Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 838 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
new file mode 100644
index 000000000..a2f5df568
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -0,0 +1,838 @@
+/*
+ * 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.
+ *
+ */
+
+#include <acpi/video.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "nouveau_fbcon.h"
+#include "nouveau_crtc.h"
+#include "nouveau_gem.h"
+#include "nouveau_connector.h"
+#include "nv50_display.h"
+
+#include <nvif/class.h>
+#include <nvif/cl0046.h>
+#include <nvif/event.h>
+#include <dispnv50/crc.h>
+
+int
+nouveau_display_vblank_enable(struct drm_crtc *crtc)
+{
+	struct nouveau_crtc *nv_crtc;
+
+	nv_crtc = nouveau_crtc(crtc);
+	nvif_notify_get(&nv_crtc->vblank);
+
+	return 0;
+}
+
+void
+nouveau_display_vblank_disable(struct drm_crtc *crtc)
+{
+	struct nouveau_crtc *nv_crtc;
+
+	nv_crtc = nouveau_crtc(crtc);
+	nvif_notify_put(&nv_crtc->vblank);
+}
+
+static inline int
+calc(int blanks, int blanke, int total, int line)
+{
+	if (blanke >= blanks) {
+		if (line >= blanks)
+			line -= total;
+	} else {
+		if (line >= blanks)
+			line -= total;
+		line -= blanke + 1;
+	}
+	return line;
+}
+
+static bool
+nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
+				ktime_t *stime, ktime_t *etime)
+{
+	struct {
+		struct nv04_disp_mthd_v0 base;
+		struct nv04_disp_scanoutpos_v0 scan;
+	} args = {
+		.base.method = NV04_DISP_SCANOUTPOS,
+		.base.head = nouveau_crtc(crtc)->index,
+	};
+	struct nouveau_display *disp = nouveau_display(crtc->dev);
+	struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
+	int retry = 20;
+	bool ret = false;
+
+	do {
+		ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args));
+		if (ret != 0)
+			return false;
+
+		if (args.scan.vline) {
+			ret = true;
+			break;
+		}
+
+		if (retry) ndelay(vblank->linedur_ns);
+	} while (retry--);
+
+	*hpos = args.scan.hline;
+	*vpos = calc(args.scan.vblanks, args.scan.vblanke,
+		     args.scan.vtotal, args.scan.vline);
+	if (stime) *stime = ns_to_ktime(args.scan.time[0]);
+	if (etime) *etime = ns_to_ktime(args.scan.time[1]);
+
+	return ret;
+}
+
+bool
+nouveau_display_scanoutpos(struct drm_crtc *crtc,
+			   bool in_vblank_irq, int *vpos, int *hpos,
+			   ktime_t *stime, ktime_t *etime,
+			   const struct drm_display_mode *mode)
+{
+	return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
+					       stime, etime);
+}
+
+static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
+	.destroy = drm_gem_fb_destroy,
+	.create_handle = drm_gem_fb_create_handle,
+};
+
+static void
+nouveau_decode_mod(struct nouveau_drm *drm,
+		   uint64_t modifier,
+		   uint32_t *tile_mode,
+		   uint8_t *kind)
+{
+	struct nouveau_display *disp = nouveau_display(drm->dev);
+	BUG_ON(!tile_mode || !kind);
+
+	if (modifier == DRM_FORMAT_MOD_LINEAR) {
+		/* tile_mode will not be used in this case */
+		*tile_mode = 0;
+		*kind = 0;
+	} else {
+		/*
+		 * Extract the block height and kind from the corresponding
+		 * modifier fields.  See drm_fourcc.h for details.
+		 */
+
+		if ((modifier & (0xffull << 12)) == 0ull) {
+			/* Legacy modifier.  Translate to this dev's 'kind.' */
+			modifier |= disp->format_modifiers[0] & (0xffull << 12);
+		}
+
+		*tile_mode = (uint32_t)(modifier & 0xF);
+		*kind = (uint8_t)((modifier >> 12) & 0xFF);
+
+		if (drm->client.device.info.chipset >= 0xc0)
+			*tile_mode <<= 4;
+	}
+}
+
+void
+nouveau_framebuffer_get_layout(struct drm_framebuffer *fb,
+			       uint32_t *tile_mode,
+			       uint8_t *kind)
+{
+	if (fb->flags & DRM_MODE_FB_MODIFIERS) {
+		struct nouveau_drm *drm = nouveau_drm(fb->dev);
+
+		nouveau_decode_mod(drm, fb->modifier, tile_mode, kind);
+	} else {
+		const struct nouveau_bo *nvbo = nouveau_gem_object(fb->obj[0]);
+
+		*tile_mode = nvbo->mode;
+		*kind = nvbo->kind;
+	}
+}
+
+static const u64 legacy_modifiers[] = {
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0),
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1),
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2),
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3),
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4),
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5),
+	DRM_FORMAT_MOD_INVALID
+};
+
+static int
+nouveau_validate_decode_mod(struct nouveau_drm *drm,
+			    uint64_t modifier,
+			    uint32_t *tile_mode,
+			    uint8_t *kind)
+{
+	struct nouveau_display *disp = nouveau_display(drm->dev);
+	int mod;
+
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
+		return -EINVAL;
+	}
+
+	BUG_ON(!disp->format_modifiers);
+
+	for (mod = 0;
+	     (disp->format_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
+	     (disp->format_modifiers[mod] != modifier);
+	     mod++);
+
+	if (disp->format_modifiers[mod] == DRM_FORMAT_MOD_INVALID) {
+		for (mod = 0;
+		     (legacy_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
+		     (legacy_modifiers[mod] != modifier);
+		     mod++);
+		if (legacy_modifiers[mod] == DRM_FORMAT_MOD_INVALID)
+			return -EINVAL;
+	}
+
+	nouveau_decode_mod(drm, modifier, tile_mode, kind);
+
+	return 0;
+}
+
+static inline uint32_t
+nouveau_get_width_in_blocks(uint32_t stride)
+{
+	/* GOBs per block in the x direction is always one, and GOBs are
+	 * 64 bytes wide
+	 */
+	static const uint32_t log_block_width = 6;
+
+	return (stride + (1 << log_block_width) - 1) >> log_block_width;
+}
+
+static inline uint32_t
+nouveau_get_height_in_blocks(struct nouveau_drm *drm,
+			     uint32_t height,
+			     uint32_t log_block_height_in_gobs)
+{
+	uint32_t log_gob_height;
+	uint32_t log_block_height;
+
+	BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
+
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
+		log_gob_height = 2;
+	else
+		log_gob_height = 3;
+
+	log_block_height = log_block_height_in_gobs + log_gob_height;
+
+	return (height + (1 << log_block_height) - 1) >> log_block_height;
+}
+
+static int
+nouveau_check_bl_size(struct nouveau_drm *drm, struct nouveau_bo *nvbo,
+		      uint32_t offset, uint32_t stride, uint32_t h,
+		      uint32_t tile_mode)
+{
+	uint32_t gob_size, bw, bh;
+	uint64_t bl_size;
+
+	BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
+
+	if (drm->client.device.info.chipset >= 0xc0) {
+		if (tile_mode & 0xF)
+			return -EINVAL;
+		tile_mode >>= 4;
+	}
+
+	if (tile_mode & 0xFFFFFFF0)
+		return -EINVAL;
+
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
+		gob_size = 256;
+	else
+		gob_size = 512;
+
+	bw = nouveau_get_width_in_blocks(stride);
+	bh = nouveau_get_height_in_blocks(drm, h, tile_mode);
+
+	bl_size = bw * bh * (1 << tile_mode) * gob_size;
+
+	DRM_DEBUG_KMS("offset=%u stride=%u h=%u tile_mode=0x%02x bw=%u bh=%u gob_size=%u bl_size=%llu size=%zu\n",
+		      offset, stride, h, tile_mode, bw, bh, gob_size, bl_size,
+		      nvbo->bo.base.size);
+
+	if (bl_size + offset > nvbo->bo.base.size)
+		return -ERANGE;
+
+	return 0;
+}
+
+int
+nouveau_framebuffer_new(struct drm_device *dev,
+			const struct drm_mode_fb_cmd2 *mode_cmd,
+			struct drm_gem_object *gem,
+			struct drm_framebuffer **pfb)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
+	struct drm_framebuffer *fb;
+	const struct drm_format_info *info;
+	unsigned int height, i;
+	uint32_t tile_mode;
+	uint8_t kind;
+	int ret;
+
+        /* YUV overlays have special requirements pre-NV50 */
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
+
+	    (mode_cmd->pixel_format == DRM_FORMAT_YUYV ||
+	     mode_cmd->pixel_format == DRM_FORMAT_UYVY ||
+	     mode_cmd->pixel_format == DRM_FORMAT_NV12 ||
+	     mode_cmd->pixel_format == DRM_FORMAT_NV21) &&
+	    (mode_cmd->pitches[0] & 0x3f || /* align 64 */
+	     mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
+	     (mode_cmd->pitches[1] && /* pitches for planes must match */
+	      mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
+		DRM_DEBUG_KMS("Unsuitable framebuffer: format: %p4cc; pitches: 0x%x\n 0x%x\n",
+			      &mode_cmd->pixel_format,
+			      mode_cmd->pitches[0], mode_cmd->pitches[1]);
+		return -EINVAL;
+	}
+
+	if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
+		if (nouveau_validate_decode_mod(drm, mode_cmd->modifier[0],
+						&tile_mode, &kind)) {
+			DRM_DEBUG_KMS("Unsupported modifier: 0x%llx\n",
+				      mode_cmd->modifier[0]);
+			return -EINVAL;
+		}
+	} else {
+		tile_mode = nvbo->mode;
+		kind = nvbo->kind;
+	}
+
+	info = drm_get_format_info(dev, mode_cmd);
+
+	for (i = 0; i < info->num_planes; i++) {
+		height = drm_format_info_plane_height(info,
+						      mode_cmd->height,
+						      i);
+
+		if (kind) {
+			ret = nouveau_check_bl_size(drm, nvbo,
+						    mode_cmd->offsets[i],
+						    mode_cmd->pitches[i],
+						    height, tile_mode);
+			if (ret)
+				return ret;
+		} else {
+			uint32_t size = mode_cmd->pitches[i] * height;
+
+			if (size + mode_cmd->offsets[i] > nvbo->bo.base.size)
+				return -ERANGE;
+		}
+	}
+
+	if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
+		return -ENOMEM;
+
+	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
+	fb->obj[0] = gem;
+
+	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
+	if (ret)
+		kfree(fb);
+	return ret;
+}
+
+struct drm_framebuffer *
+nouveau_user_framebuffer_create(struct drm_device *dev,
+				struct drm_file *file_priv,
+				const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct drm_framebuffer *fb;
+	struct drm_gem_object *gem;
+	int ret;
+
+	gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
+	if (!gem)
+		return ERR_PTR(-ENOENT);
+
+	ret = nouveau_framebuffer_new(dev, mode_cmd, gem, &fb);
+	if (ret == 0)
+		return fb;
+
+	drm_gem_object_put(gem);
+	return ERR_PTR(ret);
+}
+
+static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
+	.fb_create = nouveau_user_framebuffer_create,
+	.output_poll_changed = nouveau_fbcon_output_poll_changed,
+};
+
+
+struct nouveau_drm_prop_enum_list {
+	u8 gen_mask;
+	int type;
+	char *name;
+};
+
+static struct nouveau_drm_prop_enum_list underscan[] = {
+	{ 6, UNDERSCAN_AUTO, "auto" },
+	{ 6, UNDERSCAN_OFF, "off" },
+	{ 6, UNDERSCAN_ON, "on" },
+	{}
+};
+
+static struct nouveau_drm_prop_enum_list dither_mode[] = {
+	{ 7, DITHERING_MODE_AUTO, "auto" },
+	{ 7, DITHERING_MODE_OFF, "off" },
+	{ 1, DITHERING_MODE_ON, "on" },
+	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
+	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
+	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
+	{}
+};
+
+static struct nouveau_drm_prop_enum_list dither_depth[] = {
+	{ 6, DITHERING_DEPTH_AUTO, "auto" },
+	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
+	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
+	{}
+};
+
+#define PROP_ENUM(p,gen,n,list) do {                                           \
+	struct nouveau_drm_prop_enum_list *l = (list);                         \
+	int c = 0;                                                             \
+	while (l->gen_mask) {                                                  \
+		if (l->gen_mask & (1 << (gen)))                                \
+			c++;                                                   \
+		l++;                                                           \
+	}                                                                      \
+	if (c) {                                                               \
+		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
+		l = (list);                                                    \
+		while (p && l->gen_mask) {                                     \
+			if (l->gen_mask & (1 << (gen))) {                      \
+				drm_property_add_enum(p, l->type, l->name);    \
+			}                                                      \
+			l++;                                                   \
+		}                                                              \
+	}                                                                      \
+} while(0)
+
+void
+nouveau_display_hpd_resume(struct drm_device *dev)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+
+	mutex_lock(&drm->hpd_lock);
+	drm->hpd_pending = ~0;
+	mutex_unlock(&drm->hpd_lock);
+
+	schedule_work(&drm->hpd_work);
+}
+
+static void
+nouveau_display_hpd_work(struct work_struct *work)
+{
+	struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work);
+	struct drm_device *dev = drm->dev;
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	u32 pending;
+	bool changed = false;
+
+	pm_runtime_get_sync(dev->dev);
+
+	mutex_lock(&drm->hpd_lock);
+	pending = drm->hpd_pending;
+	drm->hpd_pending = 0;
+	mutex_unlock(&drm->hpd_lock);
+
+	/* Nothing to do, exit early without updating the last busy counter */
+	if (!pending)
+		goto noop;
+
+	mutex_lock(&dev->mode_config.mutex);
+	drm_connector_list_iter_begin(dev, &conn_iter);
+
+	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
+		enum drm_connector_status old_status = connector->status;
+		u64 old_epoch_counter = connector->epoch_counter;
+
+		if (!(pending & drm_connector_mask(connector)))
+			continue;
+
+		connector->status = drm_helper_probe_detect(connector, NULL,
+							    false);
+		if (old_epoch_counter == connector->epoch_counter)
+			continue;
+
+		changed = true;
+		drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s (epoch counter %llu->%llu)\n",
+			    connector->base.id, connector->name,
+			    drm_get_connector_status_name(old_status),
+			    drm_get_connector_status_name(connector->status),
+			    old_epoch_counter, connector->epoch_counter);
+	}
+
+	drm_connector_list_iter_end(&conn_iter);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	if (changed)
+		drm_kms_helper_hotplug_event(dev);
+
+	pm_runtime_mark_last_busy(drm->dev->dev);
+noop:
+	pm_runtime_put_autosuspend(dev->dev);
+}
+
+#ifdef CONFIG_ACPI
+
+static int
+nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
+			  void *data)
+{
+	struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb);
+	struct acpi_bus_event *info = data;
+	int ret;
+
+	if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) {
+		if (info->type == ACPI_VIDEO_NOTIFY_PROBE) {
+			ret = pm_runtime_get(drm->dev->dev);
+			if (ret == 1 || ret == -EACCES) {
+				/* If the GPU is already awake, or in a state
+				 * where we can't wake it up, it can handle
+				 * it's own hotplug events.
+				 */
+				pm_runtime_put_autosuspend(drm->dev->dev);
+			} else if (ret == 0 || ret == -EINPROGRESS) {
+				/* We've started resuming the GPU already, so
+				 * it will handle scheduling a full reprobe
+				 * itself
+				 */
+				NV_DEBUG(drm, "ACPI requested connector reprobe\n");
+				pm_runtime_put_noidle(drm->dev->dev);
+			} else {
+				NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n",
+					ret);
+			}
+
+			/* acpi-video should not generate keypresses for this */
+			return NOTIFY_BAD;
+		}
+	}
+
+	return NOTIFY_DONE;
+}
+#endif
+
+int
+nouveau_display_init(struct drm_device *dev, bool resume, bool runtime)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	int ret;
+
+	/*
+	 * Enable hotplug interrupts (done as early as possible, since we need
+	 * them for MST)
+	 */
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
+		struct nouveau_connector *conn = nouveau_connector(connector);
+		nvif_notify_get(&conn->hpd);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	ret = disp->init(dev, resume, runtime);
+	if (ret)
+		return ret;
+
+	/* enable connector detection and polling for connectors without HPD
+	 * support
+	 */
+	drm_kms_helper_poll_enable(dev);
+
+	return ret;
+}
+
+void
+nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	if (!suspend) {
+		if (drm_drv_uses_atomic_modeset(dev))
+			drm_atomic_helper_shutdown(dev);
+		else
+			drm_helper_force_disable_all(dev);
+	}
+
+	/* disable hotplug interrupts */
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
+		struct nouveau_connector *conn = nouveau_connector(connector);
+		nvif_notify_put(&conn->hpd);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	if (!runtime)
+		cancel_work_sync(&drm->hpd_work);
+
+	drm_kms_helper_poll_disable(dev);
+	disp->fini(dev, runtime, suspend);
+}
+
+static void
+nouveau_display_create_properties(struct drm_device *dev)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+	int gen;
+
+	if (disp->disp.object.oclass < NV50_DISP)
+		gen = 0;
+	else
+	if (disp->disp.object.oclass < GF110_DISP)
+		gen = 1;
+	else
+		gen = 2;
+
+	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
+	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
+	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
+
+	disp->underscan_hborder_property =
+		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
+
+	disp->underscan_vborder_property =
+		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
+
+	if (gen < 1)
+		return;
+
+	/* -90..+90 */
+	disp->vibrant_hue_property =
+		drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
+
+	/* -100..+100 */
+	disp->color_vibrance_property =
+		drm_property_create_range(dev, 0, "color vibrance", 0, 200);
+}
+
+int
+nouveau_display_create(struct drm_device *dev)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nvkm_device *device = nvxx_device(&drm->client.device);
+	struct nouveau_display *disp;
+	int ret;
+
+	disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
+	if (!disp)
+		return -ENOMEM;
+
+	drm_mode_config_init(dev);
+	drm_mode_create_scaling_mode_property(dev);
+	drm_mode_create_dvi_i_properties(dev);
+
+	dev->mode_config.funcs = &nouveau_mode_config_funcs;
+	dev->mode_config.fb_base = device->func->resource_addr(device, 1);
+
+	dev->mode_config.min_width = 0;
+	dev->mode_config.min_height = 0;
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
+		dev->mode_config.max_width = 2048;
+		dev->mode_config.max_height = 2048;
+	} else
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
+		dev->mode_config.max_width = 4096;
+		dev->mode_config.max_height = 4096;
+	} else
+	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) {
+		dev->mode_config.max_width = 8192;
+		dev->mode_config.max_height = 8192;
+	} else {
+		dev->mode_config.max_width = 16384;
+		dev->mode_config.max_height = 16384;
+	}
+
+	dev->mode_config.preferred_depth = 24;
+	dev->mode_config.prefer_shadow = 1;
+
+	if (drm->client.device.info.chipset < 0x11)
+		dev->mode_config.async_page_flip = false;
+	else
+		dev->mode_config.async_page_flip = true;
+
+	drm_kms_helper_poll_init(dev);
+	drm_kms_helper_poll_disable(dev);
+
+	if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
+		ret = nvif_disp_ctor(&drm->client.device, "kmsDisp", 0,
+				     &disp->disp);
+		if (ret == 0) {
+			nouveau_display_create_properties(dev);
+			if (disp->disp.object.oclass < NV50_DISP) {
+				dev->mode_config.fb_modifiers_not_supported = true;
+				ret = nv04_display_create(dev);
+			} else {
+				ret = nv50_display_create(dev);
+			}
+		}
+	} else {
+		ret = 0;
+	}
+
+	if (ret)
+		goto disp_create_err;
+
+	drm_mode_config_reset(dev);
+
+	if (dev->mode_config.num_crtc) {
+		ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
+		if (ret)
+			goto vblank_err;
+
+		if (disp->disp.object.oclass >= NV50_DISP)
+			nv50_crc_init(dev);
+	}
+
+	INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work);
+	mutex_init(&drm->hpd_lock);
+#ifdef CONFIG_ACPI
+	drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy;
+	register_acpi_notifier(&drm->acpi_nb);
+#endif
+
+	return 0;
+
+vblank_err:
+	disp->dtor(dev);
+disp_create_err:
+	drm_kms_helper_poll_fini(dev);
+	drm_mode_config_cleanup(dev);
+	return ret;
+}
+
+void
+nouveau_display_destroy(struct drm_device *dev)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+	struct nouveau_drm *drm = nouveau_drm(dev);
+
+#ifdef CONFIG_ACPI
+	unregister_acpi_notifier(&drm->acpi_nb);
+#endif
+
+	drm_kms_helper_poll_fini(dev);
+	drm_mode_config_cleanup(dev);
+
+	if (disp->dtor)
+		disp->dtor(dev);
+
+	nvif_disp_dtor(&disp->disp);
+
+	nouveau_drm(dev)->display = NULL;
+	mutex_destroy(&drm->hpd_lock);
+	kfree(disp);
+}
+
+int
+nouveau_display_suspend(struct drm_device *dev, bool runtime)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+
+	if (drm_drv_uses_atomic_modeset(dev)) {
+		if (!runtime) {
+			disp->suspend = drm_atomic_helper_suspend(dev);
+			if (IS_ERR(disp->suspend)) {
+				int ret = PTR_ERR(disp->suspend);
+				disp->suspend = NULL;
+				return ret;
+			}
+		}
+	}
+
+	nouveau_display_fini(dev, true, runtime);
+	return 0;
+}
+
+void
+nouveau_display_resume(struct drm_device *dev, bool runtime)
+{
+	struct nouveau_display *disp = nouveau_display(dev);
+
+	nouveau_display_init(dev, true, runtime);
+
+	if (drm_drv_uses_atomic_modeset(dev)) {
+		if (disp->suspend) {
+			drm_atomic_helper_resume(dev, disp->suspend);
+			disp->suspend = NULL;
+		}
+		return;
+	}
+}
+
+int
+nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
+			    struct drm_mode_create_dumb *args)
+{
+	struct nouveau_cli *cli = nouveau_cli(file_priv);
+	struct nouveau_bo *bo;
+	uint32_t domain;
+	int ret;
+
+	args->pitch = roundup(args->width * (args->bpp / 8), 256);
+	args->size = args->pitch * args->height;
+	args->size = roundup(args->size, PAGE_SIZE);
+
+	/* Use VRAM if there is any ; otherwise fallback to system memory */
+	if (nouveau_drm(dev)->client.device.info.ram_size != 0)
+		domain = NOUVEAU_GEM_DOMAIN_VRAM;
+	else
+		domain = NOUVEAU_GEM_DOMAIN_GART;
+
+	ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo);
+	if (ret)
+		return ret;
+
+	ret = drm_gem_handle_create(file_priv, &bo->bo.base, &args->handle);
+	drm_gem_object_put(&bo->bo.base);
+	return ret;
+}