V4L2 tuner API says incorrect value should be round to nearest
legal value. Implement it for ADC frequency setting.
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c | 24 ++++++++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
b/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
index 2c9b703..ddacfd2 100644
--- a/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
+++ b/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
@@ -666,7 +666,7 @@ static int rtl2832_sdr_set_adc(struct rtl2832_sdr_state *s)
u64 u64tmp;
u32 u32tmp;
- dev_dbg(&s->udev->dev, "%s:\n", __func__);
+ dev_dbg(&s->udev->dev, "%s: f_adc=%u\n", __func__, s->f_adc);
if (!test_bit(POWER_ON, &s->flags))
return 0;
@@ -1064,12 +1064,26 @@ static int rtl2832_sdr_s_frequency(struct file *file,
void *priv,
const struct v4l2_frequency *f)
{
struct rtl2832_sdr_state *s = video_drvdata(file);
- int ret;
+ int ret, band;
dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n",
__func__, f->tuner, f->type, f->frequency);
- if (f->tuner == 0) {
- s->f_adc = f->frequency;
+ /* ADC band midpoints */
+ #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) /
2)
+ #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) /
2)
+
+ if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
+ if (f->frequency < BAND_ADC_0)
+ band = 0;
+ else if (f->frequency < BAND_ADC_1)
+ band = 1;
+ else
+ band = 2;
+
+ s->f_adc = clamp_t(unsigned int, f->frequency,
+ bands_adc[band].rangelow,
+ bands_adc[band].rangehigh);
+
dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n",
__func__, s->f_adc);
ret = rtl2832_sdr_set_adc(s);
@@ -1287,6 +1301,8 @@ struct dvb_frontend *rtl2832_sdr_attach(struct
dvb_frontend *fe,
s->udev = d->udev;
s->i2c = i2c;
s->cfg = cfg;
+ s->f_adc = bands_adc[0].rangelow;
+ s->pixelformat = V4L2_PIX_FMT_SDR_U8;
mutex_init(&s->v4l2_lock);
mutex_init(&s->vb_queue_lock);
--
1.8.5.3
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