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| author | Patrick Boettcher <pb@linuxtv.org> | 2006-05-14 12:01:31 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-06-25 09:00:42 +0400 |
| commit | dea74869f3c62b0b7addd67017b22b394e942aac (patch) | |
| tree | d1a597caea6615c76f34896cc832fd1371f2e776 /drivers/media/dvb/frontends/ves1820.c | |
| parent | 332bed5fc25ab0eb84215ecd89a4acd48219eee0 (diff) | |
| download | linux-dea74869f3c62b0b7addd67017b22b394e942aac.tar.xz | |
V4L/DVB (4028): Change dvb_frontend_ops to be a real field instead of a pointer field inside dvb_frontend
The dvb_frontend_ops is a pointer inside dvb_frontend. That's why every demod-driver
is having a field of dvb_frontend_ops in its private-state-struct and
using the reference for filling the pointer-field in dvb_frontend.
- It saves at least two lines of code per demod-driver,
- reduces object size (one less dereference per frontend_ops-access),
- be coherent with dvb_tuner_ops,
- makes it a little bit easier for newbies to understand how it works and
- avoids stupid mistakes because you would have to copy the dvb_frontend_ops
always, before you could assign the static pointer directly, which was
dangerous.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends/ves1820.c')
| -rw-r--r-- | drivers/media/dvb/frontends/ves1820.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/media/dvb/frontends/ves1820.c b/drivers/media/dvb/frontends/ves1820.c index 9810e2dcbbec..6bffe85c161c 100644 --- a/drivers/media/dvb/frontends/ves1820.c +++ b/drivers/media/dvb/frontends/ves1820.c @@ -35,7 +35,6 @@ struct ves1820_state { struct i2c_adapter* i2c; - struct dvb_frontend_ops ops; /* configuration settings */ const struct ves1820_config* config; struct dvb_frontend frontend; @@ -220,9 +219,9 @@ static int ves1820_set_parameters(struct dvb_frontend* fe, struct dvb_frontend_p if (real_qam < 0 || real_qam > 4) return -EINVAL; - if (fe->ops->tuner_ops.set_params) { - fe->ops->tuner_ops.set_params(fe, p); - if (fe->ops->i2c_gate_ctrl) fe->ops->i2c_gate_ctrl(fe, 0); + if (fe->ops.tuner_ops.set_params) { + fe->ops.tuner_ops.set_params(fe, p); + if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); } ves1820_set_symbolrate(state, p->u.qam.symbol_rate); @@ -381,7 +380,6 @@ struct dvb_frontend* ves1820_attach(const struct ves1820_config* config, goto error; /* setup the state */ - memcpy(&state->ops, &ves1820_ops, sizeof(struct dvb_frontend_ops)); state->reg0 = ves1820_inittab[0]; state->config = config; state->i2c = i2c; @@ -394,12 +392,12 @@ struct dvb_frontend* ves1820_attach(const struct ves1820_config* config, if (verbose) printk("ves1820: pwm=0x%02x\n", state->pwm); - state->ops.info.symbol_rate_min = (state->config->xin / 2) / 64; /* SACLK/64 == (XIN/2)/64 */ - state->ops.info.symbol_rate_max = (state->config->xin / 2) / 4; /* SACLK/4 */ - /* create dvb_frontend */ - state->frontend.ops = &state->ops; + memcpy(&state->frontend.ops, &ves1820_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.ops.info.symbol_rate_min = (state->config->xin / 2) / 64; /* SACLK/64 == (XIN/2)/64 */ + state->frontend.ops.info.symbol_rate_max = (state->config->xin / 2) / 4; /* SACLK/4 */ state->frontend.demodulator_priv = state; + return &state->frontend; error: |