summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/gma500/mdfld_dsi_output.c
blob: d758f4cc68055b39b8b02b5202f35f936b653a95 (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
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
/*
 * Copyright © 2010 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 * jim liu <jim.liu@intel.com>
 * Jackie Li<yaodong.li@intel.com>
 */

#include <linux/module.h>

#include "mdfld_dsi_output.h"
#include "mdfld_dsi_dpi.h"
#include "mdfld_output.h"
#include "mdfld_dsi_pkg_sender.h"
#include "tc35876x-dsi-lvds.h"
#include <linux/pm_runtime.h>
#include <asm/intel_scu_ipc.h>

/* get the LABC from command line. */
static int LABC_control = 1;

#ifdef MODULE
module_param(LABC_control, int, 0644);
#else

static int __init parse_LABC_control(char *arg)
{
	/* LABC control can be passed in as a cmdline parameter */
	/* to enable this feature add LABC=1 to cmdline */
	/* to disable this feature add LABC=0 to cmdline */
	if (!arg)
		return -EINVAL;

	if (!strcasecmp(arg, "0"))
		LABC_control = 0;
	else if (!strcasecmp(arg, "1"))
		LABC_control = 1;

	return 0;
}
early_param("LABC", parse_LABC_control);
#endif

/**
 * Check and see if the generic control or data buffer is empty and ready.
 */
void mdfld_dsi_gen_fifo_ready(struct drm_device *dev, u32 gen_fifo_stat_reg,
							u32 fifo_stat)
{
	u32 GEN_BF_time_out_count;

	/* Check MIPI Adatper command registers */
	for (GEN_BF_time_out_count = 0;
			GEN_BF_time_out_count < GEN_FB_TIME_OUT;
			GEN_BF_time_out_count++) {
		if ((REG_READ(gen_fifo_stat_reg) & fifo_stat) == fifo_stat)
			break;
		udelay(100);
	}

	if (GEN_BF_time_out_count == GEN_FB_TIME_OUT)
		DRM_ERROR("mdfld_dsi_gen_fifo_ready, Timeout. gen_fifo_stat_reg = 0x%x.\n",
					gen_fifo_stat_reg);
}

/**
 * Manage the DSI MIPI keyboard and display brightness.
 * FIXME: this is exported to OSPM code. should work out an specific
 * display interface to OSPM.
 */

void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
{
	struct mdfld_dsi_pkg_sender *sender =
				mdfld_dsi_get_pkg_sender(dsi_config);
	struct drm_device *dev;
	struct drm_psb_private *dev_priv;
	u32 gen_ctrl_val;

	if (!sender) {
		DRM_ERROR("No sender found\n");
		return;
	}

	dev = sender->dev;
	dev_priv = dev->dev_private;

	/* Set default display backlight value to 85% (0xd8)*/
	mdfld_dsi_send_mcs_short(sender, write_display_brightness, 0xd8, 1,
				true);

	/* Set minimum brightness setting of CABC function to 20% (0x33)*/
	mdfld_dsi_send_mcs_short(sender, write_cabc_min_bright, 0x33, 1, true);

	/* Enable backlight or/and LABC */
	gen_ctrl_val = BRIGHT_CNTL_BLOCK_ON | DISPLAY_DIMMING_ON |
								BACKLIGHT_ON;
	if (LABC_control == 1)
		gen_ctrl_val |= DISPLAY_DIMMING_ON | DISPLAY_BRIGHTNESS_AUTO
								| GAMMA_AUTO;

	if (LABC_control == 1)
		gen_ctrl_val |= AMBIENT_LIGHT_SENSE_ON;

	dev_priv->mipi_ctrl_display = gen_ctrl_val;

	mdfld_dsi_send_mcs_short(sender, write_ctrl_display, (u8)gen_ctrl_val,
				1, true);

	mdfld_dsi_send_mcs_short(sender, write_ctrl_cabc, UI_IMAGE, 1, true);
}

void mdfld_dsi_brightness_control(struct drm_device *dev, int pipe, int level)
{
	struct mdfld_dsi_pkg_sender *sender;
	struct drm_psb_private *dev_priv;
	struct mdfld_dsi_config *dsi_config;
	u32 gen_ctrl_val = 0;
	int p_type = TMD_VID;

	if (!dev || (pipe != 0 && pipe != 2)) {
		DRM_ERROR("Invalid parameter\n");
		return;
	}

	p_type = mdfld_get_panel_type(dev, 0);

	dev_priv = dev->dev_private;

	if (pipe)
		dsi_config = dev_priv->dsi_configs[1];
	else
		dsi_config = dev_priv->dsi_configs[0];

	sender = mdfld_dsi_get_pkg_sender(dsi_config);

	if (!sender) {
		DRM_ERROR("No sender found\n");
		return;
	}

	gen_ctrl_val = (level * 0xff / MDFLD_DSI_BRIGHTNESS_MAX_LEVEL) & 0xff;

	dev_dbg(sender->dev->dev, "pipe = %d, gen_ctrl_val = %d.\n",
							pipe, gen_ctrl_val);

	if (p_type == TMD_VID) {
		/* Set display backlight value */
		mdfld_dsi_send_mcs_short(sender, tmd_write_display_brightness,
					(u8)gen_ctrl_val, 1, true);
	} else {
		/* Set display backlight value */
		mdfld_dsi_send_mcs_short(sender, write_display_brightness,
					(u8)gen_ctrl_val, 1, true);

		/* Enable backlight control */
		if (level == 0)
			gen_ctrl_val = 0;
		else
			gen_ctrl_val = dev_priv->mipi_ctrl_display;

		mdfld_dsi_send_mcs_short(sender, write_ctrl_display,
					(u8)gen_ctrl_val, 1, true);
	}
}

static int mdfld_dsi_get_panel_status(struct mdfld_dsi_config *dsi_config,
				u8 dcs, u32 *data, bool hs)
{
	struct mdfld_dsi_pkg_sender *sender
		= mdfld_dsi_get_pkg_sender(dsi_config);

	if (!sender || !data) {
		DRM_ERROR("Invalid parameter\n");
		return -EINVAL;
	}

	return mdfld_dsi_read_mcs(sender, dcs, data, 1, hs);
}

int mdfld_dsi_get_power_mode(struct mdfld_dsi_config *dsi_config, u32 *mode,
			bool hs)
{
	if (!dsi_config || !mode) {
		DRM_ERROR("Invalid parameter\n");
		return -EINVAL;
	}

	return mdfld_dsi_get_panel_status(dsi_config, 0x0a, mode, hs);
}

/*
 * NOTE: this function was used by OSPM.
 * TODO: will be removed later, should work out display interfaces for OSPM
 */
void mdfld_dsi_controller_init(struct mdfld_dsi_config *dsi_config, int pipe)
{
	if (!dsi_config || ((pipe != 0) && (pipe != 2))) {
		DRM_ERROR("Invalid parameters\n");
		return;
	}

	mdfld_dsi_dpi_controller_init(dsi_config, pipe);
}

static void mdfld_dsi_connector_save(struct drm_connector *connector)
{
}

static void mdfld_dsi_connector_restore(struct drm_connector *connector)
{
}

/* FIXME: start using the force parameter */
static enum drm_connector_status
mdfld_dsi_connector_detect(struct drm_connector *connector, bool force)
{
	struct mdfld_dsi_connector *dsi_connector
		= mdfld_dsi_connector(connector);

	dsi_connector->status = connector_status_connected;

	return dsi_connector->status;
}

static int mdfld_dsi_connector_set_property(struct drm_connector *connector,
				struct drm_property *property,
				uint64_t value)
{
	struct drm_encoder *encoder = connector->encoder;

	if (!strcmp(property->name, "scaling mode") && encoder) {
		struct gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc);
		bool centerechange;
		uint64_t val;

		if (!gma_crtc)
			goto set_prop_error;

		switch (value) {
		case DRM_MODE_SCALE_FULLSCREEN:
			break;
		case DRM_MODE_SCALE_NO_SCALE:
			break;
		case DRM_MODE_SCALE_ASPECT:
			break;
		default:
			goto set_prop_error;
		}

		if (drm_object_property_get_value(&connector->base, property, &val))
			goto set_prop_error;

		if (val == value)
			goto set_prop_done;

		if (drm_object_property_set_value(&connector->base,
							property, value))
			goto set_prop_error;

		centerechange = (val == DRM_MODE_SCALE_NO_SCALE) ||
			(value == DRM_MODE_SCALE_NO_SCALE);

		if (gma_crtc->saved_mode.hdisplay != 0 &&
		    gma_crtc->saved_mode.vdisplay != 0) {
			if (centerechange) {
				if (!drm_crtc_helper_set_mode(encoder->crtc,
						&gma_crtc->saved_mode,
						encoder->crtc->x,
						encoder->crtc->y,
						encoder->crtc->primary->fb))
					goto set_prop_error;
			} else {
				const struct drm_encoder_helper_funcs *funcs =
						encoder->helper_private;
				funcs->mode_set(encoder,
					&gma_crtc->saved_mode,
					&gma_crtc->saved_adjusted_mode);
			}
		}
	} else if (!strcmp(property->name, "backlight") && encoder) {
		if (drm_object_property_set_value(&connector->base, property,
									value))
			goto set_prop_error;
		else
			gma_backlight_set(encoder->dev, value);
	}
set_prop_done:
	return 0;
set_prop_error:
	return -1;
}

static void mdfld_dsi_connector_destroy(struct drm_connector *connector)
{
	struct mdfld_dsi_connector *dsi_connector =
					mdfld_dsi_connector(connector);
	struct mdfld_dsi_pkg_sender *sender;

	if (!dsi_connector)
		return;
	drm_connector_unregister(connector);
	drm_connector_cleanup(connector);
	sender = dsi_connector->pkg_sender;
	mdfld_dsi_pkg_sender_destroy(sender);
	kfree(dsi_connector);
}

static int mdfld_dsi_connector_get_modes(struct drm_connector *connector)
{
	struct mdfld_dsi_connector *dsi_connector =
				mdfld_dsi_connector(connector);
	struct mdfld_dsi_config *dsi_config =
				mdfld_dsi_get_config(dsi_connector);
	struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
	struct drm_display_mode *dup_mode = NULL;
	struct drm_device *dev = connector->dev;

	connector->display_info.min_vfreq = 0;
	connector->display_info.max_vfreq = 200;
	connector->display_info.min_hfreq = 0;
	connector->display_info.max_hfreq = 200;

	if (fixed_mode) {
		dev_dbg(dev->dev, "fixed_mode %dx%d\n",
				fixed_mode->hdisplay, fixed_mode->vdisplay);
		dup_mode = drm_mode_duplicate(dev, fixed_mode);
		drm_mode_probed_add(connector, dup_mode);
		return 1;
	}
	DRM_ERROR("Didn't get any modes!\n");
	return 0;
}

static int mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
						struct drm_display_mode *mode)
{
	struct mdfld_dsi_connector *dsi_connector =
					mdfld_dsi_connector(connector);
	struct mdfld_dsi_config *dsi_config =
					mdfld_dsi_get_config(dsi_connector);
	struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		return MODE_NO_DBLESCAN;

	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
		return MODE_NO_INTERLACE;

	/**
	 * FIXME: current DC has no fitting unit, reject any mode setting
	 * request
	 * Will figure out a way to do up-scaling(pannel fitting) later.
	 **/
	if (fixed_mode) {
		if (mode->hdisplay != fixed_mode->hdisplay)
			return MODE_PANEL;

		if (mode->vdisplay != fixed_mode->vdisplay)
			return MODE_PANEL;
	}

	return MODE_OK;
}

static void mdfld_dsi_connector_dpms(struct drm_connector *connector, int mode)
{
	if (mode == connector->dpms)
		return;

	/*first, execute dpms*/

	drm_helper_connector_dpms(connector, mode);
}

static struct drm_encoder *mdfld_dsi_connector_best_encoder(
				struct drm_connector *connector)
{
	struct mdfld_dsi_connector *dsi_connector =
				mdfld_dsi_connector(connector);
	struct mdfld_dsi_config *dsi_config =
				mdfld_dsi_get_config(dsi_connector);
	return &dsi_config->encoder->base.base;
}

/*DSI connector funcs*/
static const struct drm_connector_funcs mdfld_dsi_connector_funcs = {
	.dpms = /*drm_helper_connector_dpms*/mdfld_dsi_connector_dpms,
	.detect = mdfld_dsi_connector_detect,
	.fill_modes = drm_helper_probe_single_connector_modes,
	.set_property = mdfld_dsi_connector_set_property,
	.destroy = mdfld_dsi_connector_destroy,
};

/*DSI connector helper funcs*/
static const struct drm_connector_helper_funcs
	mdfld_dsi_connector_helper_funcs = {
	.get_modes = mdfld_dsi_connector_get_modes,
	.mode_valid = mdfld_dsi_connector_mode_valid,
	.best_encoder = mdfld_dsi_connector_best_encoder,
};

static int mdfld_dsi_get_default_config(struct drm_device *dev,
				struct mdfld_dsi_config *config, int pipe)
{
	if (!dev || !config) {
		DRM_ERROR("Invalid parameters");
		return -EINVAL;
	}

	config->bpp = 24;
	if (mdfld_get_panel_type(dev, pipe) == TC35876X)
		config->lane_count = 4;
	else
		config->lane_count = 2;
	config->channel_num = 0;

	if (mdfld_get_panel_type(dev, pipe) == TMD_VID)
		config->video_mode = MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_PULSE;
	else if (mdfld_get_panel_type(dev, pipe) == TC35876X)
		config->video_mode =
				MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_EVENTS;
	else
		config->video_mode = MDFLD_DSI_VIDEO_BURST_MODE;

	return 0;
}

int mdfld_dsi_panel_reset(int pipe)
{
	unsigned gpio;
	int ret = 0;

	switch (pipe) {
	case 0:
		gpio = 128;
		break;
	case 2:
		gpio = 34;
		break;
	default:
		DRM_ERROR("Invalid output\n");
		return -EINVAL;
	}

	ret = gpio_request(gpio, "gfx");
	if (ret) {
		DRM_ERROR("gpio_rqueset failed\n");
		return ret;
	}

	ret = gpio_direction_output(gpio, 1);
	if (ret) {
		DRM_ERROR("gpio_direction_output failed\n");
		goto gpio_error;
	}

	gpio_get_value(128);

gpio_error:
	if (gpio_is_valid(gpio))
		gpio_free(gpio);

	return ret;
}

/*
 * MIPI output init
 * @dev drm device
 * @pipe pipe number. 0 or 2
 * @config
 *
 * Do the initialization of a MIPI output, including create DRM mode objects
 * initialization of DSI output on @pipe
 */
void mdfld_dsi_output_init(struct drm_device *dev,
			   int pipe,
			   const struct panel_funcs *p_vid_funcs)
{
	struct mdfld_dsi_config *dsi_config;
	struct mdfld_dsi_connector *dsi_connector;
	struct drm_connector *connector;
	struct mdfld_dsi_encoder *encoder;
	struct drm_psb_private *dev_priv = dev->dev_private;
	struct panel_info dsi_panel_info;
	u32 width_mm, height_mm;

	dev_dbg(dev->dev, "init DSI output on pipe %d\n", pipe);

	if (pipe != 0 && pipe != 2) {
		DRM_ERROR("Invalid parameter\n");
		return;
	}

	/*create a new connetor*/
	dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
	if (!dsi_connector) {
		DRM_ERROR("No memory");
		return;
	}

	dsi_connector->pipe =  pipe;

	dsi_config = kzalloc(sizeof(struct mdfld_dsi_config),
			GFP_KERNEL);
	if (!dsi_config) {
		DRM_ERROR("cannot allocate memory for DSI config\n");
		goto dsi_init_err0;
	}
	mdfld_dsi_get_default_config(dev, dsi_config, pipe);

	dsi_connector->private = dsi_config;

	dsi_config->changed = 1;
	dsi_config->dev = dev;

	dsi_config->fixed_mode = p_vid_funcs->get_config_mode(dev);
	if (p_vid_funcs->get_panel_info(dev, pipe, &dsi_panel_info))
			goto dsi_init_err0;

	width_mm = dsi_panel_info.width_mm;
	height_mm = dsi_panel_info.height_mm;

	dsi_config->mode = dsi_config->fixed_mode;
	dsi_config->connector = dsi_connector;

	if (!dsi_config->fixed_mode) {
		DRM_ERROR("No pannel fixed mode was found\n");
		goto dsi_init_err0;
	}

	if (pipe && dev_priv->dsi_configs[0]) {
		dsi_config->dvr_ic_inited = 0;
		dev_priv->dsi_configs[1] = dsi_config;
	} else if (pipe == 0) {
		dsi_config->dvr_ic_inited = 1;
		dev_priv->dsi_configs[0] = dsi_config;
	} else {
		DRM_ERROR("Trying to init MIPI1 before MIPI0\n");
		goto dsi_init_err0;
	}


	connector = &dsi_connector->base.base;
	dsi_connector->base.save = mdfld_dsi_connector_save;
	dsi_connector->base.restore = mdfld_dsi_connector_restore;

	drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs,
						DRM_MODE_CONNECTOR_LVDS);
	drm_connector_helper_add(connector, &mdfld_dsi_connector_helper_funcs);

	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
	connector->display_info.width_mm = width_mm;
	connector->display_info.height_mm = height_mm;
	connector->interlace_allowed = false;
	connector->doublescan_allowed = false;

	/*attach properties*/
	drm_object_attach_property(&connector->base,
				dev->mode_config.scaling_mode_property,
				DRM_MODE_SCALE_FULLSCREEN);
	drm_object_attach_property(&connector->base,
				dev_priv->backlight_property,
				MDFLD_DSI_BRIGHTNESS_MAX_LEVEL);

	/*init DSI package sender on this output*/
	if (mdfld_dsi_pkg_sender_init(dsi_connector, pipe)) {
		DRM_ERROR("Package Sender initialization failed on pipe %d\n",
									pipe);
		goto dsi_init_err0;
	}

	encoder = mdfld_dsi_dpi_init(dev, dsi_connector, p_vid_funcs);
	if (!encoder) {
		DRM_ERROR("Create DPI encoder failed\n");
		goto dsi_init_err1;
	}
	encoder->private = dsi_config;
	dsi_config->encoder = encoder;
	encoder->base.type = (pipe == 0) ? INTEL_OUTPUT_MIPI :
		INTEL_OUTPUT_MIPI2;
	drm_connector_register(connector);
	return;

	/*TODO: add code to destroy outputs on error*/
dsi_init_err1:
	/*destroy sender*/
	mdfld_dsi_pkg_sender_destroy(dsi_connector->pkg_sender);

	drm_connector_cleanup(connector);

	kfree(dsi_config->fixed_mode);
	kfree(dsi_config);
dsi_init_err0:
	kfree(dsi_connector);
}