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

// SPDX-License-Identifier: GPL-2.0
// For Philips TEA5761 FM Chip
// I2C address is always 0x20 (0x10 at 7-bit mode).
//
// Copyright (c) 2005-2007 Mauro Carvalho Chehab <mchehab@kernel.org>

#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 void tea5761_release(struct dvb_frontend *fe)
{
	kfree(fe->tuner_priv);
	fe->tuner_priv = NULL;
}

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

static const 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@kernel.org>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
0c20e8ca MCC	1	// SPDX-License-Identifier: GPL-2.0
	2	// For Philips TEA5761 FM Chip
	3	// I2C address is always 0x20 (0x10 at 7-bit mode).
	4	//
32590819	5	// Copyright (c) 2005-2007 Mauro Carvalho Chehab <mchehab@kernel.org>
8573a9e6 MCC	6
8573a9e6 MCC	7	#include <linux/i2c.h>
5a0e3ad6	8	#include <linux/slab.h>
8573a9e6	9	#include <linux/delay.h>
7f6adeaf	10	#include <linux/videodev2.h>
8573a9e6	11	#include <media/tuner.h>
7ab10bf7 MK	12	#include "tuner-i2c.h"
7ab10bf7 MK	13	#include "tea5761.h"
8573a9e6	14
ff699e6b	15	static int debug;
7ab10bf7 MK	16	module_param(debug, int, 0644);
7ab10bf7 MK	17	MODULE_PARM_DESC(debug, "enable verbose debug messages");
8573a9e6	18
db8a6956 MK	19	struct tea5761_priv {
db8a6956 MK	20	struct tuner_i2c_props i2c_props;
7ab10bf7 MK	21
7ab10bf7 MK	22	u32 frequency;
2d351df4	23	bool standby;
db8a6956 MK	24	};
db8a6956 MK	25
8573a9e6 MCC	26	/*****************************************************************************/
	27
	28	/***************************
	29	* TEA5761HN I2C registers *
	30	***************************/
	31
	32	/* INTREG - Read: bytes 0 and 1 / Write: byte 0 */
	33
	34	/* first byte for reading */
	35	#define TEA5761_INTREG_IFFLAG 0x10
	36	#define TEA5761_INTREG_LEVFLAG 0x8
	37	#define TEA5761_INTREG_FRRFLAG 0x2
	38	#define TEA5761_INTREG_BLFLAG 0x1
	39
	40	/* second byte for reading / byte for writing */
	41	#define TEA5761_INTREG_IFMSK 0x10
	42	#define TEA5761_INTREG_LEVMSK 0x8
	43	#define TEA5761_INTREG_FRMSK 0x2
	44	#define TEA5761_INTREG_BLMSK 0x1
	45
	46	/* FRQSET - Read: bytes 2 and 3 / Write: byte 1 and 2 */
	47
	48	/* First byte */
	49	#define TEA5761_FRQSET_SEARCH_UP 0x80 /* 1=Station search from botton to up */
	50	#define TEA5761_FRQSET_SEARCH_MODE 0x40 /* 1=Search mode */
	51
	52	/* Bits 0-5 for divider MSB */
	53
	54	/* Second byte */
	55	/* Bits 0-7 for divider LSB */
	56
	57	/* TNCTRL - Read: bytes 4 and 5 / Write: Bytes 3 and 4 */
	58
	59	/* first byte */
	60
	61	#define TEA5761_TNCTRL_PUPD_0 0x40 /* Power UP/Power Down MSB */
	62	#define TEA5761_TNCTRL_BLIM 0X20 /* 1= Japan Frequencies, 0= European frequencies */
	63	#define TEA5761_TNCTRL_SWPM 0x10 /* 1= software port is FRRFLAG */
	64	#define TEA5761_TNCTRL_IFCTC 0x08 /* 1= IF count time 15.02 ms, 0= IF count time 2.02 ms */
	65	#define TEA5761_TNCTRL_AFM 0x04
	66	#define TEA5761_TNCTRL_SMUTE 0x02 /* 1= Soft mute */
	67	#define TEA5761_TNCTRL_SNC 0x01
	68
	69	/* second byte */
	70
	71	#define TEA5761_TNCTRL_MU 0x80 /* 1=Hard mute */
	72	#define TEA5761_TNCTRL_SSL_1 0x40
	73	#define TEA5761_TNCTRL_SSL_0 0x20
	74	#define TEA5761_TNCTRL_HLSI 0x10
	75	#define TEA5761_TNCTRL_MST 0x08 /* 1 = mono */
	76	#define TEA5761_TNCTRL_SWP 0x04
	77	#define TEA5761_TNCTRL_DTC 0x02 /* 1 = deemphasis 50 us, 0 = deemphasis 75 us */
	78	#define TEA5761_TNCTRL_AHLSI 0x01
	79
	80	/* FRQCHECK - Read: bytes 6 and 7 */
	81	/* First byte */
	82
	83	/* Bits 0-5 for divider MSB */
	84
	85	/* Second byte */
	86	/* Bits 0-7 for divider LSB */
	87
	88	/* TUNCHECK - Read: bytes 8 and 9 */
	89
90	/* First byte */
91	#define TEA5761_TUNCHECK_IF_MASK 0x7e /* IF count */
92	#define TEA5761_TUNCHECK_TUNTO 0x01
93
94	/* Second byte */
95	#define TEA5761_TUNCHECK_LEV_MASK 0xf0 /* Level Count */
96	#define TEA5761_TUNCHECK_LD 0x08
97	#define TEA5761_TUNCHECK_STEREO 0x04
98
99	/* TESTREG - Read: bytes 10 and 11 / Write: bytes 5 and 6 */
100
101	/* All zero = no test mode */
102
103	/* MANID - Read: bytes 12 and 13 */
104
105	/* First byte - should be 0x10 */
106	#define TEA5767_MANID_VERSION_MASK 0xf0 /* Version = 1 */
107	#define TEA5767_MANID_ID_MSB_MASK 0x0f /* Manufacurer ID - should be 0 */
108
109	/* Second byte - Should be 0x2b */
110
111	#define TEA5767_MANID_ID_LSB_MASK 0xfe /* Manufacturer ID - should be 0x15 */
112	#define TEA5767_MANID_IDAV 0x01 /* 1 = Chip has ID, 0 = Chip has no ID */
113
114	/* Chip ID - Read: bytes 14 and 15 */
115
116	/* First byte - should be 0x57 */
117
118	/* Second byte - should be 0x61 */
119
120	/*****************************************************************************/
121
8573a9e6 MCC	122	#define FREQ_OFFSET 0 /* for TEA5767, it is 700 to give the right freq */
	123	static void tea5761_status_dump(unsigned char *buffer)
	124	{
	125	unsigned int div, frq;
	126
	127	div = ((buffer[2] & 0x3f) << 8) \| buffer[3];
	128
	129	frq = 1000 * (div * 32768 / 1000 + FREQ_OFFSET + 225) / 4; /* Freq in KHz */
	130
2756665c	131	printk(KERN_INFO "tea5761: Frequency %d.%03d KHz (divider = 0x%04x)\n",
8573a9e6 MCC	132	frq / 1000, frq % 1000, div);
	133	}
	134
	135	/* Freq should be specifyed at 62.5 Hz */
2d351df4 MCC	136	static int __set_radio_freq(struct dvb_frontend *fe,
	137	unsigned int freq,
	138	bool mono)
8573a9e6	139	{
7ab10bf7	140	struct tea5761_priv *priv = fe->tuner_priv;
2d351df4	141	unsigned int frq = freq;
8573a9e6 MCC	142	unsigned char buffer[7] = {0, 0, 0, 0, 0, 0, 0 };
	143	unsigned div;
	144	int rc;
	145
7ab10bf7	146	tuner_dbg("radio freq counter %d\n", frq);
8573a9e6	147
2d351df4	148	if (priv->standby) {
8573a9e6 MCC	149	tuner_dbg("TEA5761 set to standby mode\n");
	150	buffer[5] \|= TEA5761_TNCTRL_MU;
	151	} else {
	152	buffer[4] \|= TEA5761_TNCTRL_PUPD_0;
	153	}
	154
	155
2d351df4	156	if (mono) {
8573a9e6 MCC	157	tuner_dbg("TEA5761 set to mono\n");
8573a9e6 MCC	158	buffer[5] \|= TEA5761_TNCTRL_MST;
8573a9e6 MCC	159	} else {
	160	tuner_dbg("TEA5761 set to stereo\n");
	161	}
	162
	163	div = (1000 * (frq * 4 / 16 + 700 + 225) ) >> 15;
	164	buffer[1] = (div >> 8) & 0x3f;
	165	buffer[2] = div & 0xff;
	166
7ab10bf7	167	if (debug)
8573a9e6 MCC	168	tea5761_status_dump(buffer);
8573a9e6 MCC	169
db8a6956	170	if (7 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 7)))
8573a9e6	171	tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
7ab10bf7 MK	172
	173	priv->frequency = frq * 125 / 2;
	174
	175	return 0;
8573a9e6 MCC	176	}
8573a9e6 MCC	177
2d351df4 MCC	178	static int set_radio_freq(struct dvb_frontend *fe,
	179	struct analog_parameters *params)
	180	{
	181	struct tea5761_priv *priv = fe->analog_demod_priv;
	182
	183	priv->standby = false;
	184
	185	return __set_radio_freq(fe, params->frequency,
	186	params->audmode == V4L2_TUNER_MODE_MONO);
	187	}
	188
	189	static int set_radio_sleep(struct dvb_frontend *fe)
	190	{
	191	struct tea5761_priv *priv = fe->analog_demod_priv;
	192
	193	priv->standby = true;
	194
	195	return __set_radio_freq(fe, priv->frequency, false);
	196	}
	197
fd443f74	198	static int tea5761_read_status(struct dvb_frontend fe, char buffer)
8573a9e6	199	{
7ab10bf7	200	struct tea5761_priv *priv = fe->tuner_priv;
fd443f74	201	int rc;
8573a9e6	202
fd443f74 MK	203	memset(buffer, 0, 16);
	204	if (16 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 16))) {
	205	tuner_warn("i2c i/o error: rc == %d (should be 16)\n", rc);
	206	return -EREMOTEIO;
	207	}
8573a9e6	208
fd443f74	209	return 0;
8573a9e6 MCC	210	}
8573a9e6 MCC	211
fd443f74	212	static inline int tea5761_signal(struct dvb_frontend fe, const char buffer)
8573a9e6	213	{
7ab10bf7	214	struct tea5761_priv *priv = fe->tuner_priv;
8573a9e6	215
fd443f74 MK	216	int signal = ((buffer[9] & TEA5761_TUNCHECK_LEV_MASK) << (13 - 4));
	217
	218	tuner_dbg("Signal strength: %d\n", signal);
8573a9e6	219
fd443f74 MK	220	return signal;
fd443f74 MK	221	}
8573a9e6	222
fd443f74 MK	223	static inline int tea5761_stereo(struct dvb_frontend fe, const char buffer)
	224	{
	225	struct tea5761_priv *priv = fe->tuner_priv;
8573a9e6	226
fd443f74 MK	227	int stereo = buffer[9] & TEA5761_TUNCHECK_STEREO;
	228
	229	tuner_dbg("Radio ST GET = %02x\n", stereo);
	230
	231	return (stereo ? V4L2_TUNER_SUB_STEREO : 0);
8573a9e6 MCC	232	}
8573a9e6 MCC	233
7ab10bf7 MK	234	static int tea5761_get_status(struct dvb_frontend fe, u32 status)
7ab10bf7 MK	235	{
fd443f74	236	unsigned char buffer[16];
7ab10bf7 MK	237
	238	*status = 0;
	239
fd443f74 MK	240	if (0 == tea5761_read_status(fe, buffer)) {
	241	if (tea5761_signal(fe, buffer))
	242	*status = TUNER_STATUS_LOCKED;
	243	if (tea5761_stereo(fe, buffer))
	244	*status \|= TUNER_STATUS_STEREO;
	245	}
	246
	247	return 0;
	248	}
	249
	250	static int tea5761_get_rf_strength(struct dvb_frontend fe, u16 strength)
	251	{
	252	unsigned char buffer[16];
	253
	254	*strength = 0;
7ab10bf7	255
fd443f74 MK	256	if (0 == tea5761_read_status(fe, buffer))
fd443f74 MK	257	*strength = tea5761_signal(fe, buffer);
7ab10bf7 MK	258
	259	return 0;
	260	}
	261
	262	int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
8573a9e6 MCC	263	{
	264	unsigned char buffer[16];
	265	int rc;
7ab10bf7	266	struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
8573a9e6	267
db8a6956	268	if (16 != (rc = tuner_i2c_xfer_recv(&i2c, buffer, 16))) {
7ab10bf7	269	printk(KERN_WARNING "it is not a TEA5761. Received %i chars.\n", rc);
867e835f	270	return -EINVAL;
8573a9e6 MCC	271	}
8573a9e6 MCC	272
867e835f	273	if ((buffer[13] != 0x2b) \|\| (buffer[14] != 0x57) \|\| (buffer[15] != 0x061)) {
8ca2e927	274	printk(KERN_WARNING "Manufacturer ID= 0x%02x, Chip ID = %02x%02x. It is not a TEA5761\n",
867e835f MCC	275	buffer[13], buffer[14], buffer[15]);
867e835f MCC	276	return -EINVAL;
8573a9e6	277	}
8ca2e927	278	printk(KERN_WARNING "tea5761: TEA%02x%02x detected. Manufacturer ID= 0x%02x\n",
867e835f MCC	279	buffer[14], buffer[15], buffer[13]);
867e835f MCC	280
7ab10bf7 MK	281	return 0;
	282	}
	283
f2709c20 MCC	284	static void tea5761_release(struct dvb_frontend *fe)
	285	{
	286	kfree(fe->tuner_priv);
	287	fe->tuner_priv = NULL;
	288	}
	289
7ab10bf7	290	static int tea5761_get_frequency(struct dvb_frontend fe, u32 frequency)
db8a6956	291	{
7ab10bf7 MK	292	struct tea5761_priv *priv = fe->tuner_priv;
	293	*frequency = priv->frequency;
	294	return 0;
db8a6956 MK	295	}
db8a6956 MK	296
96105144	297	static const struct dvb_tuner_ops tea5761_tuner_ops = {
7ab10bf7 MK	298	.info = {
	299	.name = "tea5761", // Philips TEA5761HN FM Radio
	300	},
	301	.set_analog_params = set_radio_freq,
2d351df4	302	.sleep = set_radio_sleep,
f2709c20	303	.release = tea5761_release,
7ab10bf7 MK	304	.get_frequency = tea5761_get_frequency,
7ab10bf7 MK	305	.get_status = tea5761_get_status,
fd443f74	306	.get_rf_strength = tea5761_get_rf_strength,
e407cd54 MK	307	};
e407cd54 MK	308
7ab10bf7 MK	309	struct dvb_frontend tea5761_attach(struct dvb_frontend fe,
	310	struct i2c_adapter* i2c_adap,
	311	u8 i2c_addr)
8573a9e6	312	{
db8a6956	313	struct tea5761_priv *priv = NULL;
8573a9e6	314
4277106b	315	if (tea5761_autodetection(i2c_adap, i2c_addr) != 0)
7ab10bf7	316	return NULL;
8573a9e6	317
db8a6956 MK	318	priv = kzalloc(sizeof(struct tea5761_priv), GFP_KERNEL);
db8a6956 MK	319	if (priv == NULL)
7ab10bf7 MK	320	return NULL;
7ab10bf7 MK	321	fe->tuner_priv = priv;
db8a6956	322
7ab10bf7 MK	323	priv->i2c_props.addr = i2c_addr;
7ab10bf7 MK	324	priv->i2c_props.adap = i2c_adap;
2756665c	325	priv->i2c_props.name = "tea5761";
db8a6956	326
7ab10bf7 MK	327	memcpy(&fe->ops.tuner_ops, &tea5761_tuner_ops,
7ab10bf7 MK	328	sizeof(struct dvb_tuner_ops));
8573a9e6	329
7ab10bf7	330	tuner_info("type set to %s\n", "Philips TEA5761HN FM Radio");
8573a9e6	331
7ab10bf7	332	return fe;
8573a9e6	333	}
7ab10bf7 MK	334
	335
	336	EXPORT_SYMBOL_GPL(tea5761_attach);
	337	EXPORT_SYMBOL_GPL(tea5761_autodetection);
	338
	339	MODULE_DESCRIPTION("Philips TEA5761 FM tuner driver");
32590819	340	MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>");
0c20e8ca	341	MODULE_LICENSE("GPL v2");