e9hack wrote:
> Hi,
>
> the attached patch enables/fixes the BER/UNC counting for the stv0297
> frontend, which is used by the TT-C2300 DVB-C card.
> @@ -340,11 +343,13 @@ static int stv0297_read_ber(struct dvb_f
> struct stv0297_state *state = fe->demodulator_priv;
> u8 BER[3];
>
>- stv0297_writereg(state, 0xA0, 0x80); // Start Counting bit errors
>for 4096 Bytes
>- mdelay(25); // Hopefully got 4096 Bytes
> stv0297_readregs(state, 0xA0, BER, 3);
>- mdelay(25);
>- *ber = (BER[2] << 8 | BER[1]) / (8 * 4096);
>+ if (!(BER[0] & 0x80)) {
>+ state->last_ber = BER[2] << 8 | BER[1];
>+ stv0297_writereg_mask(state, 0xA0, 0x80, 0x80);
>+ }
>+
>+ *ber = state->last_ber;
Hm - comparing the old code and the new one:
Is BER[] the bit error *counter* or the bit error *rate*?
If it is a counter there is something missing.
>@@ -375,9 +380,14 @@ static int stv0297_read_ucblocks(struct
> static int stv0297_read_ucblocks(struct dvb_frontend *fe, u32 * ucblocks)
> {
> struct stv0297_state *state = fe->demodulator_priv;
>+
>+ stv0297_writereg_mask(state, 0xDF, 0x03, 0x03);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
... set bits 0 and 1 ...
>
> *ucblocks = (stv0297_readreg(state, 0xD5) << 8)
> | stv0297_readreg(state, 0xD4);
>+
>+ stv0297_writereg_mask(state, 0xDF, 0x03, 0x02);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
... set bit 1, clear bit 0 ...
>+ stv0297_writereg_mask(state, 0xDF, 0x03, 0x01);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
... clear bit 1, set bit 0 ...
>
> return 0;
> }
Looks suspicious to me. Is this correct?
Oliver
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