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path: root/drivers/media/dvb/frontends/s5h1411.c
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Diffstat (limited to 'drivers/media/dvb/frontends/s5h1411.c')
-rw-r--r--drivers/media/dvb/frontends/s5h1411.c84
1 files changed, 58 insertions, 26 deletions
diff --git a/drivers/media/dvb/frontends/s5h1411.c b/drivers/media/dvb/frontends/s5h1411.c
index 2febfb5a846b..40644aacffcb 100644
--- a/drivers/media/dvb/frontends/s5h1411.c
+++ b/drivers/media/dvb/frontends/s5h1411.c
@@ -38,6 +38,7 @@ struct s5h1411_state {
struct dvb_frontend frontend;
fe_modulation_t current_modulation;
+ unsigned int first_tune:1;
u32 current_frequency;
int if_freq;
@@ -62,7 +63,7 @@ static struct init_tab {
{ S5H1411_I2C_TOP_ADDR, 0x08, 0x0047, },
{ S5H1411_I2C_TOP_ADDR, 0x1c, 0x0400, },
{ S5H1411_I2C_TOP_ADDR, 0x1e, 0x0370, },
- { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342a, },
+ { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342c, },
{ S5H1411_I2C_TOP_ADDR, 0x24, 0x0231, },
{ S5H1411_I2C_TOP_ADDR, 0x25, 0x1011, },
{ S5H1411_I2C_TOP_ADDR, 0x26, 0x0f07, },
@@ -100,7 +101,6 @@ static struct init_tab {
{ S5H1411_I2C_TOP_ADDR, 0x78, 0x3141, },
{ S5H1411_I2C_TOP_ADDR, 0x7a, 0x3141, },
{ S5H1411_I2C_TOP_ADDR, 0xb3, 0x8003, },
- { S5H1411_I2C_TOP_ADDR, 0xb5, 0xafbb, },
{ S5H1411_I2C_TOP_ADDR, 0xb5, 0xa6bb, },
{ S5H1411_I2C_TOP_ADDR, 0xb6, 0x0609, },
{ S5H1411_I2C_TOP_ADDR, 0xb7, 0x2f06, },
@@ -393,7 +393,7 @@ static int s5h1411_set_if_freq(struct dvb_frontend *fe, int KHz)
switch (KHz) {
case 3250:
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d9);
+ s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d5);
s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x5342);
s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x10d9);
break;
@@ -464,13 +464,25 @@ static int s5h1411_set_spectralinversion(struct dvb_frontend *fe, int inversion)
if (inversion == 1)
val |= 0x1000; /* Inverted */
- else
- val |= 0x0000;
state->inversion = inversion;
return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x24, val);
}
+static int s5h1411_set_serialmode(struct dvb_frontend *fe, int serial)
+{
+ struct s5h1411_state *state = fe->demodulator_priv;
+ u16 val;
+
+ dprintk("%s(%d)\n", __func__, serial);
+ val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xbd) & ~0x100;
+
+ if (serial == 1)
+ val |= 0x100;
+
+ return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, val);
+}
+
static int s5h1411_enable_modulation(struct dvb_frontend *fe,
fe_modulation_t m)
{
@@ -478,6 +490,12 @@ static int s5h1411_enable_modulation(struct dvb_frontend *fe,
dprintk("%s(0x%08x)\n", __func__, m);
+ if ((state->first_tune == 0) && (m == state->current_modulation)) {
+ dprintk("%s() Already at desired modulation. Skipping...\n",
+ __func__);
+ return 0;
+ }
+
switch (m) {
case VSB_8:
dprintk("%s() VSB_8\n", __func__);
@@ -502,6 +520,7 @@ static int s5h1411_enable_modulation(struct dvb_frontend *fe,
}
state->current_modulation = m;
+ state->first_tune = 0;
s5h1411_softreset(fe);
return 0;
@@ -535,7 +554,7 @@ static int s5h1411_set_gpio(struct dvb_frontend *fe, int enable)
return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0, val);
}
-static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
+static int s5h1411_set_powerstate(struct dvb_frontend *fe, int enable)
{
struct s5h1411_state *state = fe->demodulator_priv;
@@ -551,6 +570,11 @@ static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
return 0;
}
+static int s5h1411_sleep(struct dvb_frontend *fe)
+{
+ return s5h1411_set_powerstate(fe, 1);
+}
+
static int s5h1411_register_reset(struct dvb_frontend *fe)
{
struct s5h1411_state *state = fe->demodulator_priv;
@@ -574,9 +598,6 @@ static int s5h1411_set_frontend(struct dvb_frontend *fe,
s5h1411_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);
@@ -587,6 +608,10 @@ static int s5h1411_set_frontend(struct dvb_frontend *fe,
fe->ops.i2c_gate_ctrl(fe, 0);
}
+ /* Issue a reset to the demod so it knows to resync against the
+ newly tuned frequency */
+ s5h1411_softreset(fe);
+
return 0;
}
@@ -599,7 +624,7 @@ static int s5h1411_init(struct dvb_frontend *fe)
dprintk("%s()\n", __func__);
- s5h1411_sleep(fe, 0);
+ s5h1411_set_powerstate(fe, 0);
s5h1411_register_reset(fe);
for (i = 0; i < ARRAY_SIZE(init_tab); i++)
@@ -610,12 +635,17 @@ static int s5h1411_init(struct dvb_frontend *fe)
/* The datasheet says that after initialisation, VSB is default */
state->current_modulation = VSB_8;
+ /* Although the datasheet says it's in VSB, empirical evidence
+ shows problems getting lock on the first tuning request. Make
+ sure we call enable_modulation the first time around */
+ state->first_tune = 1;
+
if (state->config->output_mode == S5H1411_SERIAL_OUTPUT)
/* Serial */
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1101);
+ s5h1411_set_serialmode(fe, 1);
else
/* Parallel */
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1001);
+ s5h1411_set_serialmode(fe, 0);
s5h1411_set_spectralinversion(fe, state->config->inversion);
s5h1411_set_if_freq(fe, state->config->vsb_if);
@@ -637,28 +667,29 @@ static int s5h1411_read_status(struct dvb_frontend *fe, fe_status_t *status)
*status = 0;
- /* Get the demodulator status */
- reg = (s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2) >> 15)
- & 0x0001;
- if (reg)
- *status |= FE_HAS_LOCK | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+ /* Register F2 bit 15 = Master Lock, removed */
switch (state->current_modulation) {
case QAM_64:
case QAM_256:
reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf0);
- if (reg & 0x100)
- *status |= FE_HAS_VITERBI;
- if (reg & 0x10)
- *status |= FE_HAS_SYNC;
+ if (reg & 0x10) /* QAM FEC Lock */
+ *status |= FE_HAS_SYNC | FE_HAS_LOCK;
+ if (reg & 0x100) /* QAM EQ Lock */
+ *status |= FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+
break;
case VSB_8:
- reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x5e);
- if (reg & 0x0001)
- *status |= FE_HAS_SYNC;
reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2);
- if (reg & 0x1000)
- *status |= FE_HAS_VITERBI;
+ if (reg & 0x1000) /* FEC Lock */
+ *status |= FE_HAS_SYNC | FE_HAS_LOCK;
+ if (reg & 0x2000) /* EQ Lock */
+ *status |= FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+
+ reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x53);
+ if (reg & 0x1) /* AFC Lock */
+ *status |= FE_HAS_SIGNAL;
+
break;
default:
return -EINVAL;
@@ -863,6 +894,7 @@ static struct dvb_frontend_ops s5h1411_ops = {
},
.init = s5h1411_init,
+ .sleep = s5h1411_sleep,
.i2c_gate_ctrl = s5h1411_i2c_gate_ctrl,
.set_frontend = s5h1411_set_frontend,
.get_frontend = s5h1411_get_frontend,
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-07 12:03:49 +0000