Commit | Line | Data |
---|---|---|
4bf8e196 LP |
1 | /* |
2 | * rcar_du_kms.c -- R-Car Display Unit Mode Setting | |
3 | * | |
36d50464 | 4 | * Copyright (C) 2013-2014 Renesas Electronics Corporation |
4bf8e196 LP |
5 | * |
6 | * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #include <drm/drmP.h> | |
8d3f9b22 | 15 | #include <drm/drm_atomic.h> |
336d04a1 | 16 | #include <drm/drm_atomic_helper.h> |
4bf8e196 LP |
17 | #include <drm/drm_crtc.h> |
18 | #include <drm/drm_crtc_helper.h> | |
19 | #include <drm/drm_fb_cma_helper.h> | |
20 | #include <drm/drm_gem_cma_helper.h> | |
21 | ||
96c02691 | 22 | #include <linux/of_graph.h> |
8d3f9b22 | 23 | #include <linux/wait.h> |
96c02691 | 24 | |
4bf8e196 LP |
25 | #include "rcar_du_crtc.h" |
26 | #include "rcar_du_drv.h" | |
6978f123 | 27 | #include "rcar_du_encoder.h" |
4bf8e196 | 28 | #include "rcar_du_kms.h" |
90374b5c | 29 | #include "rcar_du_lvdsenc.h" |
4bf8e196 | 30 | #include "rcar_du_regs.h" |
4bf8e196 LP |
31 | |
32 | /* ----------------------------------------------------------------------------- | |
33 | * Format helpers | |
34 | */ | |
35 | ||
36 | static const struct rcar_du_format_info rcar_du_format_infos[] = { | |
37 | { | |
38 | .fourcc = DRM_FORMAT_RGB565, | |
39 | .bpp = 16, | |
40 | .planes = 1, | |
41 | .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, | |
42 | .edf = PnDDCR4_EDF_NONE, | |
43 | }, { | |
44 | .fourcc = DRM_FORMAT_ARGB1555, | |
45 | .bpp = 16, | |
46 | .planes = 1, | |
47 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, | |
48 | .edf = PnDDCR4_EDF_NONE, | |
49 | }, { | |
50 | .fourcc = DRM_FORMAT_XRGB1555, | |
51 | .bpp = 16, | |
52 | .planes = 1, | |
53 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_ARGB, | |
54 | .edf = PnDDCR4_EDF_NONE, | |
55 | }, { | |
56 | .fourcc = DRM_FORMAT_XRGB8888, | |
57 | .bpp = 32, | |
58 | .planes = 1, | |
59 | .pnmr = PnMR_SPIM_TP | PnMR_DDDF_16BPP, | |
60 | .edf = PnDDCR4_EDF_RGB888, | |
61 | }, { | |
62 | .fourcc = DRM_FORMAT_ARGB8888, | |
63 | .bpp = 32, | |
64 | .planes = 1, | |
65 | .pnmr = PnMR_SPIM_ALP | PnMR_DDDF_16BPP, | |
66 | .edf = PnDDCR4_EDF_ARGB8888, | |
67 | }, { | |
68 | .fourcc = DRM_FORMAT_UYVY, | |
69 | .bpp = 16, | |
70 | .planes = 1, | |
71 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
72 | .edf = PnDDCR4_EDF_NONE, | |
73 | }, { | |
74 | .fourcc = DRM_FORMAT_YUYV, | |
75 | .bpp = 16, | |
76 | .planes = 1, | |
77 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
78 | .edf = PnDDCR4_EDF_NONE, | |
79 | }, { | |
80 | .fourcc = DRM_FORMAT_NV12, | |
81 | .bpp = 12, | |
82 | .planes = 2, | |
83 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
84 | .edf = PnDDCR4_EDF_NONE, | |
85 | }, { | |
86 | .fourcc = DRM_FORMAT_NV21, | |
87 | .bpp = 12, | |
88 | .planes = 2, | |
89 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
90 | .edf = PnDDCR4_EDF_NONE, | |
91 | }, { | |
92 | /* In YUV 4:2:2, only NV16 is supported (NV61 isn't) */ | |
93 | .fourcc = DRM_FORMAT_NV16, | |
94 | .bpp = 16, | |
95 | .planes = 2, | |
96 | .pnmr = PnMR_SPIM_TP_OFF | PnMR_DDDF_YC, | |
97 | .edf = PnDDCR4_EDF_NONE, | |
98 | }, | |
99 | }; | |
100 | ||
101 | const struct rcar_du_format_info *rcar_du_format_info(u32 fourcc) | |
102 | { | |
103 | unsigned int i; | |
104 | ||
105 | for (i = 0; i < ARRAY_SIZE(rcar_du_format_infos); ++i) { | |
106 | if (rcar_du_format_infos[i].fourcc == fourcc) | |
107 | return &rcar_du_format_infos[i]; | |
108 | } | |
109 | ||
110 | return NULL; | |
111 | } | |
112 | ||
4bf8e196 LP |
113 | /* ----------------------------------------------------------------------------- |
114 | * Frame buffer | |
115 | */ | |
116 | ||
59e32642 LP |
117 | int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev, |
118 | struct drm_mode_create_dumb *args) | |
119 | { | |
9e2d2de9 | 120 | struct rcar_du_device *rcdu = dev->dev_private; |
59e32642 LP |
121 | unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); |
122 | unsigned int align; | |
123 | ||
9e2d2de9 LP |
124 | /* The R8A7779 DU requires a 16 pixels pitch alignment as documented, |
125 | * but the R8A7790 DU seems to require a 128 bytes pitch alignment. | |
126 | */ | |
e8355e0d | 127 | if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) |
9e2d2de9 LP |
128 | align = 128; |
129 | else | |
130 | align = 16 * args->bpp / 8; | |
131 | ||
7e295a36 | 132 | args->pitch = roundup(min_pitch, align); |
59e32642 | 133 | |
6d178291 | 134 | return drm_gem_cma_dumb_create_internal(file, dev, args); |
59e32642 LP |
135 | } |
136 | ||
4bf8e196 LP |
137 | static struct drm_framebuffer * |
138 | rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
139 | struct drm_mode_fb_cmd2 *mode_cmd) | |
140 | { | |
9e2d2de9 | 141 | struct rcar_du_device *rcdu = dev->dev_private; |
4bf8e196 | 142 | const struct rcar_du_format_info *format; |
8bed5cc7 | 143 | unsigned int max_pitch; |
59e32642 | 144 | unsigned int align; |
8bed5cc7 | 145 | unsigned int bpp; |
4bf8e196 LP |
146 | |
147 | format = rcar_du_format_info(mode_cmd->pixel_format); | |
148 | if (format == NULL) { | |
149 | dev_dbg(dev->dev, "unsupported pixel format %08x\n", | |
150 | mode_cmd->pixel_format); | |
151 | return ERR_PTR(-EINVAL); | |
152 | } | |
153 | ||
8bed5cc7 LP |
154 | /* |
155 | * The pitch and alignment constraints are expressed in pixels on the | |
156 | * hardware side and in bytes in the DRM API. | |
157 | */ | |
158 | bpp = format->planes == 2 ? 1 : format->bpp / 8; | |
159 | max_pitch = 4096 * bpp; | |
160 | ||
e8355e0d | 161 | if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) |
9e2d2de9 LP |
162 | align = 128; |
163 | else | |
8bed5cc7 | 164 | align = 16 * bpp; |
59e32642 LP |
165 | |
166 | if (mode_cmd->pitches[0] & (align - 1) || | |
8bed5cc7 | 167 | mode_cmd->pitches[0] >= max_pitch) { |
4bf8e196 LP |
168 | dev_dbg(dev->dev, "invalid pitch value %u\n", |
169 | mode_cmd->pitches[0]); | |
170 | return ERR_PTR(-EINVAL); | |
171 | } | |
172 | ||
173 | if (format->planes == 2) { | |
174 | if (mode_cmd->pitches[1] != mode_cmd->pitches[0]) { | |
175 | dev_dbg(dev->dev, | |
176 | "luma and chroma pitches do not match\n"); | |
177 | return ERR_PTR(-EINVAL); | |
178 | } | |
179 | } | |
180 | ||
181 | return drm_fb_cma_create(dev, file_priv, mode_cmd); | |
182 | } | |
183 | ||
3864c6f4 LP |
184 | static void rcar_du_output_poll_changed(struct drm_device *dev) |
185 | { | |
186 | struct rcar_du_device *rcdu = dev->dev_private; | |
187 | ||
188 | drm_fbdev_cma_hotplug_event(rcdu->fbdev); | |
189 | } | |
190 | ||
8d3f9b22 | 191 | /* ----------------------------------------------------------------------------- |
5ee5a81d | 192 | * Atomic Check and Update |
8d3f9b22 LP |
193 | */ |
194 | ||
5ee5a81d LP |
195 | /* |
196 | * Atomic hardware plane allocator | |
197 | * | |
198 | * The hardware plane allocator is solely based on the atomic plane states | |
199 | * without keeping any external state to avoid races between .atomic_check() | |
200 | * and .atomic_commit(). | |
201 | * | |
202 | * The core idea is to avoid using a free planes bitmask that would need to be | |
203 | * shared between check and commit handlers with a collective knowledge based on | |
204 | * the allocated hardware plane(s) for each KMS plane. The allocator then loops | |
205 | * over all plane states to compute the free planes bitmask, allocates hardware | |
206 | * planes based on that bitmask, and stores the result back in the plane states. | |
207 | * | |
208 | * For this to work we need to access the current state of planes not touched by | |
209 | * the atomic update. To ensure that it won't be modified, we need to lock all | |
210 | * planes using drm_atomic_get_plane_state(). This effectively serializes atomic | |
211 | * updates from .atomic_check() up to completion (when swapping the states if | |
212 | * the check step has succeeded) or rollback (when freeing the states if the | |
213 | * check step has failed). | |
214 | * | |
215 | * Allocation is performed in the .atomic_check() handler and applied | |
216 | * automatically when the core swaps the old and new states. | |
217 | */ | |
218 | ||
219 | static bool rcar_du_plane_needs_realloc(struct rcar_du_plane *plane, | |
220 | struct rcar_du_plane_state *state) | |
221 | { | |
222 | const struct rcar_du_format_info *cur_format; | |
223 | ||
ec69a406 | 224 | cur_format = to_rcar_plane_state(plane->plane.state)->format; |
5ee5a81d LP |
225 | |
226 | /* Lowering the number of planes doesn't strictly require reallocation | |
227 | * as the extra hardware plane will be freed when committing, but doing | |
228 | * so could lead to more fragmentation. | |
229 | */ | |
230 | return !cur_format || cur_format->planes != state->format->planes; | |
231 | } | |
232 | ||
233 | static unsigned int rcar_du_plane_hwmask(struct rcar_du_plane_state *state) | |
234 | { | |
235 | unsigned int mask; | |
236 | ||
237 | if (state->hwindex == -1) | |
238 | return 0; | |
239 | ||
240 | mask = 1 << state->hwindex; | |
241 | if (state->format->planes == 2) | |
242 | mask |= 1 << ((state->hwindex + 1) % 8); | |
243 | ||
244 | return mask; | |
245 | } | |
246 | ||
247 | static int rcar_du_plane_hwalloc(unsigned int num_planes, unsigned int free) | |
248 | { | |
249 | unsigned int i; | |
250 | ||
251 | for (i = 0; i < RCAR_DU_NUM_HW_PLANES; ++i) { | |
252 | if (!(free & (1 << i))) | |
253 | continue; | |
254 | ||
255 | if (num_planes == 1 || free & (1 << ((i + 1) % 8))) | |
256 | break; | |
257 | } | |
258 | ||
259 | return i == RCAR_DU_NUM_HW_PLANES ? -EBUSY : i; | |
260 | } | |
261 | ||
262 | static int rcar_du_atomic_check(struct drm_device *dev, | |
263 | struct drm_atomic_state *state) | |
264 | { | |
265 | struct rcar_du_device *rcdu = dev->dev_private; | |
266 | unsigned int group_freed_planes[RCAR_DU_MAX_GROUPS] = { 0, }; | |
267 | unsigned int group_free_planes[RCAR_DU_MAX_GROUPS] = { 0, }; | |
268 | bool needs_realloc = false; | |
269 | unsigned int groups = 0; | |
270 | unsigned int i; | |
271 | int ret; | |
272 | ||
273 | ret = drm_atomic_helper_check(dev, state); | |
274 | if (ret < 0) | |
275 | return ret; | |
276 | ||
277 | /* Check if hardware planes need to be reallocated. */ | |
278 | for (i = 0; i < dev->mode_config.num_total_plane; ++i) { | |
279 | struct rcar_du_plane_state *plane_state; | |
280 | struct rcar_du_plane *plane; | |
281 | unsigned int index; | |
282 | ||
283 | if (!state->planes[i]) | |
284 | continue; | |
285 | ||
286 | plane = to_rcar_plane(state->planes[i]); | |
ec69a406 | 287 | plane_state = to_rcar_plane_state(state->plane_states[i]); |
5ee5a81d | 288 | |
08058611 LP |
289 | dev_dbg(rcdu->dev, "%s: checking plane (%u,%u)\n", __func__, |
290 | plane->group->index, plane - plane->group->planes); | |
291 | ||
5ee5a81d LP |
292 | /* If the plane is being disabled we don't need to go through |
293 | * the full reallocation procedure. Just mark the hardware | |
294 | * plane(s) as freed. | |
295 | */ | |
296 | if (!plane_state->format) { | |
08058611 LP |
297 | dev_dbg(rcdu->dev, "%s: plane is being disabled\n", |
298 | __func__); | |
99caede1 | 299 | index = plane - plane->group->planes; |
5ee5a81d LP |
300 | group_freed_planes[plane->group->index] |= 1 << index; |
301 | plane_state->hwindex = -1; | |
302 | continue; | |
303 | } | |
304 | ||
305 | /* If the plane needs to be reallocated mark it as such, and | |
306 | * mark the hardware plane(s) as free. | |
307 | */ | |
308 | if (rcar_du_plane_needs_realloc(plane, plane_state)) { | |
08058611 LP |
309 | dev_dbg(rcdu->dev, "%s: plane needs reallocation\n", |
310 | __func__); | |
5ee5a81d LP |
311 | groups |= 1 << plane->group->index; |
312 | needs_realloc = true; | |
313 | ||
99caede1 | 314 | index = plane - plane->group->planes; |
5ee5a81d LP |
315 | group_freed_planes[plane->group->index] |= 1 << index; |
316 | plane_state->hwindex = -1; | |
317 | } | |
318 | } | |
319 | ||
320 | if (!needs_realloc) | |
321 | return 0; | |
322 | ||
323 | /* Grab all plane states for the groups that need reallocation to ensure | |
324 | * locking and avoid racy updates. This serializes the update operation, | |
325 | * but there's not much we can do about it as that's the hardware | |
326 | * design. | |
327 | * | |
328 | * Compute the used planes mask for each group at the same time to avoid | |
329 | * looping over the planes separately later. | |
330 | */ | |
331 | while (groups) { | |
332 | unsigned int index = ffs(groups) - 1; | |
333 | struct rcar_du_group *group = &rcdu->groups[index]; | |
334 | unsigned int used_planes = 0; | |
335 | ||
08058611 LP |
336 | dev_dbg(rcdu->dev, "%s: finding free planes for group %u\n", |
337 | __func__, index); | |
338 | ||
d6aed574 | 339 | for (i = 0; i < group->num_planes; ++i) { |
99caede1 | 340 | struct rcar_du_plane *plane = &group->planes[i]; |
5ee5a81d LP |
341 | struct rcar_du_plane_state *plane_state; |
342 | struct drm_plane_state *s; | |
343 | ||
344 | s = drm_atomic_get_plane_state(state, &plane->plane); | |
345 | if (IS_ERR(s)) | |
346 | return PTR_ERR(s); | |
347 | ||
348 | /* If the plane has been freed in the above loop its | |
349 | * hardware planes must not be added to the used planes | |
350 | * bitmask. However, the current state doesn't reflect | |
351 | * the free state yet, as we've modified the new state | |
352 | * above. Use the local freed planes list to check for | |
353 | * that condition instead. | |
354 | */ | |
08058611 LP |
355 | if (group_freed_planes[index] & (1 << i)) { |
356 | dev_dbg(rcdu->dev, | |
357 | "%s: plane (%u,%u) has been freed, skipping\n", | |
358 | __func__, plane->group->index, | |
359 | plane - plane->group->planes); | |
5ee5a81d | 360 | continue; |
08058611 | 361 | } |
5ee5a81d | 362 | |
ec69a406 | 363 | plane_state = to_rcar_plane_state(plane->plane.state); |
5ee5a81d | 364 | used_planes |= rcar_du_plane_hwmask(plane_state); |
08058611 LP |
365 | |
366 | dev_dbg(rcdu->dev, | |
367 | "%s: plane (%u,%u) uses %u hwplanes (index %d)\n", | |
368 | __func__, plane->group->index, | |
369 | plane - plane->group->planes, | |
370 | plane_state->format ? | |
371 | plane_state->format->planes : 0, | |
372 | plane_state->hwindex); | |
5ee5a81d LP |
373 | } |
374 | ||
375 | group_free_planes[index] = 0xff & ~used_planes; | |
376 | groups &= ~(1 << index); | |
08058611 LP |
377 | |
378 | dev_dbg(rcdu->dev, "%s: group %u free planes mask 0x%02x\n", | |
379 | __func__, index, group_free_planes[index]); | |
5ee5a81d LP |
380 | } |
381 | ||
382 | /* Reallocate hardware planes for each plane that needs it. */ | |
383 | for (i = 0; i < dev->mode_config.num_total_plane; ++i) { | |
384 | struct rcar_du_plane_state *plane_state; | |
385 | struct rcar_du_plane *plane; | |
c8af99b6 LP |
386 | unsigned int crtc_planes; |
387 | unsigned int free; | |
5ee5a81d LP |
388 | int idx; |
389 | ||
390 | if (!state->planes[i]) | |
391 | continue; | |
392 | ||
393 | plane = to_rcar_plane(state->planes[i]); | |
ec69a406 | 394 | plane_state = to_rcar_plane_state(state->plane_states[i]); |
5ee5a81d | 395 | |
08058611 LP |
396 | dev_dbg(rcdu->dev, "%s: allocating plane (%u,%u)\n", __func__, |
397 | plane->group->index, plane - plane->group->planes); | |
398 | ||
5ee5a81d LP |
399 | /* Skip planes that are being disabled or don't need to be |
400 | * reallocated. | |
401 | */ | |
402 | if (!plane_state->format || | |
403 | !rcar_du_plane_needs_realloc(plane, plane_state)) | |
404 | continue; | |
405 | ||
c8af99b6 LP |
406 | /* Try to allocate the plane from the free planes currently |
407 | * associated with the target CRTC to avoid restarting the CRTC | |
408 | * group and thus minimize flicker. If it fails fall back to | |
409 | * allocating from all free planes. | |
410 | */ | |
411 | crtc_planes = to_rcar_crtc(plane_state->state.crtc)->index % 2 | |
412 | ? plane->group->dptsr_planes | |
413 | : ~plane->group->dptsr_planes; | |
414 | free = group_free_planes[plane->group->index]; | |
415 | ||
5ee5a81d | 416 | idx = rcar_du_plane_hwalloc(plane_state->format->planes, |
c8af99b6 LP |
417 | free & crtc_planes); |
418 | if (idx < 0) | |
419 | idx = rcar_du_plane_hwalloc(plane_state->format->planes, | |
420 | free); | |
5ee5a81d LP |
421 | if (idx < 0) { |
422 | dev_dbg(rcdu->dev, "%s: no available hardware plane\n", | |
423 | __func__); | |
424 | return idx; | |
425 | } | |
426 | ||
08058611 LP |
427 | dev_dbg(rcdu->dev, "%s: allocated %u hwplanes (index %u)\n", |
428 | __func__, plane_state->format->planes, idx); | |
429 | ||
5ee5a81d LP |
430 | plane_state->hwindex = idx; |
431 | ||
432 | group_free_planes[plane->group->index] &= | |
433 | ~rcar_du_plane_hwmask(plane_state); | |
08058611 LP |
434 | |
435 | dev_dbg(rcdu->dev, "%s: group %u free planes mask 0x%02x\n", | |
436 | __func__, plane->group->index, | |
437 | group_free_planes[plane->group->index]); | |
5ee5a81d LP |
438 | } |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
8d3f9b22 LP |
443 | struct rcar_du_commit { |
444 | struct work_struct work; | |
445 | struct drm_device *dev; | |
446 | struct drm_atomic_state *state; | |
447 | u32 crtcs; | |
448 | }; | |
449 | ||
450 | static void rcar_du_atomic_complete(struct rcar_du_commit *commit) | |
451 | { | |
452 | struct drm_device *dev = commit->dev; | |
453 | struct rcar_du_device *rcdu = dev->dev_private; | |
454 | struct drm_atomic_state *old_state = commit->state; | |
455 | ||
456 | /* Apply the atomic update. */ | |
457 | drm_atomic_helper_commit_modeset_disables(dev, old_state); | |
8d3f9b22 | 458 | drm_atomic_helper_commit_modeset_enables(dev, old_state); |
aef9dbb8 | 459 | drm_atomic_helper_commit_planes(dev, old_state, false); |
8d3f9b22 LP |
460 | |
461 | drm_atomic_helper_wait_for_vblanks(dev, old_state); | |
462 | ||
463 | drm_atomic_helper_cleanup_planes(dev, old_state); | |
464 | ||
465 | drm_atomic_state_free(old_state); | |
466 | ||
467 | /* Complete the commit, wake up any waiter. */ | |
468 | spin_lock(&rcdu->commit.wait.lock); | |
469 | rcdu->commit.pending &= ~commit->crtcs; | |
470 | wake_up_all_locked(&rcdu->commit.wait); | |
471 | spin_unlock(&rcdu->commit.wait.lock); | |
472 | ||
473 | kfree(commit); | |
474 | } | |
475 | ||
476 | static void rcar_du_atomic_work(struct work_struct *work) | |
477 | { | |
478 | struct rcar_du_commit *commit = | |
479 | container_of(work, struct rcar_du_commit, work); | |
480 | ||
481 | rcar_du_atomic_complete(commit); | |
482 | } | |
483 | ||
484 | static int rcar_du_atomic_commit(struct drm_device *dev, | |
485 | struct drm_atomic_state *state, bool async) | |
486 | { | |
487 | struct rcar_du_device *rcdu = dev->dev_private; | |
488 | struct rcar_du_commit *commit; | |
489 | unsigned int i; | |
490 | int ret; | |
491 | ||
492 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
493 | if (ret) | |
494 | return ret; | |
495 | ||
496 | /* Allocate the commit object. */ | |
497 | commit = kzalloc(sizeof(*commit), GFP_KERNEL); | |
39a3d570 LP |
498 | if (commit == NULL) { |
499 | ret = -ENOMEM; | |
500 | goto error; | |
501 | } | |
8d3f9b22 LP |
502 | |
503 | INIT_WORK(&commit->work, rcar_du_atomic_work); | |
504 | commit->dev = dev; | |
505 | commit->state = state; | |
506 | ||
507 | /* Wait until all affected CRTCs have completed previous commits and | |
508 | * mark them as pending. | |
509 | */ | |
510 | for (i = 0; i < dev->mode_config.num_crtc; ++i) { | |
511 | if (state->crtcs[i]) | |
512 | commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]); | |
513 | } | |
514 | ||
515 | spin_lock(&rcdu->commit.wait.lock); | |
516 | ret = wait_event_interruptible_locked(rcdu->commit.wait, | |
517 | !(rcdu->commit.pending & commit->crtcs)); | |
518 | if (ret == 0) | |
519 | rcdu->commit.pending |= commit->crtcs; | |
520 | spin_unlock(&rcdu->commit.wait.lock); | |
521 | ||
522 | if (ret) { | |
523 | kfree(commit); | |
39a3d570 | 524 | goto error; |
8d3f9b22 LP |
525 | } |
526 | ||
527 | /* Swap the state, this is the point of no return. */ | |
528 | drm_atomic_helper_swap_state(dev, state); | |
529 | ||
530 | if (async) | |
531 | schedule_work(&commit->work); | |
532 | else | |
533 | rcar_du_atomic_complete(commit); | |
534 | ||
535 | return 0; | |
39a3d570 LP |
536 | |
537 | error: | |
538 | drm_atomic_helper_cleanup_planes(dev, state); | |
539 | return ret; | |
8d3f9b22 LP |
540 | } |
541 | ||
542 | /* ----------------------------------------------------------------------------- | |
543 | * Initialization | |
544 | */ | |
545 | ||
4bf8e196 LP |
546 | static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = { |
547 | .fb_create = rcar_du_fb_create, | |
3864c6f4 | 548 | .output_poll_changed = rcar_du_output_poll_changed, |
5ee5a81d | 549 | .atomic_check = rcar_du_atomic_check, |
8d3f9b22 | 550 | .atomic_commit = rcar_du_atomic_commit, |
4bf8e196 LP |
551 | }; |
552 | ||
2378ad12 LP |
553 | static int rcar_du_encoders_init_one(struct rcar_du_device *rcdu, |
554 | enum rcar_du_output output, | |
555 | struct of_endpoint *ep) | |
96c02691 LP |
556 | { |
557 | static const struct { | |
558 | const char *compatible; | |
559 | enum rcar_du_encoder_type type; | |
560 | } encoders[] = { | |
561 | { "adi,adv7123", RCAR_DU_ENCODER_VGA }, | |
637e6194 | 562 | { "adi,adv7511w", RCAR_DU_ENCODER_HDMI }, |
96c02691 LP |
563 | { "thine,thc63lvdm83d", RCAR_DU_ENCODER_LVDS }, |
564 | }; | |
565 | ||
566 | enum rcar_du_encoder_type enc_type = RCAR_DU_ENCODER_NONE; | |
567 | struct device_node *connector = NULL; | |
568 | struct device_node *encoder = NULL; | |
f033c0bc | 569 | struct device_node *ep_node = NULL; |
96c02691 LP |
570 | struct device_node *entity_ep_node; |
571 | struct device_node *entity; | |
572 | int ret; | |
573 | ||
574 | /* | |
575 | * Locate the connected entity and infer its type from the number of | |
576 | * endpoints. | |
577 | */ | |
578 | entity = of_graph_get_remote_port_parent(ep->local_node); | |
579 | if (!entity) { | |
580 | dev_dbg(rcdu->dev, "unconnected endpoint %s, skipping\n", | |
581 | ep->local_node->full_name); | |
898a2f38 | 582 | return -ENODEV; |
96c02691 LP |
583 | } |
584 | ||
585 | entity_ep_node = of_parse_phandle(ep->local_node, "remote-endpoint", 0); | |
586 | ||
4af642d5 | 587 | for_each_endpoint_of_node(entity, ep_node) { |
96c02691 LP |
588 | if (ep_node == entity_ep_node) |
589 | continue; | |
590 | ||
591 | /* | |
592 | * We've found one endpoint other than the input, this must | |
593 | * be an encoder. Locate the connector. | |
594 | */ | |
595 | encoder = entity; | |
596 | connector = of_graph_get_remote_port_parent(ep_node); | |
597 | of_node_put(ep_node); | |
598 | ||
599 | if (!connector) { | |
600 | dev_warn(rcdu->dev, | |
601 | "no connector for encoder %s, skipping\n", | |
602 | encoder->full_name); | |
603 | of_node_put(entity_ep_node); | |
604 | of_node_put(encoder); | |
898a2f38 | 605 | return -ENODEV; |
96c02691 LP |
606 | } |
607 | ||
608 | break; | |
609 | } | |
610 | ||
611 | of_node_put(entity_ep_node); | |
612 | ||
613 | if (encoder) { | |
614 | /* | |
615 | * If an encoder has been found, get its type based on its | |
616 | * compatible string. | |
617 | */ | |
618 | unsigned int i; | |
619 | ||
620 | for (i = 0; i < ARRAY_SIZE(encoders); ++i) { | |
621 | if (of_device_is_compatible(encoder, | |
622 | encoders[i].compatible)) { | |
623 | enc_type = encoders[i].type; | |
624 | break; | |
625 | } | |
626 | } | |
627 | ||
628 | if (i == ARRAY_SIZE(encoders)) { | |
629 | dev_warn(rcdu->dev, | |
630 | "unknown encoder type for %s, skipping\n", | |
631 | encoder->full_name); | |
632 | of_node_put(encoder); | |
633 | of_node_put(connector); | |
898a2f38 | 634 | return -EINVAL; |
96c02691 LP |
635 | } |
636 | } else { | |
637 | /* | |
638 | * If no encoder has been found the entity must be the | |
639 | * connector. | |
640 | */ | |
641 | connector = entity; | |
642 | } | |
643 | ||
3ea4d5ec | 644 | ret = rcar_du_encoder_init(rcdu, enc_type, output, encoder, connector); |
96c02691 LP |
645 | of_node_put(encoder); |
646 | of_node_put(connector); | |
647 | ||
64549cdf LP |
648 | if (ret && ret != -EPROBE_DEFER) |
649 | dev_warn(rcdu->dev, | |
650 | "failed to initialize encoder %s (%d), skipping\n", | |
651 | encoder->full_name, ret); | |
652 | ||
898a2f38 | 653 | return ret; |
96c02691 LP |
654 | } |
655 | ||
2378ad12 | 656 | static int rcar_du_encoders_init(struct rcar_du_device *rcdu) |
96c02691 LP |
657 | { |
658 | struct device_node *np = rcdu->dev->of_node; | |
4af642d5 | 659 | struct device_node *ep_node; |
96c02691 LP |
660 | unsigned int num_encoders = 0; |
661 | ||
662 | /* | |
663 | * Iterate over the endpoints and create one encoder for each output | |
664 | * pipeline. | |
665 | */ | |
4af642d5 | 666 | for_each_endpoint_of_node(np, ep_node) { |
96c02691 LP |
667 | enum rcar_du_output output; |
668 | struct of_endpoint ep; | |
669 | unsigned int i; | |
670 | int ret; | |
671 | ||
96c02691 LP |
672 | ret = of_graph_parse_endpoint(ep_node, &ep); |
673 | if (ret < 0) { | |
674 | of_node_put(ep_node); | |
675 | return ret; | |
676 | } | |
677 | ||
678 | /* Find the output route corresponding to the port number. */ | |
679 | for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) { | |
680 | if (rcdu->info->routes[i].possible_crtcs && | |
681 | rcdu->info->routes[i].port == ep.port) { | |
682 | output = i; | |
683 | break; | |
684 | } | |
685 | } | |
686 | ||
687 | if (i == RCAR_DU_OUTPUT_MAX) { | |
688 | dev_warn(rcdu->dev, | |
689 | "port %u references unexisting output, skipping\n", | |
690 | ep.port); | |
691 | continue; | |
692 | } | |
693 | ||
694 | /* Process the output pipeline. */ | |
2378ad12 | 695 | ret = rcar_du_encoders_init_one(rcdu, output, &ep); |
96c02691 | 696 | if (ret < 0) { |
347d761c LP |
697 | if (ret == -EPROBE_DEFER) { |
698 | of_node_put(ep_node); | |
699 | return ret; | |
700 | } | |
701 | ||
347d761c | 702 | continue; |
96c02691 LP |
703 | } |
704 | ||
898a2f38 | 705 | num_encoders++; |
96c02691 LP |
706 | } |
707 | ||
708 | return num_encoders; | |
709 | } | |
710 | ||
9f6aee95 LP |
711 | static int rcar_du_properties_init(struct rcar_du_device *rcdu) |
712 | { | |
713 | rcdu->props.alpha = | |
714 | drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255); | |
715 | if (rcdu->props.alpha == NULL) | |
716 | return -ENOMEM; | |
717 | ||
718 | /* The color key is expressed as an RGB888 triplet stored in a 32-bit | |
719 | * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0) | |
720 | * or enable source color keying (1). | |
721 | */ | |
722 | rcdu->props.colorkey = | |
723 | drm_property_create_range(rcdu->ddev, 0, "colorkey", | |
724 | 0, 0x01ffffff); | |
725 | if (rcdu->props.colorkey == NULL) | |
726 | return -ENOMEM; | |
727 | ||
728 | rcdu->props.zpos = | |
729 | drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7); | |
730 | if (rcdu->props.zpos == NULL) | |
731 | return -ENOMEM; | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
4bf8e196 LP |
736 | int rcar_du_modeset_init(struct rcar_du_device *rcdu) |
737 | { | |
a5f0ef59 LP |
738 | static const unsigned int mmio_offsets[] = { |
739 | DU0_REG_OFFSET, DU2_REG_OFFSET | |
740 | }; | |
741 | ||
4bf8e196 LP |
742 | struct drm_device *dev = rcdu->ddev; |
743 | struct drm_encoder *encoder; | |
3864c6f4 | 744 | struct drm_fbdev_cma *fbdev; |
96c02691 | 745 | unsigned int num_encoders; |
a5f0ef59 | 746 | unsigned int num_groups; |
4bf8e196 LP |
747 | unsigned int i; |
748 | int ret; | |
749 | ||
3864c6f4 | 750 | drm_mode_config_init(dev); |
4bf8e196 | 751 | |
3864c6f4 LP |
752 | dev->mode_config.min_width = 0; |
753 | dev->mode_config.min_height = 0; | |
754 | dev->mode_config.max_width = 4095; | |
755 | dev->mode_config.max_height = 2047; | |
756 | dev->mode_config.funcs = &rcar_du_mode_config_funcs; | |
4bf8e196 | 757 | |
a5f0ef59 LP |
758 | rcdu->num_crtcs = rcdu->info->num_crtcs; |
759 | ||
9f6aee95 LP |
760 | ret = rcar_du_properties_init(rcdu); |
761 | if (ret < 0) | |
762 | return ret; | |
763 | ||
a5f0ef59 LP |
764 | /* Initialize the groups. */ |
765 | num_groups = DIV_ROUND_UP(rcdu->num_crtcs, 2); | |
766 | ||
767 | for (i = 0; i < num_groups; ++i) { | |
768 | struct rcar_du_group *rgrp = &rcdu->groups[i]; | |
cb2025d2 | 769 | |
5ee5a81d LP |
770 | mutex_init(&rgrp->lock); |
771 | ||
a5f0ef59 LP |
772 | rgrp->dev = rcdu; |
773 | rgrp->mmio_offset = mmio_offsets[i]; | |
774 | rgrp->index = i; | |
fe6fbe9a | 775 | rgrp->num_crtcs = min(rcdu->num_crtcs - 2 * i, 2U); |
4bf8e196 | 776 | |
2610abfb LP |
777 | /* If we have more than one CRTCs in this group pre-associate |
778 | * planes 0-3 with CRTC 0 and planes 4-7 with CRTC 1 to minimize | |
779 | * flicker occurring when the association is changed. | |
c8af99b6 | 780 | */ |
2610abfb | 781 | rgrp->dptsr_planes = rgrp->num_crtcs > 1 ? 0xf0 : 0; |
c8af99b6 | 782 | |
a5f0ef59 | 783 | ret = rcar_du_planes_init(rgrp); |
3463ff67 LP |
784 | if (ret < 0) |
785 | return ret; | |
786 | } | |
4bf8e196 | 787 | |
a5f0ef59 LP |
788 | /* Create the CRTCs. */ |
789 | for (i = 0; i < rcdu->num_crtcs; ++i) { | |
790 | struct rcar_du_group *rgrp = &rcdu->groups[i / 2]; | |
791 | ||
792 | ret = rcar_du_crtc_create(rgrp, i); | |
793 | if (ret < 0) | |
794 | return ret; | |
795 | } | |
4bf8e196 | 796 | |
a5f0ef59 | 797 | /* Initialize the encoders. */ |
90374b5c LP |
798 | ret = rcar_du_lvdsenc_init(rcdu); |
799 | if (ret < 0) | |
800 | return ret; | |
801 | ||
2378ad12 | 802 | ret = rcar_du_encoders_init(rcdu); |
96c02691 LP |
803 | if (ret < 0) |
804 | return ret; | |
4bf8e196 | 805 | |
347d761c LP |
806 | if (ret == 0) { |
807 | dev_err(rcdu->dev, "error: no encoder could be initialized\n"); | |
808 | return -EINVAL; | |
809 | } | |
810 | ||
96c02691 | 811 | num_encoders = ret; |
4bf8e196 | 812 | |
ef67a902 LP |
813 | /* Set the possible CRTCs and possible clones. There's always at least |
814 | * one way for all encoders to clone each other, set all bits in the | |
815 | * possible clones field. | |
4bf8e196 LP |
816 | */ |
817 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
818 | struct rcar_du_encoder *renc = to_rcar_encoder(encoder); | |
ef67a902 LP |
819 | const struct rcar_du_output_routing *route = |
820 | &rcdu->info->routes[renc->output]; | |
4bf8e196 | 821 | |
ef67a902 | 822 | encoder->possible_crtcs = route->possible_crtcs; |
96c02691 | 823 | encoder->possible_clones = (1 << num_encoders) - 1; |
4bf8e196 LP |
824 | } |
825 | ||
3e8da87d LP |
826 | drm_mode_config_reset(dev); |
827 | ||
3864c6f4 LP |
828 | drm_kms_helper_poll_init(dev); |
829 | ||
931b7336 LP |
830 | if (dev->mode_config.num_connector) { |
831 | fbdev = drm_fbdev_cma_init(dev, 32, dev->mode_config.num_crtc, | |
832 | dev->mode_config.num_connector); | |
833 | if (IS_ERR(fbdev)) | |
834 | return PTR_ERR(fbdev); | |
3864c6f4 | 835 | |
931b7336 LP |
836 | rcdu->fbdev = fbdev; |
837 | } else { | |
838 | dev_info(rcdu->dev, | |
839 | "no connector found, disabling fbdev emulation\n"); | |
840 | } | |
4bf8e196 LP |
841 | |
842 | return 0; | |
843 | } |