Commit Graph

11 Commits

Author SHA1 Message Date
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00
Arnd Bergmann 8ff230fb4f media: tuners: tda8290: reduce stack usage with kasan
With CONFIG_KASAN enabled, we get a relatively large stack frame in one function

drivers/media/tuners/tda8290.c: In function 'tda8290_set_params':
drivers/media/tuners/tda8290.c:310:1: warning: the frame size of 1520 bytes is larger than 1024 bytes [-Wframe-larger-than=]

With CONFIG_KASAN_EXTRA this goes up to

drivers/media/tuners/tda8290.c: In function 'tda8290_set_params':
drivers/media/tuners/tda8290.c:310:1: error: the frame size of 3200 bytes is larger than 3072 bytes [-Werror=frame-larger-than=]

We can significantly reduce this by marking local arrays as 'static const', and
this should result in better compiled code for everyone.

[mchehab@s-opensource.com: fix a trivial merge conflict]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-14 12:16:05 -05:00
Mauro Carvalho Chehab 01a26ff99c media: tda8290: initialize agc gain
The tuning logic at tda8290 relies on agc_stat and
adc_sat to be initialized. However, as warned by smatch:

	drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'agc_stat'.
	drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'adc_sat'.
	drivers/media/tuners/tda8290.c:262 tda8290_set_params() error: uninitialized symbol 'adc_sat'.

That could cause an erratic behavior if PLL is not locked,
as the code will only work if
	!(pll_stat & 0x80) && (adc_sat < 20)

So, initialize it to zero, in order to let the code below
to be called, with should give more chances to adjust the
tuner gain, in order to get a PLL lock.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-11 13:04:50 -05:00
Max Kellermann bd336e6344 [media] dvb: make DVB frontend *_ops instances "const"
These are immutable.  Making them "const" allows the compiler to move
them to the "rodata" section.

Note that cxd2841er_t_c_ops cannot be made "const", because
cxd2841er_attach() modifies it.  Ouch!

[mchehab@s-opensource.com: fix merge conflicts]
Signed-off-by: Max Kellermann <max.kellermann@gmail.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-11-18 15:00:22 -02:00
Mauro Carvalho Chehab 8ca2e927eb [media] tuners: don't break long lines
Due to the 80-cols restrictions, and latter due to checkpatch
warnings, several strings were broken into multiple lines. This
is not considered a good practice anymore, as it makes harder
to grep for strings at the source code.

As we're right now fixing other drivers due to KERN_CONT, we need
to be able to identify what printk strings don't end with a "\n".
It is a way easier to detect those if we don't break long lines.

So, join those continuation lines.

The patch was generated via the script below, and manually
adjusted if needed.

</script>
use Text::Tabs;
while (<>) {
	if ($next ne "") {
		$c=$_;
		if ($c =~ /^\s+\"(.*)/) {
			$c2=$1;
			$next =~ s/\"\n$//;
			$n = expand($next);
			$funpos = index($n, '(');
			$pos = index($c2, '",');
			if ($funpos && $pos > 0) {
				$s1 = substr $c2, 0, $pos + 2;
				$s2 = ' ' x ($funpos + 1) . substr $c2, $pos + 2;
				$s2 =~ s/^\s+//;

				$s2 = ' ' x ($funpos + 1) . $s2 if ($s2 ne "");

				print unexpand("$next$s1\n");
				print unexpand("$s2\n") if ($s2 ne "");
			} else {
				print "$next$c2\n";
			}
			$next="";
			next;
		} else {
			print $next;
		}
		$next="";
	} else {
		if (m/\"$/) {
			if (!m/\\n\"$/) {
				$next=$_;
				next;
			}
		}
	}
	print $_;
}
</script>

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-10-21 10:08:13 -02:00
Hans Verkuil 215cedec37 [media] media: remove emacs editor variables
1) This is not allowed by the kernel coding style
2) Just configure your editor correctly
3) It's really ugly

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-12-22 17:52:20 -02:00
Hans Verkuil dfc2e12df0 [media] tuner-core/simple: get_rf_strength can be tuner mode specific
The get_rf_strength op in tuner-simple is valid only for the radio mode.
But due to the way get_signal in analog_demod_ops was designed it would
overwrite the signal value with a bogus value when in TV mode.
Pass a pointer to the signal value instead, and when not in radio mode
leave it alone in the tuner-simple.
This broke in commit 030755bde4
(tuner-core: call has_signal for both TV and radio) in kernel 3.6. Before
that this was working correctly. That commit did the right thing, but what
wasn't realized at the time was that tuner-simple should have been updated
as well to restrict setting the signal strength to the radio mode only.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-14 19:44:50 -03:00
Ondrej Zary 1bacb2df3b [media] tda8290: change magic LNA config values to enum
Use enum instead of magic values for LNA config in tda8290.
Update tda827x, tda18271 and saa7134 to use the enum too.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-08 07:05:15 -03:00
Ondrej Zary 5b0e5350ce [media] tda8290: Allow custom std_map for tda18271
Allow specifying a custom std_map for tda18271 by external configuration.
This is required by cards that require custom std_map for analog TV or radio,
like AverMedia A706.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-08 07:01:15 -03:00
Ondrej Zary 2f719f7a9a [media] tda8290: Allow disabling I2C gate
Allow disabling I2C gate handling by external configuration.
This is required by cards that have all devices on a single I2C bus,
like AverMedia A706.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-08 07:00:47 -03:00
Mauro Carvalho Chehab ccae7af2bf [media] common: move media/common/tuners to media/tuners
Move the tuners one level up, as the "common" directory will be used
by drivers that are shared between more than one driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-13 23:40:28 -03:00