#define XTAL 10111000
static int force_band;
+module_param(force_band, int, 0644);
+MODULE_PARM_DESC(force_band, "Force a specific band select "\
+ "(1-9, default:off).");
+
static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
#define info(args...) do { printk(KERN_INFO "CX24123: " args); } while (0)
#define err(args...) do { printk(KERN_ERR "CX24123: " args); } while (0)
} \
} while (0)
-struct cx24123_state
-{
- struct i2c_adapter* i2c;
- const struct cx24123_config* config;
+struct cx24123_state {
+ struct i2c_adapter *i2c;
+ const struct cx24123_config *config;
struct dvb_frontend frontend;
};
/* Various tuner defaults need to be established for a given symbol rate Sps */
-static struct
-{
+static struct cx24123_AGC_val {
u32 symbolrate_low;
u32 symbolrate_high;
u32 VCAprogdata;
* fixme: The bounds on the bands do not match the doc in real life.
* fixme: Some of them have been moved, other might need adjustment.
*/
-static struct
-{
+static struct cx24123_bandselect_val {
u32 freq_low;
u32 freq_high;
u32 VCOdivider;
/* printk(KERN_DEBUG "wr(%02x): %02x %02x\n", i2c_addr, reg, data); */
- if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
+ err = i2c_transfer(state->i2c, &msg, 1);
+ if (err != 1) {
printk("%s: writereg error(err == %i, reg == 0x%02x,"
" data == 0x%02x)\n", __func__, err, reg, data);
return err;
#define cx24123_writereg(state, reg, val) \
cx24123_i2c_writereg(state, state->config->demod_address, reg, val)
-static int cx24123_set_inversion(struct cx24123_state* state, fe_spectral_inversion_t inversion)
+static int cx24123_set_inversion(struct cx24123_state *state,
+ fe_spectral_inversion_t inversion)
{
u8 nom_reg = cx24123_readreg(state, 0x0e);
u8 auto_reg = cx24123_readreg(state, 0x10);
return 0;
}
-static int cx24123_get_inversion(struct cx24123_state* state, fe_spectral_inversion_t *inversion)
+static int cx24123_get_inversion(struct cx24123_state *state,
+ fe_spectral_inversion_t *inversion)
{
u8 val;
return 0;
}
-static int cx24123_set_fec(struct cx24123_state* state, fe_code_rate_t fec)
+static int cx24123_set_fec(struct cx24123_state *state, fe_code_rate_t fec)
{
u8 nom_reg = cx24123_readreg(state, 0x0e) & ~0x07;
- if ( (fec < FEC_NONE) || (fec > FEC_AUTO) )
+ if ((fec < FEC_NONE) || (fec > FEC_AUTO))
fec = FEC_AUTO;
/* Set the soft decision threshold */
- if(fec == FEC_1_2)
- cx24123_writereg(state, 0x43, cx24123_readreg(state, 0x43) | 0x01);
+ if (fec == FEC_1_2)
+ cx24123_writereg(state, 0x43,
+ cx24123_readreg(state, 0x43) | 0x01);
else
- cx24123_writereg(state, 0x43, cx24123_readreg(state, 0x43) & ~0x01);
+ cx24123_writereg(state, 0x43,
+ cx24123_readreg(state, 0x43) & ~0x01);
switch (fec) {
case FEC_1_2:
return 0;
}
-static int cx24123_get_fec(struct cx24123_state* state, fe_code_rate_t *fec)
+static int cx24123_get_fec(struct cx24123_state *state, fe_code_rate_t *fec)
{
int ret;
- ret = cx24123_readreg (state, 0x1b);
+ ret = cx24123_readreg(state, 0x1b);
if (ret < 0)
return ret;
ret = ret & 0x07;
{
u32 exp, nearest = 0;
u32 div = a / b;
- if(a % b >= b / 2) ++div;
- if(div < (1 << 31))
- {
- for(exp = 1; div > exp; nearest++)
+ if (a % b >= b / 2)
+ ++div;
+ if (div < (1 << 31)) {
+ for (exp = 1; div > exp; nearest++)
exp += exp;
}
return nearest;
}
-static int cx24123_set_symbolrate(struct cx24123_state* state, u32 srate)
+static int cx24123_set_symbolrate(struct cx24123_state *state, u32 srate)
{
u32 tmp, sample_rate, ratio, sample_gain;
u8 pll_mult;
cx24123_writereg(state, 0x01, pll_mult * 6);
- cx24123_writereg(state, 0x08, (ratio >> 16) & 0x3f );
- cx24123_writereg(state, 0x09, (ratio >> 8) & 0xff );
- cx24123_writereg(state, 0x0a, (ratio ) & 0xff );
+ cx24123_writereg(state, 0x08, (ratio >> 16) & 0x3f);
+ cx24123_writereg(state, 0x09, (ratio >> 8) & 0xff);
+ cx24123_writereg(state, 0x0a, ratio & 0xff);
/* also set the demodulator sample gain */
sample_gain = cx24123_int_log2(sample_rate, srate);
}
/*
- * Based on the required frequency and symbolrate, the tuner AGC has to be configured
- * and the correct band selected. Calculate those values
+ * Based on the required frequency and symbolrate, the tuner AGC has
+ * to be configured and the correct band selected.
+ * Calculate those values.
*/
-static int cx24123_pll_calculate(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+static int cx24123_pll_calculate(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
{
struct cx24123_state *state = fe->demodulator_priv;
u32 ndiv = 0, adiv = 0, vco_div = 0;
int pump = 2;
int band = 0;
int num_bands = ARRAY_SIZE(cx24123_bandselect_vals);
+ struct cx24123_bandselect_val *bsv = NULL;
+ struct cx24123_AGC_val *agcv = NULL;
/* Defaults for low freq, low rate */
state->VCAarg = cx24123_AGC_vals[0].VCAprogdata;
state->bandselectarg = cx24123_bandselect_vals[0].progdata;
vco_div = cx24123_bandselect_vals[0].VCOdivider;
- /* For the given symbol rate, determine the VCA, VGA and FILTUNE programming bits */
- for (i = 0; i < ARRAY_SIZE(cx24123_AGC_vals); i++)
- {
- if ((cx24123_AGC_vals[i].symbolrate_low <= p->u.qpsk.symbol_rate) &&
- (cx24123_AGC_vals[i].symbolrate_high >= p->u.qpsk.symbol_rate) ) {
- state->VCAarg = cx24123_AGC_vals[i].VCAprogdata;
- state->VGAarg = cx24123_AGC_vals[i].VGAprogdata;
- state->FILTune = cx24123_AGC_vals[i].FILTune;
+ /* For the given symbol rate, determine the VCA, VGA and
+ * FILTUNE programming bits */
+ for (i = 0; i < ARRAY_SIZE(cx24123_AGC_vals); i++) {
+ agcv = &cx24123_AGC_vals[i];
+ if ((agcv->symbolrate_low <= p->u.qpsk.symbol_rate) &&
+ (agcv->symbolrate_high >= p->u.qpsk.symbol_rate)) {
+ state->VCAarg = agcv->VCAprogdata;
+ state->VGAarg = agcv->VGAprogdata;
+ state->FILTune = agcv->FILTune;
}
}
/* determine the band to use */
- if(force_band < 1 || force_band > num_bands)
- {
- for (i = 0; i < num_bands; i++)
- {
- if ((cx24123_bandselect_vals[i].freq_low <= p->frequency) &&
- (cx24123_bandselect_vals[i].freq_high >= p->frequency) )
+ if (force_band < 1 || force_band > num_bands) {
+ for (i = 0; i < num_bands; i++) {
+ bsv = &cx24123_bandselect_vals[i];
+ if ((bsv->freq_low <= p->frequency) &&
+ (bsv->freq_high >= p->frequency))
band = i;
}
- }
- else
+ } else
band = force_band - 1;
state->bandselectarg = cx24123_bandselect_vals[band].progdata;
vco_div = cx24123_bandselect_vals[band].VCOdivider;
/* determine the charge pump current */
- if ( p->frequency < (cx24123_bandselect_vals[band].freq_low + cx24123_bandselect_vals[band].freq_high)/2 )
+ if (p->frequency < (cx24123_bandselect_vals[band].freq_low +
+ cx24123_bandselect_vals[band].freq_high) / 2)
pump = 0x01;
else
pump = 0x02;
/* Determine the N/A dividers for the requested lband freq (in kHz). */
- /* Note: the reference divider R=10, frequency is in KHz, XTAL is in Hz */
- ndiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) / 32) & 0x1ff;
- adiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) % 32) & 0x1f;
+ /* Note: the reference divider R=10, frequency is in KHz,
+ * XTAL is in Hz */
+ ndiv = (((p->frequency * vco_div * 10) /
+ (2 * XTAL / 1000)) / 32) & 0x1ff;
+ adiv = (((p->frequency * vco_div * 10) /
+ (2 * XTAL / 1000)) % 32) & 0x1f;
if (adiv == 0 && ndiv > 0)
ndiv--;
- /* control bits 11, refdiv 11, charge pump polarity 1, charge pump current, ndiv, adiv */
- state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) | (pump << 14) | (ndiv << 5) | adiv;
+ /* control bits 11, refdiv 11, charge pump polarity 1,
+ * charge pump current, ndiv, adiv */
+ state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) |
+ (pump << 14) | (ndiv << 5) | adiv;
return 0;
}
/*
* Tuner data is 21 bits long, must be left-aligned in data.
- * Tuner cx24109 is written through a dedicated 3wire interface on the demod chip.
+ * Tuner cx24109 is written through a dedicated 3wire interface
+ * on the demod chip.
*/
-static int cx24123_pll_writereg(struct dvb_frontend* fe, struct dvb_frontend_parameters *p, u32 data)
+static int cx24123_pll_writereg(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p, u32 data)
{
struct cx24123_state *state = fe->demodulator_priv;
unsigned long timeout;
/* send another 8 bytes, wait for the send to be completed */
timeout = jiffies + msecs_to_jiffies(40);
- cx24123_writereg(state, 0x22, (data>>8) & 0xff );
+ cx24123_writereg(state, 0x22, (data >> 8) & 0xff);
while ((cx24123_readreg(state, 0x20) & 0x40) == 0) {
if (time_after(jiffies, timeout)) {
err("%s: demodulator is not responding, "\
msleep(10);
}
- /* send the lower 5 bits of this byte, padded with 3 LBB, wait for the send to be completed */
+ /* send the lower 5 bits of this byte, padded with 3 LBB,
+ * wait for the send to be completed */
timeout = jiffies + msecs_to_jiffies(40);
- cx24123_writereg(state, 0x22, (data) & 0xff );
+ cx24123_writereg(state, 0x22, (data) & 0xff);
while ((cx24123_readreg(state, 0x20) & 0x80)) {
if (time_after(jiffies, timeout)) {
err("%s: demodulator is not responding," \
return 0;
}
-static int cx24123_pll_tune(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+static int cx24123_pll_tune(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
{
struct cx24123_state *state = fe->demodulator_priv;
u8 val;
return cx24123_writereg(state, 0x23, r);
}
-static int cx24123_initfe(struct dvb_frontend* fe)
+static int cx24123_initfe(struct dvb_frontend *fe)
{
struct cx24123_state *state = fe->demodulator_priv;
int i;
/* Configure the demod to a good set of defaults */
for (i = 0; i < ARRAY_SIZE(cx24123_regdata); i++)
- cx24123_writereg(state, cx24123_regdata[i].reg, cx24123_regdata[i].data);
+ cx24123_writereg(state, cx24123_regdata[i].reg,
+ cx24123_regdata[i].data);
/* Set the LNB polarity */
- if(state->config->lnb_polarity)
- cx24123_writereg(state, 0x32, cx24123_readreg(state, 0x32) | 0x02);
+ if (state->config->lnb_polarity)
+ cx24123_writereg(state, 0x32,
+ cx24123_readreg(state, 0x32) | 0x02);
if (state->config->dont_use_pll)
- cx24123_repeater_mode(state, 1, 0);
+ cx24123_repeater_mode(state, 1, 0);
return 0;
}
-static int cx24123_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+static int cx24123_set_voltage(struct dvb_frontend *fe,
+ fe_sec_voltage_t voltage)
{
struct cx24123_state *state = fe->demodulator_priv;
u8 val;
{
unsigned long timeout = jiffies + msecs_to_jiffies(200);
while (!(cx24123_readreg(state, 0x29) & 0x40)) {
- if(time_after(jiffies, timeout)) {
+ if (time_after(jiffies, timeout)) {
err("%s: diseqc queue not ready, " \
"command may be lost.\n", __func__);
break;
}
}
-static int cx24123_send_diseqc_msg(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd)
+static int cx24123_send_diseqc_msg(struct dvb_frontend *fe,
+ struct dvb_diseqc_master_cmd *cmd)
{
struct cx24123_state *state = fe->demodulator_priv;
int i, val, tone;
cx24123_writereg(state, 0x2C + i, cmd->msg[i]);
val = cx24123_readreg(state, 0x29);
- cx24123_writereg(state, 0x29, ((val & 0x90) | 0x40) | ((cmd->msg_len-3) & 3));
+ cx24123_writereg(state, 0x29, ((val & 0x90) | 0x40) |
+ ((cmd->msg_len-3) & 3));
/* wait for diseqc message to finish sending */
cx24123_wait_for_diseqc(state);
/* restart continuous tone if enabled */
- if (tone & 0x10) {
+ if (tone & 0x10)
cx24123_writereg(state, 0x29, tone & ~0x40);
- }
return 0;
}
-static int cx24123_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
+static int cx24123_diseqc_send_burst(struct dvb_frontend *fe,
+ fe_sec_mini_cmd_t burst)
{
struct cx24123_state *state = fe->demodulator_priv;
int val, tone;
cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) & 0xfb);
/* restart continuous tone if enabled */
- if (tone & 0x10) {
+ if (tone & 0x10)
cx24123_writereg(state, 0x29, tone & ~0x40);
- }
+
return 0;
}
-static int cx24123_read_status(struct dvb_frontend* fe, fe_status_t* status)
+static int cx24123_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct cx24123_state *state = fe->demodulator_priv;
int sync = cx24123_readreg(state, 0x14);
}
/*
- * Configured to return the measurement of errors in blocks, because no UCBLOCKS value
- * is available, so this value doubles up to satisfy both measurements
+ * Configured to return the measurement of errors in blocks,
+ * because no UCBLOCKS value is available, so this value doubles up
+ * to satisfy both measurements.
*/
static int cx24123_read_ber(struct dvb_frontend *fe, u32 *ber)
{
{
struct cx24123_state *state = fe->demodulator_priv;
- *signal_strength = cx24123_readreg(state, 0x3b) << 8; /* larger = better */
+ /* larger = better */
+ *signal_strength = cx24123_readreg(state, 0x3b) << 8;
dprintk("Signal strength = %d\n", *signal_strength);
if (state->config->set_ts_params)
state->config->set_ts_params(fe, 0);
- state->currentfreq=p->frequency;
+ state->currentfreq = p->frequency;
state->currentsymbolrate = p->u.qpsk.symbol_rate;
cx24123_set_inversion(state, p->inversion);
return 0;
}
-static int cx24123_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+static int cx24123_get_frontend(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
{
struct cx24123_state *state = fe->demodulator_priv;
return 0;
}
-static int cx24123_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+static int cx24123_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
{
struct cx24123_state *state = fe->demodulator_priv;
u8 val;
return 0;
}
-static int cx24123_tune(struct dvb_frontend* fe,
- struct dvb_frontend_parameters* params,
+static int cx24123_tune(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params,
unsigned int mode_flags,
unsigned int *delay,
fe_status_t *status)
static int cx24123_get_algo(struct dvb_frontend *fe)
{
- return 1; //FE_ALGO_HW
+ return 1; /* FE_ALGO_HW */
}
-static void cx24123_release(struct dvb_frontend* fe)
+static void cx24123_release(struct dvb_frontend *fe)
{
- struct cx24123_state* state = fe->demodulator_priv;
+ struct cx24123_state *state = fe->demodulator_priv;
dprintk("\n");
i2c_del_adapter(&state->tuner_i2c_adapter);
kfree(state);
{
struct cx24123_state *state = i2c_get_adapdata(i2c_adap);
/* this repeater closes after the first stop */
- cx24123_repeater_mode(state, 1, 1);
+ cx24123_repeater_mode(state, 1, 1);
return i2c_transfer(state->i2c, msg, num);
}
static struct dvb_frontend_ops cx24123_ops;
-struct dvb_frontend* cx24123_attach(const struct cx24123_config* config,
- struct i2c_adapter* i2c)
+struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
+ struct i2c_adapter *i2c)
{
struct cx24123_state *state =
kzalloc(sizeof(struct cx24123_state), GFP_KERNEL);
/* check if the demod is there */
state->demod_rev = cx24123_readreg(state, 0x00);
switch (state->demod_rev) {
- case 0xe1: info("detected CX24123C\n"); break;
- case 0xd1: info("detected CX24123\n"); break;
+ case 0xe1:
+ info("detected CX24123C\n");
+ break;
+ case 0xd1:
+ info("detected CX24123\n");
+ break;
default:
err("wrong demod revision: %x\n", state->demod_rev);
goto error;
}
/* create dvb_frontend */
- memcpy(&state->frontend.ops, &cx24123_ops, sizeof(struct dvb_frontend_ops));
+ memcpy(&state->frontend.ops, &cx24123_ops,
+ sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
- /* create tuner i2c adapter */
- if (config->dont_use_pll)
- cx24123_repeater_mode(state, 1, 0);
+ /* create tuner i2c adapter */
+ if (config->dont_use_pll)
+ cx24123_repeater_mode(state, 1, 0);
strlcpy(state->tuner_i2c_adapter.name, "CX24123 tuner I2C bus",
sizeof(state->tuner_i2c_adapter.name));
state->tuner_i2c_adapter.algo_data = NULL;
i2c_set_adapdata(&state->tuner_i2c_adapter, state);
if (i2c_add_adapter(&state->tuner_i2c_adapter) < 0) {
- err("tuner i2c bus could not be initialized\n");
+ err("tuner i2c bus could not be initialized\n");
goto error;
}
return NULL;
}
+EXPORT_SYMBOL(cx24123_attach);
static struct dvb_frontend_ops cx24123_ops = {
.get_frontend_algo = cx24123_get_algo,
};
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
-
-module_param(force_band, int, 0644);
-MODULE_PARM_DESC(force_band, "Force a specific band select (1-9, default:off).");
-
MODULE_DESCRIPTION("DVB Frontend module for Conexant " \
"CX24123/CX24109/CX24113 hardware");
MODULE_AUTHOR("Steven Toth");
MODULE_LICENSE("GPL");
-EXPORT_SYMBOL(cx24123_attach);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff