1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2019 Theobroma Systems Design und Consulting GmbH
4 *
5 * base on panel-kingdisplay-kd097d04.c
6 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
7 */
8
9 #include <linux/backlight.h>
10 #include <linux/delay.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/of_device.h>
15 #include <linux/regulator/consumer.h>
16
17 #include <video/mipi_display.h>
18
19 #include <drm/drm_crtc.h>
20 #include <drm/drm_device.h>
21 #include <drm/drm_mipi_dsi.h>
22 #include <drm/drm_modes.h>
23 #include <drm/drm_panel.h>
24
25 struct ltk500hd1829_cmd {
26 char cmd;
27 char data;
28 };
29
30 struct ltk500hd1829_desc {
31 const struct drm_display_mode *mode;
32 const struct ltk500hd1829_cmd *init;
33 unsigned int num_init;
34 };
35
36 struct ltk500hd1829 {
37 struct device *dev;
38 struct drm_panel panel;
39 struct gpio_desc *reset_gpio;
40 struct regulator *vcc;
41 struct regulator *iovcc;
42 const struct ltk500hd1829_desc *panel_desc;
43 };
44
45 static const struct ltk500hd1829_cmd ltk101b4029w_init[] = {
46 /* Page0 */
47 { 0xE0, 0x00 },
48 /* PASSWORD */
49 { 0xE1, 0x93 },
50 { 0xE2, 0x65 },
51 { 0xE3, 0xF8 },
52 { 0x80, 0x03 }, /* 0X03:4-LANE; 0X02:3-LANE; 0X01:2-LANE */
53 /* Page1 */
54 { 0xE0, 0x01 },
55 /* Set VCOM */
56 { 0x00, 0x00 },
57 { 0x01, 0x6F },
58 /* Set Gamma Power, VGMP,VGMN,VGSP,VGSN */
59 { 0x17, 0x00 },
60 { 0x18, 0xAF }, /* 4.3V */
61 { 0x19, 0x01 }, /* 0.3V */
62 { 0x1A, 0x00 },
63 { 0x1B, 0xAF }, /* 4.3V */
64 { 0x1C, 0x01 }, /* 0.3V */
65 /* Set Gate Power */
66 { 0x1F, 0x3E }, /* VGH_R = 15V */
67 { 0x20, 0x28 }, /* VGL_R = -12V */
68 { 0x21, 0x28 }, /* VGL_R2 = -12V */
69 { 0x22, 0x7E },
70 /* SETPANEL */
71 { 0x35, 0x26 },
72 { 0x37, 0x09 },
73 /* SET RGBCYC */
74 { 0x38, 0x04 },
75 { 0x39, 0x00 },
76 { 0x3A, 0x01 },
77 { 0x3C, 0x7C },
78 { 0x3D, 0xFF },
79 { 0x3E, 0xFF },
80 { 0x3F, 0x7F },
81 /* Set TCON */
82 { 0x40, 0x06 }, /* RSO = 800 RGB */
83 { 0x41, 0xA0 }, /* LN = 640->1280 line */
84 { 0x42, 0x81 },
85 { 0x43, 0x08 }, /* VFP = 8 */
86 { 0x44, 0x0B }, /* VBP = 12 */
87 { 0x45, 0x28 }, /* HBP = 40 */
88 /* power voltage */
89 { 0x55, 0x0F }, /* DCDCM = 0001, JD PWR_IC */
90 { 0x57, 0x69 },
91 { 0x59, 0x0A }, /* VCL = -2.9V */
92 { 0x5A, 0x28 }, /* VGH = 15V */
93 { 0x5B, 0x14 }, /* VGL = -11V */
94 /* Gamma */
95 { 0x5D, 0x7C },
96 { 0x5E, 0x65 },
97 { 0x5F, 0x55 },
98 { 0x60, 0x47 },
99 { 0x61, 0x43 },
100 { 0x62, 0x32 },
101 { 0x63, 0x34 },
102 { 0x64, 0x1C },
103 { 0x65, 0x33 },
104 { 0x66, 0x31 },
105 { 0x67, 0x30 },
106 { 0x68, 0x4E },
107 { 0x69, 0x3C },
108 { 0x6A, 0x44 },
109 { 0x6B, 0x35 },
110 { 0x6C, 0x31 },
111 { 0x6D, 0x23 },
112 { 0x6E, 0x11 },
113 { 0x6F, 0x00 },
114 { 0x70, 0x7C },
115 { 0x71, 0x65 },
116 { 0x72, 0x55 },
117 { 0x73, 0x47 },
118 { 0x74, 0x43 },
119 { 0x75, 0x32 },
120 { 0x76, 0x34 },
121 { 0x77, 0x1C },
122 { 0x78, 0x33 },
123 { 0x79, 0x31 },
124 { 0x7A, 0x30 },
125 { 0x7B, 0x4E },
126 { 0x7C, 0x3C },
127 { 0x7D, 0x44 },
128 { 0x7E, 0x35 },
129 { 0x7F, 0x31 },
130 { 0x80, 0x23 },
131 { 0x81, 0x11 },
132 { 0x82, 0x00 },
133 /* Page2, for GIP */
134 { 0xE0, 0x02 },
135 /* GIP_L Pin mapping */
136 { 0x00, 0x1E },
137 { 0x01, 0x1E },
138 { 0x02, 0x41 },
139 { 0x03, 0x41 },
140 { 0x04, 0x43 },
141 { 0x05, 0x43 },
142 { 0x06, 0x1F },
143 { 0x07, 0x1F },
144 { 0x08, 0x35 },
145 { 0x09, 0x1F },
146 { 0x0A, 0x15 },
147 { 0x0B, 0x15 },
148 { 0x0C, 0x1F },
149 { 0x0D, 0x47 },
150 { 0x0E, 0x47 },
151 { 0x0F, 0x45 },
152 { 0x10, 0x45 },
153 { 0x11, 0x4B },
154 { 0x12, 0x4B },
155 { 0x13, 0x49 },
156 { 0x14, 0x49 },
157 { 0x15, 0x1F },
158 /* GIP_R Pin mapping */
159 { 0x16, 0x1E },
160 { 0x17, 0x1E },
161 { 0x18, 0x40 },
162 { 0x19, 0x40 },
163 { 0x1A, 0x42 },
164 { 0x1B, 0x42 },
165 { 0x1C, 0x1F },
166 { 0x1D, 0x1F },
167 { 0x1E, 0x35 },
168 { 0x1F, 0x1F },
169 { 0x20, 0x15 },
170 { 0x21, 0x15 },
171 { 0x22, 0x1f },
172 { 0x23, 0x46 },
173 { 0x24, 0x46 },
174 { 0x25, 0x44 },
175 { 0x26, 0x44 },
176 { 0x27, 0x4A },
177 { 0x28, 0x4A },
178 { 0x29, 0x48 },
179 { 0x2A, 0x48 },
180 { 0x2B, 0x1F },
181 /* GIP Timing */
182 { 0x58, 0x40 },
183 { 0x5B, 0x30 },
184 { 0x5C, 0x03 },
185 { 0x5D, 0x30 },
186 { 0x5E, 0x01 },
187 { 0x5F, 0x02 },
188 { 0x63, 0x14 },
189 { 0x64, 0x6A },
190 { 0x67, 0x73 },
191 { 0x68, 0x05 },
192 { 0x69, 0x14 },
193 { 0x6A, 0x6A },
194 { 0x6B, 0x08 },
195 { 0x6C, 0x00 },
196 { 0x6D, 0x00 },
197 { 0x6E, 0x00 },
198 { 0x6F, 0x88 },
199 { 0x77, 0xDD },
200 { 0x79, 0x0E },
201 { 0x7A, 0x03 },
202 { 0x7D, 0x14 },
203 { 0x7E, 0x6A },
204 /* Page4 */
205 { 0xE0, 0x04 },
206 { 0x09, 0x11 },
207 { 0x0E, 0x48 },
208 { 0x2B, 0x2B },
209 { 0x2D, 0x03 },
210 { 0x2E, 0x44 },
211 /* Page0 */
212 { 0xE0, 0x00 },
213 { 0xE6, 0x02 },
214 { 0xE7, 0x0C },
215 };
216
217 static const struct drm_display_mode ltk101b4029w_mode = {
218 .hdisplay = 800,
219 .hsync_start = 800 + 18,
220 .hsync_end = 800 + 18 + 18,
221 .htotal = 800 + 18 + 18 + 18,
222 .vdisplay = 1280,
223 .vsync_start = 1280 + 24,
224 .vsync_end = 1280 + 24 + 4,
225 .vtotal = 1280 + 24 + 4 + 8,
226 .clock = 67330,
227 .width_mm = 136,
228 .height_mm = 218,
229 };
230
231 static const struct ltk500hd1829_desc ltk101b4029w_data = {
232 .mode = <k101b4029w_mode,
233 .init = ltk101b4029w_init,
234 .num_init = ARRAY_SIZE(ltk101b4029w_init),
235 };
236
237 /*
238 * There is no description in the Reference Manual about these commands.
239 * We received them from the vendor, so just use them as is.
240 */
241 static const struct ltk500hd1829_cmd ltk500hd1829_init[] = {
242 { 0xE0, 0x00 },
243 { 0xE1, 0x93 },
244 { 0xE2, 0x65 },
245 { 0xE3, 0xF8 },
246 { 0x80, 0x03 },
247 { 0xE0, 0x04 },
248 { 0x2D, 0x03 },
249 { 0xE0, 0x01 },
250 { 0x00, 0x00 },
251 { 0x01, 0xB6 },
252 { 0x03, 0x00 },
253 { 0x04, 0xC5 },
254 { 0x17, 0x00 },
255 { 0x18, 0xBF },
256 { 0x19, 0x01 },
257 { 0x1A, 0x00 },
258 { 0x1B, 0xBF },
259 { 0x1C, 0x01 },
260 { 0x1F, 0x7C },
261 { 0x20, 0x26 },
262 { 0x21, 0x26 },
263 { 0x22, 0x4E },
264 { 0x37, 0x09 },
265 { 0x38, 0x04 },
266 { 0x39, 0x08 },
267 { 0x3A, 0x1F },
268 { 0x3B, 0x1F },
269 { 0x3C, 0x78 },
270 { 0x3D, 0xFF },
271 { 0x3E, 0xFF },
272 { 0x3F, 0x00 },
273 { 0x40, 0x04 },
274 { 0x41, 0xA0 },
275 { 0x43, 0x0F },
276 { 0x44, 0x0A },
277 { 0x45, 0x24 },
278 { 0x55, 0x01 },
279 { 0x56, 0x01 },
280 { 0x57, 0xA5 },
281 { 0x58, 0x0A },
282 { 0x59, 0x4A },
283 { 0x5A, 0x38 },
284 { 0x5B, 0x10 },
285 { 0x5C, 0x19 },
286 { 0x5D, 0x7C },
287 { 0x5E, 0x64 },
288 { 0x5F, 0x54 },
289 { 0x60, 0x48 },
290 { 0x61, 0x44 },
291 { 0x62, 0x35 },
292 { 0x63, 0x3A },
293 { 0x64, 0x24 },
294 { 0x65, 0x3B },
295 { 0x66, 0x39 },
296 { 0x67, 0x37 },
297 { 0x68, 0x56 },
298 { 0x69, 0x41 },
299 { 0x6A, 0x47 },
300 { 0x6B, 0x2F },
301 { 0x6C, 0x23 },
302 { 0x6D, 0x13 },
303 { 0x6E, 0x02 },
304 { 0x6F, 0x08 },
305 { 0x70, 0x7C },
306 { 0x71, 0x64 },
307 { 0x72, 0x54 },
308 { 0x73, 0x48 },
309 { 0x74, 0x44 },
310 { 0x75, 0x35 },
311 { 0x76, 0x3A },
312 { 0x77, 0x22 },
313 { 0x78, 0x3B },
314 { 0x79, 0x39 },
315 { 0x7A, 0x38 },
316 { 0x7B, 0x52 },
317 { 0x7C, 0x41 },
318 { 0x7D, 0x47 },
319 { 0x7E, 0x2F },
320 { 0x7F, 0x23 },
321 { 0x80, 0x13 },
322 { 0x81, 0x02 },
323 { 0x82, 0x08 },
324 { 0xE0, 0x02 },
325 { 0x00, 0x57 },
326 { 0x01, 0x77 },
327 { 0x02, 0x44 },
328 { 0x03, 0x46 },
329 { 0x04, 0x48 },
330 { 0x05, 0x4A },
331 { 0x06, 0x4C },
332 { 0x07, 0x4E },
333 { 0x08, 0x50 },
334 { 0x09, 0x55 },
335 { 0x0A, 0x52 },
336 { 0x0B, 0x55 },
337 { 0x0C, 0x55 },
338 { 0x0D, 0x55 },
339 { 0x0E, 0x55 },
340 { 0x0F, 0x55 },
341 { 0x10, 0x55 },
342 { 0x11, 0x55 },
343 { 0x12, 0x55 },
344 { 0x13, 0x40 },
345 { 0x14, 0x55 },
346 { 0x15, 0x55 },
347 { 0x16, 0x57 },
348 { 0x17, 0x77 },
349 { 0x18, 0x45 },
350 { 0x19, 0x47 },
351 { 0x1A, 0x49 },
352 { 0x1B, 0x4B },
353 { 0x1C, 0x4D },
354 { 0x1D, 0x4F },
355 { 0x1E, 0x51 },
356 { 0x1F, 0x55 },
357 { 0x20, 0x53 },
358 { 0x21, 0x55 },
359 { 0x22, 0x55 },
360 { 0x23, 0x55 },
361 { 0x24, 0x55 },
362 { 0x25, 0x55 },
363 { 0x26, 0x55 },
364 { 0x27, 0x55 },
365 { 0x28, 0x55 },
366 { 0x29, 0x41 },
367 { 0x2A, 0x55 },
368 { 0x2B, 0x55 },
369 { 0x2C, 0x57 },
370 { 0x2D, 0x77 },
371 { 0x2E, 0x4F },
372 { 0x2F, 0x4D },
373 { 0x30, 0x4B },
374 { 0x31, 0x49 },
375 { 0x32, 0x47 },
376 { 0x33, 0x45 },
377 { 0x34, 0x41 },
378 { 0x35, 0x55 },
379 { 0x36, 0x53 },
380 { 0x37, 0x55 },
381 { 0x38, 0x55 },
382 { 0x39, 0x55 },
383 { 0x3A, 0x55 },
384 { 0x3B, 0x55 },
385 { 0x3C, 0x55 },
386 { 0x3D, 0x55 },
387 { 0x3E, 0x55 },
388 { 0x3F, 0x51 },
389 { 0x40, 0x55 },
390 { 0x41, 0x55 },
391 { 0x42, 0x57 },
392 { 0x43, 0x77 },
393 { 0x44, 0x4E },
394 { 0x45, 0x4C },
395 { 0x46, 0x4A },
396 { 0x47, 0x48 },
397 { 0x48, 0x46 },
398 { 0x49, 0x44 },
399 { 0x4A, 0x40 },
400 { 0x4B, 0x55 },
401 { 0x4C, 0x52 },
402 { 0x4D, 0x55 },
403 { 0x4E, 0x55 },
404 { 0x4F, 0x55 },
405 { 0x50, 0x55 },
406 { 0x51, 0x55 },
407 { 0x52, 0x55 },
408 { 0x53, 0x55 },
409 { 0x54, 0x55 },
410 { 0x55, 0x50 },
411 { 0x56, 0x55 },
412 { 0x57, 0x55 },
413 { 0x58, 0x40 },
414 { 0x59, 0x00 },
415 { 0x5A, 0x00 },
416 { 0x5B, 0x10 },
417 { 0x5C, 0x09 },
418 { 0x5D, 0x30 },
419 { 0x5E, 0x01 },
420 { 0x5F, 0x02 },
421 { 0x60, 0x30 },
422 { 0x61, 0x03 },
423 { 0x62, 0x04 },
424 { 0x63, 0x06 },
425 { 0x64, 0x6A },
426 { 0x65, 0x75 },
427 { 0x66, 0x0F },
428 { 0x67, 0xB3 },
429 { 0x68, 0x0B },
430 { 0x69, 0x06 },
431 { 0x6A, 0x6A },
432 { 0x6B, 0x10 },
433 { 0x6C, 0x00 },
434 { 0x6D, 0x04 },
435 { 0x6E, 0x04 },
436 { 0x6F, 0x88 },
437 { 0x70, 0x00 },
438 { 0x71, 0x00 },
439 { 0x72, 0x06 },
440 { 0x73, 0x7B },
441 { 0x74, 0x00 },
442 { 0x75, 0xBC },
443 { 0x76, 0x00 },
444 { 0x77, 0x05 },
445 { 0x78, 0x2E },
446 { 0x79, 0x00 },
447 { 0x7A, 0x00 },
448 { 0x7B, 0x00 },
449 { 0x7C, 0x00 },
450 { 0x7D, 0x03 },
451 { 0x7E, 0x7B },
452 { 0xE0, 0x04 },
453 { 0x09, 0x10 },
454 { 0x2B, 0x2B },
455 { 0x2E, 0x44 },
456 { 0xE0, 0x00 },
457 { 0xE6, 0x02 },
458 { 0xE7, 0x02 },
459 { 0x35, 0x00 },
460 };
461
462 static const struct drm_display_mode ltk500hd1829_mode = {
463 .hdisplay = 720,
464 .hsync_start = 720 + 50,
465 .hsync_end = 720 + 50 + 50,
466 .htotal = 720 + 50 + 50 + 50,
467 .vdisplay = 1280,
468 .vsync_start = 1280 + 30,
469 .vsync_end = 1280 + 30 + 4,
470 .vtotal = 1280 + 30 + 4 + 12,
471 .clock = 69217,
472 .width_mm = 62,
473 .height_mm = 110,
474 };
475
476 static const struct ltk500hd1829_desc ltk500hd1829_data = {
477 .mode = <k500hd1829_mode,
478 .init = ltk500hd1829_init,
479 .num_init = ARRAY_SIZE(ltk500hd1829_init),
480 };
481
482 static inline
panel_to_ltk500hd1829(struct drm_panel * panel)483 struct ltk500hd1829 *panel_to_ltk500hd1829(struct drm_panel *panel)
484 {
485 return container_of(panel, struct ltk500hd1829, panel);
486 }
487
ltk500hd1829_unprepare(struct drm_panel * panel)488 static int ltk500hd1829_unprepare(struct drm_panel *panel)
489 {
490 struct ltk500hd1829 *ctx = panel_to_ltk500hd1829(panel);
491 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
492 int ret;
493
494 ret = mipi_dsi_dcs_set_display_off(dsi);
495 if (ret < 0)
496 dev_err(panel->dev, "failed to set display off: %d\n", ret);
497
498 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
499 if (ret < 0) {
500 dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);
501 }
502
503 /* 120ms to enter sleep mode */
504 msleep(120);
505
506 regulator_disable(ctx->iovcc);
507 regulator_disable(ctx->vcc);
508
509 return 0;
510 }
511
ltk500hd1829_prepare(struct drm_panel * panel)512 static int ltk500hd1829_prepare(struct drm_panel *panel)
513 {
514 struct ltk500hd1829 *ctx = panel_to_ltk500hd1829(panel);
515 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
516 unsigned int i;
517 int ret;
518
519 ret = regulator_enable(ctx->vcc);
520 if (ret < 0) {
521 dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);
522 return ret;
523 }
524 ret = regulator_enable(ctx->iovcc);
525 if (ret < 0) {
526 dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);
527 goto disable_vcc;
528 }
529
530 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
531 /* tRW: 10us */
532 usleep_range(10, 20);
533 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
534
535 /* tRT: >= 5ms */
536 usleep_range(5000, 6000);
537
538 for (i = 0; i < ctx->panel_desc->num_init; i++) {
539 ret = mipi_dsi_generic_write(dsi, &ctx->panel_desc->init[i],
540 sizeof(struct ltk500hd1829_cmd));
541 if (ret < 0) {
542 dev_err(panel->dev, "failed to write init cmds: %d\n", ret);
543 goto disable_iovcc;
544 }
545 }
546
547 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
548 if (ret < 0) {
549 dev_err(panel->dev, "failed to exit sleep mode: %d\n", ret);
550 goto disable_iovcc;
551 }
552
553 /* 120ms to exit sleep mode */
554 msleep(120);
555
556 ret = mipi_dsi_dcs_set_display_on(dsi);
557 if (ret < 0) {
558 dev_err(panel->dev, "failed to set display on: %d\n", ret);
559 goto disable_iovcc;
560 }
561
562 return 0;
563
564 disable_iovcc:
565 regulator_disable(ctx->iovcc);
566 disable_vcc:
567 regulator_disable(ctx->vcc);
568 return ret;
569 }
570
ltk500hd1829_get_modes(struct drm_panel * panel,struct drm_connector * connector)571 static int ltk500hd1829_get_modes(struct drm_panel *panel,
572 struct drm_connector *connector)
573 {
574 struct ltk500hd1829 *ctx = panel_to_ltk500hd1829(panel);
575 struct drm_display_mode *mode;
576
577 mode = drm_mode_duplicate(connector->dev, ctx->panel_desc->mode);
578 if (!mode) {
579 dev_err(ctx->dev, "failed to add mode %ux%u@%u\n",
580 ctx->panel_desc->mode->hdisplay, ctx->panel_desc->mode->vdisplay,
581 drm_mode_vrefresh(ctx->panel_desc->mode));
582 return -ENOMEM;
583 }
584
585 drm_mode_set_name(mode);
586
587 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
588 connector->display_info.width_mm = mode->width_mm;
589 connector->display_info.height_mm = mode->height_mm;
590 drm_mode_probed_add(connector, mode);
591
592 return 1;
593 }
594
595 static const struct drm_panel_funcs ltk500hd1829_funcs = {
596 .unprepare = ltk500hd1829_unprepare,
597 .prepare = ltk500hd1829_prepare,
598 .get_modes = ltk500hd1829_get_modes,
599 };
600
ltk500hd1829_probe(struct mipi_dsi_device * dsi)601 static int ltk500hd1829_probe(struct mipi_dsi_device *dsi)
602 {
603 struct ltk500hd1829 *ctx;
604 struct device *dev = &dsi->dev;
605 int ret;
606
607 ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
608 if (!ctx)
609 return -ENOMEM;
610
611 ctx->panel_desc = of_device_get_match_data(dev);
612 if (!ctx->panel_desc)
613 return -EINVAL;
614
615 ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
616 if (IS_ERR(ctx->reset_gpio)) {
617 dev_err(dev, "cannot get reset gpio\n");
618 return PTR_ERR(ctx->reset_gpio);
619 }
620
621 ctx->vcc = devm_regulator_get(dev, "vcc");
622 if (IS_ERR(ctx->vcc)) {
623 ret = PTR_ERR(ctx->vcc);
624 if (ret != -EPROBE_DEFER)
625 dev_err(dev, "Failed to request vcc regulator: %d\n", ret);
626 return ret;
627 }
628
629 ctx->iovcc = devm_regulator_get(dev, "iovcc");
630 if (IS_ERR(ctx->iovcc)) {
631 ret = PTR_ERR(ctx->iovcc);
632 if (ret != -EPROBE_DEFER)
633 dev_err(dev, "Failed to request iovcc regulator: %d\n", ret);
634 return ret;
635 }
636
637 mipi_dsi_set_drvdata(dsi, ctx);
638
639 ctx->dev = dev;
640
641 dsi->lanes = 4;
642 dsi->format = MIPI_DSI_FMT_RGB888;
643 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
644 MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
645
646 drm_panel_init(&ctx->panel, &dsi->dev, <k500hd1829_funcs,
647 DRM_MODE_CONNECTOR_DSI);
648
649 ret = drm_panel_of_backlight(&ctx->panel);
650 if (ret)
651 return ret;
652
653 drm_panel_add(&ctx->panel);
654
655 ret = mipi_dsi_attach(dsi);
656 if (ret < 0) {
657 dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
658 drm_panel_remove(&ctx->panel);
659 return ret;
660 }
661
662 return 0;
663 }
664
ltk500hd1829_remove(struct mipi_dsi_device * dsi)665 static void ltk500hd1829_remove(struct mipi_dsi_device *dsi)
666 {
667 struct ltk500hd1829 *ctx = mipi_dsi_get_drvdata(dsi);
668 int ret;
669
670 ret = mipi_dsi_detach(dsi);
671 if (ret < 0)
672 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
673
674 drm_panel_remove(&ctx->panel);
675 }
676
677 static const struct of_device_id ltk500hd1829_of_match[] = {
678 {
679 .compatible = "leadtek,ltk101b4029w",
680 .data = <k101b4029w_data,
681 },
682 {
683 .compatible = "leadtek,ltk500hd1829",
684 .data = <k500hd1829_data,
685 },
686 { /* sentinel */ }
687 };
688 MODULE_DEVICE_TABLE(of, ltk500hd1829_of_match);
689
690 static struct mipi_dsi_driver ltk500hd1829_driver = {
691 .driver = {
692 .name = "panel-leadtek-ltk500hd1829",
693 .of_match_table = ltk500hd1829_of_match,
694 },
695 .probe = ltk500hd1829_probe,
696 .remove = ltk500hd1829_remove,
697 };
698 module_mipi_dsi_driver(ltk500hd1829_driver);
699
700 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
701 MODULE_DESCRIPTION("Leadtek LTK500HD1829 panel driver");
702 MODULE_LICENSE("GPL v2");
703