LXR linux/drivers/media/pci/ttpci/av7110

   1/*
   2 * Driver for the remote control of SAA7146 based AV7110 cards
   3 *
   4 * Copyright (C) 1999-2003 Holger Waechtler <holger@convergence.de>
   5 * Copyright (C) 2003-2007 Oliver Endriss <o.endriss@gmx.de>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License
   9 * as published by the Free Software Foundation; either version 2
  10 * of the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 * To obtain the license, point your browser to
  17 * http://www.gnu.org/copyleft/gpl.html
  18 *
  19 */
  20
  21
  22#include <linux/types.h>
  23#include <linux/init.h>
  24#include <linux/module.h>
  25#include <linux/proc_fs.h>
  26#include <linux/kernel.h>
  27#include <linux/bitops.h>
  28
  29#include "av7110.h"
  30#include "av7110_hw.h"
  31
  32
  33#define AV_CNT          4
  34
  35#define IR_RC5          0
  36#define IR_RCMM         1
  37#define IR_RC5_EXT      2 /* internal only */
  38
  39#define IR_ALL          0xffffffff
  40
  41#define UP_TIMEOUT      (HZ*7/25)
  42
  43
  44/* Note: enable ir debugging by or'ing debug with 16 */
  45
  46static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM};
  47module_param_array(ir_protocol, int, NULL, 0644);
  48MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)");
  49
  50static int ir_inversion[AV_CNT];
  51module_param_array(ir_inversion, int, NULL, 0644);
  52MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted");
  53
  54static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL };
  55module_param_array(ir_device_mask, uint, NULL, 0644);
  56MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)");
  57
  58
  59static int av_cnt;
  60static struct av7110 *av_list[AV_CNT];
  61
  62static u16 default_key_map [256] = {
  63        KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7,
  64        KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO,
  65        KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  66        KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0,
  67        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  68        0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0,
  69        0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0,
  70        KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0,
  71        KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0,
  72        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW,
  73        KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0,
  74        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  75        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  76        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  77        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  78        0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN,
  79        0, 0, 0, 0, KEY_EPG, 0, 0, 0,
  80        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  81        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  82        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR
  83};
  84
  85
  86/* key-up timer */
  87static void av7110_emit_keyup(unsigned long parm)
  88{
  89        struct infrared *ir = (struct infrared *) parm;
  90
  91        if (!ir || !test_bit(ir->last_key, ir->input_dev->key))
  92                return;
  93
  94        input_report_key(ir->input_dev, ir->last_key, 0);
  95        input_sync(ir->input_dev);
  96}
  97
  98
  99/* tasklet */
 100static void av7110_emit_key(unsigned long parm)
 101{
 102        struct infrared *ir = (struct infrared *) parm;
 103        u32 ircom = ir->ir_command;
 104        u8 data;
 105        u8 addr;
 106        u16 toggle;
 107        u16 keycode;
 108
 109        /* extract device address and data */
 110        switch (ir->protocol) {
 111        case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
 112                data = ircom & 0x3f;
 113                addr = (ircom >> 6) & 0x1f;
 114                toggle = ircom & 0x0800;
 115                break;
 116
 117        case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
 118                data = ircom & 0xff;
 119                addr = (ircom >> 8) & 0x1f;
 120                toggle = ircom & 0x8000;
 121                break;
 122
 123        case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
 124                data = ircom & 0x3f;
 125                addr = (ircom >> 6) & 0x1f;
 126                /* invert 7th data bit for backward compatibility with RC5 keymaps */
 127                if (!(ircom & 0x1000))
 128                        data |= 0x40;
 129                toggle = ircom & 0x0800;
 130                break;
 131
 132        default:
 133                printk("%s invalid protocol %x\n", __func__, ir->protocol);
 134                return;
 135        }
 136
 137        input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
 138        input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
 139
 140        keycode = ir->key_map[data];
 141
 142        dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
 143                __func__, ircom, addr, data, keycode);
 144
 145        /* check device address */
 146        if (!(ir->device_mask & (1 << addr)))
 147                return;
 148
 149        if (!keycode) {
 150                printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
 151                        __func__, ircom, addr, data);
 152                return;
 153        }
 154
 155        if (timer_pending(&ir->keyup_timer)) {
 156                del_timer(&ir->keyup_timer);
 157                if (ir->last_key != keycode || toggle != ir->last_toggle) {
 158                        ir->delay_timer_finished = 0;
 159                        input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
 160                        input_event(ir->input_dev, EV_KEY, keycode, 1);
 161                        input_sync(ir->input_dev);
 162                } else if (ir->delay_timer_finished) {
 163                        input_event(ir->input_dev, EV_KEY, keycode, 2);
 164                        input_sync(ir->input_dev);
 165                }
 166        } else {
 167                ir->delay_timer_finished = 0;
 168                input_event(ir->input_dev, EV_KEY, keycode, 1);
 169                input_sync(ir->input_dev);
 170        }
 171
 172        ir->last_key = keycode;
 173        ir->last_toggle = toggle;
 174
 175        ir->keyup_timer.expires = jiffies + UP_TIMEOUT;
 176        add_timer(&ir->keyup_timer);
 177
 178}
 179
 180
 181/* register with input layer */
 182static void input_register_keys(struct infrared *ir)
 183{
 184        int i;
 185
 186        set_bit(EV_KEY, ir->input_dev->evbit);
 187        set_bit(EV_REP, ir->input_dev->evbit);
 188        set_bit(EV_MSC, ir->input_dev->evbit);
 189
 190        set_bit(MSC_RAW, ir->input_dev->mscbit);
 191        set_bit(MSC_SCAN, ir->input_dev->mscbit);
 192
 193        memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
 194
 195        for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
 196                if (ir->key_map[i] > KEY_MAX)
 197                        ir->key_map[i] = 0;
 198                else if (ir->key_map[i] > KEY_RESERVED)
 199                        set_bit(ir->key_map[i], ir->input_dev->keybit);
 200        }
 201
 202        ir->input_dev->keycode = ir->key_map;
 203        ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
 204        ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
 205}
 206
 207
 208/* called by the input driver after rep[REP_DELAY] ms */
 209static void input_repeat_key(unsigned long parm)
 210{
 211        struct infrared *ir = (struct infrared *) parm;
 212
 213        ir->delay_timer_finished = 1;
 214}
 215
 216
 217/* check for configuration changes */
 218int av7110_check_ir_config(struct av7110 *av7110, int force)
 219{
 220        int i;
 221        int modified = force;
 222        int ret = -ENODEV;
 223
 224        for (i = 0; i < av_cnt; i++)
 225                if (av7110 == av_list[i])
 226                        break;
 227
 228        if (i < av_cnt && av7110) {
 229                if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
 230                    av7110->ir.inversion != ir_inversion[i])
 231                        modified = true;
 232
 233                if (modified) {
 234                        /* protocol */
 235                        if (ir_protocol[i]) {
 236                                ir_protocol[i] = 1;
 237                                av7110->ir.protocol = IR_RCMM;
 238                                av7110->ir.ir_config = 0x0001;
 239                        } else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
 240                                av7110->ir.protocol = IR_RC5_EXT;
 241                                av7110->ir.ir_config = 0x0002;
 242                        } else {
 243                                av7110->ir.protocol = IR_RC5;
 244                                av7110->ir.ir_config = 0x0000;
 245                        }
 246                        /* inversion */
 247                        if (ir_inversion[i]) {
 248                                ir_inversion[i] = 1;
 249                                av7110->ir.ir_config |= 0x8000;
 250                        }
 251                        av7110->ir.inversion = ir_inversion[i];
 252                        /* update ARM */
 253                        ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
 254                                                av7110->ir.ir_config);
 255                } else
 256                        ret = 0;
 257
 258                /* address */
 259                if (av7110->ir.device_mask != ir_device_mask[i])
 260                        av7110->ir.device_mask = ir_device_mask[i];
 261        }
 262
 263        return ret;
 264}
 265
 266
 267/* /proc/av7110_ir interface */
 268static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer,
 269                                    size_t count, loff_t *pos)
 270{
 271        char *page;
 272        u32 ir_config;
 273        int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
 274        int i;
 275
 276        if (count < size)
 277                return -EINVAL;
 278
 279        page = vmalloc(size);
 280        if (!page)
 281                return -ENOMEM;
 282
 283        if (copy_from_user(page, buffer, size)) {
 284                vfree(page);
 285                return -EFAULT;
 286        }
 287
 288        memcpy(&ir_config, page, sizeof ir_config);
 289
 290        for (i = 0; i < av_cnt; i++) {
 291                /* keymap */
 292                memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
 293                        sizeof(av_list[i]->ir.key_map));
 294                /* protocol, inversion, address */
 295                ir_protocol[i] = ir_config & 0x0001;
 296                ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
 297                if (ir_config & 0x4000)
 298                        ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
 299                else
 300                        ir_device_mask[i] = IR_ALL;
 301                /* update configuration */
 302                av7110_check_ir_config(av_list[i], false);
 303                input_register_keys(&av_list[i]->ir);
 304        }
 305        vfree(page);
 306        return count;
 307}
 308
 309static const struct file_operations av7110_ir_proc_fops = {
 310        .owner          = THIS_MODULE,
 311        .write          = av7110_ir_proc_write,
 312        .llseek         = noop_llseek,
 313};
 314
 315/* interrupt handler */
 316static void ir_handler(struct av7110 *av7110, u32 ircom)
 317{
 318        dprintk(4, "ir command = %08x\n", ircom);
 319        av7110->ir.ir_command = ircom;
 320        tasklet_schedule(&av7110->ir.ir_tasklet);
 321}
 322
 323
 324int av7110_ir_init(struct av7110 *av7110)
 325{
 326        struct input_dev *input_dev;
 327        static struct proc_dir_entry *e;
 328        int err;
 329
 330        if (av_cnt >= ARRAY_SIZE(av_list))
 331                return -ENOSPC;
 332
 333        av_list[av_cnt++] = av7110;
 334        av7110_check_ir_config(av7110, true);
 335
 336        setup_timer(&av7110->ir.keyup_timer, av7110_emit_keyup,
 337                    (unsigned long)&av7110->ir);
 338
 339        input_dev = input_allocate_device();
 340        if (!input_dev)
 341                return -ENOMEM;
 342
 343        av7110->ir.input_dev = input_dev;
 344        snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
 345                "pci-%s/ir0", pci_name(av7110->dev->pci));
 346
 347        input_dev->name = "DVB on-card IR receiver";
 348
 349        input_dev->phys = av7110->ir.input_phys;
 350        input_dev->id.bustype = BUS_PCI;
 351        input_dev->id.version = 2;
 352        if (av7110->dev->pci->subsystem_vendor) {
 353                input_dev->id.vendor = av7110->dev->pci->subsystem_vendor;
 354                input_dev->id.product = av7110->dev->pci->subsystem_device;
 355        } else {
 356                input_dev->id.vendor = av7110->dev->pci->vendor;
 357                input_dev->id.product = av7110->dev->pci->device;
 358        }
 359        input_dev->dev.parent = &av7110->dev->pci->dev;
 360        /* initial keymap */
 361        memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map);
 362        input_register_keys(&av7110->ir);
 363        err = input_register_device(input_dev);
 364        if (err) {
 365                input_free_device(input_dev);
 366                return err;
 367        }
 368        input_dev->timer.function = input_repeat_key;
 369        input_dev->timer.data = (unsigned long) &av7110->ir;
 370
 371        if (av_cnt == 1) {
 372                e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops);
 373                if (e)
 374                        proc_set_size(e, 4 + 256 * sizeof(u16));
 375        }
 376
 377        tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
 378        av7110->ir.ir_handler = ir_handler;
 379
 380        return 0;
 381}
 382
 383
 384void av7110_ir_exit(struct av7110 *av7110)
 385{
 386        int i;
 387
 388        if (av_cnt == 0)
 389                return;
 390
 391        del_timer_sync(&av7110->ir.keyup_timer);
 392        av7110->ir.ir_handler = NULL;
 393        tasklet_kill(&av7110->ir.ir_tasklet);
 394
 395        for (i = 0; i < av_cnt; i++)
 396                if (av_list[i] == av7110) {
 397                        av_list[i] = av_list[av_cnt-1];
 398                        av_list[av_cnt-1] = NULL;
 399                        break;
 400                }
 401
 402        if (av_cnt == 1)
 403                remove_proc_entry("av7110_ir", NULL);
 404
 405        input_unregister_device(av7110->ir.input_dev);
 406
 407        av_cnt--;
 408}
 409
 410//MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
 411//MODULE_LICENSE("GPL");
 412