2 * drivers/staging/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/>.
23 #include "drm_crtc_helper.h"
29 /* per-format info: */
31 enum omap_color_mode dss_format;
32 uint32_t pixel_format;
34 int stride_bpp; /* this times width is stride */
35 int sub_y; /* sub-sample in y dimension */
40 static const struct format formats[] = {
42 { OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */
43 { OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */
44 { OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */
45 { OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */
46 { OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */
47 { OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */
48 { OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */
50 { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
52 { OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */
53 { OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */
54 { OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */
55 { OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */
57 { OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true },
58 { OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true },
59 { OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true },
62 /* convert from overlay's pixel formats bitmask to an array of fourcc's */
63 uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
64 uint32_t max_formats, enum omap_color_mode supported_modes)
66 uint32_t nformats = 0;
69 for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
70 if (formats[i].dss_format & supported_modes)
71 pixel_formats[nformats++] = formats[i].pixel_format;
76 /* per-plane info for the fb: */
78 struct drm_gem_object *bo;
84 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
86 struct omap_framebuffer {
87 struct drm_framebuffer base;
88 const struct format *format;
89 struct plane planes[4];
92 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
93 struct drm_file *file_priv,
96 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
97 return drm_gem_handle_create(file_priv,
98 omap_fb->planes[0].bo, handle);
101 static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
103 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
104 int i, n = drm_format_num_planes(omap_fb->format->pixel_format);
106 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
108 drm_framebuffer_cleanup(fb);
110 for (i = 0; i < n; i++) {
111 struct plane *plane = &omap_fb->planes[i];
113 drm_gem_object_unreference_unlocked(plane->bo);
119 static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
120 struct drm_file *file_priv, unsigned flags, unsigned color,
121 struct drm_clip_rect *clips, unsigned num_clips)
125 for (i = 0; i < num_clips; i++) {
126 omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
127 clips[i].x2 - clips[i].x1,
128 clips[i].y2 - clips[i].y1);
134 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
135 .create_handle = omap_framebuffer_create_handle,
136 .destroy = omap_framebuffer_destroy,
137 .dirty = omap_framebuffer_dirty,
140 /* pins buffer in preparation for scanout */
141 int omap_framebuffer_pin(struct drm_framebuffer *fb)
143 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
144 int ret, i, n = drm_format_num_planes(omap_fb->format->pixel_format);
146 for (i = 0; i < n; i++) {
147 struct plane *plane = &omap_fb->planes[i];
148 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
157 struct plane *plane = &omap_fb->planes[i];
158 omap_gem_put_paddr(plane->bo);
163 /* releases buffer when done with scanout */
164 void omap_framebuffer_unpin(struct drm_framebuffer *fb)
166 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
167 int i, n = drm_format_num_planes(omap_fb->format->pixel_format);
169 for (i = 0; i < n; i++) {
170 struct plane *plane = &omap_fb->planes[i];
171 omap_gem_put_paddr(plane->bo);
175 /* update ovl info for scanout, handles cases of multi-planar fb's, etc.
177 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, int x, int y,
178 struct omap_overlay_info *info)
180 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
181 const struct format *format = omap_fb->format;
182 struct plane *plane = &omap_fb->planes[0];
185 offset = plane->offset +
186 (x * format->planes[0].stride_bpp) +
187 (y * plane->pitch / format->planes[0].sub_y);
189 info->color_mode = format->dss_format;
190 info->paddr = plane->paddr + offset;
191 info->screen_width = plane->pitch / format->planes[0].stride_bpp;
193 if (format->dss_format == OMAP_DSS_COLOR_NV12) {
194 plane = &omap_fb->planes[1];
195 offset = plane->offset +
196 (x * format->planes[1].stride_bpp) +
197 (y * plane->pitch / format->planes[1].sub_y);
198 info->p_uv_addr = plane->paddr + offset;
204 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
206 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
207 if (p >= drm_format_num_planes(omap_fb->format->pixel_format))
209 return omap_fb->planes[p].bo;
212 /* iterate thru all the connectors, returning ones that are attached
215 struct drm_connector *omap_framebuffer_get_next_connector(
216 struct drm_framebuffer *fb, struct drm_connector *from)
218 struct drm_device *dev = fb->dev;
219 struct list_head *connector_list = &dev->mode_config.connector_list;
220 struct drm_connector *connector = from;
223 return list_first_entry(connector_list, typeof(*from), head);
226 list_for_each_entry_from(connector, connector_list, head) {
227 if (connector != from) {
228 struct drm_encoder *encoder = connector->encoder;
229 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
230 if (crtc && crtc->fb == fb) {
239 /* flush an area of the framebuffer (in case of manual update display that
240 * is not automatically flushed)
242 void omap_framebuffer_flush(struct drm_framebuffer *fb,
243 int x, int y, int w, int h)
245 struct drm_connector *connector = NULL;
247 VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb);
249 while ((connector = omap_framebuffer_get_next_connector(fb, connector))) {
250 /* only consider connectors that are part of a chain */
251 if (connector->encoder && connector->encoder->crtc) {
252 /* TODO: maybe this should propagate thru the crtc who
253 * could do the coordinate translation..
255 struct drm_crtc *crtc = connector->encoder->crtc;
256 int cx = max(0, x - crtc->x);
257 int cy = max(0, y - crtc->y);
258 int cw = w + (x - crtc->x) - cx;
259 int ch = h + (y - crtc->y) - cy;
261 omap_connector_flush(connector, cx, cy, cw, ch);
266 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
267 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd)
269 struct drm_gem_object *bos[4];
270 struct drm_framebuffer *fb;
273 ret = objects_lookup(dev, file, mode_cmd->pixel_format,
274 bos, mode_cmd->handles);
278 fb = omap_framebuffer_init(dev, mode_cmd, bos);
280 int i, n = drm_format_num_planes(mode_cmd->pixel_format);
281 for (i = 0; i < n; i++)
282 drm_gem_object_unreference_unlocked(bos[i]);
288 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
289 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
291 struct omap_framebuffer *omap_fb;
292 struct drm_framebuffer *fb = NULL;
293 const struct format *format = NULL;
294 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
296 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
297 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
298 (char *)&mode_cmd->pixel_format);
300 for (i = 0; i < ARRAY_SIZE(formats); i++) {
301 if (formats[i].pixel_format == mode_cmd->pixel_format) {
302 format = &formats[i];
308 dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
309 (char *)&mode_cmd->pixel_format);
314 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
316 dev_err(dev->dev, "could not allocate fb\n");
322 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
324 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
328 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
330 omap_fb->format = format;
332 for (i = 0; i < n; i++) {
333 struct plane *plane = &omap_fb->planes[i];
334 int size, pitch = mode_cmd->pitches[i];
336 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
337 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
338 pitch, mode_cmd->width * format->planes[i].stride_bpp);
343 size = pitch * mode_cmd->height / format->planes[i].sub_y;
345 if (size > (bos[i]->size - mode_cmd->offsets[i])) {
346 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
347 bos[i]->size - mode_cmd->offsets[i], size);
353 plane->offset = mode_cmd->offsets[i];
354 plane->pitch = mode_cmd->pitches[i];
355 plane->paddr = pitch;
358 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
364 omap_framebuffer_destroy(fb);