1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech> 3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: 4 * Copyright (c) 2020, The Linux Foundation. All rights reserved. 5 */ 6 7 #include <linux/delay.h> 8 #include <linux/gpio/consumer.h> 9 #include <linux/module.h> 10 #include <linux/of.h> 11 #include <linux/regulator/consumer.h> 12 #include <linux/backlight.h> 13 14 #include <video/mipi_display.h> 15 16 #include <drm/drm_mipi_dsi.h> 17 #include <drm/drm_modes.h> 18 #include <drm/drm_panel.h> 19 20 struct sofef00_panel { 21 struct drm_panel panel; 22 struct mipi_dsi_device *dsi; 23 struct regulator *supply; 24 struct gpio_desc *reset_gpio; 25 const struct drm_display_mode *mode; 26 bool prepared; 27 }; 28 29 static inline 30 struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel) 31 { 32 return container_of(panel, struct sofef00_panel, panel); 33 } 34 35 static void sofef00_panel_reset(struct sofef00_panel *ctx) 36 { 37 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 38 usleep_range(5000, 6000); 39 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 40 usleep_range(2000, 3000); 41 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 42 usleep_range(12000, 13000); 43 } 44 45 static int sofef00_panel_on(struct sofef00_panel *ctx) 46 { 47 struct mipi_dsi_device *dsi = ctx->dsi; 48 struct device *dev = &dsi->dev; 49 int ret; 50 51 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 52 53 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 54 if (ret < 0) { 55 dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 56 return ret; 57 } 58 usleep_range(10000, 11000); 59 60 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a); 61 62 ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); 63 if (ret < 0) { 64 dev_err(dev, "Failed to set tear on: %d\n", ret); 65 return ret; 66 } 67 68 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5); 69 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a); 70 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x07); 71 mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x12); 72 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5); 73 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20); 74 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00); 75 76 ret = mipi_dsi_dcs_set_display_on(dsi); 77 if (ret < 0) { 78 dev_err(dev, "Failed to set display on: %d\n", ret); 79 return ret; 80 } 81 82 return 0; 83 } 84 85 static int sofef00_panel_off(struct sofef00_panel *ctx) 86 { 87 struct mipi_dsi_device *dsi = ctx->dsi; 88 struct device *dev = &dsi->dev; 89 int ret; 90 91 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 92 93 ret = mipi_dsi_dcs_set_display_off(dsi); 94 if (ret < 0) { 95 dev_err(dev, "Failed to set display off: %d\n", ret); 96 return ret; 97 } 98 msleep(40); 99 100 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 101 if (ret < 0) { 102 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 103 return ret; 104 } 105 msleep(160); 106 107 return 0; 108 } 109 110 static int sofef00_panel_prepare(struct drm_panel *panel) 111 { 112 struct sofef00_panel *ctx = to_sofef00_panel(panel); 113 struct device *dev = &ctx->dsi->dev; 114 int ret; 115 116 if (ctx->prepared) 117 return 0; 118 119 ret = regulator_enable(ctx->supply); 120 if (ret < 0) { 121 dev_err(dev, "Failed to enable regulator: %d\n", ret); 122 return ret; 123 } 124 125 sofef00_panel_reset(ctx); 126 127 ret = sofef00_panel_on(ctx); 128 if (ret < 0) { 129 dev_err(dev, "Failed to initialize panel: %d\n", ret); 130 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 131 return ret; 132 } 133 134 ctx->prepared = true; 135 return 0; 136 } 137 138 static int sofef00_panel_unprepare(struct drm_panel *panel) 139 { 140 struct sofef00_panel *ctx = to_sofef00_panel(panel); 141 struct device *dev = &ctx->dsi->dev; 142 int ret; 143 144 if (!ctx->prepared) 145 return 0; 146 147 ret = sofef00_panel_off(ctx); 148 if (ret < 0) 149 dev_err(dev, "Failed to un-initialize panel: %d\n", ret); 150 151 regulator_disable(ctx->supply); 152 153 ctx->prepared = false; 154 return 0; 155 } 156 157 static const struct drm_display_mode enchilada_panel_mode = { 158 .clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000, 159 .hdisplay = 1080, 160 .hsync_start = 1080 + 112, 161 .hsync_end = 1080 + 112 + 16, 162 .htotal = 1080 + 112 + 16 + 36, 163 .vdisplay = 2280, 164 .vsync_start = 2280 + 36, 165 .vsync_end = 2280 + 36 + 8, 166 .vtotal = 2280 + 36 + 8 + 12, 167 .width_mm = 68, 168 .height_mm = 145, 169 }; 170 171 static const struct drm_display_mode fajita_panel_mode = { 172 .clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000, 173 .hdisplay = 1080, 174 .hsync_start = 1080 + 72, 175 .hsync_end = 1080 + 72 + 16, 176 .htotal = 1080 + 72 + 16 + 36, 177 .vdisplay = 2340, 178 .vsync_start = 2340 + 32, 179 .vsync_end = 2340 + 32 + 4, 180 .vtotal = 2340 + 32 + 4 + 18, 181 .width_mm = 68, 182 .height_mm = 145, 183 }; 184 185 static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector) 186 { 187 struct drm_display_mode *mode; 188 struct sofef00_panel *ctx = to_sofef00_panel(panel); 189 190 mode = drm_mode_duplicate(connector->dev, ctx->mode); 191 if (!mode) 192 return -ENOMEM; 193 194 drm_mode_set_name(mode); 195 196 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 197 connector->display_info.width_mm = mode->width_mm; 198 connector->display_info.height_mm = mode->height_mm; 199 drm_mode_probed_add(connector, mode); 200 201 return 1; 202 } 203 204 static const struct drm_panel_funcs sofef00_panel_panel_funcs = { 205 .prepare = sofef00_panel_prepare, 206 .unprepare = sofef00_panel_unprepare, 207 .get_modes = sofef00_panel_get_modes, 208 }; 209 210 static int sofef00_panel_bl_update_status(struct backlight_device *bl) 211 { 212 struct mipi_dsi_device *dsi = bl_get_data(bl); 213 int err; 214 u16 brightness = (u16)backlight_get_brightness(bl); 215 216 err = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 217 if (err < 0) 218 return err; 219 220 return 0; 221 } 222 223 static const struct backlight_ops sofef00_panel_bl_ops = { 224 .update_status = sofef00_panel_bl_update_status, 225 }; 226 227 static struct backlight_device * 228 sofef00_create_backlight(struct mipi_dsi_device *dsi) 229 { 230 struct device *dev = &dsi->dev; 231 const struct backlight_properties props = { 232 .type = BACKLIGHT_PLATFORM, 233 .brightness = 1023, 234 .max_brightness = 1023, 235 }; 236 237 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 238 &sofef00_panel_bl_ops, &props); 239 } 240 241 static int sofef00_panel_probe(struct mipi_dsi_device *dsi) 242 { 243 struct device *dev = &dsi->dev; 244 struct sofef00_panel *ctx; 245 int ret; 246 247 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 248 if (!ctx) 249 return -ENOMEM; 250 251 ctx->mode = of_device_get_match_data(dev); 252 253 if (!ctx->mode) { 254 dev_err(dev, "Missing device mode\n"); 255 return -ENODEV; 256 } 257 258 ctx->supply = devm_regulator_get(dev, "vddio"); 259 if (IS_ERR(ctx->supply)) 260 return dev_err_probe(dev, PTR_ERR(ctx->supply), 261 "Failed to get vddio regulator\n"); 262 263 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 264 if (IS_ERR(ctx->reset_gpio)) 265 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 266 "Failed to get reset-gpios\n"); 267 268 ctx->dsi = dsi; 269 mipi_dsi_set_drvdata(dsi, ctx); 270 271 dsi->lanes = 4; 272 dsi->format = MIPI_DSI_FMT_RGB888; 273 274 drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs, 275 DRM_MODE_CONNECTOR_DSI); 276 277 ctx->panel.backlight = sofef00_create_backlight(dsi); 278 if (IS_ERR(ctx->panel.backlight)) 279 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 280 "Failed to create backlight\n"); 281 282 drm_panel_add(&ctx->panel); 283 284 ret = mipi_dsi_attach(dsi); 285 if (ret < 0) { 286 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 287 drm_panel_remove(&ctx->panel); 288 return ret; 289 } 290 291 return 0; 292 } 293 294 static void sofef00_panel_remove(struct mipi_dsi_device *dsi) 295 { 296 struct sofef00_panel *ctx = mipi_dsi_get_drvdata(dsi); 297 int ret; 298 299 ret = mipi_dsi_detach(dsi); 300 if (ret < 0) 301 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 302 303 drm_panel_remove(&ctx->panel); 304 } 305 306 static const struct of_device_id sofef00_panel_of_match[] = { 307 { // OnePlus 6 / enchilada 308 .compatible = "samsung,sofef00", 309 .data = &enchilada_panel_mode, 310 }, 311 { // OnePlus 6T / fajita 312 .compatible = "samsung,s6e3fc2x01", 313 .data = &fajita_panel_mode, 314 }, 315 { /* sentinel */ } 316 }; 317 MODULE_DEVICE_TABLE(of, sofef00_panel_of_match); 318 319 static struct mipi_dsi_driver sofef00_panel_driver = { 320 .probe = sofef00_panel_probe, 321 .remove = sofef00_panel_remove, 322 .driver = { 323 .name = "panel-oneplus6", 324 .of_match_table = sofef00_panel_of_match, 325 }, 326 }; 327 328 module_mipi_dsi_driver(sofef00_panel_driver); 329 330 MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>"); 331 MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones"); 332 MODULE_LICENSE("GPL v2"); 333