diff options
Diffstat (limited to 'drivers/media/dvb-frontends/ds3000.c')
| -rw-r--r-- | drivers/media/dvb-frontends/ds3000.c | 1134 |
1 files changed, 1134 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c new file mode 100644 index 0000000..1e344b0 --- /dev/null +++ b/drivers/media/dvb-frontends/ds3000.c @@ -0,0 +1,1134 @@ +/* + Montage Technology DS3000 - DVBS/S2 Demodulator driver + Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com> + + Copyright (C) 2009-2012 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 "ts2020.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 */ + +/* 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, +}; + +struct ds3000_state { + struct i2c_adapter *i2c; + const struct ds3000_config *config; + struct dvb_frontend frontend; + /* 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_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) +{ + struct ds3000_state *state = fe->demodulator_priv; + + if (enable) + ds3000_writereg(state, 0x03, 0x12); + else + ds3000_writereg(state, 0x03, 0x02); + + 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 = 0; + struct i2c_msg msg; + u8 *buf; + + buf = kmalloc(33, GFP_KERNEL); + if (buf == NULL) { + printk(KERN_ERR "Unable to kmalloc\n"); + return -ENOMEM; + } + + *(buf) = reg; + + msg.addr = state->config->demod_address; + msg.flags = 0; + msg.buf = buf; + msg.len = 33; + + for (i = 0; i < len; i += 32) { + memcpy(buf + 1, data + i, 32); + + 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; + goto error; + } + } + ret = 0; + +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_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__); + + ret = ds3000_readreg(state, 0xb2); + if (ret < 0) + return ret; + + /* 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; + } + + 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"); + + return ret; +} + +static int ds3000_load_firmware(struct dvb_frontend *fe, + const struct firmware *fw) +{ + struct ds3000_state *state = fe->demodulator_priv; + int ret = 0; + + 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 */ + ret = ds3000_writeFW(state, 0xb0, fw->data, fw->size); + ds3000_writereg(state, 0xb2, 0x00); + + return ret; +} + +static int ds3000_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) +{ + struct ds3000_state *state = fe->demodulator_priv; + u8 data; + + dprintk("%s(%d)\n", __func__, voltage); + + data = ds3000_readreg(state, 0xa2); + data |= 0x03; /* bit0 V/H, bit1 off/on */ + + switch (voltage) { + case SEC_VOLTAGE_18: + data &= ~0x03; + break; + case SEC_VOLTAGE_13: + data &= ~0x03; + data |= 0x01; + break; + case SEC_VOLTAGE_OFF: + break; + } + + ds3000_writereg(state, 0xa2, data); + + return 0; +} + +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; + } + + if (state->config->set_lock_led) + state->config->set_lock_led(fe, *status == 0 ? 0 : 1); + + dprintk("%s: status = 0x%02x\n", __func__, lock); + + return 0; +} + +/* 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; +} + +static int ds3000_read_signal_strength(struct dvb_frontend *fe, + u16 *signal_strength) +{ + if (fe->ops.tuner_ops.get_rf_strength) + fe->ops.tuner_ops.get_rf_strength(fe, 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 (tmp == 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; +} + +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; + + if (state->config->set_lock_led) + state->config->set_lock_led(fe, 0); + + 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 = kzalloc(sizeof(struct ds3000_state), GFP_KERNEL); + if (state == NULL) { + printk(KERN_ERR "Unable to kmalloc\n"); + goto error2; + } + + 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_carrier_offset(struct dvb_frontend *fe, + s32 carrier_offset_khz) +{ + struct ds3000_state *state = fe->demodulator_priv; + s32 tmp; + + tmp = carrier_offset_khz; + tmp *= 65536; + tmp = (2 * tmp + DS3000_SAMPLE_RATE) / (2 * DS3000_SAMPLE_RATE); + + if (tmp < 0) + tmp += 65536; + + ds3000_writereg(state, 0x5f, tmp >> 8); + ds3000_writereg(state, 0x5e, tmp & 0xff); + + return 0; +} + +static int ds3000_set_frontend(struct dvb_frontend *fe) +{ + struct ds3000_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + int i; + fe_status_t status; + s32 offset_khz; + u32 frequency; + u16 value; + + dprintk("%s() ", __func__); + + if (state->config->set_ts_params) + state->config->set_ts_params(fe, 0); + /* Tune */ + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + + /* 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]); + if (c->symbol_rate >= 30000000) + ds3000_writereg(state, 0xfe, 0x54); + else + ds3000_writereg(state, 0xfe, 0x98); + 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 ((c->symbol_rate / 1000) <= 5000) { + value = 29777 / (c->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 ((c->symbol_rate / 1000) <= 10000) { + value = 92166 / (c->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 ((c->symbol_rate / 1000) <= 20000) { + value = 64516 / (c->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 / (c->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 = (((c->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);*/ + + if (state->config->ci_mode) { + switch (c->delivery_system) { + case SYS_DVBS: + default: + ds3000_writereg(state, 0xfd, 0x80); + break; + case SYS_DVBS2: + ds3000_writereg(state, 0xfd, 0x01); + break; + } + } + + /* ds3000 out of software reset */ + ds3000_writereg(state, 0x00, 0x00); + /* start ds3000 build-in uC */ + ds3000_writereg(state, 0xb2, 0x00); + + if (fe->ops.tuner_ops.get_frequency) { + fe->ops.tuner_ops.get_frequency(fe, &frequency); + offset_khz = frequency - c->frequency; + ds3000_set_carrier_offset(fe, offset_khz); + } + + for (i = 0; i < 30 ; i++) { + ds3000_read_status(fe, &status); + if (status & FE_HAS_LOCK) + break; + + msleep(10); + } + + return 0; +} + +static int ds3000_tune(struct dvb_frontend *fe, + bool re_tune, + unsigned int mode_flags, + unsigned int *delay, + fe_status_t *status) +{ + if (re_tune) { + int ret = ds3000_set_frontend(fe); + if (ret) + return ret; + } + + *delay = HZ / 5; + + return ds3000_read_status(fe, status); +} + +static enum dvbfe_algo ds3000_get_algo(struct dvb_frontend *fe) +{ + struct ds3000_state *state = fe->demodulator_priv; + + if (state->config->set_lock_led) + state->config->set_lock_led(fe, 0); + + dprintk("%s()\n", __func__); + return DVBFE_ALGO_HW; +} + +/* + * Initialise or wake up device + * + * Power config will reset and load initial firmware if required + */ +static int ds3000_initfe(struct dvb_frontend *fe) +{ + struct ds3000_state *state = fe->demodulator_priv; + int ret; + + dprintk("%s()\n", __func__); + /* hard reset */ + ds3000_writereg(state, 0x08, 0x01 | ds3000_readreg(state, 0x08)); + msleep(1); + + /* Load the firmware if required */ + ret = ds3000_firmware_ondemand(fe); + if (ret != 0) { + printk(KERN_ERR "%s: Unable initialize firmware\n", __func__); + return ret; + } + + return 0; +} + +static struct dvb_frontend_ops ds3000_ops = { + .delsys = { SYS_DVBS, SYS_DVBS2 }, + .info = { + .name = "Montage Technology DS3000", + .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, + .i2c_gate_ctrl = ds3000_i2c_gate_ctrl, + .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_voltage = ds3000_set_voltage, + .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_frontend = ds3000_set_frontend, + .tune = 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 hardware"); +MODULE_AUTHOR("Konstantin Dimitrov <kosio.dimitrov@gmail.com>"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE(DS3000_DEFAULT_FIRMWARE); |