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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
4 */
5
6#include <linux/delay.h>
7#include <linux/gpio/consumer.h>
8#include <linux/module.h>
9#include <linux/of.h>
10#include <linux/regulator/consumer.h>
11
12#include <video/mipi_display.h>
13
14#include <drm/drm_crtc.h>
15#include <drm/drm_device.h>
16#include <drm/drm_mipi_dsi.h>
17#include <drm/drm_modes.h>
18#include <drm/drm_panel.h>
19
20struct innolux_panel;
21
22struct panel_desc {
23 const struct drm_display_mode *mode;
24 unsigned int bpc;
25 struct {
26 unsigned int width;
27 unsigned int height;
28 } size;
29
30 unsigned long flags;
31 enum mipi_dsi_pixel_format format;
32 int (*init)(struct innolux_panel *innolux);
33 unsigned int lanes;
34 const char * const *supply_names;
35 unsigned int num_supplies;
36 unsigned int sleep_mode_delay;
37 unsigned int power_down_delay;
38};
39
40struct innolux_panel {
41 struct drm_panel base;
42 struct mipi_dsi_device *link;
43 const struct panel_desc *desc;
44
45 struct regulator_bulk_data *supplies;
46 struct gpio_desc *enable_gpio;
47};
48
49static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
50{
51 return container_of(panel, struct innolux_panel, base);
52}
53
54static int innolux_panel_unprepare(struct drm_panel *panel)
55{
56 struct innolux_panel *innolux = to_innolux_panel(panel);
57 int err;
58
59 err = mipi_dsi_dcs_set_display_off(innolux->link);
60 if (err < 0)
61 dev_err(panel->dev, "failed to set display off: %d\n", err);
62
63 err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
64 if (err < 0) {
65 dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
66 return err;
67 }
68
69 if (innolux->desc->sleep_mode_delay)
70 msleep(innolux->desc->sleep_mode_delay);
71
72 gpiod_set_value_cansleep(innolux->enable_gpio, 0);
73
74 if (innolux->desc->power_down_delay)
75 msleep(innolux->desc->power_down_delay);
76
77 err = regulator_bulk_disable(innolux->desc->num_supplies,
78 innolux->supplies);
79 if (err < 0)
80 return err;
81
82 return 0;
83}
84
85static int innolux_panel_prepare(struct drm_panel *panel)
86{
87 struct innolux_panel *innolux = to_innolux_panel(panel);
88 int err;
89
90 gpiod_set_value_cansleep(innolux->enable_gpio, 0);
91
92 err = regulator_bulk_enable(innolux->desc->num_supplies,
93 innolux->supplies);
94 if (err < 0)
95 return err;
96
97 /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
98 usleep_range(20000, 21000);
99
100 gpiod_set_value_cansleep(innolux->enable_gpio, 1);
101
102 /* p079zca: t4, p097pfg: t5 */
103 usleep_range(20000, 21000);
104
105 if (innolux->desc->init) {
106 err = innolux->desc->init(innolux);
107 if (err < 0)
108 goto poweroff;
109 }
110
111 err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
112 if (err < 0) {
113 dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
114 goto poweroff;
115 }
116
117 /* T6: 120ms - 1000ms*/
118 msleep(120);
119
120 err = mipi_dsi_dcs_set_display_on(innolux->link);
121 if (err < 0) {
122 dev_err(panel->dev, "failed to set display on: %d\n", err);
123 goto poweroff;
124 }
125
126 /* T7: 5ms */
127 usleep_range(5000, 6000);
128
129 return 0;
130
131poweroff:
132 gpiod_set_value_cansleep(innolux->enable_gpio, 0);
133 regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
134
135 return err;
136}
137
138static const char * const innolux_p079zca_supply_names[] = {
139 "power",
140};
141
142static const struct drm_display_mode innolux_p079zca_mode = {
143 .clock = 56900,
144 .hdisplay = 768,
145 .hsync_start = 768 + 40,
146 .hsync_end = 768 + 40 + 40,
147 .htotal = 768 + 40 + 40 + 40,
148 .vdisplay = 1024,
149 .vsync_start = 1024 + 20,
150 .vsync_end = 1024 + 20 + 4,
151 .vtotal = 1024 + 20 + 4 + 20,
152};
153
154static const struct panel_desc innolux_p079zca_panel_desc = {
155 .mode = &innolux_p079zca_mode,
156 .bpc = 8,
157 .size = {
158 .width = 120,
159 .height = 160,
160 },
161 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
162 MIPI_DSI_MODE_LPM,
163 .format = MIPI_DSI_FMT_RGB888,
164 .lanes = 4,
165 .supply_names = innolux_p079zca_supply_names,
166 .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
167 .power_down_delay = 80, /* T8: 80ms - 1000ms */
168};
169
170static const char * const innolux_p097pfg_supply_names[] = {
171 "avdd",
172 "avee",
173};
174
175static const struct drm_display_mode innolux_p097pfg_mode = {
176 .clock = 229000,
177 .hdisplay = 1536,
178 .hsync_start = 1536 + 100,
179 .hsync_end = 1536 + 100 + 24,
180 .htotal = 1536 + 100 + 24 + 100,
181 .vdisplay = 2048,
182 .vsync_start = 2048 + 100,
183 .vsync_end = 2048 + 100 + 2,
184 .vtotal = 2048 + 100 + 2 + 18,
185};
186
187static void innolux_panel_write_multi(struct mipi_dsi_multi_context *ctx,
188 const void *payload, size_t size)
189{
190 mipi_dsi_generic_write_multi(ctx, payload, size);
191
192 /*
193 * Included by random guessing, because without this
194 * (or at least, some delay), the panel sometimes
195 * didn't appear to pick up the command sequence.
196 */
197 mipi_dsi_dcs_nop_multi(ctx);
198}
199
200#define innolux_panel_init_cmd_multi(ctx, seq...) \
201 do { \
202 static const u8 d[] = { seq }; \
203 innolux_panel_write_multi(ctx, d, ARRAY_SIZE(d)); \
204 } while (0)
205
206#define innolux_panel_switch_page(ctx, page) \
207 innolux_panel_init_cmd_multi(ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, (page))
208
209/*
210 * Display manufacturer failed to provide init sequencing according to
211 * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
212 * so the init sequence stems from a register dump of a working panel.
213 */
214static int innolux_p097pfg_init(struct innolux_panel *innolux)
215{
216 struct mipi_dsi_multi_context ctx = { .dsi = innolux->link };
217
218 innolux_panel_switch_page(&ctx, 0x00);
219 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0xe8, 0x11);
220 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x25, 0x02);
221 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x08, 0x00);
222 innolux_panel_init_cmd_multi(&ctx, 0xbc, 0x0f, 0x00);
223 innolux_panel_init_cmd_multi(&ctx, 0xb8, 0x03, 0x06, 0x00, 0x00);
224 innolux_panel_init_cmd_multi(&ctx, 0xbd, 0x01, 0x90, 0x14, 0x14);
225 innolux_panel_init_cmd_multi(&ctx, 0x6f, 0x01);
226 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x03);
227 innolux_panel_init_cmd_multi(&ctx, 0x6f, 0x02);
228 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x0d);
229 innolux_panel_init_cmd_multi(&ctx, 0xd9, 0x01, 0x09, 0x70);
230 innolux_panel_init_cmd_multi(&ctx, 0xc5, 0x12, 0x21, 0x00);
231 innolux_panel_init_cmd_multi(&ctx, 0xbb, 0x93, 0x93);
232
233 innolux_panel_switch_page(&ctx, 0x01);
234 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x3c, 0x3c);
235 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0x0f, 0x0f);
236 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x45, 0x45);
237 innolux_panel_init_cmd_multi(&ctx, 0xba, 0x14, 0x14);
238 innolux_panel_init_cmd_multi(&ctx, 0xca, 0x02);
239 innolux_panel_init_cmd_multi(&ctx, 0xce, 0x04);
240 innolux_panel_init_cmd_multi(&ctx, 0xc3, 0x9b, 0x9b);
241 innolux_panel_init_cmd_multi(&ctx, 0xd8, 0xc0, 0x03);
242 innolux_panel_init_cmd_multi(&ctx, 0xbc, 0x82, 0x01);
243 innolux_panel_init_cmd_multi(&ctx, 0xbd, 0x9e, 0x01);
244
245 innolux_panel_switch_page(&ctx, 0x02);
246 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x82);
247 innolux_panel_init_cmd_multi(&ctx, 0xd1, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x82, 0x00, 0xa5,
248 0x00, 0xc1, 0x00, 0xea, 0x01, 0x0d, 0x01, 0x40);
249 innolux_panel_init_cmd_multi(&ctx, 0xd2, 0x01, 0x6a, 0x01, 0xa8, 0x01, 0xdc, 0x02, 0x29,
250 0x02, 0x67, 0x02, 0x68, 0x02, 0xa8, 0x02, 0xf0);
251 innolux_panel_init_cmd_multi(&ctx, 0xd3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8c,
252 0x03, 0xa6, 0x03, 0xc7, 0x03, 0xde, 0x03, 0xec);
253 innolux_panel_init_cmd_multi(&ctx, 0xd4, 0x03, 0xff, 0x03, 0xff);
254 innolux_panel_init_cmd_multi(&ctx, 0xe0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xc5, 0x00, 0xe5,
255 0x00, 0xff, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75);
256 innolux_panel_init_cmd_multi(&ctx, 0xe1, 0x01, 0x9c, 0x01, 0xd5, 0x02, 0x05, 0x02, 0x4d,
257 0x02, 0x86, 0x02, 0x87, 0x02, 0xc3, 0x03, 0x03);
258 innolux_panel_init_cmd_multi(&ctx, 0xe2, 0x03, 0x2a, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
259 0x03, 0xac, 0x03, 0xcb, 0x03, 0xe0, 0x03, 0xed);
260 innolux_panel_init_cmd_multi(&ctx, 0xe3, 0x03, 0xff, 0x03, 0xff);
261
262 innolux_panel_switch_page(&ctx, 0x03);
263 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x00, 0x00, 0x00, 0x00);
264 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x00, 0x00, 0x00, 0x00);
265 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85);
266 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x10, 0x07, 0xfc, 0x04, 0x01, 0x40, 0x80);
267 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0xf0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
268 0x40, 0x80);
269 innolux_panel_init_cmd_multi(&ctx, 0xba, 0xc5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8c);
270 innolux_panel_init_cmd_multi(&ctx, 0xbb, 0xc5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8c);
271 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x80, 0x80);
272 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x80, 0x80);
273 innolux_panel_init_cmd_multi(&ctx, 0xc4, 0x00, 0x00);
274 innolux_panel_init_cmd_multi(&ctx, 0xef, 0x41);
275
276 innolux_panel_switch_page(&ctx, 0x04);
277 innolux_panel_init_cmd_multi(&ctx, 0xec, 0x4c);
278
279 innolux_panel_switch_page(&ctx, 0x05);
280 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x13, 0x03, 0x03, 0x01);
281 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x30, 0x00);
282 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x02, 0x02, 0x00);
283 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x82, 0x23, 0x82, 0x9d);
284 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0xc5, 0x75, 0x24, 0x57);
285 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x00, 0xd4, 0x72, 0x11, 0x11, 0xab, 0x0a);
286 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0x00, 0x00, 0xd5, 0x72, 0x24, 0x56);
287 innolux_panel_init_cmd_multi(&ctx, 0xb7, 0x5c, 0xdc, 0x5c, 0x5c);
288 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x0c, 0x00, 0x00, 0x01, 0x00);
289 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x75, 0x11, 0x11, 0x54, 0x05);
290 innolux_panel_init_cmd_multi(&ctx, 0xc6, 0x00, 0x00, 0x00, 0x00);
291 innolux_panel_init_cmd_multi(&ctx, 0xd0, 0x00, 0x48, 0x08, 0x00, 0x00);
292 innolux_panel_init_cmd_multi(&ctx, 0xd1, 0x00, 0x48, 0x09, 0x00, 0x00);
293
294 innolux_panel_switch_page(&ctx, 0x06);
295 innolux_panel_init_cmd_multi(&ctx, 0xb0, 0x02, 0x32, 0x32, 0x08, 0x2f);
296 innolux_panel_init_cmd_multi(&ctx, 0xb1, 0x2e, 0x15, 0x14, 0x13, 0x12);
297 innolux_panel_init_cmd_multi(&ctx, 0xb2, 0x11, 0x10, 0x00, 0x3d, 0x3d);
298 innolux_panel_init_cmd_multi(&ctx, 0xb3, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);
299 innolux_panel_init_cmd_multi(&ctx, 0xb4, 0x3d, 0x32);
300 innolux_panel_init_cmd_multi(&ctx, 0xb5, 0x03, 0x32, 0x32, 0x09, 0x2f);
301 innolux_panel_init_cmd_multi(&ctx, 0xb6, 0x2e, 0x1b, 0x1a, 0x19, 0x18);
302 innolux_panel_init_cmd_multi(&ctx, 0xb7, 0x17, 0x16, 0x01, 0x3d, 0x3d);
303 innolux_panel_init_cmd_multi(&ctx, 0xb8, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);
304 innolux_panel_init_cmd_multi(&ctx, 0xb9, 0x3d, 0x32);
305 innolux_panel_init_cmd_multi(&ctx, 0xc0, 0x01, 0x32, 0x32, 0x09, 0x2f);
306 innolux_panel_init_cmd_multi(&ctx, 0xc1, 0x2e, 0x1a, 0x1b, 0x16, 0x17);
307 innolux_panel_init_cmd_multi(&ctx, 0xc2, 0x18, 0x19, 0x03, 0x3d, 0x3d);
308 innolux_panel_init_cmd_multi(&ctx, 0xc3, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);
309 innolux_panel_init_cmd_multi(&ctx, 0xc4, 0x3d, 0x32);
310 innolux_panel_init_cmd_multi(&ctx, 0xc5, 0x00, 0x32, 0x32, 0x08, 0x2f);
311 innolux_panel_init_cmd_multi(&ctx, 0xc6, 0x2e, 0x14, 0x15, 0x10, 0x11);
312 innolux_panel_init_cmd_multi(&ctx, 0xc7, 0x12, 0x13, 0x02, 0x3d, 0x3d);
313 innolux_panel_init_cmd_multi(&ctx, 0xc8, 0x3d, 0x3d, 0x3d, 0x3d, 0x3d);
314 innolux_panel_init_cmd_multi(&ctx, 0xc9, 0x3d, 0x32);
315
316 return ctx.accum_err;
317}
318
319static const struct panel_desc innolux_p097pfg_panel_desc = {
320 .mode = &innolux_p097pfg_mode,
321 .bpc = 8,
322 .size = {
323 .width = 147,
324 .height = 196,
325 },
326 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
327 MIPI_DSI_MODE_LPM,
328 .format = MIPI_DSI_FMT_RGB888,
329 .init = innolux_p097pfg_init,
330 .lanes = 4,
331 .supply_names = innolux_p097pfg_supply_names,
332 .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
333 .sleep_mode_delay = 100, /* T15 */
334};
335
336static int innolux_panel_get_modes(struct drm_panel *panel,
337 struct drm_connector *connector)
338{
339 struct innolux_panel *innolux = to_innolux_panel(panel);
340 const struct drm_display_mode *m = innolux->desc->mode;
341 struct drm_display_mode *mode;
342
343 mode = drm_mode_duplicate(connector->dev, m);
344 if (!mode) {
345 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
346 m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
347 return -ENOMEM;
348 }
349
350 drm_mode_set_name(mode);
351
352 drm_mode_probed_add(connector, mode);
353
354 connector->display_info.width_mm = innolux->desc->size.width;
355 connector->display_info.height_mm = innolux->desc->size.height;
356 connector->display_info.bpc = innolux->desc->bpc;
357
358 return 1;
359}
360
361static const struct drm_panel_funcs innolux_panel_funcs = {
362 .unprepare = innolux_panel_unprepare,
363 .prepare = innolux_panel_prepare,
364 .get_modes = innolux_panel_get_modes,
365};
366
367static const struct of_device_id innolux_of_match[] = {
368 { .compatible = "innolux,p079zca",
369 .data = &innolux_p079zca_panel_desc
370 },
371 { .compatible = "innolux,p097pfg",
372 .data = &innolux_p097pfg_panel_desc
373 },
374 { }
375};
376MODULE_DEVICE_TABLE(of, innolux_of_match);
377
378static int innolux_panel_add(struct mipi_dsi_device *dsi,
379 const struct panel_desc *desc)
380{
381 struct innolux_panel *innolux;
382 struct device *dev = &dsi->dev;
383 int err, i;
384
385 innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
386 if (!innolux)
387 return -ENOMEM;
388
389 innolux->desc = desc;
390
391 innolux->supplies = devm_kcalloc(dev, desc->num_supplies,
392 sizeof(*innolux->supplies),
393 GFP_KERNEL);
394 if (!innolux->supplies)
395 return -ENOMEM;
396
397 for (i = 0; i < desc->num_supplies; i++)
398 innolux->supplies[i].supply = desc->supply_names[i];
399
400 err = devm_regulator_bulk_get(dev, desc->num_supplies,
401 innolux->supplies);
402 if (err < 0)
403 return err;
404
405 innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
406 GPIOD_OUT_HIGH);
407 if (IS_ERR(innolux->enable_gpio)) {
408 err = PTR_ERR(innolux->enable_gpio);
409 dev_dbg(dev, "failed to get enable gpio: %d\n", err);
410 innolux->enable_gpio = NULL;
411 }
412
413 drm_panel_init(&innolux->base, dev, &innolux_panel_funcs,
414 DRM_MODE_CONNECTOR_DSI);
415
416 err = drm_panel_of_backlight(&innolux->base);
417 if (err)
418 return err;
419
420 drm_panel_add(&innolux->base);
421
422 mipi_dsi_set_drvdata(dsi, innolux);
423 innolux->link = dsi;
424
425 return 0;
426}
427
428static void innolux_panel_del(struct innolux_panel *innolux)
429{
430 drm_panel_remove(&innolux->base);
431}
432
433static int innolux_panel_probe(struct mipi_dsi_device *dsi)
434{
435 const struct panel_desc *desc;
436 struct innolux_panel *innolux;
437 int err;
438
439 desc = of_device_get_match_data(&dsi->dev);
440 dsi->mode_flags = desc->flags;
441 dsi->format = desc->format;
442 dsi->lanes = desc->lanes;
443
444 err = innolux_panel_add(dsi, desc);
445 if (err < 0)
446 return err;
447
448 err = mipi_dsi_attach(dsi);
449 if (err < 0) {
450 innolux = mipi_dsi_get_drvdata(dsi);
451 innolux_panel_del(innolux);
452 return err;
453 }
454
455 return 0;
456}
457
458static void innolux_panel_remove(struct mipi_dsi_device *dsi)
459{
460 struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
461 int err;
462
463
464 err = mipi_dsi_detach(dsi);
465 if (err < 0)
466 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
467
468 innolux_panel_del(innolux);
469}
470
471static struct mipi_dsi_driver innolux_panel_driver = {
472 .driver = {
473 .name = "panel-innolux-p079zca",
474 .of_match_table = innolux_of_match,
475 },
476 .probe = innolux_panel_probe,
477 .remove = innolux_panel_remove,
478};
479module_mipi_dsi_driver(innolux_panel_driver);
480
481MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
482MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");
483MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
484MODULE_LICENSE("GPL v2");