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path: root/drivers/media/tuners/r820t.c
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* [media] dvb_frontend: tuner_ops.release returns voidMax Kellermann2016-11-181-3/+1Star
| | | | | | | | | It is not clear what this return value means. All implemenations return 0, and the one caller ignores the value. Let's remove this useless return value completely. Signed-off-by: Max Kellermann <max.kellermann@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* r820t: comment out two ancillary tablesMauro Carvalho Chehab2016-06-241-14/+15
| | | | | | | | | | | | | | | | As Gcc6.1 warned, those tables are currently unused: drivers/media/tuners/r820t.c:349:18: warning: 'r820t_mixer_gain_steps' defined but not used [-Wunused-const-variable=] static const int r820t_mixer_gain_steps[] = { ^~~~~~~~~~~~~~~~~~~~~~ drivers/media/tuners/r820t.c:345:18: warning: 'r820t_lna_gain_steps' defined but not used [-Wunused-const-variable=] static const int r820t_lna_gain_steps[] = { ^~~~~~~~~~~~~~~~~~~~ They're actually used only by a routine that it is currently commented out. So, move those tables to be together with such code and comment them out. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* [media] r820t: Delete an unnecessary variable initialisation in ↵Markus Elfring2016-01-251-1/+1
| | | | | | | | | | | generic_set_freq() The variable "rc" will be set to an appropriate value from a call of the r820t_set_tv_standard() function. Thus let us omit the explicit initialisation at the beginning. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: fix identingMauro Carvalho Chehab2015-05-011-2/+2
| | | | | | drivers/media/tuners/r820t.c:945 r820t_sysfreq_sel() warn: inconsistent indenting Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: enable flt_ext_wide for SYS_DVBC_ANNEX_A standardBenjamin Larsson2015-04-081-1/+1
| | | | | Signed-off-by: Benjamin Larsson <benjamin@southpole.se> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: add settings for SYS_DVBC_ANNEX_C standardBenjamin Larsson2015-04-081-0/+12
| | | | | Signed-off-by: Benjamin Larsson <benjamin@southpole.se> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: change read_gain() code to match register layoutBenjamin Larsson2015-04-031-1/+1
| | | | | | Signed-off-by: Benjamin Larsson <benjamin@southpole.se> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: add DVBC profile in sysfreq_selBenjamin Larsson2015-04-031-0/+13
| | | | | | | | | This will make the Astrometa DVB-T/T2/C usb stick be able to pick up muxes around 290-314 MHz. Signed-off-by: Benjamin Larsson <benjamin@southpole.se> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: add DVB-C configAntti Palosaari2014-11-141-0/+12
| | | | | | | Add config values for SYS_DVBC_ANNEX_A. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* [media] r820t: remove unnecessary break after gotoFabian Frederick2014-07-231-1/+0Star
| | | | | | | Cc: Antti Palosaari <crope@iki.fi> Cc: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] dvb-frontends: Add staticAlan2014-07-041-1/+1
| | | | | | | | | | | | Add static to tda m_* variables in the header. They don't need to be global. With some cleanup they could probably even be marked const. Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=68191 Reported-by: Christian Schneider <christian@ch-sc.de> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] r820t: fix size and init valuesBenjamin Larsson2014-04-071-1/+2
| | | | | | | | | Correct the initialization values at the start of the function and use proper variable sizes to prevent overflow. Signed-off-by: Benjamin Larsson <benjamin@southpole.se> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media, edac] Change my email addressMauro Carvalho Chehab2014-02-071-2/+2
| | | | | | | | There are several left overs with my old email address. Remove their occurrences and add myself at CREDITS, to allow people to be able to reach me on my new addresses. Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] r820t: add support for R828DAntti Palosaari2013-10-311-9/+13
| | | | | | | | | | | | | | | | Small changes in order to support tuner version R828D @ 16 MHz clock. There was 'vco_fine_tune' check, which seems to adjust synthesizer output divider (mixer dix / LO div / Rout) by one. R828D seems to return vco_fine_tune=1 every time and that condition causes tuning fail as output divider was increased by one. Resolve problem by skipping whole condition in case of R828D tuner. Just to mention, other tuner, R820T, seems to return 2 here. Synthesizer maximum frequency check was hard coded to check synthesizer N and thus worked correctly only for clock frequencies around 30 MHz. As whole test is quite useless in any case, I removed it totally. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
* [media] r820t: fix imr calibrationGianluca Gennari2013-06-191-2/+2
| | | | | | | | | | | | | | | | | The r820t_imr() calibration function of the Rafael Micro R820T tuner generates this error at every tune attempt: r820t 0-001a: No valid PLL values for 2252021 kHz! The function was inspired by the original Realtek driver for rtl2832 devices with the r820t tuner; anyway, in the original code the XTAL frequency of the tuner was expressed in KHz, while in the kernel driver it is expressed in Hz; so the calibration failed because of an out-of-range initial value. The final result of the computation is then passed to the r820t_set_mux() and r820t_set_pll() functions, but the conversion from KHz to Hz is already correctly implemented. Signed-off-by: Gianluca Gennari <gennarone@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: avoid potential memcpy buffer overflow in shadow_store()Gianluca Gennari2013-06-191-2/+2
| | | | | | | | The memcpy in shadow_store() could exceed buffer limits when r > 0. Signed-off-by: Gianluca Gennari <gennarone@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: remove redundant initializations in r820t_attach()Gianluca Gennari2013-06-191-6/+3Star
| | | | | | | | | | fe->tuner_priv and fe->ops.tuner_ops are initialized twice in r820t_attach(). Remove the redundant initializations and also move fe->ops.tuner_ops initialization outside of the mutex lock (as in the xc4000 tuner code for example). Signed-off-by: Gianluca Gennari <gennarone@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: do not double-free fe->tuner_priv in r820t_release()Gianluca Gennari2013-06-091-1/+0Star
| | | | | | | | fe->tuner_priv is already freed by hybrid_tuner_release_state(). Signed-off-by: Gianluca Gennari <gennarone@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: Remove a warning for an unused valueMauro Carvalho Chehab2013-04-251-0/+7
| | | | | | | | | | | | | Currently, the driver complains about the pre_detect var: drivers/media/tuners/r820t.c: In function 'r820t_sysfreq_sel': drivers/media/tuners/r820t.c:722:31: warning: variable 'pre_dect' set but not used [-Wunused-but-set-variable] While rtl8232 code comments it, perhaps some other driver may use. So, the better is to keep the code there, allowing to enable it via r820t config data. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: quiet gcc warning on n_ringFengguang Wu2013-04-251-4/+1Star
| | | | | | | | | | drivers/media/tuners/r820t.c: In function 'r820t_imr': drivers/media/tuners/r820t.c:1871:8: warning: 'n_ring' may be used uninitialized in this function [-Wmaybe-uninitialized] Mauro: This is a FALSE POSITIVE: the loop will always return a value for n_ring, as the last test will fill it with 15, if the loop fails. Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: memory leak in release()Dan Carpenter2013-04-251-2/+1Star
| | | | | | | | I've moved the kfree(fe->tuner_priv) one line earlier, otherwise it is a no-op. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: precendence bug in r820t_xtal_check()Dan Carpenter2013-04-251-1/+1
| | | | | | | | The test as written is always false. It looks like the intent was to test that the bit was not set. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] r820t: Don't divide the IF by twoMauro Carvalho Chehab2013-04-171-0/+3
| | | | | | | | The original Win driver doesn't do; rtl-sdr also disabled that piece of the code. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: disable auto gain/VGA settingMauro Carvalho Chehab2013-04-171-5/+3Star
| | | | | | | | On field tests, the auto gain routine is not working, nor it is used by the original driver. Let's comment it for now. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: put it into automatic gain modeMauro Carvalho Chehab2013-04-171-3/+3
| | | | | | | Currently, it is putting it on manual mode. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Fix hp_cor filter maskMauro Carvalho Chehab2013-04-171-1/+1
| | | | | | | The bit mask was inverted here. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: fix PLL calculusMauro Carvalho Chehab2013-04-171-17/+10Star
| | | | | | | | | | There are a few errors at the PLL calculus, causing the device to use wrong values. While here, change the calculus to use 32 bits, as there's no need for 64 bits there. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Don't put it in standby if not initialized yetMauro Carvalho Chehab2013-04-171-0/+4
| | | | | | | | r820t_standby() can be called before r820t_init(). If that happens, just do nothing. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: avoid rewrite all regs when not neededMauro Carvalho Chehab2013-04-171-6/+5Star
| | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Allow disabling IMR callibrationMauro Carvalho Chehab2013-04-171-4/+19
| | | | | | | | | | | | | | The rtl-sdr library disabled IMR callibration. While I'm not sure yet why, it could be a good idea to add a modprobe parameter here, to allow to also disable it. There are two rationale behind it: - It helps to compare USB dumps between rtl-sdr and the Kernel module; - If rtl-sdr disabled it, perhaps there's a good reason (e. g. it might not be actually working, or it might be causing some trouble). For both cases, it seems useful to add a modprobe parameter to allow testing the device with both configurations. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: add a commented code for GPIOMauro Carvalho Chehab2013-04-171-0/+8
| | | | | | | | | | | | | | | Add the code to set the GPIO for this tuner. This code is currently unused, so it is kept there only for completeness. With this patch there are just two things that got left from the original driver: - At standby, there's another mode, not used by rtl2832u. Not sure if it might be needed in the future, but I suspect it is not used at all; - There is a "fast tune" mode. As nor DVB or V4L API supports it, it seems an overkill to implement it. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: add IMR calibrate codeMauro Carvalho Chehab2013-04-171-21/+681
| | | | | | | | | | This code seems to calibrate I/Q phase and gain during the device initialization. This is done only once, and it doesn't seem to be needed to happen after resuming. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: proper initialize the PLL registerMauro Carvalho Chehab2013-04-171-15/+28
| | | | | | | | | The rtl-sdr library, from where this driver was initially based, doesn't use half PLL clock, but this is used on the Realtek Kernel driver. So, also do the same here. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: use usleep_range()Mauro Carvalho Chehab2013-04-171-4/+4
| | | | | | | | Instead of using msleep(), use sleep_range(), as it provides a closer sleep time. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: fix prefix of the r820t_read() functionMauro Carvalho Chehab2013-04-171-8/+8
| | | | | | | | Just cosmetic changes: all other functions are prefixed by r820t. Do the same for r820t_read(). Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: split the function that read cached regsMauro Carvalho Chehab2013-04-171-5/+15
| | | | | | | | As we'll need to retrieve cached registers, make this function explicit. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: better report signal strengthMauro Carvalho Chehab2013-04-171-0/+2
| | | | | | | If signal is zero, shows it as a zero, not as 0xff. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: add support for diplexerMauro Carvalho Chehab2013-04-171-0/+12
| | | | | | | | This is part of the original driver, and adding it doesn't hurt, so add it, to better sync the code. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Show the read data in the bit-reversed orderMauro Carvalho Chehab2013-04-171-2/+3
| | | | | | | | As the driver's logic uses the bit-reversed order for read, use it as well when displaying the debug messages. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: use the second table for 7MHzMauro Carvalho Chehab2013-04-171-2/+10
| | | | | | | | The Realtek Kernel driver uses the second DVB-T 7MHz table instead of the first one. Use it as well. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Invert bits for read opsMauro Carvalho Chehab2013-04-171-3/+6
| | | | | | | On read, the bit order is inverted. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: use the right IF for the selected TV standardMauro Carvalho Chehab2013-04-171-4/+4
| | | | | | | | IF is set at r820t_set_tv_standard(). So, we can't calculate LO frequency before calling it. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Fix IF scaleMauro Carvalho Chehab2013-04-171-1/+1
| | | | | | | Scale used at get_if_freq and LO freq calculus is Hz. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] rtl820t: Add a debug msg when PLL gets lockedMauro Carvalho Chehab2013-04-171-0/+6
| | | | | | | [ 2255.342797] r820t 3-001a: generic_set_freq: PLL locked on frequency 725476191 Hz, gain=45 Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: proper lock and set the I2C gateMauro Carvalho Chehab2013-04-171-17/+33
| | | | | | | | | As this tuner can be used by analog and digital parts of the driver, be sure that all ops that access the hardware will be be properly locked. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Set gain mode to autoMauro Carvalho Chehab2013-04-171-0/+91
| | | | | | | | | | | | This tuner works with 2 modes: automatic gain mode and manual gain mode. Put it into automatic mode, as we currently don't have any API for manual gain adjustment. The logic to allow setting the manual mode is there, as it is just a few extra code. This way, if/when we latter add support for setting the gain mode, the code is already there. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Give a better estimation of the signal strengthMauro Carvalho Chehab2013-04-171-3/+27
| | | | | | | | Instead of a binary signal strength measure, use the tuner gain to obtain a better estimation of the signal strength. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
* [media] r820t: Add a tuner driver for Rafael Micro R820T silicon tunerMauro Carvalho Chehab2013-04-171-0/+1486
This driver was written from scratch, based on an existing driver that it is part of rtl-sdr git tree, released under GPLv2: https://groups.google.com/forum/#!topic/ultra-cheap-sdr/Y3rBEOFtHug https://github.com/n1gp/gr-baz http://cgit.osmocom.org/rtl-sdr/plain/src/tuner_r820t.c (there are also other variants of it out there) >From what I understood from the threads, the original driver was converted to userspace from a Realtek tree. I couldn't find the original tree. However, the original driver look awkward on my eyes. So, I decided to write a new version from it from the scratch, while trying to reproduce everything found there. TODO: - After locking, the original driver seems to have some routines to improve reception. This was not implemented here yet. - RF Gain set/get is not implemented. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Antti Palosaari <crope@iki.fi>
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