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