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V4L/DVB (9260): cx24123: Checkpatch compliance 

cx24123: Checkpatch compliance

Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2008-10-16 20:28:32 -03:00 коммит произвёл Mauro Carvalho Chehab
Родитель b431c61642
Коммит 93504abfeb
2 изменённых файлов: 133 добавлений и 105 удалений
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166
drivers/media/dvb/frontends/cx24123.c
Просмотреть файл

@ -33,7 +33,13 @@
#define XTAL 10111000 #define XTAL 10111000
static int force_band; 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; 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 info(args...) do { printk(KERN_INFO "CX24123: " args); } while (0)
#define err(args...) do { printk(KERN_ERR "CX24123: " args); } while (0) #define err(args...) do { printk(KERN_ERR "CX24123: " args); } while (0)
@ -46,8 +52,7 @@ static int debug;
} \ } \
} while (0) } while (0)
struct cx24123_state struct cx24123_state {
{
struct i2c_adapter *i2c; struct i2c_adapter *i2c;
const struct cx24123_config *config; const struct cx24123_config *config;
@ -70,8 +75,7 @@ struct cx24123_state
}; };
/* Various tuner defaults need to be established for a given symbol rate Sps */ /* 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_low;
u32 symbolrate_high; u32 symbolrate_high;
u32 VCAprogdata; u32 VCAprogdata;
@ -109,8 +113,7 @@ static struct
* fixme: The bounds on the bands do not match the doc in real life. * 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. * fixme: Some of them have been moved, other might need adjustment.
*/ */
static struct static struct cx24123_bandselect_val {
{
u32 freq_low; u32 freq_low;
u32 freq_high; u32 freq_high;
u32 VCOdivider; u32 VCOdivider;
@ -249,7 +252,8 @@ static int cx24123_i2c_writereg(struct cx24123_state *state,
/* printk(KERN_DEBUG "wr(%02x): %02x %02x\n", i2c_addr, reg, data); */ /* 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," printk("%s: writereg error(err == %i, reg == 0x%02x,"
" data == 0x%02x)\n", __func__, err, reg, data); " data == 0x%02x)\n", __func__, err, reg, data);
return err; return err;
@ -284,7 +288,8 @@ static int cx24123_i2c_readreg(struct cx24123_state *state, u8 i2c_addr, u8 reg)
#define cx24123_writereg(state, reg, val) \ #define cx24123_writereg(state, reg, val) \
cx24123_i2c_writereg(state, state->config->demod_address, 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 nom_reg = cx24123_readreg(state, 0x0e);
u8 auto_reg = cx24123_readreg(state, 0x10); u8 auto_reg = cx24123_readreg(state, 0x10);
@ -311,7 +316,8 @@ static int cx24123_set_inversion(struct cx24123_state* state, fe_spectral_invers
return 0; 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; u8 val;
@ -337,9 +343,11 @@ static int cx24123_set_fec(struct cx24123_state* state, fe_code_rate_t fec)
/* Set the soft decision threshold */ /* Set the soft decision threshold */
if (fec == FEC_1_2) if (fec == FEC_1_2)
cx24123_writereg(state, 0x43, cx24123_readreg(state, 0x43) | 0x01); cx24123_writereg(state, 0x43,
cx24123_readreg(state, 0x43) | 0x01);
else else
cx24123_writereg(state, 0x43, cx24123_readreg(state, 0x43) & ~0x01); cx24123_writereg(state, 0x43,
cx24123_readreg(state, 0x43) & ~0x01);
switch (fec) { switch (fec) {
case FEC_1_2: case FEC_1_2:
@ -433,9 +441,9 @@ static u32 cx24123_int_log2(u32 a, u32 b)
{ {
u32 exp, nearest = 0; u32 exp, nearest = 0;
u32 div = a / b; u32 div = a / b;
if(a % b >= b / 2) ++div; if (a % b >= b / 2)
if(div < (1 << 31)) ++div;
{ if (div < (1 << 31)) {
for (exp = 1; div > exp; nearest++) for (exp = 1; div > exp; nearest++)
exp += exp; exp += exp;
} }
@ -500,7 +508,7 @@ static int cx24123_set_symbolrate(struct cx24123_state* state, u32 srate)
cx24123_writereg(state, 0x08, (ratio >> 16) & 0x3f); cx24123_writereg(state, 0x08, (ratio >> 16) & 0x3f);
cx24123_writereg(state, 0x09, (ratio >> 8) & 0xff); cx24123_writereg(state, 0x09, (ratio >> 8) & 0xff);
cx24123_writereg(state, 0x0a, (ratio ) & 0xff ); cx24123_writereg(state, 0x0a, ratio & 0xff);
/* also set the demodulator sample gain */ /* also set the demodulator sample gain */
sample_gain = cx24123_int_log2(sample_rate, srate); sample_gain = cx24123_int_log2(sample_rate, srate);
@ -514,10 +522,12 @@ static int cx24123_set_symbolrate(struct cx24123_state* state, u32 srate)
} }
/* /*
* Based on the required frequency and symbolrate, the tuner AGC has to be configured * Based on the required frequency and symbolrate, the tuner AGC has
* and the correct band selected. Calculate those values * 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; struct cx24123_state *state = fe->demodulator_priv;
u32 ndiv = 0, adiv = 0, vco_div = 0; u32 ndiv = 0, adiv = 0, vco_div = 0;
@ -525,6 +535,8 @@ static int cx24123_pll_calculate(struct dvb_frontend* fe, struct dvb_frontend_pa
int pump = 2; int pump = 2;
int band = 0; int band = 0;
int num_bands = ARRAY_SIZE(cx24123_bandselect_vals); 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 */ /* Defaults for low freq, low rate */
state->VCAarg = cx24123_AGC_vals[0].VCAprogdata; state->VCAarg = cx24123_AGC_vals[0].VCAprogdata;
@ -532,58 +544,65 @@ static int cx24123_pll_calculate(struct dvb_frontend* fe, struct dvb_frontend_pa
state->bandselectarg = cx24123_bandselect_vals[0].progdata; state->bandselectarg = cx24123_bandselect_vals[0].progdata;
vco_div = cx24123_bandselect_vals[0].VCOdivider; vco_div = cx24123_bandselect_vals[0].VCOdivider;
/* For the given symbol rate, determine the VCA, VGA and FILTUNE programming bits */ /* For the given symbol rate, determine the VCA, VGA and
for (i = 0; i < ARRAY_SIZE(cx24123_AGC_vals); i++) * 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) && agcv = &cx24123_AGC_vals[i];
(cx24123_AGC_vals[i].symbolrate_high >= p->u.qpsk.symbol_rate) ) { if ((agcv->symbolrate_low <= p->u.qpsk.symbol_rate) &&
state->VCAarg = cx24123_AGC_vals[i].VCAprogdata; (agcv->symbolrate_high >= p->u.qpsk.symbol_rate)) {
state->VGAarg = cx24123_AGC_vals[i].VGAprogdata; state->VCAarg = agcv->VCAprogdata;
state->FILTune = cx24123_AGC_vals[i].FILTune; state->VGAarg = agcv->VGAprogdata;
state->FILTune = agcv->FILTune;
} }
} }
/* determine the band to use */ /* determine the band to use */
if(force_band < 1 || force_band > num_bands) if (force_band < 1 || force_band > num_bands) {
{ for (i = 0; i < num_bands; i++) {
for (i = 0; i < num_bands; i++) bsv = &cx24123_bandselect_vals[i];
{ if ((bsv->freq_low <= p->frequency) &&
if ((cx24123_bandselect_vals[i].freq_low <= p->frequency) && (bsv->freq_high >= p->frequency))
(cx24123_bandselect_vals[i].freq_high >= p->frequency) )
band = i; band = i;
} }
} } else
else
band = force_band - 1; band = force_band - 1;
state->bandselectarg = cx24123_bandselect_vals[band].progdata; state->bandselectarg = cx24123_bandselect_vals[band].progdata;
vco_div = cx24123_bandselect_vals[band].VCOdivider; vco_div = cx24123_bandselect_vals[band].VCOdivider;
/* determine the charge pump current */ /* 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; pump = 0x01;
else else
pump = 0x02; pump = 0x02;
/* Determine the N/A dividers for the requested lband freq (in kHz). */ /* 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 */ /* Note: the reference divider R=10, frequency is in KHz,
ndiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) / 32) & 0x1ff; * XTAL is in Hz */
adiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) % 32) & 0x1f; 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) if (adiv == 0 && ndiv > 0)
ndiv--; ndiv--;
/* control bits 11, refdiv 11, charge pump polarity 1, charge pump current, ndiv, adiv */ /* control bits 11, refdiv 11, charge pump polarity 1,
state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) | (pump << 14) | (ndiv << 5) | adiv; * charge pump current, ndiv, adiv */
state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) |
(pump << 14) | (ndiv << 5) | adiv;
return 0; return 0;
} }
/* /*
* Tuner data is 21 bits long, must be left-aligned in data. * 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; struct cx24123_state *state = fe->demodulator_priv;
unsigned long timeout; unsigned long timeout;
@ -620,7 +639,8 @@ static int cx24123_pll_writereg(struct dvb_frontend* fe, struct dvb_frontend_par
msleep(10); 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); timeout = jiffies + msecs_to_jiffies(40);
cx24123_writereg(state, 0x22, (data) & 0xff); cx24123_writereg(state, 0x22, (data) & 0xff);
while ((cx24123_readreg(state, 0x20) & 0x80)) { while ((cx24123_readreg(state, 0x20) & 0x80)) {
@ -639,7 +659,8 @@ static int cx24123_pll_writereg(struct dvb_frontend* fe, struct dvb_frontend_par
return 0; 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; struct cx24123_state *state = fe->demodulator_priv;
u8 val; u8 val;
@ -699,11 +720,13 @@ static int cx24123_initfe(struct dvb_frontend* fe)
/* Configure the demod to a good set of defaults */ /* Configure the demod to a good set of defaults */
for (i = 0; i < ARRAY_SIZE(cx24123_regdata); i++) 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 */ /* Set the LNB polarity */
if (state->config->lnb_polarity) if (state->config->lnb_polarity)
cx24123_writereg(state, 0x32, cx24123_readreg(state, 0x32) | 0x02); cx24123_writereg(state, 0x32,
cx24123_readreg(state, 0x32) | 0x02);
if (state->config->dont_use_pll) if (state->config->dont_use_pll)
cx24123_repeater_mode(state, 1, 0); cx24123_repeater_mode(state, 1, 0);
@ -711,7 +734,8 @@ static int cx24123_initfe(struct dvb_frontend* fe)
return 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; struct cx24123_state *state = fe->demodulator_priv;
u8 val; u8 val;
@ -749,7 +773,8 @@ static void cx24123_wait_for_diseqc(struct cx24123_state *state)
} }
} }
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; struct cx24123_state *state = fe->demodulator_priv;
int i, val, tone; int i, val, tone;
@ -771,20 +796,21 @@ static int cx24123_send_diseqc_msg(struct dvb_frontend* fe, struct dvb_diseqc_ma
cx24123_writereg(state, 0x2C + i, cmd->msg[i]); cx24123_writereg(state, 0x2C + i, cmd->msg[i]);
val = cx24123_readreg(state, 0x29); 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 */ /* wait for diseqc message to finish sending */
cx24123_wait_for_diseqc(state); cx24123_wait_for_diseqc(state);
/* restart continuous tone if enabled */ /* restart continuous tone if enabled */
if (tone & 0x10) { if (tone & 0x10)
cx24123_writereg(state, 0x29, tone & ~0x40); cx24123_writereg(state, 0x29, tone & ~0x40);
}
return 0; 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; struct cx24123_state *state = fe->demodulator_priv;
int val, tone; int val, tone;
@ -814,9 +840,9 @@ static int cx24123_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t
cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) & 0xfb); cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) & 0xfb);
/* restart continuous tone if enabled */ /* restart continuous tone if enabled */
if (tone & 0x10) { if (tone & 0x10)
cx24123_writereg(state, 0x29, tone & ~0x40); cx24123_writereg(state, 0x29, tone & ~0x40);
}
return 0; return 0;
} }
@ -853,8 +879,9 @@ static int cx24123_read_status(struct dvb_frontend* fe, fe_status_t* status)
} }
/* /*
* Configured to return the measurement of errors in blocks, because no UCBLOCKS value * Configured to return the measurement of errors in blocks,
* is available, so this value doubles up to satisfy both measurements * 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) static int cx24123_read_ber(struct dvb_frontend *fe, u32 *ber)
{ {
@ -876,7 +903,8 @@ static int cx24123_read_signal_strength(struct dvb_frontend *fe,
{ {
struct cx24123_state *state = fe->demodulator_priv; 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); dprintk("Signal strength = %d\n", *signal_strength);
@ -932,7 +960,8 @@ static int cx24123_set_frontend(struct dvb_frontend *fe,
return 0; 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; struct cx24123_state *state = fe->demodulator_priv;
@ -997,7 +1026,7 @@ static int cx24123_tune(struct dvb_frontend* fe,
static int cx24123_get_algo(struct dvb_frontend *fe) 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)
@ -1057,15 +1086,20 @@ struct dvb_frontend* cx24123_attach(const struct cx24123_config* config,
/* check if the demod is there */ /* check if the demod is there */
state->demod_rev = cx24123_readreg(state, 0x00); state->demod_rev = cx24123_readreg(state, 0x00);
switch (state->demod_rev) { switch (state->demod_rev) {
case 0xe1: info("detected CX24123C\n"); break; case 0xe1:
case 0xd1: info("detected CX24123\n"); break; info("detected CX24123C\n");
break;
case 0xd1:
info("detected CX24123\n");
break;
default: default:
err("wrong demod revision: %x\n", state->demod_rev); err("wrong demod revision: %x\n", state->demod_rev);
goto error; goto error;
} }
/* create dvb_frontend */ /* 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; state->frontend.demodulator_priv = state;
/* create tuner i2c adapter */ /* create tuner i2c adapter */
@ -1090,6 +1124,7 @@ error:
return NULL; return NULL;
} }
EXPORT_SYMBOL(cx24123_attach);
static struct dvb_frontend_ops cx24123_ops = { static struct dvb_frontend_ops cx24123_ops = {
@ -1126,15 +1161,8 @@ static struct dvb_frontend_ops cx24123_ops = {
.get_frontend_algo = cx24123_get_algo, .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 " \ MODULE_DESCRIPTION("DVB Frontend module for Conexant " \
"CX24123/CX24109/CX24113 hardware"); "CX24123/CX24109/CX24113 hardware");
MODULE_AUTHOR("Steven Toth"); MODULE_AUTHOR("Steven Toth");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
EXPORT_SYMBOL(cx24123_attach);

8
drivers/media/dvb/frontends/cx24123.h
Просмотреть файл

@ -23,8 +23,7 @@
#include <linux/dvb/frontend.h> #include <linux/dvb/frontend.h>
struct cx24123_config struct cx24123_config {
{
/* the demodulator's i2c address */ /* the demodulator's i2c address */
u8 demod_address; u8 demod_address;
@ -39,7 +38,8 @@ struct cx24123_config
void (*agc_callback) (struct dvb_frontend *); void (*agc_callback) (struct dvb_frontend *);
}; };
#if defined(CONFIG_DVB_CX24123) || (defined(CONFIG_DVB_CX24123_MODULE) && defined(MODULE)) #if defined(CONFIG_DVB_CX24123) || (defined(CONFIG_DVB_CX24123_MODULE) \
&& defined(MODULE))
extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config, extern struct dvb_frontend *cx24123_attach(const struct cx24123_config *config,
struct i2c_adapter *i2c); struct i2c_adapter *i2c);
extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *); extern struct i2c_adapter *cx24123_get_tuner_i2c_adapter(struct dvb_frontend *);
@ -56,6 +56,6 @@ static struct i2c_adapter *
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL; return NULL;
} }
#endif // CONFIG_DVB_CX24123 #endif
#endif /* CX24123_H */ #endif /* CX24123_H */