Jarod Wilson | 457e2ff | 2011-01-18 02:33:08 -0300 | [diff] [blame] | 1 | /* ir-lirc-codec.c - rc-core to classic lirc interface bridge |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 2 | * |
| 3 | * Copyright (C) 2010 by Jarod Wilson <jarod@redhat.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation version 2 of the License. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/sched.h> |
| 16 | #include <linux/wait.h> |
| 17 | #include <media/lirc.h> |
Jarod Wilson | 5690085 | 2010-07-16 14:25:33 -0300 | [diff] [blame] | 18 | #include <media/lirc_dev.h> |
Mauro Carvalho Chehab | 6bda964 | 2010-11-17 13:28:38 -0300 | [diff] [blame] | 19 | #include <media/rc-core.h> |
Mauro Carvalho Chehab | f62de67 | 2010-11-09 23:09:57 -0300 | [diff] [blame] | 20 | #include "rc-core-priv.h" |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 21 | |
| 22 | #define LIRCBUF_SIZE 256 |
| 23 | |
| 24 | /** |
| 25 | * ir_lirc_decode() - Send raw IR data to lirc_dev to be relayed to the |
| 26 | * lircd userspace daemon for decoding. |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 27 | * @input_dev: the struct rc_dev descriptor of the device |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 28 | * @duration: the struct ir_raw_event descriptor of the pulse/space |
| 29 | * |
| 30 | * This function returns -EINVAL if the lirc interfaces aren't wired up. |
| 31 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 32 | static int ir_lirc_decode(struct rc_dev *dev, struct ir_raw_event ev) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 33 | { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 34 | struct lirc_codec *lirc = &dev->raw->lirc; |
Maxim Levitsky | 510fcb7 | 2010-07-31 11:59:15 -0300 | [diff] [blame] | 35 | int sample; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 36 | |
Mauro Carvalho Chehab | 52b6614 | 2010-11-17 14:20:52 -0300 | [diff] [blame] | 37 | if (!(dev->raw->enabled_protocols & RC_TYPE_LIRC)) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 38 | return 0; |
| 39 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 40 | if (!dev->raw->lirc.drv || !dev->raw->lirc.drv->rbuf) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 41 | return -EINVAL; |
| 42 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 43 | /* Packet start */ |
| 44 | if (ev.reset) |
Maxim Levitsky | 510fcb7 | 2010-07-31 11:59:15 -0300 | [diff] [blame] | 45 | return 0; |
| 46 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 47 | /* Carrier reports */ |
| 48 | if (ev.carrier_report) { |
| 49 | sample = LIRC_FREQUENCY(ev.carrier); |
Jarod Wilson | 457e2ff | 2011-01-18 02:33:08 -0300 | [diff] [blame] | 50 | IR_dprintk(2, "carrier report (freq: %d)\n", sample); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 51 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 52 | /* Packet end */ |
| 53 | } else if (ev.timeout) { |
| 54 | |
| 55 | if (lirc->gap) |
| 56 | return 0; |
| 57 | |
| 58 | lirc->gap_start = ktime_get(); |
| 59 | lirc->gap = true; |
| 60 | lirc->gap_duration = ev.duration; |
| 61 | |
| 62 | if (!lirc->send_timeout_reports) |
| 63 | return 0; |
| 64 | |
| 65 | sample = LIRC_TIMEOUT(ev.duration / 1000); |
Jarod Wilson | 457e2ff | 2011-01-18 02:33:08 -0300 | [diff] [blame] | 66 | IR_dprintk(2, "timeout report (duration: %d)\n", sample); |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 67 | |
| 68 | /* Normal sample */ |
| 69 | } else { |
| 70 | |
| 71 | if (lirc->gap) { |
| 72 | int gap_sample; |
| 73 | |
| 74 | lirc->gap_duration += ktime_to_ns(ktime_sub(ktime_get(), |
| 75 | lirc->gap_start)); |
| 76 | |
| 77 | /* Convert to ms and cap by LIRC_VALUE_MASK */ |
| 78 | do_div(lirc->gap_duration, 1000); |
| 79 | lirc->gap_duration = min(lirc->gap_duration, |
| 80 | (u64)LIRC_VALUE_MASK); |
| 81 | |
| 82 | gap_sample = LIRC_SPACE(lirc->gap_duration); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 83 | lirc_buffer_write(dev->raw->lirc.drv->rbuf, |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 84 | (unsigned char *) &gap_sample); |
| 85 | lirc->gap = false; |
| 86 | } |
| 87 | |
| 88 | sample = ev.pulse ? LIRC_PULSE(ev.duration / 1000) : |
| 89 | LIRC_SPACE(ev.duration / 1000); |
Jarod Wilson | 457e2ff | 2011-01-18 02:33:08 -0300 | [diff] [blame] | 90 | IR_dprintk(2, "delivering %uus %s to lirc_dev\n", |
| 91 | TO_US(ev.duration), TO_STR(ev.pulse)); |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 92 | } |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 93 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 94 | lirc_buffer_write(dev->raw->lirc.drv->rbuf, |
Maxim Levitsky | 510fcb7 | 2010-07-31 11:59:15 -0300 | [diff] [blame] | 95 | (unsigned char *) &sample); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 96 | wake_up(&dev->raw->lirc.drv->rbuf->wait_poll); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 97 | |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf, |
| 102 | size_t n, loff_t *ppos) |
| 103 | { |
| 104 | struct lirc_codec *lirc; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 105 | struct rc_dev *dev; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 106 | int *txbuf; /* buffer with values to transmit */ |
Vasiliy Kulikov | 4c8b869 | 2010-11-26 14:06:35 -0300 | [diff] [blame] | 107 | int ret = 0; |
| 108 | size_t count; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 109 | |
| 110 | lirc = lirc_get_pdata(file); |
| 111 | if (!lirc) |
| 112 | return -EFAULT; |
| 113 | |
| 114 | if (n % sizeof(int)) |
| 115 | return -EINVAL; |
| 116 | |
| 117 | count = n / sizeof(int); |
Vasiliy Kulikov | 4c8b869 | 2010-11-26 14:06:35 -0300 | [diff] [blame] | 118 | if (count > LIRCBUF_SIZE || count % 2 == 0 || n % sizeof(int) != 0) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 119 | return -EINVAL; |
| 120 | |
Jarod Wilson | 6efb870 | 2010-07-16 18:29:54 -0300 | [diff] [blame] | 121 | txbuf = memdup_user(buf, n); |
| 122 | if (IS_ERR(txbuf)) |
| 123 | return PTR_ERR(txbuf); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 124 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 125 | dev = lirc->dev; |
| 126 | if (!dev) { |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 127 | ret = -EFAULT; |
| 128 | goto out; |
| 129 | } |
| 130 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 131 | if (dev->tx_ir) |
| 132 | ret = dev->tx_ir(dev, txbuf, (u32)n); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 133 | |
| 134 | out: |
| 135 | kfree(txbuf); |
| 136 | return ret; |
| 137 | } |
| 138 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 139 | static long ir_lirc_ioctl(struct file *filep, unsigned int cmd, |
| 140 | unsigned long __user arg) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 141 | { |
| 142 | struct lirc_codec *lirc; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 143 | struct rc_dev *dev; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 144 | int ret = 0; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 145 | __u32 val = 0, tmp; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 146 | |
| 147 | lirc = lirc_get_pdata(filep); |
| 148 | if (!lirc) |
| 149 | return -EFAULT; |
| 150 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 151 | dev = lirc->dev; |
| 152 | if (!dev) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 153 | return -EFAULT; |
| 154 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 155 | if (_IOC_DIR(cmd) & _IOC_WRITE) { |
Jarod Wilson | be1f985 | 2010-10-08 17:24:21 -0300 | [diff] [blame] | 156 | ret = get_user(val, (__u32 *)arg); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 157 | if (ret) |
| 158 | return ret; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 159 | } |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 160 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 161 | switch (cmd) { |
| 162 | |
| 163 | /* legacy support */ |
| 164 | case LIRC_GET_SEND_MODE: |
| 165 | val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK; |
| 166 | break; |
| 167 | |
| 168 | case LIRC_SET_SEND_MODE: |
| 169 | if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK)) |
| 170 | return -EINVAL; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 171 | return 0; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 172 | |
| 173 | /* TX settings */ |
| 174 | case LIRC_SET_TRANSMITTER_MASK: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 175 | if (!dev->s_tx_mask) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 176 | return -EINVAL; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 177 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 178 | return dev->s_tx_mask(dev, val); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 179 | |
| 180 | case LIRC_SET_SEND_CARRIER: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 181 | if (!dev->s_tx_carrier) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 182 | return -EINVAL; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 183 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 184 | return dev->s_tx_carrier(dev, val); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 185 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 186 | case LIRC_SET_SEND_DUTY_CYCLE: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 187 | if (!dev->s_tx_duty_cycle) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 188 | return -ENOSYS; |
| 189 | |
| 190 | if (val <= 0 || val >= 100) |
| 191 | return -EINVAL; |
| 192 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 193 | return dev->s_tx_duty_cycle(dev, val); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 194 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 195 | /* RX settings */ |
| 196 | case LIRC_SET_REC_CARRIER: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 197 | if (!dev->s_rx_carrier_range) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 198 | return -ENOSYS; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 199 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 200 | if (val <= 0) |
| 201 | return -EINVAL; |
| 202 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 203 | return dev->s_rx_carrier_range(dev, |
| 204 | dev->raw->lirc.carrier_low, |
| 205 | val); |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 206 | |
| 207 | case LIRC_SET_REC_CARRIER_RANGE: |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 208 | if (val <= 0) |
| 209 | return -EINVAL; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 210 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 211 | dev->raw->lirc.carrier_low = val; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 212 | return 0; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 213 | |
| 214 | case LIRC_GET_REC_RESOLUTION: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 215 | val = dev->rx_resolution; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 216 | break; |
| 217 | |
| 218 | case LIRC_SET_WIDEBAND_RECEIVER: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 219 | if (!dev->s_learning_mode) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 220 | return -ENOSYS; |
| 221 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 222 | return dev->s_learning_mode(dev, !!val); |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 223 | |
| 224 | case LIRC_SET_MEASURE_CARRIER_MODE: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 225 | if (!dev->s_carrier_report) |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 226 | return -ENOSYS; |
| 227 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 228 | return dev->s_carrier_report(dev, !!val); |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 229 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 230 | /* Generic timeout support */ |
| 231 | case LIRC_GET_MIN_TIMEOUT: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 232 | if (!dev->max_timeout) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 233 | return -ENOSYS; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 234 | val = dev->min_timeout / 1000; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 235 | break; |
| 236 | |
| 237 | case LIRC_GET_MAX_TIMEOUT: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 238 | if (!dev->max_timeout) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 239 | return -ENOSYS; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 240 | val = dev->max_timeout / 1000; |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 241 | break; |
| 242 | |
| 243 | case LIRC_SET_REC_TIMEOUT: |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 244 | if (!dev->max_timeout) |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 245 | return -ENOSYS; |
| 246 | |
| 247 | tmp = val * 1000; |
| 248 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 249 | if (tmp < dev->min_timeout || |
| 250 | tmp > dev->max_timeout) |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 251 | return -EINVAL; |
| 252 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 253 | dev->timeout = tmp; |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 254 | break; |
| 255 | |
| 256 | case LIRC_SET_REC_TIMEOUT_REPORTS: |
| 257 | lirc->send_timeout_reports = !!val; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 258 | break; |
| 259 | |
| 260 | default: |
Arnd Bergmann | 044e587 | 2010-08-02 15:43:35 -0300 | [diff] [blame] | 261 | return lirc_dev_fop_ioctl(filep, cmd, arg); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 262 | } |
| 263 | |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 264 | if (_IOC_DIR(cmd) & _IOC_READ) |
Jarod Wilson | be1f985 | 2010-10-08 17:24:21 -0300 | [diff] [blame] | 265 | ret = put_user(val, (__u32 *)arg); |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 266 | |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 267 | return ret; |
| 268 | } |
| 269 | |
| 270 | static int ir_lirc_open(void *data) |
| 271 | { |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | static void ir_lirc_close(void *data) |
| 276 | { |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | static struct file_operations lirc_fops = { |
| 281 | .owner = THIS_MODULE, |
| 282 | .write = ir_lirc_transmit_ir, |
Arnd Bergmann | 044e587 | 2010-08-02 15:43:35 -0300 | [diff] [blame] | 283 | .unlocked_ioctl = ir_lirc_ioctl, |
Jarod Wilson | 8be292c | 2010-10-09 15:07:06 -0300 | [diff] [blame] | 284 | #ifdef CONFIG_COMPAT |
| 285 | .compat_ioctl = ir_lirc_ioctl, |
| 286 | #endif |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 287 | .read = lirc_dev_fop_read, |
| 288 | .poll = lirc_dev_fop_poll, |
| 289 | .open = lirc_dev_fop_open, |
| 290 | .release = lirc_dev_fop_close, |
Arnd Bergmann | d9d2e9d | 2010-08-15 18:51:56 +0200 | [diff] [blame] | 291 | .llseek = no_llseek, |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 292 | }; |
| 293 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 294 | static int ir_lirc_register(struct rc_dev *dev) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 295 | { |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 296 | struct lirc_driver *drv; |
| 297 | struct lirc_buffer *rbuf; |
| 298 | int rc = -ENOMEM; |
| 299 | unsigned long features; |
| 300 | |
| 301 | drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL); |
| 302 | if (!drv) |
| 303 | return rc; |
| 304 | |
| 305 | rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL); |
Dan Carpenter | 49b7a12 | 2010-07-23 07:08:26 -0300 | [diff] [blame] | 306 | if (!rbuf) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 307 | goto rbuf_alloc_failed; |
| 308 | |
| 309 | rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE); |
| 310 | if (rc) |
| 311 | goto rbuf_init_failed; |
| 312 | |
| 313 | features = LIRC_CAN_REC_MODE2; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 314 | if (dev->tx_ir) { |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 315 | features |= LIRC_CAN_SEND_PULSE; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 316 | if (dev->s_tx_mask) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 317 | features |= LIRC_CAN_SET_TRANSMITTER_MASK; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 318 | if (dev->s_tx_carrier) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 319 | features |= LIRC_CAN_SET_SEND_CARRIER; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 320 | if (dev->s_tx_duty_cycle) |
Maxim Levitsky | 67332ba | 2010-09-06 18:26:08 -0300 | [diff] [blame] | 321 | features |= LIRC_CAN_SET_SEND_DUTY_CYCLE; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 322 | } |
| 323 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 324 | if (dev->s_rx_carrier_range) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 325 | features |= LIRC_CAN_SET_REC_CARRIER | |
| 326 | LIRC_CAN_SET_REC_CARRIER_RANGE; |
| 327 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 328 | if (dev->s_learning_mode) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 329 | features |= LIRC_CAN_USE_WIDEBAND_RECEIVER; |
| 330 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 331 | if (dev->s_carrier_report) |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 332 | features |= LIRC_CAN_MEASURE_CARRIER; |
| 333 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 334 | if (dev->max_timeout) |
Maxim Levitsky | e589333 | 2010-07-31 11:59:23 -0300 | [diff] [blame] | 335 | features |= LIRC_CAN_SET_REC_TIMEOUT; |
| 336 | |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 337 | snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)", |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 338 | dev->driver_name); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 339 | drv->minor = -1; |
| 340 | drv->features = features; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 341 | drv->data = &dev->raw->lirc; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 342 | drv->rbuf = rbuf; |
| 343 | drv->set_use_inc = &ir_lirc_open; |
| 344 | drv->set_use_dec = &ir_lirc_close; |
| 345 | drv->code_length = sizeof(struct ir_raw_event) * 8; |
| 346 | drv->fops = &lirc_fops; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 347 | drv->dev = &dev->dev; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 348 | drv->owner = THIS_MODULE; |
| 349 | |
| 350 | drv->minor = lirc_register_driver(drv); |
| 351 | if (drv->minor < 0) { |
| 352 | rc = -ENODEV; |
| 353 | goto lirc_register_failed; |
| 354 | } |
| 355 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 356 | dev->raw->lirc.drv = drv; |
| 357 | dev->raw->lirc.dev = dev; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 358 | return 0; |
| 359 | |
| 360 | lirc_register_failed: |
| 361 | rbuf_init_failed: |
| 362 | kfree(rbuf); |
| 363 | rbuf_alloc_failed: |
| 364 | kfree(drv); |
| 365 | |
| 366 | return rc; |
| 367 | } |
| 368 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 369 | static int ir_lirc_unregister(struct rc_dev *dev) |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 370 | { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 371 | struct lirc_codec *lirc = &dev->raw->lirc; |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 372 | |
| 373 | lirc_unregister_driver(lirc->drv->minor); |
| 374 | lirc_buffer_free(lirc->drv->rbuf); |
| 375 | kfree(lirc->drv); |
| 376 | |
| 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | static struct ir_raw_handler lirc_handler = { |
Mauro Carvalho Chehab | 52b6614 | 2010-11-17 14:20:52 -0300 | [diff] [blame] | 381 | .protocols = RC_TYPE_LIRC, |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 382 | .decode = ir_lirc_decode, |
| 383 | .raw_register = ir_lirc_register, |
| 384 | .raw_unregister = ir_lirc_unregister, |
| 385 | }; |
| 386 | |
| 387 | static int __init ir_lirc_codec_init(void) |
| 388 | { |
| 389 | ir_raw_handler_register(&lirc_handler); |
| 390 | |
| 391 | printk(KERN_INFO "IR LIRC bridge handler initialized\n"); |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static void __exit ir_lirc_codec_exit(void) |
| 396 | { |
| 397 | ir_raw_handler_unregister(&lirc_handler); |
| 398 | } |
| 399 | |
| 400 | module_init(ir_lirc_codec_init); |
| 401 | module_exit(ir_lirc_codec_exit); |
| 402 | |
| 403 | MODULE_LICENSE("GPL"); |
| 404 | MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>"); |
| 405 | MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)"); |
| 406 | MODULE_DESCRIPTION("LIRC IR handler bridge"); |