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android_kernel_xiaomi_sm7250/drivers/media/video/tuner-simple.c
Hans Verkuil 27487d4471 V4L/DVB (3384): Separate tv & radio freqs, fix cb/freq transmit order for tuners that need this. 
- Moved MSP_SET_MATRIX to v4l2-common.h
- Fix typos and integer overflows in tea5767.c
- Split old freq field into a tv_freq and a radio_freq. Prevents
  that a radio tuner is initialized with a tv frequency or vice versa.
- When switching to radio mode initialize the tuner with the last
  used radio frequency (this was already done for the TV mode).
  As a result of these changes the tuner module now remembers the
  last set radio and TV frequencies, which is what you would expect
  to happen.
- Move out of range frequencies to the closest valid frequency as per
  v4l2 API spec.
- Fix incorrect initial radio frequency (multiplier is 16000, not 16)
- Add boundary check for out of range frequencies.
- Use new flag to check if the order of the CB and freq. depends on
  the last set frequency. That is needed for some tuners or you can
  get static as a result. The flag is added for those tuners where I know
  that the datasheet indicates that this is necessary.
- For this new check use the last set div value, not the last frequency
  as radio frequencies are always much higher due to the 16000 multiplier.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-01-15 21:25:32 -02:00

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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>
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
#define TUNER_PARAM_ANALOG 0 /* to be removed */
/* FIXME:
* Right now, all tuners are using the first tuner_params[] array element
* for analog mode. In the future, we will be merging similar tuner
* definitions together, such that each tuner definition will have a
* tuner_params struct for each available video standard. At that point,
* TUNER_PARAM_ANALOG will be removed, and the tuner_params[] array
* element will be chosen based on the video standard in use.
*
*/
/* ---------------------------------------------------------------------- */
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, tuneraddr;
u16 div;
struct tunertype *tun;
u8 buffer[4];
int rc, IFPCoff, i, j;
tun = &tuners[t->type];
j = TUNER_PARAM_ANALOG;
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].cb;
/* i == 0 -> VHF_LO */
/* i == 1 -> VHF_HI */
/* i == 2 -> UHF */
tuner_dbg("tv: range %d\n",i);
/* 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 ??? */
config &= ~0x02;
if (t->std & V4L2_STD_SECAM)
config |= 0x02;
break;
case TUNER_TEMIC_4046FM5:
config &= ~0x0f;
if (t->std & V4L2_STD_PAL_BG) {
config |= TEMIC_SET_PAL_BG;
} else if (t->std & V4L2_STD_PAL_I) {
config |= TEMIC_SET_PAL_I;
} else if (t->std & V4L2_STD_PAL_DK) {
config |= TEMIC_SET_PAL_DK;
} else if (t->std & V4L2_STD_SECAM_L) {
config |= TEMIC_SET_PAL_L;
}
break;
case TUNER_PHILIPS_FQ1216ME:
config &= ~0x0f;
if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
config |= PHILIPS_SET_PAL_BGDK;
} else if (t->std & V4L2_STD_PAL_I) {
config |= PHILIPS_SET_PAL_I;
} else if (t->std & V4L2_STD_SECAM_L) {
config |= 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 */
config &= ~0x03;
if (!(t->std & V4L2_STD_ATSC))
config |= 2;
/* FIXME: input */
break;
case TUNER_MICROTUNE_4042FI5:
/* Set the charge pump for fast tuning */
tun->params[j].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;
config &= ~0x40;
if (t->std & V4L2_STD_ATSC) {
config |= 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;
}
/* 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;
} else if ((t->std & V4L2_STD_MN) &&
!(t->std & ~V4L2_STD_MN)) {
IFPCoff = 732;
} else if (t->std == V4L2_STD_SECAM_LC) {
IFPCoff = 543;
} else {
IFPCoff = 623;
}
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);
if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) {
buffer[0] = tun->params[j].config;
buffer[1] = config;
buffer[2] = (div>>8) & 0x7f;
buffer[3] = div & 0xff;
} else {
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = tun->params[j].config;
buffer[3] = config;
}
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 */
tun->params[j].config &= ~TUNER_CHARGE_PUMP;
buffer[0] = (div>>8) & 0x7f;
buffer[1] = div & 0xff;
buffer[2] = tun->params[j].config;
buffer[3] = config;
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;
tun = &tuners[t->type];
j = TUNER_PARAM_ANALOG;
div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
buffer[2] = (tun->params[j].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:
*/
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