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* media: cec: add CEC_EVENT_PIN_HPD_LOW/HIGH eventsHans Verkuil2017-09-236-10/+52
| | | | | | | | | | | | | | | | | | Add support for two new low-level events: PIN_HPD_LOW and PIN_HPD_HIGH. This is specifically meant for use with the upcoming cec-gpio driver and makes it possible to trace when the HPD pin changes. Some HDMI sinks do strange things with the HPD and this makes it easy to debug this. Note that this also moves the initialization of a devnode mutex and list to the allocate_adapter function: if the HPD is high, then as soon as the HPD interrupt is created an interrupt occurs and cec_queue_pin_hpd_event() is called which requires that the devnode mutex and list are initialized. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: cec-core.rst/cec-ioc-receive.rst: clarify CEC_TX_STATUS_ERRORHans Verkuil2017-09-232-7/+10
| | | | | | | | | | | | | | | | CEC_TX_STATUS_ERROR can be used if the HW cannot tell LOST_ARB and LOW_DRIVE apart, or when some other error occurs. It is not a replacement for NACK. So the hardware must be able to tell the difference between OK, NACK and 'something else'. Clarify the documentation (both public and kernel API) on this point. Also fix two small typos (this messages -> this message). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: cec-ioc-dqevent.rst: fix typoHans Verkuil2017-09-232-4/+2
| | | | | | | | | | | The documentation talked about INITIAL_VALUE when the actual define is INITIAL_STATE. Fix this. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: cec-pin.c: use proper ktime accessor functionsHans Verkuil2017-09-231-15/+22
| | | | | | | | | | | Use ktime_to_ns/ns_to_ktime. This makes it possible to work with older kernels and the media_build compatibility system. For the mainline kernel these functions are NOPs. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: cec: Respond to unregistered initiators, when applicableJose Abreu2017-09-231-3/+10
| | | | | | | | | | | | | | | | | | Running CEC 1.4 compliance test we get the following error on test 11.1.6.2: "ERROR: The DUT did not broadcast a <Report Physical Address> message to the unregistered device." Fix this by letting GIVE_PHYSICAL_ADDR message respond to unregistered device. Also, GIVE_DEVICE_VENDOR_ID and GIVE_FEATURES fall in the same category so, respond also to these messages. With this fix we pass CEC 1.4 official compliance. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: Joao Pinto <jpinto@synopsys.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: <stable@vger.kernel.org> # for v4.10 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: s5p-cec: add NACK detection supportHans Verkuil2017-09-233-2/+14
| | | | | | | | | | | | | | | | | | | The s5p-cec driver returned CEC_TX_STATUS_ERROR for the NACK condition. Some digging into the datasheet uncovered the S5P_CEC_TX_STAT1 register where bit 0 indicates if the transmit was nacked or not. Use this to return the correct CEC_TX_STATUS_NACK status to userspace. This was the only driver that couldn't tell a NACK from another error, and that was very unusual. And a potential problem for applications as well. Tested with my Odroid-U3. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: <stable@vger.kernel.org> # for v4.12 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: staging/imx: Fix uninitialized variable warningLaurent Pinchart2017-09-231-2/+2
| | | | | | | | | | The ret variable can be returned uninitialized in the imx_media_create_pad_vdev_lists() function is imxmd->num_vdevs is zero. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: qcom: camss: Make function vfe_set_selection staticColin Ian King2017-09-231-1/+1
| | | | | | | | | | | | | The function vfe_set_selection is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: warning: symbol 'vfe_set_selection' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Todor Tomov <todor.tomov@linaro.org> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: venus: init registered list on streamoffStanimir Varbanov2017-09-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing init_list_head for the registered buffer list. Absence of the init could lead to a unhandled kernel paging request as below, when streamon/streamoff are called in row. [338046.571321] Unable to handle kernel paging request at virtual address fffffffffffffe00 [338046.574849] pgd = ffff800034820000 [338046.582381] [fffffffffffffe00] *pgd=00000000b60f5003[338046.582545] , *pud=00000000b1f31003 , *pmd=0000000000000000[338046.592082] [338046.597754] Internal error: Oops: 96000004 [#1] PREEMPT SMP [338046.601671] Modules linked in: venus_enc venus_dec venus_core usb_f_ecm g_ether usb_f_rndis u_ether libcomposite ipt_MASQUERADE nf_nat_masquerade_ipv4 arc4 wcn36xx mac80211 btqcomsmd btqca iptable_nat nf_co] [338046.662408] CPU: 0 PID: 5433 Comm: irq/160-venus Tainted: G W 4.9.39+ #232 [338046.668024] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [338046.675268] task: ffff80003541cb00 task.stack: ffff800026e20000 [338046.682097] PC is at venus_helper_release_buf_ref+0x28/0x88 [venus_core] [338046.688282] LR is at vdec_event_notify+0xe8/0x150 [venus_dec] [338046.695029] pc : [<ffff000000af6c48>] lr : [<ffff000000a6fc60>] pstate: a0000145 [338046.701256] sp : ffff800026e23bc0 [338046.708494] x29: ffff800026e23bc0 x28: 0000000000000000 [338046.718853] x27: ffff000000afd4f8 x26: ffff800031faa700 [338046.729253] x25: ffff000000afd790 x24: ffff800031faa618 [338046.739664] x23: ffff800003e18138 x22: ffff800002fc9810 [338046.750109] x21: ffff800026e23c28 x20: 0000000000000001 [338046.760592] x19: ffff80002a13b800 x18: 0000000000000010 [338046.771099] x17: 0000ffffa3d01600 x16: ffff000008100428 [338046.781654] x15: 0000000000000006 x14: ffff000089045ba7 [338046.792250] x13: ffff000009045bb6 x12: 00000000004f37c8 [338046.802894] x11: 0000000000267211 x10: 0000000000000000 [338046.813574] x9 : 0000000000032000 x8 : 00000000dc400000 [338046.824274] x7 : 0000000000000000 x6 : ffff800031faa728 [338046.835005] x5 : ffff80002a13b850 x4 : 0000000000000000 [338046.845793] x3 : fffffffffffffdf8 x2 : 0000000000000000 [338046.856602] x1 : 0000000000000003 x0 : ffff80002a13b800 Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb: i2c transfers over usb cannot be done from stackSean Young2017-09-233-28/+103
| | | | | | | | | | Since commit 29d2fef8be11 ("usb: catch attempts to submit urbs with a vmalloc'd transfer buffer"), the AverMedia AverTV DVB-T USB 2.0 (a800) fails to probe. Cc: stable@vger.kernel.org Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: leds: as3645a: add V4L2_FLASH_LED_CLASS dependencyArnd Bergmann2017-09-051-0/+1
| | | | | | | | | | | | | | | | | | | | We get a link error when V4L2_FLASH_LED_CLASS=m and AS3645A is built-in: drivers/leds/leds-as3645a.o: In function `as3645a_v4l2_setup': leds-as3645a.c:(.text+0x258): undefined reference to `v4l2_flash_init' leds-as3645a.c:(.text+0x284): undefined reference to `v4l2_flash_indicator_init' leds-as3645a.c:(.text+0x2a4): undefined reference to `v4l2_flash_release' drivers/leds/leds-as3645a.o: In function `as3645a_remove': leds-as3645a.c:(.text+0x784): undefined reference to `v4l2_flash_release' This adds the same Kconfig dependency that the other V4L2 flash drivers in drivers/leds use, to avoid that broken configuration. Fixes: a56ba8fbcb55 ("media: leds: as3645a: Add LED flash class driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: get rid of removed DMX_GET_CAPS and DMX_SET_SOURCE leftoversMauro Carvalho Chehab2017-09-052-22/+0
| | | | | | | | | | | Those two ioctls were never used within the Kernel. Still, there used to have compat32 code there (and an if #0 block at the core). Get rid of them. Fixes: 286fe1ca3fa1 ("media: dmx.h: get rid of DMX_GET_CAPS") Fixes: 13adefbe9e56 ("media: dmx.h: get rid of DMX_SET_SOURCE") Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: Revert "[media] v4l: async: make v4l2 coexist with devicetree nodes ↵Rob Herring2017-09-051-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in a dt overlay" This reverts commit d2180e0cf77dc7a7049671d5d57dfa0a228f83c1. The commit was flawed in that if the device_node pointers are different, then in fact a different device is present and the device node could be different in ways other than full_name. As Frank Rowand explained: "When an overlay (1) is removed, all uses and references to the nodes and properties in that overlay are no longer valid. Any driver that uses any information from the overlay _must_ stop using any data from the overlay. Any driver that is bound to a new node in the overlay _must_ unbind. Any driver that became bound to a pre-existing node that was modified by the overlay (became bound after the overlay was applied) _must_ adjust itself to account for any changes to that node when the overlay is removed. One way to do this is to unbind when notified that the overlay is about to be removed, then to re-bind after the overlay is completely removed. If an overlay (2) is subsequently applied, a node with the same full_name as from overlay (1) may exist. There is no guarantee that overlay (1) and overlay (2) are the same overlay, even if that node has the same full_name in both cases." Also, there's not sufficient overlay support in mainline to actually remove and re-apply an overlay to hit this condition as overlays can only be applied from in kernel APIs. Fixes: d2180e0cf77d ("[media] v4l: async: make v4l2 coexist with devicetree nodes in a dt overlay") Cc: Javier Martinez Canillas <javier@osg.samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Javi Merino <javi.merino@kernel.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: staging: atomisp: sh_css_calloc shall return a pointer to the ↵Sergei A. Trusov2017-09-051-0/+1
| | | | | | | | | | | | allocated space The calloc function returns either a null pointer or a pointer to the allocated space. Add the second case that is missed. Fixes: da22013f7df4 ("atomisp: remove indirection from sh_css_malloc") Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: Revert "[media] lirc_dev: remove superfluous get/put_device() calls"Sean Young2017-09-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 5be2b76a9ca4ea5fd3e221114d62eeb0d78267ca. Only when the lirc device is freed, should we drop our reference to rc_dev, else we the rc_dev is freed to early. If userspace has a file descriptor open during unplug, it goes bang. ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x7bb/0x1e10 Read of size 8 at addr ffff8801d7d61ed0 by task ir-rec/2609 -snip- mutex_lock_nested+0x1b/0x20 ? mutex_lock_nested+0x1b/0x20 rc_close.part.6+0x20/0x60 [rc_core] rc_close+0x13/0x20 [rc_core] lirc_dev_fop_close+0x62/0xd0 [lirc_dev] __fput+0x236/0x410 ? fput+0xb0/0xb0 ? do_raw_spin_trylock+0x110/0x110 ? set_rq_offline.part.70+0xa0/0xa0 ____fput+0xe/0x10 task_work_run+0x116/0x180 ? task_work_cancel+0x170/0x170 ? _raw_spin_unlock+0x27/0x40 ? switch_task_namespaces+0x5f/0x90 do_exit+0x68b/0xe80 Cc: stable@vger.kernel.org # For Kernel 4.13 Fixes: 5be2b76a9ca4 ("[media] lirc_dev: remove superfluous get/put_device() calls") Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: add qcom_camss.rst to v4l-drivers rst fileMauro Carvalho Chehab2017-09-051-0/+1
| | | | | | | Avoid this warning: /devel/v4l/docs/Documentation/media/v4l-drivers/qcom_camss.rst:: WARNING: document isn't included in any toctree Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb headers: make checkpatch happierMauro Carvalho Chehab2017-09-053-7/+6
| | | | | | | | | Adjust dvb ca.h, dmx.h and frontend.h in order to make checkpatch happier. Now, it only complains about the typedefs, and those are there just to provide backward userspace compatibility. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb uapi: move frontend legacy API to another part of the bookMauro Carvalho Chehab2017-09-052-8/+14
| | | | | | | There's a chapter for the legacy APIs. Move the frontend DVBv3 API to it, and update the chapter's introduction accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: pixfmt-srggb12p.rst: better format the table for PDF outputMauro Carvalho Chehab2017-09-051-38/+21
| | | | | | | | Adjust the table to be better displayed on PDF output. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: docs-rst: media: Don't use \small for V4L2_PIX_FMT_SRGGB10 documentationSakari Ailus2017-09-051-10/+5
| | | | | | | | | | | | | | There appears to be an issue in using \small in certain cases on Sphinx 1.4 and 1.5. Other format documents don't use \small either, remove it from here as well. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> [mchehab@s-opensource.com: kept tabularcolumns - readjusted - and add a few blank lines for it to display better] Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: index.rst: don't write "Contents:" on PDF outputMauro Carvalho Chehab2017-09-051-1/+5
| | | | | | | | | | | Right now, Sphinx unconditionally creates a blank page with just "Contents:" on it, on PDF output. While this makes sense for html, it doesn't o PDF, as LaTeX does what's required automatically. Fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: pixfmt*.rst: replace a two dots by a commaMauro Carvalho Chehab2017-09-0517-17/+17
| | | | | | | | | | | | | | | On several tables, the color sample location table preamble is written as: Color Sample Location.. Instead of: Color Sample Location: I suspect that the repetition of such pattern was due to some copy-and-paste (or perhaps some error during DocBook conversion). Anyway, fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: vidioc-g-fmt.rst: adjust table formatMauro Carvalho Chehab2017-09-051-1/+1
| | | | | | | | | | | While doing a visual inspection with Sphinx 1.5, I noticed that one of the columns was smaller than the text written there. As this is the only thing I noticed with Sphinx 1.5, I suspect that this was also a problem with Sphinx 1.4. Yet, I opted to touch it in a way that wouldn't cause backward issues. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: vivid.rst: add a blank line to correct ReST formatMauro Carvalho Chehab2017-09-051-0/+1
| | | | | | | | | | | | On all vivid parameters, there's an space after the parameter, except for "DV Timings Signal Mode". That makes this single one to be written in bold, and, at PDF output, at the same line as its description. Use the same convention as the other parameters, in order to adjust its output. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: v4l2 uapi book: get rid of driver programming's chapterMauro Carvalho Chehab2017-09-052-10/+0
| | | | | | | | | | It doesn't make any sense having a driver programming's chapter at the uAPI book, as this is related to kernel API. Also, we now have such kAPI book where V4L2 driver programming is covered. So, get rid of this left-over. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: format.rst: use the right markup for important notesMauro Carvalho Chehab2017-09-051-1/+1
| | | | | | | | There's an important note there, but it is not using the ReST markup. So, it doesn't get any visual highlight on the output. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: docs-rst: cardlists: change their format to flat-tablesMauro Carvalho Chehab2017-09-0510-790/+3101
| | | | | | | | | | | | | | | | | | | | Most tables there don't fit on 80 columns. Some are very big. While those tables are actually generated via scripts, every time a new board is added, the entire table could be reformatted. >From the diffstat PoV, that's bad, as it is hard to see what happened. One such example is at changeset 4868f6e1fce6 ("media: em28xx-cardlist.rst: update to reflect last changes"): The USB ID for "Plextor ConvertX PX-AV100U" was added to card number 9, with caused the entire table to be reformatted. So, instead, use flat-tables. While here, fix PDF output, by adding tablecolumns to the tables that need it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: em28xx-cardlist.rst: update to reflect last changesMauro Carvalho Chehab2017-09-051-104/+106
| | | | | | | There were some new board additions. Update the cardlist accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: v4l2-event.rst: adjust table to fit on PDF outputMauro Carvalho Chehab2017-09-051-0/+2
| | | | | | | | The tables there don't quite fit on PDF output. Adjust it by adding a tabularcolumns macro. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: docs: don't show ToC for each part on PDF outputMauro Carvalho Chehab2017-09-0510-10/+31
| | | | | | | | | | The "Table of Contents" of a PDF file is generated only once, at the beginning fo the output. It doesn't produce it on each part. So, don't output this text on each part of the document. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: cec uapi: Adjust table sizes for PDF outputMauro Carvalho Chehab2017-09-054-6/+14
| | | | | | | Several tables at this media book chapter have issues when PDF is produced. Adjust them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: mc uapi: adjust some table sizes for PDF outputMauro Carvalho Chehab2017-09-053-3/+3
| | | | | | | | Some cells are too small to fit the text written to it. Increase it. No text changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: rc-sysfs-nodes.rst: better use literalsMauro Carvalho Chehab2017-09-051-5/+5
| | | | | | | | | | | | A literal box provides a better visual when pdf and html output is generated for things like the output of a sysfs devnode. It alsod matches other conventions used within the media book. So, use it. While here, use literals for protocol names. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: docs: fix PDF build with Sphinx 1.4Mauro Carvalho Chehab2017-09-052-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | Commit 70b074df4ed1 ("media: fix pdf build with Spinx 1.6") caused a regression at Sphinx 1.4 PDF build: although it produces a full document in batch mode, it returns errors on interactive mode: [63] Runaway argument? {\relax ! Paragraph ended before \multicolumn was complete. <to be read again> \par l.7703 \hline\end{tabulary} The error seems to be due to some bug at Sphinx PDF output: when multicolumns is used, it doesn't accept an empty string. Just removing the :cpan:`1` and replacing by two empty columns fix the issue. Fixes: 70b074df4ed1 ("media: fix pdf build with Spinx 1.6") Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: v4l uAPI docs: adjust some tables for PDF outputMauro Carvalho Chehab2017-09-055-4/+8
| | | | | | | | | | | On tests with Spinx 1.4, some tables are still writing text outside cells. Adjust those tables. PS.: As this was revisited several times, I suspect that this will only be fully fixed if we add tabularcolumns to all tables at the V4L2 part of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: vidioc-g-tuner.rst: Fix table number of colsMauro Carvalho Chehab2017-09-051-3/+6
| | | | | | | | | | The Tuner Audio Matrix table is broken: the first row has 7 columns instead of 6, causing it to be parsed wrong and displayed very badly on PDF output. Fix it and adjust the table to look nice at PDF output Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: vidioc-querycap: use a more realistic value for KERNEL_VERSIONMauro Carvalho Chehab2017-09-051-2/+3
| | | | | | | | | | | | | In the past, V4L2 versions were 0.x.y, but that changed years ago. Since Kernel 3.1, however, the numbering schema was changed to match the Kernel version. However, the presented example still uses the old numerating schema, with is a misleading information. So, update it to the new schema. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: v4l uAPI: add descriptions for arguments to all ioctlsMauro Carvalho Chehab2017-09-0558-12/+60
| | | | | | | | | | | Several ioctls are missing descriptions for the third argument of the ioctl() command. They should have a description, as otherwise the output won't be ok, and will sound like something is missing. So, add them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: ca.h: document ca_msg and the corresponding ioctlsMauro Carvalho Chehab2017-09-053-15/+21
| | | | | | | | | | | | Usually, CA messages are sent/received via reading/writing at the CA device node. However, two drivers (dst_ca and firedtv-ci) also implement it via ioctls. Apparently, on both cases, the net result is the same. Anyway, let's document it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: ca docs: document CA_SET_DESCR ioctl and structsMauro Carvalho Chehab2017-09-052-14/+10
| | | | | | | | | | The av7110 driver uses CA_SET_DESCR to store the descrambler control words at the CA descrambler slots. Document it. Thanks-to: Honza Petrouš <jpetrous@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: net.h: add kernel-doc and use it at Documentation/Mauro Carvalho Chehab2017-09-054-34/+25
| | | | | | | | | | As we did with frontend.h, ca.h and dmx.h, move the struct definition to net.h. That should help to keep it updated, as more stuff gets added there. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: frontend.h: Avoid the term DVB when doesn't refer to a delivery systemMauro Carvalho Chehab2017-09-051-3/+3
| | | | | | | The DVB term can either refer to the subsystem or to a delivery system. Avoid it in the first case at the kernel-doc markups. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: intro.rst: don't assume audio and video codecs to be MPEG2Mauro Carvalho Chehab2017-09-051-5/+4
| | | | | | | | Originally, when DVB was introduced, all codecs would be part of MPEG2 standard. That's not true anymore, as there are a large number of codec standards used on digital TV nowadays. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvbstb.svg: use dots for the optional parts of the hardwareMauro Carvalho Chehab2017-09-051-16/+15
| | | | | | | The hardware description mentions that some parts are optional. Make it clearer at the drawing. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dmx-get-pes-pids.rst: document the ioctlMauro Carvalho Chehab2017-09-051-2/+20
| | | | | | | | | This ioctl is supported by the DVB core, but was never documented. Add a documentation for it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb uAPI docs: minor editorial changesMauro Carvalho Chehab2017-09-0516-52/+59
| | | | | | | | | | | | | Do minor editorial changes to improve documentation readability: - mark literals as such; - add table markups to hint sizes; - define what PES means; - instead of hardcoding devnode numbers to zero (like adapter0/) use a question mark, to indicate that multiple devnodes may exist; - add cross-references where useful. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvbapi.rst: add an entry to DVB revision historyMauro Carvalho Chehab2017-09-051-1/+6
| | | | | | | There are several missing items at the API history. Yet, as we're doing a significant change there, add a new entry. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb-frontend-parameters.rst: fix the name of a structMauro Carvalho Chehab2017-09-051-1/+1
| | | | | | | | | The struct that contains an union of DVB parameters is called dvb_frontend_parameters (and not FrontendParameters). Fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dmx-fread.rst: specify how DMX_CHECK_CRC worksMauro Carvalho Chehab2017-09-051-0/+7
| | | | | | | | | | In the past, the documentation used to say that, if a CRC error was found, a "-ECRC" error would be returned. That's not true: the DVB core will just silently ignore such errors. So, add an explicit note about that. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* media: dvb uAPI docs: Prefer use "Digital TV instead of "DVB"Mauro Carvalho Chehab2017-09-0541-126/+149
| | | | | | | | | | | The usage of the term "DVB" at the dvb API docs is confusing, as, right now, it can refer to either the European digital TV standard or to the subsystem. So, prefer calling it as "Digital TV" on most places, to avoid ambiguity. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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