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* [media] it913x-fe ver 1.13 add BER and UNC monitoringMalcolm Priestley2012-01-06
| | | | | | | | | Add BER monitoring with Pre-Viterbi error rate. Add UCBLOCKS based on Aborted packets. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] it913x ver 1.22 corrections to Tuner IDsMalcolm Priestley2012-01-06
| | | | | | | | | Correction to tuner ID 0x51. Don't force tuner ID 0x60 unless eprom data zero. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] [resend] em28xx: Add Plextor ConvertX PX-AV100U to em28xx-cards.cDon Kramer2012-01-06
| | | | | | | | | | | | | Adds support for the Plextor ConvertX PX-AV100U, which uses the eMPIA EM2820 chip. The device has a device_id of '0x093b, 0xa003'. I am using the existing EM2820_BOARD_PINNACLE_DVC_90 board profile, as the Pinnacle Dazzle DVC 90/100/101/107, Kaiser Baas Video to DVD maker, and Kworld DVD Maker 2 were already mapped to it. Some more background on the device and my testing can be found at http://www.donkramer.net/plextor_122710.pdf Signed-off-by: Don Kramer <dgkramer@comcast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] [BUG] it913x ver 1.21 Fixed for issue with 9006 and warm bootMalcolm Priestley2012-01-06
| | | | | | | | | | | | Some channels appear weak signal after warm boot. Because tuner id is not present in eprom 0x38 is assigned. 9006 devices are now always assigned 0x60. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] [BUG] it913x ver 1.20. PID filter problemsMalcolm Priestley2012-01-06
| | | | | | | | | | | | | Fixes issues with PID filter Stalling of some channels when PID is on. PID filter not turning off fully. PID filter can now turn on and off each index. Removed PID_RST from it913x_pid_filter_ctrl. Replaced with PID_EN removed from it913x_pid_filter Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] v4l: Add VIDIOC_LOG_STATUS support for sub-device nodesSylwester Nawrocki2012-01-06
| | | | | | | | | | | | | | | The VIDIOC_LOG_STATUS ioctl allows to dump the current status of a driver to the kernel log. Currently this ioctl is only available at video device nodes and the subdevs rely on the host driver to expose their core.log_status operation to user space. This patch adds VIDIOC_LOG_STATUS support at the sub-device nodes, for standalone subdevs that expose their own /dev entry. Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] s5p-fimc: Prevent lock up caused by incomplete H/W initializationSylwester Nawrocki2012-01-06
| | | | | | | | | | | | | | | The following ioctl sequence causes fimc_dma_run() to start processing without complete scaler and DMA initialization which causes missing interrupt and blocking on DQBUF: S_FMT, STREAMON, QBUF, DQBUF, STREAMOFF, STREAMON, QBUF, DQBUF. Fix this regression caused by moving pm_runtime* calls to start/stop_streaming callback by making sure the fimc_m2m_resume() is always invoked when expected. Reported-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] firedtv: handle errors from dvb_net_initJonathan Nieder2012-01-06
| | | | | | | | | | | | It is not common for dvb_net_init to fail, but after the patch "dvb_net_init: return -errno on error" it can fail due to running out of memory. Handle this. From an audit of dvb_net_init callers. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Reviewed-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] dvb-usb: handle errors from dvb_net_initJonathan Nieder2012-01-06
| | | | | | | | From an audit of dvb_net_init callers, now that that function returns -errno on error. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] dm1105: handle errors from dvb_net_initJonathan Nieder2012-01-06
| | | | | | | | | | | | Clean up and error out if dvb_net_init fails (for example due to ENOMEM). This involves moving the dvb_net_init call to before frontend_init to make cleaning up a little easier. From an audit of dvb_net_init callers, now that dvb_net_init lets callers know about errors. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] dvb-bt8xx: handle errors from dvb_net_initJonathan Nieder2012-01-06
| | | | | | | | | | | | Clean up and error out if dvb_net_init fails (for example when running out of memory). From an audit of dvb_net_init callers, now that dvb_net_init has learned to return a nonzero value from time to time. [mchehab.redhat.com: codingstyle fix: printk() should include KERN_ facility level] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] flexcop: handle errors from dvb_net_initJonathan Nieder2012-01-06
| | | | | | | | | Bail out if dvb_net_init encounters an error (for example an out-of-memory condition), now that it reports them. [mchehab@redhat.com: CodingStyle fix: don't use "if ((ret = foo()) < 0)"] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ttusb-budget: use goto for exception handlingJonathan Nieder2012-01-06
| | | | | | | | Avoid some repetition by adopting the usual "goto err" idiom for error handling. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] dvb-bt8xx: use goto based exception handlingJonathan Nieder2012-01-06
| | | | | | | | | | | | | | | Repeating the same cleanup code in each error handling path makes life unnecessarily difficult for reviewers, who much check each instance of the same copy+pasted code separately. A "goto" to the end of the function is more maintainable and conveys the intent more clearly. While we're touching this code, also lift some assignments from "if" conditionals for simplicity. No functional change intended. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] videobuf-dvb: avoid spurious ENOMEM when CONFIG_DVB_NET=nJonathan Nieder2012-01-06
| | | | | | | | | | | | | | | | | | | | | videobuf_dvb_register_bus relies on dvb_net_init to set dvbnet->dvbdev on success, but ever since commit fcc8e7d8c0e2 ("dvb_net: Simplify the code if DVB NET is not defined"), ->dvbdev is left unset when networking support is disabled. Therefore in such configurations videobuf_dvb_register_bus always returns failure, tripping little-tested error handling paths and preventing the device from being initialized and used. Now that dvb_net_init returns a nonzero value on error, we can use that as a more reliable error indication. Do so. Now your card be used with CONFIG_DVB_NET=n, and the kernel will pass on a more useful error code describing what happened when CONFIG_DVB_NET=y but dvb_net_init fails due to resource exhaustion. Reported-by: David Fries <David@Fries.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] DVB: dvb_net_init: return -errno on errorJonathan Nieder2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | dvb_net_init unconditionally returns 0. Callers such as videobuf_dvb_register_frontend examine dvbnet->dvbdev instead of the return value to tell whether the operation succeeded. If it has been set to a valid pointer, success; if it was left equal to NULL, failure. Alas, there is an edge case where that logic does not work as well: when network support has been compiled out (CONFIG_DVB_NET=n), we want dvb_net_init and related operations to behave as no-ops and always succeed, but there is no appropriate value to which to set dvb->dvbdev to indicate this. Let dvb_net_init return a meaningful error code, as preparation for adapting callers to look at that instead. The only immediate impact of this patch should be to make the few callers that already check for an error code from dvb_net_init behave a little more sensibly when it fails. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] it913x ver 1.18 Turn pid filter off by caps option onlyMalcolm Priestley2012-01-06
| | | | | | | | | | Turn the pid filter off by caps option only. This is so the full stream is passed to demuxer and not limited by pid count. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] vpif_capture.c: v4l2_device_register() is called too late in ↵Hans Verkuil2012-01-06
| | | | | | | | | | | | | | | | | | | vpif_probe() The function v4l2_device_register() is called too late in vpif_probe(). This meant that vpif_obj.v4l2_dev is accessed before it is initialized which caused a crash. This used to work in the past, but video_register_device() is now actually using the v4l2_dev pointer. Note that vpif_display.c doesn't have this bug, there v4l2_device_register() is called at the beginning of vpif_probe. Signed-off-by: Georgios Plakaris <gplakari@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Manjunath Hadli <Manjunath.hadli@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] marvell-cam: Make suspend/resume work on MMP2Jonathan Corbet2012-01-06
| | | | | | | | | Somehow I didn't ever quite get around to implementing suspend/resume on the MMP2 platform; this patch fixes that little oversight. A bit of core work was necessary to do the right thing in the s/g DMA case. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] lmedm04 DM04/QQBOX ver 1.91 turn pid filter off by caps option onlyMalcolm Priestley2012-01-06
| | | | | | | | | | Turn the pid filter off by caps option only. This is so the full stream is passed to demuxer and not limited by pid count. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] em28xx: Reworked probe code to get rid of some hacksHolger Nelson2012-01-06
| | | | | | | | | | Reworked device probing to get rid of hacks to guess the maximum size of dvb iso transfer packets. The new code also selects the first alternate config which supports the largest possible iso transfers for dvb. [mchehab@redhat.com: Fix a few checkpatch.pl CodingStyle compliants] Signed-off-by: Holger Nelson <hnelson@hnelson.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] Added USB Id & configuration array for Honestech Vidbox NW03Gareth Williams2012-01-06
| | | | | | | Adds support for the Honestech Vidbox NW03 USB capture device. Signed-off-by: Gareth Williams <gareth@garethwilliams.me.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] em28xx: Add Terratec Cinergy HTC USB XS to em28xx-cards.cHolger Nelson2012-01-06
| | | | | | | | | | This adds support for the Terratec Cinergy HTC USB XS which is similar to the Terratec H5 by adding the USB-ids to the table. According to http://linux.terratec.de it uses the same ICs and DVB-C works for me using the firmware of the H5. Signed-off-by: Holger Nelson <hnelson@hnelson.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] dw2102: use symbolic names for dw2102_table indicesJonathan Nieder2012-01-06
| | | | | | | | | | | | | | | dw2102_properties et al refer to entries in the USB-id table using hard-coded indices, as in "&dw2102_table[6]", which means adding new entries before the end of the list has the potential to introduce bugs in code elsewhere in the file. Use C99-style initializers with symbolic names for each index to avoid this. This way, other device tables wanting to reuse the USB ids can use expressions like "&dw2102_table[TEVII_S630]" that do not change as the entries in the table are reordered. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] drivers/staging/media/as102/as102_usb_drv.c: shift position of ↵Julia Lawall2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | allocation code The conditional after the kzalloc says that the tested expression should never be true, but if it were, the allocated data would have to be freed. This change just moves the allocation below the test, to avoid any possibility of the problem. A simplified version of the semantic match that finds the problem is as follows: (http://coccinelle.lip6.fr) // <smpl> @r exists@ local idexpression x; statement S; identifier f1; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } x->f1 ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] drivers/media/video/davinci/vpbe.c: introduce missing kfreeJulia Lawall2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vpbe_dev needs to be freed before leaving the function in an error case. A simplified version of the semantic match that finds the problem is as follows: (http://coccinelle.lip6.fr) // <smpl> @r exists@ local idexpression x; statement S; identifier f1; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } x->f1 ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] Staging: dt3155v4l: probe() always failsDan Carpenter2012-01-06
| | | | | | | | There were some curly braces missing so the probe() function always failed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] Staging: dt3155v4l: update to newer APIDan Carpenter2012-01-06
| | | | | | | | | | | | | | | | I changed the function definitions for dt3155_queue_setup() to match the newer API. The dt3155_start_streaming() function didn't do anything so I just removed it. This silences the following gcc warnings: drivers/staging/media/dt3155v4l/dt3155v4l.c:307:2: warning: initialization from incompatible pointer type [enabled by default] drivers/staging/media/dt3155v4l/dt3155v4l.c:307:2: warning: (near initialization for ‘q_ops.queue_setup’) [enabled by default] drivers/staging/media/dt3155v4l/dt3155v4l.c:311:2: warning: initialization from incompatible pointer type [enabled by default] drivers/staging/media/dt3155v4l/dt3155v4l.c:311:2: warning: (near initialization for ‘q_ops.start_streaming’) [enabled by default] Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] media i.MX27 camera: Fix field_count handlingJavier Martin2012-01-06
| | | | | | | | | | | | To properly detect frame loss the driver must keep track of a frame_count. Furthermore, field_count use was erroneous because in progressive format this must be incremented twice. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] i.MX27 camera: add support for YUV420 formatJavier Martin2012-01-06
| | | | | | | | | | | | This patch uses channel 2 of the eMMa-PrP to convert format provided by the sensor to YUV420. This format is very useful since it is used by the internal H.264 encoder. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] atmel-isi: add code to enable/disable ISI_MCK clockJosh Wu2012-01-06
| | | | | | | | | | | | This patch - add ISI_MCK clock enable/disable code. - change field name in isi_platform_data structure Signed-off-by: Josh Wu <josh.wu@atmel.com> [g.liakhovetski@gmx.de: fix label names] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] soc-camera: change order of removing deviceLei Wen2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | As our general practice, we use stream off before we close the video node. So that the drivers its stream off function would be called before its remove function. But for the case for ctrl+c, the program would be force closed. We have no chance to call that vb2 stream off from user space, but directly call the remove function in soc_camera. In that common code of soc_camera: ici->ops->remove(icd); if (ici->ops->init_videobuf2) vb2_queue_release(&icd->vb2_vidq); It would first call the device remove function, then release vb2, in which stream off function is called. Thus it create different order for the driver. This patch change the order to make driver see the same sequence to make it happy. Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] mt9m111: properly implement .s_crop and .s_fmt(), reset on STREAMONGuennadi Liakhovetski2012-01-06
| | | | | | | | | | | | mt9m111 camera sensors support cropping and scaling. The current implementation is broken. For example, .s_crop() sets output frame sizes instead of the input cropping window. This patch adds a proper implementation of these methods. Besides it adds a sensor-disable and -enable operations on first open() and last close() respectively, to save power while closed and to return the camera to the default power-on state. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] mt9m111: power down most circuits when suspendedGuennadi Liakhovetski2012-01-06
| | | | | Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] mt9m111: cleanly separate register contextsGuennadi Liakhovetski2012-01-06
| | | | | | | | Cleanly separating register contexts A and B will allow us to configure the contexts independently. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] soc-camera: remove redundant parameter from .set_bus_param()Guennadi Liakhovetski2012-01-06
| | | | | | | | | | The "pixfmt" parameter of the struct soc_camera_host_ops::set_bus_param() method is redundant, because at the time, when this method is called, pixfmt is guaranteed to be equal to icd->current_fmt->host_fmt->fourcc. Remove this parameter and update all drivers accordingly. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Properly fill all fields on try_fmtHans de Goede2012-01-06
| | | | | | | | | | | | | | Before this patch the resulting values from a try_fmt were different then those from a s_fmt with the same parameters. try_fmt simply did not touch / fill some values like bytesperline at all. This patch also corrects bytesperline to the proper value for a planar format such as the YUV420P format the pwc driver produces, which is the bytesperline value for the biggest plane, rather then those of all planes added together. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Get rid of compression module parameterHans de Goede2012-01-06
| | | | | | | | Instead of making this a module parameter, automatically fallback to higher compression settings if there is not enough bandwidth. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Remove software emulation of arbritary resolutionsHans de Goede2012-01-06
| | | | | | | | | | The pwc driver claims to support any resolution between 160x120 and 640x480, but emulates this by simply drawing a black border around the image. Userspace can draw its own black border if it really wants one. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Remove driver specific ioctlsHans de Goede2012-01-06
| | | | | | | | This stems from the v4l1 era, with v4l2 everything can be done with standardized v4l2 API calls. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Remove dead snapshot codeHans de Goede2012-01-06
| | | | | | | | | | The in kernel version of the pwc driver has never supported snapshot mode, and now that we no longer support the pixfmt.priv abuse there also no longer is a way for userspace to request it, rendering all the code in question dead (never called), so remove it. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Remove driver specific use of pixfmt.priv in the pwc driverHans de Goede2012-01-06
| | | | | | | | The .priv field never was intended for this, setting a framerate is support using the standardized S_PARM ioctl. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Remove driver specific sysfs interfaceHans de Goede2012-01-06
| | | | | | | | Setting pan/tilt should be done with v4l2 controls, like with other cams. The button is available as a standard input device Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Read new preset values when changing awb control to a presetHans de Goede2012-01-06
| | | | | | | | | | So that events get generated for the new red + blue bal values when switching to a preset. This allows apps to solely rely on events instead of needing to do a query + g_ctrl on all controls when a control with the update flag set is gets set or gets an event. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Rework lockingHans de Goede2012-01-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While testing gtk-v4l's new ctrl event code, I hit the following deadlock in the pwc driver: Thread 1: -Does a VIDIOC_G_CTRL -video2_ioctl takes the modlock -video2_ioctl calls v4l2_g_ctrl -v4l2_g_ctrl takes the ctrl_handler lock -v4l2_g_ctrl calls pwc_g_volatile_ctrl -pwc_g_volatile_ctrl releases the modlock as the usb transfer can take a significant amount of time and we don't want to block DQBUF / QBUF too long Thread 2: -Does a VIDIOC_FOO_CTRL -video2_ioctl takes the modlock -video2_ioctl calls v4l2_foo_ctrl -v4l2_foo_ctrl blocks while trying to take the ctrl_handler lock Thread 1: -Blocks while trying to re-take the modlock, as its caller will eventually unlock that Now we have thread 1 waiting for the modlock while holding the ctrl_handler lock and thread 2 waiting for the ctrl_handler lock while holding the modlock -> deadlock. Conclusion: 1) We cannot unlock modlock from pwc_s_ctrl / pwc_g_volatile_ctrl, but this can cause QBUF / DQBUF to block for up to a full second 2) After evaluating various option I came to the conclusion that pwc should stop using the v4l2 core locking, and instead do its own locking Thus this patch stops pwc using the v4l2 core locking, and replaces that with it doing its own locking where necessary. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Make auto white balance speed and delay available as v4l2 controlsHans de Goede2012-01-06
| | | | | | | | Currently auto white balance speed and delay are only available through custom ioctls, which are deprecated and will be going away in 3.3 . Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Properly mark device_hint as unused in all probe error pathsHans de Goede2012-01-06
| | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] pwc: Use v4l2-device and v4l2-fhHans de Goede2012-01-06
| | | | | | | | | This is a preperation patch for adding support for control events. Actually enabling support for control events will be done in a separate patch, as that depends on the necessary poll changes going upstream Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] gscpa_t613: Add support for the camera buttonHans de Goede2012-01-06
| | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] gscpa_ov519: Fix the bandwidth calc for enabling compressionHans de Goede2012-01-06
| | | | | | | | | Somehow the code has ended up assuming 1400 packets/sec which of course is wrong for usb1 devices like the ov511 cameras. usb1 only does 1000 (isoc) packets / sec. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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