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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 2019 Radxa Limited
4 * Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
5 *
6 * Author:
7 * - Jagan Teki <jagan@amarulasolutions.com>
8 * - Stephen Chen <stephen@radxa.com>
9 */
10
11#include <drm/drm_mipi_dsi.h>
12#include <drm/drm_modes.h>
13#include <drm/drm_panel.h>
14#include <drm/drm_print.h>
15
16#include <linux/gpio/consumer.h>
17#include <linux/delay.h>
18#include <linux/module.h>
19#include <linux/of_device.h>
20#include <linux/regulator/consumer.h>
21
22#define JD9365DA_INIT_CMD_LEN 2
23
24struct jadard_init_cmd {
25 u8 data[JD9365DA_INIT_CMD_LEN];
26};
27
28struct jadard_panel_desc {
29 const struct drm_display_mode mode;
30 unsigned int lanes;
31 enum mipi_dsi_pixel_format format;
32 const struct jadard_init_cmd *init_cmds;
33 u32 num_init_cmds;
34};
35
36struct jadard {
37 struct drm_panel panel;
38 struct mipi_dsi_device *dsi;
39 const struct jadard_panel_desc *desc;
40
41 struct regulator *vdd;
42 struct regulator *vccio;
43 struct gpio_desc *reset;
44};
45
46static inline struct jadard *panel_to_jadard(struct drm_panel *panel)
47{
48 return container_of(panel, struct jadard, panel);
49}
50
51static int jadard_enable(struct drm_panel *panel)
52{
53 struct device *dev = panel->dev;
54 struct jadard *jadard = panel_to_jadard(panel);
55 const struct jadard_panel_desc *desc = jadard->desc;
56 struct mipi_dsi_device *dsi = jadard->dsi;
57 unsigned int i;
58 int err;
59
60 msleep(10);
61
62 for (i = 0; i < desc->num_init_cmds; i++) {
63 const struct jadard_init_cmd *cmd = &desc->init_cmds[i];
64
65 err = mipi_dsi_dcs_write_buffer(dsi, cmd->data, JD9365DA_INIT_CMD_LEN);
66 if (err < 0)
67 return err;
68 }
69
70 msleep(120);
71
72 err = mipi_dsi_dcs_exit_sleep_mode(dsi);
73 if (err < 0)
74 DRM_DEV_ERROR(dev, "failed to exit sleep mode ret = %d\n", err);
75
76 err = mipi_dsi_dcs_set_display_on(dsi);
77 if (err < 0)
78 DRM_DEV_ERROR(dev, "failed to set display on ret = %d\n", err);
79
80 return 0;
81}
82
83static int jadard_disable(struct drm_panel *panel)
84{
85 struct device *dev = panel->dev;
86 struct jadard *jadard = panel_to_jadard(panel);
87 int ret;
88
89 ret = mipi_dsi_dcs_set_display_off(jadard->dsi);
90 if (ret < 0)
91 DRM_DEV_ERROR(dev, "failed to set display off: %d\n", ret);
92
93 ret = mipi_dsi_dcs_enter_sleep_mode(jadard->dsi);
94 if (ret < 0)
95 DRM_DEV_ERROR(dev, "failed to enter sleep mode: %d\n", ret);
96
97 return 0;
98}
99
100static int jadard_prepare(struct drm_panel *panel)
101{
102 struct jadard *jadard = panel_to_jadard(panel);
103 int ret;
104
105 ret = regulator_enable(jadard->vccio);
106 if (ret)
107 return ret;
108
109 ret = regulator_enable(jadard->vdd);
110 if (ret)
111 return ret;
112
113 gpiod_set_value(jadard->reset, 1);
114 msleep(5);
115
116 gpiod_set_value(jadard->reset, 0);
117 msleep(10);
118
119 gpiod_set_value(jadard->reset, 1);
120 msleep(120);
121
122 return 0;
123}
124
125static int jadard_unprepare(struct drm_panel *panel)
126{
127 struct jadard *jadard = panel_to_jadard(panel);
128
129 gpiod_set_value(jadard->reset, 1);
130 msleep(120);
131
132 regulator_disable(jadard->vdd);
133 regulator_disable(jadard->vccio);
134
135 return 0;
136}
137
138static int jadard_get_modes(struct drm_panel *panel,
139 struct drm_connector *connector)
140{
141 struct jadard *jadard = panel_to_jadard(panel);
142 const struct drm_display_mode *desc_mode = &jadard->desc->mode;
143 struct drm_display_mode *mode;
144
145 mode = drm_mode_duplicate(connector->dev, desc_mode);
146 if (!mode) {
147 DRM_DEV_ERROR(&jadard->dsi->dev, "failed to add mode %ux%ux@%u\n",
148 desc_mode->hdisplay, desc_mode->vdisplay,
149 drm_mode_vrefresh(desc_mode));
150 return -ENOMEM;
151 }
152
153 drm_mode_set_name(mode);
154 drm_mode_probed_add(connector, mode);
155
156 connector->display_info.width_mm = mode->width_mm;
157 connector->display_info.height_mm = mode->height_mm;
158
159 return 1;
160}
161
162static const struct drm_panel_funcs jadard_funcs = {
163 .disable = jadard_disable,
164 .unprepare = jadard_unprepare,
165 .prepare = jadard_prepare,
166 .enable = jadard_enable,
167 .get_modes = jadard_get_modes,
168};
169
170static const struct jadard_init_cmd cz101b4001_init_cmds[] = {
171 { .data = { 0xE0, 0x00 } },
172 { .data = { 0xE1, 0x93 } },
173 { .data = { 0xE2, 0x65 } },
174 { .data = { 0xE3, 0xF8 } },
175 { .data = { 0x80, 0x03 } },
176 { .data = { 0xE0, 0x01 } },
177 { .data = { 0x00, 0x00 } },
178 { .data = { 0x01, 0x3B } },
179 { .data = { 0x0C, 0x74 } },
180 { .data = { 0x17, 0x00 } },
181 { .data = { 0x18, 0xAF } },
182 { .data = { 0x19, 0x00 } },
183 { .data = { 0x1A, 0x00 } },
184 { .data = { 0x1B, 0xAF } },
185 { .data = { 0x1C, 0x00 } },
186 { .data = { 0x35, 0x26 } },
187 { .data = { 0x37, 0x09 } },
188 { .data = { 0x38, 0x04 } },
189 { .data = { 0x39, 0x00 } },
190 { .data = { 0x3A, 0x01 } },
191 { .data = { 0x3C, 0x78 } },
192 { .data = { 0x3D, 0xFF } },
193 { .data = { 0x3E, 0xFF } },
194 { .data = { 0x3F, 0x7F } },
195 { .data = { 0x40, 0x06 } },
196 { .data = { 0x41, 0xA0 } },
197 { .data = { 0x42, 0x81 } },
198 { .data = { 0x43, 0x14 } },
199 { .data = { 0x44, 0x23 } },
200 { .data = { 0x45, 0x28 } },
201 { .data = { 0x55, 0x02 } },
202 { .data = { 0x57, 0x69 } },
203 { .data = { 0x59, 0x0A } },
204 { .data = { 0x5A, 0x2A } },
205 { .data = { 0x5B, 0x17 } },
206 { .data = { 0x5D, 0x7F } },
207 { .data = { 0x5E, 0x6B } },
208 { .data = { 0x5F, 0x5C } },
209 { .data = { 0x60, 0x4F } },
210 { .data = { 0x61, 0x4D } },
211 { .data = { 0x62, 0x3F } },
212 { .data = { 0x63, 0x42 } },
213 { .data = { 0x64, 0x2B } },
214 { .data = { 0x65, 0x44 } },
215 { .data = { 0x66, 0x43 } },
216 { .data = { 0x67, 0x43 } },
217 { .data = { 0x68, 0x63 } },
218 { .data = { 0x69, 0x52 } },
219 { .data = { 0x6A, 0x5A } },
220 { .data = { 0x6B, 0x4F } },
221 { .data = { 0x6C, 0x4E } },
222 { .data = { 0x6D, 0x20 } },
223 { .data = { 0x6E, 0x0F } },
224 { .data = { 0x6F, 0x00 } },
225 { .data = { 0x70, 0x7F } },
226 { .data = { 0x71, 0x6B } },
227 { .data = { 0x72, 0x5C } },
228 { .data = { 0x73, 0x4F } },
229 { .data = { 0x74, 0x4D } },
230 { .data = { 0x75, 0x3F } },
231 { .data = { 0x76, 0x42 } },
232 { .data = { 0x77, 0x2B } },
233 { .data = { 0x78, 0x44 } },
234 { .data = { 0x79, 0x43 } },
235 { .data = { 0x7A, 0x43 } },
236 { .data = { 0x7B, 0x63 } },
237 { .data = { 0x7C, 0x52 } },
238 { .data = { 0x7D, 0x5A } },
239 { .data = { 0x7E, 0x4F } },
240 { .data = { 0x7F, 0x4E } },
241 { .data = { 0x80, 0x20 } },
242 { .data = { 0x81, 0x0F } },
243 { .data = { 0x82, 0x00 } },
244 { .data = { 0xE0, 0x02 } },
245 { .data = { 0x00, 0x02 } },
246 { .data = { 0x01, 0x02 } },
247 { .data = { 0x02, 0x00 } },
248 { .data = { 0x03, 0x00 } },
249 { .data = { 0x04, 0x1E } },
250 { .data = { 0x05, 0x1E } },
251 { .data = { 0x06, 0x1F } },
252 { .data = { 0x07, 0x1F } },
253 { .data = { 0x08, 0x1F } },
254 { .data = { 0x09, 0x17 } },
255 { .data = { 0x0A, 0x17 } },
256 { .data = { 0x0B, 0x37 } },
257 { .data = { 0x0C, 0x37 } },
258 { .data = { 0x0D, 0x47 } },
259 { .data = { 0x0E, 0x47 } },
260 { .data = { 0x0F, 0x45 } },
261 { .data = { 0x10, 0x45 } },
262 { .data = { 0x11, 0x4B } },
263 { .data = { 0x12, 0x4B } },
264 { .data = { 0x13, 0x49 } },
265 { .data = { 0x14, 0x49 } },
266 { .data = { 0x15, 0x1F } },
267 { .data = { 0x16, 0x01 } },
268 { .data = { 0x17, 0x01 } },
269 { .data = { 0x18, 0x00 } },
270 { .data = { 0x19, 0x00 } },
271 { .data = { 0x1A, 0x1E } },
272 { .data = { 0x1B, 0x1E } },
273 { .data = { 0x1C, 0x1F } },
274 { .data = { 0x1D, 0x1F } },
275 { .data = { 0x1E, 0x1F } },
276 { .data = { 0x1F, 0x17 } },
277 { .data = { 0x20, 0x17 } },
278 { .data = { 0x21, 0x37 } },
279 { .data = { 0x22, 0x37 } },
280 { .data = { 0x23, 0x46 } },
281 { .data = { 0x24, 0x46 } },
282 { .data = { 0x25, 0x44 } },
283 { .data = { 0x26, 0x44 } },
284 { .data = { 0x27, 0x4A } },
285 { .data = { 0x28, 0x4A } },
286 { .data = { 0x29, 0x48 } },
287 { .data = { 0x2A, 0x48 } },
288 { .data = { 0x2B, 0x1F } },
289 { .data = { 0x2C, 0x01 } },
290 { .data = { 0x2D, 0x01 } },
291 { .data = { 0x2E, 0x00 } },
292 { .data = { 0x2F, 0x00 } },
293 { .data = { 0x30, 0x1F } },
294 { .data = { 0x31, 0x1F } },
295 { .data = { 0x32, 0x1E } },
296 { .data = { 0x33, 0x1E } },
297 { .data = { 0x34, 0x1F } },
298 { .data = { 0x35, 0x17 } },
299 { .data = { 0x36, 0x17 } },
300 { .data = { 0x37, 0x37 } },
301 { .data = { 0x38, 0x37 } },
302 { .data = { 0x39, 0x08 } },
303 { .data = { 0x3A, 0x08 } },
304 { .data = { 0x3B, 0x0A } },
305 { .data = { 0x3C, 0x0A } },
306 { .data = { 0x3D, 0x04 } },
307 { .data = { 0x3E, 0x04 } },
308 { .data = { 0x3F, 0x06 } },
309 { .data = { 0x40, 0x06 } },
310 { .data = { 0x41, 0x1F } },
311 { .data = { 0x42, 0x02 } },
312 { .data = { 0x43, 0x02 } },
313 { .data = { 0x44, 0x00 } },
314 { .data = { 0x45, 0x00 } },
315 { .data = { 0x46, 0x1F } },
316 { .data = { 0x47, 0x1F } },
317 { .data = { 0x48, 0x1E } },
318 { .data = { 0x49, 0x1E } },
319 { .data = { 0x4A, 0x1F } },
320 { .data = { 0x4B, 0x17 } },
321 { .data = { 0x4C, 0x17 } },
322 { .data = { 0x4D, 0x37 } },
323 { .data = { 0x4E, 0x37 } },
324 { .data = { 0x4F, 0x09 } },
325 { .data = { 0x50, 0x09 } },
326 { .data = { 0x51, 0x0B } },
327 { .data = { 0x52, 0x0B } },
328 { .data = { 0x53, 0x05 } },
329 { .data = { 0x54, 0x05 } },
330 { .data = { 0x55, 0x07 } },
331 { .data = { 0x56, 0x07 } },
332 { .data = { 0x57, 0x1F } },
333 { .data = { 0x58, 0x40 } },
334 { .data = { 0x5B, 0x30 } },
335 { .data = { 0x5C, 0x16 } },
336 { .data = { 0x5D, 0x34 } },
337 { .data = { 0x5E, 0x05 } },
338 { .data = { 0x5F, 0x02 } },
339 { .data = { 0x63, 0x00 } },
340 { .data = { 0x64, 0x6A } },
341 { .data = { 0x67, 0x73 } },
342 { .data = { 0x68, 0x1D } },
343 { .data = { 0x69, 0x08 } },
344 { .data = { 0x6A, 0x6A } },
345 { .data = { 0x6B, 0x08 } },
346 { .data = { 0x6C, 0x00 } },
347 { .data = { 0x6D, 0x00 } },
348 { .data = { 0x6E, 0x00 } },
349 { .data = { 0x6F, 0x88 } },
350 { .data = { 0x75, 0xFF } },
351 { .data = { 0x77, 0xDD } },
352 { .data = { 0x78, 0x3F } },
353 { .data = { 0x79, 0x15 } },
354 { .data = { 0x7A, 0x17 } },
355 { .data = { 0x7D, 0x14 } },
356 { .data = { 0x7E, 0x82 } },
357 { .data = { 0xE0, 0x04 } },
358 { .data = { 0x00, 0x0E } },
359 { .data = { 0x02, 0xB3 } },
360 { .data = { 0x09, 0x61 } },
361 { .data = { 0x0E, 0x48 } },
362 { .data = { 0xE0, 0x00 } },
363 { .data = { 0xE6, 0x02 } },
364 { .data = { 0xE7, 0x0C } },
365};
366
367static const struct jadard_panel_desc cz101b4001_desc = {
368 .mode = {
369 .clock = 70000,
370
371 .hdisplay = 800,
372 .hsync_start = 800 + 40,
373 .hsync_end = 800 + 40 + 18,
374 .htotal = 800 + 40 + 18 + 20,
375
376 .vdisplay = 1280,
377 .vsync_start = 1280 + 20,
378 .vsync_end = 1280 + 20 + 4,
379 .vtotal = 1280 + 20 + 4 + 20,
380
381 .width_mm = 62,
382 .height_mm = 110,
383 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
384 },
385 .lanes = 4,
386 .format = MIPI_DSI_FMT_RGB888,
387 .init_cmds = cz101b4001_init_cmds,
388 .num_init_cmds = ARRAY_SIZE(cz101b4001_init_cmds),
389};
390
391static int jadard_dsi_probe(struct mipi_dsi_device *dsi)
392{
393 struct device *dev = &dsi->dev;
394 const struct jadard_panel_desc *desc;
395 struct jadard *jadard;
396 int ret;
397
398 jadard = devm_kzalloc(&dsi->dev, sizeof(*jadard), GFP_KERNEL);
399 if (!jadard)
400 return -ENOMEM;
401
402 desc = of_device_get_match_data(dev);
403 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
404 MIPI_DSI_MODE_NO_EOT_PACKET;
405 dsi->format = desc->format;
406 dsi->lanes = desc->lanes;
407
408 jadard->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
409 if (IS_ERR(jadard->reset)) {
410 DRM_DEV_ERROR(&dsi->dev, "failed to get our reset GPIO\n");
411 return PTR_ERR(jadard->reset);
412 }
413
414 jadard->vdd = devm_regulator_get(dev, "vdd");
415 if (IS_ERR(jadard->vdd)) {
416 DRM_DEV_ERROR(&dsi->dev, "failed to get vdd regulator\n");
417 return PTR_ERR(jadard->vdd);
418 }
419
420 jadard->vccio = devm_regulator_get(dev, "vccio");
421 if (IS_ERR(jadard->vccio)) {
422 DRM_DEV_ERROR(&dsi->dev, "failed to get vccio regulator\n");
423 return PTR_ERR(jadard->vccio);
424 }
425
426 drm_panel_init(&jadard->panel, dev, &jadard_funcs,
427 DRM_MODE_CONNECTOR_DSI);
428
429 ret = drm_panel_of_backlight(&jadard->panel);
430 if (ret)
431 return ret;
432
433 drm_panel_add(&jadard->panel);
434
435 mipi_dsi_set_drvdata(dsi, jadard);
436 jadard->dsi = dsi;
437 jadard->desc = desc;
438
439 ret = mipi_dsi_attach(dsi);
440 if (ret < 0)
441 drm_panel_remove(&jadard->panel);
442
443 return ret;
444}
445
446static void jadard_dsi_remove(struct mipi_dsi_device *dsi)
447{
448 struct jadard *jadard = mipi_dsi_get_drvdata(dsi);
449
450 mipi_dsi_detach(dsi);
451 drm_panel_remove(&jadard->panel);
452}
453
454static const struct of_device_id jadard_of_match[] = {
455 { .compatible = "chongzhou,cz101b4001", .data = &cz101b4001_desc },
456 { /* sentinel */ }
457};
458MODULE_DEVICE_TABLE(of, jadard_of_match);
459
460static struct mipi_dsi_driver jadard_driver = {
461 .probe = jadard_dsi_probe,
462 .remove = jadard_dsi_remove,
463 .driver = {
464 .name = "jadard-jd9365da",
465 .of_match_table = jadard_of_match,
466 },
467};
468module_mipi_dsi_driver(jadard_driver);
469
470MODULE_AUTHOR("Jagan Teki <jagan@edgeble.ai>");
471MODULE_AUTHOR("Stephen Chen <stephen@radxa.com>");
472MODULE_DESCRIPTION("Jadard JD9365DA-H3 WXGA DSI panel");
473MODULE_LICENSE("GPL");