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_drm_panel_alloc(dev, struct sharp_ls060, panel, 197 &sharp_ls060_panel_funcs, 198 DRM_MODE_CONNECTOR_DSI); 199 if (IS_ERR(ctx)) 200 return PTR_ERR(ctx); 201 202 ctx->vddi_supply = devm_regulator_get(dev, "vddi"); 203 if (IS_ERR(ctx->vddi_supply)) 204 return PTR_ERR(ctx->vddi_supply); 205 206 ctx->vddh_supply = devm_regulator_get(dev, "vddh"); 207 if (IS_ERR(ctx->vddh_supply)) 208 return PTR_ERR(ctx->vddh_supply); 209 210 ctx->avdd_supply = devm_regulator_get(dev, "avdd"); 211 if (IS_ERR(ctx->avdd_supply)) 212 return PTR_ERR(ctx->avdd_supply); 213 214 ctx->avee_supply = devm_regulator_get(dev, "avee"); 215 if (IS_ERR(ctx->avee_supply)) 216 return PTR_ERR(ctx->avee_supply); 217 218 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 219 if (IS_ERR(ctx->reset_gpio)) 220 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 221 "Failed to get reset-gpios\n"); 222 223 ctx->dsi = dsi; 224 mipi_dsi_set_drvdata(dsi, ctx); 225 226 dsi->lanes = 4; 227 dsi->format = MIPI_DSI_FMT_RGB888; 228 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 229 MIPI_DSI_MODE_NO_EOT_PACKET | 230 MIPI_DSI_CLOCK_NON_CONTINUOUS; 231 232 ret = drm_panel_of_backlight(&ctx->panel); 233 if (ret) 234 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 235 236 drm_panel_add(&ctx->panel); 237 238 ret = mipi_dsi_attach(dsi); 239 if (ret < 0) { 240 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 241 drm_panel_remove(&ctx->panel); 242 return ret; 243 } 244 245 return 0; 246 } 247 248 static void sharp_ls060_remove(struct mipi_dsi_device *dsi) 249 { 250 struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi); 251 int ret; 252 253 ret = mipi_dsi_detach(dsi); 254 if (ret < 0) 255 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 256 257 drm_panel_remove(&ctx->panel); 258 } 259 260 static const struct of_device_id sharp_ls060t1sx01_of_match[] = { 261 { .compatible = "sharp,ls060t1sx01" }, 262 { /* sentinel */ } 263 }; 264 MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match); 265 266 static struct mipi_dsi_driver sharp_ls060_driver = { 267 .probe = sharp_ls060_probe, 268 .remove = sharp_ls060_remove, 269 .driver = { 270 .name = "panel-sharp-ls060t1sx01", 271 .of_match_table = sharp_ls060t1sx01_of_match, 272 }, 273 }; 274 module_mipi_dsi_driver(sharp_ls060_driver); 275 276 MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>"); 277 MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel"); 278 MODULE_LICENSE("GPL v2"); 279