diff options
Diffstat (limited to 'drivers/media/dvb/frontends/lgdt330x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/lgdt330x.c | 831 |
1 files changed, 0 insertions, 831 deletions
diff --git a/drivers/media/dvb/frontends/lgdt330x.c b/drivers/media/dvb/frontends/lgdt330x.c deleted file mode 100644 index e046622df0e4..000000000000 --- a/drivers/media/dvb/frontends/lgdt330x.c +++ /dev/null @@ -1,831 +0,0 @@ -/* - * Support for LGDT3302 and LGDT3303 - VSB/QAM - * - * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net> - * - * 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. - * - */ - -/* - * NOTES ABOUT THIS DRIVER - * - * This Linux driver supports: - * DViCO FusionHDTV 3 Gold-Q - * DViCO FusionHDTV 3 Gold-T - * DViCO FusionHDTV 5 Gold - * DViCO FusionHDTV 5 Lite - * DViCO FusionHDTV 5 USB Gold - * Air2PC/AirStar 2 ATSC 3rd generation (HD5000) - * pcHDTV HD5500 - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <asm/byteorder.h> - -#include "dvb_frontend.h" -#include "dvb_math.h" -#include "lgdt330x_priv.h" -#include "lgdt330x.h" - -/* Use Equalizer Mean Squared Error instead of Phaser Tracker MSE */ -/* #define USE_EQMSE */ - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug,"Turn on/off lgdt330x frontend debugging (default:off)."); -#define dprintk(args...) \ -do { \ -if (debug) printk(KERN_DEBUG "lgdt330x: " args); \ -} while (0) - -struct lgdt330x_state -{ - struct i2c_adapter* i2c; - - /* Configuration settings */ - const struct lgdt330x_config* config; - - struct dvb_frontend frontend; - - /* Demodulator private data */ - fe_modulation_t current_modulation; - u32 snr; /* Result of last SNR calculation */ - - /* Tuner private data */ - u32 current_frequency; -}; - -static int i2c_write_demod_bytes (struct lgdt330x_state* state, - u8 *buf, /* data bytes to send */ - int len /* number of bytes to send */ ) -{ - struct i2c_msg msg = - { .addr = state->config->demod_address, - .flags = 0, - .buf = buf, - .len = 2 }; - int i; - int err; - - for (i=0; i<len-1; i+=2){ - if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) { - printk(KERN_WARNING "lgdt330x: %s error (addr %02x <- %02x, err = %i)\n", __func__, msg.buf[0], msg.buf[1], err); - if (err < 0) - return err; - else - return -EREMOTEIO; - } - msg.buf += 2; - } - return 0; -} - -/* - * This routine writes the register (reg) to the demod bus - * then reads the data returned for (len) bytes. - */ - -static int i2c_read_demod_bytes(struct lgdt330x_state *state, - enum I2C_REG reg, u8 *buf, int len) -{ - u8 wr [] = { reg }; - struct i2c_msg msg [] = { - { .addr = state->config->demod_address, - .flags = 0, .buf = wr, .len = 1 }, - { .addr = state->config->demod_address, - .flags = I2C_M_RD, .buf = buf, .len = len }, - }; - int ret; - ret = i2c_transfer(state->i2c, msg, 2); - if (ret != 2) { - printk(KERN_WARNING "lgdt330x: %s: addr 0x%02x select 0x%02x error (ret == %i)\n", __func__, state->config->demod_address, reg, ret); - if (ret >= 0) - ret = -EIO; - } else { - ret = 0; - } - return ret; -} - -/* Software reset */ -static int lgdt3302_SwReset(struct lgdt330x_state* state) -{ - u8 ret; - u8 reset[] = { - IRQ_MASK, - 0x00 /* bit 6 is active low software reset - * bits 5-0 are 1 to mask interrupts */ - }; - - ret = i2c_write_demod_bytes(state, - reset, sizeof(reset)); - if (ret == 0) { - - /* force reset high (inactive) and unmask interrupts */ - reset[1] = 0x7f; - ret = i2c_write_demod_bytes(state, - reset, sizeof(reset)); - } - return ret; -} - -static int lgdt3303_SwReset(struct lgdt330x_state* state) -{ - u8 ret; - u8 reset[] = { - 0x02, - 0x00 /* bit 0 is active low software reset */ - }; - - ret = i2c_write_demod_bytes(state, - reset, sizeof(reset)); - if (ret == 0) { - - /* force reset high (inactive) */ - reset[1] = 0x01; - ret = i2c_write_demod_bytes(state, - reset, sizeof(reset)); - } - return ret; -} - -static int lgdt330x_SwReset(struct lgdt330x_state* state) -{ - switch (state->config->demod_chip) { - case LGDT3302: - return lgdt3302_SwReset(state); - case LGDT3303: - return lgdt3303_SwReset(state); - default: - return -ENODEV; - } -} - -static int lgdt330x_init(struct dvb_frontend* fe) -{ - /* Hardware reset is done using gpio[0] of cx23880x chip. - * I'd like to do it here, but don't know how to find chip address. - * cx88-cards.c arranges for the reset bit to be inactive (high). - * Maybe there needs to be a callable function in cx88-core or - * the caller of this function needs to do it. */ - - /* - * Array of byte pairs <address, value> - * to initialize each different chip - */ - static u8 lgdt3302_init_data[] = { - /* Use 50MHz parameter values from spec sheet since xtal is 50 */ - /* Change the value of NCOCTFV[25:0] of carrier - recovery center frequency register */ - VSB_CARRIER_FREQ0, 0x00, - VSB_CARRIER_FREQ1, 0x87, - VSB_CARRIER_FREQ2, 0x8e, - VSB_CARRIER_FREQ3, 0x01, - /* Change the TPCLK pin polarity - data is valid on falling clock */ - DEMUX_CONTROL, 0xfb, - /* Change the value of IFBW[11:0] of - AGC IF/RF loop filter bandwidth register */ - AGC_RF_BANDWIDTH0, 0x40, - AGC_RF_BANDWIDTH1, 0x93, - AGC_RF_BANDWIDTH2, 0x00, - /* Change the value of bit 6, 'nINAGCBY' and - 'NSSEL[1:0] of ACG function control register 2 */ - AGC_FUNC_CTRL2, 0xc6, - /* Change the value of bit 6 'RFFIX' - of AGC function control register 3 */ - AGC_FUNC_CTRL3, 0x40, - /* Set the value of 'INLVTHD' register 0x2a/0x2c - to 0x7fe */ - AGC_DELAY0, 0x07, - AGC_DELAY2, 0xfe, - /* Change the value of IAGCBW[15:8] - of inner AGC loop filter bandwidth */ - AGC_LOOP_BANDWIDTH0, 0x08, - AGC_LOOP_BANDWIDTH1, 0x9a - }; - - static u8 lgdt3303_init_data[] = { - 0x4c, 0x14 - }; - - static u8 flip_1_lgdt3303_init_data[] = { - 0x4c, 0x14, - 0x87, 0xf3 - }; - - static u8 flip_2_lgdt3303_init_data[] = { - 0x4c, 0x14, - 0x87, 0xda - }; - - struct lgdt330x_state* state = fe->demodulator_priv; - char *chip_name; - int err; - - switch (state->config->demod_chip) { - case LGDT3302: - chip_name = "LGDT3302"; - err = i2c_write_demod_bytes(state, lgdt3302_init_data, - sizeof(lgdt3302_init_data)); - break; - case LGDT3303: - chip_name = "LGDT3303"; - switch (state->config->clock_polarity_flip) { - case 2: - err = i2c_write_demod_bytes(state, - flip_2_lgdt3303_init_data, - sizeof(flip_2_lgdt3303_init_data)); - break; - case 1: - err = i2c_write_demod_bytes(state, - flip_1_lgdt3303_init_data, - sizeof(flip_1_lgdt3303_init_data)); - break; - case 0: - default: - err = i2c_write_demod_bytes(state, lgdt3303_init_data, - sizeof(lgdt3303_init_data)); - } - break; - default: - chip_name = "undefined"; - printk (KERN_WARNING "Only LGDT3302 and LGDT3303 are supported chips.\n"); - err = -ENODEV; - } - dprintk("%s entered as %s\n", __func__, chip_name); - if (err < 0) - return err; - return lgdt330x_SwReset(state); -} - -static int lgdt330x_read_ber(struct dvb_frontend* fe, u32* ber) -{ - *ber = 0; /* Not supplied by the demod chips */ - return 0; -} - -static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) -{ - struct lgdt330x_state* state = fe->demodulator_priv; - int err; - u8 buf[2]; - - *ucblocks = 0; - - switch (state->config->demod_chip) { - case LGDT3302: - err = i2c_read_demod_bytes(state, LGDT3302_PACKET_ERR_COUNTER1, - buf, sizeof(buf)); - break; - case LGDT3303: - err = i2c_read_demod_bytes(state, LGDT3303_PACKET_ERR_COUNTER1, - buf, sizeof(buf)); - break; - default: - printk(KERN_WARNING - "Only LGDT3302 and LGDT3303 are supported chips.\n"); - err = -ENODEV; - } - if (err < 0) - return err; - - *ucblocks = (buf[0] << 8) | buf[1]; - return 0; -} - -static int lgdt330x_set_parameters(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - /* - * Array of byte pairs <address, value> - * to initialize 8VSB for lgdt3303 chip 50 MHz IF - */ - static u8 lgdt3303_8vsb_44_data[] = { - 0x04, 0x00, - 0x0d, 0x40, - 0x0e, 0x87, - 0x0f, 0x8e, - 0x10, 0x01, - 0x47, 0x8b }; - - /* - * Array of byte pairs <address, value> - * to initialize QAM for lgdt3303 chip - */ - static u8 lgdt3303_qam_data[] = { - 0x04, 0x00, - 0x0d, 0x00, - 0x0e, 0x00, - 0x0f, 0x00, - 0x10, 0x00, - 0x51, 0x63, - 0x47, 0x66, - 0x48, 0x66, - 0x4d, 0x1a, - 0x49, 0x08, - 0x4a, 0x9b }; - - struct lgdt330x_state* state = fe->demodulator_priv; - - static u8 top_ctrl_cfg[] = { TOP_CONTROL, 0x03 }; - - int err = 0; - /* Change only if we are actually changing the modulation */ - if (state->current_modulation != p->modulation) { - switch (p->modulation) { - case VSB_8: - dprintk("%s: VSB_8 MODE\n", __func__); - - /* Select VSB mode */ - top_ctrl_cfg[1] = 0x03; - - /* Select ANT connector if supported by card */ - if (state->config->pll_rf_set) - state->config->pll_rf_set(fe, 1); - - if (state->config->demod_chip == LGDT3303) { - err = i2c_write_demod_bytes(state, lgdt3303_8vsb_44_data, - sizeof(lgdt3303_8vsb_44_data)); - } - break; - - case QAM_64: - dprintk("%s: QAM_64 MODE\n", __func__); - - /* Select QAM_64 mode */ - top_ctrl_cfg[1] = 0x00; - - /* Select CABLE connector if supported by card */ - if (state->config->pll_rf_set) - state->config->pll_rf_set(fe, 0); - - if (state->config->demod_chip == LGDT3303) { - err = i2c_write_demod_bytes(state, lgdt3303_qam_data, - sizeof(lgdt3303_qam_data)); - } - break; - - case QAM_256: - dprintk("%s: QAM_256 MODE\n", __func__); - - /* Select QAM_256 mode */ - top_ctrl_cfg[1] = 0x01; - - /* Select CABLE connector if supported by card */ - if (state->config->pll_rf_set) - state->config->pll_rf_set(fe, 0); - - if (state->config->demod_chip == LGDT3303) { - err = i2c_write_demod_bytes(state, lgdt3303_qam_data, - sizeof(lgdt3303_qam_data)); - } - break; - default: - printk(KERN_WARNING "lgdt330x: %s: Modulation type(%d) UNSUPPORTED\n", __func__, p->modulation); - return -1; - } - if (err < 0) - printk(KERN_WARNING "lgdt330x: %s: error blasting " - "bytes to lgdt3303 for modulation type(%d)\n", - __func__, p->modulation); - - /* - * select serial or parallel MPEG harware interface - * Serial: 0x04 for LGDT3302 or 0x40 for LGDT3303 - * Parallel: 0x00 - */ - top_ctrl_cfg[1] |= state->config->serial_mpeg; - - /* Select the requested mode */ - i2c_write_demod_bytes(state, top_ctrl_cfg, - sizeof(top_ctrl_cfg)); - if (state->config->set_ts_params) - state->config->set_ts_params(fe, 0); - state->current_modulation = p->modulation; - } - - /* Tune to the specified 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); - } - - /* Keep track of the new frequency */ - /* FIXME this is the wrong way to do this... */ - /* The tuner is shared with the video4linux analog API */ - state->current_frequency = p->frequency; - - lgdt330x_SwReset(state); - return 0; -} - -static int lgdt330x_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct lgdt330x_state *state = fe->demodulator_priv; - p->frequency = state->current_frequency; - return 0; -} - -static int lgdt3302_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct lgdt330x_state* state = fe->demodulator_priv; - u8 buf[3]; - - *status = 0; /* Reset status result */ - - /* AGC status register */ - i2c_read_demod_bytes(state, AGC_STATUS, buf, 1); - dprintk("%s: AGC_STATUS = 0x%02x\n", __func__, buf[0]); - if ((buf[0] & 0x0c) == 0x8){ - /* Test signal does not exist flag */ - /* as well as the AGC lock flag. */ - *status |= FE_HAS_SIGNAL; - } - - /* - * You must set the Mask bits to 1 in the IRQ_MASK in order - * to see that status bit in the IRQ_STATUS register. - * This is done in SwReset(); - */ - /* signal status */ - i2c_read_demod_bytes(state, TOP_CONTROL, buf, sizeof(buf)); - dprintk("%s: TOP_CONTROL = 0x%02x, IRO_MASK = 0x%02x, IRQ_STATUS = 0x%02x\n", __func__, buf[0], buf[1], buf[2]); - - - /* sync status */ - if ((buf[2] & 0x03) == 0x01) { - *status |= FE_HAS_SYNC; - } - - /* FEC error status */ - if ((buf[2] & 0x0c) == 0x08) { - *status |= FE_HAS_LOCK; - *status |= FE_HAS_VITERBI; - } - - /* Carrier Recovery Lock Status Register */ - i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1); - dprintk("%s: CARRIER_LOCK = 0x%02x\n", __func__, buf[0]); - switch (state->current_modulation) { - case QAM_256: - case QAM_64: - /* Need to understand why there are 3 lock levels here */ - if ((buf[0] & 0x07) == 0x07) - *status |= FE_HAS_CARRIER; - break; - case VSB_8: - if ((buf[0] & 0x80) == 0x80) - *status |= FE_HAS_CARRIER; - break; - default: - printk(KERN_WARNING "lgdt330x: %s: Modulation set to unsupported value\n", __func__); - } - - return 0; -} - -static int lgdt3303_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct lgdt330x_state* state = fe->demodulator_priv; - int err; - u8 buf[3]; - - *status = 0; /* Reset status result */ - - /* lgdt3303 AGC status register */ - err = i2c_read_demod_bytes(state, 0x58, buf, 1); - if (err < 0) - return err; - - dprintk("%s: AGC_STATUS = 0x%02x\n", __func__, buf[0]); - if ((buf[0] & 0x21) == 0x01){ - /* Test input signal does not exist flag */ - /* as well as the AGC lock flag. */ - *status |= FE_HAS_SIGNAL; - } - - /* Carrier Recovery Lock Status Register */ - i2c_read_demod_bytes(state, CARRIER_LOCK, buf, 1); - dprintk("%s: CARRIER_LOCK = 0x%02x\n", __func__, buf[0]); - switch (state->current_modulation) { - case QAM_256: - case QAM_64: - /* Need to understand why there are 3 lock levels here */ - if ((buf[0] & 0x07) == 0x07) - *status |= FE_HAS_CARRIER; - else - break; - i2c_read_demod_bytes(state, 0x8a, buf, 1); - if ((buf[0] & 0x04) == 0x04) - *status |= FE_HAS_SYNC; - if ((buf[0] & 0x01) == 0x01) - *status |= FE_HAS_LOCK; - if ((buf[0] & 0x08) == 0x08) - *status |= FE_HAS_VITERBI; - break; - case VSB_8: - if ((buf[0] & 0x80) == 0x80) - *status |= FE_HAS_CARRIER; - else - break; - i2c_read_demod_bytes(state, 0x38, buf, 1); - if ((buf[0] & 0x02) == 0x00) - *status |= FE_HAS_SYNC; - if ((buf[0] & 0x01) == 0x01) { - *status |= FE_HAS_LOCK; - *status |= FE_HAS_VITERBI; - } - break; - default: - printk(KERN_WARNING "lgdt330x: %s: Modulation set to unsupported value\n", __func__); - } - return 0; -} - -/* Calculate SNR estimation (scaled by 2^24) - - 8-VSB SNR equations from LGDT3302 and LGDT3303 datasheets, QAM - equations from LGDT3303 datasheet. VSB is the same between the '02 - and '03, so maybe QAM is too? Perhaps someone with a newer datasheet - that has QAM information could verify? - - For 8-VSB: (two ways, take your pick) - LGDT3302: - SNR_EQ = 10 * log10(25 * 24^2 / EQ_MSE) - LGDT3303: - SNR_EQ = 10 * log10(25 * 32^2 / EQ_MSE) - LGDT3302 & LGDT3303: - SNR_PT = 10 * log10(25 * 32^2 / PT_MSE) (we use this one) - For 64-QAM: - SNR = 10 * log10( 688128 / MSEQAM) - For 256-QAM: - SNR = 10 * log10( 696320 / MSEQAM) - - We re-write the snr equation as: - SNR * 2^24 = 10*(c - intlog10(MSE)) - Where for 256-QAM, c = log10(696320) * 2^24, and so on. */ - -static u32 calculate_snr(u32 mse, u32 c) -{ - if (mse == 0) /* No signal */ - return 0; - - mse = intlog10(mse); - if (mse > c) { - /* Negative SNR, which is possible, but realisticly the - demod will lose lock before the signal gets this bad. The - API only allows for unsigned values, so just return 0 */ - return 0; - } - return 10*(c - mse); -} - -static int lgdt3302_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; - u8 buf[5]; /* read data buffer */ - u32 noise; /* noise value */ - u32 c; /* per-modulation SNR calculation constant */ - - switch(state->current_modulation) { - case VSB_8: - i2c_read_demod_bytes(state, LGDT3302_EQPH_ERR0, buf, 5); -#ifdef USE_EQMSE - /* Use Equalizer Mean-Square Error Register */ - /* SNR for ranges from -15.61 to +41.58 */ - noise = ((buf[0] & 7) << 16) | (buf[1] << 8) | buf[2]; - c = 69765745; /* log10(25*24^2)*2^24 */ -#else - /* Use Phase Tracker Mean-Square Error Register */ - /* SNR for ranges from -13.11 to +44.08 */ - noise = ((buf[0] & 7<<3) << 13) | (buf[3] << 8) | buf[4]; - c = 73957994; /* log10(25*32^2)*2^24 */ -#endif - break; - case QAM_64: - case QAM_256: - i2c_read_demod_bytes(state, CARRIER_MSEQAM1, buf, 2); - noise = ((buf[0] & 3) << 8) | buf[1]; - c = state->current_modulation == QAM_64 ? 97939837 : 98026066; - /* log10(688128)*2^24 and log10(696320)*2^24 */ - break; - default: - printk(KERN_ERR "lgdt330x: %s: Modulation set to unsupported value\n", - __func__); - return -EREMOTEIO; /* return -EDRIVER_IS_GIBBERED; */ - } - - state->snr = calculate_snr(noise, c); - *snr = (state->snr) >> 16; /* Convert from 8.24 fixed-point to 8.8 */ - - dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise, - state->snr >> 24, (((state->snr>>8) & 0xffff) * 100) >> 16); - - return 0; -} - -static int lgdt3303_read_snr(struct dvb_frontend* fe, u16* snr) -{ - struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; - u8 buf[5]; /* read data buffer */ - u32 noise; /* noise value */ - u32 c; /* per-modulation SNR calculation constant */ - - switch(state->current_modulation) { - case VSB_8: - i2c_read_demod_bytes(state, LGDT3303_EQPH_ERR0, buf, 5); -#ifdef USE_EQMSE - /* Use Equalizer Mean-Square Error Register */ - /* SNR for ranges from -16.12 to +44.08 */ - noise = ((buf[0] & 0x78) << 13) | (buf[1] << 8) | buf[2]; - c = 73957994; /* log10(25*32^2)*2^24 */ -#else - /* Use Phase Tracker Mean-Square Error Register */ - /* SNR for ranges from -13.11 to +44.08 */ - noise = ((buf[0] & 7) << 16) | (buf[3] << 8) | buf[4]; - c = 73957994; /* log10(25*32^2)*2^24 */ -#endif - break; - case QAM_64: - case QAM_256: - i2c_read_demod_bytes(state, CARRIER_MSEQAM1, buf, 2); - noise = (buf[0] << 8) | buf[1]; - c = state->current_modulation == QAM_64 ? 97939837 : 98026066; - /* log10(688128)*2^24 and log10(696320)*2^24 */ - break; - default: - printk(KERN_ERR "lgdt330x: %s: Modulation set to unsupported value\n", - __func__); - return -EREMOTEIO; /* return -EDRIVER_IS_GIBBERED; */ - } - - state->snr = calculate_snr(noise, c); - *snr = (state->snr) >> 16; /* Convert from 8.24 fixed-point to 8.8 */ - - dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise, - state->snr >> 24, (((state->snr >> 8) & 0xffff) * 100) >> 16); - - return 0; -} - -static int lgdt330x_read_signal_strength(struct dvb_frontend* fe, u16* strength) -{ - /* Calculate Strength from SNR up to 35dB */ - /* Even though the SNR can go higher than 35dB, there is some comfort */ - /* factor in having a range of strong signals that can show at 100% */ - struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; - u16 snr; - int ret; - - ret = fe->ops.read_snr(fe, &snr); - if (ret != 0) - return ret; - /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */ - /* scale the range 0 - 35*2^24 into 0 - 65535 */ - if (state->snr >= 8960 * 0x10000) - *strength = 0xffff; - else - *strength = state->snr / 8960; - - return 0; -} - -static int lgdt330x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings) -{ - /* I have no idea about this - it may not be needed */ - fe_tune_settings->min_delay_ms = 500; - fe_tune_settings->step_size = 0; - fe_tune_settings->max_drift = 0; - return 0; -} - -static void lgdt330x_release(struct dvb_frontend* fe) -{ - struct lgdt330x_state* state = (struct lgdt330x_state*) fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops lgdt3302_ops; -static struct dvb_frontend_ops lgdt3303_ops; - -struct dvb_frontend* lgdt330x_attach(const struct lgdt330x_config* config, - struct i2c_adapter* i2c) -{ - struct lgdt330x_state* state = NULL; - u8 buf[1]; - - /* Allocate memory for the internal state */ - state = kzalloc(sizeof(struct lgdt330x_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* Setup the state */ - state->config = config; - state->i2c = i2c; - - /* Create dvb_frontend */ - switch (config->demod_chip) { - case LGDT3302: - memcpy(&state->frontend.ops, &lgdt3302_ops, sizeof(struct dvb_frontend_ops)); - break; - case LGDT3303: - memcpy(&state->frontend.ops, &lgdt3303_ops, sizeof(struct dvb_frontend_ops)); - break; - default: - goto error; - } - state->frontend.demodulator_priv = state; - - /* Verify communication with demod chip */ - if (i2c_read_demod_bytes(state, 2, buf, 1)) - goto error; - - state->current_frequency = -1; - state->current_modulation = -1; - - return &state->frontend; - -error: - kfree(state); - dprintk("%s: ERROR\n",__func__); - return NULL; -} - -static struct dvb_frontend_ops lgdt3302_ops = { - .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, - .info = { - .name= "LG Electronics LGDT3302 VSB/QAM Frontend", - .frequency_min= 54000000, - .frequency_max= 858000000, - .frequency_stepsize= 62500, - .symbol_rate_min = 5056941, /* QAM 64 */ - .symbol_rate_max = 10762000, /* VSB 8 */ - .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB - }, - .init = lgdt330x_init, - .set_frontend = lgdt330x_set_parameters, - .get_frontend = lgdt330x_get_frontend, - .get_tune_settings = lgdt330x_get_tune_settings, - .read_status = lgdt3302_read_status, - .read_ber = lgdt330x_read_ber, - .read_signal_strength = lgdt330x_read_signal_strength, - .read_snr = lgdt3302_read_snr, - .read_ucblocks = lgdt330x_read_ucblocks, - .release = lgdt330x_release, -}; - -static struct dvb_frontend_ops lgdt3303_ops = { - .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, - .info = { - .name= "LG Electronics LGDT3303 VSB/QAM Frontend", - .frequency_min= 54000000, - .frequency_max= 858000000, - .frequency_stepsize= 62500, - .symbol_rate_min = 5056941, /* QAM 64 */ - .symbol_rate_max = 10762000, /* VSB 8 */ - .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB - }, - .init = lgdt330x_init, - .set_frontend = lgdt330x_set_parameters, - .get_frontend = lgdt330x_get_frontend, - .get_tune_settings = lgdt330x_get_tune_settings, - .read_status = lgdt3303_read_status, - .read_ber = lgdt330x_read_ber, - .read_signal_strength = lgdt330x_read_signal_strength, - .read_snr = lgdt3303_read_snr, - .read_ucblocks = lgdt330x_read_ucblocks, - .release = lgdt330x_release, -}; - -MODULE_DESCRIPTION("LGDT330X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver"); -MODULE_AUTHOR("Wilson Michaels"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(lgdt330x_attach); - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |