Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1089 insertions, 0 deletions

diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c
new file mode 100644
index 000000000000..eac83768dfd0
--- /dev/null
+++ b/drivers/media/dvb/bt8xx/dst.c
@@ -0,0 +1,1089 @@
+/*
+    Frontend-driver for TwinHan DST Frontend
+
+    Copyright (C) 2003 Jamie Honan
+
+    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.
+
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <asm/div64.h>
+
+#include "dvb_frontend.h"
+#include "dst_priv.h"
+#include "dst.h"
+
+struct dst_state {
+
+	struct i2c_adapter* i2c;
+
+	struct bt878* bt;
+
+	struct dvb_frontend_ops ops;
+
+	/* configuration settings */
+	const struct dst_config* config;
+
+	struct dvb_frontend frontend;
+
+	/* private demodulator data */
+	u8 tx_tuna[10];
+	u8 rx_tuna[10];
+	u8 rxbuffer[10];
+	u8 diseq_flags;
+	u8 dst_type;
+	u32 type_flags;
+	u32 frequency;		/* intermediate frequency in kHz for QPSK */
+	fe_spectral_inversion_t inversion;
+	u32 symbol_rate;	/* symbol rate in Symbols per second */
+	fe_code_rate_t fec;
+	fe_sec_voltage_t voltage;
+	fe_sec_tone_mode_t tone;
+	u32 decode_freq;
+	u8 decode_lock;
+	u16 decode_strength;
+	u16 decode_snr;
+	unsigned long cur_jiff;
+	u8 k22;
+	fe_bandwidth_t bandwidth;
+};
+
+static unsigned int dst_verbose = 0;
+module_param(dst_verbose, int, 0644);
+MODULE_PARM_DESC(dst_verbose, "verbose startup messages, default is 1 (yes)");
+static unsigned int dst_debug = 0;
+module_param(dst_debug, int, 0644);
+MODULE_PARM_DESC(dst_debug, "debug messages, default is 0 (no)");
+
+#define dprintk	if (dst_debug) printk
+
+#define DST_TYPE_IS_SAT		0
+#define DST_TYPE_IS_TERR	1
+#define DST_TYPE_IS_CABLE	2
+
+#define DST_TYPE_HAS_NEWTUNE	1
+#define DST_TYPE_HAS_TS204	2
+#define DST_TYPE_HAS_SYMDIV	4
+
+#define HAS_LOCK	1
+#define ATTEMPT_TUNE	2
+#define HAS_POWER	4
+
+static void dst_packsize(struct dst_state* state, int psize)
+{
+	union dst_gpio_packet bits;
+
+	bits.psize = psize;
+	bt878_device_control(state->bt, DST_IG_TS, &bits);
+}
+
+static int dst_gpio_outb(struct dst_state* state, u32 mask, u32 enbb, u32 outhigh)
+{
+	union dst_gpio_packet enb;
+	union dst_gpio_packet bits;
+	int err;
+
+	enb.enb.mask = mask;
+	enb.enb.enable = enbb;
+	if ((err = bt878_device_control(state->bt, DST_IG_ENABLE, &enb)) < 0) {
+		dprintk("%s: dst_gpio_enb error (err == %i, mask == 0x%02x, enb == 0x%02x)\n", __FUNCTION__, err, mask, enbb);
+		return -EREMOTEIO;
+	}
+
+	/* because complete disabling means no output, no need to do output packet */
+	if (enbb == 0)
+		return 0;
+
+	bits.outp.mask = enbb;
+	bits.outp.highvals = outhigh;
+
+	if ((err = bt878_device_control(state->bt, DST_IG_WRITE, &bits)) < 0) {
+		dprintk("%s: dst_gpio_outb error (err == %i, enbb == 0x%02x, outhigh == 0x%02x)\n", __FUNCTION__, err, enbb, outhigh);
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static int dst_gpio_inb(struct dst_state *state, u8 * result)
+{
+	union dst_gpio_packet rd_packet;
+	int err;
+
+	*result = 0;
+
+	if ((err = bt878_device_control(state->bt, DST_IG_READ, &rd_packet)) < 0) {
+		dprintk("%s: dst_gpio_inb error (err == %i)\n", __FUNCTION__, err);
+		return -EREMOTEIO;
+	}
+
+	*result = (u8) rd_packet.rd.value;
+	return 0;
+}
+
+#define DST_I2C_ENABLE	1
+#define DST_8820	2
+
+static int dst_reset8820(struct dst_state *state)
+{
+	int retval;
+	/* pull 8820 gpio pin low, wait, high, wait, then low */
+	// dprintk ("%s: reset 8820\n", __FUNCTION__);
+	retval = dst_gpio_outb(state, DST_8820, DST_8820, 0);
+	if (retval < 0)
+		return retval;
+	msleep(10);
+	retval = dst_gpio_outb(state, DST_8820, DST_8820, DST_8820);
+	if (retval < 0)
+		return retval;
+	/* wait for more feedback on what works here *
+	   msleep(10);
+	   retval = dst_gpio_outb(dst, DST_8820, DST_8820, 0);
+	   if (retval < 0)
+	   return retval;
+	 */
+	return 0;
+}
+
+static int dst_i2c_enable(struct dst_state *state)
+{
+	int retval;
+	/* pull I2C enable gpio pin low, wait */
+	// dprintk ("%s: i2c enable\n", __FUNCTION__);
+	retval = dst_gpio_outb(state, ~0, DST_I2C_ENABLE, 0);
+	if (retval < 0)
+		return retval;
+	// dprintk ("%s: i2c enable delay\n", __FUNCTION__);
+	msleep(33);
+	return 0;
+}
+
+static int dst_i2c_disable(struct dst_state *state)
+{
+	int retval;
+	/* release I2C enable gpio pin, wait */
+	// dprintk ("%s: i2c disable\n", __FUNCTION__);
+	retval = dst_gpio_outb(state, ~0, 0, 0);
+	if (retval < 0)
+		return retval;
+	// dprintk ("%s: i2c disable delay\n", __FUNCTION__);
+	msleep(33);
+	return 0;
+}
+
+static int dst_wait_dst_ready(struct dst_state *state)
+{
+	u8 reply;
+	int retval;
+	int i;
+	for (i = 0; i < 200; i++) {
+		retval = dst_gpio_inb(state, &reply);
+		if (retval < 0)
+			return retval;
+		if ((reply & DST_I2C_ENABLE) == 0) {
+			dprintk("%s: dst wait ready after %d\n", __FUNCTION__, i);
+			return 1;
+		}
+		msleep(10);
+	}
+	dprintk("%s: dst wait NOT ready after %d\n", __FUNCTION__, i);
+	return 0;
+}
+
+static int write_dst(struct dst_state *state, u8 * data, u8 len)
+{
+	struct i2c_msg msg = {
+		.addr = state->config->demod_address,.flags = 0,.buf = data,.len = len
+	};
+	int err;
+	int cnt;
+
+	if (dst_debug && dst_verbose) {
+		u8 i;
+		dprintk("%s writing", __FUNCTION__);
+		for (i = 0; i < len; i++) {
+			dprintk(" 0x%02x", data[i]);
+		}
+		dprintk("\n");
+	}
+	msleep(30);
+	for (cnt = 0; cnt < 4; cnt++) {
+		if ((err = i2c_transfer(state->i2c, &msg, 1)) < 0) {
+			dprintk("%s: write_dst error (err == %i, len == 0x%02x, b0 == 0x%02x)\n", __FUNCTION__, err, len, data[0]);
+			dst_i2c_disable(state);
+			msleep(500);
+			dst_i2c_enable(state);
+			msleep(500);
+			continue;
+		} else
+			break;
+	}
+	if (cnt >= 4)
+		return -EREMOTEIO;
+	return 0;
+}
+
+static int read_dst(struct dst_state *state, u8 * ret, u8 len)
+{
+	struct i2c_msg msg = {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = ret,.len = len };
+	int err;
+	int cnt;
+
+	for (cnt = 0; cnt < 4; cnt++) {
+		if ((err = i2c_transfer(state->i2c, &msg, 1)) < 0) {
+			dprintk("%s: read_dst error (err == %i, len == 0x%02x, b0 == 0x%02x)\n", __FUNCTION__, err, len, ret[0]);
+			dst_i2c_disable(state);
+			dst_i2c_enable(state);
+			continue;
+		} else
+			break;
+	}
+	if (cnt >= 4)
+		return -EREMOTEIO;
+	dprintk("%s reply is 0x%x\n", __FUNCTION__, ret[0]);
+	if (dst_debug && dst_verbose) {
+		for (err = 1; err < len; err++)
+			dprintk(" 0x%x", ret[err]);
+		if (err > 1)
+			dprintk("\n");
+	}
+	return 0;
+}
+
+static int dst_set_freq(struct dst_state *state, u32 freq)
+{
+	u8 *val;
+
+	state->frequency = freq;
+
+	// dprintk("%s: set frequency %u\n", __FUNCTION__, freq);
+	if (state->dst_type == DST_TYPE_IS_SAT) {
+		freq = freq / 1000;
+		if (freq < 950 || freq > 2150)
+			return -EINVAL;
+		val = &state->tx_tuna[0];
+		val[2] = (freq >> 8) & 0x7f;
+		val[3] = (u8) freq;
+		val[4] = 1;
+		val[8] &= ~4;
+		if (freq < 1531)
+			val[8] |= 4;
+	} else if (state->dst_type == DST_TYPE_IS_TERR) {
+		freq = freq / 1000;
+		if (freq < 137000 || freq > 858000)
+			return -EINVAL;
+		val = &state->tx_tuna[0];
+		val[2] = (freq >> 16) & 0xff;
+		val[3] = (freq >> 8) & 0xff;
+		val[4] = (u8) freq;
+		val[5] = 0;
+		switch (state->bandwidth) {
+		case BANDWIDTH_6_MHZ:
+			val[6] = 6;
+			break;
+
+		case BANDWIDTH_7_MHZ:
+		case BANDWIDTH_AUTO:
+			val[6] = 7;
+			break;
+
+		case BANDWIDTH_8_MHZ:
+			val[6] = 8;
+			break;
+		}
+
+		val[7] = 0;
+		val[8] = 0;
+	} else if (state->dst_type == DST_TYPE_IS_CABLE) {
+		/* guess till will get one */
+		freq = freq / 1000;
+		val = &state->tx_tuna[0];
+		val[2] = (freq >> 16) & 0xff;
+		val[3] = (freq >> 8) & 0xff;
+		val[4] = (u8) freq;
+	} else
+		return -EINVAL;
+	return 0;
+}
+
+static int dst_set_bandwidth(struct dst_state* state, fe_bandwidth_t bandwidth)
+{
+	u8 *val;
+
+	state->bandwidth = bandwidth;
+
+	if (state->dst_type != DST_TYPE_IS_TERR)
+		return 0;
+
+	val = &state->tx_tuna[0];
+	switch (bandwidth) {
+	case BANDWIDTH_6_MHZ:
+		val[6] = 6;
+		break;
+
+	case BANDWIDTH_7_MHZ:
+		val[6] = 7;
+		break;
+
+	case BANDWIDTH_8_MHZ:
+		val[6] = 8;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int dst_set_inversion(struct dst_state* state, fe_spectral_inversion_t inversion)
+{
+	u8 *val;
+
+	state->inversion = inversion;
+
+	val = &state->tx_tuna[0];
+
+	val[8] &= ~0x80;
+
+	switch (inversion) {
+	case INVERSION_OFF:
+		break;
+	case INVERSION_ON:
+		val[8] |= 0x80;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int dst_set_fec(struct dst_state* state, fe_code_rate_t fec)
+{
+	state->fec = fec;
+	return 0;
+}
+
+static fe_code_rate_t dst_get_fec(struct dst_state* state)
+{
+	return state->fec;
+}
+
+static int dst_set_symbolrate(struct dst_state* state, u32 srate)
+{
+	u8 *val;
+	u32 symcalc;
+	u64 sval;
+
+	state->symbol_rate = srate;
+
+	if (state->dst_type == DST_TYPE_IS_TERR) {
+		return 0;
+	}
+	// dprintk("%s: set srate %u\n", __FUNCTION__, srate);
+	srate /= 1000;
+	val = &state->tx_tuna[0];
+
+	if (state->type_flags & DST_TYPE_HAS_SYMDIV) {
+		sval = srate;
+		sval <<= 20;
+		do_div(sval, 88000);
+		symcalc = (u32) sval;
+		// dprintk("%s: set symcalc %u\n", __FUNCTION__, symcalc);
+		val[5] = (u8) (symcalc >> 12);
+		val[6] = (u8) (symcalc >> 4);
+		val[7] = (u8) (symcalc << 4);
+	} else {
+		val[5] = (u8) (srate >> 16) & 0x7f;
+		val[6] = (u8) (srate >> 8);
+		val[7] = (u8) srate;
+	}
+	val[8] &= ~0x20;
+	if (srate > 8000)
+		val[8] |= 0x20;
+	return 0;
+}
+
+static u8 dst_check_sum(u8 * buf, u32 len)
+{
+	u32 i;
+	u8 val = 0;
+	if (!len)
+		return 0;
+	for (i = 0; i < len; i++) {
+		val += buf[i];
+	}
+	return ((~val) + 1);
+}
+
+struct dst_types {
+	char *mstr;
+	int offs;
+	u8 dst_type;
+	u32 type_flags;
+};
+
+static struct dst_types dst_tlist[] = {
+	{"DST-020", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV},
+	{"DST-030", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_TS204 | DST_TYPE_HAS_NEWTUNE},
+	{"DST-03T", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV | DST_TYPE_HAS_TS204},
+	{"DST-MOT", 0, DST_TYPE_IS_SAT, DST_TYPE_HAS_SYMDIV},
+	{"DST-CI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_TS204 | DST_TYPE_HAS_NEWTUNE},
+	{"DSTMCI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_NEWTUNE},
+	{"DSTFCI",  1, DST_TYPE_IS_SAT, DST_TYPE_HAS_NEWTUNE},
+	{"DCTNEW",  1, DST_TYPE_IS_CABLE, DST_TYPE_HAS_NEWTUNE},
+	{"DCT-CI",  1, DST_TYPE_IS_CABLE, DST_TYPE_HAS_NEWTUNE | DST_TYPE_HAS_TS204},
+	{"DTTDIG",  1, DST_TYPE_IS_TERR, 0}
+};
+
+/* DCTNEW and DCT-CI are guesses */
+
+static void dst_type_flags_print(u32 type_flags)
+{
+	printk("DST type flags :");
+	if (type_flags & DST_TYPE_HAS_NEWTUNE)
+		printk(" 0x%x newtuner", DST_TYPE_HAS_NEWTUNE);
+	if (type_flags & DST_TYPE_HAS_TS204)
+		printk(" 0x%x ts204", DST_TYPE_HAS_TS204);
+	if (type_flags & DST_TYPE_HAS_SYMDIV)
+		printk(" 0x%x symdiv", DST_TYPE_HAS_SYMDIV);
+	printk("\n");
+}
+
+static int dst_type_print(u8 type)
+{
+	char *otype;
+	switch (type) {
+	case DST_TYPE_IS_SAT:
+		otype = "satellite";
+		break;
+	case DST_TYPE_IS_TERR:
+		otype = "terrestrial";
+		break;
+	case DST_TYPE_IS_CABLE:
+		otype = "cable";
+		break;
+	default:
+		printk("%s: invalid dst type %d\n", __FUNCTION__, type);
+		return -EINVAL;
+	}
+	printk("DST type : %s\n", otype);
+	return 0;
+}
+
+static int dst_check_ci(struct dst_state *state)
+{
+	u8 txbuf[8];
+	u8 rxbuf[8];
+	int retval;
+	int i;
+	struct dst_types *dsp;
+	u8 use_dst_type;
+	u32 use_type_flags;
+
+	memset(txbuf, 0, sizeof(txbuf));
+	txbuf[1] = 6;
+	txbuf[7] = dst_check_sum(txbuf, 7);
+
+	dst_i2c_enable(state);
+	dst_reset8820(state);
+	retval = write_dst(state, txbuf, 8);
+	if (retval < 0) {
+		dst_i2c_disable(state);
+		dprintk("%s: write not successful, maybe no card?\n", __FUNCTION__);
+		return retval;
+	}
+	msleep(3);
+	retval = read_dst(state, rxbuf, 1);
+	dst_i2c_disable(state);
+	if (retval < 0) {
+		dprintk("%s: read not successful, maybe no card?\n", __FUNCTION__);
+		return retval;
+	}
+	if (rxbuf[0] != 0xff) {
+		dprintk("%s: write reply not 0xff, not ci (%02x)\n", __FUNCTION__, rxbuf[0]);
+		return retval;
+	}
+	if (!dst_wait_dst_ready(state))
+		return 0;
+	// dst_i2c_enable(i2c); Dimitri
+	retval = read_dst(state, rxbuf, 8);
+	dst_i2c_disable(state);
+	if (retval < 0) {
+		dprintk("%s: read not successful\n", __FUNCTION__);
+		return retval;
+	}
+	if (rxbuf[7] != dst_check_sum(rxbuf, 7)) {
+		dprintk("%s: checksum failure\n", __FUNCTION__);
+		return retval;
+	}
+	rxbuf[7] = '\0';
+	for (i = 0, dsp = &dst_tlist[0]; i < sizeof(dst_tlist) / sizeof(dst_tlist[0]); i++, dsp++) {
+		if (!strncmp(&rxbuf[dsp->offs], dsp->mstr, strlen(dsp->mstr))) {
+			use_type_flags = dsp->type_flags;
+			use_dst_type = dsp->dst_type;
+			printk("%s: recognize %s\n", __FUNCTION__, dsp->mstr);
+			break;
+		}
+	}
+	if (i >= sizeof(dst_tlist) / sizeof(dst_tlist[0])) {
+		printk("%s: unable to recognize %s or %s\n", __FUNCTION__, &rxbuf[0], &rxbuf[1]);
+		printk("%s please email linux-dvb@linuxtv.org with this type in\n", __FUNCTION__);
+		use_dst_type = DST_TYPE_IS_SAT;
+		use_type_flags = DST_TYPE_HAS_SYMDIV;
+	}
+	dst_type_print(use_dst_type);
+
+	state->type_flags = use_type_flags;
+	state->dst_type = use_dst_type;
+	dst_type_flags_print(state->type_flags);
+
+	if (state->type_flags & DST_TYPE_HAS_TS204) {
+		dst_packsize(state, 204);
+	}
+	return 0;
+}
+
+static int dst_command(struct dst_state* state, u8 * data, u8 len)
+{
+	int retval;
+	u8 reply;
+
+	dst_i2c_enable(state);
+	dst_reset8820(state);
+	retval = write_dst(state, data, len);
+	if (retval < 0) {
+		dst_i2c_disable(state);
+		dprintk("%s: write not successful\n", __FUNCTION__);
+		return retval;
+	}
+	msleep(33);
+	retval = read_dst(state, &reply, 1);
+	dst_i2c_disable(state);
+	if (retval < 0) {
+		dprintk("%s: read verify  not successful\n", __FUNCTION__);
+		return retval;
+	}
+	if (reply != 0xff) {
+		dprintk("%s: write reply not 0xff 0x%02x \n", __FUNCTION__, reply);
+		return 0;
+	}
+	if (len >= 2 && data[0] == 0 && (data[1] == 1 || data[1] == 3))
+		return 0;
+	if (!dst_wait_dst_ready(state))
+		return 0;
+	// dst_i2c_enable(i2c); Per dimitri
+	retval = read_dst(state, state->rxbuffer, 8);
+	dst_i2c_disable(state);
+	if (retval < 0) {
+		dprintk("%s: read not successful\n", __FUNCTION__);
+		return 0;
+	}
+	if (state->rxbuffer[7] != dst_check_sum(state->rxbuffer, 7)) {
+		dprintk("%s: checksum failure\n", __FUNCTION__);
+		return 0;
+	}
+	return 0;
+}
+
+static int dst_get_signal(struct dst_state* state)
+{
+	int retval;
+	u8 get_signal[] = { 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb };
+
+	if ((state->diseq_flags & ATTEMPT_TUNE) == 0) {
+		state->decode_lock = state->decode_strength = state->decode_snr = 0;
+		return 0;
+	}
+	if (0 == (state->diseq_flags & HAS_LOCK)) {
+		state->decode_lock = state->decode_strength = state->decode_snr = 0;
+		return 0;
+	}
+	if (time_after_eq(jiffies, state->cur_jiff + (HZ / 5))) {
+		retval = dst_command(state, get_signal, 8);
+		if (retval < 0)
+			return retval;
+		if (state->dst_type == DST_TYPE_IS_SAT) {
+			state->decode_lock = ((state->rxbuffer[6] & 0x10) == 0) ? 1 : 0;
+			state->decode_strength = state->rxbuffer[5] << 8;
+			state->decode_snr = state->rxbuffer[2] << 8 | state->rxbuffer[3];
+		} else if ((state->dst_type == DST_TYPE_IS_TERR) || (state->dst_type == DST_TYPE_IS_CABLE)) {
+			state->decode_lock = (state->rxbuffer[1]) ? 1 : 0;
+			state->decode_strength = state->rxbuffer[4] << 8;
+			state->decode_snr = state->rxbuffer[3] << 8;
+		}
+		state->cur_jiff = jiffies;
+	}
+	return 0;
+}
+
+static int dst_tone_power_cmd(struct dst_state* state)
+{
+	u8 paket[8] = { 0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00 };
+
+	if (state->dst_type == DST_TYPE_IS_TERR)
+		return 0;
+
+	if (state->voltage == SEC_VOLTAGE_OFF)
+		paket[4] = 0;
+	else
+		paket[4] = 1;
+	if (state->tone == SEC_TONE_ON)
+		paket[2] = state->k22;
+	else
+		paket[2] = 0;
+	paket[7] = dst_check_sum(&paket[0], 7);
+	dst_command(state, paket, 8);
+	return 0;
+}
+
+static int dst_get_tuna(struct dst_state* state)
+{
+	int retval;
+	if ((state->diseq_flags & ATTEMPT_TUNE) == 0)
+		return 0;
+	state->diseq_flags &= ~(HAS_LOCK);
+	if (!dst_wait_dst_ready(state))
+		return 0;
+	if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
+		/* how to get variable length reply ???? */
+		retval = read_dst(state, state->rx_tuna, 10);
+	} else {
+		retval = read_dst(state, &state->rx_tuna[2], 8);
+	}
+	if (retval < 0) {
+		dprintk("%s: read not successful\n", __FUNCTION__);
+		return 0;
+	}
+	if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
+		if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[0], 9)) {
+			dprintk("%s: checksum failure?\n", __FUNCTION__);
+			return 0;
+		}
+	} else {
+		if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[2], 7)) {
+			dprintk("%s: checksum failure?\n", __FUNCTION__);
+			return 0;
+		}
+	}
+	if (state->rx_tuna[2] == 0 && state->rx_tuna[3] == 0)
+		return 0;
+	state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 8) + state->rx_tuna[3];
+
+	state->decode_lock = 1;
+	/*
+	   dst->decode_n1 = (dst->rx_tuna[4] << 8) +
+	   (dst->rx_tuna[5]);
+
+	   dst->decode_n2 = (dst->rx_tuna[8] << 8) +
+	   (dst->rx_tuna[7]);
+	 */
+	state->diseq_flags |= HAS_LOCK;
+	/* dst->cur_jiff = jiffies; */
+	return 1;
+}
+
+static int dst_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
+
+static int dst_write_tuna(struct dvb_frontend* fe)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+	int retval;
+	u8 reply;
+
+	dprintk("%s: type_flags 0x%x \n", __FUNCTION__, state->type_flags);
+	state->decode_freq = 0;
+	state->decode_lock = state->decode_strength = state->decode_snr = 0;
+	if (state->dst_type == DST_TYPE_IS_SAT) {
+		if (!(state->diseq_flags & HAS_POWER))
+			dst_set_voltage(fe, SEC_VOLTAGE_13);
+	}
+	state->diseq_flags &= ~(HAS_LOCK | ATTEMPT_TUNE);
+	dst_i2c_enable(state);
+	if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
+		dst_reset8820(state);
+		state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[0], 9);
+		retval = write_dst(state, &state->tx_tuna[0], 10);
+	} else {
+		state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[2], 7);
+		retval = write_dst(state, &state->tx_tuna[2], 8);
+	}
+	if (retval < 0) {
+		dst_i2c_disable(state);
+		dprintk("%s: write not successful\n", __FUNCTION__);
+		return retval;
+	}
+	msleep(3);
+	retval = read_dst(state, &reply, 1);
+	dst_i2c_disable(state);
+	if (retval < 0) {
+		dprintk("%s: read verify  not successful\n", __FUNCTION__);
+		return retval;
+	}
+	if (reply != 0xff) {
+		dprintk("%s: write reply not 0xff 0x%02x \n", __FUNCTION__, reply);
+		return 0;
+	}
+	state->diseq_flags |= ATTEMPT_TUNE;
+	return dst_get_tuna(state);
+}
+
+/*
+ * line22k0    0x00, 0x09, 0x00, 0xff, 0x01, 0x00, 0x00, 0x00
+ * line22k1    0x00, 0x09, 0x01, 0xff, 0x01, 0x00, 0x00, 0x00
+ * line22k2    0x00, 0x09, 0x02, 0xff, 0x01, 0x00, 0x00, 0x00
+ * tone        0x00, 0x09, 0xff, 0x00, 0x01, 0x00, 0x00, 0x00
+ * data        0x00, 0x09, 0xff, 0x01, 0x01, 0x00, 0x00, 0x00
+ * power_off   0x00, 0x09, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00
+ * power_on    0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00
+ * Diseqc 1    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec
+ * Diseqc 2    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf4, 0xe8
+ * Diseqc 3    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf8, 0xe4
+ * Diseqc 4    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xfc, 0xe0
+ */
+
+static int dst_set_diseqc(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+	u8 paket[8] = { 0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec };
+
+	if (state->dst_type == DST_TYPE_IS_TERR)
+		return 0;
+
+	if (cmd->msg_len == 0 || cmd->msg_len > 4)
+		return -EINVAL;
+	memcpy(&paket[3], cmd->msg, cmd->msg_len);
+	paket[7] = dst_check_sum(&paket[0], 7);
+	dst_command(state, paket, 8);
+	return 0;
+}
+
+static int dst_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+{
+	u8 *val;
+	int need_cmd;
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	state->voltage = voltage;
+
+	if (state->dst_type == DST_TYPE_IS_TERR)
+		return 0;
+
+	need_cmd = 0;
+	val = &state->tx_tuna[0];
+	val[8] &= ~0x40;
+	switch (voltage) {
+	case SEC_VOLTAGE_13:
+		if ((state->diseq_flags & HAS_POWER) == 0)
+			need_cmd = 1;
+		state->diseq_flags |= HAS_POWER;
+		break;
+	case SEC_VOLTAGE_18:
+		if ((state->diseq_flags & HAS_POWER) == 0)
+			need_cmd = 1;
+		state->diseq_flags |= HAS_POWER;
+		val[8] |= 0x40;
+		break;
+	case SEC_VOLTAGE_OFF:
+		need_cmd = 1;
+		state->diseq_flags &= ~(HAS_POWER | HAS_LOCK | ATTEMPT_TUNE);
+		break;
+	default:
+		return -EINVAL;
+	}
+	if (need_cmd) {
+		dst_tone_power_cmd(state);
+	}
+	return 0;
+}
+
+static int dst_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+	u8 *val;
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	state->tone = tone;
+
+	if (state->dst_type == DST_TYPE_IS_TERR)
+		return 0;
+
+	val = &state->tx_tuna[0];
+
+	val[8] &= ~0x1;
+
+	switch (tone) {
+	case SEC_TONE_OFF:
+		break;
+	case SEC_TONE_ON:
+		val[8] |= 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+	dst_tone_power_cmd(state);
+	return 0;
+}
+
+static int dst_init(struct dvb_frontend* fe)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+	static u8 ini_satci_tuna[] = { 9, 0, 3, 0xb6, 1, 0, 0x73, 0x21, 0, 0 };
+	static u8 ini_satfta_tuna[] = { 0, 0, 3, 0xb6, 1, 0x55, 0xbd, 0x50, 0, 0 };
+	static u8 ini_tvfta_tuna[] = { 0, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
+	static u8 ini_tvci_tuna[] = { 9, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
+	static u8 ini_cabfta_tuna[] = { 0, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
+	static u8 ini_cabci_tuna[] = { 9, 0, 3, 0xb6, 1, 7, 0x0, 0x0, 0, 0 };
+	state->inversion = INVERSION_ON;
+	state->voltage = SEC_VOLTAGE_13;
+	state->tone = SEC_TONE_OFF;
+	state->symbol_rate = 29473000;
+	state->fec = FEC_AUTO;
+	state->diseq_flags = 0;
+	state->k22 = 0x02;
+	state->bandwidth = BANDWIDTH_7_MHZ;
+	state->cur_jiff = jiffies;
+	if (state->dst_type == DST_TYPE_IS_SAT) {
+		state->frequency = 950000;
+		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_satci_tuna : ini_satfta_tuna), sizeof(ini_satfta_tuna));
+	} else if (state->dst_type == DST_TYPE_IS_TERR) {
+		state->frequency = 137000000;
+		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_tvci_tuna : ini_tvfta_tuna), sizeof(ini_tvfta_tuna));
+	} else if (state->dst_type == DST_TYPE_IS_CABLE) {
+		state->frequency = 51000000;
+		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ini_cabci_tuna : ini_cabfta_tuna), sizeof(ini_cabfta_tuna));
+	}
+
+	return 0;
+}
+
+static int dst_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	*status = 0;
+	if (state->diseq_flags & HAS_LOCK) {
+		dst_get_signal(state);
+		if (state->decode_lock)
+			*status |= FE_HAS_LOCK | FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | FE_HAS_VITERBI;
+	}
+
+	return 0;
+}
+
+static int dst_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	dst_get_signal(state);
+	*strength = state->decode_strength;
+
+	return 0;
+}
+
+static int dst_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	dst_get_signal(state);
+	*snr = state->decode_snr;
+
+	return 0;
+}
+
+static int dst_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	dst_set_freq(state, p->frequency);
+	dst_set_inversion(state, p->inversion);
+	if (state->dst_type == DST_TYPE_IS_SAT) {
+		dst_set_fec(state, p->u.qpsk.fec_inner);
+		dst_set_symbolrate(state, p->u.qpsk.symbol_rate);
+	} else if (state->dst_type == DST_TYPE_IS_TERR) {
+		dst_set_bandwidth(state, p->u.ofdm.bandwidth);
+	} else if (state->dst_type == DST_TYPE_IS_CABLE) {
+		dst_set_fec(state, p->u.qam.fec_inner);
+		dst_set_symbolrate(state, p->u.qam.symbol_rate);
+	}
+	dst_write_tuna(fe);
+
+	return 0;
+}
+
+static int dst_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+
+	p->frequency = state->decode_freq;
+	p->inversion = state->inversion;
+	if (state->dst_type == DST_TYPE_IS_SAT) {
+		p->u.qpsk.symbol_rate = state->symbol_rate;
+		p->u.qpsk.fec_inner = dst_get_fec(state);
+	} else if (state->dst_type == DST_TYPE_IS_TERR) {
+		p->u.ofdm.bandwidth = state->bandwidth;
+	} else if (state->dst_type == DST_TYPE_IS_CABLE) {
+		p->u.qam.symbol_rate = state->symbol_rate;
+		p->u.qam.fec_inner = dst_get_fec(state);
+		p->u.qam.modulation = QAM_AUTO;
+	}
+
+	return 0;
+}
+
+static void dst_release(struct dvb_frontend* fe)
+{
+	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;
+	kfree(state);
+}
+
+static struct dvb_frontend_ops dst_dvbt_ops;
+static struct dvb_frontend_ops dst_dvbs_ops;
+static struct dvb_frontend_ops dst_dvbc_ops;
+
+struct dvb_frontend* dst_attach(const struct dst_config* config,
+				struct i2c_adapter* i2c,
+				struct bt878 *bt)
+{
+	struct dst_state* state = NULL;
+
+	/* allocate memory for the internal state */
+	state = (struct dst_state*) kmalloc(sizeof(struct dst_state), GFP_KERNEL);
+	if (state == NULL) goto error;
+
+	/* setup the state */
+	state->config = config;
+	state->i2c = i2c;
+	state->bt = bt;
+
+	/* check if the demod is there */
+	if (dst_check_ci(state) < 0) goto error;
+
+	/* determine settings based on type */
+	switch (state->dst_type) {
+	case DST_TYPE_IS_TERR:
+		memcpy(&state->ops, &dst_dvbt_ops, sizeof(struct dvb_frontend_ops));
+		break;
+	case DST_TYPE_IS_CABLE:
+		memcpy(&state->ops, &dst_dvbc_ops, sizeof(struct dvb_frontend_ops));
+		break;
+	case DST_TYPE_IS_SAT:
+		memcpy(&state->ops, &dst_dvbs_ops, sizeof(struct dvb_frontend_ops));
+		break;
+	default:
+		printk("dst: unknown frontend type. please report to the LinuxTV.org DVB mailinglist.\n");
+		goto error;
+	}
+
+	/* create dvb_frontend */
+	state->frontend.ops = &state->ops;
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+
+error:
+	kfree(state);
+	return NULL;
+}
+
+static struct dvb_frontend_ops dst_dvbt_ops = {
+
+	.info = {
+		.name = "DST DVB-T",
+		.type = FE_OFDM,
+		.frequency_min = 137000000,
+		.frequency_max = 858000000,
+		.frequency_stepsize = 166667,
+		.caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO
+	},
+
+	.release = dst_release,
+
+	.init = dst_init,
+
+	.set_frontend = dst_set_frontend,
+	.get_frontend = dst_get_frontend,
+
+	.read_status = dst_read_status,
+	.read_signal_strength = dst_read_signal_strength,
+	.read_snr = dst_read_snr,
+};
+
+static struct dvb_frontend_ops dst_dvbs_ops = {
+
+	.info = {
+		.name = "DST DVB-S",
+		.type = FE_QPSK,
+		.frequency_min = 950000,
+		.frequency_max = 2150000,
+		.frequency_stepsize = 1000,	/* kHz for QPSK frontends */
+		.frequency_tolerance = 29500,
+		.symbol_rate_min = 1000000,
+		.symbol_rate_max = 45000000,
+	/*     . symbol_rate_tolerance	=	???,*/
+		.caps = FE_CAN_FEC_AUTO | FE_CAN_QPSK
+	},
+
+	.release = dst_release,
+
+	.init = dst_init,
+
+	.set_frontend = dst_set_frontend,
+	.get_frontend = dst_get_frontend,
+
+	.read_status = dst_read_status,
+	.read_signal_strength = dst_read_signal_strength,
+	.read_snr = dst_read_snr,
+
+	.diseqc_send_master_cmd = dst_set_diseqc,
+	.set_voltage = dst_set_voltage,
+	.set_tone = dst_set_tone,
+};
+
+static struct dvb_frontend_ops dst_dvbc_ops = {
+
+	.info = {
+		.name = "DST DVB-C",
+		.type = FE_QAM,
+		.frequency_stepsize = 62500,
+		.frequency_min = 51000000,
+		.frequency_max = 858000000,
+		.symbol_rate_min = 1000000,
+		.symbol_rate_max = 45000000,
+	/*     . symbol_rate_tolerance	=	???,*/
+		.caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO
+	},
+
+	.release = dst_release,
+
+	.init = dst_init,
+
+	.set_frontend = dst_set_frontend,
+	.get_frontend = dst_get_frontend,
+
+	.read_status = dst_read_status,
+	.read_signal_strength = dst_read_signal_strength,
+	.read_snr = dst_read_snr,
+};
+
+MODULE_DESCRIPTION("DST DVB-S/T/C Combo Frontend driver");
+MODULE_AUTHOR("Jamie Honan");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(dst_attach);