Commit graph

16 commits

Author SHA1 Message Date
Mauro Carvalho Chehab
22c4a4e98e V4L/DVB (6320): v4l core: remove the unused .hardware V4L1 field
struct video_device used to define a .hardware field. While
initialized on severl drivers, this field is never used inside V4L.
However, drivers using it need to include the old V4L1 header.

This seems to cause compilation troubles with some random configs.
Better just to remove it from all drivers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22 12:01:24 -02:00
Kay Sievers
54bd5b66c8 V4L/DVB (6293): V4L: convert struct class_device to struct device
The currently used "struct class_device" will be removed from the
kernel. Here is a patch that converts all users in drivers/media/video/
to struct device.

Reviewed-by: Thierry Merle <thierry.merle@free.fr>
Reviewed-by: Mike Isely <isely@pobox.com>
Reviewed-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-10 00:03:14 -03:00
Mauro Carvalho Chehab
9c12224a60 V4L/DVB (6079): Cleanup: remove linux/moduleparam.h from drivers/media files
Since at least kernel 2.6.12-rc2, module.h includes moduleparm.h. This
patch removes all occurences of moduleparm.h from drivers/media files.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09 22:06:17 -03:00
Luca Risolia
3b2ae0be9e V4L/DVB (5766): ET61x251 driver updates
- Make the driver depend on V4L2 only (KConfig)
- Better and safe locking mechanism of the device structure on open(),
  close() and disconnect()
- Use kref for handling device deallocation
- Generic cleanups

Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-07-18 14:24:08 -03:00
Jan Engelhardt
c5da5afb9d V4L/DVB (5586): Use menuconfig objects II - V4L
Change Kconfig objects from "menu, config" into "menuconfig" so
that the user can disable the whole feature without having to
enter the menu first.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-05-09 10:12:39 -03:00
Luca Risolia
2656312724 V4L/DVB (5064): ET61X251 driver updates.
- Implement audio ioctl's and VIDIOC_ENUM_FRAMESIZES
- Documentation updates
- Generic improvements

Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:20 -02:00
Arjan van de Ven
fa027c2a0a [PATCH] mark struct file_operations const 4
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

[akpm@sdl.org: dvb fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:45 -08:00
Luca Risolia
5718bbd2d9 V4L/DVB (4865): Fix: Slot 0 not NULL on disconnecting SN9C10x PC Camera
The patch fix bug 5748.

Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-11-26 08:52:37 -02:00
Jeff Garzik
c12e3be086 V4L/DVB (4742): Drivers/media/video: handle sysfs errors
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-10-14 00:44:17 -03:00
David Howells
7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Mauro Carvalho Chehab
7565ab082d V4L/DVB (4064): No drivers should use VIDIOC_*_OLD
V4L core functions handle VIDIOC_*_OLD older ioctls.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25 02:05:04 -03:00
Mauro Carvalho Chehab
cd41e28e2d V4L/DVB (3774): Create V4L1 config options
V4L1 API is depreciated and should be removed soon from kernel. This patch
adds two new options, one to disable V4L1 drivers, and another to disable
V4L1 compat module. This way, it would be easy to check what still depends
on V4L1 stuff, allowing also to test if app works fine with V4L2 only support.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-05-12 19:54:53 -03:00
Michael Krufky
1864cfb153 V4L/DVB (3653h): Move usb v4l docs into Documentation/video4linux
- Move documentation for usb v4l devices from
  Documentation/usb to Documentation/video4linux.
- Removed trailing whitespace.
- Update Kconfig help text links to reflect the new file locations.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-04-02 04:55:56 -03:00
Michael Krufky
e4a25edb5e V4L/DVB (3653b): et61x251: fixed Kconfig menu and Makefile build configuration
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-04-02 04:55:25 -03:00
Mauro Carvalho Chehab
d56410e0a5 V4L/DVB (3599b): Whitespace cleanups under drivers/media
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-03-25 09:29:23 -03:00
Mauro Carvalho Chehab
9f6933be66 V4L/DVB (3599a): Move drivers/usb/media to drivers/media/video
Because of historic reasons, there are two separate directories with
V4L stuff. Most drivers are located at driver/media/video. However, some
code for USB Webcams were inserted under drivers/usb/media.

This makes difficult for module authors to know were things should be.
Also, makes Kconfig menu confusing for normal users.

This patch moves all V4L content under drivers/usb/media to
drivers/media/video, and fixes Kconfig/Makefile entries.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-03-25 09:29:04 -03:00