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提交 92de1f16 编写于 作者: H Hans Verkuil 提交者： Mauro Carvalho Chehab
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V4L/DVB (6555): tuner: reorder functions to prepare for i2c conversion 

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
上级 159ffe77
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Showing with 223 addition and 215 deletion
drivers/media/video/tuner-core.c
浏览文件 @ 92de1f16
......@@ -585,221 +585,6 @@ static void tuner_status(struct dvb_frontend *fe)
/* ---------------------------------------------------------------------- */
LIST_HEAD(tuner_list);
/* Search for existing radio and/or TV tuners on the given I2C adapter.
Note that when this function is called from tuner_attach you can be
certain no other devices will be added/deleted at the same time, I2C
core protects against that. */
static void tuner_lookup(struct i2c_adapter *adap,
struct tuner **radio, struct tuner **tv)
{
struct tuner *pos;
*radio = NULL;
*tv = NULL;
list_for_each_entry(pos, &tuner_list, list) {
int mode_mask;
if (pos->i2c->adapter != adap ||
pos->i2c->driver->id != I2C_DRIVERID_TUNER)
continue;
mode_mask = pos->mode_mask & ~T_STANDBY;
if (*radio == NULL && mode_mask == T_RADIO)
*radio = pos;
/* Note: currently TDA9887 is the only demod-only
device. If other devices appear then we need to
make this test more general. */
else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
(pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV)))
*tv = pos;
}
}
/* During client attach, set_type is called by adapter's attach_inform callback.
set_type must then be completed by tuner_attach.
*/
static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
{
struct i2c_client *client;
struct tuner *t;
struct tuner *radio;
struct tuner *tv;
client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (NULL == client)
return -ENOMEM;
t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
if (NULL == t) {
kfree(client);
return -ENOMEM;
}
t->i2c = client;
client_template.adapter = adap;
client_template.addr = addr;
memcpy(client, &client_template, sizeof(struct i2c_client));
i2c_set_clientdata(client, t);
t->type = UNSET;
t->audmode = V4L2_TUNER_MODE_STEREO;
t->mode_mask = T_UNINITIALIZED;
if (show_i2c) {
unsigned char buffer[16];
int i,rc;
memset(buffer, 0, sizeof(buffer));
rc = i2c_master_recv(client, buffer, sizeof(buffer));
tuner_info("I2C RECV = ");
for (i=0;i<rc;i++)
printk("%02x ",buffer[i]);
printk("\n");
}
/* HACK: This test were added to avoid tuner to probe tda9840 and tea6415c on the MXB card */
if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
return -ENODEV;
/* autodetection code based on the i2c addr */
if (!no_autodetect) {
switch (addr) {
case 0x10:
if (tea5761_autodetection(t->i2c->adapter, t->i2c->addr) != EINVAL) {
t->type = TUNER_TEA5761;
t->mode_mask = T_RADIO;
t->mode = T_STANDBY;
t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv)
tv->mode_mask &= ~T_RADIO;
goto register_client;
}
break;
case 0x42:
case 0x43:
case 0x4a:
case 0x4b:
/* If chip is not tda8290, don't register.
since it can be tda9887*/
if (tda829x_probe(t) == 0) {
tuner_dbg("tda829x detected\n");
} else {
/* Default is being tda9887 */
t->type = TUNER_TDA9887;
t->mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
t->mode = T_STANDBY;
goto register_client;
}
break;
case 0x60:
if (tea5767_autodetection(t->i2c->adapter, t->i2c->addr) != EINVAL) {
t->type = TUNER_TEA5767;
t->mode_mask = T_RADIO;
t->mode = T_STANDBY;
t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv)
tv->mode_mask &= ~T_RADIO;
goto register_client;
}
break;
}
}
/* Initializes only the first TV tuner on this adapter. Why only the
first? Because there are some devices (notably the ones with TI
tuners) that have more than one i2c address for the *same* device.
Experience shows that, except for just one case, the first
address is the right one. The exception is a Russian tuner
(ACORP_Y878F). So, the desired behavior is just to enable the
first found TV tuner. */
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv == NULL) {
t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
if (radio == NULL)
t->mode_mask |= T_RADIO;
tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
t->tv_freq = 400 * 16; /* Sets freq to VHF High */
t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
}
/* Should be just before return */
register_client:
tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
/* Sets a default mode */
if (t->mode_mask & T_ANALOG_TV) {
t->mode = T_ANALOG_TV;
} else if (t->mode_mask & T_RADIO) {
t->mode = T_RADIO;
} else {
t->mode = T_DIGITAL_TV;
}
i2c_attach_client (client);
set_type (client,t->type, t->mode_mask, t->config, t->tuner_callback);
return 0;
}
static int tuner_probe(struct i2c_adapter *adap)
{
if (0 != addr) {
normal_i2c[0] = addr;
normal_i2c[1] = I2C_CLIENT_END;
}
/* HACK: Ignore 0x6b and 0x6f on cx88 boards.
* FusionHDTV5 RT Gold has an ir receiver at 0x6b
* and an RTC at 0x6f which can get corrupted if probed.
*/
if ((adap->id == I2C_HW_B_CX2388x) ||
(adap->id == I2C_HW_B_CX23885)) {
unsigned int i = 0;
while (i < I2C_CLIENT_MAX_OPTS && ignore[i] != I2C_CLIENT_END)
i += 2;
if (i + 4 < I2C_CLIENT_MAX_OPTS) {
ignore[i+0] = adap->nr;
ignore[i+1] = 0x6b;
ignore[i+2] = adap->nr;
ignore[i+3] = 0x6f;
ignore[i+4] = I2C_CLIENT_END;
} else
printk(KERN_WARNING "tuner: "
"too many options specified "
"in i2c probe ignore list!\n");
}
if (adap->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, tuner_attach);
return 0;
}
static int tuner_detach(struct i2c_client *client)
{
struct tuner *t = i2c_get_clientdata(client);
struct analog_tuner_ops *ops = t->fe.ops.analog_demod_ops;
int err;
err = i2c_detach_client(t->i2c);
if (err) {
tuner_warn
("Client deregistration failed, client not detached.\n");
return err;
}
if (ops && ops->release)
ops->release(&t->fe);
list_del(&t->list);
kfree(t);
kfree(client);
return 0;
}
/*
* Switch tuner to other mode. If tuner support both tv and radio,
* set another frequency to some value (This is needed for some pal
......@@ -1156,6 +941,229 @@ static int tuner_resume(struct i2c_client *c)
return 0;
}
/* ---------------------------------------------------------------------- */
LIST_HEAD(tuner_list);
/* Search for existing radio and/or TV tuners on the given I2C adapter.
Note that when this function is called from tuner_attach you can be
certain no other devices will be added/deleted at the same time, I2C
core protects against that. */
static void tuner_lookup(struct i2c_adapter *adap,
struct tuner **radio, struct tuner **tv)
{
struct tuner *pos;
*radio = NULL;
*tv = NULL;
list_for_each_entry(pos, &tuner_list, list) {
int mode_mask;
if (pos->i2c->adapter != adap ||
pos->i2c->driver->id != I2C_DRIVERID_TUNER)
continue;
mode_mask = pos->mode_mask & ~T_STANDBY;
if (*radio == NULL && mode_mask == T_RADIO)
*radio = pos;
/* Note: currently TDA9887 is the only demod-only
device. If other devices appear then we need to
make this test more general. */
else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
(pos->mode_mask & (T_ANALOG_TV | T_DIGITAL_TV)))
*tv = pos;
}
}
/* During client attach, set_type is called by adapter's attach_inform callback.
set_type must then be completed by tuner_attach.
*/
static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
{
struct i2c_client *client;
struct tuner *t;
struct tuner *radio;
struct tuner *tv;
client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (NULL == client)
return -ENOMEM;
t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
if (NULL == t) {
kfree(client);
return -ENOMEM;
}
t->i2c = client;
client_template.adapter = adap;
client_template.addr = addr;
memcpy(client, &client_template, sizeof(struct i2c_client));
i2c_set_clientdata(client, t);
t->type = UNSET;
t->audmode = V4L2_TUNER_MODE_STEREO;
t->mode_mask = T_UNINITIALIZED;
if (show_i2c) {
unsigned char buffer[16];
int i, rc;
memset(buffer, 0, sizeof(buffer));
rc = i2c_master_recv(client, buffer, sizeof(buffer));
tuner_info("I2C RECV = ");
for (i = 0; i < rc; i++)
printk(KERN_CONT "%02x ", buffer[i]);
printk("\n");
}
/* HACK: This test were added to avoid tuner to probe tda9840 and
tea6415c on the MXB card */
if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
return -ENODEV;
/* autodetection code based on the i2c addr */
if (!no_autodetect) {
switch (addr) {
case 0x10:
if (tea5761_autodetection(t->i2c->adapter, t->i2c->addr)
!= EINVAL) {
t->type = TUNER_TEA5761;
t->mode_mask = T_RADIO;
t->mode = T_STANDBY;
/* Sets freq to FM range */
t->radio_freq = 87.5 * 16000;
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv)
tv->mode_mask &= ~T_RADIO;
goto register_client;
}
break;
case 0x42:
case 0x43:
case 0x4a:
case 0x4b:
/* If chip is not tda8290, don't register.
since it can be tda9887*/
if (tda829x_probe(t) == 0) {
tuner_dbg("tda829x detected\n");
} else {
/* Default is being tda9887 */
t->type = TUNER_TDA9887;
t->mode_mask = T_RADIO | T_ANALOG_TV |
T_DIGITAL_TV;
t->mode = T_STANDBY;
goto register_client;
}
break;
case 0x60:
if (tea5767_autodetection(t->i2c->adapter, t->i2c->addr)
!= EINVAL) {
t->type = TUNER_TEA5767;
t->mode_mask = T_RADIO;
t->mode = T_STANDBY;
/* Sets freq to FM range */
t->radio_freq = 87.5 * 16000;
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv)
tv->mode_mask &= ~T_RADIO;
goto register_client;
}
break;
}
}
/* Initializes only the first TV tuner on this adapter. Why only the
first? Because there are some devices (notably the ones with TI
tuners) that have more than one i2c address for the *same* device.
Experience shows that, except for just one case, the first
address is the right one. The exception is a Russian tuner
(ACORP_Y878F). So, the desired behavior is just to enable the
first found TV tuner. */
tuner_lookup(t->i2c->adapter, &radio, &tv);
if (tv == NULL) {
t->mode_mask = T_ANALOG_TV | T_DIGITAL_TV;
if (radio == NULL)
t->mode_mask |= T_RADIO;
tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
t->tv_freq = 400 * 16; /* Sets freq to VHF High */
t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
}
/* Should be just before return */
register_client:
tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
/* Sets a default mode */
if (t->mode_mask & T_ANALOG_TV) {
t->mode = T_ANALOG_TV;
} else if (t->mode_mask & T_RADIO) {
t->mode = T_RADIO;
} else {
t->mode = T_DIGITAL_TV;
}
i2c_attach_client(client);
set_type(client, t->type, t->mode_mask, t->config, t->tuner_callback);
return 0;
}
static int tuner_probe(struct i2c_adapter *adap)
{
if (0 != addr) {
normal_i2c[0] = addr;
normal_i2c[1] = I2C_CLIENT_END;
}
/* HACK: Ignore 0x6b and 0x6f on cx88 boards.
* FusionHDTV5 RT Gold has an ir receiver at 0x6b
* and an RTC at 0x6f which can get corrupted if probed.
*/
if ((adap->id == I2C_HW_B_CX2388x) ||
(adap->id == I2C_HW_B_CX23885)) {
unsigned int i = 0;
while (i < I2C_CLIENT_MAX_OPTS && ignore[i] != I2C_CLIENT_END)
i += 2;
if (i + 4 < I2C_CLIENT_MAX_OPTS) {
ignore[i+0] = adap->nr;
ignore[i+1] = 0x6b;
ignore[i+2] = adap->nr;
ignore[i+3] = 0x6f;
ignore[i+4] = I2C_CLIENT_END;
} else
printk(KERN_WARNING "tuner: "
"too many options specified "
"in i2c probe ignore list!\n");
}
if (adap->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, tuner_attach);
return 0;
}
static int tuner_detach(struct i2c_client *client)
{
struct tuner *t = i2c_get_clientdata(client);
struct analog_tuner_ops *ops = t->fe.ops.analog_demod_ops;
int err;
err = i2c_detach_client(t->i2c);
if (err) {
tuner_warn
("Client deregistration failed, client not detached.\n");
return err;
}
if (ops && ops->release)
ops->release(&t->fe);
list_del(&t->list);
kfree(t);
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver driver = {
......
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