If a new vb buf is added to vb queue, the queue is
empty and steaming, dma should be started.
Signed-off-by: Songjun Wu <songjun.wu@microchip.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Changing available_protocols to atomic64_t allows to get rid of the
mutex protecting access to the variable. This helps to simplify
the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

If 'dma_alloc_coherent()' returns NULL, 'vpu_alloc_ext_mem()' will
return 0 which means success.
Return -ENOMEM instead.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

During sensors binding, there is a window where the sensor is switched
off, while there is a call it to set a new format, which can end up in
an access to the sensor, especially an I2C based sensor.

Remove this window by activating the sensor.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Previously, width of 720 was used, but it gives 16-pixel wide black bar
at right side of encoded picture.
Signed-off-by: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fix to return error code -ENODEV from the error handling case
instead of 0(err maybe overwrited to 0 in the for loop), as
done elsewhere in this function.

[mchehab@s-opensource.com: remove a now uneeded set for err = -ENODEV]
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Fix to return error code -EINVAL from the platform_get_resource() error
handling case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

It's not necessary to free memory allocated with devm_kzalloc
and using kfree leads to a double free.

Fixes: 7aae6e2d ("[media] Add GS1662 driver, a video serializer")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Remove .owner field if calls are used which set it automatically.

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Moving the pxa_camera driver from soc_camera lots the implied
VIDEO_V4L2 Kconfig dependency, and building the driver without
V4L2 results in a kernel that cannot link:

drivers/media/platform/pxa_camera.o: In function `pxa_camera_remove':
pxa_camera.c:(.text.pxa_camera_remove+0x10): undefined reference to `v4l2_clk_unregister'
pxa_camera.c:(.text.pxa_camera_remove+0x18): undefined reference to `v4l2_device_unregister'
drivers/media/platform/pxa_camera.o: In function `pxa_camera_probe':
pxa_camera.c:(.text.pxa_camera_probe+0x458): undefined reference to `v4l2_of_parse_endpoint'
drivers/media/v4l2-core/videobuf2-core.o: In function `__enqueue_in_driver':
drivers/media/v4l2-core/videobuf2-core.o: In function `vb2_core_streamon':
videobuf2-core.c:(.text.vb2_core_streamon+0x1b4): undefined reference to `v4l_vb2q_enable_media_source'
drivers/media/v4l2-core/videobuf2-v4l2.o: In function `vb2_ioctl_reqbufs':
videobuf2-v4l2.c:(.text.vb2_ioctl_reqbufs+0xc): undefined reference to `video_devdata'

This adds back an explicit dependency.

Fixes: 3050b998 ("[media] media: platform: pxa_camera: move pxa_camera out of soc_camera")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

There is only one waiter for the completion, therefore there
is no need to use complete_all(). Let's make that clear by
using complete() instead of complete_all().

While we are at it, we do a small optimization with the
reinitialization of the completion before we use it.

The usage pattern of the completion is:

waiter context                          waker context

send_packet()
  reinit_completion()
  usb_sumbit_urb()
  wait_for_completion_interruptible()

                                        usb_tx_callback()
                                          complete()

                                        imon_disconnect()
                                          complete()
Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

There is only one waiter for the completion, therefore there is no need
to use complete_all(). Let's make that clear by using complete() instead
of complete_all().

While we are at it, we do a small optimization with the reinitialization
of the completion before we use it.

The usage pattern of the completion is:

waiter context                          waker context

send_packet()
  init_completion()
  usb_submit_urb()
  wait_for_completion_interruptible()

                                        usb_tx_callback()
                                          complete()

                                        imon_disonnect()
                                          complete()
Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Use a type with explicit endianness in machine to big endian conversion.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation states that the "default-input" property should reside
directly in the node of the device.  This adjusts the parsing to make the
implementation consistent with the documentation.

Based on patch by William Towle <william.towle@codethink.co.uk>.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The text states that default-input is an endpoint property, but in the
example it is a device property.

The default input is a property of the chip, not of a particular port, so
the example makes more sense.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The advertised V4L2 pixel format and Media Bus code don't match.
The current media bud code advertised is MEDIA_BUS_FMT_YUYV8_2X8
which does not reflect what the encoder actually outputs.
This encoder generate MEDIA_BUS_FMT_UYVY8_2X8 so advertise as such.
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Function ite_set_carrier_params() uses variable use_demodulator after
having initialized it to false in some if branches, but this variable is
never set to true otherwise.

This bug has been found using clang -Wsometimes-uninitialized warning
flag.

Fixes: 620a32bb ("[media] rc: New rc-based ite-cir driver for
several ITE CIRs")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

In mb86a20s_read_status_and_stats(), when mb86a20s_read_status() fails,
the function returns the value in variable rc without initializing it
first. Fix this by propagating the error code from variable status_nr.

This bug has been found using clang and -Wsometimes-uninitialized
warning flag.
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

TechnoTrend TT-connect S2-4650 CI seems to be a variation of
the DVBSky S960CI device.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

The variable name is always assigned to a literal string in the
proceeding switch statement, so it is never null and hence the
null check is redundant. Remove null the check.
Signed-off-by: Colin Ian King <colin.king@canonical.com>

We get 1 warning when building kernel with W=1:
drivers/media/platform/coda/coda-h264.c:22:5: warning: no previous prototype for 'coda_h264_padding' [-Wmissing-prototypes]

In fact, this function is declared in coda.h, so this patch
add missing header dependencies.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>

cx24120_set_frontend currently allows invalid delivery system types
other than SYS_DVBS2 and SYS_DVBS.  Fix this by returning -EINVAL
for invalid values.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jemma Denson <jdenson@gmail.com>

Add a new USB ID for EVOLVEO XtraTV stick.

[mchehab@s-opensource.org: fix patch and make checkpatch happy]
Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Some devices have invalid baSourceID references, causing uvc_scan_chain()
to fail, but if we just take the entities we can find and put them
together in the most sensible chain we can think of, turns out they do
work anyway. Note: This heuristic assumes there is a single chain.

At the time of writing, devices known to have such a broken chain are
  - Acer Integrated Camera (5986:055a)
  - Realtek rtl157a7 (0bda:57a7)
Signed-off-by: Henrik Ingo <henrik.ingo@avoinelama.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Instead of using codeblock for the cardlists, use tables, in
order to improve their visual when presenting them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

For those cameras that were missing descriptions, update using
some web research:
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_STV0680.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_ZC3XX.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_KINECT.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_SPCA561.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_VICAM.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_DTCS033.html
	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/564979
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_PAC7302.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_SONIXB.html
	https://cateee.net/lkddb/web-lkddb/USB_GSPCA_SONIXJ.htmlSigned-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

There are several missing USB IDs that are defined on gspca
drivers. Add them.

The missing entries were found/created using the following script:

<script>
use strict;
use File::Find;

my $src = "drivers/media/usb/gspca/";
my $table = 0;
my %data;

my $id;

my $len = 0;

open IN, "Documentation/media/v4l-drivers/gspca-cardlist.rst";
while (<IN>) {
	if (m/^=+\s+=+\s+=+$/) {
		$table++;
		next;
	}
	next if ($table != 2);
	if (m/^(\S+)\s+(\S+)\s+(.*)/) {
		$id = "$1_$2";
		$data{$id}->{driver} = $1;
		$data{$id}->{usb_id} = $2;
		$data{$id}->{name} = $3;
		$data{$id}->{valid} = 0;

		$len = length($3) if (length($3) > $len);
	}
}
close IN;

sub parse_dir {
        my $file = $File::Find::name;

	open IN, $file;

	my $driver = $file;

	$driver =~ s,($src),,;

	$driver =~ s,/.*,,;
	$driver =~ s,\.c$,,;

	while (<IN>) {
		next if (m,/\*.*USB_DEVICE,);
		if (m/USB_DEVICE[^\(]*\(\s*0x(\S+)\s*\,\s*0x(\S+)\)(.*)/) {
			my $n = "$1:$2";
			my $o = $3;
			$id = "${driver}_$n";

			$data{$id}->{valid} = 1;

			next if (defined $data{$id}->{driver});

			$data{$id}->{driver} = $driver;
			$data{$id}->{usb_id} = $n;

			if ($o =~ m,\/\*\s*(.*)\*\/,) {
				$n = $1;
				$n =~ s/\s+//;
				$data{$id}->{name} = $n;
			} else {
				$data{$id}->{name} = "";
			}
		}
	}
	close IN;
}

find({wanted => \&parse_dir, no_chdir => 1}, $src);

print "The gspca cards list\n";
print "====================\n\n";
print "The modules for the gspca webcam drivers are:\n\n";
print "- gspca_main: main driver\n";
print "- gspca\\_\\ *driver*: subdriver module with *driver* as follows\n\n";
print "=========	=========	" . "=" x $len . "\n";
print "*driver*	vend:prod	Device\n";
print "=========	=========	" . "=" x $len . "\n";

foreach my $id (sort { $data{$a}->{usb_id} . $data{$a}->{driver} cmp $data{$b}->{usb_id} . $data{$b}->{driver} } keys %data) {
	next if (!$data{$id}->{valid});

	my $s = sprintf "%-15s %s\t%s\n",
		$data{$id}->{driver}, $data{$id}->{usb_id}, $data{$id}->{name};

	# Replace tabs by spaces
	$s =~ s/[ \t]+$//;
        $s =~ s<^ {8}> <\t>;
        $s =~ s<^ {1,7}\t> <\t>;
        $s =~ s< {1,7}\t> <\t>;

	printf $s;
}
print "=========	=========	" . "=" x $len . "\n";
</script>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Some entries are out of order.

While here, clear spaces/tabs.

The content remains the same, with the exeption of one duplicated
entry from the same driver, where two different brand names share
the same entry. The content of such cell was merged, using a
comma.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

That makes easier to parse the names, in order to sync it
with gspca-cardlist.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Keeping Documentation/media/v4l-drivers/gspca-cardlist.rst in
sync with the gspca script requires a parser. Simplify the
commented line, to make the parser work better.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Support both the HSV24 and HSV32 formats. From a hardware point of view
pretend the formats are RGB, the RPF and WPF will just pass the data
through without performing any processing.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Support HSV encoding. Most of the logic is replicated from ycbcr_enc.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Describe the hsv_enc field and its use.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Some hardware maps the Hue between 0 and 255 instead of 0-179. Support
this format with a new field hsv_enc.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Avoid duplicated clamps when possible.
Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

precalculate_color() had a optimization that avoided duplicated
conversion for YUV formats. This optimization did not take into
consideration YUV444, YUV555, YUV565 or limited range quantization.

This patch keeps the optimization, but fixes the wrong handling.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Simplifies handling of Gray formats.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

r_y and g_u now also contain the H and V components on the HSV formats.
Rename the variables to reflect this.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

This patch adds support for V4L2_PIX_FMT_HSV24 and V4L2_PIX_FMT_HSV32.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Replace is_yuv with color_enc Which can be used by other
color encodings such us HSV.

This change should ease the review of the following patches.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>