That tuner driver is mainly for DVB API, but there is some V4L2 API
controls for SDR usage. Make driver compile conditional so that V4L2
is not mandatory. Without the V4L2 support driver is build as a DVB
only, without SDR controls.

Fixes following errors reported by kbuild test robot:
ERROR: "v4l2_ctrl_auto_cluster" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_new_std" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_init_class" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_free" [drivers/media/tuners/e4000.ko] undefined!
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Exporting functions for hardware filter is a bad idea, as it
breaks compilation if:
	CONFIG_DVB_USB_AF9035=y
	CONFIG_DVB_AF9033=m

Because the PID filter function calls would be hardcoded at
af9035.

The same doesn't happen with af9033_attach() because the
dvb_attach() doesn't hardcode it. Instead, it dynamically
links it at runtime.

However, calling dvb_attach() multiple times is problematic,
as it increments module kref.

So, the better is to pass one parameter for the af9033 module
to fill the hardware filters, and then use it inside af9035.
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

PID filters are property of af9033 demod. Use PID filters from af9033
driver as it provides those now.

Allow possible dual mode on USB 1.1 mode too as bandwidth could be
just enough when filters are used on both frontends.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Implement PID filter and export it via symbol.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Do not use dynamic stack allocation.

>> drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c:181:1:
warning: 'rtl2832_sdr_wr' uses dynamic stack allocation [enabled by default]
Reported-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

All error/warnings:
   drivers/built-in.o: In function `e4000_set_params':
>> e4000.c:(.text+0x1219a1b): undefined reference to `__umoddi3'
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

In all cases, when the first capture is called, we need to
call the code that unmutes the volume.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Update the DocBook files accordingly.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Be more specific with regards to how some of these fields are interpreted.
In particular the height value and which fields can be set by the application.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

This example driver uses all the latest frameworks and can serve as a
starting point for a new V4L2 PCI driver.

Originally written for a presentation on how to use V4L2 frameworks
during FOSDEM 2014.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The calculated values for the minlen and maxlen fields, which were
rounded to multiples of 2 and clamped to a valid range, were left
unused. Use them in the calculation of the register value rather than
using the raw input minlen and maxlen.

This fixes the following warning with a W=1 build:
drivers/media/rc/img-ir/img-ir-hw.c In function ‘img_ir_free_timing’:
drivers/media/rc/img-ir/img-ir-hw.c +228 :23: warning: variable ‘maxlen’ set but not used [-Wunused-but-set-variable]
drivers/media/rc/img-ir/img-ir-hw.c +228 :15: warning: variable ‘minlen’ set but not used [-Wunused-but-set-variable]
Reported-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The JVC timings included timings intended for the secondary decoder
(which matches messages with no leader), however they were in the wrong
part of the timings structure, repeating s00 and s01 rather than being
in s10 and s11.

Distinct repeat timings can't be properly supported yet for JVC anyway
since the scancode callback cannot determine which decoder matched the
message, so for now remove these timings and don't bother to enable the
secondary decoder.

This fixes the following warnings with W=1:
drivers/media/rc/img-ir/img-ir-jvc.c +76 :3: warning: initialized field overwritten [-Woverride-init]
drivers/media/rc/img-ir/img-ir-jvc.c +76 :3: warning: (near initialization for ‘img_ir_jvc.timings.s00’) [-Woverride-init]
drivers/media/rc/img-ir/img-ir-jvc.c +81 :3: warning: initialized field overwritten [-Woverride-init]
drivers/media/rc/img-ir/img-ir-jvc.c +81 :3: warning: (near initialization for ‘img_ir_jvc.timings.s01’) [-Woverride-init]
Reported-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Fix a coccicheck warning in img-ir driver:
drivers/media/rc/img-ir/img-ir-hw.c:500:2-3: Unneeded semicolon
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

this patch fixes following build warning
drivers/media/platform/davinci/vpbe_display.c: In function 'vpbe_start_streaming':
drivers/media/platform/davinci/vpbe_display.c:344: warning: unused variable 'vpbe_dev'
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Realtek RTL2832 SDR driver. Currently in staging as SDR API is not
ready.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Clamp bandwidth to nearest legal value in automode in order to pass
v4l2-compliance test.
Reported-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Fix rtl2832_sdr driver v4l2-compliance issues.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Rename some variables.
Change error status checks from (ret < 0) to (ret).
No actual functionality changes.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

That comes possible after driver was converted to kernel I2C model
(I2C binding & proper I2C client with no gate control hack). All
nasty low level I2C routines are now covered by regmap.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Gate control is now implemented by rtl2832 I2C adapter so we do not
need proprietary DVB i2c_gate_ctrl() anymore.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

RTL2832 driver provides muxed I2C adapters for tuner bus I2C gate
control. Pass those adapters to rtl2832_sdr and e4000 modules in order
to get rid of proprietary DVB .i2c_gate_ctrl() callback use.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

We need depend on I2C_MUX as rtl2832 demod used requires it.

All error/warnings:
warning: (DVB_USB_RTL28XXU) selects DVB_RTL2832 which has unmet direct dependencies (MEDIA_SUPPORT && DVB_CORE && I2C && I2C_MUX)
ERROR: "i2c_add_mux_adapter" [drivers/media/dvb-frontends/rtl2832.ko] undefined!
ERROR: "i2c_del_mux_adapter" [drivers/media/dvb-frontends/rtl2832.ko] undefined!
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Use break, not return, for every case.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

With that extension module it supports SDR.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Optimize a little bit from data to text.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

E4000 tuner driver provides now some controls. Expose those to
userland.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Implement SDR driver for Realtek RTL2832U chip as a DVB extension
module. SDR module is attached by DVB USB RTL28XXU driver as a DVB
SEC (satellite equipment controller) module. Abusing unused SEC here
has no harm as that is DVB-T only frontend.

SDR functionality is provided by RTL2832 DVB-T demodulator. I suspect
it is originally planned for DAB and FM, but it could be abused general
SDR, due to modern silicon tuners that has wide frequency range and a
lot of configurable parameters (filters, gains, ...).

http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/44461Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Implement PLL lock control to get PLL lock flag status from tuner
synthesizer.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

There was 32-bit overflow on VCO frequency calculation which blocks
tuning to 1073 - 1104 MHz. Use 64 bit number in order to avoid VCO
frequency overflow.

After that fix device in question tunes to following range:
60 - 1104 MHz
1250 - 2207 MHz
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Implement gain and bandwidth controls using v4l2 control framework.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Driver conversion from proprietary DVB tuner model to more
general I2C driver model.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

rc_map_get() takes a single string literal for the module to load,
so make sure it cannot be used as a format string in the call to
request_module().
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The sizeimage is that of a single field, not that of a full frame.
That makes no sense, and in fact all drivers supporting ALTERNATE will
set sizeimage to that of a field.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Be more specific as to who has to fill in each field/flag: the driver
or the application.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The code said for (i = 0; i > 30; ++i) instead of i < 30.

Fix this and clean it up a bit at the same time.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Rename v4l2_format_sdr to v4l2_sdr_format in order to keep it in
line with other formats.
Reported-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Fix msi3101 driver v4l2-compliance issues.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Fix msi001 driver v4l2-compliance issues.

Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

That value is coming from the user and we need only ensure it is
reasonable. That was pointed by Hans when reviewing rtl2832_sdr driver.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>