V4L/DVB (6131): tea5761: convert from tuner sub-driver into dvb_frontend module
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Mike Isely <isely@pobox.com> Acked-by: Steven Toth <stoth@hauppauge.com> Acked-by: Patrick Boettcher <pb@linuxtv.org> Acked-by: Jarod Wilson <jwilson@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky
Mauro Carvalho Chehab
parent
96c0b7cfa5
commit
7ab10bf72a
@ -11,15 +11,19 @@
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#include <linux/delay.h>
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#include <linux/videodev.h>
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#include <media/tuner.h>
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#include "tuner-driver.h"
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#include "tuner-i2c.h"
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#include "tea5761.h"
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#define PREFIX "TEA5761 "
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static int debug = 0;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable verbose debug messages");
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/* from tuner-core.c */
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extern int tuner_debug;
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#define PREFIX "tea5761 "
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struct tea5761_priv {
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struct tuner_i2c_props i2c_props;
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u32 frequency;
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};
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/*****************************************************************************/
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@ -118,11 +122,6 @@ struct tea5761_priv {
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/*****************************************************************************/
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static void set_tv_freq(struct tuner *t, unsigned int freq)
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{
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tuner_warn("This tuner doesn't support TV freq.\n");
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}
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#define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
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static void tea5761_status_dump(unsigned char *buffer)
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{
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@ -137,16 +136,18 @@ static void tea5761_status_dump(unsigned char *buffer)
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}
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/* Freq should be specifyed at 62.5 Hz */
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static void set_radio_freq(struct tuner *t, unsigned int frq)
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static int set_radio_freq(struct dvb_frontend *fe,
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struct analog_parameters *params)
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{
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struct tea5761_priv *priv = t->priv;
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struct tea5761_priv *priv = fe->tuner_priv;
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unsigned int frq = params->frequency;
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unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
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unsigned div;
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int rc;
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tuner_dbg (PREFIX "radio freq counter %d\n", frq);
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tuner_dbg("radio freq counter %d\n", frq);
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if (t->mode == T_STANDBY) {
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if (params->mode == T_STANDBY) {
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tuner_dbg("TEA5761 set to standby mode\n");
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buffer[5] |= TEA5761_TNCTRL_MU;
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} else {
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@ -154,10 +155,9 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
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}
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if (t->audmode == V4L2_TUNER_MODE_MONO) {
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if (params->audmode == V4L2_TUNER_MODE_MONO) {
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tuner_dbg("TEA5761 set to mono\n");
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buffer[5] |= TEA5761_TNCTRL_MST;
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;
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} else {
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tuner_dbg("TEA5761 set to stereo\n");
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}
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@ -166,18 +166,22 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
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buffer[1] = (div >> 8) & 0x3f;
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buffer[2] = div & 0xff;
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if (tuner_debug)
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if (debug)
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tea5761_status_dump(buffer);
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if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
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tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
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priv->frequency = frq * 125 / 2;
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return 0;
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}
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static int tea5761_signal(struct tuner *t)
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static int tea5761_signal(struct dvb_frontend *fe)
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{
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unsigned char buffer[16];
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int rc;
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struct tea5761_priv *priv = t->priv;
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struct tea5761_priv *priv = fe->tuner_priv;
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memset(buffer, 0, sizeof(buffer));
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if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16)))
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@ -186,11 +190,11 @@ static int tea5761_signal(struct tuner *t)
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return ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));
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}
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static int tea5761_stereo(struct tuner *t)
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static int tea5761_stereo(struct dvb_frontend *fe)
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{
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unsigned char buffer[16];
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int rc;
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struct tea5761_priv *priv = t->priv;
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struct tea5761_priv *priv = fe->tuner_priv;
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memset(buffer, 0, sizeof(buffer));
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if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16)))
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@ -203,58 +207,96 @@ static int tea5761_stereo(struct tuner *t)
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return (rc ? V4L2_TUNER_SUB_STEREO : 0);
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}
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int tea5761_autodetection(struct tuner *t)
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static int tea5761_get_status(struct dvb_frontend *fe, u32 *status)
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{
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struct tea5761_priv *priv = fe->tuner_priv;
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int signal = tea5761_signal(fe);
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*status = 0;
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if (signal)
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*status = TUNER_STATUS_LOCKED;
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if (tea5761_stereo(fe))
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*status |= TUNER_STATUS_STEREO;
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tuner_dbg("tea5761: Signal strength: %d\n", signal);
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return 0;
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}
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int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
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{
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unsigned char buffer[16];
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int rc;
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struct tuner_i2c_props i2c = { .adap = t->i2c.adapter, .addr = t->i2c.addr };
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struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
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if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
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tuner_warn("it is not a TEA5761. Received %i chars.\n", rc);
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printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
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return EINVAL;
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}
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if (!((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061))) {
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tuner_warn("Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",buffer[13],buffer[14],buffer[15]);
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printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",buffer[13],buffer[14],buffer[15]);
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return EINVAL;
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}
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tuner_warn("TEA5761 detected.\n");
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printk(KERN_WARNING "TEA5761 detected.\n");
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return 0;
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}
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static void tea5761_release(struct tuner *t)
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static int tea5761_release(struct dvb_frontend *fe)
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{
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kfree(t->priv);
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t->priv = NULL;
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kfree(fe->tuner_priv);
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fe->tuner_priv = NULL;
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return 0;
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}
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static struct tuner_operations tea5761_tuner_ops = {
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.set_tv_freq = set_tv_freq,
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.set_radio_freq = set_radio_freq,
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.has_signal = tea5761_signal,
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.is_stereo = tea5761_stereo,
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.release = tea5761_release,
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static int tea5761_get_frequency(struct dvb_frontend *fe, u32 *frequency)
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{
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struct tea5761_priv *priv = fe->tuner_priv;
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*frequency = priv->frequency;
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return 0;
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}
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static struct dvb_tuner_ops tea5761_tuner_ops = {
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.info = {
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.name = "tea5761", // Philips TEA5761HN FM Radio
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},
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.set_analog_params = set_radio_freq,
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.release = tea5761_release,
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.get_frequency = tea5761_get_frequency,
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.get_status = tea5761_get_status,
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};
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int tea5761_tuner_init(struct tuner *t)
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struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
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struct i2c_adapter* i2c_adap,
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u8 i2c_addr)
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{
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struct tea5761_priv *priv = NULL;
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if (tea5761_autodetection(t) == EINVAL)
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return EINVAL;
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if (tea5761_autodetection(i2c_adap, i2c_addr) == EINVAL)
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return NULL;
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priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
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if (priv == NULL)
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return -ENOMEM;
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t->priv = priv;
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return NULL;
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fe->tuner_priv = priv;
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priv->i2c_props.addr = t->i2c.addr;
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priv->i2c_props.adap = t->i2c.adapter;
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priv->i2c_props.addr = i2c_addr;
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priv->i2c_props.adap = i2c_adap;
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tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5761HN FM Radio");
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strlcpy(t->i2c.name, "tea5761", sizeof(t->i2c.name));
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memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
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sizeof(struct dvb_tuner_ops));
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memcpy(&t->ops, &tea5761_tuner_ops, sizeof(struct tuner_operations));
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tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");
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return (0);
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return fe;
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}
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EXPORT_SYMBOL_GPL(tea5761_attach);
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EXPORT_SYMBOL_GPL(tea5761_autodetection);
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MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
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MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
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MODULE_LICENSE("GPL");
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28
drivers/media/video/tea5761.h
Normal file
28
drivers/media/video/tea5761.h
Normal file
@ -0,0 +1,28 @@
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __TEA5761_H__
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#define __TEA5761_H__
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#include <linux/i2c.h>
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#include "dvb_frontend.h"
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extern int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr);
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extern struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
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struct i2c_adapter* i2c_adap,
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u8 i2c_addr);
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#endif /* __TEA5761_H__ */
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@ -21,6 +21,7 @@
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#include "tuner-driver.h"
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#include "mt20xx.h"
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#include "tda8290.h"
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#include "tea5761.h"
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#define UNSET (-1U)
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@ -270,7 +271,7 @@ static void set_type(struct i2c_client *c, unsigned int type,
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break;
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#ifdef CONFIG_TUNER_TEA5761
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case TUNER_TEA5761:
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if (tea5761_tuner_init(t) == EINVAL) {
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if (tea5761_attach(&t->fe, t->i2c.adapter, t->i2c.addr) == NULL) {
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t->type = TUNER_ABSENT;
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t->mode_mask = T_UNINITIALIZED;
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return;
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@ -571,7 +572,7 @@ static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
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switch (addr) {
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#ifdef CONFIG_TUNER_TEA5761
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case 0x10:
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if (tea5761_autodetection(t) != EINVAL) {
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if (tea5761_autodetection(t->i2c.adapter, t->i2c.addr) != EINVAL) {
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t->type = TUNER_TEA5761;
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t->mode_mask = T_RADIO;
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t->mode = T_STANDBY;
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@ -76,9 +76,6 @@ extern int default_tuner_init(struct tuner *t);
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extern int tda9887_tuner_init(struct tuner *t);
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extern int tea5761_tuner_init(struct tuner *t);
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extern int tea5761_autodetection(struct tuner *t);
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extern int tea5767_autodetection(struct tuner *t);
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extern int tea5767_tuner_init(struct tuner *t);
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