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_ops
*display_ops
= manager
->display_ops
;
110 DRM_DEBUG_KMS("%s\n", __FILE__
);
113 DRM_DEBUG_KMS("display_ops 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_ops
->get_edid
) {
129 edid
= kzalloc(MAX_EDID
, GFP_KERNEL
);
131 DRM_ERROR("failed to allocate edid\n");
135 ret
= display_ops
->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_ops
->get_timing
)
154 timing
= display_ops
->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_ops
*display_ops
= manager
->display_ops
;
179 struct fb_videomode timing
;
182 DRM_DEBUG_KMS("%s\n", __FILE__
);
184 convert_to_video_timing(&timing
, mode
);
186 if (display_ops
&& display_ops
->check_timing
)
187 if (!display_ops
->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_ops
*display_ops
=
230 manager
->display_ops
;
231 enum drm_connector_status status
= connector_status_disconnected
;
233 DRM_DEBUG_KMS("%s\n", __FILE__
);
235 if (display_ops
&& display_ops
->is_connected
) {
236 if (display_ops
->is_connected(manager
->dev
))
237 status
= connector_status_connected
;
239 status
= connector_status_disconnected
;
245 static void exynos_drm_connector_destroy(struct drm_connector
*connector
)
247 struct exynos_drm_connector
*exynos_connector
=
248 to_exynos_connector(connector
);
250 DRM_DEBUG_KMS("%s\n", __FILE__
);
252 drm_sysfs_connector_remove(connector
);
253 drm_connector_cleanup(connector
);
254 kfree(exynos_connector
);
257 static struct drm_connector_funcs exynos_connector_funcs
= {
258 .dpms
= drm_helper_connector_dpms
,
259 .fill_modes
= drm_helper_probe_single_connector_modes
,
260 .detect
= exynos_drm_connector_detect
,
261 .destroy
= exynos_drm_connector_destroy
,
264 struct drm_connector
*exynos_drm_connector_create(struct drm_device
*dev
,
265 struct drm_encoder
*encoder
)
267 struct exynos_drm_connector
*exynos_connector
;
268 struct exynos_drm_manager
*manager
= exynos_drm_get_manager(encoder
);
269 struct drm_connector
*connector
;
273 DRM_DEBUG_KMS("%s\n", __FILE__
);
275 exynos_connector
= kzalloc(sizeof(*exynos_connector
), GFP_KERNEL
);
276 if (!exynos_connector
) {
277 DRM_ERROR("failed to allocate connector\n");
281 connector
= &exynos_connector
->drm_connector
;
283 switch (manager
->display_ops
->type
) {
284 case EXYNOS_DISPLAY_TYPE_HDMI
:
285 type
= DRM_MODE_CONNECTOR_HDMIA
;
286 connector
->interlace_allowed
= true;
287 connector
->polled
= DRM_CONNECTOR_POLL_HPD
;
290 type
= DRM_MODE_CONNECTOR_Unknown
;
294 drm_connector_init(dev
, connector
, &exynos_connector_funcs
, type
);
295 drm_connector_helper_add(connector
, &exynos_connector_helper_funcs
);
297 err
= drm_sysfs_connector_add(connector
);
301 exynos_connector
->encoder_id
= encoder
->base
.id
;
302 exynos_connector
->manager
= manager
;
303 connector
->encoder
= encoder
;
305 err
= drm_mode_connector_attach_encoder(connector
, encoder
);
307 DRM_ERROR("failed to attach a connector to a encoder\n");
311 DRM_DEBUG_KMS("connector has been created\n");
316 drm_sysfs_connector_remove(connector
);
318 drm_connector_cleanup(connector
);
319 kfree(exynos_connector
);
323 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
324 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
325 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
326 MODULE_DESCRIPTION("Samsung SoC DRM Connector Driver");
327 MODULE_LICENSE("GPL");