--- /dev/null
+/*
+ Montage Technology DS3000/TS2020 - DVBS/S2 Demodulator/Tuner driver
+ Copyright (C) 2009 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
+
+ Copyright (C) 2009 TurboSight.com
+
+ 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/slab.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/firmware.h>
+
+#include "dvb_frontend.h"
+#include "ds3000.h"
+
+static int debug;
+
+#define dprintk(args...) \
+ do { \
+ if (debug) \
+ printk(args); \
+ } while (0)
+
+/* as of March 2009 current DS3000 firmware version is 1.78 */
+/* DS3000 FW v1.78 MD5: a32d17910c4f370073f9346e71d34b80 */
+#define DS3000_DEFAULT_FIRMWARE "dvb-fe-ds3000.fw"
+
+#define DS3000_SAMPLE_RATE 96000 /* in kHz */
+#define DS3000_XTAL_FREQ 27000 /* in kHz */
+
+/* Register values to initialise the demod in DVB-S mode */
+static u8 ds3000_dvbs_init_tab[] = {
+ 0x23, 0x05,
+ 0x08, 0x03,
+ 0x0c, 0x00,
+ 0x21, 0x54,
+ 0x25, 0x82,
+ 0x27, 0x31,
+ 0x30, 0x08,
+ 0x31, 0x40,
+ 0x32, 0x32,
+ 0x33, 0x35,
+ 0x35, 0xff,
+ 0x3a, 0x00,
+ 0x37, 0x10,
+ 0x38, 0x10,
+ 0x39, 0x02,
+ 0x42, 0x60,
+ 0x4a, 0x40,
+ 0x4b, 0x04,
+ 0x4d, 0x91,
+ 0x5d, 0xc8,
+ 0x50, 0x77,
+ 0x51, 0x77,
+ 0x52, 0x36,
+ 0x53, 0x36,
+ 0x56, 0x01,
+ 0x63, 0x43,
+ 0x64, 0x30,
+ 0x65, 0x40,
+ 0x68, 0x26,
+ 0x69, 0x4c,
+ 0x70, 0x20,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x40,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x60,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x80,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0xa0,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x1f,
+ 0x76, 0x00,
+ 0x77, 0xd1,
+ 0x78, 0x0c,
+ 0x79, 0x80,
+ 0x7f, 0x04,
+ 0x7c, 0x00,
+ 0x80, 0x86,
+ 0x81, 0xa6,
+ 0x85, 0x04,
+ 0xcd, 0xf4,
+ 0x90, 0x33,
+ 0xa0, 0x44,
+ 0xc0, 0x18,
+ 0xc3, 0x10,
+ 0xc4, 0x08,
+ 0xc5, 0x80,
+ 0xc6, 0x80,
+ 0xc7, 0x0a,
+ 0xc8, 0x1a,
+ 0xc9, 0x80,
+ 0xfe, 0x92,
+ 0xe0, 0xf8,
+ 0xe6, 0x8b,
+ 0xd0, 0x40,
+ 0xf8, 0x20,
+ 0xfa, 0x0f,
+ 0xfd, 0x20,
+ 0xad, 0x20,
+ 0xae, 0x07,
+ 0xb8, 0x00,
+};
+
+/* Register values to initialise the demod in DVB-S2 mode */
+static u8 ds3000_dvbs2_init_tab[] = {
+ 0x23, 0x0f,
+ 0x08, 0x07,
+ 0x0c, 0x00,
+ 0x21, 0x54,
+ 0x25, 0x82,
+ 0x27, 0x31,
+ 0x30, 0x08,
+ 0x31, 0x32,
+ 0x32, 0x32,
+ 0x33, 0x35,
+ 0x35, 0xff,
+ 0x3a, 0x00,
+ 0x37, 0x10,
+ 0x38, 0x10,
+ 0x39, 0x02,
+ 0x42, 0x60,
+ 0x4a, 0x80,
+ 0x4b, 0x04,
+ 0x4d, 0x81,
+ 0x5d, 0x88,
+ 0x50, 0x36,
+ 0x51, 0x36,
+ 0x52, 0x36,
+ 0x53, 0x36,
+ 0x63, 0x60,
+ 0x64, 0x10,
+ 0x65, 0x10,
+ 0x68, 0x04,
+ 0x69, 0x29,
+ 0x70, 0x20,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x40,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x60,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x80,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0xa0,
+ 0x71, 0x70,
+ 0x72, 0x04,
+ 0x73, 0x00,
+ 0x70, 0x1f,
+ 0xa0, 0x44,
+ 0xc0, 0x08,
+ 0xc1, 0x10,
+ 0xc2, 0x08,
+ 0xc3, 0x10,
+ 0xc4, 0x08,
+ 0xc5, 0xf0,
+ 0xc6, 0xf0,
+ 0xc7, 0x0a,
+ 0xc8, 0x1a,
+ 0xc9, 0x80,
+ 0xca, 0x23,
+ 0xcb, 0x24,
+ 0xce, 0x74,
+ 0x90, 0x03,
+ 0x76, 0x80,
+ 0x77, 0x42,
+ 0x78, 0x0a,
+ 0x79, 0x80,
+ 0xad, 0x40,
+ 0xae, 0x07,
+ 0x7f, 0xd4,
+ 0x7c, 0x00,
+ 0x80, 0xa8,
+ 0x81, 0xda,
+ 0x7c, 0x01,
+ 0x80, 0xda,
+ 0x81, 0xec,
+ 0x7c, 0x02,
+ 0x80, 0xca,
+ 0x81, 0xeb,
+ 0x7c, 0x03,
+ 0x80, 0xba,
+ 0x81, 0xdb,
+ 0x85, 0x08,
+ 0x86, 0x00,
+ 0x87, 0x02,
+ 0x89, 0x80,
+ 0x8b, 0x44,
+ 0x8c, 0xaa,
+ 0x8a, 0x10,
+ 0xba, 0x00,
+ 0xf5, 0x04,
+ 0xfe, 0x44,
+ 0xd2, 0x32,
+ 0xb8, 0x00,
+};
+
+/* DS3000 doesn't need some parameters as input and auto-detects them */
+/* save input from the application of those parameters */
+struct ds3000_tuning {
+ u32 frequency;
+ u32 symbol_rate;
+ fe_spectral_inversion_t inversion;
+ enum fe_code_rate fec;
+
+ /* input values */
+ u8 inversion_val;
+ fe_modulation_t delivery;
+ u8 rolloff;
+};
+
+struct ds3000_state {
+ struct i2c_adapter *i2c;
+ const struct ds3000_config *config;
+
+ struct dvb_frontend frontend;
+
+ struct ds3000_tuning dcur;
+ struct ds3000_tuning dnxt;
+
+ u8 skip_fw_load;
+
+ /* previous uncorrected block counter for DVB-S2 */
+ u16 prevUCBS2;
+};
+
+static int ds3000_writereg(struct ds3000_state *state, int reg, int data)
+{
+ u8 buf[] = { reg, data };
+ struct i2c_msg msg = { .addr = state->config->demod_address,
+ .flags = 0, .buf = buf, .len = 2 };
+ int err;
+
+ dprintk("%s: write reg 0x%02x, value 0x%02x\n", __func__, reg, data);
+
+ err = i2c_transfer(state->i2c, &msg, 1);
+ if (err != 1) {
+ printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x,"
+ " value == 0x%02x)\n", __func__, err, reg, data);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+static int ds3000_tuner_writereg(struct ds3000_state *state, int reg, int data)
+{
+ u8 buf[] = { reg, data };
+ struct i2c_msg msg = { .addr = 0x60,
+ .flags = 0, .buf = buf, .len = 2 };
+ int err;
+
+ dprintk("%s: write reg 0x%02x, value 0x%02x\n", __func__, reg, data);
+
+ ds3000_writereg(state, 0x03, 0x11);
+ err = i2c_transfer(state->i2c, &msg, 1);
+ if (err != 1) {
+ printk("%s: writereg error(err == %i, reg == 0x%02x,"
+ " value == 0x%02x)\n", __func__, err, reg, data);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+/* I2C write for 8k firmware load */
+static int ds3000_writeFW(struct ds3000_state *state, int reg,
+ const u8 *data, u16 len)
+{
+ int i, ret = -EREMOTEIO;
+ struct i2c_msg msg;
+ u8 *buf;
+
+ buf = kmalloc(3, GFP_KERNEL);
+ if (buf == NULL) {
+ printk(KERN_ERR "Unable to kmalloc\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ *(buf) = reg;
+
+ msg.addr = state->config->demod_address;
+ msg.flags = 0;
+ msg.buf = buf;
+ msg.len = 3;
+
+ for (i = 0; i < len; i += 2) {
+ memcpy(buf + 1, data + i, 2);
+
+ dprintk("%s: write reg 0x%02x, len = %d\n", __func__, reg, len);
+
+ ret = i2c_transfer(state->i2c, &msg, 1);
+ if (ret != 1) {
+ printk(KERN_ERR "%s: write error(err == %i, "
+ "reg == 0x%02x\n", __func__, ret, reg);
+ ret = -EREMOTEIO;
+ }
+ }
+
+error:
+ kfree(buf);
+
+ return ret;
+}
+
+static int ds3000_readreg(struct ds3000_state *state, u8 reg)
+{
+ int ret;
+ u8 b0[] = { reg };
+ u8 b1[] = { 0 };
+ struct i2c_msg msg[] = {
+ {
+ .addr = state->config->demod_address,
+ .flags = 0,
+ .buf = b0,
+ .len = 1
+ }, {
+ .addr = state->config->demod_address,
+ .flags = I2C_M_RD,
+ .buf = b1,
+ .len = 1
+ }
+ };
+
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2) {
+ printk(KERN_ERR "%s: reg=0x%x(error=%d)\n", __func__, reg, ret);
+ return ret;
+ }
+
+ dprintk("%s: read reg 0x%02x, value 0x%02x\n", __func__, reg, b1[0]);
+
+ return b1[0];
+}
+
+static int ds3000_tuner_readreg(struct ds3000_state *state, u8 reg)
+{
+ int ret;
+ u8 b0[] = { reg };
+ u8 b1[] = { 0 };
+ struct i2c_msg msg[] = {
+ {
+ .addr = 0x60,
+ .flags = 0,
+ .buf = b0,
+ .len = 1
+ }, {
+ .addr = 0x60,
+ .flags = I2C_M_RD,
+ .buf = b1,
+ .len = 1
+ }
+ };
+
+ ds3000_writereg(state, 0x03, 0x12);
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2) {
+ printk(KERN_ERR "%s: reg=0x%x(error=%d)\n", __func__, reg, ret);
+ return ret;
+ }
+
+ dprintk("%s: read reg 0x%02x, value 0x%02x\n", __func__, reg, b1[0]);
+
+ return b1[0];
+}
+
+static int ds3000_set_inversion(struct ds3000_state *state,
+ fe_spectral_inversion_t inversion)
+{
+ dprintk("%s(%d)\n", __func__, inversion);
+
+ switch (inversion) {
+ case INVERSION_OFF:
+ case INVERSION_ON:
+ case INVERSION_AUTO:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ state->dnxt.inversion = inversion;
+
+ return 0;
+}
+
+static int ds3000_set_symbolrate(struct ds3000_state *state, u32 rate)
+{
+ int ret = 0;
+
+ dprintk("%s()\n", __func__);
+
+ dprintk("%s() symbol_rate = %d\n", __func__, state->dnxt.symbol_rate);
+
+ /* check if symbol rate is within limits */
+ if ((state->dnxt.symbol_rate >
+ state->frontend.ops.info.symbol_rate_max) ||
+ (state->dnxt.symbol_rate <
+ state->frontend.ops.info.symbol_rate_min))
+ ret = -EOPNOTSUPP;
+
+ state->dnxt.symbol_rate = rate;
+
+ return ret;
+}
+
+static int ds3000_load_firmware(struct dvb_frontend *fe,
+ const struct firmware *fw);
+
+static int ds3000_firmware_ondemand(struct dvb_frontend *fe)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ const struct firmware *fw;
+ int ret = 0;
+
+ dprintk("%s()\n", __func__);
+
+ if (ds3000_readreg(state, 0xb2) <= 0)
+ return ret;
+
+ if (state->skip_fw_load)
+ return 0;
+ /* Load firmware */
+ /* request the firmware, this will block until someone uploads it */
+ printk(KERN_INFO "%s: Waiting for firmware upload (%s)...\n", __func__,
+ DS3000_DEFAULT_FIRMWARE);
+ ret = request_firmware(&fw, DS3000_DEFAULT_FIRMWARE,
+ state->i2c->dev.parent);
+ printk(KERN_INFO "%s: Waiting for firmware upload(2)...\n", __func__);
+ if (ret) {
+ printk(KERN_ERR "%s: No firmware uploaded (timeout or file not "
+ "found?)\n", __func__);
+ return ret;
+ }
+
+ /* Make sure we don't recurse back through here during loading */
+ state->skip_fw_load = 1;
+
+ ret = ds3000_load_firmware(fe, fw);
+ if (ret)
+ printk("%s: Writing firmware to device failed\n", __func__);
+
+ release_firmware(fw);
+
+ dprintk("%s: Firmware upload %s\n", __func__,
+ ret == 0 ? "complete" : "failed");
+
+ /* Ensure firmware is always loaded if required */
+ state->skip_fw_load = 0;
+
+ return ret;
+}
+
+static int ds3000_load_firmware(struct dvb_frontend *fe,
+ const struct firmware *fw)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+
+ dprintk("%s\n", __func__);
+ dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n",
+ fw->size,
+ fw->data[0],
+ fw->data[1],
+ fw->data[fw->size - 2],
+ fw->data[fw->size - 1]);
+
+ /* Begin the firmware load process */
+ ds3000_writereg(state, 0xb2, 0x01);
+ /* write the entire firmware */
+ ds3000_writeFW(state, 0xb0, fw->data, fw->size);
+ ds3000_writereg(state, 0xb2, 0x00);
+
+ return 0;
+}
+
+static void ds3000_dump_registers(struct dvb_frontend *fe)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ int x, y, reg = 0, val;
+
+ for (y = 0; y < 16; y++) {
+ dprintk("%s: %02x: ", __func__, y);
+ for (x = 0; x < 16; x++) {
+ reg = (y << 4) + x;
+ val = ds3000_readreg(state, reg);
+ if (x != 15)
+ dprintk("%02x ", val);
+ else
+ dprintk("%02x\n", val);
+ }
+ }
+ dprintk("%s: -- DS3000 DUMP DONE --\n", __func__);
+}
+
+static int ds3000_read_status(struct dvb_frontend *fe, fe_status_t* status)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int lock;
+
+ *status = 0;
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ lock = ds3000_readreg(state, 0xd1);
+ if ((lock & 0x07) == 0x07)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC |
+ FE_HAS_LOCK;
+
+ break;
+ case SYS_DVBS2:
+ lock = ds3000_readreg(state, 0x0d);
+ if ((lock & 0x8f) == 0x8f)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC |
+ FE_HAS_LOCK;
+
+ break;
+ default:
+ return 1;
+ }
+
+ dprintk("%s: status = 0x%02x\n", __func__, lock);
+
+ return 0;
+}
+
+#define FE_IS_TUNED (FE_HAS_SIGNAL + FE_HAS_LOCK)
+static int ds3000_is_tuned(struct dvb_frontend *fe)
+{
+ fe_status_t tunerstat;
+
+ ds3000_read_status(fe, &tunerstat);
+
+ return ((tunerstat & FE_IS_TUNED) == FE_IS_TUNED);
+}
+
+/* read DS3000 BER value */
+static int ds3000_read_ber(struct dvb_frontend *fe, u32* ber)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u8 data;
+ u32 ber_reading, lpdc_frames;
+
+ dprintk("%s()\n", __func__);
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ /* set the number of bytes checked during
+ BER estimation */
+ ds3000_writereg(state, 0xf9, 0x04);
+ /* read BER estimation status */
+ data = ds3000_readreg(state, 0xf8);
+ /* check if BER estimation is ready */
+ if ((data & 0x10) == 0) {
+ /* this is the number of error bits,
+ to calculate the bit error rate
+ divide to 8388608 */
+ *ber = (ds3000_readreg(state, 0xf7) << 8) |
+ ds3000_readreg(state, 0xf6);
+ /* start counting error bits */
+ /* need to be set twice
+ otherwise it fails sometimes */
+ data |= 0x10;
+ ds3000_writereg(state, 0xf8, data);
+ ds3000_writereg(state, 0xf8, data);
+ } else
+ /* used to indicate that BER estimation
+ is not ready, i.e. BER is unknown */
+ *ber = 0xffffffff;
+ break;
+ case SYS_DVBS2:
+ /* read the number of LPDC decoded frames */
+ lpdc_frames = (ds3000_readreg(state, 0xd7) << 16) |
+ (ds3000_readreg(state, 0xd6) << 8) |
+ ds3000_readreg(state, 0xd5);
+ /* read the number of packets with bad CRC */
+ ber_reading = (ds3000_readreg(state, 0xf8) << 8) |
+ ds3000_readreg(state, 0xf7);
+ if (lpdc_frames > 750) {
+ /* clear LPDC frame counters */
+ ds3000_writereg(state, 0xd1, 0x01);
+ /* clear bad packets counter */
+ ds3000_writereg(state, 0xf9, 0x01);
+ /* enable bad packets counter */
+ ds3000_writereg(state, 0xf9, 0x00);
+ /* enable LPDC frame counters */
+ ds3000_writereg(state, 0xd1, 0x00);
+ *ber = ber_reading;
+ } else
+ /* used to indicate that BER estimation is not ready,
+ i.e. BER is unknown */
+ *ber = 0xffffffff;
+ break;
+ default:
+ return 1;
+ }
+
+ return 0;
+}
+
+/* read TS2020 signal strength */
+static int ds3000_read_signal_strength(struct dvb_frontend *fe,
+ u16 *signal_strength)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ u16 sig_reading, sig_strength;
+ u8 rfgain, bbgain;
+
+ dprintk("%s()\n", __func__);
+
+ rfgain = ds3000_tuner_readreg(state, 0x3d) & 0x1f;
+ bbgain = ds3000_tuner_readreg(state, 0x21) & 0x1f;
+
+ if (rfgain > 15)
+ rfgain = 15;
+ if (bbgain > 13)
+ bbgain = 13;
+
+ sig_reading = rfgain * 2 + bbgain * 3;
+
+ sig_strength = 40 + (64 - sig_reading) * 50 / 64 ;
+
+ /* cook the value to be suitable for szap-s2 human readable output */
+ *signal_strength = sig_strength * 1000;
+
+ dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n", __func__,
+ sig_reading, *signal_strength);
+
+ return 0;
+}
+
+/* calculate DS3000 snr value in dB */
+static int ds3000_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u8 snr_reading, snr_value;
+ u32 dvbs2_signal_reading, dvbs2_noise_reading, tmp;
+ static const u16 dvbs_snr_tab[] = { /* 20 x Table (rounded up) */
+ 0x0000, 0x1b13, 0x2aea, 0x3627, 0x3ede, 0x45fe, 0x4c03,
+ 0x513a, 0x55d4, 0x59f2, 0x5dab, 0x6111, 0x6431, 0x6717,
+ 0x69c9, 0x6c4e, 0x6eac, 0x70e8, 0x7304, 0x7505
+ };
+ static const u16 dvbs2_snr_tab[] = { /* 80 x Table (rounded up) */
+ 0x0000, 0x0bc2, 0x12a3, 0x1785, 0x1b4e, 0x1e65, 0x2103,
+ 0x2347, 0x2546, 0x2710, 0x28ae, 0x2a28, 0x2b83, 0x2cc5,
+ 0x2df1, 0x2f09, 0x3010, 0x3109, 0x31f4, 0x32d2, 0x33a6,
+ 0x3470, 0x3531, 0x35ea, 0x369b, 0x3746, 0x37ea, 0x3888,
+ 0x3920, 0x39b3, 0x3a42, 0x3acc, 0x3b51, 0x3bd3, 0x3c51,
+ 0x3ccb, 0x3d42, 0x3db6, 0x3e27, 0x3e95, 0x3f00, 0x3f68,
+ 0x3fcf, 0x4033, 0x4094, 0x40f4, 0x4151, 0x41ac, 0x4206,
+ 0x425e, 0x42b4, 0x4308, 0x435b, 0x43ac, 0x43fc, 0x444a,
+ 0x4497, 0x44e2, 0x452d, 0x4576, 0x45bd, 0x4604, 0x4649,
+ 0x468e, 0x46d1, 0x4713, 0x4755, 0x4795, 0x47d4, 0x4813,
+ 0x4851, 0x488d, 0x48c9, 0x4904, 0x493f, 0x4978, 0x49b1,
+ 0x49e9, 0x4a20, 0x4a57
+ };
+
+ dprintk("%s()\n", __func__);
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ snr_reading = ds3000_readreg(state, 0xff);
+ snr_reading /= 8;
+ if (snr_reading == 0)
+ *snr = 0x0000;
+ else {
+ if (snr_reading > 20)
+ snr_reading = 20;
+ snr_value = dvbs_snr_tab[snr_reading - 1] * 10 / 23026;
+ /* cook the value to be suitable for szap-s2
+ human readable output */
+ *snr = snr_value * 8 * 655;
+ }
+ dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__,
+ snr_reading, *snr);
+ break;
+ case SYS_DVBS2:
+ dvbs2_noise_reading = (ds3000_readreg(state, 0x8c) & 0x3f) +
+ (ds3000_readreg(state, 0x8d) << 4);
+ dvbs2_signal_reading = ds3000_readreg(state, 0x8e);
+ tmp = dvbs2_signal_reading * dvbs2_signal_reading >> 1;
+ if (dvbs2_signal_reading == 0) {
+ *snr = 0x0000;
+ return 0;
+ }
+ if (dvbs2_noise_reading == 0) {
+ snr_value = 0x0013;
+ /* cook the value to be suitable for szap-s2
+ human readable output */
+ *snr = 0xffff;
+ return 0;
+ }
+ if (tmp > dvbs2_noise_reading) {
+ snr_reading = tmp / dvbs2_noise_reading;
+ if (snr_reading > 80)
+ snr_reading = 80;
+ snr_value = dvbs2_snr_tab[snr_reading - 1] / 1000;
+ /* cook the value to be suitable for szap-s2
+ human readable output */
+ *snr = snr_value * 5 * 655;
+ } else {
+ snr_reading = dvbs2_noise_reading / tmp;
+ if (snr_reading > 80)
+ snr_reading = 80;
+ *snr = -(dvbs2_snr_tab[snr_reading] / 1000);
+ }
+ dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n", __func__,
+ snr_reading, *snr);
+ break;
+ default:
+ return 1;
+ }
+
+ return 0;
+}
+
+/* read DS3000 uncorrected blocks */
+static int ds3000_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u8 data;
+ u16 _ucblocks;
+
+ dprintk("%s()\n", __func__);
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ *ucblocks = (ds3000_readreg(state, 0xf5) << 8) |
+ ds3000_readreg(state, 0xf4);
+ data = ds3000_readreg(state, 0xf8);
+ /* clear packet counters */
+ data &= ~0x20;
+ ds3000_writereg(state, 0xf8, data);
+ /* enable packet counters */
+ data |= 0x20;
+ ds3000_writereg(state, 0xf8, data);
+ break;
+ case SYS_DVBS2:
+ _ucblocks = (ds3000_readreg(state, 0xe2) << 8) |
+ ds3000_readreg(state, 0xe1);
+ if (_ucblocks > state->prevUCBS2)
+ *ucblocks = _ucblocks - state->prevUCBS2;
+ else
+ *ucblocks = state->prevUCBS2 - _ucblocks;
+ state->prevUCBS2 = _ucblocks;
+ break;
+ default:
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Overwrite the current tuning params, we are about to tune */
+static void ds3000_clone_params(struct dvb_frontend *fe)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ memcpy(&state->dcur, &state->dnxt, sizeof(state->dcur));
+}
+
+static int ds3000_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ u8 data;
+
+ dprintk("%s(%d)\n", __func__, tone);
+ if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
+ printk(KERN_ERR "%s: Invalid, tone=%d\n", __func__, tone);
+ return -EINVAL;
+ }
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ ds3000_writereg(state, 0xa2, data);
+
+ switch (tone) {
+ case SEC_TONE_ON:
+ dprintk("%s: setting tone on\n", __func__);
+ data = ds3000_readreg(state, 0xa1);
+ data &= ~0x43;
+ data |= 0x04;
+ ds3000_writereg(state, 0xa1, data);
+ break;
+ case SEC_TONE_OFF:
+ dprintk("%s: setting tone off\n", __func__);
+ data = ds3000_readreg(state, 0xa2);
+ data |= 0x80;
+ ds3000_writereg(state, 0xa2, data);
+ break;
+ }
+
+ return 0;
+}
+
+static int ds3000_send_diseqc_msg(struct dvb_frontend *fe,
+ struct dvb_diseqc_master_cmd *d)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ int i;
+ u8 data;
+
+ /* Dump DiSEqC message */
+ dprintk("%s(", __func__);
+ for (i = 0 ; i < d->msg_len;) {
+ dprintk("0x%02x", d->msg[i]);
+ if (++i < d->msg_len)
+ dprintk(", ");
+ }
+
+ /* enable DiSEqC message send pin */
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ ds3000_writereg(state, 0xa2, data);
+
+ /* DiSEqC message */
+ for (i = 0; i < d->msg_len; i++)
+ ds3000_writereg(state, 0xa3 + i, d->msg[i]);
+
+ data = ds3000_readreg(state, 0xa1);
+ /* clear DiSEqC message length and status,
+ enable DiSEqC message send */
+ data &= ~0xf8;
+ /* set DiSEqC mode, modulation active during 33 pulses,
+ set DiSEqC message length */
+ data |= ((d->msg_len - 1) << 3) | 0x07;
+ ds3000_writereg(state, 0xa1, data);
+
+ /* wait up to 150ms for DiSEqC transmission to complete */
+ for (i = 0; i < 15; i++) {
+ data = ds3000_readreg(state, 0xa1);
+ if ((data & 0x40) == 0)
+ break;
+ msleep(10);
+ }
+
+ /* DiSEqC timeout after 150ms */
+ if (i == 15) {
+ data = ds3000_readreg(state, 0xa1);
+ data &= ~0x80;
+ data |= 0x40;
+ ds3000_writereg(state, 0xa1, data);
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ data |= 0x80;
+ ds3000_writereg(state, 0xa2, data);
+
+ return 1;
+ }
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ data |= 0x80;
+ ds3000_writereg(state, 0xa2, data);
+
+ return 0;
+}
+
+/* Send DiSEqC burst */
+static int ds3000_diseqc_send_burst(struct dvb_frontend *fe,
+ fe_sec_mini_cmd_t burst)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ int i;
+ u8 data;
+
+ dprintk("%s()\n", __func__);
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ ds3000_writereg(state, 0xa2, data);
+
+ /* DiSEqC burst */
+ if (burst == SEC_MINI_A)
+ /* Unmodulated tone burst */
+ ds3000_writereg(state, 0xa1, 0x02);
+ else if (burst == SEC_MINI_B)
+ /* Modulated tone burst */
+ ds3000_writereg(state, 0xa1, 0x01);
+ else
+ return -EINVAL;
+
+ msleep(13);
+ for (i = 0; i < 5; i++) {
+ data = ds3000_readreg(state, 0xa1);
+ if ((data & 0x40) == 0)
+ break;
+ msleep(1);
+ }
+
+ if (i == 5) {
+ data = ds3000_readreg(state, 0xa1);
+ data &= ~0x80;
+ data |= 0x40;
+ ds3000_writereg(state, 0xa1, data);
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ data |= 0x80;
+ ds3000_writereg(state, 0xa2, data);
+
+ return 1;
+ }
+
+ data = ds3000_readreg(state, 0xa2);
+ data &= ~0xc0;
+ data |= 0x80;
+ ds3000_writereg(state, 0xa2, data);
+
+ return 0;
+}
+
+static void ds3000_release(struct dvb_frontend *fe)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ dprintk("%s\n", __func__);
+ kfree(state);
+}
+
+static struct dvb_frontend_ops ds3000_ops;
+
+struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct ds3000_state *state = NULL;
+ int ret;
+
+ dprintk("%s\n", __func__);
+
+ /* allocate memory for the internal state */
+ state = kmalloc(sizeof(struct ds3000_state), GFP_KERNEL);
+ if (state == NULL) {
+ printk(KERN_ERR "Unable to kmalloc\n");
+ goto error2;
+ }
+
+ /* setup the state */
+ memset(state, 0, sizeof(struct ds3000_state));
+
+ state->config = config;
+ state->i2c = i2c;
+ state->prevUCBS2 = 0;
+
+ /* check if the demod is present */
+ ret = ds3000_readreg(state, 0x00) & 0xfe;
+ if (ret != 0xe0) {
+ printk(KERN_ERR "Invalid probe, probably not a DS3000\n");
+ goto error3;
+ }
+
+ printk(KERN_INFO "DS3000 chip version: %d.%d attached.\n",
+ ds3000_readreg(state, 0x02),
+ ds3000_readreg(state, 0x01));
+
+ memcpy(&state->frontend.ops, &ds3000_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+
+error3:
+ kfree(state);
+error2:
+ return NULL;
+}
+EXPORT_SYMBOL(ds3000_attach);
+
+static int ds3000_set_property(struct dvb_frontend *fe,
+ struct dtv_property *tvp)
+{
+ dprintk("%s(..)\n", __func__);
+ return 0;
+}
+
+static int ds3000_get_property(struct dvb_frontend *fe,
+ struct dtv_property *tvp)
+{
+ dprintk("%s(..)\n", __func__);
+ return 0;
+}
+
+static int ds3000_tune(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
+{
+ struct ds3000_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+
+ int ret = 0, retune, i;
+ u8 status, mlpf, mlpf_new, mlpf_max, mlpf_min, nlpf;
+ u16 value, ndiv;
+ u32 f3db;
+
+ dprintk("%s() ", __func__);
+
+ /* Load the firmware if required */
+ ret = ds3000_firmware_ondemand(fe);
+ if (ret != 0) {
+ printk(KERN_ERR "%s: Unable initialise the firmware\n",
+ __func__);
+ return ret;
+ }
+
+ state->dnxt.delivery = c->modulation;
+ state->dnxt.frequency = c->frequency;
+ state->dnxt.rolloff = 2; /* fixme */
+ state->dnxt.fec = c->fec_inner;
+
+ ret = ds3000_set_inversion(state, p->inversion);
+ if (ret != 0)
+ return ret;
+
+ ret = ds3000_set_symbolrate(state, c->symbol_rate);
+ if (ret != 0)
+ return ret;
+
+ /* discard the 'current' tuning parameters and prepare to tune */
+ ds3000_clone_params(fe);
+
+ retune = 1; /* try 1 times */
+ dprintk("%s: retune = %d\n", __func__, retune);
+ dprintk("%s: frequency = %d\n", __func__, state->dcur.frequency);
+ dprintk("%s: symbol_rate = %d\n", __func__, state->dcur.symbol_rate);
+ dprintk("%s: FEC = %d \n", __func__,
+ state->dcur.fec);
+ dprintk("%s: Inversion = %d\n", __func__, state->dcur.inversion);
+
+ do {
+ /* Reset status register */
+ status = 0;
+ /* Tune */
+ /* TS2020 init */
+ ds3000_tuner_writereg(state, 0x42, 0x73);
+ ds3000_tuner_writereg(state, 0x05, 0x01);
+ ds3000_tuner_writereg(state, 0x62, 0xf5);
+ /* unknown */
+ ds3000_tuner_writereg(state, 0x07, 0x02);
+ ds3000_tuner_writereg(state, 0x10, 0x00);
+ ds3000_tuner_writereg(state, 0x60, 0x79);
+ ds3000_tuner_writereg(state, 0x08, 0x01);
+ ds3000_tuner_writereg(state, 0x00, 0x01);
+ /* calculate and set freq divider */
+ if (state->dcur.frequency < 1146000) {
+ ds3000_tuner_writereg(state, 0x10, 0x11);
+ ndiv = ((state->dcur.frequency * (6 + 8) * 4) +
+ (DS3000_XTAL_FREQ / 2)) /
+ DS3000_XTAL_FREQ - 1024;
+ } else {
+ ds3000_tuner_writereg(state, 0x10, 0x01);
+ ndiv = ((state->dcur.frequency * (6 + 8) * 2) +
+ (DS3000_XTAL_FREQ / 2)) /
+ DS3000_XTAL_FREQ - 1024;
+ }
+
+ ds3000_tuner_writereg(state, 0x01, (ndiv & 0x0f00) >> 8);
+ ds3000_tuner_writereg(state, 0x02, ndiv & 0x00ff);
+
+ /* set pll */
+ ds3000_tuner_writereg(state, 0x03, 0x06);
+ ds3000_tuner_writereg(state, 0x51, 0x0f);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x10);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+ msleep(5);
+
+ /* unknown */
+ ds3000_tuner_writereg(state, 0x51, 0x17);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x08);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+ msleep(5);
+
+ value = ds3000_tuner_readreg(state, 0x3d);
+ value &= 0x0f;
+ if ((value > 4) && (value < 15)) {
+ value -= 3;
+ if (value < 4)
+ value = 4;
+ value = ((value << 3) | 0x01) & 0x79;
+ }
+
+ ds3000_tuner_writereg(state, 0x60, value);
+ ds3000_tuner_writereg(state, 0x51, 0x17);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x08);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+
+ /* set low-pass filter period */
+ ds3000_tuner_writereg(state, 0x04, 0x2e);
+ ds3000_tuner_writereg(state, 0x51, 0x1b);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x04);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+ msleep(5);
+
+ f3db = ((state->dcur.symbol_rate / 1000) << 2) / 5 + 2000;
+ if ((state->dcur.symbol_rate / 1000) < 5000)
+ f3db += 3000;
+ if (f3db < 7000)
+ f3db = 7000;
+ if (f3db > 40000)
+ f3db = 40000;
+
+ /* set low-pass filter baseband */
+ value = ds3000_tuner_readreg(state, 0x26);
+ mlpf = 0x2e * 207 / ((value << 1) + 151);
+ mlpf_max = mlpf * 135 / 100;
+ mlpf_min = mlpf * 78 / 100;
+ if (mlpf_max > 63)
+ mlpf_max = 63;
+
+ /* rounded to the closest integer */
+ nlpf = ((mlpf * f3db * 1000) + (2766 * DS3000_XTAL_FREQ / 2))
+ / (2766 * DS3000_XTAL_FREQ);
+ if (nlpf > 23)
+ nlpf = 23;
+ if (nlpf < 1)
+ nlpf = 1;
+
+ /* rounded to the closest integer */
+ mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) +
+ (1000 * f3db / 2)) / (1000 * f3db);
+
+ if (mlpf_new < mlpf_min) {
+ nlpf++;
+ mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) +
+ (1000 * f3db / 2)) / (1000 * f3db);
+ }
+
+ if (mlpf_new > mlpf_max)
+ mlpf_new = mlpf_max;
+
+ ds3000_tuner_writereg(state, 0x04, mlpf_new);
+ ds3000_tuner_writereg(state, 0x06, nlpf);
+ ds3000_tuner_writereg(state, 0x51, 0x1b);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x04);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+ msleep(5);
+
+ /* unknown */
+ ds3000_tuner_writereg(state, 0x51, 0x1e);
+ ds3000_tuner_writereg(state, 0x51, 0x1f);
+ ds3000_tuner_writereg(state, 0x50, 0x01);
+ ds3000_tuner_writereg(state, 0x50, 0x00);
+ msleep(60);
+
+ /* ds3000 global reset */
+ ds3000_writereg(state, 0x07, 0x80);
+ ds3000_writereg(state, 0x07, 0x00);
+ /* ds3000 build-in uC reset */
+ ds3000_writereg(state, 0xb2, 0x01);
+ /* ds3000 software reset */
+ ds3000_writereg(state, 0x00, 0x01);
+
+ switch (c->delivery_system) {
+ case SYS_DVBS:
+ /* initialise the demod in DVB-S mode */
+ for (i = 0; i < sizeof(ds3000_dvbs_init_tab); i += 2)
+ ds3000_writereg(state,
+ ds3000_dvbs_init_tab[i],
+ ds3000_dvbs_init_tab[i + 1]);
+ value = ds3000_readreg(state, 0xfe);
+ value &= 0xc0;
+ value |= 0x1b;
+ ds3000_writereg(state, 0xfe, value);
+ break;
+ case SYS_DVBS2:
+ /* initialise the demod in DVB-S2 mode */
+ for (i = 0; i < sizeof(ds3000_dvbs2_init_tab); i += 2)
+ ds3000_writereg(state,
+ ds3000_dvbs2_init_tab[i],
+ ds3000_dvbs2_init_tab[i + 1]);
+ ds3000_writereg(state, 0xfe, 0x54);
+ break;
+ default:
+ return 1;
+ }
+
+ /* enable 27MHz clock output */
+ ds3000_writereg(state, 0x29, 0x80);
+ /* enable ac coupling */
+ ds3000_writereg(state, 0x25, 0x8a);
+
+ /* enhance symbol rate performance */
+ if ((state->dcur.symbol_rate / 1000) <= 5000) {
+ value = 29777 / (state->dcur.symbol_rate / 1000) + 1;
+ if (value % 2 != 0)
+ value++;
+ ds3000_writereg(state, 0xc3, 0x0d);
+ ds3000_writereg(state, 0xc8, value);
+ ds3000_writereg(state, 0xc4, 0x10);
+ ds3000_writereg(state, 0xc7, 0x0e);
+ } else if ((state->dcur.symbol_rate / 1000) <= 10000) {
+ value = 92166 / (state->dcur.symbol_rate / 1000) + 1;
+ if (value % 2 != 0)
+ value++;
+ ds3000_writereg(state, 0xc3, 0x07);
+ ds3000_writereg(state, 0xc8, value);
+ ds3000_writereg(state, 0xc4, 0x09);
+ ds3000_writereg(state, 0xc7, 0x12);
+ } else if ((state->dcur.symbol_rate / 1000) <= 20000) {
+ value = 64516 / (state->dcur.symbol_rate / 1000) + 1;
+ ds3000_writereg(state, 0xc3, value);
+ ds3000_writereg(state, 0xc8, 0x0e);
+ ds3000_writereg(state, 0xc4, 0x07);
+ ds3000_writereg(state, 0xc7, 0x18);
+ } else {
+ value = 129032 / (state->dcur.symbol_rate / 1000) + 1;
+ ds3000_writereg(state, 0xc3, value);
+ ds3000_writereg(state, 0xc8, 0x0a);
+ ds3000_writereg(state, 0xc4, 0x05);
+ ds3000_writereg(state, 0xc7, 0x24);
+ }
+
+ /* normalized symbol rate rounded to the closest integer */
+ value = (((state->dcur.symbol_rate / 1000) << 16) +
+ (DS3000_SAMPLE_RATE / 2)) / DS3000_SAMPLE_RATE;
+ ds3000_writereg(state, 0x61, value & 0x00ff);
+ ds3000_writereg(state, 0x62, (value & 0xff00) >> 8);
+
+ /* co-channel interference cancellation disabled */
+ ds3000_writereg(state, 0x56, 0x00);
+
+ /* equalizer disabled */
+ ds3000_writereg(state, 0x76, 0x00);
+
+ /*ds3000_writereg(state, 0x08, 0x03);
+ ds3000_writereg(state, 0xfd, 0x22);
+ ds3000_writereg(state, 0x08, 0x07);
+ ds3000_writereg(state, 0xfd, 0x42);
+ ds3000_writereg(state, 0x08, 0x07);*/
+
+ /* ds3000 out of software reset */
+ ds3000_writereg(state, 0x00, 0x00);
+ /* start ds3000 build-in uC */
+ ds3000_writereg(state, 0xb2, 0x00);
+
+ /* TODO: calculate and set carrier offset */
+
+ /* wait before retrying */
+ for (i = 0; i < 30 ; i++) {
+ if (ds3000_is_tuned(fe)) {
+ dprintk("%s: Tuned\n", __func__);
+ ds3000_dump_registers(fe);
+ goto tuned;
+ }
+ msleep(1);
+ }
+
+ dprintk("%s: Not tuned\n", __func__);
+ ds3000_dump_registers(fe);
+
+ } while (--retune);
+
+tuned:
+ return ret;
+}
+
+static enum dvbfe_algo ds3000_get_algo(struct dvb_frontend *fe)
+{
+ dprintk("%s()\n", __func__);
+ return DVBFE_ALGO_SW;
+}
+
+/*
+ * Initialise or wake up device
+ *
+ * Power config will reset and load initial firmware if required
+ */
+static int ds3000_initfe(struct dvb_frontend *fe)
+{
+ dprintk("%s()\n", __func__);
+ return 0;
+}
+
+/* Put device to sleep */
+static int ds3000_sleep(struct dvb_frontend *fe)
+{
+ dprintk("%s()\n", __func__);
+ return 0;
+}
+
+static struct dvb_frontend_ops ds3000_ops = {
+
+ .info = {
+ .name = "Montage Technology DS3000/TS2020",
+ .type = FE_QPSK,
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_stepsize = 1011, /* kHz for QPSK frontends */
+ .frequency_tolerance = 5000,
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 45000000,
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
+ FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+ FE_CAN_2G_MODULATION |
+ FE_CAN_QPSK | FE_CAN_RECOVER
+ },
+
+ .release = ds3000_release,
+
+ .init = ds3000_initfe,
+ .sleep = ds3000_sleep,
+ .read_status = ds3000_read_status,
+ .read_ber = ds3000_read_ber,
+ .read_signal_strength = ds3000_read_signal_strength,
+ .read_snr = ds3000_read_snr,
+ .read_ucblocks = ds3000_read_ucblocks,
+ .set_tone = ds3000_set_tone,
+ .diseqc_send_master_cmd = ds3000_send_diseqc_msg,
+ .diseqc_send_burst = ds3000_diseqc_send_burst,
+ .get_frontend_algo = ds3000_get_algo,
+
+ .set_property = ds3000_set_property,
+ .get_property = ds3000_get_property,
+ .set_frontend = ds3000_tune,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
+
+MODULE_DESCRIPTION("DVB Frontend module for Montage Technology "
+ "DS3000/TS2020 hardware");
+MODULE_AUTHOR("Konstantin Dimitrov");
+MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff