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1/*
2 * drivers/gpu/drm/omapdrm/omap_fb.c
3 *
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
6 *
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.
10 *
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.
15 *
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/>.
18 */
19
20#include <drm/drm_crtc.h>
21#include <drm/drm_crtc_helper.h>
22
23#include "omap_dmm_tiler.h"
24#include "omap_drv.h"
25
26/*
27 * framebuffer funcs
28 */
29
30/* per-format info: */
31struct 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;
39};
40
41static 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 },
61};
62
63/* convert from overlay's pixel formats bitmask to an array of fourcc's */
64uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats,
65 uint32_t max_formats, enum omap_color_mode supported_modes)
66{
67 uint32_t nformats = 0;
68 int i = 0;
69
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;
73
74 return nformats;
75}
76
77/* per-plane info for the fb: */
78struct plane {
79 struct drm_gem_object *bo;
80 uint32_t pitch;
81 uint32_t offset;
82 dma_addr_t paddr;
83};
84
85#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
86
87struct 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;
94};
95
96static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
97 struct drm_file *file_priv,
98 unsigned int *handle)
99{
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);
103}
104
105static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
106{
107 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
108 int i, n = drm_format_num_planes(fb->pixel_format);
109
110 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
111
112 drm_framebuffer_cleanup(fb);
113
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);
118 }
119
120 kfree(omap_fb);
121}
122
123static 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)
126{
127 return 0;
128}
129
130static 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,
134};
135
136static uint32_t get_linear_addr(struct plane *plane,
137 const struct format *format, int n, int x, int y)
138{
139 uint32_t offset;
140
141 offset = plane->offset +
142 (x * format->planes[n].stride_bpp) +
143 (y * plane->pitch / format->planes[n].sub_y);
144
145 return plane->paddr + offset;
146}
147
148bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
149{
150 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
151 struct plane *plane = &omap_fb->planes[0];
152
153 return omap_gem_flags(plane->bo) & OMAP_BO_TILED;
154}
155
156/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
157 */
158void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
159 struct omap_drm_window *win, struct omap_overlay_info *info)
160{
161 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
162 const struct format *format = omap_fb->format;
163 struct plane *plane = &omap_fb->planes[0];
164 uint32_t x, y, orient = 0;
165
166 info->color_mode = format->dss_format;
167
168 info->pos_x = win->crtc_x;
169 info->pos_y = win->crtc_y;
170 info->out_width = win->crtc_w;
171 info->out_height = win->crtc_h;
172 info->width = win->src_w;
173 info->height = win->src_h;
174
175 x = win->src_x;
176 y = win->src_y;
177
178 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) {
179 uint32_t w = win->src_w;
180 uint32_t h = win->src_h;
181
182 switch (win->rotation & DRM_ROTATE_MASK) {
183 default:
184 dev_err(fb->dev->dev, "invalid rotation: %02x",
185 (uint32_t)win->rotation);
186 /* fallthru to default to no rotation */
187 case 0:
188 case BIT(DRM_ROTATE_0):
189 orient = 0;
190 break;
191 case BIT(DRM_ROTATE_90):
192 orient = MASK_XY_FLIP | MASK_X_INVERT;
193 break;
194 case BIT(DRM_ROTATE_180):
195 orient = MASK_X_INVERT | MASK_Y_INVERT;
196 break;
197 case BIT(DRM_ROTATE_270):
198 orient = MASK_XY_FLIP | MASK_Y_INVERT;
199 break;
200 }
201
202 if (win->rotation & BIT(DRM_REFLECT_X))
203 orient ^= MASK_X_INVERT;
204
205 if (win->rotation & BIT(DRM_REFLECT_Y))
206 orient ^= MASK_Y_INVERT;
207
208 /* adjust x,y offset for flip/invert: */
209 if (orient & MASK_XY_FLIP)
210 swap(w, h);
211 if (orient & MASK_Y_INVERT)
212 y += h - 1;
213 if (orient & MASK_X_INVERT)
214 x += w - 1;
215
216 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr);
217 info->rotation_type = OMAP_DSS_ROT_TILER;
218 info->screen_width = omap_gem_tiled_stride(plane->bo, orient);
219 } else {
220 switch (win->rotation & DRM_ROTATE_MASK) {
221 case 0:
222 case BIT(DRM_ROTATE_0):
223 /* OK */
224 break;
225
226 default:
227 dev_warn(fb->dev->dev,
228 "rotation '%d' ignored for non-tiled fb\n",
229 win->rotation);
230 win->rotation = 0;
231 break;
232 }
233
234 info->paddr = get_linear_addr(plane, format, 0, x, y);
235 info->rotation_type = OMAP_DSS_ROT_DMA;
236 info->screen_width = plane->pitch;
237 }
238
239 /* convert to pixels: */
240 info->screen_width /= format->planes[0].stride_bpp;
241
242 if (format->dss_format == OMAP_DSS_COLOR_NV12) {
243 plane = &omap_fb->planes[1];
244
245 if (info->rotation_type == OMAP_DSS_ROT_TILER) {
246 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED));
247 omap_gem_rotated_paddr(plane->bo, orient,
248 x/2, y/2, &info->p_uv_addr);
249 } else {
250 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y);
251 }
252 } else {
253 info->p_uv_addr = 0;
254 }
255}
256
257/* pin, prepare for scanout: */
258int omap_framebuffer_pin(struct drm_framebuffer *fb)
259{
260 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
261 int ret, i, n = drm_format_num_planes(fb->pixel_format);
262
263 mutex_lock(&omap_fb->lock);
264
265 if (omap_fb->pin_count > 0) {
266 omap_fb->pin_count++;
267 mutex_unlock(&omap_fb->lock);
268 return 0;
269 }
270
271 for (i = 0; i < n; i++) {
272 struct plane *plane = &omap_fb->planes[i];
273 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true);
274 if (ret)
275 goto fail;
276 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE);
277 }
278
279 omap_fb->pin_count++;
280
281 mutex_unlock(&omap_fb->lock);
282
283 return 0;
284
285fail:
286 for (i--; i >= 0; i--) {
287 struct plane *plane = &omap_fb->planes[i];
288 omap_gem_put_paddr(plane->bo);
289 plane->paddr = 0;
290 }
291
292 mutex_unlock(&omap_fb->lock);
293
294 return ret;
295}
296
297/* unpin, no longer being scanned out: */
298void omap_framebuffer_unpin(struct drm_framebuffer *fb)
299{
300 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
301 int i, n = drm_format_num_planes(fb->pixel_format);
302
303 mutex_lock(&omap_fb->lock);
304
305 omap_fb->pin_count--;
306
307 if (omap_fb->pin_count > 0) {
308 mutex_unlock(&omap_fb->lock);
309 return;
310 }
311
312 for (i = 0; i < n; i++) {
313 struct plane *plane = &omap_fb->planes[i];
314 omap_gem_put_paddr(plane->bo);
315 plane->paddr = 0;
316 }
317
318 mutex_unlock(&omap_fb->lock);
319}
320
321struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p)
322{
323 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
324 if (p >= drm_format_num_planes(fb->pixel_format))
325 return NULL;
326 return omap_fb->planes[p].bo;
327}
328
329/* iterate thru all the connectors, returning ones that are attached
330 * to the same fb..
331 */
332struct drm_connector *omap_framebuffer_get_next_connector(
333 struct drm_framebuffer *fb, struct drm_connector *from)
334{
335 struct drm_device *dev = fb->dev;
336 struct list_head *connector_list = &dev->mode_config.connector_list;
337 struct drm_connector *connector = from;
338
339 if (!from)
340 return list_first_entry_or_null(connector_list, typeof(*from),
341 head);
342
343 list_for_each_entry_from(connector, connector_list, head) {
344 if (connector != from) {
345 struct drm_encoder *encoder = connector->encoder;
346 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
347 if (crtc && crtc->primary->fb == fb)
348 return connector;
349
350 }
351 }
352
353 return NULL;
354}
355
356#ifdef CONFIG_DEBUG_FS
357void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
358{
359 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
360 int i, n = drm_format_num_planes(fb->pixel_format);
361
362 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
363 (char *)&fb->pixel_format);
364
365 for (i = 0; i < n; i++) {
366 struct plane *plane = &omap_fb->planes[i];
367 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
368 i, plane->offset, plane->pitch);
369 omap_gem_describe(plane->bo, m);
370 }
371}
372#endif
373
374struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
375 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
376{
377 struct drm_gem_object *bos[4];
378 struct drm_framebuffer *fb;
379 int ret;
380
381 ret = objects_lookup(dev, file, mode_cmd->pixel_format,
382 bos, mode_cmd->handles);
383 if (ret)
384 return ERR_PTR(ret);
385
386 fb = omap_framebuffer_init(dev, mode_cmd, bos);
387 if (IS_ERR(fb)) {
388 int i, n = drm_format_num_planes(mode_cmd->pixel_format);
389 for (i = 0; i < n; i++)
390 drm_gem_object_unreference_unlocked(bos[i]);
391 return fb;
392 }
393 return fb;
394}
395
396struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
397 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
398{
399 struct omap_framebuffer *omap_fb = NULL;
400 struct drm_framebuffer *fb = NULL;
401 const struct format *format = NULL;
402 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
403
404 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
405 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
406 (char *)&mode_cmd->pixel_format);
407
408 for (i = 0; i < ARRAY_SIZE(formats); i++) {
409 if (formats[i].pixel_format == mode_cmd->pixel_format) {
410 format = &formats[i];
411 break;
412 }
413 }
414
415 if (!format) {
416 dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
417 (char *)&mode_cmd->pixel_format);
418 ret = -EINVAL;
419 goto fail;
420 }
421
422 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
423 if (!omap_fb) {
424 ret = -ENOMEM;
425 goto fail;
426 }
427
428 fb = &omap_fb->base;
429 omap_fb->format = format;
430 mutex_init(&omap_fb->lock);
431
432 for (i = 0; i < n; i++) {
433 struct plane *plane = &omap_fb->planes[i];
434 int size, pitch = mode_cmd->pitches[i];
435
436 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) {
437 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n",
438 pitch, mode_cmd->width * format->planes[i].stride_bpp);
439 ret = -EINVAL;
440 goto fail;
441 }
442
443 if (pitch % format->planes[i].stride_bpp != 0) {
444 dev_err(dev->dev,
445 "buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n",
446 pitch, format->planes[i].stride_bpp);
447 ret = -EINVAL;
448 goto fail;
449 }
450
451 size = pitch * mode_cmd->height / format->planes[i].sub_y;
452
453 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) {
454 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n",
455 bos[i]->size - mode_cmd->offsets[i], size);
456 ret = -EINVAL;
457 goto fail;
458 }
459
460 if (i > 0 && pitch != mode_cmd->pitches[i - 1]) {
461 dev_err(dev->dev,
462 "pitches are not the same between framebuffer planes %d != %d\n",
463 pitch, mode_cmd->pitches[i - 1]);
464 ret = -EINVAL;
465 goto fail;
466 }
467
468 plane->bo = bos[i];
469 plane->offset = mode_cmd->offsets[i];
470 plane->pitch = pitch;
471 plane->paddr = 0;
472 }
473
474 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
475
476 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
477 if (ret) {
478 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
479 goto fail;
480 }
481
482 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
483
484 return fb;
485
486fail:
487 kfree(omap_fb);
488
489 return ERR_PTR(ret);
490}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Rob Clark <rob@ti.com>
5 */
6
7#include <linux/dma-mapping.h>
8
9#include <drm/drm_modeset_helper.h>
10#include <drm/drm_fourcc.h>
11#include <drm/drm_gem_framebuffer_helper.h>
12
13#include "omap_dmm_tiler.h"
14#include "omap_drv.h"
15
16/*
17 * framebuffer funcs
18 */
19
20static const u32 formats[] = {
21 /* 16bpp [A]RGB: */
22 DRM_FORMAT_RGB565, /* RGB16-565 */
23 DRM_FORMAT_RGBX4444, /* RGB12x-4444 */
24 DRM_FORMAT_XRGB4444, /* xRGB12-4444 */
25 DRM_FORMAT_RGBA4444, /* RGBA12-4444 */
26 DRM_FORMAT_ARGB4444, /* ARGB16-4444 */
27 DRM_FORMAT_XRGB1555, /* xRGB15-1555 */
28 DRM_FORMAT_ARGB1555, /* ARGB16-1555 */
29 /* 24bpp RGB: */
30 DRM_FORMAT_RGB888, /* RGB24-888 */
31 /* 32bpp [A]RGB: */
32 DRM_FORMAT_RGBX8888, /* RGBx24-8888 */
33 DRM_FORMAT_XRGB8888, /* xRGB24-8888 */
34 DRM_FORMAT_RGBA8888, /* RGBA32-8888 */
35 DRM_FORMAT_ARGB8888, /* ARGB32-8888 */
36 /* YUV: */
37 DRM_FORMAT_NV12,
38 DRM_FORMAT_YUYV,
39 DRM_FORMAT_UYVY,
40};
41
42/* per-plane info for the fb: */
43struct plane {
44 dma_addr_t dma_addr;
45};
46
47#define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base)
48
49struct omap_framebuffer {
50 struct drm_framebuffer base;
51 int pin_count;
52 const struct drm_format_info *format;
53 struct plane planes[2];
54 /* lock for pinning (pin_count and planes.dma_addr) */
55 struct mutex lock;
56};
57
58static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
59 struct drm_file *file_priv,
60 unsigned flags, unsigned color,
61 struct drm_clip_rect *clips,
62 unsigned num_clips)
63{
64 struct drm_crtc *crtc;
65
66 drm_modeset_lock_all(fb->dev);
67
68 drm_for_each_crtc(crtc, fb->dev)
69 omap_crtc_flush(crtc);
70
71 drm_modeset_unlock_all(fb->dev);
72
73 return 0;
74}
75
76static const struct drm_framebuffer_funcs omap_framebuffer_funcs = {
77 .create_handle = drm_gem_fb_create_handle,
78 .dirty = omap_framebuffer_dirty,
79 .destroy = drm_gem_fb_destroy,
80};
81
82static u32 get_linear_addr(struct drm_framebuffer *fb,
83 const struct drm_format_info *format, int n, int x, int y)
84{
85 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
86 struct plane *plane = &omap_fb->planes[n];
87 u32 offset;
88
89 offset = fb->offsets[n]
90 + (x * format->cpp[n] / (n == 0 ? 1 : format->hsub))
91 + (y * fb->pitches[n] / (n == 0 ? 1 : format->vsub));
92
93 return plane->dma_addr + offset;
94}
95
96bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
97{
98 return omap_gem_flags(fb->obj[0]) & OMAP_BO_TILED;
99}
100
101/* Note: DRM rotates counter-clockwise, TILER & DSS rotates clockwise */
102static u32 drm_rotation_to_tiler(unsigned int drm_rot)
103{
104 u32 orient;
105
106 switch (drm_rot & DRM_MODE_ROTATE_MASK) {
107 default:
108 case DRM_MODE_ROTATE_0:
109 orient = 0;
110 break;
111 case DRM_MODE_ROTATE_90:
112 orient = MASK_XY_FLIP | MASK_X_INVERT;
113 break;
114 case DRM_MODE_ROTATE_180:
115 orient = MASK_X_INVERT | MASK_Y_INVERT;
116 break;
117 case DRM_MODE_ROTATE_270:
118 orient = MASK_XY_FLIP | MASK_Y_INVERT;
119 break;
120 }
121
122 if (drm_rot & DRM_MODE_REFLECT_X)
123 orient ^= MASK_X_INVERT;
124
125 if (drm_rot & DRM_MODE_REFLECT_Y)
126 orient ^= MASK_Y_INVERT;
127
128 return orient;
129}
130
131/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
132 */
133void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
134 struct drm_plane_state *state, struct omap_overlay_info *info)
135{
136 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
137 const struct drm_format_info *format = omap_fb->format;
138 struct plane *plane = &omap_fb->planes[0];
139 u32 x, y, orient = 0;
140
141 info->fourcc = fb->format->format;
142
143 info->pos_x = state->crtc_x;
144 info->pos_y = state->crtc_y;
145 info->out_width = state->crtc_w;
146 info->out_height = state->crtc_h;
147 info->width = state->src_w >> 16;
148 info->height = state->src_h >> 16;
149
150 /* DSS driver wants the w & h in rotated orientation */
151 if (drm_rotation_90_or_270(state->rotation))
152 swap(info->width, info->height);
153
154 x = state->src_x >> 16;
155 y = state->src_y >> 16;
156
157 if (omap_gem_flags(fb->obj[0]) & OMAP_BO_TILED) {
158 u32 w = state->src_w >> 16;
159 u32 h = state->src_h >> 16;
160
161 orient = drm_rotation_to_tiler(state->rotation);
162
163 /*
164 * omap_gem_rotated_paddr() wants the x & y in tiler units.
165 * Usually tiler unit size is the same as the pixel size, except
166 * for YUV422 formats, for which the tiler unit size is 32 bits
167 * and pixel size is 16 bits.
168 */
169 if (fb->format->format == DRM_FORMAT_UYVY ||
170 fb->format->format == DRM_FORMAT_YUYV) {
171 x /= 2;
172 w /= 2;
173 }
174
175 /* adjust x,y offset for invert: */
176 if (orient & MASK_Y_INVERT)
177 y += h - 1;
178 if (orient & MASK_X_INVERT)
179 x += w - 1;
180
181 /* Note: x and y are in TILER units, not pixels */
182 omap_gem_rotated_dma_addr(fb->obj[0], orient, x, y,
183 &info->paddr);
184 info->rotation_type = OMAP_DSS_ROT_TILER;
185 info->rotation = state->rotation ?: DRM_MODE_ROTATE_0;
186 /* Note: stride in TILER units, not pixels */
187 info->screen_width = omap_gem_tiled_stride(fb->obj[0], orient);
188 } else {
189 switch (state->rotation & DRM_MODE_ROTATE_MASK) {
190 case 0:
191 case DRM_MODE_ROTATE_0:
192 /* OK */
193 break;
194
195 default:
196 dev_warn(fb->dev->dev,
197 "rotation '%d' ignored for non-tiled fb\n",
198 state->rotation);
199 break;
200 }
201
202 info->paddr = get_linear_addr(fb, format, 0, x, y);
203 info->rotation_type = OMAP_DSS_ROT_NONE;
204 info->rotation = DRM_MODE_ROTATE_0;
205 info->screen_width = fb->pitches[0];
206 }
207
208 /* convert to pixels: */
209 info->screen_width /= format->cpp[0];
210
211 if (fb->format->format == DRM_FORMAT_NV12) {
212 plane = &omap_fb->planes[1];
213
214 if (info->rotation_type == OMAP_DSS_ROT_TILER) {
215 WARN_ON(!(omap_gem_flags(fb->obj[1]) & OMAP_BO_TILED));
216 omap_gem_rotated_dma_addr(fb->obj[1], orient, x/2, y/2,
217 &info->p_uv_addr);
218 } else {
219 info->p_uv_addr = get_linear_addr(fb, format, 1, x, y);
220 }
221 } else {
222 info->p_uv_addr = 0;
223 }
224}
225
226/* pin, prepare for scanout: */
227int omap_framebuffer_pin(struct drm_framebuffer *fb)
228{
229 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
230 int ret, i, n = fb->format->num_planes;
231
232 mutex_lock(&omap_fb->lock);
233
234 if (omap_fb->pin_count > 0) {
235 omap_fb->pin_count++;
236 mutex_unlock(&omap_fb->lock);
237 return 0;
238 }
239
240 for (i = 0; i < n; i++) {
241 struct plane *plane = &omap_fb->planes[i];
242 ret = omap_gem_pin(fb->obj[i], &plane->dma_addr);
243 if (ret)
244 goto fail;
245 omap_gem_dma_sync_buffer(fb->obj[i], DMA_TO_DEVICE);
246 }
247
248 omap_fb->pin_count++;
249
250 mutex_unlock(&omap_fb->lock);
251
252 return 0;
253
254fail:
255 for (i--; i >= 0; i--) {
256 struct plane *plane = &omap_fb->planes[i];
257 omap_gem_unpin(fb->obj[i]);
258 plane->dma_addr = 0;
259 }
260
261 mutex_unlock(&omap_fb->lock);
262
263 return ret;
264}
265
266/* unpin, no longer being scanned out: */
267void omap_framebuffer_unpin(struct drm_framebuffer *fb)
268{
269 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
270 int i, n = fb->format->num_planes;
271
272 mutex_lock(&omap_fb->lock);
273
274 omap_fb->pin_count--;
275
276 if (omap_fb->pin_count > 0) {
277 mutex_unlock(&omap_fb->lock);
278 return;
279 }
280
281 for (i = 0; i < n; i++) {
282 struct plane *plane = &omap_fb->planes[i];
283 omap_gem_unpin(fb->obj[i]);
284 plane->dma_addr = 0;
285 }
286
287 mutex_unlock(&omap_fb->lock);
288}
289
290#ifdef CONFIG_DEBUG_FS
291void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
292{
293 int i, n = fb->format->num_planes;
294
295 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
296 (char *)&fb->format->format);
297
298 for (i = 0; i < n; i++) {
299 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
300 i, fb->offsets[n], fb->pitches[i]);
301 omap_gem_describe(fb->obj[i], m);
302 }
303}
304#endif
305
306struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
307 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
308{
309 const struct drm_format_info *info = drm_get_format_info(dev,
310 mode_cmd);
311 unsigned int num_planes = info->num_planes;
312 struct drm_gem_object *bos[4];
313 struct drm_framebuffer *fb;
314 int i;
315
316 for (i = 0; i < num_planes; i++) {
317 bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
318 if (!bos[i]) {
319 fb = ERR_PTR(-ENOENT);
320 goto error;
321 }
322 }
323
324 fb = omap_framebuffer_init(dev, mode_cmd, bos);
325 if (IS_ERR(fb))
326 goto error;
327
328 return fb;
329
330error:
331 while (--i >= 0)
332 drm_gem_object_put_unlocked(bos[i]);
333
334 return fb;
335}
336
337struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
338 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
339{
340 const struct drm_format_info *format = NULL;
341 struct omap_framebuffer *omap_fb = NULL;
342 struct drm_framebuffer *fb = NULL;
343 unsigned int pitch = mode_cmd->pitches[0];
344 int ret, i;
345
346 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
347 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
348 (char *)&mode_cmd->pixel_format);
349
350 format = drm_get_format_info(dev, mode_cmd);
351
352 for (i = 0; i < ARRAY_SIZE(formats); i++) {
353 if (formats[i] == mode_cmd->pixel_format)
354 break;
355 }
356
357 if (!format || i == ARRAY_SIZE(formats)) {
358 dev_dbg(dev->dev, "unsupported pixel format: %4.4s\n",
359 (char *)&mode_cmd->pixel_format);
360 ret = -EINVAL;
361 goto fail;
362 }
363
364 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL);
365 if (!omap_fb) {
366 ret = -ENOMEM;
367 goto fail;
368 }
369
370 fb = &omap_fb->base;
371 omap_fb->format = format;
372 mutex_init(&omap_fb->lock);
373
374 /*
375 * The code below assumes that no format use more than two planes, and
376 * that the two planes of multiplane formats need the same number of
377 * bytes per pixel.
378 */
379 if (format->num_planes == 2 && pitch != mode_cmd->pitches[1]) {
380 dev_dbg(dev->dev, "pitches differ between planes 0 and 1\n");
381 ret = -EINVAL;
382 goto fail;
383 }
384
385 if (pitch % format->cpp[0]) {
386 dev_dbg(dev->dev,
387 "buffer pitch (%u bytes) is not a multiple of pixel size (%u bytes)\n",
388 pitch, format->cpp[0]);
389 ret = -EINVAL;
390 goto fail;
391 }
392
393 for (i = 0; i < format->num_planes; i++) {
394 struct plane *plane = &omap_fb->planes[i];
395 unsigned int vsub = i == 0 ? 1 : format->vsub;
396 unsigned int size;
397
398 size = pitch * mode_cmd->height / vsub;
399
400 if (size > omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i]) {
401 dev_dbg(dev->dev,
402 "provided buffer object is too small! %zu < %d\n",
403 bos[i]->size - mode_cmd->offsets[i], size);
404 ret = -EINVAL;
405 goto fail;
406 }
407
408 fb->obj[i] = bos[i];
409 plane->dma_addr = 0;
410 }
411
412 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
413
414 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs);
415 if (ret) {
416 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
417 goto fail;
418 }
419
420 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
421
422 return fb;
423
424fail:
425 kfree(omap_fb);
426
427 return ERR_PTR(ret);
428}