--- /dev/null
+/*
+ Conexant 22702 DVB OFDM frontend driver
+
+ based on:
+ Alps TDMB7 DVB OFDM frontend driver
+
+ Copyright (C) 2001-2002 Convergence Integrated Media GmbH
+ Holger Waechtler <holger@convergence.de>
+
+ Copyright (C) 2004 Steven Toth <steve@toth.demon.co.uk>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include "dvb_frontend.h"
+
+#define FRONTEND_NAME "dvbfe_cx22702"
+
+#define I2C_EEPROM_SLAVE_ADDR 0x50
+
+#define PLLTYPE_DTT7592 1
+#define PLLTYPE_DTT7595 2
+#define PLLTYPE_DTT7579 3
+
+static int debug = 0;
+
+#define dprintk if (debug) printk
+
+static struct dvb_frontend_info cx22702_info = {
+ .name = "CX22702 Demod Thomson 759x/7579 PLL",
+ .type = FE_OFDM,
+ .frequency_min = 177000000,
+ .frequency_max = 858000000,
+ .frequency_stepsize = 166666,
+ .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_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
+};
+
+struct cx22702_state {
+ struct i2c_adapter *i2c;
+ struct dvb_adapter *dvb;
+ struct dvb_frontend_info cx22702_info;
+ char pll_type;
+ int pll_addr;
+ int demod_addr;
+ u8 prevUCBlocks;
+};
+
+/* Register values to initialise the demod */
+static u8 init_tab [] = {
+ 0x00, 0x00, /* Stop aquisition */
+ 0x0B, 0x06,
+ 0x09, 0x01,
+ 0x0D, 0x41,
+ 0x16, 0x32,
+ 0x20, 0x0A,
+ 0x21, 0x17,
+ 0x24, 0x3e,
+ 0x26, 0xff,
+ 0x27, 0x10,
+ 0x28, 0x00,
+ 0x29, 0x00,
+ 0x2a, 0x10,
+ 0x2b, 0x00,
+ 0x2c, 0x10,
+ 0x2d, 0x00,
+ 0x48, 0xd4,
+ 0x49, 0x56,
+ 0x6b, 0x1e,
+ 0xc8, 0x02,
+ 0xf8, 0x02,
+ 0xf9, 0x00,
+ 0xfa, 0x00,
+ 0xfb, 0x00,
+ 0xfc, 0x00,
+ 0xfd, 0x00,
+};
+
+static struct i2c_client client_template;
+
+static int cx22702_writereg (struct i2c_adapter *i2c, int demod_addr, u8 reg, u8 data)
+{
+ int ret;
+ u8 buf [] = { reg, data };
+ struct i2c_msg msg = { .addr = demod_addr, .flags = 0, .buf = buf, .len = 2 };
+
+ ret = i2c_transfer(i2c, &msg, 1);
+
+ if (ret != 1)
+ printk("%s: writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n",
+ __FUNCTION__, reg, data, ret);
+
+ return (ret != 1) ? -1 : 0;
+}
+
+static u8 cx22702_readreg (struct i2c_adapter *i2c, int demod_addr, u8 reg)
+{
+ int ret;
+ u8 b0 [] = { reg };
+ u8 b1 [] = { 0 };
+
+ struct i2c_msg msg [] = {
+ { .addr = demod_addr, .flags = 0, .buf = b0, .len = 1 },
+ { .addr = demod_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
+
+ ret = i2c_transfer(i2c, msg, 2);
+
+ if (ret != 2)
+ printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
+
+ return b1[0];
+}
+
+static int pll_readreg(struct i2c_adapter *i2c, int pll_addr, int demod_addr, u8 reg)
+{
+ u8 b0 [] = { reg };
+ u8 b1 [] = { 0 };
+
+ struct i2c_msg msg [] = {
+ { .addr = pll_addr, .flags = 0, .buf = b0, .len = 1 },
+ { .addr = pll_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
+ };
+
+ cx22702_writereg (i2c, demod_addr, 0x0D, cx22702_readreg(i2c,demod_addr,0x0D) &0xfe); // Enable PLL bus
+ if (i2c_transfer(i2c, msg, 2) != 2) {
+ printk ("%s i2c pll request failed\n", __FUNCTION__);
+ cx22702_writereg (i2c, demod_addr, 0x0D, cx22702_readreg(i2c,demod_addr,0x0D) | 1); // Disable PLL bus
+ return -ENODEV;
+ }
+ cx22702_writereg (i2c, demod_addr, 0x0D, cx22702_readreg(i2c,demod_addr,0x0D) | 1); // Disable PLL bus
+
+ return b1[0];
+}
+
+static int pll_write (struct i2c_adapter *i2c, int pll_addr, int demod_addr, u8 data [4])
+{
+ int ret=0;
+ struct i2c_msg msg = { .addr = pll_addr, .flags = 0, .buf = data, .len = 4 };
+
+ cx22702_writereg (i2c, demod_addr, 0x0D, cx22702_readreg(i2c,demod_addr,0x0D) &0xfe); // Enable PLL bus
+ ret = i2c_transfer(i2c, &msg, 1);
+ cx22702_writereg (i2c, demod_addr, 0x0D, cx22702_readreg(i2c,demod_addr,0x0D) | 1); // Disable PLL bus
+
+ if (ret != 1)
+ printk("%s: i/o error (addr == 0x%02x, ret == %i)\n", __FUNCTION__, msg.addr, ret);
+
+ return (ret != 1) ? -1 : 0;
+}
+
+static int pll_dtt759x_set_tv_freq (struct i2c_adapter *i2c, struct cx22702_state *state, u32 freq, int bandwidth)
+{
+ int ret;
+
+ u32 div = (freq + 36166667) / 166666;
+
+ /* dividerhigh, dividerlow, control, bandwidth switch tuner args */
+ unsigned char buf [4] = {
+ (div >> 8) & 0x7f,
+ div & 0xff,
+ 0x84,
+ 0x00
+ };
+
+ if(freq < 470000000) {
+ buf[3] = 0x02;
+ } else {
+ buf[3] = 0x08;
+ }
+
+ if(bandwidth == BANDWIDTH_7_MHZ) {
+ buf[3] |= 0x10;
+ }
+
+ // Now compensate for the charge pump osc
+ if(freq <= 264000000) {
+ buf[2] = buf[2] | 0x30;
+ } else if (freq <= 735000000) {
+ buf[2] = buf[2] | 0x38;
+ } else if (freq <= 835000000) {
+ buf[2] = buf[2] | 0x70;
+ } else if (freq <= 896000000) {
+ buf[2] = buf[2] | 0x78;
+ }
+
+ dprintk ("%s: freq == %i, div == 0x%04x\n", __FUNCTION__, (int) freq, (int) div);
+
+ ret= pll_write (i2c, state->pll_addr, state->demod_addr, buf);
+ if(ret<0) {
+ dprintk ("%s: first pll_write failed\n",__FUNCTION__);
+ return ret;
+ }
+
+ /* Set the AGC during search */
+ buf[2]=(buf[2] & 0xc7) | 0x18;
+ buf[3]=0xa0;
+ ret=pll_write (i2c, state->pll_addr, state->demod_addr, buf);
+ if(ret<0) {
+ dprintk ("%s: second pll_write failed\n",__FUNCTION__);
+ return ret;
+ }
+
+ /* Tuner needs a small amount of time */
+ msleep(100);
+
+ /* Set the AGC post-search */
+ buf[3]=0x20;
+ ret=pll_write (i2c, state->pll_addr, state->demod_addr, buf);
+ if(ret<0) {
+ dprintk ("%s: third pll_write failed\n",__FUNCTION__);
+ return ret;
+ }
+
+ return ret;
+
+}
+
+static int pll_dtt7579_set_tv_freq (struct i2c_adapter *i2c, struct cx22702_state *state, u32 freq, int bandwidth)
+{
+ int ret;
+
+ u32 div = (freq + 36166667) / 166666;
+
+ /* dividerhigh, dividerlow */
+ unsigned char buf [4] = {
+ div >> 8,
+ div & 0xff,
+ 0x00,
+ 0x00
+ };
+
+ // FIXME: bandwidth setting unknown
+
+ // Now compensate for the charge pump osc
+ if(freq <= 506000000) {
+ buf[2] = 0xb4;
+ buf[3] = 0x02;
+ } else if (freq <= 735000000) {
+ buf[2] = 0xbc;
+ buf[3] = 0x08;
+ } else if (freq <= 835000000) {
+ buf[2] = 0xf4;
+ buf[3] = 0x08;
+ } else if (freq <= 896000000) {
+ buf[2] = 0xfc;
+ buf[3] = 0x08;
+ }
+
+ dprintk ("%s: freq == %i, div == 0x%04x\n", __FUNCTION__, (int) freq, (int) div);
+
+ ret= pll_write (i2c, state->pll_addr, state->demod_addr, buf);
+ if(ret<0) {
+ dprintk ("%s: first pll_write failed\n",__FUNCTION__);
+ return ret;
+ }
+
+ /* Set the AGC to search */
+ buf[2]=(buf[2] & 0xdc) | 0x9c;
+ buf[3]=0xa0;
+ ret=pll_write (i2c, state->pll_addr, state->demod_addr, buf);
+ if(ret<0) {
+ dprintk ("%s: second pll_write failed\n",__FUNCTION__);
+ return ret;
+ }
+
+ return ret;
+
+}
+
+/* Reset the demod hardware and reset all of the configuration registers
+ to a default state. */
+static int cx22702_init (struct i2c_adapter *i2c, struct cx22702_state *state)
+{
+ int i;
+
+ cx22702_writereg (i2c, state->demod_addr, 0x00, 0x02);
+
+ msleep(10);
+
+ for (i=0; i<sizeof(init_tab); i+=2)
+ cx22702_writereg (i2c, state->demod_addr, init_tab[i], init_tab[i+1]);
+
+ return 0;
+}
+
+static int cx22702_set_inversion (struct i2c_adapter *i2c, struct cx22702_state *state, int inversion)
+{
+ u8 val;
+
+ switch (inversion) {
+
+ case INVERSION_AUTO:
+ return -EOPNOTSUPP;
+
+ case INVERSION_ON:
+ val = cx22702_readreg (i2c, state->demod_addr, 0x0C);
+ return cx22702_writereg (i2c, state->demod_addr, 0x0C, val | 0x01);
+
+ case INVERSION_OFF:
+ val = cx22702_readreg (i2c, state->demod_addr, 0x0C);
+ return cx22702_writereg (i2c, state->demod_addr, 0x0C, val & 0xfe);
+
+ default:
+ return -EINVAL;
+
+ }
+
+}
+
+/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
+static int cx22702_set_tps (struct i2c_adapter *i2c, struct cx22702_state *state,
+ struct dvb_frontend_parameters *p)
+{
+ u8 val;
+
+ /* set PLL */
+ switch(state->pll_type) {
+ case PLLTYPE_DTT7592:
+ case PLLTYPE_DTT7595:
+ pll_dtt759x_set_tv_freq (i2c, state, p->frequency, p->u.ofdm.bandwidth);
+ break;
+
+ case PLLTYPE_DTT7579:
+ pll_dtt7579_set_tv_freq (i2c, state, p->frequency, p->u.ofdm.bandwidth);
+ break;
+ }
+
+ /* set inversion */
+ cx22702_set_inversion (i2c, state, p->inversion);
+
+ /* set bandwidth */
+ switch(p->u.ofdm.bandwidth) {
+ case BANDWIDTH_6_MHZ:
+ cx22702_writereg(i2c, state->demod_addr, 0x0C, (cx22702_readreg(i2c, state->demod_addr, 0x0C) & 0xcf) | 0x20 );
+ break;
+ case BANDWIDTH_7_MHZ:
+ cx22702_writereg(i2c, state->demod_addr, 0x0C, (cx22702_readreg(i2c, state->demod_addr, 0x0C) & 0xcf) | 0x10 );
+ break;
+ case BANDWIDTH_8_MHZ:
+ cx22702_writereg(i2c, state->demod_addr, 0x0C, cx22702_readreg(i2c, state->demod_addr, 0x0C) &0xcf );
+ break;
+ default:
+ dprintk ("%s: invalid bandwidth\n",__FUNCTION__);
+ return -EINVAL;
+ }
+
+
+ p->u.ofdm.code_rate_LP = FEC_AUTO; //temp hack as manual not working
+
+ /* use auto configuration? */
+ if((p->u.ofdm.hierarchy_information==HIERARCHY_AUTO) ||
+ (p->u.ofdm.constellation==QAM_AUTO) ||
+ (p->u.ofdm.code_rate_HP==FEC_AUTO) ||
+ (p->u.ofdm.code_rate_LP==FEC_AUTO) ||
+ (p->u.ofdm.guard_interval==GUARD_INTERVAL_AUTO) ||
+ (p->u.ofdm.transmission_mode==TRANSMISSION_MODE_AUTO) ) {
+
+ /* TPS Source - use hardware driven values */
+ cx22702_writereg(i2c, state->demod_addr, 0x06, 0x10);
+ cx22702_writereg(i2c, state->demod_addr, 0x07, 0x9);
+ cx22702_writereg(i2c, state->demod_addr, 0x08, 0xC1);
+ cx22702_writereg(i2c, state->demod_addr, 0x0B, cx22702_readreg(i2c, state->demod_addr, 0x0B) & 0xfc );
+ cx22702_writereg(i2c, state->demod_addr, 0x0C, (cx22702_readreg(i2c, state->demod_addr, 0x0C) & 0xBF) | 0x40 );
+ cx22702_writereg(i2c, state->demod_addr, 0x00, 0x01); /* Begin aquisition */
+ printk("%s: Autodetecting\n",__FUNCTION__);
+ return 0;
+ }
+
+ /* manually programmed values */
+ val=0;
+ switch(p->u.ofdm.constellation) {
+ case QPSK: val = (val&0xe7); break;
+ case QAM_16: val = (val&0xe7)|0x08; break;
+ case QAM_64: val = (val&0xe7)|0x10; break;
+ default:
+ dprintk ("%s: invalid constellation\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ switch(p->u.ofdm.hierarchy_information) {
+ case HIERARCHY_NONE: val = (val&0xf8); break;
+ case HIERARCHY_1: val = (val&0xf8)|1; break;
+ case HIERARCHY_2: val = (val&0xf8)|2; break;
+ case HIERARCHY_4: val = (val&0xf8)|3; break;
+ default:
+ dprintk ("%s: invalid hierarchy\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ cx22702_writereg (i2c, state->demod_addr, 0x06, val);
+
+ val=0;
+ switch(p->u.ofdm.code_rate_HP) {
+ case FEC_NONE:
+ case FEC_1_2: val = (val&0xc7); break;
+ case FEC_2_3: val = (val&0xc7)|0x08; break;
+ case FEC_3_4: val = (val&0xc7)|0x10; break;
+ case FEC_5_6: val = (val&0xc7)|0x18; break;
+ case FEC_7_8: val = (val&0xc7)|0x20; break;
+ default:
+ dprintk ("%s: invalid code_rate_HP\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ switch(p->u.ofdm.code_rate_LP) {
+ case FEC_NONE:
+ case FEC_1_2: val = (val&0xf8); break;
+ case FEC_2_3: val = (val&0xf8)|1; break;
+ case FEC_3_4: val = (val&0xf8)|2; break;
+ case FEC_5_6: val = (val&0xf8)|3; break;
+ case FEC_7_8: val = (val&0xf8)|4; break;
+ default:
+ dprintk ("%s: invalid code_rate_LP\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ cx22702_writereg (i2c, state->demod_addr, 0x07, val);
+
+ val=0;
+ switch(p->u.ofdm.guard_interval) {
+ case GUARD_INTERVAL_1_32: val = (val&0xf3); break;
+ case GUARD_INTERVAL_1_16: val = (val&0xf3)|0x04; break;
+ case GUARD_INTERVAL_1_8: val = (val&0xf3)|0x08; break;
+ case GUARD_INTERVAL_1_4: val = (val&0xf3)|0x0c; break;
+ default:
+ dprintk ("%s: invalid guard_interval\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ switch(p->u.ofdm.transmission_mode) {
+ case TRANSMISSION_MODE_2K: val = (val&0xfc); break;
+ case TRANSMISSION_MODE_8K: val = (val&0xfc)|1; break;
+ default:
+ dprintk ("%s: invalid transmission_mode\n",__FUNCTION__);
+ return -EINVAL;
+ }
+ cx22702_writereg (i2c, state->demod_addr, 0x08, val);
+ cx22702_writereg(i2c, state->demod_addr, 0x0B, (cx22702_readreg(i2c, state->demod_addr, 0x0B) & 0xfc) | 0x02 );
+ cx22702_writereg(i2c, state->demod_addr, 0x0C, (cx22702_readreg(i2c, state->demod_addr, 0x0C) & 0xBF) | 0x40 );
+
+ /* Begin channel aquisition */
+ cx22702_writereg(i2c, state->demod_addr, 0x00, 0x01);
+
+ return 0;
+}
+
+/* Retrieve the demod settings */
+static int cx22702_get_tps (struct i2c_adapter *i2c, struct cx22702_state *state,
+ struct dvb_ofdm_parameters *p)
+{
+ u8 val;
+
+ /* Make sure the TPS regs are valid */
+ if (!(cx22702_readreg(i2c, state->demod_addr, 0x0A) & 0x20))
+ return -EAGAIN;
+
+ val = cx22702_readreg (i2c, state->demod_addr, 0x01);
+ switch( (val&0x18)>>3) {
+ case 0: p->constellation = QPSK; break;
+ case 1: p->constellation = QAM_16; break;
+ case 2: p->constellation = QAM_64; break;
+ }
+ switch( val&0x07 ) {
+ case 0: p->hierarchy_information = HIERARCHY_NONE; break;
+ case 1: p->hierarchy_information = HIERARCHY_1; break;
+ case 2: p->hierarchy_information = HIERARCHY_2; break;
+ case 3: p->hierarchy_information = HIERARCHY_4; break;
+ }
+
+
+ val = cx22702_readreg (i2c, state->demod_addr, 0x02);
+ switch( (val&0x38)>>3 ) {
+ case 0: p->code_rate_HP = FEC_1_2; break;
+ case 1: p->code_rate_HP = FEC_2_3; break;
+ case 2: p->code_rate_HP = FEC_3_4; break;
+ case 3: p->code_rate_HP = FEC_5_6; break;
+ case 4: p->code_rate_HP = FEC_7_8; break;
+ }
+ switch( val&0x07 ) {
+ case 0: p->code_rate_LP = FEC_1_2; break;
+ case 1: p->code_rate_LP = FEC_2_3; break;
+ case 2: p->code_rate_LP = FEC_3_4; break;
+ case 3: p->code_rate_LP = FEC_5_6; break;
+ case 4: p->code_rate_LP = FEC_7_8; break;
+ }
+
+
+ val = cx22702_readreg (i2c, state->demod_addr, 0x03);
+ switch( (val&0x0c)>>2 ) {
+ case 0: p->guard_interval = GUARD_INTERVAL_1_32; break;
+ case 1: p->guard_interval = GUARD_INTERVAL_1_16; break;
+ case 2: p->guard_interval = GUARD_INTERVAL_1_8; break;
+ case 3: p->guard_interval = GUARD_INTERVAL_1_4; break;
+ }
+ switch( val&0x03 ) {
+ case 0: p->transmission_mode = TRANSMISSION_MODE_2K; break;
+ case 1: p->transmission_mode = TRANSMISSION_MODE_8K; break;
+ }
+
+ return 0;
+}
+
+static int cx22702_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg)
+{
+ struct cx22702_state *state = fe->data;
+ struct i2c_adapter *i2c = state->i2c;
+ u8 reg0A;
+ u8 reg23;
+ u8 ucblocks;
+
+ switch (cmd) {
+ case FE_GET_INFO:
+ memcpy (arg, &state->cx22702_info, sizeof(struct dvb_frontend_info));
+ break;
+
+ case FE_READ_STATUS:
+ {
+ fe_status_t *status = (fe_status_t *) arg;
+
+ *status = 0;
+
+ reg0A = cx22702_readreg (i2c, state->demod_addr, 0x0A);
+ reg23 = cx22702_readreg (i2c, state->demod_addr, 0x23);
+
+ dprintk ("%s: status demod=0x%02x agc=0x%02x\n"
+ ,__FUNCTION__,reg0A,reg23);
+
+ if(reg0A & 0x10) {
+ *status |= FE_HAS_LOCK;
+ *status |= FE_HAS_VITERBI;
+ *status |= FE_HAS_SYNC;
+ }
+
+ if(reg0A & 0x20)
+ *status |= FE_HAS_CARRIER;
+
+ if(reg23 < 0xf0)
+ *status |= FE_HAS_SIGNAL;
+
+ break;
+
+ }
+
+ case FE_READ_BER:
+ if(cx22702_readreg (i2c, state->demod_addr, 0xE4) & 0x02) {
+ /* Realtime statistics */
+ *((u32*) arg) = (cx22702_readreg (i2c, state->demod_addr, 0xDE) & 0x7F) << 7
+ | (cx22702_readreg (i2c, state->demod_addr, 0xDF)&0x7F);
+ } else {
+ /* Averagtine statistics */
+ *((u32*) arg) = (cx22702_readreg (i2c, state->demod_addr, 0xDE) & 0x7F) << 7
+ | cx22702_readreg (i2c, state->demod_addr, 0xDF);
+ }
+ break;
+
+ case FE_READ_SIGNAL_STRENGTH:
+ {
+ u16 ss = cx22702_readreg (i2c, state->demod_addr, 0x23);
+ *((u16*) arg) = ss;
+ break;
+ }
+
+ /* We don't have an register for this */
+ /* We'll take the inverse of the BER register */
+ case FE_READ_SNR:
+ {
+ u16 rs_ber=0;
+ if(cx22702_readreg (i2c, state->demod_addr, 0xE4) & 0x02) {
+ /* Realtime statistics */
+ rs_ber = (cx22702_readreg (i2c, state->demod_addr, 0xDE) & 0x7F) << 7
+ | (cx22702_readreg (i2c, state->demod_addr, 0xDF)& 0x7F);
+ } else {
+ /* Averagine statistics */
+ rs_ber = (cx22702_readreg (i2c, state->demod_addr, 0xDE) & 0x7F) << 8
+ | cx22702_readreg (i2c, state->demod_addr, 0xDF);
+ }
+ *((u16*) arg) = ~rs_ber;
+ break;
+ }
+
+ case FE_READ_UNCORRECTED_BLOCKS:
+ /* RS Uncorrectable Packet Count then reset */
+ ucblocks = cx22702_readreg (i2c, state->demod_addr, 0xE3);
+ if (state->prevUCBlocks < ucblocks) *((u32*) arg) = (ucblocks - state->prevUCBlocks);
+ else *((u32*) arg) = state->prevUCBlocks - ucblocks;
+ state->prevUCBlocks = ucblocks;
+ break;
+
+ case FE_SET_FRONTEND:
+ {
+ struct dvb_frontend_parameters *p = arg;
+ int ret;
+
+ if((ret=cx22702_set_tps (i2c, state, p))<0) {
+ dprintk ("%s: set_tps failed ret=%d\n",__FUNCTION__,ret);
+ return ret;
+ }
+ break;
+ }
+
+ case FE_GET_FRONTEND:
+ {
+ struct dvb_frontend_parameters *p = arg;
+ u8 reg0C = cx22702_readreg (i2c, state->demod_addr, 0x0C);
+
+ p->inversion = reg0C & 0x1 ? INVERSION_ON : INVERSION_OFF;
+ return cx22702_get_tps (i2c, state, &p->u.ofdm);
+ }
+
+ case FE_INIT:
+ return cx22702_init (i2c, state);
+
+ default:
+ return -EOPNOTSUPP;
+ };
+
+ return 0;
+}
+
+/* Validate the eeprom contents, make sure content look ok.
+ Get the eeprom data. */
+static int cx22702_validate_eeprom(struct i2c_adapter *i2c, int* minfreq, int* pll_type, int* pll_addr, int* demod_addr)
+{
+ u8 b0 [] = { 0 };
+ u8 b1 [128];
+ u32 model=0;
+ u8 tuner=0;
+ int i,j;
+
+ struct i2c_msg msg [] = {
+ { .addr = I2C_EEPROM_SLAVE_ADDR, .flags = 0, .buf = b0, .len = 1 },
+ { .addr = I2C_EEPROM_SLAVE_ADDR, .flags = I2C_M_RD, .buf = b1, .len = 128 }
+ };
+
+ if (i2c_transfer(i2c, msg, 2) != 2) {
+ printk ("%s i2c eeprom request failed\n", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ if(debug) {
+ dprintk ("i2c eeprom content:\n");
+ j=0;
+ for(i=0;i<128;i++) {
+ dprintk("%02x ",b1[i]);
+ if(j++==16) {
+ dprintk("\n");
+ j=0;
+ }
+ }
+ dprintk("\n");
+ }
+
+ if( (b1[8]!=0x84) || (b1[10]!=0x00) ) {
+ printk ("%s eeprom content is not valid\n", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ /* Make sure we support the board model */
+ model = b1[0x1f] << 24 | b1[0x1e] << 16 | b1[0x1d] << 8 | b1[0x1c];
+ switch(model) {
+ case 90002:
+ case 90500:
+ case 90501:
+ dprintk ("%s: Model #%d\n",__FUNCTION__,model);
+ break;
+ default:
+ printk ("%s: Unknown model #%d not supported\n",__FUNCTION__,model);
+ return -ENODEV;
+ }
+
+ /* Make sure we support the tuner */
+ tuner = b1[0x2d];
+ switch(tuner) {
+ case 0x4B:
+ dprintk ("%s: Tuner Thomson DTT 7595\n",__FUNCTION__);
+ *minfreq = 177000000;
+ *pll_type = PLLTYPE_DTT7595;
+ break;
+ case 0x4C:
+ dprintk ("%s: Tuner Thomson DTT 7592\n",__FUNCTION__);
+ *minfreq = 474000000;
+ *pll_type = PLLTYPE_DTT7592;
+ break;
+ default:
+ printk ("%s: Unknown tuner 0x%02x not supported\n",__FUNCTION__,tuner);
+ return -ENODEV;
+ }
+ *pll_addr = 0x61;
+ *demod_addr = 0x43;
+ return 0;
+}
+
+
+/* Validate the demod, make sure we understand the hardware */
+static int cx22702_validate_demod(struct i2c_adapter *i2c, int demod_addr)
+{
+ u8 b0 [] = { 0x1f };
+ u8 b1 [] = { 0 };
+
+ struct i2c_msg msg [] = {
+ { .addr = demod_addr, .flags = 0, .buf = b0, .len = 1 },
+ { .addr = demod_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
+ };
+
+ if (i2c_transfer(i2c, msg, 2) != 2) {
+ printk ("%s i2c demod request failed\n", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ if( (b1[0]!=0x3) ) {
+ printk ("%s i2c demod type 0x(%02x) not known\n", __FUNCTION__,b1[0]);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/* Validate the tuner PLL, make sure we understand the hardware */
+static int cx22702_validate_pll(struct i2c_adapter *i2c, int pll_addr, int demod_addr)
+{
+ int result=0;
+
+ if( (result=pll_readreg(i2c,pll_addr,demod_addr,0xc2)) < 0)
+ return result;
+
+ if( (result >= 0) && (result&0x30) )
+ return 0;
+
+ return result;
+}
+
+/* Check we can see the I2c clients */
+static int cx22702_attach_adapter(struct i2c_adapter *adapter)
+{
+ struct cx22702_state *state;
+ struct i2c_client *client;
+ int ret;
+ int minfreq;
+ int pll_type;
+ int pll_addr;
+ int demod_addr;
+
+ if (0 == (adapter->class & I2C_CLASS_TV_DIGITAL)) {
+ dprintk("Ignoring adapter 0x%x:%s (no digital tv card).\n",
+ adapter->id, adapter->name);
+ return 0;
+ }
+
+ dprintk("Trying to attach to adapter 0x%x:%s.\n",
+ adapter->id, adapter->name);
+
+ if (!strcmp(adapter->name, "Conexant DVB-T reference design")) {
+ printk("cx22702: Detected Conexant DVB-T card - PLL Thomson DTT7579\n");
+ pll_type = PLLTYPE_DTT7579;
+ pll_addr = 0x60;
+ demod_addr = 0x43;
+ minfreq = 177000000; // guess
+ } else {
+ // default to Hauppauge Nova-T for the moment
+ printk("cx22702: Detected Hauppauge Nova-T DVB-T - PLL Thomson DTT759x\n");
+ ret=cx22702_validate_eeprom(adapter, &minfreq, &pll_type, &pll_addr, &demod_addr);
+ if(ret < 0)
+ return ret;
+ }
+
+ ret=cx22702_validate_demod(adapter, demod_addr);
+ if(ret < 0)
+ return ret;
+
+ ret=cx22702_validate_pll(adapter, pll_addr, demod_addr);
+ if(ret < 0)
+ return ret;
+
+ if ( !(state = kmalloc(sizeof(struct cx22702_state), GFP_KERNEL)) )
+ return -ENOMEM;
+
+ memset(state, 0, sizeof(struct cx22702_state));
+ state->i2c = adapter;
+ memcpy(&state->cx22702_info, &cx22702_info, sizeof(struct dvb_frontend_info));
+ state->cx22702_info.frequency_min = minfreq;
+ state->pll_type = pll_type;
+ state->pll_addr = pll_addr;
+ state->demod_addr = demod_addr;
+
+ if ( !(client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)) ) {
+ kfree(state);
+ return -ENOMEM;
+ }
+
+ memcpy(client, &client_template, sizeof(struct i2c_client));
+ client->adapter = adapter;
+ client->addr = state->demod_addr;
+ i2c_set_clientdata(client, state);
+
+ if ((ret = i2c_attach_client(client))) {
+ printk("cx22702: attach failed %i\n", ret);
+ kfree(client);
+ kfree(state);
+ return ret;
+ }
+ return 0;
+}
+
+static int cx22702_detach_client(struct i2c_client *client)
+{
+ struct cx22702_state *state = i2c_get_clientdata(client);
+
+ if (NULL != state->dvb) {
+ dvb_unregister_frontend (cx22702_ioctl, state->dvb);
+ state->dvb = NULL;
+ }
+ i2c_detach_client(client);
+ kfree(client);
+ return 0;
+}
+
+static int command(struct i2c_client *client, unsigned int cmd, void *arg)
+{
+ struct cx22702_state *state = i2c_get_clientdata(client);
+ int rc;
+
+ switch(cmd) {
+ case FE_REGISTER:
+ if (NULL != state->dvb)
+ break;
+ state->dvb = arg;
+ rc = dvb_register_frontend(cx22702_ioctl, state->dvb, state,
+ &state->cx22702_info, THIS_MODULE);
+ if (0 != rc) {
+ printk("cx22702: dvb_register_frontend failed with rc=%d\n",rc);
+ state->dvb = NULL;
+ return rc;
+ }
+ break;
+ case FE_UNREGISTER:
+ if (NULL == state->dvb)
+ break;
+ dvb_unregister_frontend (cx22702_ioctl, state->dvb);
+ state->dvb = NULL;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static struct i2c_driver driver = {
+ .owner = THIS_MODULE,
+ .name = FRONTEND_NAME,
+ .id = I2C_DRIVERID_DVBFE_CX22702,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = cx22702_attach_adapter,
+ .detach_client = cx22702_detach_client,
+ .command = command,
+};
+
+static struct i2c_client client_template = {
+ .name = FRONTEND_NAME,
+ .flags = I2C_CLIENT_ALLOW_USE,
+ .driver = &driver,
+};
+
+static int __init init_cx22702 (void)
+{
+ return i2c_add_driver(&driver);
+}
+
+static void __exit exit_cx22702 (void)
+{
+ if (i2c_del_driver(&driver))
+ printk(KERN_ERR "cx22702: driver deregistration failed.\n");
+}
+
+module_init (init_cx22702);
+module_exit (exit_cx22702);
+
+MODULE_PARM(debug,"i");
+MODULE_PARM_DESC(debug, "Enable verbose debug messages");
+MODULE_DESCRIPTION("CX22702 / Thomson DTT 759x / Thomson DTT 7579 PLL DVB Frontend driver");
+MODULE_AUTHOR("Steven Toth");
+MODULE_LICENSE("GPL");
+
--- /dev/null
+/*
+ * Driver for Zarlink DVB-T MT352 demodulator
+ *
+ * Written by Holger Waechtler <holger@qanu.de>
+ * and Daniel Mack <daniel@qanu.de>
+ *
+ * AVerMedia AVerTV DVB-T 771 support by
+ * Wolfram Joost <dbox2@frokaschwei.de>
+ *
+ * Support for Samsung TDTC9251DH01C(M) tuner
+ *
+ * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>
+ * Amauri Celani <acelani@essegi.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.=
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include "dvb_frontend.h"
+#include "mt352.h"
+
+#define FRONTEND_NAME "dvbfe_mt352"
+
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG FRONTEND_NAME ": " args); \
+ } while (0)
+
+static int debug;
+static int force_card = -1;
+static int card_type = -1;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+//FIXME: Should be an array.
+module_param(force_card, int, 0444);
+MODULE_PARM_DESC(force_card, "Force card type.\n\t(0 == AVDVBT771, 1 == TUA6034, "
+ "2 == TDTC9251DH01C).\n\tDefault is that AVDVBT771 is attempted "
+ "to be autodetected,\n\tif you do not have this card, you must "
+ "specify the card type here.");
+
+
+struct mt352_state {
+ struct i2c_adapter *i2c;
+ struct dvb_adapter *dvb;
+};
+
+#define mt352_write(ibuf, ilen) \
+do { \
+ struct i2c_msg msg = { .addr = I2C_MT352_ADDR, .flags = 0, \
+ .buf = ibuf, .len = ilen }; \
+ int err = i2c_transfer(i2c, &msg, 1); \
+ if (err != 1) { \
+ printk(KERN_WARNING \
+ "mt352_write() failed (err = %d)!\n", err); \
+ return err; \
+ } \
+} while (0)
+
+// FIXME:
+static struct _tuner_info tuner_info [] = {
+ //AVERMEDIA 771 board
+ {
+ .fe_frequency_min = 174000000,
+ .fe_frequency_max = 862000000,
+ .fe_frequency_stepsize = 83333,
+ .coderate_hp_shift = 7,
+ .coderate_lp_shift = 4,
+ .constellation_shift = 13,
+ .tx_mode_shift = 0,
+ .guard_interval_shift = 2,
+ .hierarchy_shift = 10,
+ .read_reg_flag = I2C_M_NOSTART,
+ .mt352_init = mt352_init_AVERMEDIA771,
+ .mt352_charge_pump = mt352_cp_AVERMEDIA771,
+ .mt352_band_select = mt352_bs_AVERMEDIA771
+ },
+ //TUA6034 tuner
+ {
+ .fe_frequency_min = 174000000,
+ .fe_frequency_max = 862000000,
+ .fe_frequency_stepsize = 166667,
+ .coderate_hp_shift = 9,
+ .coderate_lp_shift = 6,
+ .constellation_shift = 14,
+ .tx_mode_shift = 1,
+ .guard_interval_shift = 3,
+ .hierarchy_shift = 12,
+ .read_reg_flag = I2C_M_NOSTART,
+ .mt352_init = mt352_init_TUA6034,
+ .mt352_charge_pump = mt352_cp_TUA6034,
+ .mt352_band_select = mt352_bs_TUA6034
+ },
+ //TDTC9251DH01C tuner
+ {
+ .fe_frequency_min = 474000000,
+ .fe_frequency_max = 858000000,
+ .fe_frequency_stepsize = 166667,
+ .coderate_hp_shift = 9,
+ .coderate_lp_shift = 6,
+ .constellation_shift = 4,
+ .tx_mode_shift = 1,
+ .guard_interval_shift = 3,
+ .hierarchy_shift = 12,
+ .read_reg_flag = 0,
+ .mt352_init = mt352_init_TDTC9251DH01C,
+ .mt352_charge_pump = mt352_cp_TDTC9251DH01C,
+ .mt352_band_select = mt352_bs_TDTC9251DH01C
+ }
+};
+
+
+static struct dvb_frontend_info mt352_info = {
+ .name = "DVB-T Zarlink MT352 demodulator driver",
+ .type = FE_OFDM,
+/*
+ .frequency_min = 0,
+ .frequency_max = 0,
+ .frequency_stepsize = 0,
+ .frequency_tolerance = 0,
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 45000000,
+ .symbol_rate_tolerance = ???,
+*/
+ .notifier_delay = 0,
+ .caps = FE_CAN_INVERSION_AUTO | 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_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER |
+ FE_CAN_MUTE_TS
+};
+
+static int mt352_init_TUA6034(struct i2c_adapter *i2c)
+{
+ static u8 mt352_reset [] = { RESET, 0x80 };
+ static u8 mt352_clock_config [] = { CLOCK_CTL, 0x38, 0x2d };
+ static u8 mt352_adc_ctl_1_cfg [] = { ADC_CTL_1, 0x40 };
+ static u8 mt352_agc_cfg [] = { AGC_TARGET, 0x19, 0xa0 };
+ static u8 mt352_acq_ctl [] = { ACQ_CTL, 0x50 };
+
+ mt352_write(mt352_clock_config, sizeof(mt352_clock_config));
+ udelay(2000);
+ mt352_write(mt352_reset, sizeof(mt352_reset));
+ mt352_write(mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg));
+ mt352_write(mt352_acq_ctl, sizeof(mt352_acq_ctl));
+
+ mt352_write(mt352_agc_cfg, sizeof(mt352_agc_cfg));
+
+ return 0;
+}
+
+static int mt352_init_AVERMEDIA771(struct i2c_adapter *i2c)
+{
+ static u8 mt352_reset [] = { RESET, 0x80 };
+ static u8 mt352_clock_config [] = { CLOCK_CTL, 0x38, 0x2d };
+ static u8 mt352_adc_ctl_1_cfg [] = { ADC_CTL_1, 0x40 };
+ static u8 mt352_agc_cfg [] = { AGC_TARGET, 0x10, 0x23, 0x00, 0xFF, 0xFF,
+ 0x00, 0xFF, 0x00, 0x40, 0x40 };
+ static u8 mt352_acq_ctl [] = { ACQ_CTL, 0x50 };
+ static u8 mt352_av771_extra[] = { 0xB5, 0x7A };
+
+ mt352_write(mt352_clock_config, sizeof(mt352_clock_config));
+ udelay(2000);
+ mt352_write(mt352_reset, sizeof(mt352_reset));
+ mt352_write(mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg));
+ mt352_write(mt352_acq_ctl, sizeof(mt352_acq_ctl));
+
+ mt352_write(mt352_agc_cfg,sizeof(mt352_agc_cfg));
+ udelay(2000);
+ mt352_write(mt352_av771_extra,sizeof(mt352_av771_extra));
+
+ return 0;
+}
+
+static int mt352_init_TDTC9251DH01C(struct i2c_adapter *i2c)
+{
+ static u8 mt352_reset [] = { RESET, 0x80 };
+ static u8 mt352_clock_config [] = { CLOCK_CTL, 0x10, 0x2d };
+ static u8 mt352_adc_ctl_1_cfg [] = { ADC_CTL_1, 0x40 };
+ static u8 mt352_agc_cfg [] = { AGC_TARGET, 0x28, 0xa1 };
+ static u8 mt352_acq_ctl [] = { ACQ_CTL, 0x50 };
+
+ mt352_write(mt352_clock_config, sizeof(mt352_clock_config));
+ udelay(2000);
+ mt352_write(mt352_reset, sizeof(mt352_reset));
+ mt352_write(mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg));
+ mt352_write(mt352_acq_ctl, sizeof(mt352_acq_ctl));
+
+ mt352_write(mt352_agc_cfg, sizeof(mt352_agc_cfg));
+
+ return 0;
+}
+
+static unsigned char mt352_cp_TUA6034(u32 freq)
+{
+ unsigned char cp = 0;
+
+ if (freq < 542)
+ cp = 0xbe;
+ else if (freq < 830)
+ cp = 0xf6;
+ else
+ cp = 0xfe;
+
+ return cp;
+}
+
+static unsigned char mt352_cp_AVERMEDIA771(u32 freq)
+{
+ unsigned char cp = 0;
+
+ if (freq < 150)
+ cp = 0xB4;
+ else if (freq < 173)
+ cp = 0xBC;
+ else if (freq < 250)
+ cp = 0xB4;
+ else if (freq < 400)
+ cp = 0xBC;
+ else if (freq < 420)
+ cp = 0xF4;
+ else if (freq < 470)
+ cp = 0xFC;
+ else if (freq < 600)
+ cp = 0xBC;
+ else if (freq < 730)
+ cp = 0xF4;
+ else
+ cp = 0xFC;
+
+ return cp;
+}
+
+static unsigned char mt352_cp_TDTC9251DH01C(u32 freq)
+{
+ return(0xcc);
+}
+
+static unsigned char mt352_bs_TUA6034(u32 freq)
+{
+ unsigned char bs = 0;
+
+ if (freq < 250)
+ bs = 0x01;
+ else
+ bs = 0x08;
+
+ return bs;
+}
+
+static unsigned char mt352_bs_AVERMEDIA771(u32 freq)
+{
+ unsigned char bs = 0;
+
+ if (freq < 150)
+ bs = 0x01;
+ else if (freq < 173)
+ bs = 0x01;
+ else if (freq < 250)
+ bs = 0x02;
+ else if (freq < 400)
+ bs = 0x02;
+ else if (freq < 420)
+ bs = 0x02;
+ else if (freq < 470)
+ bs = 0x02;
+ else if (freq < 600)
+ bs = 0x08;
+ else if (freq < 730)
+ bs = 0x08;
+ else
+ bs = 0x08;
+
+ return bs;
+}
+
+static unsigned char mt352_bs_TDTC9251DH01C(u32 freq)
+{
+ unsigned char bs = 0;
+
+ if ((freq >= 48) && (freq <= 154)) /* low band */
+ bs = 0x09;
+
+ if ((freq >= 161) && (freq <= 439)) /* medium band */
+ bs = 0x0a;
+
+ if ((freq >= 447) && (freq <= 863)) /* high band */
+ bs = 0x08;
+
+ return bs;
+}
+
+
+static int mt352_detect_avermedia_771(struct i2c_adapter *i2c)
+{
+ int i;
+ u8 reg;
+ u8 id[4];
+ const u8 pciid[4] = { 0x07, 0x71, 0x14, 0x61 };
+ struct i2c_msg msg[2] =
+ {
+ {
+ .addr = 0x50,
+ .flags = I2C_M_NOSTART,
+ .buf = ®,
+ .len = 1
+ },
+ {
+ .addr = 0x50,
+ .flags = I2C_M_RD,
+ .len = 1
+ }
+ };
+
+ for (i = 0; i < 4; i++)
+ {
+ reg = i + 0xFC;
+ msg[1].buf = id + i;
+ if (i2c_transfer(i2c,msg,2) != 2)
+ {
+ return 0;
+ }
+ }
+
+ return *((u32 *) id) == *((u32 *) pciid);
+}
+
+static int mt352_init(struct i2c_adapter *i2c)
+{
+ /**
+ * all register write sequence have the register address of the
+ * first register in the first byte, thenafter the value to write
+ * into this and the following registers.
+ *
+ *
+ * We only write non-default settings, all default settings are
+ * restored by the full mt352_reset sequence.
+ *
+ *
+ * The optimal AGC target value and slope might vary from tuner
+ * type to tuner type, so check whether you need to adjust this one...
+ **/
+
+ return(MT352_INIT(i2c));
+}
+
+static int mt352_sleep(struct i2c_adapter *i2c)
+{
+ static u8 mt352_softdown[] = { 0x89, 0x20, 0x08 };
+
+ mt352_write(mt352_softdown, sizeof(mt352_softdown));
+
+ return 0;
+}
+
+static int mt352_set_parameters(struct i2c_adapter *i2c,
+ struct dvb_frontend_parameters *param)
+{
+ unsigned char buf[14];
+ unsigned int tps = 0;
+ struct dvb_ofdm_parameters *op = ¶m->u.ofdm;
+ u32 freq = param->frequency / 1000000;
+ uint16_t tmp;
+
+ switch (op->code_rate_HP) {
+ case FEC_2_3:
+ tps |= (1 << CODERATE_HP_SHIFT);
+ break;
+ case FEC_3_4:
+ tps |= (2 << CODERATE_HP_SHIFT);
+ break;
+ case FEC_5_6:
+ tps |= (3 << CODERATE_HP_SHIFT);
+ break;
+ case FEC_7_8:
+ tps |= (4 << CODERATE_HP_SHIFT);
+ break;
+ case FEC_1_2:
+ case FEC_AUTO:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (op->code_rate_LP) {
+ case FEC_2_3:
+ tps |= (1 << CODERATE_LP_SHIFT);
+ break;
+ case FEC_3_4:
+ tps |= (2 << CODERATE_LP_SHIFT);
+ break;
+ case FEC_5_6:
+ tps |= (3 << CODERATE_LP_SHIFT);
+ break;
+ case FEC_7_8:
+ tps |= (4 << CODERATE_LP_SHIFT);
+ break;
+ case FEC_1_2:
+ case FEC_AUTO:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (op->constellation) {
+ case QPSK:
+ break;
+ case QAM_AUTO:
+ case QAM_16:
+ tps |= (1 << CONSTELLATION_SHIFT);
+ break;
+ case QAM_64:
+ tps |= (2 << CONSTELLATION_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (op->transmission_mode) {
+ case TRANSMISSION_MODE_2K:
+ case TRANSMISSION_MODE_AUTO:
+ break;
+ case TRANSMISSION_MODE_8K:
+ tps |= (1 << TX_MODE_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (op->guard_interval) {
+ case GUARD_INTERVAL_1_32:
+ case GUARD_INTERVAL_AUTO:
+ break;
+ case GUARD_INTERVAL_1_16:
+ tps |= (1 << GUARD_INTERVAL_SHIFT);
+ break;
+ case GUARD_INTERVAL_1_8:
+ tps |= (2 << GUARD_INTERVAL_SHIFT);
+ break;
+ case GUARD_INTERVAL_1_4:
+ tps |= (3 << GUARD_INTERVAL_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (op->hierarchy_information) {
+ case HIERARCHY_AUTO:
+ case HIERARCHY_NONE:
+ break;
+ case HIERARCHY_1:
+ tps |= (1 << HIERARCHY_SHIFT);
+ break;
+ case HIERARCHY_2:
+ tps |= (2 << HIERARCHY_SHIFT);
+ break;
+ case HIERARCHY_4:
+ tps |= (3 << HIERARCHY_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+
+ buf[0] = TPS_GIVEN_1; /* TPS_GIVEN_1 and following registers */
+
+ buf[1] = msb(tps); /* TPS_GIVEN_(1|0) */
+ buf[2] = lsb(tps);
+
+ buf[3] = 0x50;
+
+ /**
+ * these settings assume 20.48MHz f_ADC, for other tuners you might
+ * need other values. See p. 33 in the MT352 Design Manual.
+ */
+ if (op->bandwidth == BANDWIDTH_8_MHZ) {
+ buf[4] = 0x72; /* TRL_NOMINAL_RATE_(1|0) */
+ buf[5] = 0x49;
+ } else if (op->bandwidth == BANDWIDTH_7_MHZ) {
+ buf[4] = 0x64;
+ buf[5] = 0x00;
+ } else { /* 6MHz */
+ buf[4] = 0x55;
+ buf[5] = 0xb7;
+ }
+
+ buf[6] = 0x31; /* INPUT_FREQ_(1|0), 20.48MHz clock, 36.166667MHz IF */
+ buf[7] = 0x05; /* see MT352 Design Manual page 32 for details */
+
+ buf[8] = I2C_TUNER_ADDR;
+
+ /**
+ * All the following settings are tuner module dependent,
+ * check the datasheet...
+ */
+
+ /* here we assume 1/6MHz == 166.66kHz stepsize */
+ #define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */
+ tmp = ((param->frequency*3)/500000) + IF_FREQUENCYx6;
+
+ buf[9] = msb(tmp); /* CHAN_START_(1|0) */
+ buf[10] = lsb(tmp);
+
+ buf[11] = MT352_CHARGE_PUMP(freq);
+ buf[12] = MT352_BAND_SELECT(freq);
+
+ buf[13] = 0x01; /* TUNER_GO!! */
+
+ mt352_write(buf, sizeof(buf));
+
+ return 0;
+}
+
+static u8 mt352_read_register(struct i2c_adapter *i2c, u8 reg)
+{
+ int ret;
+ u8 b0 [] = { reg };
+ u8 b1 [] = { 0 };
+ struct i2c_msg msg [] = { { .addr = I2C_MT352_ADDR,
+ .flags = READ_REG_FLAG,
+ .buf = b0, .len = 1 },
+ { .addr = I2C_MT352_ADDR,
+ .flags = I2C_M_RD,
+ .buf = b1, .len = 1 } };
+
+ ret = i2c_transfer(i2c, msg, 2);
+
+ if (ret != 2)
+ printk(KERN_WARNING
+ "%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
+
+ return b1[0];
+}
+
+
+static int mt352_get_parameters(struct i2c_adapter *i2c,
+ struct dvb_frontend_parameters *param)
+{
+ u16 tps;
+ u16 div;
+ u8 trl;
+ struct dvb_ofdm_parameters *op = ¶m->u.ofdm;
+ static const u8 tps_fec_to_api[8] =
+ {
+ FEC_1_2,
+ FEC_2_3,
+ FEC_3_4,
+ FEC_5_6,
+ FEC_7_8,
+ FEC_AUTO,
+ FEC_AUTO,
+ FEC_AUTO
+ };
+
+ if ( (mt352_read_register(i2c,0x00) & 0xC0) != 0xC0 )
+ {
+ return -EINVAL;
+ }
+
+ /* Use TPS_RECEIVED-registers, not the TPS_CURRENT-registers because
+ * the mt352 sometimes works with the wrong parameters
+ */
+ tps = (mt352_read_register(i2c, TPS_RECEIVED_1) << 8) | mt352_read_register(i2c, TPS_RECEIVED_0);
+ div = (mt352_read_register(i2c, CHAN_START_1) << 8) | mt352_read_register(i2c, CHAN_START_0);
+ trl = mt352_read_register(i2c, TRL_NOMINAL_RATE_1);
+
+ op->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7];
+ op->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7];
+
+ switch ( (tps >> 13) & 3)
+ {
+ case 0:
+ op->constellation = QPSK;
+ break;
+ case 1:
+ op->constellation = QAM_16;
+ break;
+ case 2:
+ op->constellation = QAM_64;
+ break;
+ default:
+ op->constellation = QAM_AUTO;
+ break;
+ }
+
+ op->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K : TRANSMISSION_MODE_2K;
+
+ switch ( (tps >> 2) & 3)
+ {
+ case 0:
+ op->guard_interval = GUARD_INTERVAL_1_32;
+ break;
+ case 1:
+ op->guard_interval = GUARD_INTERVAL_1_16;
+ break;
+ case 2:
+ op->guard_interval = GUARD_INTERVAL_1_8;
+ break;
+ case 3:
+ op->guard_interval = GUARD_INTERVAL_1_4;
+ break;
+ default:
+ op->guard_interval = GUARD_INTERVAL_AUTO;
+ break;
+ }
+
+ switch ( (tps >> 10) & 7)
+ {
+ case 0:
+ op->hierarchy_information = HIERARCHY_NONE;
+ break;
+ case 1:
+ op->hierarchy_information = HIERARCHY_1;
+ break;
+ case 2:
+ op->hierarchy_information = HIERARCHY_2;
+ break;
+ case 3:
+ op->hierarchy_information = HIERARCHY_4;
+ break;
+ default:
+ op->hierarchy_information = HIERARCHY_AUTO;
+ break;
+ }
+
+ param->frequency = ( 500 * (div - IF_FREQUENCYx6) ) / 3 * 1000;
+
+ if (trl == 0x72)
+ {
+ op->bandwidth = BANDWIDTH_8_MHZ;
+ }
+ else if (trl == 0x64)
+ {
+ op->bandwidth = BANDWIDTH_7_MHZ;
+ }
+ else
+ {
+ op->bandwidth = BANDWIDTH_6_MHZ;
+ }
+
+
+ if (mt352_read_register(i2c, STATUS_2) & 0x02)
+ param->inversion = INVERSION_OFF;
+ else
+ param->inversion = INVERSION_ON;
+
+ return 0;
+}
+
+
+static int mt352_ioctl(struct dvb_frontend *fe, unsigned int cmd, void *arg)
+{
+ struct mt352_state *state = fe->data;
+ struct i2c_adapter *i2c = state->i2c;
+ u8 r,snr;
+ fe_status_t *status;
+ u16 signal;
+ struct dvb_frontend_tune_settings *fe_tune_settings;
+
+ switch (cmd) {
+ case FE_GET_INFO:
+ memcpy (arg, &mt352_info, sizeof(struct dvb_frontend_info));
+ break;
+
+ case FE_READ_STATUS:
+ status = arg;
+ *status = 0;
+ r = mt352_read_register (i2c, STATUS_0);
+ if (r & (1 << 4))
+ *status = FE_HAS_CARRIER;
+ if (r & (1 << 1))
+ *status |= FE_HAS_VITERBI;
+ if (r & (1 << 5))
+ *status |= FE_HAS_LOCK;
+
+ r = mt352_read_register (i2c, STATUS_1);
+ if (r & (1 << 1))
+ *status |= FE_HAS_SYNC;
+
+ r = mt352_read_register (i2c, STATUS_3);
+ if (r & (1 << 6))
+ *status |= FE_HAS_SIGNAL;
+
+ break;
+
+ case FE_READ_BER:
+ *((u32 *) arg) = (mt352_read_register (i2c, RS_ERR_CNT_2) << 16) |
+ (mt352_read_register (i2c, RS_ERR_CNT_1) << 8) |
+ (mt352_read_register (i2c, RS_ERR_CNT_0));
+ break;
+
+ case FE_READ_SIGNAL_STRENGTH:
+ signal = (mt352_read_register (i2c, AGC_GAIN_3) << 8) |
+ (mt352_read_register (i2c, AGC_GAIN_2));
+ *((u16*) arg) = ~signal;
+ break;
+
+ case FE_READ_SNR:
+ snr = mt352_read_register (i2c, SNR);
+ *((u16*) arg) = (snr << 8) | snr;
+ break;
+
+ case FE_READ_UNCORRECTED_BLOCKS:
+ *(u32*) arg = (mt352_read_register (i2c, RS_UBC_1) << 8) |
+ (mt352_read_register (i2c, RS_UBC_0));
+ break;
+
+ case FE_SET_FRONTEND:
+ return mt352_set_parameters (i2c,
+ (struct dvb_frontend_parameters *) arg);
+
+ case FE_GET_FRONTEND:
+ return mt352_get_parameters (i2c,
+ (struct dvb_frontend_parameters *) arg);
+
+ case FE_GET_TUNE_SETTINGS:
+ fe_tune_settings = (struct dvb_frontend_tune_settings *) arg;
+ fe_tune_settings->min_delay_ms = 800;
+ fe_tune_settings->step_size = 0;
+ fe_tune_settings->max_drift = 0;
+ break;
+
+ case FE_SLEEP:
+ return mt352_sleep(i2c);
+
+ case FE_INIT:
+ return mt352_init(i2c);
+
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static struct i2c_client client_template;
+
+static int mt352_attach_adapter(struct i2c_adapter *i2c)
+{
+ struct mt352_state *state;
+ struct i2c_client *client;
+ static u8 mt352_reset_attach [] = { 0x50, 0xC0 };
+ int ret;
+
+ dprintk("Trying to attach to adapter 0x%x:%s.\n",
+ i2c->id, i2c->name);
+
+ /* set the proper MT352 frequency range */
+ mt352_info.frequency_min = FE_FREQ_MIN;
+ mt352_info.frequency_max = FE_FREQ_MAX;
+ mt352_info.frequency_stepsize = FE_FREQ_STEPSIZE;
+
+ if ( !(state = kmalloc(sizeof(struct mt352_state), GFP_KERNEL)) )
+ return -ENOMEM;
+
+ memset(state, 0, sizeof(struct mt352_state));
+ state->i2c = i2c;
+
+ if (mt352_detect_avermedia_771(i2c)) {
+ card_type = CARD_AVDVBT771;
+ } else if (force_card < 0) {
+ dprintk("Avermedia 771 not detected, maybe you should try the "
+ "'force_card' module parameter?.\n");
+ kfree(state);
+ return -ENODEV;
+ }
+
+ if (force_card > 0) {
+ if (card_type >= 0 && force_card != card_type)
+ printk(KERN_WARNING "dvbfe_mt352: Warning, overriding"
+ " detected card.\n");
+ card_type = force_card;
+ }
+
+ if (mt352_read_register(i2c, CHIP_ID) != ID_MT352) {
+ kfree(state);
+ return -ENODEV;
+ }
+
+ if (card_type == CARD_AVDVBT771)
+ printk(KERN_INFO FRONTEND_NAME ": Setup for Avermedia 771.\n");
+ else if (card_type == CARD_TUA6034)
+ printk(KERN_INFO FRONTEND_NAME ": Setup for TUA6034.\n");
+ else if (card_type == CARD_TDTC9251DH01C)
+ printk(KERN_INFO FRONTEND_NAME ": Setup for TDTC9251DH01C.\n");
+
+ /* Do a "hard" reset */
+ mt352_write(mt352_reset_attach, sizeof(mt352_reset_attach));
+
+ if ( !(client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)) ) {
+ kfree(state);
+ return -ENOMEM;
+ }
+
+ memcpy(client, &client_template, sizeof(struct i2c_client));
+ client->adapter = i2c;
+ client->addr = 0; // XXX
+ i2c_set_clientdata(client, state);
+
+ if ((ret = i2c_attach_client(client))) {
+ kfree(client);
+ kfree(state);
+ return ret;
+ }
+
+ BUG_ON(!state->dvb);
+
+ if ((ret = dvb_register_frontend(mt352_ioctl, state->dvb, state,
+ &mt352_info, THIS_MODULE))) {
+ i2c_detach_client(client);
+ kfree(client);
+ kfree(state);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mt352_detach_client(struct i2c_client *client)
+{
+ struct mt352_state *state = i2c_get_clientdata(client);
+
+ dvb_unregister_frontend_new (mt352_ioctl, state->dvb);
+ i2c_detach_client(client);
+ BUG_ON(state->dvb);
+ kfree(client);
+ kfree(state);
+ return 0;
+}
+
+static int mt352_command (struct i2c_client *client, unsigned int cmd, void *arg)
+{
+ struct mt352_state *state = i2c_get_clientdata(client);
+
+ switch (cmd) {
+ case FE_REGISTER:
+ state->dvb = arg;
+ break;
+ case FE_UNREGISTER:
+ state->dvb = NULL;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+static struct i2c_driver driver = {
+ .owner = THIS_MODULE,
+ .name = FRONTEND_NAME,
+ .id = I2C_DRIVERID_DVBFE_MT352,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = mt352_attach_adapter,
+ .detach_client = mt352_detach_client,
+ .command = mt352_command,
+};
+
+static struct i2c_client client_template = {
+ .name = FRONTEND_NAME,
+ .flags = I2C_CLIENT_ALLOW_USE,
+ .driver = &driver,
+};
+
+static int __init mt352_module_init(void)
+{
+ return i2c_add_driver(&driver);
+}
+
+static void __exit mt352_module_exit(void)
+{
+ if (i2c_del_driver(&driver))
+ printk(KERN_ERR "mt352: driver deregistration failed.\n");
+}
+
+module_init(mt352_module_init);
+module_exit(mt352_module_exit);
+
+MODULE_DESCRIPTION("DVB-T MT352 Zarlink");
+MODULE_AUTHOR("Holger Waechtler, Daniel Mack, Antonio Mancuso");
+MODULE_LICENSE("GPL");
+
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