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 /* per-format info: */
34 enum omap_color_mode dss_format;
35 uint32_t pixel_format;
37 int stride_bpp; /* this times width is stride */
38 int sub_y; /* sub-sample in y dimension */
43 static const struct format formats[] = {
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 */
53 { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */
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 */
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 },
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)
69 uint32_t nformats = 0;
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;
79 /* per-plane info for the fb: */
81 struct drm_gem_object *bo;
87 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
89 struct omap_framebuffer {
90 struct drm_framebuffer base;
92 const struct format *format;
93 struct plane planes[4];
94 /* lock for pinning (pin_count and planes.paddr) */
98 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
99 struct drm_file *file_priv,
100 unsigned int *handle)
102 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
103 return drm_gem_handle_create(file_priv,
104 omap_fb->planes[0].bo, handle);
107 static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
109 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
110 int i, n = drm_format_num_planes(fb->pixel_format);
112 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
114 drm_framebuffer_cleanup(fb);
116 for (i = 0; i < n; i++) {
117 struct plane *plane = &omap_fb->planes[i];
119 drm_gem_object_unreference_unlocked(plane->bo);
125 static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
126 struct drm_file *file_priv, unsigned flags, unsigned color,
127 struct drm_clip_rect *clips, unsigned num_clips)
132 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
133 .create_handle = omap_framebuffer_create_handle,
134 .destroy = omap_framebuffer_destroy,
135 .dirty = omap_framebuffer_dirty,
138 static uint32_t get_linear_addr(struct plane *plane,
139 const struct format *format, int n, int x, int y)
143 offset = plane->offset +
144 (x * format->planes[n].stride_bpp) +
145 (y * plane->pitch / format->planes[n].sub_y);
147 return plane->paddr + offset;
150 bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
152 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
153 struct plane *plane = &omap_fb->planes[0];
155 return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
158 /* update ovl info for scanout, handles cases of multi-planar fb's, etc.
160 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
161 struct omap_drm_window *win, struct omap_overlay_info *info)
163 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
164 const struct format *format = omap_fb->format;
165 struct plane *plane = &omap_fb->planes[0];
166 uint32_t x, y, orient = 0;
168 info->color_mode = format->dss_format;
170 info->pos_x = win->crtc_x;
171 info->pos_y = win->crtc_y;
172 info->out_width = win->crtc_w;
173 info->out_height = win->crtc_h;
174 info->width = win->src_w;
175 info->height = win->src_h;
180 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
181 uint32_t w = win->src_w;
182 uint32_t h = win->src_h;
184 switch (win->rotation & DRM_ROTATE_MASK) {
186 dev_err(fb->dev->dev, "invalid rotation: %02x",
187 (uint32_t)win->rotation);
188 /* fallthru to default to no rotation */
190 case BIT(DRM_ROTATE_0):
193 case BIT(DRM_ROTATE_90):
194 orient = MASK_XY_FLIP | MASK_X_INVERT;
196 case BIT(DRM_ROTATE_180):
197 orient = MASK_X_INVERT | MASK_Y_INVERT;
199 case BIT(DRM_ROTATE_270):
200 orient = MASK_XY_FLIP | MASK_Y_INVERT;
204 if (win->rotation & BIT(DRM_REFLECT_X))
205 orient ^= MASK_X_INVERT;
207 if (win->rotation & BIT(DRM_REFLECT_Y))
208 orient ^= MASK_Y_INVERT;
210 /* adjust x,y offset for flip/invert: */
211 if (orient & MASK_XY_FLIP)
213 if (orient & MASK_Y_INVERT)
215 if (orient & MASK_X_INVERT)
218 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
219 info->rotation_type = OMAP_DSS_ROT_TILER;
220 info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
222 switch (win->rotation & DRM_ROTATE_MASK) {
224 case BIT(DRM_ROTATE_0):
229 dev_warn(fb->dev->dev,
230 "rotation '%d' ignored for non-tiled fb\n",
236 info->paddr = get_linear_addr(plane, format, 0, x, y);
237 info->rotation_type = OMAP_DSS_ROT_DMA;
238 info->screen_width = plane->pitch;
241 /* convert to pixels: */
242 info->screen_width /= format->planes[0].stride_bpp;
244 if (format->dss_format == OMAP_DSS_COLOR_NV12) {
245 plane = &omap_fb->planes[1];
247 if (info->rotation_type == OMAP_DSS_ROT_TILER) {
248 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
249 omap_gem_rotated_paddr(plane->bo, orient,
250 x/2, y/2, &info->p_uv_addr);
252 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
259 /* pin, prepare for scanout: */
260 int omap_framebuffer_pin(struct drm_framebuffer *fb)
262 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
263 int ret, i, n = drm_format_num_planes(fb->pixel_format);
265 mutex_lock(&omap_fb->lock);
267 if (omap_fb->pin_count > 0) {
268 omap_fb->pin_count++;
269 mutex_unlock(&omap_fb->lock);
273 for (i = 0; i < n; i++) {
274 struct plane *plane = &omap_fb->planes[i];
275 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
278 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
281 omap_fb->pin_count++;
283 mutex_unlock(&omap_fb->lock);
288 for (i--; i >= 0; i--) {
289 struct plane *plane = &omap_fb->planes[i];
290 omap_gem_put_paddr(plane->bo);
294 mutex_unlock(&omap_fb->lock);
299 /* unpin, no longer being scanned out: */
300 void omap_framebuffer_unpin(struct drm_framebuffer *fb)
302 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
303 int i, n = drm_format_num_planes(fb->pixel_format);
305 mutex_lock(&omap_fb->lock);
307 omap_fb->pin_count--;
309 if (omap_fb->pin_count > 0) {
310 mutex_unlock(&omap_fb->lock);
314 for (i = 0; i < n; i++) {
315 struct plane *plane = &omap_fb->planes[i];
316 omap_gem_put_paddr(plane->bo);
320 mutex_unlock(&omap_fb->lock);
323 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
325 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
326 if (p >= drm_format_num_planes(fb->pixel_format))
328 return omap_fb->planes[p].bo;
331 /* iterate thru all the connectors, returning ones that are attached
334 struct drm_connector *omap_framebuffer_get_next_connector(
335 struct drm_framebuffer *fb, struct drm_connector *from)
337 struct drm_device *dev = fb->dev;
338 struct list_head *connector_list = &dev->mode_config.connector_list;
339 struct drm_connector *connector = from;
342 return list_first_entry_or_null(connector_list, typeof(*from),
345 list_for_each_entry_from(connector, connector_list, head) {
346 if (connector != from) {
347 struct drm_encoder *encoder = connector->encoder;
348 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
349 if (crtc && crtc->primary->fb == fb)
358 #ifdef CONFIG_DEBUG_FS
359 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
361 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
362 int i, n = drm_format_num_planes(fb->pixel_format);
364 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
365 (char *)&fb->pixel_format);
367 for (i = 0; i < n; i++) {
368 struct plane *plane = &omap_fb->planes[i];
369 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
370 i, plane->offset, plane->pitch);
371 omap_gem_describe(plane->bo, m);
376 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
377 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
379 struct drm_gem_object *bos[4];
380 struct drm_framebuffer *fb;
383 ret = objects_lookup(file, mode_cmd->pixel_format,
384 bos, mode_cmd->handles);
388 fb = omap_framebuffer_init(dev, mode_cmd, bos);
390 int i, n = drm_format_num_planes(mode_cmd->pixel_format);
391 for (i = 0; i < n; i++)
392 drm_gem_object_unreference_unlocked(bos[i]);
398 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
399 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
401 struct omap_framebuffer *omap_fb = NULL;
402 struct drm_framebuffer *fb = NULL;
403 const struct format *format = NULL;
404 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
406 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
407 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
408 (char *)&mode_cmd->pixel_format);
410 for (i = 0; i < ARRAY_SIZE(formats); i++) {
411 if (formats[i].pixel_format == mode_cmd->pixel_format) {
412 format = &formats[i];
418 dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
419 (char *)&mode_cmd->pixel_format);
424 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
431 omap_fb->format = format;
432 mutex_init(&omap_fb->lock);
434 for (i = 0; i < n; i++) {
435 struct plane *plane = &omap_fb->planes[i];
436 int size, pitch = mode_cmd->pitches[i];
438 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
439 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
440 pitch, mode_cmd->width * format->planes[i].stride_bpp);
445 if (pitch % format->planes[i].stride_bpp != 0) {
447 "buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n",
448 pitch, format->planes[i].stride_bpp);
453 size = pitch * mode_cmd->height / format->planes[i].sub_y;
455 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
456 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
457 bos[i]->size - mode_cmd->offsets[i], size);
462 if (i > 0 && pitch != mode_cmd->pitches[i - 1]) {
464 "pitches are not the same between framebuffer planes %d != %d\n",
465 pitch, mode_cmd->pitches[i - 1]);
471 plane->offset = mode_cmd->offsets[i];
472 plane->pitch = pitch;
476 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
478 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
480 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
484 DBG("create: FB ID: %d (%p)", fb->base.id, fb);