2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
3 * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
14 #include <drm/exynos_drm.h>
15 #include <drm/drm_plane_helper.h>
16 #include "exynos_drm_drv.h"
17 #include "exynos_drm_crtc.h"
18 #include "exynos_drm_fb.h"
19 #include "exynos_drm_gem.h"
20 #include "exynos_drm_plane.h"
22 static const uint32_t formats[] = {
29 * This function is to get X or Y size shown via screen. This needs length and
30 * start position of CRTC.
33 * CRTC ----------------
36 * There are six cases from a to f.
38 * <----- SCREEN ----->
40 * ----------|------------------|----------
44 * c --------------------------
49 static int exynos_plane_get_size(int start, unsigned length, unsigned last)
51 int end = start + length;
56 size = min_t(unsigned, end, last);
57 } else if (start <= last) {
58 size = min_t(unsigned, last - start, length);
64 int exynos_check_plane(struct drm_plane *plane, struct drm_framebuffer *fb)
66 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
70 nr = exynos_drm_fb_get_buf_cnt(fb);
71 for (i = 0; i < nr; i++) {
72 struct exynos_drm_gem_buf *buffer = exynos_drm_fb_buffer(fb, i);
75 DRM_DEBUG_KMS("buffer is null\n");
79 exynos_plane->dma_addr[i] = buffer->dma_addr;
81 DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n",
82 i, (unsigned long)exynos_plane->dma_addr[i]);
88 void exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
89 struct drm_framebuffer *fb, int crtc_x, int crtc_y,
90 unsigned int crtc_w, unsigned int crtc_h,
91 uint32_t src_x, uint32_t src_y,
92 uint32_t src_w, uint32_t src_h)
94 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
95 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
96 unsigned int actual_w;
97 unsigned int actual_h;
99 actual_w = exynos_plane_get_size(crtc_x, crtc_w, crtc->mode.hdisplay);
100 actual_h = exynos_plane_get_size(crtc_y, crtc_h, crtc->mode.vdisplay);
114 /* set drm framebuffer data. */
115 exynos_plane->fb_x = src_x;
116 exynos_plane->fb_y = src_y;
117 exynos_plane->fb_width = fb->width;
118 exynos_plane->fb_height = fb->height;
119 exynos_plane->src_width = src_w;
120 exynos_plane->src_height = src_h;
121 exynos_plane->bpp = fb->bits_per_pixel;
122 exynos_plane->pitch = fb->pitches[0];
123 exynos_plane->pixel_format = fb->pixel_format;
125 /* set plane range to be displayed. */
126 exynos_plane->crtc_x = crtc_x;
127 exynos_plane->crtc_y = crtc_y;
128 exynos_plane->crtc_width = actual_w;
129 exynos_plane->crtc_height = actual_h;
131 /* set drm mode data. */
132 exynos_plane->mode_width = crtc->mode.hdisplay;
133 exynos_plane->mode_height = crtc->mode.vdisplay;
134 exynos_plane->refresh = crtc->mode.vrefresh;
135 exynos_plane->scan_flag = crtc->mode.flags;
137 DRM_DEBUG_KMS("plane : offset_x/y(%d,%d), width/height(%d,%d)",
138 exynos_plane->crtc_x, exynos_plane->crtc_y,
139 exynos_plane->crtc_width, exynos_plane->crtc_height);
143 if (exynos_crtc->ops->win_mode_set)
144 exynos_crtc->ops->win_mode_set(exynos_crtc, exynos_plane);
148 exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
149 struct drm_framebuffer *fb, int crtc_x, int crtc_y,
150 unsigned int crtc_w, unsigned int crtc_h,
151 uint32_t src_x, uint32_t src_y,
152 uint32_t src_w, uint32_t src_h)
155 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
156 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
159 ret = exynos_check_plane(plane, fb);
163 exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y,
164 crtc_w, crtc_h, src_x >> 16, src_y >> 16,
165 src_w >> 16, src_h >> 16);
167 if (exynos_crtc->ops->win_commit)
168 exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
173 static int exynos_disable_plane(struct drm_plane *plane)
175 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
176 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(plane->crtc);
178 if (exynos_crtc->ops->win_disable)
179 exynos_crtc->ops->win_disable(exynos_crtc,
185 static void exynos_plane_destroy(struct drm_plane *plane)
187 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
189 exynos_disable_plane(plane);
190 drm_plane_cleanup(plane);
194 static int exynos_plane_set_property(struct drm_plane *plane,
195 struct drm_property *property,
198 struct drm_device *dev = plane->dev;
199 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
200 struct exynos_drm_private *dev_priv = dev->dev_private;
202 if (property == dev_priv->plane_zpos_property) {
203 exynos_plane->zpos = val;
210 static struct drm_plane_funcs exynos_plane_funcs = {
211 .update_plane = exynos_update_plane,
212 .disable_plane = exynos_disable_plane,
213 .destroy = exynos_plane_destroy,
214 .set_property = exynos_plane_set_property,
217 static void exynos_plane_attach_zpos_property(struct drm_plane *plane)
219 struct drm_device *dev = plane->dev;
220 struct exynos_drm_private *dev_priv = dev->dev_private;
221 struct drm_property *prop;
223 prop = dev_priv->plane_zpos_property;
225 prop = drm_property_create_range(dev, 0, "zpos", 0,
230 dev_priv->plane_zpos_property = prop;
233 drm_object_attach_property(&plane->base, prop, 0);
236 struct drm_plane *exynos_plane_init(struct drm_device *dev,
237 unsigned long possible_crtcs,
238 enum drm_plane_type type)
240 struct exynos_drm_plane *exynos_plane;
243 exynos_plane = kzalloc(sizeof(struct exynos_drm_plane), GFP_KERNEL);
245 return ERR_PTR(-ENOMEM);
247 err = drm_universal_plane_init(dev, &exynos_plane->base, possible_crtcs,
248 &exynos_plane_funcs, formats,
249 ARRAY_SIZE(formats), type);
251 DRM_ERROR("failed to initialize plane\n");
256 if (type == DRM_PLANE_TYPE_PRIMARY)
257 exynos_plane->zpos = DEFAULT_ZPOS;
259 exynos_plane_attach_zpos_property(&exynos_plane->base);
261 return &exynos_plane->base;