- 31 Oct, 2017 40 commits
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Sakari Ailus authored
Refactor the V4L2 async framework a little in preparation for async sub-device notifiers. This avoids making some structural changes in the patch actually implementing sub-device notifiers, making that patch easier to review. Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by:
Hans Verkuil <hans.verkuil@cisco.com> Acked-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by:
Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by:
Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Sakari Ailus authored
The information on how many async sub-devices would be bindable to a notifier is typically dependent on information from platform firmware and it's not driver's business to be aware of that. Many V4L2 main drivers are perfectly usable (and useful) without async sub-devices and so if there aren't any around, just proceed call the notifier's complete callback immediately without registering the notifier itself. If a driver needs to check whether there are async sub-devices available, it can be done by inspecting the notifier's num_subdevs field which tells the number of async sub-devices. Signed-off-by:
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Sakari Ailus authored
Register the sub-device before calling the notifier's bound callback. Doing this the other way around is problematic as the struct v4l2_device has not assigned for the sub-device yet and may be required by the bound callback. Signed-off-by:
Pavel Machek <pavel@ucw.cz> Acked-by:
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Sakari Ailus authored
Add three helper functions to call async operations callbacks. Besides simplifying callbacks, this allows async notifiers to have no ops set, i.e. it can be left NULL. Signed-off-by:
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Laurent Pinchart authored
The async subdev notifier .bound(), .unbind() and .complete() operations are function pointers stored directly in the v4l2_async_subdev structure. As the structure isn't immutable, this creates a potential security risk as the function pointers are mutable. To fix this, move the function pointers to a new v4l2_async_subdev_operations structure that can be made const in drivers. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
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Sakari Ailus authored
If no source pads are found in an entity, print the name of the entity. Signed-off-by:
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Sakari Ailus authored
We only want to link sub-devices that were bound to the async notifier the isp driver registered but there may be other sub-devices in the v4l2_device as well. Check for the correct async notifier. Signed-off-by:
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Sakari Ailus authored
Instead of using a custom driver implementation, use v4l2_async_notifier_parse_fwnode_endpoints() to parse the fwnode endpoints of the device. Signed-off-by:
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Sakari Ailus authored
Instead of using a custom driver implementation, use v4l2_async_notifier_parse_fwnode_endpoints() to parse the fwnode endpoints of the device. Signed-off-by:
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Sakari Ailus authored
Add two functions for parsing devices graph endpoints: v4l2_async_notifier_parse_fwnode_endpoints and v4l2_async_notifier_parse_fwnode_endpoints_by_port. The former iterates over all endpoints whereas the latter only iterates over the endpoints in a given port. The former is mostly useful for existing drivers that currently implement the iteration over all the endpoints themselves whereas the latter is especially intended for devices with both sinks and sources: async sub-devices for external devices connected to the device's sources will have already been set up, or the external sub-devices are part of the master device. Depends-on: ("device property: preserve usecount for node passed to of_fwnode_graph_get_port_parent()") Signed-off-by: -
Sakari Ailus authored
The V4L2 async wasn't part of the documentation build. Fix this. Signed-off-by:
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Sakari Ailus authored
Rename internal functions to make the names of the functions better describe what they do. Old name New name v4l2_async_test_notify v4l2_async_match_notify v4l2_async_belongs v4l2_async_find_match Signed-off-by:
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Sakari Ailus authored
The check whether an async sub-device is bound to a notifier was performed without list_lock held, making it possible for another process to unbind the async sub-device before the sub-device unregistration function proceeds to take the lock. Fix this by first acquiring the lock and then proceeding with the check. Signed-off-by:
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Sakari Ailus authored
The notifier complete callback may return an error. This error code was simply returned to the caller but never handled properly. Move calling the complete callback function to the caller from v4l2_async_test_notify and undo the work that was done either in async sub-device or async notifier registration. Reported-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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Niklas Söderlund authored
The call to v4l2_async_cleanup() will set sd->asd to NULL so passing it to notifier->unbind() has no effect and leaves the notifier confused. Call the unbind() callback prior to cleaning up the subdevice to avoid this. Signed-off-by:
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Sakari Ailus authored
v4l2_async_cleanup() is called when the async sub-device is unbound from the media device. As the pointer is set by the driver registering the async sub-device, leave the pointer as set by the driver. Signed-off-by:
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Sakari Ailus authored
Remove V4L2 async re-probing support. The re-probing support has been there to support cases where the sub-devices require resources provided by the main driver's hardware to function, such as clocks. Reprobing has allowed unbinding and again binding the main driver without explicitly unbinding the sub-device drivers. This is certainly not a common need, and the responsibility will be the user's going forward. An alternative could have been to introduce notifier specific locks. Considering the complexity of the re-probing and that it isn't really a solution to a problem but a workaround, remove re-probing instead. If there is a need to support the clock provider unregister/register cycle while keeping the clock references in the consumers in the future, this should be implemented in the clock framework instead, not in V4L2. Signed-off-by:
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Akinobu Mita authored
The test_pattern_menu[] array has two valid items and a null terminated item. So the control's maximum value which is passed to v4l2_ctrl_new_std_menu_items() should be one. However, 'ARRAY_SIZE(test_pattern_menu) - 1' is actually passed and it's not correct. Fix it by removing unnecessary terminated entry and let the correct control's maximum value be passed to v4l2_ctrl_new_std_menu_items(). Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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Akinobu Mita authored
The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the subdev->flags. But this driver overwrites subdev->flags immediately after calling v4l2_i2c_subdev_init(). So V4L2_SUBDEV_FL_IS_I2C is not set after all. This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C. Side note: According to the comment in v4l2_device_unregister(), this is problematic only if the device is platform bus device. Device tree or ACPI based devices are not affected. Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
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Akinobu Mita authored
The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the subdev->flags. But this driver overwrites subdev->flags immediately after calling v4l2_i2c_subdev_init(). So V4L2_SUBDEV_FL_IS_I2C is not set after all. This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C. Side note: According to the comment in v4l2_device_unregister(), this is problematic only if the device is platform bus device. Device tree or ACPI based devices are not affected. Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
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Akinobu Mita authored
The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the subdev->flags. But this driver overwrites subdev->flags immediately after calling v4l2_i2c_subdev_init(). So V4L2_SUBDEV_FL_IS_I2C is not set after all. This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C. Side note: According to the comment in v4l2_device_unregister(), this is problematic only if the device is platform bus device. Device tree or ACPI based devices are not affected. Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com> Signed-off-by:
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Akinobu Mita authored
The v4l2_i2c_subdev_init() sets V4L2_SUBDEV_FL_IS_I2C flag in the subdev->flags. But this driver overwrites subdev->flags immediately after calling v4l2_i2c_subdev_init(). So V4L2_SUBDEV_FL_IS_I2C is not set after all. This stops breaking subdev->flags and preserves V4L2_SUBDEV_FL_IS_I2C. Side note: According to the comment in v4l2_device_unregister(), this is problematic only if the device is platform bus device. Device tree or ACPI based devices are not affected. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
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Gustavo A. R. Silva authored
Make use of the swap macro and remove unnecessary variable tmp_frame. This makes the code easier to read and maintain. This code was detected with the help of Coccinelle. Signed-off-by:
Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by:
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Wenyou Yang authored
Fix the clock ID to do the runtime pm should be ISC_ISPCK, instead of ISC_MCK in clk_prepare(), clk_unprepare() and isc_clk_is_enabled(). Signed-off-by:
Wenyou Yang <wenyou.yang@microchip.com> Signed-off-by:
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Colin Ian King authored
Pointer pix is being initialized to a value and a little later being assigned the same value again. Remove the initial assignment to avoid a duplicate assignment. Cleans up the clang warning: drivers/media/platform/sti/bdisp/bdisp-v4l2.c:726:26: warning: Value stored to 'pix' during its initialization is never read Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Colin Ian King authored
Variable j is being set to zero before a loop and also immediately inside the loop and is not used after the loop. Hence the first assignment is redundant and can be removed. Cleans up clang warning: drivers/media/usb/gspca/gspca.c:1078:2: warning: Value stored to 'j' is never read Signed-off-by:
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Colin Ian King authored
Variable index is set to zero and then set to zero again a few lines later in a for loop initialization. Remove the redundant setting of index to zero. Cleans up the clang warning: drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:519:3: warning: Value stored to 'index' is never read Signed-off-by:
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Hans Verkuil authored
Drop unused vb1 header. Signed-off-by:
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Colin Ian King authored
Variable freq is initialized to f->frequency however this value is never read and freq is later updated; hence the initialization is redundant and can be removed. Cleans up clang warning: drivers/media/radio/radio-raremono.c:257:6: warning: Value stored to 'freq' during its initialization is never read Signed-off-by:
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Adam Sampson authored
Because the brightness and contrast controls share a register, usbtv_s_ctrl needs to read the existing values for both controls before inserting the new value. However, the code accidentally wrote to the registers (from an uninitialised stack array), rather than reading them. The user-visible effect of this was that adjusting the brightness would also set the contrast to a random value, and vice versa -- so it wasn't possible to correctly adjust the brightness of usbtv's video output. Tested with an "EasyDAY" UTV007 device. Fixes: c53a846c ("usbtv: add video controls") Signed-off-by:
Adam Sampson <ats@offog.org> Reviewed-by:
Lubomir Rintel <lkundrak@v3.sk> Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Bhumika Goyal <bhumirks@gmail.com> Cc: Mike Isely <isely@pobox.com> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Hans Verkuil <hverkuil@xs4all.nl> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Kees Cook authored
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Andy Walls <awalls@md.metrocast.net> Cc: Sergey Kozlov <serjk@netup.ru> Cc: Abylay Ospan <aospan@netup.ru> Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Cc: Geliang Tang <geliangtang@gmail.com> Cc: Sean Young <sean@mess.org> Cc: "Pali Rohár" <pali.rohar@gmail.com> Signed-off-by:
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Hans Verkuil authored
The probe() cleanup code ('goto foo_error') was very messy. It appears that this code wasn't updated when I switched to the devm_ functions in an earlier version. Update the code to use 'return error' where it can and do proper cleanup where it needs to. Note that the original code wasn't buggy, it was just messy. Signed-off-by: -
Jaejoong Kim authored
usb_endpoint_maxp() has an inline keyword and searches for bits[10:0] by & operation with 0x7ff. So, we can remove the duplicate & operation with 0x7ff. Signed-off-by:
Jaejoong Kim <climbbb.kim@gmail.com> Signed-off-by:
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Arnd Bergmann authored
The newly added driver has incorrect #ifdef annotations on its PM functions, leading to a harmless compile-time warning when CONFIG_PM is disabled: drivers/media/platform/rockchip/rga/rga.c:760:13: error: 'rga_disable_clocks' defined but not used [-Werror=unused-function] static void rga_disable_clocks(struct rockchip_rga *rga) ^~~~~~~~~~~~~~~~~~ drivers/media/platform/rockchip/rga/rga.c:728:12: error: 'rga_enable_clocks' defined but not used [-Werror=unused-function] This removes the #ifdef and marks the functions as __maybe_unused, so gcc can silently drop all the unused code. Fixes: f7e7b48e ("[media] rockchip/rga: v4l2 m2m support") Signed-off-by:Arnd Bergmann <arnd@arndb.de> Acked-by:
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Hans Verkuil authored
cec_allocate_adapter never returns NULL, so just use IS_ERR instead of PTR_ERR_OR_ZERO. Signed-off-by:
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Ricardo Ribalda authored
VIDIOC_DQEVENT and VIDIOC_QUERY_EXT_CTRL should give the same output for the control flags field. This patch creates a new function user_flags(), that calculates the user exported flags value (which is different than the kernel internal flags structure). This function is then used by all the code that exports the internal flags to userspace. Reported-by:
Dimitrios Katsaros <patcherwork@gmail.com> Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
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Bhumika Goyal authored
Make these structures const as they are only getting passed to the functions vpfe_{register/unregister}_ccdc_device having the argument as const. Structures found using Coccinelle and changes done by hand. Signed-off-by:Bhumika Goyal <bhumirks@gmail.com> Signed-off-by:
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Bhumika Goyal authored
Make the function arguments of functions vpfe_{register/unregister}_ccdc_device const as the pointer dev does not modify the fields of the structure it points to. Also, declare the variable ccdc_dev const as it points to the same structure as dev but it does not modify the fields as well. Signed-off-by:
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