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authorMauro Carvalho Chehab <m.chehab@samsung.com>2014-07-21 14:21:18 -0300
committerJiri Slaby <jslaby@suse.cz>2014-09-17 16:55:01 +0200
commit1a590d34144b5d715d59a4c1270dc91f6bed5f24 (patch)
treeabe800769148f7aab0b72d8b7eb370fd65a2a0e5
parenta6c8b5b4fe09fe235aa7089caf7d4c000f26cd41 (diff)
downloadlwn-1a590d34144b5d715d59a4c1270dc91f6bed5f24.tar.gz
lwn-1a590d34144b5d715d59a4c1270dc91f6bed5f24.zip
media: xc5000: Fix get_frequency()
commit a3eec916cbc17dc1aaa3ddf120836cd5200eb4ef upstream. The programmed frequency on xc5000 is not the middle frequency, but the initial frequency on the bandwidth range. However, the DVB API works with the middle frequency. Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
-rw-r--r--drivers/media/tuners/xc5000.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c
index 5cd09a681b6a..b2d9e9cb97f7 100644
--- a/drivers/media/tuners/xc5000.c
+++ b/drivers/media/tuners/xc5000.c
@@ -55,7 +55,7 @@ struct xc5000_priv {
u32 if_khz;
u16 xtal_khz;
- u32 freq_hz;
+ u32 freq_hz, freq_offset;
u32 bandwidth;
u8 video_standard;
u8 rf_mode;
@@ -755,13 +755,13 @@ static int xc5000_set_params(struct dvb_frontend *fe)
case SYS_ATSC:
dprintk(1, "%s() VSB modulation\n", __func__);
priv->rf_mode = XC_RF_MODE_AIR;
- priv->freq_hz = freq - 1750000;
+ priv->freq_offset = 1750000;
priv->video_standard = DTV6;
break;
case SYS_DVBC_ANNEX_B:
dprintk(1, "%s() QAM modulation\n", __func__);
priv->rf_mode = XC_RF_MODE_CABLE;
- priv->freq_hz = freq - 1750000;
+ priv->freq_offset = 1750000;
priv->video_standard = DTV6;
break;
case SYS_ISDBT:
@@ -776,15 +776,15 @@ static int xc5000_set_params(struct dvb_frontend *fe)
switch (bw) {
case 6000000:
priv->video_standard = DTV6;
- priv->freq_hz = freq - 1750000;
+ priv->freq_offset = 1750000;
break;
case 7000000:
priv->video_standard = DTV7;
- priv->freq_hz = freq - 2250000;
+ priv->freq_offset = 2250000;
break;
case 8000000:
priv->video_standard = DTV8;
- priv->freq_hz = freq - 2750000;
+ priv->freq_offset = 2750000;
break;
default:
printk(KERN_ERR "xc5000 bandwidth not set!\n");
@@ -798,15 +798,15 @@ static int xc5000_set_params(struct dvb_frontend *fe)
priv->rf_mode = XC_RF_MODE_CABLE;
if (bw <= 6000000) {
priv->video_standard = DTV6;
- priv->freq_hz = freq - 1750000;
+ priv->freq_offset = 1750000;
b = 6;
} else if (bw <= 7000000) {
priv->video_standard = DTV7;
- priv->freq_hz = freq - 2250000;
+ priv->freq_offset = 2250000;
b = 7;
} else {
priv->video_standard = DTV7_8;
- priv->freq_hz = freq - 2750000;
+ priv->freq_offset = 2750000;
b = 8;
}
dprintk(1, "%s() Bandwidth %dMHz (%d)\n", __func__,
@@ -817,6 +817,8 @@ static int xc5000_set_params(struct dvb_frontend *fe)
return -EINVAL;
}
+ priv->freq_hz = freq - priv->freq_offset;
+
dprintk(1, "%s() frequency=%d (compensated to %d)\n",
__func__, freq, priv->freq_hz);
@@ -1067,7 +1069,7 @@ static int xc5000_get_frequency(struct dvb_frontend *fe, u32 *freq)
{
struct xc5000_priv *priv = fe->tuner_priv;
dprintk(1, "%s()\n", __func__);
- *freq = priv->freq_hz;
+ *freq = priv->freq_hz + priv->freq_offset;
return 0;
}