--- /dev/null
+/*
+ Driver for Philips TDA8083 based QPSK Demodulator
+
+ Copyright (C) 2001 Convergence Integrated Media GmbH
+
+ written by Ralph Metzler <ralph@convergence.de>
+
+ adoption to the new DVB frontend API and diagnostic ioctl's
+ by Holger Waechtler <holger@convergence.de>
+
+ 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/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include "dvb_frontend.h"
+#include "tda8083.h"
+
+
+struct tda8083_state {
+ struct i2c_adapter* i2c;
+ /* configuration settings */
+ const struct tda8083_config* config;
+ struct dvb_frontend frontend;
+};
+
+static int debug;
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG "tda8083: " args); \
+ } while (0)
+
+
+static u8 tda8083_init_tab [] = {
+ 0x04, 0x00, 0x4a, 0x79, 0x04, 0x00, 0xff, 0xea,
+ 0x48, 0x42, 0x79, 0x60, 0x70, 0x52, 0x9a, 0x10,
+ 0x0e, 0x10, 0xf2, 0xa7, 0x93, 0x0b, 0x05, 0xc8,
+ 0x9d, 0x00, 0x42, 0x80, 0x00, 0x60, 0x40, 0x00,
+ 0x00, 0x75, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00
+};
+
+
+static int tda8083_writereg (struct tda8083_state* state, u8 reg, u8 data)
+{
+ int ret;
+ u8 buf [] = { reg, data };
+ struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
+
+ ret = i2c_transfer(state->i2c, &msg, 1);
+
+ if (ret != 1)
+ dprintk ("%s: writereg error (reg %02x, ret == %i)\n",
+ __func__, reg, ret);
+
+ return (ret != 1) ? -1 : 0;
+}
+
+static int tda8083_readregs (struct tda8083_state* state, u8 reg1, u8 *b, u8 len)
+{
+ int ret;
+ struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 },
+ { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
+
+ ret = i2c_transfer(state->i2c, msg, 2);
+
+ if (ret != 2)
+ dprintk ("%s: readreg error (reg %02x, ret == %i)\n",
+ __func__, reg1, ret);
+
+ return ret == 2 ? 0 : -1;
+}
+
+static inline u8 tda8083_readreg (struct tda8083_state* state, u8 reg)
+{
+ u8 val;
+
+ tda8083_readregs (state, reg, &val, 1);
+
+ return val;
+}
+
+static int tda8083_set_inversion (struct tda8083_state* state, fe_spectral_inversion_t inversion)
+{
+ /* XXX FIXME: implement other modes than FEC_AUTO */
+ if (inversion == INVERSION_AUTO)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int tda8083_set_fec (struct tda8083_state* state, fe_code_rate_t fec)
+{
+ if (fec == FEC_AUTO)
+ return tda8083_writereg (state, 0x07, 0xff);
+
+ if (fec >= FEC_1_2 && fec <= FEC_8_9)
+ return tda8083_writereg (state, 0x07, 1 << (FEC_8_9 - fec));
+
+ return -EINVAL;
+}
+
+static fe_code_rate_t tda8083_get_fec (struct tda8083_state* state)
+{
+ u8 index;
+ static fe_code_rate_t fec_tab [] = { FEC_8_9, FEC_1_2, FEC_2_3, FEC_3_4,
+ FEC_4_5, FEC_5_6, FEC_6_7, FEC_7_8 };
+
+ index = tda8083_readreg(state, 0x0e) & 0x07;
+
+ return fec_tab [index];
+}
+
+static int tda8083_set_symbolrate (struct tda8083_state* state, u32 srate)
+{
+ u32 ratio;
+ u32 tmp;
+ u8 filter;
+
+ if (srate > 32000000)
+ srate = 32000000;
+ if (srate < 500000)
+ srate = 500000;
+
+ filter = 0;
+ if (srate < 24000000)
+ filter = 2;
+ if (srate < 16000000)
+ filter = 3;
+
+ tmp = 31250 << 16;
+ ratio = tmp / srate;
+
+ tmp = (tmp % srate) << 8;
+ ratio = (ratio << 8) + tmp / srate;
+
+ tmp = (tmp % srate) << 8;
+ ratio = (ratio << 8) + tmp / srate;
+
+ dprintk("tda8083: ratio == %08x\n", (unsigned int) ratio);
+
+ tda8083_writereg (state, 0x05, filter);
+ tda8083_writereg (state, 0x02, (ratio >> 16) & 0xff);
+ tda8083_writereg (state, 0x03, (ratio >> 8) & 0xff);
+ tda8083_writereg (state, 0x04, (ratio ) & 0xff);
+
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 1;
+}
+
+static void tda8083_wait_diseqc_fifo (struct tda8083_state* state, int timeout)
+{
+ unsigned long start = jiffies;
+
+ while (jiffies - start < timeout &&
+ !(tda8083_readreg(state, 0x02) & 0x80))
+ {
+ msleep(50);
+ }
+}
+
+static int tda8083_set_tone (struct tda8083_state* state, fe_sec_tone_mode_t tone)
+{
+ tda8083_writereg (state, 0x26, 0xf1);
+
+ switch (tone) {
+ case SEC_TONE_OFF:
+ return tda8083_writereg (state, 0x29, 0x00);
+ case SEC_TONE_ON:
+ return tda8083_writereg (state, 0x29, 0x80);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int tda8083_set_voltage (struct tda8083_state* state, fe_sec_voltage_t voltage)
+{
+ switch (voltage) {
+ case SEC_VOLTAGE_13:
+ return tda8083_writereg (state, 0x20, 0x00);
+ case SEC_VOLTAGE_18:
+ return tda8083_writereg (state, 0x20, 0x11);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int tda8083_send_diseqc_burst (struct tda8083_state* state, fe_sec_mini_cmd_t burst)
+{
+ switch (burst) {
+ case SEC_MINI_A:
+ tda8083_writereg (state, 0x29, (5 << 2)); /* send burst A */
+ break;
+ case SEC_MINI_B:
+ tda8083_writereg (state, 0x29, (7 << 2)); /* send B */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ tda8083_wait_diseqc_fifo (state, 100);
+
+ return 0;
+}
+
+static int tda8083_send_diseqc_msg (struct dvb_frontend* fe,
+ struct dvb_diseqc_master_cmd *m)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+ int i;
+
+ tda8083_writereg (state, 0x29, (m->msg_len - 3) | (1 << 2)); /* enable */
+
+ for (i=0; i<m->msg_len; i++)
+ tda8083_writereg (state, 0x23 + i, m->msg[i]);
+
+ tda8083_writereg (state, 0x29, (m->msg_len - 3) | (3 << 2)); /* send!! */
+
+ tda8083_wait_diseqc_fifo (state, 100);
+
+ return 0;
+}
+
+static int tda8083_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ u8 signal = ~tda8083_readreg (state, 0x01);
+ u8 sync = tda8083_readreg (state, 0x02);
+
+ *status = 0;
+
+ if (signal > 10)
+ *status |= FE_HAS_SIGNAL;
+
+ if (sync & 0x01)
+ *status |= FE_HAS_CARRIER;
+
+ if (sync & 0x02)
+ *status |= FE_HAS_VITERBI;
+
+ if (sync & 0x10)
+ *status |= FE_HAS_SYNC;
+
+ if (sync & 0x20) /* frontend can not lock */
+ *status |= FE_TIMEDOUT;
+
+ if ((sync & 0x1f) == 0x1f)
+ *status |= FE_HAS_LOCK;
+
+ return 0;
+}
+
+static int tda8083_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+ int ret;
+ u8 buf[3];
+
+ if ((ret = tda8083_readregs(state, 0x0b, buf, sizeof(buf))))
+ return ret;
+
+ *ber = ((buf[0] & 0x1f) << 16) | (buf[1] << 8) | buf[2];
+
+ return 0;
+}
+
+static int tda8083_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ u8 signal = ~tda8083_readreg (state, 0x01);
+ *strength = (signal << 8) | signal;
+
+ return 0;
+}
+
+static int tda8083_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ u8 _snr = tda8083_readreg (state, 0x08);
+ *snr = (_snr << 8) | _snr;
+
+ return 0;
+}
+
+static int tda8083_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ *ucblocks = tda8083_readreg(state, 0x0f);
+ if (*ucblocks == 0xff)
+ *ucblocks = 0xffffffff;
+
+ return 0;
+}
+
+static int tda8083_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe);
+ if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+
+ tda8083_set_inversion (state, p->inversion);
+ tda8083_set_fec(state, p->fec_inner);
+ tda8083_set_symbolrate(state, p->symbol_rate);
+
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 0;
+}
+
+static int tda8083_get_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ /* FIXME: get symbolrate & frequency offset...*/
+ /*p->frequency = ???;*/
+ p->inversion = (tda8083_readreg (state, 0x0e) & 0x80) ?
+ INVERSION_ON : INVERSION_OFF;
+ p->fec_inner = tda8083_get_fec(state);
+ /*p->symbol_rate = tda8083_get_symbolrate (state);*/
+
+ return 0;
+}
+
+static int tda8083_sleep(struct dvb_frontend* fe)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ tda8083_writereg (state, 0x00, 0x02);
+ return 0;
+}
+
+static int tda8083_init(struct dvb_frontend* fe)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+ int i;
+
+ for (i=0; i<44; i++)
+ tda8083_writereg (state, i, tda8083_init_tab[i]);
+
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 0;
+}
+
+static int tda8083_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ tda8083_send_diseqc_burst (state, burst);
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 0;
+}
+
+static int tda8083_diseqc_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ tda8083_set_tone (state, tone);
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 0;
+}
+
+static int tda8083_diseqc_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+
+ tda8083_set_voltage (state, voltage);
+ tda8083_writereg (state, 0x00, 0x3c);
+ tda8083_writereg (state, 0x00, 0x04);
+
+ return 0;
+}
+
+static void tda8083_release(struct dvb_frontend* fe)
+{
+ struct tda8083_state* state = fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops tda8083_ops;
+
+struct dvb_frontend* tda8083_attach(const struct tda8083_config* config,
+ struct i2c_adapter* i2c)
+{
+ struct tda8083_state* state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct tda8083_state), GFP_KERNEL);
+ if (state == NULL) goto error;
+
+ /* setup the state */
+ state->config = config;
+ state->i2c = i2c;
+
+ /* check if the demod is there */
+ if ((tda8083_readreg(state, 0x00)) != 0x05) goto error;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &tda8083_ops, sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+
+error:
+ kfree(state);
+ return NULL;
+}
+
+static struct dvb_frontend_ops tda8083_ops = {
+ .delsys = { SYS_DVBS },
+ .info = {
+ .name = "Philips TDA8083 DVB-S",
+ .frequency_min = 920000, /* TDA8060 */
+ .frequency_max = 2200000, /* TDA8060 */
+ .frequency_stepsize = 125, /* kHz for QPSK frontends */
+ /* .frequency_tolerance = ???,*/
+ .symbol_rate_min = 12000000,
+ .symbol_rate_max = 30000000,
+ /* .symbol_rate_tolerance = ???,*/
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
+ FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
+ FE_CAN_QPSK | FE_CAN_MUTE_TS
+ },
+
+ .release = tda8083_release,
+
+ .init = tda8083_init,
+ .sleep = tda8083_sleep,
+
+ .set_frontend = tda8083_set_frontend,
+ .get_frontend = tda8083_get_frontend,
+
+ .read_status = tda8083_read_status,
+ .read_signal_strength = tda8083_read_signal_strength,
+ .read_snr = tda8083_read_snr,
+ .read_ber = tda8083_read_ber,
+ .read_ucblocks = tda8083_read_ucblocks,
+
+ .diseqc_send_master_cmd = tda8083_send_diseqc_msg,
+ .diseqc_send_burst = tda8083_diseqc_send_burst,
+ .set_tone = tda8083_diseqc_set_tone,
+ .set_voltage = tda8083_diseqc_set_voltage,
+};
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("Philips TDA8083 DVB-S Demodulator");
+MODULE_AUTHOR("Ralph Metzler, Holger Waechtler");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(tda8083_attach);
Code Review / kvmfornfv.git / blobdiff