[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 <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];
		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)
{
	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 & 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 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 & DRM_ROTATE_MASK) {
		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);

	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);
}

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;
}

#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(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,
		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;
		}

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