diff options
Diffstat (limited to 'drivers/media/video')
-rw-r--r-- | drivers/media/video/bt8xx/bttv-cards.c | 179 | ||||
-rw-r--r-- | drivers/media/video/bt8xx/bttv-driver.c | 41 | ||||
-rw-r--r-- | drivers/media/video/bt8xx/bttv-i2c.c | 53 | ||||
-rw-r--r-- | drivers/media/video/bt8xx/bttv.h | 7 | ||||
-rw-r--r-- | drivers/media/video/bt8xx/bttvp.h | 5 |
5 files changed, 180 insertions, 105 deletions
diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c index 1536ab5..b9c3ba5 100644 --- a/drivers/media/video/bt8xx/bttv-cards.c +++ b/drivers/media/video/bt8xx/bttv-cards.c @@ -96,12 +96,10 @@ static unsigned int pll[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET }; static unsigned int tuner[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET }; static unsigned int svhs[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET }; static unsigned int remote[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = UNSET }; +static unsigned int audiodev[BTTV_MAX]; +static unsigned int saa6588[BTTV_MAX]; static struct bttv *master[BTTV_MAX] = { [ 0 ... (BTTV_MAX-1) ] = NULL }; -#ifdef MODULE -static unsigned int autoload = 1; -#else -static unsigned int autoload; -#endif +static unsigned int autoload = UNSET; static unsigned int gpiomask = UNSET; static unsigned int audioall = UNSET; static unsigned int audiomux[5] = { [ 0 ... 4 ] = UNSET }; @@ -120,6 +118,7 @@ module_param_array(pll, int, NULL, 0444); module_param_array(tuner, int, NULL, 0444); module_param_array(svhs, int, NULL, 0444); module_param_array(remote, int, NULL, 0444); +module_param_array(audiodev, int, NULL, 0444); module_param_array(audiomux, int, NULL, 0444); MODULE_PARM_DESC(triton1,"set ETBF pci config bit " @@ -130,7 +129,14 @@ MODULE_PARM_DESC(latency,"pci latency timer"); MODULE_PARM_DESC(card,"specify TV/grabber card model, see CARDLIST file for a list"); MODULE_PARM_DESC(pll,"specify installed crystal (0=none, 28=28 MHz, 35=35 MHz)"); MODULE_PARM_DESC(tuner,"specify installed tuner type"); -MODULE_PARM_DESC(autoload,"automatically load i2c modules like tuner.o, default is 1 (yes)"); +MODULE_PARM_DESC(autoload, "obsolete option, please do not use anymore"); +MODULE_PARM_DESC(audiodev, "specify audio device:\n" + "\t\t-1 = no audio\n" + "\t\t 0 = autodetect (default)\n" + "\t\t 1 = msp3400\n" + "\t\t 2 = tda7432\n" + "\t\t 3 = tvaudio"); +MODULE_PARM_DESC(saa6588, "if 1, then load the saa6588 RDS module, default (0) is to use the card definition."); MODULE_PARM_DESC(no_overlay,"allow override overlay default (0 disables, 1 enables)" " [some VIA/SIS chipsets are known to have problem with overlay]"); @@ -3318,6 +3324,17 @@ void __devinit bttv_init_card1(struct bttv *btv) /* initialization part two -- after registering i2c bus */ void __devinit bttv_init_card2(struct bttv *btv) { + static const unsigned short tvaudio_addrs[] = { + I2C_ADDR_TDA8425 >> 1, + I2C_ADDR_TEA6300 >> 1, + I2C_ADDR_TEA6420 >> 1, + I2C_ADDR_TDA9840 >> 1, + I2C_ADDR_TDA985x_L >> 1, + I2C_ADDR_TDA985x_H >> 1, + I2C_ADDR_TDA9874 >> 1, + I2C_ADDR_PIC16C54 >> 1, + I2C_CLIENT_END + }; int addr=ADDR_UNSET; btv->tuner_type = UNSET; @@ -3481,6 +3498,12 @@ void __devinit bttv_init_card2(struct bttv *btv) printk(KERN_INFO "bttv%d: tuner type=%d\n", btv->c.nr, btv->tuner_type); + if (autoload != UNSET) { + printk(KERN_WARNING "bttv%d: the autoload option is obsolete.\n", btv->c.nr); + printk(KERN_WARNING "bttv%d: use option msp3400, tda7432 or tvaudio to\n", btv->c.nr); + printk(KERN_WARNING "bttv%d: override which audio module should be used.\n", btv->c.nr); + } + if (UNSET == btv->tuner_type) btv->tuner_type = TUNER_ABSENT; @@ -3488,8 +3511,13 @@ void __devinit bttv_init_card2(struct bttv *btv) struct tuner_setup tun_setup; /* Load tuner module before issuing tuner config call! */ - if (autoload) - request_module("tuner"); + if (bttv_tvcards[btv->c.type].has_radio) + v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "tuner", "tuner", v4l2_i2c_tuner_addrs(ADDRS_RADIO)); + v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, "tuner", + "tuner", v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); + v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, "tuner", + "tuner", v4l2_i2c_tuner_addrs(ADDRS_TV_WITH_DEMOD)); tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV; tun_setup.type = btv->tuner_type; @@ -3498,7 +3526,7 @@ void __devinit bttv_init_card2(struct bttv *btv) if (bttv_tvcards[btv->c.type].has_radio) tun_setup.mode_mask |= T_RADIO; - bttv_call_i2c_clients(btv, TUNER_SET_TYPE_ADDR, &tun_setup); + bttv_call_all(btv, tuner, s_type_addr, &tun_setup); } if (btv->tda9887_conf) { @@ -3507,7 +3535,7 @@ void __devinit bttv_init_card2(struct bttv *btv) tda9887_cfg.tuner = TUNER_TDA9887; tda9887_cfg.priv = &btv->tda9887_conf; - bttv_call_i2c_clients(btv, TUNER_SET_CONFIG, &tda9887_cfg); + bttv_call_all(btv, tuner, s_config, &tda9887_cfg); } btv->dig = bttv_tvcards[btv->c.type].has_dig_in ? @@ -3530,31 +3558,127 @@ void __devinit bttv_init_card2(struct bttv *btv) if (bttv_tvcards[btv->c.type].audio_mode_gpio) btv->audio_mode_gpio=bttv_tvcards[btv->c.type].audio_mode_gpio; - if (!autoload) - return; - if (btv->tuner_type == TUNER_ABSENT) return; /* no tuner or related drivers to load */ + if (btv->has_saa6588 || saa6588[btv->c.nr]) { + /* Probe for RDS receiver chip */ + static const unsigned short addrs[] = { + 0x20 >> 1, + 0x22 >> 1, + I2C_CLIENT_END + }; + struct v4l2_subdev *sd; + + sd = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "saa6588", "saa6588", addrs); + btv->has_saa6588 = (sd != NULL); + } + /* try to detect audio/fader chips */ - if (!bttv_tvcards[btv->c.type].no_msp34xx && - bttv_I2CRead(btv, I2C_ADDR_MSP3400, "MSP34xx") >=0) - request_module("msp3400"); - if (bttv_tvcards[btv->c.type].msp34xx_alt && - bttv_I2CRead(btv, I2C_ADDR_MSP3400_ALT, "MSP34xx (alternate address)") >=0) - request_module("msp3400"); + /* First check if the user specified the audio chip via a module + option. */ + + switch (audiodev[btv->c.nr]) { + case -1: + return; /* do not load any audio module */ + + case 0: /* autodetect */ + break; + + case 1: { + /* The user specified that we should probe for msp3400 */ + static const unsigned short addrs[] = { + I2C_ADDR_MSP3400 >> 1, + I2C_ADDR_MSP3400_ALT >> 1, + I2C_CLIENT_END + }; + + btv->sd_msp34xx = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "msp3400", "msp3400", addrs); + if (btv->sd_msp34xx) + return; + goto no_audio; + } + + case 2: { + /* The user specified that we should probe for tda7432 */ + static const unsigned short addrs[] = { + I2C_ADDR_TDA7432 >> 1, + I2C_CLIENT_END + }; + + if (v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "tda7432", "tda7432", addrs)) + return; + goto no_audio; + } - if (!bttv_tvcards[btv->c.type].no_tda9875 && - bttv_I2CRead(btv, I2C_ADDR_TDA9875, "TDA9875") >=0) - request_module("tda9875"); + case 3: { + /* The user specified that we should probe for tvaudio */ + btv->sd_tvaudio = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "tvaudio", "tvaudio", tvaudio_addrs); + if (btv->sd_tvaudio) + return; + goto no_audio; + } - if (!bttv_tvcards[btv->c.type].no_tda7432 && - bttv_I2CRead(btv, I2C_ADDR_TDA7432, "TDA7432") >=0) - request_module("tda7432"); + default: + printk(KERN_WARNING "bttv%d: unknown audiodev value!\n", + btv->c.nr); + return; + } + + /* There were no overrides, so now we try to discover this through the + card definition */ + + /* probe for msp3400 first: this driver can detect whether or not + it really is a msp3400, so it will return NULL when the device + found is really something else (e.g. a tea6300). */ + if (!bttv_tvcards[btv->c.type].no_msp34xx) { + static const unsigned short addrs[] = { + I2C_ADDR_MSP3400 >> 1, + I2C_CLIENT_END + }; + + btv->sd_msp34xx = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "msp3400", "msp3400", addrs); + } else if (bttv_tvcards[btv->c.type].msp34xx_alt) { + static const unsigned short addrs[] = { + I2C_ADDR_MSP3400_ALT >> 1, + I2C_CLIENT_END + }; + + btv->sd_msp34xx = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "msp3400", "msp3400", addrs); + } + + /* If we found a msp34xx, then we're done. */ + if (btv->sd_msp34xx) + return; + + /* it might also be a tda7432. */ + if (!bttv_tvcards[btv->c.type].no_tda7432) { + static const unsigned short addrs[] = { + I2C_ADDR_TDA7432 >> 1, + I2C_CLIENT_END + }; + + if (v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "tda7432", "tda7432", addrs)) + return; + } + + /* Now see if we can find one of the tvaudio devices. */ + btv->sd_tvaudio = v4l2_i2c_new_probed_subdev(&btv->c.i2c_adap, + "tvaudio", "tvaudio", tvaudio_addrs); + if (btv->sd_tvaudio) + return; - if (bttv_tvcards[btv->c.type].needs_tvaudio) - request_module("tvaudio"); +no_audio: + printk(KERN_WARNING "bttv%d: audio absent, no audio device found!\n", + btv->c.nr); } @@ -3626,6 +3750,7 @@ static int terratec_active_radio_upgrade(struct bttv *btv) printk("bttv%d: Terratec Active Radio Upgrade found.\n", btv->c.nr); btv->has_radio = 1; + btv->has_saa6588 = 1; btv->has_matchbox = 1; } else { btv->has_radio = 0; diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c index 1dc79b8..7a8ca0d 100644 --- a/drivers/media/video/bt8xx/bttv-driver.c +++ b/drivers/media/video/bt8xx/bttv-driver.c @@ -1163,7 +1163,6 @@ audio_mux(struct bttv *btv, int input, int mute) { int gpio_val, signal; struct v4l2_control ctrl; - struct i2c_client *c; gpio_inout(bttv_tvcards[btv->c.type].gpiomask, bttv_tvcards[btv->c.type].gpiomask); @@ -1197,9 +1196,8 @@ audio_mux(struct bttv *btv, int input, int mute) ctrl.id = V4L2_CID_AUDIO_MUTE; ctrl.value = btv->mute; - bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, &ctrl); - c = btv->i2c_msp34xx_client; - if (c) { + bttv_call_all(btv, core, s_ctrl, &ctrl); + if (btv->sd_msp34xx) { struct v4l2_routing route; /* Note: the inputs tuner/radio/extern/intern are translated @@ -1238,15 +1236,14 @@ audio_mux(struct bttv *btv, int input, int mute) break; } route.output = MSP_OUTPUT_DEFAULT; - c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route); + v4l2_subdev_call(btv->sd_msp34xx, audio, s_routing, &route); } - c = btv->i2c_tvaudio_client; - if (c) { + if (btv->sd_tvaudio) { struct v4l2_routing route; route.input = input; route.output = 0; - c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route); + v4l2_subdev_call(btv->sd_tvaudio, audio, s_routing, &route); } return 0; } @@ -1332,7 +1329,7 @@ set_tvnorm(struct bttv *btv, unsigned int norm) break; } id = tvnorm->v4l2_id; - bttv_call_i2c_clients(btv, VIDIOC_S_STD, &id); + bttv_call_all(btv, tuner, s_std, id); return 0; } @@ -1476,7 +1473,7 @@ static int bttv_g_ctrl(struct file *file, void *priv, case V4L2_CID_AUDIO_BALANCE: case V4L2_CID_AUDIO_BASS: case V4L2_CID_AUDIO_TREBLE: - bttv_call_i2c_clients(btv, VIDIOC_G_CTRL, c); + bttv_call_all(btv, core, g_ctrl, c); break; case V4L2_CID_PRIVATE_CHROMA_AGC: @@ -1550,12 +1547,12 @@ static int bttv_s_ctrl(struct file *file, void *f, if (btv->volume_gpio) btv->volume_gpio(btv, c->value); - bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, c); + bttv_call_all(btv, core, s_ctrl, c); break; case V4L2_CID_AUDIO_BALANCE: case V4L2_CID_AUDIO_BASS: case V4L2_CID_AUDIO_TREBLE: - bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, c); + bttv_call_all(btv, core, s_ctrl, c); break; case V4L2_CID_PRIVATE_CHROMA_AGC: @@ -1973,7 +1970,7 @@ static int bttv_s_tuner(struct file *file, void *priv, return -EINVAL; mutex_lock(&btv->lock); - bttv_call_i2c_clients(btv, VIDIOC_S_TUNER, t); + bttv_call_all(btv, tuner, s_tuner, t); if (btv->audio_mode_gpio) btv->audio_mode_gpio(btv, t, 1); @@ -2018,7 +2015,7 @@ static int bttv_s_frequency(struct file *file, void *priv, return -EINVAL; mutex_lock(&btv->lock); btv->freq = f->frequency; - bttv_call_i2c_clients(btv, VIDIOC_S_FREQUENCY, f); + bttv_call_all(btv, tuner, s_frequency, f); if (btv->has_matchbox && btv->radio_user) tea5757_set_freq(btv, btv->freq); mutex_unlock(&btv->lock); @@ -2032,7 +2029,7 @@ static int bttv_log_status(struct file *file, void *f) printk(KERN_INFO "bttv%d: ======== START STATUS CARD #%d ========\n", btv->c.nr, btv->c.nr); - bttv_call_i2c_clients(btv, VIDIOC_LOG_STATUS, NULL); + bttv_call_all(btv, core, log_status); printk(KERN_INFO "bttv%d: ======== END STATUS CARD #%d ========\n", btv->c.nr, btv->c.nr); return 0; @@ -2946,7 +2943,7 @@ static int bttv_g_tuner(struct file *file, void *priv, mutex_lock(&btv->lock); t->rxsubchans = V4L2_TUNER_SUB_MONO; - bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t); + bttv_call_all(btv, tuner, g_tuner, t); strcpy(t->name, "Television"); t->capability = V4L2_TUNER_CAP_NORM; t->type = V4L2_TUNER_ANALOG_TV; @@ -3437,7 +3434,7 @@ static int radio_open(struct file *file) btv->radio_user++; - bttv_call_i2c_clients(btv,AUDC_SET_RADIO,NULL); + bttv_call_all(btv, tuner, s_radio); audio_input(btv,TVAUDIO_INPUT_RADIO); mutex_unlock(&btv->lock); @@ -3457,7 +3454,7 @@ static int radio_release(struct file *file) btv->radio_user--; - bttv_call_i2c_clients(btv, RDS_CMD_CLOSE, &cmd); + bttv_call_all(btv, core, ioctl, RDS_CMD_CLOSE, &cmd); return 0; } @@ -3490,7 +3487,7 @@ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) strcpy(t->name, "Radio"); t->type = V4L2_TUNER_RADIO; - bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t); + bttv_call_all(btv, tuner, g_tuner, t); if (btv->audio_mode_gpio) btv->audio_mode_gpio(btv, t, 0); @@ -3532,7 +3529,7 @@ static int radio_s_tuner(struct file *file, void *priv, if (0 != t->index) return -EINVAL; - bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t); + bttv_call_all(btv, tuner, g_tuner, t); return 0; } @@ -3593,7 +3590,7 @@ static ssize_t radio_read(struct file *file, char __user *data, cmd.instance = file; cmd.result = -ENODEV; - bttv_call_i2c_clients(btv, RDS_CMD_READ, &cmd); + bttv_call_all(btv, core, ioctl, RDS_CMD_READ, &cmd); return cmd.result; } @@ -3606,7 +3603,7 @@ static unsigned int radio_poll(struct file *file, poll_table *wait) cmd.instance = file; cmd.event_list = wait; cmd.result = -ENODEV; - bttv_call_i2c_clients(btv, RDS_CMD_POLL, &cmd); + bttv_call_all(btv, core, ioctl, RDS_CMD_POLL, &cmd); return cmd.result; } diff --git a/drivers/media/video/bt8xx/bttv-i2c.c b/drivers/media/video/bt8xx/bttv-i2c.c index 9b66c5b..a99d92f 100644 --- a/drivers/media/video/bt8xx/bttv-i2c.c +++ b/drivers/media/video/bt8xx/bttv-i2c.c @@ -36,8 +36,6 @@ #include <linux/jiffies.h> #include <asm/io.h> -static int attach_inform(struct i2c_client *client); - static int i2c_debug; static int i2c_hw; static int i2c_scan; @@ -266,51 +264,6 @@ static const struct i2c_algorithm bttv_algo = { /* ----------------------------------------------------------------------- */ /* I2C functions - common stuff */ -static int attach_inform(struct i2c_client *client) -{ - struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter); - struct bttv *btv = to_bttv(v4l2_dev); - int addr=ADDR_UNSET; - - - if (ADDR_UNSET != bttv_tvcards[btv->c.type].tuner_addr) - addr = bttv_tvcards[btv->c.type].tuner_addr; - - - if (bttv_debug) - printk(KERN_DEBUG "bttv%d: %s i2c attach [addr=0x%x,client=%s]\n", - btv->c.nr, client->driver->driver.name, client->addr, - client->name); - if (!client->driver->command) - return 0; - - if (client->driver->id == I2C_DRIVERID_MSP3400) - btv->i2c_msp34xx_client = client; - if (client->driver->id == I2C_DRIVERID_TVAUDIO) - btv->i2c_tvaudio_client = client; - if (btv->tuner_type != TUNER_ABSENT) { - struct tuner_setup tun_setup; - - if (addr == ADDR_UNSET || addr == client->addr) { - tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV | T_RADIO; - tun_setup.type = btv->tuner_type; - tun_setup.addr = addr; - bttv_call_i2c_clients(btv, TUNER_SET_TYPE_ADDR, &tun_setup); - } - - } - - return 0; -} - -void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg) -{ - if (0 != btv->i2c_rc) - return; - i2c_clients_command(&btv->c.i2c_adap, cmd, arg); -} - - /* read I2C */ int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for) { @@ -417,8 +370,6 @@ int __devinit init_bttv_i2c(struct bttv *btv) btv->c.i2c_adap.algo_data = &btv->i2c_algo; } btv->c.i2c_adap.owner = THIS_MODULE; - btv->c.i2c_adap.class = I2C_CLASS_TV_ANALOG; - btv->c.i2c_adap.client_register = attach_inform; btv->c.i2c_adap.dev.parent = &btv->c.pci->dev; snprintf(btv->c.i2c_adap.name, sizeof(btv->c.i2c_adap.name), @@ -428,10 +379,6 @@ int __devinit init_bttv_i2c(struct bttv *btv) i2c_set_adapdata(&btv->c.i2c_adap, &btv->c.v4l2_dev); btv->i2c_client.adapter = &btv->c.i2c_adap; - if (bttv_tvcards[btv->c.type].no_video) - btv->c.i2c_adap.class &= ~I2C_CLASS_TV_ANALOG; - if (bttv_tvcards[btv->c.type].has_dvb) - btv->c.i2c_adap.class |= I2C_CLASS_TV_DIGITAL; if (btv->use_i2c_hw) { btv->i2c_rc = i2c_add_adapter(&btv->c.i2c_adap); diff --git a/drivers/media/video/bt8xx/bttv.h b/drivers/media/video/bt8xx/bttv.h index fac5f86..3d36daf 100644 --- a/drivers/media/video/bt8xx/bttv.h +++ b/drivers/media/video/bt8xx/bttv.h @@ -240,6 +240,9 @@ struct tvcard { unsigned int no_tda7432:1; unsigned int needs_tvaudio:1; unsigned int msp34xx_alt:1; + /* Note: currently no card definition needs to mark the presence + of a RDS saa6588 chip. If this is ever needed, then add a new + 'has_saa6588' bit here. */ unsigned int no_video:1; /* video pci function is unused */ unsigned int has_dvb:1; @@ -355,7 +358,9 @@ void bttv_gpio_bits(struct bttv_core *core, u32 mask, u32 bits); /* ---------------------------------------------------------- */ /* i2c */ -extern void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg); +#define bttv_call_all(btv, o, f, args...) \ + v4l2_device_call_all(&btv->c.v4l2_dev, 0, o, f, ##args) + extern int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for); extern int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1, unsigned char b2, int both); diff --git a/drivers/media/video/bt8xx/bttvp.h b/drivers/media/video/bt8xx/bttvp.h index 5755b40..9649848 100644 --- a/drivers/media/video/bt8xx/bttvp.h +++ b/drivers/media/video/bt8xx/bttvp.h @@ -329,6 +329,7 @@ struct bttv { unsigned int tuner_type; /* tuner chip type */ unsigned int tda9887_conf; unsigned int svhs, dig; + unsigned int has_saa6588:1; struct bttv_pll_info pll; int triton1; int gpioirq; @@ -352,8 +353,8 @@ struct bttv { int i2c_state, i2c_rc; int i2c_done; wait_queue_head_t i2c_queue; - struct i2c_client *i2c_msp34xx_client; - struct i2c_client *i2c_tvaudio_client; + struct v4l2_subdev *sd_msp34xx; + struct v4l2_subdev *sd_tvaudio; /* video4linux (1) */ struct video_device *video_dev; |