Linux 4.2.1
[linux/fpc-iii.git] / drivers / gpu / drm / omapdrm / omap_fb.c
blob51b1219af87f1b29fbbe641fa2fbfd51b5c3b92d
1 /*
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
14 * more details.
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 <drm/drm_crtc.h>
21 #include <drm/drm_crtc_helper.h>
23 #include "omap_dmm_tiler.h"
24 #include "omap_drv.h"
27 * framebuffer funcs
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;
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 },
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;
68 int i = 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;
74 return nformats;
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;
85 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
87 struct omap_framebuffer {
88 struct drm_framebuffer base;
89 int pin_count;
90 const struct format *format;
91 struct plane planes[4];
92 /* lock for pinning (pin_count and planes.paddr) */
93 struct mutex lock;
96 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
97 struct drm_file *file_priv,
98 unsigned int *handle)
100 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
101 return drm_gem_handle_create(file_priv,
102 omap_fb->planes[0].bo, handle);
105 static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
107 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
108 int i, n = drm_format_num_planes(fb->pixel_format);
110 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
112 drm_framebuffer_cleanup(fb);
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);
120 kfree(omap_fb);
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)
127 return 0;
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,
136 static uint32_t get_linear_addr(struct plane *plane,
137 const struct format *format, int n, int x, int y)
139 uint32_t offset;
141 offset = plane->offset +
142 (x * format->planes[n].stride_bpp) +
143 (y * plane->pitch / format->planes[n].sub_y);
145 return plane->paddr + offset;
148 /* update ovl info for scanout, handles cases of multi-planar fb's, etc.
150 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
151 struct omap_drm_window *win, struct omap_overlay_info *info)
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];
156 uint32_t x, y, orient = 0;
158 info->color_mode = format->dss_format;
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;
167 x = win->src_x;
168 y = win->src_y;
170 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
171 uint32_t w = win->src_w;
172 uint32_t h = win->src_h;
174 switch (win->rotation & 0xf) {
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;
194 if (win->rotation & BIT(DRM_REFLECT_X))
195 orient ^= MASK_X_INVERT;
197 if (win->rotation & BIT(DRM_REFLECT_Y))
198 orient ^= MASK_Y_INVERT;
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;
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 {
212 switch (win->rotation & 0xf) {
213 case 0:
214 case BIT(DRM_ROTATE_0):
215 /* OK */
216 break;
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;
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;
231 /* convert to pixels: */
232 info->screen_width /= format->planes[0].stride_bpp;
234 if (format->dss_format == OMAP_DSS_COLOR_NV12) {
235 plane = &omap_fb->planes[1];
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);
244 } else {
245 info->p_uv_addr = 0;
249 /* pin, prepare for scanout: */
250 int omap_framebuffer_pin(struct drm_framebuffer *fb)
252 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
253 int ret, i, n = drm_format_num_planes(fb->pixel_format);
255 mutex_lock(&omap_fb->lock);
257 if (omap_fb->pin_count > 0) {
258 omap_fb->pin_count++;
259 mutex_unlock(&omap_fb->lock);
260 return 0;
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);
271 omap_fb->pin_count++;
273 mutex_unlock(&omap_fb->lock);
275 return 0;
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;
284 mutex_unlock(&omap_fb->lock);
286 return ret;
289 /* unpin, no longer being scanned out: */
290 void omap_framebuffer_unpin(struct drm_framebuffer *fb)
292 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
293 int i, n = drm_format_num_planes(fb->pixel_format);
295 mutex_lock(&omap_fb->lock);
297 omap_fb->pin_count--;
299 if (omap_fb->pin_count > 0) {
300 mutex_unlock(&omap_fb->lock);
301 return;
304 for (i = 0; i < n; i++) {
305 struct plane *plane = &omap_fb->planes[i];
306 omap_gem_put_paddr(plane->bo);
307 plane->paddr = 0;
310 mutex_unlock(&omap_fb->lock);
313 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
315 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
316 if (p >= drm_format_num_planes(fb->pixel_format))
317 return NULL;
318 return omap_fb->planes[p].bo;
321 /* iterate thru all the connectors, returning ones that are attached
322 * to the same fb..
324 struct drm_connector *omap_framebuffer_get_next_connector(
325 struct drm_framebuffer *fb, struct drm_connector *from)
327 struct drm_device *dev = fb->dev;
328 struct list_head *connector_list = &dev->mode_config.connector_list;
329 struct drm_connector *connector = from;
331 if (!from)
332 return list_first_entry_or_null(connector_list, typeof(*from),
333 head);
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;
339 if (crtc && crtc->primary->fb == fb)
340 return connector;
345 return NULL;
348 #ifdef CONFIG_DEBUG_FS
349 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
351 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
352 int i, n = drm_format_num_planes(fb->pixel_format);
354 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
355 (char *)&fb->pixel_format);
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);
364 #endif
366 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
367 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd)
369 struct drm_gem_object *bos[4];
370 struct drm_framebuffer *fb;
371 int ret;
373 ret = objects_lookup(dev, file, mode_cmd->pixel_format,
374 bos, mode_cmd->handles);
375 if (ret)
376 return ERR_PTR(ret);
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;
385 return fb;
388 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
389 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
391 struct omap_framebuffer *omap_fb = NULL;
392 struct drm_framebuffer *fb = NULL;
393 const struct format *format = NULL;
394 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
396 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
397 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
398 (char *)&mode_cmd->pixel_format);
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;
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;
414 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
415 if (!omap_fb) {
416 ret = -ENOMEM;
417 goto fail;
420 fb = &omap_fb->base;
421 omap_fb->format = format;
422 mutex_init(&omap_fb->lock);
424 for (i = 0; i < n; i++) {
425 struct plane *plane = &omap_fb->planes[i];
426 int size, pitch = mode_cmd->pitches[i];
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;
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;
443 size = pitch * mode_cmd->height / format->planes[i].sub_y;
445 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
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;
452 plane->bo = bos[i];
453 plane->offset = mode_cmd->offsets[i];
454 plane->pitch = pitch;
455 plane->paddr = 0;
458 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
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;
466 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
468 return fb;
470 fail:
471 kfree(omap_fb);
473 return ERR_PTR(ret);