nouveau_connector.c 41.4 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 <linux/pm_runtime.h>
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#include <linux/vga_switcheroo.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_edid.h>
#include <drm/drm_crtc_helper.h>
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#include "nouveau_reg.h"
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#include "nouveau_drv.h"
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#include "dispnv04/hw.h"
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#include "nouveau_acpi.h"
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#include "nouveau_display.h"
#include "nouveau_connector.h"
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#include "nouveau_encoder.h"
#include "nouveau_crtc.h"
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#include <nvif/class.h>
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#include <nvif/cl0046.h>
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#include <nvif/event.h>

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struct drm_display_mode *
nouveau_conn_native_mode(struct drm_connector *connector)
{
	const struct drm_connector_helper_funcs *helper = connector->helper_private;
	struct nouveau_drm *drm = nouveau_drm(connector->dev);
	struct drm_device *dev = connector->dev;
	struct drm_display_mode *mode, *largest = NULL;
	int high_w = 0, high_h = 0, high_v = 0;

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

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

		/* Otherwise, take the resolution with the largest width, then
		 * height, then vertical refresh
		 */
		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;
	}

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

int
nouveau_conn_atomic_get_property(struct drm_connector *connector,
				 const struct drm_connector_state *state,
				 struct drm_property *property, u64 *val)
{
	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
	struct nouveau_display *disp = nouveau_display(connector->dev);
	struct drm_device *dev = connector->dev;

	if (property == dev->mode_config.scaling_mode_property)
		*val = asyc->scaler.mode;
	else if (property == disp->underscan_property)
		*val = asyc->scaler.underscan.mode;
	else if (property == disp->underscan_hborder_property)
		*val = asyc->scaler.underscan.hborder;
	else if (property == disp->underscan_vborder_property)
		*val = asyc->scaler.underscan.vborder;
	else if (property == disp->dithering_mode)
		*val = asyc->dither.mode;
	else if (property == disp->dithering_depth)
		*val = asyc->dither.depth;
	else if (property == disp->vibrant_hue_property)
		*val = asyc->procamp.vibrant_hue;
	else if (property == disp->color_vibrance_property)
		*val = asyc->procamp.color_vibrance;
	else
		return -EINVAL;

	return 0;
}

int
nouveau_conn_atomic_set_property(struct drm_connector *connector,
				 struct drm_connector_state *state,
				 struct drm_property *property, u64 val)
{
	struct drm_device *dev = connector->dev;
	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
	struct nouveau_display *disp = nouveau_display(dev);

	if (property == dev->mode_config.scaling_mode_property) {
		switch (val) {
		case DRM_MODE_SCALE_NONE:
			/* We allow 'None' for EDID modes, even on a fixed
			 * panel (some exist with support for lower refresh
			 * rates, which people might want to use for power-
			 * saving purposes).
			 *
			 * Non-EDID modes will force the use of GPU scaling
			 * to the native mode regardless of this setting.
			 */
			switch (connector->connector_type) {
			case DRM_MODE_CONNECTOR_LVDS:
			case DRM_MODE_CONNECTOR_eDP:
				/* ... except prior to G80, where the code
				 * doesn't support such things.
				 */
				if (disp->disp.oclass < NV50_DISP)
					return -EINVAL;
				break;
			default:
				break;
			}
		case DRM_MODE_SCALE_FULLSCREEN:
		case DRM_MODE_SCALE_CENTER:
		case DRM_MODE_SCALE_ASPECT:
			break;
		default:
			return -EINVAL;
		}

		if (asyc->scaler.mode != val) {
			asyc->scaler.mode = val;
			asyc->set.scaler = true;
		}
	} else
	if (property == disp->underscan_property) {
		if (asyc->scaler.underscan.mode != val) {
			asyc->scaler.underscan.mode = val;
			asyc->set.scaler = true;
		}
	} else
	if (property == disp->underscan_hborder_property) {
		if (asyc->scaler.underscan.hborder != val) {
			asyc->scaler.underscan.hborder = val;
			asyc->set.scaler = true;
		}
	} else
	if (property == disp->underscan_vborder_property) {
		if (asyc->scaler.underscan.vborder != val) {
			asyc->scaler.underscan.vborder = val;
			asyc->set.scaler = true;
		}
	} else
	if (property == disp->dithering_mode) {
		if (asyc->dither.mode != val) {
			asyc->dither.mode = val;
			asyc->set.dither = true;
		}
	} else
	if (property == disp->dithering_depth) {
		if (asyc->dither.mode != val) {
			asyc->dither.depth = val;
			asyc->set.dither = true;
		}
	} else
	if (property == disp->vibrant_hue_property) {
		if (asyc->procamp.vibrant_hue != val) {
			asyc->procamp.vibrant_hue = val;
			asyc->set.procamp = true;
		}
	} else
	if (property == disp->color_vibrance_property) {
		if (asyc->procamp.color_vibrance != val) {
			asyc->procamp.color_vibrance = val;
			asyc->set.procamp = true;
		}
	} else {
		return -EINVAL;
	}

	return 0;
}

void
nouveau_conn_atomic_destroy_state(struct drm_connector *connector,
				  struct drm_connector_state *state)
{
	struct nouveau_conn_atom *asyc = nouveau_conn_atom(state);
	__drm_atomic_helper_connector_destroy_state(&asyc->state);
	kfree(asyc);
}

struct drm_connector_state *
nouveau_conn_atomic_duplicate_state(struct drm_connector *connector)
{
	struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
	struct nouveau_conn_atom *asyc;
	if (!(asyc = kmalloc(sizeof(*asyc), GFP_KERNEL)))
		return NULL;
	__drm_atomic_helper_connector_duplicate_state(connector, &asyc->state);
	asyc->dither = armc->dither;
	asyc->scaler = armc->scaler;
	asyc->procamp = armc->procamp;
	asyc->set.mask = 0;
	return &asyc->state;
}

void
nouveau_conn_reset(struct drm_connector *connector)
{
	struct nouveau_conn_atom *asyc;

	if (WARN_ON(!(asyc = kzalloc(sizeof(*asyc), GFP_KERNEL))))
		return;

	if (connector->state)
		__drm_atomic_helper_connector_destroy_state(connector->state);
	__drm_atomic_helper_connector_reset(connector, &asyc->state);
	asyc->dither.mode = DITHERING_MODE_AUTO;
	asyc->dither.depth = DITHERING_DEPTH_AUTO;
	asyc->scaler.mode = DRM_MODE_SCALE_NONE;
	asyc->scaler.underscan.mode = UNDERSCAN_OFF;
	asyc->procamp.color_vibrance = 150;
	asyc->procamp.vibrant_hue = 90;

	if (nouveau_display(connector->dev)->disp.oclass < NV50_DISP) {
		switch (connector->connector_type) {
		case DRM_MODE_CONNECTOR_LVDS:
			/* See note in nouveau_conn_atomic_set_property(). */
			asyc->scaler.mode = DRM_MODE_SCALE_FULLSCREEN;
			break;
		default:
			break;
		}
	}
}

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void
nouveau_conn_attach_properties(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct nouveau_conn_atom *armc = nouveau_conn_atom(connector->state);
	struct nouveau_display *disp = nouveau_display(dev);

	/* Init DVI-I specific properties. */
	if (connector->connector_type == DRM_MODE_CONNECTOR_DVII)
		drm_object_attach_property(&connector->base, dev->mode_config.
					   dvi_i_subconnector_property, 0);

	/* Add overscan compensation options to digital outputs. */
	if (disp->underscan_property &&
	    (connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
	     connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
	     connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
	     connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)) {
		drm_object_attach_property(&connector->base,
					   disp->underscan_property,
					   UNDERSCAN_OFF);
		drm_object_attach_property(&connector->base,
					   disp->underscan_hborder_property, 0);
		drm_object_attach_property(&connector->base,
					   disp->underscan_vborder_property, 0);
	}

	/* Add hue and saturation options. */
	if (disp->vibrant_hue_property)
		drm_object_attach_property(&connector->base,
					   disp->vibrant_hue_property,
					   armc->procamp.vibrant_hue);
	if (disp->color_vibrance_property)
		drm_object_attach_property(&connector->base,
					   disp->color_vibrance_property,
					   armc->procamp.color_vibrance);

	/* Scaling mode property. */
	switch (connector->connector_type) {
	case DRM_MODE_CONNECTOR_TV:
		break;
	case DRM_MODE_CONNECTOR_VGA:
		if (disp->disp.oclass < NV50_DISP)
			break; /* Can only scale on DFPs. */
		/* Fall-through. */
	default:
		drm_object_attach_property(&connector->base, dev->mode_config.
					   scaling_mode_property,
					   armc->scaler.mode);
		break;
	}

	/* Dithering properties. */
	switch (connector->connector_type) {
	case DRM_MODE_CONNECTOR_TV:
	case DRM_MODE_CONNECTOR_VGA:
		break;
	default:
		if (disp->dithering_mode) {
			drm_object_attach_property(&connector->base,
						   disp->dithering_mode,
						   armc->dither.mode);
		}
		if (disp->dithering_depth) {
			drm_object_attach_property(&connector->base,
						   disp->dithering_depth,
						   armc->dither.depth);
		}
		break;
	}
}

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MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
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int nouveau_tv_disable = 0;
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module_param_named(tv_disable, nouveau_tv_disable, int, 0400);

MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
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int nouveau_ignorelid = 0;
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module_param_named(ignorelid, nouveau_ignorelid, int, 0400);

MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (default: enabled)");
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int nouveau_duallink = 1;
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module_param_named(duallink, nouveau_duallink, int, 0400);
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MODULE_PARM_DESC(hdmimhz, "Force a maximum HDMI pixel clock (in MHz)");
int nouveau_hdmimhz = 0;
module_param_named(hdmimhz, nouveau_hdmimhz, int, 0400);

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struct nouveau_encoder *
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find_encoder(struct drm_connector *connector, int type)
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{
	struct drm_device *dev = connector->dev;
	struct nouveau_encoder *nv_encoder;
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	struct drm_encoder *enc;
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	int i, id;

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

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		enc = drm_encoder_find(dev, id);
		if (!enc)
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			continue;
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		nv_encoder = nouveau_encoder(enc);
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		if (type == DCB_OUTPUT_ANY ||
		    (nv_encoder->dcb && nv_encoder->dcb->type == type))
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			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;
}

static void
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nouveau_connector_destroy(struct drm_connector *connector)
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{
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	struct nouveau_connector *nv_connector = nouveau_connector(connector);
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	nvif_notify_fini(&nv_connector->hpd);
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	kfree(nv_connector->edid);
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	drm_connector_unregister(connector);
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	drm_connector_cleanup(connector);
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	if (nv_connector->aux.transfer)
		drm_dp_aux_unregister(&nv_connector->aux);
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	kfree(connector);
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}

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static struct nouveau_encoder *
nouveau_connector_ddc_detect(struct drm_connector *connector)
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{
	struct drm_device *dev = connector->dev;
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	struct nouveau_connector *nv_connector = nouveau_connector(connector);
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	struct nouveau_drm *drm = nouveau_drm(dev);
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	struct nvkm_gpio *gpio = nvxx_gpio(&drm->device);
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	struct nouveau_encoder *nv_encoder;
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	struct drm_encoder *encoder;
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	int i, panel = -ENODEV;

	/* eDP panels need powering on by us (if the VBIOS doesn't default it
	 * to on) before doing any AUX channel transactions.  LVDS panel power
	 * is handled by the SOR itself, and not required for LVDS DDC.
	 */
	if (nv_connector->type == DCB_CONNECTOR_eDP) {
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		panel = nvkm_gpio_get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff);
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		if (panel == 0) {
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			nvkm_gpio_set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
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			msleep(300);
		}
	}
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	for (i = 0; nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER; i++) {
		int id = connector->encoder_ids[i];
		if (id == 0)
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			break;

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		encoder = drm_encoder_find(dev, id);
		if (!encoder)
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			continue;
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		nv_encoder = nouveau_encoder(encoder);
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		if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
			int ret = nouveau_dp_detect(nv_encoder);
			if (ret == 0)
				break;
		} else
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		if ((vga_switcheroo_handler_flags() &
		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
		    nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
		    nv_encoder->i2c) {
			int ret;
			vga_switcheroo_lock_ddc(dev->pdev);
			ret = nvkm_probe_i2c(nv_encoder->i2c, 0x50);
			vga_switcheroo_unlock_ddc(dev->pdev);
			if (ret)
				break;
		} else
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		if (nv_encoder->i2c) {
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			if (nvkm_probe_i2c(nv_encoder->i2c, 0x50))
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				break;
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		}
	}

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	/* eDP panel not detected, restore panel power GPIO to previous
	 * state to avoid confusing the SOR for other output types.
	 */
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	if (!nv_encoder && panel == 0)
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		nvkm_gpio_set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, panel);
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	return nv_encoder;
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}

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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 ||
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	    !((nv_encoder = find_encoder(connector, DCB_OUTPUT_TMDS)) ||
	      (nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG))))
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		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);
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	struct nouveau_drm *drm = nouveau_drm(connector->dev);
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	struct drm_device *dev = connector->dev;

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

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	if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
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		connector->interlace_allowed = true;
		connector->doublescan_allowed = true;
	} else
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	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||
	    nv_encoder->dcb->type == DCB_OUTPUT_TMDS) {
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		connector->doublescan_allowed = false;
		connector->interlace_allowed = false;
	} else {
		connector->doublescan_allowed = true;
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		if (drm->device.info.family == NV_DEVICE_INFO_V0_KELVIN ||
		    (drm->device.info.family == NV_DEVICE_INFO_V0_CELSIUS &&
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		     (dev->pdev->device & 0x0ff0) != 0x0100 &&
		     (dev->pdev->device & 0x0ff0) != 0x0150))
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			/* HW is broken */
			connector->interlace_allowed = false;
		else
			connector->interlace_allowed = true;
	}

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

static enum drm_connector_status
551
nouveau_connector_detect(struct drm_connector *connector, bool force)
552
553
{
	struct drm_device *dev = connector->dev;
554
	struct nouveau_drm *drm = nouveau_drm(dev);
555
556
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = NULL;
557
	struct nouveau_encoder *nv_partner;
558
	struct i2c_adapter *i2c;
559
	int type;
560
561
	int ret;
	enum drm_connector_status conn_status = connector_status_disconnected;
562

563
564
565
566
567
568
	/* 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;
	}
569

570
	ret = pm_runtime_get_sync(connector->dev->dev);
571
	if (ret < 0 && ret != -EACCES)
572
573
		return conn_status;

574
575
	nv_encoder = nouveau_connector_ddc_detect(connector);
	if (nv_encoder && (i2c = nv_encoder->i2c) != NULL) {
576
577
578
579
580
581
582
583
		if ((vga_switcheroo_handler_flags() &
		     VGA_SWITCHEROO_CAN_SWITCH_DDC) &&
		    nv_connector->type == DCB_CONNECTOR_LVDS)
			nv_connector->edid = drm_get_edid_switcheroo(connector,
								     i2c);
		else
			nv_connector->edid = drm_get_edid(connector, i2c);

584
585
586
		drm_mode_connector_update_edid_property(connector,
							nv_connector->edid);
		if (!nv_connector->edid) {
587
			NV_ERROR(drm, "DDC responded, but no EDID for %s\n",
588
				 connector->name);
589
			goto detect_analog;
590
591
592
593
594
595
596
		}

		/* 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.
		 */
597
		nv_partner = NULL;
598
599
600
601
602
603
604
605
606
		if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS)
			nv_partner = find_encoder(connector, DCB_OUTPUT_ANALOG);
		if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
			nv_partner = find_encoder(connector, DCB_OUTPUT_TMDS);

		if (nv_partner && ((nv_encoder->dcb->type == DCB_OUTPUT_ANALOG &&
				    nv_partner->dcb->type == DCB_OUTPUT_TMDS) ||
				   (nv_encoder->dcb->type == DCB_OUTPUT_TMDS &&
				    nv_partner->dcb->type == DCB_OUTPUT_ANALOG))) {
607
			if (nv_connector->edid->input & DRM_EDID_INPUT_DIGITAL)
608
				type = DCB_OUTPUT_TMDS;
609
			else
610
				type = DCB_OUTPUT_ANALOG;
611

612
			nv_encoder = find_encoder(connector, type);
613
614
615
		}

		nouveau_connector_set_encoder(connector, nv_encoder);
616
617
		conn_status = connector_status_connected;
		goto out;
618
619
	}

620
621
622
	nv_encoder = nouveau_connector_of_detect(connector);
	if (nv_encoder) {
		nouveau_connector_set_encoder(connector, nv_encoder);
623
624
		conn_status = connector_status_connected;
		goto out;
625
626
	}

627
detect_analog:
628
	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANALOG);
629
	if (!nv_encoder && !nouveau_tv_disable)
630
		nv_encoder = find_encoder(connector, DCB_OUTPUT_TV);
631
	if (nv_encoder && force) {
632
		struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
633
		const struct drm_encoder_helper_funcs *helper =
634
635
636
637
638
						encoder->helper_private;

		if (helper->detect(encoder, connector) ==
						connector_status_connected) {
			nouveau_connector_set_encoder(connector, nv_encoder);
639
640
			conn_status = connector_status_connected;
			goto out;
641
642
643
644
		}

	}

645
646
647
648
649
650
 out:

	pm_runtime_mark_last_busy(connector->dev->dev);
	pm_runtime_put_autosuspend(connector->dev->dev);

	return conn_status;
651
652
}

653
static enum drm_connector_status
654
nouveau_connector_detect_lvds(struct drm_connector *connector, bool force)
655
656
{
	struct drm_device *dev = connector->dev;
657
	struct nouveau_drm *drm = nouveau_drm(dev);
658
659
660
661
662
663
664
665
666
667
668
	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;
	}

669
	nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS);
670
671
672
	if (!nv_encoder)
		return connector_status_disconnected;

673
	/* Try retrieving EDID via DDC */
674
	if (!drm->vbios.fp_no_ddc) {
675
		status = nouveau_connector_detect(connector, force);
676
677
678
679
		if (status == connector_status_connected)
			goto out;
	}

680
681
682
683
684
685
686
687
688
689
	/* 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) {
690
		if ((nv_connector->edid = nouveau_acpi_edid(dev, connector))) {
691
692
693
694
695
			status = connector_status_connected;
			goto out;
		}
	}

696
697
698
699
	/* 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.
	 */
700
	if (nouveau_bios_fp_mode(dev, NULL) && (drm->vbios.fp_no_ddc ||
701
702
703
704
705
706
707
708
	    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.
	 */
709
	if (!drm->vbios.fp_no_ddc) {
710
711
712
		struct edid *edid =
			(struct edid *)nouveau_bios_embedded_edid(dev);
		if (edid) {
713
714
715
716
			nv_connector->edid =
					kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
			if (nv_connector->edid)
				status = connector_status_connected;
717
718
719
720
721
722
723
724
725
726
727
728
		}
	}

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);
729
	nouveau_connector_set_encoder(connector, nv_encoder);
730
731
732
	return status;
}

733
734
735
static void
nouveau_connector_force(struct drm_connector *connector)
{
736
	struct nouveau_drm *drm = nouveau_drm(connector->dev);
737
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
738
739
740
	struct nouveau_encoder *nv_encoder;
	int type;

741
	if (nv_connector->type == DCB_CONNECTOR_DVI_I) {
742
		if (connector->force == DRM_FORCE_ON_DIGITAL)
743
			type = DCB_OUTPUT_TMDS;
744
		else
745
			type = DCB_OUTPUT_ANALOG;
746
	} else
747
		type = DCB_OUTPUT_ANY;
748

749
	nv_encoder = find_encoder(connector, type);
750
	if (!nv_encoder) {
751
		NV_ERROR(drm, "can't find encoder to force %s on!\n",
752
			 connector->name);
753
754
755
756
757
758
759
760
761
762
763
		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)
{
764
	struct nouveau_conn_atom *asyc = nouveau_conn_atom(connector->state);
765
766
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
767
	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
768
	struct nouveau_crtc *nv_crtc = NULL;
769
770
	int ret;

771
772
773
	if (connector->dev->mode_config.funcs->atomic_commit)
		return drm_atomic_helper_connector_set_property(connector, property, value);

774
775
776
777
778
779
780
781
	ret = connector->funcs->atomic_set_property(&nv_connector->base,
						    &asyc->state,
						    property, value);
	if (ret) {
		if (nv_encoder && nv_encoder->dcb->type == DCB_OUTPUT_TV)
			return get_slave_funcs(encoder)->set_property(
				encoder, connector, property, value);
		return ret;
782
783
	}

784
785
786
787
788
789
	nv_connector->scaling_mode = asyc->scaler.mode;
	nv_connector->underscan = asyc->scaler.underscan.mode;
	nv_connector->underscan_hborder = asyc->scaler.underscan.hborder;
	nv_connector->underscan_vborder = asyc->scaler.underscan.vborder;
	nv_connector->dithering_mode = asyc->dither.mode;
	nv_connector->dithering_depth = asyc->dither.depth;
790

791
792
793
	if (connector->encoder && connector->encoder->crtc)
		nv_crtc = nouveau_crtc(connector->encoder->crtc);
	if (!nv_crtc)
794
795
		return 0;

796
797
	nv_crtc->vibrant_hue = asyc->procamp.vibrant_hue - 90;
	nv_crtc->color_vibrance = asyc->procamp.color_vibrance - 100;
798

799
800
801
802
	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;
803

804
	return 0;
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
}

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 &&
844
845
846
		    mode->vdisplay <= native->vdisplay &&
		    (mode->hdisplay != native->hdisplay ||
		     mode->vdisplay != native->vdisplay)) {
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
			m = drm_cvt_mode(dev, mode->hdisplay, mode->vdisplay,
					 drm_mode_vrefresh(native), false,
					 false, false);
			if (!m)
				continue;

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

		mode++;
	}

	return modes;
}

863
864
865
static void
nouveau_connector_detect_depth(struct drm_connector *connector)
{
866
	struct nouveau_drm *drm = nouveau_drm(connector->dev);
867
868
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
869
	struct nvbios *bios = &drm->vbios;
870
871
872
873
874
875
876
	struct drm_display_mode *mode = nv_connector->native_mode;
	bool duallink;

	/* if the edid is feeling nice enough to provide this info, use it */
	if (nv_connector->edid && connector->display_info.bpc)
		return;

877
878
879
880
881
882
883
	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
	if (nv_connector->type == DCB_CONNECTOR_eDP) {
		connector->display_info.bpc = 6;
		return;
	}

	/* we're out of options unless we're LVDS, default to 8bpc */
884
	if (nv_encoder->dcb->type != DCB_OUTPUT_LVDS) {
885
		connector->display_info.bpc = 8;
886
		return;
887
888
889
	}

	connector->display_info.bpc = 6;
890
891
892
893
894
895
896
897
898
899
900
901

	/* LVDS: panel straps */
	if (bios->fp_no_ddc) {
		if (bios->fp.if_is_24bit)
			connector->display_info.bpc = 8;
		return;
	}

	/* LVDS: DDC panel, need to first determine the number of links to
	 * know which if_is_24bit flag to check...
	 */
	if (nv_connector->edid &&
902
	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG)
903
904
905
906
907
908
909
910
911
		duallink = ((u8 *)nv_connector->edid)[121] == 2;
	else
		duallink = mode->clock >= bios->fp.duallink_transition_clk;

	if ((!duallink && (bios->fp.strapless_is_24bit & 1)) ||
	    ( duallink && (bios->fp.strapless_is_24bit & 2)))
		connector->display_info.bpc = 8;
}

912
913
914
915
static int
nouveau_connector_get_modes(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
916
	struct nouveau_drm *drm = nouveau_drm(dev);
917
918
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
	struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
919
	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
920
921
	int ret = 0;

922
	/* destroy the native mode, the attached monitor could have changed.
923
	 */
924
	if (nv_connector->native_mode) {
925
926
927
928
929
930
		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);
931
	else
932
	if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS &&
933
	    (nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
934
	     drm->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
935
936
937
938
		struct drm_display_mode mode;

		nouveau_bios_fp_mode(dev, &mode);
		nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
939
	}
940

941
942
943
944
945
946
	/* Determine display colour depth for everything except LVDS now,
	 * DP requires this before mode_valid() is called.
	 */
	if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
		nouveau_connector_detect_depth(connector);

947
948
949
950
951
	/* 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)
952
		nv_connector->native_mode = nouveau_conn_native_mode(connector);
953
954
955
956
957
958
959
960
	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;
	}

961
962
963
	/* Determine LVDS colour depth, must happen after determining
	 * "native" mode as some VBIOS tables require us to use the
	 * pixel clock as part of the lookup...
964
	 */
965
966
	if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
		nouveau_connector_detect_depth(connector);
967

968
	if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
969
		ret = get_slave_funcs(encoder)->get_modes(encoder, connector);
970

971
972
973
	if (nv_connector->type == DCB_CONNECTOR_LVDS ||
	    nv_connector->type == DCB_CONNECTOR_LVDS_SPWG ||
	    nv_connector->type == DCB_CONNECTOR_eDP)
974
975
976
977
978
		ret += nouveau_connector_scaler_modes_add(connector);

	return ret;
}

979
static unsigned
980
get_tmds_link_bandwidth(struct drm_connector *connector, bool hdmi)
981
982
{
	struct nouveau_connector *nv_connector = nouveau_connector(connector);
983
	struct nouveau_drm *drm = nouveau_drm(connector->dev);
984
	struct dcb_output *dcb = nv_connector->detected_encoder->dcb;
985

986
987
988
989
990
991
992
993
994
995
996
	if (hdmi) {
		if (nouveau_hdmimhz > 0)
			return nouveau_hdmimhz * 1000;
		/* Note: these limits are conservative, some Fermi's
		 * can do 297 MHz. Unclear how this can be determined.
		 */
		if (drm->device.info.family >= NV_DEVICE_INFO_V0_KEPLER)
			return 297000;
		if (drm->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
			return 225000;
	}
997
	if (dcb->location != DCB_LOC_ON_CHIP ||
998
	    drm->device.info.chipset >= 0x46)
999
		return 165000;
1000
	else if (drm->device.info.chipset >= 0x40)
1001
		return 155000;
1002
	else if (drm->device.info.chipset >= 0x18)
1003
1004
1005
1006
1007
		return 135000;
	else
		return 112000;
}

1008
1009
1010
1011
1012
1013
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;
1014
	struct drm_encoder *encoder = to_drm_encoder(nv_encoder);
1015
1016
	unsigned min_clock = 25000, max_clock = min_clock;
	unsigned clock = mode->clock;
1017
	bool hdmi;
1018
1019

	switch (nv_encoder->dcb->type) {
1020
	case DCB_OUTPUT_LVDS:
1021
1022
1023
		if (nv_connector->native_mode &&
		    (mode->hdisplay > nv_connector->native_mode->hdisplay ||
		     mode->vdisplay > nv_connector->native_mode->vdisplay))
1024
1025
1026
1027
1028
			return MODE_PANEL;

		min_clock = 0;
		max_clock = 400000;
		break;
1029
	case DCB_OUTPUT_TMDS:
1030
1031
1032
1033
		hdmi = drm_detect_hdmi_monitor(nv_connector->edid);
		max_clock = get_tmds_link_bandwidth(connector, hdmi);
		if (!hdmi && nouveau_duallink &&
		    nv_encoder->dcb->duallink_possible)
1034
			max_clock *= 2;
1035
		break;
1036
	case DCB_OUTPUT_ANALOG:
1037
1038
1039
1040
		max_clock = nv_encoder->dcb->crtconf.maxfreq;
		if (!max_clock)
			max_clock = 350000;
		break;
1041
	case DCB_OUTPUT_TV:
1042
		return get_slave_funcs(encoder)->mode_valid(encoder, mode);
1043
	case DCB_OUTPUT_DP:
1044
1045
		max_clock  = nv_encoder->dp.link_nr;
		max_clock *= nv_encoder->dp.link_bw;
1046
		clock = clock * (connector->display_info.bpc * 3) / 10;
1047
		break;
1048
1049
1050
	default:
		BUG_ON(1);
		return MODE_BAD;
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
	}

	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,
};

1080
1081
1082
1083
1084
1085
1086
1087
static int
nouveau_connector_dpms(struct drm_connector *connector, int mode)
{
	if (connector->dev->mode_config.funcs->atomic_commit)
		return drm_atomic_helper_connector_dpms(connector, mode);
	return drm_helper_connector_dpms(connector, mode);
}

1088
1089
static const struct drm_connector_funcs
nouveau_connector_funcs = {
1090
	.dpms = nouveau_connector_dpms,
1091
	.reset = nouveau_conn_reset,
1092
	.detect = nouveau_connector_detect,
1093
	.force = nouveau_connector_force,
1094
1095
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = nouveau_connector_set_property,
1096
1097
1098
1099
1100
	.destroy = nouveau_connector_destroy,
	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
	.atomic_set_property = nouveau_conn_atomic_set_property,
	.atomic_get_property = nouveau_conn_atomic_get_property,
1101
1102
};

1103
1104
static const struct drm_connector_funcs
nouveau_connector_funcs_lvds = {
1105
	.dpms = nouveau_connector_dpms,
1106
	.reset = nouveau_conn_reset,
1107
	.detect = nouveau_connector_detect_lvds,
1108
	.force = nouveau_connector_force,
1109
1110
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = nouveau_connector_set_property,
1111
1112
1113
1114
1115
	.destroy = nouveau_connector_destroy,
	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
	.atomic_set_property = nouveau_conn_atomic_set_property,
	.atomic_get_property = nouveau_conn_atomic_get_property,
1116
};
1117

1118
static int
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
nouveau_connector_dp_dpms(struct drm_connector *connector, int mode)
{
	struct nouveau_encoder *nv_encoder = NULL;

	if (connector->encoder)
		nv_encoder = nouveau_encoder(connector->encoder);
	if (nv_encoder && nv_encoder->dcb &&
	    nv_encoder->dcb->type == DCB_OUTPUT_DP) {
		if (mode == DRM_MODE_DPMS_ON) {
			u8 data = DP_SET_POWER_D0;
1129
			nvkm_wraux(nv_encoder->aux, DP_SET_POWER, &data, 1);
1130
1131
1132
			usleep_range(1000, 2000);
		} else {
			u8 data = DP_SET_POWER_D3;
1133
			nvkm_wraux(nv_encoder->aux, DP_SET_POWER, &data, 1);
1134
1135
1136
		}
	}

1137
	return drm_helper_connector_dpms(connector, mode);
1138
1139
1140
1141
1142
}

static const struct drm_connector_funcs
nouveau_connector_funcs_dp = {
	.dpms = nouveau_connector_dp_dpms,
1143
	.reset = nouveau_conn_reset,
1144
	.detect = nouveau_connector_detect,
1145
	.force = nouveau_connector_force,
1146
1147
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = nouveau_connector_set_property,
1148
1149
1150
1151
1152
	.destroy = nouveau_connector_destroy,
	.atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
	.atomic_destroy_state = nouveau_conn_atomic_destroy_state,
	.atomic_set_property = nouveau_conn_atomic_set_property,
	.atomic_get_property = nouveau_conn_atomic_get_property,
1153
1154
};

1155
static int
1156
nouveau_connector_hotplug(struct nvif_notify *notify)
1157
1158
{
	struct nouveau_connector *nv_connector =
1159
		container_of(notify, typeof(*nv_connector), hpd);
1160
	struct drm_connector *connector = &nv_connector->base;
1161
	struct nouveau_drm *drm = nouveau_drm(connector->dev);
1162
	const struct nvif_notify_conn_rep_v0 *rep = notify->data;
1163
	const char *name = connector->name;
1164

1165
	if (rep->mask & NVIF_NOTIFY_CONN_V0_IRQ) {
1166
	} else {
1167
		bool plugged = (rep->mask != NVIF_NOTIFY_CONN_V0_UNPLUG);
1168

1169
1170
1171
1172
		NV_DEBUG(drm, "%splugged %s\n", plugged ? "" : "un", name);
		drm_helper_hpd_irq_event(connector->dev);
	}

1173
	return NVIF_NOTIFY_KEEP;
1174
1175
}

1176
static ssize_t
1177
nouveau_connector_aux_xfer(struct drm_dp_aux *obj, struct drm_dp_aux_msg *msg)
1178
1179
{
	struct nouveau_connector *nv_connector =
1180
		container_of(obj, typeof(*nv_connector), aux);
1181
	struct nouveau_encoder *nv_encoder;
1182
	struct nvkm_i2c_aux *aux;
1183
1184
1185
	int ret;

	nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
1186
	if (!nv_encoder || !(aux = nv_encoder->aux))
1187
1188
1189
1190
1191
1192
		return -ENODEV;
	if (WARN_ON(msg->size > 16))
		return -E2BIG;
	if (msg->size == 0)
		return msg->size;

1193
	ret = nvkm_i2c_aux_acquire(aux);
1194
1195
1196
	if (ret)
		return ret;

1197
1198
1199
	ret = nvkm_i2c_aux_xfer(aux, false, msg->request, msg->address,
				msg->buffer, msg->size);
	nvkm_i2c_aux_release(aux);
1200
1201
1202
1203
1204
1205
1206
1207
	if (ret >= 0) {
		msg->reply = ret;
		return msg->size;
	}

	return ret;
}

1208
1209
1210
1211
1212
1213
1214
1215
static int
drm_conntype_from_dcb(enum dcb_connector_type dcb)
{
	switch (dcb) {
	case DCB_CONNECTOR_VGA      : return DRM_MODE_CONNECTOR_VGA;
	case DCB_CONNECTOR_TV_0     :
	case DCB_CONNECTOR_TV_1     :
	case DCB_CONNECTOR_TV_3     : return DRM_MODE_CONNECTOR_TV;
1216
1217
	case DCB_CONNECTOR_DMS59_0  :
	case DCB_CONNECTOR_DMS59_1  :
1218
1219
1220
1221
	case DCB_CONNECTOR_DVI_I    : return DRM_MODE_CONNECTOR_DVII;
	case DCB_CONNECTOR_DVI_D    : return DRM_MODE_CONNECTOR_DVID;
	case DCB_CONNECTOR_LVDS     :
	case DCB_CONNECTOR_LVDS_SPWG: return DRM_MODE_CONNECTOR_LVDS;
1222
1223
	case DCB_CONNECTOR_DMS59_DP0:
	case DCB_CONNECTOR_DMS59_DP1:
1224
1225
1226
	case DCB_CONNECTOR_DP       : return DRM_MODE_CONNECTOR_DisplayPort;
	case DCB_CONNECTOR_eDP      : return DRM_MODE_CONNECTOR_eDP;
	case DCB_CONNECTOR_HDMI_0   :
1227
1228
	case DCB_CONNECTOR_HDMI_1   :
	case DCB_CONNECTOR_HDMI_C   : return DRM_MODE_CONNECTOR_HDMIA;
1229
1230
1231
1232
1233
1234
1235
	default:
		break;
	}

	return DRM_MODE_CONNECTOR_Unknown;
}

1236
1237
struct drm_connector *
nouveau_connector_create(struct drm_device *dev, int index)
1238
{
1239
	const struct drm_connector_funcs *funcs = &nouveau_connector_funcs;
1240
1241
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_display *disp = nouveau_display(dev);
1242
1243
	struct nouveau_connector *nv_connector = NULL;
	struct drm_connector *connector;
1244
	int type, ret = 0;
1245
	bool dummy;
1246

1247
1248
1249
1250
	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
		nv_connector = nouveau_connector(connector);
		if (nv_connector->index == index)
			return connector;
1251
1252
	}

1253
1254
	nv_connector = kzalloc(sizeof(*nv_connector), GFP_KERNEL);
	if (!nv_connector)
1255
		return ERR_PTR(-ENOMEM);
1256

1257
	connector = &nv_connector->base;
1258
1259
1260
	nv_connector->index = index;

	/* attempt to parse vbios connector type and hotplug gpio */
1261
	nv_connector->dcb = olddcb_conn(dev, index);
1262
1263
	if (nv_connector->dcb) {
		u32 entry = ROM16(nv_connector->dcb[0]);
1264
		if (olddcb_conntab(dev)[3] >= 4)
1265
1266
1267
1268
1269
			entry |= (u32)ROM16(nv_connector->dcb[2]) << 16;

		nv_connector->type = nv_connector->dcb[0];
		if (drm_conntype_from_dcb(nv_connector->type) ==
					  DRM_MODE_CONNECTOR_Unknown) {