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path: root/drivers/media/dvb/frontends/s5h1409.c
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Diffstat (limited to 'drivers/media/dvb/frontends/s5h1409.c')
-rw-r--r--drivers/media/dvb/frontends/s5h1409.c186
1 files changed, 161 insertions, 25 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index 30e8a705fad4..819433485d3b 100644
--- a/drivers/media/dvb/frontends/s5h1409.c
+++ b/drivers/media/dvb/frontends/s5h1409.c
@@ -42,6 +42,10 @@ struct s5h1409_state {
fe_modulation_t current_modulation;
u32 current_frequency;
+ int if_freq;
+
+ u32 is_qam_locked;
+ u32 qam_state;
};
static int debug = 0;
@@ -94,6 +98,7 @@ static struct init_tab {
{ 0xac, 0x1003, },
{ 0xad, 0x103f, },
{ 0xe2, 0x0100, },
+ { 0xe3, 0x1000, },
{ 0x28, 0x1010, },
{ 0xb1, 0x000e, },
};
@@ -103,7 +108,7 @@ static struct vsb_snr_tab {
u16 val;
u16 data;
} vsb_snr_tab[] = {
- { 1023, 770, },
+ { 924, 300, },
{ 923, 300, },
{ 918, 295, },
{ 915, 290, },
@@ -150,6 +155,7 @@ static struct qam64_snr_tab {
u16 val;
u16 data;
} qam64_snr_tab[] = {
+ { 1, 0, },
{ 12, 300, },
{ 15, 290, },
{ 18, 280, },
@@ -213,6 +219,7 @@ static struct qam64_snr_tab {
{ 95, 202, },
{ 96, 201, },
{ 104, 200, },
+ { 255, 0, },
};
/* QAM256 SNR lookup table */
@@ -220,6 +227,7 @@ static struct qam256_snr_tab {
u16 val;
u16 data;
} qam256_snr_tab[] = {
+ { 1, 0, },
{ 12, 400, },
{ 13, 390, },
{ 15, 380, },
@@ -288,6 +296,7 @@ static struct qam256_snr_tab {
{ 105, 262, },
{ 106, 261, },
{ 110, 260, },
+ { 255, 0, },
};
/* 8 bit registers, 16 bit values */
@@ -335,33 +344,44 @@ static int s5h1409_softreset(struct dvb_frontend* fe)
s5h1409_writereg(state, 0xf5, 0);
s5h1409_writereg(state, 0xf5, 1);
+ state->is_qam_locked = 0;
+ state->qam_state = 0;
return 0;
}
+#define S5H1409_VSB_IF_FREQ 5380
+#define S5H1409_QAM_IF_FREQ state->config->qam_if
+
static int s5h1409_set_if_freq(struct dvb_frontend* fe, int KHz)
{
struct s5h1409_state* state = fe->demodulator_priv;
- int ret = 0;
dprintk("%s(%d KHz)\n", __FUNCTION__, KHz);
- if( (KHz == 44000) || (KHz == 5380) ) {
+ switch (KHz) {
+ case 4000:
+ s5h1409_writereg(state, 0x87, 0x014b);
+ s5h1409_writereg(state, 0x88, 0x0cb5);
+ s5h1409_writereg(state, 0x89, 0x03e2);
+ break;
+ case 5380:
+ case 44000:
+ default:
s5h1409_writereg(state, 0x87, 0x01be);
s5h1409_writereg(state, 0x88, 0x0436);
s5h1409_writereg(state, 0x89, 0x054d);
- } else {
- printk("%s() Invalid arg = %d KHz\n", __FUNCTION__, KHz);
- ret = -1;
+ break;
}
+ state->if_freq = KHz;
- return ret;
+ return 0;
}
static int s5h1409_set_spectralinversion(struct dvb_frontend* fe, int inverted)
{
struct s5h1409_state* state = fe->demodulator_priv;
- dprintk("%s()\n", __FUNCTION__);
+ dprintk("%s(%d)\n", __FUNCTION__, inverted);
if(inverted == 1)
return s5h1409_writereg(state, 0x1b, 0x1101); /* Inverted */
@@ -379,17 +399,17 @@ static int s5h1409_enable_modulation(struct dvb_frontend* fe,
switch(m) {
case VSB_8:
dprintk("%s() VSB_8\n", __FUNCTION__);
+ if (state->if_freq != S5H1409_VSB_IF_FREQ)
+ s5h1409_set_if_freq(fe, S5H1409_VSB_IF_FREQ);
s5h1409_writereg(state, 0xf4, 0);
break;
case QAM_64:
- dprintk("%s() QAM_64\n", __FUNCTION__);
- s5h1409_writereg(state, 0xf4, 1);
- s5h1409_writereg(state, 0x85, 0x100);
- break;
case QAM_256:
- dprintk("%s() QAM_256\n", __FUNCTION__);
+ dprintk("%s() QAM_AUTO (64/256)\n", __FUNCTION__);
+ if (state->if_freq != S5H1409_QAM_IF_FREQ)
+ s5h1409_set_if_freq(fe, S5H1409_QAM_IF_FREQ);
s5h1409_writereg(state, 0xf4, 1);
- s5h1409_writereg(state, 0x85, 0x101);
+ s5h1409_writereg(state, 0x85, 0x110);
break;
default:
dprintk("%s() Invalid modulation\n", __FUNCTION__);
@@ -421,9 +441,11 @@ static int s5h1409_set_gpio(struct dvb_frontend* fe, int enable)
dprintk("%s(%d)\n", __FUNCTION__, enable);
if (enable)
- return s5h1409_writereg(state, 0xe3, 0x1100);
+ return s5h1409_writereg(state, 0xe3,
+ s5h1409_readreg(state, 0xe3) | 0x1100);
else
- return s5h1409_writereg(state, 0xe3, 0);
+ return s5h1409_writereg(state, 0xe3,
+ s5h1409_readreg(state, 0xe3) & 0xeeff);
}
static int s5h1409_sleep(struct dvb_frontend* fe, int enable)
@@ -444,6 +466,68 @@ static int s5h1409_register_reset(struct dvb_frontend* fe)
return s5h1409_writereg(state, 0xfa, 0);
}
+static void s5h1409_set_qam_amhum_mode(struct dvb_frontend *fe)
+{
+ struct s5h1409_state *state = fe->demodulator_priv;
+ u16 reg;
+
+ if (state->is_qam_locked)
+ return;
+
+ /* QAM EQ lock check */
+ reg = s5h1409_readreg(state, 0xf0);
+
+ if ((reg >> 13) & 0x1) {
+
+ state->is_qam_locked = 1;
+ reg &= 0xff;
+
+ s5h1409_writereg(state, 0x96, 0x00c);
+ if ((reg < 0x38) || (reg > 0x68) ) {
+ s5h1409_writereg(state, 0x93, 0x3332);
+ s5h1409_writereg(state, 0x9e, 0x2c37);
+ } else {
+ s5h1409_writereg(state, 0x93, 0x3130);
+ s5h1409_writereg(state, 0x9e, 0x2836);
+ }
+
+ } else {
+ s5h1409_writereg(state, 0x96, 0x0008);
+ s5h1409_writereg(state, 0x93, 0x3332);
+ s5h1409_writereg(state, 0x9e, 0x2c37);
+ }
+}
+
+static void s5h1409_set_qam_interleave_mode(struct dvb_frontend *fe)
+{
+ struct s5h1409_state *state = fe->demodulator_priv;
+ u16 reg, reg1, reg2;
+
+ reg = s5h1409_readreg(state, 0xf1);
+
+ /* Master lock */
+ if ((reg >> 15) & 0x1) {
+ if (state->qam_state != 2) {
+ state->qam_state = 2;
+ reg1 = s5h1409_readreg(state, 0xb2);
+ reg2 = s5h1409_readreg(state, 0xad);
+
+ s5h1409_writereg(state, 0x96, 0x20);
+ s5h1409_writereg(state, 0xad,
+ ( ((reg1 & 0xf000) >> 4) | (reg2 & 0xf0ff)) );
+ s5h1409_writereg(state, 0xab,
+ s5h1409_readreg(state, 0xab) & 0xeffe);
+ }
+ } else {
+ if (state->qam_state != 1) {
+ state->qam_state = 1;
+ s5h1409_writereg(state, 0x96, 0x08);
+ s5h1409_writereg(state, 0xab,
+ s5h1409_readreg(state, 0xab) | 0x1001);
+ }
+ }
+}
+
/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
static int s5h1409_set_frontend (struct dvb_frontend* fe,
struct dvb_frontend_parameters *p)
@@ -458,15 +542,54 @@ static int s5h1409_set_frontend (struct dvb_frontend* fe,
s5h1409_enable_modulation(fe, p->u.vsb.modulation);
+ /* Allow the demod to settle */
+ msleep(100);
+
if (fe->ops.tuner_ops.set_params) {
if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1);
fe->ops.tuner_ops.set_params(fe, p);
if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
}
+ /* Optimize the demod for QAM */
+ if (p->u.vsb.modulation != VSB_8) {
+ s5h1409_set_qam_amhum_mode(fe);
+ s5h1409_set_qam_interleave_mode(fe);
+ }
+
return 0;
}
+static int s5h1409_set_mpeg_timing(struct dvb_frontend *fe, int mode)
+{
+ struct s5h1409_state *state = fe->demodulator_priv;
+ u16 val;
+
+ dprintk("%s(%d)\n", __FUNCTION__, mode);
+
+ val = s5h1409_readreg(state, 0xac) & 0xcfff;
+ switch (mode) {
+ case S5H1409_MPEGTIMING_CONTINOUS_INVERTING_CLOCK:
+ val |= 0x0000;
+ break;
+ case S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK:
+ dprintk("%s(%d) Mode1 or Defaulting\n", __FUNCTION__, mode);
+ val |= 0x1000;
+ break;
+ case S5H1409_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK:
+ val |= 0x2000;
+ break;
+ case S5H1409_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK:
+ val |= 0x3000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Configure MPEG Signal Timing charactistics */
+ return s5h1409_writereg(state, 0xac, val);
+}
+
/* Reset the demod hardware and reset all of the configuration registers
to a default state. */
static int s5h1409_init (struct dvb_frontend* fe)
@@ -486,17 +609,20 @@ static int s5h1409_init (struct dvb_frontend* fe)
state->current_modulation = VSB_8;
if (state->config->output_mode == S5H1409_SERIAL_OUTPUT)
- s5h1409_writereg(state, 0xab, 0x100); /* Serial */
+ s5h1409_writereg(state, 0xab,
+ s5h1409_readreg(state, 0xab) | 0x100); /* Serial */
else
- s5h1409_writereg(state, 0xab, 0x0); /* Parallel */
+ s5h1409_writereg(state, 0xab,
+ s5h1409_readreg(state, 0xab) & 0xfeff); /* Parallel */
s5h1409_set_spectralinversion(fe, state->config->inversion);
- s5h1409_set_if_freq(fe, state->config->if_freq);
+ s5h1409_set_if_freq(fe, state->if_freq);
s5h1409_set_gpio(fe, state->config->gpio);
+ s5h1409_set_mpeg_timing(fe, state->config->mpeg_timing);
s5h1409_softreset(fe);
- /* Note: Leaving the I2C gate open here. */
- s5h1409_i2c_gate_ctrl(fe, 1);
+ /* Note: Leaving the I2C gate closed. */
+ s5h1409_i2c_gate_ctrl(fe, 0);
return 0;
}
@@ -594,14 +720,15 @@ static int s5h1409_read_snr(struct dvb_frontend* fe, u16* snr)
u16 reg;
dprintk("%s()\n", __FUNCTION__);
- reg = s5h1409_readreg(state, 0xf1) & 0x1ff;
-
switch(state->current_modulation) {
case QAM_64:
+ reg = s5h1409_readreg(state, 0xf0) & 0xff;
return s5h1409_qam64_lookup_snr(fe, snr, reg);
case QAM_256:
+ reg = s5h1409_readreg(state, 0xf0) & 0xff;
return s5h1409_qam256_lookup_snr(fe, snr, reg);
case VSB_8:
+ reg = s5h1409_readreg(state, 0xf1) & 0x3ff;
return s5h1409_vsb_lookup_snr(fe, snr, reg);
default:
break;
@@ -660,6 +787,7 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
struct i2c_adapter* i2c)
{
struct s5h1409_state* state = NULL;
+ u16 reg;
/* allocate memory for the internal state */
state = kmalloc(sizeof(struct s5h1409_state), GFP_KERNEL);
@@ -670,9 +798,11 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
state->config = config;
state->i2c = i2c;
state->current_modulation = 0;
+ state->if_freq = S5H1409_VSB_IF_FREQ;
/* check if the demod exists */
- if (s5h1409_readreg(state, 0x04) != 0x0066)
+ reg = s5h1409_readreg(state, 0x04);
+ if ((reg != 0x0066) && (reg != 0x007f))
goto error;
/* create dvb_frontend */
@@ -680,8 +810,14 @@ struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
+ if (s5h1409_init(&state->frontend) != 0) {
+ printk(KERN_ERR "%s: Failed to initialize correctly\n",
+ __FUNCTION__);
+ goto error;
+ }
+
/* Note: Leaving the I2C gate open here. */
- s5h1409_writereg(state, 0xf3, 1);
+ s5h1409_i2c_gate_ctrl(&state->frontend, 1);
return &state->frontend;
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-25 03:30:27 +0300