path: root/drivers/media/video/tuner-simple.c

/*
 *
 * 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_MAX_RANGES   3

/* ---------------------------------------------------------------------- */

struct tunertype
{
	char *name;

	int count;
	struct {
		unsigned short thresh;
		unsigned char cb;
	} ranges[TUNER_MAX_RANGES];
	unsigned char config;
};

/*
 *	The floats in the tuner struct are computed at compile time
 *	by gcc and cast back to integers. Thus we don't violate the
 *	"no float in kernel" rule.
 */
static struct tunertype tuners[] = {
	/* 0-9 */
	[TUNER_TEMIC_PAL] = { /* TEMIC PAL */
		.name   = "Temic PAL (4002 FH5)",
		.count  = 3,
		.ranges = {
			{ 16 * 140.25 /*MHz*/, 0x02, },
			{ 16 * 463.25 /*MHz*/, 0x04, },
			{ 16 * 999.99        , 0x01, },
		},
		.config = 0x8e,
	},
	[TUNER_PHILIPS_PAL_I] = { /* Philips PAL_I */
		.name   = "Philips PAL_I (FI1246 and compatibles)",
		.count  = 3,
		.ranges = {
			{ 16 * 140.25 /*MHz*/, 0xa0, },
			{ 16 * 463.25 /*MHz*/, 0x90, },
			{ 16 * 999.99        , 0x30, },
		},
		.config = 0x8e,
	},
	[TUNER_PHILIPS_NTSC] = { /* Philips NTSC */
		.name   = "Philips NTSC (FI1236,FM1236 and compatibles)",
		.count  = 3,
		.ranges = {
			{ 16 * 157.25 /*MHz*/, 0xa0, },
			{ 16 * 451.25 /*MHz*/, 0x90, },
			{ 16 * 999.99        , 0x30, },
		},
		.config = 0x8e,
	},
	[TUNER_PHILIPS_SECAM] = { /* Philips SECAM */
		.name   = "Philips (SECAM+PAL_BG) (FI1216MF, FM1216MF, FR1216MF)",
		.count  = 3,
		.ranges = {
			{ 16 * 168.25 /*MHz*/, 0xa7, },
			{ 16 * 447.25 /*MHz*/, 0x97, },
			{ 16 * 999.99        , 0x37, },
		},
		.config = 0x8e,
	},
	[TUNER_ABSENT] = { /* Tuner Absent */
		.name   = "NoTuner",
		.count  = 1,
		.ranges = {
			{ 0, 0x00, },
		},
		.config = 0x00,
	},
	[TUNER_PHILIPS_PAL] = { /* Philips PAL */
		.name   = "Philips PAL_BG (FI1216 and compatibles)",
		.cou