#include "dvb_frontend.h"
#include "mb86a20s.h"
+#define NUM_LAYERS 3
+
static int debug = 1;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
+enum mb86a20s_bandwidth {
+ MB86A20S_13SEG = 0,
+ MB86A20S_13SEG_PARTIAL = 1,
+ MB86A20S_1SEG = 2,
+ MB86A20S_3SEG = 3,
+};
+
+u8 mb86a20s_subchannel[] = {
+ 0xb0, 0xc0, 0xd0, 0xe0,
+ 0xf0, 0x00, 0x10, 0x20,
+};
+
struct mb86a20s_state {
struct i2c_adapter *i2c;
const struct mb86a20s_config *config;
struct dvb_frontend frontend;
+ u32 if_freq;
+ enum mb86a20s_bandwidth bw;
+ bool inversion;
+ u32 subchannel;
+
+ u32 estimated_rate[NUM_LAYERS];
+ unsigned long get_strength_time;
+
bool need_init;
};
u8 data;
};
+#define BER_SAMPLING_RATE 1 /* Seconds */
+
/*
* Initialization sequence: Use whatevere default values that PV SBTVD
* does on its initialisation, obtained via USB snoop
*/
-static struct regdata mb86a20s_init[] = {
+static struct regdata mb86a20s_init1[] = {
{ 0x70, 0x0f },
{ 0x70, 0xff },
{ 0x08, 0x01 },
- { 0x09, 0x3e },
- { 0x50, 0xd1 }, { 0x51, 0x22 },
- { 0x39, 0x01 },
- { 0x71, 0x00 },
- { 0x28, 0x2a }, { 0x29, 0x00 }, { 0x2a, 0xff }, { 0x2b, 0x80 },
- { 0x28, 0x20 }, { 0x29, 0x33 }, { 0x2a, 0xdf }, { 0x2b, 0xa9 },
+ { 0x50, 0xd1 }, { 0x51, 0x20 },
+};
+
+static struct regdata mb86a20s_init2[] = {
{ 0x28, 0x22 }, { 0x29, 0x00 }, { 0x2a, 0x1f }, { 0x2b, 0xf0 },
{ 0x3b, 0x21 },
- { 0x3c, 0x3a },
+ { 0x3c, 0x38 },
{ 0x01, 0x0d },
- { 0x04, 0x08 }, { 0x05, 0x05 },
+ { 0x04, 0x08 }, { 0x05, 0x03 },
{ 0x04, 0x0e }, { 0x05, 0x00 },
- { 0x04, 0x0f }, { 0x05, 0x14 },
- { 0x04, 0x0b }, { 0x05, 0x8c },
+ { 0x04, 0x0f }, { 0x05, 0x37 },
+ { 0x04, 0x0b }, { 0x05, 0x78 },
{ 0x04, 0x00 }, { 0x05, 0x00 },
- { 0x04, 0x01 }, { 0x05, 0x07 },
- { 0x04, 0x02 }, { 0x05, 0x0f },
- { 0x04, 0x03 }, { 0x05, 0xa0 },
+ { 0x04, 0x01 }, { 0x05, 0x1e },
+ { 0x04, 0x02 }, { 0x05, 0x07 },
+ { 0x04, 0x03 }, { 0x05, 0xd0 },
{ 0x04, 0x09 }, { 0x05, 0x00 },
{ 0x04, 0x0a }, { 0x05, 0xff },
- { 0x04, 0x27 }, { 0x05, 0x64 },
+ { 0x04, 0x27 }, { 0x05, 0x00 },
{ 0x04, 0x28 }, { 0x05, 0x00 },
- { 0x04, 0x1e }, { 0x05, 0xff },
- { 0x04, 0x29 }, { 0x05, 0x0a },
- { 0x04, 0x32 }, { 0x05, 0x0a },
+ { 0x04, 0x1e }, { 0x05, 0x00 },
+ { 0x04, 0x29 }, { 0x05, 0x64 },
+ { 0x04, 0x32 }, { 0x05, 0x02 },
{ 0x04, 0x14 }, { 0x05, 0x02 },
{ 0x04, 0x04 }, { 0x05, 0x00 },
{ 0x04, 0x05 }, { 0x05, 0x22 },
* it collects the bit error count. The bit counters are initialized
* to 65535 here. This warrants that all of them will be quickly
* calculated when device gets locked. As TMCC is parsed, the values
- * can be adjusted later in the driver's code.
+ * will be adjusted later in the driver's code.
*/
{ 0x52, 0x01 }, /* Turn on BER before Viterbi */
{ 0x50, 0xa7 }, { 0x51, 0x00 },
{ 0x50, 0xae }, { 0x51, 0xff },
{ 0x50, 0xaf }, { 0x51, 0xff },
- { 0x5e, 0x00 }, /* Turn off BER after Viterbi */
- { 0x50, 0xdc }, { 0x51, 0x01 },
- { 0x50, 0xdd }, { 0x51, 0xf4 },
- { 0x50, 0xde }, { 0x51, 0x01 },
- { 0x50, 0xdf }, { 0x51, 0xf4 },
- { 0x50, 0xe0 }, { 0x51, 0x01 },
- { 0x50, 0xe1 }, { 0x51, 0xf4 },
- { 0x50, 0xb0 }, { 0x51, 0x07 },
- { 0x50, 0xb2 }, { 0x51, 0xff },
- { 0x50, 0xb3 }, { 0x51, 0xff },
- { 0x50, 0xb4 }, { 0x51, 0xff },
- { 0x50, 0xb5 }, { 0x51, 0xff },
- { 0x50, 0xb6 }, { 0x51, 0xff },
- { 0x50, 0xb7 }, { 0x51, 0xff },
- { 0x50, 0x50 }, { 0x51, 0x02 },
+ /*
+ * On this demod, post BER counts blocks. When the count reaches the
+ * value below, it collects the block error count. The block counters
+ * are initialized to 127 here. This warrants that all of them will be
+ * quickly calculated when device gets locked. As TMCC is parsed, the
+ * values will be adjusted later in the driver's code.
+ */
+ { 0x5e, 0x07 }, /* Turn on BER after Viterbi */
+ { 0x50, 0xdc }, { 0x51, 0x00 },
+ { 0x50, 0xdd }, { 0x51, 0x7f },
+ { 0x50, 0xde }, { 0x51, 0x00 },
+ { 0x50, 0xdf }, { 0x51, 0x7f },
+ { 0x50, 0xe0 }, { 0x51, 0x00 },
+ { 0x50, 0xe1 }, { 0x51, 0x7f },
+
+ /*
+ * On this demod, when the block count reaches the count below,
+ * it collects the block error count. The block counters are initialized
+ * to 127 here. This warrants that all of them will be quickly
+ * calculated when device gets locked. As TMCC is parsed, the values
+ * will be adjusted later in the driver's code.
+ */
+ { 0x50, 0xb0 }, { 0x51, 0x07 }, /* Enable PER */
+ { 0x50, 0xb2 }, { 0x51, 0x00 },
+ { 0x50, 0xb3 }, { 0x51, 0x7f },
+ { 0x50, 0xb4 }, { 0x51, 0x00 },
+ { 0x50, 0xb5 }, { 0x51, 0x7f },
+ { 0x50, 0xb6 }, { 0x51, 0x00 },
+ { 0x50, 0xb7 }, { 0x51, 0x7f },
+
+ { 0x50, 0x50 }, { 0x51, 0x02 }, /* MER manual mode */
{ 0x50, 0x51 }, { 0x51, 0x04 }, /* MER symbol 4 */
{ 0x45, 0x04 }, /* CN symbol 4 */
- { 0x48, 0x04 },
+ { 0x48, 0x04 }, /* CN manual mode */
+
{ 0x50, 0xd5 }, { 0x51, 0x01 }, /* Serial */
{ 0x50, 0xd6 }, { 0x51, 0x1f },
{ 0x50, 0xd2 }, { 0x51, 0x03 },
- { 0x50, 0xd7 }, { 0x51, 0x3f },
- { 0x28, 0x74 }, { 0x29, 0x00 }, { 0x28, 0x74 }, { 0x29, 0x40 },
- { 0x28, 0x46 }, { 0x29, 0x2c }, { 0x28, 0x46 }, { 0x29, 0x0c },
+ { 0x50, 0xd7 }, { 0x51, 0xbf },
+ { 0x28, 0x74 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0xff },
+ { 0x28, 0x46 }, { 0x29, 0x00 }, { 0x2a, 0x1a }, { 0x2b, 0x0c },
{ 0x04, 0x40 }, { 0x05, 0x00 },
- { 0x28, 0x00 }, { 0x29, 0x10 },
- { 0x28, 0x05 }, { 0x29, 0x02 },
+ { 0x28, 0x00 }, { 0x2b, 0x08 },
+ { 0x28, 0x05 }, { 0x2b, 0x00 },
{ 0x1c, 0x01 },
- { 0x28, 0x06 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x03 },
- { 0x28, 0x07 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0d },
- { 0x28, 0x08 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x02 },
- { 0x28, 0x09 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x01 },
- { 0x28, 0x0a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x21 },
- { 0x28, 0x0b }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x29 },
- { 0x28, 0x0c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x16 },
- { 0x28, 0x0d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x31 },
- { 0x28, 0x0e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0e },
- { 0x28, 0x0f }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x4e },
- { 0x28, 0x10 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x46 },
- { 0x28, 0x11 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0f },
- { 0x28, 0x12 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x56 },
- { 0x28, 0x13 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x35 },
- { 0x28, 0x14 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xbe },
- { 0x28, 0x15 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0x84 },
- { 0x28, 0x16 }, { 0x29, 0x00 }, { 0x2a, 0x03 }, { 0x2b, 0xee },
- { 0x28, 0x17 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x98 },
- { 0x28, 0x18 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x9f },
- { 0x28, 0x19 }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xb2 },
- { 0x28, 0x1a }, { 0x29, 0x00 }, { 0x2a, 0x06 }, { 0x2b, 0xc2 },
- { 0x28, 0x1b }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0x4a },
- { 0x28, 0x1c }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xbc },
- { 0x28, 0x1d }, { 0x29, 0x00 }, { 0x2a, 0x04 }, { 0x2b, 0xba },
- { 0x28, 0x1e }, { 0x29, 0x00 }, { 0x2a, 0x06 }, { 0x2b, 0x14 },
+ { 0x28, 0x06 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x1f },
+ { 0x28, 0x07 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x18 },
+ { 0x28, 0x08 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x12 },
+ { 0x28, 0x09 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x30 },
+ { 0x28, 0x0a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x37 },
+ { 0x28, 0x0b }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x02 },
+ { 0x28, 0x0c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x09 },
+ { 0x28, 0x0d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x06 },
+ { 0x28, 0x0e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x7b },
+ { 0x28, 0x0f }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x76 },
+ { 0x28, 0x10 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x7d },
+ { 0x28, 0x11 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x08 },
+ { 0x28, 0x12 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0b },
+ { 0x28, 0x13 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x00 },
+ { 0x28, 0x14 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xf2 },
+ { 0x28, 0x15 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xf3 },
+ { 0x28, 0x16 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x05 },
+ { 0x28, 0x17 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x16 },
+ { 0x28, 0x18 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0f },
+ { 0x28, 0x19 }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xef },
+ { 0x28, 0x1a }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xd8 },
+ { 0x28, 0x1b }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xf1 },
+ { 0x28, 0x1c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x3d },
+ { 0x28, 0x1d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x94 },
+ { 0x28, 0x1e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0xba },
{ 0x50, 0x1e }, { 0x51, 0x5d },
{ 0x50, 0x22 }, { 0x51, 0x00 },
{ 0x50, 0x23 }, { 0x51, 0xc8 },
{ 0x50, 0x26 }, { 0x51, 0x00 },
{ 0x50, 0x27 }, { 0x51, 0xc3 },
{ 0x50, 0x39 }, { 0x51, 0x02 },
+ { 0xec, 0x0f },
+ { 0xeb, 0x1f },
{ 0x28, 0x6a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x00 },
{ 0xd0, 0x00 },
};
{ 0x08, 0x00 },
};
-static struct regdata mb86a20s_vber_reset[] = {
- { 0x53, 0x00 }, /* VBER Counter reset */
+static struct regdata mb86a20s_per_ber_reset[] = {
+ { 0x53, 0x00 }, /* pre BER Counter reset */
{ 0x53, 0x07 },
-};
-static struct regdata mb86a20s_per_reset[] = {
+ { 0x5f, 0x00 }, /* post BER Counter reset */
+ { 0x5f, 0x07 },
+
{ 0x50, 0xb1 }, /* PER Counter reset */
{ 0x51, 0x07 },
{ 0x51, 0x00 },
dev_dbg(&state->i2c->dev, "%s: Status = 0x%02x (state = %d)\n",
__func__, *status, val);
- return 0;
+ return val;
}
static int mb86a20s_read_signal_strength(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int rc;
unsigned rf_max, rf_min, rf;
+ if (state->get_strength_time &&
+ (!time_after(jiffies, state->get_strength_time)))
+ return c->strength.stat[0].uvalue;
+
+ /* Reset its value if an error happen */
+ c->strength.stat[0].uvalue = 0;
+
/* Does a binary search to get RF strength */
rf_max = 0xfff;
rf_min = 0;
rc = mb86a20s_writereg(state, 0x04, 0x20);
if (rc < 0)
return rc;
- rc = mb86a20s_writereg(state, 0x04, rf);
+ rc = mb86a20s_writereg(state, 0x05, rf);
if (rc < 0)
return rc;
rf = (rf_max + rf_min) / 2;
/* Rescale it from 2^12 (4096) to 2^16 */
- rf <<= (16 - 12);
+ rf = rf << (16 - 12);
+ if (rf)
+ rf |= (1 << 12) - 1;
+
dev_dbg(&state->i2c->dev,
"%s: signal strength = %d (%d < RF=%d < %d)\n",
__func__, rf, rf_min, rf >> 4, rf_max);
- return rf;
+ c->strength.stat[0].uvalue = rf;
+ state->get_strength_time = jiffies +
+ msecs_to_jiffies(1000);
+ return 0;
}
} while (1);
-
- return 0;
}
static int mb86a20s_get_modulation(struct mb86a20s_state *state,
c->isdbt_sb_segment_count = 0;
}
+/*
+ * Estimates the bit rate using the per-segment bit rate given by
+ * ABNT/NBR 15601 spec (table 4).
+ */
+static u32 isdbt_rate[3][5][4] = {
+ { /* DQPSK/QPSK */
+ { 280850, 312060, 330420, 340430 }, /* 1/2 */
+ { 374470, 416080, 440560, 453910 }, /* 2/3 */
+ { 421280, 468090, 495630, 510650 }, /* 3/4 */
+ { 468090, 520100, 550700, 567390 }, /* 5/6 */
+ { 491500, 546110, 578230, 595760 }, /* 7/8 */
+ }, { /* QAM16 */
+ { 561710, 624130, 660840, 680870 }, /* 1/2 */
+ { 748950, 832170, 881120, 907820 }, /* 2/3 */
+ { 842570, 936190, 991260, 1021300 }, /* 3/4 */
+ { 936190, 1040210, 1101400, 1134780 }, /* 5/6 */
+ { 983000, 1092220, 1156470, 1191520 }, /* 7/8 */
+ }, { /* QAM64 */
+ { 842570, 936190, 991260, 1021300 }, /* 1/2 */
+ { 1123430, 1248260, 1321680, 1361740 }, /* 2/3 */
+ { 1263860, 1404290, 1486900, 1531950 }, /* 3/4 */
+ { 1404290, 1560320, 1652110, 1702170 }, /* 5/6 */
+ { 1474500, 1638340, 1734710, 1787280 }, /* 7/8 */
+ }
+};
+
+static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer,
+ u32 modulation, u32 forward_error_correction,
+ u32 interleaving,
+ u32 segment)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ u32 rate;
+ int mod, fec, guard;
+
+ /*
+ * If modulation/fec/interleaving is not detected, the default is
+ * to consider the lowest bit rate, to avoid taking too long time
+ * to get BER.
+ */
+ switch (modulation) {
+ case DQPSK:
+ case QPSK:
+ default:
+ mod = 0;
+ break;
+ case QAM_16:
+ mod = 1;
+ break;
+ case QAM_64:
+ mod = 2;
+ break;
+ }
+
+ switch (forward_error_correction) {
+ default:
+ case FEC_1_2:
+ case FEC_AUTO:
+ fec = 0;
+ break;
+ case FEC_2_3:
+ fec = 1;
+ break;
+ case FEC_3_4:
+ fec = 2;
+ break;
+ case FEC_5_6:
+ fec = 3;
+ break;
+ case FEC_7_8:
+ fec = 4;
+ break;
+ }
+
+ switch (interleaving) {
+ default:
+ case GUARD_INTERVAL_1_4:
+ guard = 0;
+ break;
+ case GUARD_INTERVAL_1_8:
+ guard = 1;
+ break;
+ case GUARD_INTERVAL_1_16:
+ guard = 2;
+ break;
+ case GUARD_INTERVAL_1_32:
+ guard = 3;
+ break;
+ }
+
+ /* Samples BER at BER_SAMPLING_RATE seconds */
+ rate = isdbt_rate[mod][fec][guard] * segment * BER_SAMPLING_RATE;
+
+ /* Avoids sampling too quickly or to overflow the register */
+ if (rate < 256)
+ rate = 256;
+ else if (rate > (1 << 24) - 1)
+ rate = (1 << 24) - 1;
+
+ dev_dbg(&state->i2c->dev,
+ "%s: layer %c bitrate: %d kbps; counter = %d (0x%06x)\n",
+ __func__, 'A' + layer,
+ segment * isdbt_rate[mod][fec][guard]/1000,
+ rate, rate);
+
+ state->estimated_rate[layer] = rate;
+}
+
static int mb86a20s_get_frontend(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int i, rc;
+ int layer, rc;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
/* Get per-layer data */
- for (i = 0; i < 3; i++) {
+ for (layer = 0; layer < NUM_LAYERS; layer++) {
dev_dbg(&state->i2c->dev, "%s: getting data for layer %c.\n",
- __func__, 'A' + i);
+ __func__, 'A' + layer);
- rc = mb86a20s_get_segment_count(state, i);
+ rc = mb86a20s_get_segment_count(state, layer);
if (rc < 0)
goto noperlayer_error;
- if (rc >= 0 && rc < 14)
- c->layer[i].segment_count = rc;
- else {
- c->layer[i].segment_count = 0;
+ if (rc >= 0 && rc < 14) {
+ c->layer[layer].segment_count = rc;
+ } else {
+ c->layer[layer].segment_count = 0;
+ state->estimated_rate[layer] = 0;
continue;
}
- c->isdbt_layer_enabled |= 1 << i;
- rc = mb86a20s_get_modulation(state, i);
+ c->isdbt_layer_enabled |= 1 << layer;
+ rc = mb86a20s_get_modulation(state, layer);
if (rc < 0)
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: modulation %d.\n",
__func__, rc);
- c->layer[i].modulation = rc;
- rc = mb86a20s_get_fec(state, i);
+ c->layer[layer].modulation = rc;
+ rc = mb86a20s_get_fec(state, layer);
if (rc < 0)
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: FEC %d.\n",
__func__, rc);
- c->layer[i].fec = rc;
- rc = mb86a20s_get_interleaving(state, i);
+ c->layer[layer].fec = rc;
+ rc = mb86a20s_get_interleaving(state, layer);
if (rc < 0)
goto noperlayer_error;
dev_dbg(&state->i2c->dev, "%s: interleaving %d.\n",
__func__, rc);
- c->layer[i].interleaving = rc;
+ c->layer[layer].interleaving = rc;
+ mb86a20s_layer_bitrate(fe, layer, c->layer[layer].modulation,
+ c->layer[layer].fec,
+ c->layer[layer].interleaving,
+ c->layer[layer].segment_count);
}
rc = mb86a20s_writereg(state, 0x6d, 0x84);
/* Reset the counters, if the channel changed */
if (state->last_frequency != c->frequency) {
- memset(&c->strength, 0, sizeof(c->strength));
memset(&c->cnr, 0, sizeof(c->cnr));
memset(&c->pre_bit_error, 0, sizeof(c->pre_bit_error));
memset(&c->pre_bit_count, 0, sizeof(c->pre_bit_count));
+ memset(&c->post_bit_error, 0, sizeof(c->post_bit_error));
+ memset(&c->post_bit_count, 0, sizeof(c->post_bit_count));
memset(&c->block_error, 0, sizeof(c->block_error));
memset(&c->block_count, 0, sizeof(c->block_count));
/* Clear status for most stats */
- /* BER counter reset */
- rc = mb86a20s_writeregdata(state, mb86a20s_vber_reset);
- if (rc < 0)
- goto err;
-
- /* MER, PER counter reset */
- rc = mb86a20s_writeregdata(state, mb86a20s_per_reset);
+ /* BER/PER counter reset */
+ rc = mb86a20s_writeregdata(state, mb86a20s_per_ber_reset);
if (rc < 0)
goto err;
return rc;
}
-static int mb86a20s_get_ber_before_vterbi(struct dvb_frontend *fe,
- unsigned layer,
- u32 *error, u32 *count)
+static int mb86a20s_get_pre_ber(struct dvb_frontend *fe,
+ unsigned layer,
+ u32 *error, u32 *count)
{
struct mb86a20s_state *state = fe->demodulator_priv;
- int rc;
+ int rc, val;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
- if (layer >= 3)
+ if (layer >= NUM_LAYERS)
return -EINVAL;
/* Check if the BER measures are already available */
/* Check if data is available for that layer */
if (!(rc & (1 << layer))) {
dev_dbg(&state->i2c->dev,
- "%s: BER for layer %c is not available yet.\n",
+ "%s: preBER for layer %c is not available yet.\n",
__func__, 'A' + layer);
return -EBUSY;
}
__func__, 'A' + layer, *count);
+ /*
+ * As we get TMCC data from the frontend, we can better estimate the
+ * BER bit counters, in order to do the BER measure during a longer
+ * time. Use those data, if available, to update the bit count
+ * measure.
+ */
+
+ if (state->estimated_rate[layer]
+ && state->estimated_rate[layer] != *count) {
+ dev_dbg(&state->i2c->dev,
+ "%s: updating layer %c preBER counter to %d.\n",
+ __func__, 'A' + layer, state->estimated_rate[layer]);
+
+ /* Turn off BER before Viterbi */
+ rc = mb86a20s_writereg(state, 0x52, 0x00);
+
+ /* Update counter for this layer */
+ rc = mb86a20s_writereg(state, 0x50, 0xa7 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51,
+ state->estimated_rate[layer] >> 16);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x50, 0xa8 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51,
+ state->estimated_rate[layer] >> 8);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x50, 0xa9 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51,
+ state->estimated_rate[layer]);
+ if (rc < 0)
+ return rc;
+
+ /* Turn on BER before Viterbi */
+ rc = mb86a20s_writereg(state, 0x52, 0x01);
+
+ /* Reset all preBER counters */
+ rc = mb86a20s_writereg(state, 0x53, 0x00);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x53, 0x07);
+ } else {
+ /* Reset counter to collect new data */
+ rc = mb86a20s_readreg(state, 0x53);
+ if (rc < 0)
+ return rc;
+ val = rc;
+ rc = mb86a20s_writereg(state, 0x53, val & ~(1 << layer));
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x53, val | (1 << layer));
+ }
+
+ return rc;
+}
+
+static int mb86a20s_get_post_ber(struct dvb_frontend *fe,
+ unsigned layer,
+ u32 *error, u32 *count)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ u32 counter, collect_rate;
+ int rc, val;
+
+ dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
+
+ if (layer >= NUM_LAYERS)
+ return -EINVAL;
+
+ /* Check if the BER measures are already available */
+ rc = mb86a20s_readreg(state, 0x60);
+ if (rc < 0)
+ return rc;
+
+ /* Check if data is available for that layer */
+ if (!(rc & (1 << layer))) {
+ dev_dbg(&state->i2c->dev,
+ "%s: post BER for layer %c is not available yet.\n",
+ __func__, 'A' + layer);
+ return -EBUSY;
+ }
+
+ /* Read Bit Error Count */
+ rc = mb86a20s_readreg(state, 0x64 + layer * 3);
+ if (rc < 0)
+ return rc;
+ *error = rc << 16;
+ rc = mb86a20s_readreg(state, 0x65 + layer * 3);
+ if (rc < 0)
+ return rc;
+ *error |= rc << 8;
+ rc = mb86a20s_readreg(state, 0x66 + layer * 3);
+ if (rc < 0)
+ return rc;
+ *error |= rc;
+
+ dev_dbg(&state->i2c->dev,
+ "%s: post bit error for layer %c: %d.\n",
+ __func__, 'A' + layer, *error);
+
+ /* Read Bit Count */
+ rc = mb86a20s_writereg(state, 0x50, 0xdc + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ counter = rc << 8;
+ rc = mb86a20s_writereg(state, 0x50, 0xdd + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ counter |= rc;
+ *count = counter * 204 * 8;
+
+ dev_dbg(&state->i2c->dev,
+ "%s: post bit count for layer %c: %d.\n",
+ __func__, 'A' + layer, *count);
+
+ /*
+ * As we get TMCC data from the frontend, we can better estimate the
+ * BER bit counters, in order to do the BER measure during a longer
+ * time. Use those data, if available, to update the bit count
+ * measure.
+ */
+
+ if (!state->estimated_rate[layer])
+ goto reset_measurement;
+
+ collect_rate = state->estimated_rate[layer] / 204 / 8;
+ if (collect_rate < 32)
+ collect_rate = 32;
+ if (collect_rate > 65535)
+ collect_rate = 65535;
+ if (collect_rate != counter) {
+ dev_dbg(&state->i2c->dev,
+ "%s: updating postBER counter on layer %c to %d.\n",
+ __func__, 'A' + layer, collect_rate);
+
+ /* Turn off BER after Viterbi */
+ rc = mb86a20s_writereg(state, 0x5e, 0x00);
+
+ /* Update counter for this layer */
+ rc = mb86a20s_writereg(state, 0x50, 0xdc + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, collect_rate >> 8);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x50, 0xdd + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, collect_rate & 0xff);
+ if (rc < 0)
+ return rc;
+
+ /* Turn on BER after Viterbi */
+ rc = mb86a20s_writereg(state, 0x5e, 0x07);
+
+ /* Reset all preBER counters */
+ rc = mb86a20s_writereg(state, 0x5f, 0x00);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x5f, 0x07);
+
+ return rc;
+ }
+
+reset_measurement:
/* Reset counter to collect new data */
- rc = mb86a20s_writereg(state, 0x53, 0x07 & ~(1 << layer));
+ rc = mb86a20s_readreg(state, 0x5f);
+ if (rc < 0)
+ return rc;
+ val = rc;
+ rc = mb86a20s_writereg(state, 0x5f, val & ~(1 << layer));
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x5f, val | (1 << layer));
+
+ return rc;
+}
+
+static int mb86a20s_get_blk_error(struct dvb_frontend *fe,
+ unsigned layer,
+ u32 *error, u32 *count)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ int rc, val;
+ u32 collect_rate;
+ dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
+
+ if (layer >= NUM_LAYERS)
+ return -EINVAL;
+
+ /* Check if the PER measures are already available */
+ rc = mb86a20s_writereg(state, 0x50, 0xb8);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+
+ /* Check if data is available for that layer */
+
+ if (!(rc & (1 << layer))) {
+ dev_dbg(&state->i2c->dev,
+ "%s: block counts for layer %c aren't available yet.\n",
+ __func__, 'A' + layer);
+ return -EBUSY;
+ }
+
+ /* Read Packet error Count */
+ rc = mb86a20s_writereg(state, 0x50, 0xb9 + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ *error = rc << 8;
+ rc = mb86a20s_writereg(state, 0x50, 0xba + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ *error |= rc;
+ dev_dbg(&state->i2c->dev, "%s: block error for layer %c: %d.\n",
+ __func__, 'A' + layer, *error);
+
+ /* Read Bit Count */
+ rc = mb86a20s_writereg(state, 0x50, 0xb2 + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ *count = rc << 8;
+ rc = mb86a20s_writereg(state, 0x50, 0xb3 + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ *count |= rc;
+
+ dev_dbg(&state->i2c->dev,
+ "%s: block count for layer %c: %d.\n",
+ __func__, 'A' + layer, *count);
+
+ /*
+ * As we get TMCC data from the frontend, we can better estimate the
+ * BER bit counters, in order to do the BER measure during a longer
+ * time. Use those data, if available, to update the bit count
+ * measure.
+ */
+
+ if (!state->estimated_rate[layer])
+ goto reset_measurement;
+
+ collect_rate = state->estimated_rate[layer] / 204 / 8;
+ if (collect_rate < 32)
+ collect_rate = 32;
+ if (collect_rate > 65535)
+ collect_rate = 65535;
+
+ if (collect_rate != *count) {
+ dev_dbg(&state->i2c->dev,
+ "%s: updating PER counter on layer %c to %d.\n",
+ __func__, 'A' + layer, collect_rate);
+
+ /* Stop PER measurement */
+ rc = mb86a20s_writereg(state, 0x50, 0xb0);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, 0x00);
+ if (rc < 0)
+ return rc;
+
+ /* Update this layer's counter */
+ rc = mb86a20s_writereg(state, 0x50, 0xb2 + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, collect_rate >> 8);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x50, 0xb3 + layer * 2);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, collect_rate & 0xff);
+ if (rc < 0)
+ return rc;
+
+ /* start PER measurement */
+ rc = mb86a20s_writereg(state, 0x50, 0xb0);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, 0x07);
+ if (rc < 0)
+ return rc;
+
+ /* Reset all counters to collect new data */
+ rc = mb86a20s_writereg(state, 0x50, 0xb1);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, 0x07);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, 0x00);
+
+ return rc;
+ }
+
+reset_measurement:
+ /* Reset counter to collect new data */
+ rc = mb86a20s_writereg(state, 0x50, 0xb1);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ val = rc;
+ rc = mb86a20s_writereg(state, 0x51, val | (1 << layer));
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, val & ~(1 << layer));
+
+ return rc;
+}
+
+struct linear_segments {
+ unsigned x, y;
+};
+
+/*
+ * All tables below return a dB/1000 measurement
+ */
+
+static struct linear_segments cnr_to_db_table[] = {
+ { 19648, 0},
+ { 18187, 1000},
+ { 16534, 2000},
+ { 14823, 3000},
+ { 13161, 4000},
+ { 11622, 5000},
+ { 10279, 6000},
+ { 9089, 7000},
+ { 8042, 8000},
+ { 7137, 9000},
+ { 6342, 10000},
+ { 5641, 11000},
+ { 5030, 12000},
+ { 4474, 13000},
+ { 3988, 14000},
+ { 3556, 15000},
+ { 3180, 16000},
+ { 2841, 17000},
+ { 2541, 18000},
+ { 2276, 19000},
+ { 2038, 20000},
+ { 1800, 21000},
+ { 1625, 22000},
+ { 1462, 23000},
+ { 1324, 24000},
+ { 1175, 25000},
+ { 1063, 26000},
+ { 980, 27000},
+ { 907, 28000},
+ { 840, 29000},
+ { 788, 30000},
+};
+
+static struct linear_segments cnr_64qam_table[] = {
+ { 3922688, 0},
+ { 3920384, 1000},
+ { 3902720, 2000},
+ { 3894784, 3000},
+ { 3882496, 4000},
+ { 3872768, 5000},
+ { 3858944, 6000},
+ { 3851520, 7000},
+ { 3838976, 8000},
+ { 3829248, 9000},
+ { 3818240, 10000},
+ { 3806976, 11000},
+ { 3791872, 12000},
+ { 3767040, 13000},
+ { 3720960, 14000},
+ { 3637504, 15000},
+ { 3498496, 16000},
+ { 3296000, 17000},
+ { 3031040, 18000},
+ { 2715392, 19000},
+ { 2362624, 20000},
+ { 1963264, 21000},
+ { 1649664, 22000},
+ { 1366784, 23000},
+ { 1120768, 24000},
+ { 890880, 25000},
+ { 723456, 26000},
+ { 612096, 27000},
+ { 518912, 28000},
+ { 448256, 29000},
+ { 388864, 30000},
+};
+
+static struct linear_segments cnr_16qam_table[] = {
+ { 5314816, 0},
+ { 5219072, 1000},
+ { 5118720, 2000},
+ { 4998912, 3000},
+ { 4875520, 4000},
+ { 4736000, 5000},
+ { 4604160, 6000},
+ { 4458752, 7000},
+ { 4300288, 8000},
+ { 4092928, 9000},
+ { 3836160, 10000},
+ { 3521024, 11000},
+ { 3155968, 12000},
+ { 2756864, 13000},
+ { 2347008, 14000},
+ { 1955072, 15000},
+ { 1593600, 16000},
+ { 1297920, 17000},
+ { 1043968, 18000},
+ { 839680, 19000},
+ { 672256, 20000},
+ { 523008, 21000},
+ { 424704, 22000},
+ { 345088, 23000},
+ { 280064, 24000},
+ { 221440, 25000},
+ { 179712, 26000},
+ { 151040, 27000},
+ { 128512, 28000},
+ { 110080, 29000},
+ { 95744, 30000},
+};
+
+struct linear_segments cnr_qpsk_table[] = {
+ { 2834176, 0},
+ { 2683648, 1000},
+ { 2536960, 2000},
+ { 2391808, 3000},
+ { 2133248, 4000},
+ { 1906176, 5000},
+ { 1666560, 6000},
+ { 1422080, 7000},
+ { 1189632, 8000},
+ { 976384, 9000},
+ { 790272, 10000},
+ { 633344, 11000},
+ { 505600, 12000},
+ { 402944, 13000},
+ { 320768, 14000},
+ { 255488, 15000},
+ { 204032, 16000},
+ { 163072, 17000},
+ { 130304, 18000},
+ { 105216, 19000},
+ { 83456, 20000},
+ { 65024, 21000},
+ { 52480, 22000},
+ { 42752, 23000},
+ { 34560, 24000},
+ { 27136, 25000},
+ { 22016, 26000},
+ { 18432, 27000},
+ { 15616, 28000},
+ { 13312, 29000},
+ { 11520, 30000},
+};
+
+static u32 interpolate_value(u32 value, struct linear_segments *segments,
+ unsigned len)
+{
+ u64 tmp64;
+ u32 dx, dy;
+ int i, ret;
+
+ if (value >= segments[0].x)
+ return segments[0].y;
+ if (value < segments[len-1].x)
+ return segments[len-1].y;
+
+ for (i = 1; i < len - 1; i++) {
+ /* If value is identical, no need to interpolate */
+ if (value == segments[i].x)
+ return segments[i].y;
+ if (value > segments[i].x)
+ break;
+ }
+
+ /* Linear interpolation between the two (x,y) points */
+ dy = segments[i].y - segments[i - 1].y;
+ dx = segments[i - 1].x - segments[i].x;
+ tmp64 = value - segments[i].x;
+ tmp64 *= dy;
+ do_div(tmp64, dx);
+ ret = segments[i].y - tmp64;
+
+ return ret;
+}
+
+static int mb86a20s_get_main_CNR(struct dvb_frontend *fe)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u32 cnr_linear, cnr;
+ int rc, val;
+
+ /* Check if CNR is available */
+ rc = mb86a20s_readreg(state, 0x45);
+ if (rc < 0)
+ return rc;
+
+ if (!(rc & 0x40)) {
+ dev_dbg(&state->i2c->dev, "%s: CNR is not available yet.\n",
+ __func__);
+ return -EBUSY;
+ }
+ val = rc;
+
+ rc = mb86a20s_readreg(state, 0x46);
+ if (rc < 0)
+ return rc;
+ cnr_linear = rc << 8;
+
+ rc = mb86a20s_readreg(state, 0x46);
+ if (rc < 0)
+ return rc;
+ cnr_linear |= rc;
+
+ cnr = interpolate_value(cnr_linear,
+ cnr_to_db_table, ARRAY_SIZE(cnr_to_db_table));
+
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ c->cnr.stat[0].svalue = cnr;
+
+ dev_dbg(&state->i2c->dev, "%s: CNR is %d.%03d dB (%d)\n",
+ __func__, cnr / 1000, cnr % 1000, cnr_linear);
+
+ /* CNR counter reset */
+ rc = mb86a20s_writereg(state, 0x45, val | 0x10);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x45, val & 0x6f);
+
+ return rc;
+}
+
+static int mb86a20s_get_blk_error_layer_CNR(struct dvb_frontend *fe)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u32 mer, cnr;
+ int rc, val, layer;
+ struct linear_segments *segs;
+ unsigned segs_len;
+
+ dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
+
+ /* Check if the measures are already available */
+ rc = mb86a20s_writereg(state, 0x50, 0x5b);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+
+ /* Check if data is available */
+ if (!(rc & 0x01)) {
+ dev_dbg(&state->i2c->dev,
+ "%s: MER measures aren't available yet.\n", __func__);
+ return -EBUSY;
+ }
+
+ /* Read all layers */
+ for (layer = 0; layer < NUM_LAYERS; layer++) {
+ if (!(c->isdbt_layer_enabled & (1 << layer))) {
+ c->cnr.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ continue;
+ }
+
+ rc = mb86a20s_writereg(state, 0x50, 0x52 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ mer = rc << 16;
+ rc = mb86a20s_writereg(state, 0x50, 0x53 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ mer |= rc << 8;
+ rc = mb86a20s_writereg(state, 0x50, 0x54 + layer * 3);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ mer |= rc;
+
+ switch (c->layer[layer].modulation) {
+ case DQPSK:
+ case QPSK:
+ segs = cnr_qpsk_table;
+ segs_len = ARRAY_SIZE(cnr_qpsk_table);
+ break;
+ case QAM_16:
+ segs = cnr_16qam_table;
+ segs_len = ARRAY_SIZE(cnr_16qam_table);
+ break;
+ default:
+ case QAM_64:
+ segs = cnr_64qam_table;
+ segs_len = ARRAY_SIZE(cnr_64qam_table);
+ break;
+ }
+ cnr = interpolate_value(mer, segs, segs_len);
+
+ c->cnr.stat[1 + layer].scale = FE_SCALE_DECIBEL;
+ c->cnr.stat[1 + layer].svalue = cnr;
+
+ dev_dbg(&state->i2c->dev,
+ "%s: CNR for layer %c is %d.%03d dB (MER = %d).\n",
+ __func__, 'A' + layer, cnr / 1000, cnr % 1000, mer);
+
+ }
+
+ /* Start a new MER measurement */
+ /* MER counter reset */
+ rc = mb86a20s_writereg(state, 0x50, 0x50);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_readreg(state, 0x51);
+ if (rc < 0)
+ return rc;
+ val = rc;
+
+ rc = mb86a20s_writereg(state, 0x51, val | 0x01);
+ if (rc < 0)
+ return rc;
+ rc = mb86a20s_writereg(state, 0x51, val & 0x06);
if (rc < 0)
return rc;
- rc = mb86a20s_writereg(state, 0x53, 0x07);
return 0;
}
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int i;
+ int layer;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
c->strength.len = 1;
/* Per-layer stats - 3 layers + global */
- c->cnr.len = 4;
- c->pre_bit_error.len = 4;
- c->pre_bit_count.len = 4;
- c->block_error.len = 4;
- c->block_count.len = 4;
+ c->cnr.len = NUM_LAYERS + 1;
+ c->pre_bit_error.len = NUM_LAYERS + 1;
+ c->pre_bit_count.len = NUM_LAYERS + 1;
+ c->post_bit_error.len = NUM_LAYERS + 1;
+ c->post_bit_count.len = NUM_LAYERS + 1;
+ c->block_error.len = NUM_LAYERS + 1;
+ c->block_count.len = NUM_LAYERS + 1;
/* Signal is always available */
c->strength.stat[0].scale = FE_SCALE_RELATIVE;
c->strength.stat[0].uvalue = 0;
/* Put all of them at FE_SCALE_NOT_AVAILABLE */
- for (i = 0; i < 4; i++) {
- c->cnr.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
- c->pre_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
- c->pre_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
- c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
- c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
+ for (layer = 0; layer < NUM_LAYERS + 1; layer++) {
+ c->cnr.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->pre_bit_error.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->pre_bit_count.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_error.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_count.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_error.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_count.stat[layer].scale = FE_SCALE_NOT_AVAILABLE;
}
}
-static int mb86a20s_get_stats(struct dvb_frontend *fe)
+static int mb86a20s_get_stats(struct dvb_frontend *fe, int status_nr)
{
struct mb86a20s_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int rc = 0, i;
+ int rc = 0, layer;
u32 bit_error = 0, bit_count = 0;
u32 t_pre_bit_error = 0, t_pre_bit_count = 0;
- int active_layers = 0, ber_layers = 0;
+ u32 t_post_bit_error = 0, t_post_bit_count = 0;
+ u32 block_error = 0, block_count = 0;
+ u32 t_block_error = 0, t_block_count = 0;
+ int active_layers = 0, pre_ber_layers = 0, post_ber_layers = 0;
+ int per_layers = 0;
+
+ dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
+
+ mb86a20s_get_main_CNR(fe);
/* Get per-layer stats */
- for (i = 0; i < 3; i++) {
- if (c->isdbt_layer_enabled & (1 << i)) {
+ mb86a20s_get_blk_error_layer_CNR(fe);
+
+ /*
+ * At state 7, only CNR is available
+ * For BER measures, state=9 is required
+ * FIXME: we may get MER measures with state=8
+ */
+ if (status_nr < 9)
+ return 0;
+
+ for (layer = 0; layer < NUM_LAYERS; layer++) {
+ if (c->isdbt_layer_enabled & (1 << layer)) {
/* Layer is active and has rc segments */
active_layers++;
- /* Read per-layer BER */
/* Handle BER before vterbi */
- rc = mb86a20s_get_ber_before_vterbi(fe, i,
- &bit_error,
- &bit_count);
+ rc = mb86a20s_get_pre_ber(fe, layer,
+ &bit_error, &bit_count);
+ if (rc >= 0) {
+ c->pre_bit_error.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->pre_bit_error.stat[1 + layer].uvalue += bit_error;
+ c->pre_bit_count.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->pre_bit_count.stat[1 + layer].uvalue += bit_count;
+ } else if (rc != -EBUSY) {
+ /*
+ * If an I/O error happened,
+ * measures are now unavailable
+ */
+ c->pre_bit_error.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->pre_bit_count.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ dev_err(&state->i2c->dev,
+ "%s: Can't get BER for layer %c (error %d).\n",
+ __func__, 'A' + layer, rc);
+ }
+ if (c->block_error.stat[1 + layer].scale != FE_SCALE_NOT_AVAILABLE)
+ pre_ber_layers++;
+
+ /* Handle BER post vterbi */
+ rc = mb86a20s_get_post_ber(fe, layer,
+ &bit_error, &bit_count);
if (rc >= 0) {
- c->pre_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER;
- c->pre_bit_error.stat[1 + i].uvalue += bit_error;
- c->pre_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER;
- c->pre_bit_count.stat[1 + i].uvalue += bit_count;
+ c->post_bit_error.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[1 + layer].uvalue += bit_error;
+ c->post_bit_count.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->post_bit_count.stat[1 + layer].uvalue += bit_count;
} else if (rc != -EBUSY) {
/*
* If an I/O error happened,
* measures are now unavailable
*/
- c->pre_bit_error.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
- c->pre_bit_count.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_error.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_count.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
dev_err(&state->i2c->dev,
"%s: Can't get BER for layer %c (error %d).\n",
- __func__, 'A' + i, rc);
+ __func__, 'A' + layer, rc);
}
+ if (c->block_error.stat[1 + layer].scale != FE_SCALE_NOT_AVAILABLE)
+ post_ber_layers++;
- if (c->block_error.stat[1 + i].scale != FE_SCALE_NOT_AVAILABLE)
- ber_layers++;
+ /* Handle Block errors for PER/UCB reports */
+ rc = mb86a20s_get_blk_error(fe, layer,
+ &block_error,
+ &block_count);
+ if (rc >= 0) {
+ c->block_error.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->block_error.stat[1 + layer].uvalue += block_error;
+ c->block_count.stat[1 + layer].scale = FE_SCALE_COUNTER;
+ c->block_count.stat[1 + layer].uvalue += block_count;
+ } else if (rc != -EBUSY) {
+ /*
+ * If an I/O error happened,
+ * measures are now unavailable
+ */
+ c->block_error.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_count.stat[1 + layer].scale = FE_SCALE_NOT_AVAILABLE;
+ dev_err(&state->i2c->dev,
+ "%s: Can't get PER for layer %c (error %d).\n",
+ __func__, 'A' + layer, rc);
+
+ }
+ if (c->block_error.stat[1 + layer].scale != FE_SCALE_NOT_AVAILABLE)
+ per_layers++;
+
+ /* Update total preBER */
+ t_pre_bit_error += c->pre_bit_error.stat[1 + layer].uvalue;
+ t_pre_bit_count += c->pre_bit_count.stat[1 + layer].uvalue;
- /* Update total BER */
- t_pre_bit_error += c->pre_bit_error.stat[1 + i].uvalue;
- t_pre_bit_count += c->pre_bit_count.stat[1 + i].uvalue;
+ /* Update total postBER */
+ t_post_bit_error += c->post_bit_error.stat[1 + layer].uvalue;
+ t_post_bit_count += c->post_bit_count.stat[1 + layer].uvalue;
+
+ /* Update total PER */
+ t_block_error += c->block_error.stat[1 + layer].uvalue;
+ t_block_count += c->block_count.stat[1 + layer].uvalue;
}
}
* Start showing global count if at least one error count is
* available.
*/
- if (ber_layers) {
+ if (pre_ber_layers) {
/*
* At least one per-layer BER measure was read. We can now
* calculate the total BER
c->pre_bit_error.stat[0].uvalue = t_pre_bit_error;
c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER;
c->pre_bit_count.stat[0].uvalue = t_pre_bit_count;
+ } else {
+ c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+ }
+
+ /*
+ * Start showing global count if at least one error count is
+ * available.
+ */
+ if (post_ber_layers) {
+ /*
+ * At least one per-layer BER measure was read. We can now
+ * calculate the total BER
+ *
+ * Total Bit Error/Count is calculated as the sum of the
+ * bit errors on all active layers.
+ */
+ c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[0].uvalue = t_post_bit_error;
+ c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_count.stat[0].uvalue = t_post_bit_count;
+ } else {
+ c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+ }
+
+ if (per_layers) {
+ /*
+ * At least one per-layer UCB measure was read. We can now
+ * calculate the total UCB
+ *
+ * Total block Error/Count is calculated as the sum of the
+ * block errors on all active layers.
+ */
+ c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->block_error.stat[0].uvalue = t_block_error;
+ c->block_count.stat[0].scale = FE_SCALE_COUNTER;
+ c->block_count.stat[0].uvalue = t_block_count;
+ } else {
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_count.stat[0].scale = FE_SCALE_COUNTER;
}
return rc;
static int mb86a20s_initfe(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
+ u64 pll;
+ u32 fclk;
int rc;
- u8 regD5 = 1;
+ u8 regD5 = 1, reg71, reg09 = 0x3a;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
fe->ops.i2c_gate_ctrl(fe, 0);
/* Initialize the frontend */
- rc = mb86a20s_writeregdata(state, mb86a20s_init);
+ rc = mb86a20s_writeregdata(state, mb86a20s_init1);
+ if (rc < 0)
+ goto err;
+
+ if (!state->inversion)
+ reg09 |= 0x04;
+ rc = mb86a20s_writereg(state, 0x09, reg09);
+ if (rc < 0)
+ goto err;
+ if (!state->bw)
+ reg71 = 1;
+ else
+ reg71 = 0;
+ rc = mb86a20s_writereg(state, 0x39, reg71);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x71, state->bw);
+ if (rc < 0)
+ goto err;
+ if (state->subchannel) {
+ rc = mb86a20s_writereg(state, 0x44, state->subchannel);
+ if (rc < 0)
+ goto err;
+ }
+
+ fclk = state->config->fclk;
+ if (!fclk)
+ fclk = 32571428;
+
+ /* Adjust IF frequency to match tuner */
+ if (fe->ops.tuner_ops.get_if_frequency)
+ fe->ops.tuner_ops.get_if_frequency(fe, &state->if_freq);
+
+ if (!state->if_freq)
+ state->if_freq = 3300000;
+
+ pll = (((u64)1) << 34) * state->if_freq;
+ do_div(pll, 63 * fclk);
+ pll = (1 << 25) - pll;
+ rc = mb86a20s_writereg(state, 0x28, 0x2a);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x29, (pll >> 16) & 0xff);
if (rc < 0)
goto err;
+ rc = mb86a20s_writereg(state, 0x2a, (pll >> 8) & 0xff);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x2b, pll & 0xff);
+ if (rc < 0)
+ goto err;
+ dev_dbg(&state->i2c->dev, "%s: fclk=%d, IF=%d, clock reg=0x%06llx\n",
+ __func__, fclk, state->if_freq, (long long)pll);
+
+ /* pll = freq[Hz] * 2^24/10^6 / 16.285714286 */
+ pll = state->if_freq * 1677721600L;
+ do_div(pll, 1628571429L);
+ rc = mb86a20s_writereg(state, 0x28, 0x20);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x29, (pll >> 16) & 0xff);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x2a, (pll >> 8) & 0xff);
+ if (rc < 0)
+ goto err;
+ rc = mb86a20s_writereg(state, 0x2b, pll & 0xff);
+ if (rc < 0)
+ goto err;
+ dev_dbg(&state->i2c->dev, "%s: IF=%d, IF reg=0x%06llx\n",
+ __func__, state->if_freq, (long long)pll);
if (!state->config->is_serial) {
regD5 &= ~1;
goto err;
}
+ rc = mb86a20s_writeregdata(state, mb86a20s_init2);
+ if (rc < 0)
+ goto err;
+
+
err:
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
static int mb86a20s_set_frontend(struct dvb_frontend *fe)
{
struct mb86a20s_state *state = fe->demodulator_priv;
- int rc;
-#if 0
- /*
- * FIXME: Properly implement the set frontend properties
- */
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
-#endif
+ int rc, if_freq;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
+ if (!c->isdbt_layer_enabled)
+ c->isdbt_layer_enabled = 7;
+
+ if (c->isdbt_layer_enabled == 1)
+ state->bw = MB86A20S_1SEG;
+ else if (c->isdbt_partial_reception)
+ state->bw = MB86A20S_13SEG_PARTIAL;
+ else
+ state->bw = MB86A20S_13SEG;
+
+ if (c->inversion == INVERSION_ON)
+ state->inversion = true;
+ else
+ state->inversion = false;
+
+ if (!c->isdbt_sb_mode) {
+ state->subchannel = 0;
+ } else {
+ if (c->isdbt_sb_subchannel >= ARRAY_SIZE(mb86a20s_subchannel))
+ c->isdbt_sb_subchannel = 0;
+
+ state->subchannel = mb86a20s_subchannel[c->isdbt_sb_subchannel];
+ }
+
/*
* Gate should already be opened, but it doesn't hurt to
* double-check
fe->ops.i2c_gate_ctrl(fe, 1);
fe->ops.tuner_ops.set_params(fe);
+ if (fe->ops.tuner_ops.get_if_frequency)
+ fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
+
/*
* Make it more reliable: if, for some reason, the initial
* device initialization doesn't happen, initialize it when
* the agc callback logic is not called during DVB attach time,
* causing mb86a20s to not be initialized with Kworld SBTVD.
* So, this hack is needed, in order to make Kworld SBTVD to work.
+ *
+ * It is also needed to change the IF after the initial init.
+ *
+ * HACK: Always init the frontend when set_frontend is called:
+ * it was noticed that, on some devices, it fails to lock on a
+ * different channel. So, it is better to reset everything, even
+ * wasting some time, than to loose channel lock.
*/
- if (state->need_init)
- mb86a20s_initfe(fe);
+ mb86a20s_initfe(fe);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
+
rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);
mb86a20s_reset_counters(fe);
+ mb86a20s_stats_not_ready(fe);
+
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
fe_status_t *status)
{
struct mb86a20s_state *state = fe->demodulator_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int rc;
+ int rc, status_nr;
dev_dbg(&state->i2c->dev, "%s called.\n", __func__);
fe->ops.i2c_gate_ctrl(fe, 0);
/* Get lock */
- rc = mb86a20s_read_status(fe, status);
- if (!(*status & FE_HAS_LOCK)) {
+ status_nr = mb86a20s_read_status(fe, status);
+ if (status_nr < 7) {
mb86a20s_stats_not_ready(fe);
mb86a20s_reset_frontend_cache(fe);
}
- if (rc < 0) {
+ if (status_nr < 0) {
dev_err(&state->i2c->dev,
"%s: Can't read frontend lock status\n", __func__);
goto error;
rc = 0; /* Status is OK */
goto error;
}
- /* Fill signal strength */
- c->strength.stat[0].uvalue = rc;
- if (*status & FE_HAS_LOCK) {
+ if (status_nr >= 7) {
/* Get TMCC info*/
rc = mb86a20s_get_frontend(fe);
if (rc < 0) {
}
/* Get statistics */
- rc = mb86a20s_get_stats(fe);
+ rc = mb86a20s_get_stats(fe, status_nr);
if (rc < 0 && rc != -EBUSY) {
dev_err(&state->i2c->dev,
"%s: Can't get FE statistics.\n", __func__);
/* Use dib8000 values per default */
.info = {
.name = "Fujitsu mb86A20s",
- .caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER |
+ .caps = FE_CAN_RECOVER |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
projects / mirror_ubuntu-artful-kernel.git / blobdiff