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(struct timer_list *t)
  88{
  89        struct infrared *ir = from_timer(ir, t, keyup_timer);
  90
  91        if (!ir || !ir->keypressed)
  92                return;
  93
  94        input_report_key(ir->input_dev, ir->last_key, 0);
  95        input_sync(ir->input_dev);
  96        ir->keypressed = false;
  97}
  98
  99
 100/* tasklet */
 101static void av7110_emit_key(unsigned long parm)
 102{
 103        struct infrared *ir = (struct infrared *) parm;
 104        u32 ircom = ir->ir_command;
 105        u8 data;
 106        u8 addr;
 107        u16 toggle;
 108        u16 keycode;
 109
 110        /* extract device address and data */
 111        switch (ir->protocol) {
 112        case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
 113                data = ircom & 0x3f;
 114                addr = (ircom >> 6) & 0x1f;
 115                toggle = ircom & 0x0800;
 116                break;
 117
 118        case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
 119                data = ircom & 0xff;
 120                addr = (ircom >> 8) & 0x1f;
 121                toggle = ircom & 0x8000;
 122                break;
 123
 124        case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
 125                data = ircom & 0x3f;
 126                addr = (ircom >> 6) & 0x1f;
 127                /* invert 7th data bit for backward compatibility with RC5 keymaps */
 128                if (!(ircom & 0x1000))
 129                        data |= 0x40;
 130                toggle = ircom & 0x0800;
 131                break;
 132
 133        default:
 134                printk("%s invalid protocol %x\n", __func__, ir->protocol);
 135                return;
 136        }
 137
 138        input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
 139        input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
 140
 141        keycode = ir->key_map[data];
 142
 143        dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
 144                __func__, ircom, addr, data, keycode);
 145
 146        /* check device address */
 147        if (!(ir->device_mask & (1 << addr)))
 148                return;
 149
 150        if (!keycode) {
 151                printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
 152                        __func__, ircom, addr, data);
 153                return;
 154        }
 155
 156        if (ir->keypressed &&
 157            (ir->last_key != keycode || toggle != ir->last_toggle))
 158                input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
 159
 160        input_event(ir->input_dev, EV_KEY, keycode, 1);
 161        input_sync(ir->input_dev);
 162
 163        ir->keypressed = true;
 164        ir->last_key = keycode;
 165        ir->last_toggle = toggle;
 166
 167        mod_timer(&ir->keyup_timer, jiffies + UP_TIMEOUT);
 168}
 169
 170
 171/* register with input layer */
 172static void input_register_keys(struct infrared *ir)
 173{
 174        int i;
 175
 176        set_bit(EV_KEY, ir->input_dev->evbit);
 177        set_bit(EV_REP, ir->input_dev->evbit);
 178        set_bit(EV_MSC, ir->input_dev->evbit);
 179
 180        set_bit(MSC_RAW, ir->input_dev->mscbit);
 181        set_bit(MSC_SCAN, ir->input_dev->mscbit);
 182
 183        memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
 184
 185        for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
 186                if (ir->key_map[i] > KEY_MAX)
 187                        ir->key_map[i] = 0;
 188                else if (ir->key_map[i] > KEY_RESERVED)
 189                        set_bit(ir->key_map[i], ir->input_dev->keybit);
 190        }
 191
 192        ir->input_dev->keycode = ir->key_map;
 193        ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
 194        ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
 195}
 196
 197/* check for configuration changes */
 198int av7110_check_ir_config(struct av7110 *av7110, int force)
 199{
 200        int i;
 201        int modified = force;
 202        int ret = -ENODEV;
 203
 204        for (i = 0; i < av_cnt; i++)
 205                if (av7110 == av_list[i])
 206                        break;
 207
 208        if (i < av_cnt && av7110) {
 209                if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
 210                    av7110->ir.inversion != ir_inversion[i])
 211                        modified = true;
 212
 213                if (modified) {
 214                        /* protocol */
 215                        if (ir_protocol[i]) {
 216                                ir_protocol[i] = 1;
 217                                av7110->ir.protocol = IR_RCMM;
 218                                av7110->ir.ir_config = 0x0001;
 219                        } else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
 220                                av7110->ir.protocol = IR_RC5_EXT;
 221                                av7110->ir.ir_config = 0x0002;
 222                        } else {
 223                                av7110->ir.protocol = IR_RC5;
 224                                av7110->ir.ir_config = 0x0000;
 225                        }
 226                        /* inversion */
 227                        if (ir_inversion[i]) {
 228                                ir_inversion[i] = 1;
 229                                av7110->ir.ir_config |= 0x8000;
 230                        }
 231                        av7110->ir.inversion = ir_inversion[i];
 232                        /* update ARM */
 233                        ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
 234                                                av7110->ir.ir_config);
 235                } else
 236                        ret = 0;
 237
 238                /* address */
 239                if (av7110->ir.device_mask != ir_device_mask[i])
 240                        av7110->ir.device_mask = ir_device_mask[i];
 241        }
 242
 243        return ret;
 244}
 245
 246
 247/* /proc/av7110_ir interface */
 248static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer,
 249                                    size_t count, loff_t *pos)
 250{
 251        char *page;
 252        u32 ir_config;
 253        int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
 254        int i;
 255
 256        if (count < size)
 257                return -EINVAL;
 258
 259        page = vmalloc(size);
 260        if (!page)
 261                return -ENOMEM;
 262
 263        if (copy_from_user(page, buffer, size)) {
 264                vfree(page);
 265                return -EFAULT;
 266        }
 267
 268        memcpy(&ir_config, page, sizeof ir_config);
 269
 270        for (i = 0; i < av_cnt; i++) {
 271                /* keymap */
 272                memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
 273                        sizeof(av_list[i]->ir.key_map));
 274                /* protocol, inversion, address */
 275                ir_protocol[i] = ir_config & 0x0001;
 276                ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
 277                if (ir_config & 0x4000)
 278                        ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
 279                else
 280                        ir_device_mask[i] = IR_ALL;
 281                /* update configuration */
 282                av7110_check_ir_config(av_list[i], false);
 283                input_register_keys(&av_list[i]->ir);
 284        }
 285        vfree(page);
 286        return count;
 287}
 288
 289static const struct file_operations av7110_ir_proc_fops = {
 290        .owner          = THIS_MODULE,
 291        .write          = av7110_ir_proc_write,
 292        .llseek         = noop_llseek,
 293};
 294
 295/* interrupt handler */
 296static void ir_handler(struct av7110 *av7110, u32 ircom)
 297{
 298        dprintk(4, "ir command = %08x\n", ircom);
 299        av7110->ir.ir_command = ircom;
 300        tasklet_schedule(&av7110->ir.ir_tasklet);
 301}
 302
 303
 304int av7110_ir_init(struct av7110 *av7110)
 305{
 306        struct input_dev *input_dev;
 307        static struct proc_dir_entry *e;
 308        int err;
 309
 310        if (av_cnt >= ARRAY_SIZE(av_list))
 311                return -ENOSPC;
 312
 313        av_list[av_cnt++] = av7110;
 314        av7110_check_ir_config(av7110, true);
 315
 316        timer_setup(&av7110->ir.keyup_timer, av7110_emit_keyup, 0);
 317
 318        input_dev = input_allocate_device();
 319        if (!input_dev)
 320                return -ENOMEM;
 321
 322        av7110->ir.input_dev = input_dev;
 323        snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
 324                "pci-%s/ir0", pci_name(av7110->dev->pci));
 325
 326        input_dev->name = "DVB on-card IR receiver";
 327
 328        input_dev->phys = av7110->ir.input_phys;
 329        input_dev->id.bustype = BUS_PCI;
 330        input_dev->id.version = 2;
 331        if (av7110->dev->pci->subsystem_vendor) {
 332                input_dev->id.vendor = av7110->dev->pci->subsystem_vendor;
 333                input_dev->id.product = av7110->dev->pci->subsystem_device;
 334        } else {
 335                input_dev->id.vendor = av7110->dev->pci->vendor;
 336                input_dev->id.product = av7110->dev->pci->device;
 337        }
 338        input_dev->dev.parent = &av7110->dev->pci->dev;
 339        /* initial keymap */
 340        memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map);
 341        input_register_keys(&av7110->ir);
 342        err = input_register_device(input_dev);
 343        if (err) {
 344                input_free_device(input_dev);
 345                return err;
 346        }
 347
 348        /*
 349         * Input core's default autorepeat is 33 cps with 250 msec
 350         * delay, let's adjust to numbers more suitable for remote
 351         * control.
 352         */
 353        input_enable_softrepeat(input_dev, 250, 125);
 354
 355        if (av_cnt == 1) {
 356                e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops);
 357                if (e)
 358                        proc_set_size(e, 4 + 256 * sizeof(u16));
 359        }
 360
 361        tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
 362        av7110->ir.ir_handler = ir_handler;
 363
 364        return 0;
 365}
 366
 367
 368void av7110_ir_exit(struct av7110 *av7110)
 369{
 370        int i;
 371
 372        if (av_cnt == 0)
 373                return;
 374
 375        del_timer_sync(&av7110->ir.keyup_timer);
 376        av7110->ir.ir_handler = NULL;
 377        tasklet_kill(&av7110->ir.ir_tasklet);
 378
 379        for (i = 0; i < av_cnt; i++)
 380                if (av_list[i] == av7110) {
 381                        av_list[i] = av_list[av_cnt-1];
 382                        av_list[av_cnt-1] = NULL;
 383                        break;
 384                }
 385
 386        if (av_cnt == 1)
 387                remove_proc_entry("av7110_ir", NULL);
 388
 389        input_unregister_device(av7110->ir.input_dev);
 390
 391        av_cnt--;
 392}
 393
 394//MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
 395//MODULE_LICENSE("GPL");
 396