[deliverable/linux.git] / drivers / gpu / drm / omapdrm / omap_fb.c

/*
 * drivers/gpu/drm/omapdrm/omap_fb.c
 *
 * Copyright (C) 2011 Texas Instruments
 * Author: Rob Clark <rob@ti.com>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "omap_drv.h"
#include "omap_dmm_tiler.h"

#include "drm_crtc.h"
#include "drm_crtc_helper.h"

/*
 * framebuffer funcs
 */

/* per-format info: */
struct format {
	enum omap_color_mode dss_format;
	uint32_t pixel_format;
	struct {
		int stride_bpp;           /* this times width is stride */
		int sub_y;                /* sub-sample in y dimension */
	} planes[4];
	bool yuv;
};

static const struct format formats[] = {
	/* 16bpp [A]RGB: */
	{ OMAP_DSS_COLOR_RGB16,       DRM_FORMAT_RGB565,   {{2, 1}}, false }, /* RGB16-565 */
	{ OMAP_DSS_COLOR_RGB12U,      DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */
	{ OMAP_DSS_COLOR_RGBX16,      DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */
	{ OMAP_DSS_COLOR_RGBA16,      DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */
	{ OMAP_DSS_COLOR_ARGB16,      DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */
	{ OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */
	{ OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */
	/* 24bpp RGB: */
	{ OMAP_DSS_COLOR_RGB24P,      DRM_FORMAT_RGB888,   {{3, 1}}, false }, /* RGB24-888 */
	/* 32bpp [A]RGB: */
	{ OMAP_DSS_COLOR_RGBX32,      DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */
	{ OMAP_DSS_COLOR_RGB24U,      DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */
	{ OMAP_DSS_COLOR_RGBA32,      DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */
	{ OMAP_DSS_COLOR_ARGB32,      DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */
	/* YUV: */
	{ OMAP_DSS_COLOR_NV12,        DRM_FORMAT_NV12,     {{1, 1}, {1, 2}}, true },
	{ OMAP_DSS_COLOR_YUV2,        DRM_FORMAT_YUYV,     {{2, 1}}, true },
	{ OMAP_DSS_COLOR_UYVY,        DRM_FORMAT_UYVY,     {{2, 1}}, true },
};

/* convert from overlay's pixel formats bitmask to an array of fourcc's */
uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
		uint32_t max_formats, enum omap_color_mode supported_modes)
{
	uint32_t nformats = 0;
	int i = 0;

	for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
		if (formats[i].dss_format & supported_modes)
			pixel_formats[nformats++] = formats[i].pixel_format;

	return nformats;
}

/* per-plane info for the fb: */
struct plane {
	struct drm_gem_object *bo;
	uint32_t pitch;
	uint32_t offset;
	dma_addr_t paddr;
};

#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)

struct omap_framebuffer {
	struct drm_framebuffer base;
	const struct format *format;
	struct plane planes[4];
};

static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
		struct drm_file *file_priv,
		unsigned int *handle)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	return drm_gem_handle_create(file_priv,
			omap_fb->planes[0].bo, handle);
}

static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	int i, n = drm_format_num_planes(fb->pixel_format);

	DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);

	drm_framebuffer_cleanup(fb);

	for (i = 0; i < n; i++) {
		struct plane *plane = &omap_fb->planes[i];
		if (plane->bo)
			drm_gem_object_unreference_unlocked(plane->bo);
	}

	kfree(omap_fb);
}

static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
		struct drm_file *file_priv, unsigned flags, unsigned color,
		struct drm_clip_rect *clips, unsigned num_clips)
{
	int i;

	drm_modeset_lock_all(fb->dev);

	for (i = 0; i < num_clips; i++) {
		omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
					clips[i].x2 - clips[i].x1,
					clips[i].y2 - clips[i].y1);
	}

	drm_modeset_unlock_all(fb->dev);

	return 0;
}

static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
	.create_handle = omap_framebuffer_create_handle,
	.destroy = omap_framebuffer_destroy,
	.dirty = omap_framebuffer_dirty,
};

static uint32_t get_linear_addr(struct plane *plane,
		const struct format *format, int n, int x, int y)
{
	uint32_t offset;

	offset = plane->offset +
			(x * format->planes[n].stride_bpp) +
			(y * plane->pitch / format->planes[n].sub_y);

	return plane->paddr + offset;
}

/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
 */
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
		struct omap_drm_window *win, struct omap_overlay_info *info)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	const struct format *format = omap_fb->format;
	struct plane *plane = &omap_fb->planes[0];
	uint32_t x, y, orient = 0;

	info->color_mode = format->dss_format;

	info->pos_x      = win->crtc_x;
	info->pos_y      = win->crtc_y;
	info->out_width  = win->crtc_w;
	info->out_height = win->crtc_h;
	info->width      = win->src_w;
	info->height     = win->src_h;

	x = win->src_x;
	y = win->src_y;

	if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
		uint32_t w = win->src_w;
		uint32_t h = win->src_h;

		switch (win->rotation & 0xf) {
		default:
			dev_err(fb->dev->dev, "invalid rotation: %02x",
					(uint32_t)win->rotation);
			/* fallthru to default to no rotation */
		case 0:
		case BIT(DRM_ROTATE_0):
			orient = 0;
			break;
		case BIT(DRM_ROTATE_90):
			orient = MASK_XY_FLIP | MASK_X_INVERT;
			break;
		case BIT(DRM_ROTATE_180):
			orient = MASK_X_INVERT | MASK_Y_INVERT;
			break;
		case BIT(DRM_ROTATE_270):
			orient = MASK_XY_FLIP | MASK_Y_INVERT;
			break;
		}

		if (win->rotation & BIT(DRM_REFLECT_X))
			orient ^= MASK_X_INVERT;

		if (win->rotation & BIT(DRM_REFLECT_Y))
			orient ^= MASK_Y_INVERT;

		/* adjust x,y offset for flip/invert: */
		if (orient & MASK_XY_FLIP)
			swap(w, h);
		if (orient & MASK_Y_INVERT)
			y += h - 1;
		if (orient & MASK_X_INVERT)
			x += w - 1;

		omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
		info->rotation_type = OMAP_DSS_ROT_TILER;
		info->screen_width  = omap_gem_tiled_stride(plane->bo, orient);
	} else {
		switch (win->rotation & 0xf) {
		case 0:
		case BIT(DRM_ROTATE_0):
			/* OK */
			break;

		default:
			dev_warn(fb->dev->dev,
				"rotation '%d' ignored for non-tiled fb\n",
				win->rotation);
			win->rotation = 0;
			break;
		}

		info->paddr         = get_linear_addr(plane, format, 0, x, y);
		info->rotation_type = OMAP_DSS_ROT_DMA;
		info->screen_width  = plane->pitch;
	}

	/* convert to pixels: */
	info->screen_width /= format->planes[0].stride_bpp;

	if (format->dss_format == OMAP_DSS_COLOR_NV12) {
		plane = &omap_fb->planes[1];

		if (info->rotation_type == OMAP_DSS_ROT_TILER) {
			WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
			omap_gem_rotated_paddr(plane->bo, orient,
					x/2, y/2, &info->p_uv_addr);
		} else {
			info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
		}
	} else {
		info->p_uv_addr = 0;
	}
}

/* pin, prepare for scanout: */
int omap_framebuffer_pin(struct drm_framebuffer *fb)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	int ret, i, n = drm_format_num_planes(fb->pixel_format);

	for (i = 0; i < n; i++) {
		struct plane *plane = &omap_fb->planes[i];
		ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
		if (ret)
			goto fail;
		omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
	}

	return 0;

fail:
	for (i--; i >= 0; i--) {
		struct plane *plane = &omap_fb->planes[i];
		omap_gem_put_paddr(plane->bo);
		plane->paddr = 0;
	}

	return ret;
}

/* unpin, no longer being scanned out: */
int omap_framebuffer_unpin(struct drm_framebuffer *fb)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	int ret, i, n = drm_format_num_planes(fb->pixel_format);

	for (i = 0; i < n; i++) {
		struct plane *plane = &omap_fb->planes[i];
		ret = omap_gem_put_paddr(plane->bo);
		if (ret)
			goto fail;
		plane->paddr = 0;
	}

	return 0;

fail:
	return ret;
}

struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	if (p >= drm_format_num_planes(fb->pixel_format))
		return NULL;
	return omap_fb->planes[p].bo;
}

/* iterate thru all the connectors, returning ones that are attached
 * to the same fb..
 */
struct drm_connector *omap_framebuffer_get_next_connector(
		struct drm_framebuffer *fb, struct drm_connector *from)
{
	struct drm_device *dev = fb->dev;
	struct list_head *connector_list = &dev->mode_config.connector_list;
	struct drm_connector *connector = from;

	if (!from)
		return list_first_entry_or_null(connector_list, typeof(*from),
						head);

	list_for_each_entry_from(connector, connector_list, head) {
		if (connector != from) {
			struct drm_encoder *encoder = connector->encoder;
			struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
			if (crtc && crtc->primary->fb == fb)
				return connector;

		}
	}

	return NULL;
}

/* flush an area of the framebuffer (in case of manual update display that
 * is not automatically flushed)
 */
void omap_framebuffer_flush(struct drm_framebuffer *fb,
		int x, int y, int w, int h)
{
	struct drm_connector *connector = NULL;

	VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);

	/* FIXME: This is racy - no protection against modeset config changes. */
	while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
		/* only consider connectors that are part of a chain */
		if (connector->encoder && connector->encoder->crtc) {
			/* TODO: maybe this should propagate thru the crtc who
			 * could do the coordinate translation..
			 */
			struct drm_crtc *crtc = connector->encoder->crtc;
			int cx = max(0, x - crtc->x);
			int cy = max(0, y - crtc->y);
			int cw = w + (x - crtc->x) - cx;
			int ch = h + (y - crtc->y) - cy;

			omap_connector_flush(connector, cx, cy, cw, ch);
		}
	}
}

#ifdef CONFIG_DEBUG_FS
void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	int i, n = drm_format_num_planes(fb->pixel_format);

	seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
			(char *)&fb->pixel_format);

	for (i = 0; i < n; i++) {
		struct plane *plane = &omap_fb->planes[i];
		seq_printf(m, "   %d: offset=%d pitch=%d, obj: ",
				i, plane->offset, plane->pitch);
		omap_gem_describe(plane->bo, m);
	}
}
#endif

struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
		struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct drm_gem_object *bos[4];
	struct drm_framebuffer *fb;
	int ret;

	ret = objects_lookup(dev, file, mode_cmd->pixel_format,
			bos, mode_cmd->handles);
	if (ret)
		return ERR_PTR(ret);

	fb = omap_framebuffer_init(dev, mode_cmd, bos);
	if (IS_ERR(fb)) {
		int i, n = drm_format_num_planes(mode_cmd->pixel_format);
		for (i = 0; i < n; i++)
			drm_gem_object_unreference_unlocked(bos[i]);
		return fb;
	}
	return fb;
}

struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
		struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
{
	struct omap_framebuffer *omap_fb;
	struct drm_framebuffer *fb = NULL;
	const struct format *format = NULL;
	int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);

	DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
			dev, mode_cmd, mode_cmd->width, mode_cmd->height,
			(char *)&mode_cmd->pixel_format);

	for (i = 0; i < ARRAY_SIZE(formats); i++) {
		if (formats[i].pixel_format == mode_cmd->pixel_format) {
			format = &formats[i];
			break;
		}
	}

	if (!format) {
		dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
				(char *)&mode_cmd->pixel_format);
		ret = -EINVAL;
		goto fail;
	}

	omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
	if (!omap_fb) {
		ret = -ENOMEM;
		goto fail;
	}

	fb = &omap_fb->base;
	omap_fb->format = format;

	for (i = 0; i < n; i++) {
		struct plane *plane = &omap_fb->planes[i];
		int size, pitch = mode_cmd->pitches[i];

		if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
			dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
					pitch, mode_cmd->width * format->planes[i].stride_bpp);
			ret = -EINVAL;
			goto fail;
		}

		size = pitch * mode_cmd->height / format->planes[i].sub_y;

		if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
			dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
					bos[i]->size - mode_cmd->offsets[i], size);
			ret = -EINVAL;
			goto fail;
		}

		plane->bo     = bos[i];
		plane->offset = mode_cmd->offsets[i];
		plane->pitch  = pitch;
		plane->paddr  = 0;
	}

	drm_helper_mode_fill_fb_struct(fb, mode_cmd);

	ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
	if (ret) {
		dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
		goto fail;
	}

	DBG("create: FB ID: %d (%p)", fb->base.id, fb);

	return fb;

fail:
	if (fb)
		omap_framebuffer_destroy(fb);

	return ERR_PTR(ret);
}
Commit	Line	Data
cd5351f4	1	/*
8bb0daff	2	* drivers/gpu/drm/omapdrm/omap_fb.c
cd5351f4 RC	3	*
	4	* Copyright (C) 2011 Texas Instruments
	5	* Author: Rob Clark <rob@ti.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License version 2 as published by
	9	* the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along with
	17	* this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include "omap_drv.h"
3c810c61	21	#include "omap_dmm_tiler.h"
cd5351f4 RC	22
	23	#include "drm_crtc.h"
	24	#include "drm_crtc_helper.h"
	25
cd5351f4 RC	26	/*
	27	* framebuffer funcs
	28	*/
	29
ae43d7ca RC	30	/* per-format info: */
	31	struct format {
	32	enum omap_color_mode dss_format;
	33	uint32_t pixel_format;
	34	struct {
	35	int stride_bpp; /* this times width is stride */
	36	int sub_y; /* sub-sample in y dimension */
	37	} planes[4];
	38	bool yuv;
	39	};
	40
	41	static const struct format formats[] = {
	42	/* 16bpp [A]RGB: */
	43	{ OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */
	44	{ OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */
	45	{ OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */
	46	{ OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */
	47	{ OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */
	48	{ OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */
	49	{ OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */
	50	/* 24bpp RGB: */
	51	{ OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
	52	/* 32bpp [A]RGB: */
	53	{ OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */
	54	{ OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */
	55	{ OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */
	56	{ OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */
	57	/* YUV: */
	58	{ OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true },
	59	{ OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true },
	60	{ OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true },
	61	};
	62
a890e662 RC	63	/* convert from overlay's pixel formats bitmask to an array of fourcc's */
	64	uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
	65	uint32_t max_formats, enum omap_color_mode supported_modes)
	66	{
	67	uint32_t nformats = 0;
	68	int i = 0;
	69
	70	for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
	71	if (formats[i].dss_format & supported_modes)
	72	pixel_formats[nformats++] = formats[i].pixel_format;
	73
	74	return nformats;
	75	}
	76
9a0774e0 RC	77	/* per-plane info for the fb: */
	78	struct plane {
	79	struct drm_gem_object *bo;
	80	uint32_t pitch;
	81	uint32_t offset;
	82	dma_addr_t paddr;
	83	};
	84
cd5351f4 RC	85	#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
	86
	87	struct omap_framebuffer {
	88	struct drm_framebuffer base;
ae43d7ca	89	const struct format *format;
9a0774e0	90	struct plane planes[4];
cd5351f4 RC	91	};
	92
	93	static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
	94	struct drm_file *file_priv,
	95	unsigned int *handle)
	96	{
	97	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9a0774e0 RC	98	return drm_gem_handle_create(file_priv,
9a0774e0 RC	99	omap_fb->planes[0].bo, handle);
cd5351f4 RC	100	}
	101
	102	static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
	103	{
cd5351f4	104	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9f18c95a	105	int i, n = drm_format_num_planes(fb->pixel_format);
cd5351f4 RC	106
	107	DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
	108
	109	drm_framebuffer_cleanup(fb);
	110
9a0774e0 RC	111	for (i = 0; i < n; i++) {
	112	struct plane *plane = &omap_fb->planes[i];
	113	if (plane->bo)
	114	drm_gem_object_unreference_unlocked(plane->bo);
cd5351f4 RC	115	}
	116
	117	kfree(omap_fb);
	118	}
	119
	120	static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
	121	struct drm_file *file_priv, unsigned flags, unsigned color,
	122	struct drm_clip_rect *clips, unsigned num_clips)
	123	{
	124	int i;
	125
73e9efd4 VS	126	drm_modeset_lock_all(fb->dev);
73e9efd4 VS	127
cd5351f4 RC	128	for (i = 0; i < num_clips; i++) {
	129	omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
	130	clips[i].x2 - clips[i].x1,
	131	clips[i].y2 - clips[i].y1);
	132	}
	133
73e9efd4 VS	134	drm_modeset_unlock_all(fb->dev);
73e9efd4 VS	135
cd5351f4 RC	136	return 0;
	137	}
	138
	139	static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
	140	.create_handle = omap_framebuffer_create_handle,
	141	.destroy = omap_framebuffer_destroy,
	142	.dirty = omap_framebuffer_dirty,
	143	};
	144
3c810c61 RC	145	static uint32_t get_linear_addr(struct plane *plane,
	146	const struct format *format, int n, int x, int y)
	147	{
	148	uint32_t offset;
	149
	150	offset = plane->offset +
	151	(x * format->planes[n].stride_bpp) +
	152	(y * plane->pitch / format->planes[n].sub_y);
	153
	154	return plane->paddr + offset;
	155	}
	156
9a0774e0 RC	157	/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
9a0774e0 RC	158	*/
3c810c61 RC	159	void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
3c810c61 RC	160	struct omap_drm_window win, struct omap_overlay_info info)
9a0774e0 RC	161	{
	162	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	163	const struct format *format = omap_fb->format;
	164	struct plane *plane = &omap_fb->planes[0];
3c810c61 RC	165	uint32_t x, y, orient = 0;
	166
	167	info->color_mode = format->dss_format;
	168
	169	info->pos_x = win->crtc_x;
	170	info->pos_y = win->crtc_y;
	171	info->out_width = win->crtc_w;
	172	info->out_height = win->crtc_h;
	173	info->width = win->src_w;
	174	info->height = win->src_h;
	175
	176	x = win->src_x;
	177	y = win->src_y;
	178
	179	if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
	180	uint32_t w = win->src_w;
	181	uint32_t h = win->src_h;
	182
	183	switch (win->rotation & 0xf) {
	184	default:
	185	dev_err(fb->dev->dev, "invalid rotation: %02x",
	186	(uint32_t)win->rotation);
	187	/* fallthru to default to no rotation */
	188	case 0:
	189	case BIT(DRM_ROTATE_0):
	190	orient = 0;
	191	break;
	192	case BIT(DRM_ROTATE_90):
	193	orient = MASK_XY_FLIP \| MASK_X_INVERT;
	194	break;
	195	case BIT(DRM_ROTATE_180):
	196	orient = MASK_X_INVERT \| MASK_Y_INVERT;
	197	break;
	198	case BIT(DRM_ROTATE_270):
	199	orient = MASK_XY_FLIP \| MASK_Y_INVERT;
	200	break;
	201	}
9a0774e0	202
3c810c61 RC	203	if (win->rotation & BIT(DRM_REFLECT_X))
	204	orient ^= MASK_X_INVERT;
	205
	206	if (win->rotation & BIT(DRM_REFLECT_Y))
	207	orient ^= MASK_Y_INVERT;
	208
	209	/* adjust x,y offset for flip/invert: */
	210	if (orient & MASK_XY_FLIP)
	211	swap(w, h);
	212	if (orient & MASK_Y_INVERT)
	213	y += h - 1;
	214	if (orient & MASK_X_INVERT)
	215	x += w - 1;
9a0774e0	216
3c810c61 RC	217	omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
	218	info->rotation_type = OMAP_DSS_ROT_TILER;
	219	info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
	220	} else {
5ac96345 TV	221	switch (win->rotation & 0xf) {
	222	case 0:
	223	case BIT(DRM_ROTATE_0):
	224	/* OK */
	225	break;
	226
	227	default:
	228	dev_warn(fb->dev->dev,
	229	"rotation '%d' ignored for non-tiled fb\n",
	230	win->rotation);
	231	win->rotation = 0;
	232	break;
	233	}
	234
3c810c61 RC	235	info->paddr = get_linear_addr(plane, format, 0, x, y);
	236	info->rotation_type = OMAP_DSS_ROT_DMA;
	237	info->screen_width = plane->pitch;
	238	}
	239
	240	/* convert to pixels: */
	241	info->screen_width /= format->planes[0].stride_bpp;
9a0774e0 RC	242
	243	if (format->dss_format == OMAP_DSS_COLOR_NV12) {
	244	plane = &omap_fb->planes[1];
3c810c61 RC	245
	246	if (info->rotation_type == OMAP_DSS_ROT_TILER) {
	247	WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
	248	omap_gem_rotated_paddr(plane->bo, orient,
	249	x/2, y/2, &info->p_uv_addr);
	250	} else {
	251	info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
	252	}
9a0774e0 RC	253	} else {
	254	info->p_uv_addr = 0;
	255	}
	256	}
	257
5833bd2f RC	258	/* pin, prepare for scanout: */
5833bd2f RC	259	int omap_framebuffer_pin(struct drm_framebuffer *fb)
b33f34d3	260	{
5833bd2f RC	261	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	262	int ret, i, n = drm_format_num_planes(fb->pixel_format);
	263
	264	for (i = 0; i < n; i++) {
	265	struct plane *plane = &omap_fb->planes[i];
	266	ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
	267	if (ret)
	268	goto fail;
	269	omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
	270	}
b33f34d3	271
5833bd2f	272	return 0;
b33f34d3	273
5833bd2f RC	274	fail:
	275	for (i--; i >= 0; i--) {
	276	struct plane *plane = &omap_fb->planes[i];
	277	omap_gem_put_paddr(plane->bo);
	278	plane->paddr = 0;
	279	}
b33f34d3	280
5833bd2f RC	281	return ret;
5833bd2f RC	282	}
b33f34d3	283
5833bd2f RC	284	/* unpin, no longer being scanned out: */
	285	int omap_framebuffer_unpin(struct drm_framebuffer *fb)
	286	{
	287	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	288	int ret, i, n = drm_format_num_planes(fb->pixel_format);
b33f34d3	289
5833bd2f RC	290	for (i = 0; i < n; i++) {
	291	struct plane *plane = &omap_fb->planes[i];
	292	ret = omap_gem_put_paddr(plane->bo);
	293	if (ret)
	294	goto fail;
	295	plane->paddr = 0;
b33f34d3 RC	296	}
b33f34d3 RC	297
5833bd2f	298	return 0;
b33f34d3	299
5833bd2f	300	fail:
b33f34d3 RC	301	return ret;
	302	}
	303
9a0774e0 RC	304	struct drm_gem_object omap_framebuffer_bo(struct drm_framebuffer fb, int p)
	305	{
	306	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9f18c95a	307	if (p >= drm_format_num_planes(fb->pixel_format))
9a0774e0 RC	308	return NULL;
9a0774e0 RC	309	return omap_fb->planes[p].bo;
cd5351f4 RC	310	}
	311
	312	/* iterate thru all the connectors, returning ones that are attached
	313	* to the same fb..
	314	*/
	315	struct drm_connector *omap_framebuffer_get_next_connector(
	316	struct drm_framebuffer fb, struct drm_connector from)
	317	{
	318	struct drm_device *dev = fb->dev;
	319	struct list_head *connector_list = &dev->mode_config.connector_list;
	320	struct drm_connector *connector = from;
	321
ddcd49ed	322	if (!from)
06fb220b LP	323	return list_first_entry_or_null(connector_list, typeof(*from),
06fb220b LP	324	head);
cd5351f4 RC	325
	326	list_for_each_entry_from(connector, connector_list, head) {
	327	if (connector != from) {
	328	struct drm_encoder *encoder = connector->encoder;
	329	struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
f4510a27	330	if (crtc && crtc->primary->fb == fb)
cd5351f4	331	return connector;
ddcd49ed	332
cd5351f4 RC	333	}
	334	}
	335
	336	return NULL;
	337	}
	338
	339	/* flush an area of the framebuffer (in case of manual update display that
	340	* is not automatically flushed)
	341	*/
	342	void omap_framebuffer_flush(struct drm_framebuffer *fb,
	343	int x, int y, int w, int h)
	344	{
	345	struct drm_connector *connector = NULL;
	346
	347	VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);
	348
6e9f798d	349	/* FIXME: This is racy - no protection against modeset config changes. */
cd5351f4 RC	350	while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
	351	/* only consider connectors that are part of a chain */
	352	if (connector->encoder && connector->encoder->crtc) {
	353	/* TODO: maybe this should propagate thru the crtc who
	354	* could do the coordinate translation..
	355	*/
	356	struct drm_crtc *crtc = connector->encoder->crtc;
	357	int cx = max(0, x - crtc->x);
	358	int cy = max(0, y - crtc->y);
	359	int cw = w + (x - crtc->x) - cx;
	360	int ch = h + (y - crtc->y) - cy;
	361
	362	omap_connector_flush(connector, cx, cy, cw, ch);
	363	}
	364	}
	365	}
	366
f6b6036e RC	367	#ifdef CONFIG_DEBUG_FS
	368	void omap_framebuffer_describe(struct drm_framebuffer fb, struct seq_file m)
	369	{
	370	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	371	int i, n = drm_format_num_planes(fb->pixel_format);
	372
	373	seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
	374	(char *)&fb->pixel_format);
	375
	376	for (i = 0; i < n; i++) {
	377	struct plane *plane = &omap_fb->planes[i];
	378	seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
	379	i, plane->offset, plane->pitch);
	380	omap_gem_describe(plane->bo, m);
	381	}
	382	}
	383	#endif
	384
cd5351f4	385	struct drm_framebuffer omap_framebuffer_create(struct drm_device dev,
ae43d7ca	386	struct drm_file file, struct drm_mode_fb_cmd2 mode_cmd)
cd5351f4	387	{
ae43d7ca	388	struct drm_gem_object *bos[4];
cd5351f4	389	struct drm_framebuffer *fb;
ae43d7ca RC	390	int ret;
	391
	392	ret = objects_lookup(dev, file, mode_cmd->pixel_format,
	393	bos, mode_cmd->handles);
	394	if (ret)
	395	return ERR_PTR(ret);
	396
	397	fb = omap_framebuffer_init(dev, mode_cmd, bos);
	398	if (IS_ERR(fb)) {
	399	int i, n = drm_format_num_planes(mode_cmd->pixel_format);
	400	for (i = 0; i < n; i++)
	401	drm_gem_object_unreference_unlocked(bos[i]);
	402	return fb;
cd5351f4 RC	403	}
	404	return fb;
	405	}
	406
	407	struct drm_framebuffer omap_framebuffer_init(struct drm_device dev,
ae43d7ca	408	struct drm_mode_fb_cmd2 mode_cmd, struct drm_gem_object *bos)
cd5351f4 RC	409	{
	410	struct omap_framebuffer *omap_fb;
	411	struct drm_framebuffer *fb = NULL;
ae43d7ca	412	const struct format *format = NULL;
9a0774e0	413	int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
cd5351f4	414
ae43d7ca	415	DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
cd5351f4	416	dev, mode_cmd, mode_cmd->width, mode_cmd->height,
ae43d7ca RC	417	(char *)&mode_cmd->pixel_format);
	418
	419	for (i = 0; i < ARRAY_SIZE(formats); i++) {
	420	if (formats[i].pixel_format == mode_cmd->pixel_format) {
	421	format = &formats[i];
	422	break;
	423	}
	424	}
	425
	426	if (!format) {
	427	dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
	428	(char *)&mode_cmd->pixel_format);
	429	ret = -EINVAL;
	430	goto fail;
	431	}
cd5351f4	432
cd5351f4 RC	433	omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
cd5351f4 RC	434	if (!omap_fb) {
ae43d7ca	435	ret = -ENOMEM;
cd5351f4 RC	436	goto fail;
	437	}
	438
	439	fb = &omap_fb->base;
9a0774e0	440	omap_fb->format = format;
cd5351f4	441
9a0774e0 RC	442	for (i = 0; i < n; i++) {
	443	struct plane *plane = &omap_fb->planes[i];
	444	int size, pitch = mode_cmd->pitches[i];
cd5351f4	445
9a0774e0 RC	446	if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
	447	dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
	448	pitch, mode_cmd->width * format->planes[i].stride_bpp);
	449	ret = -EINVAL;
	450	goto fail;
	451	}
cd5351f4	452
9a0774e0 RC	453	size = pitch * mode_cmd->height / format->planes[i].sub_y;
9a0774e0 RC	454
3c810c61	455	if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
9a0774e0 RC	456	dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
	457	bos[i]->size - mode_cmd->offsets[i], size);
	458	ret = -EINVAL;
	459	goto fail;
	460	}
	461
	462	plane->bo = bos[i];
	463	plane->offset = mode_cmd->offsets[i];
9f18c95a RC	464	plane->pitch = pitch;
9f18c95a RC	465	plane->paddr = 0;
cd5351f4 RC	466	}
	467
	468	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
	469
c7d73f6a DV	470	ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
	471	if (ret) {
	472	dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
	473	goto fail;
	474	}
	475
	476	DBG("create: FB ID: %d (%p)", fb->base.id, fb);
	477
cd5351f4 RC	478	return fb;
	479
	480	fail:
ddcd49ed	481	if (fb)
cd5351f4	482	omap_framebuffer_destroy(fb);
ddcd49ed	483
ae43d7ca	484	return ERR_PTR(ret);
cd5351f4	485	}