[DVB patch 14/54] frontend: s5h1420: fixes

Johannes Stezenbach
2005-09-04T23:47:01Z

[-- Attachment #1: dvb-frontend-s5h1420-fixes.patch --]
[-- Type: text/plain, Size: 14930 bytes --]

From: Andrew de Quincey <adq_dvb@lidskialf.net>

Misc. fixes.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>

drivers/media/dvb/frontends/s5h1420.c | 162 +++++++++++++++++++---------------
drivers/media/dvb/frontends/s5h1420.h | 3
drivers/media/dvb/ttpci/budget.c | 1
3 files changed, 97 insertions(+), 69 deletions(-)

--- linux-2.6.13-git4.orig/drivers/media/dvb/frontends/s5h1420.c 2005-09-04 22:24:24.000000000 +0200
+++ linux-2.6.13-git4/drivers/media/dvb/frontends/s5h1420.c 2005-09-04 22:28:04.000000000 +0200
@@ -48,7 +48,8 @@ struct s5h1420_state {
};

static u32 s5h1420_getsymbolrate(struct s5h1420_state* state);
-static int s5h1420_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings);
+static int s5h1420_get_tune_settings(struct dvb_frontend* fe,
+ struct dvb_frontend_tune_settings* fesettings);

static int debug = 0;
@@ -91,7 +92,8 @@ static int s5h1420_set_voltage (struct d

switch(voltage) {
case SEC_VOLTAGE_13:
- s5h1420_writereg(state, 0x3c, (s5h1420_readreg(state, 0x3c) & 0xfe) | 0x02);
+ s5h1420_writereg(state, 0x3c,
+ (s5h1420_readreg(state, 0x3c) & 0xfe) | 0x02);
break;

case SEC_VOLTAGE_18:
@@ -112,18 +114,21 @@ static int s5h1420_set_tone (struct dvb_

switch(tone) {
case SEC_TONE_ON:
- s5h1420_writereg(state, 0x3b, (s5h1420_readreg(state, 0x3b) & 0x74) | 0x08);
+ s5h1420_writereg(state, 0x3b,
+ (s5h1420_readreg(state, 0x3b) & 0x74) | 0x08);
break;

case SEC_TONE_OFF:
- s5h1420_writereg(state, 0x3b, (s5h1420_readreg(state, 0x3b) & 0x74) | 0x01);
+ s5h1420_writereg(state, 0x3b,
+ (s5h1420_readreg(state, 0x3b) & 0x74) | 0x01);
break;
}

return 0;
}

-static int s5h1420_send_master_cmd (struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd)
+static int s5h1420_send_master_cmd (struct dvb_frontend* fe,
+ struct dvb_diseqc_master_cmd* cmd)
{
struct s5h1420_state* state = fe->demodulator_priv;
u8 val;
@@ -131,6 +136,9 @@ static int s5h1420_send_master_cmd (stru
unsigned long timeout;
int result = 0;

+ if (cmd->msg_len > 8)
+ return -EINVAL;
+
/* setup for DISEQC */
val = s5h1420_readreg(state, 0x3b);
s5h1420_writereg(state, 0x3b, 0x02);
@@ -138,16 +146,17 @@ static int s5h1420_send_master_cmd (stru

/* write the DISEQC command bytes */
for(i=0; i< cmd->msg_len; i++) {
- s5h1420_writereg(state, 0x3c + i, cmd->msg[i]);
+ s5h1420_writereg(state, 0x3d + i, cmd->msg[i]);
}

/* kick off transmission */
- s5h1420_writereg(state, 0x3b, s5h1420_readreg(state, 0x3b) | ((cmd->msg_len-1) << 4) | 0x08);
+ s5h1420_writereg(state, 0x3b, s5h1420_readreg(state, 0x3b) |
+ ((cmd->msg_len-1) << 4) | 0x08);

/* wait for transmission to complete */
timeout = jiffies + ((100*HZ) / 1000);
while(time_before(jiffies, timeout)) {
- if (s5h1420_readreg(state, 0x3b) & 0x08)
+ if (!(s5h1420_readreg(state, 0x3b) & 0x08))
break;

msleep(5);
@@ -161,7 +170,8 @@ static int s5h1420_send_master_cmd (stru
return result;
}

-static int s5h1420_recv_slave_reply (struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply)
+static int s5h1420_recv_slave_reply (struct dvb_frontend* fe,
+ struct dvb_diseqc_slave_reply* reply)
{
struct s5h1420_state* state = fe->demodulator_priv;
u8 val;
@@ -205,7 +215,7 @@ static int s5h1420_recv_slave_reply (str

/* extract data */
for(i=0; i< length; i++) {
- reply->msg[i] = s5h1420_readreg(state, 0x3c + i);
+ reply->msg[i] = s5h1420_readreg(state, 0x3d + i);
}

exit:
@@ -236,7 +246,7 @@ static int s5h1420_send_burst (struct dv
s5h1420_writereg(state, 0x3b, s5h1420_readreg(state, 0x3b) | 0x08);

/* wait for transmission to complete */
- timeout = jiffies + ((20*HZ) / 1000);
+ timeout = jiffies + ((100*HZ) / 1000);
while(time_before(jiffies, timeout)) {
if (!(s5h1420_readreg(state, 0x3b) & 0x08))
break;
@@ -259,9 +269,9 @@ static fe_status_t s5h1420_get_status_bi

val = s5h1420_readreg(state, 0x14);
if (val & 0x02)
- status |= FE_HAS_SIGNAL; // FIXME: not sure if this is right
+ status |= FE_HAS_SIGNAL;
if (val & 0x01)
- status |= FE_HAS_CARRIER; // FIXME: not sure if this is right
+ status |= FE_HAS_CARRIER;
val = s5h1420_readreg(state, 0x36);
if (val & 0x01)
status |= FE_HAS_VITERBI;
@@ -284,8 +294,8 @@ static int s5h1420_read_status(struct dv
/* determine lock state */
*status = s5h1420_get_status_bits(state);

- /* fix for FEC 5/6 inversion issue - if it doesn't quite lock, invert the inversion,
- wait a bit and check again */
+ /* fix for FEC 5/6 inversion issue - if it doesn't quite lock, invert
+ the inversion, wait a bit and check again */
if (*status == (FE_HAS_SIGNAL|FE_HAS_CARRIER|FE_HAS_VITERBI)) {
val = s5h1420_readreg(state, 0x32);
if ((val & 0x07) == 0x03) {
@@ -330,6 +340,10 @@ static int s5h1420_read_status(struct dv
tmp = (tmp * 2 * 7) / 8;
break;
}
+ if (tmp == 0) {
+ printk("s5h1420: avoided division by 0\n");
+ tmp = 1;
+ }
tmp = state->fclk / tmp;

/* set the MPEG_CLK_INTL for the calculated data rate */
@@ -368,16 +382,21 @@ static int s5h1420_read_ber(struct dvb_f

s5h1420_writereg(state, 0x46, 0x1d);
mdelay(25);
- return (s5h1420_readreg(state, 0x48) << 8) | s5h1420_readreg(state, 0x47);
+
+ *ber = (s5h1420_readreg(state, 0x48) << 8) | s5h1420_readreg(state, 0x47);
+
+ return 0;
}

static int s5h1420_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
struct s5h1420_state* state = fe->demodulator_priv;

- u8 val = 0xff - s5h1420_readreg(state, 0x15);
+ u8 val = s5h1420_readreg(state, 0x15);

- return (int) ((val << 8) | val);
+ *strength = (u16) ((val << 8) | val);
+
+ return 0;
}

static int s5h1420_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
@@ -386,7 +405,10 @@ static int s5h1420_read_ucblocks(struct

s5h1420_writereg(state, 0x46, 0x1f);
mdelay(25);
- return (s5h1420_readreg(state, 0x48) << 8) | s5h1420_readreg(state, 0x47);
+
+ *ucblocks = (s5h1420_readreg(state, 0x48) << 8) | s5h1420_readreg(state, 0x47);
+
+ return 0;
}

static void s5h1420_reset(struct s5h1420_state* state)
@@ -396,11 +418,12 @@ static void s5h1420_reset(struct s5h1420
udelay(10);
}

-static void s5h1420_setsymbolrate(struct s5h1420_state* state, struct dvb_frontend_parameters *p)
+static void s5h1420_setsymbolrate(struct s5h1420_state* state,
+ struct dvb_frontend_parameters *p)
{
u64 val;

- val = (p->u.qpsk.symbol_rate / 1000) * (1<<24);
+ val = ((u64) p->u.qpsk.symbol_rate / 1000ULL) * (1ULL<<24);
if (p->u.qpsk.symbol_rate <= 21000000) {
val *= 2;
}
@@ -415,7 +438,7 @@ static void s5h1420_setsymbolrate(struct

static u32 s5h1420_getsymbolrate(struct s5h1420_state* state)
{
- u64 val;
+ u64 val = 0;
int sampling = 2;

if (s5h1420_readreg(state, 0x05) & 0x2)
@@ -427,10 +450,10 @@ static u32 s5h1420_getsymbolrate(struct
val |= s5h1420_readreg(state, 0x13);
s5h1420_writereg(state, 0x06, s5h1420_readreg(state, 0x06) & 0xf7);

- val *= (state->fclk / 1000);
+ val *= (state->fclk / 1000ULL);
do_div(val, ((1<<24) * sampling));

- return (u32) (val * 1000);
+ return (u32) (val * 1000ULL);
}

static void s5h1420_setfreqoffset(struct s5h1420_state* state, int freqoffset)
@@ -463,46 +486,55 @@ static int s5h1420_getfreqoffset(struct

/* remember freqoffset is in kHz, but the chip wants the offset in Hz, so
* divide fclk by 1000000 to get the correct value. */
- val = - ((val * (state->fclk/1000000)) / (1<<24));
+ val = (((-val) * (state->fclk/1000000)) / (1<<24));

return val;
}

-static void s5h1420_setfec(struct s5h1420_state* state, struct dvb_frontend_parameters *p)
+static void s5h1420_setfec_inversion(struct s5h1420_state* state,
+ struct dvb_frontend_parameters *p)
{
+ u8 inversion = 0;
+
+ if (p->inversion == INVERSION_OFF) {
+ inversion = state->config->invert ? 0x08 : 0;
+ } else if (p->inversion == INVERSION_ON) {
+ inversion = state->config->invert ? 0 : 0x08;
+ }
+
if ((p->u.qpsk.fec_inner == FEC_AUTO) || (p->inversion == INVERSION_AUTO)) {
- s5h1420_writereg(state, 0x31, 0x00);
s5h1420_writereg(state, 0x30, 0x3f);
+ s5h1420_writereg(state, 0x31, 0x00 | inversion);
} else {
switch(p->u.qpsk.fec_inner) {
case FEC_1_2:
- s5h1420_writereg(state, 0x31, 0x10);
s5h1420_writereg(state, 0x30, 0x01);
+ s5h1420_writereg(state, 0x31, 0x10 | inversion);
break;

case FEC_2_3:
- s5h1420_writereg(state, 0x31, 0x11);
s5h1420_writereg(state, 0x30, 0x02);
+ s5h1420_writereg(state, 0x31, 0x11 | inversion);
break;

case FEC_3_4:
- s5h1420_writereg(state, 0x31, 0x12);
s5h1420_writereg(state, 0x30, 0x04);
- break;
+ s5h1420_writereg(state, 0x31, 0x12 | inversion);
+ break;

case FEC_5_6:
- s5h1420_writereg(state, 0x31, 0x13);
s5h1420_writereg(state, 0x30, 0x08);
+ s5h1420_writereg(state, 0x31, 0x13 | inversion);
break;

case FEC_6_7:
- s5h1420_writereg(state, 0x31, 0x14);
s5h1420_writereg(state, 0x30, 0x10);
+ s5h1420_writereg(state, 0x31, 0x14 | inversion);
break;

case FEC_7_8:
- s5h1420_writereg(state, 0x31, 0x15);
s5h1420_writereg(state, 0x30, 0x20);
+ s5h1420_writereg(state, 0x31, 0x15 | inversion);
break;

default:
@@ -536,22 +568,6 @@ static fe_code_rate_t s5h1420_getfec(str
return FEC_NONE;
}

-static void s5h1420_setinversion(struct s5h1420_state* state, struct dvb_frontend_parameters *p)
-{
- if ((p->u.qpsk.fec_inner == FEC_AUTO) || (p->inversion == INVERSION_AUTO)) {
- s5h1420_writereg(state, 0x31, 0x00);
- s5h1420_writereg(state, 0x30, 0x3f);
- } else {
- u8 tmp = s5h1420_readreg(state, 0x31) & 0xf7;
- tmp |= 0x10;
-
- if (p->inversion == INVERSION_ON)
- tmp |= 0x80;
-
- s5h1420_writereg(state, 0x31, tmp);
- }
-}
-
static fe_spectral_inversion_t s5h1420_getinversion(struct s5h1420_state* state)
{
if (s5h1420_readreg(state, 0x32) & 0x08)
@@ -560,35 +576,35 @@ static fe_spectral_inversion_t s5h1420_g
return INVERSION_OFF;
}

-static int s5h1420_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+static int s5h1420_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *p)
{
struct s5h1420_state* state = fe->demodulator_priv;
- u32 frequency_delta;
+ int frequency_delta;
struct dvb_frontend_tune_settings fesettings;
+ u32 tmp;

/* check if we should do a fast-tune */
memcpy(&fesettings.parameters, p, sizeof(struct dvb_frontend_parameters));
s5h1420_get_tune_settings(fe, &fesettings);
frequency_delta = p->frequency - state->tunedfreq;
- if ((frequency_delta > -fesettings.max_drift) && (frequency_delta < fesettings.max_drift) &&
+ if ((frequency_delta > -fesettings.max_drift) &&
+ (frequency_delta < fesettings.max_drift) &&
(frequency_delta != 0) &&
(state->fec_inner == p->u.qpsk.fec_inner) &&
(state->symbol_rate == p->u.qpsk.symbol_rate)) {

- s5h1420_setfreqoffset(state, frequency_delta);
+ if (state->config->pll_set) {
+ s5h1420_writereg (state, 0x02, s5h1420_readreg(state,0x02) | 1);
+ state->config->pll_set(fe, p, &tmp);
+ s5h1420_setfreqoffset(state, p->frequency - tmp);
+ }
return 0;
}

/* first of all, software reset */
s5h1420_reset(state);

- /* set tuner PLL */
- if (state->config->pll_set) {
- s5h1420_writereg (state, 0x02, s5h1420_readreg(state,0x02) | 1);
- state->config->pll_set(fe, p, &state->tunedfreq);
- s5h1420_writereg (state, 0x02, s5h1420_readreg(state,0x02) & 0xfe);
- }
-
/* set s5h1420 fclk PLL according to desired symbol rate */
if (p->u.qpsk.symbol_rate > 28000000) {
state->fclk = 88000000;
@@ -609,8 +625,9 @@ static int s5h1420_set_frontend(struct d

/* set misc registers */
s5h1420_writereg(state, 0x02, 0x00);
+ s5h1420_writereg(state, 0x06, 0x00);
s5h1420_writereg(state, 0x07, 0xb0);
- s5h1420_writereg(state, 0x0a, 0x67);
+ s5h1420_writereg(state, 0x0a, 0xe7);
s5h1420_writereg(state, 0x0b, 0x78);
s5h1420_writereg(state, 0x0c, 0x48);
s5h1420_writereg(state, 0x0d, 0x6b);
@@ -626,21 +643,26 @@ static int s5h1420_set_frontend(struct d
/* start QPSK */
s5h1420_writereg(state, 0x05, s5h1420_readreg(state, 0x05) | 1);

- /* set the frequency offset to adjust for PLL inaccuracy */
- s5h1420_setfreqoffset(state, p->frequency - state->tunedfreq);
+ /* set tuner PLL */
+ if (state->config->pll_set) {
+ s5h1420_writereg (state, 0x02, s5h1420_readreg(state,0x02) | 1);
+ state->config->pll_set(fe, p, &tmp);
+ s5h1420_setfreqoffset(state, 0);
+ }

/* set the reset of the parameters */
s5h1420_setsymbolrate(state, p);
- s5h1420_setinversion(state, p);
- s5h1420_setfec(state, p);
+ s5h1420_setfec_inversion(state, p);

state->fec_inner = p->u.qpsk.fec_inner;
state->symbol_rate = p->u.qpsk.symbol_rate;
state->postlocked = 0;
+ state->tunedfreq = p->frequency;
return 0;
}

-static int s5h1420_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
+static int s5h1420_get_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *p)
{
struct s5h1420_state* state = fe->demodulator_priv;

@@ -652,7 +674,8 @@ static int s5h1420_get_frontend(struct d
return 0;
}

-static int s5h1420_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
+static int s5h1420_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;
@@ -717,7 +740,8 @@ static void s5h1420_release(struct dvb_f

static struct dvb_frontend_ops s5h1420_ops;

-struct dvb_frontend* s5h1420_attach(const struct s5h1420_config* config, struct i2c_adapter* i2c)
+struct dvb_frontend* s5h1420_attach(const struct s5h1420_config* config,
+ struct i2c_adapter* i2c)
{
struct s5h1420_state* state = NULL;
u8 identity;
--- linux-2.6.13-git4.orig/drivers/media/dvb/frontends/s5h1420.h 2005-09-04 22:24:24.000000000 +0200
+++ linux-2.6.13-git4/drivers/media/dvb/frontends/s5h1420.h 2005-09-04 22:28:04.000000000 +0200
@@ -30,6 +30,9 @@ struct s5h1420_config
/* the demodulator's i2c address */
u8 demod_address;

+ /* does the inversion require inversion? */
+ u8 invert:1;
+
/* PLL maintenance */
int (*pll_init)(struct dvb_frontend* fe);
int (*pll_set)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params, u32* freqout);
--- linux-2.6.13-git4.orig/drivers/media/dvb/ttpci/budget.c 2005-09-04 22:28:03.000000000 +0200
+++ linux-2.6.13-git4/drivers/media/dvb/ttpci/budget.c 2005-09-04 22:28:04.000000000 +0200
@@ -480,6 +480,7 @@ static int s5h1420_pll_set(struct dvb_fr

static struct s5h1420_config s5h1420_config = {
.demod_address = 0x53,
+ .invert = 1,
.pll_set = s5h1420_pll_set,
};

--