[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 <linux/seq_file.h>

#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>

#include "omap_dmm_tiler.h"
#include "omap_drv.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;
	int pin_count;
	const struct format *format;
	struct plane planes[4];
	/* lock for pinning (pin_count and planes.paddr) */
	struct mutex lock;
};

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];

		drm_gem_object_unreference_unlocked(plane->bo);
	}

	kfree(omap_fb);
}

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

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;
}

bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
{
	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	struct plane *plane = &omap_fb->planes[0];

	return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
}

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

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

		if (win->rotation & 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 & DRM_ROTATE_MASK) {
		case 0:
		case 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);

	mutex_lock(&omap_fb->lock);

	if (omap_fb->pin_count > 0) {
		omap_fb->pin_count++;
		mutex_unlock(&omap_fb->lock);
		return 0;
	}

	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);
	}

	omap_fb->pin_count++;

	mutex_unlock(&omap_fb->lock);

	return 0;

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

	mutex_unlock(&omap_fb->lock);

	return ret;
}

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

	mutex_lock(&omap_fb->lock);

	omap_fb->pin_count--;

	if (omap_fb->pin_count > 0) {
		mutex_unlock(&omap_fb->lock);
		return;
	}

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

	mutex_unlock(&omap_fb->lock);
}

/* 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;
}

#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, const struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct drm_gem_object *bos[4];
	struct drm_framebuffer *fb;
	int ret;

	ret = objects_lookup(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,
		const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
{
	struct omap_framebuffer *omap_fb = NULL;
	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;
	mutex_init(&omap_fb->lock);

	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;
		}

		if (pitch % format->planes[i].stride_bpp != 0) {
			dev_err(dev->dev,
				"buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n",
				pitch, 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;
		}

		if (i > 0 && pitch != mode_cmd->pitches[i - 1]) {
			dev_err(dev->dev,
				"pitches are not the same between framebuffer planes %d != %d\n",
				pitch, mode_cmd->pitches[i - 1]);
			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:
	kfree(omap_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
2d802453 AB	20	#include <linux/seq_file.h>
2d802453 AB	21
2d278f54 LP	22	#include <drm/drm_crtc.h>
2d278f54 LP	23	#include <drm/drm_crtc_helper.h>
cd5351f4	24
2d278f54 LP	25	#include "omap_dmm_tiler.h"
2d278f54 LP	26	#include "omap_drv.h"
cd5351f4	27
cd5351f4 RC	28	/*
	29	* framebuffer funcs
	30	*/
	31
ae43d7ca RC	32	/* per-format info: */
	33	struct format {
	34	enum omap_color_mode dss_format;
	35	uint32_t pixel_format;
	36	struct {
	37	int stride_bpp; /* this times width is stride */
	38	int sub_y; /* sub-sample in y dimension */
	39	} planes[4];
	40	bool yuv;
	41	};
	42
	43	static const struct format formats[] = {
	44	/* 16bpp [A]RGB: */
	45	{ OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */
	46	{ OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */
	47	{ OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */
	48	{ OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */
	49	{ OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */
	50	{ OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */
	51	{ OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */
	52	/* 24bpp RGB: */
	53	{ OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
	54	/* 32bpp [A]RGB: */
	55	{ OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */
	56	{ OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */
	57	{ OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */
	58	{ OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */
	59	/* YUV: */
	60	{ OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true },
	61	{ OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true },
	62	{ OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true },
	63	};
	64
a890e662 RC	65	/* convert from overlay's pixel formats bitmask to an array of fourcc's */
	66	uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
	67	uint32_t max_formats, enum omap_color_mode supported_modes)
	68	{
	69	uint32_t nformats = 0;
	70	int i = 0;
	71
	72	for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
	73	if (formats[i].dss_format & supported_modes)
	74	pixel_formats[nformats++] = formats[i].pixel_format;
	75
	76	return nformats;
	77	}
	78
9a0774e0 RC	79	/* per-plane info for the fb: */
	80	struct plane {
	81	struct drm_gem_object *bo;
	82	uint32_t pitch;
	83	uint32_t offset;
	84	dma_addr_t paddr;
	85	};
	86
cd5351f4 RC	87	#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
	88
	89	struct omap_framebuffer {
	90	struct drm_framebuffer base;
f36eb5a8	91	int pin_count;
ae43d7ca	92	const struct format *format;
9a0774e0	93	struct plane planes[4];
f524ab7c TV	94	/* lock for pinning (pin_count and planes.paddr) */
f524ab7c TV	95	struct mutex lock;
cd5351f4 RC	96	};
	97
	98	static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
	99	struct drm_file *file_priv,
	100	unsigned int *handle)
	101	{
	102	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9a0774e0 RC	103	return drm_gem_handle_create(file_priv,
9a0774e0 RC	104	omap_fb->planes[0].bo, handle);
cd5351f4 RC	105	}
	106
	107	static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
	108	{
cd5351f4	109	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9f18c95a	110	int i, n = drm_format_num_planes(fb->pixel_format);
cd5351f4 RC	111
	112	DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
	113
	114	drm_framebuffer_cleanup(fb);
	115
9a0774e0 RC	116	for (i = 0; i < n; i++) {
9a0774e0 RC	117	struct plane *plane = &omap_fb->planes[i];
76e4c327 ME	118
76e4c327 ME	119	drm_gem_object_unreference_unlocked(plane->bo);
cd5351f4 RC	120	}
	121
	122	kfree(omap_fb);
	123	}
	124
cd5351f4 RC	125	static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
	126	.create_handle = omap_framebuffer_create_handle,
	127	.destroy = omap_framebuffer_destroy,
cd5351f4 RC	128	};
cd5351f4 RC	129
3c810c61 RC	130	static uint32_t get_linear_addr(struct plane *plane,
	131	const struct format *format, int n, int x, int y)
	132	{
	133	uint32_t offset;
	134
	135	offset = plane->offset +
	136	(x * format->planes[n].stride_bpp) +
	137	(y * plane->pitch / format->planes[n].sub_y);
	138
	139	return plane->paddr + offset;
	140	}
	141
bfeece55 TV	142	bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
	143	{
	144	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	145	struct plane *plane = &omap_fb->planes[0];
	146
	147	return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
	148	}
	149
9a0774e0 RC	150	/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
9a0774e0 RC	151	*/
3c810c61 RC	152	void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
3c810c61 RC	153	struct omap_drm_window win, struct omap_overlay_info info)
9a0774e0 RC	154	{
	155	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	156	const struct format *format = omap_fb->format;
	157	struct plane *plane = &omap_fb->planes[0];
3c810c61 RC	158	uint32_t x, y, orient = 0;
	159
	160	info->color_mode = format->dss_format;
	161
	162	info->pos_x = win->crtc_x;
	163	info->pos_y = win->crtc_y;
	164	info->out_width = win->crtc_w;
	165	info->out_height = win->crtc_h;
	166	info->width = win->src_w;
	167	info->height = win->src_h;
	168
	169	x = win->src_x;
	170	y = win->src_y;
	171
	172	if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
	173	uint32_t w = win->src_w;
	174	uint32_t h = win->src_h;
	175
14152c8d	176	switch (win->rotation & DRM_ROTATE_MASK) {
3c810c61 RC	177	default:
	178	dev_err(fb->dev->dev, "invalid rotation: %02x",
	179	(uint32_t)win->rotation);
	180	/* fallthru to default to no rotation */
	181	case 0:
31ad61e4	182	case DRM_ROTATE_0:
3c810c61 RC	183	orient = 0;
3c810c61 RC	184	break;
31ad61e4	185	case DRM_ROTATE_90:
3c810c61 RC	186	orient = MASK_XY_FLIP \| MASK_X_INVERT;
3c810c61 RC	187	break;
31ad61e4	188	case DRM_ROTATE_180:
3c810c61 RC	189	orient = MASK_X_INVERT \| MASK_Y_INVERT;
3c810c61 RC	190	break;
31ad61e4	191	case DRM_ROTATE_270:
3c810c61 RC	192	orient = MASK_XY_FLIP \| MASK_Y_INVERT;
	193	break;
	194	}
9a0774e0	195
31ad61e4	196	if (win->rotation & DRM_REFLECT_X)
3c810c61 RC	197	orient ^= MASK_X_INVERT;
3c810c61 RC	198
31ad61e4	199	if (win->rotation & DRM_REFLECT_Y)
3c810c61 RC	200	orient ^= MASK_Y_INVERT;
	201
	202	/* adjust x,y offset for flip/invert: */
	203	if (orient & MASK_XY_FLIP)
	204	swap(w, h);
	205	if (orient & MASK_Y_INVERT)
	206	y += h - 1;
	207	if (orient & MASK_X_INVERT)
	208	x += w - 1;
9a0774e0	209
3c810c61 RC	210	omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
	211	info->rotation_type = OMAP_DSS_ROT_TILER;
	212	info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
	213	} else {
14152c8d	214	switch (win->rotation & DRM_ROTATE_MASK) {
5ac96345	215	case 0:
31ad61e4	216	case DRM_ROTATE_0:
5ac96345 TV	217	/* OK */
	218	break;
	219
	220	default:
	221	dev_warn(fb->dev->dev,
	222	"rotation '%d' ignored for non-tiled fb\n",
	223	win->rotation);
	224	win->rotation = 0;
	225	break;
	226	}
	227
3c810c61 RC	228	info->paddr = get_linear_addr(plane, format, 0, x, y);
	229	info->rotation_type = OMAP_DSS_ROT_DMA;
	230	info->screen_width = plane->pitch;
	231	}
	232
	233	/* convert to pixels: */
	234	info->screen_width /= format->planes[0].stride_bpp;
9a0774e0 RC	235
	236	if (format->dss_format == OMAP_DSS_COLOR_NV12) {
	237	plane = &omap_fb->planes[1];
3c810c61 RC	238
	239	if (info->rotation_type == OMAP_DSS_ROT_TILER) {
	240	WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
	241	omap_gem_rotated_paddr(plane->bo, orient,
	242	x/2, y/2, &info->p_uv_addr);
	243	} else {
	244	info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
	245	}
9a0774e0 RC	246	} else {
	247	info->p_uv_addr = 0;
	248	}
	249	}
	250
5833bd2f RC	251	/* pin, prepare for scanout: */
5833bd2f RC	252	int omap_framebuffer_pin(struct drm_framebuffer *fb)
b33f34d3	253	{
5833bd2f RC	254	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	255	int ret, i, n = drm_format_num_planes(fb->pixel_format);
	256
f524ab7c TV	257	mutex_lock(&omap_fb->lock);
f524ab7c TV	258
f36eb5a8 TV	259	if (omap_fb->pin_count > 0) {
f36eb5a8 TV	260	omap_fb->pin_count++;
f524ab7c	261	mutex_unlock(&omap_fb->lock);
f36eb5a8 TV	262	return 0;
	263	}
	264
5833bd2f RC	265	for (i = 0; i < n; i++) {
	266	struct plane *plane = &omap_fb->planes[i];
	267	ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
	268	if (ret)
	269	goto fail;
	270	omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
	271	}
b33f34d3	272
f36eb5a8 TV	273	omap_fb->pin_count++;
f36eb5a8 TV	274
f524ab7c TV	275	mutex_unlock(&omap_fb->lock);
f524ab7c TV	276
5833bd2f	277	return 0;
b33f34d3	278
5833bd2f RC	279	fail:
	280	for (i--; i >= 0; i--) {
	281	struct plane *plane = &omap_fb->planes[i];
	282	omap_gem_put_paddr(plane->bo);
	283	plane->paddr = 0;
	284	}
b33f34d3	285
f524ab7c TV	286	mutex_unlock(&omap_fb->lock);
f524ab7c TV	287
5833bd2f RC	288	return ret;
5833bd2f RC	289	}
b33f34d3	290
5833bd2f	291	/* unpin, no longer being scanned out: */
9c368506	292	void omap_framebuffer_unpin(struct drm_framebuffer *fb)
5833bd2f RC	293	{
5833bd2f RC	294	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
9c368506	295	int i, n = drm_format_num_planes(fb->pixel_format);
b33f34d3	296
f524ab7c TV	297	mutex_lock(&omap_fb->lock);
f524ab7c TV	298
f36eb5a8 TV	299	omap_fb->pin_count--;
f36eb5a8 TV	300
f524ab7c TV	301	if (omap_fb->pin_count > 0) {
f524ab7c TV	302	mutex_unlock(&omap_fb->lock);
9c368506	303	return;
f524ab7c	304	}
f36eb5a8	305
5833bd2f RC	306	for (i = 0; i < n; i++) {
5833bd2f RC	307	struct plane *plane = &omap_fb->planes[i];
9c368506	308	omap_gem_put_paddr(plane->bo);
5833bd2f	309	plane->paddr = 0;
b33f34d3 RC	310	}
b33f34d3 RC	311
f524ab7c	312	mutex_unlock(&omap_fb->lock);
b33f34d3 RC	313	}
b33f34d3 RC	314
cd5351f4 RC	315	/* iterate thru all the connectors, returning ones that are attached
	316	* to the same fb..
	317	*/
	318	struct drm_connector *omap_framebuffer_get_next_connector(
	319	struct drm_framebuffer fb, struct drm_connector from)
	320	{
	321	struct drm_device *dev = fb->dev;
	322	struct list_head *connector_list = &dev->mode_config.connector_list;
	323	struct drm_connector *connector = from;
	324
ddcd49ed	325	if (!from)
06fb220b LP	326	return list_first_entry_or_null(connector_list, typeof(*from),
06fb220b LP	327	head);
cd5351f4 RC	328
	329	list_for_each_entry_from(connector, connector_list, head) {
	330	if (connector != from) {
	331	struct drm_encoder *encoder = connector->encoder;
	332	struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
f4510a27	333	if (crtc && crtc->primary->fb == fb)
cd5351f4	334	return connector;
ddcd49ed	335
cd5351f4 RC	336	}
	337	}
	338
	339	return NULL;
	340	}
cd5351f4	341
f6b6036e RC	342	#ifdef CONFIG_DEBUG_FS
	343	void omap_framebuffer_describe(struct drm_framebuffer fb, struct seq_file m)
	344	{
	345	struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
	346	int i, n = drm_format_num_planes(fb->pixel_format);
	347
	348	seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
	349	(char *)&fb->pixel_format);
	350
	351	for (i = 0; i < n; i++) {
	352	struct plane *plane = &omap_fb->planes[i];
	353	seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
	354	i, plane->offset, plane->pitch);
	355	omap_gem_describe(plane->bo, m);
	356	}
	357	}
	358	#endif
	359
cd5351f4	360	struct drm_framebuffer omap_framebuffer_create(struct drm_device dev,
1eb83451	361	struct drm_file file, const struct drm_mode_fb_cmd2 mode_cmd)
cd5351f4	362	{
ae43d7ca	363	struct drm_gem_object *bos[4];
cd5351f4	364	struct drm_framebuffer *fb;
ae43d7ca RC	365	int ret;
ae43d7ca RC	366
a8ad0bd8	367	ret = objects_lookup(file, mode_cmd->pixel_format,
ae43d7ca RC	368	bos, mode_cmd->handles);
	369	if (ret)
	370	return ERR_PTR(ret);
	371
	372	fb = omap_framebuffer_init(dev, mode_cmd, bos);
	373	if (IS_ERR(fb)) {
	374	int i, n = drm_format_num_planes(mode_cmd->pixel_format);
	375	for (i = 0; i < n; i++)
	376	drm_gem_object_unreference_unlocked(bos[i]);
	377	return fb;
cd5351f4 RC	378	}
	379	return fb;
	380	}
	381
	382	struct drm_framebuffer omap_framebuffer_init(struct drm_device dev,
1eb83451	383	const struct drm_mode_fb_cmd2 mode_cmd, struct drm_gem_object *bos)
cd5351f4	384	{
925e4940	385	struct omap_framebuffer *omap_fb = NULL;
cd5351f4	386	struct drm_framebuffer *fb = NULL;
ae43d7ca	387	const struct format *format = NULL;
9a0774e0	388	int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
cd5351f4	389
ae43d7ca	390	DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
cd5351f4	391	dev, mode_cmd, mode_cmd->width, mode_cmd->height,
ae43d7ca RC	392	(char *)&mode_cmd->pixel_format);
	393
	394	for (i = 0; i < ARRAY_SIZE(formats); i++) {
	395	if (formats[i].pixel_format == mode_cmd->pixel_format) {
	396	format = &formats[i];
	397	break;
	398	}
	399	}
	400
	401	if (!format) {
	402	dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
	403	(char *)&mode_cmd->pixel_format);
	404	ret = -EINVAL;
	405	goto fail;
	406	}
cd5351f4	407
cd5351f4 RC	408	omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
cd5351f4 RC	409	if (!omap_fb) {
ae43d7ca	410	ret = -ENOMEM;
cd5351f4 RC	411	goto fail;
	412	}
	413
	414	fb = &omap_fb->base;
9a0774e0	415	omap_fb->format = format;
f524ab7c	416	mutex_init(&omap_fb->lock);
cd5351f4	417
9a0774e0 RC	418	for (i = 0; i < n; i++) {
	419	struct plane *plane = &omap_fb->planes[i];
	420	int size, pitch = mode_cmd->pitches[i];
cd5351f4	421
9a0774e0 RC	422	if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
	423	dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
	424	pitch, mode_cmd->width * format->planes[i].stride_bpp);
	425	ret = -EINVAL;
	426	goto fail;
	427	}
cd5351f4	428
2dab0bab TV	429	if (pitch % format->planes[i].stride_bpp != 0) {
	430	dev_err(dev->dev,
	431	"buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n",
	432	pitch, format->planes[i].stride_bpp);
	433	ret = -EINVAL;
	434	goto fail;
	435	}
	436
9a0774e0 RC	437	size = pitch * mode_cmd->height / format->planes[i].sub_y;
9a0774e0 RC	438
3c810c61	439	if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
9a0774e0 RC	440	dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
	441	bos[i]->size - mode_cmd->offsets[i], size);
	442	ret = -EINVAL;
	443	goto fail;
	444	}
	445
be4f235c TV	446	if (i > 0 && pitch != mode_cmd->pitches[i - 1]) {
	447	dev_err(dev->dev,
	448	"pitches are not the same between framebuffer planes %d != %d\n",
	449	pitch, mode_cmd->pitches[i - 1]);
	450	ret = -EINVAL;
	451	goto fail;
	452	}
	453
9a0774e0 RC	454	plane->bo = bos[i];
9a0774e0 RC	455	plane->offset = mode_cmd->offsets[i];
9f18c95a RC	456	plane->pitch = pitch;
9f18c95a RC	457	plane->paddr = 0;
cd5351f4 RC	458	}
	459
	460	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
	461
c7d73f6a DV	462	ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
	463	if (ret) {
	464	dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
	465	goto fail;
	466	}
	467
	468	DBG("create: FB ID: %d (%p)", fb->base.id, fb);
	469
cd5351f4 RC	470	return fb;
	471
	472	fail:
925e4940	473	kfree(omap_fb);
ddcd49ed	474
ae43d7ca	475	return ERR_PTR(ret);
cd5351f4	476	}