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path: root/drivers/media/video/tea5761.c
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Diffstat (limited to 'drivers/media/video/tea5761.c')
-rw-r--r--drivers/media/video/tea5761.c132
1 files changed, 87 insertions, 45 deletions
diff --git a/drivers/media/video/tea5761.c b/drivers/media/video/tea5761.c
index 9965ba48cffa..8cdaf474ffdd 100644
--- a/drivers/media/video/tea5761.c
+++ b/drivers/media/video/tea5761.c
@@ -11,15 +11,19 @@
#include <linux/delay.h>
#include <linux/videodev.h>
#include <media/tuner.h>
-#include "tuner-driver.h"
+#include "tuner-i2c.h"
+#include "tea5761.h"
-#define PREFIX "TEA5761 "
+static int debug = 0;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable verbose debug messages");
-/* from tuner-core.c */
-extern int tuner_debug;
+#define PREFIX "tea5761 "
struct tea5761_priv {
struct tuner_i2c_props i2c_props;
+
+ u32 frequency;
};
/*****************************************************************************/
@@ -118,11 +122,6 @@ struct tea5761_priv {
/*****************************************************************************/
-static void set_tv_freq(struct tuner *t, unsigned int freq)
-{
- tuner_warn("This tuner doesn't support TV freq.\n");
-}
-
#define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
static void tea5761_status_dump(unsigned char *buffer)
{
@@ -137,16 +136,18 @@ static void tea5761_status_dump(unsigned char *buffer)
}
/* Freq should be specifyed at 62.5 Hz */
-static void set_radio_freq(struct tuner *t, unsigned int frq)
+static int set_radio_freq(struct dvb_frontend *fe,
+ struct analog_parameters *params)
{
- struct tea5761_priv *priv = t->priv;
+ struct tea5761_priv *priv = fe->tuner_priv;
+ unsigned int frq = params->frequency;
unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
unsigned div;
int rc;
- tuner_dbg (PREFIX "radio freq counter %d\n", frq);
+ tuner_dbg("radio freq counter %d\n", frq);
- if (t->mode == T_STANDBY) {
+ if (params->mode == T_STANDBY) {
tuner_dbg("TEA5761 set to standby mode\n");
buffer[5] |= TEA5761_TNCTRL_MU;
} else {
@@ -154,10 +155,9 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
}
- if (t->audmode == V4L2_TUNER_MODE_MONO) {
+ if (params->audmode == V4L2_TUNER_MODE_MONO) {
tuner_dbg("TEA5761 set to mono\n");
buffer[5] |= TEA5761_TNCTRL_MST;
-;
} else {
tuner_dbg("TEA5761 set to stereo\n");
}
@@ -166,18 +166,22 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
buffer[1] = (div >> 8) & 0x3f;
buffer[2] = div & 0xff;
- if (tuner_debug)
+ if (debug)
tea5761_status_dump(buffer);
if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
+
+ priv->frequency = frq * 125 / 2;
+
+ return 0;
}
-static int tea5761_signal(struct tuner *t)
+static int tea5761_signal(struct dvb_frontend *fe)
{
unsigned char buffer[16];
int rc;
- struct tea5761_priv *priv = t->priv;
+ struct tea5761_priv *priv = fe->tuner_priv;
memset(buffer, 0, sizeof(buffer));
if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16)))
@@ -186,11 +190,11 @@ static int tea5761_signal(struct tuner *t)
return ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));
}
-static int tea5761_stereo(struct tuner *t)
+static int tea5761_stereo(struct dvb_frontend *fe)
{
unsigned char buffer[16];
int rc;
- struct tea5761_priv *priv = t->priv;
+ struct tea5761_priv *priv = fe->tuner_priv;
memset(buffer, 0, sizeof(buffer));
if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16)))
@@ -203,58 +207,96 @@ static int tea5761_stereo(struct tuner *t)
return (rc ? V4L2_TUNER_SUB_STEREO : 0);
}
-int tea5761_autodetection(struct tuner *t)
+static int tea5761_get_status(struct dvb_frontend *fe, u32 *status)
+{
+ struct tea5761_priv *priv = fe->tuner_priv;
+ int signal = tea5761_signal(fe);
+
+ *status = 0;
+
+ if (signal)
+ *status = TUNER_STATUS_LOCKED;
+ if (tea5761_stereo(fe))
+ *status |= TUNER_STATUS_STEREO;
+
+ tuner_dbg("tea5761: Signal strength: %d\n", signal);
+
+ return 0;
+}
+
+int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
{
unsigned char buffer[16];
int rc;
- struct tuner_i2c_props i2c = { .adap = t->i2c.adapter, .addr = t->i2c.addr };
+ struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
- tuner_warn("it is not a TEA5761. Received %i chars.\n", rc);
+ printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
return EINVAL;
}
if (!((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061))) {
- tuner_warn("Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",buffer[13],buffer[14],buffer[15]);
+ printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",buffer[13],buffer[14],buffer[15]);
return EINVAL;
}
- tuner_warn("TEA5761 detected.\n");
+ printk(KERN_WARNING "TEA5761 detected.\n");
+ return 0;
+}
+
+static int tea5761_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+
return 0;
}
-static void tea5761_release(struct tuner *t)
+static int tea5761_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
- kfree(t->priv);
- t->priv = NULL;
+ struct tea5761_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
}
-static struct tuner_operations tea5761_tuner_ops = {
- .set_tv_freq = set_tv_freq,
- .set_radio_freq = set_radio_freq,
- .has_signal = tea5761_signal,
- .is_stereo = tea5761_stereo,
- .release = tea5761_release,
+static struct dvb_tuner_ops tea5761_tuner_ops = {
+ .info = {
+ .name = "tea5761", // Philips TEA5761HN FM Radio
+ },
+ .set_analog_params = set_radio_freq,
+ .release = tea5761_release,
+ .get_frequency = tea5761_get_frequency,
+ .get_status = tea5761_get_status,
};
-int tea5761_tuner_init(struct tuner *t)
+struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
+ struct i2c_adapter* i2c_adap,
+ u8 i2c_addr)
{
struct tea5761_priv *priv = NULL;
- if (tea5761_autodetection(t) == EINVAL)
- return EINVAL;
+ if (tea5761_autodetection(i2c_adap, i2c_addr) == EINVAL)
+ return NULL;
priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
if (priv == NULL)
- return -ENOMEM;
- t->priv = priv;
+ return NULL;
+ fe->tuner_priv = priv;
- priv->i2c_props.addr = t->i2c.addr;
- priv->i2c_props.adap = t->i2c.adapter;
+ priv->i2c_props.addr = i2c_addr;
+ priv->i2c_props.adap = i2c_adap;
- tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5761HN FM Radio");
- strlcpy(t->i2c.name, "tea5761", sizeof(t->i2c.name));
+ memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
- memcpy(&t->ops, &tea5761_tuner_ops, sizeof(struct tuner_operations));
+ tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");
- return (0);
+ return fe;
}
+
+
+EXPORT_SYMBOL_GPL(tea5761_attach);
+EXPORT_SYMBOL_GPL(tea5761_autodetection);
+
+MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 01:23:13 +0100