projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3dff3106 HV |
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 | ||
| 89c2e228 JF |
13 | /* |
| 14 | * Notes: | |
| 15 | * | |
| 16 | * - Devices with firmware version < 2 do not store their configuration in | |
| 17 | * EEPROM. | |
| 18 | * | |
| 19 | * - In autonomous mode, only messages from a TV will be acknowledged, even | |
| 20 | * polling messages. Upon receiving a message from a TV, the dongle will | |
| 21 | * respond to messages from any logical address. | |
| 22 | * | |
| 23 | * - In autonomous mode, the dongle will by default reply Feature Abort | |
| 24 | * [Unrecognized Opcode] when it receives Give Device Vendor ID. It will | |
| 25 | * however observe vendor ID's reported by other devices and possibly | |
| 26 | * alter this behavior. When TV's (and TV's only) report that their vendor ID | |
| 27 | * is LG (0x00e091), the dongle will itself reply that it has the same vendor | |
| 28 | * ID, and it will respond to at least one vendor specific command. | |
| 29 | * | |
| 30 | * - In autonomous mode, the dongle is known to attempt wakeup if it receives | |
| 31 | * <User Control Pressed> ["Power On"], ["Power] or ["Power Toggle"], or if it | |
| 32 | * receives <Set Stream Path> with its own physical address. It also does this | |
| 33 | * if it receives <Vendor Specific Command> [0x03 0x00] from an LG TV. | |
| 34 | */ | |
| 35 | ||
| 3dff3106 HV |
36 | #include <linux/completion.h> |
| 37 | #include <linux/init.h> | |
| 38 | #include <linux/interrupt.h> | |
| 39 | #include <linux/kernel.h> | |
| 40 | #include <linux/module.h> | |
| 41 | #include <linux/workqueue.h> | |
| 42 | #include <linux/serio.h> | |
| 43 | #include <linux/slab.h> | |
| 44 | #include <linux/time.h> | |
| 45 | #include <linux/delay.h> | |
| 46 | ||
| 47 | #include <media/cec.h> | |
| 48 | ||
| 49 | MODULE_AUTHOR("Hans Verkuil <hverkuil@xs4all.nl>"); | |
| 50 | MODULE_DESCRIPTION("Pulse Eight HDMI CEC driver"); | |
| 51 | MODULE_LICENSE("GPL"); | |
| 52 | ||
| 53 | static int debug; | |
| 9b7c0c47 | 54 | static int persistent_config; |
| 3dff3106 | 55 | module_param(debug, int, 0644); |
| e28a6c8b | 56 | module_param(persistent_config, int, 0644); |
| 3dff3106 | 57 | MODULE_PARM_DESC(debug, "debug level (0-1)"); |
| e28a6c8b | 58 | MODULE_PARM_DESC(persistent_config, "read config from persistent memory (0-1)"); |
| 3dff3106 HV |
59 | |
| 60 | enum pulse8_msgcodes { | |
| 61 | MSGCODE_NOTHING = 0, | |
| 62 | MSGCODE_PING, | |
| 63 | MSGCODE_TIMEOUT_ERROR, | |
| 64 | MSGCODE_HIGH_ERROR, | |
| 65 | MSGCODE_LOW_ERROR, | |
| 66 | MSGCODE_FRAME_START, | |
| 67 | MSGCODE_FRAME_DATA, | |
| 68 | MSGCODE_RECEIVE_FAILED, | |
| 69 | MSGCODE_COMMAND_ACCEPTED, /* 0x08 */ | |
| 70 | MSGCODE_COMMAND_REJECTED, | |
| 71 | MSGCODE_SET_ACK_MASK, | |
| 72 | MSGCODE_TRANSMIT, | |
| 73 | MSGCODE_TRANSMIT_EOM, | |
| 74 | MSGCODE_TRANSMIT_IDLETIME, | |
| 75 | MSGCODE_TRANSMIT_ACK_POLARITY, | |
| 76 | MSGCODE_TRANSMIT_LINE_TIMEOUT, | |
| 77 | MSGCODE_TRANSMIT_SUCCEEDED, /* 0x10 */ | |
| 78 | MSGCODE_TRANSMIT_FAILED_LINE, | |
| 79 | MSGCODE_TRANSMIT_FAILED_ACK, | |
| 80 | MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA, | |
| 81 | MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE, | |
| 82 | MSGCODE_FIRMWARE_VERSION, | |
| 83 | MSGCODE_START_BOOTLOADER, | |
| 84 | MSGCODE_GET_BUILDDATE, | |
| 85 | MSGCODE_SET_CONTROLLED, /* 0x18 */ | |
| 86 | MSGCODE_GET_AUTO_ENABLED, | |
| 87 | MSGCODE_SET_AUTO_ENABLED, | |
| 88 | MSGCODE_GET_DEFAULT_LOGICAL_ADDRESS, | |
| 89 | MSGCODE_SET_DEFAULT_LOGICAL_ADDRESS, | |
| 90 | MSGCODE_GET_LOGICAL_ADDRESS_MASK, | |
| 91 | MSGCODE_SET_LOGICAL_ADDRESS_MASK, | |
| 92 | MSGCODE_GET_PHYSICAL_ADDRESS, | |
| 93 | MSGCODE_SET_PHYSICAL_ADDRESS, /* 0x20 */ | |
| 94 | MSGCODE_GET_DEVICE_TYPE, | |
| 95 | MSGCODE_SET_DEVICE_TYPE, | |
| 96 | MSGCODE_GET_HDMI_VERSION, | |
| 97 | MSGCODE_SET_HDMI_VERSION, | |
| 98 | MSGCODE_GET_OSD_NAME, | |
| 99 | MSGCODE_SET_OSD_NAME, | |
| 100 | MSGCODE_WRITE_EEPROM, | |
| 101 | MSGCODE_GET_ADAPTER_TYPE, /* 0x28 */ | |
| 102 | MSGCODE_SET_ACTIVE_SOURCE, | |
| 103 | ||
| 104 | MSGCODE_FRAME_EOM = 0x80, | |
| 105 | MSGCODE_FRAME_ACK = 0x40, | |
| 106 | }; | |
| 107 | ||
| 108 | #define MSGSTART 0xff | |
| 109 | #define MSGEND 0xfe | |
| 110 | #define MSGESC 0xfd | |
| 111 | #define MSGOFFSET 3 | |
| 112 | ||
| 113 | #define DATA_SIZE 256 | |
| 114 | ||
| e28a6c8b JF |
115 | #define PING_PERIOD (15 * HZ) |
| 116 | ||
| 3dff3106 HV |
117 | struct pulse8 { |
| 118 | struct device *dev; | |
| 119 | struct serio *serio; | |
| 120 | struct cec_adapter *adap; | |
| e28a6c8b | 121 | unsigned int vers; |
| 3dff3106 HV |
122 | struct completion cmd_done; |
| 123 | struct work_struct work; | |
| e28a6c8b | 124 | struct delayed_work ping_eeprom_work; |
| 3dff3106 HV |
125 | struct cec_msg rx_msg; |
| 126 | u8 data[DATA_SIZE]; | |
| 127 | unsigned int len; | |
| 128 | u8 buf[DATA_SIZE]; | |
| 129 | unsigned int idx; | |
| 130 | bool escape; | |
| 131 | bool started; | |
| e28a6c8b | 132 | struct mutex config_lock; |
| 05f3e58b | 133 | struct mutex write_lock; |
| e28a6c8b JF |
134 | bool config_pending; |
| 135 | bool restoring_config; | |
| 136 | bool autonomous; | |
| 3dff3106 HV |
137 | }; |
| 138 | ||
| e28a6c8b JF |
139 | static void pulse8_ping_eeprom_work_handler(struct work_struct *work); |
| 140 | ||
| 9d01315d | 141 | static void pulse8_irq_work_handler(struct work_struct *work) |
| 3dff3106 HV |
142 | { |
| 143 | struct pulse8 *pulse8 = | |
| 144 | container_of(work, struct pulse8, work); | |
| 145 | ||
| 146 | switch (pulse8->data[0] & 0x3f) { | |
| 147 | case MSGCODE_FRAME_DATA: | |
| 148 | cec_received_msg(pulse8->adap, &pulse8->rx_msg); | |
| 149 | break; | |
| 150 | case MSGCODE_TRANSMIT_SUCCEEDED: | |
| 2613cc6f | 151 | cec_transmit_attempt_done(pulse8->adap, CEC_TX_STATUS_OK); |
| 3dff3106 | 152 | break; |
| 3dff3106 | 153 | case MSGCODE_TRANSMIT_FAILED_ACK: |
| 2613cc6f | 154 | cec_transmit_attempt_done(pulse8->adap, CEC_TX_STATUS_NACK); |
| 3dff3106 | 155 | break; |
| 31f58e31 | 156 | case MSGCODE_TRANSMIT_FAILED_LINE: |
| 3dff3106 HV |
157 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA: |
| 158 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE: | |
| 2613cc6f | 159 | cec_transmit_attempt_done(pulse8->adap, CEC_TX_STATUS_ERROR); |
| 3dff3106 HV |
160 | break; |
| 161 | } | |
| 162 | } | |
| 163 | ||
| 164 | static irqreturn_t pulse8_interrupt(struct serio *serio, unsigned char data, | |
| 165 | unsigned int flags) | |
| 166 | { | |
| 167 | struct pulse8 *pulse8 = serio_get_drvdata(serio); | |
| 168 | ||
| 169 | if (!pulse8->started && data != MSGSTART) | |
| 170 | return IRQ_HANDLED; | |
| 171 | if (data == MSGESC) { | |
| 172 | pulse8->escape = true; | |
| 173 | return IRQ_HANDLED; | |
| 174 | } | |
| 175 | if (pulse8->escape) { | |
| 176 | data += MSGOFFSET; | |
| 177 | pulse8->escape = false; | |
| 178 | } else if (data == MSGEND) { | |
| 179 | struct cec_msg *msg = &pulse8->rx_msg; | |
| 180 | ||
| 181 | if (debug) | |
| 182 | dev_info(pulse8->dev, "received: %*ph\n", | |
| 183 | pulse8->idx, pulse8->buf); | |
| 184 | pulse8->data[0] = pulse8->buf[0]; | |
| 185 | switch (pulse8->buf[0] & 0x3f) { | |
| 186 | case MSGCODE_FRAME_START: | |
| 187 | msg->len = 1; | |
| 188 | msg->msg[0] = pulse8->buf[1]; | |
| 189 | break; | |
| 190 | case MSGCODE_FRAME_DATA: | |
| 191 | if (msg->len == CEC_MAX_MSG_SIZE) | |
| 192 | break; | |
| 193 | msg->msg[msg->len++] = pulse8->buf[1]; | |
| 194 | if (pulse8->buf[0] & MSGCODE_FRAME_EOM) | |
| 195 | schedule_work(&pulse8->work); | |
| 196 | break; | |
| 197 | case MSGCODE_TRANSMIT_SUCCEEDED: | |
| 198 | case MSGCODE_TRANSMIT_FAILED_LINE: | |
| 199 | case MSGCODE_TRANSMIT_FAILED_ACK: | |
| 200 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA: | |
| 201 | case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE: | |
| 202 | schedule_work(&pulse8->work); | |
| 203 | break; | |
| 31f58e31 HV |
204 | case MSGCODE_HIGH_ERROR: |
| 205 | case MSGCODE_LOW_ERROR: | |
| 206 | case MSGCODE_RECEIVE_FAILED: | |
| 3dff3106 HV |
207 | case MSGCODE_TIMEOUT_ERROR: |
| 208 | break; | |
| 209 | case MSGCODE_COMMAND_ACCEPTED: | |
| 210 | case MSGCODE_COMMAND_REJECTED: | |
| 211 | default: | |
| 212 | if (pulse8->idx == 0) | |
| 213 | break; | |
| 214 | memcpy(pulse8->data, pulse8->buf, pulse8->idx); | |
| 215 | pulse8->len = pulse8->idx; | |
| 216 | complete(&pulse8->cmd_done); | |
| 217 | break; | |
| 218 | } | |
| 219 | pulse8->idx = 0; | |
| 220 | pulse8->started = false; | |
| 221 | return IRQ_HANDLED; | |
| 222 | } else if (data == MSGSTART) { | |
| 223 | pulse8->idx = 0; | |
| 224 | pulse8->started = true; | |
| 225 | return IRQ_HANDLED; | |
| 226 | } | |
| 227 | ||
| 228 | if (pulse8->idx >= DATA_SIZE) { | |
| 229 | dev_dbg(pulse8->dev, | |
| 230 | "throwing away %d bytes of garbage\n", pulse8->idx); | |
| 231 | pulse8->idx = 0; | |
| 232 | } | |
| 233 | pulse8->buf[pulse8->idx++] = data; | |
| 234 | return IRQ_HANDLED; | |
| 235 | } | |
| 236 | ||
| 237 | static void pulse8_disconnect(struct serio *serio) | |
| 238 | { | |
| 239 | struct pulse8 *pulse8 = serio_get_drvdata(serio); | |
| 240 | ||
| 241 | cec_unregister_adapter(pulse8->adap); | |
| e28a6c8b | 242 | cancel_delayed_work_sync(&pulse8->ping_eeprom_work); |
| 3dff3106 HV |
243 | dev_info(&serio->dev, "disconnected\n"); |
| 244 | serio_close(serio); | |
| 245 | serio_set_drvdata(serio, NULL); | |
| 246 | kfree(pulse8); | |
| 247 | } | |
| 248 | ||
| 249 | static int pulse8_send(struct serio *serio, const u8 *command, u8 cmd_len) | |
| 250 | { | |
| 251 | int err = 0; | |
| 252 | ||
| 253 | err = serio_write(serio, MSGSTART); | |
| 254 | if (err) | |
| 255 | return err; | |
| 256 | for (; !err && cmd_len; command++, cmd_len--) { | |
| 257 | if (*command >= MSGESC) { | |
| 258 | err = serio_write(serio, MSGESC); | |
| 259 | if (!err) | |
| 260 | err = serio_write(serio, *command - MSGOFFSET); | |
| 261 | } else { | |
| 262 | err = serio_write(serio, *command); | |
| 263 | } | |
| 264 | } | |
| 265 | if (!err) | |
| 9d29327d | 266 | err = serio_write(serio, MSGEND); |
| 3dff3106 HV |
267 | |
| 268 | return err; | |
| 269 | } | |
| 270 | ||
| 05f3e58b JF |
271 | static int pulse8_send_and_wait_once(struct pulse8 *pulse8, |
| 272 | const u8 *cmd, u8 cmd_len, | |
| 273 | u8 response, u8 size) | |
| 3dff3106 HV |
274 | { |
| 275 | int err; | |
| 276 | ||
| 277 | /*dev_info(pulse8->dev, "transmit: %*ph\n", cmd_len, cmd);*/ | |
| 278 | init_completion(&pulse8->cmd_done); | |
| 279 | ||
| 280 | err = pulse8_send(pulse8->serio, cmd, cmd_len); | |
| 281 | if (err) | |
| 282 | return err; | |
| 283 | ||
| 284 | if (!wait_for_completion_timeout(&pulse8->cmd_done, HZ)) | |
| 285 | return -ETIMEDOUT; | |
| 286 | if ((pulse8->data[0] & 0x3f) == MSGCODE_COMMAND_REJECTED && | |
| 287 | cmd[0] != MSGCODE_SET_CONTROLLED && | |
| 288 | cmd[0] != MSGCODE_SET_AUTO_ENABLED && | |
| 05f3e58b JF |
289 | cmd[0] != MSGCODE_GET_BUILDDATE) |
| 290 | return -ENOTTY; | |
| 3dff3106 HV |
291 | if (response && |
| 292 | ((pulse8->data[0] & 0x3f) != response || pulse8->len < size + 1)) { | |
| 293 | dev_info(pulse8->dev, "transmit: failed %02x\n", | |
| 294 | pulse8->data[0] & 0x3f); | |
| 295 | return -EIO; | |
| 296 | } | |
| 297 | return 0; | |
| 298 | } | |
| 299 | ||
| 05f3e58b JF |
300 | static int pulse8_send_and_wait(struct pulse8 *pulse8, |
| 301 | const u8 *cmd, u8 cmd_len, u8 response, u8 size) | |
| 302 | { | |
| 303 | u8 cmd_sc[2]; | |
| 304 | int err; | |
| 305 | ||
| 306 | mutex_lock(&pulse8->write_lock); | |
| 307 | err = pulse8_send_and_wait_once(pulse8, cmd, cmd_len, response, size); | |
| 308 | ||
| 309 | if (err == -ENOTTY) { | |
| 310 | cmd_sc[0] = MSGCODE_SET_CONTROLLED; | |
| 311 | cmd_sc[1] = 1; | |
| 312 | err = pulse8_send_and_wait_once(pulse8, cmd_sc, 2, | |
| 313 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 314 | if (err) | |
| 315 | goto unlock; | |
| 316 | err = pulse8_send_and_wait_once(pulse8, cmd, cmd_len, | |
| 317 | response, size); | |
| 318 | } | |
| 319 | ||
| 320 | unlock: | |
| 321 | mutex_unlock(&pulse8->write_lock); | |
| 322 | return err == -ENOTTY ? -EIO : err; | |
| 323 | } | |
| 324 | ||
| e28a6c8b JF |
325 | static int pulse8_setup(struct pulse8 *pulse8, struct serio *serio, |
| 326 | struct cec_log_addrs *log_addrs, u16 *pa) | |
| 3dff3106 HV |
327 | { |
| 328 | u8 *data = pulse8->data + 1; | |
| 3dff3106 HV |
329 | u8 cmd[2]; |
| 330 | int err; | |
| 9d29327d JF |
331 | struct tm tm; |
| 332 | time_t date; | |
| 3dff3106 | 333 | |
| e28a6c8b JF |
334 | pulse8->vers = 0; |
| 335 | ||
| 3dff3106 | 336 | cmd[0] = MSGCODE_FIRMWARE_VERSION; |
| 9d29327d | 337 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 2); |
| 3dff3106 HV |
338 | if (err) |
| 339 | return err; | |
| e28a6c8b | 340 | pulse8->vers = (data[0] << 8) | data[1]; |
| e28a6c8b | 341 | dev_info(pulse8->dev, "Firmware version %04x\n", pulse8->vers); |
| b82e39f8 AB |
342 | if (pulse8->vers < 2) { |
| 343 | *pa = CEC_PHYS_ADDR_INVALID; | |
| 3dff3106 | 344 | return 0; |
| b82e39f8 | 345 | } |
| 3dff3106 HV |
346 | |
| 347 | cmd[0] = MSGCODE_GET_BUILDDATE; | |
| 9d29327d | 348 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 4); |
| e28a6c8b JF |
349 | if (err) |
| 350 | return err; | |
| 9d29327d JF |
351 | date = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]; |
| 352 | time_to_tm(date, 0, &tm); | |
| 353 | dev_info(pulse8->dev, "Firmware build date %04ld.%02d.%02d %02d:%02d:%02d\n", | |
| 354 | tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, | |
| 355 | tm.tm_hour, tm.tm_min, tm.tm_sec); | |
| 3dff3106 | 356 | |
| e28a6c8b JF |
357 | dev_dbg(pulse8->dev, "Persistent config:\n"); |
| 358 | cmd[0] = MSGCODE_GET_AUTO_ENABLED; | |
| 359 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); | |
| 360 | if (err) | |
| 361 | return err; | |
| 362 | pulse8->autonomous = data[0]; | |
| 363 | dev_dbg(pulse8->dev, "Autonomous mode: %s", | |
| 364 | data[0] ? "on" : "off"); | |
| 3dff3106 | 365 | |
| e28a6c8b JF |
366 | cmd[0] = MSGCODE_GET_DEVICE_TYPE; |
| 367 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); | |
| 368 | if (err) | |
| 369 | return err; | |
| 370 | log_addrs->primary_device_type[0] = data[0]; | |
| 371 | dev_dbg(pulse8->dev, "Primary device type: %d\n", data[0]); | |
| 372 | switch (log_addrs->primary_device_type[0]) { | |
| 373 | case CEC_OP_PRIM_DEVTYPE_TV: | |
| 374 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_TV; | |
| acd49735 | 375 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_TV; |
| e28a6c8b JF |
376 | break; |
| 377 | case CEC_OP_PRIM_DEVTYPE_RECORD: | |
| 378 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_RECORD; | |
| acd49735 | 379 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_RECORD; |
| e28a6c8b JF |
380 | break; |
| 381 | case CEC_OP_PRIM_DEVTYPE_TUNER: | |
| 382 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_TUNER; | |
| acd49735 | 383 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_TUNER; |
| e28a6c8b JF |
384 | break; |
| 385 | case CEC_OP_PRIM_DEVTYPE_PLAYBACK: | |
| 386 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_PLAYBACK; | |
| acd49735 | 387 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_PLAYBACK; |
| e28a6c8b JF |
388 | break; |
| 389 | case CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM: | |
| 390 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_PLAYBACK; | |
| acd49735 | 391 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM; |
| e28a6c8b JF |
392 | break; |
| 393 | case CEC_OP_PRIM_DEVTYPE_SWITCH: | |
| 394 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED; | |
| acd49735 | 395 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH; |
| e28a6c8b JF |
396 | break; |
| 397 | case CEC_OP_PRIM_DEVTYPE_PROCESSOR: | |
| 398 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_SPECIFIC; | |
| acd49735 | 399 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH; |
| e28a6c8b JF |
400 | break; |
| 401 | default: | |
| 402 | log_addrs->log_addr_type[0] = CEC_LOG_ADDR_TYPE_UNREGISTERED; | |
| acd49735 | 403 | log_addrs->all_device_types[0] = CEC_OP_ALL_DEVTYPE_SWITCH; |
| e28a6c8b JF |
404 | dev_info(pulse8->dev, "Unknown Primary Device Type: %d\n", |
| 405 | log_addrs->primary_device_type[0]); | |
| 406 | break; | |
| 407 | } | |
| 3dff3106 | 408 | |
| e28a6c8b JF |
409 | cmd[0] = MSGCODE_GET_LOGICAL_ADDRESS_MASK; |
| 410 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 2); | |
| 411 | if (err) | |
| 412 | return err; | |
| 413 | log_addrs->log_addr_mask = (data[0] << 8) | data[1]; | |
| 414 | dev_dbg(pulse8->dev, "Logical address ACK mask: %x\n", | |
| 415 | log_addrs->log_addr_mask); | |
| 416 | if (log_addrs->log_addr_mask) | |
| 417 | log_addrs->num_log_addrs = 1; | |
| 418 | ||
| 419 | cmd[0] = MSGCODE_GET_PHYSICAL_ADDRESS; | |
| 420 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); | |
| 421 | if (err) | |
| 422 | return err; | |
| 423 | *pa = (data[0] << 8) | data[1]; | |
| 424 | dev_dbg(pulse8->dev, "Physical address: %x.%x.%x.%x\n", | |
| 425 | cec_phys_addr_exp(*pa)); | |
| 3dff3106 | 426 | |
| e28a6c8b JF |
427 | cmd[0] = MSGCODE_GET_HDMI_VERSION; |
| 428 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 1); | |
| 429 | if (err) | |
| 430 | return err; | |
| 431 | log_addrs->cec_version = data[0]; | |
| 432 | dev_dbg(pulse8->dev, "CEC version: %d\n", log_addrs->cec_version); | |
| 433 | ||
| 434 | cmd[0] = MSGCODE_GET_OSD_NAME; | |
| 435 | err = pulse8_send_and_wait(pulse8, cmd, 1, cmd[0], 0); | |
| 436 | if (err) | |
| 437 | return err; | |
| 438 | strncpy(log_addrs->osd_name, data, 13); | |
| 439 | dev_dbg(pulse8->dev, "OSD name: %s\n", log_addrs->osd_name); | |
| 440 | ||
| 441 | return 0; | |
| 442 | } | |
| 443 | ||
| 444 | static int pulse8_apply_persistent_config(struct pulse8 *pulse8, | |
| 445 | struct cec_log_addrs *log_addrs, | |
| 446 | u16 pa) | |
| 447 | { | |
| 448 | int err; | |
| 449 | ||
| 450 | err = cec_s_log_addrs(pulse8->adap, log_addrs, false); | |
| 451 | if (err) | |
| 452 | return err; | |
| 453 | ||
| 454 | cec_s_phys_addr(pulse8->adap, pa, false); | |
| e28a6c8b JF |
455 | |
| 456 | return 0; | |
| 3dff3106 HV |
457 | } |
| 458 | ||
| 459 | static int pulse8_cec_adap_enable(struct cec_adapter *adap, bool enable) | |
| 460 | { | |
| bb25db50 | 461 | struct pulse8 *pulse8 = cec_get_drvdata(adap); |
| 3dff3106 HV |
462 | u8 cmd[16]; |
| 463 | int err; | |
| 464 | ||
| 465 | cmd[0] = MSGCODE_SET_CONTROLLED; | |
| 466 | cmd[1] = enable; | |
| 467 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 468 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 469 | return enable ? err : 0; | |
| 470 | } | |
| 471 | ||
| 472 | static int pulse8_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) | |
| 473 | { | |
| bb25db50 | 474 | struct pulse8 *pulse8 = cec_get_drvdata(adap); |
| 3dff3106 | 475 | u16 mask = 0; |
| e28a6c8b JF |
476 | u16 pa = adap->phys_addr; |
| 477 | u8 cmd[16]; | |
| 478 | int err = 0; | |
| 3dff3106 | 479 | |
| e28a6c8b | 480 | mutex_lock(&pulse8->config_lock); |
| 3dff3106 HV |
481 | if (log_addr != CEC_LOG_ADDR_INVALID) |
| 482 | mask = 1 << log_addr; | |
| 483 | cmd[0] = MSGCODE_SET_ACK_MASK; | |
| 484 | cmd[1] = mask >> 8; | |
| 485 | cmd[2] = mask & 0xff; | |
| 486 | err = pulse8_send_and_wait(pulse8, cmd, 3, | |
| 487 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| e28a6c8b JF |
488 | if ((err && mask != 0) || pulse8->restoring_config) |
| 489 | goto unlock; | |
| 490 | ||
| 491 | cmd[0] = MSGCODE_SET_AUTO_ENABLED; | |
| 492 | cmd[1] = log_addr == CEC_LOG_ADDR_INVALID ? 0 : 1; | |
| 493 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 494 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 495 | if (err) | |
| 496 | goto unlock; | |
| 497 | pulse8->autonomous = cmd[1]; | |
| 498 | if (log_addr == CEC_LOG_ADDR_INVALID) | |
| 499 | goto unlock; | |
| 500 | ||
| 501 | cmd[0] = MSGCODE_SET_DEVICE_TYPE; | |
| 502 | cmd[1] = adap->log_addrs.primary_device_type[0]; | |
| 503 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 504 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 505 | if (err) | |
| 506 | goto unlock; | |
| 507 | ||
| 58584b28 JF |
508 | switch (adap->log_addrs.primary_device_type[0]) { |
| 509 | case CEC_OP_PRIM_DEVTYPE_TV: | |
| 510 | mask = CEC_LOG_ADDR_MASK_TV; | |
| 511 | break; | |
| 512 | case CEC_OP_PRIM_DEVTYPE_RECORD: | |
| 513 | mask = CEC_LOG_ADDR_MASK_RECORD; | |
| 514 | break; | |
| 515 | case CEC_OP_PRIM_DEVTYPE_TUNER: | |
| 516 | mask = CEC_LOG_ADDR_MASK_TUNER; | |
| 517 | break; | |
| 518 | case CEC_OP_PRIM_DEVTYPE_PLAYBACK: | |
| 519 | mask = CEC_LOG_ADDR_MASK_PLAYBACK; | |
| 520 | break; | |
| 521 | case CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM: | |
| 522 | mask = CEC_LOG_ADDR_MASK_AUDIOSYSTEM; | |
| 523 | break; | |
| 524 | case CEC_OP_PRIM_DEVTYPE_SWITCH: | |
| 525 | mask = CEC_LOG_ADDR_MASK_UNREGISTERED; | |
| 526 | break; | |
| 527 | case CEC_OP_PRIM_DEVTYPE_PROCESSOR: | |
| 528 | mask = CEC_LOG_ADDR_MASK_SPECIFIC; | |
| 529 | break; | |
| 530 | default: | |
| 531 | mask = 0; | |
| 532 | break; | |
| 533 | } | |
| 534 | cmd[0] = MSGCODE_SET_LOGICAL_ADDRESS_MASK; | |
| 535 | cmd[1] = mask >> 8; | |
| 536 | cmd[2] = mask & 0xff; | |
| 537 | err = pulse8_send_and_wait(pulse8, cmd, 3, | |
| 538 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 539 | if (err) | |
| 540 | goto unlock; | |
| 541 | ||
| e28a6c8b JF |
542 | cmd[0] = MSGCODE_SET_DEFAULT_LOGICAL_ADDRESS; |
| 543 | cmd[1] = log_addr; | |
| 544 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 545 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 546 | if (err) | |
| 547 | goto unlock; | |
| 548 | ||
| 549 | cmd[0] = MSGCODE_SET_PHYSICAL_ADDRESS; | |
| 550 | cmd[1] = pa >> 8; | |
| 551 | cmd[2] = pa & 0xff; | |
| 552 | err = pulse8_send_and_wait(pulse8, cmd, 3, | |
| 553 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 554 | if (err) | |
| 555 | goto unlock; | |
| 556 | ||
| 557 | cmd[0] = MSGCODE_SET_HDMI_VERSION; | |
| 558 | cmd[1] = adap->log_addrs.cec_version; | |
| 559 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 560 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 561 | if (err) | |
| 562 | goto unlock; | |
| 563 | ||
| 564 | if (adap->log_addrs.osd_name[0]) { | |
| 565 | size_t osd_len = strlen(adap->log_addrs.osd_name); | |
| 566 | char *osd_str = cmd + 1; | |
| 567 | ||
| 568 | cmd[0] = MSGCODE_SET_OSD_NAME; | |
| 569 | strncpy(cmd + 1, adap->log_addrs.osd_name, 13); | |
| 570 | if (osd_len < 4) { | |
| 571 | memset(osd_str + osd_len, ' ', 4 - osd_len); | |
| 572 | osd_len = 4; | |
| 573 | osd_str[osd_len] = '\0'; | |
| 574 | strcpy(adap->log_addrs.osd_name, osd_str); | |
| 575 | } | |
| 576 | err = pulse8_send_and_wait(pulse8, cmd, 1 + osd_len, | |
| 577 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 578 | if (err) | |
| 579 | goto unlock; | |
| 580 | } | |
| 581 | ||
| 582 | unlock: | |
| 583 | if (pulse8->restoring_config) | |
| 584 | pulse8->restoring_config = false; | |
| 585 | else | |
| 586 | pulse8->config_pending = true; | |
| 587 | mutex_unlock(&pulse8->config_lock); | |
| 3dff3106 HV |
588 | return err; |
| 589 | } | |
| 590 | ||
| 591 | static int pulse8_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, | |
| 592 | u32 signal_free_time, struct cec_msg *msg) | |
| 593 | { | |
| bb25db50 | 594 | struct pulse8 *pulse8 = cec_get_drvdata(adap); |
| 3dff3106 HV |
595 | u8 cmd[2]; |
| 596 | unsigned int i; | |
| 597 | int err; | |
| 598 | ||
| 599 | cmd[0] = MSGCODE_TRANSMIT_IDLETIME; | |
| 1e6e9754 | 600 | cmd[1] = signal_free_time; |
| 3dff3106 HV |
601 | err = pulse8_send_and_wait(pulse8, cmd, 2, |
| 602 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 603 | cmd[0] = MSGCODE_TRANSMIT_ACK_POLARITY; | |
| 604 | cmd[1] = cec_msg_is_broadcast(msg); | |
| 605 | if (!err) | |
| 606 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 607 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 608 | cmd[0] = msg->len == 1 ? MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT; | |
| 609 | cmd[1] = msg->msg[0]; | |
| 610 | if (!err) | |
| 611 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 612 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 613 | if (!err && msg->len > 1) { | |
| 614 | cmd[0] = msg->len == 2 ? MSGCODE_TRANSMIT_EOM : | |
| 615 | MSGCODE_TRANSMIT; | |
| 616 | cmd[1] = msg->msg[1]; | |
| 617 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 618 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 619 | for (i = 0; !err && i + 2 < msg->len; i++) { | |
| 620 | cmd[0] = (i + 2 == msg->len - 1) ? | |
| 621 | MSGCODE_TRANSMIT_EOM : MSGCODE_TRANSMIT; | |
| 622 | cmd[1] = msg->msg[i + 2]; | |
| 623 | err = pulse8_send_and_wait(pulse8, cmd, 2, | |
| 624 | MSGCODE_COMMAND_ACCEPTED, 1); | |
| 625 | } | |
| 626 | } | |
| 627 | ||
| 628 | return err; | |
| 629 | } | |
| 630 | ||
| 631 | static int pulse8_received(struct cec_adapter *adap, struct cec_msg *msg) | |
| 632 | { | |
| 633 | return -ENOMSG; | |
| 634 | } | |
| 635 | ||
| babbf091 | 636 | static const struct cec_adap_ops pulse8_cec_adap_ops = { |
| 3dff3106 HV |
637 | .adap_enable = pulse8_cec_adap_enable, |
| 638 | .adap_log_addr = pulse8_cec_adap_log_addr, | |
| 639 | .adap_transmit = pulse8_cec_adap_transmit, | |
| 640 | .received = pulse8_received, | |
| 641 | }; | |
| 642 | ||
| 643 | static int pulse8_connect(struct serio *serio, struct serio_driver *drv) | |
| 644 | { | |
| 645 | u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS | CEC_CAP_PHYS_ADDR | | |
| 646 | CEC_CAP_PASSTHROUGH | CEC_CAP_RC | CEC_CAP_MONITOR_ALL; | |
| 647 | struct pulse8 *pulse8; | |
| 648 | int err = -ENOMEM; | |
| e28a6c8b | 649 | struct cec_log_addrs log_addrs = {}; |
| c3b80983 | 650 | u16 pa = CEC_PHYS_ADDR_INVALID; |
| 3dff3106 HV |
651 | |
| 652 | pulse8 = kzalloc(sizeof(*pulse8), GFP_KERNEL); | |
| 653 | ||
| 654 | if (!pulse8) | |
| 655 | return -ENOMEM; | |
| 656 | ||
| 657 | pulse8->serio = serio; | |
| 658 | pulse8->adap = cec_allocate_adapter(&pulse8_cec_adap_ops, pulse8, | |
| f51e8080 | 659 | "HDMI CEC", caps, 1); |
| 3dff3106 HV |
660 | err = PTR_ERR_OR_ZERO(pulse8->adap); |
| 661 | if (err < 0) | |
| 662 | goto free_device; | |
| 663 | ||
| 664 | pulse8->dev = &serio->dev; | |
| 665 | serio_set_drvdata(serio, pulse8); | |
| 666 | INIT_WORK(&pulse8->work, pulse8_irq_work_handler); | |
| 05f3e58b | 667 | mutex_init(&pulse8->write_lock); |
| e28a6c8b JF |
668 | mutex_init(&pulse8->config_lock); |
| 669 | pulse8->config_pending = false; | |
| 3dff3106 HV |
670 | |
| 671 | err = serio_open(serio, drv); | |
| 672 | if (err) | |
| 673 | goto delete_adap; | |
| 674 | ||
| e28a6c8b | 675 | err = pulse8_setup(pulse8, serio, &log_addrs, &pa); |
| 3dff3106 HV |
676 | if (err) |
| 677 | goto close_serio; | |
| 678 | ||
| f51e8080 | 679 | err = cec_register_adapter(pulse8->adap, &serio->dev); |
| 3dff3106 HV |
680 | if (err < 0) |
| 681 | goto close_serio; | |
| 682 | ||
| 683 | pulse8->dev = &pulse8->adap->devnode.dev; | |
| e28a6c8b JF |
684 | |
| 685 | if (persistent_config && pulse8->autonomous) { | |
| 686 | err = pulse8_apply_persistent_config(pulse8, &log_addrs, pa); | |
| 687 | if (err) | |
| 688 | goto close_serio; | |
| 689 | pulse8->restoring_config = true; | |
| 690 | } | |
| 691 | ||
| 692 | INIT_DELAYED_WORK(&pulse8->ping_eeprom_work, | |
| 693 | pulse8_ping_eeprom_work_handler); | |
| 694 | schedule_delayed_work(&pulse8->ping_eeprom_work, PING_PERIOD); | |
| 695 | ||
| 3dff3106 HV |
696 | return 0; |
| 697 | ||
| 698 | close_serio: | |
| 699 | serio_close(serio); | |
| 700 | delete_adap: | |
| 701 | cec_delete_adapter(pulse8->adap); | |
| 702 | serio_set_drvdata(serio, NULL); | |
| 703 | free_device: | |
| 704 | kfree(pulse8); | |
| 705 | return err; | |
| 706 | } | |
| 707 | ||
| e28a6c8b JF |
708 | static void pulse8_ping_eeprom_work_handler(struct work_struct *work) |
| 709 | { | |
| 710 | struct pulse8 *pulse8 = | |
| 711 | container_of(work, struct pulse8, ping_eeprom_work.work); | |
| 712 | u8 cmd; | |
| 713 | ||
| 714 | schedule_delayed_work(&pulse8->ping_eeprom_work, PING_PERIOD); | |
| 715 | cmd = MSGCODE_PING; | |
| 716 | pulse8_send_and_wait(pulse8, &cmd, 1, | |
| 717 | MSGCODE_COMMAND_ACCEPTED, 0); | |
| 718 | ||
| 719 | if (pulse8->vers < 2) | |
| 720 | return; | |
| 721 | ||
| 722 | mutex_lock(&pulse8->config_lock); | |
| 723 | if (pulse8->config_pending && persistent_config) { | |
| 724 | dev_dbg(pulse8->dev, "writing pending config to EEPROM\n"); | |
| 725 | cmd = MSGCODE_WRITE_EEPROM; | |
| 726 | if (pulse8_send_and_wait(pulse8, &cmd, 1, | |
| 727 | MSGCODE_COMMAND_ACCEPTED, 0)) | |
| 728 | dev_info(pulse8->dev, "failed to write pending config to EEPROM\n"); | |
| 729 | else | |
| 730 | pulse8->config_pending = false; | |
| 731 | } | |
| 732 | mutex_unlock(&pulse8->config_lock); | |
| 733 | } | |
| 734 | ||
| 3dff3106 HV |
735 | static struct serio_device_id pulse8_serio_ids[] = { |
| 736 | { | |
| 737 | .type = SERIO_RS232, | |
| 738 | .proto = SERIO_PULSE8_CEC, | |
| 739 | .id = SERIO_ANY, | |
| 740 | .extra = SERIO_ANY, | |
| 741 | }, | |
| 742 | { 0 } | |
| 743 | }; | |
| 744 | ||
| 745 | MODULE_DEVICE_TABLE(serio, pulse8_serio_ids); | |
| 746 | ||
| 747 | static struct serio_driver pulse8_drv = { | |
| 748 | .driver = { | |
| 749 | .name = "pulse8-cec", | |
| 750 | }, | |
| 751 | .description = "Pulse Eight HDMI CEC driver", | |
| 752 | .id_table = pulse8_serio_ids, | |
| 753 | .interrupt = pulse8_interrupt, | |
| 754 | .connect = pulse8_connect, | |
| 755 | .disconnect = pulse8_disconnect, | |
| 756 | }; | |
| 757 | ||
| 758 | module_serio_driver(pulse8_drv); |