1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/array_size.h> 4 #include <linux/delay.h> 5 #include <linux/err.h> 6 #include <linux/gpio/consumer.h> 7 #include <linux/mod_devicetable.h> 8 #include <linux/module.h> 9 #include <linux/property.h> 10 #include <linux/regulator/consumer.h> 11 12 #include <video/mipi_display.h> 13 14 #include <drm/drm_mipi_dsi.h> 15 #include <drm/drm_modes.h> 16 #include <drm/drm_panel.h> 17 18 #define R61307_MACP 0xb0 /* Manufacturer CMD Protect */ 19 #define R61307_MACP_ON 0x03 20 #define R61307_MACP_OFF 0x04 21 22 #define R61307_INVERSION 0xc1 23 #define R61307_GAMMA_SET_A 0xc8 /* Gamma Setting A */ 24 #define R61307_GAMMA_SET_B 0xc9 /* Gamma Setting B */ 25 #define R61307_GAMMA_SET_C 0xca /* Gamma Setting C */ 26 #define R61307_CONTRAST_SET 0xcc 27 28 struct renesas_r61307 { 29 struct drm_panel panel; 30 struct mipi_dsi_device *dsi; 31 32 struct regulator *vcc_supply; 33 struct regulator *iovcc_supply; 34 35 struct gpio_desc *reset_gpio; 36 37 bool prepared; 38 39 bool dig_cont_adj; 40 bool inversion; 41 u32 gamma; 42 }; 43 44 static const u8 gamma_setting[][25] = { 45 { /* sentinel */ }, 46 { 47 R61307_GAMMA_SET_A, 48 0x00, 0x06, 0x0a, 0x0f, 49 0x14, 0x1f, 0x1f, 0x17, 50 0x12, 0x0c, 0x09, 0x06, 51 0x00, 0x06, 0x0a, 0x0f, 52 0x14, 0x1f, 0x1f, 0x17, 53 0x12, 0x0c, 0x09, 0x06 54 }, 55 { 56 R61307_GAMMA_SET_A, 57 0x00, 0x05, 0x0b, 0x0f, 58 0x11, 0x1d, 0x20, 0x18, 59 0x18, 0x09, 0x07, 0x06, 60 0x00, 0x05, 0x0b, 0x0f, 61 0x11, 0x1d, 0x20, 0x18, 62 0x18, 0x09, 0x07, 0x06 63 }, 64 { 65 R61307_GAMMA_SET_A, 66 0x0b, 0x0d, 0x10, 0x14, 67 0x13, 0x1d, 0x20, 0x18, 68 0x12, 0x09, 0x07, 0x06, 69 0x0a, 0x0c, 0x10, 0x14, 70 0x13, 0x1d, 0x20, 0x18, 71 0x12, 0x09, 0x07, 0x06 72 }, 73 }; 74 75 static inline struct renesas_r61307 *to_renesas_r61307(struct drm_panel *panel) 76 { 77 return container_of(panel, struct renesas_r61307, panel); 78 } 79 80 static void renesas_r61307_reset(struct renesas_r61307 *priv) 81 { 82 gpiod_set_value_cansleep(priv->reset_gpio, 1); 83 usleep_range(10000, 11000); 84 gpiod_set_value_cansleep(priv->reset_gpio, 0); 85 usleep_range(2000, 3000); 86 } 87 88 static int renesas_r61307_prepare(struct drm_panel *panel) 89 { 90 struct renesas_r61307 *priv = to_renesas_r61307(panel); 91 struct device *dev = &priv->dsi->dev; 92 int ret; 93 94 if (priv->prepared) 95 return 0; 96 97 ret = regulator_enable(priv->vcc_supply); 98 if (ret) { 99 dev_err(dev, "failed to enable vcc power supply\n"); 100 return ret; 101 } 102 103 usleep_range(2000, 3000); 104 105 ret = regulator_enable(priv->iovcc_supply); 106 if (ret) { 107 dev_err(dev, "failed to enable iovcc power supply\n"); 108 return ret; 109 } 110 111 usleep_range(2000, 3000); 112 113 renesas_r61307_reset(priv); 114 115 priv->prepared = true; 116 return 0; 117 } 118 119 static int renesas_r61307_enable(struct drm_panel *panel) 120 { 121 struct renesas_r61307 *priv = to_renesas_r61307(panel); 122 struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi }; 123 124 mipi_dsi_dcs_exit_sleep_mode_multi(&ctx); 125 mipi_dsi_msleep(&ctx, 80); 126 127 mipi_dsi_dcs_write_seq_multi(&ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00); 128 mipi_dsi_msleep(&ctx, 20); 129 130 mipi_dsi_dcs_set_pixel_format_multi(&ctx, MIPI_DCS_PIXEL_FMT_24BIT << 4); 131 132 /* MACP Off */ 133 mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_OFF); 134 135 if (priv->dig_cont_adj) 136 mipi_dsi_generic_write_seq_multi(&ctx, R61307_CONTRAST_SET, 137 0xdc, 0xb4, 0xff); 138 139 if (priv->gamma) 140 mipi_dsi_generic_write_multi(&ctx, gamma_setting[priv->gamma], 141 sizeof(gamma_setting[priv->gamma])); 142 143 if (priv->inversion) 144 mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION, 145 0x00, 0x50, 0x03, 0x22, 146 0x16, 0x06, 0x60, 0x11); 147 else 148 mipi_dsi_generic_write_seq_multi(&ctx, R61307_INVERSION, 149 0x00, 0x10, 0x03, 0x22, 150 0x16, 0x06, 0x60, 0x01); 151 152 /* MACP On */ 153 mipi_dsi_generic_write_seq_multi(&ctx, R61307_MACP, R61307_MACP_ON); 154 155 mipi_dsi_dcs_set_display_on_multi(&ctx); 156 mipi_dsi_msleep(&ctx, 50); 157 158 return 0; 159 } 160 161 static int renesas_r61307_disable(struct drm_panel *panel) 162 { 163 struct renesas_r61307 *priv = to_renesas_r61307(panel); 164 struct mipi_dsi_multi_context ctx = { .dsi = priv->dsi }; 165 166 mipi_dsi_dcs_set_display_off_multi(&ctx); 167 mipi_dsi_msleep(&ctx, 100); 168 mipi_dsi_dcs_enter_sleep_mode_multi(&ctx); 169 170 return 0; 171 } 172 173 static int renesas_r61307_unprepare(struct drm_panel *panel) 174 { 175 struct renesas_r61307 *priv = to_renesas_r61307(panel); 176 177 if (!priv->prepared) 178 return 0; 179 180 usleep_range(10000, 11000); 181 182 gpiod_set_value_cansleep(priv->reset_gpio, 1); 183 usleep_range(5000, 6000); 184 185 regulator_disable(priv->iovcc_supply); 186 usleep_range(2000, 3000); 187 regulator_disable(priv->vcc_supply); 188 189 priv->prepared = false; 190 return 0; 191 } 192 193 static const struct drm_display_mode renesas_r61307_mode = { 194 .clock = (768 + 116 + 81 + 5) * (1024 + 24 + 8 + 2) * 60 / 1000, 195 .hdisplay = 768, 196 .hsync_start = 768 + 116, 197 .hsync_end = 768 + 116 + 81, 198 .htotal = 768 + 116 + 81 + 5, 199 .vdisplay = 1024, 200 .vsync_start = 1024 + 24, 201 .vsync_end = 1024 + 24 + 8, 202 .vtotal = 1024 + 24 + 8 + 2, 203 .width_mm = 76, 204 .height_mm = 101, 205 }; 206 207 static int renesas_r61307_get_modes(struct drm_panel *panel, 208 struct drm_connector *connector) 209 { 210 struct drm_display_mode *mode; 211 212 mode = drm_mode_duplicate(connector->dev, &renesas_r61307_mode); 213 if (!mode) 214 return -ENOMEM; 215 216 drm_mode_set_name(mode); 217 218 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 219 connector->display_info.width_mm = mode->width_mm; 220 connector->display_info.height_mm = mode->height_mm; 221 drm_mode_probed_add(connector, mode); 222 223 return 1; 224 } 225 226 static const struct drm_panel_funcs renesas_r61307_panel_funcs = { 227 .prepare = renesas_r61307_prepare, 228 .enable = renesas_r61307_enable, 229 .disable = renesas_r61307_disable, 230 .unprepare = renesas_r61307_unprepare, 231 .get_modes = renesas_r61307_get_modes, 232 }; 233 234 static int renesas_r61307_probe(struct mipi_dsi_device *dsi) 235 { 236 struct device *dev = &dsi->dev; 237 struct renesas_r61307 *priv; 238 int ret; 239 240 priv = devm_drm_panel_alloc(dev, struct renesas_r61307, panel, 241 &renesas_r61307_panel_funcs, 242 DRM_MODE_CONNECTOR_DSI); 243 if (IS_ERR(priv)) 244 return PTR_ERR(priv); 245 246 priv->vcc_supply = devm_regulator_get(dev, "vcc"); 247 if (IS_ERR(priv->vcc_supply)) 248 return dev_err_probe(dev, PTR_ERR(priv->vcc_supply), 249 "Failed to get vcc-supply\n"); 250 251 priv->iovcc_supply = devm_regulator_get(dev, "iovcc"); 252 if (IS_ERR(priv->iovcc_supply)) 253 return dev_err_probe(dev, PTR_ERR(priv->iovcc_supply), 254 "Failed to get iovcc-supply\n"); 255 256 priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", 257 GPIOD_OUT_HIGH); 258 if (IS_ERR(priv->reset_gpio)) 259 return dev_err_probe(dev, PTR_ERR(priv->reset_gpio), 260 "Failed to get reset gpios\n"); 261 262 if (device_property_read_bool(dev, "renesas,inversion")) 263 priv->inversion = true; 264 265 if (device_property_read_bool(dev, "renesas,contrast")) 266 priv->dig_cont_adj = true; 267 268 priv->gamma = 0; 269 device_property_read_u32(dev, "renesas,gamma", &priv->gamma); 270 271 priv->dsi = dsi; 272 mipi_dsi_set_drvdata(dsi, priv); 273 274 dsi->lanes = 4; 275 dsi->format = MIPI_DSI_FMT_RGB888; 276 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | 277 MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM; 278 279 ret = drm_panel_of_backlight(&priv->panel); 280 if (ret) 281 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 282 283 drm_panel_add(&priv->panel); 284 285 ret = mipi_dsi_attach(dsi); 286 if (ret) { 287 drm_panel_remove(&priv->panel); 288 return dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); 289 } 290 291 return 0; 292 } 293 294 static void renesas_r61307_remove(struct mipi_dsi_device *dsi) 295 { 296 struct renesas_r61307 *priv = mipi_dsi_get_drvdata(dsi); 297 int ret; 298 299 ret = mipi_dsi_detach(dsi); 300 if (ret) 301 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 302 303 drm_panel_remove(&priv->panel); 304 } 305 306 static const struct of_device_id renesas_r61307_of_match[] = { 307 { .compatible = "hit,tx13d100vm0eaa" }, 308 { .compatible = "koe,tx13d100vm0eaa" }, 309 { /* sentinel */ } 310 }; 311 MODULE_DEVICE_TABLE(of, renesas_r61307_of_match); 312 313 static struct mipi_dsi_driver renesas_r61307_driver = { 314 .probe = renesas_r61307_probe, 315 .remove = renesas_r61307_remove, 316 .driver = { 317 .name = "panel-renesas-r61307", 318 .of_match_table = renesas_r61307_of_match, 319 }, 320 }; 321 module_mipi_dsi_driver(renesas_r61307_driver); 322 323 MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>"); 324 MODULE_DESCRIPTION("Renesas R61307-based panel driver"); 325 MODULE_LICENSE("GPL"); 326