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V4L/DVB (6986): tda18271: share state between analog and digital tuner instances

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Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-01-06 15:52:56 -03:00 committed by Mauro Carvalho Chehab
parent b3d98135aa
commit a4f263b587
3 changed files with 81 additions and 24 deletions
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93
drivers/media/dvb/frontends/tda18271-fe.c
View File

@ -27,6 +27,9 @@ module_param_named(debug, tda18271_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debug level "
"(info=1, map=2, reg=4, adv=8 (or-able))");
static LIST_HEAD(tda18271_list);
static DEFINE_MUTEX(tda18271_list_mutex);
/*---------------------------------------------------------------------*/
static int tda18271_ir_cal_init(struct dvb_frontend *fe)
@ -936,8 +939,24 @@ fail:
static int tda18271_release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
struct tda18271_priv *priv = fe->tuner_priv;
mutex_lock(&tda18271_list_mutex);
priv->count--;
if (!priv->count) {
tda_dbg("destroying instance @ %d-%04x\n",
i2c_adapter_id(priv->i2c_adap),
priv->i2c_addr);
list_del(&priv->tda18271_list);
kfree(priv);
}
mutex_unlock(&tda18271_list_mutex);
fe->tuner_priv = NULL;
return 0;
}
@ -1071,43 +1090,73 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
struct tda18271_config *cfg)
{
struct tda18271_priv *priv = NULL;
int state_found = 0;
priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL);
if (priv == NULL)
return NULL;
mutex_lock(&tda18271_list_mutex);
priv->i2c_addr = addr;
priv->i2c_adap = i2c;
priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
priv->cal_initialized = false;
mutex_init(&priv->lock);
list_for_each_entry(priv, &tda18271_list, tda18271_list) {
if ((i2c_adapter_id(priv->i2c_adap) == i2c_adapter_id(i2c)) &&
(priv->i2c_addr == addr)) {
tda_dbg("attaching existing tuner @ %d-%04x\n",
i2c_adapter_id(priv->i2c_adap),
priv->i2c_addr);
priv->count++;
fe->tuner_priv = priv;
state_found = 1;
/* allow dvb driver to override i2c gate setting */
if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
priv->gate = cfg->gate;
break;
}
}
if (state_found == 0) {
tda_dbg("creating new tuner instance @ %d-%04x\n",
i2c_adapter_id(i2c), addr);
fe->tuner_priv = priv;
priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL);
if (priv == NULL) {
mutex_unlock(&tda18271_list_mutex);
return NULL;
}
if (tda18271_get_id(fe) < 0)
goto fail;
priv->i2c_addr = addr;
priv->i2c_adap = i2c;
priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
priv->cal_initialized = false;
mutex_init(&priv->lock);
priv->count++;
if (tda18271_assign_map_layout(fe) < 0)
goto fail;
fe->tuner_priv = priv;
memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
sizeof(struct dvb_tuner_ops));
list_add_tail(&priv->tda18271_list, &tda18271_list);
if (tda18271_get_id(fe) < 0)
goto fail;
if (tda18271_assign_map_layout(fe) < 0)
goto fail;
mutex_lock(&priv->lock);
tda18271_init_regs(fe);
mutex_unlock(&priv->lock);
}
/* override default std map with values in config struct */
if ((cfg) && (cfg->std_map))
tda18271_update_std_map(fe, cfg->std_map);
mutex_unlock(&tda18271_list_mutex);
memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
sizeof(struct dvb_tuner_ops));
if (tda18271_debug & DBG_MAP)
tda18271_dump_std_map(fe);
mutex_lock(&priv->lock);
tda18271_init_regs(fe);
mutex_unlock(&priv->lock);
return fe;
fail:
mutex_unlock(&tda18271_list_mutex);
tda18271_release(fe);
return NULL;
}

3
drivers/media/dvb/frontends/tda18271-priv.h
View File

@ -102,10 +102,13 @@ struct tda18271_priv {
struct i2c_adapter *i2c_adap;
unsigned char tda18271_regs[TDA18271_NUM_REGS];
struct list_head tda18271_list;
enum tda18271_mode mode;
enum tda18271_i2c_gate gate;
enum tda18271_ver id;
unsigned int count;
unsigned int tm_rfcal;
unsigned int cal_initialized:1;

9
drivers/media/video/tda8290.c
View File

@ -502,8 +502,13 @@ static void tda8290_init_tuner(struct dvb_frontend *fe)
static void tda829x_release(struct dvb_frontend *fe)
{
if (fe->ops.tuner_ops.release)
fe->ops.tuner_ops.release(fe);
struct tda8290_priv *priv = fe->analog_demod_priv;
/* dont try to release the tuner
* if we didn't attach it from this module */
if ((priv->ver > TDA8290) && (priv->ver > TDA8295))
if (fe->ops.tuner_ops.release)
fe->ops.tuner_ops.release(fe);
kfree(fe->analog_demod_priv);
fe->analog_demod_priv = NULL;