[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 <linux/console.h>

#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_FBDEV_EMULATION
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;
}

int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
			struct tegra_bo_tiling *tiling)
{
	struct tegra_fb *fb = to_tegra_fb(framebuffer);

	/* TODO: handle YUV formats? */
	*tiling = fb->planes[0]->tiling;

	return 0;
}

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) {
			if (bo->pages)
				vunmap(bo->vaddr);

			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 const 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,
				       const 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;
}

struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
					struct drm_file *file,
					const 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(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_FBDEV_EMULATION
static struct fb_ops tegra_fb_ops = {
	.owner = THIS_MODULE,
	.fb_fillrect = drm_fb_helper_sys_fillrect,
	.fb_copyarea = drm_fb_helper_sys_copyarea,
	.fb_imageblit = drm_fb_helper_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 tegra_drm *tegra = helper->dev->dev_private;
	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] = round_up(sizes->surface_width * bytes_per_pixel,
				  tegra->pitch_align);
	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 = drm_fb_helper_alloc_fbi(helper);
	if (IS_ERR(info)) {
		dev_err(drm->dev, "failed to allocate framebuffer info\n");
		drm_gem_object_unreference_unlocked(&bo->gem);
		return PTR_ERR(info);
	}

	fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
	if (IS_ERR(fbdev->fb)) {
		err = PTR_ERR(fbdev->fb);
		dev_err(drm->dev, "failed to allocate DRM framebuffer: %d\n",
			err);
		drm_gem_object_unreference_unlocked(&bo->gem);
		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;

	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];

	if (bo->pages) {
		bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP,
				 pgprot_writecombine(PAGE_KERNEL));
		if (!bo->vaddr) {
			dev_err(drm->dev, "failed to vmap() framebuffer\n");
			err = -ENOMEM;
			goto destroy;
		}
	}

	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:
	drm_fb_helper_release_fbi(helper);
	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 void tegra_fbdev_free(struct tegra_fbdev *fbdev)
{
	kfree(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: %d\n",
			err);
		return err;
	}

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

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

	return 0;

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

static void tegra_fbdev_exit(struct tegra_fbdev *fbdev)
{
	drm_fb_helper_unregister_fbi(&fbdev->base);
	drm_fb_helper_release_fbi(&fbdev->base);

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

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

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

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

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

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

	return 0;
}

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

	tegra_fbdev_free(tegra->fbdev);
#endif
}

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

	tegra_fbdev_exit(tegra->fbdev);
#endif
}

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

	console_lock();
	drm_fb_helper_set_suspend(&tegra->fbdev->base, 1);
	console_unlock();
#endif
}

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

	console_lock();
	drm_fb_helper_set_suspend(&tegra->fbdev->base, 0);
	console_unlock();
#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
986c58d1 TR	13	#include <linux/console.h>
986c58d1 TR	14
d8f4a9ed	15	#include "drm.h"
de2ba664 AM	16	#include "gem.h"
	17
	18	static inline struct tegra_fb to_tegra_fb(struct drm_framebuffer fb)
	19	{
	20	return container_of(fb, struct tegra_fb, base);
	21	}
	22
b110ef37	23	#ifdef CONFIG_DRM_FBDEV_EMULATION
de2ba664 AM	24	static inline struct tegra_fbdev to_tegra_fbdev(struct drm_fb_helper helper)
	25	{
	26	return container_of(helper, struct tegra_fbdev, base);
	27	}
60c2f709	28	#endif
de2ba664 AM	29
	30	struct tegra_bo tegra_fb_get_plane(struct drm_framebuffer framebuffer,
	31	unsigned int index)
	32	{
	33	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	34
	35	if (index >= drm_format_num_planes(framebuffer->pixel_format))
	36	return NULL;
	37
	38	return fb->planes[index];
	39	}
	40
db7fbdfd TR	41	bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer)
	42	{
	43	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	44
	45	if (fb->planes[0]->flags & TEGRA_BO_BOTTOM_UP)
	46	return true;
	47
	48	return false;
	49	}
	50
c134f019 TR	51	int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
c134f019 TR	52	struct tegra_bo_tiling *tiling)
773af77f TR	53	{
	54	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	55
c134f019 TR	56	/* TODO: handle YUV formats? */
c134f019 TR	57	*tiling = fb->planes[0]->tiling;
773af77f	58
c134f019	59	return 0;
773af77f TR	60	}
773af77f TR	61
de2ba664 AM	62	static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
	63	{
	64	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	65	unsigned int i;
	66
	67	for (i = 0; i < fb->num_planes; i++) {
	68	struct tegra_bo *bo = fb->planes[i];
	69
df06b759	70	if (bo) {
a63caf13	71	if (bo->pages)
df06b759 TR	72	vunmap(bo->vaddr);
df06b759 TR	73
de2ba664	74	drm_gem_object_unreference_unlocked(&bo->gem);
df06b759	75	}
de2ba664 AM	76	}
	77
	78	drm_framebuffer_cleanup(framebuffer);
	79	kfree(fb->planes);
	80	kfree(fb);
	81	}
	82
	83	static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer,
	84	struct drm_file file, unsigned int handle)
	85	{
	86	struct tegra_fb *fb = to_tegra_fb(framebuffer);
	87
	88	return drm_gem_handle_create(file, &fb->planes[0]->gem, handle);
	89	}
	90
4ecae785	91	static const struct drm_framebuffer_funcs tegra_fb_funcs = {
de2ba664 AM	92	.destroy = tegra_fb_destroy,
	93	.create_handle = tegra_fb_create_handle,
	94	};
	95
	96	static struct tegra_fb tegra_fb_alloc(struct drm_device drm,
1eb83451	97	const struct drm_mode_fb_cmd2 *mode_cmd,
de2ba664 AM	98	struct tegra_bo **planes,
	99	unsigned int num_planes)
	100	{
	101	struct tegra_fb *fb;
	102	unsigned int i;
	103	int err;
	104
	105	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
	106	if (!fb)
	107	return ERR_PTR(-ENOMEM);
	108
	109	fb->planes = kzalloc(num_planes * sizeof(*planes), GFP_KERNEL);
6b7c79d1 DC	110	if (!fb->planes) {
6b7c79d1 DC	111	kfree(fb);
de2ba664	112	return ERR_PTR(-ENOMEM);
6b7c79d1	113	}
de2ba664 AM	114
	115	fb->num_planes = num_planes;
	116
	117	drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
	118
	119	for (i = 0; i < fb->num_planes; i++)
	120	fb->planes[i] = planes[i];
	121
	122	err = drm_framebuffer_init(drm, &fb->base, &tegra_fb_funcs);
	123	if (err < 0) {
	124	dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
	125	err);
	126	kfree(fb->planes);
	127	kfree(fb);
	128	return ERR_PTR(err);
	129	}
	130
	131	return fb;
	132	}
	133
f9914214 TR	134	struct drm_framebuffer tegra_fb_create(struct drm_device drm,
f9914214 TR	135	struct drm_file *file,
1eb83451	136	const struct drm_mode_fb_cmd2 *cmd)
de2ba664 AM	137	{
	138	unsigned int hsub, vsub, i;
	139	struct tegra_bo *planes[4];
	140	struct drm_gem_object *gem;
	141	struct tegra_fb *fb;
	142	int err;
	143
	144	hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
	145	vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);
	146
	147	for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
	148	unsigned int width = cmd->width / (i ? hsub : 1);
	149	unsigned int height = cmd->height / (i ? vsub : 1);
	150	unsigned int size, bpp;
	151
a8ad0bd8	152	gem = drm_gem_object_lookup(file, cmd->handles[i]);
de2ba664 AM	153	if (!gem) {
	154	err = -ENXIO;
	155	goto unreference;
	156	}
	157
	158	bpp = drm_format_plane_cpp(cmd->pixel_format, i);
	159
	160	size = (height - 1) * cmd->pitches[i] +
	161	width * bpp + cmd->offsets[i];
	162
	163	if (gem->size < size) {
	164	err = -EINVAL;
	165	goto unreference;
	166	}
	167
	168	planes[i] = to_tegra_bo(gem);
	169	}
	170
	171	fb = tegra_fb_alloc(drm, cmd, planes, i);
	172	if (IS_ERR(fb)) {
	173	err = PTR_ERR(fb);
	174	goto unreference;
	175	}
	176
	177	return &fb->base;
	178
	179	unreference:
	180	while (i--)
	181	drm_gem_object_unreference_unlocked(&planes[i]->gem);
d8f4a9ed	182
de2ba664 AM	183	return ERR_PTR(err);
	184	}
	185
b110ef37	186	#ifdef CONFIG_DRM_FBDEV_EMULATION
de2ba664 AM	187	static struct fb_ops tegra_fb_ops = {
de2ba664 AM	188	.owner = THIS_MODULE,
0f7d9052 AT	189	.fb_fillrect = drm_fb_helper_sys_fillrect,
	190	.fb_copyarea = drm_fb_helper_sys_copyarea,
	191	.fb_imageblit = drm_fb_helper_sys_imageblit,
de2ba664 AM	192	.fb_check_var = drm_fb_helper_check_var,
	193	.fb_set_par = drm_fb_helper_set_par,
	194	.fb_blank = drm_fb_helper_blank,
	195	.fb_pan_display = drm_fb_helper_pan_display,
	196	.fb_setcmap = drm_fb_helper_setcmap,
	197	};
	198
	199	static int tegra_fbdev_probe(struct drm_fb_helper *helper,
	200	struct drm_fb_helper_surface_size *sizes)
	201	{
	202	struct tegra_fbdev *fbdev = to_tegra_fbdev(helper);
d1f3e1e0	203	struct tegra_drm *tegra = helper->dev->dev_private;
de2ba664 AM	204	struct drm_device *drm = helper->dev;
	205	struct drm_mode_fb_cmd2 cmd = { 0 };
	206	unsigned int bytes_per_pixel;
	207	struct drm_framebuffer *fb;
	208	unsigned long offset;
	209	struct fb_info *info;
	210	struct tegra_bo *bo;
	211	size_t size;
	212	int err;
	213
	214	bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
	215
	216	cmd.width = sizes->surface_width;
	217	cmd.height = sizes->surface_height;
d1f3e1e0 TR	218	cmd.pitches[0] = round_up(sizes->surface_width * bytes_per_pixel,
d1f3e1e0 TR	219	tegra->pitch_align);
de2ba664 AM	220	cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	221	sizes->surface_depth);
	222
	223	size = cmd.pitches[0] * cmd.height;
	224
773af77f	225	bo = tegra_bo_create(drm, size, 0);
de2ba664 AM	226	if (IS_ERR(bo))
	227	return PTR_ERR(bo);
	228
0f7d9052 AT	229	info = drm_fb_helper_alloc_fbi(helper);
0f7d9052 AT	230	if (IS_ERR(info)) {
de2ba664	231	dev_err(drm->dev, "failed to allocate framebuffer info\n");
b88f005e	232	drm_gem_object_unreference_unlocked(&bo->gem);
0f7d9052	233	return PTR_ERR(info);
de2ba664 AM	234	}
	235
	236	fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
	237	if (IS_ERR(fbdev->fb)) {
de2ba664	238	err = PTR_ERR(fbdev->fb);
cb10c81f TR	239	dev_err(drm->dev, "failed to allocate DRM framebuffer: %d\n",
cb10c81f TR	240	err);
b88f005e	241	drm_gem_object_unreference_unlocked(&bo->gem);
de2ba664 AM	242	goto release;
	243	}
	244
	245	fb = &fbdev->fb->base;
	246	helper->fb = fb;
	247	helper->fbdev = info;
	248
	249	info->par = helper;
	250	info->flags = FBINFO_FLAG_DEFAULT;
	251	info->fbops = &tegra_fb_ops;
	252
de2ba664 AM	253	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	254	drm_fb_helper_fill_var(info, helper, fb->width, fb->height);
	255
	256	offset = info->var.xoffset * bytes_per_pixel +
	257	info->var.yoffset * fb->pitches[0];
	258
df06b759 TR	259	if (bo->pages) {
	260	bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP,
	261	pgprot_writecombine(PAGE_KERNEL));
	262	if (!bo->vaddr) {
	263	dev_err(drm->dev, "failed to vmap() framebuffer\n");
	264	err = -ENOMEM;
	265	goto destroy;
	266	}
	267	}
	268
de2ba664	269	drm->mode_config.fb_base = (resource_size_t)bo->paddr;
9ab34151	270	info->screen_base = (void __iomem *)bo->vaddr + offset;
de2ba664 AM	271	info->screen_size = size;
	272	info->fix.smem_start = (unsigned long)(bo->paddr + offset);
	273	info->fix.smem_len = size;
	274
	275	return 0;
	276
	277	destroy:
	278	drm_framebuffer_unregister_private(fb);
	279	tegra_fb_destroy(fb);
	280	release:
0f7d9052	281	drm_fb_helper_release_fbi(helper);
de2ba664 AM	282	return err;
	283	}
	284
3a493879	285	static const struct drm_fb_helper_funcs tegra_fb_helper_funcs = {
de2ba664 AM	286	.fb_probe = tegra_fbdev_probe,
	287	};
	288
e2215321	289	static struct tegra_fbdev tegra_fbdev_create(struct drm_device drm)
de2ba664	290	{
de2ba664	291	struct tegra_fbdev *fbdev;
de2ba664 AM	292
	293	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
	294	if (!fbdev) {
	295	dev_err(drm->dev, "failed to allocate DRM fbdev\n");
	296	return ERR_PTR(-ENOMEM);
	297	}
	298
10a23102	299	drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs);
de2ba664	300
e2215321 TR	301	return fbdev;
	302	}
	303
1d1e6fe9 TR	304	static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
	305	{
	306	kfree(fbdev);
	307	}
	308
e2215321 TR	309	static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
	310	unsigned int preferred_bpp,
	311	unsigned int num_crtc,
	312	unsigned int max_connectors)
	313	{
	314	struct drm_device *drm = fbdev->base.dev;
	315	int err;
	316
de2ba664 AM	317	err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors);
de2ba664 AM	318	if (err < 0) {
cb10c81f TR	319	dev_err(drm->dev, "failed to initialize DRM FB helper: %d\n",
cb10c81f TR	320	err);
e2215321	321	return err;
de2ba664 AM	322	}
	323
	324	err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
	325	if (err < 0) {
cb10c81f	326	dev_err(drm->dev, "failed to add connectors: %d\n", err);
de2ba664 AM	327	goto fini;
	328	}
	329
de2ba664 AM	330	err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
de2ba664 AM	331	if (err < 0) {
cb10c81f TR	332	dev_err(drm->dev, "failed to set initial configuration: %d\n",
cb10c81f TR	333	err);
de2ba664 AM	334	goto fini;
	335	}
	336
e2215321	337	return 0;
de2ba664 AM	338
	339	fini:
	340	drm_fb_helper_fini(&fbdev->base);
e2215321	341	return err;
de2ba664 AM	342	}
de2ba664 AM	343
1d1e6fe9	344	static void tegra_fbdev_exit(struct tegra_fbdev *fbdev)
de2ba664	345	{
0f7d9052 AT	346	drm_fb_helper_unregister_fbi(&fbdev->base);
0f7d9052 AT	347	drm_fb_helper_release_fbi(&fbdev->base);
de2ba664 AM	348
	349	if (fbdev->fb) {
	350	drm_framebuffer_unregister_private(&fbdev->fb->base);
3feaf3e5	351	drm_framebuffer_remove(&fbdev->fb->base);
de2ba664 AM	352	}
	353
	354	drm_fb_helper_fini(&fbdev->base);
1d1e6fe9	355	tegra_fbdev_free(fbdev);
de2ba664 AM	356	}
de2ba664 AM	357
60c2f709 TR	358	void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev)
60c2f709 TR	359	{
5ea1f752 RC	360	if (fbdev)
5ea1f752 RC	361	drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->base);
60c2f709 TR	362	}
60c2f709 TR	363
f9914214	364	void tegra_fb_output_poll_changed(struct drm_device *drm)
d8f4a9ed	365	{
386a2a71	366	struct tegra_drm *tegra = drm->dev_private;
d8f4a9ed	367
386a2a71 TR	368	if (tegra->fbdev)
386a2a71 TR	369	drm_fb_helper_hotplug_event(&tegra->fbdev->base);
d8f4a9ed	370	}
60c2f709	371	#endif
d8f4a9ed	372
e2215321	373	int tegra_drm_fb_prepare(struct drm_device *drm)
d8f4a9ed	374	{
b110ef37	375	#ifdef CONFIG_DRM_FBDEV_EMULATION
386a2a71	376	struct tegra_drm *tegra = drm->dev_private;
d8f4a9ed	377
e2215321	378	tegra->fbdev = tegra_fbdev_create(drm);
60c2f709 TR	379	if (IS_ERR(tegra->fbdev))
	380	return PTR_ERR(tegra->fbdev);
	381	#endif
d8f4a9ed TR	382
	383	return 0;
	384	}
	385
1d1e6fe9 TR	386	void tegra_drm_fb_free(struct drm_device *drm)
1d1e6fe9 TR	387	{
b110ef37	388	#ifdef CONFIG_DRM_FBDEV_EMULATION
1d1e6fe9 TR	389	struct tegra_drm *tegra = drm->dev_private;
	390
	391	tegra_fbdev_free(tegra->fbdev);
	392	#endif
	393	}
	394
e2215321 TR	395	int tegra_drm_fb_init(struct drm_device *drm)
e2215321 TR	396	{
b110ef37	397	#ifdef CONFIG_DRM_FBDEV_EMULATION
e2215321 TR	398	struct tegra_drm *tegra = drm->dev_private;
	399	int err;
	400
	401	err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc,
	402	drm->mode_config.num_connector);
	403	if (err < 0)
	404	return err;
	405	#endif
	406
	407	return 0;
	408	}
	409
d8f4a9ed TR	410	void tegra_drm_fb_exit(struct drm_device *drm)
d8f4a9ed TR	411	{
b110ef37	412	#ifdef CONFIG_DRM_FBDEV_EMULATION
386a2a71	413	struct tegra_drm *tegra = drm->dev_private;
d8f4a9ed	414
1d1e6fe9	415	tegra_fbdev_exit(tegra->fbdev);
60c2f709	416	#endif
d8f4a9ed	417	}
986c58d1 TR	418
	419	void tegra_drm_fb_suspend(struct drm_device *drm)
	420	{
	421	#ifdef CONFIG_DRM_FBDEV_EMULATION
	422	struct tegra_drm *tegra = drm->dev_private;
	423
	424	console_lock();
	425	drm_fb_helper_set_suspend(&tegra->fbdev->base, 1);
	426	console_unlock();
	427	#endif
	428	}
	429
	430	void tegra_drm_fb_resume(struct drm_device *drm)
	431	{
	432	#ifdef CONFIG_DRM_FBDEV_EMULATION
	433	struct tegra_drm *tegra = drm->dev_private;
	434
	435	console_lock();
	436	drm_fb_helper_set_suspend(&tegra->fbdev->base, 0);
	437	console_unlock();
	438	#endif
	439	}