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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Panels based on the Ilitek ILI9882T display controller.
4 */
5#include <linux/delay.h>
6#include <linux/gpio/consumer.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/regulator/consumer.h>
10
11#include <drm/drm_connector.h>
12#include <drm/drm_crtc.h>
13#include <drm/drm_mipi_dsi.h>
14#include <drm/drm_panel.h>
15
16#include <video/mipi_display.h>
17
18struct ili9882t;
19
20/*
21 * Use this descriptor struct to describe different panels using the
22 * Ilitek ILI9882T display controller.
23 */
24struct panel_desc {
25 const struct drm_display_mode *modes;
26 unsigned int bpc;
27
28 /**
29 * @width_mm: width of the panel's active display area
30 * @height_mm: height of the panel's active display area
31 */
32 struct {
33 unsigned int width_mm;
34 unsigned int height_mm;
35 } size;
36
37 unsigned long mode_flags;
38 enum mipi_dsi_pixel_format format;
39 int (*init)(struct ili9882t *boe);
40 unsigned int lanes;
41};
42
43struct ili9882t {
44 struct drm_panel base;
45 struct mipi_dsi_device *dsi;
46
47 const struct panel_desc *desc;
48
49 enum drm_panel_orientation orientation;
50 struct regulator *pp3300;
51 struct regulator *pp1800;
52 struct regulator *avee;
53 struct regulator *avdd;
54 struct gpio_desc *enable_gpio;
55};
56
57/* ILI9882-specific commands, add new commands as you decode them */
58#define ILI9882T_DCS_SWITCH_PAGE 0xFF
59
60#define ili9882t_switch_page(ctx, page) \
61 mipi_dsi_dcs_write_seq_multi(ctx, ILI9882T_DCS_SWITCH_PAGE, \
62 0x98, 0x82, (page))
63
64static int starry_ili9882t_init(struct ili9882t *ili)
65{
66 struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };
67
68 usleep_range(5000, 5100);
69
70 ili9882t_switch_page(&ctx, 0x01);
71 mipi_dsi_dcs_write_seq_multi(&ctx, 0x00, 0x42);
72 mipi_dsi_dcs_write_seq_multi(&ctx, 0x01, 0x11);
73 mipi_dsi_dcs_write_seq_multi(&ctx, 0x02, 0x00);
74 mipi_dsi_dcs_write_seq_multi(&ctx, 0x03, 0x00);
75
76 mipi_dsi_dcs_write_seq_multi(&ctx, 0x04, 0x01);
77 mipi_dsi_dcs_write_seq_multi(&ctx, 0x05, 0x11);
78 mipi_dsi_dcs_write_seq_multi(&ctx, 0x06, 0x00);
79 mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x00);
80
81 mipi_dsi_dcs_write_seq_multi(&ctx, 0x08, 0x80);
82 mipi_dsi_dcs_write_seq_multi(&ctx, 0x09, 0x81);
83 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0a, 0x71);
84 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0b, 0x00);
85
86 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0c, 0x00);
87 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0e, 0x1a);
88
89 mipi_dsi_dcs_write_seq_multi(&ctx, 0x24, 0x00);
90 mipi_dsi_dcs_write_seq_multi(&ctx, 0x25, 0x00);
91 mipi_dsi_dcs_write_seq_multi(&ctx, 0x26, 0x00);
92 mipi_dsi_dcs_write_seq_multi(&ctx, 0x27, 0x00);
93
94 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2c, 0xd4);
95 mipi_dsi_dcs_write_seq_multi(&ctx, 0xb9, 0x40);
96
97 mipi_dsi_dcs_write_seq_multi(&ctx, 0xb0, 0x11);
98
99 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe6, 0x32);
100 mipi_dsi_dcs_write_seq_multi(&ctx, 0xd1, 0x30);
101
102 mipi_dsi_dcs_write_seq_multi(&ctx, 0xd6, 0x55);
103
104 mipi_dsi_dcs_write_seq_multi(&ctx, 0xd0, 0x01);
105 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe3, 0x93);
106 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe4, 0x00);
107 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe5, 0x80);
108
109 mipi_dsi_dcs_write_seq_multi(&ctx, 0x31, 0x07);
110 mipi_dsi_dcs_write_seq_multi(&ctx, 0x32, 0x07);
111 mipi_dsi_dcs_write_seq_multi(&ctx, 0x33, 0x07);
112 mipi_dsi_dcs_write_seq_multi(&ctx, 0x34, 0x07);
113 mipi_dsi_dcs_write_seq_multi(&ctx, 0x35, 0x07);
114 mipi_dsi_dcs_write_seq_multi(&ctx, 0x36, 0x01);
115 mipi_dsi_dcs_write_seq_multi(&ctx, 0x37, 0x00);
116 mipi_dsi_dcs_write_seq_multi(&ctx, 0x38, 0x28);
117 mipi_dsi_dcs_write_seq_multi(&ctx, 0x39, 0x29);
118 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3a, 0x11);
119 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3b, 0x13);
120 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3c, 0x15);
121 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3d, 0x17);
122 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3e, 0x09);
123 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3f, 0x0d);
124 mipi_dsi_dcs_write_seq_multi(&ctx, 0x40, 0x02);
125 mipi_dsi_dcs_write_seq_multi(&ctx, 0x41, 0x02);
126 mipi_dsi_dcs_write_seq_multi(&ctx, 0x42, 0x02);
127 mipi_dsi_dcs_write_seq_multi(&ctx, 0x43, 0x02);
128 mipi_dsi_dcs_write_seq_multi(&ctx, 0x44, 0x02);
129 mipi_dsi_dcs_write_seq_multi(&ctx, 0x45, 0x02);
130 mipi_dsi_dcs_write_seq_multi(&ctx, 0x46, 0x02);
131
132 mipi_dsi_dcs_write_seq_multi(&ctx, 0x47, 0x07);
133 mipi_dsi_dcs_write_seq_multi(&ctx, 0x48, 0x07);
134 mipi_dsi_dcs_write_seq_multi(&ctx, 0x49, 0x07);
135 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4a, 0x07);
136 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4b, 0x07);
137 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4c, 0x01);
138 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4d, 0x00);
139 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4e, 0x28);
140 mipi_dsi_dcs_write_seq_multi(&ctx, 0x4f, 0x29);
141 mipi_dsi_dcs_write_seq_multi(&ctx, 0x50, 0x10);
142 mipi_dsi_dcs_write_seq_multi(&ctx, 0x51, 0x12);
143 mipi_dsi_dcs_write_seq_multi(&ctx, 0x52, 0x14);
144 mipi_dsi_dcs_write_seq_multi(&ctx, 0x53, 0x16);
145 mipi_dsi_dcs_write_seq_multi(&ctx, 0x54, 0x08);
146 mipi_dsi_dcs_write_seq_multi(&ctx, 0x55, 0x0c);
147 mipi_dsi_dcs_write_seq_multi(&ctx, 0x56, 0x02);
148 mipi_dsi_dcs_write_seq_multi(&ctx, 0x57, 0x02);
149 mipi_dsi_dcs_write_seq_multi(&ctx, 0x58, 0x02);
150 mipi_dsi_dcs_write_seq_multi(&ctx, 0x59, 0x02);
151 mipi_dsi_dcs_write_seq_multi(&ctx, 0x5a, 0x02);
152 mipi_dsi_dcs_write_seq_multi(&ctx, 0x5b, 0x02);
153 mipi_dsi_dcs_write_seq_multi(&ctx, 0x5c, 0x02);
154
155 mipi_dsi_dcs_write_seq_multi(&ctx, 0x61, 0x07);
156 mipi_dsi_dcs_write_seq_multi(&ctx, 0x62, 0x07);
157 mipi_dsi_dcs_write_seq_multi(&ctx, 0x63, 0x07);
158 mipi_dsi_dcs_write_seq_multi(&ctx, 0x64, 0x07);
159 mipi_dsi_dcs_write_seq_multi(&ctx, 0x65, 0x07);
160 mipi_dsi_dcs_write_seq_multi(&ctx, 0x66, 0x01);
161 mipi_dsi_dcs_write_seq_multi(&ctx, 0x67, 0x00);
162 mipi_dsi_dcs_write_seq_multi(&ctx, 0x68, 0x28);
163 mipi_dsi_dcs_write_seq_multi(&ctx, 0x69, 0x29);
164 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6a, 0x16);
165 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6b, 0x14);
166 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6c, 0x12);
167 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6d, 0x10);
168 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6e, 0x0c);
169 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6f, 0x08);
170 mipi_dsi_dcs_write_seq_multi(&ctx, 0x70, 0x02);
171 mipi_dsi_dcs_write_seq_multi(&ctx, 0x71, 0x02);
172 mipi_dsi_dcs_write_seq_multi(&ctx, 0x72, 0x02);
173 mipi_dsi_dcs_write_seq_multi(&ctx, 0x73, 0x02);
174 mipi_dsi_dcs_write_seq_multi(&ctx, 0x74, 0x02);
175 mipi_dsi_dcs_write_seq_multi(&ctx, 0x75, 0x02);
176 mipi_dsi_dcs_write_seq_multi(&ctx, 0x76, 0x02);
177
178 mipi_dsi_dcs_write_seq_multi(&ctx, 0x77, 0x07);
179 mipi_dsi_dcs_write_seq_multi(&ctx, 0x78, 0x07);
180 mipi_dsi_dcs_write_seq_multi(&ctx, 0x79, 0x07);
181 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7a, 0x07);
182 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7b, 0x07);
183 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7c, 0x01);
184 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7d, 0x00);
185 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7e, 0x28);
186 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7f, 0x29);
187 mipi_dsi_dcs_write_seq_multi(&ctx, 0x80, 0x17);
188 mipi_dsi_dcs_write_seq_multi(&ctx, 0x81, 0x15);
189 mipi_dsi_dcs_write_seq_multi(&ctx, 0x82, 0x13);
190 mipi_dsi_dcs_write_seq_multi(&ctx, 0x83, 0x11);
191 mipi_dsi_dcs_write_seq_multi(&ctx, 0x84, 0x0d);
192 mipi_dsi_dcs_write_seq_multi(&ctx, 0x85, 0x09);
193 mipi_dsi_dcs_write_seq_multi(&ctx, 0x86, 0x02);
194 mipi_dsi_dcs_write_seq_multi(&ctx, 0x87, 0x07);
195 mipi_dsi_dcs_write_seq_multi(&ctx, 0x88, 0x07);
196 mipi_dsi_dcs_write_seq_multi(&ctx, 0x89, 0x07);
197 mipi_dsi_dcs_write_seq_multi(&ctx, 0x8a, 0x07);
198 mipi_dsi_dcs_write_seq_multi(&ctx, 0x8b, 0x07);
199 mipi_dsi_dcs_write_seq_multi(&ctx, 0x8c, 0x07);
200
201 ili9882t_switch_page(&ctx, 0x02);
202 mipi_dsi_dcs_write_seq_multi(&ctx, 0x29, 0x3a);
203 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2a, 0x3b);
204
205 mipi_dsi_dcs_write_seq_multi(&ctx, 0x06, 0x01);
206 mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x01);
207 mipi_dsi_dcs_write_seq_multi(&ctx, 0x08, 0x0c);
208 mipi_dsi_dcs_write_seq_multi(&ctx, 0x09, 0x44);
209
210 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3c, 0x0a);
211 mipi_dsi_dcs_write_seq_multi(&ctx, 0x39, 0x11);
212 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3d, 0x00);
213 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3a, 0x0c);
214 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3b, 0x44);
215
216 mipi_dsi_dcs_write_seq_multi(&ctx, 0x53, 0x1f);
217 mipi_dsi_dcs_write_seq_multi(&ctx, 0x5e, 0x40);
218 mipi_dsi_dcs_write_seq_multi(&ctx, 0x84, 0x00);
219
220 ili9882t_switch_page(&ctx, 0x03);
221 mipi_dsi_dcs_write_seq_multi(&ctx, 0x20, 0x01);
222 mipi_dsi_dcs_write_seq_multi(&ctx, 0x21, 0x3c);
223 mipi_dsi_dcs_write_seq_multi(&ctx, 0x22, 0xfa);
224
225 ili9882t_switch_page(&ctx, 0x0a);
226 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe0, 0x01);
227 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe2, 0x01);
228 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe5, 0x91);
229 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe6, 0x3c);
230 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe7, 0x00);
231 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe8, 0xfa);
232
233 ili9882t_switch_page(&ctx, 0x12);
234 mipi_dsi_dcs_write_seq_multi(&ctx, 0x87, 0x2c);
235
236 ili9882t_switch_page(&ctx, 0x05);
237 mipi_dsi_dcs_write_seq_multi(&ctx, 0x73, 0xe5);
238 mipi_dsi_dcs_write_seq_multi(&ctx, 0x7f, 0x6b);
239 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6d, 0xa4);
240 mipi_dsi_dcs_write_seq_multi(&ctx, 0x79, 0x54);
241 mipi_dsi_dcs_write_seq_multi(&ctx, 0x69, 0x97);
242 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6a, 0x97);
243 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa5, 0x3f);
244 mipi_dsi_dcs_write_seq_multi(&ctx, 0x61, 0xda);
245 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa7, 0xf1);
246 mipi_dsi_dcs_write_seq_multi(&ctx, 0x5f, 0x01);
247 mipi_dsi_dcs_write_seq_multi(&ctx, 0x62, 0x3f);
248 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1d, 0x90);
249 mipi_dsi_dcs_write_seq_multi(&ctx, 0x86, 0x87);
250
251 ili9882t_switch_page(&ctx, 0x06);
252 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc0, 0x80);
253 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc1, 0x07);
254 mipi_dsi_dcs_write_seq_multi(&ctx, 0xca, 0x58);
255 mipi_dsi_dcs_write_seq_multi(&ctx, 0xcb, 0x02);
256 mipi_dsi_dcs_write_seq_multi(&ctx, 0xce, 0x58);
257 mipi_dsi_dcs_write_seq_multi(&ctx, 0xcf, 0x02);
258 mipi_dsi_dcs_write_seq_multi(&ctx, 0x67, 0x60);
259 mipi_dsi_dcs_write_seq_multi(&ctx, 0x10, 0x00);
260 mipi_dsi_dcs_write_seq_multi(&ctx, 0x92, 0x22);
261 mipi_dsi_dcs_write_seq_multi(&ctx, 0xd3, 0x08);
262 mipi_dsi_dcs_write_seq_multi(&ctx, 0xd6, 0x55);
263 mipi_dsi_dcs_write_seq_multi(&ctx, 0xdc, 0x38);
264
265 ili9882t_switch_page(&ctx, 0x08);
266 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe0, 0x00, 0x10, 0x2a, 0x4d, 0x61, 0x56, 0x6a, 0x6e,
267 0x79, 0x76, 0x8f, 0x95, 0x98, 0xae, 0xaa, 0xb2, 0xbb, 0xce,
268 0xc6, 0xbd, 0xd5, 0xe2, 0xe8);
269 mipi_dsi_dcs_write_seq_multi(&ctx, 0xe1, 0x00, 0x10, 0x2a, 0x4d, 0x61, 0x56, 0x6a, 0x6e,
270 0x79, 0x76, 0x8f, 0x95, 0x98, 0xae, 0xaa, 0xb2, 0xbb, 0xce,
271 0xc6, 0xbd, 0xd5, 0xe2, 0xe8);
272
273 ili9882t_switch_page(&ctx, 0x04);
274 mipi_dsi_dcs_write_seq_multi(&ctx, 0xba, 0x81);
275
276 ili9882t_switch_page(&ctx, 0x0c);
277 mipi_dsi_dcs_write_seq_multi(&ctx, 0x00, 0x02);
278 mipi_dsi_dcs_write_seq_multi(&ctx, 0x01, 0x00);
279 mipi_dsi_dcs_write_seq_multi(&ctx, 0x02, 0x03);
280 mipi_dsi_dcs_write_seq_multi(&ctx, 0x03, 0x01);
281 mipi_dsi_dcs_write_seq_multi(&ctx, 0x04, 0x03);
282 mipi_dsi_dcs_write_seq_multi(&ctx, 0x05, 0x02);
283 mipi_dsi_dcs_write_seq_multi(&ctx, 0x06, 0x04);
284 mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x03);
285 mipi_dsi_dcs_write_seq_multi(&ctx, 0x08, 0x03);
286 mipi_dsi_dcs_write_seq_multi(&ctx, 0x09, 0x04);
287 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0a, 0x04);
288 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0b, 0x05);
289 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0c, 0x04);
290 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0d, 0x06);
291 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0e, 0x05);
292 mipi_dsi_dcs_write_seq_multi(&ctx, 0x0f, 0x07);
293 mipi_dsi_dcs_write_seq_multi(&ctx, 0x10, 0x04);
294 mipi_dsi_dcs_write_seq_multi(&ctx, 0x11, 0x08);
295 mipi_dsi_dcs_write_seq_multi(&ctx, 0x12, 0x05);
296 mipi_dsi_dcs_write_seq_multi(&ctx, 0x13, 0x09);
297 mipi_dsi_dcs_write_seq_multi(&ctx, 0x14, 0x05);
298 mipi_dsi_dcs_write_seq_multi(&ctx, 0x15, 0x0a);
299 mipi_dsi_dcs_write_seq_multi(&ctx, 0x16, 0x06);
300 mipi_dsi_dcs_write_seq_multi(&ctx, 0x17, 0x0b);
301 mipi_dsi_dcs_write_seq_multi(&ctx, 0x18, 0x05);
302 mipi_dsi_dcs_write_seq_multi(&ctx, 0x19, 0x0c);
303 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1a, 0x06);
304 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1b, 0x0d);
305 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1c, 0x06);
306 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1d, 0x0e);
307 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1e, 0x07);
308 mipi_dsi_dcs_write_seq_multi(&ctx, 0x1f, 0x0f);
309 mipi_dsi_dcs_write_seq_multi(&ctx, 0x20, 0x06);
310 mipi_dsi_dcs_write_seq_multi(&ctx, 0x21, 0x10);
311 mipi_dsi_dcs_write_seq_multi(&ctx, 0x22, 0x07);
312 mipi_dsi_dcs_write_seq_multi(&ctx, 0x23, 0x11);
313 mipi_dsi_dcs_write_seq_multi(&ctx, 0x24, 0x07);
314 mipi_dsi_dcs_write_seq_multi(&ctx, 0x25, 0x12);
315 mipi_dsi_dcs_write_seq_multi(&ctx, 0x26, 0x08);
316 mipi_dsi_dcs_write_seq_multi(&ctx, 0x27, 0x13);
317 mipi_dsi_dcs_write_seq_multi(&ctx, 0x28, 0x07);
318 mipi_dsi_dcs_write_seq_multi(&ctx, 0x29, 0x14);
319 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2a, 0x08);
320 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2b, 0x15);
321 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2c, 0x08);
322 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2d, 0x16);
323 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2e, 0x09);
324 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2f, 0x17);
325 mipi_dsi_dcs_write_seq_multi(&ctx, 0x30, 0x08);
326 mipi_dsi_dcs_write_seq_multi(&ctx, 0x31, 0x18);
327 mipi_dsi_dcs_write_seq_multi(&ctx, 0x32, 0x09);
328 mipi_dsi_dcs_write_seq_multi(&ctx, 0x33, 0x19);
329 mipi_dsi_dcs_write_seq_multi(&ctx, 0x34, 0x09);
330 mipi_dsi_dcs_write_seq_multi(&ctx, 0x35, 0x1a);
331 mipi_dsi_dcs_write_seq_multi(&ctx, 0x36, 0x0a);
332 mipi_dsi_dcs_write_seq_multi(&ctx, 0x37, 0x1b);
333 mipi_dsi_dcs_write_seq_multi(&ctx, 0x38, 0x0a);
334 mipi_dsi_dcs_write_seq_multi(&ctx, 0x39, 0x1c);
335 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3a, 0x0a);
336 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3b, 0x1d);
337 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3c, 0x0a);
338 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3d, 0x1e);
339 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3e, 0x0a);
340 mipi_dsi_dcs_write_seq_multi(&ctx, 0x3f, 0x1f);
341
342 ili9882t_switch_page(&ctx, 0x04);
343 mipi_dsi_dcs_write_seq_multi(&ctx, 0xba, 0x01);
344
345 ili9882t_switch_page(&ctx, 0x0e);
346 mipi_dsi_dcs_write_seq_multi(&ctx, 0x02, 0x0c);
347 mipi_dsi_dcs_write_seq_multi(&ctx, 0x20, 0x10);
348 mipi_dsi_dcs_write_seq_multi(&ctx, 0x25, 0x16);
349 mipi_dsi_dcs_write_seq_multi(&ctx, 0x26, 0xe0);
350 mipi_dsi_dcs_write_seq_multi(&ctx, 0x27, 0x00);
351 mipi_dsi_dcs_write_seq_multi(&ctx, 0x29, 0x71);
352 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2a, 0x46);
353 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2b, 0x1f);
354 mipi_dsi_dcs_write_seq_multi(&ctx, 0x2d, 0xc7);
355 mipi_dsi_dcs_write_seq_multi(&ctx, 0x31, 0x02);
356 mipi_dsi_dcs_write_seq_multi(&ctx, 0x32, 0xdf);
357 mipi_dsi_dcs_write_seq_multi(&ctx, 0x33, 0x5a);
358 mipi_dsi_dcs_write_seq_multi(&ctx, 0x34, 0xc0);
359 mipi_dsi_dcs_write_seq_multi(&ctx, 0x35, 0x5a);
360 mipi_dsi_dcs_write_seq_multi(&ctx, 0x36, 0xc0);
361 mipi_dsi_dcs_write_seq_multi(&ctx, 0x38, 0x65);
362 mipi_dsi_dcs_write_seq_multi(&ctx, 0x80, 0x3e);
363 mipi_dsi_dcs_write_seq_multi(&ctx, 0x81, 0xa0);
364 mipi_dsi_dcs_write_seq_multi(&ctx, 0xb0, 0x01);
365 mipi_dsi_dcs_write_seq_multi(&ctx, 0xb1, 0xcc);
366 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc0, 0x12);
367 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc2, 0xcc);
368 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc3, 0xcc);
369 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc4, 0xcc);
370 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc5, 0xcc);
371 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc6, 0xcc);
372 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc7, 0xcc);
373 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc8, 0xcc);
374 mipi_dsi_dcs_write_seq_multi(&ctx, 0xc9, 0xcc);
375 mipi_dsi_dcs_write_seq_multi(&ctx, 0x30, 0x00);
376 mipi_dsi_dcs_write_seq_multi(&ctx, 0x00, 0x81);
377 mipi_dsi_dcs_write_seq_multi(&ctx, 0x08, 0x02);
378 mipi_dsi_dcs_write_seq_multi(&ctx, 0x09, 0x00);
379 mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x21);
380 mipi_dsi_dcs_write_seq_multi(&ctx, 0x04, 0x10);
381
382 ili9882t_switch_page(&ctx, 0x1e);
383 mipi_dsi_dcs_write_seq_multi(&ctx, 0x60, 0x00);
384 mipi_dsi_dcs_write_seq_multi(&ctx, 0x64, 0x00);
385 mipi_dsi_dcs_write_seq_multi(&ctx, 0x6d, 0x00);
386
387 ili9882t_switch_page(&ctx, 0x0b);
388 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa6, 0x44);
389 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa7, 0xb6);
390 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa8, 0x03);
391 mipi_dsi_dcs_write_seq_multi(&ctx, 0xa9, 0x03);
392 mipi_dsi_dcs_write_seq_multi(&ctx, 0xaa, 0x51);
393 mipi_dsi_dcs_write_seq_multi(&ctx, 0xab, 0x51);
394 mipi_dsi_dcs_write_seq_multi(&ctx, 0xac, 0x04);
395 mipi_dsi_dcs_write_seq_multi(&ctx, 0xbd, 0x92);
396 mipi_dsi_dcs_write_seq_multi(&ctx, 0xbe, 0xa1);
397
398 ili9882t_switch_page(&ctx, 0x05);
399 mipi_dsi_dcs_write_seq_multi(&ctx, 0x86, 0x87);
400
401 ili9882t_switch_page(&ctx, 0x06);
402 mipi_dsi_dcs_write_seq_multi(&ctx, 0x92, 0x22);
403
404 ili9882t_switch_page(&ctx, 0x00);
405 mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
406
407 mipi_dsi_msleep(&ctx, 120);
408
409 mipi_dsi_dcs_set_display_on_multi(&ctx);
410
411 mipi_dsi_msleep(&ctx, 20);
412
413 return ctx.accum_err;
414};
415
416static inline struct ili9882t *to_ili9882t(struct drm_panel *panel)
417{
418 return container_of(panel, struct ili9882t, base);
419}
420
421static int ili9882t_disable(struct drm_panel *panel)
422{
423 struct ili9882t *ili = to_ili9882t(panel);
424 struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };
425
426 ili9882t_switch_page(&ctx, 0x00);
427
428 ili->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
429
430 mipi_dsi_dcs_set_display_off_multi(&ctx);
431 mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
432
433 mipi_dsi_msleep(&ctx, 150);
434
435 return ctx.accum_err;
436}
437
438static int ili9882t_unprepare(struct drm_panel *panel)
439{
440 struct ili9882t *ili = to_ili9882t(panel);
441
442 gpiod_set_value(ili->enable_gpio, 0);
443 usleep_range(1000, 2000);
444 regulator_disable(ili->avee);
445 regulator_disable(ili->avdd);
446 usleep_range(5000, 7000);
447 regulator_disable(ili->pp1800);
448 regulator_disable(ili->pp3300);
449
450 return 0;
451}
452
453static int ili9882t_prepare(struct drm_panel *panel)
454{
455 struct ili9882t *ili = to_ili9882t(panel);
456 int ret;
457
458 gpiod_set_value(ili->enable_gpio, 0);
459 usleep_range(1000, 1500);
460
461 ret = regulator_enable(ili->pp3300);
462 if (ret < 0)
463 return ret;
464
465 ret = regulator_enable(ili->pp1800);
466 if (ret < 0)
467 return ret;
468
469 usleep_range(3000, 5000);
470
471 ret = regulator_enable(ili->avdd);
472 if (ret < 0)
473 goto poweroff1v8;
474 ret = regulator_enable(ili->avee);
475 if (ret < 0)
476 goto poweroffavdd;
477
478 usleep_range(10000, 11000);
479
480 // MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high
481 ret = mipi_dsi_dcs_nop(ili->dsi);
482 if (ret < 0) {
483 dev_err(&ili->dsi->dev, "Failed to send NOP: %d\n", ret);
484 goto poweroff;
485 }
486 usleep_range(1000, 2000);
487
488 gpiod_set_value(ili->enable_gpio, 1);
489 usleep_range(1000, 2000);
490 gpiod_set_value(ili->enable_gpio, 0);
491 msleep(50);
492 gpiod_set_value(ili->enable_gpio, 1);
493 usleep_range(6000, 10000);
494
495 ret = ili->desc->init(ili);
496 if (ret < 0)
497 goto poweroff;
498
499 return 0;
500
501poweroff:
502 gpiod_set_value(ili->enable_gpio, 0);
503 regulator_disable(ili->avee);
504poweroffavdd:
505 regulator_disable(ili->avdd);
506poweroff1v8:
507 usleep_range(5000, 7000);
508 regulator_disable(ili->pp1800);
509
510 return ret;
511}
512
513static int ili9882t_enable(struct drm_panel *panel)
514{
515 msleep(130);
516 return 0;
517}
518
519static const struct drm_display_mode starry_ili9882t_default_mode = {
520 .clock = 165280,
521 .hdisplay = 1200,
522 .hsync_start = 1200 + 72,
523 .hsync_end = 1200 + 72 + 30,
524 .htotal = 1200 + 72 + 30 + 72,
525 .vdisplay = 1920,
526 .vsync_start = 1920 + 68,
527 .vsync_end = 1920 + 68 + 2,
528 .vtotal = 1920 + 68 + 2 + 10,
529 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
530};
531
532static const struct panel_desc starry_ili9882t_desc = {
533 .modes = &starry_ili9882t_default_mode,
534 .bpc = 8,
535 .size = {
536 .width_mm = 141,
537 .height_mm = 226,
538 },
539 .lanes = 4,
540 .format = MIPI_DSI_FMT_RGB888,
541 .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
542 MIPI_DSI_MODE_LPM,
543 .init = starry_ili9882t_init,
544};
545
546static int ili9882t_get_modes(struct drm_panel *panel,
547 struct drm_connector *connector)
548{
549 struct ili9882t *ili = to_ili9882t(panel);
550 const struct drm_display_mode *m = ili->desc->modes;
551 struct drm_display_mode *mode;
552
553 mode = drm_mode_duplicate(connector->dev, m);
554 if (!mode) {
555 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
556 m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
557 return -ENOMEM;
558 }
559
560 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
561 drm_mode_set_name(mode);
562 drm_mode_probed_add(connector, mode);
563
564 connector->display_info.width_mm = ili->desc->size.width_mm;
565 connector->display_info.height_mm = ili->desc->size.height_mm;
566 connector->display_info.bpc = ili->desc->bpc;
567
568 return 1;
569}
570
571static enum drm_panel_orientation ili9882t_get_orientation(struct drm_panel *panel)
572{
573 struct ili9882t *ili = to_ili9882t(panel);
574
575 return ili->orientation;
576}
577
578static const struct drm_panel_funcs ili9882t_funcs = {
579 .disable = ili9882t_disable,
580 .unprepare = ili9882t_unprepare,
581 .prepare = ili9882t_prepare,
582 .enable = ili9882t_enable,
583 .get_modes = ili9882t_get_modes,
584 .get_orientation = ili9882t_get_orientation,
585};
586
587static int ili9882t_add(struct ili9882t *ili)
588{
589 struct device *dev = &ili->dsi->dev;
590 int err;
591
592 ili->avdd = devm_regulator_get(dev, "avdd");
593 if (IS_ERR(ili->avdd))
594 return PTR_ERR(ili->avdd);
595
596 ili->avee = devm_regulator_get(dev, "avee");
597 if (IS_ERR(ili->avee))
598 return PTR_ERR(ili->avee);
599
600 ili->pp3300 = devm_regulator_get(dev, "pp3300");
601 if (IS_ERR(ili->pp3300))
602 return PTR_ERR(ili->pp3300);
603
604 ili->pp1800 = devm_regulator_get(dev, "pp1800");
605 if (IS_ERR(ili->pp1800))
606 return PTR_ERR(ili->pp1800);
607
608 ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
609 if (IS_ERR(ili->enable_gpio)) {
610 dev_err(dev, "cannot get reset-gpios %ld\n",
611 PTR_ERR(ili->enable_gpio));
612 return PTR_ERR(ili->enable_gpio);
613 }
614
615 gpiod_set_value(ili->enable_gpio, 0);
616
617 drm_panel_init(&ili->base, dev, &ili9882t_funcs,
618 DRM_MODE_CONNECTOR_DSI);
619 err = of_drm_get_panel_orientation(dev->of_node, &ili->orientation);
620 if (err < 0) {
621 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
622 return err;
623 }
624
625 err = drm_panel_of_backlight(&ili->base);
626 if (err)
627 return err;
628
629 ili->base.funcs = &ili9882t_funcs;
630 ili->base.dev = &ili->dsi->dev;
631
632 drm_panel_add(&ili->base);
633
634 return 0;
635}
636
637static int ili9882t_probe(struct mipi_dsi_device *dsi)
638{
639 struct ili9882t *ili;
640 int ret;
641 const struct panel_desc *desc;
642
643 ili = devm_kzalloc(&dsi->dev, sizeof(*ili), GFP_KERNEL);
644 if (!ili)
645 return -ENOMEM;
646
647 desc = of_device_get_match_data(&dsi->dev);
648 dsi->lanes = desc->lanes;
649 dsi->format = desc->format;
650 dsi->mode_flags = desc->mode_flags;
651 ili->desc = desc;
652 ili->dsi = dsi;
653 ret = ili9882t_add(ili);
654 if (ret < 0)
655 return ret;
656
657 mipi_dsi_set_drvdata(dsi, ili);
658
659 ret = mipi_dsi_attach(dsi);
660 if (ret)
661 drm_panel_remove(&ili->base);
662
663 return ret;
664}
665
666static void ili9882t_remove(struct mipi_dsi_device *dsi)
667{
668 struct ili9882t *ili = mipi_dsi_get_drvdata(dsi);
669 int ret;
670
671 ret = mipi_dsi_detach(dsi);
672 if (ret < 0)
673 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
674
675 if (ili->base.dev)
676 drm_panel_remove(&ili->base);
677}
678
679static const struct of_device_id ili9882t_of_match[] = {
680 { .compatible = "starry,ili9882t",
681 .data = &starry_ili9882t_desc
682 },
683 { /* sentinel */ }
684};
685MODULE_DEVICE_TABLE(of, ili9882t_of_match);
686
687static struct mipi_dsi_driver ili9882t_driver = {
688 .driver = {
689 .name = "panel-ili9882t",
690 .of_match_table = ili9882t_of_match,
691 },
692 .probe = ili9882t_probe,
693 .remove = ili9882t_remove,
694};
695module_mipi_dsi_driver(ili9882t_driver);
696
697MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
698MODULE_DESCRIPTION("Ilitek ILI9882T-based panels driver");
699MODULE_LICENSE("GPL");