1 //SPDX-License-Identifier: GPL-2.0-only 2 //Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. 3 4 #include <linux/backlight.h> 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_mipi_dsi.h> 12 #include <drm/drm_probe_helper.h> 13 #include <drm/drm_modes.h> 14 #include <drm/drm_panel.h> 15 #include <drm/display/drm_dsc.h> 16 #include <drm/display/drm_dsc_helper.h> 17 18 #include <video/mipi_display.h> 19 20 struct visionox_r66451 { 21 struct drm_panel panel; 22 struct mipi_dsi_device *dsi; 23 struct gpio_desc *reset_gpio; 24 struct regulator_bulk_data supplies[2]; 25 }; 26 27 static inline struct visionox_r66451 *to_visionox_r66451(struct drm_panel *panel) 28 { 29 return container_of(panel, struct visionox_r66451, panel); 30 } 31 32 static void visionox_r66451_reset(struct visionox_r66451 *ctx) 33 { 34 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 35 usleep_range(10000, 10100); 36 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 37 usleep_range(10000, 10100); 38 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 39 usleep_range(10000, 10100); 40 } 41 42 static int visionox_r66451_on(struct visionox_r66451 *ctx) 43 { 44 struct mipi_dsi_device *dsi = ctx->dsi; 45 46 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 47 48 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00); 49 mipi_dsi_dcs_write_seq(dsi, 0xc2, 50 0x09, 0x24, 0x0c, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 51 0x09, 0x3c); 52 mipi_dsi_dcs_write_seq(dsi, 0xd7, 53 0x00, 0xb9, 0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a, 54 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 55 0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a); 56 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80); 57 mipi_dsi_dcs_write_seq(dsi, 0xde, 58 0x40, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 59 0x10, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x02, 0x00, 0x00); 60 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04); 61 mipi_dsi_dcs_write_seq(dsi, 0xe8, 0x00, 0x02); 62 mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x00, 0x08); 63 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00); 64 mipi_dsi_dcs_write_seq(dsi, 0xc4, 65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 66 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x32); 67 mipi_dsi_dcs_write_seq(dsi, 0xcf, 68 0x64, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 69 0x00, 0x0b, 0x77, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 70 0x02, 0x02, 0x02, 0x02, 0x02, 0x03); 71 mipi_dsi_dcs_write_seq(dsi, 0xd3, 72 0x45, 0x00, 0x00, 0x01, 0x13, 0x15, 0x00, 0x15, 0x07, 73 0x0f, 0x77, 0x77, 0x77, 0x37, 0xb2, 0x11, 0x00, 0xa0, 74 0x3c, 0x9c); 75 mipi_dsi_dcs_write_seq(dsi, 0xd7, 76 0x00, 0xb9, 0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a, 77 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 78 0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a); 79 mipi_dsi_dcs_write_seq(dsi, 0xd8, 80 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 81 0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a, 82 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 83 0x00, 0x0a, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 85 0x00, 0x32, 0x00, 0x0a, 0x00, 0x22); 86 mipi_dsi_dcs_write_seq(dsi, 0xdf, 87 0x50, 0x42, 0x58, 0x81, 0x2d, 0x00, 0x00, 0x00, 0x00, 88 0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 89 0x00, 0x00, 0x01, 0x0f, 0xff, 0xd4, 0x0e, 0x00, 0x00, 90 0x00, 0x00, 0x00, 0x00, 0x0f, 0x53, 0xf1, 0x00, 0x00, 91 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); 92 mipi_dsi_dcs_write_seq(dsi, 0xf7, 0x01); 93 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80); 94 mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x34, 0xb4, 0x00, 0x00, 0x00, 0x39, 0x04, 0x09, 0x34); 95 mipi_dsi_dcs_write_seq(dsi, 0xe6, 0x00); 96 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04); 97 mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x40); 98 mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x50, 0x00, 0x00, 0x00, 0x00); 99 mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x11); 100 mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x01, 0x00, 0x00, 0x00, 0x01); 101 mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x00, 0x02); 102 mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x19); 103 mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x42); 104 mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); 105 mipi_dsi_dcs_set_column_address(dsi, 0, 1080 - 1); 106 mipi_dsi_dcs_set_page_address(dsi, 0, 2340 - 1); 107 108 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 109 110 return 0; 111 } 112 113 static int visionox_r66451_off(struct visionox_r66451 *ctx) 114 { 115 ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 116 return 0; 117 } 118 119 static int visionox_r66451_prepare(struct drm_panel *panel) 120 { 121 struct visionox_r66451 *ctx = to_visionox_r66451(panel); 122 struct mipi_dsi_device *dsi = ctx->dsi; 123 struct device *dev = &dsi->dev; 124 int ret; 125 126 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), 127 ctx->supplies); 128 if (ret < 0) 129 return ret; 130 131 visionox_r66451_reset(ctx); 132 133 ret = visionox_r66451_on(ctx); 134 if (ret < 0) { 135 dev_err(dev, "Failed to initialize panel: %d\n", ret); 136 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 137 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 138 return ret; 139 } 140 141 mipi_dsi_compression_mode(ctx->dsi, true); 142 143 return 0; 144 } 145 146 static int visionox_r66451_unprepare(struct drm_panel *panel) 147 { 148 struct visionox_r66451 *ctx = to_visionox_r66451(panel); 149 struct device *dev = &ctx->dsi->dev; 150 int ret; 151 152 ret = visionox_r66451_off(ctx); 153 if (ret < 0) 154 dev_err(dev, "Failed to un-initialize panel: %d\n", ret); 155 156 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 157 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 158 159 return 0; 160 } 161 162 static const struct drm_display_mode visionox_r66451_mode = { 163 .clock = 345830, 164 .hdisplay = 1080, 165 .hsync_start = 1175, 166 .hsync_end = 1176, 167 .htotal = 1216, 168 .vdisplay = 2340, 169 .vsync_start = 2365, 170 .vsync_end = 2366, 171 .vtotal = 2370, 172 .width_mm = 0, 173 .height_mm = 0, 174 .type = DRM_MODE_TYPE_DRIVER, 175 }; 176 177 static int visionox_r66451_enable(struct drm_panel *panel) 178 { 179 struct visionox_r66451 *ctx = to_visionox_r66451(panel); 180 struct mipi_dsi_device *dsi = ctx->dsi; 181 struct drm_dsc_picture_parameter_set pps; 182 int ret; 183 184 if (!dsi->dsc) { 185 dev_err(&dsi->dev, "DSC not attached to DSI\n"); 186 return -ENODEV; 187 } 188 189 drm_dsc_pps_payload_pack(&pps, dsi->dsc); 190 ret = mipi_dsi_picture_parameter_set(dsi, &pps); 191 if (ret) { 192 dev_err(&dsi->dev, "Failed to set PPS\n"); 193 return ret; 194 } 195 196 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 197 if (ret < 0) { 198 dev_err(&dsi->dev, "Failed to exit sleep mode: %d\n", ret); 199 return ret; 200 } 201 msleep(120); 202 203 ret = mipi_dsi_dcs_set_display_on(dsi); 204 if (ret < 0) { 205 dev_err(&dsi->dev, "Failed on set display on: %d\n", ret); 206 return ret; 207 } 208 msleep(20); 209 210 return 0; 211 } 212 213 static int visionox_r66451_disable(struct drm_panel *panel) 214 { 215 struct visionox_r66451 *ctx = to_visionox_r66451(panel); 216 struct mipi_dsi_device *dsi = ctx->dsi; 217 struct device *dev = &dsi->dev; 218 int ret; 219 220 ret = mipi_dsi_dcs_set_display_off(dsi); 221 if (ret < 0) { 222 dev_err(dev, "Failed to set display off: %d\n", ret); 223 return ret; 224 } 225 msleep(20); 226 227 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 228 if (ret < 0) { 229 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 230 return ret; 231 } 232 msleep(120); 233 234 return 0; 235 } 236 237 static int visionox_r66451_get_modes(struct drm_panel *panel, 238 struct drm_connector *connector) 239 { 240 drm_connector_helper_get_modes_fixed(connector, &visionox_r66451_mode); 241 return 1; 242 } 243 244 static const struct drm_panel_funcs visionox_r66451_funcs = { 245 .prepare = visionox_r66451_prepare, 246 .unprepare = visionox_r66451_unprepare, 247 .get_modes = visionox_r66451_get_modes, 248 .enable = visionox_r66451_enable, 249 .disable = visionox_r66451_disable, 250 }; 251 252 static int visionox_r66451_bl_update_status(struct backlight_device *bl) 253 { 254 struct mipi_dsi_device *dsi = bl_get_data(bl); 255 u16 brightness = backlight_get_brightness(bl); 256 257 return mipi_dsi_dcs_set_display_brightness(dsi, brightness); 258 } 259 260 static const struct backlight_ops visionox_r66451_bl_ops = { 261 .update_status = visionox_r66451_bl_update_status, 262 }; 263 264 static struct backlight_device * 265 visionox_r66451_create_backlight(struct mipi_dsi_device *dsi) 266 { 267 struct device *dev = &dsi->dev; 268 const struct backlight_properties props = { 269 .type = BACKLIGHT_RAW, 270 .brightness = 255, 271 .max_brightness = 4095, 272 }; 273 274 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 275 &visionox_r66451_bl_ops, &props); 276 } 277 278 static int visionox_r66451_probe(struct mipi_dsi_device *dsi) 279 { 280 struct device *dev = &dsi->dev; 281 struct visionox_r66451 *ctx; 282 struct drm_dsc_config *dsc; 283 int ret = 0; 284 285 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 286 if (!ctx) 287 return -ENOMEM; 288 289 dsc = devm_kzalloc(dev, sizeof(*dsc), GFP_KERNEL); 290 if (!dsc) 291 return -ENOMEM; 292 293 /* Set DSC params */ 294 dsc->dsc_version_major = 0x1; 295 dsc->dsc_version_minor = 0x2; 296 297 dsc->slice_height = 20; 298 dsc->slice_width = 540; 299 dsc->slice_count = 2; 300 dsc->bits_per_component = 8; 301 dsc->bits_per_pixel = 8 << 4; 302 dsc->block_pred_enable = true; 303 304 dsi->dsc = dsc; 305 306 ctx->supplies[0].supply = "vddio"; 307 ctx->supplies[1].supply = "vdd"; 308 309 ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies), 310 ctx->supplies); 311 312 if (ret < 0) 313 return ret; 314 315 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); 316 if (IS_ERR(ctx->reset_gpio)) 317 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset-gpios\n"); 318 319 ctx->dsi = dsi; 320 mipi_dsi_set_drvdata(dsi, ctx); 321 322 dsi->lanes = 4; 323 dsi->format = MIPI_DSI_FMT_RGB888; 324 dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS; 325 326 drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI); 327 ctx->panel.backlight = visionox_r66451_create_backlight(dsi); 328 if (IS_ERR(ctx->panel.backlight)) 329 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 330 "Failed to create backlight\n"); 331 332 drm_panel_add(&ctx->panel); 333 334 ret = mipi_dsi_attach(dsi); 335 if (ret < 0) { 336 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 337 drm_panel_remove(&ctx->panel); 338 } 339 340 return ret; 341 } 342 343 static void visionox_r66451_remove(struct mipi_dsi_device *dsi) 344 { 345 struct visionox_r66451 *ctx = mipi_dsi_get_drvdata(dsi); 346 int ret; 347 348 ret = mipi_dsi_detach(dsi); 349 if (ret < 0) 350 dev_err(&dsi->dev, "Failed to detach DSI host: %d\n", ret); 351 352 drm_panel_remove(&ctx->panel); 353 } 354 355 static const struct of_device_id visionox_r66451_of_match[] = { 356 {.compatible = "visionox,r66451"}, 357 { /*sentinel*/ } 358 }; 359 MODULE_DEVICE_TABLE(of, visionox_r66451_of_match); 360 361 static struct mipi_dsi_driver visionox_r66451_driver = { 362 .probe = visionox_r66451_probe, 363 .remove = visionox_r66451_remove, 364 .driver = { 365 .name = "panel-visionox-r66451", 366 .of_match_table = visionox_r66451_of_match, 367 }, 368 }; 369 370 module_mipi_dsi_driver(visionox_r66451_driver); 371 372 MODULE_AUTHOR("Jessica Zhang <quic_jesszhan@quicinc.com>"); 373 MODULE_DESCRIPTION("Panel driver for the Visionox R66451 AMOLED DSI panel"); 374 MODULE_LICENSE("GPL"); 375