From 8af5e3813b78e429c1774bfac67033c3948c9c8e Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 17 Jun 2010 20:56:27 -0300 Subject: V4L/DVB: af9013: af9013_read_status() refactoring Function af9013_read_status() refactoring. Read lock bits in different order to save count of register reads. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/af9013.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) (limited to 'drivers/media') diff --git a/drivers/media/dvb/frontends/af9013.c b/drivers/media/dvb/frontends/af9013.c index c85ab3e31773..c10271aa3628 100644 --- a/drivers/media/dvb/frontends/af9013.c +++ b/drivers/media/dvb/frontends/af9013.c @@ -1184,45 +1184,49 @@ static int af9013_read_status(struct dvb_frontend *fe, fe_status_t *status) u8 tmp; *status = 0; - /* TPS lock */ - ret = af9013_read_reg_bits(state, 0xd330, 3, 1, &tmp); - if (ret) - goto error; - if (tmp) - *status |= FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL; - /* MPEG2 lock */ ret = af9013_read_reg_bits(state, 0xd507, 6, 1, &tmp); if (ret) goto error; if (tmp) - *status |= FE_HAS_SYNC | FE_HAS_LOCK; + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | + FE_HAS_SYNC | FE_HAS_LOCK; - if (!(*status & FE_HAS_SIGNAL)) { - /* AGC lock */ - ret = af9013_read_reg_bits(state, 0xd1a0, 6, 1, &tmp); + if (!*status) { + /* TPS lock */ + ret = af9013_read_reg_bits(state, 0xd330, 3, 1, &tmp); if (ret) goto error; if (tmp) - *status |= FE_HAS_SIGNAL; + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | + FE_HAS_VITERBI; } - if (!(*status & FE_HAS_CARRIER)) { + if (!*status) { /* CFO lock */ ret = af9013_read_reg_bits(state, 0xd333, 7, 1, &tmp); if (ret) goto error; if (tmp) - *status |= FE_HAS_CARRIER; + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; } - if (!(*status & FE_HAS_CARRIER)) { + if (!*status) { /* SFOE lock */ ret = af9013_read_reg_bits(state, 0xd334, 6, 1, &tmp); if (ret) goto error; if (tmp) - *status |= FE_HAS_CARRIER; + *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; + } + + if (!*status) { + /* AGC lock */ + ret = af9013_read_reg_bits(state, 0xd1a0, 6, 1, &tmp); + if (ret) + goto error; + if (tmp) + *status |= FE_HAS_SIGNAL; } ret = af9013_update_statistics(fe); -- cgit v1.2.1