/* * 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 "exynos_drm_drv.h" #include "exynos_drm_crtc.h" #include "exynos_drm_fb.h" #include "exynos_drm_gem.h" #include "exynos_drm_plane.h" #define to_exynos_plane(x) container_of(x, struct exynos_plane, base) struct exynos_plane { struct drm_plane base; struct exynos_drm_overlay overlay; bool enabled; }; static const uint32_t formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_NV12, DRM_FORMAT_NV12MT, }; /* * 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; } int 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_plane *exynos_plane = to_exynos_plane(plane); struct exynos_drm_overlay *overlay = &exynos_plane->overlay; unsigned int actual_w; unsigned int actual_h; int nr; int i; nr = exynos_drm_fb_get_buf_cnt(fb); for (i = 0; i < nr; i++) { struct exynos_drm_gem_buf *buffer = exynos_drm_fb_buffer(fb, i); if (!buffer) { DRM_DEBUG_KMS("buffer is null\n"); return -EFAULT; } overlay->dma_addr[i] = buffer->dma_addr; DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n", i, (unsigned long)overlay->dma_addr[i]); } actual_w = exynos_plane_get_size(crtc_x, crtc_w, crtc->mode.hdisplay); actual_h = exynos_plane_get_size(crtc_y, crtc_h, crtc->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 drm framebuffer data. */ overlay->fb_x = src_x; overlay->fb_y = src_y; overlay->fb_width = fb->width; overlay->fb_height = fb->height; overlay->src_width = src_w; overlay->src_height = src_h; overlay->bpp = fb->bits_per_pixel; overlay->pitch = fb->pitches[0]; overlay->pixel_format = fb->pixel_format; /* set overlay range to be displayed. */ overlay->crtc_x = crtc_x; overlay->crtc_y = crtc_y; overlay->crtc_width = actual_w; overlay->crtc_height = actual_h; /* set drm mode data. */ overlay->mode_width = crtc->mode.hdisplay; overlay->mode_height = crtc->mode.vdisplay; overlay->refresh = crtc->mode.vrefresh; overlay->scan_flag = crtc->mode.flags; DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)", overlay->crtc_x, overlay->crtc_y, overlay->crtc_width, overlay->crtc_height); exynos_drm_crtc_plane_mode_set(crtc, overlay); return 0; } void exynos_plane_commit(struct drm_plane *plane) { struct exynos_plane *exynos_plane = to_exynos_plane(plane); struct exynos_drm_overlay *overlay = &exynos_plane->overlay; exynos_drm_crtc_plane_commit(plane->crtc, overlay->zpos); } void exynos_plane_dpms(struct drm_plane *plane, int mode) { struct exynos_plane *exynos_plane = to_exynos_plane(plane); struct exynos_drm_overlay *overlay = &exynos_plane->overlay; if (mode == DRM_MODE_DPMS_ON) { if (exynos_plane->enabled) return; exynos_drm_crtc_plane_enable(plane->crtc, overlay->zpos); exynos_plane->enabled = true; } else { if (!exynos_plane->enabled) return; exynos_drm_crtc_plane_disable(plane->crtc, overlay->zpos); exynos_plane->enabled = false; } } static int exynos_update_plane(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) { int ret; ret = exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y, crtc_w, crtc_h, src_x >> 16, src_y >> 16, src_w >> 16, src_h >> 16); if (ret < 0) return ret; plane->crtc = crtc; exynos_plane_commit(plane); exynos_plane_dpms(plane, DRM_MODE_DPMS_ON); return 0; } static int exynos_disable_plane(struct drm_plane *plane) { exynos_plane_dpms(plane, DRM_MODE_DPMS_OFF); return 0; } static void exynos_plane_destroy(struct drm_plane *plane) { struct exynos_plane *exynos_plane = to_exynos_plane(plane); exynos_disable_plane(plane); drm_plane_cleanup(plane); kfree(exynos_plane); } static int exynos_plane_set_property(struct drm_plane *plane, struct drm_property *property, uint64_t val) { struct drm_device *dev = plane->dev; struct exynos_plane *exynos_plane = to_exynos_plane(plane); struct exynos_drm_private *dev_priv = dev->dev_private; if (property == dev_priv->plane_zpos_property) { exynos_plane->overlay.zpos = val; return 0; } return -EINVAL; } static struct drm_plane_funcs exynos_plane_funcs = { .update_plane = exynos_update_plane, .disable_plane = exynos_disable_plane, .destroy = exynos_plane_destroy, .set_property = exynos_plane_set_property, }; static void exynos_plane_attach_zpos_property(struct drm_plane *plane) { 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, 0, "zpos", 0, MAX_PLANE - 1); if (!prop) return; dev_priv->plane_zpos_property = prop; } drm_object_attach_property(&plane->base, prop, 0); } struct drm_plane *exynos_plane_init(struct drm_device *dev, unsigned long possible_crtcs, bool priv) { struct exynos_plane *exynos_plane; int err; exynos_plane = kzalloc(sizeof(struct exynos_plane), GFP_KERNEL); if (!exynos_plane) return NULL; err = drm_plane_init(dev, &exynos_plane->base, possible_crtcs, &exynos_plane_funcs, formats, ARRAY_SIZE(formats), priv); if (err) { DRM_ERROR("failed to initialize plane\n"); kfree(exynos_plane); return NULL; } if (priv) exynos_plane->overlay.zpos = DEFAULT_ZPOS; else exynos_plane_attach_zpos_property(&exynos_plane->base); return &exynos_plane->base; }