[linux-2.6-block.git] / drivers / media / tuners / tea5761.c

/*
 * For Philips TEA5761 FM Chip
 * I2C address is allways 0x20 (0x10 at 7-bit mode).
 *
 * Copyright (c) 2005-2007 Mauro Carvalho Chehab (mchehab@infradead.org)
 * This code is placed under the terms of the GNUv2 General Public License
 *
 */

#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <media/tuner.h>
#include "tuner-i2c.h"
#include "tea5761.h"

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

struct tea5761_priv {
	struct tuner_i2c_props i2c_props;

	u32 frequency;
	bool standby;
};

/*****************************************************************************/

/***************************
 * TEA5761HN I2C registers *
 ***************************/

/* INTREG - Read: bytes 0 and 1 / Write: byte 0 */

	/* first byte for reading */
#define TEA5761_INTREG_IFFLAG		0x10
#define TEA5761_INTREG_LEVFLAG		0x8
#define TEA5761_INTREG_FRRFLAG		0x2
#define TEA5761_INTREG_BLFLAG		0x1

	/* second byte for reading / byte for writing */
#define TEA5761_INTREG_IFMSK		0x10
#define TEA5761_INTREG_LEVMSK		0x8
#define TEA5761_INTREG_FRMSK		0x2
#define TEA5761_INTREG_BLMSK		0x1

/* FRQSET - Read: bytes 2 and 3 / Write: byte 1 and 2 */

	/* First byte */
#define TEA5761_FRQSET_SEARCH_UP 0x80		/* 1=Station search from botton to up */
#define TEA5761_FRQSET_SEARCH_MODE 0x40		/* 1=Search mode */

	/* Bits 0-5 for divider MSB */

	/* Second byte */
	/* Bits 0-7 for divider LSB */

/* TNCTRL - Read: bytes 4 and 5 / Write: Bytes 3 and 4 */

	/* first byte */

#define TEA5761_TNCTRL_PUPD_0	0x40	/* Power UP/Power Down MSB */
#define TEA5761_TNCTRL_BLIM	0X20	/* 1= Japan Frequencies, 0= European frequencies */
#define TEA5761_TNCTRL_SWPM	0x10	/* 1= software port is FRRFLAG */
#define TEA5761_TNCTRL_IFCTC	0x08	/* 1= IF count time 15.02 ms, 0= IF count time 2.02 ms */
#define TEA5761_TNCTRL_AFM	0x04
#define TEA5761_TNCTRL_SMUTE	0x02	/* 1= Soft mute */
#define TEA5761_TNCTRL_SNC	0x01

	/* second byte */

#define TEA5761_TNCTRL_MU	0x80	/* 1=Hard mute */
#define TEA5761_TNCTRL_SSL_1	0x40
#define TEA5761_TNCTRL_SSL_0	0x20
#define TEA5761_TNCTRL_HLSI	0x10
#define TEA5761_TNCTRL_MST	0x08	/* 1 = mono */
#define TEA5761_TNCTRL_SWP	0x04
#define TEA5761_TNCTRL_DTC	0x02	/* 1 = deemphasis 50 us, 0 = deemphasis 75 us */
#define TEA5761_TNCTRL_AHLSI	0x01

/* FRQCHECK - Read: bytes 6 and 7  */
	/* First byte */

	/* Bits 0-5 for divider MSB */

	/* Second byte */
	/* Bits 0-7 for divider LSB */

/* TUNCHECK - Read: bytes 8 and 9  */

	/* First byte */
#define TEA5761_TUNCHECK_IF_MASK	0x7e	/* IF count */
#define TEA5761_TUNCHECK_TUNTO		0x01

	/* Second byte */
#define TEA5761_TUNCHECK_LEV_MASK	0xf0	/* Level Count */
#define TEA5761_TUNCHECK_LD		0x08
#define TEA5761_TUNCHECK_STEREO		0x04

/* TESTREG - Read: bytes 10 and 11 / Write: bytes 5 and 6 */

	/* All zero = no test mode */

/* MANID - Read: bytes 12 and 13 */

	/* First byte - should be 0x10 */
#define TEA5767_MANID_VERSION_MASK	0xf0	/* Version = 1 */
#define TEA5767_MANID_ID_MSB_MASK	0x0f	/* Manufacurer ID - should be 0 */

	/* Second byte - Should be 0x2b */

#define TEA5767_MANID_ID_LSB_MASK	0xfe	/* Manufacturer ID - should be 0x15 */
#define TEA5767_MANID_IDAV		0x01	/* 1 = Chip has ID, 0 = Chip has no ID */

/* Chip ID - Read: bytes 14 and 15 */

	/* First byte - should be 0x57 */

	/* Second byte - should be 0x61 */

/*****************************************************************************/

#define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
static void tea5761_status_dump(unsigned char *buffer)
{
	unsigned int div, frq;

	div = ((buffer[2] & 0x3f) << 8) | buffer[3];

	frq = 1000 * (div * 32768 / 1000 + FREQ_OFFSET + 225) / 4;	/* Freq in KHz */

	printk(KERN_INFO "tea5761: Frequency %d.%03d KHz (divider = 0x%04x)\n",
	       frq / 1000, frq % 1000, div);
}

/* Freq should be specifyed at 62.5 Hz */
static int __set_radio_freq(struct dvb_frontend *fe,
			    unsigned int freq,
			    bool mono)
{
	struct tea5761_priv *priv = fe->tuner_priv;
	unsigned int frq = freq;
	unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
	unsigned div;
	int rc;

	tuner_dbg("radio freq counter %d\n", frq);

	if (priv->standby) {
		tuner_dbg("TEA5761 set to standby mode\n");
		buffer[5] |= TEA5761_TNCTRL_MU;
	} else {
		buffer[4] |= TEA5761_TNCTRL_PUPD_0;
	}


	if (mono) {
		tuner_dbg("TEA5761 set to mono\n");
		buffer[5] |= TEA5761_TNCTRL_MST;
	} else {
		tuner_dbg("TEA5761 set to stereo\n");
	}

	div = (1000 * (frq * 4 / 16 + 700 + 225) ) >> 15;
	buffer[1] = (div >> 8) & 0x3f;
	buffer[2] = div & 0xff;

	if (debug)
		tea5761_status_dump(buffer);

	if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
		tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);

	priv->frequency = frq * 125 / 2;

	return 0;
}

static int set_radio_freq(struct dvb_frontend *fe,
			  struct analog_parameters *params)
{
	struct tea5761_priv *priv = fe->analog_demod_priv;

	priv->standby = false;

	return __set_radio_freq(fe, params->frequency,
				params->audmode == V4L2_TUNER_MODE_MONO);
}

static int set_radio_sleep(struct dvb_frontend *fe)
{
	struct tea5761_priv *priv = fe->analog_demod_priv;

	priv->standby = true;

	return __set_radio_freq(fe, priv->frequency, false);
}

static int tea5761_read_status(struct dvb_frontend *fe, char *buffer)
{
	struct tea5761_priv *priv = fe->tuner_priv;
	int rc;

	memset(buffer, 0, 16);
	if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16))) {
		tuner_warn("i2c i/o error: rc == %d (should be 16)\n", rc);
		return -EREMOTEIO;
	}

	return 0;
}

static inline int tea5761_signal(struct dvb_frontend *fe, const char *buffer)
{
	struct tea5761_priv *priv = fe->tuner_priv;

	int signal = ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));

	tuner_dbg("Signal strength: %d\n", signal);

	return signal;
}

static inline int tea5761_stereo(struct dvb_frontend *fe, const char *buffer)
{
	struct tea5761_priv *priv = fe->tuner_priv;

	int stereo = buffer[9] & TEA5761_TUNCHECK_STEREO;

	tuner_dbg("Radio ST GET = %02x\n", stereo);

	return (stereo ? V4L2_TUNER_SUB_STEREO : 0);
}

static int tea5761_get_status(struct dvb_frontend *fe, u32 *status)
{
	unsigned char buffer[16];

	*status = 0;

	if (0 == tea5761_read_status(fe, buffer)) {
		if (tea5761_signal(fe, buffer))
			*status = TUNER_STATUS_LOCKED;
		if (tea5761_stereo(fe, buffer))
			*status |= TUNER_STATUS_STEREO;
	}

	return 0;
}

static int tea5761_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
{
	unsigned char buffer[16];

	*strength = 0;

	if (0 == tea5761_read_status(fe, buffer))
		*strength = tea5761_signal(fe, buffer);

	return 0;
}

int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
{
	unsigned char buffer[16];
	int rc;
	struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };

	if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
		printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
		return -EINVAL;
	}

	if ((buffer[13] != 0x2b) || (buffer[14] != 0x57) || (buffer[15] != 0x061)) {
		printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x."
				    " It is not a TEA5761\n",
				    buffer[13], buffer[14], buffer[15]);
		return -EINVAL;
	}
	printk(KERN_WARNING "tea5761: TEA%02x%02x detected. "
			    "Manufacturer ID= 0x%02x\n",
			    buffer[14], buffer[15], buffer[13]);

	return 0;
}

static int tea5761_release(struct dvb_frontend *fe)
{
	kfree(fe->tuner_priv);
	fe->tuner_priv = NULL;

	return 0;
}

static int tea5761_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct tea5761_priv *priv = fe->tuner_priv;
	*frequency = priv->frequency;
	return 0;
}

static struct dvb_tuner_ops tea5761_tuner_ops = {
	.info = {
		.name           = "tea5761", // Philips TEA5761HN FM Radio
	},
	.set_analog_params = set_radio_freq,
	.sleep		   = set_radio_sleep,
	.release           = tea5761_release,
	.get_frequency     = tea5761_get_frequency,
	.get_status        = tea5761_get_status,
	.get_rf_strength   = tea5761_get_rf_strength,
};

struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
				    struct i2c_adapter* i2c_adap,
				    u8 i2c_addr)
{
	struct tea5761_priv *priv = NULL;

	if (tea5761_autodetection(i2c_adap, i2c_addr) != 0)
		return NULL;

	priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
	if (priv == NULL)
		return NULL;
	fe->tuner_priv = priv;

	priv->i2c_props.addr = i2c_addr;
	priv->i2c_props.adap = i2c_adap;
	priv->i2c_props.name = "tea5761";

	memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
	       sizeof(struct dvb_tuner_ops));

	tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");

	return fe;
}


EXPORT_SYMBOL_GPL(tea5761_attach);
EXPORT_SYMBOL_GPL(tea5761_autodetection);

MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
Commit	Line	Data
8573a9e6 MCC	1	/*
	2	* For Philips TEA5761 FM Chip
	3	* I2C address is allways 0x20 (0x10 at 7-bit mode).
	4	*
	5	* Copyright (c) 2005-2007 Mauro Carvalho Chehab (mchehab@infradead.org)
	6	* This code is placed under the terms of the GNUv2 General Public License
	7	*
	8	*/
	9
	10	#include <linux/i2c.h>
5a0e3ad6	11	#include <linux/slab.h>
8573a9e6	12	#include <linux/delay.h>
7f6adeaf	13	#include <linux/videodev2.h>
8573a9e6	14	#include <media/tuner.h>
7ab10bf7 MK	15	#include "tuner-i2c.h"
7ab10bf7 MK	16	#include "tea5761.h"
8573a9e6	17
ff699e6b	18	static int debug;
7ab10bf7 MK	19	module_param(debug, int, 0644);
7ab10bf7 MK	20	MODULE_PARM_DESC(debug, "enable verbose debug messages");
8573a9e6	21
db8a6956 MK	22	struct tea5761_priv {
db8a6956 MK	23	struct tuner_i2c_props i2c_props;
7ab10bf7 MK	24
7ab10bf7 MK	25	u32 frequency;
2d351df4	26	bool standby;
db8a6956 MK	27	};
db8a6956 MK	28
8573a9e6 MCC	29	/*****************************************************************************/
	30
	31	/***************************
	32	* TEA5761HN I2C registers *
	33	***************************/
	34
	35	/* INTREG - Read: bytes 0 and 1 / Write: byte 0 */
	36
	37	/* first byte for reading */
	38	#define TEA5761_INTREG_IFFLAG 0x10
	39	#define TEA5761_INTREG_LEVFLAG 0x8
	40	#define TEA5761_INTREG_FRRFLAG 0x2
	41	#define TEA5761_INTREG_BLFLAG 0x1
	42
	43	/* second byte for reading / byte for writing */
	44	#define TEA5761_INTREG_IFMSK 0x10
	45	#define TEA5761_INTREG_LEVMSK 0x8
	46	#define TEA5761_INTREG_FRMSK 0x2
	47	#define TEA5761_INTREG_BLMSK 0x1
	48
	49	/* FRQSET - Read: bytes 2 and 3 / Write: byte 1 and 2 */
	50
	51	/* First byte */
	52	#define TEA5761_FRQSET_SEARCH_UP 0x80 /* 1=Station search from botton to up */
	53	#define TEA5761_FRQSET_SEARCH_MODE 0x40 /* 1=Search mode */
	54
	55	/* Bits 0-5 for divider MSB */
	56
	57	/* Second byte */
	58	/* Bits 0-7 for divider LSB */
	59
	60	/* TNCTRL - Read: bytes 4 and 5 / Write: Bytes 3 and 4 */
	61
	62	/* first byte */
	63
	64	#define TEA5761_TNCTRL_PUPD_0 0x40 /* Power UP/Power Down MSB */
	65	#define TEA5761_TNCTRL_BLIM 0X20 /* 1= Japan Frequencies, 0= European frequencies */
	66	#define TEA5761_TNCTRL_SWPM 0x10 /* 1= software port is FRRFLAG */
	67	#define TEA5761_TNCTRL_IFCTC 0x08 /* 1= IF count time 15.02 ms, 0= IF count time 2.02 ms */
	68	#define TEA5761_TNCTRL_AFM 0x04
	69	#define TEA5761_TNCTRL_SMUTE 0x02 /* 1= Soft mute */
	70	#define TEA5761_TNCTRL_SNC 0x01
	71
	72	/* second byte */
	73
	74	#define TEA5761_TNCTRL_MU 0x80 /* 1=Hard mute */
	75	#define TEA5761_TNCTRL_SSL_1 0x40
	76	#define TEA5761_TNCTRL_SSL_0 0x20
	77	#define TEA5761_TNCTRL_HLSI 0x10
	78	#define TEA5761_TNCTRL_MST 0x08 /* 1 = mono */
	79	#define TEA5761_TNCTRL_SWP 0x04
	80	#define TEA5761_TNCTRL_DTC 0x02 /* 1 = deemphasis 50 us, 0 = deemphasis 75 us */
	81	#define TEA5761_TNCTRL_AHLSI 0x01
	82
	83	/* FRQCHECK - Read: bytes 6 and 7 */
	84	/* First byte */
	85
	86	/* Bits 0-5 for divider MSB */
	87
	88	/* Second byte */
	89	/* Bits 0-7 for divider LSB */
	90
	91	/* TUNCHECK - Read: bytes 8 and 9 */
	92
93	/* First byte */
94	#define TEA5761_TUNCHECK_IF_MASK 0x7e /* IF count */
95	#define TEA5761_TUNCHECK_TUNTO 0x01
96
97	/* Second byte */
98	#define TEA5761_TUNCHECK_LEV_MASK 0xf0 /* Level Count */
99	#define TEA5761_TUNCHECK_LD 0x08
100	#define TEA5761_TUNCHECK_STEREO 0x04
101
102	/* TESTREG - Read: bytes 10 and 11 / Write: bytes 5 and 6 */
103
104	/* All zero = no test mode */
105
106	/* MANID - Read: bytes 12 and 13 */
107
108	/* First byte - should be 0x10 */
109	#define TEA5767_MANID_VERSION_MASK 0xf0 /* Version = 1 */
110	#define TEA5767_MANID_ID_MSB_MASK 0x0f /* Manufacurer ID - should be 0 */
111
112	/* Second byte - Should be 0x2b */
113
114	#define TEA5767_MANID_ID_LSB_MASK 0xfe /* Manufacturer ID - should be 0x15 */
115	#define TEA5767_MANID_IDAV 0x01 /* 1 = Chip has ID, 0 = Chip has no ID */
116
117	/* Chip ID - Read: bytes 14 and 15 */
118
119	/* First byte - should be 0x57 */
120
121	/* Second byte - should be 0x61 */
122
123	/*****************************************************************************/
124
8573a9e6 MCC	125	#define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
	126	static void tea5761_status_dump(unsigned char *buffer)
	127	{
	128	unsigned int div, frq;
	129
	130	div = ((buffer[2] & 0x3f) << 8) \| buffer[3];
	131
	132	frq = 1000 * (div * 32768 / 1000 + FREQ_OFFSET + 225) / 4; /* Freq in KHz */
	133
2756665c	134	printk(KERN_INFO "tea5761: Frequency %d.%03d KHz (divider = 0x%04x)\n",
8573a9e6 MCC	135	frq / 1000, frq % 1000, div);
	136	}
	137
	138	/* Freq should be specifyed at 62.5 Hz */
2d351df4 MCC	139	static int __set_radio_freq(struct dvb_frontend *fe,
	140	unsigned int freq,
	141	bool mono)
8573a9e6	142	{
7ab10bf7	143	struct tea5761_priv *priv = fe->tuner_priv;
2d351df4	144	unsigned int frq = freq;
8573a9e6 MCC	145	unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
	146	unsigned div;
	147	int rc;
	148
7ab10bf7	149	tuner_dbg("radio freq counter %d\n", frq);
8573a9e6	150
2d351df4	151	if (priv->standby) {
8573a9e6 MCC	152	tuner_dbg("TEA5761 set to standby mode\n");
	153	buffer[5] \|= TEA5761_TNCTRL_MU;
	154	} else {
	155	buffer[4] \|= TEA5761_TNCTRL_PUPD_0;
	156	}
	157
	158
2d351df4	159	if (mono) {
8573a9e6 MCC	160	tuner_dbg("TEA5761 set to mono\n");
8573a9e6 MCC	161	buffer[5] \|= TEA5761_TNCTRL_MST;
8573a9e6 MCC	162	} else {
	163	tuner_dbg("TEA5761 set to stereo\n");
	164	}
	165
	166	div = (1000 * (frq * 4 / 16 + 700 + 225) ) >> 15;
	167	buffer[1] = (div >> 8) & 0x3f;
	168	buffer[2] = div & 0xff;
	169
7ab10bf7	170	if (debug)
8573a9e6 MCC	171	tea5761_status_dump(buffer);
8573a9e6 MCC	172
db8a6956	173	if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
8573a9e6	174	tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
7ab10bf7 MK	175
	176	priv->frequency = frq * 125 / 2;
	177
	178	return 0;
8573a9e6 MCC	179	}
8573a9e6 MCC	180
2d351df4 MCC	181	static int set_radio_freq(struct dvb_frontend *fe,
	182	struct analog_parameters *params)
	183	{
	184	struct tea5761_priv *priv = fe->analog_demod_priv;
	185
	186	priv->standby = false;
	187
	188	return __set_radio_freq(fe, params->frequency,
	189	params->audmode == V4L2_TUNER_MODE_MONO);
	190	}
	191
	192	static int set_radio_sleep(struct dvb_frontend *fe)
	193	{
	194	struct tea5761_priv *priv = fe->analog_demod_priv;
	195
	196	priv->standby = true;
	197
	198	return __set_radio_freq(fe, priv->frequency, false);
	199	}
	200
fd443f74	201	static int tea5761_read_status(struct dvb_frontend fe, char buffer)
8573a9e6	202	{
7ab10bf7	203	struct tea5761_priv *priv = fe->tuner_priv;
fd443f74	204	int rc;
8573a9e6	205
fd443f74 MK	206	memset(buffer, 0, 16);
	207	if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16))) {
	208	tuner_warn("i2c i/o error: rc == %d (should be 16)\n", rc);
	209	return -EREMOTEIO;
	210	}
8573a9e6	211
fd443f74	212	return 0;
8573a9e6 MCC	213	}
8573a9e6 MCC	214
fd443f74	215	static inline int tea5761_signal(struct dvb_frontend fe, const char buffer)
8573a9e6	216	{
7ab10bf7	217	struct tea5761_priv *priv = fe->tuner_priv;
8573a9e6	218
fd443f74 MK	219	int signal = ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));
	220
	221	tuner_dbg("Signal strength: %d\n", signal);
8573a9e6	222
fd443f74 MK	223	return signal;
fd443f74 MK	224	}
8573a9e6	225
fd443f74 MK	226	static inline int tea5761_stereo(struct dvb_frontend fe, const char buffer)
	227	{
	228	struct tea5761_priv *priv = fe->tuner_priv;
8573a9e6	229
fd443f74 MK	230	int stereo = buffer[9] & TEA5761_TUNCHECK_STEREO;
	231
	232	tuner_dbg("Radio ST GET = %02x\n", stereo);
	233
	234	return (stereo ? V4L2_TUNER_SUB_STEREO : 0);
8573a9e6 MCC	235	}
8573a9e6 MCC	236
7ab10bf7 MK	237	static int tea5761_get_status(struct dvb_frontend fe, u32 status)
7ab10bf7 MK	238	{
fd443f74	239	unsigned char buffer[16];
7ab10bf7 MK	240
	241	*status = 0;
	242
fd443f74 MK	243	if (0 == tea5761_read_status(fe, buffer)) {
	244	if (tea5761_signal(fe, buffer))
	245	*status = TUNER_STATUS_LOCKED;
	246	if (tea5761_stereo(fe, buffer))
	247	*status \|= TUNER_STATUS_STEREO;
	248	}
	249
	250	return 0;
	251	}
	252
	253	static int tea5761_get_rf_strength(struct dvb_frontend fe, u16 strength)
	254	{
	255	unsigned char buffer[16];
	256
	257	*strength = 0;
7ab10bf7	258
fd443f74 MK	259	if (0 == tea5761_read_status(fe, buffer))
fd443f74 MK	260	*strength = tea5761_signal(fe, buffer);
7ab10bf7 MK	261
	262	return 0;
	263	}
	264
	265	int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
8573a9e6 MCC	266	{
	267	unsigned char buffer[16];
	268	int rc;
7ab10bf7	269	struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
8573a9e6	270
db8a6956	271	if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
7ab10bf7	272	printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
867e835f	273	return -EINVAL;
8573a9e6 MCC	274	}
8573a9e6 MCC	275
867e835f MCC	276	if ((buffer[13] != 0x2b) \|\| (buffer[14] != 0x57) \|\| (buffer[15] != 0x061)) {
	277	printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x."
	278	" It is not a TEA5761\n",
	279	buffer[13], buffer[14], buffer[15]);
	280	return -EINVAL;
8573a9e6	281	}
867e835f MCC	282	printk(KERN_WARNING "tea5761: TEA%02x%02x detected. "
	283	"Manufacturer ID= 0x%02x\n",
	284	buffer[14], buffer[15], buffer[13]);
	285
7ab10bf7 MK	286	return 0;
	287	}
	288
	289	static int tea5761_release(struct dvb_frontend *fe)
	290	{
	291	kfree(fe->tuner_priv);
	292	fe->tuner_priv = NULL;
	293
8573a9e6 MCC	294	return 0;
	295	}
	296
7ab10bf7	297	static int tea5761_get_frequency(struct dvb_frontend fe, u32 frequency)
db8a6956	298	{
7ab10bf7 MK	299	struct tea5761_priv *priv = fe->tuner_priv;
	300	*frequency = priv->frequency;
	301	return 0;
db8a6956 MK	302	}
db8a6956 MK	303
7ab10bf7 MK	304	static struct dvb_tuner_ops tea5761_tuner_ops = {
	305	.info = {
	306	.name = "tea5761", // Philips TEA5761HN FM Radio
	307	},
	308	.set_analog_params = set_radio_freq,
2d351df4	309	.sleep = set_radio_sleep,
7ab10bf7 MK	310	.release = tea5761_release,
	311	.get_frequency = tea5761_get_frequency,
	312	.get_status = tea5761_get_status,
fd443f74	313	.get_rf_strength = tea5761_get_rf_strength,
e407cd54 MK	314	};
e407cd54 MK	315
7ab10bf7 MK	316	struct dvb_frontend tea5761_attach(struct dvb_frontend fe,
	317	struct i2c_adapter* i2c_adap,
	318	u8 i2c_addr)
8573a9e6	319	{
db8a6956	320	struct tea5761_priv *priv = NULL;
8573a9e6	321
4277106b	322	if (tea5761_autodetection(i2c_adap, i2c_addr) != 0)
7ab10bf7	323	return NULL;
8573a9e6	324
db8a6956 MK	325	priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
db8a6956 MK	326	if (priv == NULL)
7ab10bf7 MK	327	return NULL;
7ab10bf7 MK	328	fe->tuner_priv = priv;
db8a6956	329
7ab10bf7 MK	330	priv->i2c_props.addr = i2c_addr;
7ab10bf7 MK	331	priv->i2c_props.adap = i2c_adap;
2756665c	332	priv->i2c_props.name = "tea5761";
db8a6956	333
7ab10bf7 MK	334	memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
7ab10bf7 MK	335	sizeof(struct dvb_tuner_ops));
8573a9e6	336
7ab10bf7	337	tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");
8573a9e6	338
7ab10bf7	339	return fe;
8573a9e6	340	}
7ab10bf7 MK	341
	342
	343	EXPORT_SYMBOL_GPL(tea5761_attach);
	344	EXPORT_SYMBOL_GPL(tea5761_autodetection);
	345
	346	MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
	347	MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
	348	MODULE_LICENSE("GPL");