[deliverable/linux.git] / drivers / gpu / drm / tegra / fb.c

/*
 * Copyright (C) 2012-2013 Avionic Design GmbH
 * Copyright (C) 2012 NVIDIA CORPORATION.  All rights reserved.
 *
 * Based on the KMS/FB CMA helpers
 *   Copyright (C) 2012 Analog Device Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include "drm.h"
#include "gem.h"

static inline struct tegra_fb *to_tegra_fb(struct drm_framebuffer *fb)
{
	return container_of(fb, struct tegra_fb, base);
}

#ifdef CONFIG_DRM_TEGRA_FBDEV
static inline struct tegra_fbdev *to_tegra_fbdev(struct drm_fb_helper *helper)
{
	return container_of(helper, struct tegra_fbdev, base);
}
#endif

struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
				    unsigned int index)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);

	if (index >= drm_format_num_planes(framebuffer->pixel_format))
		return NULL;

	return fb->planes[index];
}

bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);

	if (fb->planes[0]->flags & TEGRA_BO_BOTTOM_UP)
		return true;

	return false;
}

bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);

	if (fb->planes[0]->flags & TEGRA_BO_TILED)
		return true;

	return false;
}

static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	unsigned int i;

	for (i = 0; i < fb->num_planes; i++) {
		struct tegra_bo *bo = fb->planes[i];

		if (bo)
			drm_gem_object_unreference_unlocked(&bo->gem);
	}

	drm_framebuffer_cleanup(framebuffer);
	kfree(fb->planes);
	kfree(fb);
}

static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer,
				  struct drm_file *file, unsigned int *handle)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);

	return drm_gem_handle_create(file, &fb->planes[0]->gem, handle);
}

static struct drm_framebuffer_funcs tegra_fb_funcs = {
	.destroy = tegra_fb_destroy,
	.create_handle = tegra_fb_create_handle,
};

static struct tegra_fb *tegra_fb_alloc(struct drm_device *drm,
				       struct drm_mode_fb_cmd2 *mode_cmd,
				       struct tegra_bo **planes,
				       unsigned int num_planes)
{
	struct tegra_fb *fb;
	unsigned int i;
	int err;

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

	fb->planes = kzalloc(num_planes * sizeof(*planes), GFP_KERNEL);
	if (!fb->planes) {
		kfree(fb);
		return ERR_PTR(-ENOMEM);
	}

	fb->num_planes = num_planes;

	drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);

	for (i = 0; i < fb->num_planes; i++)
		fb->planes[i] = planes[i];

	err = drm_framebuffer_init(drm, &fb->base, &tegra_fb_funcs);
	if (err < 0) {
		dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
			err);
		kfree(fb->planes);
		kfree(fb);
		return ERR_PTR(err);
	}

	return fb;
}

static struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
					       struct drm_file *file,
					       struct drm_mode_fb_cmd2 *cmd)
{
	unsigned int hsub, vsub, i;
	struct tegra_bo *planes[4];
	struct drm_gem_object *gem;
	struct tegra_fb *fb;
	int err;

	hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
	vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);

	for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
		unsigned int width = cmd->width / (i ? hsub : 1);
		unsigned int height = cmd->height / (i ? vsub : 1);
		unsigned int size, bpp;

		gem = drm_gem_object_lookup(drm, file, cmd->handles[i]);
		if (!gem) {
			err = -ENXIO;
			goto unreference;
		}

		bpp = drm_format_plane_cpp(cmd->pixel_format, i);

		size = (height - 1) * cmd->pitches[i] +
		       width * bpp + cmd->offsets[i];

		if (gem->size < size) {
			err = -EINVAL;
			goto unreference;
		}

		planes[i] = to_tegra_bo(gem);
	}

	fb = tegra_fb_alloc(drm, cmd, planes, i);
	if (IS_ERR(fb)) {
		err = PTR_ERR(fb);
		goto unreference;
	}

	return &fb->base;

unreference:
	while (i--)
		drm_gem_object_unreference_unlocked(&planes[i]->gem);

	return ERR_PTR(err);
}

#ifdef CONFIG_DRM_TEGRA_FBDEV
static struct fb_ops tegra_fb_ops = {
	.owner = THIS_MODULE,
	.fb_fillrect = sys_fillrect,
	.fb_copyarea = sys_copyarea,
	.fb_imageblit = sys_imageblit,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_blank = drm_fb_helper_blank,
	.fb_pan_display = drm_fb_helper_pan_display,
	.fb_setcmap = drm_fb_helper_setcmap,
};

static int tegra_fbdev_probe(struct drm_fb_helper *helper,
			     struct drm_fb_helper_surface_size *sizes)
{
	struct tegra_fbdev *fbdev = to_tegra_fbdev(helper);
	struct drm_device *drm = helper->dev;
	struct drm_mode_fb_cmd2 cmd = { 0 };
	unsigned int bytes_per_pixel;
	struct drm_framebuffer *fb;
	unsigned long offset;
	struct fb_info *info;
	struct tegra_bo *bo;
	size_t size;
	int err;

	bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);

	cmd.width = sizes->surface_width;
	cmd.height = sizes->surface_height;
	cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
	cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
						     sizes->surface_depth);

	size = cmd.pitches[0] * cmd.height;

	bo = tegra_bo_create(drm, size, 0);
	if (IS_ERR(bo))
		return PTR_ERR(bo);

	info = framebuffer_alloc(0, drm->dev);
	if (!info) {
		dev_err(drm->dev, "failed to allocate framebuffer info\n");
		tegra_bo_free_object(&bo->gem);
		return -ENOMEM;
	}

	fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
	if (IS_ERR(fbdev->fb)) {
		dev_err(drm->dev, "failed to allocate DRM framebuffer\n");
		err = PTR_ERR(fbdev->fb);
		goto release;
	}

	fb = &fbdev->fb->base;
	helper->fb = fb;
	helper->fbdev = info;

	info->par = helper;
	info->flags = FBINFO_FLAG_DEFAULT;
	info->fbops = &tegra_fb_ops;

	err = fb_alloc_cmap(&info->cmap, 256, 0);
	if (err < 0) {
		dev_err(drm->dev, "failed to allocate color map: %d\n", err);
		goto destroy;
	}

	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	drm_fb_helper_fill_var(info, helper, fb->width, fb->height);

	offset = info->var.xoffset * bytes_per_pixel +
		 info->var.yoffset * fb->pitches[0];

	drm->mode_config.fb_base = (resource_size_t)bo->paddr;
	info->screen_base = (void __iomem *)bo->vaddr + offset;
	info->screen_size = size;
	info->fix.smem_start = (unsigned long)(bo->paddr + offset);
	info->fix.smem_len = size;

	return 0;

destroy:
	drm_framebuffer_unregister_private(fb);
	tegra_fb_destroy(fb);
release:
	framebuffer_release(info);
	return err;
}

static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = {
	.fb_probe = tegra_fbdev_probe,
};

static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm)
{
	struct tegra_fbdev *fbdev;

	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
	if (!fbdev) {
		dev_err(drm->dev, "failed to allocate DRM fbdev\n");
		return ERR_PTR(-ENOMEM);
	}

	drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs);

	return fbdev;
}

static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
			    unsigned int preferred_bpp,
			    unsigned int num_crtc,
			    unsigned int max_connectors)
{
	struct drm_device *drm = fbdev->base.dev;
	int err;

	err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors);
	if (err < 0) {
		dev_err(drm->dev, "failed to initialize DRM FB helper\n");
		return err;
	}

	err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
	if (err < 0) {
		dev_err(drm->dev, "failed to add connectors\n");
		goto fini;
	}

	err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
	if (err < 0) {
		dev_err(drm->dev, "failed to set initial configuration\n");
		goto fini;
	}

	return 0;

fini:
	drm_fb_helper_fini(&fbdev->base);
	return err;
}

static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
{
	struct fb_info *info = fbdev->base.fbdev;

	if (info) {
		int err;

		err = unregister_framebuffer(info);
		if (err < 0)
			DRM_DEBUG_KMS("failed to unregister framebuffer\n");

		if (info->cmap.len)
			fb_dealloc_cmap(&info->cmap);

		framebuffer_release(info);
	}

	if (fbdev->fb) {
		drm_framebuffer_unregister_private(&fbdev->fb->base);
		tegra_fb_destroy(&fbdev->fb->base);
	}

	drm_fb_helper_fini(&fbdev->base);
	kfree(fbdev);
}

void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev)
{
	if (fbdev)
		drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->base);
}

static void tegra_fb_output_poll_changed(struct drm_device *drm)
{
	struct tegra_drm *tegra = drm->dev_private;

	if (tegra->fbdev)
		drm_fb_helper_hotplug_event(&tegra->fbdev->base);
}
#endif

static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
	.fb_create = tegra_fb_create,
#ifdef CONFIG_DRM_TEGRA_FBDEV
	.output_poll_changed = tegra_fb_output_poll_changed,
#endif
};

int tegra_drm_fb_prepare(struct drm_device *drm)
{
#ifdef CONFIG_DRM_TEGRA_FBDEV
	struct tegra_drm *tegra = drm->dev_private;
#endif

	drm->mode_config.min_width = 0;
	drm->mode_config.min_height = 0;

	drm->mode_config.max_width = 4096;
	drm->mode_config.max_height = 4096;

	drm->mode_config.funcs = &tegra_drm_mode_funcs;

#ifdef CONFIG_DRM_TEGRA_FBDEV
	tegra->fbdev = tegra_fbdev_create(drm);
	if (IS_ERR(tegra->fbdev))
		return PTR_ERR(tegra->fbdev);
#endif

	return 0;
}

int tegra_drm_fb_init(struct drm_device *drm)
{
#ifdef CONFIG_DRM_TEGRA_FBDEV
	struct tegra_drm *tegra = drm->dev_private;
	int err;

	err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc,
			       drm->mode_config.num_connector);
	if (err < 0)
		return err;
#endif

	return 0;
}

void tegra_drm_fb_exit(struct drm_device *drm)
{
#ifdef CONFIG_DRM_TEGRA_FBDEV
	struct tegra_drm *tegra = drm->dev_private;

	tegra_fbdev_free(tegra->fbdev);
#endif
}
Commit	Line	Data
d8f4a9ed	1	/*
de2ba664	2	* Copyright (C) 2012-2013 Avionic Design GmbH
d8f4a9ed TR	3	* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
d8f4a9ed TR	4	*
de2ba664 AM	5	* Based on the KMS/FB CMA helpers
	6	* Copyright (C) 2012 Analog Device Inc.
	7	*
d8f4a9ed TR	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include "drm.h"
de2ba664 AM	14	#include "gem.h"
	15
	16	static inline struct tegra_fb to_tegra_fb(struct drm_framebuffer fb)
	17	{
	18	return container_of(fb, struct tegra_fb, base);
	19	}
	20
60c2f709	21	#ifdef CONFIG_DRM_TEGRA_FBDEV
de2ba664 AM	22	static inline struct tegra_fbdev to_tegra_fbdev(struct drm_fb_helper helper)
	23	{
	24	return container_of(helper, struct tegra_fbdev, base);
	25	}
60c2f709	26	#endif
de2ba664 AM	27
	28	struct tegra_bo tegra_fb_get_plane(struct drm_framebuffer framebuffer,
	29	unsigned int index)
	30	{
	31	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	32
	33	if (index >= drm_format_num_planes(framebuffer->pixel_format))
	34	return NULL;
	35
	36	return fb->planes[index];
	37	}
	38
db7fbdfd TR	39	bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer)
	40	{
	41	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	42
	43	if (fb->planes[0]->flags & TEGRA_BO_BOTTOM_UP)
	44	return true;
	45
	46	return false;
	47	}
	48
773af77f TR	49	bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer)
	50	{
	51	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	52
	53	if (fb->planes[0]->flags & TEGRA_BO_TILED)
	54	return true;
	55
	56	return false;
	57	}
	58
de2ba664 AM	59	static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
	60	{
	61	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	62	unsigned int i;
	63
	64	for (i = 0; i < fb->num_planes; i++) {
	65	struct tegra_bo *bo = fb->planes[i];
	66
	67	if (bo)
	68	drm_gem_object_unreference_unlocked(&bo->gem);
	69	}
	70
	71	drm_framebuffer_cleanup(framebuffer);
	72	kfree(fb->planes);
	73	kfree(fb);
	74	}
	75
	76	static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer,
	77	struct drm_file file, unsigned int handle)
	78	{
	79	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	80
	81	return drm_gem_handle_create(file, &fb->planes[0]->gem, handle);
	82	}
	83
	84	static struct drm_framebuffer_funcs tegra_fb_funcs = {
	85	.destroy = tegra_fb_destroy,
	86	.create_handle = tegra_fb_create_handle,
	87	};
	88
	89	static struct tegra_fb tegra_fb_alloc(struct drm_device drm,
	90	struct drm_mode_fb_cmd2 *mode_cmd,
	91	struct tegra_bo **planes,
	92	unsigned int num_planes)
	93	{
	94	struct tegra_fb *fb;
	95	unsigned int i;
	96	int err;
	97
	98	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
	99	if (!fb)
	100	return ERR_PTR(-ENOMEM);
	101
	102	fb->planes = kzalloc(num_planes * sizeof(*planes), GFP_KERNEL);
6b7c79d1 DC	103	if (!fb->planes) {
6b7c79d1 DC	104	kfree(fb);
de2ba664	105	return ERR_PTR(-ENOMEM);
6b7c79d1	106	}
de2ba664 AM	107
	108	fb->num_planes = num_planes;
	109
	110	drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
	111
	112	for (i = 0; i < fb->num_planes; i++)
	113	fb->planes[i] = planes[i];
	114
	115	err = drm_framebuffer_init(drm, &fb->base, &tegra_fb_funcs);
	116	if (err < 0) {
	117	dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
	118	err);
	119	kfree(fb->planes);
	120	kfree(fb);
	121	return ERR_PTR(err);
	122	}
	123
	124	return fb;
	125	}
	126
	127	static struct drm_framebuffer tegra_fb_create(struct drm_device drm,
	128	struct drm_file *file,
	129	struct drm_mode_fb_cmd2 *cmd)
	130	{
	131	unsigned int hsub, vsub, i;
	132	struct tegra_bo *planes[4];
	133	struct drm_gem_object *gem;
	134	struct tegra_fb *fb;
	135	int err;
	136
	137	hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
	138	vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);
	139
	140	for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
	141	unsigned int width = cmd->width / (i ? hsub : 1);
	142	unsigned int height = cmd->height / (i ? vsub : 1);
	143	unsigned int size, bpp;
	144
	145	gem = drm_gem_object_lookup(drm, file, cmd->handles[i]);
	146	if (!gem) {
	147	err = -ENXIO;
	148	goto unreference;
	149	}
	150
	151	bpp = drm_format_plane_cpp(cmd->pixel_format, i);
	152
	153	size = (height - 1) * cmd->pitches[i] +
	154	width * bpp + cmd->offsets[i];
	155
	156	if (gem->size < size) {
	157	err = -EINVAL;
	158	goto unreference;
	159	}
	160
	161	planes[i] = to_tegra_bo(gem);
	162	}
	163
	164	fb = tegra_fb_alloc(drm, cmd, planes, i);
	165	if (IS_ERR(fb)) {
	166	err = PTR_ERR(fb);
	167	goto unreference;
	168	}
	169
	170	return &fb->base;
171
172	unreference:
173	while (i--)
174	drm_gem_object_unreference_unlocked(&planes[i]->gem);
d8f4a9ed	175
de2ba664 AM	176	return ERR_PTR(err);
	177	}
	178
60c2f709	179	#ifdef CONFIG_DRM_TEGRA_FBDEV
de2ba664 AM	180	static struct fb_ops tegra_fb_ops = {
	181	.owner = THIS_MODULE,
	182	.fb_fillrect = sys_fillrect,
	183	.fb_copyarea = sys_copyarea,
	184	.fb_imageblit = sys_imageblit,
	185	.fb_check_var = drm_fb_helper_check_var,
	186	.fb_set_par = drm_fb_helper_set_par,
	187	.fb_blank = drm_fb_helper_blank,
	188	.fb_pan_display = drm_fb_helper_pan_display,
	189	.fb_setcmap = drm_fb_helper_setcmap,
	190	};
	191
	192	static int tegra_fbdev_probe(struct drm_fb_helper *helper,
	193	struct drm_fb_helper_surface_size *sizes)
	194	{
	195	struct tegra_fbdev *fbdev = to_tegra_fbdev(helper);
	196	struct drm_device *drm = helper->dev;
	197	struct drm_mode_fb_cmd2 cmd = { 0 };
	198	unsigned int bytes_per_pixel;
	199	struct drm_framebuffer *fb;
	200	unsigned long offset;
	201	struct fb_info *info;
	202	struct tegra_bo *bo;
	203	size_t size;
	204	int err;
	205
	206	bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
	207
	208	cmd.width = sizes->surface_width;
	209	cmd.height = sizes->surface_height;
	210	cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
	211	cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	212	sizes->surface_depth);
	213
	214	size = cmd.pitches[0] * cmd.height;
	215
773af77f	216	bo = tegra_bo_create(drm, size, 0);
de2ba664 AM	217	if (IS_ERR(bo))
	218	return PTR_ERR(bo);
	219
	220	info = framebuffer_alloc(0, drm->dev);
	221	if (!info) {
	222	dev_err(drm->dev, "failed to allocate framebuffer info\n");
	223	tegra_bo_free_object(&bo->gem);
	224	return -ENOMEM;
	225	}
	226
	227	fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
	228	if (IS_ERR(fbdev->fb)) {
	229	dev_err(drm->dev, "failed to allocate DRM framebuffer\n");
	230	err = PTR_ERR(fbdev->fb);
	231	goto release;
	232	}
	233
	234	fb = &fbdev->fb->base;
	235	helper->fb = fb;
	236	helper->fbdev = info;
	237
	238	info->par = helper;
	239	info->flags = FBINFO_FLAG_DEFAULT;
	240	info->fbops = &tegra_fb_ops;
	241
	242	err = fb_alloc_cmap(&info->cmap, 256, 0);
	243	if (err < 0) {
	244	dev_err(drm->dev, "failed to allocate color map: %d\n", err);
	245	goto destroy;
	246	}
	247
	248	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	249	drm_fb_helper_fill_var(info, helper, fb->width, fb->height);
	250
	251	offset = info->var.xoffset * bytes_per_pixel +
	252	info->var.yoffset * fb->pitches[0];
	253
	254	drm->mode_config.fb_base = (resource_size_t)bo->paddr;
9ab34151	255	info->screen_base = (void __iomem *)bo->vaddr + offset;
de2ba664 AM	256	info->screen_size = size;
	257	info->fix.smem_start = (unsigned long)(bo->paddr + offset);
	258	info->fix.smem_len = size;
	259
	260	return 0;
	261
	262	destroy:
	263	drm_framebuffer_unregister_private(fb);
	264	tegra_fb_destroy(fb);
	265	release:
	266	framebuffer_release(info);
	267	return err;
	268	}
	269
3a493879	270	static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = {
de2ba664 AM	271	.fb_probe = tegra_fbdev_probe,
	272	};
	273
e2215321	274	static struct tegra_fbdev tegra_fbdev_create(struct drm_device drm)
de2ba664	275	{
de2ba664	276	struct tegra_fbdev *fbdev;
de2ba664 AM	277
	278	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
	279	if (!fbdev) {
	280	dev_err(drm->dev, "failed to allocate DRM fbdev\n");
	281	return ERR_PTR(-ENOMEM);
	282	}
	283
10a23102	284	drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs);
de2ba664	285
e2215321 TR	286	return fbdev;
	287	}
	288
	289	static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
	290	unsigned int preferred_bpp,
	291	unsigned int num_crtc,
	292	unsigned int max_connectors)
	293	{
	294	struct drm_device *drm = fbdev->base.dev;
	295	int err;
	296
de2ba664 AM	297	err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors);
	298	if (err < 0) {
	299	dev_err(drm->dev, "failed to initialize DRM FB helper\n");
e2215321	300	return err;
de2ba664 AM	301	}
	302
	303	err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
	304	if (err < 0) {
	305	dev_err(drm->dev, "failed to add connectors\n");
	306	goto fini;
	307	}
	308
de2ba664 AM	309	err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
	310	if (err < 0) {
	311	dev_err(drm->dev, "failed to set initial configuration\n");
	312	goto fini;
	313	}
	314
e2215321	315	return 0;
de2ba664 AM	316
	317	fini:
	318	drm_fb_helper_fini(&fbdev->base);
e2215321	319	return err;
de2ba664 AM	320	}
	321
	322	static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
	323	{
	324	struct fb_info *info = fbdev->base.fbdev;
	325
	326	if (info) {
	327	int err;
	328
	329	err = unregister_framebuffer(info);
	330	if (err < 0)
	331	DRM_DEBUG_KMS("failed to unregister framebuffer\n");
	332
	333	if (info->cmap.len)
	334	fb_dealloc_cmap(&info->cmap);
	335
	336	framebuffer_release(info);
	337	}
	338
	339	if (fbdev->fb) {
	340	drm_framebuffer_unregister_private(&fbdev->fb->base);
	341	tegra_fb_destroy(&fbdev->fb->base);
	342	}
	343
	344	drm_fb_helper_fini(&fbdev->base);
	345	kfree(fbdev);
	346	}
	347
60c2f709 TR	348	void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev)
60c2f709 TR	349	{
5ea1f752 RC	350	if (fbdev)
5ea1f752 RC	351	drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->base);
60c2f709 TR	352	}
60c2f709 TR	353
de2ba664	354	static void tegra_fb_output_poll_changed(struct drm_device *drm)
d8f4a9ed	355	{
386a2a71	356	struct tegra_drm *tegra = drm->dev_private;
d8f4a9ed	357
386a2a71 TR	358	if (tegra->fbdev)
386a2a71 TR	359	drm_fb_helper_hotplug_event(&tegra->fbdev->base);
d8f4a9ed	360	}
60c2f709	361	#endif
d8f4a9ed TR	362
d8f4a9ed TR	363	static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
de2ba664	364	.fb_create = tegra_fb_create,
60c2f709	365	#ifdef CONFIG_DRM_TEGRA_FBDEV
de2ba664	366	.output_poll_changed = tegra_fb_output_poll_changed,
60c2f709	367	#endif
d8f4a9ed TR	368	};
d8f4a9ed TR	369
e2215321	370	int tegra_drm_fb_prepare(struct drm_device *drm)
d8f4a9ed	371	{
60c2f709	372	#ifdef CONFIG_DRM_TEGRA_FBDEV
386a2a71	373	struct tegra_drm *tegra = drm->dev_private;
60c2f709	374	#endif
d8f4a9ed TR	375
	376	drm->mode_config.min_width = 0;
	377	drm->mode_config.min_height = 0;
	378
	379	drm->mode_config.max_width = 4096;
	380	drm->mode_config.max_height = 4096;
	381
	382	drm->mode_config.funcs = &tegra_drm_mode_funcs;
	383
60c2f709	384	#ifdef CONFIG_DRM_TEGRA_FBDEV
e2215321	385	tegra->fbdev = tegra_fbdev_create(drm);
60c2f709 TR	386	if (IS_ERR(tegra->fbdev))
	387	return PTR_ERR(tegra->fbdev);
	388	#endif
d8f4a9ed TR	389
	390	return 0;
	391	}
	392
e2215321 TR	393	int tegra_drm_fb_init(struct drm_device *drm)
	394	{
	395	#ifdef CONFIG_DRM_TEGRA_FBDEV
	396	struct tegra_drm *tegra = drm->dev_private;
	397	int err;
	398
	399	err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc,
	400	drm->mode_config.num_connector);
	401	if (err < 0)
	402	return err;
	403	#endif
	404
	405	return 0;
	406	}
	407
d8f4a9ed TR	408	void tegra_drm_fb_exit(struct drm_device *drm)
d8f4a9ed TR	409	{
60c2f709	410	#ifdef CONFIG_DRM_TEGRA_FBDEV
386a2a71	411	struct tegra_drm *tegra = drm->dev_private;
d8f4a9ed	412
386a2a71	413	tegra_fbdev_free(tegra->fbdev);
60c2f709	414	#endif
d8f4a9ed	415	}