- 06 Jan, 2013 22 commits
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Sylwester Nawrocki authored
This patch patch eliminates potential AB-BA deadlock when one process calls open(), or VIDIOC_S/TRY_FMT ioctl on the FIMC capture video node, while other thread is reconfiguring media links via media device node: /dev/video? open() /dev/media? MEDIA_IOC_SETUP_LINK ioctl mutex_lock(video_lock) mutex_lock(graph_lock) fimc_pipeline_open() fimc_md_link_notify() mutex_lock(graph_lock) mutex_lock(video_lock) ... ... The deadlock is avoided by always taking the graph mutex first in video node open() or an ioctl, before the video lock is acquired. Reversed order seems impossible, since media device driver's link_notify callback is called with media graph mutex already held. To ensure proper locking order VIDIOC_S_FMT and VIDIOC_TRY_FMT ioctls are not serialized in the v4l2-core and the driver takes care of it itself. Signed-off-by:Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Tony Prisk authored
Replace IS_ERR_OR_NULL with IS_ERR on clk_get results. Signed-off-by:
Tony Prisk <linux@prisktech.co.nz> Signed-off-by:
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Sylwester Nawrocki authored
Replace the hard coded csi_sensors[] array size with a relevant constant to make sure we don't iterate beyond the actual array. Signed-off-by:
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Sylwester Nawrocki authored
This fixes following issue found with a static analysis tool: Pointer 'ffmt' returned from call to function 'fimc_capture_try_format' at line 1522 may be NULL and may be dereferenced at line 1535. Although it shouldn't happen in practice, add the NULL pointer check to be on the safe side. Signed-off-by:
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Antti Palosaari authored
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Antti Palosaari <crope@iki.fi> Signed-off-by:
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Antti Palosaari authored
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Antti Palosaari authored
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Antti Palosaari authored
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Antti Palosaari authored
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Antti Palosaari authored
There is no need to keep dummy sleep() callback implementation as DVB-core checks existence of it before calls callback. Due to that we can remove it. FC0012 is based of direct-conversion receiver architecture (aka Zero-IF) where is no IF used. Due to that IF is always 0 Hz. Fix comment to point that. Signed-off-by:
Hans-Frieder Vogt <hfvogt@gmx.net> Signed-off-by:
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Antti Palosaari authored
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Antti Palosaari authored
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Antti Palosaari authored
No need to copy config to the driver state. Those are coming from the const struct and could be used directly. Signed-off-by:
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Antti Palosaari authored
That adds support for AF9035 dual devices having FC0012 tuners. Signed-off-by:
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Antti Palosaari authored
We need feed clock to slave demodulator at the very beginning in case of dual tuner configuration. I am not sure if that configuration changes clock output divider or enable clock output itself... Signed-off-by:
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Antti Palosaari authored
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Antti Palosaari authored
I need even more configuration options and overloading dvb_attach() for all those sounds quite stupid. Due to that switch struct and make room for new options. Signed-off-by:
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Antti Palosaari authored
Various small changes and fixes releated to dual mode. Signed-off-by:
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Jose Alberto Reguero authored
Adds initial support for af9035 dual mode designs. Signed-off-by:
Jose Alberto Reguero <jareguero@telefonica.net> [crope@iki.fi: fix merge conflict] Signed-off-by:
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Antti Palosaari authored
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Antti Palosaari authored
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Mauro Carvalho Chehab authored
Now that it uses videobuf2, em28xx can support DMABUF. Tested with an HVR-950 on analog mode and a 2gen i5core machine with an i915 graphics adapter. Signed-off-by:
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- 05 Jan, 2013 18 commits
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Mauro Carvalho Chehab authored
The above commit were applied only partially; it broke tuner and demod attach, but the part that added it to ngene_info was missing. Not sure what happened there, but, without this patch, a regression would be happening. Also, gcc complains about a defined but not used symbol. So, apply manually the missing part. Cc: Patrice Chotard <patricechotard@free.fr> Cc: Antti Palosaari <crope@iki.fi> Signed-off-by: -
Fabio Estevam authored
Converting it to platform code can make the code smaller. Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Javier Martin authored
After removing i.mx25 support and buf_cleanup() callback, buffer states are not used in the code any longer. Signed-off-by:
Javier Martin <javier.martin@vista-silicon.com> Signed-off-by:
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Javier Martin authored
All necessary tasks to end the streaming properly are already implemented in mx2_stop_streaming() and nothing remains to be done in this callback. Furthermore, it only included debug messages so it can be removed. Signed-off-by:
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Javier Martin authored
i.MX25 support has been broken for several releases now and nobody seems to care about it. Signed-off-by:
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Guennadi Liakhovetski authored
I2C drivers can use devm_kzalloc() too in their .probe() methods. Doing so simplifies their clean up paths. Signed-off-by:
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Guennadi Liakhovetski authored
struct soc_camera_link currently contains fields, used both by sensor and bridge drivers. To make subdevice driver re-use simpler, split it into a host and a subdevice parts. Signed-off-by:
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Guennadi Liakhovetski authored
Currently soc-camera has a per-device node lock, used for video operations and a per-host lock for code paths, modifying host's pipeline. Manipulating the two locks increases complexity and doesn't bring any advantages. This patch removes the per-device lock and uses the per-host lock for all operations. Signed-off-by:
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Guennadi Liakhovetski authored
Currently devm_regulator_bulk_get() is called by soc-camera during host driver probing, but regulators are attached to the camera platform device, that is staying, independent whether the host probed successfully or not. This can lead to repeated regulator requesting, if the host driver is re-probed. Move the call to platform device probing to avoid this. Signed-off-by:
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Guennadi Liakhovetski authored
The recently introduced host_lock causes lockdep warnings, besides, list enumeration in scan_add_host() must be protected by holdint the list_lock. OTOH, holding .video_lock in soc_camera_open() isn't enough to protect the host during its building of the pipeline, because .video_lock is per soc-camera device. If, e.g. more than one sensor can be attached to a host and the user tries to open both device nodes simultaneously, host's .add() method can be called simultaneously for both sensors. Fix these problems by holding list_lock instead of .host_lock in scan_add_host() and taking it shortly at the beginning of soc_camera_open(), and using .host_lock to protect host's .add() and .remove() operations only. Signed-off-by:
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Wei Yongjun authored
The dereference to 'icl' should be moved below the NULL test. Reported-by:
Fengguang Wu <fengguang.wu@intel.com> Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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Mauro Carvalho Chehab authored
That fixes the following warning: drivers/media/usb/em28xx/em28xx-video.c:611:5: warning: no previous prototype for 'em28xx_stop_streaming' [-Wmissing-prototypes] Signed-off-by: -
Laurent Pinchart authored
When subdev registration fails the subdev v4l2_dev field is left to a non-NULL value. Later calls to v4l2_device_unregister_subdev() will consider the subdev as registered and will module_put() the subdev module without any matching module_get(). Fix this by setting the subdev v4l2_dev field to NULL in v4l2_device_register_subdev() when the function fails. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: stable@vger.kernel.org Acked-by:
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Frank Schaefer authored
EEPROMs are currently read in blocks of 16 bytes, but the em2800 is limited to 4 bytes per read. All other chip variants support reading of max. 64 bytes at once (according to the em258x datasheet; also verified with em2710, em2882, and em28174). Since em2800_i2c_recv_bytes() has been fixed to return with -EOPNOTSUPP when more than 4 bytes are requested, EEPROM reading with this chip is broken. It was actually broken before that change, too, it just didn't throw an error because the i2c adapter silently returned trash data (for all reads >1 byte !). Signed-off-by:
Frank Schäfer <fschaefer.oss@googlemail.com> Signed-off-by:
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Frank Schaefer authored
- do not pass USB specific error codes to userspace/i2c-subsystem - unify the returned error codes and make them compliant with the i2c subsystem spec - check number of actually transferred bytes (via USB) everywehere - fix/improve debug messages - improve code comments Signed-off-by:
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Frank Schaefer authored
I2C_FUNC_SMBUS_EMUL includes flag I2C_FUNC_SMBUS_WRITE_BLOCK_DATA which signals that up to 31 data bytes can be written to the ic2 client. But the EM2800 supports only i2c messages with max. 4 data bytes. I2C_FUNC_IC2 should be set if a master_xfer function pointer is provided in struct i2c_algorithm. Signed-off-by:
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Frank Schaefer authored
Function em2800_i2c_recv_bytes() has 2 severe bugs: 1) It does not wait for the i2c read to complete before reading the received message content from the bridge registers. 2) Reading more than 1 byte doesn't work The former can result in data corruption, the latter always does. The rewritten code also superseds the content of function em2800_i2c_check_for_device(). Tested with device "Terratec Cinergy 200 USB". [mchehab@redhat.com: Fix CodingStyle issues] Signed-off-by:
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Frank Schaefer authored
The em2800 can transfer up to 4 bytes per i2c message. All other em25xx/em27xx/28xx chips can transfer at least 64 bytes per message. I2C adapters should never split messages transferred via the I2C subsystem into multiple message transfers, because the result will almost always NOT be the same as when the whole data is transferred to the I2C client in a single message. If the message size exceeds the capabilities of the I2C adapter, -EOPNOTSUPP should be returned. Signed-off-by:
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