int if_freq;
u32 is_qam_locked;
- u32 qam_state;
+
+ /* QAM tuning state goes through the following state transitions */
+#define QAM_STATE_UNTUNED 0
+#define QAM_STATE_TUNING_STARTED 1
+#define QAM_STATE_INTERLEAVE_SET 2
+#define QAM_STATE_QAM_OPTIMIZED_L1 3
+#define QAM_STATE_QAM_OPTIMIZED_L2 4
+#define QAM_STATE_QAM_OPTIMIZED_L3 5
+ u8 qam_state;
};
static int debug;
s5h1409_writereg(state, 0xf5, 0);
s5h1409_writereg(state, 0xf5, 1);
state->is_qam_locked = 0;
- state->qam_state = 0;
+ state->qam_state = QAM_STATE_UNTUNED;
return 0;
}
struct s5h1409_state *state = fe->demodulator_priv;
u16 reg;
+ if (state->qam_state < QAM_STATE_INTERLEAVE_SET) {
+ /* We should not perform amhum optimization until
+ the interleave mode has been configured */
+ return;
+ }
+
+ if (state->qam_state == QAM_STATE_QAM_OPTIMIZED_L3) {
+ /* We've already reached the maximum optimization level, so
+ dont bother banging on the status registers */
+ return;
+ }
+
+ /* QAM EQ lock check */
+ reg = s5h1409_readreg(state, 0xf0);
+
+ if ((reg >> 13) & 0x1) {
+ reg &= 0xff;
+
+ s5h1409_writereg(state, 0x96, 0x000c);
+ if (reg < 0x68) {
+ if (state->qam_state < QAM_STATE_QAM_OPTIMIZED_L3) {
+ dprintk("%s() setting QAM state to OPT_L3\n",
+ __func__);
+ s5h1409_writereg(state, 0x93, 0x3130);
+ s5h1409_writereg(state, 0x9e, 0x2836);
+ state->qam_state = QAM_STATE_QAM_OPTIMIZED_L3;
+ }
+ } else {
+ if (state->qam_state < QAM_STATE_QAM_OPTIMIZED_L2) {
+ dprintk("%s() setting QAM state to OPT_L2\n",
+ __func__);
+ s5h1409_writereg(state, 0x93, 0x3332);
+ s5h1409_writereg(state, 0x9e, 0x2c37);
+ state->qam_state = QAM_STATE_QAM_OPTIMIZED_L2;
+ }
+ }
+
+ } else {
+ if (state->qam_state < QAM_STATE_QAM_OPTIMIZED_L1) {
+ dprintk("%s() setting QAM state to OPT_L1\n", __func__);
+ s5h1409_writereg(state, 0x96, 0x0008);
+ s5h1409_writereg(state, 0x93, 0x3332);
+ s5h1409_writereg(state, 0x9e, 0x2c37);
+ state->qam_state = QAM_STATE_QAM_OPTIMIZED_L1;
+ }
+ }
+}
+
+static void s5h1409_set_qam_amhum_mode_legacy(struct dvb_frontend *fe)
+{
+ struct s5h1409_state *state = fe->demodulator_priv;
+ u16 reg;
+
if (state->is_qam_locked)
return;
struct s5h1409_state *state = fe->demodulator_priv;
u16 reg, reg1, reg2;
+ if (state->qam_state >= QAM_STATE_INTERLEAVE_SET) {
+ /* We've done the optimization already */
+ return;
+ }
+
+ reg = s5h1409_readreg(state, 0xf1);
+
+ /* Master lock */
+ if ((reg >> 15) & 0x1) {
+ if (state->qam_state == QAM_STATE_UNTUNED ||
+ state->qam_state == QAM_STATE_TUNING_STARTED) {
+ dprintk("%s() setting QAM state to INTERLEAVE_SET\n",
+ __func__);
+ reg1 = s5h1409_readreg(state, 0xb2);
+ reg2 = s5h1409_readreg(state, 0xad);
+
+ s5h1409_writereg(state, 0x96, 0x0020);
+ s5h1409_writereg(state, 0xad,
+ (((reg1 & 0xf000) >> 4) | (reg2 & 0xf0ff)));
+ state->qam_state = QAM_STATE_INTERLEAVE_SET;
+ }
+ } else {
+ if (state->qam_state == QAM_STATE_UNTUNED) {
+ dprintk("%s() setting QAM state to TUNING_STARTED\n",
+ __func__);
+ s5h1409_writereg(state, 0x96, 0x08);
+ s5h1409_writereg(state, 0xab,
+ s5h1409_readreg(state, 0xab) | 0x1001);
+ state->qam_state = QAM_STATE_TUNING_STARTED;
+ }
+ }
+}
+
+static void s5h1409_set_qam_interleave_mode_legacy(struct dvb_frontend *fe)
+{
+ struct s5h1409_state *state = fe->demodulator_priv;
+ u16 reg, reg1, reg2;
+
reg = s5h1409_readreg(state, 0xf1);
/* Master lock */
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);
- }
-
/* Issue a reset to the demod so it knows to resync against the
newly tuned frequency */
s5h1409_softreset(fe);
+ /* Optimize the demod for QAM */
+ if (state->current_modulation != VSB_8) {
+ /* This almost certainly applies to all boards, but for now
+ only do it for the HVR-1600. Once the other boards are
+ tested, the "legacy" versions can just go away */
+ if (state->config->hvr1600_opt == S5H1409_HVR1600_OPTIMIZE) {
+ s5h1409_set_qam_interleave_mode(fe);
+ s5h1409_set_qam_amhum_mode(fe);
+ } else {
+ s5h1409_set_qam_amhum_mode_legacy(fe);
+ s5h1409_set_qam_interleave_mode_legacy(fe);
+ }
+ }
+
return 0;
}
/* The datasheet says that after initialisation, VSB is default */
state->current_modulation = VSB_8;
+ /* Optimize for the HVR-1600 if appropriate. Note that some of these
+ may get folded into the generic case after testing with other
+ devices */
+ if (state->config->hvr1600_opt == S5H1409_HVR1600_OPTIMIZE) {
+ /* VSB AGC REF */
+ s5h1409_writereg(state, 0x09, 0x0050);
+
+ /* Unknown but Windows driver does it... */
+ s5h1409_writereg(state, 0x21, 0x0001);
+ s5h1409_writereg(state, 0x50, 0x030e);
+
+ /* QAM AGC REF */
+ s5h1409_writereg(state, 0x82, 0x0800);
+ }
+
if (state->config->output_mode == S5H1409_SERIAL_OUTPUT)
s5h1409_writereg(state, 0xab,
s5h1409_readreg(state, 0xab) | 0x100); /* Serial */
*status = 0;
+ /* Optimize the demod for QAM */
+ if (state->current_modulation != VSB_8) {
+ /* This almost certainly applies to all boards, but for now
+ only do it for the HVR-1600. Once the other boards are
+ tested, the "legacy" versions can just go away */
+ if (state->config->hvr1600_opt == S5H1409_HVR1600_OPTIMIZE) {
+ s5h1409_set_qam_interleave_mode(fe);
+ s5h1409_set_qam_amhum_mode(fe);
+ }
+ }
+
/* Get the demodulator status */
reg = s5h1409_readreg(state, 0xf1);
if (reg & 0x1000)
projects / linux-beck.git / blobdiff