1 /*
2 * Copyright © 2010 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * jim liu <jim.liu@intel.com>
25 * Jackie Li<yaodong.li@intel.com>
26 */
27
28 #include <linux/module.h>
29
30 #include "mdfld_dsi_output.h"
31 #include "mdfld_dsi_dpi.h"
32 #include "mdfld_output.h"
33 #include "mdfld_dsi_pkg_sender.h"
34 #include "tc35876x-dsi-lvds.h"
35 #include <linux/pm_runtime.h>
36 #include <asm/intel_scu_ipc.h>
37
38 /* get the LABC from command line. */
39 static int LABC_control = 1;
40
41 #ifdef MODULE
42 module_param(LABC_control, int, 0644);
43 #else
44
parse_LABC_control(char * arg)45 static int __init parse_LABC_control(char *arg)
46 {
47 /* LABC control can be passed in as a cmdline parameter */
48 /* to enable this feature add LABC=1 to cmdline */
49 /* to disable this feature add LABC=0 to cmdline */
50 if (!arg)
51 return -EINVAL;
52
53 if (!strcasecmp(arg, "0"))
54 LABC_control = 0;
55 else if (!strcasecmp(arg, "1"))
56 LABC_control = 1;
57
58 return 0;
59 }
60 early_param("LABC", parse_LABC_control);
61 #endif
62
63 /**
64 * Check and see if the generic control or data buffer is empty and ready.
65 */
mdfld_dsi_gen_fifo_ready(struct drm_device * dev,u32 gen_fifo_stat_reg,u32 fifo_stat)66 void mdfld_dsi_gen_fifo_ready(struct drm_device *dev, u32 gen_fifo_stat_reg,
67 u32 fifo_stat)
68 {
69 u32 GEN_BF_time_out_count;
70
71 /* Check MIPI Adatper command registers */
72 for (GEN_BF_time_out_count = 0;
73 GEN_BF_time_out_count < GEN_FB_TIME_OUT;
74 GEN_BF_time_out_count++) {
75 if ((REG_READ(gen_fifo_stat_reg) & fifo_stat) == fifo_stat)
76 break;
77 udelay(100);
78 }
79
80 if (GEN_BF_time_out_count == GEN_FB_TIME_OUT)
81 DRM_ERROR("mdfld_dsi_gen_fifo_ready, Timeout. gen_fifo_stat_reg = 0x%x.\n",
82 gen_fifo_stat_reg);
83 }
84
85 /**
86 * Manage the DSI MIPI keyboard and display brightness.
87 * FIXME: this is exported to OSPM code. should work out an specific
88 * display interface to OSPM.
89 */
90
mdfld_dsi_brightness_init(struct mdfld_dsi_config * dsi_config,int pipe)91 void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
92 {
93 struct mdfld_dsi_pkg_sender *sender =
94 mdfld_dsi_get_pkg_sender(dsi_config);
95 struct drm_device *dev;
96 struct drm_psb_private *dev_priv;
97 u32 gen_ctrl_val;
98
99 if (!sender) {
100 DRM_ERROR("No sender found\n");
101 return;
102 }
103
104 dev = sender->dev;
105 dev_priv = dev->dev_private;
106
107 /* Set default display backlight value to 85% (0xd8)*/
108 mdfld_dsi_send_mcs_short(sender, write_display_brightness, 0xd8, 1,
109 true);
110
111 /* Set minimum brightness setting of CABC function to 20% (0x33)*/
112 mdfld_dsi_send_mcs_short(sender, write_cabc_min_bright, 0x33, 1, true);
113
114 /* Enable backlight or/and LABC */
115 gen_ctrl_val = BRIGHT_CNTL_BLOCK_ON | DISPLAY_DIMMING_ON |
116 BACKLIGHT_ON;
117 if (LABC_control == 1)
118 gen_ctrl_val |= DISPLAY_DIMMING_ON | DISPLAY_BRIGHTNESS_AUTO
119 | GAMMA_AUTO;
120
121 if (LABC_control == 1)
122 gen_ctrl_val |= AMBIENT_LIGHT_SENSE_ON;
123
124 dev_priv->mipi_ctrl_display = gen_ctrl_val;
125
126 mdfld_dsi_send_mcs_short(sender, write_ctrl_display, (u8)gen_ctrl_val,
127 1, true);
128
129 mdfld_dsi_send_mcs_short(sender, write_ctrl_cabc, UI_IMAGE, 1, true);
130 }
131
mdfld_dsi_brightness_control(struct drm_device * dev,int pipe,int level)132 void mdfld_dsi_brightness_control(struct drm_device *dev, int pipe, int level)
133 {
134 struct mdfld_dsi_pkg_sender *sender;
135 struct drm_psb_private *dev_priv;
136 struct mdfld_dsi_config *dsi_config;
137 u32 gen_ctrl_val = 0;
138 int p_type = TMD_VID;
139
140 if (!dev || (pipe != 0 && pipe != 2)) {
141 DRM_ERROR("Invalid parameter\n");
142 return;
143 }
144
145 p_type = mdfld_get_panel_type(dev, 0);
146
147 dev_priv = dev->dev_private;
148
149 if (pipe)
150 dsi_config = dev_priv->dsi_configs[1];
151 else
152 dsi_config = dev_priv->dsi_configs[0];
153
154 sender = mdfld_dsi_get_pkg_sender(dsi_config);
155
156 if (!sender) {
157 DRM_ERROR("No sender found\n");
158 return;
159 }
160
161 gen_ctrl_val = (level * 0xff / MDFLD_DSI_BRIGHTNESS_MAX_LEVEL) & 0xff;
162
163 dev_dbg(sender->dev->dev, "pipe = %d, gen_ctrl_val = %d.\n",
164 pipe, gen_ctrl_val);
165
166 if (p_type == TMD_VID) {
167 /* Set display backlight value */
168 mdfld_dsi_send_mcs_short(sender, tmd_write_display_brightness,
169 (u8)gen_ctrl_val, 1, true);
170 } else {
171 /* Set display backlight value */
172 mdfld_dsi_send_mcs_short(sender, write_display_brightness,
173 (u8)gen_ctrl_val, 1, true);
174
175 /* Enable backlight control */
176 if (level == 0)
177 gen_ctrl_val = 0;
178 else
179 gen_ctrl_val = dev_priv->mipi_ctrl_display;
180
181 mdfld_dsi_send_mcs_short(sender, write_ctrl_display,
182 (u8)gen_ctrl_val, 1, true);
183 }
184 }
185
mdfld_dsi_get_panel_status(struct mdfld_dsi_config * dsi_config,u8 dcs,u32 * data,bool hs)186 static int mdfld_dsi_get_panel_status(struct mdfld_dsi_config *dsi_config,
187 u8 dcs, u32 *data, bool hs)
188 {
189 struct mdfld_dsi_pkg_sender *sender
190 = mdfld_dsi_get_pkg_sender(dsi_config);
191
192 if (!sender || !data) {
193 DRM_ERROR("Invalid parameter\n");
194 return -EINVAL;
195 }
196
197 return mdfld_dsi_read_mcs(sender, dcs, data, 1, hs);
198 }
199
mdfld_dsi_get_power_mode(struct mdfld_dsi_config * dsi_config,u32 * mode,bool hs)200 int mdfld_dsi_get_power_mode(struct mdfld_dsi_config *dsi_config, u32 *mode,
201 bool hs)
202 {
203 if (!dsi_config || !mode) {
204 DRM_ERROR("Invalid parameter\n");
205 return -EINVAL;
206 }
207
208 return mdfld_dsi_get_panel_status(dsi_config, 0x0a, mode, hs);
209 }
210
211 /*
212 * NOTE: this function was used by OSPM.
213 * TODO: will be removed later, should work out display interfaces for OSPM
214 */
mdfld_dsi_controller_init(struct mdfld_dsi_config * dsi_config,int pipe)215 void mdfld_dsi_controller_init(struct mdfld_dsi_config *dsi_config, int pipe)
216 {
217 if (!dsi_config || ((pipe != 0) && (pipe != 2))) {
218 DRM_ERROR("Invalid parameters\n");
219 return;
220 }
221
222 mdfld_dsi_dpi_controller_init(dsi_config, pipe);
223 }
224
mdfld_dsi_connector_save(struct drm_connector * connector)225 static void mdfld_dsi_connector_save(struct drm_connector *connector)
226 {
227 }
228
mdfld_dsi_connector_restore(struct drm_connector * connector)229 static void mdfld_dsi_connector_restore(struct drm_connector *connector)
230 {
231 }
232
233 /* FIXME: start using the force parameter */
234 static enum drm_connector_status
mdfld_dsi_connector_detect(struct drm_connector * connector,bool force)235 mdfld_dsi_connector_detect(struct drm_connector *connector, bool force)
236 {
237 struct mdfld_dsi_connector *dsi_connector
238 = mdfld_dsi_connector(connector);
239
240 dsi_connector->status = connector_status_connected;
241
242 return dsi_connector->status;
243 }
244
mdfld_dsi_connector_set_property(struct drm_connector * connector,struct drm_property * property,uint64_t value)245 static int mdfld_dsi_connector_set_property(struct drm_connector *connector,
246 struct drm_property *property,
247 uint64_t value)
248 {
249 struct drm_encoder *encoder = connector->encoder;
250
251 if (!strcmp(property->name, "scaling mode") && encoder) {
252 struct gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc);
253 bool centerechange;
254 uint64_t val;
255
256 if (!gma_crtc)
257 goto set_prop_error;
258
259 switch (value) {
260 case DRM_MODE_SCALE_FULLSCREEN:
261 break;
262 case DRM_MODE_SCALE_NO_SCALE:
263 break;
264 case DRM_MODE_SCALE_ASPECT:
265 break;
266 default:
267 goto set_prop_error;
268 }
269
270 if (drm_object_property_get_value(&connector->base, property, &val))
271 goto set_prop_error;
272
273 if (val == value)
274 goto set_prop_done;
275
276 if (drm_object_property_set_value(&connector->base,
277 property, value))
278 goto set_prop_error;
279
280 centerechange = (val == DRM_MODE_SCALE_NO_SCALE) ||
281 (value == DRM_MODE_SCALE_NO_SCALE);
282
283 if (gma_crtc->saved_mode.hdisplay != 0 &&
284 gma_crtc->saved_mode.vdisplay != 0) {
285 if (centerechange) {
286 if (!drm_crtc_helper_set_mode(encoder->crtc,
287 &gma_crtc->saved_mode,
288 encoder->crtc->x,
289 encoder->crtc->y,
290 encoder->crtc->primary->fb))
291 goto set_prop_error;
292 } else {
293 const struct drm_encoder_helper_funcs *funcs =
294 encoder->helper_private;
295 funcs->mode_set(encoder,
296 &gma_crtc->saved_mode,
297 &gma_crtc->saved_adjusted_mode);
298 }
299 }
300 } else if (!strcmp(property->name, "backlight") && encoder) {
301 if (drm_object_property_set_value(&connector->base, property,
302 value))
303 goto set_prop_error;
304 else
305 gma_backlight_set(encoder->dev, value);
306 }
307 set_prop_done:
308 return 0;
309 set_prop_error:
310 return -1;
311 }
312
mdfld_dsi_connector_destroy(struct drm_connector * connector)313 static void mdfld_dsi_connector_destroy(struct drm_connector *connector)
314 {
315 struct mdfld_dsi_connector *dsi_connector =
316 mdfld_dsi_connector(connector);
317 struct mdfld_dsi_pkg_sender *sender;
318
319 if (!dsi_connector)
320 return;
321 drm_connector_unregister(connector);
322 drm_connector_cleanup(connector);
323 sender = dsi_connector->pkg_sender;
324 mdfld_dsi_pkg_sender_destroy(sender);
325 kfree(dsi_connector);
326 }
327
mdfld_dsi_connector_get_modes(struct drm_connector * connector)328 static int mdfld_dsi_connector_get_modes(struct drm_connector *connector)
329 {
330 struct mdfld_dsi_connector *dsi_connector =
331 mdfld_dsi_connector(connector);
332 struct mdfld_dsi_config *dsi_config =
333 mdfld_dsi_get_config(dsi_connector);
334 struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
335 struct drm_display_mode *dup_mode = NULL;
336 struct drm_device *dev = connector->dev;
337
338 if (fixed_mode) {
339 dev_dbg(dev->dev, "fixed_mode %dx%d\n",
340 fixed_mode->hdisplay, fixed_mode->vdisplay);
341 dup_mode = drm_mode_duplicate(dev, fixed_mode);
342 drm_mode_probed_add(connector, dup_mode);
343 return 1;
344 }
345 DRM_ERROR("Didn't get any modes!\n");
346 return 0;
347 }
348
mdfld_dsi_connector_mode_valid(struct drm_connector * connector,struct drm_display_mode * mode)349 static enum drm_mode_status mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
350 struct drm_display_mode *mode)
351 {
352 struct mdfld_dsi_connector *dsi_connector =
353 mdfld_dsi_connector(connector);
354 struct mdfld_dsi_config *dsi_config =
355 mdfld_dsi_get_config(dsi_connector);
356 struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
357
358 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
359 return MODE_NO_DBLESCAN;
360
361 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
362 return MODE_NO_INTERLACE;
363
364 /**
365 * FIXME: current DC has no fitting unit, reject any mode setting
366 * request
367 * Will figure out a way to do up-scaling(pannel fitting) later.
368 **/
369 if (fixed_mode) {
370 if (mode->hdisplay != fixed_mode->hdisplay)
371 return MODE_PANEL;
372
373 if (mode->vdisplay != fixed_mode->vdisplay)
374 return MODE_PANEL;
375 }
376
377 return MODE_OK;
378 }
379
mdfld_dsi_connector_best_encoder(struct drm_connector * connector)380 static struct drm_encoder *mdfld_dsi_connector_best_encoder(
381 struct drm_connector *connector)
382 {
383 struct mdfld_dsi_connector *dsi_connector =
384 mdfld_dsi_connector(connector);
385 struct mdfld_dsi_config *dsi_config =
386 mdfld_dsi_get_config(dsi_connector);
387 return &dsi_config->encoder->base.base;
388 }
389
390 /*DSI connector funcs*/
391 static const struct drm_connector_funcs mdfld_dsi_connector_funcs = {
392 .dpms = drm_helper_connector_dpms,
393 .detect = mdfld_dsi_connector_detect,
394 .fill_modes = drm_helper_probe_single_connector_modes,
395 .set_property = mdfld_dsi_connector_set_property,
396 .destroy = mdfld_dsi_connector_destroy,
397 };
398
399 /*DSI connector helper funcs*/
400 static const struct drm_connector_helper_funcs
401 mdfld_dsi_connector_helper_funcs = {
402 .get_modes = mdfld_dsi_connector_get_modes,
403 .mode_valid = mdfld_dsi_connector_mode_valid,
404 .best_encoder = mdfld_dsi_connector_best_encoder,
405 };
406
mdfld_dsi_get_default_config(struct drm_device * dev,struct mdfld_dsi_config * config,int pipe)407 static int mdfld_dsi_get_default_config(struct drm_device *dev,
408 struct mdfld_dsi_config *config, int pipe)
409 {
410 if (!dev || !config) {
411 DRM_ERROR("Invalid parameters");
412 return -EINVAL;
413 }
414
415 config->bpp = 24;
416 if (mdfld_get_panel_type(dev, pipe) == TC35876X)
417 config->lane_count = 4;
418 else
419 config->lane_count = 2;
420 config->channel_num = 0;
421
422 if (mdfld_get_panel_type(dev, pipe) == TMD_VID)
423 config->video_mode = MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_PULSE;
424 else if (mdfld_get_panel_type(dev, pipe) == TC35876X)
425 config->video_mode =
426 MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_EVENTS;
427 else
428 config->video_mode = MDFLD_DSI_VIDEO_BURST_MODE;
429
430 return 0;
431 }
432
mdfld_dsi_panel_reset(int pipe)433 int mdfld_dsi_panel_reset(int pipe)
434 {
435 unsigned gpio;
436 int ret = 0;
437
438 switch (pipe) {
439 case 0:
440 gpio = 128;
441 break;
442 case 2:
443 gpio = 34;
444 break;
445 default:
446 DRM_ERROR("Invalid output\n");
447 return -EINVAL;
448 }
449
450 ret = gpio_request(gpio, "gfx");
451 if (ret) {
452 DRM_ERROR("gpio_rqueset failed\n");
453 return ret;
454 }
455
456 ret = gpio_direction_output(gpio, 1);
457 if (ret) {
458 DRM_ERROR("gpio_direction_output failed\n");
459 goto gpio_error;
460 }
461
462 gpio_get_value(128);
463
464 gpio_error:
465 if (gpio_is_valid(gpio))
466 gpio_free(gpio);
467
468 return ret;
469 }
470
471 /*
472 * MIPI output init
473 * @dev drm device
474 * @pipe pipe number. 0 or 2
475 * @config
476 *
477 * Do the initialization of a MIPI output, including create DRM mode objects
478 * initialization of DSI output on @pipe
479 */
mdfld_dsi_output_init(struct drm_device * dev,int pipe,const struct panel_funcs * p_vid_funcs)480 void mdfld_dsi_output_init(struct drm_device *dev,
481 int pipe,
482 const struct panel_funcs *p_vid_funcs)
483 {
484 struct mdfld_dsi_config *dsi_config;
485 struct mdfld_dsi_connector *dsi_connector;
486 struct drm_connector *connector;
487 struct mdfld_dsi_encoder *encoder;
488 struct drm_psb_private *dev_priv = dev->dev_private;
489 struct panel_info dsi_panel_info;
490 u32 width_mm, height_mm;
491
492 dev_dbg(dev->dev, "init DSI output on pipe %d\n", pipe);
493
494 if (pipe != 0 && pipe != 2) {
495 DRM_ERROR("Invalid parameter\n");
496 return;
497 }
498
499 /*create a new connetor*/
500 dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
501 if (!dsi_connector) {
502 DRM_ERROR("No memory");
503 return;
504 }
505
506 dsi_connector->pipe = pipe;
507
508 dsi_config = kzalloc(sizeof(struct mdfld_dsi_config),
509 GFP_KERNEL);
510 if (!dsi_config) {
511 DRM_ERROR("cannot allocate memory for DSI config\n");
512 goto dsi_init_err0;
513 }
514 mdfld_dsi_get_default_config(dev, dsi_config, pipe);
515
516 dsi_connector->private = dsi_config;
517
518 dsi_config->changed = 1;
519 dsi_config->dev = dev;
520
521 dsi_config->fixed_mode = p_vid_funcs->get_config_mode(dev);
522 if (p_vid_funcs->get_panel_info(dev, pipe, &dsi_panel_info))
523 goto dsi_init_err0;
524
525 width_mm = dsi_panel_info.width_mm;
526 height_mm = dsi_panel_info.height_mm;
527
528 dsi_config->mode = dsi_config->fixed_mode;
529 dsi_config->connector = dsi_connector;
530
531 if (!dsi_config->fixed_mode) {
532 DRM_ERROR("No pannel fixed mode was found\n");
533 goto dsi_init_err0;
534 }
535
536 if (pipe && dev_priv->dsi_configs[0]) {
537 dsi_config->dvr_ic_inited = 0;
538 dev_priv->dsi_configs[1] = dsi_config;
539 } else if (pipe == 0) {
540 dsi_config->dvr_ic_inited = 1;
541 dev_priv->dsi_configs[0] = dsi_config;
542 } else {
543 DRM_ERROR("Trying to init MIPI1 before MIPI0\n");
544 goto dsi_init_err0;
545 }
546
547
548 connector = &dsi_connector->base.base;
549 dsi_connector->base.save = mdfld_dsi_connector_save;
550 dsi_connector->base.restore = mdfld_dsi_connector_restore;
551
552 drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs,
553 DRM_MODE_CONNECTOR_LVDS);
554 drm_connector_helper_add(connector, &mdfld_dsi_connector_helper_funcs);
555
556 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
557 connector->display_info.width_mm = width_mm;
558 connector->display_info.height_mm = height_mm;
559 connector->interlace_allowed = false;
560 connector->doublescan_allowed = false;
561
562 /*attach properties*/
563 drm_object_attach_property(&connector->base,
564 dev->mode_config.scaling_mode_property,
565 DRM_MODE_SCALE_FULLSCREEN);
566 drm_object_attach_property(&connector->base,
567 dev_priv->backlight_property,
568 MDFLD_DSI_BRIGHTNESS_MAX_LEVEL);
569
570 /*init DSI package sender on this output*/
571 if (mdfld_dsi_pkg_sender_init(dsi_connector, pipe)) {
572 DRM_ERROR("Package Sender initialization failed on pipe %d\n",
573 pipe);
574 goto dsi_init_err0;
575 }
576
577 encoder = mdfld_dsi_dpi_init(dev, dsi_connector, p_vid_funcs);
578 if (!encoder) {
579 DRM_ERROR("Create DPI encoder failed\n");
580 goto dsi_init_err1;
581 }
582 encoder->private = dsi_config;
583 dsi_config->encoder = encoder;
584 encoder->base.type = (pipe == 0) ? INTEL_OUTPUT_MIPI :
585 INTEL_OUTPUT_MIPI2;
586 drm_connector_register(connector);
587 return;
588
589 /*TODO: add code to destroy outputs on error*/
590 dsi_init_err1:
591 /*destroy sender*/
592 mdfld_dsi_pkg_sender_destroy(dsi_connector->pkg_sender);
593
594 drm_connector_cleanup(connector);
595
596 kfree(dsi_config->fixed_mode);
597 kfree(dsi_config);
598 dsi_init_err0:
599 kfree(dsi_connector);
600 }
601
