path: root/drivers/media/dvb-frontends/dvb-pll.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * descriptions + helper functions for simple dvb plls.
 *
 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/idr.h>
#include <linux/dvb/frontend.h>
#include <asm/types.h>

#include "dvb-pll.h"

#define dprintk(fmt, arg...) \
	printk(KERN_DEBUG pr_fmt("%s: " fmt), __func__, ##arg)

struct dvb_pll_priv {
	/* pll number */
	int nr;

	/* i2c details */
	int pll_i2c_address;
	struct i2c_adapter *i2c;

	/* the PLL descriptor */
	const struct dvb_pll_desc *pll_desc;

	/* cached frequency/bandwidth */
	u32 frequency;
	u32 bandwidth;
};

#define DVB_PLL_MAX 64
static DEFINE_IDA(pll_ida);

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable verbose debug messages");

static unsigned int id[DVB_PLL_MAX] =
	{ [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };
module_param_array(id, int, NULL, 0644);
MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");

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

struct dvb_pll_desc {
	const char *name;
	u32  min;
	u32  max;
	u32  iffreq;
	void (*set)(struct dvb_frontend *fe, u8 *buf);
	u8   *initdata;
	u8   *initdata2;
	u8   *sleepdata;
	int  count;
	struct {
		u32 limit;
		u32 stepsize;
		u8  config;
		u8  cb;
	} entries[];
};

/* ----------------------------------------------------------- */
/* descriptions                                                */

static const struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
	.name  = "Thomson dtt7579",
	.min   = 177 * MHz,
	.max   = 858 * MHz,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0xb4, 0x03 },
	.count = 4,
	.entries = {
		{  443250000, 166667, 0xb4, 0x02 },
		{  542000000, 166667, 0xb4, 0x08 },
		{  771000000, 166667, 0xbc, 0x08 },
		{  999999999, 166667, 0xf4, 0x08 },
	},
};

static void thomson_dtt759x_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 7000000)
		buf[3] |= 0x10;
}

static const struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
	.name  = "Thomson dtt759x",
	.min   = 177 * MHz,
	.max   = 896 * MHz,
	.set   = thomson_dtt759x_bw,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0x84, 0x03 },
	.count = 5,
	.entries = {
		{  264000000, 166667, 0xb4, 0x02 },
		{  470000000, 166667, 0xbc, 0x02 },
		{  735000000, 166667, 0xbc, 0x08 },
		{  835000000, 166667, 0xf4, 0x08 },
		{  999999999, 166667, 0xfc, 0x08 },
	},
};

static void thomson_dtt7520x_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 8000000)
		buf[3] ^= 0x10;
}

static const struct dvb_pll_desc dvb_pll_thomson_dtt7520x = {
	.name  = "Thomson dtt7520x",
	.min   = 185 * MHz,
	.max   = 900 * MHz,
	.set   = thomson_dtt7520x_bw,
	.iffreq = 36166667,
	.count = 7,
	.entries = {
		{  305000000, 166667, 0xb4, 0x12 },
		{  405000000, 166667, 0xbc, 0x12 },
		{  445000000, 166667, 0xbc, 0x12 },
		{  465000000, 166667, 0xf4, 0x18 },
		{  735000000, 166667, 0xfc, 0x18 },
		{  835000000, 166667, 0xbc, 0x18 },
		{  999999999, 166667, 0xfc, 0x18 },
	},
};

static const struct dvb_pll_desc dvb_pll_lg_z201 = {
	.name  = "LG z201",
	.min   = 174 * MHz,
	.max   = 862 * MHz,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0xbc, 0x03 },
	.count = 5,
	.entries = {
		{  157500000, 166667, 0xbc, 0x01 },
		{  443250000, 166667, 0xbc, 0x02 },
		{  542000000, 166667, 0xbc, 0x04 },
		{  830000000, 166667, 0xf4, 0x04 },
		{  999999999, 166667, 0xfc, 0x04 },
	},
};

static const struct dvb_pll_desc dvb_pll_unknown_1 = {
	.name  = "unknown 1", /* used by dntv live dvb-t */
	.min   = 174 * MHz,
	.max   = 862 * MHz,
	.iffreq= 36166667,
	.count = 9,
	.entries = {
		{  150000000, 166667, 0xb4, 0x01 },
		{  173000000, 166667, 0xbc, 0x01 },
		{  250000000, 166667, 0xb4, 0x02 },
		{  400000000, 166667, 0xbc, 0x02 },
		{  420000000, 166667, 0xf4, 0x02 },
		{  470000000, 166667, 0xfc, 0x02 },
		{  600000000, 166667, 0xbc, 0x08 },
		{  730000000, 166667, 0xf4, 0x08 },
		{  999999999, 166667, 0xfc, 0x08 },
	},
};

/* Infineon TUA6010XS
 * used in Thomson Cable Tuner
 */
static const struct dvb_pll_desc dvb_pll_tua6010xs = {
	.name  = "Infineon TUA6010XS",
	.min   = 44250 * kHz,
	.max   = 858 * MHz,
	.iffreq= 36125000,
	.count = 3,
	.entries = {
		{  115750000, 62500, 0x8e, 0x03 },
		{  403250000,