V4L/DVB (7469): Preparation for supporting new devices, cleanup and saneness

To prepare the support for new device to the flexcop-family some preparation and cleanups was done + some saneness:

- created an i2c-adapter for each i2c-port available. Easier usage for devices with several device on different i2c-busses
- initialize i2c before doing the eeprom read
- changed the way to attach the different frontends, easier to read now
- enabled support for i2c-devices having no register address (1-byte access)

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/b2c2/flexcop-common.h

@@ -44,6 +44,14 @@ struct flexcop_dma {
 	u32 size; /* size of each address in bytes */
 };
 
+struct flexcop_i2c_adapter {
+	struct flexcop_device *fc;
+	struct i2c_adapter i2c_adap;
+
+	u8 no_base_addr;
+	flexcop_i2c_port_t port;
+};
+
 /* Control structure for data definitions that are common to
  * the B2C2-based PCI and USB devices.
  */
@@ -72,7 +80,7 @@ struct flexcop_device {
 	struct dmx_frontend mem_frontend;
 	int (*fe_sleep) (struct dvb_frontend *);
 
-	struct i2c_adapter i2c_adap;
+	struct flexcop_i2c_adapter fc_i2c_adap[3];
 	struct mutex i2c_mutex;
 	struct module *owner;
 
@@ -87,7 +95,8 @@ struct flexcop_device {
 	int               (*write_ibi_reg) (struct flexcop_device *, flexcop_ibi_register, flexcop_ibi_value);
 
 
-	int (*i2c_request) (struct flexcop_device*, flexcop_access_op_t, flexcop_i2c_port_t, u8 chipaddr, u8 addr, u8 *buf, u16 len);
+	int (*i2c_request) (struct flexcop_i2c_adapter*,
+		flexcop_access_op_t, u8 chipaddr, u8 addr, u8 *buf, u16 len);
 	int (*stream_control) (struct flexcop_device*, int);
 
 	int (*get_mac_addr) (struct flexcop_device *fc, int extended);
@@ -128,8 +137,8 @@ int flexcop_eeprom_check_mac_addr(struct flexcop_device *fc, int extended);
  * one. We have it in flexcop-i2c.c, because it is going via the actual
  * I2C-channel of the flexcop.
  */
-int flexcop_i2c_request(struct flexcop_device*, flexcop_access_op_t,
-			flexcop_i2c_port_t, u8 chipaddr, u8 addr, u8 *buf, u16 len);
+int flexcop_i2c_request(struct flexcop_i2c_adapter*, flexcop_access_op_t,
+	u8 chipaddr, u8 addr, u8 *buf, u16 len);
 
 /* from flexcop-sram.c */
 int flexcop_sram_set_dest(struct flexcop_device *fc, flexcop_sram_dest_t dest, flexcop_sram_dest_target_t target);

drivers/media/dvb/b2c2/flexcop-eeprom.c

@@ -114,15 +114,18 @@ static int flexcop_eeprom_request(struct flexcop_device *fc, flexcop_access_op_t
 {
 	int i,ret = 0;
 	u8 chipaddr =  0x50 | ((addr >> 8) & 3);
-	for (i = 0; i < retries; i++)
-		if ((ret = fc->i2c_request(fc,op,FC_I2C_PORT_EEPROM,chipaddr,addr & 0xff,buf,len)) == 0)
+	for (i = 0; i < retries; i++) {
+		ret = fc->i2c_request(&fc->fc_i2c_adap[1], op, chipaddr,
+			addr & 0xff, buf, len);
+		if (ret == 0)
 			break;
+	}
 	return ret;
 }
 
 static int flexcop_eeprom_lrc_read(struct flexcop_device *fc, u16 addr, u8 *buf, u16 len, int retries)
 {
-	int ret = flexcop_eeprom_request(fc,FC_READ,addr,buf,len,retries);
+	int ret = flexcop_eeprom_request(fc, FC_READ, addr, buf, len, retries);
 	if (ret == 0)
 		if (calc_lrc(buf, len - 1) != buf[len - 1])
 			ret = -EINVAL;

drivers/media/dvb/b2c2/flexcop-fe-tuner.c

@@ -183,13 +183,13 @@ static int samsung_tbmu24112_tuner_set_params(struct dvb_frontend* fe, struct dv
 	buf[2] = 0x84;  /* 0xC4 */
 	buf[3] = 0x08;
 
-	if (params->frequency < 1500000) buf[3] |= 0x10;
+	if (params->frequency < 1500000)
+		buf[3] |= 0x10;
 
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
-	if (i2c_transfer(&fc->i2c_adap, &msg, 1) != 1) {
+	if (i2c_transfer(&fc->fc_i2c_adap[0].i2c_adap, &msg, 1) != 1)
 		return -EIO;
-	}
 	return 0;
 }
 
@@ -340,7 +340,7 @@ static int skystar23_samsung_tbdu18132_tuner_set_params(struct dvb_frontend* fe,
 
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
-	if (i2c_transfer(&fc->i2c_adap, &msg, 1) != 1)
+	if (i2c_transfer(&fc->fc_i2c_adap[0].i2c_adap, &msg, 1) != 1)
 		return -EIO;
 	return 0;
 }
@@ -389,10 +389,11 @@ static int alps_tdee4_stv0297_tuner_set_params(struct dvb_frontend* fe,
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 0);
 	deb_tuner("tuner buffer for %d Hz: %x %x %x %x\n",fep->frequency, buf[0],buf[1],buf[2],buf[3]);
-	ret = fc->i2c_request(fc, FC_WRITE, FC_I2C_PORT_TUNER, 0x61, buf[0], &buf[1], 3);
+	ret = fc->i2c_request(&fc->fc_i2c_adap[2],
+		FC_WRITE, 0x61, buf[0], &buf[1], 3);
 	deb_tuner("tuner write returned: %d\n",ret);
 
-	return 0;
+	return ret;
 }
 
 static u8 alps_tdee4_stv0297_inittab[] = {
@@ -479,53 +480,67 @@ static struct stv0297_config alps_tdee4_stv0297_config = {
 int flexcop_frontend_init(struct flexcop_device *fc)
 {
 	struct dvb_frontend_ops *ops;
+	struct i2c_adapter *i2c = &fc->fc_i2c_adap[0].i2c_adap;
 
 	/* try the sky v2.6 (stv0299/Samsung tbmu24112(sl1935)) */
-	if ((fc->fe = dvb_attach(stv0299_attach, &samsung_tbmu24112_config, &fc->i2c_adap)) != NULL) {
+	fc->fe = dvb_attach(stv0299_attach, &samsung_tbmu24112_config, i2c);
+	if (fc->fe != NULL) {
 		ops = &fc->fe->ops;
 
 		ops->tuner_ops.set_params = samsung_tbmu24112_tuner_set_params;
 
 		ops->set_voltage = flexcop_set_voltage;
 
-		fc->fe_sleep             = ops->sleep;
-		ops->sleep               = flexcop_sleep;
+		fc->fe_sleep = ops->sleep;
+		ops->sleep = flexcop_sleep;
+
+		fc->dev_type = FC_SKY;
+		goto fe_found;
+	}
 
-		fc->dev_type          = FC_SKY;
-		info("found the stv0299 at i2c address: 0x%02x",samsung_tbmu24112_config.demod_address);
-	} else
 	/* try the air dvb-t (mt352/Samsung tdtc9251dh0(??)) */
-	if ((fc->fe = dvb_attach(mt352_attach, &samsung_tdtc9251dh0_config, &fc->i2c_adap)) != NULL ) {
-		fc->dev_type          = FC_AIR_DVB;
+	fc->fe = dvb_attach(mt352_attach, &samsung_tdtc9251dh0_config, i2c);
+	if (fc->fe != NULL) {
+		fc->dev_type = FC_AIR_DVB;
 		fc->fe->ops.tuner_ops.calc_regs = samsung_tdtc9251dh0_calc_regs;
-		info("found the mt352 at i2c address: 0x%02x",samsung_tdtc9251dh0_config.demod_address);
-	} else
+		goto fe_found;
+	}
+
 	/* try the air atsc 2nd generation (nxt2002) */
-	if ((fc->fe = dvb_attach(nxt200x_attach, &samsung_tbmv_config, &fc->i2c_adap)) != NULL) {
-		fc->dev_type          = FC_AIR_ATSC2;
+	fc->fe = dvb_attach(nxt200x_attach, &samsung_tbmv_config, i2c);
+	if (fc->fe != NULL) {
+		fc->dev_type = FC_AIR_ATSC2;
 		dvb_attach(dvb_pll_attach, fc->fe, 0x61, NULL, DVB_PLL_SAMSUNG_TBMV);
-		info("found the nxt2002 at i2c address: 0x%02x",samsung_tbmv_config.demod_address);
-	} else
-	/* try the air atsc 3nd generation (lgdt3303) */
-	if ((fc->fe = dvb_attach(lgdt330x_attach, &air2pc_atsc_hd5000_config, &fc->i2c_adap)) != NULL) {
-		fc->dev_type          = FC_AIR_ATSC3;
-		dvb_attach(simple_tuner_attach, fc->fe,
-			   &fc->i2c_adap, 0x61, TUNER_LG_TDVS_H06XF);
-		info("found the lgdt3303 at i2c address: 0x%02x",air2pc_atsc_hd5000_config.demod_address);
-	} else
+		goto fe_found;
+	}
+
+	fc->fe = dvb_attach(lgdt330x_attach, &air2pc_atsc_hd5000_config, i2c);
+	if (fc->fe != NULL) {
+		fc->dev_type = FC_AIR_ATSC3;
+		dvb_attach(simple_tuner_attach, fc->fe, i2c, 0x61,
+				TUNER_LG_TDVS_H06XF);
+		goto fe_found;
+	}
+
 	/* try the air atsc 1nd generation (bcm3510)/panasonic ct10s */
-	if ((fc->fe = dvb_attach(bcm3510_attach, &air2pc_atsc_first_gen_config, &fc->i2c_adap)) != NULL) {
-		fc->dev_type          = FC_AIR_ATSC1;
-		info("found the bcm3510 at i2c address: 0x%02x",air2pc_atsc_first_gen_config.demod_address);
-	} else
+	fc->fe = dvb_attach(bcm3510_attach, &air2pc_atsc_first_gen_config, i2c);
+	if (fc->fe != NULL) {
+		fc->dev_type = FC_AIR_ATSC1;
+		goto fe_found;
+	}
+
 	/* try the cable dvb (stv0297) */
-	if ((fc->fe = dvb_attach(stv0297_attach, &alps_tdee4_stv0297_config, &fc->i2c_adap)) != NULL) {
-		fc->dev_type                        = FC_CABLE;
+	fc->fe = dvb_attach(stv0297_attach, &alps_tdee4_stv0297_config, i2c);
+	if (fc->fe != NULL) {
+		fc->dev_type = FC_CABLE;
 		fc->fe->ops.tuner_ops.set_params = alps_tdee4_stv0297_tuner_set_params;
-		info("found the stv0297 at i2c address: 0x%02x",alps_tdee4_stv0297_config.demod_address);
-	} else
+		goto fe_found;
+	}
+
 	/* try the sky v2.3 (vp310/Samsung tbdu18132(tsa5059)) */
-	if ((fc->fe = dvb_attach(vp310_mt312_attach, &skystar23_samsung_tbdu18132_config, &fc->i2c_adap)) != NULL) {
+	fc->fe = dvb_attach(vp310_mt312_attach,
+		&skystar23_samsung_tbdu18132_config, i2c);
+	if (fc->fe != NULL) {
 		ops = &fc->fe->ops;
 
 		ops->tuner_ops.set_params = skystar23_samsung_tbdu18132_tuner_set_params;
@@ -539,19 +554,21 @@ int flexcop_frontend_init(struct flexcop_device *fc)
 		ops->sleep                  = flexcop_sleep;
 
 		fc->dev_type                = FC_SKY_OLD;
-		info("found the vp310 (aka mt312) at i2c address: 0x%02x",skystar23_samsung_tbdu18132_config.demod_address);
+		goto fe_found;
 	}
 
-	if (fc->fe == NULL) {
-		err("no frontend driver found for this B2C2/FlexCop adapter");
-		return -ENODEV;
-	} else {
-		if (dvb_register_frontend(&fc->dvb_adapter, fc->fe)) {
-			err("frontend registration failed!");
-			dvb_frontend_detach(fc->fe);
-			fc->fe = NULL;
-			return -EINVAL;
-		}
+	err("no frontend driver found for this B2C2/FlexCop adapter");
+	return -ENODEV;
+
+fe_found:
+	info("found '%s' .", fc->fe->ops.info.name);
+	if (dvb_register_frontend(&fc->dvb_adapter, fc->fe)) {
+		err("frontend registration failed!");
+		ops = &fc->fe->ops;
+		if (ops->release != NULL)
+			ops->release(fc->fe);
+		fc->fe = NULL;
+		return -EINVAL;
 	}
 	fc->init_state |= FC_STATE_FE_INIT;
 	return 0;

drivers/media/dvb/b2c2/flexcop-i2c.c

@@ -9,6 +9,8 @@
 
 #define FC_MAX_I2C_RETRIES 100000
 
+/* #define DUMP_I2C_MESSAGES */
+
 static int flexcop_i2c_operation(struct flexcop_device *fc, flexcop_ibi_value *r100)
 {
 	int i;
@@ -38,30 +40,25 @@ static int flexcop_i2c_operation(struct flexcop_device *fc, flexcop_ibi_value *r
 	return -EREMOTEIO;
 }
 
-static int flexcop_i2c_read4(struct flexcop_device *fc, flexcop_ibi_value r100, u8 *buf)
+static int flexcop_i2c_read4(struct flexcop_i2c_adapter *i2c,
+	flexcop_ibi_value r100, u8 *buf)
 {
 	flexcop_ibi_value r104;
 	int len = r100.tw_sm_c_100.total_bytes, /* remember total_bytes is buflen-1 */
 		ret;
 
-	if ((ret = flexcop_i2c_operation(fc,&r100)) != 0) {
-		/* The Cablestar needs a different kind of i2c-transfer (does not
-		 * support "Repeat Start"):
-		 * wait for the ACK failure,
-		 * and do a subsequent read with the Bit 30 enabled
-		 */
-		r100.tw_sm_c_100.no_base_addr_ack_error = 1;
-		if ((ret = flexcop_i2c_operation(fc,&r100)) != 0) {
-			deb_i2c("no_base_addr read failed. %d\n",ret);
-			return ret;
-		}
+	r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr;
+	ret = flexcop_i2c_operation(i2c->fc, &r100);
+	if (ret != 0) {
+		deb_i2c("read failed. %d\n", ret);
+		return ret;
 	}
 
 	buf[0] = r100.tw_sm_c_100.data1_reg;
 
 	if (len > 0) {
-		r104 = fc->read_ibi_reg(fc,tw_sm_c_104);
-		deb_i2c("read: r100: %08x, r104: %08x\n",r100.raw,r104.raw);
+		r104 = i2c->fc->read_ibi_reg(i2c->fc, tw_sm_c_104);
+		deb_i2c("read: r100: %08x, r104: %08x\n", r100.raw, r104.raw);
 
 		/* there is at least one more byte, otherwise we wouldn't be here */
 		buf[1] = r104.tw_sm_c_104.data2_reg;
@@ -85,17 +82,22 @@ static int flexcop_i2c_write4(struct flexcop_device *fc, flexcop_ibi_value r100,
 	r104.tw_sm_c_104.data3_reg = len > 1 ? buf[2] : 0;
 	r104.tw_sm_c_104.data4_reg = len > 2 ? buf[3] : 0;
 
-	deb_i2c("write: r100: %08x, r104: %08x\n",r100.raw,r104.raw);
+	deb_i2c("write: r100: %08x, r104: %08x\n", r100.raw, r104.raw);
 
 	/* write the additional i2c data before doing the actual i2c operation */
-	fc->write_ibi_reg(fc,tw_sm_c_104,r104);
-	return flexcop_i2c_operation(fc,&r100);
+	fc->write_ibi_reg(fc, tw_sm_c_104, r104);
+	return flexcop_i2c_operation(fc, &r100);
 }
 
-int flexcop_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
-		flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u16 len)
+int flexcop_i2c_request(struct flexcop_i2c_adapter *i2c,
+	flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 {
 	int ret;
+
+#ifdef DUMP_I2C_MESSAGES
+	int i;
+#endif
+
 	u16 bytes_to_transfer;
 	flexcop_ibi_value r100;
 
@@ -103,7 +105,25 @@ int flexcop_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
 	r100.raw = 0;
 	r100.tw_sm_c_100.chipaddr = chipaddr;
 	r100.tw_sm_c_100.twoWS_rw = op;
-	r100.tw_sm_c_100.twoWS_port_reg = port;
+	r100.tw_sm_c_100.twoWS_port_reg = i2c->port;
+
+#ifdef DUMP_I2C_MESSAGES
+	printk(KERN_DEBUG "%d ", i2c->port);
+	if (op == FC_READ)
+		printk("rd(");
+	else
+		printk("wr(");
+
+	printk("%02x): %02x ", chipaddr, addr);
+#endif
+
+	/* in that case addr is the only value ->
+	 * we write it twice as baseaddr and val0
+	 * BBTI is doing it like that for ISL6421 at least */
+	if (i2c->no_base_addr && len == 0 && op == FC_WRITE) {
+		buf = &addr;
+		len = 1;
+	}
 
 	while (len != 0) {
 		bytes_to_transfer = len > 4 ? 4 : len;
@@ -112,9 +132,14 @@ int flexcop_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
 		r100.tw_sm_c_100.baseaddr = addr;
 
 		if (op == FC_READ)
-			ret = flexcop_i2c_read4(fc, r100, buf);
+			ret = flexcop_i2c_read4(i2c, r100, buf);
 		else
-			ret = flexcop_i2c_write4(fc,r100, buf);
+			ret = flexcop_i2c_write4(i2c->fc, r100, buf);
+
+#ifdef DUMP_I2C_MESSAGES
+		for (i = 0; i < bytes_to_transfer; i++)
+			printk("%02x ", buf[i]);
+#endif
 
 		if (ret < 0)
 			return ret;
@@ -122,7 +147,11 @@ int flexcop_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
 		buf  += bytes_to_transfer;
 		addr += bytes_to_transfer;
 		len  -= bytes_to_transfer;
-	};
+	}
+
+#ifdef DUMP_I2C_MESSAGES
+	printk("\n");
+#endif
 
 	return 0;
 }
@@ -132,7 +161,7 @@ EXPORT_SYMBOL(flexcop_i2c_request);
 /* master xfer callback for demodulator */
 static int flexcop_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
 {
-	struct flexcop_device *fc = i2c_get_adapdata(i2c_adap);
+	struct flexcop_i2c_adapter *i2c = i2c_get_adapdata(i2c_adap);
 	int i, ret = 0;
 
 	/* Some drivers use 1 byte or 0 byte reads as probes, which this
@@ -142,34 +171,29 @@ static int flexcop_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs
 	if (num == 1 && msgs[0].flags == I2C_M_RD && msgs[0].len <= 1)
 		return 1;
 
-	if (mutex_lock_interruptible(&fc->i2c_mutex))
+	if (mutex_lock_interruptible(&i2c->fc->i2c_mutex))
 		return -ERESTARTSYS;
 
-	/* reading */
-	if (num == 2 &&
-		msgs[0].flags == 0 &&
-		msgs[1].flags == I2C_M_RD &&
-		msgs[0].buf != NULL &&
-		msgs[1].buf != NULL) {
-
-		ret = fc->i2c_request(fc, FC_READ, FC_I2C_PORT_DEMOD, msgs[0].addr, msgs[0].buf[0], msgs[1].buf, msgs[1].len);
-
-	} else for (i = 0; i < num; i++) { /* writing command */
-		if (msgs[i].flags != 0 || msgs[i].buf == NULL || msgs[i].len < 2) {
-			ret = -EINVAL;
+	for (i = 0; i < num; i++) {
+		/* reading */
+		if (i+1 < num && (msgs[i+1].flags == I2C_M_RD)) {
+			ret = i2c->fc->i2c_request(i2c, FC_READ, msgs[i].addr,
+				msgs[i].buf[0], msgs[i+1].buf, msgs[i+1].len);
+			i++; /* skip the following message */
+		} else /* writing */
+			ret = i2c->fc->i2c_request(i2c, FC_WRITE, msgs[i].addr,
+				msgs[i].buf[0], &msgs[i].buf[1],
+				msgs[i].len - 1);
+		if (ret < 0) {
+			err("i2c master_xfer failed");
 			break;
 		}
-
-		ret = fc->i2c_request(fc, FC_WRITE, FC_I2C_PORT_DEMOD, msgs[i].addr, msgs[i].buf[0], &msgs[i].buf[1], msgs[i].len - 1);
 	}
 
-	if (ret < 0)
-		err("i2c master_xfer failed");
-	else
-		ret = num;
-
-	mutex_unlock(&fc->i2c_mutex);
+	mutex_unlock(&i2c->fc->i2c_mutex);
 
+	if (ret == 0)
+		ret = num;
 	return ret;
 }
 
@@ -189,28 +213,68 @@ int flexcop_i2c_init(struct flexcop_device *fc)
 
 	mutex_init(&fc->i2c_mutex);
 
-	memset(&fc->i2c_adap, 0, sizeof(struct i2c_adapter));
-	strncpy(fc->i2c_adap.name, "B2C2 FlexCop device",
-		sizeof(fc->i2c_adap.name));
-
-	i2c_set_adapdata(&fc->i2c_adap,fc);
+	fc->fc_i2c_adap[0].fc = fc;
+	fc->fc_i2c_adap[1].fc = fc;
+	fc->fc_i2c_adap[2].fc = fc;
+
+	fc->fc_i2c_adap[0].port = FC_I2C_PORT_DEMOD;
+	fc->fc_i2c_adap[1].port = FC_I2C_PORT_EEPROM;
+	fc->fc_i2c_adap[2].port = FC_I2C_PORT_TUNER;
+
+	strncpy(fc->fc_i2c_adap[0].i2c_adap.name,
+		"B2C2 FlexCop I2C to demod", I2C_NAME_SIZE);
+	strncpy(fc->fc_i2c_adap[1].i2c_adap.name,
+		"B2C2 FlexCop I2C to eeprom", I2C_NAME_SIZE);
+	strncpy(fc->fc_i2c_adap[2].i2c_adap.name,
+		"B2C2 FlexCop I2C to tuner", I2C_NAME_SIZE);
+
+	i2c_set_adapdata(&fc->fc_i2c_adap[0].i2c_adap, &fc->fc_i2c_adap[0]);
+	i2c_set_adapdata(&fc->fc_i2c_adap[1].i2c_adap, &fc->fc_i2c_adap[1]);
+	i2c_set_adapdata(&fc->fc_i2c_adap[2].i2c_adap, &fc->fc_i2c_adap[2]);
+
+	fc->fc_i2c_adap[0].i2c_adap.class =
+		fc->fc_i2c_adap[1].i2c_adap.class =
+		fc->fc_i2c_adap[2].i2c_adap.class = I2C_CLASS_TV_DIGITAL;
+	fc->fc_i2c_adap[0].i2c_adap.algo =
+		fc->fc_i2c_adap[1].i2c_adap.algo =
+		fc->fc_i2c_adap[2].i2c_adap.algo = &flexcop_algo;
+	fc->fc_i2c_adap[0].i2c_adap.algo_data =
+		fc->fc_i2c_adap[1].i2c_adap.algo_data =
+		fc->fc_i2c_adap[2].i2c_adap.algo_data = NULL;
+	fc->fc_i2c_adap[0].i2c_adap.dev.parent =
+		fc->fc_i2c_adap[1].i2c_adap.dev.parent =
+		fc->fc_i2c_adap[2].i2c_adap.dev.parent = fc->dev;
+
+	ret = i2c_add_adapter(&fc->fc_i2c_adap[0].i2c_adap);
+	if (ret < 0)
+		return ret;
 
-	fc->i2c_adap.class	    = I2C_CLASS_TV_DIGITAL;
-	fc->i2c_adap.algo       = &flexcop_algo;
-	fc->i2c_adap.algo_data  = NULL;
-	fc->i2c_adap.dev.parent	= fc->dev;
+	ret = i2c_add_adapter(&fc->fc_i2c_adap[1].i2c_adap);
+	if (ret < 0)
+		goto adap_1_failed;
 
-	if ((ret = i2c_add_adapter(&fc->i2c_adap)) < 0)
-		return ret;
+	ret = i2c_add_adapter(&fc->fc_i2c_adap[2].i2c_adap);
+	if (ret < 0)
+		goto adap_2_failed;
 
 	fc->init_state |= FC_STATE_I2C_INIT;
 	return 0;
+
+adap_2_failed:
+	i2c_del_adapter(&fc->fc_i2c_adap[1].i2c_adap);
+adap_1_failed:
+	i2c_del_adapter(&fc->fc_i2c_adap[0].i2c_adap);
+
+	return ret;
 }
 
 void flexcop_i2c_exit(struct flexcop_device *fc)
 {
-	if (fc->init_state & FC_STATE_I2C_INIT)
-		i2c_del_adapter(&fc->i2c_adap);
+	if (fc->init_state & FC_STATE_I2C_INIT) {
+		i2c_del_adapter(&fc->fc_i2c_adap[2].i2c_adap);
+		i2c_del_adapter(&fc->fc_i2c_adap[1].i2c_adap);
+		i2c_del_adapter(&fc->fc_i2c_adap[0].i2c_adap);
+	}
 
 	fc->init_state &= ~FC_STATE_I2C_INIT;
 }

drivers/media/dvb/b2c2/flexcop-usb.c

@@ -211,10 +211,11 @@ static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
 #endif
 
 /* usb i2c stuff */
-static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb,
+static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
 		flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
-		flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
+		u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
 {
+	struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
 	u16 wValue, wIndex;
 	int nWaitTime,pipe,len;
 //	u8 dwRequestType;
@@ -242,7 +243,7 @@ static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb,
 			deb_info("unsupported function for i2c_req %x\n",func);
 			return -EINVAL;
 	}
-	wValue = (func << 8 ) | (port << 4);
+	wValue = (func << 8) | (i2c->port << 4);
 	wIndex = (chipaddr << 8 ) | addr;
 
 	deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req,
@@ -274,13 +275,15 @@ static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_regi
 	return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0);
 }
 
-static int flexcop_usb_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
-		flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u16 len)
+static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
+	flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 {
 	if (op == FC_READ)
-		return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_READ,port,chipaddr,addr,buf,len);
+		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
+			USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
 	else
-		return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_WRITE,port,chipaddr,addr,buf,len);
+		return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
+			USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
 }
 
 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb, u8 *buffer, int buffer_length)

drivers/media/dvb/b2c2/flexcop.c

@@ -257,6 +257,12 @@ int flexcop_device_initialize(struct flexcop_device *fc)
 	if ((ret = flexcop_dvb_init(fc)))
 		goto error;
 
+	/* i2c has to be done before doing EEProm stuff -
+	 * because the EEProm is accessed via i2c */
+	ret = flexcop_i2c_init(fc);
+	if (ret)
+		goto error;
+
 	/* do the MAC address reading after initializing the dvb_adapter */
 	if (fc->get_mac_addr(fc, 0) == 0) {
 		u8 *b = fc->dvb_adapter.proposed_mac;
@@ -266,10 +272,6 @@ int flexcop_device_initialize(struct flexcop_device *fc)
 	} else
 		warn("reading of MAC address failed.\n");
 
-
-	if ((ret = flexcop_i2c_init(fc)))
-		goto error;
-
 	if ((ret = flexcop_frontend_init(fc)))
 		goto error;