
		type = DRM_MODE_CONNECTOR_DisplayPort;
821
		break;
822 823 824
	case DCB_CONNECTOR_eDP:
		type = DRM_MODE_CONNECTOR_eDP;
		break;
825
	default:
826
		NV_ERROR(dev, "unknown connector type: 0x%02x!!\n", dcb->type);
827
		return ERR_PTR(-EINVAL);
828 829
	}

830 831
	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
	if (!nv_connector)
832
		return ERR_PTR(-ENOMEM);
833 834 835
	nv_connector->dcb = dcb;
	connector = &nv_connector->base;

836 837 838 839
	/* defaults, will get overridden in detect() */
	connector->interlace_allowed = false;
	connector->doublescan_allowed = false;

840
	drm_connector_init(dev, connector, funcs, type);
841 842
	drm_connector_helper_add(connector, &nouveau_connector_helper_funcs);

843 844 845 846 847 848 849 850 851 852 853 854
	/* Check if we need dithering enabled */
	if (dcb->type == DCB_CONNECTOR_LVDS) {
		bool dummy, is_24bit = false;

		ret = nouveau_bios_parse_lvds_table(dev, 0, &dummy, &is_24bit);
		if (ret) {
			NV_ERROR(dev, "Error parsing LVDS table, disabling "
				 "LVDS\n");
			goto fail;
		}

		nv_connector->use_dithering = !is_24bit;
855 856
	}

857
	/* Init DVI-I specific properties */
858
	if (dcb->type == DCB_CONNECTOR_DVI_I) {
859 860 861 862 863
		drm_mode_create_dvi_i_properties(dev);
		drm_connector_attach_property(connector, dev->mode_config.dvi_i_subconnector_property, 0);
		drm_connector_attach_property(connector, dev->mode_config.dvi_i_select_subconnector_property, 0);
	}

864 865 866
	switch (dcb->type) {
	case DCB_CONNECTOR_VGA:
		if (dev_priv->card_type >= NV_50) {
867 868 869 870
			drm_connector_attach_property(connector,
					dev->mode_config.scaling_mode_property,
					nv_connector->scaling_mode);
		}
871 872 873 874 875
		/* fall-through */
	case DCB_CONNECTOR_TV_0:
	case DCB_CONNECTOR_TV_1:
	case DCB_CONNECTOR_TV_3:
		nv_connector->scaling_mode = DRM_MODE_SCALE_NONE;
876 877 878

		if (nv_gf4_disp_arch(dev))
			connector->polled = DRM_CONNECTOR_POLL_CONNECT;
879 880 881 882 883 884 885 886 887 888 889
		break;
	default:
		nv_connector->scaling_mode = DRM_MODE_SCALE_FULLSCREEN;

		drm_connector_attach_property(connector,
				dev->mode_config.scaling_mode_property,
				nv_connector->scaling_mode);
		drm_connector_attach_property(connector,
				dev->mode_config.dithering_mode_property,
				nv_connector->use_dithering ?
				DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
890

891 892 893 894 895 896
		if (dcb->type != DCB_CONNECTOR_LVDS) {
			if (dev_priv->card_type >= NV_50)
				connector->polled = DRM_CONNECTOR_POLL_HPD;
			else
				connector->polled = DRM_CONNECTOR_POLL_CONNECT;
		}
897
		break;
898 899 900
	}

	drm_sysfs_connector_add(connector);
901 902
	dcb->drm = connector;
	return dcb->drm;
903 904 905 906

fail:
	drm_connector_cleanup(connector);
	kfree(connector);
907
	return ERR_PTR(ret);
908

909
}