1 /* exynos_drm_encoder.c
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <drm/drm_crtc_helper.h>
18 #include "exynos_drm_drv.h"
19 #include "exynos_drm_encoder.h"
20 #include "exynos_drm_connector.h"
22 #define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\
26 * exynos specific encoder structure.
28 * @drm_encoder: encoder object.
29 * @manager: specific encoder has its own manager to control a hardware
30 * appropriately and we can access a hardware drawing on this manager.
31 * @dpms: store the encoder dpms value.
32 * @updated: indicate whether overlay data updating is needed or not.
34 struct exynos_drm_encoder {
35 struct drm_crtc *old_crtc;
36 struct drm_encoder drm_encoder;
37 struct exynos_drm_manager *manager;
42 static void exynos_drm_connector_power(struct drm_encoder *encoder, int mode)
44 struct drm_device *dev = encoder->dev;
45 struct drm_connector *connector;
47 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
48 if (exynos_drm_best_encoder(connector) == encoder) {
49 DRM_DEBUG_KMS("connector[%d] dpms[%d]\n",
50 connector->base.id, mode);
52 exynos_drm_display_power(connector, mode);
57 static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
59 struct drm_device *dev = encoder->dev;
60 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
61 struct exynos_drm_manager_ops *manager_ops = manager->ops;
62 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
64 DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode);
66 if (exynos_encoder->dpms == mode) {
67 DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
71 mutex_lock(&dev->struct_mutex);
74 case DRM_MODE_DPMS_ON:
75 if (manager_ops && manager_ops->apply)
76 if (!exynos_encoder->updated)
77 manager_ops->apply(manager->dev);
79 exynos_drm_connector_power(encoder, mode);
80 exynos_encoder->dpms = mode;
82 case DRM_MODE_DPMS_STANDBY:
83 case DRM_MODE_DPMS_SUSPEND:
84 case DRM_MODE_DPMS_OFF:
85 exynos_drm_connector_power(encoder, mode);
86 exynos_encoder->dpms = mode;
87 exynos_encoder->updated = false;
90 DRM_ERROR("unspecified mode %d\n", mode);
94 mutex_unlock(&dev->struct_mutex);
98 exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder,
99 const struct drm_display_mode *mode,
100 struct drm_display_mode *adjusted_mode)
102 struct drm_device *dev = encoder->dev;
103 struct drm_connector *connector;
104 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
105 struct exynos_drm_manager_ops *manager_ops = manager->ops;
107 DRM_DEBUG_KMS("%s\n", __FILE__);
109 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
110 if (connector->encoder == encoder)
111 if (manager_ops && manager_ops->mode_fixup)
112 manager_ops->mode_fixup(manager->dev, connector,
113 mode, adjusted_mode);
119 static void disable_plane_to_crtc(struct drm_device *dev,
120 struct drm_crtc *old_crtc,
121 struct drm_crtc *new_crtc)
123 struct drm_plane *plane;
126 * if old_crtc isn't same as encoder->crtc then it means that
127 * user changed crtc id to another one so the plane to old_crtc
128 * should be disabled and plane->crtc should be set to new_crtc
131 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
132 if (plane->crtc == old_crtc) {
134 * do not change below call order.
136 * plane->funcs->disable_plane call checks
137 * if encoder->crtc is same as plane->crtc and if same
138 * then overlay_ops->disable callback will be called
139 * to diasble current hw overlay so plane->crtc should
140 * have new_crtc because new_crtc was set to
141 * encoder->crtc in advance.
143 plane->crtc = new_crtc;
144 plane->funcs->disable_plane(plane);
149 static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
150 struct drm_display_mode *mode,
151 struct drm_display_mode *adjusted_mode)
153 struct drm_device *dev = encoder->dev;
154 struct drm_connector *connector;
155 struct exynos_drm_manager *manager;
156 struct exynos_drm_manager_ops *manager_ops;
158 DRM_DEBUG_KMS("%s\n", __FILE__);
160 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
161 if (connector->encoder == encoder) {
162 struct exynos_drm_encoder *exynos_encoder;
164 exynos_encoder = to_exynos_encoder(encoder);
166 if (exynos_encoder->old_crtc != encoder->crtc &&
167 exynos_encoder->old_crtc) {
170 * disable a plane to old crtc and change
171 * crtc of the plane to new one.
173 disable_plane_to_crtc(dev,
174 exynos_encoder->old_crtc,
178 manager = exynos_drm_get_manager(encoder);
179 manager_ops = manager->ops;
181 if (manager_ops && manager_ops->mode_set)
182 manager_ops->mode_set(manager->dev,
185 exynos_encoder->old_crtc = encoder->crtc;
190 static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
192 DRM_DEBUG_KMS("%s\n", __FILE__);
194 /* drm framework doesn't check NULL. */
197 static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
199 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
200 struct exynos_drm_manager *manager = exynos_encoder->manager;
201 struct exynos_drm_manager_ops *manager_ops = manager->ops;
203 DRM_DEBUG_KMS("%s\n", __FILE__);
205 if (manager_ops && manager_ops->commit)
206 manager_ops->commit(manager->dev);
209 * this will avoid one issue that overlay data is updated to
210 * real hardware two times.
211 * And this variable will be used to check if the data was
212 * already updated or not by exynos_drm_encoder_dpms function.
214 exynos_encoder->updated = true;
217 * In case of setcrtc, there is no way to update encoder's dpms
220 exynos_encoder->dpms = DRM_MODE_DPMS_ON;
223 void exynos_drm_encoder_complete_scanout(struct drm_framebuffer *fb)
225 struct exynos_drm_encoder *exynos_encoder;
226 struct exynos_drm_manager_ops *ops;
227 struct drm_device *dev = fb->dev;
228 struct drm_encoder *encoder;
231 * make sure that overlay data are updated to real hardware
234 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
235 exynos_encoder = to_exynos_encoder(encoder);
236 ops = exynos_encoder->manager->ops;
239 * wait for vblank interrupt
240 * - this makes sure that overlay data are updated to
243 if (ops->wait_for_vblank)
244 ops->wait_for_vblank(exynos_encoder->manager->dev);
249 static void exynos_drm_encoder_disable(struct drm_encoder *encoder)
251 struct drm_plane *plane;
252 struct drm_device *dev = encoder->dev;
254 exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
256 /* all planes connected to this encoder should be also disabled. */
257 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
258 if (plane->crtc == encoder->crtc)
259 plane->funcs->disable_plane(plane);
263 static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
264 .dpms = exynos_drm_encoder_dpms,
265 .mode_fixup = exynos_drm_encoder_mode_fixup,
266 .mode_set = exynos_drm_encoder_mode_set,
267 .prepare = exynos_drm_encoder_prepare,
268 .commit = exynos_drm_encoder_commit,
269 .disable = exynos_drm_encoder_disable,
272 static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)
274 struct exynos_drm_encoder *exynos_encoder =
275 to_exynos_encoder(encoder);
277 DRM_DEBUG_KMS("%s\n", __FILE__);
279 exynos_encoder->manager->pipe = -1;
281 drm_encoder_cleanup(encoder);
282 kfree(exynos_encoder);
285 static struct drm_encoder_funcs exynos_encoder_funcs = {
286 .destroy = exynos_drm_encoder_destroy,
289 static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
291 struct drm_encoder *clone;
292 struct drm_device *dev = encoder->dev;
293 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
294 struct exynos_drm_display_ops *display_ops =
295 exynos_encoder->manager->display_ops;
296 unsigned int clone_mask = 0;
299 list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
300 switch (display_ops->type) {
301 case EXYNOS_DISPLAY_TYPE_LCD:
302 case EXYNOS_DISPLAY_TYPE_HDMI:
303 case EXYNOS_DISPLAY_TYPE_VIDI:
304 clone_mask |= (1 << (cnt++));
314 void exynos_drm_encoder_setup(struct drm_device *dev)
316 struct drm_encoder *encoder;
318 DRM_DEBUG_KMS("%s\n", __FILE__);
320 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
321 encoder->possible_clones = exynos_drm_encoder_clones(encoder);
325 exynos_drm_encoder_create(struct drm_device *dev,
326 struct exynos_drm_manager *manager,
327 unsigned int possible_crtcs)
329 struct drm_encoder *encoder;
330 struct exynos_drm_encoder *exynos_encoder;
332 DRM_DEBUG_KMS("%s\n", __FILE__);
334 if (!manager || !possible_crtcs)
340 exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL);
341 if (!exynos_encoder) {
342 DRM_ERROR("failed to allocate encoder\n");
346 exynos_encoder->dpms = DRM_MODE_DPMS_OFF;
347 exynos_encoder->manager = manager;
348 encoder = &exynos_encoder->drm_encoder;
349 encoder->possible_crtcs = possible_crtcs;
351 DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
353 drm_encoder_init(dev, encoder, &exynos_encoder_funcs,
354 DRM_MODE_ENCODER_TMDS);
356 drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs);
358 DRM_DEBUG_KMS("encoder has been created\n");
363 struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder)
365 return to_exynos_encoder(encoder)->manager;
368 void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data,
369 void (*fn)(struct drm_encoder *, void *))
371 struct drm_device *dev = crtc->dev;
372 struct drm_encoder *encoder;
373 struct exynos_drm_private *private = dev->dev_private;
374 struct exynos_drm_manager *manager;
376 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
378 * if crtc is detached from encoder, check pipe,
379 * otherwise check crtc attached to encoder
381 if (!encoder->crtc) {
382 manager = to_exynos_encoder(encoder)->manager;
383 if (manager->pipe < 0 ||
384 private->crtc[manager->pipe] != crtc)
387 if (encoder->crtc != crtc)
395 void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data)
397 struct exynos_drm_manager *manager =
398 to_exynos_encoder(encoder)->manager;
399 struct exynos_drm_manager_ops *manager_ops = manager->ops;
400 int crtc = *(int *)data;
402 if (manager->pipe != crtc)
405 if (manager_ops->enable_vblank)
406 manager_ops->enable_vblank(manager->dev);
409 void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
411 struct exynos_drm_manager *manager =
412 to_exynos_encoder(encoder)->manager;
413 struct exynos_drm_manager_ops *manager_ops = manager->ops;
414 int crtc = *(int *)data;
416 if (manager->pipe != crtc)
419 if (manager_ops->disable_vblank)
420 manager_ops->disable_vblank(manager->dev);
423 void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
425 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
426 struct exynos_drm_manager *manager = exynos_encoder->manager;
427 struct exynos_drm_manager_ops *manager_ops = manager->ops;
428 int mode = *(int *)data;
430 DRM_DEBUG_KMS("%s\n", __FILE__);
432 if (manager_ops && manager_ops->dpms)
433 manager_ops->dpms(manager->dev, mode);
436 * if this condition is ok then it means that the crtc is already
437 * detached from encoder and last function for detaching is properly
438 * done, so clear pipe from manager to prevent repeated call.
440 if (mode > DRM_MODE_DPMS_ON) {
446 void exynos_drm_encoder_crtc_pipe(struct drm_encoder *encoder, void *data)
448 struct exynos_drm_manager *manager =
449 to_exynos_encoder(encoder)->manager;
450 int pipe = *(int *)data;
452 DRM_DEBUG_KMS("%s\n", __FILE__);
455 * when crtc is detached from encoder, this pipe is used
456 * to select manager operation
458 manager->pipe = pipe;
461 void exynos_drm_encoder_plane_mode_set(struct drm_encoder *encoder, void *data)
463 struct exynos_drm_manager *manager =
464 to_exynos_encoder(encoder)->manager;
465 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
466 struct exynos_drm_overlay *overlay = data;
468 DRM_DEBUG_KMS("%s\n", __FILE__);
470 if (overlay_ops && overlay_ops->mode_set)
471 overlay_ops->mode_set(manager->dev, overlay);
474 void exynos_drm_encoder_plane_commit(struct drm_encoder *encoder, void *data)
476 struct exynos_drm_manager *manager =
477 to_exynos_encoder(encoder)->manager;
478 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
479 int zpos = DEFAULT_ZPOS;
481 DRM_DEBUG_KMS("%s\n", __FILE__);
486 if (overlay_ops && overlay_ops->commit)
487 overlay_ops->commit(manager->dev, zpos);
490 void exynos_drm_encoder_plane_enable(struct drm_encoder *encoder, void *data)
492 struct exynos_drm_manager *manager =
493 to_exynos_encoder(encoder)->manager;
494 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
495 int zpos = DEFAULT_ZPOS;
497 DRM_DEBUG_KMS("%s\n", __FILE__);
502 if (overlay_ops && overlay_ops->enable)
503 overlay_ops->enable(manager->dev, zpos);
506 void exynos_drm_encoder_plane_disable(struct drm_encoder *encoder, void *data)
508 struct exynos_drm_manager *manager =
509 to_exynos_encoder(encoder)->manager;
510 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
511 int zpos = DEFAULT_ZPOS;
513 DRM_DEBUG_KMS("%s\n", __FILE__);
518 if (overlay_ops && overlay_ops->disable)
519 overlay_ops->disable(manager->dev, zpos);