diff options
Diffstat (limited to 'drivers/media/video/tea5767.c')
-rw-r--r-- | drivers/media/video/tea5767.c | 203 |
1 files changed, 144 insertions, 59 deletions
diff --git a/drivers/media/video/tea5767.c b/drivers/media/video/tea5767.c index d1c41781ccc..71df419df7b 100644 --- a/drivers/media/video/tea5767.c +++ b/drivers/media/video/tea5767.c @@ -11,14 +11,22 @@ */ #include <linux/i2c.h> -#include <linux/videodev.h> #include <linux/delay.h> -#include <media/tuner.h> +#include <linux/videodev.h> +#include "tuner-i2c.h" +#include "tea5767.h" -#define PREFIX "TEA5767 " +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 "tea5767 " + +struct tea5767_priv { + struct tuner_i2c_props i2c_props; + + u32 frequency; +}; /*****************************************************************************/ @@ -129,13 +137,6 @@ enum tea5767_xtal_freq { /*****************************************************************************/ -static void set_tv_freq(struct i2c_client *c, unsigned int freq) -{ - struct tuner *t = i2c_get_clientdata(c); - - tuner_warn("This tuner doesn't support TV freq.\n"); -} - static void tea5767_status_dump(unsigned char *buffer) { unsigned int div, frq; @@ -190,14 +191,16 @@ static void tea5767_status_dump(unsigned char *buffer) } /* Freq should be specifyed at 62.5 Hz */ -static void set_radio_freq(struct i2c_client *c, unsigned int frq) +static int set_radio_freq(struct dvb_frontend *fe, + struct analog_parameters *params) { - struct tuner *t = i2c_get_clientdata(c); + struct tea5767_priv *priv = fe->tuner_priv; + unsigned int frq = params->frequency; unsigned char buffer[5]; unsigned div; int rc; - tuner_dbg (PREFIX "radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000); + tuner_dbg("radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000); /* Rounds freq to next decimal value - for 62.5 KHz step */ /* frq = 20*(frq/16)+radio_frq[frq%16]; */ @@ -207,7 +210,7 @@ static void set_radio_freq(struct i2c_client *c, unsigned int frq) TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND; buffer[4] = 0; - if (t->audmode == V4L2_TUNER_MODE_MONO) { + if (params->audmode == V4L2_TUNER_MODE_MONO) { tuner_dbg("TEA5767 set to mono\n"); buffer[2] |= TEA5767_MONO; } else { @@ -217,26 +220,26 @@ static void set_radio_freq(struct i2c_client *c, unsigned int frq) /* Should be replaced */ switch (TEA5767_HIGH_LO_32768) { case TEA5767_HIGH_LO_13MHz: - tuner_dbg ("TEA5767 radio HIGH LO inject xtal @ 13 MHz\n"); + tuner_dbg("radio HIGH LO inject xtal @ 13 MHz\n"); buffer[2] |= TEA5767_HIGH_LO_INJECT; buffer[4] |= TEA5767_PLLREF_ENABLE; div = (frq * (4000 / 16) + 700000 + 225000 + 25000) / 50000; break; case TEA5767_LOW_LO_13MHz: - tuner_dbg ("TEA5767 radio LOW LO inject xtal @ 13 MHz\n"); + tuner_dbg("radio LOW LO inject xtal @ 13 MHz\n"); buffer[4] |= TEA5767_PLLREF_ENABLE; div = (frq * (4000 / 16) - 700000 - 225000 + 25000) / 50000; break; case TEA5767_LOW_LO_32768: - tuner_dbg ("TEA5767 radio LOW LO inject xtal @ 32,768 MHz\n"); + tuner_dbg("radio LOW LO inject xtal @ 32,768 MHz\n"); buffer[3] |= TEA5767_XTAL_32768; /* const 700=4000*175 Khz - to adjust freq to right value */ div = ((frq * (4000 / 16) - 700000 - 225000) + 16384) >> 15; break; case TEA5767_HIGH_LO_32768: default: - tuner_dbg ("TEA5767 radio HIGH LO inject xtal @ 32,768 MHz\n"); + tuner_dbg("radio HIGH LO inject xtal @ 32,768 MHz\n"); buffer[2] |= TEA5767_HIGH_LO_INJECT; buffer[3] |= TEA5767_XTAL_32768; @@ -246,51 +249,89 @@ static void set_radio_freq(struct i2c_client *c, unsigned int frq) buffer[0] = (div >> 8) & 0x3f; buffer[1] = div & 0xff; - if (5 != (rc = i2c_master_send(c, buffer, 5))) + if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5))) tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); - if (tuner_debug) { - if (5 != (rc = i2c_master_recv(c, buffer, 5))) + if (debug) { + if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5))) tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); else tea5767_status_dump(buffer); } + + priv->frequency = frq * 125 / 2; + + return 0; } -static int tea5767_signal(struct i2c_client *c) +static int tea5767_read_status(struct dvb_frontend *fe, char *buffer) { - unsigned char buffer[5]; + struct tea5767_priv *priv = fe->tuner_priv; int rc; - struct tuner *t = i2c_get_clientdata(c); - memset(buffer, 0, sizeof(buffer)); - if (5 != (rc = i2c_master_recv(c, buffer, 5))) + memset(buffer, 0, 5); + if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5))) { tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); + return -EREMOTEIO; + } - return ((buffer[3] & TEA5767_ADC_LEVEL_MASK) << 8); + return 0; +} + +static inline int tea5767_signal(struct dvb_frontend *fe, const char *buffer) +{ + struct tea5767_priv *priv = fe->tuner_priv; + + int signal = ((buffer[3] & TEA5767_ADC_LEVEL_MASK) << 8); + + tuner_dbg("Signal strength: %d\n", signal); + + return signal; } -static int tea5767_stereo(struct i2c_client *c) +static inline int tea5767_stereo(struct dvb_frontend *fe, const char *buffer) +{ + struct tea5767_priv *priv = fe->tuner_priv; + + int stereo = buffer[2] & TEA5767_STEREO_MASK; + + tuner_dbg("Radio ST GET = %02x\n", stereo); + + return (stereo ? V4L2_TUNER_SUB_STEREO : 0); +} + +static int tea5767_get_status(struct dvb_frontend *fe, u32 *status) { unsigned char buffer[5]; - int rc; - struct tuner *t = i2c_get_clientdata(c); - memset(buffer, 0, sizeof(buffer)); - if (5 != (rc = i2c_master_recv(c, buffer, 5))) - tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); + *status = 0; + + if (0 == tea5767_read_status(fe, buffer)) { + if (tea5767_signal(fe, buffer)) + *status = TUNER_STATUS_LOCKED; + if (tea5767_stereo(fe, buffer)) + *status |= TUNER_STATUS_STEREO; + } + + return 0; +} + +static int tea5767_get_rf_strength(struct dvb_frontend *fe, u16 *strength) +{ + unsigned char buffer[5]; - rc = buffer[2] & TEA5767_STEREO_MASK; + *strength = 0; - tuner_dbg("TEA5767 radio ST GET = %02x\n", rc); + if (0 == tea5767_read_status(fe, buffer)) + *strength = tea5767_signal(fe, buffer); - return ((buffer[2] & TEA5767_STEREO_MASK) ? V4L2_TUNER_SUB_STEREO : 0); + return 0; } -static void tea5767_standby(struct i2c_client *c) +static int tea5767_standby(struct dvb_frontend *fe) { unsigned char buffer[5]; - struct tuner *t = i2c_get_clientdata(c); + struct tea5767_priv *priv = fe->tuner_priv; unsigned div, rc; div = (87500 * 4 + 700 + 225 + 25) / 50; /* Set frequency to 87.5 MHz */ @@ -301,25 +342,27 @@ static void tea5767_standby(struct i2c_client *c) TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND | TEA5767_STDBY; buffer[4] = 0; - if (5 != (rc = i2c_master_send(c, buffer, 5))) + if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5))) tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc); + + return 0; } -int tea5767_autodetection(struct i2c_client *c) +int tea5767_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr) { + struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr }; unsigned char buffer[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; int rc; - struct tuner *t = i2c_get_clientdata(c); - if ((rc = i2c_master_recv(c, buffer, 7))< 5) { - tuner_warn("It is not a TEA5767. Received %i bytes.\n", rc); + if ((rc = tuner_i2c_xfer_recv(&i2c, buffer, 7))< 5) { + printk(KERN_WARNING "It is not a TEA5767. Received %i bytes.\n", rc); return EINVAL; } /* If all bytes are the same then it's a TV tuner and not a tea5767 */ if (buffer[0] == buffer[1] && buffer[0] == buffer[2] && buffer[0] == buffer[3] && buffer[0] == buffer[4]) { - tuner_warn("All bytes are equal. It is not a TEA5767\n"); + printk(KERN_WARNING "All bytes are equal. It is not a TEA5767\n"); return EINVAL; } @@ -329,32 +372,74 @@ int tea5767_autodetection(struct i2c_client *c) * Byte 5: bit 7:0 : == 0 */ if (((buffer[3] & 0x0f) != 0x00) || (buffer[4] != 0x00)) { - tuner_warn("Chip ID is not zero. It is not a TEA5767\n"); + printk(KERN_WARNING "Chip ID is not zero. It is not a TEA5767\n"); return EINVAL; } /* It seems that tea5767 returns 0xff after the 5th byte */ if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) { - tuner_warn("Returned more than 5 bytes. It is not a TEA5767\n"); + printk(KERN_WARNING "Returned more than 5 bytes. It is not a TEA5767\n"); return EINVAL; } - tuner_warn("TEA5767 detected.\n"); + printk(KERN_WARNING "TEA5767 detected.\n"); + return 0; +} + +static int tea5767_release(struct dvb_frontend *fe) +{ + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; + + return 0; +} + +static int tea5767_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct tea5767_priv *priv = fe->tuner_priv; + *frequency = priv->frequency; return 0; } -int tea5767_tuner_init(struct i2c_client *c) +static struct dvb_tuner_ops tea5767_tuner_ops = { + .info = { + .name = "tea5767", // Philips TEA5767HN FM Radio + }, + + .set_analog_params = set_radio_freq, + .sleep = tea5767_standby, + .release = tea5767_release, + .get_frequency = tea5767_get_frequency, + .get_status = tea5767_get_status, + .get_rf_strength = tea5767_get_rf_strength, +}; + +struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe, + struct i2c_adapter* i2c_adap, + u8 i2c_addr) { - struct tuner *t = i2c_get_clientdata(c); + struct tea5767_priv *priv = NULL; + + priv = kzalloc(sizeof(struct tea5767_priv), GFP_KERNEL); + if (priv == NULL) + return NULL; + fe->tuner_priv = priv; + + priv->i2c_props.addr = i2c_addr; + priv->i2c_props.adap = i2c_adap; - tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5767HN FM Radio"); - strlcpy(c->name, "tea5767", sizeof(c->name)); + memcpy(&fe->ops.tuner_ops, &tea5767_tuner_ops, + sizeof(struct dvb_tuner_ops)); - t->set_tv_freq = set_tv_freq; - t->set_radio_freq = set_radio_freq; - t->has_signal = tea5767_signal; - t->is_stereo = tea5767_stereo; - t->standby = tea5767_standby; + tuner_info("type set to %s\n", "Philips TEA5767HN FM Radio"); - return (0); + return fe; } + + +EXPORT_SYMBOL_GPL(tea5767_attach); +EXPORT_SYMBOL_GPL(tea5767_autodetection); + +MODULE_DESCRIPTION("Philips TEA5767 FM tuner driver"); +MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); +MODULE_LICENSE("GPL"); |