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path: root/drivers/media/video/em28xx/em28xx-core.c
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2008-04-26V4L/DVB (7734): em28xx: copy and paste error in em28xx_init_isocJanne Grunau
Fixes a copy and paste error in check of kzalloc return value. The check block was copied from the previous allocation but the variable wasn't exchanged. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7652): em28xx: Drop the severity level of the "urb resubmit failed"Devin Heitmueller
em28xx-core.c - Drop the severity level of the "urb resubmit failed" to debug, since it occurs every time a stream disconnects, which fills the dmesg log Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7615): em28xx: Provide the proper support for switching between ↵Mauro Carvalho Chehab
analog/digital Before this patch, HVR900/HVR950 were incorreclty going back to analog. The result is that only digital were working. This patch provides the proper setup for analog/digital and tuner callback. It also properly resets analog into a sane state at open(). Thanks to Steven Toth <stoth@linuxtv.org> and Michael Krufky <mkrufky@linuxtv.org> for helping to set the proper parameters to GPO/GPIO em2883 ports. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7614): em28xx-core: fix some debug printk's that wrongly received ↵Mauro Carvalho Chehab
KERN_INFO Those printk's were adding more info to a line that were already being printed. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7613): em28xx: rename registersMauro Carvalho Chehab
Now, all registers will follow the same convension: EM28XX_R<reg_number>_<reg_name> This allows to associate a register with its value, and also with a canonical name. Also, registers that are specific to a given chip were renamed accordingly, as EM2800_foo (for 2800 only registers) or EM2880_foo (for registers that started to appear on em2880). Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7610): em28xx: Select reg wait time based on chip IDMauro Carvalho Chehab
This is more conservative than just removing the msleep() from em28xx_write_regs_req(), since some old hardware may still need it. So, it will remove the sleep time only for those chips where this removal were tested. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7609): em28xx-core: speed-up firmware loadDevin Heitmueller
em28xx-core.c: - Remove sleep in i2c message routine which slows down i2c by a factor 10x. Load time for BASE firmware went from 13s to .973s Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7607): CodingStyle fixesDouglas Schilling Landgraf
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7604): em28xx-dvb: Fix analog modeMauro Carvalho Chehab
The analog entries are wrong. Fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7602): em28xx: generalise URB setup codeAidan Thornton
Move the URB setup and management code to em28xx-core.c and generalise it slighlty so that the DVB code can use it. Signed-off-by: Aidan Thornton <makosoft@googlemail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7595): Improve generic support for setting gpio valuesMauro Carvalho Chehab
em28xx based devices with xc3028 may require some specific gpio values. This patch adds a generic handling for such values. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7567): em28xx: Some cleanupsMauro Carvalho Chehab
Removes some fields from data structs. There are some fields that are just caching some calculus for buffer size. The calculus were moved to the places it were needed and the now unused fields were removed. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7540): em28xx: convert to use videobuf-vmallocMauro Carvalho Chehab
The usage of videobuf-vmalloc allows to cleanup em28xx logic. Also, it reduced its size by about 5.42% on i386 arch (and about 7.5% on x86_64): 39113 4876 40 44029 abfd old/em28xx.ko 36731 4868 40 41639 a2a7 /home/v4l/master/v4l/em28xx.ko Also, the preliminary tests, made on a single core 1.5 MHz Centrino showed that CPU usage reduced from 42%-75% to 28%-33% (reports from "top") command. A test with time command presented an even better result: This is the performance tests I did, running code_example to get 1,000 frames @29.995 Hz (about 35 seconds of stream), tested on a i386 machine, running at 1,5GHz: The old driver: $ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example 0:34.21: 8.22s User time, 25.16s Kernel time, 97% CPU used The videobuf-based driver: $ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example 0:35.36: 0.01s User time, 0.05s Kernel time, 0% CPU used Conclusion: The time consumption to receive the stream where reduced from about 33.38 seconds to 0.05 seconds. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7522): media/video/em28xx replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7331): Fix em2800 altsetting selectionSascha Sommer
Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24V4L/DVB (7094): static memoryDouglas Schilling Landgraf
- Static memory is always initialized with 0. - Replaced in some cases C99 comments for /* */ Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-03-20V4L/DVB (7291): em28xx: correct use of and fixAndrew Morton
be less silly while we're there. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-03-20V4L/DVB (7285): em28xx: Correct use of ! and &Julia Lawall
In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, a bug was fixed that involved converting !x & y to !(x & y). The code below shows the same pattern, and thus should perhaps be fixed in the same way. This is not tested and clearly changes the semantics, so it is only something to consider. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E1,E2; @@ ( !E1 & !E2 | - !E1 & E2 + !(E1 & E2) ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7180): em28xx: add URB_NO_TRANSFER_DMA_MAP, since urb->transfer_dma ↵Mauro Carvalho Chehab
is set Thanks to Alan Stern <stern@rowland.harvard.edu> for pointing this issue. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7179): Allow more than one em28xx boardMauro Carvalho Chehab
em28xx driver is capable of handling more than one usb device. However, isoc transfers require a large amount of data to be transfered. Before this patch, just one em28xx board were enough to allocate more than 50% URBs: T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8 B: Alloc=480/800 us (60%), #Int= 0, #Iso= 2 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 So, only one board could use an USB host at the same time. After the patch, it is possible to use more than one em28xx at the same time, on the same usb host, if the image size is slower or equal to 345600, since those images will require about 30% of the URBs: T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8 B: Alloc=232/800 us (29%), #Int= 0, #Iso= 2 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 So, in thesis, after the patch, it would be possible to use up to 3 boards by each usb host, if the devices are generating small images. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7163): em28xx: makes audio settings more stableMauro Carvalho Chehab
Improves audio configurations on em28xx: - mutes audio before changing amux; - adds a delay after setting audio src; - waits up to 50ms for ac97 busy. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7161): em28xx: Fix printing debug values higher than 127Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7158): Fix em28xx audio initializationMauro Carvalho Chehab
AC97 register initialization seem to always be needed. This patch fixes audio for Prolink/Pixelview USB2 board. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7156): em28xx/em28xx-core.c: fix use of potentially uninitialized ↵Andrew Morton
variable drivers/media/video/em28xx/em28xx-core.c: In function 'em28xx_set_audio_source': drivers/media/video/em28xx/em28xx-core.c:276: warning: 'no_ac97' may be used uninitialized in this function This looks like a genuine bug to me. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18V4L/DVB (7106): em28xx/: make 2 functions staticAdrian Bunk
This patch makes the following needlessly global functions static: - em28xx-core.c:em28xx_write_reg_bits() - em28xx-video.c:em28xx_vdev_init() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6955): Properly implement 12MHz I2S supportMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25V4L/DVB (6947): Improve audio setup handlingMauro Carvalho Chehab
It is possible to select audio inputs via em28xx or via ac97 functions. This patch allows configuring a board to use either one way. It also do some cleanups at audio setup configurations. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-22V4L/DVB (6350): V4L: possible leak in em28xx_init_isocFlorin Malita
Coverity (CID 1929) spotted the following: if a transfer buffer allocation fails, the last allocated urb is leaked (it hasn't been stored in dev->urb[] yet so em28xx_uninit_isoc misses it). The patch also includes a small typo fix. Signed-off-by: Florin Malita <fmalita@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-10-09V4L/DVB (6079): Cleanup: remove linux/moduleparam.h from drivers/media filesMauro Carvalho Chehab
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>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
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)
2006-06-25V4L/DVB (3963): Em28xx/: possible cleanupsAdrian Bunk
This patch contains the following possible cleanups: - make the following needlessly global functions static: - em28xx-core.c: em28xx_accumulator_set() - em28xx-core.c: em28xx_capture_area_set() - em28xx-core.c: em28xx_scaler_set() - em28xx-core.c: em28xx_isocIrq() - remove the following unused EXPORT_SYMBOL's: - em28xx-cards.c: em28xx_boards - em28xx-cards.c: em28xx_bcount - em28xx-cards.c: em28xx_id_table Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-25V4L/DVB (3715): Change all emails to the currently used one.Mauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-02-07V4L/DVB (3306): Fixed i2c return value, conversion mdelay to msleepMarkus Rechberger
fixed i2c return value, conversion mdelay to msleep Signed-off-by: Markus Rechberger <mrechberger@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-01-23V4L/DVB (3431): fixed spelling error, exectuted --> executed.Michael Krufky
- fixed spelling error, exectuted --> executed. Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-01-09V4L/DVB (3269): ioctls cleanups.Michael Krufky
- Now, all internal ioctls are at v4l2-common.h - removed unused ioctl at saa6752hs.h - all debug ioctl code moved to v4l2-common.c - removed duplicated stuff from other cards Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2006-01-09V4L/DVB (3123b): syncs V4L subsystem tree with kernelMauro Carvalho Chehab
- This patch makes kernel in sync with v4l subsystem tree. - some lines reordered to be sync. - some reduntant codes removed. Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2006-01-09V4L (0978): 64-bit fixes for removing warnings on compat_ioctl32Hans Verkuil
- 64-bit fixes for removing warnings on compat_ioctl32. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2005-12-19[PATCH] V4L/DVB (3188): Fix compilation failure with gcc 2.95.3.Jean Delvare
- Fix compilation failure with gcc 2.95.3. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2005-12-15[PATCH] em28xx: %zd for size_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12[PATCH] V4L/DVB: (3113) Convert em28xx to use vm_insert_page instead of ↵Sascha Sommer
remap_pfn_range Convert em28xx to use vm_insert_page instead of remap_pfn_range Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Michael Krufky <mkrufky@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12[PATCH] V4L/DVB: (3086c) Whitespaces cleanups part 4Mauro Carvalho Chehab
Clean up whitespaces at v4l/dvb files Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-01[PATCH] V4L: Makes needlessly global code staticAdrian Bunk
This patch makes needlessly global code static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] V4L: 920: fixed autodetection of max size by if alternate settingMauro Carvalho Chehab
- Fixed autodetection of max size by if alternate setting - Fixed some debug messages Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] V4L: 907: em28xx cleanups and fixesMauro Carvalho Chehab
- Em28xx cleanups and fixes. - Some cleanups and audio amux adjust. - em28xx will allways try, by default, the biggest size alt. - Fixes audio mux code. - Fixes some logs. - Adds support for digital output for WinTV USB2 board. Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 886: renamed common structures to em28xxMauro Carvalho Chehab
- Renamed common structures to em28xx Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 877: module em2820 renamed to em28xx and moved to v4l dirMauro Carvalho Chehab
- Module em2820 renamed to em28xx and moved to V4L dir. Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 864: improved isoc error detectionMauro Carvalho Chehab
- Improved isoc error detection. Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 850: update em2800 scaler code and comments based on info from ↵Sascha Sommer
empiatech - Update em2800 scaler code and comments based on info from empiatech Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Markus Rechberger <mrechberger@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 802: replaced kmalloc kfree with usb buffer alloc usb buffer ↵Markus Rechberger
free to get - Replaced kmalloc/kfree with usb_buffer_alloc/usb_buffer_free to get Signed-off-by: Markus Rechberger <mrechberger@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09[PATCH] v4l: 800: whitespace cleanupsMauro Carvalho Chehab
- Whitespace Cleanups. Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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