1// SPDX-License-Identifier: GPL-2.0-only
2// Copyright (c) 2023, Linaro Limited
3
4#include <linux/backlight.h>
5#include <linux/delay.h>
6#include <linux/gpio/consumer.h>
7#include <linux/regulator/consumer.h>
8#include <linux/module.h>
9#include <linux/of.h>
10
11#include <drm/display/drm_dsc.h>
12#include <drm/drm_mipi_dsi.h>
13#include <drm/drm_modes.h>
14#include <drm/drm_panel.h>
15
16#include <video/mipi_display.h>
17
18struct visionox_vtdr6130 {
19 struct drm_panel panel;
20 struct mipi_dsi_device *dsi;
21 struct gpio_desc *reset_gpio;
22 struct regulator_bulk_data supplies[3];
23};
24
25static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
26{
27 return container_of(panel, struct visionox_vtdr6130, panel);
28}
29
30static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
31{
32 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0);
33 usleep_range(min: 10000, max: 11000);
34 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
35 usleep_range(min: 10000, max: 11000);
36 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0);
37 usleep_range(min: 10000, max: 11000);
38}
39
40static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
41{
42 struct mipi_dsi_device *dsi = ctx->dsi;
43 struct device *dev = &dsi->dev;
44 int ret;
45
46 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
47
48 ret = mipi_dsi_dcs_set_tear_on(dsi, mode: MIPI_DSI_DCS_TEAR_MODE_VBLANK);
49 if (ret)
50 return ret;
51
52 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
53 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
54 mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
55 mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
56 mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
57 mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
58 mipi_dsi_dcs_write_seq(dsi, 0x70,
59 0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
60 0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
61 0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
62 0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
63 0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
64 0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
65 0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
66 0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
67 0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
68 0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
69 0x00, 0x00, 0x00, 0x00);
70 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
71 mipi_dsi_dcs_write_seq(dsi, 0xb1,
72 0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
73 0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
74 0x05, 0xcc, 0x00);
75 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
76 mipi_dsi_dcs_write_seq(dsi, 0xce,
77 0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
78 0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
79 0x00, 0x0c, 0x04, 0x00, 0x35);
80 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
81 mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
82 mipi_dsi_dcs_write_seq(dsi, 0xb4,
83 0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
84 0x3e, 0x00, 0x00);
85 mipi_dsi_dcs_write_seq(dsi, 0xb5,
86 0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
87 mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
88 mipi_dsi_dcs_write_seq(dsi, 0xbc,
89 0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
90 0x09, 0x47, 0x00);
91 mipi_dsi_dcs_write_seq(dsi, 0xbe,
92 0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
93 0x09, 0x25, 0x00);
94 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
95 mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
96 mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
97 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
98 mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
99 mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
100 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
101 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
102 mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
103 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
104 mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
105 mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
106 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
107 mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
108 mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
109 mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
110
111 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
112 if (ret < 0) {
113 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
114 return ret;
115 }
116 msleep(msecs: 120);
117
118 ret = mipi_dsi_dcs_set_display_on(dsi);
119 if (ret < 0) {
120 dev_err(dev, "Failed to set display on: %d\n", ret);
121 return ret;
122 }
123 msleep(msecs: 20);
124
125 return 0;
126}
127
128static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
129{
130 struct mipi_dsi_device *dsi = ctx->dsi;
131 struct device *dev = &dsi->dev;
132 int ret;
133
134 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
135
136 ret = mipi_dsi_dcs_set_display_off(dsi);
137 if (ret < 0) {
138 dev_err(dev, "Failed to set display off: %d\n", ret);
139 return ret;
140 }
141 msleep(msecs: 20);
142
143 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
144 if (ret < 0) {
145 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
146 return ret;
147 }
148 msleep(msecs: 120);
149
150 return 0;
151}
152
153static int visionox_vtdr6130_prepare(struct drm_panel *panel)
154{
155 struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
156 struct device *dev = &ctx->dsi->dev;
157 int ret;
158
159 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
160 consumers: ctx->supplies);
161 if (ret < 0)
162 return ret;
163
164 visionox_vtdr6130_reset(ctx);
165
166 ret = visionox_vtdr6130_on(ctx);
167 if (ret < 0) {
168 dev_err(dev, "Failed to initialize panel: %d\n", ret);
169 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
170 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies);
171 return ret;
172 }
173
174 return 0;
175}
176
177static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
178{
179 struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
180 struct device *dev = &ctx->dsi->dev;
181 int ret;
182
183 ret = visionox_vtdr6130_off(ctx);
184 if (ret < 0)
185 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
186
187 gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1);
188
189 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), consumers: ctx->supplies);
190
191 return 0;
192}
193
194static const struct drm_display_mode visionox_vtdr6130_mode = {
195 .clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
196 .hdisplay = 1080,
197 .hsync_start = 1080 + 20,
198 .hsync_end = 1080 + 20 + 2,
199 .htotal = 1080 + 20 + 2 + 20,
200 .vdisplay = 2400,
201 .vsync_start = 2400 + 20,
202 .vsync_end = 2400 + 20 + 2,
203 .vtotal = 2400 + 20 + 2 + 18,
204 .width_mm = 71,
205 .height_mm = 157,
206};
207
208static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
209 struct drm_connector *connector)
210{
211 struct drm_display_mode *mode;
212
213 mode = drm_mode_duplicate(dev: connector->dev, mode: &visionox_vtdr6130_mode);
214 if (!mode)
215 return -ENOMEM;
216
217 drm_mode_set_name(mode);
218
219 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
220 connector->display_info.width_mm = mode->width_mm;
221 connector->display_info.height_mm = mode->height_mm;
222 drm_mode_probed_add(connector, mode);
223
224 return 1;
225}
226
227static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = {
228 .prepare = visionox_vtdr6130_prepare,
229 .unprepare = visionox_vtdr6130_unprepare,
230 .get_modes = visionox_vtdr6130_get_modes,
231};
232
233static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
234{
235 struct mipi_dsi_device *dsi = bl_get_data(bl_dev: bl);
236 u16 brightness = backlight_get_brightness(bd: bl);
237
238 return mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
239}
240
241static const struct backlight_ops visionox_vtdr6130_bl_ops = {
242 .update_status = visionox_vtdr6130_bl_update_status,
243};
244
245static struct backlight_device *
246visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
247{
248 struct device *dev = &dsi->dev;
249 const struct backlight_properties props = {
250 .type = BACKLIGHT_RAW,
251 .brightness = 4095,
252 .max_brightness = 4095,
253 };
254
255 return devm_backlight_device_register(dev, name: dev_name(dev), parent: dev, devdata: dsi,
256 ops: &visionox_vtdr6130_bl_ops, props: &props);
257}
258
259static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
260{
261 struct device *dev = &dsi->dev;
262 struct visionox_vtdr6130 *ctx;
263 int ret;
264
265 ctx = devm_kzalloc(dev, size: sizeof(*ctx), GFP_KERNEL);
266 if (!ctx)
267 return -ENOMEM;
268
269 ctx->supplies[0].supply = "vddio";
270 ctx->supplies[1].supply = "vci";
271 ctx->supplies[2].supply = "vdd";
272
273 ret = devm_regulator_bulk_get(dev: &dsi->dev, ARRAY_SIZE(ctx->supplies),
274 consumers: ctx->supplies);
275 if (ret < 0)
276 return ret;
277
278 ctx->reset_gpio = devm_gpiod_get(dev, con_id: "reset", flags: GPIOD_OUT_LOW);
279 if (IS_ERR(ptr: ctx->reset_gpio))
280 return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->reset_gpio),
281 fmt: "Failed to get reset-gpios\n");
282
283 ctx->dsi = dsi;
284 mipi_dsi_set_drvdata(dsi, data: ctx);
285
286 dsi->lanes = 4;
287 dsi->format = MIPI_DSI_FMT_RGB888;
288 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
289 MIPI_DSI_CLOCK_NON_CONTINUOUS;
290 ctx->panel.prepare_prev_first = true;
291
292 drm_panel_init(panel: &ctx->panel, dev, funcs: &visionox_vtdr6130_panel_funcs,
293 DRM_MODE_CONNECTOR_DSI);
294
295 ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
296 if (IS_ERR(ptr: ctx->panel.backlight))
297 return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->panel.backlight),
298 fmt: "Failed to create backlight\n");
299
300 drm_panel_add(panel: &ctx->panel);
301
302 ret = mipi_dsi_attach(dsi);
303 if (ret < 0) {
304 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
305 drm_panel_remove(panel: &ctx->panel);
306 return ret;
307 }
308
309 return 0;
310}
311
312static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
313{
314 struct visionox_vtdr6130 *ctx = mipi_dsi_get_drvdata(dsi);
315 int ret;
316
317 ret = mipi_dsi_detach(dsi);
318 if (ret < 0)
319 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
320
321 drm_panel_remove(panel: &ctx->panel);
322}
323
324static const struct of_device_id visionox_vtdr6130_of_match[] = {
325 { .compatible = "visionox,vtdr6130" },
326 { /* sentinel */ }
327};
328MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
329
330static struct mipi_dsi_driver visionox_vtdr6130_driver = {
331 .probe = visionox_vtdr6130_probe,
332 .remove = visionox_vtdr6130_remove,
333 .driver = {
334 .name = "panel-visionox-vtdr6130",
335 .of_match_table = visionox_vtdr6130_of_match,
336 },
337};
338module_mipi_dsi_driver(visionox_vtdr6130_driver);
339
340MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
341MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
342MODULE_LICENSE("GPL");
343

source code of linux/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c