1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com> 4 * 5 * Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree: 6 * https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi 7 */ 8 9 #include <linux/delay.h> 10 #include <linux/gpio/consumer.h> 11 #include <linux/module.h> 12 #include <linux/of.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 jdi_fhd_r63452 { 21 struct drm_panel panel; 22 struct mipi_dsi_device *dsi; 23 struct gpio_desc *reset_gpio; 24 bool prepared; 25 }; 26 27 static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel) 28 { 29 return container_of(panel, struct jdi_fhd_r63452, panel); 30 } 31 32 static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx) 33 { 34 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 35 usleep_range(10000, 11000); 36 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 37 usleep_range(1000, 2000); 38 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 39 usleep_range(10000, 11000); 40 } 41 42 static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx) 43 { 44 struct mipi_dsi_device *dsi = ctx->dsi; 45 struct device *dev = &dsi->dev; 46 int ret; 47 48 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 49 50 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00); 51 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01); 52 mipi_dsi_generic_write_seq(dsi, 0xec, 53 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b, 54 0x13, 0x15, 0x68, 0x0b, 0xb5); 55 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03); 56 57 ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); 58 if (ret < 0) { 59 dev_err(dev, "Failed to set tear on: %d\n", ret); 60 return ret; 61 } 62 63 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00); 64 65 ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77); 66 if (ret < 0) { 67 dev_err(dev, "Failed to set pixel format: %d\n", ret); 68 return ret; 69 } 70 71 ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437); 72 if (ret < 0) { 73 dev_err(dev, "Failed to set column address: %d\n", ret); 74 return ret; 75 } 76 77 ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f); 78 if (ret < 0) { 79 dev_err(dev, "Failed to set page address: %d\n", ret); 80 return ret; 81 } 82 83 ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000); 84 if (ret < 0) { 85 dev_err(dev, "Failed to set tear scanline: %d\n", ret); 86 return ret; 87 } 88 89 ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff); 90 if (ret < 0) { 91 dev_err(dev, "Failed to set display brightness: %d\n", ret); 92 return ret; 93 } 94 95 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24); 96 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00); 97 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00); 98 mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00); 99 100 ret = mipi_dsi_dcs_set_display_on(dsi); 101 if (ret < 0) { 102 dev_err(dev, "Failed to set display on: %d\n", ret); 103 return ret; 104 } 105 msleep(20); 106 107 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 108 if (ret < 0) { 109 dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 110 return ret; 111 } 112 msleep(80); 113 114 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04); 115 mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00); 116 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11); 117 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03); 118 119 return 0; 120 } 121 122 static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx) 123 { 124 struct mipi_dsi_device *dsi = ctx->dsi; 125 struct device *dev = &dsi->dev; 126 int ret; 127 128 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 129 130 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00); 131 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01); 132 mipi_dsi_generic_write_seq(dsi, 0xec, 133 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b, 134 0x13, 0x15, 0x68, 0x0b, 0x95); 135 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03); 136 137 ret = mipi_dsi_dcs_set_display_off(dsi); 138 if (ret < 0) { 139 dev_err(dev, "Failed to set display off: %d\n", ret); 140 return ret; 141 } 142 usleep_range(2000, 3000); 143 144 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 145 if (ret < 0) { 146 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 147 return ret; 148 } 149 msleep(120); 150 151 return 0; 152 } 153 154 static int jdi_fhd_r63452_prepare(struct drm_panel *panel) 155 { 156 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel); 157 struct device *dev = &ctx->dsi->dev; 158 int ret; 159 160 if (ctx->prepared) 161 return 0; 162 163 jdi_fhd_r63452_reset(ctx); 164 165 ret = jdi_fhd_r63452_on(ctx); 166 if (ret < 0) { 167 dev_err(dev, "Failed to initialize panel: %d\n", ret); 168 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 169 return ret; 170 } 171 172 ctx->prepared = true; 173 return 0; 174 } 175 176 static int jdi_fhd_r63452_unprepare(struct drm_panel *panel) 177 { 178 struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel); 179 struct device *dev = &ctx->dsi->dev; 180 int ret; 181 182 if (!ctx->prepared) 183 return 0; 184 185 ret = jdi_fhd_r63452_off(ctx); 186 if (ret < 0) 187 dev_err(dev, "Failed to un-initialize panel: %d\n", ret); 188 189 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 190 191 ctx->prepared = false; 192 return 0; 193 } 194 195 static const struct drm_display_mode jdi_fhd_r63452_mode = { 196 .clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000, 197 .hdisplay = 1080, 198 .hsync_start = 1080 + 120, 199 .hsync_end = 1080 + 120 + 16, 200 .htotal = 1080 + 120 + 16 + 40, 201 .vdisplay = 1920, 202 .vsync_start = 1920 + 4, 203 .vsync_end = 1920 + 4 + 2, 204 .vtotal = 1920 + 4 + 2 + 4, 205 .width_mm = 64, 206 .height_mm = 114, 207 }; 208 209 static int jdi_fhd_r63452_get_modes(struct drm_panel *panel, 210 struct drm_connector *connector) 211 { 212 struct drm_display_mode *mode; 213 214 mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode); 215 if (!mode) 216 return -ENOMEM; 217 218 drm_mode_set_name(mode); 219 220 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 221 connector->display_info.width_mm = mode->width_mm; 222 connector->display_info.height_mm = mode->height_mm; 223 drm_mode_probed_add(connector, mode); 224 225 return 1; 226 } 227 228 static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = { 229 .prepare = jdi_fhd_r63452_prepare, 230 .unprepare = jdi_fhd_r63452_unprepare, 231 .get_modes = jdi_fhd_r63452_get_modes, 232 }; 233 234 static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi) 235 { 236 struct device *dev = &dsi->dev; 237 struct jdi_fhd_r63452 *ctx; 238 int ret; 239 240 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 241 if (!ctx) 242 return -ENOMEM; 243 244 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 245 if (IS_ERR(ctx->reset_gpio)) 246 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 247 "Failed to get reset-gpios\n"); 248 249 ctx->dsi = dsi; 250 mipi_dsi_set_drvdata(dsi, ctx); 251 252 dsi->lanes = 4; 253 dsi->format = MIPI_DSI_FMT_RGB888; 254 dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST | 255 MIPI_DSI_CLOCK_NON_CONTINUOUS; 256 257 drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs, 258 DRM_MODE_CONNECTOR_DSI); 259 260 ret = drm_panel_of_backlight(&ctx->panel); 261 if (ret) 262 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 263 264 drm_panel_add(&ctx->panel); 265 266 ret = mipi_dsi_attach(dsi); 267 if (ret < 0) { 268 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 269 return ret; 270 } 271 272 return 0; 273 } 274 275 static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi) 276 { 277 struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi); 278 int ret; 279 280 ret = mipi_dsi_detach(dsi); 281 if (ret < 0) 282 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 283 284 drm_panel_remove(&ctx->panel); 285 } 286 287 static const struct of_device_id jdi_fhd_r63452_of_match[] = { 288 { .compatible = "jdi,fhd-r63452" }, 289 { /* sentinel */ } 290 }; 291 MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match); 292 293 static struct mipi_dsi_driver jdi_fhd_r63452_driver = { 294 .probe = jdi_fhd_r63452_probe, 295 .remove = jdi_fhd_r63452_remove, 296 .driver = { 297 .name = "panel-jdi-fhd-r63452", 298 .of_match_table = jdi_fhd_r63452_of_match, 299 }, 300 }; 301 module_mipi_dsi_driver(jdi_fhd_r63452_driver); 302 303 MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>"); 304 MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode"); 305 MODULE_LICENSE("GPL v2"); 306