/*
driver for LSI L64781 COFDM demodulator
- Copyright (C) 2001 Holger Waechtler <holger@convergence.de>
- for Convergence Integrated Media GmbH
- Marko Kohtala <marko.kohtala@nokia.com>
+ Copyright (C) 2001 Holger Waechtler for Convergence Integrated Media GmbH
+ Marko Kohtala <marko.kohtala@luukku.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
struct l64781_state {
-
struct i2c_adapter* i2c;
-
struct dvb_frontend_ops ops;
-
const struct l64781_config* config;
-
struct dvb_frontend frontend;
/* private demodulator data */
- int first:1;
+ int first:1;
};
#define dprintk(args...) \
static int apply_frontend_param (struct dvb_frontend* fe, struct dvb_frontend_parameters *param)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
/* The coderates for FEC_NONE, FEC_4_5 and FEC_FEC_6_7 are arbitrary */
static const u8 fec_tab[] = { 7, 0, 1, 2, 9, 3, 10, 4 };
/* QPSK, QAM_16, QAM_64 */
static int get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters* param)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
int tmp;
static int l64781_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
int sync = l64781_readreg (state, 0x32);
int gain = l64781_readreg (state, 0x0e);
static int l64781_read_ber(struct dvb_frontend* fe, u32* ber)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
/* XXX FIXME: set up counting period (reg 0x26...0x28)
*/
static int l64781_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
u8 gain = l64781_readreg (state, 0x0e);
*signal_strength = (gain << 8) | gain;
static int l64781_read_snr(struct dvb_frontend* fe, u16* snr)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
u8 avg_quality = 0xff - l64781_readreg (state, 0x33);
*snr = (avg_quality << 8) | avg_quality; /* not exact, but...*/
static int l64781_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
*ucblocks = l64781_readreg (state, 0x37)
| (l64781_readreg (state, 0x38) << 8);
static int l64781_sleep(struct dvb_frontend* fe)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
/* Power down */
return l64781_writereg (state, 0x3e, 0x5a);
static int l64781_init(struct dvb_frontend* fe)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
- reset_and_configure (state);
+ reset_and_configure (state);
/* Power up */
l64781_writereg (state, 0x3e, 0xa5);
l64781_writereg (state, 0x0d, 0x8c);
/* With ppm=8000, it seems the DTR_SENSITIVITY will result in
- value of 2 with all possible bandwidths and guard
- intervals, which is the initial value anyway. */
- /*l64781_writereg (state, 0x19, 0x92);*/
+ value of 2 with all possible bandwidths and guard
+ intervals, which is the initial value anyway. */
+ /*l64781_writereg (state, 0x19, 0x92);*/
/* Everything is two's complement, soft bit and CSI_OUT too */
l64781_writereg (state, 0x1e, 0x09);
return 0;
}
-static int l64781_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+static int l64781_get_tune_settings(struct dvb_frontend* fe,
+ struct dvb_frontend_tune_settings* fesettings)
{
- fesettings->min_delay_ms = 200;
- fesettings->step_size = 166667;
- fesettings->max_drift = 166667*2;
- return 0;
+ fesettings->min_delay_ms = 4000;
+ fesettings->step_size = 0;
+ fesettings->max_drift = 0;
+ return 0;
}
static void l64781_release(struct dvb_frontend* fe)
{
- struct l64781_state* state = (struct l64781_state*) fe->demodulator_priv;
+ struct l64781_state* state = fe->demodulator_priv;
kfree(state);
}
{ .addr = config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
/* allocate memory for the internal state */
- state = (struct l64781_state*) kmalloc(sizeof(struct l64781_state), GFP_KERNEL);
+ state = kmalloc(sizeof(struct l64781_state), GFP_KERNEL);
if (state == NULL) goto error;
/* setup the state */
/* The chip always responds to reads */
if (i2c_transfer(state->i2c, msg, 2) != 2) {
- dprintk("No response to read on I2C bus\n");
+ dprintk("No response to read on I2C bus\n");
goto error;
}
/* Reading the POWER_DOWN register always returns 0 */
if (reg0x3e != 0) {
- dprintk("Device doesn't look like L64781\n");
+ dprintk("Device doesn't look like L64781\n");
goto error;
}
/* Responds to all reads with 0 */
if (l64781_readreg(state, 0x1a) != 0) {
- dprintk("Read 1 returned unexpcted value\n");
+ dprintk("Read 1 returned unexpcted value\n");
goto error;
}
/* Responds with register default value */
if (l64781_readreg(state, 0x1a) != 0xa1) {
- dprintk("Read 2 returned unexpcted value\n");
+ dprintk("Read 2 returned unexpcted value\n");
goto error;
}
return &state->frontend;
error:
- if (reg0x3e >= 0) l64781_writereg (state, 0x3e, reg0x3e); /* restore reg 0x3e */
- if (state) kfree(state);
+ if (reg0x3e >= 0)
+ l64781_writereg (state, 0x3e, reg0x3e); /* restore reg 0x3e */
+ kfree(state);
return NULL;
}
.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_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
- FE_CAN_MUTE_TS
+ FE_CAN_MUTE_TS
},
- .release = l64781_release,
+ .release = l64781_release,
.init = l64781_init,
.sleep = l64781_sleep,