disp.c 5.2 KB
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/*
 * Copyright 2009 Red Hat Inc.
 *
 * 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 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 HOLDER(S) OR AUTHOR(S) 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.
 *
 * Author: Ben Skeggs
 */

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#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
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#include "nouveau_drm.h"
#include "nouveau_reg.h"
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#include "hw.h"
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#include "nouveau_encoder.h"
#include "nouveau_connector.h"

int
nv04_display_create(struct drm_device *dev)
{
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	struct nouveau_drm *drm = nouveau_drm(dev);
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	struct nouveau_i2c *i2c = nvxx_i2c(&drm->device);
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	struct dcb_table *dcb = &drm->vbios.dcb;
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	struct drm_connector *connector, *ct;
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	struct drm_encoder *encoder;
	struct drm_crtc *crtc;
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	struct nv04_display *disp;
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	int i, ret;

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	disp = kzalloc(sizeof(*disp), GFP_KERNEL);
	if (!disp)
		return -ENOMEM;

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	nvif_object_map(nvif_object(&drm->device));

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	nouveau_display(dev)->priv = disp;
	nouveau_display(dev)->dtor = nv04_display_destroy;
	nouveau_display(dev)->init = nv04_display_init;
	nouveau_display(dev)->fini = nv04_display_fini;
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	nouveau_hw_save_vga_fonts(dev, 1);
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	nv04_crtc_create(dev, 0);
	if (nv_two_heads(dev))
		nv04_crtc_create(dev, 1);

	for (i = 0; i < dcb->entries; i++) {
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		struct dcb_output *dcbent = &dcb->entry[i];
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		connector = nouveau_connector_create(dev, dcbent->connector);
		if (IS_ERR(connector))
			continue;

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		switch (dcbent->type) {
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		case DCB_OUTPUT_ANALOG:
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			ret = nv04_dac_create(connector, dcbent);
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			break;
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		case DCB_OUTPUT_LVDS:
		case DCB_OUTPUT_TMDS:
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			ret = nv04_dfp_create(connector, dcbent);
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			break;
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		case DCB_OUTPUT_TV:
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			if (dcbent->location == DCB_LOC_ON_CHIP)
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				ret = nv17_tv_create(connector, dcbent);
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			else
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				ret = nv04_tv_create(connector, dcbent);
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			break;
		default:
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			NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
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			continue;
		}

		if (ret)
			continue;
	}

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	list_for_each_entry_safe(connector, ct,
				 &dev->mode_config.connector_list, head) {
		if (!connector->encoder_ids[0]) {
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			NV_WARN(drm, "%s has no encoders, removing\n",
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				connector->name);
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			connector->funcs->destroy(connector);
		}
	}
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	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
		nv_encoder->i2c = i2c->find(i2c, nv_encoder->dcb->i2c_index);
	}

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	/* Save previous state */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->save(crtc);

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->save(encoder);
	}

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	nouveau_overlay_init(dev);

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	return 0;
}

void
nv04_display_destroy(struct drm_device *dev)
{
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	struct nv04_display *disp = nv04_display(dev);
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	struct nouveau_drm *drm = nouveau_drm(dev);
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	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	/* Turn every CRTC off. */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		struct drm_mode_set modeset = {
			.crtc = crtc,
		};

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		drm_mode_set_config_internal(&modeset);
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	}

	/* Restore state */
	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->restore(encoder);
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->restore(crtc);

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	nouveau_hw_save_vga_fonts(dev, 0);
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	nouveau_display(dev)->priv = NULL;
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	kfree(disp);
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	nvif_object_unmap(nvif_object(&drm->device));
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}

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int
nv04_display_init(struct drm_device *dev)
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{
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	/* meh.. modeset apparently doesn't setup all the regs and depends
	 * on pre-existing state, for now load the state of the card *before*
	 * nouveau was loaded, and then do a modeset.
	 *
	 * best thing to do probably is to make save/restore routines not
	 * save/restore "pre-load" state, but more general so we can save
	 * on suspend too.
	 */
	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->restore(encoder);
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->restore(crtc);
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	return 0;
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}

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void
nv04_display_fini(struct drm_device *dev)
{
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	/* disable vblank interrupts */
	NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
	if (nv_two_heads(dev))
		NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
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}