2 * drivers/gpu/drm/omapdrm/omap_fb.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
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.
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
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/>.
21 #include "omap_dmm_tiler.h"
24 #include "drm_crtc_helper.h"
30 /* per-format info: */
32 enum omap_color_mode dss_format;
33 uint32_t pixel_format;
35 int stride_bpp; /* this times width is stride */
36 int sub_y; /* sub-sample in y dimension */
41 static const struct format formats[] = {
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 */
51 { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
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 */
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 },
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)
67 uint32_t nformats = 0;
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;
77 /* per-plane info for the fb: */
79 struct drm_gem_object *bo;
85 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
87 struct omap_framebuffer {
88 struct drm_framebuffer base;
89 const struct format *format;
90 struct plane planes[4];
93 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
94 struct drm_file *file_priv,
97 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
98 return drm_gem_handle_create(file_priv,
99 omap_fb->planes[0].bo, handle);
102 static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
104 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
105 int i, n = drm_format_num_planes(fb->pixel_format);
107 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
109 drm_framebuffer_cleanup(fb);
111 for (i = 0; i < n; i++) {
112 struct plane *plane = &omap_fb->planes[i];
114 drm_gem_object_unreference_unlocked(plane->bo);
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)
126 for (i = 0; i < num_clips; i++) {
127 omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
128 clips[i].x2 - clips[i].x1,
129 clips[i].y2 - clips[i].y1);
135 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
136 .create_handle = omap_framebuffer_create_handle,
137 .destroy = omap_framebuffer_destroy,
138 .dirty = omap_framebuffer_dirty,
141 static uint32_t get_linear_addr(struct plane *plane,
142 const struct format *format, int n, int x, int y)
146 offset = plane->offset +
147 (x * format->planes[n].stride_bpp) +
148 (y * plane->pitch / format->planes[n].sub_y);
150 return plane->paddr + offset;
153 /* update ovl info for scanout, handles cases of multi-planar fb's, etc.
155 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
156 struct omap_drm_window *win, struct omap_overlay_info *info)
158 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
159 const struct format *format = omap_fb->format;
160 struct plane *plane = &omap_fb->planes[0];
161 uint32_t x, y, orient = 0;
163 info->color_mode = format->dss_format;
165 info->pos_x = win->crtc_x;
166 info->pos_y = win->crtc_y;
167 info->out_width = win->crtc_w;
168 info->out_height = win->crtc_h;
169 info->width = win->src_w;
170 info->height = win->src_h;
175 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
176 uint32_t w = win->src_w;
177 uint32_t h = win->src_h;
179 switch (win->rotation & 0xf) {
181 dev_err(fb->dev->dev, "invalid rotation: %02x",
182 (uint32_t)win->rotation);
183 /* fallthru to default to no rotation */
185 case BIT(DRM_ROTATE_0):
188 case BIT(DRM_ROTATE_90):
189 orient = MASK_XY_FLIP | MASK_X_INVERT;
191 case BIT(DRM_ROTATE_180):
192 orient = MASK_X_INVERT | MASK_Y_INVERT;
194 case BIT(DRM_ROTATE_270):
195 orient = MASK_XY_FLIP | MASK_Y_INVERT;
199 if (win->rotation & BIT(DRM_REFLECT_X))
200 orient ^= MASK_X_INVERT;
202 if (win->rotation & BIT(DRM_REFLECT_Y))
203 orient ^= MASK_Y_INVERT;
205 /* adjust x,y offset for flip/invert: */
206 if (orient & MASK_XY_FLIP)
208 if (orient & MASK_Y_INVERT)
210 if (orient & MASK_X_INVERT)
213 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
214 info->rotation_type = OMAP_DSS_ROT_TILER;
215 info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
217 info->paddr = get_linear_addr(plane, format, 0, x, y);
218 info->rotation_type = OMAP_DSS_ROT_DMA;
219 info->screen_width = plane->pitch;
222 /* convert to pixels: */
223 info->screen_width /= format->planes[0].stride_bpp;
225 if (format->dss_format == OMAP_DSS_COLOR_NV12) {
226 plane = &omap_fb->planes[1];
228 if (info->rotation_type == OMAP_DSS_ROT_TILER) {
229 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
230 omap_gem_rotated_paddr(plane->bo, orient,
231 x/2, y/2, &info->p_uv_addr);
233 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
240 /* pin, prepare for scanout: */
241 int omap_framebuffer_pin(struct drm_framebuffer *fb)
243 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
244 int ret, i, n = drm_format_num_planes(fb->pixel_format);
246 for (i = 0; i < n; i++) {
247 struct plane *plane = &omap_fb->planes[i];
248 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
251 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
257 for (i--; i >= 0; i--) {
258 struct plane *plane = &omap_fb->planes[i];
259 omap_gem_put_paddr(plane->bo);
266 /* unpin, no longer being scanned out: */
267 int omap_framebuffer_unpin(struct drm_framebuffer *fb)
269 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
270 int ret, i, n = drm_format_num_planes(fb->pixel_format);
272 for (i = 0; i < n; i++) {
273 struct plane *plane = &omap_fb->planes[i];
274 ret = omap_gem_put_paddr(plane->bo);
286 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
288 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
289 if (p >= drm_format_num_planes(fb->pixel_format))
291 return omap_fb->planes[p].bo;
294 /* iterate thru all the connectors, returning ones that are attached
297 struct drm_connector *omap_framebuffer_get_next_connector(
298 struct drm_framebuffer *fb, struct drm_connector *from)
300 struct drm_device *dev = fb->dev;
301 struct list_head *connector_list = &dev->mode_config.connector_list;
302 struct drm_connector *connector = from;
305 return list_first_entry(connector_list, typeof(*from), head);
307 list_for_each_entry_from(connector, connector_list, head) {
308 if (connector != from) {
309 struct drm_encoder *encoder = connector->encoder;
310 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
311 if (crtc && crtc->fb == fb)
320 /* flush an area of the framebuffer (in case of manual update display that
321 * is not automatically flushed)
323 void omap_framebuffer_flush(struct drm_framebuffer *fb,
324 int x, int y, int w, int h)
326 struct drm_connector *connector = NULL;
328 VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);
330 while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
331 /* only consider connectors that are part of a chain */
332 if (connector->encoder && connector->encoder->crtc) {
333 /* TODO: maybe this should propagate thru the crtc who
334 * could do the coordinate translation..
336 struct drm_crtc *crtc = connector->encoder->crtc;
337 int cx = max(0, x - crtc->x);
338 int cy = max(0, y - crtc->y);
339 int cw = w + (x - crtc->x) - cx;
340 int ch = h + (y - crtc->y) - cy;
342 omap_connector_flush(connector, cx, cy, cw, ch);
347 #ifdef CONFIG_DEBUG_FS
348 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
350 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
351 int i, n = drm_format_num_planes(fb->pixel_format);
353 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
354 (char *)&fb->pixel_format);
356 for (i = 0; i < n; i++) {
357 struct plane *plane = &omap_fb->planes[i];
358 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
359 i, plane->offset, plane->pitch);
360 omap_gem_describe(plane->bo, m);
365 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
366 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd)
368 struct drm_gem_object *bos[4];
369 struct drm_framebuffer *fb;
372 ret = objects_lookup(dev, file, mode_cmd->pixel_format,
373 bos, mode_cmd->handles);
377 fb = omap_framebuffer_init(dev, mode_cmd, bos);
379 int i, n = drm_format_num_planes(mode_cmd->pixel_format);
380 for (i = 0; i < n; i++)
381 drm_gem_object_unreference_unlocked(bos[i]);
387 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
388 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
390 struct omap_framebuffer *omap_fb;
391 struct drm_framebuffer *fb = NULL;
392 const struct format *format = NULL;
393 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
395 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
396 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
397 (char *)&mode_cmd->pixel_format);
399 for (i = 0; i < ARRAY_SIZE(formats); i++) {
400 if (formats[i].pixel_format == mode_cmd->pixel_format) {
401 format = &formats[i];
407 dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
408 (char *)&mode_cmd->pixel_format);
413 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
420 omap_fb->format = format;
422 for (i = 0; i < n; i++) {
423 struct plane *plane = &omap_fb->planes[i];
424 int size, pitch = mode_cmd->pitches[i];
426 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
427 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
428 pitch, mode_cmd->width * format->planes[i].stride_bpp);
433 size = pitch * mode_cmd->height / format->planes[i].sub_y;
435 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
436 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
437 bos[i]->size - mode_cmd->offsets[i], size);
443 plane->offset = mode_cmd->offsets[i];
444 plane->pitch = pitch;
448 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
450 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
452 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
456 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
462 omap_framebuffer_destroy(fb);