Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Pulse Eight HDMI CEC driver |
| 3 | * |
| 4 | * Copyright 2016 Hans Verkuil <hverkuil@xs4all.nl |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version of 2 of the License, or (at your |
| 9 | * option) any later version. See the file COPYING in the main directory of |
| 10 | * this archive for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/workqueue.h> |
| 19 | #include <linux/serio.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/time.h> |
| 22 | #include <linux/delay.h> |
| 23 | |
| 24 | #include <media/cec.h> |
| 25 | |
| 26 | MODULE_AUTHOR("Hans Verkuil <hverkuil@xs4all.nl>"); |
| 27 | MODULE_DESCRIPTION("Pulse Eight HDMI CEC driver"); |
| 28 | MODULE_LICENSE("GPL"); |
| 29 | |
| 30 | static int debug; |
| 31 | module_param(debug, int, 0644); |
| 32 | MODULE_PARM_DESC(debug, "debug level (0-1)"); |
| 33 | |
| 34 | enum pulse8_msgcodes { |
| 35 | MSGCODE_NOTHING = 0, |
| 36 | MSGCODE_PING, |
| 37 | MSGCODE_TIMEOUT_ERROR, |
| 38 | MSGCODE_HIGH_ERROR, |
| 39 | MSGCODE_LOW_ERROR, |
| 40 | MSGCODE_FRAME_START, |
| 41 | MSGCODE_FRAME_DATA, |
| 42 | MSGCODE_RECEIVE_FAILED, |
| 43 | MSGCODE_COMMAND_ACCEPTED, /* 0x08 */ |
| 44 | MSGCODE_COMMAND_REJECTED, |
| 45 | MSGCODE_SET_ACK_MASK, |
| 46 | MSGCODE_TRANSMIT, |
| 47 | MSGCODE_TRANSMIT_EOM, |
| 48 | MSGCODE_TRANSMIT_IDLETIME, |
| 49 | MSGCODE_TRANSMIT_ACK_POLARITY, |
| 50 | MSGCODE_TRANSMIT_LINE_TIMEOUT, |
| 51 | MSGCODE_TRANSMIT_SUCCEEDED, /* 0x10 */ |
| 52 | MSGCODE_TRANSMIT_FAILED_LINE, |
| 53 | MSGCODE_TRANSMIT_FAILED_ACK, |
| 54 | MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA, |
| 55 | MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE, |
| 56 | MSGCODE_FIRMWARE_VERSION, |
| 57 | MSGCODE_START_BOOTLOADER, |
| 58 | MSGCODE_GET_BUILDDATE, |
| 59 | MSGCODE_SET_CONTROLLED, /* 0x18 */ |
| 60 | MSGCODE_GET_AUTO_ENABLED, |
| 61 | MSGCODE_SET_AUTO_ENABLED, |
| 62 | MSGCODE_GET_DEFAULT_LOGICAL_ADDRESS, |
| 63 | MSGCODE_SET_DEFAULT_LOGICAL_ADDRESS, |
| 64 | MSGCODE_GET_LOGICAL_ADDRESS_MASK, |
| 65 | MSGCODE_SET_LOGICAL_ADDRESS_MASK, |
| 66 | MSGCODE_GET_PHYSICAL_ADDRESS, |
| 67 | MSGCODE_SET_PHYSICAL_ADDRESS, /* 0x20 */ |
| 68 | MSGCODE_GET_DEVICE_TYPE, |
| 69 | MSGCODE_SET_DEVICE_TYPE, |
| 70 | MSGCODE_GET_HDMI_VERSION, |
| 71 | MSGCODE_SET_HDMI_VERSION, |
| 72 | MSGCODE_GET_OSD_NAME, |
| 73 | MSGCODE_SET_OSD_NAME, |
| 74 | MSGCODE_WRITE_EEPROM, |
| 75 | MSGCODE_GET_ADAPTER_TYPE, /* 0x28 */ |
| 76 | MSGCODE_SET_ACTIVE_SOURCE, |
| 77 | |
| 78 | MSGCODE_FRAME_EOM = 0x80, |
| 79 | MSGCODE_FRAME_ACK = 0x40, |
| 80 | }; |
| 81 | |
| 82 | #define MSGSTART 0xff |
| 83 | #define MSGEND 0xfe |
| 84 | #define MSGESC 0xfd |
| 85 | #define MSGOFFSET 3 |
| 86 | |
| 87 | #define DATA_SIZE 256 |
| 88 | |
| 89 | struct pulse8 { |
| 90 | struct device *dev; |
| 91 | struct serio *serio; |
| 92 | struct cec_adapter *adap; |
| 93 | struct completion cmd_done; |
| 94 | struct work_struct work; |
| 95 | struct cec_msg rx_msg; |
| 96 | u8 data[DATA_SIZE]; |
| 97 | unsigned int len; |
| 98 | u8 buf[DATA_SIZE]; |
| 99 | unsigned int idx; |
| 100 | bool escape; |
| 101 | bool started; |
| 102 | }; |
| 103 | |
Mauro Carvalho Chehab | 9d01315 | 2016-07-12 13:46:20 -0300 | [diff] [blame] | 104 | static void pulse8_irq_work_handler(struct work_struct *work) |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 105 | { |
| 106 | struct pulse8 *pulse8 = |
| 107 | container_of(work, struct pulse8, work); |
| 108 | |
| 109 | switch (pulse8->data[0] & 0x3f) { |
| 110 | case MSGCODE_FRAME_DATA: |
| 111 | cec_received_msg(pulse8->adap, &pulse8->rx_msg); |
| 112 | break; |
| 113 | case MSGCODE_TRANSMIT_SUCCEEDED: |
| 114 | cec_transmit_done(pulse8->adap, CEC_TX_STATUS_OK, |
| 115 | 0, 0, 0, 0); |
| 116 | break; |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 117 | case MSGCODE_TRANSMIT_FAILED_ACK: |
| 118 | cec_transmit_done(pulse8->adap, CEC_TX_STATUS_NACK, |
| 119 | 0, 1, 0, 0); |
| 120 | break; |
Hans Verkuil | 31f58e3 | 2016-08-12 06:46:06 -0300 | [diff] [blame] | 121 | case MSGCODE_TRANSMIT_FAILED_LINE: |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 122 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA: |
| 123 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE: |
| 124 | cec_transmit_done(pulse8->adap, CEC_TX_STATUS_ERROR, |
| 125 | 0, 0, 0, 1); |
| 126 | break; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | static irqreturn_t pulse8_interrupt(struct serio *serio, unsigned char data, |
| 131 | unsigned int flags) |
| 132 | { |
| 133 | struct pulse8 *pulse8 = serio_get_drvdata(serio); |
| 134 | |
| 135 | if (!pulse8->started && data != MSGSTART) |
| 136 | return IRQ_HANDLED; |
| 137 | if (data == MSGESC) { |
| 138 | pulse8->escape = true; |
| 139 | return IRQ_HANDLED; |
| 140 | } |
| 141 | if (pulse8->escape) { |
| 142 | data += MSGOFFSET; |
| 143 | pulse8->escape = false; |
| 144 | } else if (data == MSGEND) { |
| 145 | struct cec_msg *msg = &pulse8->rx_msg; |
| 146 | |
| 147 | if (debug) |
| 148 | dev_info(pulse8->dev, "received: %*ph\n", |
| 149 | pulse8->idx, pulse8->buf); |
| 150 | pulse8->data[0] = pulse8->buf[0]; |
| 151 | switch (pulse8->buf[0] & 0x3f) { |
| 152 | case MSGCODE_FRAME_START: |
| 153 | msg->len = 1; |
| 154 | msg->msg[0] = pulse8->buf[1]; |
| 155 | break; |
| 156 | case MSGCODE_FRAME_DATA: |
| 157 | if (msg->len == CEC_MAX_MSG_SIZE) |
| 158 | break; |
| 159 | msg->msg[msg->len++] = pulse8->buf[1]; |
| 160 | if (pulse8->buf[0] & MSGCODE_FRAME_EOM) |
| 161 | schedule_work(&pulse8->work); |
| 162 | break; |
| 163 | case MSGCODE_TRANSMIT_SUCCEEDED: |
| 164 | case MSGCODE_TRANSMIT_FAILED_LINE: |
| 165 | case MSGCODE_TRANSMIT_FAILED_ACK: |
| 166 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA: |
| 167 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE: |
| 168 | schedule_work(&pulse8->work); |
| 169 | break; |
Hans Verkuil | 31f58e3 | 2016-08-12 06:46:06 -0300 | [diff] [blame] | 170 | case MSGCODE_HIGH_ERROR: |
| 171 | case MSGCODE_LOW_ERROR: |
| 172 | case MSGCODE_RECEIVE_FAILED: |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 173 | case MSGCODE_TIMEOUT_ERROR: |
| 174 | break; |
| 175 | case MSGCODE_COMMAND_ACCEPTED: |
| 176 | case MSGCODE_COMMAND_REJECTED: |
| 177 | default: |
| 178 | if (pulse8->idx == 0) |
| 179 | break; |
| 180 | memcpy(pulse8->data, pulse8->buf, pulse8->idx); |
| 181 | pulse8->len = pulse8->idx; |
| 182 | complete(&pulse8->cmd_done); |
| 183 | break; |
| 184 | } |
| 185 | pulse8->idx = 0; |
| 186 | pulse8->started = false; |
| 187 | return IRQ_HANDLED; |
| 188 | } else if (data == MSGSTART) { |
| 189 | pulse8->idx = 0; |
| 190 | pulse8->started = true; |
| 191 | return IRQ_HANDLED; |
| 192 | } |
| 193 | |
| 194 | if (pulse8->idx >= DATA_SIZE) { |
| 195 | dev_dbg(pulse8->dev, |
| 196 | "throwing away %d bytes of garbage\n", pulse8->idx); |
| 197 | pulse8->idx = 0; |
| 198 | } |
| 199 | pulse8->buf[pulse8->idx++] = data; |
| 200 | return IRQ_HANDLED; |
| 201 | } |
| 202 | |
| 203 | static void pulse8_disconnect(struct serio *serio) |
| 204 | { |
| 205 | struct pulse8 *pulse8 = serio_get_drvdata(serio); |
| 206 | |
| 207 | cec_unregister_adapter(pulse8->adap); |
| 208 | dev_info(&serio->dev, "disconnected\n"); |
| 209 | serio_close(serio); |
| 210 | serio_set_drvdata(serio, NULL); |
| 211 | kfree(pulse8); |
| 212 | } |
| 213 | |
| 214 | static int pulse8_send(struct serio *serio, const u8 *command, u8 cmd_len) |
| 215 | { |
| 216 | int err = 0; |
| 217 | |
| 218 | err = serio_write(serio, MSGSTART); |
| 219 | if (err) |
| 220 | return err; |
| 221 | for (; !err && cmd_len; command++, cmd_len--) { |
| 222 | if (*command >= MSGESC) { |
| 223 | err = serio_write(serio, MSGESC); |
| 224 | if (!err) |
| 225 | err = serio_write(serio, *command - MSGOFFSET); |
| 226 | } else { |
| 227 | err = serio_write(serio, *command); |
| 228 | } |
| 229 | } |
| 230 | if (!err) |
| 231 | err = serio_write(serio, 0xfe); |
| 232 | |
| 233 | return err; |
| 234 | } |
| 235 | |
| 236 | static int pulse8_send_and_wait(struct pulse8 *pulse8, |
| 237 | const u8 *cmd, u8 cmd_len, u8 response, u8 size) |
| 238 | { |
| 239 | int err; |
| 240 | |
| 241 | /*dev_info(pulse8->dev, "transmit: %*ph\n", cmd_len, cmd);*/ |
| 242 | init_completion(&pulse8->cmd_done); |
| 243 | |
| 244 | err = pulse8_send(pulse8->serio, cmd, cmd_len); |
| 245 | if (err) |
| 246 | return err; |
| 247 | |
| 248 | if (!wait_for_completion_timeout(&pulse8->cmd_done, HZ)) |
| 249 | return -ETIMEDOUT; |
| 250 | if ((pulse8->data[0] & 0x3f) == MSGCODE_COMMAND_REJECTED && |
| 251 | cmd[0] != MSGCODE_SET_CONTROLLED && |
| 252 | cmd[0] != MSGCODE_SET_AUTO_ENABLED && |
| 253 | cmd[0] != MSGCODE_GET_BUILDDATE) { |
| 254 | u8 cmd_sc[2]; |
| 255 | |
| 256 | cmd_sc[0] = MSGCODE_SET_CONTROLLED; |
| 257 | cmd_sc[1] = 1; |
| 258 | err = pulse8_send_and_wait(pulse8, cmd_sc, 2, |
| 259 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 260 | if (err) |
| 261 | return err; |
| 262 | init_completion(&pulse8->cmd_done); |
| 263 | |
| 264 | err = pulse8_send(pulse8->serio, cmd, cmd_len); |
| 265 | if (err) |
| 266 | return err; |
| 267 | |
| 268 | if (!wait_for_completion_timeout(&pulse8->cmd_done, HZ)) |
| 269 | return -ETIMEDOUT; |
| 270 | } |
| 271 | if (response && |
| 272 | ((pulse8->data[0] & 0x3f) != response || pulse8->len < size + 1)) { |
| 273 | dev_info(pulse8->dev, "transmit: failed %02x\n", |
| 274 | pulse8->data[0] & 0x3f); |
| 275 | return -EIO; |
| 276 | } |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | static int pulse8_setup(struct pulse8 *pulse8, struct serio *serio) |
| 281 | { |
| 282 | u8 *data = pulse8->data + 1; |
| 283 | unsigned int count = 0; |
| 284 | unsigned int vers = 0; |
| 285 | u8 cmd[2]; |
| 286 | int err; |
| 287 | |
| 288 | cmd[0] = MSGCODE_PING; |
| 289 | err = pulse8_send_and_wait(pulse8, cmd, 1, |
| 290 | MSGCODE_COMMAND_ACCEPTED, 0); |
| 291 | cmd[0] = MSGCODE_FIRMWARE_VERSION; |
| 292 | if (!err) |
| 293 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 2); |
| 294 | if (err) |
| 295 | return err; |
| 296 | |
| 297 | vers = (data[0] << 8) | data[1]; |
| 298 | |
| 299 | dev_info(pulse8->dev, "Firmware version %04x\n", vers); |
| 300 | if (vers < 2) |
| 301 | return 0; |
| 302 | |
| 303 | cmd[0] = MSGCODE_GET_BUILDDATE; |
| 304 | if (!err) |
| 305 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 4); |
| 306 | if (!err) { |
| 307 | time_t date = (data[0] << 24) | (data[1] << 16) | |
| 308 | (data[2] << 8) | data[3]; |
| 309 | struct tm tm; |
| 310 | |
| 311 | time_to_tm(date, 0, &tm); |
| 312 | |
| 313 | dev_info(pulse8->dev, "Firmware build date %04ld.%02d.%02d %02d:%02d:%02d\n", |
| 314 | tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, |
| 315 | tm.tm_hour, tm.tm_min, tm.tm_sec); |
| 316 | } |
| 317 | |
| 318 | do { |
| 319 | if (count) |
| 320 | msleep(500); |
| 321 | cmd[0] = MSGCODE_SET_AUTO_ENABLED; |
| 322 | cmd[1] = 0; |
| 323 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 324 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 325 | if (err && count == 0) { |
| 326 | dev_info(pulse8->dev, "No Auto Enabled supported\n"); |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | cmd[0] = MSGCODE_GET_AUTO_ENABLED; |
| 331 | if (!err) |
| 332 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); |
| 333 | if (!err && !data[0]) { |
| 334 | cmd[0] = MSGCODE_WRITE_EEPROM; |
| 335 | err = pulse8_send_and_wait(pulse8, cmd, 1, |
| 336 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 337 | cmd[0] = MSGCODE_GET_AUTO_ENABLED; |
| 338 | if (!err) |
| 339 | err = pulse8_send_and_wait(pulse8, cmd, 1, |
| 340 | cmd[0], 1); |
| 341 | } |
| 342 | } while (!err && data[0] && count++ < 5); |
| 343 | |
| 344 | if (!err && data[0]) |
| 345 | err = -EIO; |
| 346 | |
| 347 | return err; |
| 348 | } |
| 349 | |
| 350 | static int pulse8_cec_adap_enable(struct cec_adapter *adap, bool enable) |
| 351 | { |
| 352 | struct pulse8 *pulse8 = adap->priv; |
| 353 | u8 cmd[16]; |
| 354 | int err; |
| 355 | |
| 356 | cmd[0] = MSGCODE_SET_CONTROLLED; |
| 357 | cmd[1] = enable; |
| 358 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 359 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 360 | return enable ? err : 0; |
| 361 | } |
| 362 | |
| 363 | static int pulse8_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) |
| 364 | { |
| 365 | struct pulse8 *pulse8 = adap->priv; |
| 366 | u16 mask = 0; |
| 367 | u8 cmd[3]; |
| 368 | int err; |
| 369 | |
| 370 | if (log_addr != CEC_LOG_ADDR_INVALID) |
| 371 | mask = 1 << log_addr; |
| 372 | cmd[0] = MSGCODE_SET_ACK_MASK; |
| 373 | cmd[1] = mask >> 8; |
| 374 | cmd[2] = mask & 0xff; |
| 375 | err = pulse8_send_and_wait(pulse8, cmd, 3, |
| 376 | MSGCODE_COMMAND_ACCEPTED, 0); |
| 377 | if (mask == 0) |
| 378 | return 0; |
| 379 | return err; |
| 380 | } |
| 381 | |
| 382 | static int pulse8_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, |
| 383 | u32 signal_free_time, struct cec_msg *msg) |
| 384 | { |
| 385 | struct pulse8 *pulse8 = adap->priv; |
| 386 | u8 cmd[2]; |
| 387 | unsigned int i; |
| 388 | int err; |
| 389 | |
| 390 | cmd[0] = MSGCODE_TRANSMIT_IDLETIME; |
Hans Verkuil | 1e6e975 | 2016-08-12 06:44:27 -0300 | [diff] [blame] | 391 | cmd[1] = signal_free_time; |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 392 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 393 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 394 | cmd[0] = MSGCODE_TRANSMIT_ACK_POLARITY; |
| 395 | cmd[1] = cec_msg_is_broadcast(msg); |
| 396 | if (!err) |
| 397 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 398 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 399 | cmd[0] = msg->len == 1 ? MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT; |
| 400 | cmd[1] = msg->msg[0]; |
| 401 | if (!err) |
| 402 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 403 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 404 | if (!err && msg->len > 1) { |
| 405 | cmd[0] = msg->len == 2 ? MSGCODE_TRANSMIT_EOM : |
| 406 | MSGCODE_TRANSMIT; |
| 407 | cmd[1] = msg->msg[1]; |
| 408 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 409 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 410 | for (i = 0; !err && i + 2 < msg->len; i++) { |
| 411 | cmd[0] = (i + 2 == msg->len - 1) ? |
| 412 | MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT; |
| 413 | cmd[1] = msg->msg[i + 2]; |
| 414 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 415 | MSGCODE_COMMAND_ACCEPTED, 1); |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | return err; |
| 420 | } |
| 421 | |
| 422 | static int pulse8_received(struct cec_adapter *adap, struct cec_msg *msg) |
| 423 | { |
| 424 | return -ENOMSG; |
| 425 | } |
| 426 | |
Wei Yongjun | babbf09 | 2016-07-13 09:45:00 -0300 | [diff] [blame] | 427 | static const struct cec_adap_ops pulse8_cec_adap_ops = { |
Hans Verkuil | 3dff310 | 2016-07-10 07:12:10 -0300 | [diff] [blame] | 428 | .adap_enable = pulse8_cec_adap_enable, |
| 429 | .adap_log_addr = pulse8_cec_adap_log_addr, |
| 430 | .adap_transmit = pulse8_cec_adap_transmit, |
| 431 | .received = pulse8_received, |
| 432 | }; |
| 433 | |
| 434 | static int pulse8_connect(struct serio *serio, struct serio_driver *drv) |
| 435 | { |
| 436 | u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS | CEC_CAP_PHYS_ADDR | |
| 437 | CEC_CAP_PASSTHROUGH | CEC_CAP_RC | CEC_CAP_MONITOR_ALL; |
| 438 | struct pulse8 *pulse8; |
| 439 | int err = -ENOMEM; |
| 440 | |
| 441 | pulse8 = kzalloc(sizeof(*pulse8), GFP_KERNEL); |
| 442 | |
| 443 | if (!pulse8) |
| 444 | return -ENOMEM; |
| 445 | |
| 446 | pulse8->serio = serio; |
| 447 | pulse8->adap = cec_allocate_adapter(&pulse8_cec_adap_ops, pulse8, |
| 448 | "HDMI CEC", caps, 1, &serio->dev); |
| 449 | err = PTR_ERR_OR_ZERO(pulse8->adap); |
| 450 | if (err < 0) |
| 451 | goto free_device; |
| 452 | |
| 453 | pulse8->dev = &serio->dev; |
| 454 | serio_set_drvdata(serio, pulse8); |
| 455 | INIT_WORK(&pulse8->work, pulse8_irq_work_handler); |
| 456 | |
| 457 | err = serio_open(serio, drv); |
| 458 | if (err) |
| 459 | goto delete_adap; |
| 460 | |
| 461 | err = pulse8_setup(pulse8, serio); |
| 462 | if (err) |
| 463 | goto close_serio; |
| 464 | |
| 465 | err = cec_register_adapter(pulse8->adap); |
| 466 | if (err < 0) |
| 467 | goto close_serio; |
| 468 | |
| 469 | pulse8->dev = &pulse8->adap->devnode.dev; |
| 470 | return 0; |
| 471 | |
| 472 | close_serio: |
| 473 | serio_close(serio); |
| 474 | delete_adap: |
| 475 | cec_delete_adapter(pulse8->adap); |
| 476 | serio_set_drvdata(serio, NULL); |
| 477 | free_device: |
| 478 | kfree(pulse8); |
| 479 | return err; |
| 480 | } |
| 481 | |
| 482 | static struct serio_device_id pulse8_serio_ids[] = { |
| 483 | { |
| 484 | .type = SERIO_RS232, |
| 485 | .proto = SERIO_PULSE8_CEC, |
| 486 | .id = SERIO_ANY, |
| 487 | .extra = SERIO_ANY, |
| 488 | }, |
| 489 | { 0 } |
| 490 | }; |
| 491 | |
| 492 | MODULE_DEVICE_TABLE(serio, pulse8_serio_ids); |
| 493 | |
| 494 | static struct serio_driver pulse8_drv = { |
| 495 | .driver = { |
| 496 | .name = "pulse8-cec", |
| 497 | }, |
| 498 | .description = "Pulse Eight HDMI CEC driver", |
| 499 | .id_table = pulse8_serio_ids, |
| 500 | .interrupt = pulse8_interrupt, |
| 501 | .connect = pulse8_connect, |
| 502 | .disconnect = pulse8_disconnect, |
| 503 | }; |
| 504 | |
| 505 | module_serio_driver(pulse8_drv); |