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