aboutsummaryrefslogtreecommitdiff
path: root/drivers/video/mcde/mcde_dss.c
blob: 846d7c33e332e6131f2bbf7a2b62b556b1f61fd1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
/*
 * Copyright (C) ST-Ericsson AB 2010
 *
 * ST-Ericsson MCDE display sub system driver
 *
 * Author: Marcus Lorentzon <marcus.xm.lorentzon@stericsson.com>
 * for ST-Ericsson.
 *
 * License terms: GNU General Public License (GPL), version 2.
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/slab.h>

#include <video/mcde_dss.h>

#define to_overlay(x) container_of(x, struct mcde_overlay, kobj)

void overlay_release(struct kobject *kobj)
{
	struct mcde_overlay *ovly = to_overlay(kobj);

	kfree(ovly);
}

struct kobj_type ovly_type = {
	.release = overlay_release,
};

static int apply_overlay(struct mcde_overlay *ovly,
				struct mcde_overlay_info *info, bool force)
{
	int ret = 0;
	if (ovly->ddev->invalidate_area) {
		/* TODO: transform ovly coord to screen coords (vmode):
		 * add offset
		 */
		struct mcde_rectangle dirty = info->dirty;
		ret = ovly->ddev->invalidate_area(ovly->ddev, &dirty);
	}

	if (ovly->info.paddr != info->paddr || force)
		mcde_ovly_set_source_buf(ovly->state, info->paddr);

	if (ovly->info.stride != info->stride || ovly->info.fmt != info->fmt ||
									force)
		mcde_ovly_set_source_info(ovly->state, info->stride, info->fmt);
	if (ovly->info.src_x != info->src_x ||
					ovly->info.src_y != info->src_y ||
					ovly->info.w != info->w ||
					ovly->info.h != info->h || force)
		mcde_ovly_set_source_area(ovly->state,
				info->src_x, info->src_y, info->w, info->h);
	if (ovly->info.dst_x != info->dst_x || ovly->info.dst_y != info->dst_y
					|| ovly->info.dst_z != info->dst_z ||
					force)
		mcde_ovly_set_dest_pos(ovly->state,
					info->dst_x, info->dst_y, info->dst_z);

	mcde_ovly_apply(ovly->state);
	ovly->info = *info;

	return ret;
}

/* MCDE DSS operations */

int mcde_dss_enable_display(struct mcde_display_device *ddev)
{
	int ret;
	struct mcde_chnl_state *chnl;

	if (ddev->enabled)
		return 0;

	/* Acquire MCDE resources */
	chnl = mcde_chnl_get(ddev->chnl_id, ddev->fifo, ddev->port);
	if (IS_ERR(chnl)) {
		ret = PTR_ERR(chnl);
		dev_warn(&ddev->dev, "Failed to acquire MCDE channel\n");
		goto get_chnl_failed;
	}
	ddev->chnl_state = chnl;
	/* Initiate display communication */
	ret = ddev->set_power_mode(ddev, MCDE_DISPLAY_PM_STANDBY);
	if (ret < 0) {
		dev_warn(&ddev->dev, "Failed to initialize display\n");
		goto display_failed;
	}

	ret = ddev->set_synchronized_update(ddev, ddev->synchronized_update);
	if (ret < 0)
		dev_warn(&ddev->dev, "Failed to set sync\n");
	/* TODO: call driver for all defaults like sync_update above */

	dev_dbg(&ddev->dev, "Display enabled, chnl=%d\n",
					ddev->chnl_id);
	ddev->enabled = true;
out:
	return ret;

display_failed:
	mcde_chnl_put(ddev->chnl_state);
	ddev->chnl_state = NULL;
get_chnl_failed:
	goto out;
}

void mcde_dss_disable_display(struct mcde_display_device *ddev)
{
	if (!ddev->enabled)
		return;

	/* TODO: Disable overlays */

	(void)ddev->set_power_mode(ddev, MCDE_DISPLAY_PM_OFF);
	mcde_chnl_put(ddev->chnl_state);
	ddev->chnl_state = NULL;

	ddev->enabled = false;

	dev_dbg(&ddev->dev, "Display disabled, chnl=%d\n", ddev->chnl_id);
}

int mcde_dss_apply_channel(struct mcde_display_device *ddev)
{
	if (ddev->apply_config)
		return ddev->apply_config(ddev);
	else
		return -EINVAL;
}

struct mcde_overlay *mcde_dss_create_overlay(struct mcde_display_device *ddev,
	struct mcde_overlay_info *info)
{
	struct mcde_overlay *ovly;

	ovly = kzalloc(sizeof(struct mcde_overlay), GFP_KERNEL);
	if (!ovly)
		return NULL;

	kobject_init(&ovly->kobj, &ovly_type); /* Local ref */
	kobject_get(&ovly->kobj); /* Creator ref */
	INIT_LIST_HEAD(&ovly->list);
	list_add(&ddev->ovlys, &ovly->list);
	ovly->info = *info;
	ovly->ddev = ddev;

	return ovly;
}

void mcde_dss_destroy_overlay(struct mcde_overlay *ovly)
{
	list_del(&ovly->list);
	if (ovly->state)
		mcde_dss_disable_overlay(ovly);
	kobject_put(&ovly->kobj);
}

int mcde_dss_enable_overlay(struct mcde_overlay *ovly)
{
	int ret = 0;

	if (!ovly->ddev->chnl_state)
		return -EINVAL;

	if (!ovly->state) {
		struct mcde_ovly_state *state;
		state = mcde_ovly_get(ovly->ddev->chnl_state);
		if (IS_ERR(state)) {
			ret = PTR_ERR(state);
			dev_warn(&ovly->ddev->dev,
				"Failed to acquire overlay\n");
			goto get_ovly_failed;
		}
		ovly->state = state;
	}

	apply_overlay(ovly, &ovly->info, true);

	dev_vdbg(&ovly->ddev->dev, "Overlay enabled, chnl=%d\n",
							ovly->ddev->chnl_id);

	goto out;
get_ovly_failed:
out:
	return ret;
}

int mcde_dss_apply_overlay(struct mcde_overlay *ovly,
						struct mcde_overlay_info *info)
{
	if (info == NULL)
		info = &ovly->info;
	return apply_overlay(ovly, info, false);
}

void mcde_dss_disable_overlay(struct mcde_overlay *ovly)
{
	if (!ovly->state)
		return;

	mcde_ovly_put(ovly->state);

	dev_dbg(&ovly->ddev->dev, "Overlay disabled, chnl=%d\n",
							ovly->ddev->chnl_id);

	ovly->state = NULL;
}

int mcde_dss_update_overlay(struct mcde_overlay *ovly)
{
	int ret = 0;

	dev_vdbg(&ovly->ddev->dev, "Overlay update, chnl=%d\n",
							ovly->ddev->chnl_id);

	if (!ovly->state || !ovly->ddev->update || !ovly->ddev->invalidate_area)
		return -EINVAL;

	ret = ovly->ddev->update(ovly->ddev);
	if (ret)
		goto out;
	ret = ovly->ddev->invalidate_area(ovly->ddev, NULL);

out:
	return ret;
}

void mcde_dss_get_native_resolution(struct mcde_display_device *ddev,
	u16 *x_res, u16 *y_res)
{
	ddev->get_native_resolution(ddev, x_res, y_res);
}

enum mcde_ovly_pix_fmt mcde_dss_get_default_pixel_format(
	struct mcde_display_device *ddev)
{
	return ddev->get_default_pixel_format(ddev);
}

void mcde_dss_get_physical_size(struct mcde_display_device *ddev,
	u16 *physical_width, u16 *physical_height)
{
	ddev->get_physical_size(ddev, physical_width, physical_height);
}

int mcde_dss_try_video_mode(struct mcde_display_device *ddev,
	struct mcde_video_mode *video_mode)
{
	return ddev->try_video_mode(ddev, video_mode);
}

int mcde_dss_set_video_mode(struct mcde_display_device *ddev,
	struct mcde_video_mode *vmode)
{
	int ret;
	struct mcde_video_mode old_vmode;

	ddev->get_video_mode(ddev, &old_vmode);
	if (memcmp(vmode, &old_vmode, sizeof(old_vmode)) == 0)
		return 0;

	ret = ddev->set_video_mode(ddev, vmode);
	if (ret)
		return ret;

	return ddev->invalidate_area(ddev, NULL);
}

void mcde_dss_get_video_mode(struct mcde_display_device *ddev,
	struct mcde_video_mode *video_mode)
{
	ddev->get_video_mode(ddev, video_mode);
}

int mcde_dss_set_pixel_format(struct mcde_display_device *ddev,
	enum mcde_ovly_pix_fmt pix_fmt)
{
	enum mcde_ovly_pix_fmt old_pix_fmt;

	old_pix_fmt = ddev->get_pixel_format(ddev);
	if (old_pix_fmt == pix_fmt)
		return 0;

	return ddev->set_pixel_format(ddev, pix_fmt);
}

int mcde_dss_get_pixel_format(struct mcde_display_device *ddev)
{
	return ddev->get_pixel_format(ddev);
}

int mcde_dss_set_rotation(struct mcde_display_device *ddev,
	enum mcde_display_rotation rotation)
{
	enum mcde_display_rotation old_rotation;

	old_rotation = ddev->get_rotation(ddev);
	if (old_rotation == rotation)
		return 0;

	return ddev->set_rotation(ddev, rotation);
}

enum mcde_display_rotation mcde_dss_get_rotation(
	struct mcde_display_device *ddev)
{
	return ddev->get_rotation(ddev);
}

int mcde_dss_set_synchronized_update(struct mcde_display_device *ddev,
	bool enable)
{
	int ret;
	ret = ddev->set_synchronized_update(ddev, enable);
	if (ret)
		return ret;
	if (ddev->chnl_state)
		mcde_chnl_enable_synchronized_update(ddev->chnl_state, enable);
	return 0;
}

bool mcde_dss_get_synchronized_update(struct mcde_display_device *ddev)
{
	return ddev->get_synchronized_update(ddev);
}

int __init mcde_dss_init(void)
{
	return 0;
}

void mcde_dss_exit(void)
{
}