drivers/gpu/drm/nouveau/dispnv04/disp.c - linux - Git at Google

 /*
  * 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
  */

 #include <drm/drm_crtc_helper.h>

 #include "nouveau_drv.h"
 #include "nouveau_reg.h"
 #include "hw.h"
 #include "nouveau_encoder.h"
 #include "nouveau_connector.h"
 #include "nouveau_bo.h"
 #include "nouveau_gem.h"
 #include "nouveau_chan.h"

 #include <nvif/if0004.h>

 struct nouveau_connector *
 nv04_encoder_get_connector(struct nouveau_encoder *encoder)
 {
 	struct drm_device *dev = to_drm_encoder(encoder)->dev;
 	struct drm_connector *connector;
 	struct drm_connector_list_iter conn_iter;
 	struct nouveau_connector *nv_connector = NULL;

 	drm_connector_list_iter_begin(dev, &conn_iter);
 	drm_for_each_connector_iter(connector, &conn_iter) {
 		if (connector->encoder == to_drm_encoder(encoder))
 			nv_connector = nouveau_connector(connector);
 	}
 	drm_connector_list_iter_end(&conn_iter);

 	return nv_connector;
 }

 static void
 nv04_display_fini(struct drm_device *dev, bool runtime, bool suspend)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nv04_display *disp = nv04_display(dev);
 	struct drm_crtc *crtc;

 	/* Disable flip completion events. */
 	nvif_event_block(&disp->flip);

 	/* 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);

 	if (!runtime)
 		cancel_work_sync(&drm->hpd_work);

 	if (!suspend)
 		return;

 	/* Un-pin FB and cursors so they'll be evicted to system memory. */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct drm_framebuffer *fb = crtc->primary->fb;
 		struct nouveau_bo *nvbo;

 		if (!fb || !fb->obj[0])
 			continue;
 		nvbo = nouveau_gem_object(fb->obj[0]);
 		nouveau_bo_unpin(nvbo);
 	}

 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 		if (nv_crtc->cursor.nvbo) {
 			if (nv_crtc->cursor.set_offset)
 				nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 			nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 		}
 	}
 }

 static int
 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
 {
 	struct nv04_display *disp = nv04_display(dev);
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_encoder *encoder;
 	struct drm_crtc *crtc;
 	int ret;

 	/* 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(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 		nv_crtc->save(&nv_crtc->base);
 	}

 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 		encoder->enc_save(&encoder->base.base);

 	/* Enable flip completion events. */
 	nvif_event_allow(&disp->flip);

 	if (!resume)
 		return 0;

 	/* Re-pin FB/cursors. */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct drm_framebuffer *fb = crtc->primary->fb;
 		struct nouveau_bo *nvbo;

 		if (!fb || !fb->obj[0])
 			continue;
 		nvbo = nouveau_gem_object(fb->obj[0]);
 		ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, true);
 		if (ret)
 			NV_ERROR(drm, "Could not pin framebuffer\n");
 	}

 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 		if (!nv_crtc->cursor.nvbo)
 			continue;

 		ret = nouveau_bo_pin(nv_crtc->cursor.nvbo,
 				     NOUVEAU_GEM_DOMAIN_VRAM, true);
 		if (!ret && nv_crtc->cursor.set_offset)
 			ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 		if (ret)
 			NV_ERROR(drm, "Could not pin/map cursor.\n");
 	}

 	/* Force CLUT to get re-loaded during modeset. */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

 		nv_crtc->lut.depth = 0;
 	}

 	/* This should ensure we don't hit a locking problem when someone
 	 * wakes us up via a connector.  We should never go into suspend
 	 * while the display is on anyways.
 	 */
 	if (runtime)
 		return 0;

 	/* Restore mode. */
 	drm_helper_resume_force_mode(dev);

 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

 		if (!nv_crtc->cursor.nvbo)
 			continue;

 		if (nv_crtc->cursor.set_offset)
 			nv_crtc->cursor.set_offset(nv_crtc,
 						   nv_crtc->cursor.nvbo->offset);
 		nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 						 nv_crtc->cursor_saved_y);
 	}

 	return 0;
 }

 static void
 nv04_display_destroy(struct drm_device *dev)
 {
 	struct nv04_display *disp = nv04_display(dev);
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_encoder *encoder;
 	struct nouveau_crtc *nv_crtc;

 	/* Restore state */
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 		encoder->enc_restore(&encoder->base.base);

 	list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 		nv_crtc->restore(&nv_crtc->base);

 	nouveau_hw_save_vga_fonts(dev, 0);

 	nvif_event_dtor(&disp->flip);

 	nouveau_display(dev)->priv = NULL;
 	vfree(disp);

 	nvif_object_unmap(&drm->client.device.object);
 }

 int
 nv04_display_create(struct drm_device *dev)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 	struct dcb_table *dcb = &drm->vbios.dcb;
 	struct drm_connector *connector, *ct;
 	struct drm_encoder *encoder;
 	struct nouveau_encoder *nv_encoder;
 	struct nouveau_crtc *crtc;
 	struct nv04_display *disp;
 	int i, ret;

 	disp = vzalloc(sizeof(*disp));
 	if (!disp)
 		return -ENOMEM;

 	disp->drm = drm;

 	nvif_object_map(&drm->client.device.object, NULL, 0);

 	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;

 	/* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 	dev->driver_features &= ~DRIVER_ATOMIC;

 	/* Request page flip completion event. */
 	if (drm->channel) {
 		ret = nvif_event_ctor(&drm->channel->nvsw, "kmsFlip", 0, nv04_flip_complete,
 				      true, NULL, 0, &disp->flip);
 		if (ret)
 			return ret;
 	}

 	nouveau_hw_save_vga_fonts(dev, 1);

 	nv04_crtc_create(dev, 0);
 	if (nv_two_heads(dev))
 		nv04_crtc_create(dev, 1);

 	for (i = 0; i < dcb->entries; i++) {
 		struct dcb_output *dcbent = &dcb->entry[i];

 		connector = nouveau_connector_create(dev, dcbent->connector);
 		if (IS_ERR(connector))
 			continue;

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

 		if (ret)
 			continue;
 	}

 	list_for_each_entry_safe(connector, ct,
 				 &dev->mode_config.connector_list, head) {
 		if (!connector->possible_encoders) {
 			NV_WARN(drm, "%s has no encoders, removing\n",
 				connector->name);
 			connector->funcs->destroy(connector);
 		}
 	}

 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 		struct nvkm_i2c_bus *bus =
 			nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 		nv_encoder->i2c = bus ? &bus->i2c : NULL;
 	}

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

 	list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 		nv_encoder->enc_save(&nv_encoder->base.base);

 	nouveau_overlay_init(dev);

 	return 0;
 }
	/*
	* 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
	*/

	#include <drm/drm_crtc_helper.h>

	#include "nouveau_drv.h"
	#include "nouveau_reg.h"
	#include "hw.h"
	#include "nouveau_encoder.h"
	#include "nouveau_connector.h"
	#include "nouveau_bo.h"
	#include "nouveau_gem.h"
	#include "nouveau_chan.h"

	#include <nvif/if0004.h>

	struct nouveau_connector *
	nv04_encoder_get_connector(struct nouveau_encoder *encoder)
	{
	struct drm_device *dev = to_drm_encoder(encoder)->dev;
	struct drm_connector *connector;
	struct drm_connector_list_iter conn_iter;
	struct nouveau_connector *nv_connector = NULL;

	drm_connector_list_iter_begin(dev, &conn_iter);
	drm_for_each_connector_iter(connector, &conn_iter) {
	if (connector->encoder == to_drm_encoder(encoder))
	nv_connector = nouveau_connector(connector);
	}
	drm_connector_list_iter_end(&conn_iter);

	return nv_connector;
	}

	static void
	nv04_display_fini(struct drm_device *dev, bool runtime, bool suspend)
	{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nv04_display *disp = nv04_display(dev);
	struct drm_crtc *crtc;

	/* Disable flip completion events. */
	nvif_event_block(&disp->flip);

	/* 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);

	if (!runtime)
	cancel_work_sync(&drm->hpd_work);

	if (!suspend)
	return;

	/* Un-pin FB and cursors so they'll be evicted to system memory. */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct drm_framebuffer *fb = crtc->primary->fb;
	struct nouveau_bo *nvbo;

	if (!fb \|\| !fb->obj[0])
	continue;
	nvbo = nouveau_gem_object(fb->obj[0]);
	nouveau_bo_unpin(nvbo);
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	if (nv_crtc->cursor.nvbo) {
	if (nv_crtc->cursor.set_offset)
	nouveau_bo_unmap(nv_crtc->cursor.nvbo);
	nouveau_bo_unpin(nv_crtc->cursor.nvbo);
	}
	}
	}

	static int
	nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
	{
	struct nv04_display *disp = nv04_display(dev);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_encoder *encoder;
	struct drm_crtc *crtc;
	int ret;

	/* 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(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	nv_crtc->save(&nv_crtc->base);
	}

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
	encoder->enc_save(&encoder->base.base);

	/* Enable flip completion events. */
	nvif_event_allow(&disp->flip);

	if (!resume)
	return 0;

	/* Re-pin FB/cursors. */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct drm_framebuffer *fb = crtc->primary->fb;
	struct nouveau_bo *nvbo;

	if (!fb \|\| !fb->obj[0])
	continue;
	nvbo = nouveau_gem_object(fb->obj[0]);
	ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, true);
	if (ret)
	NV_ERROR(drm, "Could not pin framebuffer\n");
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	if (!nv_crtc->cursor.nvbo)
	continue;

	ret = nouveau_bo_pin(nv_crtc->cursor.nvbo,
	NOUVEAU_GEM_DOMAIN_VRAM, true);
	if (!ret && nv_crtc->cursor.set_offset)
	ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
	if (ret)
	NV_ERROR(drm, "Could not pin/map cursor.\n");
	}

	/* Force CLUT to get re-loaded during modeset. */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

	nv_crtc->lut.depth = 0;
	}

	/* This should ensure we don't hit a locking problem when someone
	* wakes us up via a connector. We should never go into suspend
	* while the display is on anyways.
	*/
	if (runtime)
	return 0;

	/* Restore mode. */
	drm_helper_resume_force_mode(dev);

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

	if (!nv_crtc->cursor.nvbo)
	continue;

	if (nv_crtc->cursor.set_offset)
	nv_crtc->cursor.set_offset(nv_crtc,
	nv_crtc->cursor.nvbo->offset);
	nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
	nv_crtc->cursor_saved_y);
	}

	return 0;
	}

	static void
	nv04_display_destroy(struct drm_device *dev)
	{
	struct nv04_display *disp = nv04_display(dev);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_encoder *encoder;
	struct nouveau_crtc *nv_crtc;

	/* Restore state */
	list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
	encoder->enc_restore(&encoder->base.base);

	list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
	nv_crtc->restore(&nv_crtc->base);

	nouveau_hw_save_vga_fonts(dev, 0);

	nvif_event_dtor(&disp->flip);

	nouveau_display(dev)->priv = NULL;
	vfree(disp);

	nvif_object_unmap(&drm->client.device.object);
	}

	int
	nv04_display_create(struct drm_device *dev)
	{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
	struct dcb_table *dcb = &drm->vbios.dcb;
	struct drm_connector connector, ct;
	struct drm_encoder *encoder;
	struct nouveau_encoder *nv_encoder;
	struct nouveau_crtc *crtc;
	struct nv04_display *disp;
	int i, ret;

	disp = vzalloc(sizeof(*disp));
	if (!disp)
	return -ENOMEM;

	disp->drm = drm;

	nvif_object_map(&drm->client.device.object, NULL, 0);

	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;

	/* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
	dev->driver_features &= ~DRIVER_ATOMIC;

	/* Request page flip completion event. */
	if (drm->channel) {
	ret = nvif_event_ctor(&drm->channel->nvsw, "kmsFlip", 0, nv04_flip_complete,
	true, NULL, 0, &disp->flip);
	if (ret)
	return ret;
	}

	nouveau_hw_save_vga_fonts(dev, 1);

	nv04_crtc_create(dev, 0);
	if (nv_two_heads(dev))
	nv04_crtc_create(dev, 1);

	for (i = 0; i < dcb->entries; i++) {
	struct dcb_output *dcbent = &dcb->entry[i];

	connector = nouveau_connector_create(dev, dcbent->connector);
	if (IS_ERR(connector))
	continue;

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

	if (ret)
	continue;
	}

	list_for_each_entry_safe(connector, ct,
	&dev->mode_config.connector_list, head) {
	if (!connector->possible_encoders) {
	NV_WARN(drm, "%s has no encoders, removing\n",
	connector->name);
	connector->funcs->destroy(connector);
	}
	}

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct nvkm_i2c_bus *bus =
	nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
	nv_encoder->i2c = bus ? &bus->i2c : NULL;
	}

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

	list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
	nv_encoder->enc_save(&nv_encoder->base.base);

	nouveau_overlay_init(dev);

	return 0;
	}