Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
GG Hou | fc79252 | 2020-03-16 15:35:49 +0800 | [diff] [blame] | 3 | * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 7 | |
| 8 | #include <linux/types.h> |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/fs.h> |
| 15 | #include <linux/delay.h> |
| 16 | #include <linux/i2c.h> |
| 17 | #include <linux/gpio.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/component.h> |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 20 | #include <linux/workqueue.h> |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 21 | #include <linux/of_gpio.h> |
| 22 | #include <linux/of_graph.h> |
| 23 | #include <linux/of_irq.h> |
| 24 | #include <linux/regulator/consumer.h> |
| 25 | #include <linux/firmware.h> |
| 26 | #include <linux/hdmi.h> |
| 27 | #include <drm/drmP.h> |
| 28 | #include <drm/drm_atomic.h> |
| 29 | #include <drm/drm_atomic_helper.h> |
| 30 | #include <drm/drm_edid.h> |
| 31 | #include <drm/drm_mipi_dsi.h> |
| 32 | #include <drm/drm_crtc_helper.h> |
| 33 | #include <linux/string.h> |
| 34 | |
| 35 | #define CFG_HPD_INTERRUPTS BIT(0) |
| 36 | #define CFG_EDID_INTERRUPTS BIT(1) |
| 37 | #define CFG_CEC_INTERRUPTS BIT(2) |
| 38 | #define CFG_VID_CHK_INTERRUPTS BIT(3) |
| 39 | |
| 40 | #define EDID_SEG_SIZE 256 |
| 41 | #define READ_BUF_MAX_SIZE 64 |
| 42 | #define WRITE_BUF_MAX_SIZE 64 |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 43 | |
| 44 | struct lt9611_reg_cfg { |
| 45 | u8 reg; |
| 46 | u8 val; |
| 47 | }; |
| 48 | |
| 49 | enum lt9611_fw_upgrade_status { |
| 50 | UPDATE_SUCCESS = 0, |
| 51 | UPDATE_RUNNING = 1, |
| 52 | UPDATE_FAILED = 2, |
| 53 | }; |
| 54 | |
| 55 | struct lt9611_vreg { |
| 56 | struct regulator *vreg; /* vreg handle */ |
| 57 | char vreg_name[32]; |
| 58 | int min_voltage; |
| 59 | int max_voltage; |
| 60 | int enable_load; |
| 61 | int disable_load; |
| 62 | int pre_on_sleep; |
| 63 | int post_on_sleep; |
| 64 | int pre_off_sleep; |
| 65 | int post_off_sleep; |
| 66 | }; |
| 67 | |
| 68 | struct lt9611_video_cfg { |
| 69 | u32 h_active; |
| 70 | u32 h_front_porch; |
| 71 | u32 h_pulse_width; |
| 72 | u32 h_back_porch; |
| 73 | bool h_polarity; |
| 74 | u32 v_active; |
| 75 | u32 v_front_porch; |
| 76 | u32 v_pulse_width; |
| 77 | u32 v_back_porch; |
| 78 | bool v_polarity; |
| 79 | u32 pclk_khz; |
| 80 | bool interlaced; |
| 81 | u32 vic; |
| 82 | enum hdmi_picture_aspect ar; |
| 83 | u32 num_of_lanes; |
| 84 | u32 num_of_intfs; |
| 85 | u8 scaninfo; |
| 86 | }; |
| 87 | |
| 88 | struct lt9611 { |
| 89 | struct device *dev; |
| 90 | struct drm_bridge bridge; |
| 91 | |
| 92 | struct device_node *host_node; |
| 93 | struct mipi_dsi_device *dsi; |
| 94 | struct drm_connector connector; |
| 95 | |
| 96 | u8 i2c_addr; |
| 97 | int irq; |
| 98 | bool ac_mode; |
| 99 | |
| 100 | u32 irq_gpio; |
| 101 | u32 reset_gpio; |
| 102 | u32 hdmi_ps_gpio; |
| 103 | u32 hdmi_en_gpio; |
| 104 | |
| 105 | unsigned int num_vreg; |
| 106 | struct lt9611_vreg *vreg_config; |
| 107 | |
| 108 | struct i2c_client *i2c_client; |
| 109 | |
| 110 | enum drm_connector_status status; |
| 111 | bool power_on; |
| 112 | |
| 113 | /* get display modes from device tree */ |
| 114 | bool non_pluggable; |
| 115 | u32 num_of_modes; |
| 116 | struct list_head mode_list; |
| 117 | |
| 118 | struct drm_display_mode curr_mode; |
| 119 | struct lt9611_video_cfg video_cfg; |
| 120 | |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 121 | struct workqueue_struct *wq; |
| 122 | struct work_struct work; |
| 123 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 124 | u8 edid_buf[EDID_SEG_SIZE]; |
| 125 | u8 i2c_wbuf[WRITE_BUF_MAX_SIZE]; |
| 126 | u8 i2c_rbuf[READ_BUF_MAX_SIZE]; |
| 127 | bool hdmi_mode; |
Yuan Zhao | 2a37e9d | 2020-05-07 13:19:50 +0800 | [diff] [blame] | 128 | bool hpd_support; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 129 | enum lt9611_fw_upgrade_status fw_status; |
| 130 | }; |
| 131 | |
| 132 | struct lt9611_timing_info { |
| 133 | u16 xres; |
| 134 | u16 yres; |
| 135 | u8 bpp; |
| 136 | u8 fps; |
| 137 | u8 lanes; |
| 138 | u8 intfs; |
| 139 | }; |
| 140 | |
| 141 | static struct lt9611_timing_info lt9611_supp_timing_cfg[] = { |
| 142 | {3840, 2160, 24, 30, 4, 2}, /* 3840x2160 24bit 30Hz 4Lane 2ports */ |
| 143 | {1920, 1080, 24, 60, 4, 1}, /* 1080P 24bit 60Hz 4lane 1port */ |
| 144 | {1920, 1080, 24, 30, 3, 1}, /* 1080P 24bit 30Hz 3lane 1port */ |
| 145 | {1920, 1080, 24, 24, 3, 1}, |
| 146 | {720, 480, 24, 60, 2, 1}, |
| 147 | {720, 576, 24, 50, 2, 1}, |
| 148 | {640, 480, 24, 60, 2, 1}, |
| 149 | {0xffff, 0xffff, 0xff, 0xff, 0xff}, |
| 150 | }; |
| 151 | |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 152 | void lt9611_hpd_work(struct work_struct *work) |
| 153 | { |
| 154 | char name[32], status[32]; |
| 155 | char *envp[5]; |
| 156 | char *event_string = "HOTPLUG=1"; |
| 157 | enum drm_connector_status last_status; |
| 158 | struct drm_device *dev = NULL; |
| 159 | struct lt9611 *pdata = container_of(work, struct lt9611, work); |
| 160 | |
| 161 | if (!pdata || !pdata->connector.funcs || |
| 162 | !pdata->connector.funcs->detect) |
| 163 | return; |
| 164 | |
| 165 | dev = pdata->connector.dev; |
| 166 | last_status = pdata->connector.status; |
| 167 | pdata->connector.status = |
| 168 | pdata->connector.funcs->detect(&pdata->connector, true); |
| 169 | |
| 170 | if (last_status == pdata->connector.status) |
| 171 | return; |
| 172 | |
| 173 | scnprintf(name, 32, "name=%s", |
| 174 | pdata->connector.name); |
| 175 | scnprintf(status, 32, "status=%s", |
| 176 | drm_get_connector_status_name(pdata->connector.status)); |
| 177 | pr_debug("[%s]:[%s]\n", name, status); |
| 178 | envp[0] = name; |
| 179 | envp[1] = status; |
| 180 | envp[2] = event_string; |
| 181 | envp[3] = NULL; |
| 182 | envp[4] = NULL; |
| 183 | kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, |
| 184 | envp); |
| 185 | } |
| 186 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 187 | static struct lt9611 *bridge_to_lt9611(struct drm_bridge *bridge) |
| 188 | { |
| 189 | return container_of(bridge, struct lt9611, bridge); |
| 190 | } |
| 191 | |
| 192 | static struct lt9611 *connector_to_lt9611(struct drm_connector *connector) |
| 193 | { |
| 194 | return container_of(connector, struct lt9611, connector); |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * Write one reg with more values; |
| 199 | * Reg -> value0, value1, value2. |
| 200 | */ |
| 201 | |
| 202 | static int lt9611_write(struct lt9611 *pdata, u8 reg, |
| 203 | const u8 *buf, int size) |
| 204 | { |
| 205 | struct i2c_client *client = pdata->i2c_client; |
| 206 | struct i2c_msg msg = { |
| 207 | .addr = client->addr, |
| 208 | .flags = 0, |
| 209 | .len = size + 1, |
| 210 | .buf = pdata->i2c_wbuf, |
| 211 | }; |
| 212 | |
| 213 | pdata->i2c_wbuf[0] = reg; |
| 214 | if (size > (WRITE_BUF_MAX_SIZE - 1)) { |
| 215 | pr_err("invalid write buffer size %d\n", size); |
| 216 | return -EINVAL; |
| 217 | } |
| 218 | |
| 219 | memcpy(pdata->i2c_wbuf + 1, buf, size); |
| 220 | |
| 221 | if (i2c_transfer(client->adapter, &msg, 1) < 1) { |
| 222 | pr_err("i2c write failed\n"); |
| 223 | return -EIO; |
| 224 | } |
| 225 | |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | /* |
| 230 | * Write one reg with one value; |
| 231 | * Reg -> value |
| 232 | */ |
| 233 | static int lt9611_write_byte(struct lt9611 *pdata, const u8 reg, u8 value) |
| 234 | { |
| 235 | struct i2c_client *client = pdata->i2c_client; |
| 236 | struct i2c_msg msg = { |
| 237 | .addr = client->addr, |
| 238 | .flags = 0, |
| 239 | .len = 2, |
| 240 | .buf = pdata->i2c_wbuf, |
| 241 | }; |
| 242 | |
| 243 | memset(pdata->i2c_wbuf, 0, WRITE_BUF_MAX_SIZE); |
| 244 | pdata->i2c_wbuf[0] = reg; |
| 245 | pdata->i2c_wbuf[1] = value; |
| 246 | |
| 247 | if (i2c_transfer(client->adapter, &msg, 1) < 1) { |
| 248 | pr_err("i2c write failed\n"); |
| 249 | return -EIO; |
| 250 | } |
| 251 | |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | /* |
| 256 | * Write more regs with more values; |
| 257 | * Reg1 -> value1 |
| 258 | * Reg2 -> value2 |
| 259 | */ |
| 260 | static void lt9611_write_array(struct lt9611 *pdata, |
| 261 | struct lt9611_reg_cfg *reg_arry, int size) |
| 262 | { |
| 263 | int i = 0; |
| 264 | |
| 265 | for (i = 0; i < size; i++) |
| 266 | lt9611_write_byte(pdata, reg_arry[i].reg, reg_arry[i].val); |
| 267 | } |
| 268 | |
| 269 | static int lt9611_read(struct lt9611 *pdata, u8 reg, char *buf, u32 size) |
| 270 | { |
| 271 | struct i2c_client *client = pdata->i2c_client; |
| 272 | struct i2c_msg msg[2] = { |
| 273 | { |
| 274 | .addr = client->addr, |
| 275 | .flags = 0, |
| 276 | .len = 1, |
| 277 | .buf = pdata->i2c_wbuf, |
| 278 | }, |
| 279 | { |
| 280 | .addr = client->addr, |
| 281 | .flags = I2C_M_RD, |
| 282 | .len = size, |
| 283 | .buf = pdata->i2c_rbuf, |
| 284 | } |
| 285 | }; |
| 286 | |
| 287 | memset(pdata->i2c_wbuf, 0x0, WRITE_BUF_MAX_SIZE); |
| 288 | memset(pdata->i2c_rbuf, 0x0, READ_BUF_MAX_SIZE); |
| 289 | pdata->i2c_wbuf[0] = reg; |
| 290 | |
| 291 | if (i2c_transfer(client->adapter, msg, 2) != 2) { |
| 292 | pr_err("i2c read failed\n"); |
| 293 | return -EIO; |
| 294 | } |
| 295 | |
| 296 | memcpy(buf, pdata->i2c_rbuf, size); |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | void lt9611_config(struct lt9611 *pdata) |
| 302 | { |
| 303 | struct lt9611_reg_cfg reg_cfg[] = { |
| 304 | {0xFF, 0x80}, |
| 305 | {0xEE, 0x01}, |
| 306 | {0x5E, 0xDF}, |
| 307 | {0x58, 0x00}, |
| 308 | {0x59, 0x50}, |
| 309 | {0x5A, 0x10}, |
| 310 | {0x5A, 0x00}, |
| 311 | }; |
| 312 | |
| 313 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 314 | } |
| 315 | |
| 316 | u8 lt9611_get_version(struct lt9611 *pdata) |
| 317 | { |
| 318 | u8 revison = 0; |
| 319 | |
| 320 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 321 | lt9611_write_byte(pdata, 0xEE, 0x01); |
| 322 | lt9611_write_byte(pdata, 0xFF, 0xB0); |
| 323 | |
| 324 | if (!lt9611_read(pdata, 0x21, &revison, 1)) |
| 325 | pr_info("LT9611 revison: 0x%x\n", revison); |
| 326 | else |
| 327 | pr_err("LT9611 get revison failed\n"); |
| 328 | |
| 329 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 330 | lt9611_write_byte(pdata, 0xEE, 0x00); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 331 | msleep(50); |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 332 | |
| 333 | return revison; |
| 334 | } |
| 335 | |
| 336 | void lt9611_flash_write_en(struct lt9611 *pdata) |
| 337 | { |
| 338 | struct lt9611_reg_cfg reg_cfg0[] = { |
| 339 | {0xFF, 0x81}, |
| 340 | {0x08, 0xBF}, |
| 341 | }; |
| 342 | |
| 343 | struct lt9611_reg_cfg reg_cfg1[] = { |
| 344 | {0xFF, 0x80}, |
| 345 | {0x5A, 0x04}, |
| 346 | {0x5A, 0x00}, |
| 347 | }; |
| 348 | |
| 349 | lt9611_write_array(pdata, reg_cfg0, ARRAY_SIZE(reg_cfg0)); |
| 350 | msleep(20); |
| 351 | lt9611_write_byte(pdata, 0x08, 0xFF); |
| 352 | msleep(20); |
| 353 | lt9611_write_array(pdata, reg_cfg1, ARRAY_SIZE(reg_cfg1)); |
| 354 | } |
| 355 | |
| 356 | void lt9611_block_erase(struct lt9611 *pdata) |
| 357 | { |
| 358 | struct lt9611_reg_cfg reg_cfg[] = { |
| 359 | {0xFF, 0x80}, |
| 360 | {0xEE, 0x01}, |
| 361 | {0x5A, 0x04}, |
| 362 | {0x5A, 0x00}, |
| 363 | {0x5B, 0x00}, |
| 364 | {0x5C, 0x00}, |
| 365 | {0x5D, 0x00}, |
| 366 | {0x5A, 0x01}, |
| 367 | {0x5A, 0x00}, |
| 368 | }; |
| 369 | |
| 370 | pr_info("LT9611 block erase\n"); |
| 371 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 372 | msleep(3000); |
| 373 | } |
| 374 | |
| 375 | void lt9611_flash_read_addr_set(struct lt9611 *pdata, u32 addr) |
| 376 | { |
| 377 | struct lt9611_reg_cfg reg_cfg[] = { |
| 378 | {0x5E, 0x5F}, |
| 379 | {0x5A, 0xA0}, |
| 380 | {0x5A, 0x80}, |
| 381 | {0x5B, (addr & 0xFF0000) >> 16}, |
| 382 | {0x5C, (addr & 0xFF00) >> 8}, |
| 383 | {0x5D, addr & 0xFF}, |
| 384 | {0x5A, 0x90}, |
| 385 | {0x5A, 0x80}, |
| 386 | {0x58, 0x21}, |
| 387 | }; |
| 388 | |
| 389 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 390 | } |
| 391 | |
| 392 | void lt9611_fw_read_back(struct lt9611 *pdata, u8 *buff, int size) |
| 393 | { |
| 394 | u8 page_data[32]; |
| 395 | int page_number = 0, i = 0, addr = 0; |
| 396 | |
| 397 | struct lt9611_reg_cfg reg_cfg[] = { |
| 398 | {0xFF, 0x80}, |
| 399 | {0xEE, 0x01}, |
| 400 | {0x5A, 0x84}, |
| 401 | {0x5A, 0x80}, |
| 402 | }; |
| 403 | /* |
| 404 | * Read 32 bytes once. |
| 405 | */ |
| 406 | page_number = size / 32; |
| 407 | if (size % 32) |
| 408 | page_number++; |
| 409 | |
| 410 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 411 | |
| 412 | for (i = 0; i < page_number; i++) { |
| 413 | memset(page_data, 0x0, 32); |
| 414 | lt9611_flash_read_addr_set(pdata, addr); |
| 415 | lt9611_read(pdata, 0x5F, page_data, 32); |
| 416 | memcpy(buff, page_data, 32); |
| 417 | buff += 32; |
| 418 | addr += 32; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | void lt9611_flash_write_config(struct lt9611 *pdata) |
| 423 | { |
| 424 | struct lt9611_reg_cfg reg_cfg[] = { |
| 425 | {0xFF, 0x80}, |
| 426 | {0x5E, 0xDF}, |
| 427 | {0x5A, 0x20}, |
| 428 | {0x5A, 0x00}, |
| 429 | {0x58, 0x21}, |
| 430 | }; |
| 431 | |
| 432 | lt9611_flash_write_en(pdata); |
| 433 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 434 | } |
| 435 | |
| 436 | void lt9611_flash_write_addr_set(struct lt9611 *pdata, u32 addr) |
| 437 | { |
| 438 | struct lt9611_reg_cfg reg_cfg[] = { |
| 439 | {0x5B, (addr & 0xFF0000) >> 16}, |
| 440 | {0x5C, (addr & 0xFF00) >> 8}, |
| 441 | {0x5D, addr & 0xFF}, |
| 442 | {0x5A, 0x10}, |
| 443 | {0x5A, 0x00}, |
| 444 | }; |
| 445 | |
| 446 | lt9611_write_array(pdata, reg_cfg, ARRAY_SIZE(reg_cfg)); |
| 447 | } |
| 448 | |
| 449 | void lt9611_firmware_write(struct lt9611 *pdata, const u8 *f_data, |
| 450 | int size) |
| 451 | { |
| 452 | u8 last_buf[32]; |
| 453 | int i = 0, page_size = 32; |
| 454 | int start_addr = 0, total_page = 0, rest_data = 0; |
| 455 | |
| 456 | total_page = size / page_size; |
| 457 | rest_data = size % page_size; |
| 458 | |
| 459 | for (i = 0; i < total_page; i++) { |
| 460 | lt9611_flash_write_config(pdata); |
| 461 | lt9611_write(pdata, 0x59, f_data, page_size); |
| 462 | lt9611_flash_write_addr_set(pdata, start_addr); |
| 463 | start_addr += page_size; |
| 464 | f_data += page_size; |
| 465 | msleep(20); |
| 466 | } |
| 467 | |
| 468 | if (rest_data > 0) { |
| 469 | memset(last_buf, 0xFF, 32); |
| 470 | memcpy(last_buf, f_data, rest_data); |
| 471 | lt9611_flash_write_config(pdata); |
| 472 | lt9611_write(pdata, 0x59, last_buf, page_size); |
| 473 | |
| 474 | lt9611_flash_write_addr_set(pdata, start_addr); |
| 475 | msleep(20); |
| 476 | } |
| 477 | msleep(20); |
| 478 | |
| 479 | pr_info("LT9611 FW write over, total size: %d, page: %d, reset: %d\n", |
| 480 | size, total_page, rest_data); |
| 481 | } |
| 482 | |
| 483 | void lt9611_firmware_upgrade(struct lt9611 *pdata, |
| 484 | const struct firmware *cfg) |
| 485 | { |
| 486 | int i = 0; |
| 487 | u8 *fw_read_data = NULL; |
| 488 | int data_len = (int)cfg->size; |
| 489 | |
| 490 | pr_info("LT9611 FW total size %d\n", data_len); |
| 491 | |
| 492 | fw_read_data = kzalloc(ALIGN(data_len, 32), GFP_KERNEL); |
| 493 | if (!fw_read_data) |
| 494 | return; |
| 495 | |
| 496 | pdata->fw_status = UPDATE_RUNNING; |
| 497 | lt9611_config(pdata); |
| 498 | |
| 499 | /* |
| 500 | * Need erase block 2 timess here. |
| 501 | * Sometimes, erase can fail. |
| 502 | * This is a workaroud. |
| 503 | */ |
| 504 | for (i = 0; i < 2; i++) |
| 505 | lt9611_block_erase(pdata); |
| 506 | |
| 507 | lt9611_firmware_write(pdata, cfg->data, data_len); |
| 508 | msleep(20); |
| 509 | lt9611_fw_read_back(pdata, fw_read_data, data_len); |
| 510 | |
| 511 | if (!memcmp(cfg->data, fw_read_data, data_len)) { |
| 512 | pdata->fw_status = UPDATE_SUCCESS; |
| 513 | pr_debug("LT9611 Firmware upgrade success.\n"); |
| 514 | } else { |
| 515 | pdata->fw_status = UPDATE_FAILED; |
| 516 | pr_err("LT9611 Firmware upgrade failed\n"); |
| 517 | } |
| 518 | |
| 519 | kfree(fw_read_data); |
| 520 | } |
| 521 | |
| 522 | static void lt9611_firmware_cb(const struct firmware *cfg, void *data) |
| 523 | { |
| 524 | struct lt9611 *pdata = (struct lt9611 *)data; |
| 525 | |
| 526 | if (!cfg) { |
| 527 | pr_err("LT9611 get firmware failed\n"); |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | lt9611_firmware_upgrade(pdata, cfg); |
| 532 | release_firmware(cfg); |
| 533 | } |
| 534 | |
| 535 | static int lt9611_parse_dt_modes(struct device_node *np, |
| 536 | struct list_head *head, |
| 537 | u32 *num_of_modes) |
| 538 | { |
| 539 | int rc = 0; |
| 540 | struct drm_display_mode *mode; |
| 541 | u32 mode_count = 0; |
| 542 | struct device_node *node = NULL; |
| 543 | struct device_node *root_node = NULL; |
| 544 | u32 h_front_porch, h_pulse_width, h_back_porch; |
| 545 | u32 v_front_porch, v_pulse_width, v_back_porch; |
| 546 | bool h_active_high, v_active_high; |
| 547 | u32 flags = 0; |
| 548 | |
| 549 | root_node = of_get_child_by_name(np, "lt,customize-modes"); |
| 550 | if (!root_node) { |
| 551 | root_node = of_parse_phandle(np, "lt,customize-modes", 0); |
| 552 | if (!root_node) { |
| 553 | pr_info("No entry present for lt,customize-modes\n"); |
| 554 | goto end; |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | for_each_child_of_node(root_node, node) { |
| 559 | rc = 0; |
| 560 | mode = kzalloc(sizeof(*mode), GFP_KERNEL); |
| 561 | if (!mode) { |
| 562 | pr_err("Out of memory\n"); |
| 563 | rc = -ENOMEM; |
| 564 | continue; |
| 565 | } |
| 566 | |
| 567 | rc = of_property_read_u32(node, "lt,mode-h-active", |
| 568 | &mode->hdisplay); |
| 569 | if (rc) { |
| 570 | pr_err("failed to read h-active, rc=%d\n", rc); |
| 571 | goto fail; |
| 572 | } |
| 573 | |
| 574 | rc = of_property_read_u32(node, "lt,mode-h-front-porch", |
| 575 | &h_front_porch); |
| 576 | if (rc) { |
| 577 | pr_err("failed to read h-front-porch, rc=%d\n", rc); |
| 578 | goto fail; |
| 579 | } |
| 580 | |
| 581 | rc = of_property_read_u32(node, "lt,mode-h-pulse-width", |
| 582 | &h_pulse_width); |
| 583 | if (rc) { |
| 584 | pr_err("failed to read h-pulse-width, rc=%d\n", rc); |
| 585 | goto fail; |
| 586 | } |
| 587 | |
| 588 | rc = of_property_read_u32(node, "lt,mode-h-back-porch", |
| 589 | &h_back_porch); |
| 590 | if (rc) { |
| 591 | pr_err("failed to read h-back-porch, rc=%d\n", rc); |
| 592 | goto fail; |
| 593 | } |
| 594 | |
| 595 | h_active_high = of_property_read_bool(node, |
| 596 | "lt,mode-h-active-high"); |
| 597 | |
| 598 | rc = of_property_read_u32(node, "lt,mode-v-active", |
| 599 | &mode->vdisplay); |
| 600 | if (rc) { |
| 601 | pr_err("failed to read v-active, rc=%d\n", rc); |
| 602 | goto fail; |
| 603 | } |
| 604 | |
| 605 | rc = of_property_read_u32(node, "lt,mode-v-front-porch", |
| 606 | &v_front_porch); |
| 607 | if (rc) { |
| 608 | pr_err("failed to read v-front-porch, rc=%d\n", rc); |
| 609 | goto fail; |
| 610 | } |
| 611 | |
| 612 | rc = of_property_read_u32(node, "lt,mode-v-pulse-width", |
| 613 | &v_pulse_width); |
| 614 | if (rc) { |
| 615 | pr_err("failed to read v-pulse-width, rc=%d\n", rc); |
| 616 | goto fail; |
| 617 | } |
| 618 | |
| 619 | rc = of_property_read_u32(node, "lt,mode-v-back-porch", |
| 620 | &v_back_porch); |
| 621 | if (rc) { |
| 622 | pr_err("failed to read v-back-porch, rc=%d\n", rc); |
| 623 | goto fail; |
| 624 | } |
| 625 | |
| 626 | v_active_high = of_property_read_bool(node, |
| 627 | "lt,mode-v-active-high"); |
| 628 | |
| 629 | rc = of_property_read_u32(node, "lt,mode-refresh-rate", |
| 630 | &mode->vrefresh); |
| 631 | if (rc) { |
| 632 | pr_err("failed to read refresh-rate, rc=%d\n", rc); |
| 633 | goto fail; |
| 634 | } |
| 635 | |
| 636 | rc = of_property_read_u32(node, "lt,mode-clock-in-khz", |
| 637 | &mode->clock); |
| 638 | if (rc) { |
| 639 | pr_err("failed to read clock, rc=%d\n", rc); |
| 640 | goto fail; |
| 641 | } |
| 642 | |
| 643 | mode->hsync_start = mode->hdisplay + h_front_porch; |
| 644 | mode->hsync_end = mode->hsync_start + h_pulse_width; |
| 645 | mode->htotal = mode->hsync_end + h_back_porch; |
| 646 | mode->vsync_start = mode->vdisplay + v_front_porch; |
| 647 | mode->vsync_end = mode->vsync_start + v_pulse_width; |
| 648 | mode->vtotal = mode->vsync_end + v_back_porch; |
| 649 | if (h_active_high) |
| 650 | flags |= DRM_MODE_FLAG_PHSYNC; |
| 651 | else |
| 652 | flags |= DRM_MODE_FLAG_NHSYNC; |
| 653 | if (v_active_high) |
| 654 | flags |= DRM_MODE_FLAG_PVSYNC; |
| 655 | else |
| 656 | flags |= DRM_MODE_FLAG_NVSYNC; |
| 657 | mode->flags = flags; |
| 658 | |
| 659 | if (!rc) { |
| 660 | mode_count++; |
| 661 | list_add_tail(&mode->head, head); |
| 662 | } |
| 663 | |
| 664 | drm_mode_set_name(mode); |
| 665 | |
| 666 | pr_debug("mode[%s] h[%d,%d,%d,%d] v[%d,%d,%d,%d] %d %x %dkHZ\n", |
| 667 | mode->name, mode->hdisplay, mode->hsync_start, |
| 668 | mode->hsync_end, mode->htotal, mode->vdisplay, |
| 669 | mode->vsync_start, mode->vsync_end, mode->vtotal, |
| 670 | mode->vrefresh, mode->flags, mode->clock); |
| 671 | fail: |
| 672 | if (rc) { |
| 673 | kfree(mode); |
| 674 | continue; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | if (num_of_modes) |
| 679 | *num_of_modes = mode_count; |
| 680 | |
| 681 | end: |
| 682 | return rc; |
| 683 | } |
| 684 | |
| 685 | |
| 686 | static int lt9611_parse_dt(struct device *dev, |
| 687 | struct lt9611 *pdata) |
| 688 | { |
| 689 | struct device_node *np = dev->of_node; |
| 690 | struct device_node *end_node; |
| 691 | int ret = 0; |
| 692 | |
| 693 | end_node = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0); |
| 694 | if (!end_node) { |
| 695 | pr_err("remote endpoint not found\n"); |
| 696 | return -ENODEV; |
| 697 | } |
| 698 | |
| 699 | pdata->host_node = of_graph_get_remote_port_parent(end_node); |
| 700 | of_node_put(end_node); |
| 701 | if (!pdata->host_node) { |
| 702 | pr_err("remote node not found\n"); |
| 703 | return -ENODEV; |
| 704 | } |
| 705 | of_node_put(pdata->host_node); |
| 706 | |
| 707 | pdata->irq_gpio = |
| 708 | of_get_named_gpio(np, "lt,irq-gpio", 0); |
| 709 | if (!gpio_is_valid(pdata->irq_gpio)) { |
| 710 | pr_err("irq gpio not specified\n"); |
| 711 | ret = -EINVAL; |
| 712 | } |
| 713 | pr_debug("irq_gpio=%d\n", pdata->irq_gpio); |
| 714 | |
| 715 | pdata->reset_gpio = |
| 716 | of_get_named_gpio(np, "lt,reset-gpio", 0); |
| 717 | if (!gpio_is_valid(pdata->reset_gpio)) { |
| 718 | pr_err("reset gpio not specified\n"); |
| 719 | ret = -EINVAL; |
| 720 | } |
| 721 | pr_debug("reset_gpio=%d\n", pdata->reset_gpio); |
| 722 | |
| 723 | pdata->hdmi_ps_gpio = |
| 724 | of_get_named_gpio(np, "lt,hdmi-ps-gpio", 0); |
| 725 | if (!gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 726 | pr_debug("hdmi ps gpio not specified\n"); |
| 727 | else |
| 728 | pr_debug("hdmi_ps_gpio=%d\n", pdata->hdmi_ps_gpio); |
| 729 | |
| 730 | pdata->hdmi_en_gpio = |
| 731 | of_get_named_gpio(np, "lt,hdmi-en-gpio", 0); |
| 732 | if (!gpio_is_valid(pdata->hdmi_en_gpio)) |
| 733 | pr_debug("hdmi en gpio not specified\n"); |
| 734 | else |
| 735 | pr_debug("hdmi_en_gpio=%d\n", pdata->hdmi_en_gpio); |
| 736 | |
| 737 | pdata->ac_mode = of_property_read_bool(np, "lt,ac-mode"); |
| 738 | pr_debug("ac_mode=%d\n", pdata->ac_mode); |
| 739 | |
| 740 | pdata->non_pluggable = of_property_read_bool(np, "lt,non-pluggable"); |
| 741 | pr_debug("non_pluggable = %d\n", pdata->non_pluggable); |
| 742 | if (pdata->non_pluggable) { |
| 743 | INIT_LIST_HEAD(&pdata->mode_list); |
| 744 | ret = lt9611_parse_dt_modes(np, |
| 745 | &pdata->mode_list, &pdata->num_of_modes); |
| 746 | } |
| 747 | |
| 748 | return ret; |
| 749 | } |
| 750 | |
| 751 | static int lt9611_gpio_configure(struct lt9611 *pdata, bool on) |
| 752 | { |
| 753 | int ret = 0; |
| 754 | |
| 755 | if (on) { |
| 756 | ret = gpio_request(pdata->reset_gpio, |
| 757 | "lt9611-reset-gpio"); |
| 758 | if (ret) { |
| 759 | pr_err("lt9611 reset gpio request failed\n"); |
| 760 | goto error; |
| 761 | } |
| 762 | |
| 763 | ret = gpio_direction_output(pdata->reset_gpio, 0); |
| 764 | if (ret) { |
| 765 | pr_err("lt9611 reset gpio direction failed\n"); |
| 766 | goto reset_error; |
| 767 | } |
| 768 | |
| 769 | if (gpio_is_valid(pdata->hdmi_en_gpio)) { |
| 770 | ret = gpio_request(pdata->hdmi_en_gpio, |
| 771 | "lt9611-hdmi-en-gpio"); |
| 772 | if (ret) { |
| 773 | pr_err("lt9611 hdmi en gpio request failed\n"); |
| 774 | goto reset_error; |
| 775 | } |
| 776 | |
| 777 | ret = gpio_direction_output(pdata->hdmi_en_gpio, 1); |
| 778 | if (ret) { |
| 779 | pr_err("lt9611 hdmi en gpio direction failed\n"); |
| 780 | goto hdmi_en_error; |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) { |
| 785 | ret = gpio_request(pdata->hdmi_ps_gpio, |
| 786 | "lt9611-hdmi-ps-gpio"); |
| 787 | if (ret) { |
| 788 | pr_err("lt9611 hdmi ps gpio request failed\n"); |
| 789 | goto hdmi_en_error; |
| 790 | } |
| 791 | |
| 792 | ret = gpio_direction_input(pdata->hdmi_ps_gpio); |
| 793 | if (ret) { |
| 794 | pr_err("lt9611 hdmi ps gpio direction failed\n"); |
| 795 | goto hdmi_ps_error; |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | ret = gpio_request(pdata->irq_gpio, "lt9611-irq-gpio"); |
| 800 | if (ret) { |
| 801 | pr_err("lt9611 irq gpio request failed\n"); |
| 802 | goto hdmi_ps_error; |
| 803 | } |
| 804 | |
| 805 | ret = gpio_direction_input(pdata->irq_gpio); |
| 806 | if (ret) { |
| 807 | pr_err("lt9611 irq gpio direction failed\n"); |
| 808 | goto irq_error; |
| 809 | } |
| 810 | } else { |
| 811 | gpio_free(pdata->irq_gpio); |
| 812 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 813 | gpio_free(pdata->hdmi_ps_gpio); |
| 814 | if (gpio_is_valid(pdata->hdmi_en_gpio)) |
| 815 | gpio_free(pdata->hdmi_en_gpio); |
| 816 | gpio_free(pdata->reset_gpio); |
| 817 | } |
| 818 | |
| 819 | return ret; |
| 820 | |
| 821 | |
| 822 | irq_error: |
| 823 | gpio_free(pdata->irq_gpio); |
| 824 | hdmi_ps_error: |
| 825 | if (gpio_is_valid(pdata->hdmi_ps_gpio)) |
| 826 | gpio_free(pdata->hdmi_ps_gpio); |
| 827 | hdmi_en_error: |
| 828 | if (gpio_is_valid(pdata->hdmi_en_gpio)) |
| 829 | gpio_free(pdata->hdmi_en_gpio); |
| 830 | reset_error: |
| 831 | gpio_free(pdata->reset_gpio); |
| 832 | error: |
| 833 | return ret; |
| 834 | } |
| 835 | |
| 836 | static int lt9611_read_device_id(struct lt9611 *pdata) |
| 837 | { |
| 838 | u8 rev0 = 0, rev1 = 0; |
| 839 | int ret = 0; |
| 840 | |
| 841 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 842 | lt9611_write_byte(pdata, 0xEE, 0x01); |
| 843 | lt9611_write_byte(pdata, 0xFF, 0x81); |
| 844 | |
| 845 | if (!lt9611_read(pdata, 0x00, &rev0, 1) && |
| 846 | !lt9611_read(pdata, 0x01, &rev1, 1)) { |
| 847 | pr_info("LT9611 id: 0x%x\n", (rev0 << 8) | rev1); |
| 848 | } else { |
| 849 | pr_err("LT9611 get id failed\n"); |
| 850 | ret = -1; |
| 851 | } |
| 852 | |
| 853 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 854 | lt9611_write_byte(pdata, 0xEE, 0x00); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 855 | msleep(50); |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 856 | |
| 857 | return ret; |
| 858 | } |
| 859 | |
| 860 | static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id) |
| 861 | { |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 862 | u8 irq_status = 0, hpd_status = 0; |
| 863 | struct lt9611 *pdata = (struct lt9611 *)dev_id; |
| 864 | |
| 865 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 866 | lt9611_write_byte(pdata, 0xEE, 0x01); |
| 867 | lt9611_write_byte(pdata, 0xFF, 0xB0); |
| 868 | if (!lt9611_read(pdata, 0x22, &irq_status, 1)) { |
| 869 | pr_debug("irq status 0x%x\n", irq_status); |
| 870 | if (irq_status) { |
| 871 | lt9611_write_byte(pdata, 0x22, 0); |
| 872 | lt9611_read(pdata, 0x23, &hpd_status, 1); |
| 873 | pr_debug("irq hpd status 0x%x\n", hpd_status); |
| 874 | } |
| 875 | } else |
| 876 | pr_err("get irq status failed\n"); |
| 877 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 878 | lt9611_write_byte(pdata, 0xEE, 0x00); |
| 879 | |
| 880 | msleep(50); |
| 881 | if (irq_status & (BIT(0) | BIT(1))) |
| 882 | queue_work(pdata->wq, &pdata->work); |
| 883 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 884 | return IRQ_HANDLED; |
| 885 | } |
| 886 | |
| 887 | static void lt9611_reset(struct lt9611 *pdata, bool on_off) |
| 888 | { |
| 889 | pr_debug("reset: %d\n", on_off); |
| 890 | if (on_off) { |
| 891 | gpio_set_value(pdata->reset_gpio, 1); |
| 892 | msleep(20); |
| 893 | gpio_set_value(pdata->reset_gpio, 0); |
| 894 | msleep(20); |
| 895 | gpio_set_value(pdata->reset_gpio, 1); |
Shaoqi,Li | edd0435 | 2020-05-15 15:24:37 +0800 | [diff] [blame] | 896 | msleep(180); |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 897 | } else { |
| 898 | gpio_set_value(pdata->reset_gpio, 0); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | static void lt9611_assert_5v(struct lt9611 *pdata) |
| 903 | { |
| 904 | if (gpio_is_valid(pdata->hdmi_en_gpio)) { |
| 905 | gpio_set_value(pdata->hdmi_en_gpio, 1); |
| 906 | msleep(20); |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | static int lt9611_config_vreg(struct device *dev, |
| 911 | struct lt9611_vreg *in_vreg, int num_vreg, bool config) |
| 912 | { |
| 913 | int i = 0, rc = 0; |
| 914 | struct lt9611_vreg *curr_vreg = NULL; |
| 915 | |
| 916 | if (!in_vreg || !num_vreg) |
| 917 | return rc; |
| 918 | |
| 919 | if (config) { |
| 920 | for (i = 0; i < num_vreg; i++) { |
| 921 | curr_vreg = &in_vreg[i]; |
| 922 | curr_vreg->vreg = regulator_get(dev, |
| 923 | curr_vreg->vreg_name); |
| 924 | rc = PTR_RET(curr_vreg->vreg); |
| 925 | if (rc) { |
| 926 | pr_err("%s get failed. rc=%d\n", |
| 927 | curr_vreg->vreg_name, rc); |
| 928 | curr_vreg->vreg = NULL; |
| 929 | goto vreg_get_fail; |
| 930 | } |
| 931 | |
| 932 | rc = regulator_set_voltage( |
| 933 | curr_vreg->vreg, |
| 934 | curr_vreg->min_voltage, |
| 935 | curr_vreg->max_voltage); |
| 936 | if (rc < 0) { |
| 937 | pr_err("%s set vltg fail\n", |
| 938 | curr_vreg->vreg_name); |
| 939 | goto vreg_set_voltage_fail; |
| 940 | } |
| 941 | } |
| 942 | } else { |
| 943 | for (i = num_vreg-1; i >= 0; i--) { |
| 944 | curr_vreg = &in_vreg[i]; |
| 945 | if (curr_vreg->vreg) { |
| 946 | regulator_set_voltage(curr_vreg->vreg, |
| 947 | 0, curr_vreg->max_voltage); |
| 948 | |
| 949 | regulator_put(curr_vreg->vreg); |
| 950 | curr_vreg->vreg = NULL; |
| 951 | } |
| 952 | } |
| 953 | } |
| 954 | return 0; |
| 955 | |
| 956 | vreg_unconfig: |
| 957 | regulator_set_load(curr_vreg->vreg, 0); |
| 958 | |
| 959 | vreg_set_voltage_fail: |
| 960 | regulator_put(curr_vreg->vreg); |
| 961 | curr_vreg->vreg = NULL; |
| 962 | |
| 963 | vreg_get_fail: |
| 964 | for (i--; i >= 0; i--) { |
| 965 | curr_vreg = &in_vreg[i]; |
| 966 | goto vreg_unconfig; |
| 967 | } |
| 968 | return rc; |
| 969 | } |
| 970 | |
| 971 | static int lt9611_get_dt_supply(struct device *dev, |
| 972 | struct lt9611 *pdata) |
| 973 | { |
| 974 | int i = 0, rc = 0; |
| 975 | u32 tmp = 0; |
| 976 | struct device_node *of_node = NULL, *supply_root_node = NULL; |
| 977 | struct device_node *supply_node = NULL; |
| 978 | |
| 979 | if (!dev || !pdata) { |
| 980 | pr_err("invalid input param dev:%pK pdata:%pK\n", dev, pdata); |
| 981 | return -EINVAL; |
| 982 | } |
| 983 | |
| 984 | of_node = dev->of_node; |
| 985 | |
| 986 | pdata->num_vreg = 0; |
| 987 | supply_root_node = of_get_child_by_name(of_node, |
| 988 | "lt,supply-entries"); |
| 989 | if (!supply_root_node) { |
| 990 | pr_info("no supply entry present\n"); |
| 991 | return 0; |
| 992 | } |
| 993 | |
| 994 | pdata->num_vreg = of_get_available_child_count(supply_root_node); |
| 995 | if (pdata->num_vreg == 0) { |
| 996 | pr_info("no vreg present\n"); |
| 997 | return 0; |
| 998 | } |
| 999 | |
| 1000 | pr_debug("vreg found. count=%d\n", pdata->num_vreg); |
| 1001 | pdata->vreg_config = devm_kzalloc(dev, sizeof(struct lt9611_vreg) * |
| 1002 | pdata->num_vreg, GFP_KERNEL); |
| 1003 | if (!pdata->vreg_config) |
| 1004 | return -ENOMEM; |
| 1005 | |
| 1006 | for_each_available_child_of_node(supply_root_node, supply_node) { |
| 1007 | const char *st = NULL; |
| 1008 | |
| 1009 | rc = of_property_read_string(supply_node, |
| 1010 | "lt,supply-name", &st); |
| 1011 | if (rc) { |
| 1012 | pr_err("error reading name. rc=%d\n", rc); |
| 1013 | goto error; |
| 1014 | } |
| 1015 | |
| 1016 | strlcpy(pdata->vreg_config[i].vreg_name, st, |
| 1017 | sizeof(pdata->vreg_config[i].vreg_name)); |
| 1018 | |
| 1019 | rc = of_property_read_u32(supply_node, |
| 1020 | "lt,supply-min-voltage", &tmp); |
| 1021 | if (rc) { |
| 1022 | pr_err("error reading min volt. rc=%d\n", rc); |
| 1023 | goto error; |
| 1024 | } |
| 1025 | pdata->vreg_config[i].min_voltage = tmp; |
| 1026 | |
| 1027 | rc = of_property_read_u32(supply_node, |
| 1028 | "lt,supply-max-voltage", &tmp); |
| 1029 | if (rc) { |
| 1030 | pr_err("error reading max volt. rc=%d\n", rc); |
| 1031 | goto error; |
| 1032 | } |
| 1033 | pdata->vreg_config[i].max_voltage = tmp; |
| 1034 | |
| 1035 | rc = of_property_read_u32(supply_node, |
| 1036 | "lt,supply-enable-load", &tmp); |
| 1037 | if (rc) |
| 1038 | pr_debug("no supply enable load value. rc=%d\n", rc); |
| 1039 | |
| 1040 | pdata->vreg_config[i].enable_load = (!rc ? tmp : 0); |
| 1041 | |
| 1042 | rc = of_property_read_u32(supply_node, |
| 1043 | "lt,supply-disable-load", &tmp); |
| 1044 | if (rc) |
| 1045 | pr_debug("no supply disable load value. rc=%d\n", rc); |
| 1046 | |
| 1047 | pdata->vreg_config[i].disable_load = (!rc ? tmp : 0); |
| 1048 | |
| 1049 | rc = of_property_read_u32(supply_node, |
| 1050 | "lt,supply-pre-on-sleep", &tmp); |
| 1051 | if (rc) |
| 1052 | pr_debug("no supply pre on sleep value. rc=%d\n", rc); |
| 1053 | |
| 1054 | pdata->vreg_config[i].pre_on_sleep = (!rc ? tmp : 0); |
| 1055 | |
| 1056 | rc = of_property_read_u32(supply_node, |
| 1057 | "lt,supply-pre-off-sleep", &tmp); |
| 1058 | if (rc) |
| 1059 | pr_debug("no supply pre off sleep value. rc=%d\n", rc); |
| 1060 | |
| 1061 | pdata->vreg_config[i].pre_off_sleep = (!rc ? tmp : 0); |
| 1062 | |
| 1063 | rc = of_property_read_u32(supply_node, |
| 1064 | "lt,supply-post-on-sleep", &tmp); |
| 1065 | if (rc) |
| 1066 | pr_debug("no supply post on sleep value. rc=%d\n", rc); |
| 1067 | |
| 1068 | pdata->vreg_config[i].post_on_sleep = (!rc ? tmp : 0); |
| 1069 | |
| 1070 | rc = of_property_read_u32(supply_node, |
| 1071 | "lt,supply-post-off-sleep", &tmp); |
| 1072 | if (rc) |
| 1073 | pr_debug("no supply post off sleep value. rc=%d\n", rc); |
| 1074 | |
| 1075 | pdata->vreg_config[i].post_off_sleep = (!rc ? tmp : 0); |
| 1076 | |
| 1077 | pr_debug("%s min=%d, max=%d, enable=%d, disable=%d\n", |
| 1078 | pdata->vreg_config[i].vreg_name, |
| 1079 | pdata->vreg_config[i].min_voltage, |
| 1080 | pdata->vreg_config[i].max_voltage, |
| 1081 | pdata->vreg_config[i].enable_load, |
| 1082 | pdata->vreg_config[i].disable_load); |
| 1083 | ++i; |
| 1084 | |
| 1085 | rc = 0; |
| 1086 | } |
| 1087 | |
| 1088 | rc = lt9611_config_vreg(dev, |
| 1089 | pdata->vreg_config, pdata->num_vreg, true); |
| 1090 | if (rc) |
| 1091 | goto error; |
| 1092 | |
| 1093 | return rc; |
| 1094 | |
| 1095 | error: |
| 1096 | if (pdata->vreg_config) { |
| 1097 | devm_kfree(dev, pdata->vreg_config); |
| 1098 | pdata->vreg_config = NULL; |
| 1099 | pdata->num_vreg = 0; |
| 1100 | } |
| 1101 | |
| 1102 | return rc; |
| 1103 | } |
| 1104 | |
| 1105 | static void lt9611_put_dt_supply(struct device *dev, |
| 1106 | struct lt9611 *pdata) |
| 1107 | { |
| 1108 | if (!dev || !pdata) { |
| 1109 | pr_err("invalid input param dev:%pK pdata:%pK\n", dev, pdata); |
| 1110 | return; |
| 1111 | } |
| 1112 | |
| 1113 | lt9611_config_vreg(dev, |
| 1114 | pdata->vreg_config, pdata->num_vreg, false); |
| 1115 | |
| 1116 | if (pdata->vreg_config) { |
| 1117 | devm_kfree(dev, pdata->vreg_config); |
| 1118 | pdata->vreg_config = NULL; |
| 1119 | } |
| 1120 | pdata->num_vreg = 0; |
| 1121 | } |
| 1122 | |
| 1123 | static int lt9611_enable_vreg(struct lt9611 *pdata, int enable) |
| 1124 | { |
| 1125 | int i = 0, rc = 0; |
| 1126 | bool need_sleep; |
| 1127 | struct lt9611_vreg *in_vreg = pdata->vreg_config; |
| 1128 | int num_vreg = pdata->num_vreg; |
| 1129 | |
| 1130 | if (enable) { |
| 1131 | for (i = 0; i < num_vreg; i++) { |
| 1132 | rc = PTR_RET(in_vreg[i].vreg); |
| 1133 | if (rc) { |
| 1134 | pr_err("%s regulator error. rc=%d\n", |
| 1135 | in_vreg[i].vreg_name, rc); |
| 1136 | goto vreg_set_opt_mode_fail; |
| 1137 | } |
| 1138 | |
| 1139 | need_sleep = !regulator_is_enabled(in_vreg[i].vreg); |
| 1140 | if (in_vreg[i].pre_on_sleep && need_sleep) |
| 1141 | usleep_range(in_vreg[i].pre_on_sleep * 1000, |
| 1142 | in_vreg[i].pre_on_sleep * 1000); |
| 1143 | |
| 1144 | rc = regulator_set_load(in_vreg[i].vreg, |
| 1145 | in_vreg[i].enable_load); |
| 1146 | if (rc < 0) { |
| 1147 | pr_err("%s set opt m fail\n", |
| 1148 | in_vreg[i].vreg_name); |
| 1149 | goto vreg_set_opt_mode_fail; |
| 1150 | } |
| 1151 | |
| 1152 | rc = regulator_enable(in_vreg[i].vreg); |
| 1153 | if (in_vreg[i].post_on_sleep && need_sleep) |
| 1154 | usleep_range(in_vreg[i].post_on_sleep * 1000, |
| 1155 | in_vreg[i].post_on_sleep * 1000); |
| 1156 | if (rc < 0) { |
| 1157 | pr_err("%s enable failed\n", |
| 1158 | in_vreg[i].vreg_name); |
| 1159 | goto disable_vreg; |
| 1160 | } |
| 1161 | } |
| 1162 | } else { |
| 1163 | for (i = num_vreg-1; i >= 0; i--) { |
| 1164 | if (in_vreg[i].pre_off_sleep) |
| 1165 | usleep_range(in_vreg[i].pre_off_sleep * 1000, |
| 1166 | in_vreg[i].pre_off_sleep * 1000); |
| 1167 | |
| 1168 | regulator_set_load(in_vreg[i].vreg, |
| 1169 | in_vreg[i].disable_load); |
| 1170 | regulator_disable(in_vreg[i].vreg); |
| 1171 | |
| 1172 | if (in_vreg[i].post_off_sleep) |
| 1173 | usleep_range(in_vreg[i].post_off_sleep * 1000, |
| 1174 | in_vreg[i].post_off_sleep * 1000); |
| 1175 | } |
| 1176 | } |
| 1177 | return rc; |
| 1178 | |
| 1179 | disable_vreg: |
| 1180 | regulator_set_load(in_vreg[i].vreg, in_vreg[i].disable_load); |
| 1181 | |
| 1182 | vreg_set_opt_mode_fail: |
| 1183 | for (i--; i >= 0; i--) { |
| 1184 | if (in_vreg[i].pre_off_sleep) |
| 1185 | usleep_range(in_vreg[i].pre_off_sleep * 1000, |
| 1186 | in_vreg[i].pre_off_sleep * 1000); |
| 1187 | |
| 1188 | regulator_set_load(in_vreg[i].vreg, |
| 1189 | in_vreg[i].disable_load); |
| 1190 | regulator_disable(in_vreg[i].vreg); |
| 1191 | |
| 1192 | if (in_vreg[i].post_off_sleep) |
| 1193 | usleep_range(in_vreg[i].post_off_sleep * 1000, |
| 1194 | in_vreg[i].post_off_sleep * 1000); |
| 1195 | } |
| 1196 | |
| 1197 | return rc; |
| 1198 | } |
| 1199 | |
| 1200 | static struct lt9611_timing_info *lt9611_get_supported_timing( |
| 1201 | struct drm_display_mode *mode) |
| 1202 | { |
| 1203 | int i = 0; |
| 1204 | |
| 1205 | while (lt9611_supp_timing_cfg[i].xres != 0xffff) { |
| 1206 | if (lt9611_supp_timing_cfg[i].xres == mode->hdisplay && |
| 1207 | lt9611_supp_timing_cfg[i].yres == mode->vdisplay && |
| 1208 | lt9611_supp_timing_cfg[i].fps == |
| 1209 | drm_mode_vrefresh(mode)) { |
| 1210 | return <9611_supp_timing_cfg[i]; |
| 1211 | } |
| 1212 | i++; |
| 1213 | } |
| 1214 | |
| 1215 | return NULL; |
| 1216 | } |
| 1217 | |
| 1218 | /* TODO: intf/lane number needs info from both DSI host and client */ |
| 1219 | static int lt9611_get_intf_num(struct lt9611 *pdata, |
| 1220 | struct drm_display_mode *mode) |
| 1221 | { |
| 1222 | int num_of_intfs = 0; |
| 1223 | struct lt9611_timing_info *timing = |
| 1224 | lt9611_get_supported_timing(mode); |
| 1225 | |
| 1226 | if (timing) |
| 1227 | num_of_intfs = timing->intfs; |
| 1228 | else { |
| 1229 | pr_err("interface number not defined by bridge chip\n"); |
| 1230 | num_of_intfs = 0; |
| 1231 | } |
| 1232 | |
| 1233 | return num_of_intfs; |
| 1234 | } |
| 1235 | |
| 1236 | static int lt9611_get_lane_num(struct lt9611 *pdata, |
| 1237 | struct drm_display_mode *mode) |
| 1238 | { |
| 1239 | int num_of_lanes = 0; |
| 1240 | struct lt9611_timing_info *timing = |
| 1241 | lt9611_get_supported_timing(mode); |
| 1242 | |
| 1243 | if (timing) |
| 1244 | num_of_lanes = timing->lanes; |
| 1245 | else { |
| 1246 | pr_err("lane number not defined by bridge chip\n"); |
| 1247 | num_of_lanes = 0; |
| 1248 | } |
| 1249 | |
| 1250 | return num_of_lanes; |
| 1251 | } |
| 1252 | |
| 1253 | static void lt9611_get_video_cfg(struct lt9611 *pdata, |
| 1254 | struct drm_display_mode *mode, |
| 1255 | struct lt9611_video_cfg *video_cfg) |
| 1256 | { |
| 1257 | int rc = 0; |
| 1258 | struct hdmi_avi_infoframe avi_frame; |
| 1259 | |
| 1260 | memset(&avi_frame, 0, sizeof(avi_frame)); |
| 1261 | |
| 1262 | video_cfg->h_active = mode->hdisplay; |
| 1263 | video_cfg->v_active = mode->vdisplay; |
| 1264 | video_cfg->h_front_porch = mode->hsync_start - mode->hdisplay; |
| 1265 | video_cfg->v_front_porch = mode->vsync_start - mode->vdisplay; |
| 1266 | video_cfg->h_back_porch = mode->htotal - mode->hsync_end; |
| 1267 | video_cfg->v_back_porch = mode->vtotal - mode->vsync_end; |
| 1268 | video_cfg->h_pulse_width = mode->hsync_end - mode->hsync_start; |
| 1269 | video_cfg->v_pulse_width = mode->vsync_end - mode->vsync_start; |
| 1270 | video_cfg->pclk_khz = mode->clock; |
| 1271 | |
| 1272 | video_cfg->h_polarity = !!(mode->flags & DRM_MODE_FLAG_PHSYNC); |
| 1273 | video_cfg->v_polarity = !!(mode->flags & DRM_MODE_FLAG_PVSYNC); |
| 1274 | |
| 1275 | video_cfg->num_of_lanes = lt9611_get_lane_num(pdata, mode); |
| 1276 | video_cfg->num_of_intfs = lt9611_get_intf_num(pdata, mode); |
| 1277 | |
| 1278 | pr_debug("video=h[%d,%d,%d,%d] v[%d,%d,%d,%d] pclk=%d lane=%d intf=%d\n", |
| 1279 | video_cfg->h_active, video_cfg->h_front_porch, |
| 1280 | video_cfg->h_pulse_width, video_cfg->h_back_porch, |
| 1281 | video_cfg->v_active, video_cfg->v_front_porch, |
| 1282 | video_cfg->v_pulse_width, video_cfg->v_back_porch, |
| 1283 | video_cfg->pclk_khz, video_cfg->num_of_lanes, |
| 1284 | video_cfg->num_of_intfs); |
| 1285 | |
| 1286 | rc = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame, mode, false); |
| 1287 | if (rc) { |
| 1288 | pr_err("get avi frame failed ret=%d\n", rc); |
| 1289 | } else { |
| 1290 | video_cfg->scaninfo = avi_frame.scan_mode; |
| 1291 | video_cfg->ar = avi_frame.picture_aspect; |
| 1292 | video_cfg->vic = avi_frame.video_code; |
| 1293 | pr_debug("scaninfo=%d ar=%d vic=%d\n", |
| 1294 | video_cfg->scaninfo, video_cfg->ar, video_cfg->vic); |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | /* connector funcs */ |
| 1299 | static enum drm_connector_status |
| 1300 | lt9611_connector_detect(struct drm_connector *connector, bool force) |
| 1301 | { |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1302 | u8 hpd_status = 0; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1303 | struct lt9611 *pdata = connector_to_lt9611(connector); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1304 | |
| 1305 | pdata->status = connector_status_disconnected; |
Yuan Zhao | 2a37e9d | 2020-05-07 13:19:50 +0800 | [diff] [blame] | 1306 | if (force && pdata->hpd_support) { |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1307 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 1308 | lt9611_write_byte(pdata, 0xEE, 0x01); |
| 1309 | lt9611_write_byte(pdata, 0xFF, 0xB0); |
| 1310 | if (!lt9611_read(pdata, 0x23, &hpd_status, 1)) { |
| 1311 | if (hpd_status & BIT(1)) |
| 1312 | pdata->status = connector_status_connected; |
| 1313 | pr_debug("hpd status %x\n", hpd_status); |
| 1314 | } else |
| 1315 | pr_err("read hpd status failed\n"); |
| 1316 | lt9611_write_byte(pdata, 0xFF, 0x80); |
| 1317 | lt9611_write_byte(pdata, 0xEE, 0x00); |
| 1318 | msleep(50); |
| 1319 | } else |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1320 | pdata->status = connector_status_connected; |
| 1321 | |
| 1322 | return pdata->status; |
| 1323 | } |
| 1324 | |
| 1325 | static int lt9611_read_edid(struct lt9611 *pdata) |
| 1326 | { |
| 1327 | return 0; |
| 1328 | } |
| 1329 | |
| 1330 | /* TODO: add support for more extension blocks */ |
| 1331 | static int lt9611_get_edid_block(void *data, u8 *buf, unsigned int block, |
| 1332 | size_t len) |
| 1333 | { |
| 1334 | |
| 1335 | pr_info("get edid block: block=%d, len=%d\n", block, (int)len); |
| 1336 | |
| 1337 | return 0; |
| 1338 | } |
| 1339 | |
| 1340 | static void lt9611_set_preferred_mode(struct drm_connector *connector) |
| 1341 | { |
| 1342 | struct lt9611 *pdata = connector_to_lt9611(connector); |
| 1343 | struct drm_display_mode *mode; |
| 1344 | const char *string; |
| 1345 | |
| 1346 | /* use specified mode as preferred */ |
| 1347 | if (!of_property_read_string(pdata->dev->of_node, |
| 1348 | "lt,preferred-mode", &string)) { |
| 1349 | list_for_each_entry(mode, &connector->probed_modes, head) { |
| 1350 | if (!strcmp(mode->name, string)) |
| 1351 | mode->type |= DRM_MODE_TYPE_PREFERRED; |
| 1352 | } |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | static int lt9611_connector_get_modes(struct drm_connector *connector) |
| 1357 | { |
| 1358 | struct lt9611 *pdata = connector_to_lt9611(connector); |
| 1359 | struct drm_display_mode *mode, *m; |
| 1360 | unsigned int count = 0; |
| 1361 | |
| 1362 | if (pdata->non_pluggable) { |
| 1363 | list_for_each_entry(mode, &pdata->mode_list, head) { |
| 1364 | m = drm_mode_duplicate(connector->dev, mode); |
| 1365 | if (!m) { |
| 1366 | pr_err("failed to add hdmi mode %dx%d\n", |
| 1367 | mode->hdisplay, mode->vdisplay); |
| 1368 | break; |
| 1369 | } |
| 1370 | drm_mode_probed_add(connector, m); |
| 1371 | } |
| 1372 | count = pdata->num_of_modes; |
| 1373 | } else { |
| 1374 | struct edid *edid; |
| 1375 | |
| 1376 | edid = drm_do_get_edid(connector, lt9611_get_edid_block, pdata); |
| 1377 | |
| 1378 | drm_connector_update_edid_property(connector, edid); |
| 1379 | count = drm_add_edid_modes(connector, edid); |
| 1380 | |
| 1381 | pdata->hdmi_mode = drm_detect_hdmi_monitor(edid); |
| 1382 | pr_info("hdmi_mode = %d\n", pdata->hdmi_mode); |
| 1383 | |
| 1384 | kfree(edid); |
| 1385 | } |
| 1386 | |
| 1387 | lt9611_set_preferred_mode(connector); |
| 1388 | |
| 1389 | return count; |
| 1390 | } |
| 1391 | |
| 1392 | static enum drm_mode_status lt9611_connector_mode_valid( |
| 1393 | struct drm_connector *connector, struct drm_display_mode *mode) |
| 1394 | { |
| 1395 | |
| 1396 | struct lt9611_timing_info *timing = |
| 1397 | lt9611_get_supported_timing(mode); |
| 1398 | |
| 1399 | return timing ? MODE_OK : MODE_BAD; |
| 1400 | } |
| 1401 | |
| 1402 | /* bridge funcs */ |
| 1403 | static void lt9611_bridge_enable(struct drm_bridge *bridge) |
| 1404 | { |
| 1405 | pr_debug("bridge enable\n"); |
| 1406 | } |
| 1407 | |
| 1408 | static void lt9611_bridge_disable(struct drm_bridge *bridge) |
| 1409 | { |
| 1410 | pr_debug("bridge disable\n"); |
| 1411 | } |
| 1412 | |
| 1413 | static void lt9611_bridge_mode_set(struct drm_bridge *bridge, |
| 1414 | struct drm_display_mode *mode, |
| 1415 | struct drm_display_mode *adj_mode) |
| 1416 | { |
| 1417 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1418 | struct lt9611_video_cfg *video_cfg = &pdata->video_cfg; |
| 1419 | int ret = 0; |
| 1420 | |
| 1421 | pr_debug(" hdisplay=%d, vdisplay=%d, vrefresh=%d, clock=%d\n", |
| 1422 | adj_mode->hdisplay, adj_mode->vdisplay, |
| 1423 | adj_mode->vrefresh, adj_mode->clock); |
| 1424 | |
| 1425 | drm_mode_copy(&pdata->curr_mode, adj_mode); |
| 1426 | |
| 1427 | memset(video_cfg, 0, sizeof(struct lt9611_video_cfg)); |
| 1428 | lt9611_get_video_cfg(pdata, adj_mode, video_cfg); |
| 1429 | |
| 1430 | /* TODO: update intf number of host */ |
| 1431 | if (video_cfg->num_of_lanes != pdata->dsi->lanes) { |
| 1432 | mipi_dsi_detach(pdata->dsi); |
| 1433 | pdata->dsi->lanes = video_cfg->num_of_lanes; |
| 1434 | ret = mipi_dsi_attach(pdata->dsi); |
| 1435 | if (ret) |
| 1436 | pr_err("failed to change host lanes\n"); |
| 1437 | } |
| 1438 | } |
| 1439 | |
| 1440 | static const struct drm_connector_helper_funcs |
| 1441 | lt9611_connector_helper_funcs = { |
| 1442 | .get_modes = lt9611_connector_get_modes, |
| 1443 | .mode_valid = lt9611_connector_mode_valid, |
| 1444 | }; |
| 1445 | |
| 1446 | |
| 1447 | static const struct drm_connector_funcs lt9611_connector_funcs = { |
| 1448 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 1449 | .detect = lt9611_connector_detect, |
| 1450 | .destroy = drm_connector_cleanup, |
| 1451 | .reset = drm_atomic_helper_connector_reset, |
| 1452 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 1453 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
| 1454 | }; |
| 1455 | |
| 1456 | |
| 1457 | static int lt9611_bridge_attach(struct drm_bridge *bridge) |
| 1458 | { |
| 1459 | struct mipi_dsi_host *host; |
| 1460 | struct mipi_dsi_device *dsi; |
| 1461 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1462 | int ret; |
| 1463 | const struct mipi_dsi_device_info info = { .type = "lt9611", |
| 1464 | .channel = 0, |
| 1465 | .node = NULL, |
| 1466 | }; |
| 1467 | |
| 1468 | if (!bridge->encoder) { |
| 1469 | DRM_ERROR("Parent encoder object not found"); |
| 1470 | return -ENODEV; |
| 1471 | } |
| 1472 | |
| 1473 | ret = drm_connector_init(bridge->dev, &pdata->connector, |
| 1474 | <9611_connector_funcs, |
| 1475 | DRM_MODE_CONNECTOR_HDMIA); |
| 1476 | if (ret) { |
| 1477 | DRM_ERROR("Failed to initialize connector: %d\n", ret); |
| 1478 | return ret; |
| 1479 | } |
| 1480 | |
| 1481 | drm_connector_helper_add(&pdata->connector, |
| 1482 | <9611_connector_helper_funcs); |
| 1483 | |
| 1484 | ret = drm_connector_register(&pdata->connector); |
| 1485 | if (ret) { |
| 1486 | DRM_ERROR("Failed to register connector: %d\n", ret); |
| 1487 | return ret; |
| 1488 | } |
| 1489 | |
| 1490 | pdata->connector.polled = DRM_CONNECTOR_POLL_CONNECT; |
| 1491 | |
| 1492 | ret = drm_connector_attach_encoder(&pdata->connector, |
| 1493 | bridge->encoder); |
| 1494 | if (ret) { |
| 1495 | DRM_ERROR("Failed to link up connector to encoder: %d\n", ret); |
| 1496 | return ret; |
| 1497 | } |
| 1498 | |
| 1499 | host = of_find_mipi_dsi_host_by_node(pdata->host_node); |
| 1500 | if (!host) { |
| 1501 | pr_err("failed to find dsi host\n"); |
| 1502 | return -EPROBE_DEFER; |
| 1503 | } |
| 1504 | |
| 1505 | dsi = mipi_dsi_device_register_full(host, &info); |
| 1506 | if (IS_ERR(dsi)) { |
| 1507 | pr_err("failed to create dsi device\n"); |
| 1508 | ret = PTR_ERR(dsi); |
| 1509 | goto err_dsi_device; |
| 1510 | } |
| 1511 | |
| 1512 | dsi->lanes = 4; |
| 1513 | dsi->format = MIPI_DSI_FMT_RGB888; |
| 1514 | dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | |
| 1515 | MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO_BLLP | |
| 1516 | MIPI_DSI_MODE_VIDEO_EOF_BLLP; |
| 1517 | |
| 1518 | ret = mipi_dsi_attach(dsi); |
| 1519 | if (ret < 0) { |
| 1520 | pr_err("failed to attach dsi to host\n"); |
| 1521 | goto err_dsi_attach; |
| 1522 | } |
| 1523 | |
| 1524 | pdata->dsi = dsi; |
| 1525 | |
| 1526 | return 0; |
| 1527 | |
| 1528 | err_dsi_attach: |
| 1529 | mipi_dsi_device_unregister(dsi); |
| 1530 | err_dsi_device: |
| 1531 | return ret; |
| 1532 | } |
| 1533 | |
| 1534 | static void lt9611_bridge_pre_enable(struct drm_bridge *bridge) |
| 1535 | { |
| 1536 | struct lt9611 *pdata = bridge_to_lt9611(bridge); |
| 1537 | |
| 1538 | pr_debug("bridge pre_enable\n"); |
| 1539 | lt9611_reset(pdata, true); |
| 1540 | } |
| 1541 | |
| 1542 | static bool lt9611_bridge_mode_fixup(struct drm_bridge *bridge, |
| 1543 | const struct drm_display_mode *mode, |
| 1544 | struct drm_display_mode *adjusted_mode) |
| 1545 | { |
| 1546 | return true; |
| 1547 | } |
| 1548 | |
| 1549 | static void lt9611_bridge_post_disable(struct drm_bridge *bridge) |
| 1550 | { |
| 1551 | pr_debug("bridge post_disable\n"); |
| 1552 | |
| 1553 | } |
| 1554 | |
| 1555 | static const struct drm_bridge_funcs lt9611_bridge_funcs = { |
| 1556 | .attach = lt9611_bridge_attach, |
| 1557 | .mode_fixup = lt9611_bridge_mode_fixup, |
| 1558 | .pre_enable = lt9611_bridge_pre_enable, |
| 1559 | .enable = lt9611_bridge_enable, |
| 1560 | .disable = lt9611_bridge_disable, |
| 1561 | .post_disable = lt9611_bridge_post_disable, |
| 1562 | .mode_set = lt9611_bridge_mode_set, |
| 1563 | }; |
| 1564 | |
| 1565 | /* sysfs */ |
| 1566 | static int lt9611_dump_debug_info(struct lt9611 *pdata) |
| 1567 | { |
| 1568 | if (!pdata->power_on) { |
| 1569 | pr_err("device is not power on\n"); |
| 1570 | return -EINVAL; |
| 1571 | } |
| 1572 | |
| 1573 | lt9611_read_edid(pdata); |
| 1574 | |
| 1575 | return 0; |
| 1576 | } |
| 1577 | |
| 1578 | static ssize_t dump_info_store(struct device *dev, |
| 1579 | struct device_attribute *attr, |
| 1580 | const char *buf, |
| 1581 | size_t count) |
| 1582 | { |
| 1583 | struct lt9611 *pdata = dev_get_drvdata(dev); |
| 1584 | |
| 1585 | if (!pdata) { |
| 1586 | pr_err("pdata is NULL\n"); |
| 1587 | return -EINVAL; |
| 1588 | } |
| 1589 | |
| 1590 | lt9611_dump_debug_info(pdata); |
| 1591 | |
| 1592 | return count; |
| 1593 | } |
| 1594 | |
| 1595 | static ssize_t firmware_upgrade_store(struct device *dev, |
| 1596 | struct device_attribute *attr, |
| 1597 | const char *buf, |
| 1598 | size_t count) |
| 1599 | { |
| 1600 | struct lt9611 *pdata = dev_get_drvdata(dev); |
| 1601 | int ret = 0; |
| 1602 | |
| 1603 | if (!pdata) { |
| 1604 | pr_err("pdata is NULL\n"); |
| 1605 | return -EINVAL; |
| 1606 | } |
| 1607 | |
| 1608 | ret = request_firmware_nowait(THIS_MODULE, true, |
| 1609 | "lt9611_fw.bin", &pdata->i2c_client->dev, GFP_KERNEL, pdata, |
| 1610 | lt9611_firmware_cb); |
| 1611 | if (ret) |
| 1612 | dev_err(&pdata->i2c_client->dev, |
| 1613 | "Failed to invoke firmware loader: %d\n", ret); |
| 1614 | else |
| 1615 | pr_info("LT9611 starts upgrade, waiting for about 40s...\n"); |
| 1616 | |
| 1617 | return count; |
| 1618 | } |
| 1619 | |
| 1620 | static ssize_t firmware_upgrade_show(struct device *dev, |
| 1621 | struct device_attribute *attr, char *buf) |
| 1622 | { |
| 1623 | struct lt9611 *pdata = dev_get_drvdata(dev); |
| 1624 | |
| 1625 | return snprintf(buf, 4, "%d\n", pdata->fw_status); |
| 1626 | } |
| 1627 | |
| 1628 | static DEVICE_ATTR_WO(dump_info); |
| 1629 | static DEVICE_ATTR_RW(firmware_upgrade); |
| 1630 | |
| 1631 | static struct attribute *lt9611_sysfs_attrs[] = { |
| 1632 | &dev_attr_dump_info.attr, |
| 1633 | &dev_attr_firmware_upgrade.attr, |
| 1634 | NULL, |
| 1635 | }; |
| 1636 | |
| 1637 | static struct attribute_group lt9611_sysfs_attr_grp = { |
| 1638 | .attrs = lt9611_sysfs_attrs, |
| 1639 | }; |
| 1640 | |
| 1641 | static int lt9611_sysfs_init(struct device *dev) |
| 1642 | { |
| 1643 | int rc = 0; |
| 1644 | |
| 1645 | if (!dev) { |
| 1646 | pr_err("%s: Invalid params\n", __func__); |
| 1647 | return -EINVAL; |
| 1648 | } |
| 1649 | |
| 1650 | rc = sysfs_create_group(&dev->kobj, <9611_sysfs_attr_grp); |
| 1651 | if (rc) |
| 1652 | pr_err("%s: sysfs group creation failed %d\n", __func__, rc); |
| 1653 | |
| 1654 | return rc; |
| 1655 | } |
| 1656 | |
| 1657 | static void lt9611_sysfs_remove(struct device *dev) |
| 1658 | { |
| 1659 | if (!dev) { |
| 1660 | pr_err("%s: Invalid params\n", __func__); |
| 1661 | return; |
| 1662 | } |
| 1663 | |
| 1664 | sysfs_remove_group(&dev->kobj, <9611_sysfs_attr_grp); |
| 1665 | } |
| 1666 | |
| 1667 | static int lt9611_probe(struct i2c_client *client, |
| 1668 | const struct i2c_device_id *id) |
| 1669 | { |
| 1670 | struct lt9611 *pdata; |
| 1671 | int ret = 0; |
Yuan Zhao | 2a37e9d | 2020-05-07 13:19:50 +0800 | [diff] [blame] | 1672 | u8 chip_version = 0; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1673 | |
| 1674 | if (!client || !client->dev.of_node) { |
| 1675 | pr_err("invalid input\n"); |
| 1676 | return -EINVAL; |
| 1677 | } |
| 1678 | |
| 1679 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 1680 | pr_err("device doesn't support I2C\n"); |
| 1681 | return -ENODEV; |
| 1682 | } |
| 1683 | |
| 1684 | pdata = devm_kzalloc(&client->dev, |
| 1685 | sizeof(struct lt9611), GFP_KERNEL); |
| 1686 | if (!pdata) |
| 1687 | return -ENOMEM; |
| 1688 | |
| 1689 | ret = lt9611_parse_dt(&client->dev, pdata); |
| 1690 | if (ret) { |
| 1691 | pr_err("failed to parse device tree\n"); |
| 1692 | goto err_dt_parse; |
| 1693 | } |
| 1694 | |
| 1695 | ret = lt9611_get_dt_supply(&client->dev, pdata); |
| 1696 | if (ret) { |
| 1697 | pr_err("failed to get dt supply\n"); |
| 1698 | goto err_dt_parse; |
| 1699 | } |
| 1700 | |
| 1701 | pdata->dev = &client->dev; |
| 1702 | pdata->i2c_client = client; |
| 1703 | |
| 1704 | ret = lt9611_gpio_configure(pdata, true); |
| 1705 | if (ret) { |
| 1706 | pr_err("failed to configure GPIOs\n"); |
| 1707 | goto err_dt_supply; |
| 1708 | } |
| 1709 | |
| 1710 | lt9611_assert_5v(pdata); |
| 1711 | |
| 1712 | ret = lt9611_enable_vreg(pdata, true); |
| 1713 | if (ret) { |
| 1714 | pr_err("failed to enable vreg\n"); |
| 1715 | goto err_i2c_prog; |
| 1716 | } |
| 1717 | |
| 1718 | lt9611_reset(pdata, true); |
| 1719 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1720 | ret = lt9611_read_device_id(pdata); |
| 1721 | if (ret) { |
| 1722 | pr_err("failed to read chip rev\n"); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1723 | goto err_i2c_prog; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1724 | } |
| 1725 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1726 | i2c_set_clientdata(client, pdata); |
| 1727 | dev_set_drvdata(&client->dev, pdata); |
| 1728 | |
GG Hou | fc79252 | 2020-03-16 15:35:49 +0800 | [diff] [blame] | 1729 | ret = lt9611_sysfs_init(&client->dev); |
| 1730 | if (ret) { |
| 1731 | pr_err("sysfs init failed\n"); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1732 | goto err_i2c_prog; |
GG Hou | fc79252 | 2020-03-16 15:35:49 +0800 | [diff] [blame] | 1733 | } |
| 1734 | |
Yuan Zhao | 2a37e9d | 2020-05-07 13:19:50 +0800 | [diff] [blame] | 1735 | chip_version = lt9611_get_version(pdata); |
| 1736 | pdata->hpd_support = false; |
| 1737 | if (chip_version) { |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1738 | pr_info("LT9611 works, no need to upgrade FW\n"); |
Yuan Zhao | 2a37e9d | 2020-05-07 13:19:50 +0800 | [diff] [blame] | 1739 | if (chip_version >= 0x40) |
| 1740 | pdata->hpd_support = true; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1741 | } else { |
| 1742 | ret = request_firmware_nowait(THIS_MODULE, true, |
| 1743 | "lt9611_fw.bin", &client->dev, GFP_KERNEL, pdata, |
| 1744 | lt9611_firmware_cb); |
| 1745 | if (ret) { |
| 1746 | dev_err(&client->dev, |
| 1747 | "Failed to invoke firmware loader: %d\n", ret); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1748 | goto err_i2c_prog; |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1749 | } else |
| 1750 | return 0; |
| 1751 | } |
| 1752 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1753 | #if IS_ENABLED(CONFIG_OF) |
| 1754 | pdata->bridge.of_node = client->dev.of_node; |
| 1755 | #endif |
| 1756 | |
| 1757 | pdata->bridge.funcs = <9611_bridge_funcs; |
| 1758 | drm_bridge_add(&pdata->bridge); |
| 1759 | |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1760 | pdata->wq = create_singlethread_workqueue("lt9611_wk"); |
| 1761 | if (!pdata->wq) { |
| 1762 | pr_err("Error creating lt9611 wq\n"); |
| 1763 | goto err_i2c_prog; |
| 1764 | } |
| 1765 | INIT_WORK(&pdata->work, lt9611_hpd_work); |
| 1766 | |
| 1767 | pdata->irq = gpio_to_irq(pdata->irq_gpio); |
| 1768 | ret = request_threaded_irq(pdata->irq, NULL, lt9611_irq_thread_handler, |
| 1769 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lt9611_irq", pdata); |
| 1770 | if (ret) { |
| 1771 | pr_err("failed to request irq\n"); |
| 1772 | goto err_i2c_prog; |
| 1773 | } |
| 1774 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1775 | return 0; |
| 1776 | |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1777 | err_i2c_prog: |
| 1778 | lt9611_gpio_configure(pdata, false); |
| 1779 | err_dt_supply: |
| 1780 | lt9611_put_dt_supply(&client->dev, pdata); |
| 1781 | err_dt_parse: |
| 1782 | devm_kfree(&client->dev, pdata); |
| 1783 | return ret; |
| 1784 | } |
| 1785 | |
| 1786 | static int lt9611_remove(struct i2c_client *client) |
| 1787 | { |
| 1788 | int ret = -EINVAL; |
| 1789 | struct lt9611 *pdata = i2c_get_clientdata(client); |
| 1790 | struct drm_display_mode *mode, *n; |
| 1791 | |
| 1792 | if (!pdata) |
| 1793 | goto end; |
| 1794 | |
| 1795 | mipi_dsi_detach(pdata->dsi); |
| 1796 | mipi_dsi_device_unregister(pdata->dsi); |
| 1797 | |
| 1798 | drm_bridge_remove(&pdata->bridge); |
| 1799 | |
| 1800 | lt9611_sysfs_remove(&client->dev); |
| 1801 | |
| 1802 | disable_irq(pdata->irq); |
| 1803 | free_irq(pdata->irq, pdata); |
| 1804 | |
| 1805 | ret = lt9611_gpio_configure(pdata, false); |
| 1806 | |
| 1807 | lt9611_put_dt_supply(&client->dev, pdata); |
| 1808 | |
| 1809 | if (pdata->non_pluggable) { |
| 1810 | list_for_each_entry_safe(mode, n, &pdata->mode_list, head) { |
| 1811 | list_del(&mode->head); |
| 1812 | kfree(mode); |
| 1813 | } |
| 1814 | } |
| 1815 | |
| 1816 | devm_kfree(&client->dev, pdata); |
Yuan Zhao | 1831e75 | 2020-03-23 14:16:28 +0800 | [diff] [blame] | 1817 | if (pdata->wq) |
| 1818 | destroy_workqueue(pdata->wq); |
Wenjun Zhang | 2142e0c | 2019-10-28 15:41:08 +0800 | [diff] [blame] | 1819 | end: |
| 1820 | return ret; |
| 1821 | } |
| 1822 | |
| 1823 | |
| 1824 | static struct i2c_device_id lt9611_id[] = { |
| 1825 | { "lt,lt9611uxc", 0}, |
| 1826 | {} |
| 1827 | }; |
| 1828 | |
| 1829 | static const struct of_device_id lt9611_match_table[] = { |
| 1830 | {.compatible = "lt,lt9611uxc"}, |
| 1831 | {} |
| 1832 | }; |
| 1833 | MODULE_DEVICE_TABLE(of, lt9611_match_table); |
| 1834 | |
| 1835 | static struct i2c_driver lt9611_driver = { |
| 1836 | .driver = { |
| 1837 | .name = "lt9611", |
| 1838 | .of_match_table = lt9611_match_table, |
| 1839 | }, |
| 1840 | .probe = lt9611_probe, |
| 1841 | .remove = lt9611_remove, |
| 1842 | .id_table = lt9611_id, |
| 1843 | }; |
| 1844 | |
| 1845 | static int __init lt9611_init(void) |
| 1846 | { |
| 1847 | return i2c_add_driver(<9611_driver); |
| 1848 | } |
| 1849 | |
| 1850 | static void __exit lt9611_exit(void) |
| 1851 | { |
| 1852 | i2c_del_driver(<9611_driver); |
| 1853 | } |
| 1854 | |
| 1855 | module_init(lt9611_init); |
| 1856 | module_exit(lt9611_exit); |
| 1857 | |