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_fb.h"
34 #include "exynos_drm_encoder.h"
35 #include "exynos_drm_buf.h"
37 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
41 * Exynos specific crtc postion structure.
43 * @fb_x: offset x on a framebuffer to be displyed
44 * - the unit is screen coordinates.
45 * @fb_y: offset y on a framebuffer to be displayed
46 * - the unit is screen coordinates.
47 * @crtc_x: offset x on hardware screen.
48 * @crtc_y: offset y on hardware screen.
49 * @crtc_w: width of hardware screen.
50 * @crtc_h: height of hardware screen.
52 struct exynos_drm_crtc_pos {
62 * Exynos specific crtc structure.
64 * @drm_crtc: crtc object.
65 * @overlay: contain information common to display controller and hdmi and
66 * contents of this overlay object would be copied to sub driver size.
67 * @pipe: a crtc index created at load() with a new crtc object creation
68 * and the crtc object would be set to private->crtc array
69 * to get a crtc object corresponding to this pipe from private->crtc
70 * array when irq interrupt occured. the reason of using this pipe is that
71 * drm framework doesn't support multiple irq yet.
72 * we can refer to the crtc to current hardware interrupt occured through
75 struct exynos_drm_crtc {
76 struct drm_crtc drm_crtc;
77 struct exynos_drm_overlay overlay;
81 static void exynos_drm_crtc_apply(struct drm_crtc *crtc)
83 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
84 struct exynos_drm_overlay *overlay = &exynos_crtc->overlay;
86 exynos_drm_fn_encoder(crtc, overlay,
87 exynos_drm_encoder_crtc_mode_set);
88 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
89 exynos_drm_encoder_crtc_commit);
92 static int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
93 struct drm_framebuffer *fb,
94 struct drm_display_mode *mode,
95 struct exynos_drm_crtc_pos *pos)
97 struct exynos_drm_buf_entry *entry;
98 unsigned int actual_w;
99 unsigned int actual_h;
101 entry = exynos_drm_fb_get_buf(fb);
103 DRM_LOG_KMS("entry is null.\n");
107 overlay->paddr = entry->paddr;
108 overlay->vaddr = entry->vaddr;
110 DRM_DEBUG_KMS("vaddr = 0x%lx, paddr = 0x%lx\n",
111 (unsigned long)overlay->vaddr,
112 (unsigned long)overlay->paddr);
114 actual_w = min((mode->hdisplay - pos->crtc_x), pos->crtc_w);
115 actual_h = min((mode->vdisplay - pos->crtc_y), pos->crtc_h);
117 /* set drm framebuffer data. */
118 overlay->fb_x = pos->fb_x;
119 overlay->fb_y = pos->fb_y;
120 overlay->fb_width = fb->width;
121 overlay->fb_height = fb->height;
122 overlay->bpp = fb->bits_per_pixel;
123 overlay->pitch = fb->pitch;
125 /* set overlay range to be displayed. */
126 overlay->crtc_x = pos->crtc_x;
127 overlay->crtc_y = pos->crtc_y;
128 overlay->crtc_width = actual_w;
129 overlay->crtc_height = actual_h;
131 /* set drm mode data. */
132 overlay->mode_width = mode->hdisplay;
133 overlay->mode_height = mode->vdisplay;
134 overlay->refresh = mode->vrefresh;
135 overlay->scan_flag = mode->flags;
137 DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)",
138 overlay->crtc_x, overlay->crtc_y,
139 overlay->crtc_width, overlay->crtc_height);
144 static int exynos_drm_crtc_update(struct drm_crtc *crtc)
146 struct exynos_drm_crtc *exynos_crtc;
147 struct exynos_drm_overlay *overlay;
148 struct exynos_drm_crtc_pos pos;
149 struct drm_display_mode *mode = &crtc->mode;
150 struct drm_framebuffer *fb = crtc->fb;
155 exynos_crtc = to_exynos_crtc(crtc);
156 overlay = &exynos_crtc->overlay;
158 memset(&pos, 0, sizeof(struct exynos_drm_crtc_pos));
160 /* it means the offset of framebuffer to be displayed. */
164 /* OSD position to be displayed. */
167 pos.crtc_w = fb->width - crtc->x;
168 pos.crtc_h = fb->height - crtc->y;
170 return exynos_drm_overlay_update(overlay, crtc->fb, mode, &pos);
173 static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
175 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
177 DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
180 case DRM_MODE_DPMS_ON:
181 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
182 exynos_drm_encoder_crtc_commit);
184 case DRM_MODE_DPMS_STANDBY:
185 case DRM_MODE_DPMS_SUSPEND:
186 case DRM_MODE_DPMS_OFF:
188 exynos_drm_fn_encoder(crtc, NULL,
189 exynos_drm_encoder_crtc_disable);
192 DRM_DEBUG_KMS("unspecified mode %d\n", mode);
197 static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
199 DRM_DEBUG_KMS("%s\n", __FILE__);
201 /* drm framework doesn't check NULL. */
204 static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
206 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
208 DRM_DEBUG_KMS("%s\n", __FILE__);
210 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
211 exynos_drm_encoder_crtc_commit);
215 exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
216 struct drm_display_mode *mode,
217 struct drm_display_mode *adjusted_mode)
219 DRM_DEBUG_KMS("%s\n", __FILE__);
221 /* drm framework doesn't check NULL */
226 exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
227 struct drm_display_mode *adjusted_mode, int x, int y,
228 struct drm_framebuffer *old_fb)
230 DRM_DEBUG_KMS("%s\n", __FILE__);
232 mode = adjusted_mode;
234 return exynos_drm_crtc_update(crtc);
237 static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
238 struct drm_framebuffer *old_fb)
242 DRM_DEBUG_KMS("%s\n", __FILE__);
244 ret = exynos_drm_crtc_update(crtc);
248 exynos_drm_crtc_apply(crtc);
253 static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc)
255 DRM_DEBUG_KMS("%s\n", __FILE__);
256 /* drm framework doesn't check NULL */
259 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
260 .dpms = exynos_drm_crtc_dpms,
261 .prepare = exynos_drm_crtc_prepare,
262 .commit = exynos_drm_crtc_commit,
263 .mode_fixup = exynos_drm_crtc_mode_fixup,
264 .mode_set = exynos_drm_crtc_mode_set,
265 .mode_set_base = exynos_drm_crtc_mode_set_base,
266 .load_lut = exynos_drm_crtc_load_lut,
269 static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
270 struct drm_framebuffer *fb,
271 struct drm_pending_vblank_event *event)
273 struct drm_device *dev = crtc->dev;
274 struct exynos_drm_private *dev_priv = dev->dev_private;
275 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
276 struct drm_framebuffer *old_fb = crtc->fb;
279 DRM_DEBUG_KMS("%s\n", __FILE__);
281 mutex_lock(&dev->struct_mutex);
285 * the pipe from user always is 0 so we can set pipe number
286 * of current owner to event.
288 event->pipe = exynos_crtc->pipe;
290 list_add_tail(&event->base.link,
291 &dev_priv->pageflip_event_list);
293 ret = drm_vblank_get(dev, exynos_crtc->pipe);
295 DRM_DEBUG("failed to acquire vblank counter\n");
296 list_del(&event->base.link);
302 ret = exynos_drm_crtc_update(crtc);
305 drm_vblank_put(dev, exynos_crtc->pipe);
306 list_del(&event->base.link);
312 * the values related to a buffer of the drm framebuffer
313 * to be applied should be set at here. because these values
314 * first, are set to shadow registers and then to
315 * real registers at vsync front porch period.
317 exynos_drm_crtc_apply(crtc);
320 mutex_unlock(&dev->struct_mutex);
324 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
326 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
327 struct exynos_drm_private *private = crtc->dev->dev_private;
329 DRM_DEBUG_KMS("%s\n", __FILE__);
331 private->crtc[exynos_crtc->pipe] = NULL;
333 drm_crtc_cleanup(crtc);
337 static struct drm_crtc_funcs exynos_crtc_funcs = {
338 .set_config = drm_crtc_helper_set_config,
339 .page_flip = exynos_drm_crtc_page_flip,
340 .destroy = exynos_drm_crtc_destroy,
343 struct exynos_drm_overlay *get_exynos_drm_overlay(struct drm_device *dev,
344 struct drm_crtc *crtc)
346 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
348 return &exynos_crtc->overlay;
351 int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr)
353 struct exynos_drm_crtc *exynos_crtc;
354 struct exynos_drm_private *private = dev->dev_private;
355 struct drm_crtc *crtc;
357 DRM_DEBUG_KMS("%s\n", __FILE__);
359 exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
361 DRM_ERROR("failed to allocate exynos crtc\n");
365 exynos_crtc->pipe = nr;
366 crtc = &exynos_crtc->drm_crtc;
368 private->crtc[nr] = crtc;
370 drm_crtc_init(dev, crtc, &exynos_crtc_funcs);
371 drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
376 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
378 struct exynos_drm_private *private = dev->dev_private;
380 DRM_DEBUG_KMS("%s\n", __FILE__);
382 exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
383 exynos_drm_enable_vblank);
388 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
390 struct exynos_drm_private *private = dev->dev_private;
392 DRM_DEBUG_KMS("%s\n", __FILE__);
394 exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
395 exynos_drm_disable_vblank);
398 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
399 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
400 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
401 MODULE_DESCRIPTION("Samsung SoC DRM CRTC Driver");
402 MODULE_LICENSE("GPL");