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 unsigned int actual_w;
96 unsigned int actual_h;
98 actual_w = exynos_plane_get_size(crtc_x, crtc_w, crtc->mode.hdisplay);
99 actual_h = exynos_plane_get_size(crtc_y, crtc_h, crtc->mode.vdisplay);
113 /* set drm framebuffer data. */
114 exynos_plane->fb_x = src_x;
115 exynos_plane->fb_y = src_y;
116 exynos_plane->fb_width = fb->width;
117 exynos_plane->fb_height = fb->height;
118 exynos_plane->src_width = src_w;
119 exynos_plane->src_height = src_h;
120 exynos_plane->bpp = fb->bits_per_pixel;
121 exynos_plane->pitch = fb->pitches[0];
122 exynos_plane->pixel_format = fb->pixel_format;
124 /* set plane range to be displayed. */
125 exynos_plane->crtc_x = crtc_x;
126 exynos_plane->crtc_y = crtc_y;
127 exynos_plane->crtc_width = actual_w;
128 exynos_plane->crtc_height = actual_h;
130 /* set drm mode data. */
131 exynos_plane->mode_width = crtc->mode.hdisplay;
132 exynos_plane->mode_height = crtc->mode.vdisplay;
133 exynos_plane->refresh = crtc->mode.vrefresh;
134 exynos_plane->scan_flag = crtc->mode.flags;
136 DRM_DEBUG_KMS("plane : offset_x/y(%d,%d), width/height(%d,%d)",
137 exynos_plane->crtc_x, exynos_plane->crtc_y,
138 exynos_plane->crtc_width, exynos_plane->crtc_height);
144 exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
145 struct drm_framebuffer *fb, int crtc_x, int crtc_y,
146 unsigned int crtc_w, unsigned int crtc_h,
147 uint32_t src_x, uint32_t src_y,
148 uint32_t src_w, uint32_t src_h)
151 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
152 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
155 ret = exynos_check_plane(plane, fb);
159 exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y,
160 crtc_w, crtc_h, src_x >> 16, src_y >> 16,
161 src_w >> 16, src_h >> 16);
163 if (exynos_crtc->ops->win_commit)
164 exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
169 static int exynos_disable_plane(struct drm_plane *plane)
171 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
172 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(plane->crtc);
174 if (exynos_crtc && exynos_crtc->ops->win_disable)
175 exynos_crtc->ops->win_disable(exynos_crtc,
181 static void exynos_plane_destroy(struct drm_plane *plane)
183 exynos_disable_plane(plane);
184 drm_plane_cleanup(plane);
187 static int exynos_plane_set_property(struct drm_plane *plane,
188 struct drm_property *property,
191 struct drm_device *dev = plane->dev;
192 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
193 struct exynos_drm_private *dev_priv = dev->dev_private;
195 if (property == dev_priv->plane_zpos_property) {
196 exynos_plane->zpos = val;
203 static struct drm_plane_funcs exynos_plane_funcs = {
204 .update_plane = exynos_update_plane,
205 .disable_plane = exynos_disable_plane,
206 .destroy = exynos_plane_destroy,
207 .set_property = exynos_plane_set_property,
210 static void exynos_plane_attach_zpos_property(struct drm_plane *plane)
212 struct drm_device *dev = plane->dev;
213 struct exynos_drm_private *dev_priv = dev->dev_private;
214 struct drm_property *prop;
216 prop = dev_priv->plane_zpos_property;
218 prop = drm_property_create_range(dev, 0, "zpos", 0,
223 dev_priv->plane_zpos_property = prop;
226 drm_object_attach_property(&plane->base, prop, 0);
229 int exynos_plane_init(struct drm_device *dev,
230 struct exynos_drm_plane *exynos_plane,
231 unsigned long possible_crtcs, enum drm_plane_type type)
235 err = drm_universal_plane_init(dev, &exynos_plane->base, possible_crtcs,
236 &exynos_plane_funcs, formats,
237 ARRAY_SIZE(formats), type);
239 DRM_ERROR("failed to initialize plane\n");
243 if (type == DRM_PLANE_TYPE_PRIMARY)
244 exynos_plane->zpos = DEFAULT_ZPOS;
246 exynos_plane_attach_zpos_property(&exynos_plane->base);