/*
*
* 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>
static int offset = 0;
module_param(offset, int, 0666);
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_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */
#define PHILIPS_MF_SET_PAL_L 0x03 // France
#define PHILIPS_MF_SET_PAL_L2 0x02 // 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
/* ---------------------------------------------------------------------- */
static int tuner_getstatus(struct i2c_client *c)
{
unsigned char byte;
if (1 != i2c_master_recv(c,&byte,1))
return 0;
return byte;
}
static int tuner_signal(struct i2c_client *c)
{
return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
}
static int tuner_stereo(struct i2c_client *c)
{
int stereo, status;
struct tuner *t = i2c_get_clientdata(c);
status = tuner_getstatus (c);
switch (t->type) {
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FM1256_IH3:
stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
break;
default:
stereo = status & TUNER_STEREO;
}
return stereo;
}
/* ---------------------------------------------------------------------- */
static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
u8 config, cb, tuneraddr;
u16 div;
struct tunertype *tun;
u8 buffer[4];
int rc, IFPCoff, i, j;
enum param_type desired_type;
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;
}
for (i = 0; i < tun->params[j].count; i++) {
if (freq > tun->params[j].ranges[i].limit)
continue;
break;
}
if (i == tun->params[j].count) {
tuner_dbg("TV frequency out of range (%d > %d)",
freq, tun->params[j].ranges[i - 1].limit);
freq = tun->params[j].ranges[--i].limit;
}
config = tun->params[j].ranges[i].config;
cb = tun->params[j].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 &= ~0x02;
if (t->std & V4L2_STD_SECAM)
cb |= 0x02;
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 = c->addr;
c->addr = 0x0a;
if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
c->addr = tuneraddr;
/* FIXME: input */
break;
}
if (tuners[t->type].params->cb_first_if_lower_freq && div < t->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;
}
t->last_div = div;
tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
buffer[0],buffer[1],buffer[2],buffer[3]);
if (4 != (rc = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
if (t->type == 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 = i2c_master_recv(c,&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 = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
}
}
static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
{
struct tunertype *tun;
struct tuner *t = i2c_get_clientdata(c);
u8 buffer[4];
u16 div;
int rc, j;
enum param_type desired_type = TUNER_PARAM_TYPE_RADIO;
tun = &tuners[t->type];
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)
j = 0;
div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
buffer[2] = (tun->params[j].ranges[0].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
switch (t->type) {
case TUNER_TENA_9533_DI:
case TUNER_YMEC_TVF_5533MF:
tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
return;
case TUNER_PHILIPS_FM1216ME_MK3:
case TUNER_PHILIPS_FM1236_MK3:
case TUNER_PHILIPS_FMD1216ME_MK3:
buffer[3] = 0x19;
break;
case TUNER_PHILIPS_FM1256_IH3:
div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
buffer[3] = 0x19;
break;
case TUNER_LG_PAL_FM:
buffer[3] = 0xa5;
break;
case TUNER_MICROTUNE_4049FM5:
div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
buffer[3] = 0xa4;
break;
default:
buffer[3] = 0xa4;
break;
}
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
if (tuners[t->type].params->cb_first_if_lower_freq && div < t->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]);
t->last_div = div;
if (4 != (rc = i2c_master_send(c,buffer,4)))
tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
}
int default_tuner_init(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
tuner_info("type set to %d (%s)\n",
t->type, tuners[t->type].name);
strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
t->set_tv_freq = default_set_tv_freq;
t->set_radio_freq = default_set_radio_freq;
t->has_signal = tuner_signal;
t->is_stereo = tuner_stereo;
t->standby = NULL;
return 0;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
