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[media] cx24120: Assume ucb registers is a counter 

The ucblocks register is probably a counter and not a rate; assume
it is so and change the calculations as required.

Signed-off-by: Jemma Denson <jdenson@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Jemma Denson 2015-05-20 11:57:49 -03:00 committed by Mauro Carvalho Chehab
parent 2a80f29642
commit bf8de2d38a
1 changed files with 7 additions and 4 deletions
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11
drivers/media/dvb-frontends/cx24120.c
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@ -154,7 +154,7 @@ struct cx24120_state {
u32 bitrate;
u32 berw_usecs;
u32 ber_prev;
u32 per_prev;
u32 ucb_offset;
unsigned long ber_jiffies_stats;
unsigned long per_jiffies_stats;
};
@ -698,8 +698,12 @@ static void cx24120_get_stats(struct cx24120_state *state)
ucb |= cx24120_readreg(state, CX24120_REG_UCB_L);
dev_dbg(&state->i2c->dev, "ucblocks = %d\n", ucb);
/* handle reset */
if (ucb < state->ucb_offset)
state->ucb_offset = c->block_error.stat[0].uvalue;
c->block_error.stat[0].scale = FE_SCALE_COUNTER;
c->block_error.stat[0].uvalue += ucb;
c->block_error.stat[0].uvalue = ucb + state->ucb_offset;
c->block_count.stat[0].scale = FE_SCALE_COUNTER;
c->block_count.stat[0].uvalue += state->bitrate / 8 / 208;
@ -1541,8 +1545,7 @@ static int cx24120_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
return 0;
}
*ucblocks = c->block_error.stat[0].uvalue - state->per_prev;
state->per_prev = c->block_error.stat[0].uvalue;
*ucblocks = c->block_error.stat[0].uvalue - state->ucb_offset;
return 0;
}