1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (c) 2024 Collabora
3 
4 #include <linux/delay.h>
5 #include <linux/gpio/consumer.h>
6 #include <linux/module.h>
7 #include <linux/mod_devicetable.h>
8 #include <linux/property.h>
9 #include <linux/regulator/consumer.h>
10 
11 #include <drm/drm_mipi_dsi.h>
12 #include <drm/drm_probe_helper.h>
13 #include <drm/drm_modes.h>
14 #include <drm/drm_panel.h>
15 
16 struct raydium_rm67200_panel_info {
17 	struct drm_display_mode mode;
18 	const struct regulator_bulk_data *regulators;
19 	int num_regulators;
20 	void (*panel_setup)(struct mipi_dsi_multi_context *ctx);
21 };
22 
23 struct raydium_rm67200 {
24 	struct drm_panel panel;
25 	const struct raydium_rm67200_panel_info *panel_info;
26 	struct mipi_dsi_device *dsi;
27 	struct gpio_desc *reset_gpio;
28 	struct regulator_bulk_data *supplies;
29 	int num_supplies;
30 };
31 
to_raydium_rm67200(struct drm_panel * panel)32 static inline struct raydium_rm67200 *to_raydium_rm67200(struct drm_panel *panel)
33 {
34 	return container_of(panel, struct raydium_rm67200, panel);
35 }
36 
raydium_rm67200_reset(struct raydium_rm67200 * ctx)37 static void raydium_rm67200_reset(struct raydium_rm67200 *ctx)
38 {
39 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
40 	msleep(60);
41 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
42 	msleep(60);
43 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
44 	msleep(60);
45 }
46 
raydium_rm67200_write(struct mipi_dsi_multi_context * ctx,u8 arg1,u8 arg2)47 static void raydium_rm67200_write(struct mipi_dsi_multi_context *ctx,
48 				  u8 arg1, u8 arg2)
49 {
50 	u8 d[] = { arg1, arg2 };
51 
52 	mipi_dsi_generic_write_multi(ctx, d, ARRAY_SIZE(d));
53 }
54 
w552793baa_setup(struct mipi_dsi_multi_context * ctx)55 static void w552793baa_setup(struct mipi_dsi_multi_context *ctx)
56 {
57 	raydium_rm67200_write(ctx, 0xfe, 0x21);
58 	raydium_rm67200_write(ctx, 0x04, 0x00);
59 	raydium_rm67200_write(ctx, 0x00, 0x64);
60 	raydium_rm67200_write(ctx, 0x2a, 0x00);
61 	raydium_rm67200_write(ctx, 0x26, 0x64);
62 	raydium_rm67200_write(ctx, 0x54, 0x00);
63 	raydium_rm67200_write(ctx, 0x50, 0x64);
64 	raydium_rm67200_write(ctx, 0x7b, 0x00);
65 	raydium_rm67200_write(ctx, 0x77, 0x64);
66 	raydium_rm67200_write(ctx, 0xa2, 0x00);
67 	raydium_rm67200_write(ctx, 0x9d, 0x64);
68 	raydium_rm67200_write(ctx, 0xc9, 0x00);
69 	raydium_rm67200_write(ctx, 0xc5, 0x64);
70 	raydium_rm67200_write(ctx, 0x01, 0x71);
71 	raydium_rm67200_write(ctx, 0x27, 0x71);
72 	raydium_rm67200_write(ctx, 0x51, 0x71);
73 	raydium_rm67200_write(ctx, 0x78, 0x71);
74 	raydium_rm67200_write(ctx, 0x9e, 0x71);
75 	raydium_rm67200_write(ctx, 0xc6, 0x71);
76 	raydium_rm67200_write(ctx, 0x02, 0x89);
77 	raydium_rm67200_write(ctx, 0x28, 0x89);
78 	raydium_rm67200_write(ctx, 0x52, 0x89);
79 	raydium_rm67200_write(ctx, 0x79, 0x89);
80 	raydium_rm67200_write(ctx, 0x9f, 0x89);
81 	raydium_rm67200_write(ctx, 0xc7, 0x89);
82 	raydium_rm67200_write(ctx, 0x03, 0x9e);
83 	raydium_rm67200_write(ctx, 0x29, 0x9e);
84 	raydium_rm67200_write(ctx, 0x53, 0x9e);
85 	raydium_rm67200_write(ctx, 0x7a, 0x9e);
86 	raydium_rm67200_write(ctx, 0xa0, 0x9e);
87 	raydium_rm67200_write(ctx, 0xc8, 0x9e);
88 	raydium_rm67200_write(ctx, 0x09, 0x00);
89 	raydium_rm67200_write(ctx, 0x05, 0xb0);
90 	raydium_rm67200_write(ctx, 0x31, 0x00);
91 	raydium_rm67200_write(ctx, 0x2b, 0xb0);
92 	raydium_rm67200_write(ctx, 0x5a, 0x00);
93 	raydium_rm67200_write(ctx, 0x55, 0xb0);
94 	raydium_rm67200_write(ctx, 0x80, 0x00);
95 	raydium_rm67200_write(ctx, 0x7c, 0xb0);
96 	raydium_rm67200_write(ctx, 0xa7, 0x00);
97 	raydium_rm67200_write(ctx, 0xa3, 0xb0);
98 	raydium_rm67200_write(ctx, 0xce, 0x00);
99 	raydium_rm67200_write(ctx, 0xca, 0xb0);
100 	raydium_rm67200_write(ctx, 0x06, 0xc0);
101 	raydium_rm67200_write(ctx, 0x2d, 0xc0);
102 	raydium_rm67200_write(ctx, 0x56, 0xc0);
103 	raydium_rm67200_write(ctx, 0x7d, 0xc0);
104 	raydium_rm67200_write(ctx, 0xa4, 0xc0);
105 	raydium_rm67200_write(ctx, 0xcb, 0xc0);
106 	raydium_rm67200_write(ctx, 0x07, 0xcf);
107 	raydium_rm67200_write(ctx, 0x2f, 0xcf);
108 	raydium_rm67200_write(ctx, 0x58, 0xcf);
109 	raydium_rm67200_write(ctx, 0x7e, 0xcf);
110 	raydium_rm67200_write(ctx, 0xa5, 0xcf);
111 	raydium_rm67200_write(ctx, 0xcc, 0xcf);
112 	raydium_rm67200_write(ctx, 0x08, 0xdd);
113 	raydium_rm67200_write(ctx, 0x30, 0xdd);
114 	raydium_rm67200_write(ctx, 0x59, 0xdd);
115 	raydium_rm67200_write(ctx, 0x7f, 0xdd);
116 	raydium_rm67200_write(ctx, 0xa6, 0xdd);
117 	raydium_rm67200_write(ctx, 0xcd, 0xdd);
118 	raydium_rm67200_write(ctx, 0x0e, 0x15);
119 	raydium_rm67200_write(ctx, 0x0a, 0xe9);
120 	raydium_rm67200_write(ctx, 0x36, 0x15);
121 	raydium_rm67200_write(ctx, 0x32, 0xe9);
122 	raydium_rm67200_write(ctx, 0x5f, 0x15);
123 	raydium_rm67200_write(ctx, 0x5b, 0xe9);
124 	raydium_rm67200_write(ctx, 0x85, 0x15);
125 	raydium_rm67200_write(ctx, 0x81, 0xe9);
126 	raydium_rm67200_write(ctx, 0xad, 0x15);
127 	raydium_rm67200_write(ctx, 0xa9, 0xe9);
128 	raydium_rm67200_write(ctx, 0xd3, 0x15);
129 	raydium_rm67200_write(ctx, 0xcf, 0xe9);
130 	raydium_rm67200_write(ctx, 0x0b, 0x14);
131 	raydium_rm67200_write(ctx, 0x33, 0x14);
132 	raydium_rm67200_write(ctx, 0x5c, 0x14);
133 	raydium_rm67200_write(ctx, 0x82, 0x14);
134 	raydium_rm67200_write(ctx, 0xaa, 0x14);
135 	raydium_rm67200_write(ctx, 0xd0, 0x14);
136 	raydium_rm67200_write(ctx, 0x0c, 0x36);
137 	raydium_rm67200_write(ctx, 0x34, 0x36);
138 	raydium_rm67200_write(ctx, 0x5d, 0x36);
139 	raydium_rm67200_write(ctx, 0x83, 0x36);
140 	raydium_rm67200_write(ctx, 0xab, 0x36);
141 	raydium_rm67200_write(ctx, 0xd1, 0x36);
142 	raydium_rm67200_write(ctx, 0x0d, 0x6b);
143 	raydium_rm67200_write(ctx, 0x35, 0x6b);
144 	raydium_rm67200_write(ctx, 0x5e, 0x6b);
145 	raydium_rm67200_write(ctx, 0x84, 0x6b);
146 	raydium_rm67200_write(ctx, 0xac, 0x6b);
147 	raydium_rm67200_write(ctx, 0xd2, 0x6b);
148 	raydium_rm67200_write(ctx, 0x13, 0x5a);
149 	raydium_rm67200_write(ctx, 0x0f, 0x94);
150 	raydium_rm67200_write(ctx, 0x3b, 0x5a);
151 	raydium_rm67200_write(ctx, 0x37, 0x94);
152 	raydium_rm67200_write(ctx, 0x64, 0x5a);
153 	raydium_rm67200_write(ctx, 0x60, 0x94);
154 	raydium_rm67200_write(ctx, 0x8a, 0x5a);
155 	raydium_rm67200_write(ctx, 0x86, 0x94);
156 	raydium_rm67200_write(ctx, 0xb2, 0x5a);
157 	raydium_rm67200_write(ctx, 0xae, 0x94);
158 	raydium_rm67200_write(ctx, 0xd8, 0x5a);
159 	raydium_rm67200_write(ctx, 0xd4, 0x94);
160 	raydium_rm67200_write(ctx, 0x10, 0xd1);
161 	raydium_rm67200_write(ctx, 0x38, 0xd1);
162 	raydium_rm67200_write(ctx, 0x61, 0xd1);
163 	raydium_rm67200_write(ctx, 0x87, 0xd1);
164 	raydium_rm67200_write(ctx, 0xaf, 0xd1);
165 	raydium_rm67200_write(ctx, 0xd5, 0xd1);
166 	raydium_rm67200_write(ctx, 0x11, 0x04);
167 	raydium_rm67200_write(ctx, 0x39, 0x04);
168 	raydium_rm67200_write(ctx, 0x62, 0x04);
169 	raydium_rm67200_write(ctx, 0x88, 0x04);
170 	raydium_rm67200_write(ctx, 0xb0, 0x04);
171 	raydium_rm67200_write(ctx, 0xd6, 0x04);
172 	raydium_rm67200_write(ctx, 0x12, 0x05);
173 	raydium_rm67200_write(ctx, 0x3a, 0x05);
174 	raydium_rm67200_write(ctx, 0x63, 0x05);
175 	raydium_rm67200_write(ctx, 0x89, 0x05);
176 	raydium_rm67200_write(ctx, 0xb1, 0x05);
177 	raydium_rm67200_write(ctx, 0xd7, 0x05);
178 	raydium_rm67200_write(ctx, 0x18, 0xaa);
179 	raydium_rm67200_write(ctx, 0x14, 0x36);
180 	raydium_rm67200_write(ctx, 0x42, 0xaa);
181 	raydium_rm67200_write(ctx, 0x3d, 0x36);
182 	raydium_rm67200_write(ctx, 0x69, 0xaa);
183 	raydium_rm67200_write(ctx, 0x65, 0x36);
184 	raydium_rm67200_write(ctx, 0x8f, 0xaa);
185 	raydium_rm67200_write(ctx, 0x8b, 0x36);
186 	raydium_rm67200_write(ctx, 0xb7, 0xaa);
187 	raydium_rm67200_write(ctx, 0xb3, 0x36);
188 	raydium_rm67200_write(ctx, 0xdd, 0xaa);
189 	raydium_rm67200_write(ctx, 0xd9, 0x36);
190 	raydium_rm67200_write(ctx, 0x15, 0x74);
191 	raydium_rm67200_write(ctx, 0x3f, 0x74);
192 	raydium_rm67200_write(ctx, 0x66, 0x74);
193 	raydium_rm67200_write(ctx, 0x8c, 0x74);
194 	raydium_rm67200_write(ctx, 0xb4, 0x74);
195 	raydium_rm67200_write(ctx, 0xda, 0x74);
196 	raydium_rm67200_write(ctx, 0x16, 0x9f);
197 	raydium_rm67200_write(ctx, 0x40, 0x9f);
198 	raydium_rm67200_write(ctx, 0x67, 0x9f);
199 	raydium_rm67200_write(ctx, 0x8d, 0x9f);
200 	raydium_rm67200_write(ctx, 0xb5, 0x9f);
201 	raydium_rm67200_write(ctx, 0xdb, 0x9f);
202 	raydium_rm67200_write(ctx, 0x17, 0xdc);
203 	raydium_rm67200_write(ctx, 0x41, 0xdc);
204 	raydium_rm67200_write(ctx, 0x68, 0xdc);
205 	raydium_rm67200_write(ctx, 0x8e, 0xdc);
206 	raydium_rm67200_write(ctx, 0xb6, 0xdc);
207 	raydium_rm67200_write(ctx, 0xdc, 0xdc);
208 	raydium_rm67200_write(ctx, 0x1d, 0xff);
209 	raydium_rm67200_write(ctx, 0x19, 0x03);
210 	raydium_rm67200_write(ctx, 0x47, 0xff);
211 	raydium_rm67200_write(ctx, 0x43, 0x03);
212 	raydium_rm67200_write(ctx, 0x6e, 0xff);
213 	raydium_rm67200_write(ctx, 0x6a, 0x03);
214 	raydium_rm67200_write(ctx, 0x94, 0xff);
215 	raydium_rm67200_write(ctx, 0x90, 0x03);
216 	raydium_rm67200_write(ctx, 0xbc, 0xff);
217 	raydium_rm67200_write(ctx, 0xb8, 0x03);
218 	raydium_rm67200_write(ctx, 0xe2, 0xff);
219 	raydium_rm67200_write(ctx, 0xde, 0x03);
220 	raydium_rm67200_write(ctx, 0x1a, 0x35);
221 	raydium_rm67200_write(ctx, 0x44, 0x35);
222 	raydium_rm67200_write(ctx, 0x6b, 0x35);
223 	raydium_rm67200_write(ctx, 0x91, 0x35);
224 	raydium_rm67200_write(ctx, 0xb9, 0x35);
225 	raydium_rm67200_write(ctx, 0xdf, 0x35);
226 	raydium_rm67200_write(ctx, 0x1b, 0x45);
227 	raydium_rm67200_write(ctx, 0x45, 0x45);
228 	raydium_rm67200_write(ctx, 0x6c, 0x45);
229 	raydium_rm67200_write(ctx, 0x92, 0x45);
230 	raydium_rm67200_write(ctx, 0xba, 0x45);
231 	raydium_rm67200_write(ctx, 0xe0, 0x45);
232 	raydium_rm67200_write(ctx, 0x1c, 0x55);
233 	raydium_rm67200_write(ctx, 0x46, 0x55);
234 	raydium_rm67200_write(ctx, 0x6d, 0x55);
235 	raydium_rm67200_write(ctx, 0x93, 0x55);
236 	raydium_rm67200_write(ctx, 0xbb, 0x55);
237 	raydium_rm67200_write(ctx, 0xe1, 0x55);
238 	raydium_rm67200_write(ctx, 0x22, 0xff);
239 	raydium_rm67200_write(ctx, 0x1e, 0x68);
240 	raydium_rm67200_write(ctx, 0x4c, 0xff);
241 	raydium_rm67200_write(ctx, 0x48, 0x68);
242 	raydium_rm67200_write(ctx, 0x73, 0xff);
243 	raydium_rm67200_write(ctx, 0x6f, 0x68);
244 	raydium_rm67200_write(ctx, 0x99, 0xff);
245 	raydium_rm67200_write(ctx, 0x95, 0x68);
246 	raydium_rm67200_write(ctx, 0xc1, 0xff);
247 	raydium_rm67200_write(ctx, 0xbd, 0x68);
248 	raydium_rm67200_write(ctx, 0xe7, 0xff);
249 	raydium_rm67200_write(ctx, 0xe3, 0x68);
250 	raydium_rm67200_write(ctx, 0x1f, 0x7e);
251 	raydium_rm67200_write(ctx, 0x49, 0x7e);
252 	raydium_rm67200_write(ctx, 0x70, 0x7e);
253 	raydium_rm67200_write(ctx, 0x96, 0x7e);
254 	raydium_rm67200_write(ctx, 0xbe, 0x7e);
255 	raydium_rm67200_write(ctx, 0xe4, 0x7e);
256 	raydium_rm67200_write(ctx, 0x20, 0x97);
257 	raydium_rm67200_write(ctx, 0x4a, 0x97);
258 	raydium_rm67200_write(ctx, 0x71, 0x97);
259 	raydium_rm67200_write(ctx, 0x97, 0x97);
260 	raydium_rm67200_write(ctx, 0xbf, 0x97);
261 	raydium_rm67200_write(ctx, 0xe5, 0x97);
262 	raydium_rm67200_write(ctx, 0x21, 0xb5);
263 	raydium_rm67200_write(ctx, 0x4b, 0xb5);
264 	raydium_rm67200_write(ctx, 0x72, 0xb5);
265 	raydium_rm67200_write(ctx, 0x98, 0xb5);
266 	raydium_rm67200_write(ctx, 0xc0, 0xb5);
267 	raydium_rm67200_write(ctx, 0xe6, 0xb5);
268 	raydium_rm67200_write(ctx, 0x25, 0xf0);
269 	raydium_rm67200_write(ctx, 0x23, 0xe8);
270 	raydium_rm67200_write(ctx, 0x4f, 0xf0);
271 	raydium_rm67200_write(ctx, 0x4d, 0xe8);
272 	raydium_rm67200_write(ctx, 0x76, 0xf0);
273 	raydium_rm67200_write(ctx, 0x74, 0xe8);
274 	raydium_rm67200_write(ctx, 0x9c, 0xf0);
275 	raydium_rm67200_write(ctx, 0x9a, 0xe8);
276 	raydium_rm67200_write(ctx, 0xc4, 0xf0);
277 	raydium_rm67200_write(ctx, 0xc2, 0xe8);
278 	raydium_rm67200_write(ctx, 0xea, 0xf0);
279 	raydium_rm67200_write(ctx, 0xe8, 0xe8);
280 	raydium_rm67200_write(ctx, 0x24, 0xff);
281 	raydium_rm67200_write(ctx, 0x4e, 0xff);
282 	raydium_rm67200_write(ctx, 0x75, 0xff);
283 	raydium_rm67200_write(ctx, 0x9b, 0xff);
284 	raydium_rm67200_write(ctx, 0xc3, 0xff);
285 	raydium_rm67200_write(ctx, 0xe9, 0xff);
286 	raydium_rm67200_write(ctx, 0xfe, 0x3d);
287 	raydium_rm67200_write(ctx, 0x00, 0x04);
288 	raydium_rm67200_write(ctx, 0xfe, 0x23);
289 	raydium_rm67200_write(ctx, 0x08, 0x82);
290 	raydium_rm67200_write(ctx, 0x0a, 0x00);
291 	raydium_rm67200_write(ctx, 0x0b, 0x00);
292 	raydium_rm67200_write(ctx, 0x0c, 0x01);
293 	raydium_rm67200_write(ctx, 0x16, 0x00);
294 	raydium_rm67200_write(ctx, 0x18, 0x02);
295 	raydium_rm67200_write(ctx, 0x1b, 0x04);
296 	raydium_rm67200_write(ctx, 0x19, 0x04);
297 	raydium_rm67200_write(ctx, 0x1c, 0x81);
298 	raydium_rm67200_write(ctx, 0x1f, 0x00);
299 	raydium_rm67200_write(ctx, 0x20, 0x03);
300 	raydium_rm67200_write(ctx, 0x23, 0x04);
301 	raydium_rm67200_write(ctx, 0x21, 0x01);
302 	raydium_rm67200_write(ctx, 0x54, 0x63);
303 	raydium_rm67200_write(ctx, 0x55, 0x54);
304 	raydium_rm67200_write(ctx, 0x6e, 0x45);
305 	raydium_rm67200_write(ctx, 0x6d, 0x36);
306 	raydium_rm67200_write(ctx, 0xfe, 0x3d);
307 	raydium_rm67200_write(ctx, 0x55, 0x78);
308 	raydium_rm67200_write(ctx, 0xfe, 0x20);
309 	raydium_rm67200_write(ctx, 0x26, 0x30);
310 	raydium_rm67200_write(ctx, 0xfe, 0x3d);
311 	raydium_rm67200_write(ctx, 0x20, 0x71);
312 	raydium_rm67200_write(ctx, 0x50, 0x8f);
313 	raydium_rm67200_write(ctx, 0x51, 0x8f);
314 	raydium_rm67200_write(ctx, 0xfe, 0x00);
315 	raydium_rm67200_write(ctx, 0x35, 0x00);
316 }
317 
raydium_rm67200_prepare(struct drm_panel * panel)318 static int raydium_rm67200_prepare(struct drm_panel *panel)
319 {
320 	struct raydium_rm67200 *ctx = to_raydium_rm67200(panel);
321 	int ret;
322 
323 	ret = regulator_bulk_enable(ctx->num_supplies, ctx->supplies);
324 	if (ret < 0)
325 		return ret;
326 
327 	raydium_rm67200_reset(ctx);
328 
329 	msleep(60);
330 
331 	return 0;
332 }
333 
raydium_rm67200_unprepare(struct drm_panel * panel)334 static int raydium_rm67200_unprepare(struct drm_panel *panel)
335 {
336 	struct raydium_rm67200 *ctx = to_raydium_rm67200(panel);
337 
338 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
339 	regulator_bulk_disable(ctx->num_supplies, ctx->supplies);
340 
341 	msleep(60);
342 
343 	return 0;
344 }
345 
raydium_rm67200_enable(struct drm_panel * panel)346 static int raydium_rm67200_enable(struct drm_panel *panel)
347 {
348 	struct raydium_rm67200 *rm67200 = to_raydium_rm67200(panel);
349 	struct mipi_dsi_multi_context ctx = { .dsi = rm67200->dsi };
350 
351 	rm67200->panel_info->panel_setup(&ctx);
352 	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
353 	mipi_dsi_msleep(&ctx, 120);
354 	mipi_dsi_dcs_set_display_on_multi(&ctx);
355 	mipi_dsi_msleep(&ctx, 30);
356 
357 	return ctx.accum_err;
358 }
359 
raydium_rm67200_disable(struct drm_panel * panel)360 static int raydium_rm67200_disable(struct drm_panel *panel)
361 {
362 	struct raydium_rm67200 *rm67200 = to_raydium_rm67200(panel);
363 	struct mipi_dsi_multi_context ctx = { .dsi = rm67200->dsi };
364 
365 	mipi_dsi_dcs_set_display_off_multi(&ctx);
366 	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
367 	mipi_dsi_msleep(&ctx, 60);
368 
369 	return ctx.accum_err;
370 }
371 
raydium_rm67200_get_modes(struct drm_panel * panel,struct drm_connector * connector)372 static int raydium_rm67200_get_modes(struct drm_panel *panel,
373 				    struct drm_connector *connector)
374 {
375 	struct raydium_rm67200 *ctx = to_raydium_rm67200(panel);
376 
377 	return drm_connector_helper_get_modes_fixed(connector, &ctx->panel_info->mode);
378 }
379 
380 static const struct drm_panel_funcs raydium_rm67200_funcs = {
381 	.prepare = raydium_rm67200_prepare,
382 	.unprepare = raydium_rm67200_unprepare,
383 	.get_modes = raydium_rm67200_get_modes,
384 	.enable = raydium_rm67200_enable,
385 	.disable = raydium_rm67200_disable,
386 };
387 
raydium_rm67200_probe(struct mipi_dsi_device * dsi)388 static int raydium_rm67200_probe(struct mipi_dsi_device *dsi)
389 {
390 	struct device *dev = &dsi->dev;
391 	struct raydium_rm67200 *ctx;
392 	int ret = 0;
393 
394 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
395 	if (!ctx)
396 		return -ENOMEM;
397 
398 	ctx->panel_info = device_get_match_data(dev);
399 	if (!ctx->panel_info)
400 		return -EINVAL;
401 
402 	ctx->num_supplies = ctx->panel_info->num_regulators;
403 	ret = devm_regulator_bulk_get_const(&dsi->dev,
404 					    ctx->panel_info->num_regulators,
405 					    ctx->panel_info->regulators,
406 					    &ctx->supplies);
407 	if (ret < 0)
408 		return ret;
409 
410 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
411 	if (IS_ERR(ctx->reset_gpio))
412 		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
413 				     "Failed to get reset-gpios\n");
414 
415 	ctx->dsi = dsi;
416 	mipi_dsi_set_drvdata(dsi, ctx);
417 
418 	dsi->lanes = 4;
419 	dsi->format = MIPI_DSI_FMT_RGB888;
420 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
421 			  MIPI_DSI_MODE_LPM;
422 	ctx->panel.prepare_prev_first = true;
423 
424 	drm_panel_init(&ctx->panel, dev, &raydium_rm67200_funcs,
425 		       DRM_MODE_CONNECTOR_DSI);
426 
427 	ret = drm_panel_of_backlight(&ctx->panel);
428 	if (ret)
429 		return ret;
430 
431 	drm_panel_add(&ctx->panel);
432 
433 	ret = mipi_dsi_attach(dsi);
434 	if (ret < 0) {
435 		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
436 		drm_panel_remove(&ctx->panel);
437 	}
438 
439 	return ret;
440 }
441 
raydium_rm67200_remove(struct mipi_dsi_device * dsi)442 static void raydium_rm67200_remove(struct mipi_dsi_device *dsi)
443 {
444 	struct raydium_rm67200 *ctx = mipi_dsi_get_drvdata(dsi);
445 	int ret;
446 
447 	ret = mipi_dsi_detach(dsi);
448 	if (ret < 0)
449 		dev_err(&dsi->dev, "Failed to detach DSI host: %d\n", ret);
450 
451 	drm_panel_remove(&ctx->panel);
452 }
453 
454 static const struct regulator_bulk_data w552793baa_regulators[] = {
455 	{ .supply = "vdd", },		/*  2.8V */
456 	{ .supply = "iovcc", },		/*  1.8V */
457 	{ .supply = "vsp", },		/* +5.5V */
458 	{ .supply = "vsn", },		/* -5.5V */
459 };
460 
461 static const struct raydium_rm67200_panel_info w552793baa_info = {
462 	.mode = {
463 		.clock = 132000,
464 		.hdisplay = 1080,
465 		.hsync_start = 1095,
466 		.hsync_end = 1125,
467 		.htotal = 1129,
468 		.vdisplay = 1920,
469 		.vsync_start = 1935,
470 		.vsync_end = 1950,
471 		.vtotal = 1952,
472 		.width_mm = 68, /* 68.04mm */
473 		.height_mm = 121, /* 120.96mm */
474 		.type = DRM_MODE_TYPE_DRIVER,
475 	},
476 	.regulators = w552793baa_regulators,
477 	.num_regulators = ARRAY_SIZE(w552793baa_regulators),
478 	.panel_setup = w552793baa_setup,
479 };
480 
481 static const struct of_device_id raydium_rm67200_of_match[] = {
482 	{ .compatible = "wanchanglong,w552793baa", .data = &w552793baa_info },
483 	{ /*sentinel*/ }
484 };
485 MODULE_DEVICE_TABLE(of, raydium_rm67200_of_match);
486 
487 static struct mipi_dsi_driver raydium_rm67200_driver = {
488 	.probe = raydium_rm67200_probe,
489 	.remove = raydium_rm67200_remove,
490 	.driver = {
491 		.name = "panel-raydium-rm67200",
492 		.of_match_table = raydium_rm67200_of_match,
493 	},
494 };
495 module_mipi_dsi_driver(raydium_rm67200_driver);
496 
497 MODULE_AUTHOR("Sebastian Reichel <sebastian.reichel@collabora.com>");
498 MODULE_DESCRIPTION("DRM driver for RM67200-equipped DSI panels");
499 MODULE_LICENSE("GPL");
500