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/of_device.h>
11 #include <linux/regulator/consumer.h>
12 
13 #include <video/mipi_display.h>
14 
15 #include <drm/drm_crtc.h>
16 #include <drm/drm_device.h>
17 #include <drm/drm_mipi_dsi.h>
18 #include <drm/drm_modes.h>
19 #include <drm/drm_panel.h>
20 #include <drm/drm_print.h>
21 
22 struct panel_init_cmd {
23 	size_t len;
24 	const char *data;
25 };
26 
27 #define _INIT_CMD(...) { \
28 	.len = sizeof((char[]){__VA_ARGS__}), \
29 	.data = (char[]){__VA_ARGS__} }
30 
31 struct panel_desc {
32 	const struct drm_display_mode *mode;
33 	unsigned int bpc;
34 	struct {
35 		unsigned int width;
36 		unsigned int height;
37 	} size;
38 
39 	unsigned long flags;
40 	enum mipi_dsi_pixel_format format;
41 	const struct panel_init_cmd *init_cmds;
42 	unsigned int lanes;
43 	const char * const *supply_names;
44 	unsigned int num_supplies;
45 	unsigned int sleep_mode_delay;
46 	unsigned int power_down_delay;
47 };
48 
49 struct innolux_panel {
50 	struct drm_panel base;
51 	struct mipi_dsi_device *link;
52 	const struct panel_desc *desc;
53 
54 	struct regulator_bulk_data *supplies;
55 	struct gpio_desc *enable_gpio;
56 
57 	bool prepared;
58 	bool enabled;
59 };
60 
61 static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
62 {
63 	return container_of(panel, struct innolux_panel, base);
64 }
65 
66 static int innolux_panel_disable(struct drm_panel *panel)
67 {
68 	struct innolux_panel *innolux = to_innolux_panel(panel);
69 
70 	if (!innolux->enabled)
71 		return 0;
72 
73 	innolux->enabled = false;
74 
75 	return 0;
76 }
77 
78 static int innolux_panel_unprepare(struct drm_panel *panel)
79 {
80 	struct innolux_panel *innolux = to_innolux_panel(panel);
81 	int err;
82 
83 	if (!innolux->prepared)
84 		return 0;
85 
86 	err = mipi_dsi_dcs_set_display_off(innolux->link);
87 	if (err < 0)
88 		DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
89 			      err);
90 
91 	err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
92 	if (err < 0) {
93 		DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
94 			      err);
95 		return err;
96 	}
97 
98 	if (innolux->desc->sleep_mode_delay)
99 		msleep(innolux->desc->sleep_mode_delay);
100 
101 	gpiod_set_value_cansleep(innolux->enable_gpio, 0);
102 
103 	if (innolux->desc->power_down_delay)
104 		msleep(innolux->desc->power_down_delay);
105 
106 	err = regulator_bulk_disable(innolux->desc->num_supplies,
107 				     innolux->supplies);
108 	if (err < 0)
109 		return err;
110 
111 	innolux->prepared = false;
112 
113 	return 0;
114 }
115 
116 static int innolux_panel_prepare(struct drm_panel *panel)
117 {
118 	struct innolux_panel *innolux = to_innolux_panel(panel);
119 	int err;
120 
121 	if (innolux->prepared)
122 		return 0;
123 
124 	gpiod_set_value_cansleep(innolux->enable_gpio, 0);
125 
126 	err = regulator_bulk_enable(innolux->desc->num_supplies,
127 				    innolux->supplies);
128 	if (err < 0)
129 		return err;
130 
131 	/* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
132 	usleep_range(20000, 21000);
133 
134 	gpiod_set_value_cansleep(innolux->enable_gpio, 1);
135 
136 	/* p079zca: t4, p097pfg: t5 */
137 	usleep_range(20000, 21000);
138 
139 	if (innolux->desc->init_cmds) {
140 		const struct panel_init_cmd *cmds =
141 					innolux->desc->init_cmds;
142 		unsigned int i;
143 
144 		for (i = 0; cmds[i].len != 0; i++) {
145 			const struct panel_init_cmd *cmd = &cmds[i];
146 
147 			err = mipi_dsi_generic_write(innolux->link, cmd->data,
148 						     cmd->len);
149 			if (err < 0) {
150 				dev_err(panel->dev,
151 					"failed to write command %u\n", i);
152 				goto poweroff;
153 			}
154 
155 			/*
156 			 * Included by random guessing, because without this
157 			 * (or at least, some delay), the panel sometimes
158 			 * didn't appear to pick up the command sequence.
159 			 */
160 			err = mipi_dsi_dcs_nop(innolux->link);
161 			if (err < 0) {
162 				dev_err(panel->dev,
163 					"failed to send DCS nop: %d\n", err);
164 				goto poweroff;
165 			}
166 		}
167 	}
168 
169 	err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
170 	if (err < 0) {
171 		DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
172 			      err);
173 		goto poweroff;
174 	}
175 
176 	/* T6: 120ms - 1000ms*/
177 	msleep(120);
178 
179 	err = mipi_dsi_dcs_set_display_on(innolux->link);
180 	if (err < 0) {
181 		DRM_DEV_ERROR(panel->dev, "failed to set display on: %d\n",
182 			      err);
183 		goto poweroff;
184 	}
185 
186 	/* T7: 5ms */
187 	usleep_range(5000, 6000);
188 
189 	innolux->prepared = true;
190 
191 	return 0;
192 
193 poweroff:
194 	gpiod_set_value_cansleep(innolux->enable_gpio, 0);
195 	regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
196 
197 	return err;
198 }
199 
200 static int innolux_panel_enable(struct drm_panel *panel)
201 {
202 	struct innolux_panel *innolux = to_innolux_panel(panel);
203 
204 	if (innolux->enabled)
205 		return 0;
206 
207 	innolux->enabled = true;
208 
209 	return 0;
210 }
211 
212 static const char * const innolux_p079zca_supply_names[] = {
213 	"power",
214 };
215 
216 static const struct drm_display_mode innolux_p079zca_mode = {
217 	.clock = 56900,
218 	.hdisplay = 768,
219 	.hsync_start = 768 + 40,
220 	.hsync_end = 768 + 40 + 40,
221 	.htotal = 768 + 40 + 40 + 40,
222 	.vdisplay = 1024,
223 	.vsync_start = 1024 + 20,
224 	.vsync_end = 1024 + 20 + 4,
225 	.vtotal = 1024 + 20 + 4 + 20,
226 };
227 
228 static const struct panel_desc innolux_p079zca_panel_desc = {
229 	.mode = &innolux_p079zca_mode,
230 	.bpc = 8,
231 	.size = {
232 		.width = 120,
233 		.height = 160,
234 	},
235 	.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
236 		 MIPI_DSI_MODE_LPM,
237 	.format = MIPI_DSI_FMT_RGB888,
238 	.lanes = 4,
239 	.supply_names = innolux_p079zca_supply_names,
240 	.num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
241 	.power_down_delay = 80, /* T8: 80ms - 1000ms */
242 };
243 
244 static const char * const innolux_p097pfg_supply_names[] = {
245 	"avdd",
246 	"avee",
247 };
248 
249 static const struct drm_display_mode innolux_p097pfg_mode = {
250 	.clock = 229000,
251 	.hdisplay = 1536,
252 	.hsync_start = 1536 + 100,
253 	.hsync_end = 1536 + 100 + 24,
254 	.htotal = 1536 + 100 + 24 + 100,
255 	.vdisplay = 2048,
256 	.vsync_start = 2048 + 100,
257 	.vsync_end = 2048 + 100 + 2,
258 	.vtotal = 2048 + 100 + 2 + 18,
259 };
260 
261 /*
262  * Display manufacturer failed to provide init sequencing according to
263  * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
264  * so the init sequence stems from a register dump of a working panel.
265  */
266 static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = {
267 	/* page 0 */
268 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00),
269 	_INIT_CMD(0xB1, 0xE8, 0x11),
270 	_INIT_CMD(0xB2, 0x25, 0x02),
271 	_INIT_CMD(0xB5, 0x08, 0x00),
272 	_INIT_CMD(0xBC, 0x0F, 0x00),
273 	_INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00),
274 	_INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14),
275 	_INIT_CMD(0x6F, 0x01),
276 	_INIT_CMD(0xC0, 0x03),
277 	_INIT_CMD(0x6F, 0x02),
278 	_INIT_CMD(0xC1, 0x0D),
279 	_INIT_CMD(0xD9, 0x01, 0x09, 0x70),
280 	_INIT_CMD(0xC5, 0x12, 0x21, 0x00),
281 	_INIT_CMD(0xBB, 0x93, 0x93),
282 
283 	/* page 1 */
284 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01),
285 	_INIT_CMD(0xB3, 0x3C, 0x3C),
286 	_INIT_CMD(0xB4, 0x0F, 0x0F),
287 	_INIT_CMD(0xB9, 0x45, 0x45),
288 	_INIT_CMD(0xBA, 0x14, 0x14),
289 	_INIT_CMD(0xCA, 0x02),
290 	_INIT_CMD(0xCE, 0x04),
291 	_INIT_CMD(0xC3, 0x9B, 0x9B),
292 	_INIT_CMD(0xD8, 0xC0, 0x03),
293 	_INIT_CMD(0xBC, 0x82, 0x01),
294 	_INIT_CMD(0xBD, 0x9E, 0x01),
295 
296 	/* page 2 */
297 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02),
298 	_INIT_CMD(0xB0, 0x82),
299 	_INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5,
300 		  0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40),
301 	_INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29,
302 		  0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0),
303 	_INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C,
304 		  0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC),
305 	_INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF),
306 	_INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5,
307 		  0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75),
308 	_INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D,
309 		  0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03),
310 	_INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
311 		  0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED),
312 	_INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF),
313 
314 	/* page 3 */
315 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03),
316 	_INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00),
317 	_INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00),
318 	_INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85),
319 	_INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80),
320 	_INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
321 		  0x40, 0x80),
322 	_INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C),
323 	_INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C),
324 	_INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
325 	_INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
326 	_INIT_CMD(0xC4, 0x00, 0x00),
327 	_INIT_CMD(0xEF, 0x41),
328 
329 	/* page 4 */
330 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04),
331 	_INIT_CMD(0xEC, 0x4C),
332 
333 	/* page 5 */
334 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05),
335 	_INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01),
336 	_INIT_CMD(0xB1, 0x30, 0x00),
337 	_INIT_CMD(0xB2, 0x02, 0x02, 0x00),
338 	_INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D),
339 	_INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57),
340 	_INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A),
341 	_INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56),
342 	_INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C),
343 	_INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00),
344 	_INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05),
345 	_INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00),
346 	_INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00),
347 	_INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00),
348 
349 	/* page 6 */
350 	_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06),
351 	_INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F),
352 	_INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12),
353 	_INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D),
354 	_INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
355 	_INIT_CMD(0xB4, 0x3D, 0x32),
356 	_INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F),
357 	_INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18),
358 	_INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D),
359 	_INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
360 	_INIT_CMD(0xB9, 0x3D, 0x32),
361 	_INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F),
362 	_INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17),
363 	_INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D),
364 	_INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
365 	_INIT_CMD(0xC4, 0x3D, 0x32),
366 	_INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F),
367 	_INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11),
368 	_INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D),
369 	_INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
370 	_INIT_CMD(0xC9, 0x3D, 0x32),
371 
372 	{},
373 };
374 
375 static const struct panel_desc innolux_p097pfg_panel_desc = {
376 	.mode = &innolux_p097pfg_mode,
377 	.bpc = 8,
378 	.size = {
379 		.width = 147,
380 		.height = 196,
381 	},
382 	.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
383 		 MIPI_DSI_MODE_LPM,
384 	.format = MIPI_DSI_FMT_RGB888,
385 	.init_cmds = innolux_p097pfg_init_cmds,
386 	.lanes = 4,
387 	.supply_names = innolux_p097pfg_supply_names,
388 	.num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
389 	.sleep_mode_delay = 100, /* T15 */
390 };
391 
392 static int innolux_panel_get_modes(struct drm_panel *panel,
393 				   struct drm_connector *connector)
394 {
395 	struct innolux_panel *innolux = to_innolux_panel(panel);
396 	const struct drm_display_mode *m = innolux->desc->mode;
397 	struct drm_display_mode *mode;
398 
399 	mode = drm_mode_duplicate(connector->dev, m);
400 	if (!mode) {
401 		DRM_DEV_ERROR(panel->dev, "failed to add mode %ux%ux@%u\n",
402 			      m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
403 		return -ENOMEM;
404 	}
405 
406 	drm_mode_set_name(mode);
407 
408 	drm_mode_probed_add(connector, mode);
409 
410 	connector->display_info.width_mm = innolux->desc->size.width;
411 	connector->display_info.height_mm = innolux->desc->size.height;
412 	connector->display_info.bpc = innolux->desc->bpc;
413 
414 	return 1;
415 }
416 
417 static const struct drm_panel_funcs innolux_panel_funcs = {
418 	.disable = innolux_panel_disable,
419 	.unprepare = innolux_panel_unprepare,
420 	.prepare = innolux_panel_prepare,
421 	.enable = innolux_panel_enable,
422 	.get_modes = innolux_panel_get_modes,
423 };
424 
425 static const struct of_device_id innolux_of_match[] = {
426 	{ .compatible = "innolux,p079zca",
427 	  .data = &innolux_p079zca_panel_desc
428 	},
429 	{ .compatible = "innolux,p097pfg",
430 	  .data = &innolux_p097pfg_panel_desc
431 	},
432 	{ }
433 };
434 MODULE_DEVICE_TABLE(of, innolux_of_match);
435 
436 static int innolux_panel_add(struct mipi_dsi_device *dsi,
437 			     const struct panel_desc *desc)
438 {
439 	struct innolux_panel *innolux;
440 	struct device *dev = &dsi->dev;
441 	int err, i;
442 
443 	innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
444 	if (!innolux)
445 		return -ENOMEM;
446 
447 	innolux->desc = desc;
448 
449 	innolux->supplies = devm_kcalloc(dev, desc->num_supplies,
450 					 sizeof(*innolux->supplies),
451 					 GFP_KERNEL);
452 	if (!innolux->supplies)
453 		return -ENOMEM;
454 
455 	for (i = 0; i < desc->num_supplies; i++)
456 		innolux->supplies[i].supply = desc->supply_names[i];
457 
458 	err = devm_regulator_bulk_get(dev, desc->num_supplies,
459 				      innolux->supplies);
460 	if (err < 0)
461 		return err;
462 
463 	innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
464 						       GPIOD_OUT_HIGH);
465 	if (IS_ERR(innolux->enable_gpio)) {
466 		err = PTR_ERR(innolux->enable_gpio);
467 		dev_dbg(dev, "failed to get enable gpio: %d\n", err);
468 		innolux->enable_gpio = NULL;
469 	}
470 
471 	drm_panel_init(&innolux->base, dev, &innolux_panel_funcs,
472 		       DRM_MODE_CONNECTOR_DSI);
473 
474 	err = drm_panel_of_backlight(&innolux->base);
475 	if (err)
476 		return err;
477 
478 	err = drm_panel_add(&innolux->base);
479 	if (err < 0)
480 		return err;
481 
482 	mipi_dsi_set_drvdata(dsi, innolux);
483 	innolux->link = dsi;
484 
485 	return 0;
486 }
487 
488 static void innolux_panel_del(struct innolux_panel *innolux)
489 {
490 	drm_panel_remove(&innolux->base);
491 }
492 
493 static int innolux_panel_probe(struct mipi_dsi_device *dsi)
494 {
495 	const struct panel_desc *desc;
496 	int err;
497 
498 	desc = of_device_get_match_data(&dsi->dev);
499 	dsi->mode_flags = desc->flags;
500 	dsi->format = desc->format;
501 	dsi->lanes = desc->lanes;
502 
503 	err = innolux_panel_add(dsi, desc);
504 	if (err < 0)
505 		return err;
506 
507 	return mipi_dsi_attach(dsi);
508 }
509 
510 static int innolux_panel_remove(struct mipi_dsi_device *dsi)
511 {
512 	struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
513 	int err;
514 
515 	err = drm_panel_unprepare(&innolux->base);
516 	if (err < 0)
517 		DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
518 			      err);
519 
520 	err = drm_panel_disable(&innolux->base);
521 	if (err < 0)
522 		DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
523 
524 	err = mipi_dsi_detach(dsi);
525 	if (err < 0)
526 		DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
527 			      err);
528 
529 	innolux_panel_del(innolux);
530 
531 	return 0;
532 }
533 
534 static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
535 {
536 	struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
537 
538 	drm_panel_unprepare(&innolux->base);
539 	drm_panel_disable(&innolux->base);
540 }
541 
542 static struct mipi_dsi_driver innolux_panel_driver = {
543 	.driver = {
544 		.name = "panel-innolux-p079zca",
545 		.of_match_table = innolux_of_match,
546 	},
547 	.probe = innolux_panel_probe,
548 	.remove = innolux_panel_remove,
549 	.shutdown = innolux_panel_shutdown,
550 };
551 module_mipi_dsi_driver(innolux_panel_driver);
552 
553 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
554 MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");
555 MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
556 MODULE_LICENSE("GPL v2");
557