11c248b7dSInki Dae /* exynos_drm_crtc.c 21c248b7dSInki Dae * 31c248b7dSInki Dae * Copyright (c) 2011 Samsung Electronics Co., Ltd. 41c248b7dSInki Dae * Authors: 51c248b7dSInki Dae * Inki Dae <inki.dae@samsung.com> 61c248b7dSInki Dae * Joonyoung Shim <jy0922.shim@samsung.com> 71c248b7dSInki Dae * Seung-Woo Kim <sw0312.kim@samsung.com> 81c248b7dSInki Dae * 91c248b7dSInki Dae * Permission is hereby granted, free of charge, to any person obtaining a 101c248b7dSInki Dae * copy of this software and associated documentation files (the "Software"), 111c248b7dSInki Dae * to deal in the Software without restriction, including without limitation 121c248b7dSInki Dae * the rights to use, copy, modify, merge, publish, distribute, sublicense, 131c248b7dSInki Dae * and/or sell copies of the Software, and to permit persons to whom the 141c248b7dSInki Dae * Software is furnished to do so, subject to the following conditions: 151c248b7dSInki Dae * 161c248b7dSInki Dae * The above copyright notice and this permission notice (including the next 171c248b7dSInki Dae * paragraph) shall be included in all copies or substantial portions of the 181c248b7dSInki Dae * Software. 191c248b7dSInki Dae * 201c248b7dSInki Dae * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 211c248b7dSInki Dae * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 221c248b7dSInki Dae * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 231c248b7dSInki Dae * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 241c248b7dSInki Dae * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 251c248b7dSInki Dae * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 261c248b7dSInki Dae * OTHER DEALINGS IN THE SOFTWARE. 271c248b7dSInki Dae */ 281c248b7dSInki Dae 291c248b7dSInki Dae #include "drmP.h" 301c248b7dSInki Dae #include "drm_crtc_helper.h" 311c248b7dSInki Dae 321c248b7dSInki Dae #include "exynos_drm_drv.h" 331c248b7dSInki Dae #include "exynos_drm_encoder.h" 34b5d2eb3bSJoonyoung Shim #include "exynos_drm_plane.h" 351c248b7dSInki Dae 361c248b7dSInki Dae #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\ 371c248b7dSInki Dae drm_crtc) 381c248b7dSInki Dae 391c248b7dSInki Dae /* 401c248b7dSInki Dae * Exynos specific crtc structure. 411c248b7dSInki Dae * 421c248b7dSInki Dae * @drm_crtc: crtc object. 43b5d2eb3bSJoonyoung Shim * @drm_plane: pointer of private plane object for this crtc 441c248b7dSInki Dae * @pipe: a crtc index created at load() with a new crtc object creation 451c248b7dSInki Dae * and the crtc object would be set to private->crtc array 461c248b7dSInki Dae * to get a crtc object corresponding to this pipe from private->crtc 471c248b7dSInki Dae * array when irq interrupt occured. the reason of using this pipe is that 481c248b7dSInki Dae * drm framework doesn't support multiple irq yet. 491c248b7dSInki Dae * we can refer to the crtc to current hardware interrupt occured through 501c248b7dSInki Dae * this pipe value. 51ec05da95SInki Dae * @dpms: store the crtc dpms value 521c248b7dSInki Dae */ 531c248b7dSInki Dae struct exynos_drm_crtc { 541c248b7dSInki Dae struct drm_crtc drm_crtc; 55b5d2eb3bSJoonyoung Shim struct drm_plane *plane; 561c248b7dSInki Dae unsigned int pipe; 57ec05da95SInki Dae unsigned int dpms; 581c248b7dSInki Dae }; 591c248b7dSInki Dae 601c248b7dSInki Dae static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode) 611c248b7dSInki Dae { 62ec05da95SInki Dae struct drm_device *dev = crtc->dev; 63d2716c89SJoonyoung Shim struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 641c248b7dSInki Dae 65d2716c89SJoonyoung Shim DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode); 66d2716c89SJoonyoung Shim 67ec05da95SInki Dae if (exynos_crtc->dpms == mode) { 68ec05da95SInki Dae DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n"); 69ec05da95SInki Dae return; 70ec05da95SInki Dae } 71ec05da95SInki Dae 72ec05da95SInki Dae mutex_lock(&dev->struct_mutex); 73ec05da95SInki Dae 74cf5188acSJoonyoung Shim exynos_drm_fn_encoder(crtc, &mode, exynos_drm_encoder_crtc_dpms); 75ec05da95SInki Dae exynos_crtc->dpms = mode; 76ec05da95SInki Dae 77ec05da95SInki Dae mutex_unlock(&dev->struct_mutex); 781c248b7dSInki Dae } 791c248b7dSInki Dae 801c248b7dSInki Dae static void exynos_drm_crtc_prepare(struct drm_crtc *crtc) 811c248b7dSInki Dae { 821c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 831c248b7dSInki Dae 841c248b7dSInki Dae /* drm framework doesn't check NULL. */ 851c248b7dSInki Dae } 861c248b7dSInki Dae 871c248b7dSInki Dae static void exynos_drm_crtc_commit(struct drm_crtc *crtc) 881c248b7dSInki Dae { 89d2716c89SJoonyoung Shim struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 90d2716c89SJoonyoung Shim 911c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 921c248b7dSInki Dae 934070d212SJoonyoung Shim exynos_plane_commit(exynos_crtc->plane); 94cf5188acSJoonyoung Shim exynos_plane_dpms(exynos_crtc->plane, DRM_MODE_DPMS_ON); 951c248b7dSInki Dae } 961c248b7dSInki Dae 971c248b7dSInki Dae static bool 981c248b7dSInki Dae exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc, 99e811f5aeSLaurent Pinchart const struct drm_display_mode *mode, 1001c248b7dSInki Dae struct drm_display_mode *adjusted_mode) 1011c248b7dSInki Dae { 1021c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1031c248b7dSInki Dae 1041c248b7dSInki Dae /* drm framework doesn't check NULL */ 1051c248b7dSInki Dae return true; 1061c248b7dSInki Dae } 1071c248b7dSInki Dae 1081c248b7dSInki Dae static int 1091c248b7dSInki Dae exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, 1101c248b7dSInki Dae struct drm_display_mode *adjusted_mode, int x, int y, 1111c248b7dSInki Dae struct drm_framebuffer *old_fb) 1121c248b7dSInki Dae { 113aeb29224SJoonyoung Shim struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 1144070d212SJoonyoung Shim struct drm_plane *plane = exynos_crtc->plane; 1154070d212SJoonyoung Shim unsigned int crtc_w; 1164070d212SJoonyoung Shim unsigned int crtc_h; 117d249ce02SJoonyoung Shim int pipe = exynos_crtc->pipe; 118aeb29224SJoonyoung Shim int ret; 119aeb29224SJoonyoung Shim 1201c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1211c248b7dSInki Dae 122bebab8ffSJoonyoung Shim exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON); 123bebab8ffSJoonyoung Shim 1241de425b0SInki Dae /* 1251de425b0SInki Dae * copy the mode data adjusted by mode_fixup() into crtc->mode 1261de425b0SInki Dae * so that hardware can be seet to proper mode. 1271de425b0SInki Dae */ 1281de425b0SInki Dae memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode)); 1291c248b7dSInki Dae 1304070d212SJoonyoung Shim crtc_w = crtc->fb->width - x; 1314070d212SJoonyoung Shim crtc_h = crtc->fb->height - y; 1324070d212SJoonyoung Shim 1334070d212SJoonyoung Shim ret = exynos_plane_mode_set(plane, crtc, crtc->fb, 0, 0, crtc_w, crtc_h, 1344070d212SJoonyoung Shim x, y, crtc_w, crtc_h); 135aeb29224SJoonyoung Shim if (ret) 136aeb29224SJoonyoung Shim return ret; 137aeb29224SJoonyoung Shim 1384070d212SJoonyoung Shim plane->crtc = crtc; 1394070d212SJoonyoung Shim plane->fb = crtc->fb; 1404070d212SJoonyoung Shim 141d249ce02SJoonyoung Shim exynos_drm_fn_encoder(crtc, &pipe, exynos_drm_encoder_crtc_pipe); 142aeb29224SJoonyoung Shim 143aeb29224SJoonyoung Shim return 0; 1441c248b7dSInki Dae } 1451c248b7dSInki Dae 1461c248b7dSInki Dae static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, 1471c248b7dSInki Dae struct drm_framebuffer *old_fb) 1481c248b7dSInki Dae { 1494070d212SJoonyoung Shim struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 1504070d212SJoonyoung Shim struct drm_plane *plane = exynos_crtc->plane; 1514070d212SJoonyoung Shim unsigned int crtc_w; 1524070d212SJoonyoung Shim unsigned int crtc_h; 1531c248b7dSInki Dae int ret; 1541c248b7dSInki Dae 1551c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1561c248b7dSInki Dae 1574070d212SJoonyoung Shim crtc_w = crtc->fb->width - x; 1584070d212SJoonyoung Shim crtc_h = crtc->fb->height - y; 1594070d212SJoonyoung Shim 1604070d212SJoonyoung Shim ret = exynos_plane_mode_set(plane, crtc, crtc->fb, 0, 0, crtc_w, crtc_h, 1614070d212SJoonyoung Shim x, y, crtc_w, crtc_h); 1621c248b7dSInki Dae if (ret) 1631c248b7dSInki Dae return ret; 1641c248b7dSInki Dae 165bebab8ffSJoonyoung Shim exynos_drm_crtc_commit(crtc); 1661c248b7dSInki Dae 1674070d212SJoonyoung Shim return 0; 1681c248b7dSInki Dae } 1691c248b7dSInki Dae 1701c248b7dSInki Dae static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc) 1711c248b7dSInki Dae { 1721c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1731c248b7dSInki Dae /* drm framework doesn't check NULL */ 1741c248b7dSInki Dae } 1751c248b7dSInki Dae 1761c248b7dSInki Dae static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = { 1771c248b7dSInki Dae .dpms = exynos_drm_crtc_dpms, 1781c248b7dSInki Dae .prepare = exynos_drm_crtc_prepare, 1791c248b7dSInki Dae .commit = exynos_drm_crtc_commit, 1801c248b7dSInki Dae .mode_fixup = exynos_drm_crtc_mode_fixup, 1811c248b7dSInki Dae .mode_set = exynos_drm_crtc_mode_set, 1821c248b7dSInki Dae .mode_set_base = exynos_drm_crtc_mode_set_base, 1831c248b7dSInki Dae .load_lut = exynos_drm_crtc_load_lut, 1841c248b7dSInki Dae }; 1851c248b7dSInki Dae 1861c248b7dSInki Dae static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc, 1871c248b7dSInki Dae struct drm_framebuffer *fb, 1881c248b7dSInki Dae struct drm_pending_vblank_event *event) 1891c248b7dSInki Dae { 1901c248b7dSInki Dae struct drm_device *dev = crtc->dev; 1911c248b7dSInki Dae struct exynos_drm_private *dev_priv = dev->dev_private; 1921c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 1931c248b7dSInki Dae struct drm_framebuffer *old_fb = crtc->fb; 1941c248b7dSInki Dae int ret = -EINVAL; 1951c248b7dSInki Dae 1961c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1971c248b7dSInki Dae 1981c248b7dSInki Dae mutex_lock(&dev->struct_mutex); 1991c248b7dSInki Dae 200ccf4d883SInki Dae if (event) { 201ccf4d883SInki Dae /* 202ccf4d883SInki Dae * the pipe from user always is 0 so we can set pipe number 203ccf4d883SInki Dae * of current owner to event. 204ccf4d883SInki Dae */ 205ccf4d883SInki Dae event->pipe = exynos_crtc->pipe; 206ccf4d883SInki Dae 2071c248b7dSInki Dae ret = drm_vblank_get(dev, exynos_crtc->pipe); 2081c248b7dSInki Dae if (ret) { 2091c248b7dSInki Dae DRM_DEBUG("failed to acquire vblank counter\n"); 210ccf4d883SInki Dae list_del(&event->base.link); 211ccf4d883SInki Dae 2121c248b7dSInki Dae goto out; 2131c248b7dSInki Dae } 2141c248b7dSInki Dae 215c5614ae3SInki Dae list_add_tail(&event->base.link, 216c5614ae3SInki Dae &dev_priv->pageflip_event_list); 217c5614ae3SInki Dae 2181c248b7dSInki Dae crtc->fb = fb; 2194070d212SJoonyoung Shim ret = exynos_drm_crtc_mode_set_base(crtc, crtc->x, crtc->y, 2204070d212SJoonyoung Shim NULL); 2211c248b7dSInki Dae if (ret) { 2221c248b7dSInki Dae crtc->fb = old_fb; 2231c248b7dSInki Dae drm_vblank_put(dev, exynos_crtc->pipe); 224ccf4d883SInki Dae list_del(&event->base.link); 2251c248b7dSInki Dae 2261c248b7dSInki Dae goto out; 2271c248b7dSInki Dae } 2281c248b7dSInki Dae } 2291c248b7dSInki Dae out: 2301c248b7dSInki Dae mutex_unlock(&dev->struct_mutex); 2311c248b7dSInki Dae return ret; 2321c248b7dSInki Dae } 2331c248b7dSInki Dae 2341c248b7dSInki Dae static void exynos_drm_crtc_destroy(struct drm_crtc *crtc) 2351c248b7dSInki Dae { 2361c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 2371c248b7dSInki Dae struct exynos_drm_private *private = crtc->dev->dev_private; 2381c248b7dSInki Dae 2391c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2401c248b7dSInki Dae 2411c248b7dSInki Dae private->crtc[exynos_crtc->pipe] = NULL; 2421c248b7dSInki Dae 2431c248b7dSInki Dae drm_crtc_cleanup(crtc); 2441c248b7dSInki Dae kfree(exynos_crtc); 2451c248b7dSInki Dae } 2461c248b7dSInki Dae 2471c248b7dSInki Dae static struct drm_crtc_funcs exynos_crtc_funcs = { 2481c248b7dSInki Dae .set_config = drm_crtc_helper_set_config, 2491c248b7dSInki Dae .page_flip = exynos_drm_crtc_page_flip, 2501c248b7dSInki Dae .destroy = exynos_drm_crtc_destroy, 2511c248b7dSInki Dae }; 2521c248b7dSInki Dae 2531c248b7dSInki Dae int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr) 2541c248b7dSInki Dae { 2551c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc; 2561c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 2571c248b7dSInki Dae struct drm_crtc *crtc; 2581c248b7dSInki Dae 2591c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2601c248b7dSInki Dae 2611c248b7dSInki Dae exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL); 2621c248b7dSInki Dae if (!exynos_crtc) { 2631c248b7dSInki Dae DRM_ERROR("failed to allocate exynos crtc\n"); 2641c248b7dSInki Dae return -ENOMEM; 2651c248b7dSInki Dae } 2661c248b7dSInki Dae 2671c248b7dSInki Dae exynos_crtc->pipe = nr; 268ec05da95SInki Dae exynos_crtc->dpms = DRM_MODE_DPMS_OFF; 269b5d2eb3bSJoonyoung Shim exynos_crtc->plane = exynos_plane_init(dev, 1 << nr, true); 270b5d2eb3bSJoonyoung Shim if (!exynos_crtc->plane) { 271b5d2eb3bSJoonyoung Shim kfree(exynos_crtc); 272b5d2eb3bSJoonyoung Shim return -ENOMEM; 273b5d2eb3bSJoonyoung Shim } 274b5d2eb3bSJoonyoung Shim 2751c248b7dSInki Dae crtc = &exynos_crtc->drm_crtc; 2761c248b7dSInki Dae 2771c248b7dSInki Dae private->crtc[nr] = crtc; 2781c248b7dSInki Dae 2791c248b7dSInki Dae drm_crtc_init(dev, crtc, &exynos_crtc_funcs); 2801c248b7dSInki Dae drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs); 2811c248b7dSInki Dae 2821c248b7dSInki Dae return 0; 2831c248b7dSInki Dae } 2841c248b7dSInki Dae 2851c248b7dSInki Dae int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc) 2861c248b7dSInki Dae { 2871c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 288ec05da95SInki Dae struct exynos_drm_crtc *exynos_crtc = 289ec05da95SInki Dae to_exynos_crtc(private->crtc[crtc]); 2901c248b7dSInki Dae 2911c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2921c248b7dSInki Dae 293ec05da95SInki Dae if (exynos_crtc->dpms != DRM_MODE_DPMS_ON) 294ec05da95SInki Dae return -EPERM; 295ec05da95SInki Dae 2961c248b7dSInki Dae exynos_drm_fn_encoder(private->crtc[crtc], &crtc, 2971c248b7dSInki Dae exynos_drm_enable_vblank); 2981c248b7dSInki Dae 2991c248b7dSInki Dae return 0; 3001c248b7dSInki Dae } 3011c248b7dSInki Dae 3021c248b7dSInki Dae void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc) 3031c248b7dSInki Dae { 3041c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 305ec05da95SInki Dae struct exynos_drm_crtc *exynos_crtc = 306ec05da95SInki Dae to_exynos_crtc(private->crtc[crtc]); 3071c248b7dSInki Dae 3081c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 3091c248b7dSInki Dae 310ec05da95SInki Dae if (exynos_crtc->dpms != DRM_MODE_DPMS_ON) 311ec05da95SInki Dae return; 312ec05da95SInki Dae 3131c248b7dSInki Dae exynos_drm_fn_encoder(private->crtc[crtc], &crtc, 3141c248b7dSInki Dae exynos_drm_disable_vblank); 3151c248b7dSInki Dae } 316