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 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 * OTHER DEALINGS IN THE SOFTWARE.
30 #include "drm_crtc_helper.h"
32 #include "exynos_drm_drv.h"
33 #include "exynos_drm_crtc.h"
34 #include "exynos_drm_encoder.h"
36 #define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\
40 * exynos specific encoder structure.
42 * @drm_encoder: encoder object.
43 * @manager: specific encoder has its own manager to control a hardware
44 * appropriately and we can access a hardware drawing on this manager.
45 * @dpms: store the encoder dpms value.
47 struct exynos_drm_encoder {
48 struct drm_encoder drm_encoder;
49 struct exynos_drm_manager *manager;
53 static void exynos_drm_display_power(struct drm_encoder *encoder, int mode)
55 struct drm_device *dev = encoder->dev;
56 struct drm_connector *connector;
57 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
59 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
60 if (connector->encoder == encoder) {
61 struct exynos_drm_display_ops *display_ops =
64 DRM_DEBUG_KMS("connector[%d] dpms[%d]\n",
65 connector->base.id, mode);
66 if (display_ops && display_ops->power_on)
67 display_ops->power_on(manager->dev, mode);
72 static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
74 struct drm_device *dev = encoder->dev;
75 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
76 struct exynos_drm_manager_ops *manager_ops = manager->ops;
77 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
79 DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode);
81 if (exynos_encoder->dpms == mode) {
82 DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
86 mutex_lock(&dev->struct_mutex);
89 case DRM_MODE_DPMS_ON:
90 if (manager_ops && manager_ops->apply)
91 manager_ops->apply(manager->dev);
92 exynos_drm_display_power(encoder, mode);
93 exynos_encoder->dpms = mode;
95 case DRM_MODE_DPMS_STANDBY:
96 case DRM_MODE_DPMS_SUSPEND:
97 case DRM_MODE_DPMS_OFF:
98 exynos_drm_display_power(encoder, mode);
99 exynos_encoder->dpms = mode;
102 DRM_ERROR("unspecified mode %d\n", mode);
106 mutex_unlock(&dev->struct_mutex);
110 exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder,
111 const struct drm_display_mode *mode,
112 struct drm_display_mode *adjusted_mode)
114 struct drm_device *dev = encoder->dev;
115 struct drm_connector *connector;
116 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
117 struct exynos_drm_manager_ops *manager_ops = manager->ops;
119 DRM_DEBUG_KMS("%s\n", __FILE__);
121 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
122 if (connector->encoder == encoder)
123 if (manager_ops && manager_ops->mode_fixup)
124 manager_ops->mode_fixup(manager->dev, connector,
125 mode, adjusted_mode);
131 static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder,
132 struct drm_display_mode *mode,
133 struct drm_display_mode *adjusted_mode)
135 struct drm_device *dev = encoder->dev;
136 struct drm_connector *connector;
137 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
138 struct exynos_drm_manager_ops *manager_ops = manager->ops;
140 DRM_DEBUG_KMS("%s\n", __FILE__);
142 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
143 if (connector->encoder == encoder)
144 if (manager_ops && manager_ops->mode_set)
145 manager_ops->mode_set(manager->dev,
150 static void exynos_drm_encoder_prepare(struct drm_encoder *encoder)
152 DRM_DEBUG_KMS("%s\n", __FILE__);
154 /* drm framework doesn't check NULL. */
157 static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
159 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
160 struct exynos_drm_manager_ops *manager_ops = manager->ops;
162 DRM_DEBUG_KMS("%s\n", __FILE__);
164 if (manager_ops && manager_ops->commit)
165 manager_ops->commit(manager->dev);
168 static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
169 .dpms = exynos_drm_encoder_dpms,
170 .mode_fixup = exynos_drm_encoder_mode_fixup,
171 .mode_set = exynos_drm_encoder_mode_set,
172 .prepare = exynos_drm_encoder_prepare,
173 .commit = exynos_drm_encoder_commit,
176 static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)
178 struct exynos_drm_encoder *exynos_encoder =
179 to_exynos_encoder(encoder);
181 DRM_DEBUG_KMS("%s\n", __FILE__);
183 exynos_encoder->manager->pipe = -1;
185 drm_encoder_cleanup(encoder);
186 kfree(exynos_encoder);
189 static struct drm_encoder_funcs exynos_encoder_funcs = {
190 .destroy = exynos_drm_encoder_destroy,
193 static unsigned int exynos_drm_encoder_clones(struct drm_encoder *encoder)
195 struct drm_encoder *clone;
196 struct drm_device *dev = encoder->dev;
197 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
198 struct exynos_drm_display_ops *display_ops =
199 exynos_encoder->manager->display_ops;
200 unsigned int clone_mask = 0;
203 list_for_each_entry(clone, &dev->mode_config.encoder_list, head) {
204 switch (display_ops->type) {
205 case EXYNOS_DISPLAY_TYPE_LCD:
206 case EXYNOS_DISPLAY_TYPE_HDMI:
207 case EXYNOS_DISPLAY_TYPE_VIDI:
208 clone_mask |= (1 << (cnt++));
218 void exynos_drm_encoder_setup(struct drm_device *dev)
220 struct drm_encoder *encoder;
222 DRM_DEBUG_KMS("%s\n", __FILE__);
224 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
225 encoder->possible_clones = exynos_drm_encoder_clones(encoder);
229 exynos_drm_encoder_create(struct drm_device *dev,
230 struct exynos_drm_manager *manager,
231 unsigned int possible_crtcs)
233 struct drm_encoder *encoder;
234 struct exynos_drm_encoder *exynos_encoder;
236 DRM_DEBUG_KMS("%s\n", __FILE__);
238 if (!manager || !possible_crtcs)
244 exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL);
245 if (!exynos_encoder) {
246 DRM_ERROR("failed to allocate encoder\n");
250 exynos_encoder->dpms = DRM_MODE_DPMS_OFF;
251 exynos_encoder->manager = manager;
252 encoder = &exynos_encoder->drm_encoder;
253 encoder->possible_crtcs = possible_crtcs;
255 DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
257 drm_encoder_init(dev, encoder, &exynos_encoder_funcs,
258 DRM_MODE_ENCODER_TMDS);
260 drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs);
262 DRM_DEBUG_KMS("encoder has been created\n");
267 struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder)
269 return to_exynos_encoder(encoder)->manager;
272 void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data,
273 void (*fn)(struct drm_encoder *, void *))
275 struct drm_device *dev = crtc->dev;
276 struct drm_encoder *encoder;
277 struct exynos_drm_private *private = dev->dev_private;
278 struct exynos_drm_manager *manager;
280 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
282 * if crtc is detached from encoder, check pipe,
283 * otherwise check crtc attached to encoder
285 if (!encoder->crtc) {
286 manager = to_exynos_encoder(encoder)->manager;
287 if (manager->pipe < 0 ||
288 private->crtc[manager->pipe] != crtc)
291 if (encoder->crtc != crtc)
299 void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data)
301 struct exynos_drm_manager *manager =
302 to_exynos_encoder(encoder)->manager;
303 struct exynos_drm_manager_ops *manager_ops = manager->ops;
304 int crtc = *(int *)data;
306 if (manager->pipe == -1)
307 manager->pipe = crtc;
309 if (manager_ops->enable_vblank)
310 manager_ops->enable_vblank(manager->dev);
313 void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
315 struct exynos_drm_manager *manager =
316 to_exynos_encoder(encoder)->manager;
317 struct exynos_drm_manager_ops *manager_ops = manager->ops;
318 int crtc = *(int *)data;
320 if (manager->pipe == -1)
321 manager->pipe = crtc;
323 if (manager_ops->disable_vblank)
324 manager_ops->disable_vblank(manager->dev);
327 void exynos_drm_encoder_crtc_plane_commit(struct drm_encoder *encoder,
330 struct exynos_drm_manager *manager =
331 to_exynos_encoder(encoder)->manager;
332 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
333 int zpos = DEFAULT_ZPOS;
338 if (overlay_ops && overlay_ops->commit)
339 overlay_ops->commit(manager->dev, zpos);
342 void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data)
344 struct exynos_drm_manager *manager =
345 to_exynos_encoder(encoder)->manager;
346 int crtc = *(int *)data;
347 int zpos = DEFAULT_ZPOS;
349 DRM_DEBUG_KMS("%s\n", __FILE__);
352 * when crtc is detached from encoder, this pipe is used
353 * to select manager operation
355 manager->pipe = crtc;
357 exynos_drm_encoder_crtc_plane_commit(encoder, &zpos);
360 void exynos_drm_encoder_dpms_from_crtc(struct drm_encoder *encoder, void *data)
362 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
363 int mode = *(int *)data;
365 DRM_DEBUG_KMS("%s\n", __FILE__);
367 exynos_drm_encoder_dpms(encoder, mode);
369 exynos_encoder->dpms = mode;
372 void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
374 struct drm_device *dev = encoder->dev;
375 struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder);
376 struct exynos_drm_manager *manager = exynos_encoder->manager;
377 struct exynos_drm_manager_ops *manager_ops = manager->ops;
378 struct drm_connector *connector;
379 int mode = *(int *)data;
381 DRM_DEBUG_KMS("%s\n", __FILE__);
383 if (manager_ops && manager_ops->dpms)
384 manager_ops->dpms(manager->dev, mode);
387 * set current dpms mode to the connector connected to
388 * current encoder. connector->dpms would be checked
389 * at drm_helper_connector_dpms()
391 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
392 if (connector->encoder == encoder)
393 connector->dpms = mode;
396 * if this condition is ok then it means that the crtc is already
397 * detached from encoder and last function for detaching is properly
398 * done, so clear pipe from manager to prevent repeated call.
400 if (mode > DRM_MODE_DPMS_ON) {
406 void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data)
408 struct exynos_drm_manager *manager =
409 to_exynos_encoder(encoder)->manager;
410 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
411 struct exynos_drm_overlay *overlay = data;
413 if (overlay_ops && overlay_ops->mode_set)
414 overlay_ops->mode_set(manager->dev, overlay);
417 void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data)
419 struct exynos_drm_manager *manager =
420 to_exynos_encoder(encoder)->manager;
421 struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops;
422 int zpos = DEFAULT_ZPOS;
429 if (overlay_ops && overlay_ops->disable)
430 overlay_ops->disable(manager->dev, zpos);