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_fb.h" 341c248b7dSInki Dae #include "exynos_drm_encoder.h" 3519c8b834SInki Dae #include "exynos_drm_buf.h" 361c248b7dSInki Dae 371c248b7dSInki Dae #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\ 381c248b7dSInki Dae drm_crtc) 391c248b7dSInki Dae 401c248b7dSInki Dae /* 4119c8b834SInki Dae * Exynos specific crtc postion structure. 4219c8b834SInki Dae * 4319c8b834SInki Dae * @fb_x: offset x on a framebuffer to be displyed 4419c8b834SInki Dae * - the unit is screen coordinates. 4519c8b834SInki Dae * @fb_y: offset y on a framebuffer to be displayed 4619c8b834SInki Dae * - the unit is screen coordinates. 4719c8b834SInki Dae * @crtc_x: offset x on hardware screen. 4819c8b834SInki Dae * @crtc_y: offset y on hardware screen. 4919c8b834SInki Dae * @crtc_w: width of hardware screen. 5019c8b834SInki Dae * @crtc_h: height of hardware screen. 511c248b7dSInki Dae */ 521c248b7dSInki Dae struct exynos_drm_crtc_pos { 531c248b7dSInki Dae unsigned int fb_x; 541c248b7dSInki Dae unsigned int fb_y; 5519c8b834SInki Dae unsigned int crtc_x; 5619c8b834SInki Dae unsigned int crtc_y; 571c248b7dSInki Dae unsigned int crtc_w; 581c248b7dSInki Dae unsigned int crtc_h; 591c248b7dSInki Dae }; 601c248b7dSInki Dae 611c248b7dSInki Dae /* 621c248b7dSInki Dae * Exynos specific crtc structure. 631c248b7dSInki Dae * 641c248b7dSInki Dae * @drm_crtc: crtc object. 651c248b7dSInki Dae * @overlay: contain information common to display controller and hdmi and 661c248b7dSInki Dae * contents of this overlay object would be copied to sub driver size. 671c248b7dSInki Dae * @pipe: a crtc index created at load() with a new crtc object creation 681c248b7dSInki Dae * and the crtc object would be set to private->crtc array 691c248b7dSInki Dae * to get a crtc object corresponding to this pipe from private->crtc 701c248b7dSInki Dae * array when irq interrupt occured. the reason of using this pipe is that 711c248b7dSInki Dae * drm framework doesn't support multiple irq yet. 721c248b7dSInki Dae * we can refer to the crtc to current hardware interrupt occured through 731c248b7dSInki Dae * this pipe value. 741c248b7dSInki Dae */ 751c248b7dSInki Dae struct exynos_drm_crtc { 761c248b7dSInki Dae struct drm_crtc drm_crtc; 771c248b7dSInki Dae struct exynos_drm_overlay overlay; 781c248b7dSInki Dae unsigned int pipe; 791c248b7dSInki Dae }; 801c248b7dSInki Dae 818e9cc6a1SInki Dae static void exynos_drm_crtc_apply(struct drm_crtc *crtc) 821c248b7dSInki Dae { 831c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 841c248b7dSInki Dae struct exynos_drm_overlay *overlay = &exynos_crtc->overlay; 851c248b7dSInki Dae 861c248b7dSInki Dae exynos_drm_fn_encoder(crtc, overlay, 871c248b7dSInki Dae exynos_drm_encoder_crtc_mode_set); 881c248b7dSInki Dae exynos_drm_fn_encoder(crtc, NULL, exynos_drm_encoder_crtc_commit); 891c248b7dSInki Dae } 901c248b7dSInki Dae 9119c8b834SInki Dae static int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay, 921c248b7dSInki Dae struct drm_framebuffer *fb, 931c248b7dSInki Dae struct drm_display_mode *mode, 941c248b7dSInki Dae struct exynos_drm_crtc_pos *pos) 951c248b7dSInki Dae { 9619c8b834SInki Dae struct exynos_drm_buf_entry *entry; 9719c8b834SInki Dae unsigned int actual_w; 9819c8b834SInki Dae unsigned int actual_h; 991c248b7dSInki Dae 10019c8b834SInki Dae entry = exynos_drm_fb_get_buf(fb); 10119c8b834SInki Dae if (!entry) { 10219c8b834SInki Dae DRM_LOG_KMS("entry is null.\n"); 10319c8b834SInki Dae return -EFAULT; 10419c8b834SInki Dae } 1051c248b7dSInki Dae 10619c8b834SInki Dae overlay->paddr = entry->paddr; 10719c8b834SInki Dae overlay->vaddr = entry->vaddr; 1081c248b7dSInki Dae 10919c8b834SInki Dae DRM_DEBUG_KMS("vaddr = 0x%lx, paddr = 0x%lx\n", 11019c8b834SInki Dae (unsigned long)overlay->vaddr, 11119c8b834SInki Dae (unsigned long)overlay->paddr); 1121c248b7dSInki Dae 11319c8b834SInki Dae actual_w = min((mode->hdisplay - pos->crtc_x), pos->crtc_w); 11419c8b834SInki Dae actual_h = min((mode->vdisplay - pos->crtc_y), pos->crtc_h); 11519c8b834SInki Dae 11619c8b834SInki Dae /* set drm framebuffer data. */ 11719c8b834SInki Dae overlay->fb_x = pos->fb_x; 11819c8b834SInki Dae overlay->fb_y = pos->fb_y; 11919c8b834SInki Dae overlay->fb_width = fb->width; 12019c8b834SInki Dae overlay->fb_height = fb->height; 1211c248b7dSInki Dae overlay->bpp = fb->bits_per_pixel; 12219c8b834SInki Dae overlay->pitch = fb->pitch; 12319c8b834SInki Dae 12419c8b834SInki Dae /* set overlay range to be displayed. */ 12519c8b834SInki Dae overlay->crtc_x = pos->crtc_x; 12619c8b834SInki Dae overlay->crtc_y = pos->crtc_y; 12719c8b834SInki Dae overlay->crtc_width = actual_w; 12819c8b834SInki Dae overlay->crtc_height = actual_h; 12919c8b834SInki Dae 13019c8b834SInki Dae /* set drm mode data. */ 13119c8b834SInki Dae overlay->mode_width = mode->hdisplay; 13219c8b834SInki Dae overlay->mode_height = mode->vdisplay; 13319c8b834SInki Dae overlay->refresh = mode->vrefresh; 13419c8b834SInki Dae overlay->scan_flag = mode->flags; 1351c248b7dSInki Dae 1361c248b7dSInki Dae DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)", 13719c8b834SInki Dae overlay->crtc_x, overlay->crtc_y, 13819c8b834SInki Dae overlay->crtc_width, overlay->crtc_height); 1391c248b7dSInki Dae 14019c8b834SInki Dae return 0; 1411c248b7dSInki Dae } 1421c248b7dSInki Dae 1431c248b7dSInki Dae static int exynos_drm_crtc_update(struct drm_crtc *crtc) 1441c248b7dSInki Dae { 1451c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc; 1461c248b7dSInki Dae struct exynos_drm_overlay *overlay; 1471c248b7dSInki Dae struct exynos_drm_crtc_pos pos; 1481c248b7dSInki Dae struct drm_display_mode *mode = &crtc->mode; 1491c248b7dSInki Dae struct drm_framebuffer *fb = crtc->fb; 1501c248b7dSInki Dae 1511c248b7dSInki Dae if (!mode || !fb) 1521c248b7dSInki Dae return -EINVAL; 1531c248b7dSInki Dae 1541c248b7dSInki Dae exynos_crtc = to_exynos_crtc(crtc); 1551c248b7dSInki Dae overlay = &exynos_crtc->overlay; 1561c248b7dSInki Dae 1571c248b7dSInki Dae memset(&pos, 0, sizeof(struct exynos_drm_crtc_pos)); 15819c8b834SInki Dae 15919c8b834SInki Dae /* it means the offset of framebuffer to be displayed. */ 1601c248b7dSInki Dae pos.fb_x = crtc->x; 1611c248b7dSInki Dae pos.fb_y = crtc->y; 16219c8b834SInki Dae 16319c8b834SInki Dae /* OSD position to be displayed. */ 16419c8b834SInki Dae pos.crtc_x = 0; 16519c8b834SInki Dae pos.crtc_y = 0; 1661c248b7dSInki Dae pos.crtc_w = fb->width - crtc->x; 1671c248b7dSInki Dae pos.crtc_h = fb->height - crtc->y; 1681c248b7dSInki Dae 16919c8b834SInki Dae return exynos_drm_overlay_update(overlay, crtc->fb, mode, &pos); 1701c248b7dSInki Dae } 1711c248b7dSInki Dae 1721c248b7dSInki Dae static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode) 1731c248b7dSInki Dae { 1741c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1751c248b7dSInki Dae 1761c248b7dSInki Dae /* TODO */ 1771c248b7dSInki Dae } 1781c248b7dSInki Dae 1791c248b7dSInki Dae static void exynos_drm_crtc_prepare(struct drm_crtc *crtc) 1801c248b7dSInki Dae { 1811c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1821c248b7dSInki Dae 1831c248b7dSInki Dae /* drm framework doesn't check NULL. */ 1841c248b7dSInki Dae } 1851c248b7dSInki Dae 1861c248b7dSInki Dae static void exynos_drm_crtc_commit(struct drm_crtc *crtc) 1871c248b7dSInki Dae { 1881c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1891c248b7dSInki Dae 1901c248b7dSInki Dae /* drm framework doesn't check NULL. */ 1911c248b7dSInki Dae } 1921c248b7dSInki Dae 1931c248b7dSInki Dae static bool 1941c248b7dSInki Dae exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc, 1951c248b7dSInki Dae struct drm_display_mode *mode, 1961c248b7dSInki Dae struct drm_display_mode *adjusted_mode) 1971c248b7dSInki Dae { 1981c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 1991c248b7dSInki Dae 2001c248b7dSInki Dae /* drm framework doesn't check NULL */ 2011c248b7dSInki Dae return true; 2021c248b7dSInki Dae } 2031c248b7dSInki Dae 2041c248b7dSInki Dae static int 2051c248b7dSInki Dae exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, 2061c248b7dSInki Dae struct drm_display_mode *adjusted_mode, int x, int y, 2071c248b7dSInki Dae struct drm_framebuffer *old_fb) 2081c248b7dSInki Dae { 2091c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2101c248b7dSInki Dae 2111c248b7dSInki Dae mode = adjusted_mode; 2121c248b7dSInki Dae 2131c248b7dSInki Dae return exynos_drm_crtc_update(crtc); 2141c248b7dSInki Dae } 2151c248b7dSInki Dae 2161c248b7dSInki Dae static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, 2171c248b7dSInki Dae struct drm_framebuffer *old_fb) 2181c248b7dSInki Dae { 2191c248b7dSInki Dae int ret; 2201c248b7dSInki Dae 2211c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2221c248b7dSInki Dae 2231c248b7dSInki Dae ret = exynos_drm_crtc_update(crtc); 2241c248b7dSInki Dae if (ret) 2251c248b7dSInki Dae return ret; 2261c248b7dSInki Dae 2271c248b7dSInki Dae exynos_drm_crtc_apply(crtc); 2281c248b7dSInki Dae 2291c248b7dSInki Dae return ret; 2301c248b7dSInki Dae } 2311c248b7dSInki Dae 2321c248b7dSInki Dae static void exynos_drm_crtc_load_lut(struct drm_crtc *crtc) 2331c248b7dSInki Dae { 2341c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2351c248b7dSInki Dae /* drm framework doesn't check NULL */ 2361c248b7dSInki Dae } 2371c248b7dSInki Dae 2381c248b7dSInki Dae static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = { 2391c248b7dSInki Dae .dpms = exynos_drm_crtc_dpms, 2401c248b7dSInki Dae .prepare = exynos_drm_crtc_prepare, 2411c248b7dSInki Dae .commit = exynos_drm_crtc_commit, 2421c248b7dSInki Dae .mode_fixup = exynos_drm_crtc_mode_fixup, 2431c248b7dSInki Dae .mode_set = exynos_drm_crtc_mode_set, 2441c248b7dSInki Dae .mode_set_base = exynos_drm_crtc_mode_set_base, 2451c248b7dSInki Dae .load_lut = exynos_drm_crtc_load_lut, 2461c248b7dSInki Dae }; 2471c248b7dSInki Dae 2481c248b7dSInki Dae static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc, 2491c248b7dSInki Dae struct drm_framebuffer *fb, 2501c248b7dSInki Dae struct drm_pending_vblank_event *event) 2511c248b7dSInki Dae { 2521c248b7dSInki Dae struct drm_device *dev = crtc->dev; 2531c248b7dSInki Dae struct exynos_drm_private *dev_priv = dev->dev_private; 2541c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 2551c248b7dSInki Dae struct drm_framebuffer *old_fb = crtc->fb; 2561c248b7dSInki Dae int ret = -EINVAL; 2571c248b7dSInki Dae 2581c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2591c248b7dSInki Dae 2601c248b7dSInki Dae mutex_lock(&dev->struct_mutex); 2611c248b7dSInki Dae 2621c248b7dSInki Dae if (event && !dev_priv->pageflip_event) { 2631c248b7dSInki Dae list_add_tail(&event->base.link, 2641c248b7dSInki Dae &dev_priv->pageflip_event_list); 2651c248b7dSInki Dae 2661c248b7dSInki Dae ret = drm_vblank_get(dev, exynos_crtc->pipe); 2671c248b7dSInki Dae if (ret) { 2681c248b7dSInki Dae DRM_DEBUG("failed to acquire vblank counter\n"); 2691c248b7dSInki Dae goto out; 2701c248b7dSInki Dae } 2711c248b7dSInki Dae 2721c248b7dSInki Dae crtc->fb = fb; 2731c248b7dSInki Dae ret = exynos_drm_crtc_update(crtc); 2741c248b7dSInki Dae if (ret) { 2751c248b7dSInki Dae crtc->fb = old_fb; 2761c248b7dSInki Dae drm_vblank_put(dev, exynos_crtc->pipe); 2771c248b7dSInki Dae dev_priv->pageflip_event = false; 2781c248b7dSInki Dae 2791c248b7dSInki Dae goto out; 2801c248b7dSInki Dae } 2811c248b7dSInki Dae 2828e9cc6a1SInki Dae exynos_drm_crtc_apply(crtc); 2838e9cc6a1SInki Dae 2841c248b7dSInki Dae dev_priv->pageflip_event = true; 2851c248b7dSInki Dae } 2861c248b7dSInki Dae out: 2871c248b7dSInki Dae mutex_unlock(&dev->struct_mutex); 2881c248b7dSInki Dae return ret; 2891c248b7dSInki Dae } 2901c248b7dSInki Dae 2911c248b7dSInki Dae static void exynos_drm_crtc_destroy(struct drm_crtc *crtc) 2921c248b7dSInki Dae { 2931c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 2941c248b7dSInki Dae struct exynos_drm_private *private = crtc->dev->dev_private; 2951c248b7dSInki Dae 2961c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 2971c248b7dSInki Dae 2981c248b7dSInki Dae private->crtc[exynos_crtc->pipe] = NULL; 2991c248b7dSInki Dae 3001c248b7dSInki Dae drm_crtc_cleanup(crtc); 3011c248b7dSInki Dae kfree(exynos_crtc); 3021c248b7dSInki Dae } 3031c248b7dSInki Dae 3041c248b7dSInki Dae static struct drm_crtc_funcs exynos_crtc_funcs = { 3051c248b7dSInki Dae .set_config = drm_crtc_helper_set_config, 3061c248b7dSInki Dae .page_flip = exynos_drm_crtc_page_flip, 3071c248b7dSInki Dae .destroy = exynos_drm_crtc_destroy, 3081c248b7dSInki Dae }; 3091c248b7dSInki Dae 3101c248b7dSInki Dae struct exynos_drm_overlay *get_exynos_drm_overlay(struct drm_device *dev, 3111c248b7dSInki Dae struct drm_crtc *crtc) 3121c248b7dSInki Dae { 3131c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); 3141c248b7dSInki Dae 3151c248b7dSInki Dae return &exynos_crtc->overlay; 3161c248b7dSInki Dae } 3171c248b7dSInki Dae 3181c248b7dSInki Dae int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr) 3191c248b7dSInki Dae { 3201c248b7dSInki Dae struct exynos_drm_crtc *exynos_crtc; 3211c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 3221c248b7dSInki Dae struct drm_crtc *crtc; 3231c248b7dSInki Dae 3241c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 3251c248b7dSInki Dae 3261c248b7dSInki Dae exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL); 3271c248b7dSInki Dae if (!exynos_crtc) { 3281c248b7dSInki Dae DRM_ERROR("failed to allocate exynos crtc\n"); 3291c248b7dSInki Dae return -ENOMEM; 3301c248b7dSInki Dae } 3311c248b7dSInki Dae 3321c248b7dSInki Dae exynos_crtc->pipe = nr; 3331c248b7dSInki Dae crtc = &exynos_crtc->drm_crtc; 3341c248b7dSInki Dae 3351c248b7dSInki Dae private->crtc[nr] = crtc; 3361c248b7dSInki Dae 3371c248b7dSInki Dae drm_crtc_init(dev, crtc, &exynos_crtc_funcs); 3381c248b7dSInki Dae drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs); 3391c248b7dSInki Dae 3401c248b7dSInki Dae return 0; 3411c248b7dSInki Dae } 3421c248b7dSInki Dae 3431c248b7dSInki Dae int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int crtc) 3441c248b7dSInki Dae { 3451c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 3461c248b7dSInki Dae 3471c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 3481c248b7dSInki Dae 3491c248b7dSInki Dae exynos_drm_fn_encoder(private->crtc[crtc], &crtc, 3501c248b7dSInki Dae exynos_drm_enable_vblank); 3511c248b7dSInki Dae 3521c248b7dSInki Dae return 0; 3531c248b7dSInki Dae } 3541c248b7dSInki Dae 3551c248b7dSInki Dae void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int crtc) 3561c248b7dSInki Dae { 3571c248b7dSInki Dae struct exynos_drm_private *private = dev->dev_private; 3581c248b7dSInki Dae 3591c248b7dSInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 3601c248b7dSInki Dae 3611c248b7dSInki Dae exynos_drm_fn_encoder(private->crtc[crtc], &crtc, 3621c248b7dSInki Dae exynos_drm_disable_vblank); 3631c248b7dSInki Dae } 3641c248b7dSInki Dae 3651c248b7dSInki Dae MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 3661c248b7dSInki Dae MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 3671c248b7dSInki Dae MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 3681c248b7dSInki Dae MODULE_DESCRIPTION("Samsung SoC DRM CRTC Driver"); 3691c248b7dSInki Dae MODULE_LICENSE("GPL"); 370