diff options
| author | Michael Krufky <mkrufky@linuxtv.org> | 2006-02-07 08:25:33 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-02-07 08:25:33 (GMT) |
| commit | 5f5941872c0035cb4624efe8c5a1dfbb89d199e7 (patch) | |
| tree | 0283d55a9bf202bead411201e3563df54ff54638 /drivers/media/video/tuner-simple.c | |
| parent | a78d0bfabda67dd40a5a97ba4c24265e1820e7ea (diff) | |
| download | linux-fsl-qoriq-5f5941872c0035cb4624efe8c5a1dfbb89d199e7.tar.xz | |
V4L/DVB (3268): Move video std detection to top of set_tv_freq function
- move video std detection to top of set_tv_freq function
- we must detect video std first, so that we can choose the correct
tuner_params
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/tuner-simple.c')
| -rw-r--r-- | drivers/media/video/tuner-simple.c | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/drivers/media/video/tuner-simple.c b/drivers/media/video/tuner-simple.c index 6f0d376..907ea8c 100644 --- a/drivers/media/video/tuner-simple.c +++ b/drivers/media/video/tuner-simple.c @@ -142,6 +142,29 @@ static void default_set_tv_freq(struct i2c_client *c, unsigned int freq) tun = &tuners[t->type]; j = TUNER_PARAM_ANALOG; + /* IFPCoff = Video Intermediate Frequency - Vif: + 940 =16*58.75 NTSC/J (Japan) + 732 =16*45.75 M/N STD + 704 =16*44 ATSC (at DVB code) + 632 =16*39.50 I U.K. + 622.4=16*38.90 B/G D/K I, L STD + 592 =16*37.00 D China + 590 =16.36.875 B Australia + 543.2=16*33.95 L' STD + 171.2=16*10.70 FM Radio (at set_radio_freq) + */ + + if (t->std == V4L2_STD_NTSC_M_JP) { + IFPCoff = 940; + } else if ((t->std & V4L2_STD_MN) && + !(t->std & ~V4L2_STD_MN)) { + IFPCoff = 732; + } else if (t->std == V4L2_STD_SECAM_LC) { + IFPCoff = 543; + } else { + IFPCoff = 623; + } + for (i = 0; i < tun->params[j].count; i++) { if (freq > tun->params[j].ranges[i].limit) continue; @@ -154,11 +177,19 @@ static void default_set_tv_freq(struct i2c_client *c, unsigned int freq) } config = tun->params[j].ranges[i].config; cb = tun->params[j].ranges[i].cb; - /* i == 0 -> VHF_LO */ - /* i == 1 -> VHF_HI */ - /* i == 2 -> UHF */ + /* i == 0 -> VHF_LO + * i == 1 -> VHF_HI + * i == 2 -> UHF */ tuner_dbg("tv: range %d\n",i); + div=freq + IFPCoff + offset; + + tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n", + freq / 16, freq % 16 * 100 / 16, + IFPCoff / 16, IFPCoff % 16 * 100 / 16, + offset / 16, offset % 16 * 100 / 16, + div); + /* tv norm specific stuff for multi-norm tuners */ switch (t->type) { case TUNER_PHILIPS_SECAM: // FI1216MF @@ -245,37 +276,6 @@ static void default_set_tv_freq(struct i2c_client *c, unsigned int freq) break; } - /* IFPCoff = Video Intermediate Frequency - Vif: - 940 =16*58.75 NTSC/J (Japan) - 732 =16*45.75 M/N STD - 704 =16*44 ATSC (at DVB code) - 632 =16*39.50 I U.K. - 622.4=16*38.90 B/G D/K I, L STD - 592 =16*37.00 D China - 590 =16.36.875 B Australia - 543.2=16*33.95 L' STD - 171.2=16*10.70 FM Radio (at set_radio_freq) - */ - - if (t->std == V4L2_STD_NTSC_M_JP) { - IFPCoff = 940; - } else if ((t->std & V4L2_STD_MN) && - !(t->std & ~V4L2_STD_MN)) { - IFPCoff = 732; - } else if (t->std == V4L2_STD_SECAM_LC) { - IFPCoff = 543; - } else { - IFPCoff = 623; - } - - div=freq + IFPCoff + offset; - - tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n", - freq / 16, freq % 16 * 100 / 16, - IFPCoff / 16, IFPCoff % 16 * 100 / 16, - offset / 16, offset % 16 * 100 / 16, - div); - if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) { buffer[0] = config; buffer[1] = cb; |