1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2021 Linaro Ltd. 3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: 4 * Copyright (c) 2013-2014, 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 13 #include <video/mipi_display.h> 14 15 #include <drm/drm_mipi_dsi.h> 16 #include <drm/drm_modes.h> 17 #include <drm/drm_panel.h> 18 19 struct sharp_ls060 { 20 struct drm_panel panel; 21 struct mipi_dsi_device *dsi; 22 struct regulator *vddi_supply; 23 struct regulator *vddh_supply; 24 struct regulator *avdd_supply; 25 struct regulator *avee_supply; 26 struct gpio_desc *reset_gpio; 27 bool prepared; 28 }; 29 30 static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel) 31 { 32 return container_of(panel, struct sharp_ls060, panel); 33 } 34 35 #define dsi_dcs_write_seq(dsi, seq...) ({ \ 36 static const u8 d[] = { seq }; \ 37 \ 38 mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \ 39 }) 40 41 static void sharp_ls060_reset(struct sharp_ls060 *ctx) 42 { 43 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 44 usleep_range(10000, 11000); 45 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 46 usleep_range(10000, 11000); 47 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 48 usleep_range(10000, 11000); 49 } 50 51 static int sharp_ls060_on(struct sharp_ls060 *ctx) 52 { 53 struct mipi_dsi_device *dsi = ctx->dsi; 54 struct device *dev = &dsi->dev; 55 int ret; 56 57 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 58 59 ret = dsi_dcs_write_seq(dsi, 0xbb, 0x13); 60 if (ret < 0) { 61 dev_err(dev, "Failed to send command: %d\n", ret); 62 return ret; 63 } 64 65 ret = dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START); 66 if (ret < 0) { 67 dev_err(dev, "Failed to send command: %d\n", ret); 68 return ret; 69 } 70 71 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 72 if (ret < 0) { 73 dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 74 return ret; 75 } 76 msleep(120); 77 78 ret = mipi_dsi_dcs_set_display_on(dsi); 79 if (ret < 0) { 80 dev_err(dev, "Failed to set display on: %d\n", ret); 81 return ret; 82 } 83 msleep(50); 84 85 return 0; 86 } 87 88 static int sharp_ls060_off(struct sharp_ls060 *ctx) 89 { 90 struct mipi_dsi_device *dsi = ctx->dsi; 91 struct device *dev = &dsi->dev; 92 int ret; 93 94 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 95 96 ret = mipi_dsi_dcs_set_display_off(dsi); 97 if (ret < 0) { 98 dev_err(dev, "Failed to set display off: %d\n", ret); 99 return ret; 100 } 101 usleep_range(2000, 3000); 102 103 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 104 if (ret < 0) { 105 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 106 return ret; 107 } 108 msleep(121); 109 110 return 0; 111 } 112 113 static int sharp_ls060_prepare(struct drm_panel *panel) 114 { 115 struct sharp_ls060 *ctx = to_sharp_ls060(panel); 116 struct device *dev = &ctx->dsi->dev; 117 int ret; 118 119 if (ctx->prepared) 120 return 0; 121 122 ret = regulator_enable(ctx->vddi_supply); 123 if (ret < 0) 124 return ret; 125 126 ret = regulator_enable(ctx->avdd_supply); 127 if (ret < 0) 128 goto err_avdd; 129 130 usleep_range(1000, 2000); 131 132 ret = regulator_enable(ctx->avee_supply); 133 if (ret < 0) 134 goto err_avee; 135 136 usleep_range(10000, 11000); 137 138 ret = regulator_enable(ctx->vddh_supply); 139 if (ret < 0) 140 goto err_vddh; 141 142 usleep_range(10000, 11000); 143 144 sharp_ls060_reset(ctx); 145 146 ret = sharp_ls060_on(ctx); 147 if (ret < 0) { 148 dev_err(dev, "Failed to initialize panel: %d\n", ret); 149 goto err_on; 150 } 151 152 ctx->prepared = true; 153 154 return 0; 155 156 err_on: 157 regulator_disable(ctx->vddh_supply); 158 159 usleep_range(10000, 11000); 160 161 err_vddh: 162 regulator_disable(ctx->avee_supply); 163 164 err_avee: 165 regulator_disable(ctx->avdd_supply); 166 167 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 168 169 err_avdd: 170 regulator_disable(ctx->vddi_supply); 171 172 return ret; 173 } 174 175 static int sharp_ls060_unprepare(struct drm_panel *panel) 176 { 177 struct sharp_ls060 *ctx = to_sharp_ls060(panel); 178 struct device *dev = &ctx->dsi->dev; 179 int ret; 180 181 if (!ctx->prepared) 182 return 0; 183 184 ret = sharp_ls060_off(ctx); 185 if (ret < 0) 186 dev_err(dev, "Failed to un-initialize panel: %d\n", ret); 187 188 regulator_disable(ctx->vddh_supply); 189 190 usleep_range(10000, 11000); 191 192 regulator_disable(ctx->avee_supply); 193 regulator_disable(ctx->avdd_supply); 194 195 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 196 197 regulator_disable(ctx->vddi_supply); 198 199 ctx->prepared = false; 200 return 0; 201 } 202 203 static const struct drm_display_mode sharp_ls060_mode = { 204 .clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000, 205 .hdisplay = 1080, 206 .hsync_start = 1080 + 96, 207 .hsync_end = 1080 + 96 + 16, 208 .htotal = 1080 + 96 + 16 + 64, 209 .vdisplay = 1920, 210 .vsync_start = 1920 + 4, 211 .vsync_end = 1920 + 4 + 1, 212 .vtotal = 1920 + 4 + 1 + 16, 213 .width_mm = 75, 214 .height_mm = 132, 215 }; 216 217 static int sharp_ls060_get_modes(struct drm_panel *panel, 218 struct drm_connector *connector) 219 { 220 struct drm_display_mode *mode; 221 222 mode = drm_mode_duplicate(connector->dev, &sharp_ls060_mode); 223 if (!mode) 224 return -ENOMEM; 225 226 drm_mode_set_name(mode); 227 228 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 229 connector->display_info.width_mm = mode->width_mm; 230 connector->display_info.height_mm = mode->height_mm; 231 drm_mode_probed_add(connector, mode); 232 233 return 1; 234 } 235 236 static const struct drm_panel_funcs sharp_ls060_panel_funcs = { 237 .prepare = sharp_ls060_prepare, 238 .unprepare = sharp_ls060_unprepare, 239 .get_modes = sharp_ls060_get_modes, 240 }; 241 242 static int sharp_ls060_probe(struct mipi_dsi_device *dsi) 243 { 244 struct device *dev = &dsi->dev; 245 struct sharp_ls060 *ctx; 246 int ret; 247 248 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 249 if (!ctx) 250 return -ENOMEM; 251 252 ctx->vddi_supply = devm_regulator_get(dev, "vddi"); 253 if (IS_ERR(ctx->vddi_supply)) 254 return PTR_ERR(ctx->vddi_supply); 255 256 ctx->vddh_supply = devm_regulator_get(dev, "vddh"); 257 if (IS_ERR(ctx->vddh_supply)) 258 return PTR_ERR(ctx->vddh_supply); 259 260 ctx->avdd_supply = devm_regulator_get(dev, "avdd"); 261 if (IS_ERR(ctx->avdd_supply)) 262 return PTR_ERR(ctx->avdd_supply); 263 264 ctx->avee_supply = devm_regulator_get(dev, "avee"); 265 if (IS_ERR(ctx->avee_supply)) 266 return PTR_ERR(ctx->avee_supply); 267 268 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 269 if (IS_ERR(ctx->reset_gpio)) 270 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 271 "Failed to get reset-gpios\n"); 272 273 ctx->dsi = dsi; 274 mipi_dsi_set_drvdata(dsi, ctx); 275 276 dsi->lanes = 4; 277 dsi->format = MIPI_DSI_FMT_RGB888; 278 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 279 MIPI_DSI_MODE_NO_EOT_PACKET | 280 MIPI_DSI_CLOCK_NON_CONTINUOUS; 281 282 drm_panel_init(&ctx->panel, dev, &sharp_ls060_panel_funcs, 283 DRM_MODE_CONNECTOR_DSI); 284 285 ret = drm_panel_of_backlight(&ctx->panel); 286 if (ret) 287 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 288 289 drm_panel_add(&ctx->panel); 290 291 ret = mipi_dsi_attach(dsi); 292 if (ret < 0) { 293 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 294 drm_panel_remove(&ctx->panel); 295 return ret; 296 } 297 298 return 0; 299 } 300 301 static void sharp_ls060_remove(struct mipi_dsi_device *dsi) 302 { 303 struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi); 304 int ret; 305 306 ret = mipi_dsi_detach(dsi); 307 if (ret < 0) 308 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 309 310 drm_panel_remove(&ctx->panel); 311 } 312 313 static const struct of_device_id sharp_ls060t1sx01_of_match[] = { 314 { .compatible = "sharp,ls060t1sx01" }, 315 { /* sentinel */ } 316 }; 317 MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match); 318 319 static struct mipi_dsi_driver sharp_ls060_driver = { 320 .probe = sharp_ls060_probe, 321 .remove = sharp_ls060_remove, 322 .driver = { 323 .name = "panel-sharp-ls060t1sx01", 324 .of_match_table = sharp_ls060t1sx01_of_match, 325 }, 326 }; 327 module_mipi_dsi_driver(sharp_ls060_driver); 328 329 MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>"); 330 MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel"); 331 MODULE_LICENSE("GPL v2"); 332