--- /dev/null
+ /*
+ Driver for Philips tda10086 DVBS Demodulator
+
+ (c) 2006 Andrew de Quincey
+
+ 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/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "dvb_frontend.h"
+#include "tda10086.h"
+
+#define SACLK 96000000
+
+struct tda10086_state {
+ struct i2c_adapter* i2c;
+ const struct tda10086_config* config;
+ struct dvb_frontend frontend;
+
+ /* private demod data */
+ u32 frequency;
+ u32 symbol_rate;
+};
+
+static int debug = 1;
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG "tda10086: " args); \
+ } while (0)
+
+static int tda10086_write_byte(struct tda10086_state *state, int reg, int data)
+{
+ int ret;
+ u8 b0[] = { reg, data };
+ struct i2c_msg msg = { .flags = 0, .buf = b0, .len = 2 };
+
+ msg.addr = state->config->demod_address;
+ ret = i2c_transfer(state->i2c, &msg, 1);
+
+ if (ret != 1)
+ dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n",
+ __FUNCTION__, reg, data, ret);
+
+ return (ret != 1) ? ret : 0;
+}
+
+static int tda10086_read_byte(struct tda10086_state *state, int reg)
+{
+ int ret;
+ u8 b0[] = { reg };
+ u8 b1[] = { 0 };
+ struct i2c_msg msg[] = {{ .flags = 0, .buf = b0, .len = 1 },
+ { .flags = I2C_M_RD, .buf = b1, .len = 1 }};
+
+ msg[0].addr = state->config->demod_address;
+ msg[1].addr = state->config->demod_address;
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2) {
+ dprintk("%s: error reg=0x%x, ret=%i\n", __FUNCTION__, reg,
+ ret);
+ return ret;
+ }
+
+ return b1[0];
+}
+
+static int tda10086_write_mask(struct tda10086_state *state, int reg, int mask, int data)
+{
+ int val;
+
+ // read a byte and check
+ val = tda10086_read_byte(state, reg);
+ if (val < 0)
+ return val;
+
+ // mask if off
+ val = val & ~mask;
+ val |= data & 0xff;
+
+ // write it out again
+ return tda10086_write_byte(state, reg, val);
+}
+
+static int tda10086_init(struct dvb_frontend* fe)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ // reset
+ tda10086_write_byte(state, 0x00, 0x00);
+ msleep(10);
+
+ // misc setup
+ tda10086_write_byte(state, 0x01, 0x94);
+ tda10086_write_byte(state, 0x02, 0x35); // NOTE: TT drivers appear to disable CSWP
+ tda10086_write_byte(state, 0x03, 0x64);
+ tda10086_write_byte(state, 0x04, 0x43);
+ tda10086_write_byte(state, 0x0c, 0x0c);
+ tda10086_write_byte(state, 0x1b, 0xb0); // noise threshold
+ tda10086_write_byte(state, 0x20, 0x89); // misc
+ tda10086_write_byte(state, 0x30, 0x04); // acquisition period length
+ tda10086_write_byte(state, 0x32, 0x00); // irq off
+ tda10086_write_byte(state, 0x31, 0x56); // setup AFC
+
+ // setup PLL (assumes 16Mhz XIN)
+ tda10086_write_byte(state, 0x55, 0x2c); // misc PLL setup
+ tda10086_write_byte(state, 0x3a, 0x0b); // M=12
+ tda10086_write_byte(state, 0x3b, 0x01); // P=2
+ tda10086_write_mask(state, 0x55, 0x20, 0x00); // powerup PLL
+
+ // setup TS interface
+ tda10086_write_byte(state, 0x11, 0x81);
+ tda10086_write_byte(state, 0x12, 0x81);
+ tda10086_write_byte(state, 0x19, 0x40); // parallel mode A + MSBFIRST
+ tda10086_write_byte(state, 0x56, 0x80); // powerdown WPLL - unused in the mode we use
+ tda10086_write_byte(state, 0x57, 0x08); // bypass WPLL - unused in the mode we use
+ tda10086_write_byte(state, 0x10, 0x2a);
+
+ // setup ADC
+ tda10086_write_byte(state, 0x58, 0x61); // ADC setup
+ tda10086_write_mask(state, 0x58, 0x01, 0x00); // powerup ADC
+
+ // setup AGC
+ tda10086_write_byte(state, 0x05, 0x0B);
+ tda10086_write_byte(state, 0x37, 0x63);
+ tda10086_write_byte(state, 0x3f, 0x03); // NOTE: flydvb uses 0x0a and varies it
+ tda10086_write_byte(state, 0x40, 0x64);
+ tda10086_write_byte(state, 0x41, 0x4f);
+ tda10086_write_byte(state, 0x42, 0x43);
+
+ // setup viterbi
+ tda10086_write_byte(state, 0x1a, 0x11); // VBER 10^6, DVB, QPSK
+
+ // setup carrier recovery
+ tda10086_write_byte(state, 0x3d, 0x80);
+
+ // setup SEC
+ tda10086_write_byte(state, 0x36, 0x00); // all SEC off
+ tda10086_write_byte(state, 0x34, (((1<<19) * (22000/1000)) / (SACLK/1000))); // } tone frequency
+ tda10086_write_byte(state, 0x35, (((1<<19) * (22000/1000)) / (SACLK/1000)) >> 8); // }
+
+ return 0;
+}
+
+static void tda10086_diseqc_wait(struct tda10086_state *state)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(200);
+ while (!(tda10086_read_byte(state, 0x50) & 0x01)) {
+ if(time_after(jiffies, timeout)) {
+ printk("%s: diseqc queue not ready, command may be lost.\n", __FUNCTION__);
+ break;
+ }
+ msleep(10);
+ }
+}
+
+static int tda10086_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ switch(tone) {
+ case SEC_TONE_OFF:
+ tda10086_write_byte(state, 0x36, 0x00);
+ break;
+
+ case SEC_TONE_ON:
+ tda10086_write_byte(state, 0x36, 0x01);
+ break;
+ }
+
+ return 0;
+}
+
+static int tda10086_send_master_cmd (struct dvb_frontend* fe,
+ struct dvb_diseqc_master_cmd* cmd)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ int i;
+ u8 oldval;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ if (cmd->msg_len > 6)
+ return -EINVAL;
+ oldval = tda10086_read_byte(state, 0x36);
+
+ for(i=0; i< cmd->msg_len; i++) {
+ tda10086_write_byte(state, 0x48+i, cmd->msg[i]);
+ }
+ tda10086_write_byte(state, 0x36, 0x08 | ((cmd->msg_len + 1) << 4));
+
+ tda10086_diseqc_wait(state);
+
+ tda10086_write_byte(state, 0x36, oldval);
+
+ return 0;
+}
+
+static int tda10086_send_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ u8 oldval = tda10086_read_byte(state, 0x36);
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ switch(minicmd) {
+ case SEC_MINI_A:
+ tda10086_write_byte(state, 0x36, 0x04);
+ break;
+
+ case SEC_MINI_B:
+ tda10086_write_byte(state, 0x36, 0x06);
+ break;
+ }
+
+ tda10086_diseqc_wait(state);
+
+ tda10086_write_byte(state, 0x36, oldval);
+
+ return 0;
+}
+
+static int tda10086_set_inversion(struct tda10086_state *state,
+ struct dvb_frontend_parameters *fe_params)
+{
+ u8 invval = 0x80;
+
+ dprintk ("%s %i %i\n", __FUNCTION__, fe_params->inversion, state->config->invert);
+
+ switch(fe_params->inversion) {
+ case INVERSION_OFF:
+ if (state->config->invert)
+ invval = 0x40;
+ break;
+ case INVERSION_ON:
+ if (!state->config->invert)
+ invval = 0x40;
+ break;
+ case INVERSION_AUTO:
+ invval = 0x00;
+ break;
+ }
+ tda10086_write_mask(state, 0x0c, 0xc0, invval);
+
+ return 0;
+}
+
+static int tda10086_set_symbol_rate(struct tda10086_state *state,
+ struct dvb_frontend_parameters *fe_params)
+{
+ u8 dfn = 0;
+ u8 afs = 0;
+ u8 byp = 0;
+ u8 reg37 = 0x43;
+ u8 reg42 = 0x43;
+ u64 big;
+ u32 tmp;
+ u32 bdr;
+ u32 bdri;
+ u32 symbol_rate = fe_params->u.qpsk.symbol_rate;
+
+ dprintk ("%s %i\n", __FUNCTION__, symbol_rate);
+
+ // setup the decimation and anti-aliasing filters..
+ if (symbol_rate < (u32) (SACLK * 0.0137)) {
+ dfn=4;
+ afs=1;
+ } else if (symbol_rate < (u32) (SACLK * 0.0208)) {
+ dfn=4;
+ afs=0;
+ } else if (symbol_rate < (u32) (SACLK * 0.0270)) {
+ dfn=3;
+ afs=1;
+ } else if (symbol_rate < (u32) (SACLK * 0.0416)) {
+ dfn=3;
+ afs=0;
+ } else if (symbol_rate < (u32) (SACLK * 0.0550)) {
+ dfn=2;
+ afs=1;
+ } else if (symbol_rate < (u32) (SACLK * 0.0833)) {
+ dfn=2;
+ afs=0;
+ } else if (symbol_rate < (u32) (SACLK * 0.1100)) {
+ dfn=1;
+ afs=1;
+ } else if (symbol_rate < (u32) (SACLK * 0.1666)) {
+ dfn=1;
+ afs=0;
+ } else if (symbol_rate < (u32) (SACLK * 0.2200)) {
+ dfn=0;
+ afs=1;
+ } else if (symbol_rate < (u32) (SACLK * 0.3333)) {
+ dfn=0;
+ afs=0;
+ } else {
+ reg37 = 0x63;
+ reg42 = 0x4f;
+ byp=1;
+ }
+
+ // calculate BDR
+ big = (1ULL<<21) * ((u64) symbol_rate/1000ULL) * (1ULL<<dfn);
+ big += ((SACLK/1000ULL)-1ULL);
+ do_div(big, (SACLK/1000ULL));
+ bdr = big & 0xfffff;
+
+ // calculate BDRI
+ tmp = (1<<dfn)*(symbol_rate/1000);
+ bdri = ((32 * (SACLK/1000)) + (tmp-1)) / tmp;
+
+ tda10086_write_byte(state, 0x21, (afs << 7) | dfn);
+ tda10086_write_mask(state, 0x20, 0x08, byp << 3);
+ tda10086_write_byte(state, 0x06, bdr);
+ tda10086_write_byte(state, 0x07, bdr >> 8);
+ tda10086_write_byte(state, 0x08, bdr >> 16);
+ tda10086_write_byte(state, 0x09, bdri);
+ tda10086_write_byte(state, 0x37, reg37);
+ tda10086_write_byte(state, 0x42, reg42);
+
+ return 0;
+}
+
+static int tda10086_set_fec(struct tda10086_state *state,
+ struct dvb_frontend_parameters *fe_params)
+{
+ u8 fecval;
+
+ dprintk ("%s %i\n", __FUNCTION__, fe_params->u.qpsk.fec_inner);
+
+ switch(fe_params->u.qpsk.fec_inner) {
+ case FEC_1_2:
+ fecval = 0x00;
+ break;
+ case FEC_2_3:
+ fecval = 0x01;
+ break;
+ case FEC_3_4:
+ fecval = 0x02;
+ break;
+ case FEC_4_5:
+ fecval = 0x03;
+ break;
+ case FEC_5_6:
+ fecval = 0x04;
+ break;
+ case FEC_6_7:
+ fecval = 0x05;
+ break;
+ case FEC_7_8:
+ fecval = 0x06;
+ break;
+ case FEC_8_9:
+ fecval = 0x07;
+ break;
+ case FEC_AUTO:
+ fecval = 0x08;
+ break;
+ default:
+ return -1;
+ }
+ tda10086_write_byte(state, 0x0d, fecval);
+
+ return 0;
+}
+
+static int tda10086_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fe_params)
+{
+ struct tda10086_state *state = fe->demodulator_priv;
+ int ret;
+ u32 freq = 0;
+ int freqoff;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ // set params
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe, fe_params);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (fe->ops.tuner_ops.get_frequency)
+ fe->ops.tuner_ops.get_frequency(fe, &freq);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+
+ // calcluate the frequency offset (in *Hz* not kHz)
+ freqoff = fe_params->frequency - freq;
+ freqoff = ((1<<16) * freqoff) / (SACLK/1000);
+ tda10086_write_byte(state, 0x3d, 0x80 | ((freqoff >> 8) & 0x7f));
+ tda10086_write_byte(state, 0x3e, freqoff);
+
+ if ((ret = tda10086_set_inversion(state, fe_params)) < 0)
+ return ret;
+ if ((ret = tda10086_set_symbol_rate(state, fe_params)) < 0)
+ return ret;
+ if ((ret = tda10086_set_fec(state, fe_params)) < 0)
+ return ret;
+
+ // soft reset + disable TS output until lock
+ tda10086_write_mask(state, 0x10, 0x40, 0x40);
+ tda10086_write_mask(state, 0x00, 0x01, 0x00);
+
+ state->symbol_rate = fe_params->u.qpsk.symbol_rate;
+ state->frequency = fe_params->frequency;
+ return 0;
+}
+
+static int tda10086_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *fe_params)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ u8 val;
+ int tmp;
+ u64 tmp64;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ // calculate the updated frequency (note: we convert from Hz->kHz)
+ tmp64 = tda10086_read_byte(state, 0x52);
+ tmp64 |= (tda10086_read_byte(state, 0x51) << 8);
+ if (tmp64 & 0x8000)
+ tmp64 |= 0xffffffffffff0000ULL;
+ tmp64 = (tmp64 * (SACLK/1000ULL));
+ do_div(tmp64, (1ULL<<15) * (1ULL<<1));
+ fe_params->frequency = (int) state->frequency + (int) tmp64;
+
+ // the inversion
+ val = tda10086_read_byte(state, 0x0c);
+ if (val & 0x80) {
+ switch(val & 0x40) {
+ case 0x00:
+ fe_params->inversion = INVERSION_OFF;
+ if (state->config->invert)
+ fe_params->inversion = INVERSION_ON;
+ break;
+ default:
+ fe_params->inversion = INVERSION_ON;
+ if (state->config->invert)
+ fe_params->inversion = INVERSION_OFF;
+ break;
+ }
+ } else {
+ tda10086_read_byte(state, 0x0f);
+ switch(val & 0x02) {
+ case 0x00:
+ fe_params->inversion = INVERSION_OFF;
+ if (state->config->invert)
+ fe_params->inversion = INVERSION_ON;
+ break;
+ default:
+ fe_params->inversion = INVERSION_ON;
+ if (state->config->invert)
+ fe_params->inversion = INVERSION_OFF;
+ break;
+ }
+ }
+
+ // calculate the updated symbol rate
+ tmp = tda10086_read_byte(state, 0x1d);
+ if (tmp & 0x80)
+ tmp |= 0xffffff00;
+ tmp = (tmp * 480 * (1<<1)) / 128;
+ tmp = ((state->symbol_rate/1000) * tmp) / (1000000/1000);
+ fe_params->u.qpsk.symbol_rate = state->symbol_rate + tmp;
+
+ // the FEC
+ val = (tda10086_read_byte(state, 0x0d) & 0x70) >> 4;
+ switch(val) {
+ case 0x00:
+ fe_params->u.qpsk.fec_inner = FEC_1_2;
+ break;
+ case 0x01:
+ fe_params->u.qpsk.fec_inner = FEC_2_3;
+ break;
+ case 0x02:
+ fe_params->u.qpsk.fec_inner = FEC_3_4;
+ break;
+ case 0x03:
+ fe_params->u.qpsk.fec_inner = FEC_4_5;
+ break;
+ case 0x04:
+ fe_params->u.qpsk.fec_inner = FEC_5_6;
+ break;
+ case 0x05:
+ fe_params->u.qpsk.fec_inner = FEC_6_7;
+ break;
+ case 0x06:
+ fe_params->u.qpsk.fec_inner = FEC_7_8;
+ break;
+ case 0x07:
+ fe_params->u.qpsk.fec_inner = FEC_8_9;
+ break;
+ }
+
+ return 0;
+}
+
+static int tda10086_read_status(struct dvb_frontend* fe, fe_status_t *fe_status)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ u8 val;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ val = tda10086_read_byte(state, 0x0e);
+ *fe_status = 0;
+ if (val & 0x01)
+ *fe_status |= FE_HAS_SIGNAL;
+ if (val & 0x02)
+ *fe_status |= FE_HAS_CARRIER;
+ if (val & 0x04)
+ *fe_status |= FE_HAS_VITERBI;
+ if (val & 0x08)
+ *fe_status |= FE_HAS_SYNC;
+ if (val & 0x10)
+ *fe_status |= FE_HAS_LOCK;
+
+ return 0;
+}
+
+static int tda10086_read_signal_strength(struct dvb_frontend* fe, u16 * signal)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ u8 _str;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ _str = tda10086_read_byte(state, 0x43);
+ *signal = (_str << 8) | _str;
+
+ return 0;
+}
+
+static int tda10086_read_snr(struct dvb_frontend* fe, u16 * snr)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+ u8 _snr;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ _snr = tda10086_read_byte(state, 0x1c);
+ *snr = (_snr << 8) | _snr;
+
+ return 0;
+}
+
+static int tda10086_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ // read it
+ *ucblocks = tda10086_read_byte(state, 0x18) & 0x7f;
+
+ // reset counter
+ tda10086_write_byte(state, 0x18, 0x00);
+ tda10086_write_byte(state, 0x18, 0x80);
+
+ return 0;
+}
+
+static int tda10086_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ // read it
+ *ber = 0;
+ *ber |= tda10086_read_byte(state, 0x15);
+ *ber |= tda10086_read_byte(state, 0x16) << 8;
+ *ber |= (tda10086_read_byte(state, 0x17) & 0xf) << 16;
+
+ return 0;
+}
+
+static int tda10086_sleep(struct dvb_frontend* fe)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ tda10086_write_mask(state, 0x00, 0x08, 0x08);
+
+ return 0;
+}
+
+static int tda10086_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+ struct tda10086_state* state = fe->demodulator_priv;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ if (enable) {
+ tda10086_write_mask(state, 0x00, 0x10, 0x10);
+ } else {
+ tda10086_write_mask(state, 0x00, 0x10, 0x00);
+ }
+
+ return 0;
+}
+
+static int tda10086_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+{
+ if (fesettings->parameters.u.qpsk.symbol_rate > 20000000) {
+ fesettings->min_delay_ms = 50;
+ fesettings->step_size = 2000;
+ fesettings->max_drift = 8000;
+ } else if (fesettings->parameters.u.qpsk.symbol_rate > 12000000) {
+ fesettings->min_delay_ms = 100;
+ fesettings->step_size = 1500;
+ fesettings->max_drift = 9000;
+ } else if (fesettings->parameters.u.qpsk.symbol_rate > 8000000) {
+ fesettings->min_delay_ms = 100;
+ fesettings->step_size = 1000;
+ fesettings->max_drift = 8000;
+ } else if (fesettings->parameters.u.qpsk.symbol_rate > 4000000) {
+ fesettings->min_delay_ms = 100;
+ fesettings->step_size = 500;
+ fesettings->max_drift = 7000;
+ } else if (fesettings->parameters.u.qpsk.symbol_rate > 2000000) {
+ fesettings->min_delay_ms = 200;
+ fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000);
+ fesettings->max_drift = 14 * fesettings->step_size;
+ } else {
+ fesettings->min_delay_ms = 200;
+ fesettings->step_size = (fesettings->parameters.u.qpsk.symbol_rate / 8000);
+ fesettings->max_drift = 18 * fesettings->step_size;
+ }
+
+ return 0;
+}
+
+static void tda10086_release(struct dvb_frontend* fe)
+{
+ struct tda10086_state *state = fe->demodulator_priv;
+ tda10086_sleep(fe);
+ kfree(state);
+}
+
+static struct dvb_frontend_ops tda10086_ops = {
+
+ .info = {
+ .name = "Philips TDA10086 DVB-S",
+ .type = FE_QPSK,
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_stepsize = 125, /* kHz for QPSK frontends */
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 45000000,
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+ FE_CAN_QPSK
+ },
+
+ .release = tda10086_release,
+
+ .init = tda10086_init,
+ .sleep = tda10086_sleep,
+ .i2c_gate_ctrl = tda10086_i2c_gate_ctrl,
+
+ .set_frontend = tda10086_set_frontend,
+ .get_frontend = tda10086_get_frontend,
+ .get_tune_settings = tda10086_get_tune_settings,
+
+ .read_status = tda10086_read_status,
+ .read_ber = tda10086_read_ber,
+ .read_signal_strength = tda10086_read_signal_strength,
+ .read_snr = tda10086_read_snr,
+ .read_ucblocks = tda10086_read_ucblocks,
+
+ .diseqc_send_master_cmd = tda10086_send_master_cmd,
+ .diseqc_send_burst = tda10086_send_burst,
+ .set_tone = tda10086_set_tone,
+};
+
+struct dvb_frontend* tda10086_attach(const struct tda10086_config* config,
+ struct i2c_adapter* i2c)
+{
+ struct tda10086_state *state;
+
+ dprintk ("%s\n", __FUNCTION__);
+
+ /* allocate memory for the internal state */
+ state = kmalloc(sizeof(struct tda10086_state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ /* setup the state */
+ state->config = config;
+ state->i2c = i2c;
+
+ /* check if the demod is there */
+ if (tda10086_read_byte(state, 0x1e) != 0xe1) {
+ kfree(state);
+ return NULL;
+ }
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &tda10086_ops, sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Philips TDA10086 DVB-S Demodulator");
+MODULE_AUTHOR("Andrew de Quincey");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(tda10086_attach);
--- /dev/null
+ /*
+ Driver for Philips tda8262/tda8263 DVBS Silicon tuners
+
+ (c) 2006 Andrew de Quincey
+
+ 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/module.h>
+#include <linux/dvb/frontend.h>
+#include <asm/types.h>
+
+#include "tda826x.h"
+
+struct tda826x_priv {
+ /* i2c details */
+ int i2c_address;
+ struct i2c_adapter *i2c;
+ u8 has_loopthrough:1;
+ u32 frequency;
+};
+
+static int tda826x_release(struct dvb_frontend *fe)
+{
+ if (fe->tuner_priv)
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int tda826x_sleep(struct dvb_frontend *fe)
+{
+ struct tda826x_priv *priv = fe->tuner_priv;
+ int ret;
+ u8 buf [] = { 0x00, 0x8d };
+ struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = buf, .len = 2 };
+
+ if (!priv->has_loopthrough)
+ buf[1] = 0xad;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) {
+ printk("%s: i2c error\n", __FUNCTION__);
+ }
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ printk("%s:\n", __FUNCTION__);
+
+ return (ret == 1) ? 0 : ret;
+}
+
+static int tda826x_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
+{
+ struct tda826x_priv *priv = fe->tuner_priv;
+ int ret;
+ u32 div;
+ u8 buf [11];
+ struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = buf, .len = 11 };
+
+ div = (params->frequency + (1000-1)) / 1000;
+
+ buf[0] = 0x00; // subaddress
+ buf[1] = 0x09; // powerdown RSSI + the magic value 1
+ if (!priv->has_loopthrough)
+ buf[1] |= 0x20; // power down loopthrough if not needed
+ buf[2] = (1<<5) | 0x0b; // 1Mhz + 0.45 VCO
+ buf[3] = div >> 7;
+ buf[4] = div << 1;
+ buf[5] = 0xff; // basedband filter to max
+ buf[6] = 0xfe; // gains at max + no RF attenuation
+ buf[7] = 0x83; // charge pumps at high, tests off
+ buf[8] = 0x80; // recommended value 4 for AMPVCO + disable ports.
+ buf[9] = 0x1a; // normal caltime + recommended values for SELTH + SELVTL
+ buf[10] = 0xd4; // recommended value 13 for BBIAS + unknown bit set on
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) {
+ printk("%s: i2c error\n", __FUNCTION__);
+ }
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ priv->frequency = div * 1000;
+ printk("%s:\n", __FUNCTION__);
+
+ return (ret == 1) ? 0 : ret;
+}
+
+static int tda826x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct tda826x_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static struct dvb_tuner_ops tda826x_tuner_ops = {
+ .release = tda826x_release,
+ .sleep = tda826x_sleep,
+ .set_params = tda826x_set_params,
+ .get_frequency = tda826x_get_frequency,
+};
+
+struct dvb_frontend *tda826x_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c, int has_loopthrough)
+{
+ struct tda826x_priv *priv = NULL;
+ u8 b1 [] = { 0, 0 };
+ struct i2c_msg msg [] = { { .addr = addr, .flags = 0, .buf = NULL, .len = 0 },
+ { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 } };
+ int ret;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ ret = i2c_transfer (i2c, msg, 2);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (ret != 2)
+ return NULL;
+ if (!(b1[1] & 0x80))
+ return NULL;
+
+ priv = kzalloc(sizeof(struct tda826x_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->i2c_address = addr;
+ priv->i2c = i2c;
+ priv->has_loopthrough = has_loopthrough;
+
+ memcpy(&fe->ops.tuner_ops, &tda826x_tuner_ops, sizeof(struct dvb_tuner_ops));
+ strncpy(fe->ops.tuner_ops.info.name, "Philips TDA826X", 128);
+ fe->ops.tuner_ops.info.frequency_min = 950000;
+ fe->ops.tuner_ops.info.frequency_min = 2175000;
+
+ fe->tuner_priv = priv;
+ printk("%s:\n", __FUNCTION__);
+
+ return fe;
+}
+EXPORT_SYMBOL(tda826x_attach);
+
+MODULE_DESCRIPTION("DVB TDA826x driver");
+MODULE_AUTHOR("Andrew de Quincey");
+MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff