1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
4 * Copyright (c) 2023 Linaro Limited
5 */
6
7#include <linux/backlight.h>
8#include <linux/delay.h>
9#include <linux/gpio/consumer.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/regulator/consumer.h>
13
14#include <drm/display/drm_dsc.h>
15#include <drm/display/drm_dsc_helper.h>
16#include <drm/drm_mipi_dsi.h>
17#include <drm/drm_modes.h>
18#include <drm/drm_panel.h>
19
20struct rm692e5_panel {
21 struct drm_panel panel;
22 struct mipi_dsi_device *dsi;
23 struct drm_dsc_config dsc;
24 struct regulator_bulk_data supplies[3];
25 struct gpio_desc *reset_gpio;
26 bool prepared;
27};
28
29static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel)
30{
31 return container_of(panel, struct rm692e5_panel, panel);
32}
33
34static void rm692e5_reset(struct rm692e5_panel *ctx)
35{
36 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0);
37 usleep_range(min: 10000, max: 11000);
38 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
39 usleep_range(min: 5000, max: 6000);
40 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0);
41 usleep_range(min: 10000, max: 11000);
42}
43
44static int rm692e5_on(struct rm692e5_panel *ctx)
45{
46 struct mipi_dsi_device *dsi = ctx->dsi;
47 struct device *dev = &dsi->dev;
48 int ret;
49
50 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
51
52 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41);
53 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00);
54 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16);
55 mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87);
56 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71);
57 mipi_dsi_generic_write_seq(dsi, 0x82, 0x01);
58 mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00);
59 mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c);
60 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64);
61 mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c);
62 mipi_dsi_generic_write_seq(dsi, 0xca, 0x80);
63 mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02);
64 mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02);
65 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
66 mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
67 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
68 mipi_dsi_generic_write_seq(dsi, 0x00, 0xff);
69 mipi_dsi_generic_write_seq(dsi, 0x01, 0xff);
70 mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf);
71 mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc);
72 mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9);
73 mipi_dsi_generic_write_seq(dsi, 0x05, 0x99);
74 mipi_dsi_generic_write_seq(dsi, 0x06, 0x02);
75 mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a);
76 mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0);
77 mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c);
78 mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb);
79 mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8);
80 mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32);
81 mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07);
82 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4);
83 mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0);
84 mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff);
85 mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff);
86 mipi_dsi_generic_write_seq(dsi, 0x10, 0x33);
87 mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f);
88 mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e);
89 mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6);
90 mipi_dsi_generic_write_seq(dsi, 0x14, 0x80);
91 mipi_dsi_generic_write_seq(dsi, 0x15, 0x02);
92 mipi_dsi_generic_write_seq(dsi, 0x16, 0x38);
93 mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3);
94 mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a);
95 mipi_dsi_generic_write_seq(dsi, 0x19, 0xba);
96 mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc);
97 mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01);
98
99 ret = mipi_dsi_dcs_nop(dsi);
100 if (ret < 0) {
101 dev_err(dev, "Failed to nop: %d\n", ret);
102 return ret;
103 }
104 msleep(msecs: 32);
105
106 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38);
107 mipi_dsi_generic_write_seq(dsi, 0x18, 0x13);
108 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1);
109 mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00);
110 mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00);
111 mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00);
112 mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00);
113 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01);
114 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9);
115 mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf);
116 mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37);
117 mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b);
118 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
119 mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01);
120 mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08);
121 mipi_dsi_generic_write_seq(dsi, 0x35, 0x00);
122 mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42);
123
124 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
125 if (ret < 0) {
126 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
127 return ret;
128 }
129 msleep(msecs: 100);
130
131 ret = mipi_dsi_dcs_set_display_on(dsi);
132 if (ret < 0) {
133 dev_err(dev, "Failed to set display on: %d\n", ret);
134 return ret;
135 }
136
137 return 0;
138}
139
140static int rm692e5_disable(struct drm_panel *panel)
141{
142 struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
143 struct mipi_dsi_device *dsi = ctx->dsi;
144 struct device *dev = &dsi->dev;
145 int ret;
146
147 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
148
149 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00);
150
151 ret = mipi_dsi_dcs_set_display_off(dsi);
152 if (ret < 0) {
153 dev_err(dev, "Failed to set display off: %d\n", ret);
154 return ret;
155 }
156
157 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
158 if (ret < 0) {
159 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
160 return ret;
161 }
162 msleep(msecs: 100);
163
164 return 0;
165}
166
167static int rm692e5_prepare(struct drm_panel *panel)
168{
169 struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
170 struct drm_dsc_picture_parameter_set pps;
171 struct device *dev = &ctx->dsi->dev;
172 int ret;
173
174 if (ctx->prepared)
175 return 0;
176
177 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies);
178 if (ret < 0) {
179 dev_err(dev, "Failed to enable regulators: %d\n", ret);
180 return ret;
181 }
182
183 rm692e5_reset(ctx);
184
185 ret = rm692e5_on(ctx);
186 if (ret < 0) {
187 dev_err(dev, "Failed to initialize panel: %d\n", ret);
188 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
189 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies);
190 return ret;
191 }
192
193 drm_dsc_pps_payload_pack(pps_sdp: &pps, dsc_cfg: &ctx->dsc);
194
195 ret = mipi_dsi_picture_parameter_set(dsi: ctx->dsi, pps: &pps);
196 if (ret < 0) {
197 dev_err(panel->dev, "failed to transmit PPS: %d\n", ret);
198 return ret;
199 }
200
201 ret = mipi_dsi_compression_mode(dsi: ctx->dsi, enable: true);
202 if (ret < 0) {
203 dev_err(dev, "failed to enable compression mode: %d\n", ret);
204 return ret;
205 }
206
207 msleep(msecs: 28);
208
209 mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40);
210
211 /* 0x05 -> 90Hz, 0x00 -> 60Hz */
212 mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05);
213
214 mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00);
215
216 ctx->prepared = true;
217
218 return 0;
219}
220
221static int rm692e5_unprepare(struct drm_panel *panel)
222{
223 struct rm692e5_panel *ctx = to_rm692e5_panel(panel);
224
225 if (!ctx->prepared)
226 return 0;
227
228 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
229 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies);
230
231 ctx->prepared = false;
232 return 0;
233}
234
235static const struct drm_display_mode rm692e5_mode = {
236 .clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000,
237 .hdisplay = 1224,
238 .hsync_start = 1224 + 32,
239 .hsync_end = 1224 + 32 + 8,
240 .htotal = 1224 + 32 + 8 + 8,
241 .vdisplay = 2700,
242 .vsync_start = 2700 + 8,
243 .vsync_end = 2700 + 8 + 2,
244 .vtotal = 2700 + 8 + 2 + 8,
245 .width_mm = 68,
246 .height_mm = 150,
247};
248
249static int rm692e5_get_modes(struct drm_panel *panel,
250 struct drm_connector *connector)
251{
252 struct drm_display_mode *mode;
253
254 mode = drm_mode_duplicate(dev: connector->dev, mode: &rm692e5_mode);
255 if (!mode)
256 return -ENOMEM;
257
258 drm_mode_set_name(mode);
259
260 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
261 connector->display_info.width_mm = mode->width_mm;
262 connector->display_info.height_mm = mode->height_mm;
263 drm_mode_probed_add(connector, mode);
264
265 return 1;
266}
267
268static const struct drm_panel_funcs rm692e5_panel_funcs = {
269 .prepare = rm692e5_prepare,
270 .unprepare = rm692e5_unprepare,
271 .disable = rm692e5_disable,
272 .get_modes = rm692e5_get_modes,
273};
274
275static int rm692e5_bl_update_status(struct backlight_device *bl)
276{
277 struct mipi_dsi_device *dsi = bl_get_data(bl_dev: bl);
278 u16 brightness = backlight_get_brightness(bd: bl);
279 int ret;
280
281 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
282
283 ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
284 if (ret < 0)
285 return ret;
286
287 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
288
289 return 0;
290}
291
292static int rm692e5_bl_get_brightness(struct backlight_device *bl)
293{
294 struct mipi_dsi_device *dsi = bl_get_data(bl_dev: bl);
295 u16 brightness;
296 int ret;
297
298 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
299
300 ret = mipi_dsi_dcs_get_display_brightness_large(dsi, brightness: &brightness);
301 if (ret < 0)
302 return ret;
303
304 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
305
306 return brightness;
307}
308
309static const struct backlight_ops rm692e5_bl_ops = {
310 .update_status = rm692e5_bl_update_status,
311 .get_brightness = rm692e5_bl_get_brightness,
312};
313
314static struct backlight_device *
315rm692e5_create_backlight(struct mipi_dsi_device *dsi)
316{
317 struct device *dev = &dsi->dev;
318 const struct backlight_properties props = {
319 .type = BACKLIGHT_RAW,
320 .brightness = 4095,
321 .max_brightness = 4095,
322 };
323
324 return devm_backlight_device_register(dev, name: dev_name(dev), parent: dev, devdata: dsi,
325 ops: &rm692e5_bl_ops, props: &props);
326}
327
328static int rm692e5_probe(struct mipi_dsi_device *dsi)
329{
330 struct device *dev = &dsi->dev;
331 struct rm692e5_panel *ctx;
332 int ret;
333
334 ctx = devm_kzalloc(dev, size: sizeof(*ctx), GFP_KERNEL);
335 if (!ctx)
336 return -ENOMEM;
337
338 ctx->supplies[0].supply = "vddio";
339 ctx->supplies[1].supply = "dvdd";
340 ctx->supplies[2].supply = "vci";
341 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
342 consumers: ctx->supplies);
343 if (ret < 0)
344 return dev_err_probe(dev, err: ret, fmt: "Failed to get regulators\n");
345
346 ctx->reset_gpio = devm_gpiod_get(dev, con_id: "reset", flags: GPIOD_OUT_HIGH);
347 if (IS_ERR(ptr: ctx->reset_gpio))
348 return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->reset_gpio),
349 fmt: "Failed to get reset-gpios\n");
350
351 ctx->dsi = dsi;
352 mipi_dsi_set_drvdata(dsi, data: ctx);
353
354 dsi->lanes = 4;
355 dsi->format = MIPI_DSI_FMT_RGB888;
356 dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET |
357 MIPI_DSI_CLOCK_NON_CONTINUOUS;
358
359 drm_panel_init(panel: &ctx->panel, dev, funcs: &rm692e5_panel_funcs,
360 DRM_MODE_CONNECTOR_DSI);
361 ctx->panel.prepare_prev_first = true;
362
363 ctx->panel.backlight = rm692e5_create_backlight(dsi);
364 if (IS_ERR(ptr: ctx->panel.backlight))
365 return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->panel.backlight),
366 fmt: "Failed to create backlight\n");
367
368 drm_panel_add(panel: &ctx->panel);
369
370 /* This panel only supports DSC; unconditionally enable it */
371 dsi->dsc = &ctx->dsc;
372
373 /* TODO: Pass slice_per_pkt = 2 */
374 ctx->dsc.dsc_version_major = 1;
375 ctx->dsc.dsc_version_minor = 1;
376 ctx->dsc.slice_height = 60;
377 ctx->dsc.slice_width = 1224;
378
379 ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width;
380 ctx->dsc.bits_per_component = 8;
381 ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */
382 ctx->dsc.block_pred_enable = true;
383
384 ret = mipi_dsi_attach(dsi);
385 if (ret < 0) {
386 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
387 drm_panel_remove(panel: &ctx->panel);
388 return ret;
389 }
390
391 return 0;
392}
393
394static void rm692e5_remove(struct mipi_dsi_device *dsi)
395{
396 struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi);
397 int ret;
398
399 ret = mipi_dsi_detach(dsi);
400 if (ret < 0)
401 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
402
403 drm_panel_remove(panel: &ctx->panel);
404}
405
406static const struct of_device_id rm692e5_of_match[] = {
407 { .compatible = "fairphone,fp5-rm692e5-boe" },
408 { }
409};
410MODULE_DEVICE_TABLE(of, rm692e5_of_match);
411
412static struct mipi_dsi_driver rm692e5_driver = {
413 .probe = rm692e5_probe,
414 .remove = rm692e5_remove,
415 .driver = {
416 .name = "panel-rm692e5-boe-amoled",
417 .of_match_table = rm692e5_of_match,
418 },
419};
420module_mipi_dsi_driver(rm692e5_driver);
421
422MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels");
423MODULE_LICENSE("GPL");
424

source code of linux/drivers/gpu/drm/panel/panel-raydium-rm692e5.c