The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written !…
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
[mchehab@s-opensoure.com: merge similar patches into one]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
The variables will be set to an appropriate value before usage.
Thus omit the explicit initialisation at the beginning.
[mchehab@s-opensource.com: fold similar patches into one]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
[mchehab@s-opensource.com: fold several similar patches into one]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since commit 29d2fef8be ("usb: catch attempts to submit urbs
with a vmalloc'd transfer buffer"), the AverMedia AverTV DVB-T
USB 2.0 (a800) fails to probe.
Cc: stable@vger.kernel.org
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the PLP given is NO_STREAM_ID_FILTER (~0u) don't try to set that into the PLP register. Set PLP to 0 instead.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the PLP given is NO_STREAM_ID_FILTER (~0u) don't try to set that into the PLP register. Set PLP to 0 instead.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This function is broken. It sets the wrong front_end to NULL. But it's
not used, so let's just delete it.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The dib9000_remove_slave_frontend() function isn't used.
I was reviewing it because my static checker claims it writes one
element beyond the end of the array. That's a false positive. What it
actually does is, if there are two or more front ends, then it prints a
debug message to say that it removed the first one, stored in
state->fe[1], and then it "removes" (scare quotes on purpose) the second
one, stored in state->fe[2]. Deleting a front end from the middle is
not really supported and breaks code like dib9000_release() which
assumes the first NULL front end marks the end of the list.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Refactor code in order to avoid identical code for different branches.
This issue was detected with the help of Coccinelle.
Addresses-Coverity-ID: 1226795
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since the cab_* codepath doesn't recognize QAM_AUTO, don't announce that
it is supported when it really isn't. Fixes ie. w_scan from
unconditionally using QAM_AUTO on DVB-C scans.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The demodulator supports symbol rates as low as 100Ksyms/s - the demod
setup in start() already handles such low symbol rates and reviewers
of stv0910 equipped cards even found and tested transponders with
SRs in that range. So, announce this in the fe_ops.
Cc: Ralph Metzler <rjkm@metzlerbros.de>
Cc: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Whenever write_reg() fails to open/close the demod's I2C gate, release the
lock to avoid deadlocking situations. If I2c gate open failed, there's no
need to hold a lock, and if close fails, the mutex_unlock() at the end of
the function is never reached, leaving the mutex_lock in locked state,
which in turn will cause potential for deadlocks. Thus, release the lock
on failure.
While we're touching gate_ctrl(), add some explanation about the need for
locking and the shared I2C bus/gate.
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This Kaffeine's BZ:
https://bugs.kde.org/show_bug.cgi?id=374693
affects SkyStar S2 PCI DVB-S/S2 rev 3.3 device. It could be due to
a Kernel bug.
While checking the Isil 6421, comparing with its manual, available at:
http://www.intersil.com/content/dam/Intersil/documents/isl6/isl6421a.pdf
It was noticed that, if the output load is highly capacitive, a different approach
is recomended when energizing the LNBf.
Also, it is possible to detect if a current overload is happening, by checking an
special flag.
Add support for it.
Tested on Skystar S2. Changes respect override_or option so should still work fine
on cx88 based cards which disable dynamic current limit.
Changes since v1:
v2 - fixed incorrect checking of i2c return values
v3 - fix if logic to check if dcl needs re-enabling
- respect override_or values which aim to disable dcl
- only do long sleep on overload if dcl enabled
- add short sleep before re-enabling dcl
- only check overload and potentially return EINVAL if device is on
v4 - revert v3 sleep logic changes to remove tuning delays
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jemma Denson <jdenson@gmail.com>
Cleans up smatch warning:
symbol 'stvlist' was not declared. Should it be static?
Patch originally submitted by Colin Ian King <colin.king@canonical.com>,
remainder after the merge of all other stv0910 fixes.
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since the driver now recognizes and supports more chip variants, reflect
this fact in the module description accordingly.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Acked-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The scrambling code has 4 bits. Fix the mask accordingly.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It should first read the status and then check if FE has lock.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This adds the frontend driver for the MaxLinear MxL5xx family of tuner-
demodulators, as used on Digital Devices MaxS4/8 four/eight-tuner cards.
The driver was picked from the dddvb vendor driver package and - judging
solely from the diff - has undergone a 100% rework:
- Silly #define's used to pass multiple values to functions were
expanded. This resulted in macro/register names not being usable
anymore for such occurences, but makes the code WAY more read-,
understand- and maintainable.
- CamelCase was changed to kernel_case
- All typedef were removed
- Overall code style was fixed, besides >80char lines in _defs.h and
_regs.h, checkpatch is happy.
- Also, signal stat acquisition was made to comply with the DVB API
ways to do these things.
Permission to reuse and mainline the driver code was formally granted by
Ralph Metzler <rjkm@metzlerbros.de>.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Mark lookup tables and fe_ops things const so the compiler can put them
into .rodata.
While at it, improve name and identifier strings (moddesc, fe_ops).
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix up all remainders reported by checkpatch-strict.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix up block comment style, whitespaces, c++ style comments et al.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fixes up all remainders reported by "checkpatch.pl --strict"
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This implements the diseqc_send_burst frontend op to support sending
mini-DISEQC bursts. Picked up from dddvb's driver package where this
specific block was disabled via #if 0/#endif, but is still working
according to feedback from upstream, so add it.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
According to the documentation, FE_SCALE_DECIBEL values should be assigned
to .svalue and not .uvalue, so let's do this. While at it, remove the
unneeded strength var from read_signal_strength().
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While cab_state->state gives a quite accurate indication of the demod
signal status, it might be incorrect if cab_algo() wasn't able to
determine the exact status, with cab_algo() being the only place where
this status was updated from, and it is only called upon tuning to new
parameters passed to set_frontend(). Thus, the status will be wrong
until the demod is retuned. With the cab_signal_type parsing in
read_status(), this results in unusual fe_states like FE_HAS_SIGNAL |
FE_HAS_CARRIER | FE_HAS_LOCK, which, while userspace applications check
for FE_HAS_LOCK and work fine, leads to missing CNR or UCB stats.
Fix this by re-reading CAB_FSM_STATUS and updating cab_state->state() in
read_status(). While at it, refactor the fsm/qamfeclock and the
fsm->signaltype parsing into separate functions to make things cleaner
and deduplicate code. Also, assume full QAM FEC lock equals full
FE_STATUS.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Don't populate array dib0090_tuning_table_cband_7090e_aci on the stack but
instead make it static. Makes the object code smaller by over 180 bytes:
Before:
text data bss dec hex filename
40052 7320 192 47564 b9cc dib0090.o
After:
text data bss dec hex filename
39780 7408 192 47380 b914 dib0090.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Don't populate const arrays on the stack but instead make them static.
Makes the object code smaller by over 1800 bytes:
Before:
text data bss dec hex filename
94100 9160 0 103260 1935c drxj.o
After:
text data bss dec hex filename
91044 10400 0 101444 18c44 drxj.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Don't populate arrays slowIncrDecLUT and fastIncrDecLUT on the stack but
instead make them static. Makes the object code smaller by over 100 bytes:
text data bss dec hex filename
27776 832 64 28672 7000 drxd_hard.o
text data bss dec hex filename
27530 976 64 28570 6f9a drxd_hard.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Discovered using w_scan when scanning DVB-T/T2: When w_scan goes from -T
to -T2, it does so without stopping the frontend using .sleep. Due to
this, the demod operation mode isn't re-setup, but as it still is in
STATE_ACTIVE_TC, PLP and T2 Profile are set up, but only retune_active()
is called, leaving the demod in T mode, thus not operable on any T2
frequency.
Fix this by putting the demod to sleep if priv->system isn't equal to
p->delsys. To properly accomplish this, sleep_tc() is split into
sleep_tc() and shutdown_tc(), where sleep_tc() will only perform the
sleep operation, while shutdown_tc() additionally performs the full
demod shutdown (to keep the behaviour when the .sleep FE_OP is called).
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Don't populate arrays on the stack but make them static. Makes
the object code smaller:
Before:
text data bss dec hex filename
89299 21704 64 111067 1b1db cxd2841er.o
After:
text data bss dec hex filename
85823 23432 64 109319 1ab07 cxd2841er.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check for i2c_algorithm structures that are only stored in
the algo field of an i2c_adapter structure. This field is
declared const, so i2c_algorithm structures that have this
property can be declared as const also.
This issue was identified using Coccinelle and the following
semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct i2c_algorithm i@p = { ... };
@ok@
identifier r.i;
struct i2c_adapter e;
position p;
@@
e.algo = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct i2c_algorithm i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Return 0 instead of -EINVAL in get_frontend if no demod mode is active.
This fixes ie. dvb-fe-tool getting confused and assuming a DVBv3 FE on idle
frontends when the FE has been put to sleep using sleep().
Also, in read_status(), don't immediately return when no demod is active,
so the remaining code has a chance to clear the signal statistics.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This adds a frontend driver for the ST STV6111 DVB-S/S2 tuners. Like the
stv0910 demod frontend driver, this driver originates from the Digital
Devices' dddvb vendor driver package as of version 0.9.29, and was cleaned
up aswell. No functionality had to be removed though. Any camel case has
been converted to kernel_case, fixup patch has been proposed upstream.
Permission to reuse and mainline the driver code was formally granted by
Ralph Metzler <rjkm@metzlerbros.de>.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This was missing from the frontend_ops.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Original code at least has some signed/unsigned issues, resulting in
values like 32dBm. Implement signal strength readout to work without
asking the attached tuner, and use a lookup table instead of log calc.
Values reported appear plausible, gathered from feedback from several
testers.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Implements stream_id filter and scrambling code setup in start() and also
sets FE_CAN_MULTISTREAM in frontend_ops. This enables the driver to
properly receive and handle multistream transponders, functionality has
been reported working fine by testers with access to such streams, in
conjunction with VDR on the userspace side.
The code snippet originates from the original vendor's dddvb driver
package and has been made working properly with the current in-kernel
DVB core API.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fixes smatch error:
drivers/media/dvb-frontends/stv0910.c:715 dvbs2_nbch() error: buffer overflow 'nbch[fectype]' 2 <= 28
Also, fixes the nbch array table by adding the DUMMY_PLF element at the top
to match the enums (table element order was off by one before).
Patch sent upstream aswell.
Cc: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This adds a multi frontend driver for the ST STV0910 DVB-S/S2 demodulator
frontends. The driver code originates from the Digital Devices' dddvb
vendor driver package as of version 0.9.29, and has been cleaned up from
core API usage which isn't supported yet in the kernel, and additionally
all obvious style issues have been resolved. All camel case and allcaps
have been converted to kernel_case and lowercase. Patches have been sent
to the vendor package maintainers to fix this aswell. Signal statistics
acquisition has been refactored to comply with standards.
Permission to reuse and mainline the driver code was formally granted by
Ralph Metzler <rjkm@metzlerbros.de>.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Tested-by: Richard Scobie <r.scobie@clear.net.nz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The stv0367 driver provide a lot of status on its state machine.
Change the logic to provide more information about frontend locking
status. Also, while any detailed status isn't available, provide a more
complete FE_STATUS for DVB-T.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Provide QAM/DVB-C signal strength in decibel scale. Values returned from
stv0367cab_get_rf_lvl() are good but need to be multiplied as they're in
1dBm precision.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since the other statistics are read when fe_status conditions are TRUE,
change the ucblocks readout logic to match this aswell.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
