1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (c) 2021, Linaro Limited 4 * 5 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: 6 * Copyright (c) 2013, The Linux Foundation. All rights reserved. 7 */ 8 9#include <linux/backlight.h> 10#include <linux/delay.h> 11#include <linux/gpio/consumer.h> 12#include <linux/module.h> 13#include <linux/of.h> 14#include <linux/regulator/consumer.h> 15 16#include <drm/drm_mipi_dsi.h> 17#include <drm/drm_modes.h> 18#include <drm/drm_panel.h> 19 20struct truly_nt35521 { 21 struct drm_panel panel; 22 struct mipi_dsi_device *dsi; 23 struct regulator_bulk_data supplies[2]; 24 struct gpio_desc *reset_gpio; 25 struct gpio_desc *blen_gpio; 26 bool prepared; 27 bool enabled; 28}; 29 30static inline 31struct truly_nt35521 *to_truly_nt35521(struct drm_panel *panel) 32{ 33 return container_of(panel, struct truly_nt35521, panel); 34} 35 36static void truly_nt35521_reset(struct truly_nt35521 *ctx) 37{ 38 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 39 usleep_range(1000, 2000); 40 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 41 usleep_range(10000, 11000); 42 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 43 msleep(150); 44} 45 46static int truly_nt35521_on(struct truly_nt35521 *ctx) 47{ 48 struct mipi_dsi_device *dsi = ctx->dsi; 49 struct device *dev = &dsi->dev; 50 int ret; 51 52 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 53 54 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00); 55 mipi_dsi_generic_write_seq(dsi, 0xff, 0xaa, 0x55, 0xa5, 0x80); 56 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x11, 0x00); 57 mipi_dsi_generic_write_seq(dsi, 0xf7, 0x20, 0x00); 58 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x01); 59 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x21); 60 mipi_dsi_generic_write_seq(dsi, 0xbd, 0x01, 0xa0, 0x10, 0x08, 0x01); 61 mipi_dsi_generic_write_seq(dsi, 0xb8, 0x01, 0x02, 0x0c, 0x02); 62 mipi_dsi_generic_write_seq(dsi, 0xbb, 0x11, 0x11); 63 mipi_dsi_generic_write_seq(dsi, 0xbc, 0x00, 0x00); 64 mipi_dsi_generic_write_seq(dsi, 0xb6, 0x02); 65 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x01); 66 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x09, 0x09); 67 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x09, 0x09); 68 mipi_dsi_generic_write_seq(dsi, 0xbc, 0x8c, 0x00); 69 mipi_dsi_generic_write_seq(dsi, 0xbd, 0x8c, 0x00); 70 mipi_dsi_generic_write_seq(dsi, 0xca, 0x00); 71 mipi_dsi_generic_write_seq(dsi, 0xc0, 0x04); 72 mipi_dsi_generic_write_seq(dsi, 0xbe, 0xb5); 73 mipi_dsi_generic_write_seq(dsi, 0xb3, 0x35, 0x35); 74 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x25, 0x25); 75 mipi_dsi_generic_write_seq(dsi, 0xb9, 0x43, 0x43); 76 mipi_dsi_generic_write_seq(dsi, 0xba, 0x24, 0x24); 77 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x02); 78 mipi_dsi_generic_write_seq(dsi, 0xee, 0x03); 79 mipi_dsi_generic_write_seq(dsi, 0xb0, 80 0x00, 0xb2, 0x00, 0xb3, 0x00, 0xb6, 0x00, 0xc3, 81 0x00, 0xce, 0x00, 0xe1, 0x00, 0xf3, 0x01, 0x11); 82 mipi_dsi_generic_write_seq(dsi, 0xb1, 83 0x01, 0x2e, 0x01, 0x5c, 0x01, 0x82, 0x01, 0xc3, 84 0x01, 0xfe, 0x02, 0x00, 0x02, 0x37, 0x02, 0x77); 85 mipi_dsi_generic_write_seq(dsi, 0xb2, 86 0x02, 0xa1, 0x02, 0xd7, 0x02, 0xfe, 0x03, 0x2c, 87 0x03, 0x4b, 0x03, 0x63, 0x03, 0x8f, 0x03, 0x90); 88 mipi_dsi_generic_write_seq(dsi, 0xb3, 0x03, 0x96, 0x03, 0x98); 89 mipi_dsi_generic_write_seq(dsi, 0xb4, 90 0x00, 0x81, 0x00, 0x8b, 0x00, 0x9c, 0x00, 0xa9, 91 0x00, 0xb5, 0x00, 0xcb, 0x00, 0xdf, 0x01, 0x02); 92 mipi_dsi_generic_write_seq(dsi, 0xb5, 93 0x01, 0x1f, 0x01, 0x51, 0x01, 0x7a, 0x01, 0xbf, 94 0x01, 0xfa, 0x01, 0xfc, 0x02, 0x34, 0x02, 0x76); 95 mipi_dsi_generic_write_seq(dsi, 0xb6, 96 0x02, 0x9f, 0x02, 0xd7, 0x02, 0xfc, 0x03, 0x2c, 97 0x03, 0x4a, 0x03, 0x63, 0x03, 0x8f, 0x03, 0xa2); 98 mipi_dsi_generic_write_seq(dsi, 0xb7, 0x03, 0xb8, 0x03, 0xba); 99 mipi_dsi_generic_write_seq(dsi, 0xb8, 100 0x00, 0x01, 0x00, 0x02, 0x00, 0x0e, 0x00, 0x2a, 101 0x00, 0x41, 0x00, 0x67, 0x00, 0x87, 0x00, 0xb9); 102 mipi_dsi_generic_write_seq(dsi, 0xb9, 103 0x00, 0xe2, 0x01, 0x22, 0x01, 0x54, 0x01, 0xa3, 104 0x01, 0xe6, 0x01, 0xe7, 0x02, 0x24, 0x02, 0x67); 105 mipi_dsi_generic_write_seq(dsi, 0xba, 106 0x02, 0x93, 0x02, 0xcd, 0x02, 0xf6, 0x03, 0x31, 107 0x03, 0x6c, 0x03, 0xe9, 0x03, 0xef, 0x03, 0xf4); 108 mipi_dsi_generic_write_seq(dsi, 0xbb, 0x03, 0xf6, 0x03, 0xf7); 109 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x03); 110 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x22, 0x00); 111 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x22, 0x00); 112 mipi_dsi_generic_write_seq(dsi, 0xb2, 0x05, 0x00, 0x60, 0x00, 0x00); 113 mipi_dsi_generic_write_seq(dsi, 0xb3, 0x05, 0x00, 0x60, 0x00, 0x00); 114 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x05, 0x00, 0x60, 0x00, 0x00); 115 mipi_dsi_generic_write_seq(dsi, 0xb5, 0x05, 0x00, 0x60, 0x00, 0x00); 116 mipi_dsi_generic_write_seq(dsi, 0xba, 0x53, 0x00, 0x60, 0x00, 0x00); 117 mipi_dsi_generic_write_seq(dsi, 0xbb, 0x53, 0x00, 0x60, 0x00, 0x00); 118 mipi_dsi_generic_write_seq(dsi, 0xbc, 0x53, 0x00, 0x60, 0x00, 0x00); 119 mipi_dsi_generic_write_seq(dsi, 0xbd, 0x53, 0x00, 0x60, 0x00, 0x00); 120 mipi_dsi_generic_write_seq(dsi, 0xc0, 0x00, 0x34, 0x00, 0x00); 121 mipi_dsi_generic_write_seq(dsi, 0xc1, 0x00, 0x00, 0x34, 0x00); 122 mipi_dsi_generic_write_seq(dsi, 0xc2, 0x00, 0x00, 0x34, 0x00); 123 mipi_dsi_generic_write_seq(dsi, 0xc3, 0x00, 0x00, 0x34, 0x00); 124 mipi_dsi_generic_write_seq(dsi, 0xc4, 0x60); 125 mipi_dsi_generic_write_seq(dsi, 0xc5, 0xc0); 126 mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00); 127 mipi_dsi_generic_write_seq(dsi, 0xc7, 0x00); 128 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x05); 129 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x17, 0x06); 130 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x17, 0x06); 131 mipi_dsi_generic_write_seq(dsi, 0xb2, 0x17, 0x06); 132 mipi_dsi_generic_write_seq(dsi, 0xb3, 0x17, 0x06); 133 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x17, 0x06); 134 mipi_dsi_generic_write_seq(dsi, 0xb5, 0x17, 0x06); 135 mipi_dsi_generic_write_seq(dsi, 0xb6, 0x17, 0x06); 136 mipi_dsi_generic_write_seq(dsi, 0xb7, 0x17, 0x06); 137 mipi_dsi_generic_write_seq(dsi, 0xb8, 0x00); 138 mipi_dsi_generic_write_seq(dsi, 0xb9, 0x00, 0x03); 139 mipi_dsi_generic_write_seq(dsi, 0xba, 0x00, 0x00); 140 mipi_dsi_generic_write_seq(dsi, 0xbb, 0x02, 0x03); 141 mipi_dsi_generic_write_seq(dsi, 0xbc, 0x02, 0x03); 142 mipi_dsi_generic_write_seq(dsi, 0xbd, 0x03, 0x03, 0x00, 0x03, 0x03); 143 mipi_dsi_generic_write_seq(dsi, 0xc0, 0x0b); 144 mipi_dsi_generic_write_seq(dsi, 0xc1, 0x09); 145 mipi_dsi_generic_write_seq(dsi, 0xc2, 0xa6); 146 mipi_dsi_generic_write_seq(dsi, 0xc3, 0x05); 147 mipi_dsi_generic_write_seq(dsi, 0xc4, 0x00); 148 mipi_dsi_generic_write_seq(dsi, 0xc5, 0x02); 149 mipi_dsi_generic_write_seq(dsi, 0xc6, 0x22); 150 mipi_dsi_generic_write_seq(dsi, 0xc7, 0x03); 151 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x07, 0x20); 152 mipi_dsi_generic_write_seq(dsi, 0xc9, 0x03, 0x20); 153 mipi_dsi_generic_write_seq(dsi, 0xca, 0x01, 0x60); 154 mipi_dsi_generic_write_seq(dsi, 0xcb, 0x01, 0x60); 155 mipi_dsi_generic_write_seq(dsi, 0xcc, 0x00, 0x00, 0x02); 156 mipi_dsi_generic_write_seq(dsi, 0xcd, 0x00, 0x00, 0x02); 157 mipi_dsi_generic_write_seq(dsi, 0xce, 0x00, 0x00, 0x02); 158 mipi_dsi_generic_write_seq(dsi, 0xcf, 0x00, 0x00, 0x02); 159 mipi_dsi_generic_write_seq(dsi, 0xd1, 0x00, 0x05, 0x01, 0x07, 0x10); 160 mipi_dsi_generic_write_seq(dsi, 0xd2, 0x10, 0x05, 0x05, 0x03, 0x10); 161 mipi_dsi_generic_write_seq(dsi, 0xd3, 0x20, 0x00, 0x43, 0x07, 0x10); 162 mipi_dsi_generic_write_seq(dsi, 0xd4, 0x30, 0x00, 0x43, 0x07, 0x10); 163 mipi_dsi_generic_write_seq(dsi, 0xd0, 164 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); 165 mipi_dsi_generic_write_seq(dsi, 0xd5, 166 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 167 0x00, 0x00, 0x00); 168 mipi_dsi_generic_write_seq(dsi, 0xd6, 169 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 170 0x00, 0x00, 0x00); 171 mipi_dsi_generic_write_seq(dsi, 0xd7, 172 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 173 0x00, 0x00, 0x00); 174 mipi_dsi_generic_write_seq(dsi, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00); 175 mipi_dsi_generic_write_seq(dsi, 0xe5, 0x06); 176 mipi_dsi_generic_write_seq(dsi, 0xe6, 0x06); 177 mipi_dsi_generic_write_seq(dsi, 0xe7, 0x00); 178 mipi_dsi_generic_write_seq(dsi, 0xe8, 0x06); 179 mipi_dsi_generic_write_seq(dsi, 0xe9, 0x06); 180 mipi_dsi_generic_write_seq(dsi, 0xea, 0x06); 181 mipi_dsi_generic_write_seq(dsi, 0xeb, 0x00); 182 mipi_dsi_generic_write_seq(dsi, 0xec, 0x00); 183 mipi_dsi_generic_write_seq(dsi, 0xed, 0x30); 184 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x06); 185 mipi_dsi_generic_write_seq(dsi, 0xb0, 0x31, 0x31); 186 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x31, 0x31); 187 mipi_dsi_generic_write_seq(dsi, 0xb2, 0x2d, 0x2e); 188 mipi_dsi_generic_write_seq(dsi, 0xb3, 0x31, 0x34); 189 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x29, 0x2a); 190 mipi_dsi_generic_write_seq(dsi, 0xb5, 0x12, 0x10); 191 mipi_dsi_generic_write_seq(dsi, 0xb6, 0x18, 0x16); 192 mipi_dsi_generic_write_seq(dsi, 0xb7, 0x00, 0x02); 193 mipi_dsi_generic_write_seq(dsi, 0xb8, 0x08, 0x31); 194 mipi_dsi_generic_write_seq(dsi, 0xb9, 0x31, 0x31); 195 mipi_dsi_generic_write_seq(dsi, 0xba, 0x31, 0x31); 196 mipi_dsi_generic_write_seq(dsi, 0xbb, 0x31, 0x08); 197 mipi_dsi_generic_write_seq(dsi, 0xbc, 0x03, 0x01); 198 mipi_dsi_generic_write_seq(dsi, 0xbd, 0x17, 0x19); 199 mipi_dsi_generic_write_seq(dsi, 0xbe, 0x11, 0x13); 200 mipi_dsi_generic_write_seq(dsi, 0xbf, 0x2a, 0x29); 201 mipi_dsi_generic_write_seq(dsi, 0xc0, 0x34, 0x31); 202 mipi_dsi_generic_write_seq(dsi, 0xc1, 0x2e, 0x2d); 203 mipi_dsi_generic_write_seq(dsi, 0xc2, 0x31, 0x31); 204 mipi_dsi_generic_write_seq(dsi, 0xc3, 0x31, 0x31); 205 mipi_dsi_generic_write_seq(dsi, 0xc4, 0x31, 0x31); 206 mipi_dsi_generic_write_seq(dsi, 0xc5, 0x31, 0x31); 207 mipi_dsi_generic_write_seq(dsi, 0xc6, 0x2e, 0x2d); 208 mipi_dsi_generic_write_seq(dsi, 0xc7, 0x31, 0x34); 209 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x29, 0x2a); 210 mipi_dsi_generic_write_seq(dsi, 0xc9, 0x17, 0x19); 211 mipi_dsi_generic_write_seq(dsi, 0xca, 0x11, 0x13); 212 mipi_dsi_generic_write_seq(dsi, 0xcb, 0x03, 0x01); 213 mipi_dsi_generic_write_seq(dsi, 0xcc, 0x08, 0x31); 214 mipi_dsi_generic_write_seq(dsi, 0xcd, 0x31, 0x31); 215 mipi_dsi_generic_write_seq(dsi, 0xce, 0x31, 0x31); 216 mipi_dsi_generic_write_seq(dsi, 0xcf, 0x31, 0x08); 217 mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00, 0x02); 218 mipi_dsi_generic_write_seq(dsi, 0xd1, 0x12, 0x10); 219 mipi_dsi_generic_write_seq(dsi, 0xd2, 0x18, 0x16); 220 mipi_dsi_generic_write_seq(dsi, 0xd3, 0x2a, 0x29); 221 mipi_dsi_generic_write_seq(dsi, 0xd4, 0x34, 0x31); 222 mipi_dsi_generic_write_seq(dsi, 0xd5, 0x2d, 0x2e); 223 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x31, 0x31); 224 mipi_dsi_generic_write_seq(dsi, 0xd7, 0x31, 0x31); 225 mipi_dsi_generic_write_seq(dsi, 0xe5, 0x31, 0x31); 226 mipi_dsi_generic_write_seq(dsi, 0xe6, 0x31, 0x31); 227 mipi_dsi_generic_write_seq(dsi, 0xd8, 0x00, 0x00, 0x00, 0x00, 0x00); 228 mipi_dsi_generic_write_seq(dsi, 0xd9, 0x00, 0x00, 0x00, 0x00, 0x00); 229 mipi_dsi_generic_write_seq(dsi, 0xe7, 0x00); 230 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x02); 231 mipi_dsi_generic_write_seq(dsi, 0xf7, 0x47); 232 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x0a); 233 mipi_dsi_generic_write_seq(dsi, 0xf7, 0x02); 234 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x17); 235 mipi_dsi_generic_write_seq(dsi, 0xf4, 0x60); 236 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x01); 237 mipi_dsi_generic_write_seq(dsi, 0xf9, 0x46); 238 mipi_dsi_generic_write_seq(dsi, 0x6f, 0x11); 239 mipi_dsi_generic_write_seq(dsi, 0xf3, 0x01); 240 mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); 241 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00); 242 mipi_dsi_generic_write_seq(dsi, 0xd9, 0x02, 0x03, 0x00); 243 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x00, 0x00); 244 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00); 245 mipi_dsi_generic_write_seq(dsi, 0xb1, 0x6c, 0x21); 246 mipi_dsi_generic_write_seq(dsi, 0xf0, 0x55, 0xaa, 0x52, 0x00, 0x00); 247 mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); 248 249 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 250 if (ret < 0) { 251 dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 252 return ret; 253 } 254 msleep(120); 255 256 ret = mipi_dsi_dcs_set_display_on(dsi); 257 if (ret < 0) { 258 dev_err(dev, "Failed to set display on: %d\n", ret); 259 return ret; 260 } 261 usleep_range(1000, 2000); 262 263 mipi_dsi_generic_write_seq(dsi, 0x53, 0x24); 264 265 return 0; 266} 267 268static int truly_nt35521_off(struct truly_nt35521 *ctx) 269{ 270 struct mipi_dsi_device *dsi = ctx->dsi; 271 struct device *dev = &dsi->dev; 272 int ret; 273 274 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 275 276 ret = mipi_dsi_dcs_set_display_off(dsi); 277 if (ret < 0) { 278 dev_err(dev, "Failed to set display off: %d\n", ret); 279 return ret; 280 } 281 msleep(50); 282 283 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 284 if (ret < 0) { 285 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 286 return ret; 287 } 288 msleep(150); 289 290 return 0; 291} 292 293static int truly_nt35521_prepare(struct drm_panel *panel) 294{ 295 struct truly_nt35521 *ctx = to_truly_nt35521(panel); 296 struct device *dev = &ctx->dsi->dev; 297 int ret; 298 299 if (ctx->prepared) 300 return 0; 301 302 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 303 if (ret < 0) { 304 dev_err(dev, "Failed to enable regulators: %d\n", ret); 305 return ret; 306 } 307 308 truly_nt35521_reset(ctx); 309 310 ret = truly_nt35521_on(ctx); 311 if (ret < 0) { 312 dev_err(dev, "Failed to initialize panel: %d\n", ret); 313 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 314 return ret; 315 } 316 317 ctx->prepared = true; 318 return 0; 319} 320 321static int truly_nt35521_unprepare(struct drm_panel *panel) 322{ 323 struct truly_nt35521 *ctx = to_truly_nt35521(panel); 324 struct device *dev = &ctx->dsi->dev; 325 int ret; 326 327 if (!ctx->prepared) 328 return 0; 329 330 ret = truly_nt35521_off(ctx); 331 if (ret < 0) 332 dev_err(dev, "Failed to un-initialize panel: %d\n", ret); 333 334 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 335 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), 336 ctx->supplies); 337 338 ctx->prepared = false; 339 return 0; 340} 341 342static int truly_nt35521_enable(struct drm_panel *panel) 343{ 344 struct truly_nt35521 *ctx = to_truly_nt35521(panel); 345 346 if (ctx->enabled) 347 return 0; 348 349 gpiod_set_value_cansleep(ctx->blen_gpio, 1); 350 351 ctx->enabled = true; 352 return 0; 353} 354 355static int truly_nt35521_disable(struct drm_panel *panel) 356{ 357 struct truly_nt35521 *ctx = to_truly_nt35521(panel); 358 359 if (!ctx->enabled) 360 return 0; 361 362 gpiod_set_value_cansleep(ctx->blen_gpio, 0); 363 364 ctx->enabled = false; 365 return 0; 366} 367 368static const struct drm_display_mode truly_nt35521_mode = { 369 .clock = (720 + 232 + 20 + 112) * (1280 + 18 + 1 + 18) * 60 / 1000, 370 .hdisplay = 720, 371 .hsync_start = 720 + 232, 372 .hsync_end = 720 + 232 + 20, 373 .htotal = 720 + 232 + 20 + 112, 374 .vdisplay = 1280, 375 .vsync_start = 1280 + 18, 376 .vsync_end = 1280 + 18 + 1, 377 .vtotal = 1280 + 18 + 1 + 18, 378 .width_mm = 65, 379 .height_mm = 116, 380}; 381 382static int truly_nt35521_get_modes(struct drm_panel *panel, 383 struct drm_connector *connector) 384{ 385 struct drm_display_mode *mode; 386 387 mode = drm_mode_duplicate(connector->dev, &truly_nt35521_mode); 388 if (!mode) 389 return -ENOMEM; 390 391 drm_mode_set_name(mode); 392 393 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 394 connector->display_info.width_mm = mode->width_mm; 395 connector->display_info.height_mm = mode->height_mm; 396 drm_mode_probed_add(connector, mode); 397 398 return 1; 399} 400 401static const struct drm_panel_funcs truly_nt35521_panel_funcs = { 402 .prepare = truly_nt35521_prepare, 403 .unprepare = truly_nt35521_unprepare, 404 .enable = truly_nt35521_enable, 405 .disable = truly_nt35521_disable, 406 .get_modes = truly_nt35521_get_modes, 407}; 408 409static int truly_nt35521_bl_update_status(struct backlight_device *bl) 410{ 411 struct mipi_dsi_device *dsi = bl_get_data(bl); 412 u16 brightness = backlight_get_brightness(bl); 413 int ret; 414 415 ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness); 416 if (ret < 0) 417 return ret; 418 419 return 0; 420} 421 422static int truly_nt35521_bl_get_brightness(struct backlight_device *bl) 423{ 424 struct mipi_dsi_device *dsi = bl_get_data(bl); 425 u16 brightness; 426 int ret; 427 428 ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness); 429 if (ret < 0) 430 return ret; 431 432 return brightness & 0xff; 433} 434 435static const struct backlight_ops truly_nt35521_bl_ops = { 436 .update_status = truly_nt35521_bl_update_status, 437 .get_brightness = truly_nt35521_bl_get_brightness, 438}; 439 440static struct backlight_device * 441truly_nt35521_create_backlight(struct mipi_dsi_device *dsi) 442{ 443 struct device *dev = &dsi->dev; 444 const struct backlight_properties props = { 445 .type = BACKLIGHT_RAW, 446 .brightness = 255, 447 .max_brightness = 255, 448 }; 449 450 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 451 &truly_nt35521_bl_ops, &props); 452} 453 454static int truly_nt35521_probe(struct mipi_dsi_device *dsi) 455{ 456 struct device *dev = &dsi->dev; 457 struct truly_nt35521 *ctx; 458 int ret; 459 460 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 461 if (!ctx) 462 return -ENOMEM; 463 464 ctx->supplies[0].supply = "positive5"; 465 ctx->supplies[1].supply = "negative5"; 466 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), 467 ctx->supplies); 468 if (ret < 0) { 469 dev_err(dev, "Failed to get regulators: %d\n", ret); 470 return ret; 471 } 472 473 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 474 if (IS_ERR(ctx->reset_gpio)) 475 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 476 "Failed to get reset-gpios\n"); 477 478 ctx->blen_gpio = devm_gpiod_get(dev, "backlight", GPIOD_OUT_LOW); 479 if (IS_ERR(ctx->blen_gpio)) 480 return dev_err_probe(dev, PTR_ERR(ctx->blen_gpio), 481 "Failed to get backlight-gpios\n"); 482 483 ctx->dsi = dsi; 484 mipi_dsi_set_drvdata(dsi, ctx); 485 486 dsi->lanes = 4; 487 dsi->format = MIPI_DSI_FMT_RGB888; 488 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 489 MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET | 490 MIPI_DSI_CLOCK_NON_CONTINUOUS; 491 492 drm_panel_init(&ctx->panel, dev, &truly_nt35521_panel_funcs, 493 DRM_MODE_CONNECTOR_DSI); 494 495 ctx->panel.backlight = truly_nt35521_create_backlight(dsi); 496 if (IS_ERR(ctx->panel.backlight)) 497 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 498 "Failed to create backlight\n"); 499 500 drm_panel_add(&ctx->panel); 501 502 ret = mipi_dsi_attach(dsi); 503 if (ret < 0) { 504 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 505 drm_panel_remove(&ctx->panel); 506 return ret; 507 } 508 509 return 0; 510} 511 512static void truly_nt35521_remove(struct mipi_dsi_device *dsi) 513{ 514 struct truly_nt35521 *ctx = mipi_dsi_get_drvdata(dsi); 515 int ret; 516 517 ret = mipi_dsi_detach(dsi); 518 if (ret < 0) 519 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 520 521 drm_panel_remove(&ctx->panel); 522} 523 524static const struct of_device_id truly_nt35521_of_match[] = { 525 { .compatible = "sony,tulip-truly-nt35521" }, 526 { /* sentinel */ } 527}; 528MODULE_DEVICE_TABLE(of, truly_nt35521_of_match); 529 530static struct mipi_dsi_driver truly_nt35521_driver = { 531 .probe = truly_nt35521_probe, 532 .remove = truly_nt35521_remove, 533 .driver = { 534 .name = "panel-truly-nt35521", 535 .of_match_table = truly_nt35521_of_match, 536 }, 537}; 538module_mipi_dsi_driver(truly_nt35521_driver); 539 540MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>"); 541MODULE_DESCRIPTION("DRM driver for Sony Tulip Truly NT35521 panel"); 542MODULE_LICENSE("GPL v2"); 543