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 }; 28 29 static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel) 30 { 31 return container_of(panel, struct sharp_ls060, panel); 32 } 33 34 static void sharp_ls060_reset(struct sharp_ls060 *ctx) 35 { 36 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 37 usleep_range(10000, 11000); 38 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 39 usleep_range(10000, 11000); 40 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 41 usleep_range(10000, 11000); 42 } 43 44 static int sharp_ls060_on(struct sharp_ls060 *ctx) 45 { 46 struct mipi_dsi_device *dsi = ctx->dsi; 47 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 48 49 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 50 51 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbb, 0x13); 52 mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START); 53 54 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); 55 mipi_dsi_msleep(&dsi_ctx, 120); 56 57 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); 58 mipi_dsi_msleep(&dsi_ctx, 50); 59 60 return dsi_ctx.accum_err; 61 } 62 63 static void sharp_ls060_off(struct sharp_ls060 *ctx) 64 { 65 struct mipi_dsi_device *dsi = ctx->dsi; 66 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 67 68 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 69 70 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); 71 mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000); 72 73 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); 74 mipi_dsi_msleep(&dsi_ctx, 121); 75 } 76 77 static int sharp_ls060_prepare(struct drm_panel *panel) 78 { 79 struct sharp_ls060 *ctx = to_sharp_ls060(panel); 80 int ret; 81 82 ret = regulator_enable(ctx->vddi_supply); 83 if (ret < 0) 84 return ret; 85 86 ret = regulator_enable(ctx->avdd_supply); 87 if (ret < 0) 88 goto err_avdd; 89 90 usleep_range(1000, 2000); 91 92 ret = regulator_enable(ctx->avee_supply); 93 if (ret < 0) 94 goto err_avee; 95 96 usleep_range(10000, 11000); 97 98 ret = regulator_enable(ctx->vddh_supply); 99 if (ret < 0) 100 goto err_vddh; 101 102 usleep_range(10000, 11000); 103 104 sharp_ls060_reset(ctx); 105 106 ret = sharp_ls060_on(ctx); 107 if (ret < 0) 108 goto err_on; 109 110 return 0; 111 112 err_on: 113 regulator_disable(ctx->vddh_supply); 114 115 usleep_range(10000, 11000); 116 117 err_vddh: 118 regulator_disable(ctx->avee_supply); 119 120 err_avee: 121 regulator_disable(ctx->avdd_supply); 122 123 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 124 125 err_avdd: 126 regulator_disable(ctx->vddi_supply); 127 128 return ret; 129 } 130 131 static int sharp_ls060_unprepare(struct drm_panel *panel) 132 { 133 struct sharp_ls060 *ctx = to_sharp_ls060(panel); 134 135 sharp_ls060_off(ctx); 136 137 regulator_disable(ctx->vddh_supply); 138 139 usleep_range(10000, 11000); 140 141 regulator_disable(ctx->avee_supply); 142 regulator_disable(ctx->avdd_supply); 143 144 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 145 146 regulator_disable(ctx->vddi_supply); 147 148 return 0; 149 } 150 151 static const struct drm_display_mode sharp_ls060_mode = { 152 .clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000, 153 .hdisplay = 1080, 154 .hsync_start = 1080 + 96, 155 .hsync_end = 1080 + 96 + 16, 156 .htotal = 1080 + 96 + 16 + 64, 157 .vdisplay = 1920, 158 .vsync_start = 1920 + 4, 159 .vsync_end = 1920 + 4 + 1, 160 .vtotal = 1920 + 4 + 1 + 16, 161 .width_mm = 75, 162 .height_mm = 132, 163 }; 164 165 static int sharp_ls060_get_modes(struct drm_panel *panel, 166 struct drm_connector *connector) 167 { 168 struct drm_display_mode *mode; 169 170 mode = drm_mode_duplicate(connector->dev, &sharp_ls060_mode); 171 if (!mode) 172 return -ENOMEM; 173 174 drm_mode_set_name(mode); 175 176 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 177 connector->display_info.width_mm = mode->width_mm; 178 connector->display_info.height_mm = mode->height_mm; 179 drm_mode_probed_add(connector, mode); 180 181 return 1; 182 } 183 184 static const struct drm_panel_funcs sharp_ls060_panel_funcs = { 185 .prepare = sharp_ls060_prepare, 186 .unprepare = sharp_ls060_unprepare, 187 .get_modes = sharp_ls060_get_modes, 188 }; 189 190 static int sharp_ls060_probe(struct mipi_dsi_device *dsi) 191 { 192 struct device *dev = &dsi->dev; 193 struct sharp_ls060 *ctx; 194 int ret; 195 196 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 197 if (!ctx) 198 return -ENOMEM; 199 200 ctx->vddi_supply = devm_regulator_get(dev, "vddi"); 201 if (IS_ERR(ctx->vddi_supply)) 202 return PTR_ERR(ctx->vddi_supply); 203 204 ctx->vddh_supply = devm_regulator_get(dev, "vddh"); 205 if (IS_ERR(ctx->vddh_supply)) 206 return PTR_ERR(ctx->vddh_supply); 207 208 ctx->avdd_supply = devm_regulator_get(dev, "avdd"); 209 if (IS_ERR(ctx->avdd_supply)) 210 return PTR_ERR(ctx->avdd_supply); 211 212 ctx->avee_supply = devm_regulator_get(dev, "avee"); 213 if (IS_ERR(ctx->avee_supply)) 214 return PTR_ERR(ctx->avee_supply); 215 216 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 217 if (IS_ERR(ctx->reset_gpio)) 218 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 219 "Failed to get reset-gpios\n"); 220 221 ctx->dsi = dsi; 222 mipi_dsi_set_drvdata(dsi, ctx); 223 224 dsi->lanes = 4; 225 dsi->format = MIPI_DSI_FMT_RGB888; 226 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 227 MIPI_DSI_MODE_NO_EOT_PACKET | 228 MIPI_DSI_CLOCK_NON_CONTINUOUS; 229 230 drm_panel_init(&ctx->panel, dev, &sharp_ls060_panel_funcs, 231 DRM_MODE_CONNECTOR_DSI); 232 233 ret = drm_panel_of_backlight(&ctx->panel); 234 if (ret) 235 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 236 237 drm_panel_add(&ctx->panel); 238 239 ret = mipi_dsi_attach(dsi); 240 if (ret < 0) { 241 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 242 drm_panel_remove(&ctx->panel); 243 return ret; 244 } 245 246 return 0; 247 } 248 249 static void sharp_ls060_remove(struct mipi_dsi_device *dsi) 250 { 251 struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi); 252 int ret; 253 254 ret = mipi_dsi_detach(dsi); 255 if (ret < 0) 256 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 257 258 drm_panel_remove(&ctx->panel); 259 } 260 261 static const struct of_device_id sharp_ls060t1sx01_of_match[] = { 262 { .compatible = "sharp,ls060t1sx01" }, 263 { /* sentinel */ } 264 }; 265 MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match); 266 267 static struct mipi_dsi_driver sharp_ls060_driver = { 268 .probe = sharp_ls060_probe, 269 .remove = sharp_ls060_remove, 270 .driver = { 271 .name = "panel-sharp-ls060t1sx01", 272 .of_match_table = sharp_ls060t1sx01_of_match, 273 }, 274 }; 275 module_mipi_dsi_driver(sharp_ls060_driver); 276 277 MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>"); 278 MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel"); 279 MODULE_LICENSE("GPL v2"); 280