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V4L/DVB (11278): bttv: convert to v4l2_subdev since i2c autoprobing will disappear.

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Since i2c autoprobing will disappear bttv needs to be converted to use
v4l2_subdev instead.

Without autoprobing the autoload module option has become obsolete. A warning
is generated if it is set, but it is otherwise ignored.

Since the bttv card definitions are of questionable value a new option was
introduced to allow the user to control which audio module is selected:
msp3400, tda7432 or tvaudio (or none at all).

By default bttv will use the card definitions and fallback on tvaudio as the
last resort.

If no audio device was found a warning is printed.

The saa6588 RDS device is now also explicitly probed since it is no longer
possible to autoprobe it. A new saa6588 module option was added to override
the card definition since I suspect more cards have this device than one
would guess from the card definitions.

Note that the probe addresses of the i2c modules are hardcoded in this
driver. Once all v4l drivers are converted to v4l2_subdev this will be
cleaned up. Such data belongs in an i2c driver header.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-03-28 08:29:00 -03:00 committed by Mauro Carvalho Chehab
parent e4129a9cce
commit 859f0277a6
5 changed files with 180 additions and 105 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

179
drivers/media/video/bt8xx/bttv-cards.c
View file

@ -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. */
if (!bttv_tvcards[btv->c.type].no_tda9875 &&
bttv_I2CRead(btv, I2C_ADDR_TDA9875, "TDA9875") >=0)
request_module("tda9875");
switch (audiodev[btv->c.nr]) {
case -1:
return; /* do not load any audio module */
if (!bttv_tvcards[btv->c.type].no_tda7432 &&
bttv_I2CRead(btv, I2C_ADDR_TDA7432, "TDA7432") >=0)
request_module("tda7432");
case 0: /* autodetect */
break;
if (bttv_tvcards[btv->c.type].needs_tvaudio)
request_module("tvaudio");
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;
}
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;
}
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;
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;

41
drivers/media/video/bt8xx/bttv-driver.c
View file

@ -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;
}

53
drivers/media/video/bt8xx/bttv-i2c.c
View file

@ -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);

7
drivers/media/video/bt8xx/bttv.h
View file

@ -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);

5
drivers/media/video/bt8xx/bttvp.h
View file

@ -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;