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_crtc.h"
33 #include "exynos_drm_drv.h"
34 #include "exynos_drm_fb.h"
35 #include "exynos_drm_encoder.h"
36 #include "exynos_drm_gem.h"
37 #include "exynos_drm_buf.h"
39 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
43 * Exynos specific crtc structure.
45 * @drm_crtc: crtc object.
46 * @overlay: contain information common to display controller and hdmi and
47 * contents of this overlay object would be copied to sub driver size.
48 * @pipe: a crtc index created at load() with a new crtc object creation
49 * and the crtc object would be set to private->crtc array
50 * to get a crtc object corresponding to this pipe from private->crtc
51 * array when irq interrupt occured. the reason of using this pipe is that
52 * drm framework doesn't support multiple irq yet.
53 * we can refer to the crtc to current hardware interrupt occured through
56 struct exynos_drm_crtc {
57 struct drm_crtc drm_crtc;
58 struct exynos_drm_overlay overlay;
62 static void exynos_drm_crtc_apply(struct drm_crtc *crtc)
64 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
65 struct exynos_drm_overlay *overlay = &exynos_crtc->overlay;
67 exynos_drm_fn_encoder(crtc, overlay,
68 exynos_drm_encoder_crtc_mode_set);
69 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
70 exynos_drm_encoder_crtc_commit);
73 int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
74 struct drm_framebuffer *fb,
75 struct drm_display_mode *mode,
76 struct exynos_drm_crtc_pos *pos)
78 struct exynos_drm_gem_buf *buffer;
79 unsigned int actual_w;
80 unsigned int actual_h;
82 buffer = exynos_drm_fb_get_buf(fb);
84 DRM_LOG_KMS("buffer is null.\n");
88 overlay->dma_addr = buffer->dma_addr;
89 overlay->vaddr = buffer->kvaddr;
91 DRM_DEBUG_KMS("vaddr = 0x%lx, dma_addr = 0x%lx\n",
92 (unsigned long)overlay->vaddr,
93 (unsigned long)overlay->dma_addr);
95 actual_w = min((mode->hdisplay - pos->crtc_x), pos->crtc_w);
96 actual_h = min((mode->vdisplay - pos->crtc_y), pos->crtc_h);
98 /* set drm framebuffer data. */
99 overlay->fb_x = pos->fb_x;
100 overlay->fb_y = pos->fb_y;
101 overlay->fb_width = fb->width;
102 overlay->fb_height = fb->height;
103 overlay->bpp = fb->bits_per_pixel;
104 overlay->pitch = fb->pitch;
106 /* set overlay range to be displayed. */
107 overlay->crtc_x = pos->crtc_x;
108 overlay->crtc_y = pos->crtc_y;
109 overlay->crtc_width = actual_w;
110 overlay->crtc_height = actual_h;
112 /* set drm mode data. */
113 overlay->mode_width = mode->hdisplay;
114 overlay->mode_height = mode->vdisplay;
115 overlay->refresh = mode->vrefresh;
116 overlay->scan_flag = mode->flags;
118 DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)",
119 overlay->crtc_x, overlay->crtc_y,
120 overlay->crtc_width, overlay->crtc_height);
125 static int exynos_drm_crtc_update(struct drm_crtc *crtc)
127 struct exynos_drm_crtc *exynos_crtc;
128 struct exynos_drm_overlay *overlay;
129 struct exynos_drm_crtc_pos pos;
130 struct drm_display_mode *mode = &crtc->mode;
131 struct drm_framebuffer *fb = crtc->fb;
136 exynos_crtc = to_exynos_crtc(crtc);
137 overlay = &exynos_crtc->overlay;
139 memset(&pos, 0, sizeof(struct exynos_drm_crtc_pos));
141 /* it means the offset of framebuffer to be displayed. */
145 /* OSD position to be displayed. */
148 pos.crtc_w = fb->width - crtc->x;
149 pos.crtc_h = fb->height - crtc->y;
151 return exynos_drm_overlay_update(overlay, crtc->fb, mode, &pos);
154 static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
156 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
158 DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
161 case DRM_MODE_DPMS_ON:
162 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
163 exynos_drm_encoder_crtc_commit);
165 case DRM_MODE_DPMS_STANDBY:
166 case DRM_MODE_DPMS_SUSPEND:
167 case DRM_MODE_DPMS_OFF:
169 exynos_drm_fn_encoder(crtc, NULL,
170 exynos_drm_encoder_crtc_disable);
173 DRM_DEBUG_KMS("unspecified mode %d\n", mode);
178 static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
180 DRM_DEBUG_KMS("%s\n", __FILE__);
182 /* drm framework doesn't check NULL. */
185 static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
187 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
189 DRM_DEBUG_KMS("%s\n", __FILE__);
191 exynos_drm_fn_encoder(crtc, &exynos_crtc->pipe,
192 exynos_drm_encoder_crtc_commit);
196 exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
197 struct drm_display_mode *mode,
198 struct drm_display_mode *adjusted_mode)
200 DRM_DEBUG_KMS("%s\n", __FILE__);
202 /* drm framework doesn't check NULL */
207 exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
208 struct drm_display_mode *adjusted_mode, int x, int y,
209 struct drm_framebuffer *old_fb)
211 DRM_DEBUG_KMS("%s\n", __FILE__);
213 mode = adjusted_mode;
215 return exynos_drm_crtc_update(crtc);
218 static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
219 struct drm_framebuffer *old_fb)
223 DRM_DEBUG_KMS("%s\n", __FILE__);
225 ret = exynos_drm_crtc_update(crtc);
229 exynos_drm_crtc_apply(crtc);
234 static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc)
236 DRM_DEBUG_KMS("%s\n", __FILE__);
237 /* drm framework doesn't check NULL */
240 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
241 .dpms = exynos_drm_crtc_dpms,
242 .prepare = exynos_drm_crtc_prepare,
243 .commit = exynos_drm_crtc_commit,
244 .mode_fixup = exynos_drm_crtc_mode_fixup,
245 .mode_set = exynos_drm_crtc_mode_set,
246 .mode_set_base = exynos_drm_crtc_mode_set_base,
247 .load_lut = exynos_drm_crtc_load_lut,
250 static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
251 struct drm_framebuffer *fb,
252 struct drm_pending_vblank_event *event)
254 struct drm_device *dev = crtc->dev;
255 struct exynos_drm_private *dev_priv = dev->dev_private;
256 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
257 struct drm_framebuffer *old_fb = crtc->fb;
260 DRM_DEBUG_KMS("%s\n", __FILE__);
262 mutex_lock(&dev->struct_mutex);
266 * the pipe from user always is 0 so we can set pipe number
267 * of current owner to event.
269 event->pipe = exynos_crtc->pipe;
271 list_add_tail(&event->base.link,
272 &dev_priv->pageflip_event_list);
274 ret = drm_vblank_get(dev, exynos_crtc->pipe);
276 DRM_DEBUG("failed to acquire vblank counter\n");
277 list_del(&event->base.link);
283 ret = exynos_drm_crtc_update(crtc);
286 drm_vblank_put(dev, exynos_crtc->pipe);
287 list_del(&event->base.link);
293 * the values related to a buffer of the drm framebuffer
294 * to be applied should be set at here. because these values
295 * first, are set to shadow registers and then to
296 * real registers at vsync front porch period.
298 exynos_drm_crtc_apply(crtc);
301 mutex_unlock(&dev->struct_mutex);
305 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
307 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
308 struct exynos_drm_private *private = crtc->dev->dev_private;
310 DRM_DEBUG_KMS("%s\n", __FILE__);
312 private->crtc[exynos_crtc->pipe] = NULL;
314 drm_crtc_cleanup(crtc);
318 static struct drm_crtc_funcs exynos_crtc_funcs = {
319 .set_config = drm_crtc_helper_set_config,
320 .page_flip = exynos_drm_crtc_page_flip,
321 .destroy = exynos_drm_crtc_destroy,
324 struct exynos_drm_overlay *get_exynos_drm_overlay(struct drm_device *dev,
325 struct drm_crtc *crtc)
327 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
329 return &exynos_crtc->overlay;
332 int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr)
334 struct exynos_drm_crtc *exynos_crtc;
335 struct exynos_drm_private *private = dev->dev_private;
336 struct drm_crtc *crtc;
338 DRM_DEBUG_KMS("%s\n", __FILE__);
340 exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
342 DRM_ERROR("failed to allocate exynos crtc\n");
346 exynos_crtc->pipe = nr;
347 crtc = &exynos_crtc->drm_crtc;
349 private->crtc[nr] = crtc;
351 drm_crtc_init(dev, crtc, &exynos_crtc_funcs);
352 drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
357 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
359 struct exynos_drm_private *private = dev->dev_private;
361 DRM_DEBUG_KMS("%s\n", __FILE__);
363 exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
364 exynos_drm_enable_vblank);
369 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
371 struct exynos_drm_private *private = dev->dev_private;
373 DRM_DEBUG_KMS("%s\n", __FILE__);
375 exynos_drm_fn_encoder(private->crtc[crtc], &crtc,
376 exynos_drm_disable_vblank);
379 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
380 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
381 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
382 MODULE_DESCRIPTION("Samsung SoC DRM CRTC Driver");
383 MODULE_LICENSE("GPL");