V4L/DVB (6468): tda8290: auto-detect tda8290 or tda8295
Consolidate tda8290_attach() and tda8295_attach() into a single function,
tda829x_attach(), which will detect chip combinations tda8290 or tda8295 with
tda8275, tda8275a or tda18271.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c
index 5975c54..ed22be0 100644
--- a/drivers/media/video/tda8290.c
+++ b/drivers/media/video/tda8290.c
@@ -41,7 +41,13 @@
unsigned char tda8290_easy_mode;
unsigned char tda827x_addr;
- unsigned char tda827x_ver;
+
+ unsigned char ver;
+#define TDA8290 1
+#define TDA8295 2
+#define TDA8275 4
+#define TDA8275A 8
+#define TDA18271 16
struct tda827x_config cfg;
@@ -136,7 +142,7 @@
mode = "xx";
}
- tuner_dbg("setting tda8290 to system %s\n", mode);
+ tuner_dbg("setting tda829x to system %s\n", mode);
}
static void tda8290_set_freq(struct dvb_frontend *fe, unsigned int freq)
@@ -429,7 +435,7 @@
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
tda8290_i2c_bridge(fe, 1);
- if (priv->tda827x_ver != 0)
+ if (priv->ver & TDA8275A)
cb1[1] = 0x90;
i2c_transfer(priv->i2c_props.adap, &msg, 1);
tda8290_i2c_bridge(fe, 0);
@@ -498,7 +504,7 @@
0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
.buf=tda8275_init, .len = 14};
- if (priv->tda827x_ver != 0)
+ if (priv->ver & TDA8275A)
msg.buf = tda8275a_init;
tda8290_i2c_bridge(fe, 1);
@@ -517,6 +523,115 @@
fe->analog_demod_priv = NULL;
}
+static int tda829x_find_tuner(struct dvb_frontend *fe)
+{
+ struct tda8290_priv *priv = fe->analog_demod_priv;
+ struct analog_tuner_ops *ops = fe->ops.analog_demod_ops;
+ struct tuner *t = priv->t;
+ int i, ret, tuners_found;
+ u32 tuner_addrs;
+ u8 data;
+ struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
+
+ if (NULL == ops)
+ return -EINVAL;
+
+ ops->i2c_gate_ctrl(fe, 1);
+
+ /* probe for tuner chip */
+ tuners_found = 0;
+ tuner_addrs = 0;
+ for (i = 0x60; i <= 0x63; i++) {
+ msg.addr = i;
+ ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
+ if (ret == 1) {
+ tuners_found++;
+ tuner_addrs = (tuner_addrs << 8) + i;
+ }
+ }
+ /* if there is more than one tuner, we expect the right one is
+ behind the bridge and we choose the highest address that doesn't
+ give a response now
+ */
+
+ ops->i2c_gate_ctrl(fe, 0);
+
+ if (tuners_found > 1)
+ for (i = 0; i < tuners_found; i++) {
+ msg.addr = tuner_addrs & 0xff;
+ ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
+ if (ret == 1)
+ tuner_addrs = tuner_addrs >> 8;
+ else
+ break;
+ }
+
+ if (tuner_addrs == 0) {
+ tuner_addrs = 0x60;
+ tuner_info("could not clearly identify tuner address, "
+ "defaulting to %x\n", tuner_addrs);
+ } else {
+ tuner_addrs = tuner_addrs & 0xff;
+ tuner_info("setting tuner address to %x\n", tuner_addrs);
+ }
+ priv->tda827x_addr = tuner_addrs;
+ msg.addr = tuner_addrs;
+
+ ops->i2c_gate_ctrl(fe, 1);
+ ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
+
+ if (ret != 1) {
+ tuner_warn("tuner access failed!\n");
+ return -EREMOTEIO;
+ }
+
+ if (data == 0x83) {
+ priv->ver |= TDA18271;
+ tda18271_attach(&t->fe, priv->tda827x_addr,
+ priv->i2c_props.adap);
+ } else {
+ if ((data & 0x3c) == 0)
+ priv->ver |= TDA8275;
+ else
+ priv->ver |= TDA8275A;
+
+ tda827x_attach(&t->fe, priv->tda827x_addr,
+ priv->i2c_props.adap, &priv->cfg);
+
+ /* FIXME: tda827x module doesn't probe the tuner until
+ * tda827x_initial_sleep is called
+ */
+ if (t->fe.ops.tuner_ops.sleep)
+ t->fe.ops.tuner_ops.sleep(&t->fe);
+ }
+ ops->i2c_gate_ctrl(fe, 0);
+
+ switch (priv->ver) {
+ case TDA8290 | TDA8275:
+ strlcpy(t->i2c.name, "tda8290+75", sizeof(t->i2c.name));
+ break;
+ case TDA8295 | TDA8275:
+ strlcpy(t->i2c.name, "tda8295+75", sizeof(t->i2c.name));
+ break;
+ case TDA8290 | TDA8275A:
+ strlcpy(t->i2c.name, "tda8290+75a", sizeof(t->i2c.name));
+ break;
+ case TDA8295 | TDA8275A:
+ strlcpy(t->i2c.name, "tda8295+75a", sizeof(t->i2c.name));
+ break;
+ case TDA8290 | TDA18271:
+ strlcpy(t->i2c.name, "tda8290+18271", sizeof(t->i2c.name));
+ break;
+ case TDA8295 | TDA18271:
+ strlcpy(t->i2c.name, "tda8295+18271", sizeof(t->i2c.name));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static struct analog_tuner_ops tda8290_tuner_ops = {
.set_tv_freq = tda8290_set_freq,
.set_radio_freq = tda8290_set_freq,
@@ -535,18 +650,20 @@
.i2c_gate_ctrl = tda8295_i2c_bridge,
};
-int tda8290_attach(struct tuner *t)
+int tda829x_attach(struct tuner *t)
{
+ struct dvb_frontend *fe = &t->fe;
struct tda8290_priv *priv = NULL;
- u8 data;
- int i, ret, tuners_found;
- u32 tuner_addrs;
- struct i2c_msg msg = {.flags=I2C_M_RD, .buf=&data, .len = 1};
+
+ unsigned char tda8290_id[] = { 0x1f, 0x00 };
+#define TDA8290_ID 0x89
+ unsigned char tda8295_id[] = { 0x2f, 0x00 };
+#define TDA8295_ID 0x8a
priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
- t->fe.analog_demod_priv = priv;
+ fe->analog_demod_priv = priv;
priv->i2c_props.addr = t->i2c.addr;
priv->i2c_props.adap = t->i2c.adapter;
@@ -554,164 +671,38 @@
priv->cfg.tuner_callback = t->tuner_callback;
priv->t = t;
- tda8290_i2c_bridge(&t->fe, 1);
- /* probe for tuner chip */
- tuners_found = 0;
- tuner_addrs = 0;
- for (i=0x60; i<= 0x63; i++) {
- msg.addr = i;
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- if (ret == 1) {
- tuners_found++;
- tuner_addrs = (tuner_addrs << 8) + i;
- }
+ /* detect tda8290 */
+ tuner_i2c_xfer_send(&priv->i2c_props, &tda8290_id[0], 1);
+ tuner_i2c_xfer_recv(&priv->i2c_props, &tda8290_id[1], 1);
+ if (tda8290_id[1] == TDA8290_ID) {
+ priv->ver = TDA8290;
+ fe->ops.analog_demod_ops = &tda8290_tuner_ops;
}
- /* if there is more than one tuner, we expect the right one is
- behind the bridge and we choose the highest address that doesn't
- give a response now
- */
- tda8290_i2c_bridge(&t->fe, 0);
- if(tuners_found > 1)
- for (i = 0; i < tuners_found; i++) {
- msg.addr = tuner_addrs & 0xff;
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- if(ret == 1)
- tuner_addrs = tuner_addrs >> 8;
- else
- break;
- }
- if (tuner_addrs == 0) {
- tuner_addrs = 0x61;
- tuner_info("could not clearly identify tuner address, defaulting to %x\n",
- tuner_addrs);
- } else {
- tuner_addrs = tuner_addrs & 0xff;
- tuner_info("setting tuner address to %x\n", tuner_addrs);
+
+ /* detect tda8295 */
+ tuner_i2c_xfer_send(&priv->i2c_props, &tda8295_id[0], 1);
+ tuner_i2c_xfer_recv(&priv->i2c_props, &tda8295_id[1], 1);
+ if (tda8295_id[1] == TDA8295_ID) {
+ priv->ver = TDA8295;
+ fe->ops.analog_demod_ops = &tda8295_tuner_ops;
}
- priv->tda827x_addr = tuner_addrs;
- msg.addr = tuner_addrs;
- tda8290_i2c_bridge(&t->fe, 1);
+ if (tda829x_find_tuner(fe) < 0)
+ return -EINVAL;
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- if( ret != 1)
- tuner_warn("TDA827x access failed!\n");
-
- if ((data & 0x3c) == 0) {
- strlcpy(t->i2c.name, "tda8290+75", sizeof(t->i2c.name));
- priv->tda827x_ver = 0;
- } else {
- strlcpy(t->i2c.name, "tda8290+75a", sizeof(t->i2c.name));
- priv->tda827x_ver = 2;
- }
- tda827x_attach(&t->fe, priv->tda827x_addr,
- priv->i2c_props.adap, &priv->cfg);
-
- /* FIXME: tda827x module doesn't probe the tuner until
- * tda827x_initial_sleep is called
- */
- if (t->fe.ops.tuner_ops.sleep)
- t->fe.ops.tuner_ops.sleep(&t->fe);
-
- t->fe.ops.analog_demod_ops = &tda8290_tuner_ops;
+ if (priv->ver & TDA8290) {
+ tda8290_init_tuner(fe);
+ tda8290_init_if(fe);
+ } else if (priv->ver & TDA8295)
+ tda8295_init_if(fe);
tuner_info("type set to %s\n", t->i2c.name);
t->mode = V4L2_TUNER_ANALOG_TV;
- tda8290_init_tuner(&t->fe);
- tda8290_init_if(&t->fe);
return 0;
}
-EXPORT_SYMBOL_GPL(tda8290_attach);
-
-int tda8295_attach(struct tuner *t)
-{
- struct tda8290_priv *priv = NULL;
- u8 data;
- int i, ret, tuners_found;
- u32 tuner_addrs;
- struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
-
- priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
- if (priv == NULL)
- return -ENOMEM;
- t->fe.analog_demod_priv = priv;
-
- priv->i2c_props.addr = t->i2c.addr;
- priv->i2c_props.adap = t->i2c.adapter;
- priv->t = t;
-
- tda8295_i2c_bridge(&t->fe, 1);
- /* probe for tuner chip */
- tuners_found = 0;
- tuner_addrs = 0;
- for (i = 0x60; i <= 0x63; i++) {
- msg.addr = i;
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- if (ret == 1) {
- tuners_found++;
- tuner_addrs = (tuner_addrs << 8) + i;
- }
- }
- /* if there is more than one tuner, we expect the right one is
- behind the bridge and we choose the highest address that doesn't
- give a response now
- */
- tda8295_i2c_bridge(&t->fe, 0);
- if (tuners_found > 1)
- for (i = 0; i < tuners_found; i++) {
- msg.addr = tuner_addrs & 0xff;
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- if (ret == 1)
- tuner_addrs = tuner_addrs >> 8;
- else
- break;
- }
- if (tuner_addrs == 0) {
- tuner_addrs = 0x60;
- tuner_info("could not clearly identify tuner address, "
- "defaulting to %x\n", tuner_addrs);
- } else {
- tuner_addrs = tuner_addrs & 0xff;
- tuner_info("setting tuner address to %x\n", tuner_addrs);
- }
- priv->tda827x_addr = tuner_addrs;
- msg.addr = tuner_addrs;
-
- tda8295_i2c_bridge(&t->fe, 1);
- ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
- tda8295_i2c_bridge(&t->fe, 0);
- if (ret != 1)
- tuner_warn("TDA827x access failed!\n");
- if ((data & 0x3c) == 0) {
- strlcpy(t->i2c.name, "tda8295+18271", sizeof(t->i2c.name));
- tda18271_attach(&t->fe, priv->tda827x_addr,
- priv->i2c_props.adap);
- priv->tda827x_ver = 4;
- } else {
- strlcpy(t->i2c.name, "tda8295+75a", sizeof(t->i2c.name));
- tda827x_attach(&t->fe, priv->tda827x_addr,
- priv->i2c_props.adap, &priv->cfg);
-
- /* FIXME: tda827x module doesn't probe the tuner until
- * tda827x_initial_sleep is called
- */
- if (t->fe.ops.tuner_ops.sleep)
- t->fe.ops.tuner_ops.sleep(&t->fe);
- priv->tda827x_ver = 2;
- }
- priv->tda827x_ver |= 1; /* signifies 8295 vs 8290 */
- tuner_info("type set to %s\n", t->i2c.name);
-
- t->fe.ops.analog_demod_ops = &tda8295_tuner_ops;
-
- t->mode = V4L2_TUNER_ANALOG_TV;
-
- tda8295_init_if(&t->fe);
- return 0;
-}
-EXPORT_SYMBOL_GPL(tda8295_attach);
+EXPORT_SYMBOL_GPL(tda829x_attach);
int tda8290_probe(struct tuner *t)
{
@@ -745,7 +736,7 @@
}
EXPORT_SYMBOL_GPL(tda8290_probe);
-MODULE_DESCRIPTION("Philips TDA8290 + TDA8275 / TDA8275a tuner driver");
+MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
MODULE_LICENSE("GPL");