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path: root/drivers/media/v4l2-core/v4l2-dev.c
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2018-12-14media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUTSakari Ailus1-4/+8
The V4L2_BUF_TYPE_META_OUTPUT mirrors the V4L2_BUF_TYPE_META_CAPTURE with the exception that it is an OUTPUT type. The use case for this is to pass buffers to the device that are not image data but metadata. The formats, just as the metadata capture formats, are typically device specific and highly structured. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Tested-by: Tian Shu Qiu <tian.shu.qiu@intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-20media: vidioc_cropcap -> vidioc_g_pixelaspectHans Verkuil1-3/+3
Now vidioc_cropcap is only used to return the pixelaspect, so rename it accordingly. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-20media: v4l2-ioctl: remove unused vidioc_g/s_cropHans Verkuil1-2/+2
Now that all drivers have dropped vidioc_g/s_crop we can remove support for them in the V4L2 core. 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>
2018-08-31media: v4l2-dev: lock req_queue_mutexHans Verkuil1-2/+16
We need to serialize streamon/off with queueing new requests. These ioctls may trigger the cancellation of a streaming operation, and that should not be mixed with queuing a new request at the same time. Finally close() needs this lock since that too can trigger the cancellation of a streaming operation. We take the req_queue_mutex here before any other locks since it is a very high-level lock. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-04media: add helpers for memory-to-memory media controllerEzequiel Garcia1-5/+8
A memory-to-memory pipeline device consists in three entities: two DMA engine and one video processing entities. The DMA engine entities are linked to a V4L interface. This commit add a new v4l2_m2m_{un}register_media_controller API to register this topology. For instance, a typical mem2mem device topology would look like this: Device topology - entity 1: source (1 pad, 1 link) type Node subtype V4L flags 0 pad0: Source -> "proc":1 [ENABLED,IMMUTABLE] - entity 3: proc (2 pads, 2 links) type Node subtype Unknown flags 0 pad0: Source -> "sink":0 [ENABLED,IMMUTABLE] pad1: Sink <- "source":0 [ENABLED,IMMUTABLE] - entity 6: sink (1 pad, 1 link) type Node subtype V4L flags 0 pad0: Sink <- "proc":0 [ENABLED,IMMUTABLE] [hans.verkuil@cisco.com: mark interface links as IMMUTABLE] Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-04media: mark entity-intf links as IMMUTABLEHans Verkuil1-1/+2
Currently links between entities and an interface are just marked as ENABLED. But (at least today) these links cannot be disabled by userspace or the driver, so they should also be marked as IMMUTABLE. It might become possible that drivers can disable such links (if for some reason the device node cannot be used), so we might need to add a new link flag at some point to mark interface links that can be changed by the driver but not by userspace. 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>
2018-05-28media: v4l2-core: push taking ioctl mutex down to ioctl handlerHans Verkuil1-6/+0
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>
2018-05-10Merge tag 'v4.17-rc4' into patchworkMauro Carvalho Chehab1-2/+2
Linux 4.17-rc4 * tag 'v4.17-rc4': (920 commits) Linux 4.17-rc4 KVM: x86: remove APIC Timer periodic/oneshot spikes genksyms: fix typo in parse.tab.{c,h} generation rules kbuild: replace hardcoded bison in cmd_bison_h with $(YACC) gcc-plugins: fix build condition of SANCOV plugin MAINTAINERS: Update Kbuild entry with a few paths Revert "usb: host: ehci: Use dma_pool_zalloc()" platform/x86: Kconfig: Fix dell-laptop dependency chain. platform/x86: asus-wireless: Fix NULL pointer dereference arm64: vgic-v2: Fix proxying of cpuif access KVM: arm/arm64: vgic_init: Cleanup reference to process_maintenance KVM: arm64: Fix order of vcpu_write_sys_reg() arguments MAINTAINERS & files: Canonize the e-mails I use at files media: imx-media-csi: Fix inconsistent IS_ERR and PTR_ERR tools: power/acpi, revert to LD = gcc bdi: Fix oops in wb_workfn() RDMA/cma: Do not query GID during QP state transition to RTR IB/mlx4: Fix integer overflow when calculating optimal MTT size IB/hfi1: Fix memory leak in exception path in get_irq_affinity() IB/{hfi1, rdmavt}: Fix memory leak in hfi1_alloc_devdata() upon failure ...
2018-05-09media: v4l2-core: Rename array 'video_driver' to 'video_drivers'Simon Que1-11/+11
Improves code clarity in two ways: 1. The plural name makes it more clear that it is an array. 2. The name of the array is now no longer identical to the struct type name, so it is easier to find in the code. Signed-off-by: Simon Que <sque@chromium.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-04media: v4l2-dev: use pr_foo() for printing messagesMauro Carvalho Chehab1-19/+26
Instead of using printk() directly, use the pr_foo() macros. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-04MAINTAINERS & files: Canonize the e-mails I use at filesMauro Carvalho Chehab1-2/+2
From now on, I'll start using my @kernel.org as my development e-mail. As such, let's remove the entries that point to the old mchehab@s-opensource.com at MAINTAINERS file. For the files written with a copyright with mchehab@s-opensource, let's keep Samsung on their names, using mchehab+samsung@kernel.org, in order to keep pointing to my employer, with sponsors the work. For the files written before I join Samsung (on July, 4 2013), let's just use mchehab@kernel.org. For bug reports, we can simply point to just kernel.org, as this will reach my mchehab+samsung inbox anyway. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Brian Warner <brian.warner@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-04-05media: v4l2-core: fix size of devnode_nums[] bitarrayMauro Carvalho Chehab1-2/+6
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>
2018-02-12vfs: do bulk POLL* -> EPOLL* replacementLinus Torvalds1-1/+1
This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-06Merge tag 'media/v4.16-2' of ↵Linus Torvalds1-4/+6
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - videobuf2 was moved to a media/common dir, as it is now used by the DVB subsystem too - Digital TV core memory mapped support interface - new sensor driver: ov7740 - several improvements at ddbridge driver - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel SoCs - new tuner driver: tda18250 - finally got rid of all LIRC staging drivers - as we don't have old lirc drivers anymore, restruct the lirc device code - add support for UVC metadata - add a new staging driver for NVIDIA Tegra Video Decoder Engine - DVB kAPI headers moved to include/media - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap for non-legacy APIs - reduce the kAPI gap for V4L2 - lots of other driver enhancements, cleanups, etc. * tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits) media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32 media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32 media: v4l2-compat-ioctl32.c: avoid sizeof(type) media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32 media: v4l2-compat-ioctl32.c: fix the indentation media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF media: v4l2-ioctl.c: don't copy back the result for -ENOTTY media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt media: vivid: fix module load error when enabling fb and no_error_inj=1 media: dvb_demux: improve debug messages media: dvb_demux: Better handle discontinuity errors media: cxusb, dib0700: ignore XC2028_I2C_FLUSH media: ts2020: avoid integer overflows on 32 bit machines media: i2c: ov7740: use gpio/consumer.h instead of gpio.h media: entity: Add a nop variant of media_entity_cleanup ...
2017-12-18media: v4l2-dev: convert VFL_TYPE_* into an enumMauro Carvalho Chehab1-4/+6
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>
2017-11-28media: annotate ->poll() instancesAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-28anntotate the places where ->poll() return values goAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-04-15[media] v4l: Add metadata buffer type and formatLaurent Pinchart1-6/+10
The metadata buffer type is used to transfer metadata between userspace and kernelspace through a V4L2 buffers queue. It comes with a new metadata capture capability and format description. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> [hans.verkuil@cisco.com: removed left-over 'experimental' note] [hans.verkuil@cisco.com: add newline after _v4l2-meta-format label] Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-12-24Replace <asm/uaccess.h> with <linux/uaccess.h> globallyLinus Torvalds1-1/+1
This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-23[media] v4l2-core: Add support for touch devicesNick Dyer1-3/+11
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>
2016-07-23[media] doc-rst: document v4l2-dev.hMauro Carvalho Chehab1-34/+0
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>
2016-04-13[media] media: Add obj_type field to struct media_entityLaurent Pinchart1-0/+1
Code that processes media entities can require knowledge of the structure type that embeds a particular media entity instance in order to cast the entity to the proper object type. This needs is shown by the presence of the is_media_entity_v4l2_io and is_media_entity_v4l2_subdev functions. The implementation of those two functions relies on the entity function field, which is both a wrong and an inefficient design, without even mentioning the maintenance issue involved in updating the functions every time a new entity function is added. Fix this by adding add an obj_type field to the media entity structure to carry the information. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-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>
2016-01-11[media] media_entity: remove gfp_flags argumentMauro Carvalho Chehab1-2/+1
We should not be creating device nodes at IRQ contexts. So, the only flags we'll be using will be GFP_KERNEL. Let's remove the gfp_flags, in order to make the interface simpler. If we ever need it, it would be easy to revert those changes. While here, remove an extra blank line. Suggested-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-01-11[media] uapi/media.h: Rename entities types to functionsMauro Carvalho Chehab1-7/+7
Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_ and add the backward compatibility bits. The changes at the .c files was generated by the following coccinelle script: @@ @@ -MEDIA_ENT_T_UNKNOWN +MEDIA_ENT_F_UNKNOWN @@ @@ -MEDIA_ENT_T_DVB_BASE +MEDIA_ENT_F_DVB_BASE @@ @@ -MEDIA_ENT_T_V4L2_BASE +MEDIA_ENT_F_V4L2_BASE @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_BASE +MEDIA_ENT_F_V4L2_SUBDEV_BASE @@ @@ -MEDIA_ENT_T_CONNECTOR_BASE +MEDIA_ENT_F_CONNECTOR_BASE @@ @@ -MEDIA_ENT_T_V4L2_VIDEO +MEDIA_ENT_F_IO_V4L @@ @@ -MEDIA_ENT_T_V4L2_VBI +MEDIA_ENT_F_IO_VBI @@ @@ -MEDIA_ENT_T_V4L2_SWRADIO +MEDIA_ENT_F_IO_SWRADIO @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN +MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN @@ @@ -MEDIA_ENT_T_CONN_RF +MEDIA_ENT_F_CONN_RF @@ @@ -MEDIA_ENT_T_CONN_SVIDEO +MEDIA_ENT_F_CONN_SVIDEO @@ @@ -MEDIA_ENT_T_CONN_COMPOSITE +MEDIA_ENT_F_CONN_COMPOSITE @@ @@ -MEDIA_ENT_T_CONN_TEST +MEDIA_ENT_F_CONN_TEST @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_SENSOR +MEDIA_ENT_F_CAM_SENSOR @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_FLASH +MEDIA_ENT_F_FLASH @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_LENS +MEDIA_ENT_F_LENS @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_DECODER +MEDIA_ENT_F_ATV_DECODER @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_TUNER +MEDIA_ENT_F_TUNER @@ @@ -MEDIA_ENT_T_DVB_DEMOD +MEDIA_ENT_F_DTV_DEMOD @@ @@ -MEDIA_ENT_T_DVB_DEMUX +MEDIA_ENT_F_TS_DEMUX @@ @@ -MEDIA_ENT_T_DVB_TSOUT +MEDIA_ENT_F_IO_DTV @@ @@ -MEDIA_ENT_T_DVB_CA +MEDIA_ENT_F_DTV_CA @@ @@ -MEDIA_ENT_T_DVB_NET_DECAP +MEDIA_ENT_F_DTV_NET_DECAP Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-01-11[media] media-entity.h: rename entity.type to entity.functionMauro Carvalho Chehab1-7/+7
Entities should have one or more functions. Calling it as a type proofed to not be correct, as an entity could eventually have more than one type. So, rename the field as function. Please notice that this patch doesn't extend support for multiple function entities. Such change will happen when we have real case drivers using it. No functional changes. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-01-11[media] v4l2 core: enable all interface links at initMauro Carvalho Chehab1-1/+2
Interface links are normally enabled, meaning that the interfaces are bound to the entities. So, any ioctl send to the interface are reflected at the entities managed by the interface. However, when a device is used, other interfaces for the same hardware could be decoupled from the entities linked to them, because the hardware may have some parts busy. That's for example, what happens when an hybrid TV device is in use. If it is streaming analog TV or capturing signals from S-Video/Composite connectors, typically the digital part of the hardware can't be used and vice-versa. This is generally due to some internal hardware or firmware limitation, that it is not easily mapped via data pipelines. What the Kernel drivers do internally is that they decouple the hardware from the interface. So, all changes, if allowed, are done only at some interface cache, but not physically changed at the hardware. The usage is similar to the usage of the MEDIA_LNK_FL_ENABLED on data links. So, let's use the same flag to indicate if either the interface to entity link is bound/enabled or not. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-01-11[media] v4l2-core: create MC interfaces for devnodesMauro Carvalho Chehab1-18/+93
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>
2016-01-11[media] replace all occurrences of MEDIA_ENT_T_DEVNODE_V4LMauro Carvalho Chehab1-1/+1
Now that interfaces and entities are distinct, it makes no sense of keeping something named as MEDIA_ENT_T_DEVNODE. This change was done with this script: for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DEVNODE_V4L,MEDIA_ENT_T_V4L2_VIDEO, <$i >a && mv a $i; done Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-10-20[media] v4l2: add support for SDR transmitterAntti Palosaari1-2/+12
New IOCTL ops: vidioc_enum_fmt_sdr_out vidioc_g_fmt_sdr_out vidioc_s_fmt_sdr_out vidioc_try_fmt_sdr_out New vb2 buffertype: V4L2_BUF_TYPE_SDR_OUTPUT New v4l2 capability: V4L2_CAP_SDR_OUTPUT Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-03[media] v4l2-dev: disable selection ioctls for non-video devicesHans Verkuil1-8/+8
The selection/cropping ioctls are only valid for video nodes, not for vbi. Found by v4l2-compliance when run on a VBI device node. 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>
2015-03-02[media] v4l2-core: drop g/s_priority opsHans Verkuil1-4/+3
The handling of VIDIOC_G/S_PRIORITY is now entirely done by the V4L2 core, so we can drop the g/s_priority ioctl ops. We do have to make sure though that when S_PRIORITY is called we check that the driver used struct v4l2_fh. This check can be removed once all drivers are converted to that structure. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-02[media] v4l2-core: remove the old .ioctl BKL replacementHans Verkuil1-28/+0
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>
2015-02-14[media] media: Fix DVB devnode representation at media controllerMauro Carvalho Chehab1-2/+2
The previous provision for DVB media controller support were to define an ID (likely meaning the adapter number) for the DVB devnodes. This is just plain wrong. Just like V4L, DVB devices (and any other device node)) are uniquely identified via a (major, minor) tuple. This is enough to uniquely identify a devnode, no matter what API it implements. So, before we go too far, let's mark the old v4l, fb, dvb and alsa "devnode" info as deprecated, and just call it as "dev". We can latter add fields specific to each API if needed. As we don't want to break compilation on already existing apps, let's just keep the old definitions as-is, adding a note that those are deprecated at media-entity.h. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-12-23[media] v4l2 core: improve debug flag handlingHans Verkuil1-13/+15
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>
2014-12-22[media] media: remove emacs editor variablesHans Verkuil1-7/+0
1) This is not allowed by the kernel coding style 2) Just configure your editor correctly 3) It's really ugly 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>
2014-11-25[media] v4l2-dev: vdev->v4l2_dev is always set, so simplify codeHans Verkuil1-20/+14
These days vdev->v4l2_dev must always be set. This means that some old code that still tests for a NULL vdev->v4l2_dev can be removed or simplified. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-07-18[media] v4l2-dev: don't debug poll unless the debug level > 2Hans Verkuil1-1/+1
Some applications poll a lot, so prevent the poll message from flooding the log. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-18[media] v4l2-dev: streamon/off is only a valid ioctl for video, vbi and sdrHans Verkuil1-2/+2
The VIDIOC_STREAMON/OFF ioctls are not valid for radio devices, just like the other streaming I/O ioctls. Add the streamon/off ioctls to the other streaming I/O ioctls. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-17[media] v4l2: integrate support for VIDIOC_QUERY_EXT_CTRLHans Verkuil1-0/+2
Add the v4l2 core plumbing for the new VIDIOC_QUERY_EXT_CTRL ioctl. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-04[media] media: v4l2-core: remove the use of V4L2_FL_USE_FH_PRIO flagRamakrishnan Muthukrishnan1-4/+2
Since all the drivers that use `struct v4l2_fh' use the core priority checking instead of doing it themselves, this flag can be removed. This patch removes the usage of the flag from v4l2-core. 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>
2014-03-11[media] v4l2: add VIDIOC_G/S_EDID support to the v4l2 coreHans Verkuil1-0/+2
Support this ioctl as part of the v4l2 core. Use the new ioctl name and struct v4l2_edid type in the existing core code. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-05[media] v4l: do not allow modulator ioctls for non-radio devicesHans Verkuil1-2/+3
Modulator ioctls could be enabled mistakenly for non-radio devices. Currently those ioctls are only valid for radio. Fix it. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-05[media] v4l: enable some IOCTLs for SDR receiverAntti Palosaari1-3/+18
Enable stream format (FMT) IOCTLs for SDR use. These are used for negotiate used data stream format. Reorganise some some IOCTL selection logic. Signed-off-by: Antti Palosaari <crope@iki.fi> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-05[media] v4l: add device type for Software Defined RadioAntti Palosaari1-0/+6
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>
2014-01-28[media] media: v4l2-dev: fix video device index assignmentMarek Szyprowski1-1/+1
The side effect of commit 1056e4388b045 ("v4l2-dev: Fix race condition on __video_register_device") is the increased number of index value assigned on video_device registration. Before that commit video_devices were numbered from 0, after it, the indexes starts from 1, because get_index() always count the device, which is being registered. Some device drivers rely on video_device index number for internal purposes, i.e. s5p-mfc driver stopped working after that patch. This patch restores the old method of numbering the video_device indexes. Cc: stable@vger.kernel.org # for v3.12 Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Ricardo Ribalda <ricardo.ribalda@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-01-07[media] v4l2: move tracepoints to video_usercopyHans Verkuil1-9/+0
The (d)qbuf ioctls were traced in the low-level v4l2 ioctl function. The trace was outside the serialization lock, so that can affect the usefulness of the timing. In addition, the __user pointer was expected instead of a proper kernel pointer. By moving the tracepoints to video_usercopy we ensure that the trace calls use the correct kernel pointer, and that it happens right after the ioctl call to the driver, so certainly inside the serialization lock. In addition, we only trace if the call was successful. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Wade Farnsworth <wade_farnsworth@mentor.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-12-10[media] v4l2-dev: Add tracepoints for QBUF and DQBUFWade Farnsworth1-0/+9
Add tracepoints to the QBUF and DQBUF ioctls to enable rudimentary performance measurements using standard kernel tracers. [m.chehab@samsung.com: CodingStyle fixes (whitespacing)] Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-09-05Merge branch 'v4l_for_linus' of ↵Linus Torvalds1-3/+2
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: "This series contains: - Exynos s5p-mfc driver got support for VP8 encoder - Some SoC drivers gained support for asynchronous registration (needed for DT) - The RC subsystem gained support for RC activity LED; - New drivers added: a video decoder(adv7842), a video encoder (adv7511), a new GSPCA driver (stk1135) and support for Renesas R-Car (vsp1) - the first SDR kernel driver: mirics msi3101. Due to some troubles with the driver, and because the API is still under discussion, it will be merged at staging for 3.12. Need to rework on it - usual new boards additions, fixes, cleanups and driver improvements" * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (242 commits) [media] cx88: Fix regression: CX88_AUDIO_WM8775 can't be 0 [media] exynos4-is: Fix entity unregistration on error path [media] exynos-gsc: Register v4l2 device [media] exynos4-is: Fix fimc-lite bayer formats [media] em28xx: fix assignment of the eeprom data [media] hdpvr: fix iteration over uninitialized lists in hdpvr_probe() [media] usbtv: Throw corrupted frames away [media] usbtv: Fix deinterlacing [media] v4l2: added missing mutex.h include to v4l2-ctrls.h [media] DocBook: upgrade media_api DocBook version to 4.2 [media] ml86v7667: fix compile warning: 'ret' set but not used [media] s5p-g2d: Fix registration failure [media] media: coda: Fix DT driver data pointer for i.MX27 [media] s5p-mfc: Fix input/output format reporting [media] v4l: vsp1: Fix mutex double lock at streamon time [media] v4l: vsp1: Add support for RT clock [media] v4l: vsp1: Initialize media device bus_info field [media] davinci: vpif_capture: fix error return code in vpif_probe() [media] davinci: vpif_display: fix error return code in vpif_probe() [media] MAINTAINERS: add entries for adv7511 and adv7842 ...
2013-08-24[media] v4l2-dev: Fix race condition on __video_register_deviceRicardo Ribalda1-3/+2
When 2 devices are registered at the same time, in Part 2 both will get the same minor number, making Part6 crash, because it cannot create a create a device with a duplicated minor: [ 7.157648] ------------[ cut here ]------------ [ 7.157666] WARNING: at fs/sysfs/dir.c:530 sysfs_add_one+0xbd/0xe0() [ 7.157669] sysfs: cannot create duplicate filename '/dev/char/81:1' [ 7.157672] Modules linked in: qtec_xform(+) qt5023_video(+) videobuf2_vmalloc videobuf2_dma_sg videobuf2_memops videobuf2_core gpio_xilinx(+) qtec_white qtec_cmosis(+) qtec_pcie qt5023 [ 7.157694] CPU: 0 PID: 120 Comm: systemd-udevd Not tainted 3.10.0-qtec-standard #8 [ 7.157698] Hardware name: QTechnology QT5022/QT5022, BIOS PM_2.1.0.309 X64 05/23/2013 [ 7.157702] 0000000000000009 ffff8801788358e8 ffffffff8176c487 ffff880178835928 [ 7.157707] ffffffff8106f6f0 ffff880175759770 00000000ffffffef ffff880175759930 [ 7.157712] ffff8801788359e8 ffff880178bff000 ffff880175759930 ffff880178835988 [ 7.157718] Call Trace: [ 7.157728] [<ffffffff8176c487>] dump_stack+0x19/0x1b [ 7.157735] [<ffffffff8106f6f0>] warn_slowpath_common+0x70/0xa0 [ 7.157740] [<ffffffff8106f7d6>] warn_slowpath_fmt+0x46/0x50 [ 7.157746] [<ffffffff81324b35>] ? strlcat+0x65/0x90 [ 7.157750] [<ffffffff811d516d>] sysfs_add_one+0xbd/0xe0 [ 7.157755] [<ffffffff811d5c6b>] sysfs_do_create_link_sd+0xdb/0x200 [ 7.157760] [<ffffffff811d5db1>] sysfs_create_link+0x21/0x40 [ 7.157765] [<ffffffff813e277b>] device_add+0x21b/0x6d0 [ 7.157772] [<ffffffff813f2985>] ? pm_runtime_init+0xe5/0xf0 [ 7.157776] [<ffffffff813e2c4e>] device_register+0x1e/0x30 [ 7.157782] [<ffffffff8153e8c3>] __video_register_device+0x313/0x610 [ 7.157791] [<ffffffffa00957c5>] qtec_xform_probe+0x465/0x7a4 [qtec_xform] [ 7.157797] [<ffffffff813e7b13>] platform_drv_probe+0x43/0x80 [ 7.157802] [<ffffffff813e531a>] ? driver_sysfs_add+0x7a/0xb0 [ 7.157807] [<ffffffff813e584b>] driver_probe_device+0x8b/0x3a0 [ 7.157812] [<ffffffff813e5c0b>] __driver_attach+0xab/0xb0 [ 7.157816] [<ffffffff813e5b60>] ? driver_probe_device+0x3a0/0x3a0 [ 7.157820] [<ffffffff813e37fd>] bus_for_each_dev+0x5d/0xa0 [ 7.157825] [<ffffffff813e529e>] driver_attach+0x1e/0x20 [ 7.157829] [<ffffffff813e4d3e>] bus_add_driver+0x10e/0x280 [ 7.157833] [<ffffffffa0099000>] ? 0xffffffffa0098fff [ 7.157837] [<ffffffffa0099000>] ? 0xffffffffa0098fff [ 7.157842] [<ffffffff813e6317>] driver_register+0x77/0x170 [ 7.157848] [<ffffffff81151bcc>] ? __vunmap+0x9c/0x110 [ 7.157852] [<ffffffffa0099000>] ? 0xffffffffa0098fff [ 7.157857] [<ffffffff813e7236>] platform_driver_register+0x46/0x50 [ 7.157863] [<ffffffffa0099010>] qtec_xform_plat_driver_init+0x10/0x12 [qtec_xform] [ 7.157869] [<ffffffff810002ea>] do_one_initcall+0xea/0x1a0 [ 7.157875] [<ffffffff810cf1f1>] load_module+0x1a91/0x2630 [ 7.157880] [<ffffffff8133bee0>] ? ddebug_proc_show+0xe0/0xe0 [ 7.157887] [<ffffffff817760f2>] ? page_fault+0x22/0x30 [ 7.157892] [<ffffffff810cfe7a>] SyS_init_module+0xea/0x140 [ 7.157898] [<ffffffff8177e5b9>] tracesys+0xd0/0xd5 [ 7.157902] ---[ end trace 660cc3a65a4bf01b ]--- [ 7.157939] __video_register_device: device_register failed Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-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>
2013-08-20v4l2: convert class code to use dev_groupsGreg Kroah-Hartman1-13/+17
The dev_attrs field of struct class is going away soon, dev_groups should be used instead. This converts the v4l2 class code to use the correct field. Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 08:14:34 +0300