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* V4L/DVB (9816): v4l2-int-if: add three new ioctls for std handling and routingVaibhav Hiremath2008-12-30
| | | | | | | | | | | | | These changes are needed for the new TVP514x driver. Signed-off-by: Brijesh Jadav <brijesh.j@ti.com> Signed-off-by: Hardik Shah <hardik.shah@ti.com> Signed-off-by: Manjunath Hadli <mrh@ti.com> Signed-off-by: R Sivaraj <sivaraj@ti.com> Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Signed-off-by: Karicheri Muralidharan <m-karicheri2@ti.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9815): omap2: add OMAP2 camera driver.Sakari Ailus2008-12-30
| | | | | | | | | | | | Add a driver for the OMAP2 camera block. OMAP2 is used in e.g. Nokia N800/N810 internet tablet. This driver uses the V4L2 internal ioctl interface. Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com> Signed-off-by: Trilok Soni <soni.trilok@gmail.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9812): [PATCH] short help for Technisat cards to select the right ↵Patrick Boettcher2008-12-30
| | | | | | | | | | | configuration This patch adds a short help for Technisat cards to help the user selecting the right configuration for his card(s). Signed-off-by: Uwe Bugla <uwe.bugla@gmx.de> Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9811): Add support for the CX24113 DVB-S tuner driverPatrick Boettcher2008-12-30
| | | | | | | | This commit adds support for the CX24113 DVB-S tuner driver and thus support for the Technisat Skystar2 revision 2.8. The driver was created with the help of Technisat. Thank you very much. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9810): uvcvideo: Add a device quirk to prune bogus controls.Laurent Pinchart2008-12-30
| | | | | | | | | Bogus controls currently include processing unit auto controls for which no corresponding manual control is available. Such auto controls make little sense if any, and are known to crash at least the SiGma Micro webcam. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9809): uvcvideo: Add nodrop module parameter to turn incomplete ↵Laurent Pinchart2008-12-30
| | | | | | | | | | | frame drop off. The driver drops incomplete uncompressed video frames to avoid confusing userspace with corrupt data. Add a nodrop module parameter to turn that behaviour off and make all frames available to userspace. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9806): cx18: Enable raw VBI captureAndy Walls2008-12-30
| | | | | | | | | A combined authorship patch from Hans Verkuil and Andy Walls. Raw VBI can now be captured but requires a video capture to be in progress as well. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9805): cx18: Port fix for raw/sliced VBI mixup from ivtv and cx25840Andy Walls2008-12-30
| | | | | | | | | | | | | | | | This is a port of the fixes Hans Verkuil made for ivtv/cx25840: The service_set field was used to determine whether raw or sliced VBI was desired. This is incorrect since it is perfectly valid to select sliced VBI with a service_set of 0. Instead the driver should check on VIDIOC_S_FMT whether the type field matches the raw or sliced VBI type. Updated the cx18 driver accordingly, including an additional check in cx18_start_v4l2_encode_stream() that didn't exist in ivtv. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9804): cx18: Avoid making firmware API calls with the queue lock heldAndy Walls2008-12-30
| | | | | | | | | | | | | cx18: Avoid making firmware API calls with the queue lock held. The source of MPEG strem corruption when not holding the queue lock was found to be that the MPEG buffer could be retrieved by the user app before it was sync'ed for the host cpu. Incoming buffers are now sync'ed before being put on q_full and releasing the queue lock. We can thus avoid the sometimes lengthy call to the firmware for CPU_DE_SET_MDL while holding the queue lock, so we can get better performance. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9803): cx18: Increment version number due to siginificant buffering ↵Andy Walls2008-12-30
| | | | | | | | | | changes cx18: Increment version number due to siginificant buffering changes. Now version 1.0.4 Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9802): cx18: Add module parameters for finer control over buffer ↵Andy Walls2008-12-30
| | | | | | | | | | | | allocations cx18: Add module parameters for finer control over buffer allocations. User now has the option of setting smaller buffers to get lower latency transfers from the encoder. User can also now set the number of buffers used for a stream explicitly. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9801): cx18: Allow more than 63 capture buffers in rotation per streamAndy Walls2008-12-30
| | | | | | | | | | cx18: Allow more than 63 capture buffers in rotation per stream. Implement q_busy to hold buffers the firmware has for use. q_free holds truly unused buffers in a pool. New buffers are given to the firmware as soon as the firmware returns one, if there are any to give to the firmware. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9800): cx18: Eliminate q_io from stream buffer handlingAndy Walls2008-12-30
| | | | | | | | | | Eliminate q_io from stream buffer handling in anticipation of upcoming changes in buffer handling. q_io was a holdover from ivtv and it's function in cx18 was trivial and not necessary. We just push things back onto the front of q_full now, instead of maintaining a 1 buffer q_io queue. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9799): em28xx: fix Kworld Hybrid 330 (A316) supportMauro Carvalho Chehab2008-12-30
| | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9798): saa7134: add analog and DVB-T support for Medion/Creatix CTX946Hermann Pitton2008-12-30
| | | | | | | | How to enable the mpeg encoder is not found yet. The card comes up with gpio 0x0820000 for DVB-T. Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9797): Fix stv0299 support in dw2102 USB DVB-S/S2 driverIgor M. Liplianin2008-12-30
| | | | | | | | | register 0x00 contains 0xa1 for STV0299 and STV0299B register 0x00 might contain 0x80 when returning from standby Signed-off-by: Igor M. Liplianin <liplianin@me.by> Acked-by: Sergey Silkin <neovision@rambler.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9796): drivers/media/video/cx88/cx88-alsa.c: Adjust error-handling codeJulia Lawall2008-12-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the function cx88_audio_initdev, the value card has been created using snd_card_new. The other error handling code in this function frees the value using snd_card_free. I have thus changed the first error case to do the same. On the other hand, it may be that card is not sufficiently initialized at this point to use snd_card_free, in which case something else should be done to free the memory in the error case. In the function snd_cx88_create the call kfree(chip) in one error case looks suspicious, both because it is not done in the other error code, and because chip points into the middle of the memory allocated by snd_card_new, ie it is not itself associated with a separate kmalloc. Therefore I have removed it. The semantic match that finds the first problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S,S1; position p1,p2,p3; expression E,E1; type T,T1; expression *ptr != NULL; @@ ( if ((x@p1 = snd_card_new(...)) == NULL) S | x@p1 = snd_card_new(...); ) ... when != snd_card_free(...,(T)x,...) when != if (...) { <+... snd_card_free(...,(T)x,...) ...+> } when != true x == NULL || ... when != x = E when != E = (T)x when any ( if (x == NULL || ...) S1 | if@p2 (...) { ... when != snd_card_free(...,(T1)x,...) when != if (...) { <+... snd_card_free(...,(T1)x,...) ...+> } when != x = E1 when != E1 = (T1)x ( return \(0\|<+...x...+>\|ptr\); | return@p3 ...; ) } ) @ script:python @ p1 << r.p1; p3 << r.p3; @@ print "* file: %s snd_card_new: %s return: %s" % (p1[0].file,p1[0].line,p3[0].line) // </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@redhat.com>
* V4L/DVB (9795): Add Compro VideoMate E650F (DVB-T part only).Igor M. Liplianin2008-12-30
| | | | | | | | | Add Compro VideoMate E650F (DVB-T part only). The card based on cx23885 PCI-Express chip, xc3028 tuner and ce6353 demodulator. Cc: Steven Toth <stoth@linuxtv.org> Signed-off-by: Igor M. Liplianin <liplianin@me.by> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9793): em28xx: Add specific entry for WinTV-HVR 850Douglas Schilling Landgraf2008-12-30
| | | | | | | Added specific entry for WinTV-HVR 850 Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9791): pxa-camera: pixel format negotiationRobert Jarzmik2008-12-30
| | | | | | | | | | | | | | Use the new format-negotiation infrastructure, support all four YUV422 packed and the planar formats. The new translation structure enables to build the format list with buswidth, depth, host format and camera format checked, so that it's not done anymore on try_fmt nor set_fmt. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9790): soc-camera: pixel format negotiation - core supportGuennadi Liakhovetski2008-12-30
| | | | | | | | | | | | | | | Allocate and fill a list of formats, supported by this specific camera-host combination. Use it for format enumeration. Take care to stay backwards-compatible. Camera hosts rely on sensor formats available, as well as host specific translations. We add a structure so that hosts can define a translation table and use it for format check and setup. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9789): soc-camera: add a per-camera device host private data pointerGuennadi Liakhovetski2008-12-30
| | | | | | | | This pointer will be used by pxa_camera.c to point to its pixel format data. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9788): soc-camera: simplify namingGuennadi Liakhovetski2008-12-30
| | | | | | | | | | We anyway don't follow the s_fmt_vid_cap / g_fmt_vid_cap / try_fmt_vid_cap naming, and soc-camera is so far only about video capture, let's simplify operation names a bit further. set_fmt_cap / try_fmt_cap wasn't a very good choice too. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9787): soc-camera: let camera host drivers decide upon pixel formatGuennadi Liakhovetski2008-12-30
| | | | | | | | | | | | | Pixel format requested by the user is not necessarily the same, as what a sensor driver provides. There are situations, when a camera host driver provides the required format, but requires a different format from the sensor. Further, the list of formats, supported by sensors is pretty static and can be pretty good described with a constant list of structures. Whereas decisions, made by camera host drivers to support requested formats can be quite complex, therefore it is better to let the host driver do the work. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9786): soc-camera: formatting fixesGuennadi Liakhovetski2008-12-30
| | | | | | | Minor formatting fixes Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9785): soc-camera: merge .try_bus_param() into .try_fmt_cap()Guennadi Liakhovetski2008-12-30
| | | | | | | | | .try_bus_param() method from struct soc_camera_host_ops is only called at one location immediately before .try_fmt_cap(), there is no value in keeping these two methods separate, merge them. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9784): Register name fix for ov772x driverKuninori Morimoto2008-12-30
| | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9783): Change power on/off sequence on ov772xKuninori Morimoto2008-12-30
| | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9778): cx18: cx18_writel_expect() should not declare success on a ↵Andy Walls2008-12-30
| | | | | | | | | | | | | PCI read error cx18: cx18_writel_expect() should not declare success on a PCI read error. This removes the potential for cx18_write*_expect() calls to not accomplish a PCI write successfully as expected. The CX18-AV core uses the *expect() calls often and this may be the source of intermittent audio problems and standands switching problems. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9776): cx18: Change to per CX23418 device work queues for ↵Andy Walls2008-12-30
| | | | | | | | | | | deferrable work handling cx18: Change to per CX23418 device work queues for deferrable work handling. Needed to support 2.6.22 and earlier kernels that can't selectively cancel work orders. Also will provide slightly better performance on SMP systems. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9775): tda8290: fix FM radioMauro Carvalho Chehab2008-12-30
| | | | | | | | | | tda8290 were using some random video standard for FM. This results on random errors. Instead, program tda8290 in expert mode, using a configuration near the one specified on NXP datasheet for tda8295 (available on their site). Also, properly display that the device is on radio mode. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9774): tda827x: fix returned frequencyMauro Carvalho Chehab2008-12-30
| | | | | | | | | | | | | | | Probably due to a removed code, tda827x were doing some wrong calculus at the returned frequency. I suspect that the original idea were to return the programmed divisor converted into frequency again. However, the current code is sometimes multiplying the programmed frequency by 62500, and, on other cases, like radio, it dividing it by 1000. Instead of doing such math, let's just store the frequency value as requested by the caller module. Cc: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9773): tda827x: fix printk message when in FM modeMauro Carvalho Chehab2008-12-30
| | | | | Cc: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9772): saa7134: Add support for Kworld Plus TV Analog Lite PCIMauro Carvalho Chehab2008-12-30
| | | | | | | | | Thanks to Sistema Fenix (http://www.sistemafenix.com.br/) for sponsoring this development. Signed-off-by: Gilberto <gilberto@sistemafenix.com.br> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9771): tuner-xc2028: fix a small warningMauro Carvalho Chehab2008-12-30
| | | | | | | /home/mauro/v4l-dvb/v4l/tuner-xc2028.c: In function 'xc2028_sleep': /home/mauro/v4l-dvb/v4l/tuner-xc2028.c:1111: warning: 'return' with no value, in function returning non-void Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9770): em28xx: turn off tuner when not usedMauro Carvalho Chehab2008-12-30
| | | | | | | | | | | | em28xx devices generally get hot when xc3028 tuner is powered on. This patch solves this by turning power off when the device is not used, at the expense of having a higher load time, when calling a TV application. Since firmware load happens on 1 or 2 seconds on most devices, this is not a pain. Also, it helps to save the planet by saving some power :) Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9769): tuner-xc2028: powers device of when not usedMauro Carvalho Chehab2008-12-30
| | | | | | | | Since the firmware load is now fast on most boards, better to keep the tuner off by default. A modprobe parameter were added to keep the old behavior, to be used by old devices. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9756): em28xx: Improve register log formatMauro Carvalho Chehab2008-12-30
| | | | | | | Change log format to look more like URB transactions. In fact, setup and IN/OUT transactions are merged. This helps to debug the driver. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9737): sms1xxx: enable LNA control on Hauppauge WinTV MiniCardMichael Krufky2008-12-30
| | | | | | | Power the LNA while the frontend is in use. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9730): cx18: Quiet a sometimes common warning that often has benign ↵Andy Walls2008-12-30
| | | | | | | | | | | | consequences cx18: Quiet a sometimes common warning that often has benign consequences. No one probably cares that the firmware took forever to ack our command, as they always seem to succeed whether or not the firmware acks it in a reasonable amount of time. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9729): cx18: Update version due to significant irq handling changesAndy Walls2008-12-30
| | | | | | | | Update the version number due to significant changes in the way the mailboxes and interrupts are handled. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9728): cx18: Copyright attribution update for files modified by awallsAndy Walls2008-12-30
| | | | | | | Add copyright attribution for files modified by awalls in 2008 Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9727): cx18: Adjust outgoing mailbox timeouts and remove statistics ↵Andy Walls2008-12-30
| | | | | | | | | | | | | logging cx18: Adjust outgoing mailbox timeouts and remove statistics logging. This saves some wasted storage in struct cx18 for each card. Cutting the outgoing mailbox timeouts in half from the previous value appears to be safe with MythTV. Got rid of interrupted case code path after a wait uninterruptable returns. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9726): cx18: Restore buffers that have fallen out of the transfer ↵Andy Walls2008-12-30
| | | | | | | | | | rotation Restore buffers that have fallen out of the transfer rotation, and check for coherent mailbox data when processing a stale mailbox. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9725): cx18: Remove unnecessary MMIO accesses in time critical irq ↵Andy Walls2008-12-30
| | | | | | | | | | | handling path Remove unnecessary MMIO accesses in time critical irq handling path. Also ensured that the mailbox ack field is read in last, so we know for sure if we have a stale mailbox or not on receipt. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9724): cx18: Streamline cx18-io[ch] wrappers and enforce MMIO retry ↵Andy Walls2008-12-30
| | | | | | | | | | | | | strategy cx18: Streamline cx18-io[ch] wrappers and enforce MMIO retry strategy so that write retries always occur and read retries never occur (as they never help). Remove MMIO statistics logging to speed up MMIO accesses. Deprecate & ignore retry_mmio and mmio_ndelay module parameters, to essentially force retry_mmio=1 and mmio_ndelay=0. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9723): cx18: Propagate staleness of mailbox and mdl ack data to ↵Andy Walls2008-12-30
| | | | | | | | | | | | | work handler cx18: Propagate staleness of mailbox and mdl ack data to work handler to let the work handler know that the data from the encoder may not be coherent. Allows for smarter handling of buffers in future, to deal with MDLs that fall out of rotation due to irq handler being late in collecting mailbox and mdl ack info. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9722): cx18: Convert per stream queue spinlocks into mutexesAndy Walls2008-12-30
| | | | | | | | | | Convert the per stream queue spinlocks into mutexes. All queue manipulation happens via the work queue or system calls into the driver, and not in an interrupt context. This reduces the amout of time the cx18 driver keeps interrupts disabled. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9721): cx18: Change to singlethreaded global work queue thread for ↵Andy Walls2008-12-30
| | | | | | | | | | | | deferable work Change to singlethreaded global work queue thread for deferable work, instead of the kernel default multithreaded work queue. This ensures execution of deferable work is always in the proper order, so caputred buffers don't get reordered. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9720): cx18: Major rewrite of interrupt handling for incoming ↵Andy Walls2008-12-30
| | | | | | | | | | | | | | | | | | mailbox processing A major rewrite of interrupt handling for incoming mailbox processing, to split the timing critical steps from the the deferrable steps as the sending XPU on the CX23418 will time out and overwrite our incoming mailboxes rather quickly. Setup a pool of work "order forms" for the irq handler to send jobs to the new work handler routine which uses the kernel default work queue to do the deferrable work. Started optimizing some of the cx18-io calls as they are now the low hanging fruit for recoving microseconds back from the timeline. Future optimizations will get rid of mmio read retries, mmio stats logging, and combine smaller functions in the irq path into the larger ones to save ~2 us each. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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