#
9cc0f40c |
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23-Sep-2023 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dev.h: increase struct video_device name size Increase the size of the name field to prevent a lot of string truncate compiler warnings. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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#
9e3576a1 |
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31-Aug-2022 |
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> |
media: mc: convert pipeline funcs to take media_pad Now that the pipeline is stored into pads instead of entities, we can change the relevant functions to take pads instead of entities. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
d9f44345 |
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31-Aug-2022 |
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> |
media: mc: entity: add alloc variant of pipeline_start Add new variant of media_pipeline_start(), media_pipeline_alloc_start(). media_pipeline_alloc_start() can be used by drivers that do not need to extend the media_pipeline. The function will either use the pipeline already associated with the entity, if such exists, or allocate a new pipeline. When media_pipeline_stop() is called and the pipeline's use count drops to zero, the pipeline is automatically freed. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
340eba47 |
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31-Aug-2022 |
Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> |
media: v4l2-dev: Add videodev wrappers for media pipelines With the upcoming stream related improvements to the pipelines, the pipelines are moved from media entities to media pads. As the drivers currently use the pipelines with the entity based model, moving the pipelines to pads will cause changes to the drivers. However, most of the uses of media pipelines are related to a video device (a DMA engine) with a single pad, and thus there's never a need to support multiple pads in these use cases. We can avoid pushing the complexities of the pad based model to the drivers by adding video device wrappers for the pipeline related functions. This patch adds a number of wrappers to media_pipeline functions, all of which take a video_device as a parameter (instead of a media_entity), and verify that there's just one pad. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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#
d66302f6 |
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15-Sep-2021 |
Yajun Deng <yajun.deng@linux.dev> |
media: v4l2-dev.h: move open brace after struct video_device The open brace should be after a struct of define, that's good for searching. Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
b0649455 |
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23-Oct-2020 |
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
media: fix kernel-doc markups Some identifiers have different names between their prototypes and the kernel-doc markup. Seome seems to be due to cut-and-paste related issues. Others need to be fixed, as kernel-doc markups should use this format: identifier - description Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> # IPU3 and V4L2 Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
f75c431e |
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07-May-2020 |
Jacopo Mondi <jacopo@jmondi.org> |
media: v4l2-dev: Add v4l2_device_register_ro_subdev_node() Add to the V4L2 core a function to register device nodes for video subdevices in read-only mode. Registering a device node in read-only mode is useful to expose to userspace the current sub-device configuration, without allowing application to change it by using the V4L2 subdevice ioctls. Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
dc42cf74 |
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02-Feb-2020 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: v4l2-dev.h: remove VFL_TYPE_GRABBER The last driver was converted to use VFL_TYPE_VIDEO, so the old _GRABBER enum can now be removed. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
238e4a5b |
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02-Feb-2020 |
Hans Verkuil <hverkuil-cisco@xs4all.nl> |
media: rename VFL_TYPE_GRABBER to _VIDEO We currently have the following devnode types: enum vfl_devnode_type { VFL_TYPE_GRABBER = 0, VFL_TYPE_VBI, VFL_TYPE_RADIO, VFL_TYPE_SUBDEV, VFL_TYPE_SDR, VFL_TYPE_TOUCH, VFL_TYPE_MAX /* Shall be the last one */ }; They all make sense, except for the first: GRABBER really refers to /dev/videoX devices, which can be capture, output or m2m, so 'grabber' doesn't even refer to their function anymore. Let's call a spade a spade and rename this to VFL_TYPE_VIDEO. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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#
8cbd94bd |
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04-Oct-2018 |
Hans Verkuil <hans.verkuil@cisco.com> |
media: v4l2-ioctl: add QUIRK_INVERTED_CROP Some old Samsung drivers use the legacy crop API incorrectly: the crop and compose targets are swapped. Normally VIDIOC_G_CROP will return the CROP rectangle of a CAPTURE stream and the COMPOSE rectangle of an OUTPUT stream. The Samsung drivers do the opposite. Note that these drivers predate the selection API. If this 'QUIRK' flag is set, then the v4l2-ioctl core will swap the CROP and COMPOSE targets as well. That way backwards compatibility is ensured and we can convert the Samsung drivers to the selection API. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
73a11062 |
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11-May-2018 |
Hans Verkuil <hansverk@cisco.com> |
media: v4l2-core: push taking ioctl mutex down to ioctl handler The ioctl serialization mutex (vdev->lock or q->lock for vb2 queues) was taken at the highest level in v4l2-dev.c. This prevents more fine-grained locking since at that level we cannot examine the ioctl arguments, we can only do that after video_usercopy is called. So push the locking down to __video_do_ioctl() and subdev_do_ioctl_lock(). This also allows us to make a few functions in v4l2-ioctl.c static and video_usercopy() is no longer exported. The locking scheme is not changed by this patch, just pushed down. Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
0d5615d3 |
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12-May-2018 |
Hans Verkuil <hans.verkuil@cisco.com> |
media: v4l2-ioctl: delete unused v4l2_disable_ioctl_locking The last user of this 'feature' was the gspca driver. Now that that driver has been converted to vb2 we can delete this code. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
5bc3744c |
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03-May-2018 |
Hans Verkuil <hverkuil@xs4all.nl> |
media: v4l2-dev.h: fix doc warning Fix this warning when building the docs: include/media/v4l2-dev.h:42: warning: Enum value 'VFL_TYPE_MAX' not described in enum 'vfl_devnode_type' Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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#
a95845ba |
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05-Apr-2018 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-core: fix size of devnode_nums[] bitarray The size of devnode_nums[] bit array is too short to store information for VFL_TYPE_TOUCH. That causes it to override other memory regions. Thankfully, on recent reports, it is overriding video_device[] array, trigging a WARN_ON(). Yet, it just warns about the problem, but let the code excecuting, with generates an OOPS: [ 43.177394] WARNING: CPU: 1 PID: 711 at drivers/media/v4l2-core/v4l2-dev.c:945 __video_register_device+0xc99/0x1090 [videodev] [ 43.177396] Modules linked in: hid_sensor_custom hid_sensor_als hid_sensor_incl_3d hid_sensor_rotation hid_sensor_magn_3d hid_sensor_accel_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf joydev hid_sensor_iio_common hid_rmi(+) rmi_core industrialio videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev hid_multitouch media hid_sensor_hub binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi arc4 snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_dsp snd_soc_sst_ipc snd_hda_codec_realtek snd_soc_acpi snd_hda_codec_generic snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec intel_rapl snd_hda_core x86_pkg_temp_thermal snd_hwdep intel_powerclamp coretemp snd_pcm kvm_intel snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul [ 43.177426] crc32_pclmul ghash_clmulni_intel iwlmvm pcbc mac80211 snd_seq aesni_intel iwlwifi aes_x86_64 snd_seq_device crypto_simd glue_helper cryptd snd_timer intel_cstate intel_rapl_perf input_leds serio_raw intel_wmi_thunderbolt snd wmi_bmof cfg80211 soundcore ideapad_laptop sparse_keymap idma64 virt_dma tpm_crb acpi_pad int3400_thermal acpi_thermal_rel intel_pch_thermal processor_thermal_device mac_hid int340x_thermal_zone mei_me intel_soc_dts_iosf mei intel_lpss_pci shpchp intel_lpss sch_fq_codel vfio_pci nfsd vfio_virqfd parport_pc ppdev auth_rpcgss nfs_acl lockd grace lp parport sunrpc ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid kvmgt vfio_mdev mdev vfio_iommu_type1 vfio kvm irqbypass i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect [ 43.177466] sysimgblt cqhci fb_sys_fops sdhci drm i2c_hid wmi hid video pinctrl_sunrisepoint pinctrl_intel [ 43.177474] CPU: 1 PID: 711 Comm: systemd-udevd Not tainted 4.16.0 #1 [ 43.177475] Hardware name: LENOVO 80UE/VIUU4, BIOS 2UCN10T 10/14/2016 [ 43.177481] RIP: 0010:__video_register_device+0xc99/0x1090 [videodev] [ 43.177482] RSP: 0000:ffffa5c5c231b420 EFLAGS: 00010202 [ 43.177484] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 43.177485] RDX: ffffffffc0c44cc0 RSI: ffffffffffffffff RDI: ffffffffc0c44cc0 [ 43.177486] RBP: ffffa5c5c231b478 R08: ffffffffc0c96900 R09: ffff8eda1a51f018 [ 43.177487] R10: 0000000000000600 R11: 00000000000003b6 R12: 0000000000000000 [ 43.177488] R13: 0000000000000005 R14: ffffffffc0c96900 R15: ffff8eda1d6d91c0 [ 43.177489] FS: 00007fd2d8ef2480(0000) GS:ffff8eda33480000(0000) knlGS:0000000000000000 [ 43.177490] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.177491] CR2: 00007ffe0a6ad01c CR3: 0000000456ae2004 CR4: 00000000003606e0 [ 43.177492] Call Trace: [ 43.177498] ? devres_add+0x5f/0x70 [ 43.177502] rmi_f54_probe+0x437/0x470 [rmi_core] [ 43.177505] rmi_function_probe+0x25/0x30 [rmi_core] [ 43.177507] driver_probe_device+0x310/0x480 [ 43.177509] __device_attach_driver+0x86/0x100 [ 43.177511] ? __driver_attach+0xf0/0xf0 [ 43.177512] bus_for_each_drv+0x6b/0xb0 [ 43.177514] __device_attach+0xdd/0x160 [ 43.177516] device_initial_probe+0x13/0x20 [ 43.177518] bus_probe_device+0x95/0xa0 [ 43.177519] device_add+0x44b/0x680 [ 43.177522] rmi_register_function+0x62/0xd0 [rmi_core] [ 43.177525] rmi_create_function+0x112/0x1a0 [rmi_core] [ 43.177527] ? rmi_driver_clear_irq_bits+0xc0/0xc0 [rmi_core] [ 43.177530] rmi_scan_pdt+0xca/0x1a0 [rmi_core] [ 43.177535] rmi_init_functions+0x5b/0x120 [rmi_core] [ 43.177537] rmi_driver_probe+0x152/0x3c0 [rmi_core] [ 43.177547] ? sysfs_create_link+0x25/0x40 [ 43.177549] driver_probe_device+0x310/0x480 [ 43.177551] __device_attach_driver+0x86/0x100 [ 43.177553] ? __driver_attach+0xf0/0xf0 [ 43.177554] bus_for_each_drv+0x6b/0xb0 [ 43.177556] __device_attach+0xdd/0x160 [ 43.177558] device_initial_probe+0x13/0x20 [ 43.177560] bus_probe_device+0x95/0xa0 [ 43.177561] device_add+0x44b/0x680 [ 43.177564] rmi_register_transport_device+0x84/0x100 [rmi_core] [ 43.177568] rmi_input_configured+0xbf/0x1a0 [hid_rmi] [ 43.177571] ? input_allocate_device+0xdf/0xf0 [ 43.177574] hidinput_connect+0x4a9/0x37a0 [hid] [ 43.177578] hid_connect+0x326/0x3d0 [hid] [ 43.177581] hid_hw_start+0x42/0x70 [hid] [ 43.177583] rmi_probe+0x115/0x510 [hid_rmi] [ 43.177586] hid_device_probe+0xd3/0x150 [hid] [ 43.177588] ? sysfs_create_link+0x25/0x40 [ 43.177590] driver_probe_device+0x310/0x480 [ 43.177592] __driver_attach+0xbf/0xf0 [ 43.177593] ? driver_probe_device+0x480/0x480 [ 43.177595] bus_for_each_dev+0x74/0xb0 [ 43.177597] ? kmem_cache_alloc_trace+0x1a6/0x1c0 [ 43.177599] driver_attach+0x1e/0x20 [ 43.177600] bus_add_driver+0x167/0x260 [ 43.177602] ? 0xffffffffc0cbc000 [ 43.177604] driver_register+0x60/0xe0 [ 43.177605] ? 0xffffffffc0cbc000 [ 43.177607] __hid_register_driver+0x63/0x70 [hid] [ 43.177610] rmi_driver_init+0x23/0x1000 [hid_rmi] [ 43.177612] do_one_initcall+0x52/0x191 [ 43.177615] ? _cond_resched+0x19/0x40 [ 43.177617] ? kmem_cache_alloc_trace+0xa2/0x1c0 [ 43.177619] ? do_init_module+0x27/0x209 [ 43.177621] do_init_module+0x5f/0x209 [ 43.177623] load_module+0x1987/0x1f10 [ 43.177626] ? ima_post_read_file+0x96/0xa0 [ 43.177629] SYSC_finit_module+0xfc/0x120 [ 43.177630] ? SYSC_finit_module+0xfc/0x120 [ 43.177632] SyS_finit_module+0xe/0x10 [ 43.177634] do_syscall_64+0x73/0x130 [ 43.177637] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.177638] RIP: 0033:0x7fd2d880b839 [ 43.177639] RSP: 002b:00007ffe0a6b2368 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 43.177641] RAX: ffffffffffffffda RBX: 000055cdd86542e0 RCX: 00007fd2d880b839 [ 43.177641] RDX: 0000000000000000 RSI: 00007fd2d84ea0e5 RDI: 0000000000000016 [ 43.177642] RBP: 00007fd2d84ea0e5 R08: 0000000000000000 R09: 00007ffe0a6b2480 [ 43.177643] R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000000 [ 43.177644] R13: 000055cdd8688930 R14: 0000000000020000 R15: 000055cdd86542e0 [ 43.177645] Code: 48 c7 c7 54 b4 c3 c0 e8 96 9d ec dd e9 d4 fb ff ff 0f 0b 41 be ea ff ff ff e9 c7 fb ff ff 0f 0b 41 be ea ff ff ff e9 ba fb ff ff <0f> 0b e9 d8 f4 ff ff 83 fa 01 0f 84 c4 02 00 00 48 83 78 68 00 [ 43.177675] ---[ end trace d44d9bc41477c2dd ]--- [ 43.177679] BUG: unable to handle kernel NULL pointer dereference at 0000000000000499 [ 43.177723] IP: __video_register_device+0x1cc/0x1090 [videodev] [ 43.177749] PGD 0 P4D 0 [ 43.177764] Oops: 0000 [#1] SMP PTI [ 43.177780] Modules linked in: hid_sensor_custom hid_sensor_als hid_sensor_incl_3d hid_sensor_rotation hid_sensor_magn_3d hid_sensor_accel_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf joydev hid_sensor_iio_common hid_rmi(+) rmi_core industrialio videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev hid_multitouch media hid_sensor_hub binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi arc4 snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_dsp snd_soc_sst_ipc snd_hda_codec_realtek snd_soc_acpi snd_hda_codec_generic snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec intel_rapl snd_hda_core x86_pkg_temp_thermal snd_hwdep intel_powerclamp coretemp snd_pcm kvm_intel snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul [ 43.178055] crc32_pclmul ghash_clmulni_intel iwlmvm pcbc mac80211 snd_seq aesni_intel iwlwifi aes_x86_64 snd_seq_device crypto_simd glue_helper cryptd snd_timer intel_cstate intel_rapl_perf input_leds serio_raw intel_wmi_thunderbolt snd wmi_bmof cfg80211 soundcore ideapad_laptop sparse_keymap idma64 virt_dma tpm_crb acpi_pad int3400_thermal acpi_thermal_rel intel_pch_thermal processor_thermal_device mac_hid int340x_thermal_zone mei_me intel_soc_dts_iosf mei intel_lpss_pci shpchp intel_lpss sch_fq_codel vfio_pci nfsd vfio_virqfd parport_pc ppdev auth_rpcgss nfs_acl lockd grace lp parport sunrpc ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid kvmgt vfio_mdev mdev vfio_iommu_type1 vfio kvm irqbypass i915 i2c_algo_bit drm_kms_helper syscopyarea sdhci_pci sysfillrect [ 43.178337] sysimgblt cqhci fb_sys_fops sdhci drm i2c_hid wmi hid video pinctrl_sunrisepoint pinctrl_intel [ 43.178380] CPU: 1 PID: 711 Comm: systemd-udevd Tainted: G W 4.16.0 #1 [ 43.178411] Hardware name: LENOVO 80UE/VIUU4, BIOS 2UCN10T 10/14/2016 [ 43.178441] RIP: 0010:__video_register_device+0x1cc/0x1090 [videodev] [ 43.178467] RSP: 0000:ffffa5c5c231b420 EFLAGS: 00010202 [ 43.178490] RAX: ffffffffc0c44cc0 RBX: 0000000000000005 RCX: ffffffffc0c454c0 [ 43.178519] RDX: 0000000000000001 RSI: ffff8eda1d6d9118 RDI: ffffffffc0c44cc0 [ 43.178549] RBP: ffffa5c5c231b478 R08: ffffffffc0c96900 R09: ffff8eda1a51f018 [ 43.178579] R10: 0000000000000600 R11: 00000000000003b6 R12: 0000000000000000 [ 43.178608] R13: 0000000000000005 R14: ffffffffc0c96900 R15: ffff8eda1d6d91c0 [ 43.178636] FS: 00007fd2d8ef2480(0000) GS:ffff8eda33480000(0000) knlGS:0000000000000000 [ 43.178669] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.178693] CR2: 0000000000000499 CR3: 0000000456ae2004 CR4: 00000000003606e0 [ 43.178721] Call Trace: [ 43.178736] ? devres_add+0x5f/0x70 [ 43.178755] rmi_f54_probe+0x437/0x470 [rmi_core] [ 43.178779] rmi_function_probe+0x25/0x30 [rmi_core] [ 43.178805] driver_probe_device+0x310/0x480 [ 43.178828] __device_attach_driver+0x86/0x100 [ 43.178851] ? __driver_attach+0xf0/0xf0 [ 43.178884] bus_for_each_drv+0x6b/0xb0 [ 43.178904] __device_attach+0xdd/0x160 [ 43.178925] device_initial_probe+0x13/0x20 [ 43.178948] bus_probe_device+0x95/0xa0 [ 43.178968] device_add+0x44b/0x680 [ 43.178987] rmi_register_function+0x62/0xd0 [rmi_core] [ 43.181747] rmi_create_function+0x112/0x1a0 [rmi_core] [ 43.184677] ? rmi_driver_clear_irq_bits+0xc0/0xc0 [rmi_core] [ 43.187505] rmi_scan_pdt+0xca/0x1a0 [rmi_core] [ 43.190171] rmi_init_functions+0x5b/0x120 [rmi_core] [ 43.192809] rmi_driver_probe+0x152/0x3c0 [rmi_core] [ 43.195403] ? sysfs_create_link+0x25/0x40 [ 43.198253] driver_probe_device+0x310/0x480 [ 43.201083] __device_attach_driver+0x86/0x100 [ 43.203800] ? __driver_attach+0xf0/0xf0 [ 43.206503] bus_for_each_drv+0x6b/0xb0 [ 43.209291] __device_attach+0xdd/0x160 [ 43.212207] device_initial_probe+0x13/0x20 [ 43.215146] bus_probe_device+0x95/0xa0 [ 43.217885] device_add+0x44b/0x680 [ 43.220597] rmi_register_transport_device+0x84/0x100 [rmi_core] [ 43.223321] rmi_input_configured+0xbf/0x1a0 [hid_rmi] [ 43.226051] ? input_allocate_device+0xdf/0xf0 [ 43.228814] hidinput_connect+0x4a9/0x37a0 [hid] [ 43.231701] hid_connect+0x326/0x3d0 [hid] [ 43.234548] hid_hw_start+0x42/0x70 [hid] [ 43.237302] rmi_probe+0x115/0x510 [hid_rmi] [ 43.239862] hid_device_probe+0xd3/0x150 [hid] [ 43.242558] ? sysfs_create_link+0x25/0x40 [ 43.242828] audit: type=1400 audit(1522795151.600:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/4206/usr/lib/snapd/snap-confine" pid=1151 comm="apparmor_parser" [ 43.244859] driver_probe_device+0x310/0x480 [ 43.244862] __driver_attach+0xbf/0xf0 [ 43.246982] audit: type=1400 audit(1522795151.600:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/4206/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=1151 comm="apparmor_parser" [ 43.249403] ? driver_probe_device+0x480/0x480 [ 43.249405] bus_for_each_dev+0x74/0xb0 [ 43.253200] audit: type=1400 audit(1522795151.600:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/4206/usr/lib/snapd/snap-confine//snap_update_ns" pid=1151 comm="apparmor_parser" [ 43.254055] ? kmem_cache_alloc_trace+0x1a6/0x1c0 [ 43.256282] audit: type=1400 audit(1522795151.604:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=1152 comm="apparmor_parser" [ 43.258436] driver_attach+0x1e/0x20 [ 43.260875] audit: type=1400 audit(1522795151.604:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1152 comm="apparmor_parser" [ 43.263118] bus_add_driver+0x167/0x260 [ 43.267676] audit: type=1400 audit(1522795151.604:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=1152 comm="apparmor_parser" [ 43.268807] ? 0xffffffffc0cbc000 [ 43.268812] driver_register+0x60/0xe0 [ 43.271184] audit: type=1400 audit(1522795151.604:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=1152 comm="apparmor_parser" [ 43.274081] ? 0xffffffffc0cbc000 [ 43.274086] __hid_register_driver+0x63/0x70 [hid] [ 43.288367] rmi_driver_init+0x23/0x1000 [hid_rmi] [ 43.291501] do_one_initcall+0x52/0x191 [ 43.292348] audit: type=1400 audit(1522795151.652:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/man" pid=1242 comm="apparmor_parser" [ 43.294212] ? _cond_resched+0x19/0x40 [ 43.300028] ? kmem_cache_alloc_trace+0xa2/0x1c0 [ 43.303475] ? do_init_module+0x27/0x209 [ 43.306842] do_init_module+0x5f/0x209 [ 43.310269] load_module+0x1987/0x1f10 [ 43.313704] ? ima_post_read_file+0x96/0xa0 [ 43.317174] SYSC_finit_module+0xfc/0x120 [ 43.320754] ? SYSC_finit_module+0xfc/0x120 [ 43.324065] SyS_finit_module+0xe/0x10 [ 43.327387] do_syscall_64+0x73/0x130 [ 43.330909] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.334305] RIP: 0033:0x7fd2d880b839 [ 43.337810] RSP: 002b:00007ffe0a6b2368 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 43.341259] RAX: ffffffffffffffda RBX: 000055cdd86542e0 RCX: 00007fd2d880b839 [ 43.344613] RDX: 0000000000000000 RSI: 00007fd2d84ea0e5 RDI: 0000000000000016 [ 43.347962] RBP: 00007fd2d84ea0e5 R08: 0000000000000000 R09: 00007ffe0a6b2480 [ 43.351456] R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000000 [ 43.354845] R13: 000055cdd8688930 R14: 0000000000020000 R15: 000055cdd86542e0 [ 43.358224] Code: c7 05 ad 12 02 00 00 00 00 00 48 8d 88 00 08 00 00 eb 09 48 83 c0 08 48 39 c1 74 31 48 8b 10 48 85 d2 74 ef 49 8b b7 98 04 00 00 <48> 39 b2 98 04 00 00 75 df 48 63 92 f8 04 00 00 f0 48 0f ab 15 [ 43.361764] RIP: __video_register_device+0x1cc/0x1090 [videodev] RSP: ffffa5c5c231b420 [ 43.365281] CR2: 0000000000000499 This patch fixes the array size and changes the WARN_ON() to return an error, instead of letting the Kernel to proceed with registering. Cc: stable@vger.kernel.org # For Kernel 4.16 Fixes: 4839c58f034a ("media: v4l2-dev: convert VFL_TYPE_* into an enum") Reported-by: Peter Geis <pgwipeout@gmail.com> Reported-by: Jaak Ristioja <jaak@ristioja.ee> Reported-by: Michał Siemek <mihau69@gmail.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
|
#
7b73ce9d |
|
25-Jan-2018 |
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> |
media: v4l2-dev.h: fix symbol collision in media_entity_to_video_device() A recent change to the media_entity_to_video_device() macro breaks some use-cases for the macro due to a symbol collision. Before the change this worked: vdev = media_entity_to_video_device(link->sink->entity); While after the change it results in a compiler error "error: 'struct video_device' has no member named 'link'; did you mean 'lock'?". While the following still works after the change. struct media_entity *entity = link->sink->entity; vdev = media_entity_to_video_device(entity); Fix the collision by renaming the macro argument to '__entity'. Fixes: 69b925c5fc36d8f1 ("media: v4l2-dev.h: add kernel-doc to two macros") Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
4a3fad70 |
|
04-Jan-2018 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: fix usage of whitespaces and on indentation On several places, whitespaces are being used for indentation, or even at the end of the line. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
63b31ffd |
|
05-Oct-2017 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-dev: document video_device flags Convert #defines to enums and add kernel-doc markups for V4L2 video_device flags. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
468fde0b |
|
05-Oct-2017 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-dev: document VFL_DIR_* direction defines The V4L_DIR_* direction flags document the direction for a V4L2 device node. Convert them to enum and document. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
4839c58f |
|
28-Sep-2017 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-dev: convert VFL_TYPE_* into an enum Using enums makes easier to document, as it can use kernel-doc markups. It also allows cross-referencing, with increases the kAPI readability. Please notice that now cx88_querycap() has to have a default for the VFL type, as there are more types than supported by the driver. Acked-By: Mike Isely <isely@pobox.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
69b925c5 |
|
28-Sep-2017 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
media: v4l2-dev.h: add kernel-doc to two macros There are two macros at v4l2-dev.h that aren't documented. Document them, for completeness. Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
a3f8683b |
|
02-Jul-2017 |
Al Viro <viro@zeniv.linux.org.uk> |
->poll() methods should return __poll_t The most common place to find POLL... bitmaps: return values of ->poll() and its subsystem counterparts. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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#
b2441318 |
|
01-Nov-2017 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e383ce07 |
|
22-Sep-2016 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
[media] get rid of a number of problems at the cross references As warned by linuxdoc[1] tool, using: $ for i in $(git grep kernel-doc Documentation/media/kapi/|cut -d: -f4); do kernel-lintdoc --sloppy $i; done include/media/v4l2-dev.h:118 :WARN: function name from comment differs: v4l2_prio_close <--> v4l2_prio_check include/media/v4l2-mc.h:56 [kernel-doc WARN] : enum name from comment differs: if_vid_dec_index <--> if_vid_dec_pad_index include/media/v4l2-mc.h:71 [kernel-doc WARN] : enum name from comment differs: if_aud_dec_index <--> if_aud_dec_pad_index include/media/v4l2-mem2mem.h:396 [kernel-doc WARN] : function name from comment differs: v4l2_m2m_num_src_bufs_ready <--> v4l2_m2m_num_dst_bufs_ready drivers/media/dvb-core/dvb_math.h:28 [kernel-doc WARN] : function name from comment differs: cintlog2 <--> intlog2 include/media/v4l2-subdev.h:215 [kernel-doc WARN] : struct name from comment differs: s_radio <--> v4l2_subdev_tuner_ops include/media/v4l2-subdev.h:890 [kernel-doc WARN] : function name from comment differs: v4l2_set_subdevdata <--> v4l2_set_subdev_hostdata include/media/v4l2-subdev.h:901 [kernel-doc WARN] : function name from comment differs: v4l2_get_subdevdata <--> v4l2_get_subdev_hostdata drivers/media/dvb-core/dvb_ringbuffer.h:196 [kernel-doc WARN] : function name from comment differs: dvb_ringbuffer_writeuser <--> dvb_ringbuffer_write_user include/media/videobuf2-core.h:399 [kernel-doc WARN] : struct name from comment differs: vb2_ops <--> vb2_buf_ops include/media/media-entity.h:132 [kernel-doc ERROR] : duplicate parameter definition 'source' include/media/media-entity.h:477 [kernel-doc WARN] : function name from comment differs: media_entity_enum_test <--> media_entity_enum_test_and_set include/media/media-entity.h:535 [kernel-doc WARN] : function name from comment differs: gobj_to_entity <--> gobj_to_pad include/media/media-entity.h:544 [kernel-doc WARN] : function name from comment differs: gobj_to_entity <--> gobj_to_link include/media/media-entity.h:553 [kernel-doc WARN] : function name from comment differs: gobj_to_entity <--> gobj_to_intf include/media/media-entity.h:562 [kernel-doc WARN] : function name from comment differs: gobj_to_entity <--> intf_to_devnode include/media/rc-core.h:234 [kernel-doc WARN] : function name from comment differs: rc_open <--> rc_close include/media/v4l2-ctrls.h:397 [kernel-doc WARN] : missing initial short description of 'v4l2_ctrl_handler_init' include/media/v4l2-dev.h:118 [kernel-doc WARN] : function name from comment differs: v4l2_prio_close <--> v4l2_prio_check include/media/v4l2-event.h:225 [kernel-doc WARN] : missing initial short description of 'v4l2_src_change_event_subscribe' [1] https://return42.github.io/linuxdoc/linux.html The above are real issues at the documentation. On several cases, caused by cut-and-paste. Fix them. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
ffa0441e |
|
29-Aug-2016 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
[media] docs-rst: use C domain for enum references on uapi Change the parse-headers.pl and the corresponding files to use the C domain for enum references. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
b2fe22d0 |
|
18-Jul-2016 |
Nick Dyer <nick@shmanahar.org> |
[media] v4l2-core: Add support for touch devices Some touch controllers send out touch data in a similar way to a greyscale frame grabber. Add new device type VFL_TYPE_TOUCH: - This uses a new device prefix v4l-touch for these devices, to stop generic capture software from treating them as webcams. Otherwise, touch is treated similarly to video capture. - Add V4L2_INPUT_TYPE_TOUCH - Add MEDIA_INTF_T_V4L_TOUCH - Add V4L2_CAP_TOUCH to indicate device is a touch device Add formats: - V4L2_TCH_FMT_DELTA_TD16 for signed 16-bit touch deltas - V4L2_TCH_FMT_DELTA_TD08 for signed 16-bit touch deltas - V4L2_TCH_FMT_TU16 for unsigned 16-bit touch data - V4L2_TCH_FMT_TU08 for unsigned 8-bit touch data This support will be used by: - Atmel maXTouch (atmel_mxt_ts) - Synaptics RMI4. - sur40 Signed-off-by: Nick Dyer <nick@shmanahar.org> Tested-by: Chris Healy <cphealy@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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#
564aaf69 |
|
23-Jul-2016 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
[media] doc-rst: add some needed escape codes Some extra escape codes are needed to avoid Sphinx to not identify the tags. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
d9d3d176 |
|
21-Jul-2016 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
[media] doc-rst: document v4l2-dev.h Add documentation for v4l2-dev.h, and put it at v4l2-framework.rst, where struct video_device is currently documented. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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#
7bbe7813 |
|
01-Mar-2016 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2: add device_caps to struct video_device Instead of letting drivers fill in device_caps at querycap time, let them fill it in when the video device is registered. This has the advantage that in the future the v4l2 core can access the video device's capabilities and take decisions based on that. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
d0a164f5 |
|
11-Feb-2016 |
Shuah Khan <shuah@kernel.org> |
[media] media: v4l-core add enable/disable source common interfaces Add a new interfaces to be used by v4l-core to invoke enable source and disable_source handlers in the media_device. The enable_source helper function invokes the enable_source handler to find media source entity connected to the entity and check is it is available or busy. If source is available, link is activated and pipeline is started. The disable_source helper function invokes the disable_source handler to deactivate and stop the pipeline. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
d9c21e3e |
|
24-Aug-2015 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
[media] v4l2-core: create MC interfaces for devnodes V4L2 device (and subdevice) nodes should create an interface, if the Media Controller support is enabled. Please notice that radio devices should not create an entity, as radio input/output is either via wires or via ALSA. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
5cf6f7f3 |
|
17-Feb-2015 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-core: remove the old .ioctl BKL replacement To keep V4L2 drivers that did not yet convert to unlocked_ioctl happy, the v4l2 core had a .ioctl file operation that took a V4L2 lock. The last drivers are now converted to unlocked_ioctl, so all this old code can now be removed. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
17028cdb |
|
01-Dec-2014 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2 core: improve debug flag handling The old debug field is renamed to dev_debug to ensure that existing drivers (including out-of-tree drivers) that try to use the old name will no longer compile. A comment has also been added that makes it explicit that drivers shouldn't use this field. Additional bits have been added to the debug flag to be more fine-grained when debugging, especially when dealing with streaming ioctls and read, write and poll. You want to enable those explicitly to prevent flooding the log when streaming unless you actually want to do that. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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#
dc3094a7 |
|
19-Jun-2014 |
Ramakrishnan Muthukrishnan <ramakrmu@cisco.com> |
[media] media: v4l2-dev.h: remove V4L2_FL_USE_FH_PRIO flag Since none of the drivers are using it, this flag can be removed. Signed-off-by: Ramakrishnan Muthukrishnan <ramakrmu@cisco.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
d42626bd |
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11-Dec-2013 |
Antti Palosaari <crope@iki.fi> |
[media] v4l: add device type for Software Defined Radio Add new V4L device type VFL_TYPE_SDR for Software Defined Radio. It is registered as /dev/swradio0 (/dev/sdr0 was already reserved). Signed-off-by: Antti Palosaari <crope@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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#
1c1d86a1 |
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12-Jun-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2: always require v4l2_dev, rename parent to dev_parent The last set of drivers still using the parent field of video_device instead of the v4l2_dev field have been converted, so v4l2_dev is now always set. A proper pointer to v4l2_dev is necessary these days otherwise the advanced debugging ioctls will not work when addressing sub-devices. It also ensures that the core can always go from a video_device struct to the top-level v4l2_device struct. There is still one single use case for the parent pointer: if there are multiple busses, each being the parent of one or more video nodes, and if they all share the same v4l2_device struct. In that case one still needs a parent pointer since the v4l2_device struct can only refer to a single parent device. The cx88 driver is one such case. Unfortunately, the cx88 failed to set the parent pointer since 3.6. The next patch will correct this. In order to support this use-case the parent pointer is only renamed to dev_parent, not removed altogether. It has been renamed to ensure that the compiler will catch any (possibly out-of-tree) drivers that were missed during the conversion. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
ca371575 |
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03-Jun-2013 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2: remove deprecated current_norm support completely The use of current_norm to keep track of the current standard has been deprecated for quite some time. Now that all drivers that were using it have been converted to use g_std we can drop it from the core. It was a bad idea to introduce this at the time: since it is a per-device node field it didn't work for drivers that create multiple nodes, all sharing the same tuner (e.g. video and vbi nodes, or a raw video node and a compressed video node). In addition it was very surprising behavior that g_std was implemented in the core. Often drivers implemented both g_std and current_norm, because they didn't understand how it should be used. Since the benefits were very limited (if they were there at all), it is better to just drop it and require that drivers just implement g_std. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
5c77879f |
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05-Sep-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev: add new VFL_DIR_ defines These will be used by v4l2-dev.c to improve ioctl checking. I.e. ioctls for capture should return -ENOTTY when called for an output device. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
cf533735 |
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31-Jul-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev: remove V4L2_FL_LOCK_ALL_FOPS All drivers that needed V4L2_FL_LOCK_ALL_FOPS have been converted, so remove this flag altogether. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
5a5adf6b |
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22-Jun-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev/ioctl.c: add vb2_queue support to video_device This prepares struct video_device for easier integration with vb2. It also introduces a new lock that protects the vb2_queue. It is up to the driver to use it or not. And the driver can associate an owner filehandle with the queue to check whether queuing requests are permitted for the calling filehandle. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
152a3a73 |
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14-May-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev: rename two functions Rename the function v4l2_dont_use_lock to v4l2_disable_ioctl_locking, and rename v4l2_dont_use_cmd to v4l2_disable_ioctl. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
47bd4bc1 |
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14-May-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev.h: add comment not to use V4L2_FL_LOCK_ALL_FOPS in new drivers This flag is for legacy drivers only and will go away in the future. A note regarding commit 5126f2590bee412e3053de851cb07f531e4be36a (v4l2-dev: add flag to have the core lock all file operations): That commit message suggests that by not taking the core lock for fops other than unlocked_ioctl all problems relating to AB-BA locking and mm->mmap_sem are solved. This is not the case. More work needs to be done by moving the core lock further down into video_ioctl2. It should only be taken after the copy_from/to_user calls are done. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
5126f259 |
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10-May-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev: add flag to have the core lock all file operations This used to be the default if the lock pointer was set, but now that lock is by default only used for ioctl serialization. Those drivers that already used core locking have this flag set explicitly, except for some drivers where it was obvious that there was no need to serialize any file operations other than ioctl. The drivers that didn't need this flag were: drivers/media/radio/dsbr100.c drivers/media/radio/radio-isa.c drivers/media/radio/radio-keene.c drivers/media/radio/radio-miropcm20.c drivers/media/radio/radio-mr800.c drivers/media/radio/radio-tea5764.c drivers/media/radio/radio-timb.c drivers/media/video/vivi.c sound/i2c/other/tea575x-tuner.c The other drivers that use core locking and where it was not immediately obvious that this flag wasn't needed were changed so that the flag is set together with a comment that that driver needs work to avoid having to set that flag. This will often involve taking the core lock in the fops themselves. Eventually this flag should go and it should not be used in new drivers. There are a few reasons why we want to avoid core locking of non-ioctl fops: in the case of mmap this can lead to a deadlock in rare situations since when mmap is called the mmap_sem is held and it is possible for other parts of the code to take that lock as well (copy_from_user()/copy_to_user() perform a down_read(&mm->mmap_sem) when a page fault occurs). It is very unlikely that that happens since the core lock serializes all fops, but the kernel warns about it if lock validation is turned on. For poll it is also undesirable to take the core lock as that can introduce increased latency. The same is true for read/write. While it was possible to make flags or something to turn on/off taking the core lock for each file operation, in practice it is much simpler to just not take it at all except for ioctl and leave it to the driver to take the lock. There are only a handful fops compared to the zillion ioctls we have. I also wanted to make it obvious which drivers still take the lock for all fops, so that's why I chose to have drivers set it explicitly. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
48ea0be0 |
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10-May-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev/ioctl: determine the valid ioctls upfront Rather than testing whether an ioctl is implemented in the driver or not every time the ioctl is called, do it upfront when the device is registered. This also allows a driver to disable certain ioctls based on the capabilities of the detected board, something you can't do today without creating separate v4l2_ioctl_ops structs for each new variation. For the most part it is pretty straightforward, but for control ioctls a flag is needed since it is possible that you have per-filehandle controls, and that can't be determined upfront of course. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
8ab75e3e |
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09-May-2012 |
Hans Verkuil <hans.verkuil@cisco.com> |
[media] v4l2-dev: make it possible to skip locking for selected ioctls Using the V4L2 core lock is a very robust method that is usually very good at doing the right thing. But some drivers, particularly USB drivers, may want to prevent the core from taking the lock for specific ioctls, particularly buffer queuing ioctls. The reason is that certain commands like S_CTRL can take a long time to process over USB and all the time the core has the lock, preventing VIDIOC_DQBUF from proceeding, even though a frame may be ready in the queue. This introduces unwanted latency. Since the buffer queuing commands often have their own internal lock it is often not necessary to take the core lock. Drivers can now say that they don't want the core to take the lock for specific ioctls. As it is a specific opt-out it makes it clear to the reviewer that those ioctls will need more care when reviewing. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
b9d0aa6e |
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18-Dec-2011 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
[media] v4l: Add custom compat_ioctl32 operation Drivers implementing custom ioctls need to handle 32-bit/64-bit compatibility themselves. Provide them with a way to do so. To avoid circular module dependencies, merge the v4l2-compat-ioctl32 module into videodev. There is no point in keeping them separate, as the v4l2_compat_ioctl32() function is required by videodev if CONFIG_COMPAT is set anyway. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
6e3ea0e7 |
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02-May-2011 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
[media] v4l: Fix media_entity_to_video_device macro argument name The name 'entity' is used twice in the macro body, once as the macro argument, and once as a structure field name. This breaks compilation if the macro is called with its argument not named 'entity'. Fix this by renaming the macro argument '__e'. This should avoid namespace clashes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
ecc6517d |
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06-May-2011 |
Bob Liu <lliubbo@gmail.com> |
[media] Revert "V4L/DVB: v4l2-dev: remove get_unmapped_area" This reverts commit c29fcff3daafbf46d64a543c1950bbd206ad8c1c. Signed-off-by: Bob Liu <lliubbo@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
b1a873a3 |
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22-Mar-2011 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2: use new flag to enable core priority handling Rather than guess which driver supports core priority handling, require drivers that do to explicitly set the V4L2_FL_USE_FH_PRIO flag in video_device. Updated the core prio handling accordingly and set the flag in the three drivers that do. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
0f62fd6a |
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24-Feb-2011 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2: add v4l2_prio_state to v4l2_device and video_device Integrate the v4l2_prio_state into the core, ready for use. One struct v4l2_prio_state is added to v4l2_device and a pointer to a prio state is added to video_device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
02265493 |
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29-Dec-2010 |
Hans Verkuil <hverkuil@xs4all.nl> |
[media] v4l2_prio: move from v4l2-common to v4l2-dev We are going to move priority handling into the v4l2 core. As a consequence the v4l2_prio helper functions need to be moved into the core videodev module as well to prevent circular dependencies. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
2c0ab67b |
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09-Dec-2009 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
[media] v4l: Make video_device inherit from media_entity V4L2 devices are media entities. As such they need to inherit from (include) the media_entity structure. When registering/unregistering the device, the media entity is automatically registered/unregistered. The entity is acquired on device open and released on device close. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
2096a5dc |
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09-Dec-2009 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
[media] v4l: subdev: Add device node support Create a device node named subdevX for every registered subdev. As the device node is registered before the subdev core::s_config function is called, return -EGAIN on open until initialization completes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vimarsh Zutshi <vimarsh.zutshi@gmail.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
ee6869af |
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26-Sep-2010 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB: v4l2: add core serialization lock Drivers can optionally set a pointer to a mutex in struct video_device. The core will use that to lock before calling open, read, write, unlocked_ioctl, poll, mmap or release. Updated the documentation as well and ensure that v4l2-event knows about the lock: it will unlock it before doing a blocking wait on an event and relock it afterwards. Ensure that the 'video_is_registered' check is done when the lock is held: a typical disconnect will take the lock as well before unregistering the device nodes, so to prevent race conditions the video_is_registered check should also be done with the lock held. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
c29fcff3 |
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26-Sep-2010 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB: v4l2-dev: remove get_unmapped_area The get_unmapped_area file operation is unused. Remove. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
226c0eea |
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05-Aug-2010 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB: videotext: remove this obsolete API Remove the vtx (aka videotext aka teletext) API from the v4l2 core. This API was scheduled for removal in kernel 2.6.35. The vtx device nodes have been superseded by vbi device nodes for many years. No applications exist that use the vtx support. Of the two i2c drivers that actually support this API the saa5249 has been impossible to use for a year now and no known hardware that supports this device exists. The saa5246a is theoretically supported by the old mxb boards, but it never actually worked. In summary: there is no hardware that can use this API and there are no applications actually implementing this API. The vtx support still reserves minors 192-223 and we would really like to reuse those for upcoming new functionality. In the unlikely event that new hardware appears that wants to use the functionality provided by the vtx API, then that functionality should be build around the sliced VBI API instead. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
0996517c |
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01-Aug-2010 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB: v4l2: Add new control handling framework Add a new framework to handle controls which makes life for driver developers much easier. Note that this patch moves some of the control support that used to be in v4l2-common.c to v4l2-ctrls.c. The tables were copied unchanged. The body of v4l2_ctrl_query_fill() was copied to a new v4l2_ctrl_fill() function in v4l2-ctrls.c. This new function doesn't use the v4l2_queryctrl struct anymore, which makes it more general. The remainder of v4l2-ctrls.c is all new. Highlights include: - No need to implement VIDIOC_QUERYCTRL, QUERYMENU, S_CTRL, G_CTRL, S_EXT_CTRLS, G_EXT_CTRLS or TRY_EXT_CTRLS in either bridge drivers or subdevs. New wrapper functions are provided that can just be plugged in. Once everything has been converted these wrapper functions can be removed as well. - When subdevices are added their controls can be automatically merged with the bridge driver's controls. - Most drivers just need to implement s_ctrl to set the controls. The framework handles the locking and tries to be as 'atomic' as possible. - Ready for the subdev device nodes: the same mechanism applies to subdevs and their device nodes as well. Sub-device drivers can make controls local, preventing them from being merged with bridge drivers. - Takes care of backwards compatibility handling of VIDIOC_S_CTRL and VIDIOC_G_CTRL. Handling of V4L2_CID_PRIVATE_BASE is fully transparent. CTRL_CLASS controls are automatically added. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
1babcb46 |
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23-Mar-2010 |
Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> |
V4L/DVB: V4L: File handles This patch adds a list of v4l2_fh structures to every video_device. It allows using file handle related information in V4L2. The event interface is one example of such use. The use of v4l2_fh is not mandatory for drivers. Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
957b4aa9 |
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27-Nov-2009 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
V4L/DVB (13552): v4l: Replace video_is_unregistered with video_is_registered Replace the video_is_unregistered function by a video_is_registered function. The V4L2_FL_UNREGISTERED flag is replaced by a V4L2_FL_REGISTERED flag. This change makes the video_is_registered function return coherent results when called on an initialize but not yet registered video_device instance. The function can now be used instead of checking video_device::minor. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
eac8ea53 |
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27-Nov-2009 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
V4L/DVB (13549): v4l: Add video_device_node_name function Many drivers access the device number (video_device::v4l2_devnode::num) in order to print the video device node name. Add and use a helper function to retrieve the video_device node name. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
6b5270d2 |
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06-Sep-2009 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (12725): v4l: warn when desired devnodenr is in use & add _no_warn function Warn when the desired device node number is already in use, except when the new video_register_device_no_warn function is called since in some use-cases that warning is not relevant. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
7ae0cd9b |
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19-Jun-2009 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (12541): v4l: remove video_register_device_index video_register_device_index is never actually called, instead the stream index number is always calculated automatically. This patch removes this function and simplifies the internal get_index function since that can now always just return the first free index. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
c01f1a5a |
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26-Mar-2009 |
Daniel Glöckner <dg@emlix.com> |
V4L/DVB (11242): allow v4l2 drivers to provide a get_unmapped_area handler Shared memory mappings on nommu machines require a get_unmapped_area file operation that suggests an address for the mapping. This patch adds a way for v4l2 drivers to provide this callback. Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
069b7479 |
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30-Dec-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (10138): v4l2-ioctl: change to long return type to match unlocked_ioctl. Since internal to v4l2 the ioctl prototype is the same regardless of it being called through .ioctl or .unlocked_ioctl, we need to convert it all to the long return type of unlocked_ioctl. Thanks to Jean-Francois Moine for posting an initial patch for this and thus bringing it to our attention. Cc: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
bec43661 |
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30-Dec-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (10135): v4l2: introduce v4l2_file_operations. Introduce a struct v4l2_file_operations for v4l2 drivers. Remove the unnecessary inode argument. Move compat32 handling (and llseek) into the v4l2-dev core: this is now handled in the v4l2 core and no longer in the drivers themselves. Note that this changeset reverts an earlier patch that changed the return type of__video_ioctl2 from int to long. This change will be reinstated later in a much improved version. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
9bea3514 |
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23-Dec-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (9974): v4l2-dev: allow drivers to pass v4l2_device as parent Drivers that use v4l2_device can set that as parent pointer in the v4l2_dev field instead of using the struct device parent field. This allows v4l2-dev.c to check whether this driver is v4l2_device based, and if so then it can offer additional services. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
dc93a70c |
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19-Dec-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (9973): v4l2-dev: use the release callback from device instead of cdev Instead of relying on the cdev release callback we should rely on the release callback from the device struct. This requires that we use get_device/put_device to do proper refcounting. In order to do this safely v4l2-dev.c now sets up its own file_operations that call out to the driver's ops. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
dd89601d |
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04-Oct-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (9133): v4l: disconnect kernel number from minor The v4l core creates four different video devices (video, vbi, radio, vtx) and each has its own range of minor numbers. However, modern devices keep increasing the number of devices that they need so a maximum of 64 video devices will not be enough in the future. In addition this scheme makes it very hard to add new device types. This patch disconnects the kernel number allocation (e.g. video0, video1, etc.) from the actual minor number (just pick the first free minor). This allows for much more flexibility in the future. However, it does require the use of udev. For those who cannot use udev a new CONFIG option was created that changes the allocation scheme back to the old behavior. Thanks to Greg KH for suggesting this approach during the 2008 LPC. In addition, several bugs were fixed in the ivtv and cx18 drivers: these drivers try to allocate specific kernel numbers but that scheme contained a bug which caused what should have been e.g. video17 to appear as e.g. video2. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
7f8ecfab |
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29-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8852): v4l2: use register_chrdev_region instead of register_chrdev Replace the old register_chrdev with the more flexible register_chrdev_region. Ensure that the release() is called when the very last chardev usage was released, and not when the sysfs devices were removed. This should simplify hotpluggable drivers considerably. Tested-by: Mike Isely <isely@isely.net> Tested-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: David Ellingsworth <david@identd.dyndns.org> Reviewed-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
bfa8a273 |
|
23-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8787): v4l2-dev: cleanups and add video_drvdata helper function Cleanup v4l2-dev.[ch], add/improve comments and add a new helper function: video_drvdata() that can get the private driver data from a file struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
|
#
601e9444 |
|
23-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8786): v4l2: remove the priv field, use dev_get_drvdata instead Remove the priv field and let video_get/set_drvdata use dev_get_drvdata and dev_set_drvdata instead. Convert all drivers that still used priv directly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
e138c592 |
|
23-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8785): v4l2: add __must_check to v4l2_dev.h Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
|
#
f9e86b5e |
|
23-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8782): v4l2-dev: add video_device_release_empty Add a second release function: video_device_release_empty It can be used by drivers that have statically allocated video_device structs. Its use usually, but not always, indicates laziness on the part of the driver programmer. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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#
cb353588 |
|
23-Aug-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8781): v4l2-dev: remove obsolete video_exclusive_open/release Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
|
#
de1e575d |
|
26-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8525): fix a few assorted spelling mistakes. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
0ea6bc8d |
|
26-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8523): v4l2-dev: remove unused type and type2 field from video_device The type and type2 fields were unused and so could be removed. Instead add a vfl_type field that contains the type of the video device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
f894dfd7 |
|
25-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8488): videodev: remove some CONFIG_VIDEO_V4L1_COMPAT code from v4l2-dev.h The video_device_create_file and video_device_remove_file functions can be removed from v4l2-dev.h, removing the dependency on videodev.h in v4l2-dev.h. Also removed a few more videodev.h includes that should have been videodev2.h. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
9c39d7ea |
|
21-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8483): Remove obsolete owner field from video_device struct. According to an old comment this should have been removed in 2.6.15. Better late than never... Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
a399810c |
|
20-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8482): videodev: move all ioctl callbacks to a new v4l2_ioctl_ops struct All ioctl callbacks are now stored in a new v4l2_ioctl_ops struct. Drivers fill in a const struct v4l2_ioctl_ops and video_device just contains a const pointer to it. This ensures a clean separation between the const ops struct and the non-const video_device struct. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
35ea11ff |
|
20-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8430): videodev: move some functions from v4l2-dev.h to v4l2-common.h or v4l2-ioctl.h The functions in a header should not belong to another module. The prio functions belong to v4l2-common.c, so move them to v4l2-common.h. The ioctl functions belong to v4l2-ioctl.c, so create a new v4l2-ioctl.h header and move those functions to it. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
22a04f10 |
|
20-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8429): videodev: renamed 'class_dev' to 'dev' The class_dev field is a normal device, not a class device. This is very confusing and now that the old 'dev' field has been renamed to 'parent' we can rename 'class_dev' to just 'dev'. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
5e85e732 |
|
20-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8428): videodev: rename 'dev' to 'parent' The field 'dev' is not the video device, but the parent of the video device. Rename accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
2bc93aa3 |
|
17-Jul-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8387): Some cosmetic changes Those changes, together with some proper patches, will allow out-of-tree compilation for for kernels < 2.6.19 Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
21575c13 |
|
22-Jun-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8103): videodev: fix/improve ioctl debugging Various ioctl debugging fixes and improvements: - use %x rather than %d for control IDs and bitmask fields - make two arrays const - show the whole control array for the ext_ctrl ioctls - print pix_fmt for V4L2_BUF_TYPE_VIDEO_OUTPUT - show full type name rather than an integer - fix CROPCAP debugging - fix G/S_TUNER debugging - show error code in case of an error - other small cleanups Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
539a7555 |
|
20-Jun-2008 |
brandon@ifup.org <brandon@ifup.org> |
V4L/DVB (8078): Introduce "index" attribute for persistent video4linux device nodes A number of V4L drivers have a mod param to specify their preferred minors. This is because it is often desirable for applications to have a static /dev name for a particular device. However, using minors has several disadvantages: 1) the requested minor may already be taken 2) using a mod param is driver specific 3) it requires every driver to add a param 4) requires configuration by hand This patch introduces an "index" attribute that when combined with udev rules can create static device paths like this: /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video0 /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video1 /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video2 $ ls -la /dev/v4l/by-path/pci-0000\:00\:1d.2-usb-0\:1\:1.0-video0 lrwxrwxrwx 1 root root 12 2008-04-28 00:02 /dev/v4l/by-path/pci-0000:00:1d.2-usb-0:1:1.0-video0 -> ../../video1 These paths are steady across reboots and should be resistant to rearranging across Kernel versions. video_register_device_index is available to drivers to request a specific index number. Signed-off-by: Brandon Philips <bphilips@suse.de> Signed-off-by: Kees Cook <kees@outflux.net> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
78b526a4 |
|
27-May-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (7949): videodev: renamed the vidioc_*_fmt_* callbacks The naming for the callbacks that handle the VIDIOC_ENUM_FMT and VIDIOC_S/G/TRY_FMT ioctls was very confusing. Renamed it to match the v4l2_buf_type name. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
0e3bd2b9 |
|
27-May-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (7948): videodev: add missing vidioc_try_fmt_sliced_vbi_output and VIDIOC_ENUMOUTPUT handling There was no vidioc_try_fmt_sliced_vbi_output, instead vidioc_try_fmt_vbi_output was reused. The VIDIOC_ENUMOUTPUT handling was missing altogether, even though the callback existed. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
b2de2313 |
|
28-May-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (7947): videodev: add vidioc_g_std callback. The default videodev behavior for VIDIOC_G_STD is not correct for all devices. Add a new callback that drivers can use instead. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
1d0ba5f3 |
|
26-May-2008 |
Tobias Lorenz <tobias.lorenz@gmx.net> |
V4L/DVB (7942): Hardware frequency seek ioctl interface Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
7fa8e6fa |
|
21-Jun-2008 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (8092): videodev: simplify and fix standard enumeration VIDIOC_ENUMSTD did not return all the PAL/SECAM/NTSC variants: it just returned one single PAL/SECAM/NTSC standard without separate entries for the trickier standards like NTSC-JP. Changed the code so that it behaves better. Also simplified the if/switch statements into a common standards lookup table. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
70345fbe |
|
22-May-2008 |
Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
V4L/DVB (7911): Remove v4l2_video_std_fps prototype declaration The v4l2_video_std_fps function has been removed by Adrian Bunk in 2004 but then its prototype re-appeared in include/media/v4l2-dev.h. Remove it. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
130ca945 |
|
09-Apr-2008 |
Douglas Schilling Landgraf <dougsland@gmail.com> |
V4L/DVB (7665): videodev: Add default vidioc handler Added default vidioc handler for other private ioctls Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
057596ee |
|
02-Feb-2008 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (7133): Fix Kconfig dependencies As pointed by Adrian Bunk, with I2C=m and VIDEO_DEV=y, videodev brokes. This patch moves the functions that videodev needs from v4l2-common. It also fixes some Kconfig changes. After this patch, I2C=m / VIDEO_DEV=y will make v4l2 core statically linked into kernel. v4l2-common will be m, and all V4L drivers will also be m. This approach is very conservative, since it is possible to have V4L drivers that don't need I2C or v4l2-common. The better is to map what drivers really need v4l2-common, making them to select v4l2-common, and allowing the others to be 'y', 'm' and 'n'. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
3bcc9576 |
|
11-Oct-2007 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (6321): Remove obsolete VIDIOC_S/G_MPEGCOMP ioctls Remove the obsolete VIDIOC_G_MPEGCOMP and VIDIOC_S_MPEGCOMP ioctls from the V4L2 API as per the removal schedule (October 2007). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
22c4a4e9 |
|
14-Oct-2007 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (6320): v4l core: remove the unused .hardware V4L1 field struct video_device used to define a .hardware field. While initialized on severl drivers, this field is never used inside V4L. However, drivers using it need to include the old V4L1 header. This seems to cause compilation troubles with some random configs. Better just to remove it from all drivers. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
54bd5b66 |
|
08-Oct-2007 |
Kay Sievers <kay.sievers@vrfy.org> |
V4L/DVB (6293): V4L: convert struct class_device to struct device The currently used "struct class_device" will be removed from the kernel. Here is a patch that converts all users in drivers/media/video/ to struct device. Reviewed-by: Thierry Merle <thierry.merle@free.fr> Reviewed-by: Mike Isely <isely@pobox.com> Reviewed-by: Luca Risolia <luca.risolia@studio.unibo.it> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
59a00adb |
|
23-Jul-2007 |
Jesper Juhl <jesper.juhl@gmail.com> |
V4L/DVB (5913): Clean up duplicate includes in include/media/ This patch cleans up duplicate includes in include/media/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
e90ff923 |
|
13-Sep-2007 |
Linus Torvalds <torvalds@linux-foundation.org> |
V4L/DVB (6220a): fix build error for et61x251 driver Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
3434eb7e |
|
26-Apr-2007 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENT VIDIOC_G_CHIP_IDENT improves debugging of card problems: it can be used to detect which chips are on the board and based on that information selected register dumps can be made, making it easy to debug complicated media chips containing tens or hundreds of registers. This ioctl replaces the internal VIDIOC_INT_G_CHIP_IDENT ioctl. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
b2787845 |
|
26-Apr-2007 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (5289): Add support for video output overlays. Add V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY support. Also add support for local and global alpha overlays. Add new field enums V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT. These changes are needed to support the ivtv On Screen Display features. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
ada6ecd2 |
|
18-Feb-2007 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (5271): Add VIDIOC_TRY_ENCODER_CMD and VIDIOC_ENCODER_CMD ioctls. Add support for starting, stopping, pausing and resuming an MPEG (or similar compressed stream) encoder. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
db6eb5b3 |
|
18-Feb-2007 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (5270): Add VIDIOC_G_ENC_INDEX ioctl The VIDIOC_G_ENC_INDEX ioctl can obtain the MPEG index from an MPEG encoder. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
52ebc763 |
|
23-Jan-2007 |
Trent Piepho <xyzzy@speakeasy.org> |
V4L/DVB (5146): Make VIDIOC_INT_[SG]_REGISTER ioctls no longer internal only The direct register access ioctls were defined as kernel internal only, but they are very useful for debugging hardware from userspace and are used as such. Officially export them. VIDIOC_INT_[SG]_REGISTER is renamed to VIDIOC_DBG_[SG]_REGISTER Definition of ioctl and struct v4l2_register is moved from v4l2-common.h to videodev2.h. Types used in struct v4l2_register are changed to the userspace exportable versions (u32 -> __u32, etc). Use of VIDIOC_DBG_S_REGISTER requires CAP_SYS_ADMIN permission, so move the check into the video_ioctl2() dispatcher so it doesn't need to be duplicated in each driver's call-back function. CAP_SYS_ADMIN check is added to pvrusb2 (which doesn't use video_ioctl2). Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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#
dbbff48f |
|
22-Jan-2007 |
Trent Piepho <xyzzy@speakeasy.org> |
V4L/DVB (5144): Restore VIDIOC_INT_[SG]_REGISTER calls Add support for these ioctls to the video_ioctl2 system and the cx88 driver. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
e75f9cee |
|
20-Nov-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4861): Remove the need of a STD array for drivers using video_ioctl2 video_ioctl2 will auto-generate standard entries at ENUM_FMT. Also, now, a driver may return a subset of the video array at the return, to be stored as the current_norm. For example, a driver may ask for V4L2_STD_PAL. At return, driver may change it to V4L2_STD_PAL_B. This way, a futher call to G_STD will return the exact detected video std. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
38ee04f0 |
|
08-Aug-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4348): Fix: compile for radio aimslab and aztech with V4L2 only All radio devices use an obsolete mode of opening/release driver. Since this is not V4L1 core, better to keep the method available for more time than to rewrite open/release without a radio device to test, since the newer method is much more complex than the previous one (although providing support for multiple opens and multiple devices). Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
8a6914ab |
|
14-Aug-2006 |
Andrew Morton <akpm@osdl.org> |
v4l-dev2: handle __must_check We get hundreds of these: include/media/v4l2-dev.h:348: warning: ignoring return value of 'class_device_create_file', declared with attribute warn_unused_result Handle it, and propagate the __must_check back a level. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
#
8a905162 |
|
09-Sep-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4605): Fixes an issue with V4L1 and make headers-install V4L1 support should be disabled when no CONFIG_VIDEO_V4L1_COMPAT is defined, to allow checking for broken V4L2 ports. This is very important during the migration phase for V4L2 API. However, userspace apps should be capable of using both APIs, since they need to test at runtime, via VIDIOCGCAP ioctl, if V4L1 is supported. So, when __KERNEL__ is not defined, those ioctls and corresponding structs should be visible. This patch also removes the obsolete defines HAVE_V4L1 and HAVE_V4L2, that where causing some confusion, and were replaced by CONFIG_VIDEO_V4L1_COMPAT and CONFIG_VIDEO_V4L2. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
487206f2 |
|
08-Aug-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4340): Videodev.h should be included also when V4L1_COMPAT is selected. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
3117beec |
|
19-Jul-2006 |
Michael Krufky <mkrufky@linuxtv.org> |
V4L/DVB (4316): Check __must_check warnings Check __must_check warnings for class_device_register and class_device_create_file video_device_create_file was declared as a void, but instead should return the int value of class_device_create_file. Move the check from bttv-driver.c into v4l2-dev.h, because all other callers of video_device_create_file must also be checked. Replace the call to class_device_create_file in videodev.c with video_device_create_file, as defined in v4l2-dev.h, so that the return value of class_device_create_file will be checked. Check the return value of class_device_register in videodev.c and pvrusb2-sysfs.c Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
5e483075 |
|
20-Jun-2005 |
Greg Kroah-Hartman <gregkh@suse.de> |
[PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed Also fixes all drivers that set this field. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
#
05976914 |
|
18-Jun-2006 |
Hans Verkuil <hverkuil@xs4all.nl> |
V4L/DVB (4189): Add videodev support for VIDIOC_S/G/TRY_EXT_CTRLS. videodev.c copies the control list specified in struct v4l2_ext_controls to kernel space. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
5e87efa3 |
|
05-Jun-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4068): Removed all references to kernel stuff from videodev.h and videodev2.h The videodev.h and videodev2.h describe the public API for V4L and V4L2. It shouldn't have there any kernel-specific stuff. Those were moved to v4l2-dev.h. This patch removes some uneeded headers and include v4l2-common.h on all V4L driver. This header includes device implementation of V4L2 API provided on v4l2-dev.h as well as V4L2 internal ioctls that provides connections between master driver and its i2c devices. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
|
#
401998fa |
|
04-Jun-2006 |
Mauro Carvalho Chehab <mchehab@kernel.org> |
V4L/DVB (4065): Several improvements at videodev.c Videodev now is capable of better handling V4L2 api, by processing V4L2 ioctls and using callbacks to the driver. The drivers should be migrated to the newer way and the older one will be obsoleted soon. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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