drivers/media/video/tda9887.c - fp2-dev/kernel/msm - Gitiles

 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
 #include <linux/i2c.h>
 #include <linux/types.h>
 #include <linux/videodev.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/delay.h>

 #include <media/audiochip.h>
 #include <media/tuner.h>
 #include <media/id.h>

 /* Chips:
    TDA9885 (PAL, NTSC)
    TDA9886 (PAL, SECAM, NTSC)
    TDA9887 (PAL, SECAM, NTSC, FM Radio)

    found on:
    - Pinnacle PCTV (Jul.2002 Version with MT2032, bttv)
       TDA9887 (world), TDA9885 (USA)
       Note: OP2 of tda988x must be set to 1, else MT2032 is disabled!
    - KNC One TV-Station RDS (saa7134)
    - Hauppauge PVR-150/500 (possibly more)
 */


 /* Addresses to scan */
 static unsigned short normal_i2c[] = {
 	0x84 >>1,
 	0x86 >>1,
 	0x96 >>1,
 	I2C_CLIENT_END,
 };
 I2C_CLIENT_INSMOD;

 /* insmod options */
 static unsigned int debug = 0;
 module_param(debug, int, 0644);
 MODULE_LICENSE("GPL");

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

 #define UNSET       (-1U)
 #define tda9887_info(fmt, arg...) do {\
 	printk(KERN_INFO "%s %d-%04x: " fmt, t->client.name, \
 			i2c_adapter_id(t->client.adapter), t->client.addr , ##arg); } while (0)
 #define tda9887_dbg(fmt, arg...) do {\
 	if (debug) \
 		printk(KERN_INFO "%s %d-%04x: " fmt, t->client.name, \
 			i2c_adapter_id(t->client.adapter), t->client.addr , ##arg); } while (0)

 struct tda9887 {
 	struct i2c_client  client;
 	v4l2_std_id        std;
 	enum tuner_mode    mode;
 	unsigned int       config;
 	unsigned int       pinnacle_id;
 	unsigned int       using_v4l2;
 	unsigned int 	   radio_mode;
 	unsigned char 	   data[4];
 };

 struct tvnorm {
 	v4l2_std_id       std;
 	char              *name;
 	unsigned char     b;
 	unsigned char     c;
 	unsigned char     e;
 };

 static struct i2c_driver driver;
 static struct i2c_client client_template;

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

 //
 // TDA defines
 //

 //// first reg (b)
 #define cVideoTrapBypassOFF     0x00    // bit b0
 #define cVideoTrapBypassON      0x01    // bit b0

 #define cAutoMuteFmInactive     0x00    // bit b1
 #define cAutoMuteFmActive       0x02    // bit b1

 #define cIntercarrier           0x00    // bit b2
 #define cQSS                    0x04    // bit b2

 #define cPositiveAmTV           0x00    // bit b3:4
 #define cFmRadio                0x08    // bit b3:4
 #define cNegativeFmTV           0x10    // bit b3:4


 #define cForcedMuteAudioON      0x20    // bit b5
 #define cForcedMuteAudioOFF     0x00    // bit b5

 #define cOutputPort1Active      0x00    // bit b6
 #define cOutputPort1Inactive    0x40    // bit b6

 #define cOutputPort2Active      0x00    // bit b7
 #define cOutputPort2Inactive    0x80    // bit b7


 //// second reg (c)
 #define cDeemphasisOFF          0x00    // bit c5
 #define cDeemphasisON           0x20    // bit c5

 #define cDeemphasis75           0x00    // bit c6
 #define cDeemphasis50           0x40    // bit c6

 #define cAudioGain0             0x00    // bit c7
 #define cAudioGain6             0x80    // bit c7


 //// third reg (e)
 #define cAudioIF_4_5             0x00    // bit e0:1
 #define cAudioIF_5_5             0x01    // bit e0:1
 #define cAudioIF_6_0             0x02    // bit e0:1
 #define cAudioIF_6_5             0x03    // bit e0:1


 #define cVideoIF_58_75           0x00    // bit e2:4
 #define cVideoIF_45_75           0x04    // bit e2:4
 #define cVideoIF_38_90           0x08    // bit e2:4
 #define cVideoIF_38_00           0x0C    // bit e2:4
 #define cVideoIF_33_90           0x10    // bit e2:4
 #define cVideoIF_33_40           0x14    // bit e2:4
 #define cRadioIF_45_75           0x18    // bit e2:4
 #define cRadioIF_38_90           0x1C    // bit e2:4


 #define cTunerGainNormal         0x00    // bit e5
 #define cTunerGainLow            0x20    // bit e5

 #define cGating_18               0x00    // bit e6
 #define cGating_36               0x40    // bit e6

 #define cAgcOutON                0x80    // bit e7
 #define cAgcOutOFF               0x00    // bit e7

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

 static struct tvnorm tvnorms[] = {
 	{
 		.std   = V4L2_STD_PAL_BG,
 		.name  = "PAL-BG",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis50  ),
 		.e     = ( cAudioIF_5_5   |
 			   cVideoIF_38_90 ),
 	},{
 		.std   = V4L2_STD_PAL_I,
 		.name  = "PAL-I",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis50  ),
 		.e     = ( cAudioIF_6_0   |
 			   cVideoIF_38_90 ),
 	},{
 		.std   = V4L2_STD_PAL_DK,
 		.name  = "PAL-DK",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis50  ),
 		.e     = ( cAudioIF_6_5   |
 			   cVideoIF_38_00 ),
 	},{
 		.std   = V4L2_STD_PAL_M | V4L2_STD_PAL_N,
 		.name  = "PAL-M/N",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis75  ),
 		.e     = ( cAudioIF_4_5   |
 			   cVideoIF_45_75 ),
 	},{
 		.std   = V4L2_STD_SECAM_L,
 		.name  = "SECAM-L",
 		.b     = ( cPositiveAmTV  |
 			   cQSS           ),
 		.e     = ( cGating_36	  |
 			   cAudioIF_6_5   |
 			   cVideoIF_38_90 ),
 	},{
 		.std   = V4L2_STD_SECAM_DK,
 		.name  = "SECAM-DK",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis50  ),
 		.e     = ( cAudioIF_6_5   |
 			   cVideoIF_38_00 ),
 	},{
 		.std   = V4L2_STD_NTSC_M,
 		.name  = "NTSC-M",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis75  ),
 		.e     = ( cGating_36     |
 			   cAudioIF_4_5   |
 			   cVideoIF_45_75 ),
 	},{
 		.std   = V4L2_STD_NTSC_M_JP,
 		.name  = "NTSC-JP",
 		.b     = ( cNegativeFmTV  |
 			   cQSS           ),
 		.c     = ( cDeemphasisON  |
 			   cDeemphasis50  ),
 		.e     = ( cGating_36     |
 			   cAudioIF_4_5   |
 			   cVideoIF_58_75 ),
 	}
 };

 static struct tvnorm radio_stereo = {
 	.name = "Radio Stereo",
 	.b    = ( cFmRadio       |
 		  cQSS           ),
 	.c    = ( cDeemphasisOFF |
 		  cAudioGain6 ),
 	.e    = ( cAudioIF_5_5   |
 		  cRadioIF_38_90 ),
 };

 static struct tvnorm radio_mono = {
 	.name = "Radio Mono",
 	.b    = ( cFmRadio       |
 		  cQSS           ),
 	.c    = ( cDeemphasisON  |
 		  cDeemphasis50),
 	.e    = ( cAudioIF_5_5   |
 		  cRadioIF_38_90 ),
 };

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

 static void dump_read_message(struct tda9887 *t, unsigned char *buf)
 {
 	static char *afc[16] = {
 		"- 12.5 kHz",
 		"- 37.5 kHz",
 		"- 62.5 kHz",
 		"- 87.5 kHz",
 		"-112.5 kHz",
 		"-137.5 kHz",
 		"-162.5 kHz",
 		"-187.5 kHz [min]",
 		"+187.5 kHz [max]",
 		"+162.5 kHz",
 		"+137.5 kHz",
 		"+112.5 kHz",
 		"+ 87.5 kHz",
 		"+ 62.5 kHz",
 		"+ 37.5 kHz",
 		"+ 12.5 kHz",
 	};
 	tda9887_info("read: 0x%2x\n", buf[0]);
 	tda9887_info("  after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no");
 	tda9887_info("  afc            : %s\n", afc[(buf[0] >> 1) & 0x0f]);
 	tda9887_info("  fmif level     : %s\n", (buf[0] & 0x20) ? "high" : "low");
 	tda9887_info("  afc window     : %s\n", (buf[0] & 0x40) ? "in" : "out");
 	tda9887_info("  vfi level      : %s\n", (buf[0] & 0x80) ? "high" : "low");
 }

 static void dump_write_message(struct tda9887 *t, unsigned char *buf)
 {
 	static char *sound[4] = {
 		"AM/TV",
 		"FM/radio",
 		"FM/TV",
 		"FM/radio"
 	};
 	static char *adjust[32] = {
 		"-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9",
 		"-8",  "-7",  "-6",  "-5",  "-4",  "-3",  "-2",  "-1",
 		"0",   "+1",  "+2",  "+3",  "+4",  "+5",  "+6",  "+7",
 		"+8",  "+9",  "+10", "+11", "+12", "+13", "+14", "+15"
 	};
 	static char *deemph[4] = {
 		"no", "no", "75", "50"
 	};
 	static char *carrier[4] = {
 		"4.5 MHz",
 		"5.5 MHz",
 		"6.0 MHz",
 		"6.5 MHz / AM"
 	};
 	static char *vif[8] = {
 		"58.75 MHz",
 		"45.75 MHz",
 		"38.9 MHz",
 		"38.0 MHz",
 		"33.9 MHz",
 		"33.4 MHz",
 		"45.75 MHz + pin13",
 		"38.9 MHz + pin13",
 	};
 	static char *rif[4] = {
 		"44 MHz",
 		"52 MHz",
 		"52 MHz",
 		"44 MHz",
 	};

 	tda9887_info("write: byte B 0x%02x\n",buf[1]);
 	tda9887_info("  B0   video mode      : %s\n",
 	       (buf[1] & 0x01) ? "video trap" : "sound trap");
 	tda9887_info("  B1   auto mute fm    : %s\n",
 	       (buf[1] & 0x02) ? "yes" : "no");
 	tda9887_info("  B2   carrier mode    : %s\n",
 	       (buf[1] & 0x04) ? "QSS" : "Intercarrier");
 	tda9887_info("  B3-4 tv sound/radio  : %s\n",
 	       sound[(buf[1] & 0x18) >> 3]);
 	tda9887_info("  B5   force mute audio: %s\n",
 	       (buf[1] & 0x20) ? "yes" : "no");
 	tda9887_info("  B6   output port 1   : %s\n",
 	       (buf[1] & 0x40) ? "high (inactive)" : "low (active)");
 	tda9887_info("  B7   output port 2   : %s\n",
 	       (buf[1] & 0x80) ? "high (inactive)" : "low (active)");

 	tda9887_info("write: byte C 0x%02x\n",buf[2]);
 	tda9887_info("  C0-4 top adjustment  : %s dB\n", adjust[buf[2] & 0x1f]);
 	tda9887_info("  C5-6 de-emphasis     : %s\n", deemph[(buf[2] & 0x60) >> 5]);
 	tda9887_info("  C7   audio gain      : %s\n",
 	       (buf[2] & 0x80) ? "-6" : "0");

 	tda9887_info("write: byte E 0x%02x\n",buf[3]);
 	tda9887_info("  E0-1 sound carrier   : %s\n",
 	       carrier[(buf[3] & 0x03)]);
 	tda9887_info("  E6   l pll gating   : %s\n",
 	       (buf[3] & 0x40) ? "36" : "13");

 	if (buf[1] & 0x08) {
 		/* radio */
 		tda9887_info("  E2-4 video if        : %s\n",
 		       rif[(buf[3] & 0x0c) >> 2]);
 		tda9887_info("  E7   vif agc output  : %s\n",
 		       (buf[3] & 0x80)
 		       ? ((buf[3] & 0x10) ? "fm-agc radio" : "sif-agc radio")
 		       : "fm radio carrier afc");
 	} else {
 		/* video */
 		tda9887_info("  E2-4 video if        : %s\n",
 		       vif[(buf[3] & 0x1c) >> 2]);
 		tda9887_info("  E5   tuner gain      : %s\n",
 		       (buf[3] & 0x80)
 		       ? ((buf[3] & 0x20) ? "external" : "normal")
 		       : ((buf[3] & 0x20) ? "minimum"  : "normal"));
 		tda9887_info("  E7   vif agc output  : %s\n",
 		       (buf[3] & 0x80)
 		       ? ((buf[3] & 0x20)
 			  ? "pin3 port, pin22 vif agc out"
 			  : "pin22 port, pin3 vif acg ext in")
 		       : "pin3+pin22 port");
 	}
 	tda9887_info("--\n");
 }

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

 static int tda9887_set_tvnorm(struct tda9887 *t, char *buf)
 {
 	struct tvnorm *norm = NULL;
 	int i;

 	if (t->mode == T_RADIO) {
 		if (t->radio_mode == V4L2_TUNER_MODE_MONO)
 			norm = &radio_mono;
 		else
 			norm = &radio_stereo;
 	} else {
 		for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
 			if (tvnorms[i].std & t->std) {
 				norm = tvnorms+i;
 				break;
 			}
 		}
 	}
 	if (NULL == norm) {
 		tda9887_dbg("Unsupported tvnorm entry - audio muted\n");
 		return -1;
 	}

 	tda9887_dbg("configure for: %s\n",norm->name);
 	buf[1] = norm->b;
 	buf[2] = norm->c;
 	buf[3] = norm->e;
 	return 0;
 }

 static unsigned int port1  = UNSET;
 static unsigned int port2  = UNSET;
 static unsigned int qss    = UNSET;
 static unsigned int adjust = 0x10;
 module_param(port1, int, 0644);
 module_param(port2, int, 0644);
 module_param(qss, int, 0644);
 module_param(adjust, int, 0644);

 static int tda9887_set_insmod(struct tda9887 *t, char *buf)
 {
 	if (UNSET != port1) {
 		if (port1)
 			buf[1] |= cOutputPort1Inactive;
 		else
 			buf[1] &= ~cOutputPort1Inactive;
 	}
 	if (UNSET != port2) {
 		if (port2)
 			buf[1] |= cOutputPort2Inactive;
 		else
 			buf[1] &= ~cOutputPort2Inactive;
 	}

 	if (UNSET != qss) {
 		if (qss)
 			buf[1] |= cQSS;
 		else
 			buf[1] &= ~cQSS;
 	}

 	if (adjust >= 0x00 && adjust < 0x20)
 		buf[2] |= adjust;
 	return 0;
 }

 static int tda9887_set_config(struct tda9887 *t, char *buf)
 {
 	if (t->config & TDA9887_PORT1_ACTIVE)
 		buf[1] &= ~cOutputPort1Inactive;
 	if (t->config & TDA9887_PORT1_INACTIVE)
 		buf[1] |= cOutputPort1Inactive;
 	if (t->config & TDA9887_PORT2_ACTIVE)
 		buf[1] &= ~cOutputPort2Inactive;
 	if (t->config & TDA9887_PORT2_INACTIVE)
 		buf[1] |= cOutputPort2Inactive;

 	if (t->config & TDA9887_QSS)
 		buf[1] |= cQSS;
 	if (t->config & TDA9887_INTERCARRIER)
 		buf[1] &= ~cQSS;

 	if (t->config & TDA9887_AUTOMUTE)
 		buf[1] |= cAutoMuteFmActive;
 	if (t->config & TDA9887_DEEMPHASIS_MASK) {
 		buf[2] &= ~0x60;
 		switch (t->config & TDA9887_DEEMPHASIS_MASK) {
 		case TDA9887_DEEMPHASIS_NONE:
 			buf[2] |= cDeemphasisOFF;
 			break;
 		case TDA9887_DEEMPHASIS_50:
 			buf[2] |= cDeemphasisON | cDeemphasis50;
 			break;
 		case TDA9887_DEEMPHASIS_75:
 			buf[2] |= cDeemphasisON | cDeemphasis75;
 			break;
 		}
 	}
 	if ((t->config & TDA9887_INTERCARRIER_NTSC) && (t->std & V4L2_STD_NTSC))
 		buf[1] &= ~cQSS;
 	return 0;
 }

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

 static int tda9887_set_pinnacle(struct tda9887 *t, char *buf)
 {
 	unsigned int bCarrierMode = UNSET;

 	if (t->std & V4L2_STD_625_50) {
 		if ((1 == t->pinnacle_id) || (7 == t->pinnacle_id)) {
 			bCarrierMode = cIntercarrier;
 		} else {
 			bCarrierMode = cQSS;
 		}
 	}
 	if (t->std & V4L2_STD_525_60) {
 		if ((5 == t->pinnacle_id) || (6 == t->pinnacle_id)) {
 			bCarrierMode = cIntercarrier;
 		} else {
 			bCarrierMode = cQSS;
 		}
 	}

 	if (bCarrierMode != UNSET) {
 		buf[1] &= ~0x04;
 		buf[1] |= bCarrierMode;
 	}
 	return 0;
 }

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

 static char pal[] = "-";
 module_param_string(pal, pal, sizeof(pal), 0644);
 static char secam[] = "-";
 module_param_string(secam, secam, sizeof(secam), 0644);

 static int tda9887_fixup_std(struct tda9887 *t)
 {
 	/* get more precise norm info from insmod option */
 	if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 		switch (pal[0]) {
 		case 'b':
 		case 'B':
 		case 'g':
 		case 'G':
 			tda9887_dbg("insmod fixup: PAL => PAL-BG\n");
 			t->std = V4L2_STD_PAL_BG;
 			break;
 		case 'i':
 		case 'I':
 			tda9887_dbg("insmod fixup: PAL => PAL-I\n");
 			t->std = V4L2_STD_PAL_I;
 			break;
 		case 'd':
 		case 'D':
 		case 'k':
 		case 'K':
 			tda9887_dbg("insmod fixup: PAL => PAL-DK\n");
 			t->std = V4L2_STD_PAL_DK;
 			break;
 		case '-':
 			/* default parameter, do nothing */
 			break;
 		default:
 			tda9887_info("pal= argument not recognised\n");
 			break;
 		}
 	}
 	if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 		switch (secam[0]) {
 		case 'd':
 		case 'D':
 		case 'k':
 		case 'K':
 			tda9887_dbg("insmod fixup: SECAM => SECAM-DK\n");
 			t->std = V4L2_STD_SECAM_DK;
 			break;
 		case 'l':
 		case 'L':
 			tda9887_dbg("insmod fixup: SECAM => SECAM-L\n");
 			t->std = V4L2_STD_SECAM_L;
 			break;
 		case '-':
 			/* default parameter, do nothing */
 			break;
 		default:
 			tda9887_info("secam= argument not recognised\n");
 			break;
 		}
 	}
 	return 0;
 }

 static int tda9887_status(struct tda9887 *t)
 {
 	unsigned char buf[1];
 	int rc;

 	memset(buf,0,sizeof(buf));
 	if (1 != (rc = i2c_master_recv(&t->client,buf,1)))
 		tda9887_info("i2c i/o error: rc == %d (should be 1)\n",rc);
 	dump_read_message(t, buf);
 	return 0;
 }

 static int tda9887_configure(struct tda9887 *t)
 {
 	int rc;

 	memset(t->data,0,sizeof(t->data));
 	tda9887_set_tvnorm(t,t->data);

 	t->data[1] |= cOutputPort1Inactive;
 	t->data[1] |= cOutputPort2Inactive;

 	if (UNSET != t->pinnacle_id) {
 		tda9887_set_pinnacle(t,t->data);
 	}
 	tda9887_set_config(t,t->data);
 	tda9887_set_insmod(t,t->data);

 	if (t->mode == T_STANDBY) {
 		t->data[1] |= cForcedMuteAudioON;
 	}


 	tda9887_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
 		t->data[1],t->data[2],t->data[3]);
 	if (debug > 1)
 		dump_write_message(t, t->data);

 	if (4 != (rc = i2c_master_send(&t->client,t->data,4)))
 		tda9887_info("i2c i/o error: rc == %d (should be 4)\n",rc);

 	if (debug > 2) {
 		msleep_interruptible(1000);
 		tda9887_status(t);
 	}
 	return 0;
 }

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

 static int tda9887_attach(struct i2c_adapter *adap, int addr, int kind)
 {
 	struct tda9887 *t;

 	client_template.adapter = adap;
 	client_template.addr    = addr;

 	if (NULL == (t = kmalloc(sizeof(*t), GFP_KERNEL)))
 		return -ENOMEM;
 	memset(t,0,sizeof(*t));

 	t->client      = client_template;
 	t->std         = 0;
 	t->pinnacle_id = UNSET;
 	t->radio_mode = V4L2_TUNER_MODE_STEREO;

 	tda9887_info("chip found @ 0x%x (%s)\n", addr<<1, adap->name);

 	i2c_set_clientdata(&t->client, t);
 	i2c_attach_client(&t->client);

 	return 0;
 }

 static int tda9887_probe(struct i2c_adapter *adap)
 {
 #ifdef I2C_CLASS_TV_ANALOG
 	if (adap->class & I2C_CLASS_TV_ANALOG)
 		return i2c_probe(adap, &addr_data, tda9887_attach);
 #else
 	switch (adap->id) {
 	case I2C_HW_B_BT848:
 	case I2C_HW_B_RIVA:
 	case I2C_HW_SAA7134:
 		return i2c_probe(adap, &addr_data, tda9887_attach);
 		break;
 	}
 #endif
 	return 0;
 }

 static int tda9887_detach(struct i2c_client *client)
 {
 	struct tda9887 *t = i2c_get_clientdata(client);

 	i2c_detach_client(client);
 	kfree(t);
 	return 0;
 }

 #define SWITCH_V4L2	if (!t->using_v4l2 && debug) \
 			  tda9887_info("switching to v4l2\n"); \
 			  t->using_v4l2 = 1;
 #define CHECK_V4L2	if (t->using_v4l2) { if (debug) \
 			  tda9887_info("ignore v4l1 call\n"); \
 			  return 0; }

 static int
 tda9887_command(struct i2c_client *client, unsigned int cmd, void *arg)
 {
 	struct tda9887 *t = i2c_get_clientdata(client);

 	switch (cmd) {

 	/* --- configuration --- */
 	case AUDC_SET_RADIO:
 	{
 		t->mode = T_RADIO;
 		tda9887_configure(t);
 		break;
 	}
 	case TUNER_SET_STANDBY:
 	{
 		t->mode = T_STANDBY;
 		tda9887_configure(t);
 		break;
 	}
 	case AUDC_CONFIG_PINNACLE:
 	{
 		int *i = arg;

 		t->pinnacle_id = *i;
 		tda9887_configure(t);
 		break;
 	}
 	case TDA9887_SET_CONFIG:
 	{
 		int *i = arg;

 		t->config = *i;
 		tda9887_configure(t);
 		break;
 	}
 	/* --- v4l ioctls --- */
 	/* take care: bttv does userspace copying, we'll get a
 	   kernel pointer here... */
 	case VIDIOCSCHAN:
 	{
 		static const v4l2_std_id map[] = {
 			[ VIDEO_MODE_PAL   ] = V4L2_STD_PAL,
 			[ VIDEO_MODE_NTSC  ] = V4L2_STD_NTSC_M,
 			[ VIDEO_MODE_SECAM ] = V4L2_STD_SECAM,
 			[ 4 /* bttv */     ] = V4L2_STD_PAL_M,
 			[ 5 /* bttv */     ] = V4L2_STD_PAL_N,
 			[ 6 /* bttv */     ] = V4L2_STD_NTSC_M_JP,
 		};
 		struct video_channel *vc = arg;

 		CHECK_V4L2;
 		t->mode = T_ANALOG_TV;
 		if (vc->norm < ARRAY_SIZE(map))
 			t->std = map[vc->norm];
 		tda9887_fixup_std(t);
 		tda9887_configure(t);
 		break;
 	}
 	case VIDIOC_S_STD:
 	{
 		v4l2_std_id *id = arg;

 		SWITCH_V4L2;
 		t->mode = T_ANALOG_TV;
 		t->std   = *id;
 		tda9887_fixup_std(t);
 		tda9887_configure(t);
 		break;
 	}
 	case VIDIOC_S_FREQUENCY:
 	{
 		struct v4l2_frequency *f = arg;

 		SWITCH_V4L2;
 		if (V4L2_TUNER_ANALOG_TV == f->type) {
 			if (t->mode == T_ANALOG_TV)
 				return 0;
 			t->mode = T_ANALOG_TV;
 		}
 		if (V4L2_TUNER_RADIO == f->type) {
 			if (t->mode == T_RADIO)
 				return 0;
 			t->mode = T_RADIO;
 		}
 		tda9887_configure(t);
 		break;
 	}
 	case VIDIOC_G_TUNER:
 	{
 		static int AFC_BITS_2_kHz[] = {
 			-12500,  -37500,  -62500,  -97500,
 			-112500, -137500, -162500, -187500,
 			187500,  162500,  137500,  112500,
 			97500 ,  62500,   37500 ,  12500
 		};
 		struct v4l2_tuner* tuner = arg;

 		if (t->mode == T_RADIO) {
 			__u8 reg = 0;
 			tuner->afc=0;
 			if (1 == i2c_master_recv(&t->client,&reg,1))
 				tuner->afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];
 		}
 		break;
 	}
 	case VIDIOC_S_TUNER:
 	{
 		struct v4l2_tuner* tuner = arg;

 		if (t->mode == T_RADIO) {
 			t->radio_mode = tuner->audmode;
 			tda9887_configure (t);
 		}
 		break;
 	}
 	case VIDIOC_LOG_STATUS:
 	{
 		tda9887_info("Data bytes: b=%02x c=%02x e=%02x\n", t->data[1], t->data[2], t->data[3]);
 		break;
 	}
 	default:
 		/* nothing */
 		break;
 	}
 	return 0;
 }

 static int tda9887_suspend(struct device * dev, pm_message_t state)
 {
 	struct i2c_client *c = container_of(dev, struct i2c_client, dev);
 	struct tda9887 *t = i2c_get_clientdata(c);

 	tda9887_dbg("suspend\n");
 	return 0;
 }

 static int tda9887_resume(struct device * dev)
 {
 	struct i2c_client *c = container_of(dev, struct i2c_client, dev);
 	struct tda9887 *t = i2c_get_clientdata(c);

 	tda9887_dbg("resume\n");
 	tda9887_configure(t);
 	return 0;
 }

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

 static struct i2c_driver driver = {
 	.owner          = THIS_MODULE,
         .name           = "i2c tda9887 driver",
         .id             = -1, /* FIXME */
         .flags          = I2C_DF_NOTIFY,
         .attach_adapter = tda9887_probe,
         .detach_client  = tda9887_detach,
         .command        = tda9887_command,
 	.driver = {
 		.suspend = tda9887_suspend,
 		.resume  = tda9887_resume,
 	},
 };
 static struct i2c_client client_template =
 {
 	.name      = "tda9887",
 	.flags     = I2C_CLIENT_ALLOW_USE,
         .driver    = &driver,
 };

 static int __init tda9887_init_module(void)
 {
 	return i2c_add_driver(&driver);
 }

 static void __exit tda9887_cleanup_module(void)
 {
 	i2c_del_driver(&driver);
 }

 module_init(tda9887_init_module);
 module_exit(tda9887_cleanup_module);

 /*
  * Overrides for Emacs so that we follow Linus's tabbing style.
  * ---------------------------------------------------------------------------
  * Local variables:
  * c-basic-offset: 8
  * End:
  */
	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/kernel.h>
	#include <linux/i2c.h>
	#include <linux/types.h>
	#include <linux/videodev.h>
	#include <linux/init.h>
	#include <linux/errno.h>
	#include <linux/slab.h>
	#include <linux/delay.h>

	#include <media/audiochip.h>
	#include <media/tuner.h>
	#include <media/id.h>

	/* Chips:
	TDA9885 (PAL, NTSC)
	TDA9886 (PAL, SECAM, NTSC)
	TDA9887 (PAL, SECAM, NTSC, FM Radio)

	found on:
	- Pinnacle PCTV (Jul.2002 Version with MT2032, bttv)
	TDA9887 (world), TDA9885 (USA)
	Note: OP2 of tda988x must be set to 1, else MT2032 is disabled!
	- KNC One TV-Station RDS (saa7134)
	- Hauppauge PVR-150/500 (possibly more)
	*/


	/* Addresses to scan */
	static unsigned short normal_i2c[] = {
	0x84 >>1,
	0x86 >>1,
	0x96 >>1,
	I2C_CLIENT_END,
	};
	I2C_CLIENT_INSMOD;

	/* insmod options */
	static unsigned int debug = 0;
	module_param(debug, int, 0644);
	MODULE_LICENSE("GPL");

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

	#define UNSET (-1U)
	#define tda9887_info(fmt, arg...) do {\
	printk(KERN_INFO "%s %d-%04x: " fmt, t->client.name, \
	i2c_adapter_id(t->client.adapter), t->client.addr , ##arg); } while (0)
	#define tda9887_dbg(fmt, arg...) do {\
	if (debug) \
	printk(KERN_INFO "%s %d-%04x: " fmt, t->client.name, \
	i2c_adapter_id(t->client.adapter), t->client.addr , ##arg); } while (0)

	struct tda9887 {
	struct i2c_client client;
	v4l2_std_id std;
	enum tuner_mode mode;
	unsigned int config;
	unsigned int pinnacle_id;
	unsigned int using_v4l2;
	unsigned int radio_mode;
	unsigned char data[4];
	};

	struct tvnorm {
	v4l2_std_id std;
	char *name;
	unsigned char b;
	unsigned char c;
	unsigned char e;
	};

	static struct i2c_driver driver;
	static struct i2c_client client_template;

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

	//
	// TDA defines
	//

	//// first reg (b)
	#define cVideoTrapBypassOFF 0x00 // bit b0
	#define cVideoTrapBypassON 0x01 // bit b0

	#define cAutoMuteFmInactive 0x00 // bit b1
	#define cAutoMuteFmActive 0x02 // bit b1

	#define cIntercarrier 0x00 // bit b2
	#define cQSS 0x04 // bit b2

	#define cPositiveAmTV 0x00 // bit b3:4
	#define cFmRadio 0x08 // bit b3:4
	#define cNegativeFmTV 0x10 // bit b3:4


	#define cForcedMuteAudioON 0x20 // bit b5
	#define cForcedMuteAudioOFF 0x00 // bit b5

	#define cOutputPort1Active 0x00 // bit b6
	#define cOutputPort1Inactive 0x40 // bit b6

	#define cOutputPort2Active 0x00 // bit b7
	#define cOutputPort2Inactive 0x80 // bit b7


	//// second reg (c)
	#define cDeemphasisOFF 0x00 // bit c5
	#define cDeemphasisON 0x20 // bit c5

	#define cDeemphasis75 0x00 // bit c6
	#define cDeemphasis50 0x40 // bit c6

	#define cAudioGain0 0x00 // bit c7
	#define cAudioGain6 0x80 // bit c7


	//// third reg (e)
	#define cAudioIF_4_5 0x00 // bit e0:1
	#define cAudioIF_5_5 0x01 // bit e0:1
	#define cAudioIF_6_0 0x02 // bit e0:1
	#define cAudioIF_6_5 0x03 // bit e0:1


	#define cVideoIF_58_75 0x00 // bit e2:4
	#define cVideoIF_45_75 0x04 // bit e2:4
	#define cVideoIF_38_90 0x08 // bit e2:4
	#define cVideoIF_38_00 0x0C // bit e2:4
	#define cVideoIF_33_90 0x10 // bit e2:4
	#define cVideoIF_33_40 0x14 // bit e2:4
	#define cRadioIF_45_75 0x18 // bit e2:4
	#define cRadioIF_38_90 0x1C // bit e2:4


	#define cTunerGainNormal 0x00 // bit e5
	#define cTunerGainLow 0x20 // bit e5

	#define cGating_18 0x00 // bit e6
	#define cGating_36 0x40 // bit e6

	#define cAgcOutON 0x80 // bit e7
	#define cAgcOutOFF 0x00 // bit e7

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

	static struct tvnorm tvnorms[] = {
	{
	.std = V4L2_STD_PAL_BG,
	.name = "PAL-BG",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50 ),
	.e = ( cAudioIF_5_5 \|
	cVideoIF_38_90 ),
	},{
	.std = V4L2_STD_PAL_I,
	.name = "PAL-I",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50 ),
	.e = ( cAudioIF_6_0 \|
	cVideoIF_38_90 ),
	},{
	.std = V4L2_STD_PAL_DK,
	.name = "PAL-DK",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50 ),
	.e = ( cAudioIF_6_5 \|
	cVideoIF_38_00 ),
	},{
	.std = V4L2_STD_PAL_M \| V4L2_STD_PAL_N,
	.name = "PAL-M/N",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis75 ),
	.e = ( cAudioIF_4_5 \|
	cVideoIF_45_75 ),
	},{
	.std = V4L2_STD_SECAM_L,
	.name = "SECAM-L",
	.b = ( cPositiveAmTV \|
	cQSS ),
	.e = ( cGating_36 \|
	cAudioIF_6_5 \|
	cVideoIF_38_90 ),
	},{
	.std = V4L2_STD_SECAM_DK,
	.name = "SECAM-DK",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50 ),
	.e = ( cAudioIF_6_5 \|
	cVideoIF_38_00 ),
	},{
	.std = V4L2_STD_NTSC_M,
	.name = "NTSC-M",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis75 ),
	.e = ( cGating_36 \|
	cAudioIF_4_5 \|
	cVideoIF_45_75 ),
	},{
	.std = V4L2_STD_NTSC_M_JP,
	.name = "NTSC-JP",
	.b = ( cNegativeFmTV \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50 ),
	.e = ( cGating_36 \|
	cAudioIF_4_5 \|
	cVideoIF_58_75 ),
	}
	};

	static struct tvnorm radio_stereo = {
	.name = "Radio Stereo",
	.b = ( cFmRadio \|
	cQSS ),
	.c = ( cDeemphasisOFF \|
	cAudioGain6 ),
	.e = ( cAudioIF_5_5 \|
	cRadioIF_38_90 ),
	};

	static struct tvnorm radio_mono = {
	.name = "Radio Mono",
	.b = ( cFmRadio \|
	cQSS ),
	.c = ( cDeemphasisON \|
	cDeemphasis50),
	.e = ( cAudioIF_5_5 \|
	cRadioIF_38_90 ),
	};

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

	static void dump_read_message(struct tda9887 t, unsigned char buf)
	{
	static char *afc[16] = {
	"- 12.5 kHz",
	"- 37.5 kHz",
	"- 62.5 kHz",
	"- 87.5 kHz",
	"-112.5 kHz",
	"-137.5 kHz",
	"-162.5 kHz",
	"-187.5 kHz [min]",
	"+187.5 kHz [max]",
	"+162.5 kHz",
	"+137.5 kHz",
	"+112.5 kHz",
	"+ 87.5 kHz",
	"+ 62.5 kHz",
	"+ 37.5 kHz",
	"+ 12.5 kHz",
	};
	tda9887_info("read: 0x%2x\n", buf[0]);
	tda9887_info(" after power on : %s\n", (buf[0] & 0x01) ? "yes" : "no");
	tda9887_info(" afc : %s\n", afc[(buf[0] >> 1) & 0x0f]);
	tda9887_info(" fmif level : %s\n", (buf[0] & 0x20) ? "high" : "low");
	tda9887_info(" afc window : %s\n", (buf[0] & 0x40) ? "in" : "out");
	tda9887_info(" vfi level : %s\n", (buf[0] & 0x80) ? "high" : "low");
	}

	static void dump_write_message(struct tda9887 t, unsigned char buf)
	{
	static char *sound[4] = {
	"AM/TV",
	"FM/radio",
	"FM/TV",
	"FM/radio"
	};
	static char *adjust[32] = {
	"-16", "-15", "-14", "-13", "-12", "-11", "-10", "-9",
	"-8", "-7", "-6", "-5", "-4", "-3", "-2", "-1",
	"0", "+1", "+2", "+3", "+4", "+5", "+6", "+7",
	"+8", "+9", "+10", "+11", "+12", "+13", "+14", "+15"
	};
	static char *deemph[4] = {
	"no", "no", "75", "50"
	};
	static char *carrier[4] = {
	"4.5 MHz",
	"5.5 MHz",
	"6.0 MHz",
	"6.5 MHz / AM"
	};
	static char *vif[8] = {
	"58.75 MHz",
	"45.75 MHz",
	"38.9 MHz",
	"38.0 MHz",
	"33.9 MHz",
	"33.4 MHz",
	"45.75 MHz + pin13",
	"38.9 MHz + pin13",
	};
	static char *rif[4] = {
	"44 MHz",
	"52 MHz",
	"52 MHz",
	"44 MHz",
	};

	tda9887_info("write: byte B 0x%02x\n",buf[1]);
	tda9887_info(" B0 video mode : %s\n",
	(buf[1] & 0x01) ? "video trap" : "sound trap");
	tda9887_info(" B1 auto mute fm : %s\n",
	(buf[1] & 0x02) ? "yes" : "no");
	tda9887_info(" B2 carrier mode : %s\n",
	(buf[1] & 0x04) ? "QSS" : "Intercarrier");
	tda9887_info(" B3-4 tv sound/radio : %s\n",
	sound[(buf[1] & 0x18) >> 3]);
	tda9887_info(" B5 force mute audio: %s\n",
	(buf[1] & 0x20) ? "yes" : "no");
	tda9887_info(" B6 output port 1 : %s\n",
	(buf[1] & 0x40) ? "high (inactive)" : "low (active)");
	tda9887_info(" B7 output port 2 : %s\n",
	(buf[1] & 0x80) ? "high (inactive)" : "low (active)");

	tda9887_info("write: byte C 0x%02x\n",buf[2]);
	tda9887_info(" C0-4 top adjustment : %s dB\n", adjust[buf[2] & 0x1f]);
	tda9887_info(" C5-6 de-emphasis : %s\n", deemph[(buf[2] & 0x60) >> 5]);
	tda9887_info(" C7 audio gain : %s\n",
	(buf[2] & 0x80) ? "-6" : "0");

	tda9887_info("write: byte E 0x%02x\n",buf[3]);
	tda9887_info(" E0-1 sound carrier : %s\n",
	carrier[(buf[3] & 0x03)]);
	tda9887_info(" E6 l pll gating : %s\n",
	(buf[3] & 0x40) ? "36" : "13");

	if (buf[1] & 0x08) {
	/* radio */
	tda9887_info(" E2-4 video if : %s\n",
	rif[(buf[3] & 0x0c) >> 2]);
	tda9887_info(" E7 vif agc output : %s\n",
	(buf[3] & 0x80)
	? ((buf[3] & 0x10) ? "fm-agc radio" : "sif-agc radio")
	: "fm radio carrier afc");
	} else {
	/* video */
	tda9887_info(" E2-4 video if : %s\n",
	vif[(buf[3] & 0x1c) >> 2]);
	tda9887_info(" E5 tuner gain : %s\n",
	(buf[3] & 0x80)
	? ((buf[3] & 0x20) ? "external" : "normal")
	: ((buf[3] & 0x20) ? "minimum" : "normal"));
	tda9887_info(" E7 vif agc output : %s\n",
	(buf[3] & 0x80)
	? ((buf[3] & 0x20)
	? "pin3 port, pin22 vif agc out"
	: "pin22 port, pin3 vif acg ext in")
	: "pin3+pin22 port");
	}
	tda9887_info("--\n");
	}

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

	static int tda9887_set_tvnorm(struct tda9887 t, char buf)
	{
	struct tvnorm *norm = NULL;
	int i;

	if (t->mode == T_RADIO) {
	if (t->radio_mode == V4L2_TUNER_MODE_MONO)
	norm = &radio_mono;
	else
	norm = &radio_stereo;
	} else {
	for (i = 0; i < ARRAY_SIZE(tvnorms); i++) {
	if (tvnorms[i].std & t->std) {
	norm = tvnorms+i;
	break;
	}
	}
	}
	if (NULL == norm) {
	tda9887_dbg("Unsupported tvnorm entry - audio muted\n");
	return -1;
	}

	tda9887_dbg("configure for: %s\n",norm->name);
	buf[1] = norm->b;
	buf[2] = norm->c;
	buf[3] = norm->e;
	return 0;
	}

	static unsigned int port1 = UNSET;
	static unsigned int port2 = UNSET;
	static unsigned int qss = UNSET;
	static unsigned int adjust = 0x10;
	module_param(port1, int, 0644);
	module_param(port2, int, 0644);
	module_param(qss, int, 0644);
	module_param(adjust, int, 0644);

	static int tda9887_set_insmod(struct tda9887 t, char buf)
	{
	if (UNSET != port1) {
	if (port1)
	buf[1] \|= cOutputPort1Inactive;
	else
	buf[1] &= ~cOutputPort1Inactive;
	}
	if (UNSET != port2) {
	if (port2)
	buf[1] \|= cOutputPort2Inactive;
	else
	buf[1] &= ~cOutputPort2Inactive;
	}

	if (UNSET != qss) {
	if (qss)
	buf[1] \|= cQSS;
	else
	buf[1] &= ~cQSS;
	}

	if (adjust >= 0x00 && adjust < 0x20)
	buf[2] \|= adjust;
	return 0;
	}

	static int tda9887_set_config(struct tda9887 t, char buf)
	{
	if (t->config & TDA9887_PORT1_ACTIVE)
	buf[1] &= ~cOutputPort1Inactive;
	if (t->config & TDA9887_PORT1_INACTIVE)
	buf[1] \|= cOutputPort1Inactive;
	if (t->config & TDA9887_PORT2_ACTIVE)
	buf[1] &= ~cOutputPort2Inactive;
	if (t->config & TDA9887_PORT2_INACTIVE)
	buf[1] \|= cOutputPort2Inactive;

	if (t->config & TDA9887_QSS)
	buf[1] \|= cQSS;
	if (t->config & TDA9887_INTERCARRIER)
	buf[1] &= ~cQSS;

	if (t->config & TDA9887_AUTOMUTE)
	buf[1] \|= cAutoMuteFmActive;
	if (t->config & TDA9887_DEEMPHASIS_MASK) {
	buf[2] &= ~0x60;
	switch (t->config & TDA9887_DEEMPHASIS_MASK) {
	case TDA9887_DEEMPHASIS_NONE:
	buf[2] \|= cDeemphasisOFF;
	break;
	case TDA9887_DEEMPHASIS_50:
	buf[2] \|= cDeemphasisON \| cDeemphasis50;
	break;
	case TDA9887_DEEMPHASIS_75:
	buf[2] \|= cDeemphasisON \| cDeemphasis75;
	break;
	}
	}
	if ((t->config & TDA9887_INTERCARRIER_NTSC) && (t->std & V4L2_STD_NTSC))
	buf[1] &= ~cQSS;
	return 0;
	}

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

	static int tda9887_set_pinnacle(struct tda9887 t, char buf)
	{
	unsigned int bCarrierMode = UNSET;

	if (t->std & V4L2_STD_625_50) {
	if ((1 == t->pinnacle_id) \|\| (7 == t->pinnacle_id)) {
	bCarrierMode = cIntercarrier;
	} else {
	bCarrierMode = cQSS;
	}
	}
	if (t->std & V4L2_STD_525_60) {
	if ((5 == t->pinnacle_id) \|\| (6 == t->pinnacle_id)) {
	bCarrierMode = cIntercarrier;
	} else {
	bCarrierMode = cQSS;
	}
	}

	if (bCarrierMode != UNSET) {
	buf[1] &= ~0x04;
	buf[1] \|= bCarrierMode;
	}
	return 0;
	}

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

	static char pal[] = "-";
	module_param_string(pal, pal, sizeof(pal), 0644);
	static char secam[] = "-";
	module_param_string(secam, secam, sizeof(secam), 0644);

	static int tda9887_fixup_std(struct tda9887 *t)
	{
	/* get more precise norm info from insmod option */
	if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
	switch (pal[0]) {
	case 'b':
	case 'B':
	case 'g':
	case 'G':
	tda9887_dbg("insmod fixup: PAL => PAL-BG\n");
	t->std = V4L2_STD_PAL_BG;
	break;
	case 'i':
	case 'I':
	tda9887_dbg("insmod fixup: PAL => PAL-I\n");
	t->std = V4L2_STD_PAL_I;
	break;
	case 'd':
	case 'D':
	case 'k':
	case 'K':
	tda9887_dbg("insmod fixup: PAL => PAL-DK\n");
	t->std = V4L2_STD_PAL_DK;
	break;
	case '-':
	/* default parameter, do nothing */
	break;
	default:
	tda9887_info("pal= argument not recognised\n");
	break;
	}
	}
	if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
	switch (secam[0]) {
	case 'd':
	case 'D':
	case 'k':
	case 'K':
	tda9887_dbg("insmod fixup: SECAM => SECAM-DK\n");
	t->std = V4L2_STD_SECAM_DK;
	break;
	case 'l':
	case 'L':
	tda9887_dbg("insmod fixup: SECAM => SECAM-L\n");
	t->std = V4L2_STD_SECAM_L;
	break;
	case '-':
	/* default parameter, do nothing */
	break;
	default:
	tda9887_info("secam= argument not recognised\n");
	break;
	}
	}
	return 0;
	}

	static int tda9887_status(struct tda9887 *t)
	{
	unsigned char buf[1];
	int rc;

	memset(buf,0,sizeof(buf));
	if (1 != (rc = i2c_master_recv(&t->client,buf,1)))
	tda9887_info("i2c i/o error: rc == %d (should be 1)\n",rc);
	dump_read_message(t, buf);
	return 0;
	}

	static int tda9887_configure(struct tda9887 *t)
	{
	int rc;

	memset(t->data,0,sizeof(t->data));
	tda9887_set_tvnorm(t,t->data);

	t->data[1] \|= cOutputPort1Inactive;
	t->data[1] \|= cOutputPort2Inactive;

	if (UNSET != t->pinnacle_id) {
	tda9887_set_pinnacle(t,t->data);
	}
	tda9887_set_config(t,t->data);
	tda9887_set_insmod(t,t->data);

	if (t->mode == T_STANDBY) {
	t->data[1] \|= cForcedMuteAudioON;
	}


	tda9887_dbg("writing: b=0x%02x c=0x%02x e=0x%02x\n",
	t->data[1],t->data[2],t->data[3]);
	if (debug > 1)
	dump_write_message(t, t->data);

	if (4 != (rc = i2c_master_send(&t->client,t->data,4)))
	tda9887_info("i2c i/o error: rc == %d (should be 4)\n",rc);

	if (debug > 2) {
	msleep_interruptible(1000);
	tda9887_status(t);
	}
	return 0;
	}

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

	static int tda9887_attach(struct i2c_adapter *adap, int addr, int kind)
	{
	struct tda9887 *t;

	client_template.adapter = adap;
	client_template.addr = addr;

	if (NULL == (t = kmalloc(sizeof(*t), GFP_KERNEL)))
	return -ENOMEM;
	memset(t,0,sizeof(*t));

	t->client = client_template;
	t->std = 0;
	t->pinnacle_id = UNSET;
	t->radio_mode = V4L2_TUNER_MODE_STEREO;

	tda9887_info("chip found @ 0x%x (%s)\n", addr<<1, adap->name);

	i2c_set_clientdata(&t->client, t);
	i2c_attach_client(&t->client);

	return 0;
	}

	static int tda9887_probe(struct i2c_adapter *adap)
	{
	#ifdef I2C_CLASS_TV_ANALOG
	if (adap->class & I2C_CLASS_TV_ANALOG)
	return i2c_probe(adap, &addr_data, tda9887_attach);
	#else
	switch (adap->id) {
	case I2C_HW_B_BT848:
	case I2C_HW_B_RIVA:
	case I2C_HW_SAA7134:
	return i2c_probe(adap, &addr_data, tda9887_attach);
	break;
	}
	#endif
	return 0;
	}

	static int tda9887_detach(struct i2c_client *client)
	{
	struct tda9887 *t = i2c_get_clientdata(client);

	i2c_detach_client(client);
	kfree(t);
	return 0;
	}

	#define SWITCH_V4L2 if (!t->using_v4l2 && debug) \
	tda9887_info("switching to v4l2\n"); \
	t->using_v4l2 = 1;
	#define CHECK_V4L2 if (t->using_v4l2) { if (debug) \
	tda9887_info("ignore v4l1 call\n"); \
	return 0; }

	static int
	tda9887_command(struct i2c_client client, unsigned int cmd, void arg)
	{
	struct tda9887 *t = i2c_get_clientdata(client);

	switch (cmd) {

	/* --- configuration --- */
	case AUDC_SET_RADIO:
	{
	t->mode = T_RADIO;
	tda9887_configure(t);
	break;
	}
	case TUNER_SET_STANDBY:
	{
	t->mode = T_STANDBY;
	tda9887_configure(t);
	break;
	}
	case AUDC_CONFIG_PINNACLE:
	{
	int *i = arg;

	t->pinnacle_id = *i;
	tda9887_configure(t);
	break;
	}
	case TDA9887_SET_CONFIG:
	{
	int *i = arg;

	t->config = *i;
	tda9887_configure(t);
	break;
	}
	/* --- v4l ioctls --- */
	/* take care: bttv does userspace copying, we'll get a
	kernel pointer here... */
	case VIDIOCSCHAN:
	{
	static const v4l2_std_id map[] = {
	[ VIDEO_MODE_PAL ] = V4L2_STD_PAL,
	[ VIDEO_MODE_NTSC ] = V4L2_STD_NTSC_M,
	[ VIDEO_MODE_SECAM ] = V4L2_STD_SECAM,
	[ 4 /* bttv */ ] = V4L2_STD_PAL_M,
	[ 5 /* bttv */ ] = V4L2_STD_PAL_N,
	[ 6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
	};
	struct video_channel *vc = arg;

	CHECK_V4L2;
	t->mode = T_ANALOG_TV;
	if (vc->norm < ARRAY_SIZE(map))
	t->std = map[vc->norm];
	tda9887_fixup_std(t);
	tda9887_configure(t);
	break;
	}
	case VIDIOC_S_STD:
	{
	v4l2_std_id *id = arg;

	SWITCH_V4L2;
	t->mode = T_ANALOG_TV;
	t->std = *id;
	tda9887_fixup_std(t);
	tda9887_configure(t);
	break;
	}
	case VIDIOC_S_FREQUENCY:
	{
	struct v4l2_frequency *f = arg;

	SWITCH_V4L2;
	if (V4L2_TUNER_ANALOG_TV == f->type) {
	if (t->mode == T_ANALOG_TV)
	return 0;
	t->mode = T_ANALOG_TV;
	}
	if (V4L2_TUNER_RADIO == f->type) {
	if (t->mode == T_RADIO)
	return 0;
	t->mode = T_RADIO;
	}
	tda9887_configure(t);
	break;
	}
	case VIDIOC_G_TUNER:
	{
	static int AFC_BITS_2_kHz[] = {
	-12500, -37500, -62500, -97500,
	-112500, -137500, -162500, -187500,
	187500, 162500, 137500, 112500,
	97500 , 62500, 37500 , 12500
	};
	struct v4l2_tuner* tuner = arg;

	if (t->mode == T_RADIO) {
	__u8 reg = 0;
	tuner->afc=0;
	if (1 == i2c_master_recv(&t->client,&reg,1))
	tuner->afc = AFC_BITS_2_kHz[(reg>>1)&0x0f];
	}
	break;
	}
	case VIDIOC_S_TUNER:
	{
	struct v4l2_tuner* tuner = arg;

	if (t->mode == T_RADIO) {
	t->radio_mode = tuner->audmode;
	tda9887_configure (t);
	}
	break;
	}
	case VIDIOC_LOG_STATUS:
	{
	tda9887_info("Data bytes: b=%02x c=%02x e=%02x\n", t->data[1], t->data[2], t->data[3]);
	break;
	}
	default:
	/* nothing */
	break;
	}
	return 0;
	}

	static int tda9887_suspend(struct device * dev, pm_message_t state)
	{
	struct i2c_client *c = container_of(dev, struct i2c_client, dev);
	struct tda9887 *t = i2c_get_clientdata(c);

	tda9887_dbg("suspend\n");
	return 0;
	}

	static int tda9887_resume(struct device * dev)
	{
	struct i2c_client *c = container_of(dev, struct i2c_client, dev);
	struct tda9887 *t = i2c_get_clientdata(c);

	tda9887_dbg("resume\n");
	tda9887_configure(t);
	return 0;
	}

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

	static struct i2c_driver driver = {
	.owner = THIS_MODULE,
	.name = "i2c tda9887 driver",
	.id = -1, /* FIXME */
	.flags = I2C_DF_NOTIFY,
	.attach_adapter = tda9887_probe,
	.detach_client = tda9887_detach,
	.command = tda9887_command,
	.driver = {
	.suspend = tda9887_suspend,
	.resume = tda9887_resume,
	},
	};
	static struct i2c_client client_template =
	{
	.name = "tda9887",
	.flags = I2C_CLIENT_ALLOW_USE,
	.driver = &driver,
	};

	static int __init tda9887_init_module(void)
	{
	return i2c_add_driver(&driver);
	}

	static void __exit tda9887_cleanup_module(void)
	{
	i2c_del_driver(&driver);
	}

	module_init(tda9887_init_module);
	module_exit(tda9887_cleanup_module);

	/*
	* Overrides for Emacs so that we follow Linus's tabbing style.
	* ---------------------------------------------------------------------------
	* Local variables:
	* c-basic-offset: 8
	* End:
	*/