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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Panels based on the Ilitek ILI9882T display controller.
4 */
5#include <linux/delay.h>
6#include <linux/gpio/consumer.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/regulator/consumer.h>
10
11#include <drm/drm_connector.h>
12#include <drm/drm_crtc.h>
13#include <drm/drm_mipi_dsi.h>
14#include <drm/drm_panel.h>
15
16#include <video/mipi_display.h>
17
18/*
19 * Use this descriptor struct to describe different panels using the
20 * Ilitek ILI9882T display controller.
21 */
22struct panel_desc {
23 const struct drm_display_mode *modes;
24 unsigned int bpc;
25
26 /**
27 * @width_mm: width of the panel's active display area
28 * @height_mm: height of the panel's active display area
29 */
30 struct {
31 unsigned int width_mm;
32 unsigned int height_mm;
33 } size;
34
35 unsigned long mode_flags;
36 enum mipi_dsi_pixel_format format;
37 const struct panel_init_cmd *init_cmds;
38 unsigned int lanes;
39};
40
41struct ili9882t {
42 struct drm_panel base;
43 struct mipi_dsi_device *dsi;
44
45 const struct panel_desc *desc;
46
47 enum drm_panel_orientation orientation;
48 struct regulator *pp3300;
49 struct regulator *pp1800;
50 struct regulator *avee;
51 struct regulator *avdd;
52 struct gpio_desc *enable_gpio;
53};
54
55enum dsi_cmd_type {
56 INIT_DCS_CMD,
57 DELAY_CMD,
58};
59
60struct panel_init_cmd {
61 enum dsi_cmd_type type;
62 size_t len;
63 const char *data;
64};
65
66#define _INIT_DCS_CMD(...) { \
67 .type = INIT_DCS_CMD, \
68 .len = sizeof((char[]){__VA_ARGS__}), \
69 .data = (char[]){__VA_ARGS__} }
70
71#define _INIT_DELAY_CMD(...) { \
72 .type = DELAY_CMD,\
73 .len = sizeof((char[]){__VA_ARGS__}), \
74 .data = (char[]){__VA_ARGS__} }
75
76/* ILI9882-specific commands, add new commands as you decode them */
77#define ILI9882T_DCS_SWITCH_PAGE 0xFF
78
79#define _INIT_SWITCH_PAGE_CMD(page) \
80 _INIT_DCS_CMD(ILI9882T_DCS_SWITCH_PAGE, 0x98, 0x82, (page))
81
82static const struct panel_init_cmd starry_ili9882t_init_cmd[] = {
83 _INIT_DELAY_CMD(5),
84 _INIT_SWITCH_PAGE_CMD(0x01),
85 _INIT_DCS_CMD(0x00, 0x42),
86 _INIT_DCS_CMD(0x01, 0x11),
87 _INIT_DCS_CMD(0x02, 0x00),
88 _INIT_DCS_CMD(0x03, 0x00),
89
90 _INIT_DCS_CMD(0x04, 0x01),
91 _INIT_DCS_CMD(0x05, 0x11),
92 _INIT_DCS_CMD(0x06, 0x00),
93 _INIT_DCS_CMD(0x07, 0x00),
94
95 _INIT_DCS_CMD(0x08, 0x80),
96 _INIT_DCS_CMD(0x09, 0x81),
97 _INIT_DCS_CMD(0x0A, 0x71),
98 _INIT_DCS_CMD(0x0B, 0x00),
99
100 _INIT_DCS_CMD(0x0C, 0x00),
101 _INIT_DCS_CMD(0x0E, 0x1A),
102
103 _INIT_DCS_CMD(0x24, 0x00),
104 _INIT_DCS_CMD(0x25, 0x00),
105 _INIT_DCS_CMD(0x26, 0x00),
106 _INIT_DCS_CMD(0x27, 0x00),
107
108 _INIT_DCS_CMD(0x2C, 0xD4),
109 _INIT_DCS_CMD(0xB9, 0x40),
110
111 _INIT_DCS_CMD(0xB0, 0x11),
112
113 _INIT_DCS_CMD(0xE6, 0x32),
114 _INIT_DCS_CMD(0xD1, 0x30),
115
116 _INIT_DCS_CMD(0xD6, 0x55),
117
118 _INIT_DCS_CMD(0xD0, 0x01),
119 _INIT_DCS_CMD(0xE3, 0x93),
120 _INIT_DCS_CMD(0xE4, 0x00),
121 _INIT_DCS_CMD(0xE5, 0x80),
122
123 _INIT_DCS_CMD(0x31, 0x07),
124 _INIT_DCS_CMD(0x32, 0x07),
125 _INIT_DCS_CMD(0x33, 0x07),
126 _INIT_DCS_CMD(0x34, 0x07),
127 _INIT_DCS_CMD(0x35, 0x07),
128 _INIT_DCS_CMD(0x36, 0x01),
129 _INIT_DCS_CMD(0x37, 0x00),
130 _INIT_DCS_CMD(0x38, 0x28),
131 _INIT_DCS_CMD(0x39, 0x29),
132 _INIT_DCS_CMD(0x3A, 0x11),
133 _INIT_DCS_CMD(0x3B, 0x13),
134 _INIT_DCS_CMD(0x3C, 0x15),
135 _INIT_DCS_CMD(0x3D, 0x17),
136 _INIT_DCS_CMD(0x3E, 0x09),
137 _INIT_DCS_CMD(0x3F, 0x0D),
138 _INIT_DCS_CMD(0x40, 0x02),
139 _INIT_DCS_CMD(0x41, 0x02),
140 _INIT_DCS_CMD(0x42, 0x02),
141 _INIT_DCS_CMD(0x43, 0x02),
142 _INIT_DCS_CMD(0x44, 0x02),
143 _INIT_DCS_CMD(0x45, 0x02),
144 _INIT_DCS_CMD(0x46, 0x02),
145
146 _INIT_DCS_CMD(0x47, 0x07),
147 _INIT_DCS_CMD(0x48, 0x07),
148 _INIT_DCS_CMD(0x49, 0x07),
149 _INIT_DCS_CMD(0x4A, 0x07),
150 _INIT_DCS_CMD(0x4B, 0x07),
151 _INIT_DCS_CMD(0x4C, 0x01),
152 _INIT_DCS_CMD(0x4D, 0x00),
153 _INIT_DCS_CMD(0x4E, 0x28),
154 _INIT_DCS_CMD(0x4F, 0x29),
155 _INIT_DCS_CMD(0x50, 0x10),
156 _INIT_DCS_CMD(0x51, 0x12),
157 _INIT_DCS_CMD(0x52, 0x14),
158 _INIT_DCS_CMD(0x53, 0x16),
159 _INIT_DCS_CMD(0x54, 0x08),
160 _INIT_DCS_CMD(0x55, 0x0C),
161 _INIT_DCS_CMD(0x56, 0x02),
162 _INIT_DCS_CMD(0x57, 0x02),
163 _INIT_DCS_CMD(0x58, 0x02),
164 _INIT_DCS_CMD(0x59, 0x02),
165 _INIT_DCS_CMD(0x5A, 0x02),
166 _INIT_DCS_CMD(0x5B, 0x02),
167 _INIT_DCS_CMD(0x5C, 0x02),
168
169 _INIT_DCS_CMD(0x61, 0x07),
170 _INIT_DCS_CMD(0x62, 0x07),
171 _INIT_DCS_CMD(0x63, 0x07),
172 _INIT_DCS_CMD(0x64, 0x07),
173 _INIT_DCS_CMD(0x65, 0x07),
174 _INIT_DCS_CMD(0x66, 0x01),
175 _INIT_DCS_CMD(0x67, 0x00),
176 _INIT_DCS_CMD(0x68, 0x28),
177 _INIT_DCS_CMD(0x69, 0x29),
178 _INIT_DCS_CMD(0x6A, 0x16),
179 _INIT_DCS_CMD(0x6B, 0x14),
180 _INIT_DCS_CMD(0x6C, 0x12),
181 _INIT_DCS_CMD(0x6D, 0x10),
182 _INIT_DCS_CMD(0x6E, 0x0C),
183 _INIT_DCS_CMD(0x6F, 0x08),
184 _INIT_DCS_CMD(0x70, 0x02),
185 _INIT_DCS_CMD(0x71, 0x02),
186 _INIT_DCS_CMD(0x72, 0x02),
187 _INIT_DCS_CMD(0x73, 0x02),
188 _INIT_DCS_CMD(0x74, 0x02),
189 _INIT_DCS_CMD(0x75, 0x02),
190 _INIT_DCS_CMD(0x76, 0x02),
191
192 _INIT_DCS_CMD(0x77, 0x07),
193 _INIT_DCS_CMD(0x78, 0x07),
194 _INIT_DCS_CMD(0x79, 0x07),
195 _INIT_DCS_CMD(0x7A, 0x07),
196 _INIT_DCS_CMD(0x7B, 0x07),
197 _INIT_DCS_CMD(0x7C, 0x01),
198 _INIT_DCS_CMD(0x7D, 0x00),
199 _INIT_DCS_CMD(0x7E, 0x28),
200 _INIT_DCS_CMD(0x7F, 0x29),
201 _INIT_DCS_CMD(0x80, 0x17),
202 _INIT_DCS_CMD(0x81, 0x15),
203 _INIT_DCS_CMD(0x82, 0x13),
204 _INIT_DCS_CMD(0x83, 0x11),
205 _INIT_DCS_CMD(0x84, 0x0D),
206 _INIT_DCS_CMD(0x85, 0x09),
207 _INIT_DCS_CMD(0x86, 0x02),
208 _INIT_DCS_CMD(0x87, 0x07),
209 _INIT_DCS_CMD(0x88, 0x07),
210 _INIT_DCS_CMD(0x89, 0x07),
211 _INIT_DCS_CMD(0x8A, 0x07),
212 _INIT_DCS_CMD(0x8B, 0x07),
213 _INIT_DCS_CMD(0x8C, 0x07),
214
215 _INIT_SWITCH_PAGE_CMD(0x02),
216 _INIT_DCS_CMD(0x29, 0x3A),
217 _INIT_DCS_CMD(0x2A, 0x3B),
218
219 _INIT_DCS_CMD(0x06, 0x01),
220 _INIT_DCS_CMD(0x07, 0x01),
221 _INIT_DCS_CMD(0x08, 0x0C),
222 _INIT_DCS_CMD(0x09, 0x44),
223
224 _INIT_DCS_CMD(0x3C, 0x0A),
225 _INIT_DCS_CMD(0x39, 0x11),
226 _INIT_DCS_CMD(0x3D, 0x00),
227 _INIT_DCS_CMD(0x3A, 0x0C),
228 _INIT_DCS_CMD(0x3B, 0x44),
229
230 _INIT_DCS_CMD(0x53, 0x1F),
231 _INIT_DCS_CMD(0x5E, 0x40),
232 _INIT_DCS_CMD(0x84, 0x00),
233
234 _INIT_SWITCH_PAGE_CMD(0x03),
235 _INIT_DCS_CMD(0x20, 0x01),
236 _INIT_DCS_CMD(0x21, 0x3C),
237 _INIT_DCS_CMD(0x22, 0xFA),
238
239 _INIT_SWITCH_PAGE_CMD(0x0A),
240 _INIT_DCS_CMD(0xE0, 0x01),
241 _INIT_DCS_CMD(0xE2, 0x01),
242 _INIT_DCS_CMD(0xE5, 0x91),
243 _INIT_DCS_CMD(0xE6, 0x3C),
244 _INIT_DCS_CMD(0xE7, 0x00),
245 _INIT_DCS_CMD(0xE8, 0xFA),
246
247 _INIT_SWITCH_PAGE_CMD(0x12),
248 _INIT_DCS_CMD(0x87, 0x2C),
249
250 _INIT_SWITCH_PAGE_CMD(0x05),
251 _INIT_DCS_CMD(0x73, 0xE5),
252 _INIT_DCS_CMD(0x7F, 0x6B),
253 _INIT_DCS_CMD(0x6D, 0xA4),
254 _INIT_DCS_CMD(0x79, 0x54),
255 _INIT_DCS_CMD(0x69, 0x97),
256 _INIT_DCS_CMD(0x6A, 0x97),
257 _INIT_DCS_CMD(0xA5, 0x3F),
258 _INIT_DCS_CMD(0x61, 0xDA),
259 _INIT_DCS_CMD(0xA7, 0xF1),
260 _INIT_DCS_CMD(0x5F, 0x01),
261 _INIT_DCS_CMD(0x62, 0x3F),
262 _INIT_DCS_CMD(0x1D, 0x90),
263 _INIT_DCS_CMD(0x86, 0x87),
264
265 _INIT_SWITCH_PAGE_CMD(0x06),
266 _INIT_DCS_CMD(0xC0, 0x80),
267 _INIT_DCS_CMD(0xC1, 0x07),
268 _INIT_DCS_CMD(0xCA, 0x58),
269 _INIT_DCS_CMD(0xCB, 0x02),
270 _INIT_DCS_CMD(0xCE, 0x58),
271 _INIT_DCS_CMD(0xCF, 0x02),
272 _INIT_DCS_CMD(0x67, 0x60),
273 _INIT_DCS_CMD(0x10, 0x00),
274 _INIT_DCS_CMD(0x92, 0x22),
275 _INIT_DCS_CMD(0xD3, 0x08),
276 _INIT_DCS_CMD(0xD6, 0x55),
277 _INIT_DCS_CMD(0xDC, 0x38),
278
279 _INIT_SWITCH_PAGE_CMD(0x08),
280 _INIT_DCS_CMD(0xE0, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
281 _INIT_DCS_CMD(0xE1, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8),
282
283 _INIT_SWITCH_PAGE_CMD(0x04),
284 _INIT_DCS_CMD(0xBA, 0x81),
285
286 _INIT_SWITCH_PAGE_CMD(0x0C),
287 _INIT_DCS_CMD(0x00, 0x02),
288 _INIT_DCS_CMD(0x01, 0x00),
289 _INIT_DCS_CMD(0x02, 0x03),
290 _INIT_DCS_CMD(0x03, 0x01),
291 _INIT_DCS_CMD(0x04, 0x03),
292 _INIT_DCS_CMD(0x05, 0x02),
293 _INIT_DCS_CMD(0x06, 0x04),
294 _INIT_DCS_CMD(0x07, 0x03),
295 _INIT_DCS_CMD(0x08, 0x03),
296 _INIT_DCS_CMD(0x09, 0x04),
297 _INIT_DCS_CMD(0x0A, 0x04),
298 _INIT_DCS_CMD(0x0B, 0x05),
299 _INIT_DCS_CMD(0x0C, 0x04),
300 _INIT_DCS_CMD(0x0D, 0x06),
301 _INIT_DCS_CMD(0x0E, 0x05),
302 _INIT_DCS_CMD(0x0F, 0x07),
303 _INIT_DCS_CMD(0x10, 0x04),
304 _INIT_DCS_CMD(0x11, 0x08),
305 _INIT_DCS_CMD(0x12, 0x05),
306 _INIT_DCS_CMD(0x13, 0x09),
307 _INIT_DCS_CMD(0x14, 0x05),
308 _INIT_DCS_CMD(0x15, 0x0A),
309 _INIT_DCS_CMD(0x16, 0x06),
310 _INIT_DCS_CMD(0x17, 0x0B),
311 _INIT_DCS_CMD(0x18, 0x05),
312 _INIT_DCS_CMD(0x19, 0x0C),
313 _INIT_DCS_CMD(0x1A, 0x06),
314 _INIT_DCS_CMD(0x1B, 0x0D),
315 _INIT_DCS_CMD(0x1C, 0x06),
316 _INIT_DCS_CMD(0x1D, 0x0E),
317 _INIT_DCS_CMD(0x1E, 0x07),
318 _INIT_DCS_CMD(0x1F, 0x0F),
319 _INIT_DCS_CMD(0x20, 0x06),
320 _INIT_DCS_CMD(0x21, 0x10),
321 _INIT_DCS_CMD(0x22, 0x07),
322 _INIT_DCS_CMD(0x23, 0x11),
323 _INIT_DCS_CMD(0x24, 0x07),
324 _INIT_DCS_CMD(0x25, 0x12),
325 _INIT_DCS_CMD(0x26, 0x08),
326 _INIT_DCS_CMD(0x27, 0x13),
327 _INIT_DCS_CMD(0x28, 0x07),
328 _INIT_DCS_CMD(0x29, 0x14),
329 _INIT_DCS_CMD(0x2A, 0x08),
330 _INIT_DCS_CMD(0x2B, 0x15),
331 _INIT_DCS_CMD(0x2C, 0x08),
332 _INIT_DCS_CMD(0x2D, 0x16),
333 _INIT_DCS_CMD(0x2E, 0x09),
334 _INIT_DCS_CMD(0x2F, 0x17),
335 _INIT_DCS_CMD(0x30, 0x08),
336 _INIT_DCS_CMD(0x31, 0x18),
337 _INIT_DCS_CMD(0x32, 0x09),
338 _INIT_DCS_CMD(0x33, 0x19),
339 _INIT_DCS_CMD(0x34, 0x09),
340 _INIT_DCS_CMD(0x35, 0x1A),
341 _INIT_DCS_CMD(0x36, 0x0A),
342 _INIT_DCS_CMD(0x37, 0x1B),
343 _INIT_DCS_CMD(0x38, 0x0A),
344 _INIT_DCS_CMD(0x39, 0x1C),
345 _INIT_DCS_CMD(0x3A, 0x0A),
346 _INIT_DCS_CMD(0x3B, 0x1D),
347 _INIT_DCS_CMD(0x3C, 0x0A),
348 _INIT_DCS_CMD(0x3D, 0x1E),
349 _INIT_DCS_CMD(0x3E, 0x0A),
350 _INIT_DCS_CMD(0x3F, 0x1F),
351
352 _INIT_SWITCH_PAGE_CMD(0x04),
353 _INIT_DCS_CMD(0xBA, 0x01),
354
355 _INIT_SWITCH_PAGE_CMD(0x0E),
356 _INIT_DCS_CMD(0x02, 0x0C),
357 _INIT_DCS_CMD(0x20, 0x10),
358 _INIT_DCS_CMD(0x25, 0x16),
359 _INIT_DCS_CMD(0x26, 0xE0),
360 _INIT_DCS_CMD(0x27, 0x00),
361 _INIT_DCS_CMD(0x29, 0x71),
362 _INIT_DCS_CMD(0x2A, 0x46),
363 _INIT_DCS_CMD(0x2B, 0x1F),
364 _INIT_DCS_CMD(0x2D, 0xC7),
365 _INIT_DCS_CMD(0x31, 0x02),
366 _INIT_DCS_CMD(0x32, 0xDF),
367 _INIT_DCS_CMD(0x33, 0x5A),
368 _INIT_DCS_CMD(0x34, 0xC0),
369 _INIT_DCS_CMD(0x35, 0x5A),
370 _INIT_DCS_CMD(0x36, 0xC0),
371 _INIT_DCS_CMD(0x38, 0x65),
372 _INIT_DCS_CMD(0x80, 0x3E),
373 _INIT_DCS_CMD(0x81, 0xA0),
374 _INIT_DCS_CMD(0xB0, 0x01),
375 _INIT_DCS_CMD(0xB1, 0xCC),
376 _INIT_DCS_CMD(0xC0, 0x12),
377 _INIT_DCS_CMD(0xC2, 0xCC),
378 _INIT_DCS_CMD(0xC3, 0xCC),
379 _INIT_DCS_CMD(0xC4, 0xCC),
380 _INIT_DCS_CMD(0xC5, 0xCC),
381 _INIT_DCS_CMD(0xC6, 0xCC),
382 _INIT_DCS_CMD(0xC7, 0xCC),
383 _INIT_DCS_CMD(0xC8, 0xCC),
384 _INIT_DCS_CMD(0xC9, 0xCC),
385 _INIT_DCS_CMD(0x30, 0x00),
386 _INIT_DCS_CMD(0x00, 0x81),
387 _INIT_DCS_CMD(0x08, 0x02),
388 _INIT_DCS_CMD(0x09, 0x00),
389 _INIT_DCS_CMD(0x07, 0x21),
390 _INIT_DCS_CMD(0x04, 0x10),
391
392 _INIT_SWITCH_PAGE_CMD(0x1E),
393 _INIT_DCS_CMD(0x60, 0x00),
394 _INIT_DCS_CMD(0x64, 0x00),
395 _INIT_DCS_CMD(0x6D, 0x00),
396
397 _INIT_SWITCH_PAGE_CMD(0x0B),
398 _INIT_DCS_CMD(0xA6, 0x44),
399 _INIT_DCS_CMD(0xA7, 0xB6),
400 _INIT_DCS_CMD(0xA8, 0x03),
401 _INIT_DCS_CMD(0xA9, 0x03),
402 _INIT_DCS_CMD(0xAA, 0x51),
403 _INIT_DCS_CMD(0xAB, 0x51),
404 _INIT_DCS_CMD(0xAC, 0x04),
405 _INIT_DCS_CMD(0xBD, 0x92),
406 _INIT_DCS_CMD(0xBE, 0xA1),
407
408 _INIT_SWITCH_PAGE_CMD(0x05),
409 _INIT_DCS_CMD(0x86, 0x87),
410
411 _INIT_SWITCH_PAGE_CMD(0x06),
412 _INIT_DCS_CMD(0x92, 0x22),
413
414 _INIT_SWITCH_PAGE_CMD(0x00),
415 _INIT_DCS_CMD(MIPI_DCS_EXIT_SLEEP_MODE),
416 _INIT_DELAY_CMD(120),
417 _INIT_DCS_CMD(MIPI_DCS_SET_DISPLAY_ON),
418 _INIT_DELAY_CMD(20),
419 {},
420};
421
422static inline struct ili9882t *to_ili9882t(struct drm_panel *panel)
423{
424 return container_of(panel, struct ili9882t, base);
425}
426
427static int ili9882t_init_dcs_cmd(struct ili9882t *ili)
428{
429 struct mipi_dsi_device *dsi = ili->dsi;
430 struct drm_panel *panel = &ili->base;
431 int i, err = 0;
432
433 if (ili->desc->init_cmds) {
434 const struct panel_init_cmd *init_cmds = ili->desc->init_cmds;
435
436 for (i = 0; init_cmds[i].len != 0; i++) {
437 const struct panel_init_cmd *cmd = &init_cmds[i];
438
439 switch (cmd->type) {
440 case DELAY_CMD:
441 msleep(cmd->data[0]);
442 err = 0;
443 break;
444
445 case INIT_DCS_CMD:
446 err = mipi_dsi_dcs_write(dsi, cmd->data[0],
447 cmd->len <= 1 ? NULL :
448 &cmd->data[1],
449 cmd->len - 1);
450 break;
451
452 default:
453 err = -EINVAL;
454 }
455
456 if (err < 0) {
457 dev_err(panel->dev,
458 "failed to write command %u\n", i);
459 return err;
460 }
461 }
462 }
463 return 0;
464}
465
466static int ili9882t_switch_page(struct mipi_dsi_device *dsi, u8 page)
467{
468 int ret;
469 const struct panel_init_cmd cmd = _INIT_SWITCH_PAGE_CMD(page);
470
471 ret = mipi_dsi_dcs_write(dsi, cmd.data[0],
472 cmd.len <= 1 ? NULL :
473 &cmd.data[1],
474 cmd.len - 1);
475 if (ret) {
476 dev_err(&dsi->dev,
477 "error switching panel controller page (%d)\n", ret);
478 return ret;
479 }
480
481 return 0;
482}
483
484static int ili9882t_enter_sleep_mode(struct ili9882t *ili)
485{
486 struct mipi_dsi_device *dsi = ili->dsi;
487 int ret;
488
489 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
490
491 ret = mipi_dsi_dcs_set_display_off(dsi);
492 if (ret < 0)
493 return ret;
494
495 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
496 if (ret < 0)
497 return ret;
498
499 return 0;
500}
501
502static int ili9882t_disable(struct drm_panel *panel)
503{
504 struct ili9882t *ili = to_ili9882t(panel);
505 struct mipi_dsi_device *dsi = ili->dsi;
506 int ret;
507
508 ili9882t_switch_page(dsi, 0x00);
509 ret = ili9882t_enter_sleep_mode(ili);
510 if (ret < 0) {
511 dev_err(panel->dev, "failed to set panel off: %d\n", ret);
512 return ret;
513 }
514
515 msleep(150);
516
517 return 0;
518}
519
520static int ili9882t_unprepare(struct drm_panel *panel)
521{
522 struct ili9882t *ili = to_ili9882t(panel);
523
524 gpiod_set_value(ili->enable_gpio, 0);
525 usleep_range(1000, 2000);
526 regulator_disable(ili->avee);
527 regulator_disable(ili->avdd);
528 usleep_range(5000, 7000);
529 regulator_disable(ili->pp1800);
530 regulator_disable(ili->pp3300);
531
532 return 0;
533}
534
535static int ili9882t_prepare(struct drm_panel *panel)
536{
537 struct ili9882t *ili = to_ili9882t(panel);
538 int ret;
539
540 gpiod_set_value(ili->enable_gpio, 0);
541 usleep_range(1000, 1500);
542
543 ret = regulator_enable(ili->pp3300);
544 if (ret < 0)
545 return ret;
546
547 ret = regulator_enable(ili->pp1800);
548 if (ret < 0)
549 return ret;
550
551 usleep_range(3000, 5000);
552
553 ret = regulator_enable(ili->avdd);
554 if (ret < 0)
555 goto poweroff1v8;
556 ret = regulator_enable(ili->avee);
557 if (ret < 0)
558 goto poweroffavdd;
559
560 usleep_range(10000, 11000);
561
562 // MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high
563 mipi_dsi_dcs_nop(ili->dsi);
564 usleep_range(1000, 2000);
565
566 gpiod_set_value(ili->enable_gpio, 1);
567 usleep_range(1000, 2000);
568 gpiod_set_value(ili->enable_gpio, 0);
569 msleep(50);
570 gpiod_set_value(ili->enable_gpio, 1);
571 usleep_range(6000, 10000);
572
573 ret = ili9882t_init_dcs_cmd(ili);
574 if (ret < 0) {
575 dev_err(panel->dev, "failed to init panel: %d\n", ret);
576 goto poweroff;
577 }
578
579 return 0;
580
581poweroff:
582 regulator_disable(ili->avee);
583poweroffavdd:
584 regulator_disable(ili->avdd);
585poweroff1v8:
586 usleep_range(5000, 7000);
587 regulator_disable(ili->pp1800);
588 gpiod_set_value(ili->enable_gpio, 0);
589
590 return ret;
591}
592
593static int ili9882t_enable(struct drm_panel *panel)
594{
595 msleep(130);
596 return 0;
597}
598
599static const struct drm_display_mode starry_ili9882t_default_mode = {
600 .clock = 165280,
601 .hdisplay = 1200,
602 .hsync_start = 1200 + 72,
603 .hsync_end = 1200 + 72 + 30,
604 .htotal = 1200 + 72 + 30 + 72,
605 .vdisplay = 1920,
606 .vsync_start = 1920 + 68,
607 .vsync_end = 1920 + 68 + 2,
608 .vtotal = 1920 + 68 + 2 + 10,
609 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
610};
611
612static const struct panel_desc starry_ili9882t_desc = {
613 .modes = &starry_ili9882t_default_mode,
614 .bpc = 8,
615 .size = {
616 .width_mm = 141,
617 .height_mm = 226,
618 },
619 .lanes = 4,
620 .format = MIPI_DSI_FMT_RGB888,
621 .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
622 MIPI_DSI_MODE_LPM,
623 .init_cmds = starry_ili9882t_init_cmd,
624};
625
626static int ili9882t_get_modes(struct drm_panel *panel,
627 struct drm_connector *connector)
628{
629 struct ili9882t *ili = to_ili9882t(panel);
630 const struct drm_display_mode *m = ili->desc->modes;
631 struct drm_display_mode *mode;
632
633 mode = drm_mode_duplicate(connector->dev, m);
634 if (!mode) {
635 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
636 m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
637 return -ENOMEM;
638 }
639
640 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
641 drm_mode_set_name(mode);
642 drm_mode_probed_add(connector, mode);
643
644 connector->display_info.width_mm = ili->desc->size.width_mm;
645 connector->display_info.height_mm = ili->desc->size.height_mm;
646 connector->display_info.bpc = ili->desc->bpc;
647
648 return 1;
649}
650
651static enum drm_panel_orientation ili9882t_get_orientation(struct drm_panel *panel)
652{
653 struct ili9882t *ili = to_ili9882t(panel);
654
655 return ili->orientation;
656}
657
658static const struct drm_panel_funcs ili9882t_funcs = {
659 .disable = ili9882t_disable,
660 .unprepare = ili9882t_unprepare,
661 .prepare = ili9882t_prepare,
662 .enable = ili9882t_enable,
663 .get_modes = ili9882t_get_modes,
664 .get_orientation = ili9882t_get_orientation,
665};
666
667static int ili9882t_add(struct ili9882t *ili)
668{
669 struct device *dev = &ili->dsi->dev;
670 int err;
671
672 ili->avdd = devm_regulator_get(dev, "avdd");
673 if (IS_ERR(ili->avdd))
674 return PTR_ERR(ili->avdd);
675
676 ili->avee = devm_regulator_get(dev, "avee");
677 if (IS_ERR(ili->avee))
678 return PTR_ERR(ili->avee);
679
680 ili->pp3300 = devm_regulator_get(dev, "pp3300");
681 if (IS_ERR(ili->pp3300))
682 return PTR_ERR(ili->pp3300);
683
684 ili->pp1800 = devm_regulator_get(dev, "pp1800");
685 if (IS_ERR(ili->pp1800))
686 return PTR_ERR(ili->pp1800);
687
688 ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
689 if (IS_ERR(ili->enable_gpio)) {
690 dev_err(dev, "cannot get reset-gpios %ld\n",
691 PTR_ERR(ili->enable_gpio));
692 return PTR_ERR(ili->enable_gpio);
693 }
694
695 gpiod_set_value(ili->enable_gpio, 0);
696
697 drm_panel_init(&ili->base, dev, &ili9882t_funcs,
698 DRM_MODE_CONNECTOR_DSI);
699 err = of_drm_get_panel_orientation(dev->of_node, &ili->orientation);
700 if (err < 0) {
701 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
702 return err;
703 }
704
705 err = drm_panel_of_backlight(&ili->base);
706 if (err)
707 return err;
708
709 ili->base.funcs = &ili9882t_funcs;
710 ili->base.dev = &ili->dsi->dev;
711
712 drm_panel_add(&ili->base);
713
714 return 0;
715}
716
717static int ili9882t_probe(struct mipi_dsi_device *dsi)
718{
719 struct ili9882t *ili;
720 int ret;
721 const struct panel_desc *desc;
722
723 ili = devm_kzalloc(&dsi->dev, sizeof(*ili), GFP_KERNEL);
724 if (!ili)
725 return -ENOMEM;
726
727 desc = of_device_get_match_data(&dsi->dev);
728 dsi->lanes = desc->lanes;
729 dsi->format = desc->format;
730 dsi->mode_flags = desc->mode_flags;
731 ili->desc = desc;
732 ili->dsi = dsi;
733 ret = ili9882t_add(ili);
734 if (ret < 0)
735 return ret;
736
737 mipi_dsi_set_drvdata(dsi, ili);
738
739 ret = mipi_dsi_attach(dsi);
740 if (ret)
741 drm_panel_remove(&ili->base);
742
743 return ret;
744}
745
746static void ili9882t_remove(struct mipi_dsi_device *dsi)
747{
748 struct ili9882t *ili = mipi_dsi_get_drvdata(dsi);
749 int ret;
750
751 ret = mipi_dsi_detach(dsi);
752 if (ret < 0)
753 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
754
755 if (ili->base.dev)
756 drm_panel_remove(&ili->base);
757}
758
759static const struct of_device_id ili9882t_of_match[] = {
760 { .compatible = "starry,ili9882t",
761 .data = &starry_ili9882t_desc
762 },
763 { /* sentinel */ }
764};
765MODULE_DEVICE_TABLE(of, ili9882t_of_match);
766
767static struct mipi_dsi_driver ili9882t_driver = {
768 .driver = {
769 .name = "panel-ili9882t",
770 .of_match_table = ili9882t_of_match,
771 },
772 .probe = ili9882t_probe,
773 .remove = ili9882t_remove,
774};
775module_mipi_dsi_driver(ili9882t_driver);
776
777MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
778MODULE_DESCRIPTION("Ilitek ILI9882T-based panels driver");
779MODULE_LICENSE("GPL");