drivers/gpu/drm/nouveau/nv04_display.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 "drmP.h"
 #include "drm.h"
 #include "drm_crtc_helper.h"

 #include "nouveau_drv.h"
 #include "nouveau_fb.h"
 #include "nouveau_hw.h"
 #include "nouveau_encoder.h"
 #include "nouveau_connector.h"

 static void nv04_vblank_crtc0_isr(struct drm_device *);
 static void nv04_vblank_crtc1_isr(struct drm_device *);

 static void
 nv04_display_store_initial_head_owner(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;

 	if (dev_priv->chipset != 0x11) {
 		dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
 		return;
 	}

 	/* reading CR44 is broken on nv11, so we attempt to infer it */
 	if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28))	/* heads tied, restore both */
 		dev_priv->crtc_owner = 0x4;
 	else {
 		uint8_t slaved_on_A, slaved_on_B;
 		bool tvA = false;
 		bool tvB = false;

 		slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
 									0x80;
 		if (slaved_on_B)
 			tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
 					MASK(NV_CIO_CRE_LCD_LCD_SELECT));

 		slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
 									0x80;
 		if (slaved_on_A)
 			tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
 					MASK(NV_CIO_CRE_LCD_LCD_SELECT));

 		if (slaved_on_A && !tvA)
 			dev_priv->crtc_owner = 0x0;
 		else if (slaved_on_B && !tvB)
 			dev_priv->crtc_owner = 0x3;
 		else if (slaved_on_A)
 			dev_priv->crtc_owner = 0x0;
 		else if (slaved_on_B)
 			dev_priv->crtc_owner = 0x3;
 		else
 			dev_priv->crtc_owner = 0x0;
 	}
 }

 int
 nv04_display_early_init(struct drm_device *dev)
 {
 	/* Make the I2C buses accessible. */
 	if (!nv_gf4_disp_arch(dev)) {
 		uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);

 		if (!(pmc_enable & 1))
 			nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable | 1);
 	}

 	/* Unlock the VGA CRTCs. */
 	NVLockVgaCrtcs(dev, false);

 	/* Make sure the CRTCs aren't in slaved mode. */
 	if (nv_two_heads(dev)) {
 		nv04_display_store_initial_head_owner(dev);
 		NVSetOwner(dev, 0);
 	}

 	/* ensure vblank interrupts are off, they can't be enabled until
 	 * drm_vblank has been initialised
 	 */
 	NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
 	if (nv_two_heads(dev))
 		NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);

 	return 0;
 }

 void
 nv04_display_late_takedown(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;

 	if (nv_two_heads(dev))
 		NVSetOwner(dev, dev_priv->crtc_owner);

 	NVLockVgaCrtcs(dev, true);
 }

 int
 nv04_display_create(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct dcb_table *dcb = &dev_priv->vbios.dcb;
 	struct drm_connector *connector, *ct;
 	struct drm_encoder *encoder;
 	struct drm_crtc *crtc;
 	int i, ret;

 	NV_DEBUG_KMS(dev, "\n");

 	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_entry *dcbent = &dcb->entry[i];

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

 		switch (dcbent->type) {
 		case OUTPUT_ANALOG:
 			ret = nv04_dac_create(connector, dcbent);
 			break;
 		case OUTPUT_LVDS:
 		case OUTPUT_TMDS:
 			ret = nv04_dfp_create(connector, dcbent);
 			break;
 		case 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(dev, "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->encoder_ids[0]) {
 			NV_WARN(dev, "%s has no encoders, removing\n",
 				drm_get_connector_name(connector));
 			connector->funcs->destroy(connector);
 		}
 	}

 	/* 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);
 	}

 	nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
 	nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
 	return 0;
 }

 void
 nv04_display_destroy(struct drm_device *dev)
 {
 	struct drm_encoder *encoder;
 	struct drm_crtc *crtc;

 	NV_DEBUG_KMS(dev, "\n");

 	nouveau_irq_unregister(dev, 24);
 	nouveau_irq_unregister(dev, 25);

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

 		crtc->funcs->set_config(&modeset);
 	}

 	/* 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);

 	nouveau_hw_save_vga_fonts(dev, 0);
 }

 int
 nv04_display_init(struct drm_device *dev)
 {
 	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);

 	return 0;
 }

 void
 nv04_display_fini(struct drm_device *dev)
 {
 	/* 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);
 }

 static void
 nv04_vblank_crtc0_isr(struct drm_device *dev)
 {
 	nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
 	drm_handle_vblank(dev, 0);
 }

 static void
 nv04_vblank_crtc1_isr(struct drm_device *dev)
 {
 	nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
 	drm_handle_vblank(dev, 1);
 }
	/*
	* 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 "drmP.h"
	#include "drm.h"
	#include "drm_crtc_helper.h"

	#include "nouveau_drv.h"
	#include "nouveau_fb.h"
	#include "nouveau_hw.h"
	#include "nouveau_encoder.h"
	#include "nouveau_connector.h"

	static void nv04_vblank_crtc0_isr(struct drm_device *);
	static void nv04_vblank_crtc1_isr(struct drm_device *);

	static void
	nv04_display_store_initial_head_owner(struct drm_device *dev)
	{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (dev_priv->chipset != 0x11) {
	dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
	return;
	}

	/* reading CR44 is broken on nv11, so we attempt to infer it */
	if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28)) /* heads tied, restore both */
	dev_priv->crtc_owner = 0x4;
	else {
	uint8_t slaved_on_A, slaved_on_B;
	bool tvA = false;
	bool tvB = false;

	slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
	0x80;
	if (slaved_on_B)
	tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
	MASK(NV_CIO_CRE_LCD_LCD_SELECT));

	slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
	0x80;
	if (slaved_on_A)
	tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
	MASK(NV_CIO_CRE_LCD_LCD_SELECT));

	if (slaved_on_A && !tvA)
	dev_priv->crtc_owner = 0x0;
	else if (slaved_on_B && !tvB)
	dev_priv->crtc_owner = 0x3;
	else if (slaved_on_A)
	dev_priv->crtc_owner = 0x0;
	else if (slaved_on_B)
	dev_priv->crtc_owner = 0x3;
	else
	dev_priv->crtc_owner = 0x0;
	}
	}

	int
	nv04_display_early_init(struct drm_device *dev)
	{
	/* Make the I2C buses accessible. */
	if (!nv_gf4_disp_arch(dev)) {
	uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);

	if (!(pmc_enable & 1))
	nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable \| 1);
	}

	/* Unlock the VGA CRTCs. */
	NVLockVgaCrtcs(dev, false);

	/* Make sure the CRTCs aren't in slaved mode. */
	if (nv_two_heads(dev)) {
	nv04_display_store_initial_head_owner(dev);
	NVSetOwner(dev, 0);
	}

	/* ensure vblank interrupts are off, they can't be enabled until
	* drm_vblank has been initialised
	*/
	NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
	if (nv_two_heads(dev))
	NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);

	return 0;
	}

	void
	nv04_display_late_takedown(struct drm_device *dev)
	{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (nv_two_heads(dev))
	NVSetOwner(dev, dev_priv->crtc_owner);

	NVLockVgaCrtcs(dev, true);
	}

	int
	nv04_display_create(struct drm_device *dev)
	{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct dcb_table *dcb = &dev_priv->vbios.dcb;
	struct drm_connector connector, ct;
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;
	int i, ret;

	NV_DEBUG_KMS(dev, "\n");

	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_entry *dcbent = &dcb->entry[i];

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

	switch (dcbent->type) {
	case OUTPUT_ANALOG:
	ret = nv04_dac_create(connector, dcbent);
	break;
	case OUTPUT_LVDS:
	case OUTPUT_TMDS:
	ret = nv04_dfp_create(connector, dcbent);
	break;
	case 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(dev, "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->encoder_ids[0]) {
	NV_WARN(dev, "%s has no encoders, removing\n",
	drm_get_connector_name(connector));
	connector->funcs->destroy(connector);
	}
	}

	/* 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);
	}

	nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
	nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
	return 0;
	}

	void
	nv04_display_destroy(struct drm_device *dev)
	{
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	NV_DEBUG_KMS(dev, "\n");

	nouveau_irq_unregister(dev, 24);
	nouveau_irq_unregister(dev, 25);

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

	crtc->funcs->set_config(&modeset);
	}

	/* 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);

	nouveau_hw_save_vga_fonts(dev, 0);
	}

	int
	nv04_display_init(struct drm_device *dev)
	{
	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);

	return 0;
	}

	void
	nv04_display_fini(struct drm_device *dev)
	{
	/* 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);
	}

	static void
	nv04_vblank_crtc0_isr(struct drm_device *dev)
	{
	nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
	drm_handle_vblank(dev, 0);
	}

	static void
	nv04_vblank_crtc1_isr(struct drm_device *dev)
	{
	nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
	drm_handle_vblank(dev, 1);
	}