V4L/DVB (5625): Add support for the AF9005 demodulator from Afatech

Signed-off-by: Luca Olivetti <luca@ventoso.org>
Signed-off-by: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1141 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/af9005.c b/drivers/media/dvb/dvb-usb/af9005.c
new file mode 100644
index 00000000000..7db6eee50e3
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/af9005.c
@@ -0,0 +1,1141 @@
+/* DVB USB compliant Linux driver for the Afatech 9005
+ * USB1.1 DVB-T receiver.
+ *
+ * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
+ *
+ * Thanks to Afatech who kindly provided information.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * see Documentation/dvb/REDME.dvb-usb for more information
+ */
+#include "af9005.h"
+
+/* debug */
+int dvb_usb_af9005_debug;
+module_param_named(debug, dvb_usb_af9005_debug, int, 0644);
+MODULE_PARM_DESC(debug,
+		 "set debugging level (1=info,xfer=2,rc=4,reg=8,i2c=16,fw=32 (or-able))."
+		 DVB_USB_DEBUG_STATUS);
+/* enable obnoxious led */
+int dvb_usb_af9005_led = 1;
+module_param_named(led, dvb_usb_af9005_led, bool, 0644);
+MODULE_PARM_DESC(led, "enable led (default: 1).");
+
+/* eeprom dump */
+int dvb_usb_af9005_dump_eeprom = 0;
+module_param_named(dump_eeprom, dvb_usb_af9005_dump_eeprom, int, 0);
+MODULE_PARM_DESC(dump_eeprom, "dump contents of the eeprom.");
+
+/* remote control decoder */
+int (*rc_decode) (struct dvb_usb_device * d, u8 * data, int len, u32 * event,
+		  int *state);
+void *rc_keys;
+int *rc_keys_size;
+
+u8 regmask[8] = { 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
+
+struct af9005_device_state {
+	u8 sequence;
+	int led_state;
+};
+
+int af9005_usb_generic_rw(struct dvb_usb_device *d, u8 * wbuf, u16 wlen,
+			  u8 * rbuf, u16 rlen, int delay_ms)
+{
+	int actlen, ret = -ENOMEM;
+
+	if (wbuf == NULL || wlen == 0)
+		return -EINVAL;
+
+	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+		return ret;
+
+	deb_xfer(">>> ");
+	debug_dump(wbuf, wlen, deb_xfer);
+
+	ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev,
+						    2), wbuf, wlen,
+			   &actlen, 2000);
+
+	if (ret)
+		err("bulk message failed: %d (%d/%d)", ret, wlen, actlen);
+	else
+		ret = actlen != wlen ? -1 : 0;
+
+	/* an answer is expected, and no error before */
+	if (!ret && rbuf && rlen) {
+		if (delay_ms)
+			msleep(delay_ms);
+
+		ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev,
+							    0x01), rbuf,
+				   rlen, &actlen, 2000);
+
+		if (ret)
+			err("recv bulk message failed: %d", ret);
+		else {
+			deb_xfer("<<< ");
+			debug_dump(rbuf, actlen, deb_xfer);
+		}
+	}
+
+	mutex_unlock(&d->usb_mutex);
+	return ret;
+}
+
+int af9005_usb_generic_write(struct dvb_usb_device *d, u8 * buf, u16 len)
+{
+	return af9005_usb_generic_rw(d, buf, len, NULL, 0, 0);
+}
+
+int af9005_generic_read_write(struct dvb_usb_device *d, u16 reg,
+			      int readwrite, int type, u8 * values, int len)
+{
+	struct af9005_device_state *st = d->priv;
+	u8 obuf[16] = { 0 };
+	u8 ibuf[17] = { 0 };
+	u8 command;
+	int i;
+	int ret;
+
+	if (len < 1) {
+		err("generic read/write, less than 1 byte. Makes no sense.");
+		return -EINVAL;
+	}
+	if (len > 8) {
+		err("generic read/write, more than 8 bytes. Not supported.");
+		return -EINVAL;
+	}
+
+	obuf[0] = 14;		/* rest of buffer length low */
+	obuf[1] = 0;		/* rest of buffer length high */
+
+	obuf[2] = AF9005_REGISTER_RW;	/* register operation */
+	obuf[3] = 12;		/* rest of buffer length */
+
+	obuf[4] = st->sequence++;	/* sequence number */
+
+	obuf[5] = (u8) (reg >> 8);	/* register address */
+	obuf[6] = (u8) (reg & 0xff);
+
+	if (type == AF9005_OFDM_REG) {
+		command = AF9005_CMD_OFDM_REG;
+	} else {
+		command = AF9005_CMD_TUNER;
+	}
+
+	if (len > 1)
+		command |=
+		    AF9005_CMD_BURST | AF9005_CMD_AUTOINC | (len - 1) << 3;
+	command |= readwrite;
+	if (readwrite == AF9005_CMD_WRITE)
+		for (i = 0; i < len; i++)
+			obuf[8 + i] = values[i];
+	else if (type == AF9005_TUNER_REG)
+		/* read command for tuner, the first byte contains the i2c address */
+		obuf[8] = values[0];
+	obuf[7] = command;
+
+	ret = af9005_usb_generic_rw(d, obuf, 16, ibuf, 17, 0);
+	if (ret)
+		return ret;
+
+	/* sanity check */
+	if (ibuf[2] != AF9005_REGISTER_RW_ACK) {
+		err("generic read/write, wrong reply code.");
+		return -EIO;
+	}
+	if (ibuf[3] != 0x0d) {
+		err("generic read/write, wrong length in reply.");
+		return -EIO;
+	}
+	if (ibuf[4] != obuf[4]) {
+		err("generic read/write, wrong sequence in reply.");
+		return -EIO;
+	}
+	/*
+	   Windows driver doesn't check these fields, in fact sometimes
+	   the register in the reply is different that what has been sent
+
+	   if (ibuf[5] != obuf[5] || ibuf[6] != obuf[6]) {
+	   err("generic read/write, wrong register in reply.");
+	   return -EIO;
+	   }
+	   if (ibuf[7] != command) {
+	   err("generic read/write wrong command in reply.");
+	   return -EIO;
+	   }
+	 */
+	if (ibuf[16] != 0x01) {
+		err("generic read/write wrong status code in reply.");
+		return -EIO;
+	}
+	if (readwrite == AF9005_CMD_READ)
+		for (i = 0; i < len; i++)
+			values[i] = ibuf[8 + i];
+
+	return 0;
+
+}
+
+int af9005_read_ofdm_register(struct dvb_usb_device *d, u16 reg, u8 * value)
+{
+	int ret;
+	deb_reg("read register %x ", reg);
+	ret = af9005_generic_read_write(d, reg,
+					AF9005_CMD_READ, AF9005_OFDM_REG,
+					value, 1);
+	if (ret)
+		deb_reg("failed\n");
+	else
+		deb_reg("value %x\n", *value);
+	return ret;
+}
+
+int af9005_read_ofdm_registers(struct dvb_usb_device *d, u16 reg,
+			       u8 * values, int len)
+{
+	int ret;
+	deb_reg("read %d registers %x ", len, reg);
+	ret = af9005_generic_read_write(d, reg,
+					AF9005_CMD_READ, AF9005_OFDM_REG,
+					values, len);
+	if (ret)
+		deb_reg("failed\n");
+	else
+		debug_dump(values, len, deb_reg);
+	return ret;
+}
+
+int af9005_write_ofdm_register(struct dvb_usb_device *d, u16 reg, u8 value)
+{
+	int ret;
+	u8 temp = value;
+	deb_reg("write register %x value %x ", reg, value);
+	ret = af9005_generic_read_write(d, reg,
+					AF9005_CMD_WRITE, AF9005_OFDM_REG,
+					&temp, 1);
+	if (ret)
+		deb_reg("failed\n");
+	else
+		deb_reg("ok\n");
+	return ret;
+}
+
+int af9005_write_ofdm_registers(struct dvb_usb_device *d, u16 reg,
+				u8 * values, int len)
+{
+	int ret;
+	deb_reg("write %d registers %x values ", len, reg);
+	debug_dump(values, len, deb_reg);
+
+	ret = af9005_generic_read_write(d, reg,
+					AF9005_CMD_WRITE, AF9005_OFDM_REG,
+					values, len);
+	if (ret)
+		deb_reg("failed\n");
+	else
+		deb_reg("ok\n");
+	return ret;
+}
+
+int af9005_read_register_bits(struct dvb_usb_device *d, u16 reg, u8 pos,
+			      u8 len, u8 * value)
+{
+	u8 temp;
+	int ret;
+	deb_reg("read bits %x %x %x", reg, pos, len);
+	ret = af9005_read_ofdm_register(d, reg, &temp);
+	if (ret) {
+		deb_reg(" failed\n");
+		return ret;
+	}
+	*value = (temp >> pos) & regmask[len - 1];
+	deb_reg(" value %x\n", *value);
+	return 0;
+
+}
+
+int af9005_write_register_bits(struct dvb_usb_device *d, u16 reg, u8 pos,
+			       u8 len, u8 value)
+{
+	u8 temp, mask;
+	int ret;
+	deb_reg("write bits %x %x %x value %x\n", reg, pos, len, value);
+	if (pos == 0 && len == 8)
+		return af9005_write_ofdm_register(d, reg, value);
+	ret = af9005_read_ofdm_register(d, reg, &temp);
+	if (ret)
+		return ret;
+	mask = regmask[len - 1] << pos;
+	temp = (temp & ~mask) | ((value << pos) & mask);
+	return af9005_write_ofdm_register(d, reg, temp);
+
+}
+
+static int af9005_usb_read_tuner_registers(struct dvb_usb_device *d,
+					   u16 reg, u8 * values, int len)
+{
+	return af9005_generic_read_write(d, reg,
+					 AF9005_CMD_READ, AF9005_TUNER_REG,
+					 values, len);
+}
+
+static int af9005_usb_write_tuner_registers(struct dvb_usb_device *d,
+					    u16 reg, u8 * values, int len)
+{
+	return af9005_generic_read_write(d, reg,
+					 AF9005_CMD_WRITE,
+					 AF9005_TUNER_REG, values, len);
+}
+
+int af9005_write_tuner_registers(struct dvb_usb_device *d, u16 reg,
+				 u8 * values, int len)
+{
+	/* don't let the name of this function mislead you: it's just used
+	   as an interface from the firmware to the i2c bus. The actual
+	   i2c addresses are contained in the data */
+	int ret, i, done = 0, fail = 0;
+	u8 temp;
+	ret = af9005_usb_write_tuner_registers(d, reg, values, len);
+	if (ret)
+		return ret;
+	if (reg != 0xffff) {
+		/* check if write done (0xa40d bit 1) or fail (0xa40d bit 2) */
+		for (i = 0; i < 200; i++) {
+			ret =
+			    af9005_read_ofdm_register(d,
+						      xd_I2C_i2c_m_status_wdat_done,
+						      &temp);
+			if (ret)
+				return ret;
+			done = temp & (regmask[i2c_m_status_wdat_done_len - 1]
+				       << i2c_m_status_wdat_done_pos);
+			if (done)
+				break;
+			fail = temp & (regmask[i2c_m_status_wdat_fail_len - 1]
+				       << i2c_m_status_wdat_fail_pos);
+			if (fail)
+				break;
+			msleep(50);
+		}
+		if (i == 200)
+			return -ETIMEDOUT;
+		if (fail) {
+			/* clear write fail bit */
+			af9005_write_register_bits(d,
+						   xd_I2C_i2c_m_status_wdat_fail,
+						   i2c_m_status_wdat_fail_pos,
+						   i2c_m_status_wdat_fail_len,
+						   1);
+			return -EIO;
+		}
+		/* clear write done bit */
+		ret =
+		    af9005_write_register_bits(d,
+					       xd_I2C_i2c_m_status_wdat_fail,
+					       i2c_m_status_wdat_done_pos,
+					       i2c_m_status_wdat_done_len, 1);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+int af9005_read_tuner_registers(struct dvb_usb_device *d, u16 reg, u8 addr,
+				u8 * values, int len)
+{
+	/* don't let the name of this function mislead you: it's just used
+	   as an interface from the firmware to the i2c bus. The actual
+	   i2c addresses are contained in the data */
+	int ret, i;
+	u8 temp, buf[2];
+
+	buf[0] = addr;		/* tuner i2c address */
+	buf[1] = values[0];	/* tuner register */
+
+	values[0] = addr + 0x01;	/* i2c read address */
+
+	if (reg == APO_REG_I2C_RW_SILICON_TUNER) {
+		/* write tuner i2c address to tuner, 0c00c0 undocumented, found by sniffing */
+		ret = af9005_write_tuner_registers(d, 0x00c0, buf, 2);
+		if (ret)
+			return ret;
+	}
+
+	/* send read command to ofsm */
+	ret = af9005_usb_read_tuner_registers(d, reg, values, 1);
+	if (ret)
+		return ret;
+
+	/* check if read done */
+	for (i = 0; i < 200; i++) {
+		ret = af9005_read_ofdm_register(d, 0xa408, &temp);
+		if (ret)
+			return ret;
+		if (temp & 0x01)
+			break;
+		msleep(50);
+	}
+	if (i == 200)
+		return -ETIMEDOUT;
+
+	/* clear read done bit (by writing 1) */
+	ret = af9005_write_ofdm_register(d, xd_I2C_i2c_m_data8, 1);
+	if (ret)
+		return ret;
+
+	/* get read data (available from 0xa400) */
+	for (i = 0; i < len; i++) {
+		ret = af9005_read_ofdm_register(d, 0xa400 + i, &temp);
+		if (ret)
+			return ret;
+		values[i] = temp;
+	}
+	return 0;
+}
+
+static int af9005_i2c_write(struct dvb_usb_device *d, u8 i2caddr, u8 reg,
+			    u8 * data, int len)
+{
+	int ret, i;
+	u8 buf[3];
+	deb_i2c("i2c_write i2caddr %x, reg %x, len %d data ", i2caddr,
+		reg, len);
+	debug_dump(data, len, deb_i2c);
+
+	for (i = 0; i < len; i++) {
+		buf[0] = i2caddr;
+		buf[1] = reg + (u8) i;
+		buf[2] = data[i];
+		ret =
+		    af9005_write_tuner_registers(d,
+						 APO_REG_I2C_RW_SILICON_TUNER,
+						 buf, 3);
+		if (ret) {
+			deb_i2c("i2c_write failed\n");
+			return ret;
+		}
+	}
+	deb_i2c("i2c_write ok\n");
+	return 0;
+}
+
+static int af9005_i2c_read(struct dvb_usb_device *d, u8 i2caddr, u8 reg,
+			   u8 * data, int len)
+{
+	int ret, i;
+	u8 temp;
+	deb_i2c("i2c_read i2caddr %x, reg %x, len %d\n ", i2caddr, reg, len);
+	for (i = 0; i < len; i++) {
+		temp = reg + i;
+		ret =
+		    af9005_read_tuner_registers(d,
+						APO_REG_I2C_RW_SILICON_TUNER,
+						i2caddr, &temp, 1);
+		if (ret) {
+			deb_i2c("i2c_read failed\n");
+			return ret;
+		}
+		data[i] = temp;
+	}
+	deb_i2c("i2c data read: ");
+	debug_dump(data, len, deb_i2c);
+	return 0;
+}
+
+static int af9005_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
+			   int num)
+{
+	/* only implements what the mt2060 module does, don't know how
+	   to make it really generic */
+	struct dvb_usb_device *d = i2c_get_adapdata(adap);
+	int ret;
+	u8 reg, addr;
+	u8 *value;
+
+	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+		return -EAGAIN;
+
+	if (num > 2)
+		warn("more than 2 i2c messages at a time is not handled yet. TODO.");
+
+	if (num == 2) {
+		/* reads a single register */
+		reg = *msg[0].buf;
+		addr = msg[0].addr;
+		value = msg[1].buf;
+		ret = af9005_i2c_read(d, addr, reg, value, 1);
+		if (ret == 0)
+			ret = 2;
+	} else {
+		/* write one or more registers */
+		reg = msg[0].buf[0];
+		addr = msg[0].addr;
+		value = &msg[0].buf[1];
+		ret = af9005_i2c_write(d, addr, reg, value, msg[0].len - 1);
+		if (ret == 0)
+			ret = 1;
+	}
+
+	mutex_unlock(&d->i2c_mutex);
+	return ret;
+}
+
+static u32 af9005_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm af9005_i2c_algo = {
+	.master_xfer = af9005_i2c_xfer,
+	.functionality = af9005_i2c_func,
+};
+
+int af9005_send_command(struct dvb_usb_device *d, u8 command, u8 * wbuf,
+			int wlen, u8 * rbuf, int rlen)
+{
+	struct af9005_device_state *st = d->priv;
+
+	int ret, i, packet_len;
+	u8 buf[64];
+	u8 ibuf[64];
+
+	if (wlen < 0) {
+		err("send command, wlen less than 0 bytes. Makes no sense.");
+		return -EINVAL;
+	}
+	if (wlen > 54) {
+		err("send command, wlen more than 54 bytes. Not supported.");
+		return -EINVAL;
+	}
+	if (rlen > 54) {
+		err("send command, rlen more than 54 bytes. Not supported.");
+		return -EINVAL;
+	}
+	packet_len = wlen + 5;
+	buf[0] = (u8) (packet_len & 0xff);
+	buf[1] = (u8) ((packet_len & 0xff00) >> 8);
+
+	buf[2] = 0x26;		/* packet type */
+	buf[3] = wlen + 3;
+	buf[4] = st->sequence++;
+	buf[5] = command;
+	buf[6] = wlen;
+	for (i = 0; i < wlen; i++)
+		buf[7 + i] = wbuf[i];
+	ret = af9005_usb_generic_rw(d, buf, wlen + 7, ibuf, rlen + 7, 0);
+	if (ret)
+		return ret;
+	if (ibuf[2] != 0x27) {
+		err("send command, wrong reply code.");
+		return -EIO;
+	}
+	if (ibuf[4] != buf[4]) {
+		err("send command, wrong sequence in reply.");
+		return -EIO;
+	}
+	if (ibuf[5] != 0x01) {
+		err("send command, wrong status code in reply.");
+		return -EIO;
+	}
+	if (ibuf[6] != rlen) {
+		err("send command, invalid data length in reply.");
+		return -EIO;
+	}
+	for (i = 0; i < rlen; i++)
+		rbuf[i] = ibuf[i + 7];
+	return 0;
+}
+
+int af9005_read_eeprom(struct dvb_usb_device *d, u8 address, u8 * values,
+		       int len)
+{
+	struct af9005_device_state *st = d->priv;
+	u8 obuf[16], ibuf[14];
+	int ret, i;
+
+	memset(obuf, 0, sizeof(obuf));
+	memset(ibuf, 0, sizeof(ibuf));
+
+	obuf[0] = 14;		/* length of rest of packet low */
+	obuf[1] = 0;		/* length of rest of packer high */
+
+	obuf[2] = 0x2a;		/* read/write eeprom */
+
+	obuf[3] = 12;		/* size */
+
+	obuf[4] = st->sequence++;
+
+	obuf[5] = 0;		/* read */
+
+	obuf[6] = len;
+	obuf[7] = address;
+	ret = af9005_usb_generic_rw(d, obuf, 16, ibuf, 14, 0);
+	if (ret)
+		return ret;
+	if (ibuf[2] != 0x2b) {
+		err("Read eeprom, invalid reply code");
+		return -EIO;
+	}
+	if (ibuf[3] != 10) {
+		err("Read eeprom, invalid reply length");
+		return -EIO;
+	}
+	if (ibuf[4] != obuf[4]) {
+		err("Read eeprom, wrong sequence in reply ");
+		return -EIO;
+	}
+	if (ibuf[5] != 1) {
+		err("Read eeprom, wrong status in reply ");
+		return -EIO;
+	}
+	for (i = 0; i < len; i++) {
+		values[i] = ibuf[6 + i];
+	}
+	return 0;
+}
+
+static int af9005_boot_packet(struct usb_device *udev, int type, u8 * reply)
+{
+	u8 buf[FW_BULKOUT_SIZE + 2];
+	u16 checksum;
+	int act_len, i, ret;
+	memset(buf, 0, sizeof(buf));
+	buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);
+	buf[1] = (u8) ((FW_BULKOUT_SIZE >> 8) & 0xff);
+	switch (type) {
+	case FW_CONFIG:
+		buf[2] = 0x11;
+		buf[3] = 0x04;
+		buf[4] = 0x00;	/* sequence number, original driver doesn't increment it here */
+		buf[5] = 0x03;
+		checksum = buf[4] + buf[5];
+		buf[6] = (u8) ((checksum >> 8) & 0xff);
+		buf[7] = (u8) (checksum & 0xff);
+		break;
+	case FW_CONFIRM:
+		buf[2] = 0x11;
+		buf[3] = 0x04;
+		buf[4] = 0x00;	/* sequence number, original driver doesn't increment it here */
+		buf[5] = 0x01;
+		checksum = buf[4] + buf[5];
+		buf[6] = (u8) ((checksum >> 8) & 0xff);
+		buf[7] = (u8) (checksum & 0xff);
+		break;
+	case FW_BOOT:
+		buf[2] = 0x10;
+		buf[3] = 0x08;
+		buf[4] = 0x00;	/* sequence number, original driver doesn't increment it here */
+		buf[5] = 0x97;
+		buf[6] = 0xaa;
+		buf[7] = 0x55;
+		buf[8] = 0xa5;
+		buf[9] = 0x5a;
+		checksum = 0;
+		for (i = 4; i <= 9; i++)
+			checksum += buf[i];
+		buf[10] = (u8) ((checksum >> 8) & 0xff);
+		buf[11] = (u8) (checksum & 0xff);
+		break;
+	default:
+		err("boot packet invalid boot packet type");
+		return -EINVAL;
+	}
+	deb_fw(">>> ");
+	debug_dump(buf, FW_BULKOUT_SIZE + 2, deb_fw);
+
+	ret = usb_bulk_msg(udev,
+			   usb_sndbulkpipe(udev, 0x02),
+			   buf, FW_BULKOUT_SIZE + 2, &act_len, 2000);
+	if (ret)
+		err("boot packet bulk message failed: %d (%d/%d)", ret,
+		    FW_BULKOUT_SIZE + 2, act_len);
+	else
+		ret = act_len != FW_BULKOUT_SIZE + 2 ? -1 : 0;
+	if (ret)
+		return ret;
+	memset(buf, 0, 9);
+	ret = usb_bulk_msg(udev,
+			   usb_rcvbulkpipe(udev, 0x01), buf, 9, &act_len, 2000);
+	if (ret) {
+		err("boot packet recv bulk message failed: %d", ret);
+		return ret;
+	}
+	deb_fw("<<< ");
+	debug_dump(buf, act_len, deb_fw);
+	checksum = 0;
+	switch (type) {
+	case FW_CONFIG:
+		if (buf[2] != 0x11) {
+			err("boot bad config header.");
+			return -EIO;
+		}
+		if (buf[3] != 0x05) {
+			err("boot bad config size.");
+			return -EIO;
+		}
+		if (buf[4] != 0x00) {
+			err("boot bad config sequence.");
+			return -EIO;
+		}
+		if (buf[5] != 0x04) {
+			err("boot bad config subtype.");
+			return -EIO;
+		}
+		for (i = 4; i <= 6; i++)
+			checksum += buf[i];
+		if (buf[7] * 256 + buf[8] != checksum) {
+			err("boot bad config checksum.");
+			return -EIO;
+		}
+		*reply = buf[6];
+		break;
+	case FW_CONFIRM:
+		if (buf[2] != 0x11) {
+			err("boot bad confirm header.");
+			return -EIO;
+		}
+		if (buf[3] != 0x05) {
+			err("boot bad confirm size.");
+			return -EIO;
+		}
+		if (buf[4] != 0x00) {
+			err("boot bad confirm sequence.");
+			return -EIO;
+		}
+		if (buf[5] != 0x02) {
+			err("boot bad confirm subtype.");
+			return -EIO;
+		}
+		for (i = 4; i <= 6; i++)
+			checksum += buf[i];
+		if (buf[7] * 256 + buf[8] != checksum) {
+			err("boot bad confirm checksum.");
+			return -EIO;
+		}
+		*reply = buf[6];
+		break;
+	case FW_BOOT:
+		if (buf[2] != 0x10) {
+			err("boot bad boot header.");
+			return -EIO;
+		}
+		if (buf[3] != 0x05) {
+			err("boot bad boot size.");
+			return -EIO;
+		}
+		if (buf[4] != 0x00) {
+			err("boot bad boot sequence.");
+			return -EIO;
+		}
+		if (buf[5] != 0x01) {
+			err("boot bad boot pattern 01.");
+			return -EIO;
+		}
+		if (buf[6] != 0x10) {
+			err("boot bad boot pattern 10.");
+			return -EIO;
+		}
+		for (i = 4; i <= 6; i++)
+			checksum += buf[i];
+		if (buf[7] * 256 + buf[8] != checksum) {
+			err("boot bad boot checksum.");
+			return -EIO;
+		}
+		break;
+
+	}
+
+	return 0;
+}
+
+int af9005_download_firmware(struct usb_device *udev, const struct firmware *fw)
+{
+	int i, packets, ret, act_len;
+
+	u8 buf[FW_BULKOUT_SIZE + 2];
+	u8 reply;
+
+	ret = af9005_boot_packet(udev, FW_CONFIG, &reply);
+	if (ret)
+		return ret;
+	if (reply != 0x01) {
+		err("before downloading firmware, FW_CONFIG expected 0x01, received 0x%x", reply);
+		return -EIO;
+	}
+	packets = fw->size / FW_BULKOUT_SIZE;
+	buf[0] = (u8) (FW_BULKOUT_SIZE & 0xff);
+	buf[1] = (u8) ((FW_BULKOUT_SIZE >> 8) & 0xff);
+	for (i = 0; i < packets; i++) {
+		memcpy(&buf[2], fw->data + i * FW_BULKOUT_SIZE,
+		       FW_BULKOUT_SIZE);
+		deb_fw(">>> ");
+		debug_dump(buf, FW_BULKOUT_SIZE + 2, deb_fw);
+		ret = usb_bulk_msg(udev,
+				   usb_sndbulkpipe(udev, 0x02),
+				   buf, FW_BULKOUT_SIZE + 2, &act_len, 1000);
+		if (ret) {
+			err("firmware download failed at packet %d with code %d", i, ret);
+			return ret;
+		}
+	}
+	ret = af9005_boot_packet(udev, FW_CONFIRM, &reply);
+	if (ret)
+		return ret;
+	if (reply != (u8) (packets & 0xff)) {
+		err("after downloading firmware, FW_CONFIRM expected 0x%x, received 0x%x", packets & 0xff, reply);
+		return -EIO;
+	}
+	ret = af9005_boot_packet(udev, FW_BOOT, &reply);
+	if (ret)
+		return ret;
+	ret = af9005_boot_packet(udev, FW_CONFIG, &reply);
+	if (ret)
+		return ret;
+	if (reply != 0x02) {
+		err("after downloading firmware, FW_CONFIG expected 0x02, received 0x%x", reply);
+		return -EIO;
+	}
+
+	return 0;
+
+}
+
+int af9005_led_control(struct dvb_usb_device *d, int onoff)
+{
+	struct af9005_device_state *st = d->priv;
+	int temp, ret;
+
+	if (onoff && dvb_usb_af9005_led)
+		temp = 1;
+	else
+		temp = 0;
+	if (st->led_state != temp) {
+		ret =
+		    af9005_write_register_bits(d, xd_p_reg_top_locken1,
+					       reg_top_locken1_pos,
+					       reg_top_locken1_len, temp);
+		if (ret)
+			return ret;
+		ret =
+		    af9005_write_register_bits(d, xd_p_reg_top_lock1,
+					       reg_top_lock1_pos,
+					       reg_top_lock1_len, temp);
+		if (ret)
+			return ret;
+		st->led_state = temp;
+	}
+	return 0;
+}
+
+static int af9005_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	u8 buf[8];
+	int i;
+
+	/* without these calls the first commands after downloading
+	   the firmware fail. I put these calls here to simulate
+	   what it is done in dvb-usb-init.c.
+	 */
+	struct usb_device *udev = adap->dev->udev;
+	usb_clear_halt(udev, usb_sndbulkpipe(udev, 2));
+	usb_clear_halt(udev, usb_rcvbulkpipe(udev, 1));
+	if (dvb_usb_af9005_dump_eeprom) {
+		printk("EEPROM DUMP\n");
+		for (i = 0; i < 255; i += 8) {
+			af9005_read_eeprom(adap->dev, i, buf, 8);
+			printk("ADDR %x ", i);
+			debug_dump(buf, 8, printk);
+		}
+	}
+	adap->fe = af9005_fe_attach(adap->dev);
+	return 0;
+}
+
+static int af9005_rc_query(struct dvb_usb_device *d, u32 * event, int *state)
+{
+	struct af9005_device_state *st = d->priv;
+	int ret, len;
+
+	u8 obuf[5];
+	u8 ibuf[256];
+
+	*state = REMOTE_NO_KEY_PRESSED;
+	if (rc_decode == NULL) {
+		/* it shouldn't never come here */
+		return 0;
+	}
+	/* deb_info("rc_query\n"); */
+	obuf[0] = 3;		/* rest of packet length low */
+	obuf[1] = 0;		/* rest of packet lentgh high */
+	obuf[2] = 0x40;		/* read remote */
+	obuf[3] = 1;		/* rest of packet length */
+	obuf[4] = st->sequence++;	/* sequence number */
+	ret = af9005_usb_generic_rw(d, obuf, 5, ibuf, 256, 0);
+	if (ret) {
+		err("rc query failed");
+		return ret;
+	}
+	if (ibuf[2] != 0x41) {
+		err("rc query bad header.");
+		return -EIO;
+	}
+	if (ibuf[4] != obuf[4]) {
+		err("rc query bad sequence.");
+		return -EIO;
+	}
+	len = ibuf[5];
+	if (len > 246) {
+		err("rc query invalid length");
+		return -EIO;
+	}
+	if (len > 0) {
+		deb_rc("rc data (%d) ", len);
+		debug_dump((ibuf + 6), len, deb_rc);
+		ret = rc_decode(d, &ibuf[6], len, event, state);
+		if (ret) {
+			err("rc_decode failed");
+			return ret;
+		} else {
+			deb_rc("rc_decode state %x event %x\n", *state, *event);
+			if (*state == REMOTE_KEY_REPEAT)
+				*event = d->last_event;
+		}
+	}
+	return 0;
+}
+
+static int af9005_power_ctrl(struct dvb_usb_device *d, int onoff)
+{
+
+	return 0;
+}
+
+static int af9005_pid_filter_control(struct dvb_usb_adapter *adap, int onoff)
+{
+	int ret;
+	deb_info("pid filter control  onoff %d\n", onoff);
+	if (onoff) {
+		ret =
+		    af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 1);
+		if (ret)
+			return ret;
+		ret =
+		    af9005_write_register_bits(adap->dev,
+					       XD_MP2IF_DMX_CTRL, 1, 1, 1);
+		if (ret)
+			return ret;
+		ret =
+		    af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 1);
+	} else
+		ret =
+		    af9005_write_ofdm_register(adap->dev, XD_MP2IF_DMX_CTRL, 0);
+	if (ret)
+		return ret;
+	deb_info("pid filter control ok\n");
+	return 0;
+}
+
+static int af9005_pid_filter(struct dvb_usb_adapter *adap, int index,
+			     u16 pid, int onoff)
+{
+	u8 cmd = index & 0x1f;
+	int ret;
+	deb_info("set pid filter, index %d, pid %x, onoff %d\n", index,
+		 pid, onoff);
+	if (onoff) {
+		/* cannot use it as pid_filter_ctrl since it has to be done
+		   before setting the first pid */
+		if (adap->feedcount == 1) {
+			deb_info("first pid set, enable pid table\n");
+			ret = af9005_pid_filter_control(adap, onoff);
+			if (ret)
+				return ret;
+		}
+		ret =
+		    af9005_write_ofdm_register(adap->dev,
+					       XD_MP2IF_PID_DATA_L,
+					       (u8) (pid & 0xff));
+		if (ret)
+			return ret;
+		ret =
+		    af9005_write_ofdm_register(adap->dev,
+					       XD_MP2IF_PID_DATA_H,
+					       (u8) (pid >> 8));
+		if (ret)
+			return ret;
+		cmd |= 0x20 | 0x40;
+	} else {
+		if (adap->feedcount == 0) {
+			deb_info("last pid unset, disable pid table\n");
+			ret = af9005_pid_filter_control(adap, onoff);
+			if (ret)
+				return ret;
+		}
+	}
+	ret = af9005_write_ofdm_register(adap->dev, XD_MP2IF_PID_IDX, cmd);
+	if (ret)
+		return ret;
+	deb_info("set pid ok\n");
+	return 0;
+}
+
+static int af9005_identify_state(struct usb_device *udev,
+				 struct dvb_usb_device_properties *props,
+				 struct dvb_usb_device_description **desc,
+				 int *cold)
+{
+	int ret;
+	u8 reply;
+	ret = af9005_boot_packet(udev, FW_CONFIG, &reply);
+	if (ret)
+		return ret;
+	deb_info("result of FW_CONFIG in identify state %d\n", reply);
+	if (reply == 0x01)
+		*cold = 1;
+	else if (reply == 0x02)
+		*cold = 0;
+	else
+		return -EIO;
+	deb_info("Identify state cold = %d\n", *cold);
+	return 0;
+}
+
+static struct dvb_usb_device_properties af9005_properties;
+
+static int af9005_usb_probe(struct usb_interface *intf,
+			    const struct usb_device_id *id)
+{
+	return dvb_usb_device_init(intf, &af9005_properties, THIS_MODULE, NULL);
+}
+
+static struct usb_device_id af9005_usb_table[] = {
+	{USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9005)},
+	{USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_USB_XE)},
+	{0},
+};
+
+MODULE_DEVICE_TABLE(usb, af9005_usb_table);
+
+static struct dvb_usb_device_properties af9005_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+	.usb_ctrl = DEVICE_SPECIFIC,
+	.firmware = "af9005.fw",
+	.download_firmware = af9005_download_firmware,
+	.no_reconnect = 1,
+
+	.size_of_priv = sizeof(struct af9005_device_state),
+
+	.num_adapters = 1,
+	.adapter = {
+		    {
+		     .caps =
+		     DVB_USB_ADAP_HAS_PID_FILTER |
+		     DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
+		     .pid_filter_count = 32,
+		     .pid_filter = af9005_pid_filter,
+		     /* .pid_filter_ctrl = af9005_pid_filter_control, */
+		     .frontend_attach = af9005_frontend_attach,
+		     /* .tuner_attach     = af9005_tuner_attach, */
+		     /* parameter for the MPEG2-data transfer */
+		     .stream = {
+				.type = USB_BULK,
+				.count = 10,
+				.endpoint = 0x04,
+				.u = {
+				      .bulk = {
+					       .buffersize = 4096,	/* actual size seen is 3948 */
+					       }
+				      }
+				},
+		     }
+		    },
+	.power_ctrl = af9005_power_ctrl,
+	.identify_state = af9005_identify_state,
+
+	.i2c_algo = &af9005_i2c_algo,
+
+	.rc_interval = 200,
+	.rc_key_map = NULL,
+	.rc_key_map_size = 0,
+	.rc_query = af9005_rc_query,
+
+	.num_device_descs = 2,
+	.devices = {
+		    {.name = "Afatech DVB-T USB1.1 stick",
+		     .cold_ids = {&af9005_usb_table[0], NULL},
+		     .warm_ids = {NULL},
+		     },
+		    {.name = "TerraTec Cinergy T USB XE",
+		     .cold_ids = {&af9005_usb_table[1], NULL},
+		     .warm_ids = {NULL},
+		     },
+		    {NULL},
+		    }
+};
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver af9005_usb_driver = {
+	.name = "dvb_usb_af9005",
+	.probe = af9005_usb_probe,
+	.disconnect = dvb_usb_device_exit,
+	.id_table = af9005_usb_table,
+};
+
+/* module stuff */
+static int __init af9005_usb_module_init(void)
+{
+	int result;
+	if ((result = usb_register(&af9005_usb_driver))) {
+		err("usb_register failed. (%d)", result);
+		return result;
+	}
+	rc_decode = symbol_request(af9005_rc_decode);
+	rc_keys = symbol_request(af9005_rc_keys);
+	rc_keys_size = symbol_request(af9005_rc_keys_size);
+	if (rc_decode == NULL || rc_keys == NULL || rc_keys_size == NULL) {
+		err("af9005_rc_decode function not found, disabling remote");
+		af9005_properties.rc_query = NULL;
+	} else {
+		af9005_properties.rc_key_map = rc_keys;
+		af9005_properties.rc_key_map_size = *rc_keys_size;
+	}
+
+	return 0;
+}
+
+static void __exit af9005_usb_module_exit(void)
+{
+	/* release rc decode symbols */
+	if (rc_decode != NULL)
+		symbol_put(af9005_rc_decode);
+	if (rc_keys != NULL)
+		symbol_put(af9005_rc_keys);
+	if (rc_keys_size != NULL)
+		symbol_put(af9005_rc_keys_size);
+	/* deregister this driver from the USB subsystem */
+	usb_deregister(&af9005_usb_driver);
+}
+
+module_init(af9005_usb_module_init);
+module_exit(af9005_usb_module_exit);
+
+MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
+MODULE_DESCRIPTION("Driver for Afatech 9005 DVB-T USB1.1 stick");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");