diff options
Diffstat (limited to 'drivers/media/dvb/frontends/nxt200x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/nxt200x.c | 1242 |
1 files changed, 0 insertions, 1242 deletions
diff --git a/drivers/media/dvb/frontends/nxt200x.c b/drivers/media/dvb/frontends/nxt200x.c deleted file mode 100644 index 8e288940a61f..000000000000 --- a/drivers/media/dvb/frontends/nxt200x.c +++ /dev/null @@ -1,1242 +0,0 @@ -/* - * Support for NXT2002 and NXT2004 - VSB/QAM - * - * Copyright (C) 2005 Kirk Lapray <kirk.lapray@gmail.com> - * Copyright (C) 2006 Michael Krufky <mkrufky@m1k.net> - * based on nxt2002 by Taylor Jacob <rtjacob@earthlink.net> - * and nxt2004 by Jean-Francois Thibert <jeanfrancois@sagetv.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. - * -*/ - -/* - * NOTES ABOUT THIS DRIVER - * - * This Linux driver supports: - * B2C2/BBTI Technisat Air2PC - ATSC (NXT2002) - * AverTVHD MCE A180 (NXT2004) - * ATI HDTV Wonder (NXT2004) - * - * This driver needs external firmware. Please use the command - * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2002" or - * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2004" to - * download/extract the appropriate firmware, and then copy it to - * /usr/lib/hotplug/firmware/ or /lib/firmware/ - * (depending on configuration of firmware hotplug). - */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#define NXT2002_DEFAULT_FIRMWARE "dvb-fe-nxt2002.fw" -#define NXT2004_DEFAULT_FIRMWARE "dvb-fe-nxt2004.fw" -#define CRC_CCIT_MASK 0x1021 - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/string.h> - -#include "dvb_frontend.h" -#include "nxt200x.h" - -struct nxt200x_state { - - struct i2c_adapter* i2c; - const struct nxt200x_config* config; - struct dvb_frontend frontend; - - /* demodulator private data */ - nxt_chip_type demod_chip; - u8 initialised:1; -}; - -static int debug; -#define dprintk(args...) do { if (debug) pr_debug(args); } while (0) - -static int i2c_writebytes (struct nxt200x_state* state, u8 addr, u8 *buf, u8 len) -{ - int err; - struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = buf, .len = len }; - - if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) { - pr_warn("%s: i2c write error (addr 0x%02x, err == %i)\n", - __func__, addr, err); - return -EREMOTEIO; - } - return 0; -} - -static int i2c_readbytes(struct nxt200x_state *state, u8 addr, u8 *buf, u8 len) -{ - int err; - struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, .buf = buf, .len = len }; - - if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) { - pr_warn("%s: i2c read error (addr 0x%02x, err == %i)\n", - __func__, addr, err); - return -EREMOTEIO; - } - return 0; -} - -static int nxt200x_writebytes (struct nxt200x_state* state, u8 reg, - const u8 *buf, u8 len) -{ - u8 buf2 [len+1]; - int err; - struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf2, .len = len + 1 }; - - buf2[0] = reg; - memcpy(&buf2[1], buf, len); - - if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) { - pr_warn("%s: i2c write error (addr 0x%02x, err == %i)\n", - __func__, state->config->demod_address, err); - return -EREMOTEIO; - } - return 0; -} - -static int nxt200x_readbytes(struct nxt200x_state *state, u8 reg, u8 *buf, u8 len) -{ - u8 reg2 [] = { reg }; - - struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = reg2, .len = 1 }, - { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len } }; - - int err; - - if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) { - pr_warn("%s: i2c read error (addr 0x%02x, err == %i)\n", - __func__, state->config->demod_address, err); - return -EREMOTEIO; - } - return 0; -} - -static u16 nxt200x_crc(u16 crc, u8 c) -{ - u8 i; - u16 input = (u16) c & 0xFF; - - input<<=8; - for(i=0; i<8; i++) { - if((crc^input) & 0x8000) - crc=(crc<<1)^CRC_CCIT_MASK; - else - crc<<=1; - input<<=1; - } - return crc; -} - -static int nxt200x_writereg_multibyte (struct nxt200x_state* state, u8 reg, u8* data, u8 len) -{ - u8 attr, len2, buf; - dprintk("%s\n", __func__); - - /* set mutli register register */ - nxt200x_writebytes(state, 0x35, ®, 1); - - /* send the actual data */ - nxt200x_writebytes(state, 0x36, data, len); - - switch (state->demod_chip) { - case NXT2002: - len2 = len; - buf = 0x02; - break; - case NXT2004: - /* probably not right, but gives correct values */ - attr = 0x02; - if (reg & 0x80) { - attr = attr << 1; - if (reg & 0x04) - attr = attr >> 1; - } - /* set write bit */ - len2 = ((attr << 4) | 0x10) | len; - buf = 0x80; - break; - default: - return -EINVAL; - break; - } - - /* set multi register length */ - nxt200x_writebytes(state, 0x34, &len2, 1); - - /* toggle the multireg write bit */ - nxt200x_writebytes(state, 0x21, &buf, 1); - - nxt200x_readbytes(state, 0x21, &buf, 1); - - switch (state->demod_chip) { - case NXT2002: - if ((buf & 0x02) == 0) - return 0; - break; - case NXT2004: - if (buf == 0) - return 0; - break; - default: - return -EINVAL; - break; - } - - pr_warn("Error writing multireg register 0x%02X\n", reg); - - return 0; -} - -static int nxt200x_readreg_multibyte (struct nxt200x_state* state, u8 reg, u8* data, u8 len) -{ - int i; - u8 buf, len2, attr; - dprintk("%s\n", __func__); - - /* set mutli register register */ - nxt200x_writebytes(state, 0x35, ®, 1); - - switch (state->demod_chip) { - case NXT2002: - /* set multi register length */ - len2 = len & 0x80; - nxt200x_writebytes(state, 0x34, &len2, 1); - - /* read the actual data */ - nxt200x_readbytes(state, reg, data, len); - return 0; - break; - case NXT2004: - /* probably not right, but gives correct values */ - attr = 0x02; - if (reg & 0x80) { - attr = attr << 1; - if (reg & 0x04) - attr = attr >> 1; - } - - /* set multi register length */ - len2 = (attr << 4) | len; - nxt200x_writebytes(state, 0x34, &len2, 1); - - /* toggle the multireg bit*/ - buf = 0x80; - nxt200x_writebytes(state, 0x21, &buf, 1); - - /* read the actual data */ - for(i = 0; i < len; i++) { - nxt200x_readbytes(state, 0x36 + i, &data[i], 1); - } - return 0; - break; - default: - return -EINVAL; - break; - } -} - -static void nxt200x_microcontroller_stop (struct nxt200x_state* state) -{ - u8 buf, stopval, counter = 0; - dprintk("%s\n", __func__); - - /* set correct stop value */ - switch (state->demod_chip) { - case NXT2002: - stopval = 0x40; - break; - case NXT2004: - stopval = 0x10; - break; - default: - stopval = 0; - break; - } - - buf = 0x80; - nxt200x_writebytes(state, 0x22, &buf, 1); - - while (counter < 20) { - nxt200x_readbytes(state, 0x31, &buf, 1); - if (buf & stopval) - return; - msleep(10); - counter++; - } - - pr_warn("Timeout waiting for nxt200x to stop. This is ok after " - "firmware upload.\n"); - return; -} - -static void nxt200x_microcontroller_start (struct nxt200x_state* state) -{ - u8 buf; - dprintk("%s\n", __func__); - - buf = 0x00; - nxt200x_writebytes(state, 0x22, &buf, 1); -} - -static void nxt2004_microcontroller_init (struct nxt200x_state* state) -{ - u8 buf[9]; - u8 counter = 0; - dprintk("%s\n", __func__); - - buf[0] = 0x00; - nxt200x_writebytes(state, 0x2b, buf, 1); - buf[0] = 0x70; - nxt200x_writebytes(state, 0x34, buf, 1); - buf[0] = 0x04; - nxt200x_writebytes(state, 0x35, buf, 1); - buf[0] = 0x01; buf[1] = 0x23; buf[2] = 0x45; buf[3] = 0x67; buf[4] = 0x89; - buf[5] = 0xAB; buf[6] = 0xCD; buf[7] = 0xEF; buf[8] = 0xC0; - nxt200x_writebytes(state, 0x36, buf, 9); - buf[0] = 0x80; - nxt200x_writebytes(state, 0x21, buf, 1); - - while (counter < 20) { - nxt200x_readbytes(state, 0x21, buf, 1); - if (buf[0] == 0) - return; - msleep(10); - counter++; - } - - pr_warn("Timeout waiting for nxt2004 to init.\n"); - - return; -} - -static int nxt200x_writetuner (struct nxt200x_state* state, u8* data) -{ - u8 buf, count = 0; - - dprintk("%s\n", __func__); - - dprintk("Tuner Bytes: %*ph\n", 4, data + 1); - - /* if NXT2004, write directly to tuner. if NXT2002, write through NXT chip. - * direct write is required for Philips TUV1236D and ALPS TDHU2 */ - switch (state->demod_chip) { - case NXT2004: - if (i2c_writebytes(state, data[0], data+1, 4)) - pr_warn("error writing to tuner\n"); - /* wait until we have a lock */ - while (count < 20) { - i2c_readbytes(state, data[0], &buf, 1); - if (buf & 0x40) - return 0; - msleep(100); - count++; - } - pr_warn("timeout waiting for tuner lock\n"); - break; - case NXT2002: - /* set the i2c transfer speed to the tuner */ - buf = 0x03; - nxt200x_writebytes(state, 0x20, &buf, 1); - - /* setup to transfer 4 bytes via i2c */ - buf = 0x04; - nxt200x_writebytes(state, 0x34, &buf, 1); - - /* write actual tuner bytes */ - nxt200x_writebytes(state, 0x36, data+1, 4); - - /* set tuner i2c address */ - buf = data[0] << 1; - nxt200x_writebytes(state, 0x35, &buf, 1); - - /* write UC Opmode to begin transfer */ - buf = 0x80; - nxt200x_writebytes(state, 0x21, &buf, 1); - - while (count < 20) { - nxt200x_readbytes(state, 0x21, &buf, 1); - if ((buf & 0x80)== 0x00) - return 0; - msleep(100); - count++; - } - pr_warn("timeout error writing to tuner\n"); - break; - default: - return -EINVAL; - break; - } - return 0; -} - -static void nxt200x_agc_reset(struct nxt200x_state* state) -{ - u8 buf; - dprintk("%s\n", __func__); - - switch (state->demod_chip) { - case NXT2002: - buf = 0x08; - nxt200x_writebytes(state, 0x08, &buf, 1); - buf = 0x00; - nxt200x_writebytes(state, 0x08, &buf, 1); - break; - case NXT2004: - nxt200x_readreg_multibyte(state, 0x08, &buf, 1); - buf = 0x08; - nxt200x_writereg_multibyte(state, 0x08, &buf, 1); - buf = 0x00; - nxt200x_writereg_multibyte(state, 0x08, &buf, 1); - break; - default: - break; - } - return; -} - -static int nxt2002_load_firmware (struct dvb_frontend* fe, const struct firmware *fw) -{ - - struct nxt200x_state* state = fe->demodulator_priv; - u8 buf[3], written = 0, chunkpos = 0; - u16 rambase, position, crc = 0; - - dprintk("%s\n", __func__); - dprintk("Firmware is %zu bytes\n", fw->size); - - /* Get the RAM base for this nxt2002 */ - nxt200x_readbytes(state, 0x10, buf, 1); - - if (buf[0] & 0x10) - rambase = 0x1000; - else - rambase = 0x0000; - - dprintk("rambase on this nxt2002 is %04X\n", rambase); - - /* Hold the micro in reset while loading firmware */ - buf[0] = 0x80; - nxt200x_writebytes(state, 0x2B, buf, 1); - - for (position = 0; position < fw->size; position++) { - if (written == 0) { - crc = 0; - chunkpos = 0x28; - buf[0] = ((rambase + position) >> 8); - buf[1] = (rambase + position) & 0xFF; - buf[2] = 0x81; - /* write starting address */ - nxt200x_writebytes(state, 0x29, buf, 3); - } - written++; - chunkpos++; - - if ((written % 4) == 0) - nxt200x_writebytes(state, chunkpos, &fw->data[position-3], 4); - - crc = nxt200x_crc(crc, fw->data[position]); - - if ((written == 255) || (position+1 == fw->size)) { - /* write remaining bytes of firmware */ - nxt200x_writebytes(state, chunkpos+4-(written %4), - &fw->data[position-(written %4) + 1], - written %4); - buf[0] = crc << 8; - buf[1] = crc & 0xFF; - - /* write crc */ - nxt200x_writebytes(state, 0x2C, buf, 2); - - /* do a read to stop things */ - nxt200x_readbytes(state, 0x2A, buf, 1); - - /* set transfer mode to complete */ - buf[0] = 0x80; - nxt200x_writebytes(state, 0x2B, buf, 1); - - written = 0; - } - } - - return 0; -}; - -static int nxt2004_load_firmware (struct dvb_frontend* fe, const struct firmware *fw) -{ - - struct nxt200x_state* state = fe->demodulator_priv; - u8 buf[3]; - u16 rambase, position, crc=0; - - dprintk("%s\n", __func__); - dprintk("Firmware is %zu bytes\n", fw->size); - - /* set rambase */ - rambase = 0x1000; - - /* hold the micro in reset while loading firmware */ - buf[0] = 0x80; - nxt200x_writebytes(state, 0x2B, buf,1); - - /* calculate firmware CRC */ - for (position = 0; position < fw->size; position++) { - crc = nxt200x_crc(crc, fw->data[position]); - } - - buf[0] = rambase >> 8; - buf[1] = rambase & 0xFF; - buf[2] = 0x81; - /* write starting address */ - nxt200x_writebytes(state,0x29,buf,3); - - for (position = 0; position < fw->size;) { - nxt200x_writebytes(state, 0x2C, &fw->data[position], - fw->size-position > 255 ? 255 : fw->size-position); - position += (fw->size-position > 255 ? 255 : fw->size-position); - } - buf[0] = crc >> 8; - buf[1] = crc & 0xFF; - - dprintk("firmware crc is 0x%02X 0x%02X\n", buf[0], buf[1]); - - /* write crc */ - nxt200x_writebytes(state, 0x2C, buf,2); - - /* do a read to stop things */ - nxt200x_readbytes(state, 0x2C, buf, 1); - - /* set transfer mode to complete */ - buf[0] = 0x80; - nxt200x_writebytes(state, 0x2B, buf,1); - - return 0; -}; - -static int nxt200x_setup_frontend_parameters(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - struct nxt200x_state* state = fe->demodulator_priv; - u8 buf[5]; - - /* stop the micro first */ - nxt200x_microcontroller_stop(state); - - if (state->demod_chip == NXT2004) { - /* make sure demod is set to digital */ - buf[0] = 0x04; - nxt200x_writebytes(state, 0x14, buf, 1); - buf[0] = 0x00; - nxt200x_writebytes(state, 0x17, buf, 1); - } - - /* set additional params */ - switch (p->modulation) { - case QAM_64: - case QAM_256: - /* Set punctured clock for QAM */ - /* This is just a guess since I am unable to test it */ - if (state->config->set_ts_params) - state->config->set_ts_params(fe, 1); - break; - case VSB_8: - /* Set non-punctured clock for VSB */ - if (state->config->set_ts_params) - state->config->set_ts_params(fe, 0); - break; - default: - return -EINVAL; - break; - } - - if (fe->ops.tuner_ops.calc_regs) { - /* get tuning information */ - fe->ops.tuner_ops.calc_regs(fe, buf, 5); - - /* write frequency information */ - nxt200x_writetuner(state, buf); - } - - /* reset the agc now that tuning has been completed */ - nxt200x_agc_reset(state); - - /* set target power level */ - switch (p->modulation) { - case QAM_64: - case QAM_256: - buf[0] = 0x74; - break; - case VSB_8: - buf[0] = 0x70; - break; - default: - return -EINVAL; - break; - } - nxt200x_writebytes(state, 0x42, buf, 1); - - /* configure sdm */ - switch (state->demod_chip) { - case NXT2002: - buf[0] = 0x87; - break; - case NXT2004: - buf[0] = 0x07; - break; - default: - return -EINVAL; - break; - } - nxt200x_writebytes(state, 0x57, buf, 1); - - /* write sdm1 input */ - buf[0] = 0x10; - buf[1] = 0x00; - switch (state->demod_chip) { - case NXT2002: - nxt200x_writereg_multibyte(state, 0x58, buf, 2); - break; - case NXT2004: - nxt200x_writebytes(state, 0x58, buf, 2); - break; - default: - return -EINVAL; - break; - } - - /* write sdmx input */ - switch (p->modulation) { - case QAM_64: - buf[0] = 0x68; - break; - case QAM_256: - buf[0] = 0x64; - break; - case VSB_8: - buf[0] = 0x60; - break; - default: - return -EINVAL; - break; - } - buf[1] = 0x00; - switch (state->demod_chip) { - case NXT2002: - nxt200x_writereg_multibyte(state, 0x5C, buf, 2); - break; - case NXT2004: - nxt200x_writebytes(state, 0x5C, buf, 2); - break; - default: - return -EINVAL; - break; - } - - /* write adc power lpf fc */ - buf[0] = 0x05; - nxt200x_writebytes(state, 0x43, buf, 1); - - if (state->demod_chip == NXT2004) { - /* write ??? */ - buf[0] = 0x00; - buf[1] = 0x00; - nxt200x_writebytes(state, 0x46, buf, 2); - } - - /* write accumulator2 input */ - buf[0] = 0x80; - buf[1] = 0x00; - switch (state->demod_chip) { - case NXT2002: - nxt200x_writereg_multibyte(state, 0x4B, buf, 2); - break; - case NXT2004: - nxt200x_writebytes(state, 0x4B, buf, 2); - break; - default: - return -EINVAL; - break; - } - - /* write kg1 */ - buf[0] = 0x00; - nxt200x_writebytes(state, 0x4D, buf, 1); - - /* write sdm12 lpf fc */ - buf[0] = 0x44; - nxt200x_writebytes(state, 0x55, buf, 1); - - /* write agc control reg */ - buf[0] = 0x04; - nxt200x_writebytes(state, 0x41, buf, 1); - - if (state->demod_chip == NXT2004) { - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x24; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - /* soft reset? */ - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x10; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x04; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x81, buf, 1); - buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00; - nxt200x_writereg_multibyte(state, 0x82, buf, 3); - nxt200x_readreg_multibyte(state, 0x88, buf, 1); - buf[0] = 0x11; - nxt200x_writereg_multibyte(state, 0x88, buf, 1); - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x44; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - } - - /* write agc ucgp0 */ - switch (p->modulation) { - case QAM_64: - buf[0] = 0x02; - break; - case QAM_256: - buf[0] = 0x03; - break; - case VSB_8: - buf[0] = 0x00; - break; - default: - return -EINVAL; - break; - } - nxt200x_writebytes(state, 0x30, buf, 1); - - /* write agc control reg */ - buf[0] = 0x00; - nxt200x_writebytes(state, 0x41, buf, 1); - - /* write accumulator2 input */ - buf[0] = 0x80; - buf[1] = 0x00; - switch (state->demod_chip) { - case NXT2002: - nxt200x_writereg_multibyte(state, 0x49, buf, 2); - nxt200x_writereg_multibyte(state, 0x4B, buf, 2); - break; - case NXT2004: - nxt200x_writebytes(state, 0x49, buf, 2); - nxt200x_writebytes(state, 0x4B, buf, 2); - break; - default: - return -EINVAL; - break; - } - - /* write agc control reg */ - buf[0] = 0x04; - nxt200x_writebytes(state, 0x41, buf, 1); - - nxt200x_microcontroller_start(state); - - if (state->demod_chip == NXT2004) { - nxt2004_microcontroller_init(state); - - /* ???? */ - buf[0] = 0xF0; - buf[1] = 0x00; - nxt200x_writebytes(state, 0x5C, buf, 2); - } - - /* adjacent channel detection should be done here, but I don't - have any stations with this need so I cannot test it */ - - return 0; -} - -static int nxt200x_read_status(struct dvb_frontend* fe, fe_status_t* status) -{ - struct nxt200x_state* state = fe->demodulator_priv; - u8 lock; - nxt200x_readbytes(state, 0x31, &lock, 1); - - *status = 0; - if (lock & 0x20) { - *status |= FE_HAS_SIGNAL; - *status |= FE_HAS_CARRIER; - *status |= FE_HAS_VITERBI; - *status |= FE_HAS_SYNC; - *status |= FE_HAS_LOCK; - } - return 0; -} - -static int nxt200x_read_ber(struct dvb_frontend* fe, u32* ber) -{ - struct nxt200x_state* state = fe->demodulator_priv; - u8 b[3]; - - nxt200x_readreg_multibyte(state, 0xE6, b, 3); - - *ber = ((b[0] << 8) + b[1]) * 8; - - return 0; -} - -static int nxt200x_read_signal_strength(struct dvb_frontend* fe, u16* strength) -{ - struct nxt200x_state* state = fe->demodulator_priv; - u8 b[2]; - u16 temp = 0; - - /* setup to read cluster variance */ - b[0] = 0x00; - nxt200x_writebytes(state, 0xA1, b, 1); - - /* get multreg val */ - nxt200x_readreg_multibyte(state, 0xA6, b, 2); - - temp = (b[0] << 8) | b[1]; - *strength = ((0x7FFF - temp) & 0x0FFF) * 16; - - return 0; -} - -static int nxt200x_read_snr(struct dvb_frontend* fe, u16* snr) -{ - - struct nxt200x_state* state = fe->demodulator_priv; - u8 b[2]; - u16 temp = 0, temp2; - u32 snrdb = 0; - - /* setup to read cluster variance */ - b[0] = 0x00; - nxt200x_writebytes(state, 0xA1, b, 1); - - /* get multreg val from 0xA6 */ - nxt200x_readreg_multibyte(state, 0xA6, b, 2); - - temp = (b[0] << 8) | b[1]; - temp2 = 0x7FFF - temp; - - /* snr will be in db */ - if (temp2 > 0x7F00) - snrdb = 1000*24 + ( 1000*(30-24) * ( temp2 - 0x7F00 ) / ( 0x7FFF - 0x7F00 ) ); - else if (temp2 > 0x7EC0) - snrdb = 1000*18 + ( 1000*(24-18) * ( temp2 - 0x7EC0 ) / ( 0x7F00 - 0x7EC0 ) ); - else if (temp2 > 0x7C00) - snrdb = 1000*12 + ( 1000*(18-12) * ( temp2 - 0x7C00 ) / ( 0x7EC0 - 0x7C00 ) ); - else - snrdb = 1000*0 + ( 1000*(12-0) * ( temp2 - 0 ) / ( 0x7C00 - 0 ) ); - - /* the value reported back from the frontend will be FFFF=32db 0000=0db */ - *snr = snrdb * (0xFFFF/32000); - - return 0; -} - -static int nxt200x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) -{ - struct nxt200x_state* state = fe->demodulator_priv; - u8 b[3]; - - nxt200x_readreg_multibyte(state, 0xE6, b, 3); - *ucblocks = b[2]; - - return 0; -} - -static int nxt200x_sleep(struct dvb_frontend* fe) -{ - return 0; -} - -static int nxt2002_init(struct dvb_frontend* fe) -{ - struct nxt200x_state* state = fe->demodulator_priv; - const struct firmware *fw; - int ret; - u8 buf[2]; - - /* request the firmware, this will block until someone uploads it */ - pr_debug("%s: Waiting for firmware upload (%s)...\n", - __func__, NXT2002_DEFAULT_FIRMWARE); - ret = request_firmware(&fw, NXT2002_DEFAULT_FIRMWARE, - state->i2c->dev.parent); - pr_debug("%s: Waiting for firmware upload(2)...\n", __func__); - if (ret) { - pr_err("%s: No firmware uploaded (timeout or file not found?)" - "\n", __func__); - return ret; - } - - ret = nxt2002_load_firmware(fe, fw); - release_firmware(fw); - if (ret) { - pr_err("%s: Writing firmware to device failed\n", __func__); - return ret; - } - pr_info("%s: Firmware upload complete\n", __func__); - - /* Put the micro into reset */ - nxt200x_microcontroller_stop(state); - - /* ensure transfer is complete */ - buf[0]=0x00; - nxt200x_writebytes(state, 0x2B, buf, 1); - - /* Put the micro into reset for real this time */ - nxt200x_microcontroller_stop(state); - - /* soft reset everything (agc,frontend,eq,fec)*/ - buf[0] = 0x0F; - nxt200x_writebytes(state, 0x08, buf, 1); - buf[0] = 0x00; - nxt200x_writebytes(state, 0x08, buf, 1); - - /* write agc sdm configure */ - buf[0] = 0xF1; - nxt200x_writebytes(state, 0x57, buf, 1); - - /* write mod output format */ - buf[0] = 0x20; - nxt200x_writebytes(state, 0x09, buf, 1); - - /* write fec mpeg mode */ - buf[0] = 0x7E; - buf[1] = 0x00; - nxt200x_writebytes(state, 0xE9, buf, 2); - - /* write mux selection */ - buf[0] = 0x00; - nxt200x_writebytes(state, 0xCC, buf, 1); - - return 0; -} - -static int nxt2004_init(struct dvb_frontend* fe) -{ - struct nxt200x_state* state = fe->demodulator_priv; - const struct firmware *fw; - int ret; - u8 buf[3]; - - /* ??? */ - buf[0]=0x00; - nxt200x_writebytes(state, 0x1E, buf, 1); - - /* request the firmware, this will block until someone uploads it */ - pr_debug("%s: Waiting for firmware upload (%s)...\n", - __func__, NXT2004_DEFAULT_FIRMWARE); - ret = request_firmware(&fw, NXT2004_DEFAULT_FIRMWARE, - state->i2c->dev.parent); - pr_debug("%s: Waiting for firmware upload(2)...\n", __func__); - if (ret) { - pr_err("%s: No firmware uploaded (timeout or file not found?)" - "\n", __func__); - return ret; - } - - ret = nxt2004_load_firmware(fe, fw); - release_firmware(fw); - if (ret) { - pr_err("%s: Writing firmware to device failed\n", __func__); - return ret; - } - pr_info("%s: Firmware upload complete\n", __func__); - - /* ensure transfer is complete */ - buf[0] = 0x01; - nxt200x_writebytes(state, 0x19, buf, 1); - - nxt2004_microcontroller_init(state); - nxt200x_microcontroller_stop(state); - nxt200x_microcontroller_stop(state); - nxt2004_microcontroller_init(state); - nxt200x_microcontroller_stop(state); - - /* soft reset everything (agc,frontend,eq,fec)*/ - buf[0] = 0xFF; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - - /* write agc sdm configure */ - buf[0] = 0xD7; - nxt200x_writebytes(state, 0x57, buf, 1); - - /* ???*/ - buf[0] = 0x07; - buf[1] = 0xfe; - nxt200x_writebytes(state, 0x35, buf, 2); - buf[0] = 0x12; - nxt200x_writebytes(state, 0x34, buf, 1); - buf[0] = 0x80; - nxt200x_writebytes(state, 0x21, buf, 1); - - /* ???*/ - buf[0] = 0x21; - nxt200x_writebytes(state, 0x0A, buf, 1); - - /* ???*/ - buf[0] = 0x01; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - /* write fec mpeg mode */ - buf[0] = 0x7E; - buf[1] = 0x00; - nxt200x_writebytes(state, 0xE9, buf, 2); - - /* write mux selection */ - buf[0] = 0x00; - nxt200x_writebytes(state, 0xCC, buf, 1); - - /* ???*/ - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - /* soft reset? */ - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x10; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - - /* ???*/ - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x01; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x70; - nxt200x_writereg_multibyte(state, 0x81, buf, 1); - buf[0] = 0x31; buf[1] = 0x5E; buf[2] = 0x66; - nxt200x_writereg_multibyte(state, 0x82, buf, 3); - - nxt200x_readreg_multibyte(state, 0x88, buf, 1); - buf[0] = 0x11; - nxt200x_writereg_multibyte(state, 0x88, buf, 1); - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x40; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - nxt200x_readbytes(state, 0x10, buf, 1); - buf[0] = 0x10; - nxt200x_writebytes(state, 0x10, buf, 1); - nxt200x_readbytes(state, 0x0A, buf, 1); - buf[0] = 0x21; - nxt200x_writebytes(state, 0x0A, buf, 1); - - nxt2004_microcontroller_init(state); - - buf[0] = 0x21; - nxt200x_writebytes(state, 0x0A, buf, 1); - buf[0] = 0x7E; - nxt200x_writebytes(state, 0xE9, buf, 1); - buf[0] = 0x00; - nxt200x_writebytes(state, 0xEA, buf, 1); - - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - /* soft reset? */ - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x10; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - nxt200x_readreg_multibyte(state, 0x08, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x08, buf, 1); - - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x04; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x00; - nxt200x_writereg_multibyte(state, 0x81, buf, 1); - buf[0] = 0x80; buf[1] = 0x00; buf[2] = 0x00; - nxt200x_writereg_multibyte(state, 0x82, buf, 3); - - nxt200x_readreg_multibyte(state, 0x88, buf, 1); - buf[0] = 0x11; - nxt200x_writereg_multibyte(state, 0x88, buf, 1); - - nxt200x_readreg_multibyte(state, 0x80, buf, 1); - buf[0] = 0x44; - nxt200x_writereg_multibyte(state, 0x80, buf, 1); - - /* initialize tuner */ - nxt200x_readbytes(state, 0x10, buf, 1); - buf[0] = 0x12; - nxt200x_writebytes(state, 0x10, buf, 1); - buf[0] = 0x04; - nxt200x_writebytes(state, 0x13, buf, 1); - buf[0] = 0x00; - nxt200x_writebytes(state, 0x16, buf, 1); - buf[0] = 0x04; - nxt200x_writebytes(state, 0x14, buf, 1); - buf[0] = 0x00; - nxt200x_writebytes(state, 0x14, buf, 1); - nxt200x_writebytes(state, 0x17, buf, 1); - nxt200x_writebytes(state, 0x14, buf, 1); - nxt200x_writebytes(state, 0x17, buf, 1); - - return 0; -} - -static int nxt200x_init(struct dvb_frontend* fe) -{ - struct nxt200x_state* state = fe->demodulator_priv; - int ret = 0; - - if (!state->initialised) { - switch (state->demod_chip) { - case NXT2002: - ret = nxt2002_init(fe); - break; - case NXT2004: - ret = nxt2004_init(fe); - break; - default: - return -EINVAL; - break; - } - state->initialised = 1; - } - return ret; -} - -static int nxt200x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) -{ - fesettings->min_delay_ms = 500; - fesettings->step_size = 0; - fesettings->max_drift = 0; - return 0; -} - -static void nxt200x_release(struct dvb_frontend* fe) -{ - struct nxt200x_state* state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops nxt200x_ops; - -struct dvb_frontend* nxt200x_attach(const struct nxt200x_config* config, - struct i2c_adapter* i2c) -{ - struct nxt200x_state* state = NULL; - u8 buf [] = {0,0,0,0,0}; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct nxt200x_state), GFP_KERNEL); - if (state == NULL) - goto error; - - /* setup the state */ - state->config = config; - state->i2c = i2c; - state->initialised = 0; - - /* read card id */ - nxt200x_readbytes(state, 0x00, buf, 5); - dprintk("NXT info: %*ph\n", 5, buf); - - /* set demod chip */ - switch (buf[0]) { - case 0x04: - state->demod_chip = NXT2002; - pr_info("NXT2002 Detected\n"); - break; - case 0x05: - state->demod_chip = NXT2004; - pr_info("NXT2004 Detected\n"); - break; - default: - goto error; - } - - /* make sure demod chip is supported */ - switch (state->demod_chip) { - case NXT2002: - if (buf[0] != 0x04) goto error; /* device id */ - if (buf[1] != 0x02) goto error; /* fab id */ - if (buf[2] != 0x11) goto error; /* month */ - if (buf[3] != 0x20) goto error; /* year msb */ - if (buf[4] != 0x00) goto error; /* year lsb */ - break; - case NXT2004: - if (buf[0] != 0x05) goto error; /* device id */ - break; - default: - goto error; - } - - /* create dvb_frontend */ - memcpy(&state->frontend.ops, &nxt200x_ops, sizeof(struct dvb_frontend_ops)); - state->frontend.demodulator_priv = state; - return &state->frontend; - -error: - kfree(state); - pr_err("Unknown/Unsupported NXT chip: %*ph\n", 5, buf); - return NULL; -} - -static struct dvb_frontend_ops nxt200x_ops = { - .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, - .info = { - .name = "Nextwave NXT200X VSB/QAM frontend", - .frequency_min = 54000000, - .frequency_max = 860000000, - .frequency_stepsize = 166666, /* stepsize is just a guess */ - .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | - FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | - FE_CAN_8VSB | FE_CAN_QAM_64 | FE_CAN_QAM_256 - }, - - .release = nxt200x_release, - - .init = nxt200x_init, - .sleep = nxt200x_sleep, - - .set_frontend = nxt200x_setup_frontend_parameters, - .get_tune_settings = nxt200x_get_tune_settings, - - .read_status = nxt200x_read_status, - .read_ber = nxt200x_read_ber, - .read_signal_strength = nxt200x_read_signal_strength, - .read_snr = nxt200x_read_snr, - .read_ucblocks = nxt200x_read_ucblocks, -}; - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -MODULE_DESCRIPTION("NXT200X (ATSC 8VSB & ITU-T J.83 AnnexB 64/256 QAM) Demodulator Driver"); -MODULE_AUTHOR("Kirk Lapray, Michael Krufky, Jean-Francois Thibert, and Taylor Jacob"); -MODULE_LICENSE("GPL"); - -EXPORT_SYMBOL(nxt200x_attach); - |
