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linux/drivers/media/video/tuner-simple.c

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/*
*
* i2c tv tuner chip device driver
* controls all those simple 4-control-bytes style tuners.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <media/tuner.h>
#include <media/v4l2-common.h>
#include <media/tuner-types.h>
#include "tuner-driver.h"
static int offset = 0;
module_param(offset, int, 0664);
MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
/* ---------------------------------------------------------------------- */
/* tv standard selection for Temic 4046 FM5
this value takes the low bits of control byte 2
from datasheet Rev.01, Feb.00
standard BG I L L2 D
picture IF 38.9 38.9 38.9 33.95 38.9
sound 1 33.4 32.9 32.4 40.45 32.4
sound 2 33.16
NICAM 33.05 32.348 33.05 33.05
*/
#define TEMIC_SET_PAL_I 0x05
#define TEMIC_SET_PAL_DK 0x09
#define TEMIC_SET_PAL_L 0x0a // SECAM ?
#define TEMIC_SET_PAL_L2 0x0b // change IF !
#define TEMIC_SET_PAL_BG 0x0c
/* tv tuner system standard selection for Philips FQ1216ME
this value takes the low bits of control byte 2
from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
standard BG DK I L L`
picture carrier 38.90 38.90 38.90 38.90 33.95
colour 34.47 34.47 34.47 34.47 38.38
sound 1 33.40 32.40 32.90 32.40 40.45
sound 2 33.16 - - - -
NICAM 33.05 33.05 32.35 33.05 39.80
*/
#define PHILIPS_SET_PAL_I 0x01 /* Bit 2 always zero !*/
#define PHILIPS_SET_PAL_BGDK 0x09
#define PHILIPS_SET_PAL_L2 0x0a
#define PHILIPS_SET_PAL_L 0x0b
/* system switching for Philips FI1216MF MK2
from datasheet "1996 Jul 09",
standard BG L L'
picture carrier 38.90 38.90 33.95
colour 34.47 34.37 38.38
sound 1 33.40 32.40 40.45
sound 2 33.16 - -
NICAM 33.05 33.05 39.80
*/
#define PHILIPS_MF_SET_STD_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */
#define PHILIPS_MF_SET_STD_L 0x03 /* Used on Secam France */
#define PHILIPS_MF_SET_STD_LC 0x02 /* Used on SECAM L' */
/* Control byte */
#define TUNER_RATIO_MASK 0x06 /* Bit cb1:cb2 */
#define TUNER_RATIO_SELECT_50 0x00
#define TUNER_RATIO_SELECT_32 0x02
#define TUNER_RATIO_SELECT_166 0x04
#define TUNER_RATIO_SELECT_62 0x06
#define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */
/* Status byte */
#define TUNER_POR 0x80
#define TUNER_FL 0x40
#define TUNER_MODE 0x38
#define TUNER_AFC 0x07
#define TUNER_SIGNAL 0x07
#define TUNER_STEREO 0x10
#define TUNER_PLL_LOCKED 0x40
#define TUNER_STEREO_MK3 0x04
struct tuner_simple_priv {
u16 last_div;
struct tuner_i2c_props i2c_props;
};
/* ---------------------------------------------------------------------- */
static int tuner_getstatus(struct tuner *t)
{
struct tuner_simple_priv *priv = t->priv;
unsigned char byte;
if (1 != tuner_i2c_xfer_recv(&priv->i2c_props,&byte,1))
return 0;
return byte;
}
static int tuner_signal(struct tuner *t)
{
return (tuner_getstatus(t) & TUNER_SIGNAL) << 13;
}
static int tuner_stereo(struct tuner *t)
{
int stereo, status;
status = tuner_getstatus(t);
switch (t->type) {
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FM1256_IH3:
case TUNER_LG_NTSC_TAPE:
stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
break;
default:
stereo = status & TUNER_STEREO;
}
return stereo;
}
/* ---------------------------------------------------------------------- */
static void default_set_tv_freq(struct tuner *t, unsigned int freq)
{
struct tuner_simple_priv *priv = t->priv;
u8 config, cb, tuneraddr;
u16 div;
struct tunertype *tun;
u8 buffer[4];
int rc, IFPCoff, i, j;
enum param_type desired_type;
struct tuner_params *params;
tun = &tuners[t->type];
/* IFPCoff = Video Intermediate Frequency - Vif:
940 =16*58.75 NTSC/J (Japan)
732 =16*45.75 M/N STD
704 =16*44 ATSC (at DVB code)
632 =16*39.50 I U.K.
622.4=16*38.90 B/G D/K I, L STD
592 =16*37.00 D China
590 =16.36.875 B Australia
543.2=16*33.95 L' STD
171.2=16*10.70 FM Radio (at set_radio_freq)
*/
if (t->std == V4L2_STD_NTSC_M_JP) {
IFPCoff = 940;
desired_type = TUNER_PARAM_TYPE_NTSC;
} else if ((t->std & V4L2_STD_MN) &&
!(t->std & ~V4L2_STD_MN)) {
IFPCoff = 732;
desired_type = TUNER_PARAM_TYPE_NTSC;
} else if (t->std == V4L2_STD_SECAM_LC) {
IFPCoff = 543;
desired_type = TUNER_PARAM_TYPE_SECAM;
} else {
IFPCoff = 623;
desired_type = TUNER_PARAM_TYPE_PAL;
}
for (j = 0; j < tun->count-1; j++) {
if (desired_type != tun->params[j].type)
continue;
break;
}
/* use default tuner_params if desired_type not available */
if (desired_type != tun->params[j].type) {
tuner_dbg("IFPCoff = %d: tuner_params undefined for tuner %d\n",
IFPCoff,t->type);
j = 0;
}
params = &tun->params[j];
for (i = 0; i < params->count; i++) {
if (freq > params->ranges[i].limit)
continue;
break;
}
if (i == params->count) {
tuner_dbg("TV frequency out of range (%d > %d)",
freq, params->ranges[i - 1].limit);
freq = params->ranges[--i].limit;
}
config = params->ranges[i].config;
cb = params->ranges[i].cb;
/* i == 0 -> VHF_LO
* i == 1 -> VHF_HI
* i == 2 -> UHF */
tuner_dbg("tv: param %d, range %d\n",j,i);
div=freq + IFPCoff + offset;
tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
freq / 16, freq % 16 * 100 / 16,
IFPCoff / 16, IFPCoff % 16 * 100 / 16,
offset / 16, offset % 16 * 100 / 16,
div);
/* tv norm specific stuff for multi-norm tuners */
switch (t->type) {
case TUNER_PHILIPS_SECAM: // FI1216MF
/* 0x01 -> ??? no change ??? */
/* 0x02 -> PAL BDGHI / SECAM L */
/* 0x04 -> ??? PAL others / SECAM others ??? */
cb &= ~0x03;
if (t->std & V4L2_STD_SECAM_L) //also valid for V4L2_STD_SECAM
cb |= PHILIPS_MF_SET_STD_L;
else if (t->std & V4L2_STD_SECAM_LC)
cb |= PHILIPS_MF_SET_STD_LC;
else /* V4L2_STD_B|V4L2_STD_GH */
cb |= PHILIPS_MF_SET_STD_BG;
break;
case TUNER_TEMIC_4046FM5:
cb &= ~0x0f;
if (t->std & V4L2_STD_PAL_BG) {
cb |= TEMIC_SET_PAL_BG;
} else if (t->std & V4L2_STD_PAL_I) {
cb |= TEMIC_SET_PAL_I;
} else if (t->std & V4L2_STD_PAL_DK) {
cb |= TEMIC_SET_PAL_DK;
} else if (t->std & V4L2_STD_SECAM_L) {
cb |= TEMIC_SET_PAL_L;
}
break;
case TUNER_PHILIPS_FQ1216ME:
cb &= ~0x0f;
if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
cb |= PHILIPS_SET_PAL_BGDK;
} else if (t->std & V4L2_STD_PAL_I) {
cb |= PHILIPS_SET_PAL_I;
} else if (t->std & V4L2_STD_SECAM_L) {
cb |= PHILIPS_SET_PAL_L;
}
break;
case TUNER_PHILIPS_ATSC:
/* 0x00 -> ATSC antenna input 1 */
/* 0x01 -> ATSC antenna input 2 */
/* 0x02 -> NTSC antenna input 1 */
/* 0x03 -> NTSC antenna input 2 */
cb &= ~0x03;
if (!(t->std & V4L2_STD_ATSC))
cb |= 2;
/* FIXME: input */
break;
case TUNER_MICROTUNE_4042FI5:
/* Set the charge pump for fast tuning */
config |= TUNER_CHARGE_PUMP;
break;
case TUNER_PHILIPS_TUV1236D:
/* 0x40 -> ATSC antenna input 1 */
/* 0x48 -> ATSC antenna input 2 */
/* 0x00 -> NTSC antenna input 1 */
/* 0x08 -> NTSC antenna input 2 */
buffer[0] = 0x14;
buffer[1] = 0x00;
buffer[2] = 0x17;
buffer[3] = 0x00;
cb &= ~0x40;
if (t->std & V4L2_STD_ATSC) {
cb |= 0x40;
buffer[1] = 0x04;
}
/* set to the correct mode (analog or digital) */
tuneraddr = priv->i2c_props.addr;
priv->i2c_props.addr = 0x0a;
if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[0],2)))
tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[2],2)))
tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
priv->i2c_props.addr = tuneraddr;
/* FIXME: input */
break;
}
if (params->cb_first_if_lower_freq && div < priv->last_div) {
buffer[0] = config;
buffer[1] = cb;
buffer[2] = (div>>8) & 0x7f;
buffer[3] = div & 0xff;
} else {
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = config;
buffer[3] = cb;
}
priv->last_div = div;
if (params->has_tda9887) {
int config = 0;
int is_secam_l = (t->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
!(t->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
if (t->std == V4L2_STD_SECAM_LC) {
if (params->port1_active ^ params->port1_invert_for_secam_lc)
config |= TDA9887_PORT1_ACTIVE;
if (params->port2_active ^ params->port2_invert_for_secam_lc)
config |= TDA9887_PORT2_ACTIVE;
}
else {
if (params->port1_active)
config |= TDA9887_PORT1_ACTIVE;
if (params->port2_active)
config |= TDA9887_PORT2_ACTIVE;
}
if (params->intercarrier_mode)
config |= TDA9887_INTERCARRIER;
if (is_secam_l) {
if (i == 0 && params->default_top_secam_low)
config |= TDA9887_TOP(params->default_top_secam_low);
else if (i == 1 && params->default_top_secam_mid)
config |= TDA9887_TOP(params->default_top_secam_mid);
else if (params->default_top_secam_high)
config |= TDA9887_TOP(params->default_top_secam_high);
}
else {
if (i == 0 && params->default_top_low)
config |= TDA9887_TOP(params->default_top_low);
else if (i == 1 && params->default_top_mid)
config |= TDA9887_TOP(params->default_top_mid);
else if (params->default_top_high)
config |= TDA9887_TOP(params->default_top_high);
}
if (params->default_pll_gating_18)
config |= TDA9887_GATING_18;
i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
}
tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
switch (t->type) {
case TUNER_LG_TDVS_H06XF:
/* Set the Auxiliary Byte. */
buffer[0] = buffer[2];
buffer[0] &= ~0x20;
buffer[0] |= 0x18;
buffer[1] = 0x20;
tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,2)))
tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
break;
case TUNER_MICROTUNE_4042FI5:
{
// FIXME - this may also work for other tuners
unsigned long timeout = jiffies + msecs_to_jiffies(1);
u8 status_byte = 0;
/* Wait until the PLL locks */
for (;;) {
if (time_after(jiffies,timeout))
return;
if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,&status_byte,1))) {
tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
break;
}
if (status_byte & TUNER_PLL_LOCKED)
break;
udelay(10);
}
/* Set the charge pump for optimized phase noise figure */
config &= ~TUNER_CHARGE_PUMP;
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = config;
buffer[3] = cb;
tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
break;
}
}
}
static void default_set_radio_freq(struct tuner *t, unsigned int freq)
{
struct tunertype *tun;
struct tuner_simple_priv *priv = t->priv;
u8 buffer[4];
u16 div;
int rc, j;
struct tuner_params *params;
tun = &tuners[t->type];
for (j = tun->count-1; j > 0; j--)
if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
break;
/* default params (j=0) will be used if desired type wasn't found */
params = &tun->params[j];
/* Select Radio 1st IF used */
switch (params->radio_if) {
case 0: /* 10.7 MHz */
freq += (unsigned int)(10.7*16000);
break;
case 1: /* 33.3 MHz */
freq += (unsigned int)(33.3*16000);
break;
case 2: /* 41.3 MHz */
freq += (unsigned int)(41.3*16000);
break;
default:
tuner_warn("Unsupported radio_if value %d\n", params->radio_if);
return;
}
/* Bandswitch byte */
switch (t->type) {
case TUNER_TENA_9533_DI:
case TUNER_YMEC_TVF_5533MF:
tuner_dbg ("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
return;
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FMD1216ME_MK3:
case TUNER_LG_NTSC_TAPE:
case TUNER_PHILIPS_FM1256_IH3:
buffer[3] = 0x19;
break;
case TUNER_TNF_5335MF:
buffer[3] = 0x11;
break;
case TUNER_LG_PAL_FM:
buffer[3] = 0xa5;
break;
case TUNER_THOMSON_DTT761X:
buffer[3] = 0x39;
break;
case TUNER_MICROTUNE_4049FM5:
default:
buffer[3] = 0xa4;
break;
}
buffer[2] = (params->ranges[0].config & ~TUNER_RATIO_MASK) |
TUNER_RATIO_SELECT_50; /* 50 kHz step */
/* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
freq * (1/800) */
div = (freq + 400) / 800;
if (params->cb_first_if_lower_freq && div < priv->last_div) {
buffer[0] = buffer[2];
buffer[1] = buffer[3];
buffer[2] = (div>>8) & 0x7f;
buffer[3] = div & 0xff;
} else {
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
}
tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
priv->last_div = div;
if (params->has_tda9887) {
int config = 0;
if (params->port1_active && !params->port1_fm_high_sensitivity)
config |= TDA9887_PORT1_ACTIVE;
if (params->port2_active && !params->port2_fm_high_sensitivity)
config |= TDA9887_PORT2_ACTIVE;
if (params->intercarrier_mode)
config |= TDA9887_INTERCARRIER;
/* if (params->port1_set_for_fm_mono)
config &= ~TDA9887_PORT1_ACTIVE;*/
if (params->fm_gain_normal)
config |= TDA9887_GAIN_NORMAL;
if (params->radio_if == 2)
config |= TDA9887_RIF_41_3;
i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
}
if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
}
static void tuner_release(struct tuner *t)
{
kfree(t->priv);
t->priv = NULL;
}
static struct tuner_operations simple_tuner_ops = {
.set_tv_freq = default_set_tv_freq,
.set_radio_freq = default_set_radio_freq,
.has_signal = tuner_signal,
.is_stereo = tuner_stereo,
.release = tuner_release,
};
int default_tuner_init(struct tuner *t)
{
struct tuner_simple_priv *priv = NULL;
priv = kzalloc(sizeof(struct tuner_simple_priv), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
t->priv = priv;
priv->i2c_props.addr = t->i2c.addr;
priv->i2c_props.adap = t->i2c.adapter;
tuner_info("type set to %d (%s)\n",
t->type, tuners[t->type].name);
strlcpy(t->i2c.name, tuners[t->type].name, sizeof(t->i2c.name));
memcpy(&t->ops, &simple_tuner_ops, sizeof(struct tuner_operations));
return 0;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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