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>
diff --git a/drivers/media/dvb/frontends/or51132.c b/drivers/media/dvb/frontends/or51132.c
index 619856b..c25ec73 100644
--- a/drivers/media/dvb/frontends/or51132.c
+++ b/drivers/media/dvb/frontends/or51132.c
@@ -400,6 +400,44 @@
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 @@
.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,