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V4L/DVB (3739): Add support for FE_GET_FRONTEND to or51132 frontend 

Adds the FE_GET_FRONTEND ioctl to the or51132 frontend.  Current modulation is
read from the hardware, while frequency is taken from the driver's state.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Trent Piepho 2006-04-06 06:03:09 -03:00 committed by Mauro Carvalho Chehab
parent e142e7c418
commit 0dbbc0a7ce
1 changed files with 39 additions and 0 deletions
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39
drivers/media/dvb/frontends/or51132.c
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@ -400,6 +400,44 @@ static int or51132_set_parameters(struct dvb_frontend* fe,
return 0;
}
static int or51132_get_parameters(struct dvb_frontend* fe,
struct dvb_frontend_parameters *param)
{
struct or51132_state* state = fe->demodulator_priv;
u8 buf[2];
/* Receiver Status */
buf[0]=0x04;
buf[1]=0x00;
msleep(30); /* 30ms */
if (i2c_writebytes(state,state->config->demod_address,buf,2)) {
printk(KERN_WARNING "or51132: get_parameters write error\n");
return -EREMOTEIO;
}
msleep(30); /* 30ms */
if (i2c_readbytes(state,state->config->demod_address,buf,2)) {
printk(KERN_WARNING "or51132: get_parameters read error\n");
return -EREMOTEIO;
}
switch(buf[0]) {
case 0x06: param->u.vsb.modulation = VSB_8; break;
case 0x43: param->u.vsb.modulation = QAM_64; break;
case 0x45: param->u.vsb.modulation = QAM_256; break;
default:
printk(KERN_WARNING "or51132: unknown status 0x%02x\n",
buf[0]);
return -EREMOTEIO;
}
/* FIXME: Read frequency from frontend, take AFC into account */
param->frequency = state->current_frequency;
/* FIXME: How to read inversion setting? Receiver 6 register? */
param->inversion = INVERSION_AUTO;
return 0;
}
static int or51132_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
struct or51132_state* state = fe->demodulator_priv;
@ -618,6 +656,7 @@ static struct dvb_frontend_ops or51132_ops = {
.sleep = or51132_sleep,
.set_frontend = or51132_set_parameters,
.get_frontend = or51132_get_parameters,
.get_tune_settings = or51132_get_tune_settings,
.read_status = or51132_read_status,