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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-16 00:49:56 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-16 00:49:56 +0400 |
commit | 122804ecb59493fbb4d31b3ba9ac59faaf45276f (patch) | |
tree | cff4d8a158c412e4a8d3abc8d91bb0eb52b01c9a /drivers/media/dvb/frontends/s5h1409.c | |
parent | 16008d641670571ff4cd750b416c7caf2d89f467 (diff) | |
parent | 126400033940afb658123517a2e80eb68259fbd7 (diff) | |
download | linux-122804ecb59493fbb4d31b3ba9ac59faaf45276f.tar.xz |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (655 commits)
[media] revert patch: HDIC HD29L2 DMB-TH USB2.0 reference design driver
mb86a20s: Add a few more register settings at the init seq
mb86a20s: Group registers into the same line
[media] [PATCH] don't reset the delivery system on DTV_CLEAR
[media] [BUG] it913x-fe fix typo error making SNR levels unstable
[media] cx23885: Query the CX25840 during enum_input for status
[media] cx25840: Add support for g_input_status
[media] rc-videomate-m1f.c Rename to match remote controler name
[media] drivers: media: au0828: Fix dependency for VIDEO_AU0828
[media] convert drivers/media/* to use module_platform_driver()
[media] drivers: video: cx231xx: Fix dependency for VIDEO_CX231XX_DVB
[media] Exynos4 JPEG codec v4l2 driver
[media] doc: v4l: selection: choose pixels as units for selection rectangles
[media] v4l: s5p-tv: mixer: fix setup of VP scaling
[media] v4l: s5p-tv: mixer: add support for selection API
[media] v4l: emulate old crop API using extended crop/compose API
[media] doc: v4l: add documentation for selection API
[media] doc: v4l: add binary images for selection API
[media] v4l: add support for selection api
[media] hd29l2: fix review findings
...
Diffstat (limited to 'drivers/media/dvb/frontends/s5h1409.c')
-rw-r--r-- | drivers/media/dvb/frontends/s5h1409.c | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c index 0e2f61a8978f..f71b06221e14 100644 --- a/drivers/media/dvb/frontends/s5h1409.c +++ b/drivers/media/dvb/frontends/s5h1409.c @@ -631,9 +631,9 @@ static void s5h1409_set_qam_interleave_mode_legacy(struct dvb_frontend *fe) } /* Talk to the demod, set the FEC, GUARD, QAM settings etc */ -static int s5h1409_set_frontend(struct dvb_frontend *fe, - struct dvb_frontend_parameters *p) +static int s5h1409_set_frontend(struct dvb_frontend *fe) { + struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct s5h1409_state *state = fe->demodulator_priv; dprintk("%s(frequency=%d)\n", __func__, p->frequency); @@ -642,12 +642,12 @@ static int s5h1409_set_frontend(struct dvb_frontend *fe, state->current_frequency = p->frequency; - s5h1409_enable_modulation(fe, p->u.vsb.modulation); + s5h1409_enable_modulation(fe, p->modulation); if (fe->ops.tuner_ops.set_params) { if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); - fe->ops.tuner_ops.set_params(fe, p); + fe->ops.tuner_ops.set_params(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); } @@ -879,7 +879,36 @@ static int s5h1409_read_snr(struct dvb_frontend *fe, u16 *snr) static int s5h1409_read_signal_strength(struct dvb_frontend *fe, u16 *signal_strength) { - return s5h1409_read_snr(fe, signal_strength); + /* borrowed from lgdt330x.c + * + * Calculate strength from SNR up to 35dB + * Even though the SNR can go higher than 35dB, + * there is some comfort factor in having a range of + * strong signals that can show at 100% + */ + u16 snr; + u32 tmp; + int ret = s5h1409_read_snr(fe, &snr); + + *signal_strength = 0; + + if (0 == ret) { + /* The following calculation method was chosen + * purely for the sake of code re-use from the + * other demod drivers that use this method */ + + /* Convert from SNR in dB * 10 to 8.24 fixed-point */ + tmp = (snr * ((1 << 24) / 10)); + + /* Convert from 8.24 fixed-point to + * scale the range 0 - 35*2^24 into 0 - 65535*/ + if (tmp >= 8960 * 0x10000) + *signal_strength = 0xffff; + else + *signal_strength = tmp / 8960; + } + + return ret; } static int s5h1409_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) @@ -896,13 +925,13 @@ static int s5h1409_read_ber(struct dvb_frontend *fe, u32 *ber) return s5h1409_read_ucblocks(fe, ber); } -static int s5h1409_get_frontend(struct dvb_frontend *fe, - struct dvb_frontend_parameters *p) +static int s5h1409_get_frontend(struct dvb_frontend *fe) { + struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct s5h1409_state *state = fe->demodulator_priv; p->frequency = state->current_frequency; - p->u.vsb.modulation = state->current_modulation; + p->modulation = state->current_modulation; return 0; } @@ -967,10 +996,9 @@ error: EXPORT_SYMBOL(s5h1409_attach); static struct dvb_frontend_ops s5h1409_ops = { - + .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, .info = { .name = "Samsung S5H1409 QAM/8VSB Frontend", - .type = FE_ATSC, .frequency_min = 54000000, .frequency_max = 858000000, .frequency_stepsize = 62500, |