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path: root/drivers/media/common/tuners/tuner-xc2028.c
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Diffstat (limited to 'drivers/media/common/tuners/tuner-xc2028.c')
-rw-r--r--drivers/media/common/tuners/tuner-xc2028.c116
1 files changed, 55 insertions, 61 deletions
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 3acbaa04e1b3..27555995f7e4 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -311,7 +311,7 @@ static int load_all_firmwares(struct dvb_frontend *fe)
n_array, fname, name,
priv->firm_version >> 8, priv->firm_version & 0xff);
- priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL);
+ priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL);
if (priv->firm == NULL) {
tuner_err("Not enough memory to load firmware file.\n");
rc = -ENOMEM;
@@ -891,7 +891,7 @@ static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
/* Frequency is locked */
if (frq_lock == 1)
- signal = 32768;
+ signal = 1 << 11;
/* Get SNR of the video signal */
rc = xc2028_get_reg(priv, 0x0040, &signal);
@@ -962,14 +962,24 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
* For DTV 7/8, the firmware uses BW = 8000, so it needs a
* further adjustment to get the frequency center on VHF
*/
+
+ /*
+ * The firmware DTV78 used to work fine in UHF band (8 MHz
+ * bandwidth) but not at all in VHF band (7 MHz bandwidth).
+ * The real problem was connected to the formula used to
+ * calculate the center frequency offset in VHF band.
+ * In fact, removing the 500KHz adjustment fixed the problem.
+ * This is coherent to what was implemented for the DTV7
+ * firmware.
+ * In the end, now the center frequency is the same for all 3
+ * firmwares (DTV7, DTV8, DTV78) and doesn't depend on channel
+ * bandwidth.
+ */
+
if (priv->cur_fw.type & DTV6)
offset = 1750000;
- else if (priv->cur_fw.type & DTV7)
- offset = 2250000;
- else /* DTV8 or DTV78 */
+ else /* DTV7 or DTV8 or DTV78 */
offset = 2750000;
- if ((priv->cur_fw.type & DTV78) && freq < 470000000)
- offset -= 500000;
/*
* xc3028 additional "magic"
@@ -979,17 +989,13 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
* newer firmwares
*/
-#if 1
/*
* The proper adjustment would be to do it at s-code table.
* However, this didn't work, as reported by
* Robert Lowery <rglowery@exemail.com.au>
*/
- if (priv->cur_fw.type & DTV7)
- offset += 500000;
-
-#else
+#if 0
/*
* Still need tests for XC3028L (firmware 3.2 or upper)
* So, for now, let's just comment the per-firmware
@@ -1084,68 +1090,28 @@ static int xc2028_set_analog_freq(struct dvb_frontend *fe,
V4L2_TUNER_ANALOG_TV, type, p->std, 0);
}
-static int xc2028_set_params(struct dvb_frontend *fe,
- struct dvb_frontend_parameters *p)
+static int xc2028_set_params(struct dvb_frontend *fe)
{
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ u32 delsys = c->delivery_system;
+ u32 bw = c->bandwidth_hz;
struct xc2028_data *priv = fe->tuner_priv;
unsigned int type=0;
- fe_bandwidth_t bw = BANDWIDTH_8_MHZ;
u16 demod = 0;
tuner_dbg("%s called\n", __func__);
- switch(fe->ops.info.type) {
- case FE_OFDM:
- bw = p->u.ofdm.bandwidth;
+ switch (delsys) {
+ case SYS_DVBT:
+ case SYS_DVBT2:
/*
* The only countries with 6MHz seem to be Taiwan/Uruguay.
* Both seem to require QAM firmware for OFDM decoding
* Tested in Taiwan by Terry Wu <terrywu2009@gmail.com>
*/
- if (bw == BANDWIDTH_6_MHZ)
+ if (bw <= 6000000)
type |= QAM;
- break;
- case FE_ATSC:
- bw = BANDWIDTH_6_MHZ;
- /* The only ATSC firmware (at least on v2.7) is D2633 */
- type |= ATSC | D2633;
- break;
- /* DVB-S and pure QAM (FE_QAM) are not supported */
- default:
- return -EINVAL;
- }
-
- switch (bw) {
- case BANDWIDTH_8_MHZ:
- if (p->frequency < 470000000)
- priv->ctrl.vhfbw7 = 0;
- else
- priv->ctrl.uhfbw8 = 1;
- type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
- type |= F8MHZ;
- break;
- case BANDWIDTH_7_MHZ:
- if (p->frequency < 470000000)
- priv->ctrl.vhfbw7 = 1;
- else
- priv->ctrl.uhfbw8 = 0;
- type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
- type |= F8MHZ;
- break;
- case BANDWIDTH_6_MHZ:
- type |= DTV6;
- priv->ctrl.vhfbw7 = 0;
- priv->ctrl.uhfbw8 = 0;
- break;
- default:
- tuner_err("error: bandwidth not supported.\n");
- };
- /*
- Selects between D2633 or D2620 firmware.
- It doesn't make sense for ATSC, since it should be D2633 on all cases
- */
- if (fe->ops.info.type != FE_ATSC) {
switch (priv->ctrl.type) {
case XC2028_D2633:
type |= D2633;
@@ -1161,6 +1127,34 @@ static int xc2028_set_params(struct dvb_frontend *fe,
else
type |= D2620;
}
+ break;
+ case SYS_ATSC:
+ /* The only ATSC firmware (at least on v2.7) is D2633 */
+ type |= ATSC | D2633;
+ break;
+ /* DVB-S and pure QAM (FE_QAM) are not supported */
+ default:
+ return -EINVAL;
+ }
+
+ if (bw <= 6000000) {
+ type |= DTV6;
+ priv->ctrl.vhfbw7 = 0;
+ priv->ctrl.uhfbw8 = 0;
+ } else if (bw <= 7000000) {
+ if (c->frequency < 470000000)
+ priv->ctrl.vhfbw7 = 1;
+ else
+ priv->ctrl.uhfbw8 = 0;
+ type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
+ type |= F8MHZ;
+ } else {
+ if (c->frequency < 470000000)
+ priv->ctrl.vhfbw7 = 0;
+ else
+ priv->ctrl.uhfbw8 = 1;
+ type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
+ type |= F8MHZ;
}
/* All S-code tables need a 200kHz shift */
@@ -1185,7 +1179,7 @@ static int xc2028_set_params(struct dvb_frontend *fe,
*/
}
- return generic_set_freq(fe, p->frequency,
+ return generic_set_freq(fe, c->frequency,
V4L2_TUNER_DIGITAL_TV, type, 0, demod);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 03:37:15 +0300