Initial import

1 files changed, 1377 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/tda1004x.c b/drivers/media/dvb-frontends/tda1004x.c
new file mode 100644
index 000000000..cfe80e4a9
--- /dev/null
+++ b/drivers/media/dvb-frontends/tda1004x.c
@@ -0,0 +1,1377 @@
+  /*
+     Driver for Philips tda1004xh OFDM Demodulator
+
+     (c) 2003, 2004 Andrew de Quincey & Robert Schlabbach
+
+     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.
+
+   */
+/*(DEBLOBBED)*/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "dvb_frontend.h"
+#include "tda1004x.h"
+
+static int debug;
+#define dprintk(args...) \
+	do { \
+		if (debug) printk(KERN_DEBUG "tda1004x: " args); \
+	} while (0)
+
+#define TDA1004X_CHIPID		 0x00
+#define TDA1004X_AUTO		 0x01
+#define TDA1004X_IN_CONF1	 0x02
+#define TDA1004X_IN_CONF2	 0x03
+#define TDA1004X_OUT_CONF1	 0x04
+#define TDA1004X_OUT_CONF2	 0x05
+#define TDA1004X_STATUS_CD	 0x06
+#define TDA1004X_CONFC4		 0x07
+#define TDA1004X_DSSPARE2	 0x0C
+#define TDA10045H_CODE_IN	 0x0D
+#define TDA10045H_FWPAGE	 0x0E
+#define TDA1004X_SCAN_CPT	 0x10
+#define TDA1004X_DSP_CMD	 0x11
+#define TDA1004X_DSP_ARG	 0x12
+#define TDA1004X_DSP_DATA1	 0x13
+#define TDA1004X_DSP_DATA2	 0x14
+#define TDA1004X_CONFADC1	 0x15
+#define TDA1004X_CONFC1		 0x16
+#define TDA10045H_S_AGC		 0x1a
+#define TDA10046H_AGC_TUN_LEVEL	 0x1a
+#define TDA1004X_SNR		 0x1c
+#define TDA1004X_CONF_TS1	 0x1e
+#define TDA1004X_CONF_TS2	 0x1f
+#define TDA1004X_CBER_RESET	 0x20
+#define TDA1004X_CBER_MSB	 0x21
+#define TDA1004X_CBER_LSB	 0x22
+#define TDA1004X_CVBER_LUT	 0x23
+#define TDA1004X_VBER_MSB	 0x24
+#define TDA1004X_VBER_MID	 0x25
+#define TDA1004X_VBER_LSB	 0x26
+#define TDA1004X_UNCOR		 0x27
+
+#define TDA10045H_CONFPLL_P	 0x2D
+#define TDA10045H_CONFPLL_M_MSB	 0x2E
+#define TDA10045H_CONFPLL_M_LSB	 0x2F
+#define TDA10045H_CONFPLL_N	 0x30
+
+#define TDA10046H_CONFPLL1	 0x2D
+#define TDA10046H_CONFPLL2	 0x2F
+#define TDA10046H_CONFPLL3	 0x30
+#define TDA10046H_TIME_WREF1	 0x31
+#define TDA10046H_TIME_WREF2	 0x32
+#define TDA10046H_TIME_WREF3	 0x33
+#define TDA10046H_TIME_WREF4	 0x34
+#define TDA10046H_TIME_WREF5	 0x35
+
+#define TDA10045H_UNSURW_MSB	 0x31
+#define TDA10045H_UNSURW_LSB	 0x32
+#define TDA10045H_WREF_MSB	 0x33
+#define TDA10045H_WREF_MID	 0x34
+#define TDA10045H_WREF_LSB	 0x35
+#define TDA10045H_MUXOUT	 0x36
+#define TDA1004X_CONFADC2	 0x37
+
+#define TDA10045H_IOFFSET	 0x38
+
+#define TDA10046H_CONF_TRISTATE1 0x3B
+#define TDA10046H_CONF_TRISTATE2 0x3C
+#define TDA10046H_CONF_POLARITY	 0x3D
+#define TDA10046H_FREQ_OFFSET	 0x3E
+#define TDA10046H_GPIO_OUT_SEL	 0x41
+#define TDA10046H_GPIO_SELECT	 0x42
+#define TDA10046H_AGC_CONF	 0x43
+#define TDA10046H_AGC_THR	 0x44
+#define TDA10046H_AGC_RENORM	 0x45
+#define TDA10046H_AGC_GAINS	 0x46
+#define TDA10046H_AGC_TUN_MIN	 0x47
+#define TDA10046H_AGC_TUN_MAX	 0x48
+#define TDA10046H_AGC_IF_MIN	 0x49
+#define TDA10046H_AGC_IF_MAX	 0x4A
+
+#define TDA10046H_FREQ_PHY2_MSB	 0x4D
+#define TDA10046H_FREQ_PHY2_LSB	 0x4E
+
+#define TDA10046H_CVBER_CTRL	 0x4F
+#define TDA10046H_AGC_IF_LEVEL	 0x52
+#define TDA10046H_CODE_CPT	 0x57
+#define TDA10046H_CODE_IN	 0x58
+
+
+static int tda1004x_write_byteI(struct tda1004x_state *state, int reg, int data)
+{
+	int ret;
+	u8 buf[] = { reg, data };
+	struct i2c_msg msg = { .flags = 0, .buf = buf, .len = 2 };
+
+	dprintk("%s: reg=0x%x, data=0x%x\n", __func__, reg, data);
+
+	msg.addr = state->config->demod_address;
+	ret = i2c_transfer(state->i2c, &msg, 1);
+
+	if (ret != 1)
+		dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n",
+			__func__, reg, data, ret);
+
+	dprintk("%s: success reg=0x%x, data=0x%x, ret=%i\n", __func__,
+		reg, data, ret);
+	return (ret != 1) ? -1 : 0;
+}
+
+static int tda1004x_read_byte(struct tda1004x_state *state, int reg)
+{
+	int ret;
+	u8 b0[] = { reg };
+	u8 b1[] = { 0 };
+	struct i2c_msg msg[] = {{ .flags = 0, .buf = b0, .len = 1 },
+				{ .flags = I2C_M_RD, .buf = b1, .len = 1 }};
+
+	dprintk("%s: reg=0x%x\n", __func__, reg);
+
+	msg[0].addr = state->config->demod_address;
+	msg[1].addr = state->config->demod_address;
+	ret = i2c_transfer(state->i2c, msg, 2);
+
+	if (ret != 2) {
+		dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg,
+			ret);
+		return -EINVAL;
+	}
+
+	dprintk("%s: success reg=0x%x, data=0x%x, ret=%i\n", __func__,
+		reg, b1[0], ret);
+	return b1[0];
+}
+
+static int tda1004x_write_mask(struct tda1004x_state *state, int reg, int mask, int data)
+{
+	int val;
+	dprintk("%s: reg=0x%x, mask=0x%x, data=0x%x\n", __func__, reg,
+		mask, data);
+
+	// read a byte and check
+	val = tda1004x_read_byte(state, reg);
+	if (val < 0)
+		return val;
+
+	// mask if off
+	val = val & ~mask;
+	val |= data & 0xff;
+
+	// write it out again
+	return tda1004x_write_byteI(state, reg, val);
+}
+
+static int tda1004x_write_buf(struct tda1004x_state *state, int reg, unsigned char *buf, int len)
+{
+	int i;
+	int result;
+
+	dprintk("%s: reg=0x%x, len=0x%x\n", __func__, reg, len);
+
+	result = 0;
+	for (i = 0; i < len; i++) {
+		result = tda1004x_write_byteI(state, reg + i, buf[i]);
+		if (result != 0)
+			break;
+	}
+
+	return result;
+}
+
+static int tda1004x_enable_tuner_i2c(struct tda1004x_state *state)
+{
+	int result;
+	dprintk("%s\n", __func__);
+
+	result = tda1004x_write_mask(state, TDA1004X_CONFC4, 2, 2);
+	msleep(20);
+	return result;
+}
+
+static int tda1004x_disable_tuner_i2c(struct tda1004x_state *state)
+{
+	dprintk("%s\n", __func__);
+
+	return tda1004x_write_mask(state, TDA1004X_CONFC4, 2, 0);
+}
+
+static int tda10045h_set_bandwidth(struct tda1004x_state *state,
+				   u32 bandwidth)
+{
+	static u8 bandwidth_6mhz[] = { 0x02, 0x00, 0x3d, 0x00, 0x60, 0x1e, 0xa7, 0x45, 0x4f };
+	static u8 bandwidth_7mhz[] = { 0x02, 0x00, 0x37, 0x00, 0x4a, 0x2f, 0x6d, 0x76, 0xdb };
+	static u8 bandwidth_8mhz[] = { 0x02, 0x00, 0x3d, 0x00, 0x48, 0x17, 0x89, 0xc7, 0x14 };
+
+	switch (bandwidth) {
+	case 6000000:
+		tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_6mhz, sizeof(bandwidth_6mhz));
+		break;
+
+	case 7000000:
+		tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_7mhz, sizeof(bandwidth_7mhz));
+		break;
+
+	case 8000000:
+		tda1004x_write_buf(state, TDA10045H_CONFPLL_P, bandwidth_8mhz, sizeof(bandwidth_8mhz));
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	tda1004x_write_byteI(state, TDA10045H_IOFFSET, 0);
+
+	return 0;
+}
+
+static int tda10046h_set_bandwidth(struct tda1004x_state *state,
+				   u32 bandwidth)
+{
+	static u8 bandwidth_6mhz_53M[] = { 0x7b, 0x2e, 0x11, 0xf0, 0xd2 };
+	static u8 bandwidth_7mhz_53M[] = { 0x6a, 0x02, 0x6a, 0x43, 0x9f };
+	static u8 bandwidth_8mhz_53M[] = { 0x5c, 0x32, 0xc2, 0x96, 0x6d };
+
+	static u8 bandwidth_6mhz_48M[] = { 0x70, 0x02, 0x49, 0x24, 0x92 };
+	static u8 bandwidth_7mhz_48M[] = { 0x60, 0x02, 0xaa, 0xaa, 0xab };
+	static u8 bandwidth_8mhz_48M[] = { 0x54, 0x03, 0x0c, 0x30, 0xc3 };
+	int tda10046_clk53m;
+
+	if ((state->config->if_freq == TDA10046_FREQ_045) ||
+	    (state->config->if_freq == TDA10046_FREQ_052))
+		tda10046_clk53m = 0;
+	else
+		tda10046_clk53m = 1;
+	switch (bandwidth) {
+	case 6000000:
+		if (tda10046_clk53m)
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_6mhz_53M,
+						  sizeof(bandwidth_6mhz_53M));
+		else
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_6mhz_48M,
+						  sizeof(bandwidth_6mhz_48M));
+		if (state->config->if_freq == TDA10046_FREQ_045) {
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0a);
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0xab);
+		}
+		break;
+
+	case 7000000:
+		if (tda10046_clk53m)
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_7mhz_53M,
+						  sizeof(bandwidth_7mhz_53M));
+		else
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_7mhz_48M,
+						  sizeof(bandwidth_7mhz_48M));
+		if (state->config->if_freq == TDA10046_FREQ_045) {
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0c);
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x00);
+		}
+		break;
+
+	case 8000000:
+		if (tda10046_clk53m)
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_8mhz_53M,
+						  sizeof(bandwidth_8mhz_53M));
+		else
+			tda1004x_write_buf(state, TDA10046H_TIME_WREF1, bandwidth_8mhz_48M,
+						  sizeof(bandwidth_8mhz_48M));
+		if (state->config->if_freq == TDA10046_FREQ_045) {
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0d);
+			tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x55);
+		}
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int tda1004x_do_upload(struct tda1004x_state *state,
+			      const unsigned char *mem, unsigned int len,
+			      u8 dspCodeCounterReg, u8 dspCodeInReg)
+{
+	u8 buf[65];
+	struct i2c_msg fw_msg = { .flags = 0, .buf = buf, .len = 0 };
+	int tx_size;
+	int pos = 0;
+
+	/* clear code counter */
+	tda1004x_write_byteI(state, dspCodeCounterReg, 0);
+	fw_msg.addr = state->config->demod_address;
+
+	i2c_lock_adapter(state->i2c);
+	buf[0] = dspCodeInReg;
+	while (pos != len) {
+		// work out how much to send this time
+		tx_size = len - pos;
+		if (tx_size > 0x10)
+			tx_size = 0x10;
+
+		// send the chunk
+		memcpy(buf + 1, mem + pos, tx_size);
+		fw_msg.len = tx_size + 1;
+		if (__i2c_transfer(state->i2c, &fw_msg, 1) != 1) {
+			printk(KERN_ERR "tda1004x: Error during firmware upload\n");
+			i2c_unlock_adapter(state->i2c);
+			return -EIO;
+		}
+		pos += tx_size;
+
+		dprintk("%s: fw_pos=0x%x\n", __func__, pos);
+	}
+	i2c_unlock_adapter(state->i2c);
+
+	/* give the DSP a chance to settle 03/10/05 Hac */
+	msleep(100);
+
+	return 0;
+}
+
+static int tda1004x_check_upload_ok(struct tda1004x_state *state)
+{
+	u8 data1, data2;
+	unsigned long timeout;
+
+	if (state->demod_type == TDA1004X_DEMOD_TDA10046) {
+		timeout = jiffies + 2 * HZ;
+		while(!(tda1004x_read_byte(state, TDA1004X_STATUS_CD) & 0x20)) {
+			if (time_after(jiffies, timeout)) {
+				printk(KERN_ERR "tda1004x: timeout waiting for DSP ready\n");
+				break;
+			}
+			msleep(1);
+		}
+	} else
+		msleep(100);
+
+	// check upload was OK
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 0x10, 0); // we want to read from the DSP
+	tda1004x_write_byteI(state, TDA1004X_DSP_CMD, 0x67);
+
+	data1 = tda1004x_read_byte(state, TDA1004X_DSP_DATA1);
+	data2 = tda1004x_read_byte(state, TDA1004X_DSP_DATA2);
+	if (data1 != 0x67 || data2 < 0x20 || data2 > 0x2e) {
+		printk(KERN_INFO "tda1004x: found firmware revision %x -- invalid\n", data2);
+		return -EIO;
+	}
+	printk(KERN_INFO "tda1004x: found firmware revision %x -- ok\n", data2);
+	return 0;
+}
+
+static int tda10045_fwupload(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int ret;
+	const struct firmware *fw;
+
+	/* don't re-upload unless necessary */
+	if (tda1004x_check_upload_ok(state) == 0)
+		return 0;
+
+	/* request the firmware, this will block until someone uploads it */
+	printk(KERN_INFO "tda1004x: waiting for firmware upload (%s)...\n", "/*(DEBLOBBED)*/");
+	ret = state->config->request_firmware(fe, &fw, "/*(DEBLOBBED)*/");
+	if (ret) {
+		printk(KERN_ERR "tda1004x: no firmware upload (timeout or file not found?)\n");
+		return ret;
+	}
+
+	/* reset chip */
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 0x10, 0);
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8);
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 0);
+	msleep(10);
+
+	/* set parameters */
+	tda10045h_set_bandwidth(state, 8000000);
+
+	ret = tda1004x_do_upload(state, fw->data, fw->size, TDA10045H_FWPAGE, TDA10045H_CODE_IN);
+	release_firmware(fw);
+	if (ret)
+		return ret;
+	printk(KERN_INFO "tda1004x: firmware upload complete\n");
+
+	/* wait for DSP to initialise */
+	/* DSPREADY doesn't seem to work on the TDA10045H */
+	msleep(100);
+
+	return tda1004x_check_upload_ok(state);
+}
+
+static void tda10046_init_plls(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tda10046_clk53m;
+
+	if ((state->config->if_freq == TDA10046_FREQ_045) ||
+	    (state->config->if_freq == TDA10046_FREQ_052))
+		tda10046_clk53m = 0;
+	else
+		tda10046_clk53m = 1;
+
+	tda1004x_write_byteI(state, TDA10046H_CONFPLL1, 0xf0);
+	if(tda10046_clk53m) {
+		printk(KERN_INFO "tda1004x: setting up plls for 53MHz sampling clock\n");
+		tda1004x_write_byteI(state, TDA10046H_CONFPLL2, 0x08); // PLL M = 8
+	} else {
+		printk(KERN_INFO "tda1004x: setting up plls for 48MHz sampling clock\n");
+		tda1004x_write_byteI(state, TDA10046H_CONFPLL2, 0x03); // PLL M = 3
+	}
+	if (state->config->xtal_freq == TDA10046_XTAL_4M ) {
+		dprintk("%s: setting up PLLs for a 4 MHz Xtal\n", __func__);
+		tda1004x_write_byteI(state, TDA10046H_CONFPLL3, 0); // PLL P = N = 0
+	} else {
+		dprintk("%s: setting up PLLs for a 16 MHz Xtal\n", __func__);
+		tda1004x_write_byteI(state, TDA10046H_CONFPLL3, 3); // PLL P = 0, N = 3
+	}
+	if(tda10046_clk53m)
+		tda1004x_write_byteI(state, TDA10046H_FREQ_OFFSET, 0x67);
+	else
+		tda1004x_write_byteI(state, TDA10046H_FREQ_OFFSET, 0x72);
+	/* Note clock frequency is handled implicitly */
+	switch (state->config->if_freq) {
+	case TDA10046_FREQ_045:
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0c);
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x00);
+		break;
+	case TDA10046_FREQ_052:
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0x0d);
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0xc7);
+		break;
+	case TDA10046_FREQ_3617:
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0xd7);
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x59);
+		break;
+	case TDA10046_FREQ_3613:
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_MSB, 0xd7);
+		tda1004x_write_byteI(state, TDA10046H_FREQ_PHY2_LSB, 0x3f);
+		break;
+	}
+	tda10046h_set_bandwidth(state, 8000000); /* default bandwidth 8 MHz */
+	/* let the PLLs settle */
+	msleep(120);
+}
+
+static int tda10046_fwupload(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int ret, confc4;
+	const struct firmware *fw;
+
+	/* reset + wake up chip */
+	if (state->config->xtal_freq == TDA10046_XTAL_4M) {
+		confc4 = 0;
+	} else {
+		dprintk("%s: 16MHz Xtal, reducing I2C speed\n", __func__);
+		confc4 = 0x80;
+	}
+	tda1004x_write_byteI(state, TDA1004X_CONFC4, confc4);
+
+	tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 1, 0);
+	/* set GPIO 1 and 3 */
+	if (state->config->gpio_config != TDA10046_GPTRI) {
+		tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE2, 0x33);
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x0f, state->config->gpio_config &0x0f);
+	}
+	/* let the clocks recover from sleep */
+	msleep(10);
+
+	/* The PLLs need to be reprogrammed after sleep */
+	tda10046_init_plls(fe);
+	tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0);
+
+	/* don't re-upload unless necessary */
+	if (tda1004x_check_upload_ok(state) == 0)
+		return 0;
+
+	/*
+	   For i2c normal work, we need to slow down the bus speed.
+	   However, the slow down breaks the eeprom firmware load.
+	   So, use normal speed for eeprom booting and then restore the
+	   i2c speed after that. Tested with MSI TV @nyware A/D board,
+	   that comes with firmware version 29 inside their eeprom.
+
+	   It should also be noticed that no other I2C transfer should
+	   be in course while booting from eeprom, otherwise, tda10046
+	   goes into an instable state. So, proper locking are needed
+	   at the i2c bus master.
+	 */
+	printk(KERN_INFO "tda1004x: trying to boot from eeprom\n");
+	tda1004x_write_byteI(state, TDA1004X_CONFC4, 4);
+	msleep(300);
+	tda1004x_write_byteI(state, TDA1004X_CONFC4, confc4);
+
+	/* Checks if eeprom firmware went without troubles */
+	if (tda1004x_check_upload_ok(state) == 0)
+		return 0;
+
+	/* eeprom firmware didn't work. Load one manually. */
+
+	if (state->config->request_firmware != NULL) {
+		/* request the firmware, this will block until someone uploads it */
+		printk(KERN_INFO "tda1004x: waiting for firmware upload...\n");
+		ret = state->config->request_firmware(fe, &fw, "/*(DEBLOBBED)*/");
+		if (ret) {
+			/* remain compatible to old bug: try to load with tda10045 image name */
+			ret = state->config->request_firmware(fe, &fw, "/*(DEBLOBBED)*/");
+			if (ret) {
+				printk(KERN_ERR "tda1004x: no firmware upload (timeout or file not found?)\n");
+				return ret;
+			} else {
+				printk(KERN_INFO "tda1004x: please rename the firmware file to %s\n",
+						  "/*(DEBLOBBED)*/");
+			}
+		}
+	} else {
+		printk(KERN_ERR "tda1004x: no request function defined, can't upload from file\n");
+		return -EIO;
+	}
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8); // going to boot from HOST
+	ret = tda1004x_do_upload(state, fw->data, fw->size, TDA10046H_CODE_CPT, TDA10046H_CODE_IN);
+	release_firmware(fw);
+	return tda1004x_check_upload_ok(state);
+}
+
+static int tda1004x_encode_fec(int fec)
+{
+	// convert known FEC values
+	switch (fec) {
+	case FEC_1_2:
+		return 0;
+	case FEC_2_3:
+		return 1;
+	case FEC_3_4:
+		return 2;
+	case FEC_5_6:
+		return 3;
+	case FEC_7_8:
+		return 4;
+	}
+
+	// unsupported
+	return -EINVAL;
+}
+
+static int tda1004x_decode_fec(int tdafec)
+{
+	// convert known FEC values
+	switch (tdafec) {
+	case 0:
+		return FEC_1_2;
+	case 1:
+		return FEC_2_3;
+	case 2:
+		return FEC_3_4;
+	case 3:
+		return FEC_5_6;
+	case 4:
+		return FEC_7_8;
+	}
+
+	// unsupported
+	return -1;
+}
+
+static int tda1004x_write(struct dvb_frontend* fe, const u8 buf[], int len)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+
+	if (len != 2)
+		return -EINVAL;
+
+	return tda1004x_write_byteI(state, buf[0], buf[1]);
+}
+
+static int tda10045_init(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+
+	dprintk("%s\n", __func__);
+
+	if (tda10045_fwupload(fe)) {
+		printk("tda1004x: firmware upload failed\n");
+		return -EIO;
+	}
+
+	tda1004x_write_mask(state, TDA1004X_CONFADC1, 0x10, 0); // wake up the ADC
+
+	// tda setup
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 0x20, 0); // disable DSP watchdog timer
+	tda1004x_write_mask(state, TDA1004X_AUTO, 8, 0); // select HP stream
+	tda1004x_write_mask(state, TDA1004X_CONFC1, 0x40, 0); // set polarity of VAGC signal
+	tda1004x_write_mask(state, TDA1004X_CONFC1, 0x80, 0x80); // enable pulse killer
+	tda1004x_write_mask(state, TDA1004X_AUTO, 0x10, 0x10); // enable auto offset
+	tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0xC0, 0x0); // no frequency offset
+	tda1004x_write_byteI(state, TDA1004X_CONF_TS1, 0); // setup MPEG2 TS interface
+	tda1004x_write_byteI(state, TDA1004X_CONF_TS2, 0); // setup MPEG2 TS interface
+	tda1004x_write_mask(state, TDA1004X_VBER_MSB, 0xe0, 0xa0); // 10^6 VBER measurement bits
+	tda1004x_write_mask(state, TDA1004X_CONFC1, 0x10, 0); // VAGC polarity
+	tda1004x_write_byteI(state, TDA1004X_CONFADC1, 0x2e);
+
+	tda1004x_write_mask(state, 0x1f, 0x01, state->config->invert_oclk);
+
+	return 0;
+}
+
+static int tda10046_init(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	dprintk("%s\n", __func__);
+
+	if (tda10046_fwupload(fe)) {
+		printk("tda1004x: firmware upload failed\n");
+			return -EIO;
+	}
+
+	// tda setup
+	tda1004x_write_mask(state, TDA1004X_CONFC4, 0x20, 0); // disable DSP watchdog timer
+	tda1004x_write_byteI(state, TDA1004X_AUTO, 0x87);    // 100 ppm crystal, select HP stream
+	tda1004x_write_byteI(state, TDA1004X_CONFC1, 0x88);      // enable pulse killer
+
+	switch (state->config->agc_config) {
+	case TDA10046_AGC_DEFAULT:
+		tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x00); // AGC setup
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0xf0, 0x60);  // set AGC polarities
+		break;
+	case TDA10046_AGC_IFO_AUTO_NEG:
+		tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x0a); // AGC setup
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0xf0, 0x60);  // set AGC polarities
+		break;
+	case TDA10046_AGC_IFO_AUTO_POS:
+		tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x0a); // AGC setup
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0xf0, 0x00);  // set AGC polarities
+		break;
+	case TDA10046_AGC_TDA827X:
+		tda1004x_write_byteI(state, TDA10046H_AGC_CONF, 0x02);   // AGC setup
+		tda1004x_write_byteI(state, TDA10046H_AGC_THR, 0x70);    // AGC Threshold
+		tda1004x_write_byteI(state, TDA10046H_AGC_RENORM, 0x08); // Gain Renormalize
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0xf0, 0x60);  // set AGC polarities
+		break;
+	}
+	if (state->config->ts_mode == 0) {
+		tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 0xc0, 0x40);
+		tda1004x_write_mask(state, 0x3a, 0x80, state->config->invert_oclk << 7);
+	} else {
+		tda1004x_write_mask(state, TDA10046H_CONF_TRISTATE1, 0xc0, 0x80);
+		tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x10,
+							state->config->invert_oclk << 4);
+	}
+	tda1004x_write_byteI(state, TDA1004X_CONFADC2, 0x38);
+	tda1004x_write_mask (state, TDA10046H_CONF_TRISTATE1, 0x3e, 0x38); // Turn IF AGC output on
+	tda1004x_write_byteI(state, TDA10046H_AGC_TUN_MIN, 0);	  // }
+	tda1004x_write_byteI(state, TDA10046H_AGC_TUN_MAX, 0xff); // } AGC min/max values
+	tda1004x_write_byteI(state, TDA10046H_AGC_IF_MIN, 0);	  // }
+	tda1004x_write_byteI(state, TDA10046H_AGC_IF_MAX, 0xff);  // }
+	tda1004x_write_byteI(state, TDA10046H_AGC_GAINS, 0x12); // IF gain 2, TUN gain 1
+	tda1004x_write_byteI(state, TDA10046H_CVBER_CTRL, 0x1a); // 10^6 VBER measurement bits
+	tda1004x_write_byteI(state, TDA1004X_CONF_TS1, 7); // MPEG2 interface config
+	tda1004x_write_byteI(state, TDA1004X_CONF_TS2, 0xc0); // MPEG2 interface config
+	// tda1004x_write_mask(state, 0x50, 0x80, 0x80);         // handle out of guard echoes
+
+	return 0;
+}
+
+static int tda1004x_set_fe(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache;
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tmp;
+	int inversion;
+
+	dprintk("%s\n", __func__);
+
+	if (state->demod_type == TDA1004X_DEMOD_TDA10046) {
+		// setup auto offset
+		tda1004x_write_mask(state, TDA1004X_AUTO, 0x10, 0x10);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x80, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0xC0, 0);
+
+		// disable agc_conf[2]
+		tda1004x_write_mask(state, TDA10046H_AGC_CONF, 4, 0);
+	}
+
+	// set frequency
+	if (fe->ops.tuner_ops.set_params) {
+		fe->ops.tuner_ops.set_params(fe);
+		if (fe->ops.i2c_gate_ctrl)
+			fe->ops.i2c_gate_ctrl(fe, 0);
+	}
+
+	// Hardcoded to use auto as much as possible on the TDA10045 as it
+	// is very unreliable if AUTO mode is _not_ used.
+	if (state->demod_type == TDA1004X_DEMOD_TDA10045) {
+		fe_params->code_rate_HP = FEC_AUTO;
+		fe_params->guard_interval = GUARD_INTERVAL_AUTO;
+		fe_params->transmission_mode = TRANSMISSION_MODE_AUTO;
+	}
+
+	// Set standard params.. or put them to auto
+	if ((fe_params->code_rate_HP == FEC_AUTO) ||
+		(fe_params->code_rate_LP == FEC_AUTO) ||
+		(fe_params->modulation == QAM_AUTO) ||
+		(fe_params->hierarchy == HIERARCHY_AUTO)) {
+		tda1004x_write_mask(state, TDA1004X_AUTO, 1, 1);	// enable auto
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x03, 0);	/* turn off modulation bits */
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 0);	// turn off hierarchy bits
+		tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0x3f, 0);	// turn off FEC bits
+	} else {
+		tda1004x_write_mask(state, TDA1004X_AUTO, 1, 0);	// disable auto
+
+		// set HP FEC
+		tmp = tda1004x_encode_fec(fe_params->code_rate_HP);
+		if (tmp < 0)
+			return tmp;
+		tda1004x_write_mask(state, TDA1004X_IN_CONF2, 7, tmp);
+
+		// set LP FEC
+		tmp = tda1004x_encode_fec(fe_params->code_rate_LP);
+		if (tmp < 0)
+			return tmp;
+		tda1004x_write_mask(state, TDA1004X_IN_CONF2, 0x38, tmp << 3);
+
+		/* set modulation */
+		switch (fe_params->modulation) {
+		case QPSK:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 0);
+			break;
+
+		case QAM_16:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 1);
+			break;
+
+		case QAM_64:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 3, 2);
+			break;
+
+		default:
+			return -EINVAL;
+		}
+
+		// set hierarchy
+		switch (fe_params->hierarchy) {
+		case HIERARCHY_NONE:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 0 << 5);
+			break;
+
+		case HIERARCHY_1:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 1 << 5);
+			break;
+
+		case HIERARCHY_2:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 2 << 5);
+			break;
+
+		case HIERARCHY_4:
+			tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x60, 3 << 5);
+			break;
+
+		default:
+			return -EINVAL;
+		}
+	}
+
+	// set bandwidth
+	switch (state->demod_type) {
+	case TDA1004X_DEMOD_TDA10045:
+		tda10045h_set_bandwidth(state, fe_params->bandwidth_hz);
+		break;
+
+	case TDA1004X_DEMOD_TDA10046:
+		tda10046h_set_bandwidth(state, fe_params->bandwidth_hz);
+		break;
+	}
+
+	// set inversion
+	inversion = fe_params->inversion;
+	if (state->config->invert)
+		inversion = inversion ? INVERSION_OFF : INVERSION_ON;
+	switch (inversion) {
+	case INVERSION_OFF:
+		tda1004x_write_mask(state, TDA1004X_CONFC1, 0x20, 0);
+		break;
+
+	case INVERSION_ON:
+		tda1004x_write_mask(state, TDA1004X_CONFC1, 0x20, 0x20);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	// set guard interval
+	switch (fe_params->guard_interval) {
+	case GUARD_INTERVAL_1_32:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 0 << 2);
+		break;
+
+	case GUARD_INTERVAL_1_16:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 1 << 2);
+		break;
+
+	case GUARD_INTERVAL_1_8:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 2 << 2);
+		break;
+
+	case GUARD_INTERVAL_1_4:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 2, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 3 << 2);
+		break;
+
+	case GUARD_INTERVAL_AUTO:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 2, 2);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x0c, 0 << 2);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	// set transmission mode
+	switch (fe_params->transmission_mode) {
+	case TRANSMISSION_MODE_2K:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 4, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 0 << 4);
+		break;
+
+	case TRANSMISSION_MODE_8K:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 4, 0);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 1 << 4);
+		break;
+
+	case TRANSMISSION_MODE_AUTO:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 4, 4);
+		tda1004x_write_mask(state, TDA1004X_IN_CONF1, 0x10, 0);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	// start the lock
+	switch (state->demod_type) {
+	case TDA1004X_DEMOD_TDA10045:
+		tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 8);
+		tda1004x_write_mask(state, TDA1004X_CONFC4, 8, 0);
+		break;
+
+	case TDA1004X_DEMOD_TDA10046:
+		tda1004x_write_mask(state, TDA1004X_AUTO, 0x40, 0x40);
+		msleep(1);
+		tda1004x_write_mask(state, TDA10046H_AGC_CONF, 4, 1);
+		break;
+	}
+
+	msleep(10);
+
+	return 0;
+}
+
+static int tda1004x_get_fe(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache;
+	struct tda1004x_state* state = fe->demodulator_priv;
+
+	dprintk("%s\n", __func__);
+
+	// inversion status
+	fe_params->inversion = INVERSION_OFF;
+	if (tda1004x_read_byte(state, TDA1004X_CONFC1) & 0x20)
+		fe_params->inversion = INVERSION_ON;
+	if (state->config->invert)
+		fe_params->inversion = fe_params->inversion ? INVERSION_OFF : INVERSION_ON;
+
+	// bandwidth
+	switch (state->demod_type) {
+	case TDA1004X_DEMOD_TDA10045:
+		switch (tda1004x_read_byte(state, TDA10045H_WREF_LSB)) {
+		case 0x14:
+			fe_params->bandwidth_hz = 8000000;
+			break;
+		case 0xdb:
+			fe_params->bandwidth_hz = 7000000;
+			break;
+		case 0x4f:
+			fe_params->bandwidth_hz = 6000000;
+			break;
+		}
+		break;
+	case TDA1004X_DEMOD_TDA10046:
+		switch (tda1004x_read_byte(state, TDA10046H_TIME_WREF1)) {
+		case 0x5c:
+		case 0x54:
+			fe_params->bandwidth_hz = 8000000;
+			break;
+		case 0x6a:
+		case 0x60:
+			fe_params->bandwidth_hz = 7000000;
+			break;
+		case 0x7b:
+		case 0x70:
+			fe_params->bandwidth_hz = 6000000;
+			break;
+		}
+		break;
+	}
+
+	// FEC
+	fe_params->code_rate_HP =
+	    tda1004x_decode_fec(tda1004x_read_byte(state, TDA1004X_OUT_CONF2) & 7);
+	fe_params->code_rate_LP =
+	    tda1004x_decode_fec((tda1004x_read_byte(state, TDA1004X_OUT_CONF2) >> 3) & 7);
+
+	/* modulation */
+	switch (tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 3) {
+	case 0:
+		fe_params->modulation = QPSK;
+		break;
+	case 1:
+		fe_params->modulation = QAM_16;
+		break;
+	case 2:
+		fe_params->modulation = QAM_64;
+		break;
+	}
+
+	// transmission mode
+	fe_params->transmission_mode = TRANSMISSION_MODE_2K;
+	if (tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x10)
+		fe_params->transmission_mode = TRANSMISSION_MODE_8K;
+
+	// guard interval
+	switch ((tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x0c) >> 2) {
+	case 0:
+		fe_params->guard_interval = GUARD_INTERVAL_1_32;
+		break;
+	case 1:
+		fe_params->guard_interval = GUARD_INTERVAL_1_16;
+		break;
+	case 2:
+		fe_params->guard_interval = GUARD_INTERVAL_1_8;
+		break;
+	case 3:
+		fe_params->guard_interval = GUARD_INTERVAL_1_4;
+		break;
+	}
+
+	// hierarchy
+	switch ((tda1004x_read_byte(state, TDA1004X_OUT_CONF1) & 0x60) >> 5) {
+	case 0:
+		fe_params->hierarchy = HIERARCHY_NONE;
+		break;
+	case 1:
+		fe_params->hierarchy = HIERARCHY_1;
+		break;
+	case 2:
+		fe_params->hierarchy = HIERARCHY_2;
+		break;
+	case 3:
+		fe_params->hierarchy = HIERARCHY_4;
+		break;
+	}
+
+	return 0;
+}
+
+static int tda1004x_read_status(struct dvb_frontend* fe, fe_status_t * fe_status)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int status;
+	int cber;
+	int vber;
+
+	dprintk("%s\n", __func__);
+
+	// read status
+	status = tda1004x_read_byte(state, TDA1004X_STATUS_CD);
+	if (status == -1)
+		return -EIO;
+
+	// decode
+	*fe_status = 0;
+	if (status & 4)
+		*fe_status |= FE_HAS_SIGNAL;
+	if (status & 2)
+		*fe_status |= FE_HAS_CARRIER;
+	if (status & 8)
+		*fe_status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+
+	// if we don't already have VITERBI (i.e. not LOCKED), see if the viterbi
+	// is getting anything valid
+	if (!(*fe_status & FE_HAS_VITERBI)) {
+		// read the CBER
+		cber = tda1004x_read_byte(state, TDA1004X_CBER_LSB);
+		if (cber == -1)
+			return -EIO;
+		status = tda1004x_read_byte(state, TDA1004X_CBER_MSB);
+		if (status == -1)
+			return -EIO;
+		cber |= (status << 8);
+		// The address 0x20 should be read to cope with a TDA10046 bug
+		tda1004x_read_byte(state, TDA1004X_CBER_RESET);
+
+		if (cber != 65535)
+			*fe_status |= FE_HAS_VITERBI;
+	}
+
+	// if we DO have some valid VITERBI output, but don't already have SYNC
+	// bytes (i.e. not LOCKED), see if the RS decoder is getting anything valid.
+	if ((*fe_status & FE_HAS_VITERBI) && (!(*fe_status & FE_HAS_SYNC))) {
+		// read the VBER
+		vber = tda1004x_read_byte(state, TDA1004X_VBER_LSB);
+		if (vber == -1)
+			return -EIO;
+		status = tda1004x_read_byte(state, TDA1004X_VBER_MID);
+		if (status == -1)
+			return -EIO;
+		vber |= (status << 8);
+		status = tda1004x_read_byte(state, TDA1004X_VBER_MSB);
+		if (status == -1)
+			return -EIO;
+		vber |= (status & 0x0f) << 16;
+		// The CVBER_LUT should be read to cope with TDA10046 hardware bug
+		tda1004x_read_byte(state, TDA1004X_CVBER_LUT);
+
+		// if RS has passed some valid TS packets, then we must be
+		// getting some SYNC bytes
+		if (vber < 16632)
+			*fe_status |= FE_HAS_SYNC;
+	}
+
+	// success
+	dprintk("%s: fe_status=0x%x\n", __func__, *fe_status);
+	return 0;
+}
+
+static int tda1004x_read_signal_strength(struct dvb_frontend* fe, u16 * signal)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tmp;
+	int reg = 0;
+
+	dprintk("%s\n", __func__);
+
+	// determine the register to use
+	switch (state->demod_type) {
+	case TDA1004X_DEMOD_TDA10045:
+		reg = TDA10045H_S_AGC;
+		break;
+
+	case TDA1004X_DEMOD_TDA10046:
+		reg = TDA10046H_AGC_IF_LEVEL;
+		break;
+	}
+
+	// read it
+	tmp = tda1004x_read_byte(state, reg);
+	if (tmp < 0)
+		return -EIO;
+
+	*signal = (tmp << 8) | tmp;
+	dprintk("%s: signal=0x%x\n", __func__, *signal);
+	return 0;
+}
+
+static int tda1004x_read_snr(struct dvb_frontend* fe, u16 * snr)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tmp;
+
+	dprintk("%s\n", __func__);
+
+	// read it
+	tmp = tda1004x_read_byte(state, TDA1004X_SNR);
+	if (tmp < 0)
+		return -EIO;
+	tmp = 255 - tmp;
+
+	*snr = ((tmp << 8) | tmp);
+	dprintk("%s: snr=0x%x\n", __func__, *snr);
+	return 0;
+}
+
+static int tda1004x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tmp;
+	int tmp2;
+	int counter;
+
+	dprintk("%s\n", __func__);
+
+	// read the UCBLOCKS and reset
+	counter = 0;
+	tmp = tda1004x_read_byte(state, TDA1004X_UNCOR);
+	if (tmp < 0)
+		return -EIO;
+	tmp &= 0x7f;
+	while (counter++ < 5) {
+		tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0);
+		tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0);
+		tda1004x_write_mask(state, TDA1004X_UNCOR, 0x80, 0);
+
+		tmp2 = tda1004x_read_byte(state, TDA1004X_UNCOR);
+		if (tmp2 < 0)
+			return -EIO;
+		tmp2 &= 0x7f;
+		if ((tmp2 < tmp) || (tmp2 == 0))
+			break;
+	}
+
+	if (tmp != 0x7f)
+		*ucblocks = tmp;
+	else
+		*ucblocks = 0xffffffff;
+
+	dprintk("%s: ucblocks=0x%x\n", __func__, *ucblocks);
+	return 0;
+}
+
+static int tda1004x_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int tmp;
+
+	dprintk("%s\n", __func__);
+
+	// read it in
+	tmp = tda1004x_read_byte(state, TDA1004X_CBER_LSB);
+	if (tmp < 0)
+		return -EIO;
+	*ber = tmp << 1;
+	tmp = tda1004x_read_byte(state, TDA1004X_CBER_MSB);
+	if (tmp < 0)
+		return -EIO;
+	*ber |= (tmp << 9);
+	// The address 0x20 should be read to cope with a TDA10046 bug
+	tda1004x_read_byte(state, TDA1004X_CBER_RESET);
+
+	dprintk("%s: ber=0x%x\n", __func__, *ber);
+	return 0;
+}
+
+static int tda1004x_sleep(struct dvb_frontend* fe)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+	int gpio_conf;
+
+	switch (state->demod_type) {
+	case TDA1004X_DEMOD_TDA10045:
+		tda1004x_write_mask(state, TDA1004X_CONFADC1, 0x10, 0x10);
+		break;
+
+	case TDA1004X_DEMOD_TDA10046:
+		/* set outputs to tristate */
+		tda1004x_write_byteI(state, TDA10046H_CONF_TRISTATE1, 0xff);
+		/* invert GPIO 1 and 3 if desired*/
+		gpio_conf = state->config->gpio_config;
+		if (gpio_conf >= TDA10046_GP00_I)
+			tda1004x_write_mask(state, TDA10046H_CONF_POLARITY, 0x0f,
+							(gpio_conf & 0x0f) ^ 0x0a);
+
+		tda1004x_write_mask(state, TDA1004X_CONFADC2, 0xc0, 0xc0);
+		tda1004x_write_mask(state, TDA1004X_CONFC4, 1, 1);
+		break;
+	}
+
+	return 0;
+}
+
+static int tda1004x_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+	struct tda1004x_state* state = fe->demodulator_priv;
+
+	if (enable) {
+		return tda1004x_enable_tuner_i2c(state);
+	} else {
+		return tda1004x_disable_tuner_i2c(state);
+	}
+}
+
+static int tda1004x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+{
+	fesettings->min_delay_ms = 800;
+	/* Drift compensation makes no sense for DVB-T */
+	fesettings->step_size = 0;
+	fesettings->max_drift = 0;
+	return 0;
+}
+
+static void tda1004x_release(struct dvb_frontend* fe)
+{
+	struct tda1004x_state *state = fe->demodulator_priv;
+	kfree(state);
+}
+
+static struct dvb_frontend_ops tda10045_ops = {
+	.delsys = { SYS_DVBT },
+	.info = {
+		.name = "Philips TDA10045H DVB-T",
+		.frequency_min = 51000000,
+		.frequency_max = 858000000,
+		.frequency_stepsize = 166667,
+		.caps =
+		    FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+		    FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+		    FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+		    FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO
+	},
+
+	.release = tda1004x_release,
+
+	.init = tda10045_init,
+	.sleep = tda1004x_sleep,
+	.write = tda1004x_write,
+	.i2c_gate_ctrl = tda1004x_i2c_gate_ctrl,
+
+	.set_frontend = tda1004x_set_fe,
+	.get_frontend = tda1004x_get_fe,
+	.get_tune_settings = tda1004x_get_tune_settings,
+
+	.read_status = tda1004x_read_status,
+	.read_ber = tda1004x_read_ber,
+	.read_signal_strength = tda1004x_read_signal_strength,
+	.read_snr = tda1004x_read_snr,
+	.read_ucblocks = tda1004x_read_ucblocks,
+};
+
+struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config,
+				     struct i2c_adapter* i2c)
+{
+	struct tda1004x_state *state;
+	int id;
+
+	/* allocate memory for the internal state */
+	state = kzalloc(sizeof(struct tda1004x_state), GFP_KERNEL);
+	if (!state) {
+		printk(KERN_ERR "Can't allocate memory for tda10045 state\n");
+		return NULL;
+	}
+
+	/* setup the state */
+	state->config = config;
+	state->i2c = i2c;
+	state->demod_type = TDA1004X_DEMOD_TDA10045;
+
+	/* check if the demod is there */
+	id = tda1004x_read_byte(state, TDA1004X_CHIPID);
+	if (id < 0) {
+		printk(KERN_ERR "tda10045: chip is not answering. Giving up.\n");
+		kfree(state);
+		return NULL;
+	}
+
+	if (id != 0x25) {
+		printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id);
+		kfree(state);
+		return NULL;
+	}
+
+	/* create dvb_frontend */
+	memcpy(&state->frontend.ops, &tda10045_ops, sizeof(struct dvb_frontend_ops));
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+}
+
+static struct dvb_frontend_ops tda10046_ops = {
+	.delsys = { SYS_DVBT },
+	.info = {
+		.name = "Philips TDA10046H DVB-T",
+		.frequency_min = 51000000,
+		.frequency_max = 858000000,
+		.frequency_stepsize = 166667,
+		.caps =
+		    FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+		    FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+		    FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+		    FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO
+	},
+
+	.release = tda1004x_release,
+
+	.init = tda10046_init,
+	.sleep = tda1004x_sleep,
+	.write = tda1004x_write,
+	.i2c_gate_ctrl = tda1004x_i2c_gate_ctrl,
+
+	.set_frontend = tda1004x_set_fe,
+	.get_frontend = tda1004x_get_fe,
+	.get_tune_settings = tda1004x_get_tune_settings,
+
+	.read_status = tda1004x_read_status,
+	.read_ber = tda1004x_read_ber,
+	.read_signal_strength = tda1004x_read_signal_strength,
+	.read_snr = tda1004x_read_snr,
+	.read_ucblocks = tda1004x_read_ucblocks,
+};
+
+struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
+				     struct i2c_adapter* i2c)
+{
+	struct tda1004x_state *state;
+	int id;
+
+	/* allocate memory for the internal state */
+	state = kzalloc(sizeof(struct tda1004x_state), GFP_KERNEL);
+	if (!state) {
+		printk(KERN_ERR "Can't allocate memory for tda10046 state\n");
+		return NULL;
+	}
+
+	/* setup the state */
+	state->config = config;
+	state->i2c = i2c;
+	state->demod_type = TDA1004X_DEMOD_TDA10046;
+
+	/* check if the demod is there */
+	id = tda1004x_read_byte(state, TDA1004X_CHIPID);
+	if (id < 0) {
+		printk(KERN_ERR "tda10046: chip is not answering. Giving up.\n");
+		kfree(state);
+		return NULL;
+	}
+	if (id != 0x46) {
+		printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id);
+		kfree(state);
+		return NULL;
+	}
+
+	/* create dvb_frontend */
+	memcpy(&state->frontend.ops, &tda10046_ops, sizeof(struct dvb_frontend_ops));
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+}
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Philips TDA10045H & TDA10046H DVB-T Demodulator");
+MODULE_AUTHOR("Andrew de Quincey & Robert Schlabbach");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(tda10045_attach);
+EXPORT_SYMBOL(tda10046_attach);