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) 2013, The Linux Foundation. All rights reserved.
5 * Copyright (c) 2025, Alexander Baransky <sanyapilot496@gmail.com>
6 */
7
8 #include <linux/backlight.h>
9 #include <linux/delay.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13 #include <linux/regulator/consumer.h>
14
15 #include <drm/drm_mipi_dsi.h>
16 #include <drm/drm_modes.h>
17 #include <drm/drm_panel.h>
18
19 struct visionox_g2647fb105 {
20 struct drm_panel panel;
21 struct mipi_dsi_device *dsi;
22 struct gpio_desc *reset_gpio;
23 struct regulator_bulk_data *supplies;
24 };
25
26 static const struct regulator_bulk_data visionox_g2647fb105_supplies[] = {
27 { .supply = "vdd3p3" },
28 { .supply = "vddio" },
29 { .supply = "vsn" },
30 { .supply = "vsp" },
31 };
32
33 static inline
to_visionox_g2647fb105(struct drm_panel * panel)34 struct visionox_g2647fb105 *to_visionox_g2647fb105(struct drm_panel *panel)
35 {
36 return container_of(panel, struct visionox_g2647fb105, panel);
37 }
38
visionox_g2647fb105_reset(struct visionox_g2647fb105 * ctx)39 static void visionox_g2647fb105_reset(struct visionox_g2647fb105 *ctx)
40 {
41 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
42 usleep_range(1000, 2000);
43 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
44 usleep_range(10000, 11000);
45 }
46
visionox_g2647fb105_on(struct visionox_g2647fb105 * ctx)47 static int visionox_g2647fb105_on(struct visionox_g2647fb105 *ctx)
48 {
49 struct mipi_dsi_device *dsi = ctx->dsi;
50 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
51
52 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x04);
53 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
54 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4d, 0x32);
55 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
56 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbe, 0x17);
57 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbf, 0xbb);
58 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0xdd);
59 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc1, 0xff);
60 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
61 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x24);
62 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x03);
63 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
64 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
65 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
66
67 mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
68 mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x0000);
69 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
70 mipi_dsi_msleep(&dsi_ctx, 100);
71
72 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
73
74 return dsi_ctx.accum_err;
75 }
76
visionox_g2647fb105_off(struct visionox_g2647fb105 * ctx)77 static int visionox_g2647fb105_off(struct visionox_g2647fb105 *ctx)
78 {
79 struct mipi_dsi_device *dsi = ctx->dsi;
80 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
81
82 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
83 mipi_dsi_msleep(&dsi_ctx, 50);
84
85 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
86 mipi_dsi_msleep(&dsi_ctx, 20);
87
88 return dsi_ctx.accum_err;
89 }
90
visionox_g2647fb105_prepare(struct drm_panel * panel)91 static int visionox_g2647fb105_prepare(struct drm_panel *panel)
92 {
93 struct visionox_g2647fb105 *ctx = to_visionox_g2647fb105(panel);
94 struct device *dev = &ctx->dsi->dev;
95 int ret;
96
97 ret = regulator_bulk_enable(ARRAY_SIZE(visionox_g2647fb105_supplies), ctx->supplies);
98 if (ret < 0) {
99 dev_err(dev, "Failed to enable regulators: %d\n", ret);
100 return ret;
101 }
102
103 visionox_g2647fb105_reset(ctx);
104
105 ret = visionox_g2647fb105_on(ctx);
106 if (ret < 0) {
107 dev_err(dev, "Failed to initialize panel: %d\n", ret);
108 return ret;
109 }
110
111 return 0;
112 }
113
visionox_g2647fb105_unprepare(struct drm_panel * panel)114 static int visionox_g2647fb105_unprepare(struct drm_panel *panel)
115 {
116 struct visionox_g2647fb105 *ctx = to_visionox_g2647fb105(panel);
117 struct device *dev = &ctx->dsi->dev;
118 int ret;
119
120 ret = visionox_g2647fb105_off(ctx);
121 if (ret < 0)
122 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
123
124 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
125 regulator_bulk_disable(ARRAY_SIZE(visionox_g2647fb105_supplies), ctx->supplies);
126
127 return 0;
128 }
129
130 static const struct drm_display_mode visionox_g2647fb105_mode = {
131 .clock = (1080 + 28 + 4 + 36) * (2340 + 8 + 4 + 4) * 60 / 1000,
132 .hdisplay = 1080,
133 .hsync_start = 1080 + 28,
134 .hsync_end = 1080 + 28 + 4,
135 .htotal = 1080 + 28 + 4 + 36,
136 .vdisplay = 2340,
137 .vsync_start = 2340 + 8,
138 .vsync_end = 2340 + 8 + 4,
139 .vtotal = 2340 + 8 + 4 + 4,
140 .width_mm = 69,
141 .height_mm = 149,
142 };
143
visionox_g2647fb105_get_modes(struct drm_panel * panel,struct drm_connector * connector)144 static int visionox_g2647fb105_get_modes(struct drm_panel *panel,
145 struct drm_connector *connector)
146 {
147 struct drm_display_mode *mode;
148
149 mode = drm_mode_duplicate(connector->dev, &visionox_g2647fb105_mode);
150 if (!mode)
151 return -ENOMEM;
152
153 drm_mode_set_name(mode);
154
155 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
156 connector->display_info.width_mm = mode->width_mm;
157 connector->display_info.height_mm = mode->height_mm;
158 drm_mode_probed_add(connector, mode);
159
160 return 1;
161 }
162
163 static const struct drm_panel_funcs visionox_g2647fb105_panel_funcs = {
164 .prepare = visionox_g2647fb105_prepare,
165 .unprepare = visionox_g2647fb105_unprepare,
166 .get_modes = visionox_g2647fb105_get_modes,
167 };
168
visionox_g2647fb105_bl_update_status(struct backlight_device * bl)169 static int visionox_g2647fb105_bl_update_status(struct backlight_device *bl)
170 {
171 struct mipi_dsi_device *dsi = bl_get_data(bl);
172 u16 brightness = backlight_get_brightness(bl);
173 int ret;
174
175 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
176
177 ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
178 if (ret < 0)
179 return ret;
180
181 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
182
183 return 0;
184 }
185
186 static const struct backlight_ops visionox_g2647fb105_bl_ops = {
187 .update_status = visionox_g2647fb105_bl_update_status,
188 };
189
190 static struct backlight_device *
visionox_g2647fb105_create_backlight(struct mipi_dsi_device * dsi)191 visionox_g2647fb105_create_backlight(struct mipi_dsi_device *dsi)
192 {
193 struct device *dev = &dsi->dev;
194 const struct backlight_properties props = {
195 .type = BACKLIGHT_RAW,
196 .brightness = 1023,
197 .max_brightness = 2047,
198 };
199
200 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
201 &visionox_g2647fb105_bl_ops, &props);
202 }
203
visionox_g2647fb105_probe(struct mipi_dsi_device * dsi)204 static int visionox_g2647fb105_probe(struct mipi_dsi_device *dsi)
205 {
206 struct device *dev = &dsi->dev;
207 struct visionox_g2647fb105 *ctx;
208 int ret;
209
210 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
211 if (!ctx)
212 return -ENOMEM;
213
214 ret = devm_regulator_bulk_get_const(dev,
215 ARRAY_SIZE(visionox_g2647fb105_supplies),
216 visionox_g2647fb105_supplies,
217 &ctx->supplies);
218 if (ret < 0)
219 return dev_err_probe(dev, ret, "Failed to get regulators\n");
220
221 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
222 if (IS_ERR(ctx->reset_gpio))
223 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
224 "Failed to get reset-gpios\n");
225
226 ctx->dsi = dsi;
227 mipi_dsi_set_drvdata(dsi, ctx);
228
229 dsi->lanes = 4;
230 dsi->format = MIPI_DSI_FMT_RGB888;
231 dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
232 MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
233
234 ctx->panel.prepare_prev_first = true;
235
236 drm_panel_init(&ctx->panel, dev, &visionox_g2647fb105_panel_funcs,
237 DRM_MODE_CONNECTOR_DSI);
238 ctx->panel.prepare_prev_first = true;
239
240 ctx->panel.backlight = visionox_g2647fb105_create_backlight(dsi);
241 if (IS_ERR(ctx->panel.backlight))
242 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
243 "Failed to create backlight\n");
244
245 drm_panel_add(&ctx->panel);
246
247 ret = devm_mipi_dsi_attach(dev, dsi);
248 if (ret < 0) {
249 drm_panel_remove(&ctx->panel);
250 return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
251 }
252
253 return 0;
254 }
255
visionox_g2647fb105_remove(struct mipi_dsi_device * dsi)256 static void visionox_g2647fb105_remove(struct mipi_dsi_device *dsi)
257 {
258 struct visionox_g2647fb105 *ctx = mipi_dsi_get_drvdata(dsi);
259 drm_panel_remove(&ctx->panel);
260 }
261
262 static const struct of_device_id visionox_g2647fb105_of_match[] = {
263 { .compatible = "visionox,g2647fb105" },
264 { /* sentinel */ }
265 };
266 MODULE_DEVICE_TABLE(of, visionox_g2647fb105_of_match);
267
268 static struct mipi_dsi_driver visionox_g2647fb105_driver = {
269 .probe = visionox_g2647fb105_probe,
270 .remove = visionox_g2647fb105_remove,
271 .driver = {
272 .name = "panel-visionox-g2647fb105",
273 .of_match_table = visionox_g2647fb105_of_match,
274 },
275 };
276 module_mipi_dsi_driver(visionox_g2647fb105_driver);
277
278 MODULE_AUTHOR("Alexander Baransky <sanyapilot496@gmail.com>");
279 MODULE_DESCRIPTION("DRM driver for Visionox G2647FB105 AMOLED DSI panel");
280 MODULE_LICENSE("GPL");
281