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/>.
20 #include <linux/seq_file.h>
22 #include <drm/drm_crtc.h>
23 #include <drm/drm_crtc_helper.h>
25 #include "omap_dmm_tiler.h"
32 /* DSS to DRM formats mapping */
34 enum omap_color_mode dss_format;
35 uint32_t pixel_format;
38 { OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565 }, /* RGB16-565 */
39 { OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444 }, /* RGB12x-4444 */
40 { OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444 }, /* xRGB12-4444 */
41 { OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444 }, /* RGBA12-4444 */
42 { OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444 }, /* ARGB16-4444 */
43 { OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555 }, /* xRGB15-1555 */
44 { OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555 }, /* ARGB16-1555 */
46 { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888 }, /* RGB24-888 */
48 { OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888 }, /* RGBx24-8888 */
49 { OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888 }, /* xRGB24-8888 */
50 { OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888 }, /* RGBA32-8888 */
51 { OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888 }, /* ARGB32-8888 */
53 { OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12 },
54 { OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV },
55 { OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY },
58 /* convert from overlay's pixel formats bitmask to an array of fourcc's */
59 uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
60 uint32_t max_formats, enum omap_color_mode supported_modes)
62 uint32_t nformats = 0;
65 for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++)
66 if (formats[i].dss_format & supported_modes)
67 pixel_formats[nformats++] = formats[i].pixel_format;
72 /* per-plane info for the fb: */
74 struct drm_gem_object *bo;
80 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
82 struct omap_framebuffer {
83 struct drm_framebuffer base;
85 const struct drm_format_info *format;
86 enum omap_color_mode dss_format;
87 struct plane planes[2];
88 /* lock for pinning (pin_count and planes.paddr) */
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 = fb->format->num_planes;
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 const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
120 .create_handle = omap_framebuffer_create_handle,
121 .destroy = omap_framebuffer_destroy,
124 static uint32_t get_linear_addr(struct plane *plane,
125 const struct drm_format_info *format, int n, int x, int y)
129 offset = plane->offset
130 + (x * format->cpp[n] / (n == 0 ? 1 : format->hsub))
131 + (y * plane->pitch / (n == 0 ? 1 : format->vsub));
133 return plane->paddr + offset;
136 bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
138 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
139 struct plane *plane = &omap_fb->planes[0];
141 return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
144 /* update ovl info for scanout, handles cases of multi-planar fb's, etc.
146 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
147 struct omap_drm_window *win, struct omap_overlay_info *info)
149 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
150 const struct drm_format_info *format = omap_fb->format;
151 struct plane *plane = &omap_fb->planes[0];
152 uint32_t x, y, orient = 0;
154 info->color_mode = omap_fb->dss_format;
156 info->pos_x = win->crtc_x;
157 info->pos_y = win->crtc_y;
158 info->out_width = win->crtc_w;
159 info->out_height = win->crtc_h;
160 info->width = win->src_w;
161 info->height = win->src_h;
166 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
167 uint32_t w = win->src_w;
168 uint32_t h = win->src_h;
170 switch (win->rotation & DRM_ROTATE_MASK) {
172 dev_err(fb->dev->dev, "invalid rotation: %02x",
173 (uint32_t)win->rotation);
174 /* fallthru to default to no rotation */
180 orient = MASK_XY_FLIP | MASK_X_INVERT;
183 orient = MASK_X_INVERT | MASK_Y_INVERT;
186 orient = MASK_XY_FLIP | MASK_Y_INVERT;
190 if (win->rotation & DRM_REFLECT_X)
191 orient ^= MASK_X_INVERT;
193 if (win->rotation & DRM_REFLECT_Y)
194 orient ^= MASK_Y_INVERT;
196 /* adjust x,y offset for flip/invert: */
197 if (orient & MASK_XY_FLIP)
199 if (orient & MASK_Y_INVERT)
201 if (orient & MASK_X_INVERT)
204 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
205 info->rotation_type = OMAP_DSS_ROT_TILER;
206 info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
208 switch (win->rotation & DRM_ROTATE_MASK) {
215 dev_warn(fb->dev->dev,
216 "rotation '%d' ignored for non-tiled fb\n",
222 info->paddr = get_linear_addr(plane, format, 0, x, y);
223 info->rotation_type = OMAP_DSS_ROT_DMA;
224 info->screen_width = plane->pitch;
227 /* convert to pixels: */
228 info->screen_width /= format->cpp[0];
230 if (omap_fb->dss_format == OMAP_DSS_COLOR_NV12) {
231 plane = &omap_fb->planes[1];
233 if (info->rotation_type == OMAP_DSS_ROT_TILER) {
234 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
235 omap_gem_rotated_paddr(plane->bo, orient,
236 x/2, y/2, &info->p_uv_addr);
238 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
245 /* pin, prepare for scanout: */
246 int omap_framebuffer_pin(struct drm_framebuffer *fb)
248 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
249 int ret, i, n = fb->format->num_planes;
251 mutex_lock(&omap_fb->lock);
253 if (omap_fb->pin_count > 0) {
254 omap_fb->pin_count++;
255 mutex_unlock(&omap_fb->lock);
259 for (i = 0; i < n; i++) {
260 struct plane *plane = &omap_fb->planes[i];
261 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
264 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
267 omap_fb->pin_count++;
269 mutex_unlock(&omap_fb->lock);
274 for (i--; i >= 0; i--) {
275 struct plane *plane = &omap_fb->planes[i];
276 omap_gem_put_paddr(plane->bo);
280 mutex_unlock(&omap_fb->lock);
285 /* unpin, no longer being scanned out: */
286 void omap_framebuffer_unpin(struct drm_framebuffer *fb)
288 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
289 int i, n = fb->format->num_planes;
291 mutex_lock(&omap_fb->lock);
293 omap_fb->pin_count--;
295 if (omap_fb->pin_count > 0) {
296 mutex_unlock(&omap_fb->lock);
300 for (i = 0; i < n; i++) {
301 struct plane *plane = &omap_fb->planes[i];
302 omap_gem_put_paddr(plane->bo);
306 mutex_unlock(&omap_fb->lock);
309 /* iterate thru all the connectors, returning ones that are attached
312 struct drm_connector *omap_framebuffer_get_next_connector(
313 struct drm_framebuffer *fb, struct drm_connector *from)
315 struct drm_device *dev = fb->dev;
316 struct list_head *connector_list = &dev->mode_config.connector_list;
317 struct drm_connector *connector = from;
320 return list_first_entry_or_null(connector_list, typeof(*from),
323 list_for_each_entry_from(connector, connector_list, head) {
324 if (connector != from) {
325 struct drm_encoder *encoder = connector->encoder;
326 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
327 if (crtc && crtc->primary->fb == fb)
336 #ifdef CONFIG_DEBUG_FS
337 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
339 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
340 int i, n = fb->format->num_planes;
342 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
343 (char *)&fb->format->format);
345 for (i = 0; i < n; i++) {
346 struct plane *plane = &omap_fb->planes[i];
347 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
348 i, plane->offset, plane->pitch);
349 omap_gem_describe(plane->bo, m);
354 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
355 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
357 unsigned int num_planes = drm_format_num_planes(mode_cmd->pixel_format);
358 struct drm_gem_object *bos[4];
359 struct drm_framebuffer *fb;
362 for (i = 0; i < num_planes; i++) {
363 bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
365 fb = ERR_PTR(-ENOENT);
370 fb = omap_framebuffer_init(dev, mode_cmd, bos);
378 drm_gem_object_unreference_unlocked(bos[i]);
383 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
384 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
386 const struct drm_format_info *format = NULL;
387 struct omap_framebuffer *omap_fb = NULL;
388 struct drm_framebuffer *fb = NULL;
389 enum omap_color_mode dss_format = 0;
390 unsigned int pitch = mode_cmd->pitches[0];
393 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
394 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
395 (char *)&mode_cmd->pixel_format);
397 format = drm_format_info(mode_cmd->pixel_format);
399 for (i = 0; i < ARRAY_SIZE(formats); i++) {
400 if (formats[i].pixel_format == mode_cmd->pixel_format) {
401 dss_format = formats[i].dss_format;
406 if (!format || !dss_format) {
407 dev_dbg(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;
421 omap_fb->dss_format = dss_format;
422 mutex_init(&omap_fb->lock);
425 * The code below assumes that no format use more than two planes, and
426 * that the two planes of multiplane formats need the same number of
429 if (format->num_planes == 2 && pitch != mode_cmd->pitches[1]) {
430 dev_dbg(dev->dev, "pitches differ between planes 0 and 1\n");
435 if (pitch % format->cpp[0]) {
437 "buffer pitch (%u bytes) is not a multiple of pixel size (%u bytes)\n",
438 pitch, format->cpp[0]);
443 for (i = 0; i < format->num_planes; i++) {
444 struct plane *plane = &omap_fb->planes[i];
445 unsigned int vsub = i == 0 ? 1 : format->vsub;
448 size = pitch * mode_cmd->height / vsub;
450 if (size > omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i]) {
452 "provided buffer object is too small! %d < %d\n",
453 bos[i]->size - mode_cmd->offsets[i], size);
459 plane->offset = mode_cmd->offsets[i];
460 plane->pitch = pitch;
464 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
466 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
468 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
472 DBG("create: FB ID: %d (%p)", fb->base.id, fb);