diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-09-10 10:36:37 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-10-21 01:06:10 -0200 |
| commit | f89ca6fae204ca0c6eb0bb444290ad8032bf7aa2 (patch) | |
| tree | cd526dfd98cc3f8b6ec375ccccb612ad9012bb29 /drivers/media/dvb | |
| parent | bdc6fad34139fdd5182e05977b4e5dc7ac132675 (diff) | |
| download | blackbird-op-linux-f89ca6fae204ca0c6eb0bb444290ad8032bf7aa2.tar.gz blackbird-op-linux-f89ca6fae204ca0c6eb0bb444290ad8032bf7aa2.zip | |
V4L/DVB: cx22702: Simplify cx22702_set_tps()
Code in function cx22702_set_tps() can be slightly simplified.
Apparently gcc was smart enough to optimize it anyway, but it can't
hurt to make the code more readable.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb')
| -rw-r--r-- | drivers/media/dvb/frontends/cx22702.c | 58 |
1 files changed, 26 insertions, 32 deletions
diff --git a/drivers/media/dvb/frontends/cx22702.c b/drivers/media/dvb/frontends/cx22702.c index f9a7aaee1900..ff6c4983051c 100644 --- a/drivers/media/dvb/frontends/cx22702.c +++ b/drivers/media/dvb/frontends/cx22702.c @@ -316,33 +316,31 @@ static int cx22702_set_tps(struct dvb_frontend *fe, } /* manually programmed values */ - val = 0; - switch (p->u.ofdm.constellation) { + switch (p->u.ofdm.constellation) { /* mask 0x18 */ case QPSK: - val = (val & 0xe7); + val = 0x00; break; case QAM_16: - val = (val & 0xe7) | 0x08; + val = 0x08; break; case QAM_64: - val = (val & 0xe7) | 0x10; + val = 0x10; break; default: dprintk("%s: invalid constellation\n", __func__); return -EINVAL; } - switch (p->u.ofdm.hierarchy_information) { + switch (p->u.ofdm.hierarchy_information) { /* mask 0x07 */ case HIERARCHY_NONE: - val = (val & 0xf8); break; case HIERARCHY_1: - val = (val & 0xf8) | 1; + val |= 0x01; break; case HIERARCHY_2: - val = (val & 0xf8) | 2; + val |= 0x02; break; case HIERARCHY_4: - val = (val & 0xf8) | 3; + val |= 0x03; break; default: dprintk("%s: invalid hierarchy\n", __func__); @@ -350,44 +348,42 @@ static int cx22702_set_tps(struct dvb_frontend *fe, } cx22702_writereg(state, 0x06, val); - val = 0; - switch (p->u.ofdm.code_rate_HP) { + switch (p->u.ofdm.code_rate_HP) { /* mask 0x38 */ case FEC_NONE: case FEC_1_2: - val = (val & 0xc7); + val = 0x00; break; case FEC_2_3: - val = (val & 0xc7) | 0x08; + val = 0x08; break; case FEC_3_4: - val = (val & 0xc7) | 0x10; + val = 0x10; break; case FEC_5_6: - val = (val & 0xc7) | 0x18; + val = 0x18; break; case FEC_7_8: - val = (val & 0xc7) | 0x20; + val = 0x20; break; default: dprintk("%s: invalid code_rate_HP\n", __func__); return -EINVAL; } - switch (p->u.ofdm.code_rate_LP) { + switch (p->u.ofdm.code_rate_LP) { /* mask 0x07 */ case FEC_NONE: case FEC_1_2: - val = (val & 0xf8); break; case FEC_2_3: - val = (val & 0xf8) | 1; + val |= 0x01; break; case FEC_3_4: - val = (val & 0xf8) | 2; + val |= 0x02; break; case FEC_5_6: - val = (val & 0xf8) | 3; + val |= 0x03; break; case FEC_7_8: - val = (val & 0xf8) | 4; + val |= 0x04; break; default: dprintk("%s: invalid code_rate_LP\n", __func__); @@ -395,30 +391,28 @@ static int cx22702_set_tps(struct dvb_frontend *fe, } cx22702_writereg(state, 0x07, val); - val = 0; - switch (p->u.ofdm.guard_interval) { + switch (p->u.ofdm.guard_interval) { /* mask 0x0c */ case GUARD_INTERVAL_1_32: - val = (val & 0xf3); + val = 0x00; break; case GUARD_INTERVAL_1_16: - val = (val & 0xf3) | 0x04; + val = 0x04; break; case GUARD_INTERVAL_1_8: - val = (val & 0xf3) | 0x08; + val = 0x08; break; case GUARD_INTERVAL_1_4: - val = (val & 0xf3) | 0x0c; + val = 0x0c; break; default: dprintk("%s: invalid guard_interval\n", __func__); return -EINVAL; } - switch (p->u.ofdm.transmission_mode) { + switch (p->u.ofdm.transmission_mode) { /* mask 0x03 */ case TRANSMISSION_MODE_2K: - val = (val & 0xfc); break; case TRANSMISSION_MODE_8K: - val = (val & 0xfc) | 1; + val |= 0x1; break; default: dprintk("%s: invalid transmission_mode\n", __func__); |
