14 Commits

Author SHA1 Message Date
Antti Palosaari
f158cbceb1 [media] ts2020: convert to regmap I2C API
Use regmap to cover I2C register access.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-10 10:59:25 -03:00
Antti Palosaari
e6ad9ce3e9 [media] ts2020: register I2C driver from legacy media attach
Register driver using I2C bindings internally when legacy media
attach is used. That is done by registering driver using I2C binding
from legacy attach. That way we can get valid I2C client, which is
needed for proper dev_() logging and regmap for example even legacy
binding is used.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-10 10:58:48 -03:00
Antti Palosaari
2ca58f45cc [media] ts2020: improve filter limit calc
* We don't need calculate channel bandwidth from symbol rate as it
is calculated by DVB core.

* Use clamp() to force upper/lower limit of filter 3dB frequency.
Upper limit should never exceeded 40MHz (80MHz BW) in any case,
though...

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-10 10:55:58 -03:00
Antti Palosaari
af9d525553 [media] ts2020: re-implement PLL calculations
Used frequency synthesizer is simple Integer-N PLL, with configurable
reference divider, output divider and of course N itself. Old
calculations were working fine, but not so easy to understand.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-06-10 10:55:09 -03:00
Antti Palosaari
b3226f961a [media] ts2020: do not use i2c_transfer() on sleep()
There is no need to use bulk i2c_transfer() to write single register.
Use write register function instead.

Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-02 22:27:32 -03:00
Antti Palosaari
dc245a5f9b [media] ts2020: implement I2C client bindings
Implement I2C binding model.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-02 22:24:03 -03:00
Antti Palosaari
abd9025b95 [media] ts2020: add support for TS2022
TS2022 is slightly newer and different version of same tuner, which
could be supported with rather small changes. Tuner type is
auto-detected.

Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-02 22:24:03 -03:00
Mauro Carvalho Chehab
b4559ace2c [media] ts2020: keep 1.06 MHz as default value for frequency_div
Changeset 9e8da9e8 added a parameter to specify the frequency
divisor, used by the driver. However, not all places are passing
this parameter. So, preserve the previous default, to avoid breaking
the existing drivers.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-10-02 06:48:15 -03:00
John Horan
03a6727995 [media] media: dvb-frontends: ts2020: Added in a option for frequency divider value for s600 devices
When the tuner part of the ds3000 driver was split to share code with the m88rs2000 driver, the ts2020 driver used
the frequency divider value from the m88rs2000 driver.  However the ds3000 driver requires a different value, and this
resulted in some frequecies being invisible to the tuner.  This patch adds back in the value needed for the ds3000 driver
and configured as an option in the dw2102 frontend driver.
It may also apply to su3000 devices, which use the same ds3000 driver, but for now it is only applied to the s660 device.

Signed-off-by: John Horan <knasher@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-10-02 06:48:14 -03:00
Malcolm Priestley
a0a030bdbe [media] ts2020: call get_rf_strength from frontend
Restore ds3000.c read_signal_strength.
Call tuner get_rf_strength from frontend read_signal_strength.
We are able to do a NULL check and doesn't limit the tuner
attach to the frontend attach area.
At the moment the lmedm04 tuner attach is stuck in frontend
attach area.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-06 10:49:38 -02:00
Malcolm Priestley
9898df6482 [media] ts2020.c: ts2020_set_params [BUG] point to fe->tuner_priv
Fixes corruption of fe->demodulator_priv

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-06 10:43:46 -02:00
Igor M. Liplianin
b858c331cd [media] m88rs2000: make use ts2020
Tuner part of Montage rs2000 chip is similar to ts2020 tuner.
Patch to use ts2020 code.

[mchehab@redhat.com: a few CodingStyle fixes]
Signed-off-by: Igor M. Liplianin <liplianin@me.by>

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-28 21:37:36 -02:00
Mauro Carvalho Chehab
f8c30b6f3b [media] ts2020: fix two warnings added by changeset 73f0af4
drivers/media/dvb-frontends/ts2020.c: In function 'ts2020_set_params':
drivers/media/dvb-frontends/ts2020.c:126:47: warning: variable 'div4' set but not used [-Wunused-but-set-variable]
drivers/media/dvb-frontends/ts2020.c: At top level:
drivers/media/dvb-frontends/ts2020.c:262:5: warning: no previous prototype for 'ts2020_get_signal_strength' [-Wmissing-prototypes]

Cc: Konstantin Dimitrov <kosio.dimitrov@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-27 19:36:27 -02:00
Konstantin Dimitrov
6fef4fc71e [media] ts2020: add ts2020 tuner driver
add separate ts2020 tuner driver

Signed-off-by: Konstantin Dimitrov <kosio.dimitrov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-27 19:26:58 -02:00