1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2017-2018, Bootlin
4  */
5 
6 #include <linux/backlight.h>
7 #include <linux/delay.h>
8 #include <linux/device.h>
9 #include <linux/err.h>
10 #include <linux/errno.h>
11 #include <linux/fb.h>
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 
15 #include <linux/gpio/consumer.h>
16 #include <linux/regulator/consumer.h>
17 
18 #include <drm/drm_mipi_dsi.h>
19 #include <drm/drm_modes.h>
20 #include <drm/drm_panel.h>
21 
22 #include <video/mipi_display.h>
23 
24 struct ili9881c {
25 	struct drm_panel	panel;
26 	struct mipi_dsi_device	*dsi;
27 
28 	struct backlight_device *backlight;
29 	struct regulator	*power;
30 	struct gpio_desc	*reset;
31 };
32 
33 enum ili9881c_op {
34 	ILI9881C_SWITCH_PAGE,
35 	ILI9881C_COMMAND,
36 };
37 
38 struct ili9881c_instr {
39 	enum ili9881c_op	op;
40 
41 	union arg {
42 		struct cmd {
43 			u8	cmd;
44 			u8	data;
45 		} cmd;
46 		u8	page;
47 	} arg;
48 };
49 
50 #define ILI9881C_SWITCH_PAGE_INSTR(_page)	\
51 	{					\
52 		.op = ILI9881C_SWITCH_PAGE,	\
53 		.arg = {			\
54 			.page = (_page),	\
55 		},				\
56 	}
57 
58 #define ILI9881C_COMMAND_INSTR(_cmd, _data)		\
59 	{						\
60 		.op = ILI9881C_COMMAND,		\
61 		.arg = {				\
62 			.cmd = {			\
63 				.cmd = (_cmd),		\
64 				.data = (_data),	\
65 			},				\
66 		},					\
67 	}
68 
69 static const struct ili9881c_instr ili9881c_init[] = {
70 	ILI9881C_SWITCH_PAGE_INSTR(3),
71 	ILI9881C_COMMAND_INSTR(0x01, 0x00),
72 	ILI9881C_COMMAND_INSTR(0x02, 0x00),
73 	ILI9881C_COMMAND_INSTR(0x03, 0x73),
74 	ILI9881C_COMMAND_INSTR(0x04, 0x03),
75 	ILI9881C_COMMAND_INSTR(0x05, 0x00),
76 	ILI9881C_COMMAND_INSTR(0x06, 0x06),
77 	ILI9881C_COMMAND_INSTR(0x07, 0x06),
78 	ILI9881C_COMMAND_INSTR(0x08, 0x00),
79 	ILI9881C_COMMAND_INSTR(0x09, 0x18),
80 	ILI9881C_COMMAND_INSTR(0x0a, 0x04),
81 	ILI9881C_COMMAND_INSTR(0x0b, 0x00),
82 	ILI9881C_COMMAND_INSTR(0x0c, 0x02),
83 	ILI9881C_COMMAND_INSTR(0x0d, 0x03),
84 	ILI9881C_COMMAND_INSTR(0x0e, 0x00),
85 	ILI9881C_COMMAND_INSTR(0x0f, 0x25),
86 	ILI9881C_COMMAND_INSTR(0x10, 0x25),
87 	ILI9881C_COMMAND_INSTR(0x11, 0x00),
88 	ILI9881C_COMMAND_INSTR(0x12, 0x00),
89 	ILI9881C_COMMAND_INSTR(0x13, 0x00),
90 	ILI9881C_COMMAND_INSTR(0x14, 0x00),
91 	ILI9881C_COMMAND_INSTR(0x15, 0x00),
92 	ILI9881C_COMMAND_INSTR(0x16, 0x0C),
93 	ILI9881C_COMMAND_INSTR(0x17, 0x00),
94 	ILI9881C_COMMAND_INSTR(0x18, 0x00),
95 	ILI9881C_COMMAND_INSTR(0x19, 0x00),
96 	ILI9881C_COMMAND_INSTR(0x1a, 0x00),
97 	ILI9881C_COMMAND_INSTR(0x1b, 0x00),
98 	ILI9881C_COMMAND_INSTR(0x1c, 0x00),
99 	ILI9881C_COMMAND_INSTR(0x1d, 0x00),
100 	ILI9881C_COMMAND_INSTR(0x1e, 0xC0),
101 	ILI9881C_COMMAND_INSTR(0x1f, 0x80),
102 	ILI9881C_COMMAND_INSTR(0x20, 0x04),
103 	ILI9881C_COMMAND_INSTR(0x21, 0x01),
104 	ILI9881C_COMMAND_INSTR(0x22, 0x00),
105 	ILI9881C_COMMAND_INSTR(0x23, 0x00),
106 	ILI9881C_COMMAND_INSTR(0x24, 0x00),
107 	ILI9881C_COMMAND_INSTR(0x25, 0x00),
108 	ILI9881C_COMMAND_INSTR(0x26, 0x00),
109 	ILI9881C_COMMAND_INSTR(0x27, 0x00),
110 	ILI9881C_COMMAND_INSTR(0x28, 0x33),
111 	ILI9881C_COMMAND_INSTR(0x29, 0x03),
112 	ILI9881C_COMMAND_INSTR(0x2a, 0x00),
113 	ILI9881C_COMMAND_INSTR(0x2b, 0x00),
114 	ILI9881C_COMMAND_INSTR(0x2c, 0x00),
115 	ILI9881C_COMMAND_INSTR(0x2d, 0x00),
116 	ILI9881C_COMMAND_INSTR(0x2e, 0x00),
117 	ILI9881C_COMMAND_INSTR(0x2f, 0x00),
118 	ILI9881C_COMMAND_INSTR(0x30, 0x00),
119 	ILI9881C_COMMAND_INSTR(0x31, 0x00),
120 	ILI9881C_COMMAND_INSTR(0x32, 0x00),
121 	ILI9881C_COMMAND_INSTR(0x33, 0x00),
122 	ILI9881C_COMMAND_INSTR(0x34, 0x04),
123 	ILI9881C_COMMAND_INSTR(0x35, 0x00),
124 	ILI9881C_COMMAND_INSTR(0x36, 0x00),
125 	ILI9881C_COMMAND_INSTR(0x37, 0x00),
126 	ILI9881C_COMMAND_INSTR(0x38, 0x3C),
127 	ILI9881C_COMMAND_INSTR(0x39, 0x00),
128 	ILI9881C_COMMAND_INSTR(0x3a, 0x00),
129 	ILI9881C_COMMAND_INSTR(0x3b, 0x00),
130 	ILI9881C_COMMAND_INSTR(0x3c, 0x00),
131 	ILI9881C_COMMAND_INSTR(0x3d, 0x00),
132 	ILI9881C_COMMAND_INSTR(0x3e, 0x00),
133 	ILI9881C_COMMAND_INSTR(0x3f, 0x00),
134 	ILI9881C_COMMAND_INSTR(0x40, 0x00),
135 	ILI9881C_COMMAND_INSTR(0x41, 0x00),
136 	ILI9881C_COMMAND_INSTR(0x42, 0x00),
137 	ILI9881C_COMMAND_INSTR(0x43, 0x00),
138 	ILI9881C_COMMAND_INSTR(0x44, 0x00),
139 	ILI9881C_COMMAND_INSTR(0x50, 0x01),
140 	ILI9881C_COMMAND_INSTR(0x51, 0x23),
141 	ILI9881C_COMMAND_INSTR(0x52, 0x45),
142 	ILI9881C_COMMAND_INSTR(0x53, 0x67),
143 	ILI9881C_COMMAND_INSTR(0x54, 0x89),
144 	ILI9881C_COMMAND_INSTR(0x55, 0xab),
145 	ILI9881C_COMMAND_INSTR(0x56, 0x01),
146 	ILI9881C_COMMAND_INSTR(0x57, 0x23),
147 	ILI9881C_COMMAND_INSTR(0x58, 0x45),
148 	ILI9881C_COMMAND_INSTR(0x59, 0x67),
149 	ILI9881C_COMMAND_INSTR(0x5a, 0x89),
150 	ILI9881C_COMMAND_INSTR(0x5b, 0xab),
151 	ILI9881C_COMMAND_INSTR(0x5c, 0xcd),
152 	ILI9881C_COMMAND_INSTR(0x5d, 0xef),
153 	ILI9881C_COMMAND_INSTR(0x5e, 0x11),
154 	ILI9881C_COMMAND_INSTR(0x5f, 0x02),
155 	ILI9881C_COMMAND_INSTR(0x60, 0x02),
156 	ILI9881C_COMMAND_INSTR(0x61, 0x02),
157 	ILI9881C_COMMAND_INSTR(0x62, 0x02),
158 	ILI9881C_COMMAND_INSTR(0x63, 0x02),
159 	ILI9881C_COMMAND_INSTR(0x64, 0x02),
160 	ILI9881C_COMMAND_INSTR(0x65, 0x02),
161 	ILI9881C_COMMAND_INSTR(0x66, 0x02),
162 	ILI9881C_COMMAND_INSTR(0x67, 0x02),
163 	ILI9881C_COMMAND_INSTR(0x68, 0x02),
164 	ILI9881C_COMMAND_INSTR(0x69, 0x02),
165 	ILI9881C_COMMAND_INSTR(0x6a, 0x0C),
166 	ILI9881C_COMMAND_INSTR(0x6b, 0x02),
167 	ILI9881C_COMMAND_INSTR(0x6c, 0x0F),
168 	ILI9881C_COMMAND_INSTR(0x6d, 0x0E),
169 	ILI9881C_COMMAND_INSTR(0x6e, 0x0D),
170 	ILI9881C_COMMAND_INSTR(0x6f, 0x06),
171 	ILI9881C_COMMAND_INSTR(0x70, 0x07),
172 	ILI9881C_COMMAND_INSTR(0x71, 0x02),
173 	ILI9881C_COMMAND_INSTR(0x72, 0x02),
174 	ILI9881C_COMMAND_INSTR(0x73, 0x02),
175 	ILI9881C_COMMAND_INSTR(0x74, 0x02),
176 	ILI9881C_COMMAND_INSTR(0x75, 0x02),
177 	ILI9881C_COMMAND_INSTR(0x76, 0x02),
178 	ILI9881C_COMMAND_INSTR(0x77, 0x02),
179 	ILI9881C_COMMAND_INSTR(0x78, 0x02),
180 	ILI9881C_COMMAND_INSTR(0x79, 0x02),
181 	ILI9881C_COMMAND_INSTR(0x7a, 0x02),
182 	ILI9881C_COMMAND_INSTR(0x7b, 0x02),
183 	ILI9881C_COMMAND_INSTR(0x7c, 0x02),
184 	ILI9881C_COMMAND_INSTR(0x7d, 0x02),
185 	ILI9881C_COMMAND_INSTR(0x7e, 0x02),
186 	ILI9881C_COMMAND_INSTR(0x7f, 0x02),
187 	ILI9881C_COMMAND_INSTR(0x80, 0x0C),
188 	ILI9881C_COMMAND_INSTR(0x81, 0x02),
189 	ILI9881C_COMMAND_INSTR(0x82, 0x0F),
190 	ILI9881C_COMMAND_INSTR(0x83, 0x0E),
191 	ILI9881C_COMMAND_INSTR(0x84, 0x0D),
192 	ILI9881C_COMMAND_INSTR(0x85, 0x06),
193 	ILI9881C_COMMAND_INSTR(0x86, 0x07),
194 	ILI9881C_COMMAND_INSTR(0x87, 0x02),
195 	ILI9881C_COMMAND_INSTR(0x88, 0x02),
196 	ILI9881C_COMMAND_INSTR(0x89, 0x02),
197 	ILI9881C_COMMAND_INSTR(0x8A, 0x02),
198 	ILI9881C_SWITCH_PAGE_INSTR(4),
199 	ILI9881C_COMMAND_INSTR(0x6C, 0x15),
200 	ILI9881C_COMMAND_INSTR(0x6E, 0x22),
201 	ILI9881C_COMMAND_INSTR(0x6F, 0x33),
202 	ILI9881C_COMMAND_INSTR(0x3A, 0xA4),
203 	ILI9881C_COMMAND_INSTR(0x8D, 0x0D),
204 	ILI9881C_COMMAND_INSTR(0x87, 0xBA),
205 	ILI9881C_COMMAND_INSTR(0x26, 0x76),
206 	ILI9881C_COMMAND_INSTR(0xB2, 0xD1),
207 	ILI9881C_SWITCH_PAGE_INSTR(1),
208 	ILI9881C_COMMAND_INSTR(0x22, 0x0A),
209 	ILI9881C_COMMAND_INSTR(0x53, 0xDC),
210 	ILI9881C_COMMAND_INSTR(0x55, 0xA7),
211 	ILI9881C_COMMAND_INSTR(0x50, 0x78),
212 	ILI9881C_COMMAND_INSTR(0x51, 0x78),
213 	ILI9881C_COMMAND_INSTR(0x31, 0x02),
214 	ILI9881C_COMMAND_INSTR(0x60, 0x14),
215 	ILI9881C_COMMAND_INSTR(0xA0, 0x2A),
216 	ILI9881C_COMMAND_INSTR(0xA1, 0x39),
217 	ILI9881C_COMMAND_INSTR(0xA2, 0x46),
218 	ILI9881C_COMMAND_INSTR(0xA3, 0x0e),
219 	ILI9881C_COMMAND_INSTR(0xA4, 0x12),
220 	ILI9881C_COMMAND_INSTR(0xA5, 0x25),
221 	ILI9881C_COMMAND_INSTR(0xA6, 0x19),
222 	ILI9881C_COMMAND_INSTR(0xA7, 0x1d),
223 	ILI9881C_COMMAND_INSTR(0xA8, 0xa6),
224 	ILI9881C_COMMAND_INSTR(0xA9, 0x1C),
225 	ILI9881C_COMMAND_INSTR(0xAA, 0x29),
226 	ILI9881C_COMMAND_INSTR(0xAB, 0x85),
227 	ILI9881C_COMMAND_INSTR(0xAC, 0x1C),
228 	ILI9881C_COMMAND_INSTR(0xAD, 0x1B),
229 	ILI9881C_COMMAND_INSTR(0xAE, 0x51),
230 	ILI9881C_COMMAND_INSTR(0xAF, 0x22),
231 	ILI9881C_COMMAND_INSTR(0xB0, 0x2d),
232 	ILI9881C_COMMAND_INSTR(0xB1, 0x4f),
233 	ILI9881C_COMMAND_INSTR(0xB2, 0x59),
234 	ILI9881C_COMMAND_INSTR(0xB3, 0x3F),
235 	ILI9881C_COMMAND_INSTR(0xC0, 0x2A),
236 	ILI9881C_COMMAND_INSTR(0xC1, 0x3a),
237 	ILI9881C_COMMAND_INSTR(0xC2, 0x45),
238 	ILI9881C_COMMAND_INSTR(0xC3, 0x0e),
239 	ILI9881C_COMMAND_INSTR(0xC4, 0x11),
240 	ILI9881C_COMMAND_INSTR(0xC5, 0x24),
241 	ILI9881C_COMMAND_INSTR(0xC6, 0x1a),
242 	ILI9881C_COMMAND_INSTR(0xC7, 0x1c),
243 	ILI9881C_COMMAND_INSTR(0xC8, 0xaa),
244 	ILI9881C_COMMAND_INSTR(0xC9, 0x1C),
245 	ILI9881C_COMMAND_INSTR(0xCA, 0x29),
246 	ILI9881C_COMMAND_INSTR(0xCB, 0x96),
247 	ILI9881C_COMMAND_INSTR(0xCC, 0x1C),
248 	ILI9881C_COMMAND_INSTR(0xCD, 0x1B),
249 	ILI9881C_COMMAND_INSTR(0xCE, 0x51),
250 	ILI9881C_COMMAND_INSTR(0xCF, 0x22),
251 	ILI9881C_COMMAND_INSTR(0xD0, 0x2b),
252 	ILI9881C_COMMAND_INSTR(0xD1, 0x4b),
253 	ILI9881C_COMMAND_INSTR(0xD2, 0x59),
254 	ILI9881C_COMMAND_INSTR(0xD3, 0x3F),
255 };
256 
257 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)
258 {
259 	return container_of(panel, struct ili9881c, panel);
260 }
261 
262 /*
263  * The panel seems to accept some private DCS commands that map
264  * directly to registers.
265  *
266  * It is organised by page, with each page having its own set of
267  * registers, and the first page looks like it's holding the standard
268  * DCS commands.
269  *
270  * So before any attempt at sending a command or data, we have to be
271  * sure if we're in the right page or not.
272  */
273 static int ili9881c_switch_page(struct ili9881c *ctx, u8 page)
274 {
275 	u8 buf[4] = { 0xff, 0x98, 0x81, page };
276 	int ret;
277 
278 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
279 	if (ret < 0)
280 		return ret;
281 
282 	return 0;
283 }
284 
285 static int ili9881c_send_cmd_data(struct ili9881c *ctx, u8 cmd, u8 data)
286 {
287 	u8 buf[2] = { cmd, data };
288 	int ret;
289 
290 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
291 	if (ret < 0)
292 		return ret;
293 
294 	return 0;
295 }
296 
297 static int ili9881c_prepare(struct drm_panel *panel)
298 {
299 	struct ili9881c *ctx = panel_to_ili9881c(panel);
300 	unsigned int i;
301 	int ret;
302 
303 	/* Power the panel */
304 	ret = regulator_enable(ctx->power);
305 	if (ret)
306 		return ret;
307 	msleep(5);
308 
309 	/* And reset it */
310 	gpiod_set_value(ctx->reset, 1);
311 	msleep(20);
312 
313 	gpiod_set_value(ctx->reset, 0);
314 	msleep(20);
315 
316 	for (i = 0; i < ARRAY_SIZE(ili9881c_init); i++) {
317 		const struct ili9881c_instr *instr = &ili9881c_init[i];
318 
319 		if (instr->op == ILI9881C_SWITCH_PAGE)
320 			ret = ili9881c_switch_page(ctx, instr->arg.page);
321 		else if (instr->op == ILI9881C_COMMAND)
322 			ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd,
323 						      instr->arg.cmd.data);
324 
325 		if (ret)
326 			return ret;
327 	}
328 
329 	ret = ili9881c_switch_page(ctx, 0);
330 	if (ret)
331 		return ret;
332 
333 	ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
334 	if (ret)
335 		return ret;
336 
337 	ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
338 	if (ret)
339 		return ret;
340 
341 	return 0;
342 }
343 
344 static int ili9881c_enable(struct drm_panel *panel)
345 {
346 	struct ili9881c *ctx = panel_to_ili9881c(panel);
347 
348 	msleep(120);
349 
350 	mipi_dsi_dcs_set_display_on(ctx->dsi);
351 	backlight_enable(ctx->backlight);
352 
353 	return 0;
354 }
355 
356 static int ili9881c_disable(struct drm_panel *panel)
357 {
358 	struct ili9881c *ctx = panel_to_ili9881c(panel);
359 
360 	backlight_disable(ctx->backlight);
361 	return mipi_dsi_dcs_set_display_off(ctx->dsi);
362 }
363 
364 static int ili9881c_unprepare(struct drm_panel *panel)
365 {
366 	struct ili9881c *ctx = panel_to_ili9881c(panel);
367 
368 	mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
369 	regulator_disable(ctx->power);
370 	gpiod_set_value(ctx->reset, 1);
371 
372 	return 0;
373 }
374 
375 static const struct drm_display_mode bananapi_default_mode = {
376 	.clock		= 62000,
377 	.vrefresh	= 60,
378 
379 	.hdisplay	= 720,
380 	.hsync_start	= 720 + 10,
381 	.hsync_end	= 720 + 10 + 20,
382 	.htotal		= 720 + 10 + 20 + 30,
383 
384 	.vdisplay	= 1280,
385 	.vsync_start	= 1280 + 10,
386 	.vsync_end	= 1280 + 10 + 10,
387 	.vtotal		= 1280 + 10 + 10 + 20,
388 };
389 
390 static int ili9881c_get_modes(struct drm_panel *panel)
391 {
392 	struct drm_connector *connector = panel->connector;
393 	struct ili9881c *ctx = panel_to_ili9881c(panel);
394 	struct drm_display_mode *mode;
395 
396 	mode = drm_mode_duplicate(panel->drm, &bananapi_default_mode);
397 	if (!mode) {
398 		dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
399 			bananapi_default_mode.hdisplay,
400 			bananapi_default_mode.vdisplay,
401 			bananapi_default_mode.vrefresh);
402 		return -ENOMEM;
403 	}
404 
405 	drm_mode_set_name(mode);
406 
407 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
408 	drm_mode_probed_add(connector, mode);
409 
410 	panel->connector->display_info.width_mm = 62;
411 	panel->connector->display_info.height_mm = 110;
412 
413 	return 1;
414 }
415 
416 static const struct drm_panel_funcs ili9881c_funcs = {
417 	.prepare	= ili9881c_prepare,
418 	.unprepare	= ili9881c_unprepare,
419 	.enable		= ili9881c_enable,
420 	.disable	= ili9881c_disable,
421 	.get_modes	= ili9881c_get_modes,
422 };
423 
424 static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
425 {
426 	struct device_node *np;
427 	struct ili9881c *ctx;
428 	int ret;
429 
430 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
431 	if (!ctx)
432 		return -ENOMEM;
433 	mipi_dsi_set_drvdata(dsi, ctx);
434 	ctx->dsi = dsi;
435 
436 	drm_panel_init(&ctx->panel);
437 	ctx->panel.dev = &dsi->dev;
438 	ctx->panel.funcs = &ili9881c_funcs;
439 
440 	ctx->power = devm_regulator_get(&dsi->dev, "power");
441 	if (IS_ERR(ctx->power)) {
442 		dev_err(&dsi->dev, "Couldn't get our power regulator\n");
443 		return PTR_ERR(ctx->power);
444 	}
445 
446 	ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
447 	if (IS_ERR(ctx->reset)) {
448 		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
449 		return PTR_ERR(ctx->reset);
450 	}
451 
452 	np = of_parse_phandle(dsi->dev.of_node, "backlight", 0);
453 	if (np) {
454 		ctx->backlight = of_find_backlight_by_node(np);
455 		of_node_put(np);
456 
457 		if (!ctx->backlight)
458 			return -EPROBE_DEFER;
459 	}
460 
461 	ret = drm_panel_add(&ctx->panel);
462 	if (ret < 0)
463 		return ret;
464 
465 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
466 	dsi->format = MIPI_DSI_FMT_RGB888;
467 	dsi->lanes = 4;
468 
469 	return mipi_dsi_attach(dsi);
470 }
471 
472 static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)
473 {
474 	struct ili9881c *ctx = mipi_dsi_get_drvdata(dsi);
475 
476 	mipi_dsi_detach(dsi);
477 	drm_panel_remove(&ctx->panel);
478 
479 	if (ctx->backlight)
480 		put_device(&ctx->backlight->dev);
481 
482 	return 0;
483 }
484 
485 static const struct of_device_id ili9881c_of_match[] = {
486 	{ .compatible = "bananapi,lhr050h41" },
487 	{ }
488 };
489 MODULE_DEVICE_TABLE(of, ili9881c_of_match);
490 
491 static struct mipi_dsi_driver ili9881c_dsi_driver = {
492 	.probe		= ili9881c_dsi_probe,
493 	.remove		= ili9881c_dsi_remove,
494 	.driver = {
495 		.name		= "ili9881c-dsi",
496 		.of_match_table	= ili9881c_of_match,
497 	},
498 };
499 module_mipi_dsi_driver(ili9881c_dsi_driver);
500 
501 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
502 MODULE_DESCRIPTION("Ilitek ILI9881C Controller Driver");
503 MODULE_LICENSE("GPL v2");
504