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");