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;
42 /* convert exynos_video_timings to drm_display_mode */
44 convert_to_display_mode(struct drm_display_mode *mode,
45 struct fb_videomode *timing)
47 DRM_DEBUG_KMS("%s\n", __FILE__);
49 mode->clock = timing->pixclock / 1000;
50 mode->vrefresh = timing->refresh;
52 mode->hdisplay = timing->xres;
53 mode->hsync_start = mode->hdisplay + timing->left_margin;
54 mode->hsync_end = mode->hsync_start + timing->hsync_len;
55 mode->htotal = mode->hsync_end + timing->right_margin;
57 mode->vdisplay = timing->yres;
58 mode->vsync_start = mode->vdisplay + timing->upper_margin;
59 mode->vsync_end = mode->vsync_start + timing->vsync_len;
60 mode->vtotal = mode->vsync_end + timing->lower_margin;
62 if (timing->vmode & FB_VMODE_INTERLACED)
63 mode->flags |= DRM_MODE_FLAG_INTERLACE;
65 if (timing->vmode & FB_VMODE_DOUBLE)
66 mode->flags |= DRM_MODE_FLAG_DBLSCAN;
69 /* convert drm_display_mode to exynos_video_timings */
71 convert_to_video_timing(struct fb_videomode *timing,
72 struct drm_display_mode *mode)
74 DRM_DEBUG_KMS("%s\n", __FILE__);
76 memset(timing, 0, sizeof(*timing));
78 timing->pixclock = mode->clock * 1000;
79 timing->refresh = drm_mode_vrefresh(mode);
81 timing->xres = mode->hdisplay;
82 timing->left_margin = mode->hsync_start - mode->hdisplay;
83 timing->hsync_len = mode->hsync_end - mode->hsync_start;
84 timing->right_margin = mode->htotal - mode->hsync_end;
86 timing->yres = mode->vdisplay;
87 timing->upper_margin = mode->vsync_start - mode->vdisplay;
88 timing->vsync_len = mode->vsync_end - mode->vsync_start;
89 timing->lower_margin = mode->vtotal - mode->vsync_end;
91 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
92 timing->vmode = FB_VMODE_INTERLACED;
94 timing->vmode = FB_VMODE_NONINTERLACED;
96 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
97 timing->vmode |= FB_VMODE_DOUBLE;
100 static int exynos_drm_connector_get_modes(struct drm_connector *connector)
102 struct exynos_drm_manager *manager =
103 exynos_drm_get_manager(connector->encoder);
104 struct exynos_drm_display *display = manager->display;
107 DRM_DEBUG_KMS("%s\n", __FILE__);
110 DRM_DEBUG_KMS("display is null.\n");
115 * if get_edid() exists then get_edid() callback of hdmi side
116 * is called to get edid data through i2c interface else
117 * get timing from the FIMD driver(display controller).
119 * P.S. in case of lcd panel, count is always 1 if success
120 * because lcd panel has only one mode.
122 if (display->get_edid) {
126 edid = kzalloc(MAX_EDID, GFP_KERNEL);
128 DRM_ERROR("failed to allocate edid\n");
132 ret = display->get_edid(manager->dev, connector,
135 DRM_ERROR("failed to get edid data.\n");
141 drm_mode_connector_update_edid_property(connector, edid);
142 count = drm_add_edid_modes(connector, edid);
144 kfree(connector->display_info.raw_edid);
145 connector->display_info.raw_edid = edid;
147 struct drm_display_mode *mode = drm_mode_create(connector->dev);
148 struct fb_videomode *timing;
150 if (display->get_timing)
151 timing = display->get_timing(manager->dev);
153 drm_mode_destroy(connector->dev, mode);
157 convert_to_display_mode(mode, timing);
159 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
160 drm_mode_set_name(mode);
161 drm_mode_probed_add(connector, mode);
169 static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
170 struct drm_display_mode *mode)
172 struct exynos_drm_manager *manager =
173 exynos_drm_get_manager(connector->encoder);
174 struct exynos_drm_display *display = manager->display;
175 struct fb_videomode timing;
178 DRM_DEBUG_KMS("%s\n", __FILE__);
180 convert_to_video_timing(&timing, mode);
182 if (display && display->check_timing)
183 if (!display->check_timing(manager->dev, (void *)&timing))
189 struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector)
191 DRM_DEBUG_KMS("%s\n", __FILE__);
193 return connector->encoder;
196 static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
197 .get_modes = exynos_drm_connector_get_modes,
198 .mode_valid = exynos_drm_connector_mode_valid,
199 .best_encoder = exynos_drm_best_encoder,
202 /* get detection status of display device. */
203 static enum drm_connector_status
204 exynos_drm_connector_detect(struct drm_connector *connector, bool force)
206 struct exynos_drm_manager *manager =
207 exynos_drm_get_manager(connector->encoder);
208 struct exynos_drm_display *display = manager->display;
209 enum drm_connector_status status = connector_status_disconnected;
211 DRM_DEBUG_KMS("%s\n", __FILE__);
213 if (display && display->is_connected) {
214 if (display->is_connected(manager->dev))
215 status = connector_status_connected;
217 status = connector_status_disconnected;
223 static void exynos_drm_connector_destroy(struct drm_connector *connector)
225 struct exynos_drm_connector *exynos_connector =
226 to_exynos_connector(connector);
228 DRM_DEBUG_KMS("%s\n", __FILE__);
230 drm_sysfs_connector_remove(connector);
231 drm_connector_cleanup(connector);
232 kfree(exynos_connector);
235 static struct drm_connector_funcs exynos_connector_funcs = {
236 .dpms = drm_helper_connector_dpms,
237 .fill_modes = drm_helper_probe_single_connector_modes,
238 .detect = exynos_drm_connector_detect,
239 .destroy = exynos_drm_connector_destroy,
242 struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
243 struct drm_encoder *encoder)
245 struct exynos_drm_connector *exynos_connector;
246 struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
247 struct drm_connector *connector;
251 DRM_DEBUG_KMS("%s\n", __FILE__);
253 exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
254 if (!exynos_connector) {
255 DRM_ERROR("failed to allocate connector\n");
259 connector = &exynos_connector->drm_connector;
261 switch (manager->display->type) {
262 case EXYNOS_DISPLAY_TYPE_HDMI:
263 type = DRM_MODE_CONNECTOR_HDMIA;
264 connector->interlace_allowed = true;
265 connector->polled = DRM_CONNECTOR_POLL_HPD;
268 type = DRM_MODE_CONNECTOR_Unknown;
272 drm_connector_init(dev, connector, &exynos_connector_funcs, type);
273 drm_connector_helper_add(connector, &exynos_connector_helper_funcs);
275 err = drm_sysfs_connector_add(connector);
279 connector->encoder = encoder;
280 err = drm_mode_connector_attach_encoder(connector, encoder);
282 DRM_ERROR("failed to attach a connector to a encoder\n");
286 DRM_DEBUG_KMS("connector has been created\n");
291 drm_sysfs_connector_remove(connector);
293 drm_connector_cleanup(connector);
294 kfree(exynos_connector);
298 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
299 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
300 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
301 MODULE_DESCRIPTION("Samsung SoC DRM Connector Driver");
302 MODULE_LICENSE("GPL");