/* * Copyright (C) 2011 Samsung Electronics Co.Ltd * Authors: Joonyoung Shim * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include #include #include #include #include "exynos_drm_drv.h" #include "exynos_drm_crtc.h" #include "exynos_drm_fb.h" #include "exynos_drm_gem.h" #include "exynos_drm_plane.h" static const uint32_t formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_NV12, }; /* * This function is to get X or Y size shown via screen. This needs length and * start position of CRTC. * * <--- length ---> * CRTC ---------------- * ^ start ^ end * * There are six cases from a to f. * * <----- SCREEN -----> * 0 last * ----------|------------------|---------- * CRTCs * a ------- * b ------- * c -------------------------- * d -------- * e ------- * f ------- */ static int exynos_plane_get_size(int start, unsigned length, unsigned last) { int end = start + length; int size = 0; if (start <= 0) { if (end > 0) size = min_t(unsigned, end, last); } else if (start <= last) { size = min_t(unsigned, last - start, length); } return size; } static void exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc, struct drm_framebuffer *fb, int crtc_x, int crtc_y, unsigned int crtc_w, unsigned int crtc_h, uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h) { struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); struct drm_display_mode *mode = &crtc->state->adjusted_mode; unsigned int actual_w; unsigned int actual_h; actual_w = exynos_plane_get_size(crtc_x, crtc_w, mode->hdisplay); actual_h = exynos_plane_get_size(crtc_y, crtc_h, mode->vdisplay); if (crtc_x < 0) { if (actual_w) src_x -= crtc_x; crtc_x = 0; } if (crtc_y < 0) { if (actual_h) src_y -= crtc_y; crtc_y = 0; } /* set ratio */ exynos_plane->h_ratio = (src_w << 16) / crtc_w; exynos_plane->v_ratio = (src_h << 16) / crtc_h; /* set drm framebuffer data. */ exynos_plane->src_x = src_x; exynos_plane->src_y = src_y; exynos_plane->src_w = (actual_w * exynos_plane->h_ratio) >> 16; exynos_plane->src_h = (actual_h * exynos_plane->v_ratio) >> 16; /* set plane range to be displayed. */ exynos_plane->crtc_x = crtc_x; exynos_plane->crtc_y = crtc_y; exynos_plane->crtc_w = actual_w; exynos_plane->crtc_h = actual_h; DRM_DEBUG_KMS("plane : offset_x/y(%d,%d), width/height(%d,%d)", exynos_plane->crtc_x, exynos_plane->crtc_y, exynos_plane->crtc_w, exynos_plane->crtc_h); plane->crtc = crtc; } static struct drm_plane_funcs exynos_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = drm_plane_cleanup, .reset = drm_atomic_helper_plane_reset, .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, }; static int exynos_plane_atomic_check(struct drm_plane *plane, struct drm_plane_state *state) { struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); int nr; int i; if (!state->fb) return 0; nr = exynos_drm_fb_get_buf_cnt(state->fb); for (i = 0; i < nr; i++) { struct exynos_drm_gem_obj *obj = exynos_drm_fb_gem_obj(state->fb, i); if (!obj) { DRM_DEBUG_KMS("gem object is null\n"); return -EFAULT; } exynos_plane->dma_addr[i] = obj->dma_addr + state->fb->offsets[i]; DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n", i, (unsigned long)exynos_plane->dma_addr[i]); } return 0; } static void exynos_plane_atomic_update(struct drm_plane *plane, struct drm_plane_state *old_state) { struct drm_plane_state *state = plane->state; struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(state->crtc); struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); if (!state->crtc) return; exynos_plane_mode_set(plane, state->crtc, state->fb, state->crtc_x, state->crtc_y, state->crtc_w, state->crtc_h, state->src_x >> 16, state->src_y >> 16, state->src_w >> 16, state->src_h >> 16); exynos_plane->pending_fb = state->fb; if (exynos_crtc->ops->update_plane) exynos_crtc->ops->update_plane(exynos_crtc, exynos_plane); } static void exynos_plane_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane); struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(old_state->crtc); if (!old_state->crtc) return; if (exynos_crtc->ops->disable_plane) exynos_crtc->ops->disable_plane(exynos_crtc, exynos_plane); } static const struct drm_plane_helper_funcs plane_helper_funcs = { .atomic_check = exynos_plane_atomic_check, .atomic_update = exynos_plane_atomic_update, .atomic_disable = exynos_plane_atomic_disable, }; static void exynos_plane_attach_zpos_property(struct drm_plane *plane, unsigned int zpos) { struct drm_device *dev = plane->dev; struct exynos_drm_private *dev_priv = dev->dev_private; struct drm_property *prop; prop = dev_priv->plane_zpos_property; if (!prop) { prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "zpos", 0, MAX_PLANE - 1); if (!prop) return; dev_priv->plane_zpos_property = prop; } drm_object_attach_property(&plane->base, prop, zpos); } int exynos_plane_init(struct drm_device *dev, struct exynos_drm_plane *exynos_plane, unsigned long possible_crtcs, enum drm_plane_type type, unsigned int zpos) { int err; err = drm_universal_plane_init(dev, &exynos_plane->base, possible_crtcs, &exynos_plane_funcs, formats, ARRAY_SIZE(formats), type); if (err) { DRM_ERROR("failed to initialize plane\n"); return err; } drm_plane_helper_add(&exynos_plane->base, &plane_helper_funcs); exynos_plane->zpos = zpos; if (type == DRM_PLANE_TYPE_OVERLAY) exynos_plane_attach_zpos_property(&exynos_plane->base, zpos); return 0; }