2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Inki Dae <inki.dae@samsung.com>
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
29 #include "drm_crtc_helper.h"
31 #include "exynos_drm_drv.h"
32 #include "exynos_drm_encoder.h"
35 #define to_exynos_connector(x) container_of(x, struct exynos_drm_connector,\
38 struct exynos_drm_connector {
39 struct drm_connector drm_connector;
41 struct exynos_drm_manager *manager;
44 /* convert exynos_video_timings to drm_display_mode */
46 convert_to_display_mode(struct drm_display_mode *mode,
47 struct fb_videomode *timing)
49 DRM_DEBUG_KMS("%s\n", __FILE__);
51 mode->clock = timing->pixclock / 1000;
52 mode->vrefresh = timing->refresh;
54 mode->hdisplay = timing->xres;
55 mode->hsync_start = mode->hdisplay + timing->left_margin;
56 mode->hsync_end = mode->hsync_start + timing->hsync_len;
57 mode->htotal = mode->hsync_end + timing->right_margin;
59 mode->vdisplay = timing->yres;
60 mode->vsync_start = mode->vdisplay + timing->upper_margin;
61 mode->vsync_end = mode->vsync_start + timing->vsync_len;
62 mode->vtotal = mode->vsync_end + timing->lower_margin;
64 if (timing->vmode & FB_VMODE_INTERLACED)
65 mode->flags |= DRM_MODE_FLAG_INTERLACE;
67 if (timing->vmode & FB_VMODE_DOUBLE)
68 mode->flags |= DRM_MODE_FLAG_DBLSCAN;
71 /* convert drm_display_mode to exynos_video_timings */
73 convert_to_video_timing(struct fb_videomode *timing,
74 struct drm_display_mode *mode)
76 DRM_DEBUG_KMS("%s\n", __FILE__);
78 memset(timing, 0, sizeof(*timing));
80 timing->pixclock = mode->clock * 1000;
81 timing->refresh = drm_mode_vrefresh(mode);
83 timing->xres = mode->hdisplay;
84 timing->left_margin = mode->hsync_start - mode->hdisplay;
85 timing->hsync_len = mode->hsync_end - mode->hsync_start;
86 timing->right_margin = mode->htotal - mode->hsync_end;
88 timing->yres = mode->vdisplay;
89 timing->upper_margin = mode->vsync_start - mode->vdisplay;
90 timing->vsync_len = mode->vsync_end - mode->vsync_start;
91 timing->lower_margin = mode->vtotal - mode->vsync_end;
93 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
94 timing->vmode = FB_VMODE_INTERLACED;
96 timing->vmode = FB_VMODE_NONINTERLACED;
98 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
99 timing->vmode |= FB_VMODE_DOUBLE;
102 static int exynos_drm_connector_get_modes(struct drm_connector *connector)
104 struct exynos_drm_connector *exynos_connector =
105 to_exynos_connector(connector);
106 struct exynos_drm_manager *manager = exynos_connector->manager;
107 struct exynos_drm_display *display = manager->display;
110 DRM_DEBUG_KMS("%s\n", __FILE__);
113 DRM_DEBUG_KMS("display is null.\n");
118 * if get_edid() exists then get_edid() callback of hdmi side
119 * is called to get edid data through i2c interface else
120 * get timing from the FIMD driver(display controller).
122 * P.S. in case of lcd panel, count is always 1 if success
123 * because lcd panel has only one mode.
125 if (display->get_edid) {
129 edid = kzalloc(MAX_EDID, GFP_KERNEL);
131 DRM_ERROR("failed to allocate edid\n");
135 ret = display->get_edid(manager->dev, connector,
138 DRM_ERROR("failed to get edid data.\n");
144 drm_mode_connector_update_edid_property(connector, edid);
145 count = drm_add_edid_modes(connector, edid);
147 kfree(connector->display_info.raw_edid);
148 connector->display_info.raw_edid = edid;
150 struct drm_display_mode *mode = drm_mode_create(connector->dev);
151 struct fb_videomode *timing;
153 if (display->get_timing)
154 timing = display->get_timing(manager->dev);
156 drm_mode_destroy(connector->dev, mode);
160 convert_to_display_mode(mode, timing);
162 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
163 drm_mode_set_name(mode);
164 drm_mode_probed_add(connector, mode);
172 static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
173 struct drm_display_mode *mode)
175 struct exynos_drm_connector *exynos_connector =
176 to_exynos_connector(connector);
177 struct exynos_drm_manager *manager = exynos_connector->manager;
178 struct exynos_drm_display *display = manager->display;
179 struct fb_videomode timing;
182 DRM_DEBUG_KMS("%s\n", __FILE__);
184 convert_to_video_timing(&timing, mode);
186 if (display && display->check_timing)
187 if (!display->check_timing(manager->dev, (void *)&timing))
193 struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector)
195 struct drm_device *dev = connector->dev;
196 struct exynos_drm_connector *exynos_connector =
197 to_exynos_connector(connector);
198 struct drm_mode_object *obj;
199 struct drm_encoder *encoder;
201 DRM_DEBUG_KMS("%s\n", __FILE__);
203 obj = drm_mode_object_find(dev, exynos_connector->encoder_id,
204 DRM_MODE_OBJECT_ENCODER);
206 DRM_DEBUG_KMS("Unknown ENCODER ID %d\n",
207 exynos_connector->encoder_id);
211 encoder = obj_to_encoder(obj);
216 static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
217 .get_modes = exynos_drm_connector_get_modes,
218 .mode_valid = exynos_drm_connector_mode_valid,
219 .best_encoder = exynos_drm_best_encoder,
222 /* get detection status of display device. */
223 static enum drm_connector_status
224 exynos_drm_connector_detect(struct drm_connector *connector, bool force)
226 struct exynos_drm_connector *exynos_connector =
227 to_exynos_connector(connector);
228 struct exynos_drm_manager *manager = exynos_connector->manager;
229 struct exynos_drm_display *display = manager->display;
230 enum drm_connector_status status = connector_status_disconnected;
232 DRM_DEBUG_KMS("%s\n", __FILE__);
234 if (display && display->is_connected) {
235 if (display->is_connected(manager->dev))
236 status = connector_status_connected;
238 status = connector_status_disconnected;
244 static void exynos_drm_connector_destroy(struct drm_connector *connector)
246 struct exynos_drm_connector *exynos_connector =
247 to_exynos_connector(connector);
249 DRM_DEBUG_KMS("%s\n", __FILE__);
251 drm_sysfs_connector_remove(connector);
252 drm_connector_cleanup(connector);
253 kfree(exynos_connector);
256 static struct drm_connector_funcs exynos_connector_funcs = {
257 .dpms = drm_helper_connector_dpms,
258 .fill_modes = drm_helper_probe_single_connector_modes,
259 .detect = exynos_drm_connector_detect,
260 .destroy = exynos_drm_connector_destroy,
263 struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
264 struct drm_encoder *encoder)
266 struct exynos_drm_connector *exynos_connector;
267 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
268 struct drm_connector *connector;
272 DRM_DEBUG_KMS("%s\n", __FILE__);
274 exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
275 if (!exynos_connector) {
276 DRM_ERROR("failed to allocate connector\n");
280 connector = &exynos_connector->drm_connector;
282 switch (manager->display->type) {
283 case EXYNOS_DISPLAY_TYPE_HDMI:
284 type = DRM_MODE_CONNECTOR_HDMIA;
285 connector->interlace_allowed = true;
286 connector->polled = DRM_CONNECTOR_POLL_HPD;
289 type = DRM_MODE_CONNECTOR_Unknown;
293 drm_connector_init(dev, connector, &exynos_connector_funcs, type);
294 drm_connector_helper_add(connector, &exynos_connector_helper_funcs);
296 err = drm_sysfs_connector_add(connector);
300 exynos_connector->encoder_id = encoder->base.id;
301 exynos_connector->manager = manager;
302 connector->encoder = encoder;
304 err = drm_mode_connector_attach_encoder(connector, encoder);
306 DRM_ERROR("failed to attach a connector to a encoder\n");
310 DRM_DEBUG_KMS("connector has been created\n");
315 drm_sysfs_connector_remove(connector);
317 drm_connector_cleanup(connector);
318 kfree(exynos_connector);
322 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
323 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
324 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
325 MODULE_DESCRIPTION("Samsung SoC DRM Connector Driver");
326 MODULE_LICENSE("GPL");