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/display/drm_dsc_helper.h> 13 #include <drm/drm_mipi_dsi.h> 14 #include <drm/drm_modes.h> 15 #include <drm/drm_panel.h> 16 17 #include <video/mipi_display.h> 18 19 struct visionox_vtdr6130 { 20 struct drm_panel panel; 21 struct drm_dsc_config dsc; 22 struct mipi_dsi_device *dsi; 23 struct gpio_desc *reset_gpio; 24 struct regulator_bulk_data *supplies; 25 }; 26 27 static const struct regulator_bulk_data visionox_vtdr6130_supplies[] = { 28 { .supply = "vddio" }, 29 { .supply = "vci" }, 30 { .supply = "vdd" }, 31 }; 32 33 static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel) 34 { 35 return container_of(panel, struct visionox_vtdr6130, panel); 36 } 37 38 static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx) 39 { 40 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 41 usleep_range(10000, 11000); 42 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 43 usleep_range(10000, 11000); 44 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 45 usleep_range(10000, 11000); 46 } 47 48 static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx) 49 { 50 struct mipi_dsi_device *dsi = ctx->dsi; 51 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 52 struct drm_dsc_picture_parameter_set pps; 53 54 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 55 56 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x01); 57 58 mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK); 59 60 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 61 MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20); 62 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 63 MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 64 0x00); 65 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x59, 0x09); 66 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6c, 0x01); 67 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x00); 68 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x01); 69 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x12, 0x00, 0x00, 0xab, 70 0x30, 0x80, 0x09, 0x60, 0x04, 0x38, 0x00, 71 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00, 72 0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 73 0x07, 0x00, 0x0c, 0x02, 0x77, 0x02, 0x8b, 74 0x18, 0x00, 0x10, 0xf0, 0x07, 0x10, 0x20, 75 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e, 0x1c, 76 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 77 0x77, 0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 78 0x22, 0x00, 0x2a, 0x40, 0x2a, 0xbe, 0x3a, 79 0xfc, 0x3a, 0xfa, 0x3a, 0xf8, 0x3b, 0x38, 80 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b, 81 0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 82 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); 83 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xaa, 0x10); 84 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb1, 0x01, 0x38, 0x00, 0x14, 85 0x00, 0x1c, 0x00, 0x01, 0x66, 0x00, 0x14, 86 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14, 87 0x05, 0xcc, 0x00); 88 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xaa, 0x13); 89 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xce, 0x09, 0x11, 0x09, 0x11, 90 0x08, 0xc1, 0x07, 0xfa, 0x05, 0xa4, 0x00, 91 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c, 92 0x00, 0x0c, 0x04, 0x00, 0x35); 93 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xaa, 0x14); 94 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, 0x03, 0x33); 95 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb4, 0x00, 0x33, 0x00, 0x00, 96 0x00, 0x3e, 0x00, 0x00, 0x00, 0x3e, 0x00, 97 0x00); 98 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb5, 0x00, 0x09, 0x09, 0x09, 99 0x09, 0x09, 0x09, 0x06, 0x01); 100 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb9, 0x00, 0x00, 0x08, 0x09, 101 0x09, 0x09); 102 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbc, 0x10, 0x00, 0x00, 0x06, 103 0x11, 0x09, 0x3b, 0x09, 0x47, 0x09, 0x47, 104 0x00); 105 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbe, 0x10, 0x10, 0x00, 0x08, 106 0x22, 0x09, 0x19, 0x09, 0x25, 0x09, 0x25, 107 0x00); 108 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x5a, 0x80); 109 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x14); 110 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfa, 0x08, 0x08, 0x08); 111 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x5a, 0x81); 112 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x05); 113 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0x0f); 114 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xaa, 0x00); 115 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x5a, 0x82); 116 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf9, 0x00); 117 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x51, 0x83); 118 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x04); 119 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x00); 120 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x5a, 0x00); 121 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x01); 122 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x9a); 123 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0x5a, 0x00); 124 125 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); 126 mipi_dsi_msleep(&dsi_ctx, 120); 127 128 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); 129 mipi_dsi_msleep(&dsi_ctx, 20); 130 131 drm_dsc_pps_payload_pack(&pps, dsi->dsc); 132 mipi_dsi_picture_parameter_set_multi(&dsi_ctx, &pps); 133 134 return dsi_ctx.accum_err; 135 } 136 137 static void visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx) 138 { 139 struct mipi_dsi_device *dsi = ctx->dsi; 140 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 141 142 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 143 144 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); 145 mipi_dsi_msleep(&dsi_ctx, 20); 146 147 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); 148 mipi_dsi_msleep(&dsi_ctx, 120); 149 } 150 151 static int visionox_vtdr6130_prepare(struct drm_panel *panel) 152 { 153 struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel); 154 int ret; 155 156 ret = regulator_bulk_enable(ARRAY_SIZE(visionox_vtdr6130_supplies), 157 ctx->supplies); 158 if (ret < 0) 159 return ret; 160 161 visionox_vtdr6130_reset(ctx); 162 163 ret = visionox_vtdr6130_on(ctx); 164 if (ret < 0) { 165 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 166 regulator_bulk_disable(ARRAY_SIZE(visionox_vtdr6130_supplies), 167 ctx->supplies); 168 return ret; 169 } 170 171 return 0; 172 } 173 174 static int visionox_vtdr6130_unprepare(struct drm_panel *panel) 175 { 176 struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel); 177 178 visionox_vtdr6130_off(ctx); 179 180 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 181 182 regulator_bulk_disable(ARRAY_SIZE(visionox_vtdr6130_supplies), 183 ctx->supplies); 184 185 return 0; 186 } 187 188 static const struct drm_display_mode visionox_vtdr6130_mode = { 189 .clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000, 190 .hdisplay = 1080, 191 .hsync_start = 1080 + 20, 192 .hsync_end = 1080 + 20 + 2, 193 .htotal = 1080 + 20 + 2 + 20, 194 .vdisplay = 2400, 195 .vsync_start = 2400 + 20, 196 .vsync_end = 2400 + 20 + 2, 197 .vtotal = 2400 + 20 + 2 + 18, 198 .width_mm = 71, 199 .height_mm = 157, 200 }; 201 202 static int visionox_vtdr6130_get_modes(struct drm_panel *panel, 203 struct drm_connector *connector) 204 { 205 struct drm_display_mode *mode; 206 207 mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_mode); 208 if (!mode) 209 return -ENOMEM; 210 211 drm_mode_set_name(mode); 212 213 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 214 connector->display_info.width_mm = mode->width_mm; 215 connector->display_info.height_mm = mode->height_mm; 216 drm_mode_probed_add(connector, mode); 217 218 return 1; 219 } 220 221 static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = { 222 .prepare = visionox_vtdr6130_prepare, 223 .unprepare = visionox_vtdr6130_unprepare, 224 .get_modes = visionox_vtdr6130_get_modes, 225 }; 226 227 static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl) 228 { 229 struct mipi_dsi_device *dsi = bl_get_data(bl); 230 u16 brightness = backlight_get_brightness(bl); 231 232 return mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 233 } 234 235 static const struct backlight_ops visionox_vtdr6130_bl_ops = { 236 .update_status = visionox_vtdr6130_bl_update_status, 237 }; 238 239 static struct backlight_device * 240 visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi) 241 { 242 struct device *dev = &dsi->dev; 243 const struct backlight_properties props = { 244 .type = BACKLIGHT_RAW, 245 .brightness = 4095, 246 .max_brightness = 4095, 247 }; 248 249 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 250 &visionox_vtdr6130_bl_ops, &props); 251 } 252 253 static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi) 254 { 255 struct device *dev = &dsi->dev; 256 struct visionox_vtdr6130 *ctx; 257 int ret; 258 259 ctx = devm_drm_panel_alloc(dev, struct visionox_vtdr6130, panel, 260 &visionox_vtdr6130_panel_funcs, 261 DRM_MODE_CONNECTOR_DSI); 262 if (IS_ERR(ctx)) 263 return PTR_ERR(ctx); 264 265 ret = devm_regulator_bulk_get_const(&dsi->dev, 266 ARRAY_SIZE(visionox_vtdr6130_supplies), 267 visionox_vtdr6130_supplies, 268 &ctx->supplies); 269 if (ret < 0) 270 return ret; 271 272 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); 273 if (IS_ERR(ctx->reset_gpio)) 274 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 275 "Failed to get reset-gpios\n"); 276 277 ctx->dsi = dsi; 278 mipi_dsi_set_drvdata(dsi, ctx); 279 280 ctx->dsc.dsc_version_major = 0x1; 281 ctx->dsc.dsc_version_minor = 0x2; 282 ctx->dsc.slice_height = 40; 283 ctx->dsc.slice_width = 540; 284 ctx->dsc.slice_count = 2; 285 ctx->dsc.bits_per_component = 8; 286 ctx->dsc.bits_per_pixel = 8 << 4; 287 ctx->dsc.block_pred_enable = true; 288 289 dsi->dsc = &ctx->dsc; 290 dsi->lanes = 4; 291 dsi->format = MIPI_DSI_FMT_RGB888; 292 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET | 293 MIPI_DSI_CLOCK_NON_CONTINUOUS; 294 ctx->panel.prepare_prev_first = true; 295 296 ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi); 297 if (IS_ERR(ctx->panel.backlight)) 298 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 299 "Failed to create backlight\n"); 300 301 ret = devm_drm_panel_add(dev, &ctx->panel); 302 if (ret) 303 return ret; 304 305 return devm_mipi_dsi_attach(dev, dsi); 306 } 307 308 static const struct of_device_id visionox_vtdr6130_of_match[] = { 309 { .compatible = "visionox,vtdr6130" }, 310 { /* sentinel */ } 311 }; 312 MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match); 313 314 static struct mipi_dsi_driver visionox_vtdr6130_driver = { 315 .probe = visionox_vtdr6130_probe, 316 .driver = { 317 .name = "panel-visionox-vtdr6130", 318 .of_match_table = visionox_vtdr6130_of_match, 319 }, 320 }; 321 module_mipi_dsi_driver(visionox_vtdr6130_driver); 322 323 MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>"); 324 MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel"); 325 MODULE_LICENSE("GPL"); 326