- 05 Apr, 2017 40 commits
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Marek Szyprowski authored
The main reason for using special configuration of IOMMU domain was the problem with MFC firmware, which failed to operate properly when placed at 0 DMA address. Instead of adding custom code for configuring each variant of IOMMU domain and architecture specific glue code, simply use what arch code provides and if the DMA base address equals zero, skip first 128 KiB to keep required alignment. This patch also make the driver operational on ARM64 architecture, because it no longer depends on ARM specific DMA-mapping and IOMMU glue code functions. Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by:
Javier Martinez Canillas <javier@osg.samsung.com> Tested-by:
Andrzej Hajda <a.hajda@samsung.com> Tested-by:
Smitha T Murthy <smitha.t@samsung.com> Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Marek Szyprowski authored
Current MFC driver depends on the fact that when IOMMU is available, the DMA-mapping framework and its IOMMU glue will use first-fit allocator. This was true for ARM architecture, but its not for ARM64 arch. However, in case of MFC v6+ hardware and latest firmware, it turned out that there is no strict requirement for ALL buffers to be allocated on higher addresses than the firmware base. This requirement is true only for the device and per-context buffers. All video data buffers can be allocated anywhere for all MFC v6+ versions. Such relaxed requirements for the memory buffers can be easily fulfilled by allocating firmware, device and per-context buffers from the probe-time preallocated larger buffer. This patch adds support for it. This way the driver finally works fine on ARM64 architecture. The size of the preallocated buffer is 8 MiB, what is enough for three instances H264 decoders or encoders (other codecs have smaller memory requirements). If one needs more for particular use case, one can use "mem" module parameter to force larger (or smaller) buffer (for example by adding "s5p_mfc.mem=16M" to kernel command line). [mchehab@s-opensource.com: fix two checkpatch warnings: don't initialize static to NULL; don't use S_foo permisions] Signed-off-by:
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Marek Szyprowski authored
Move code for DMA memory configuration with IOMMU into separate function to make it easier to compare what is being done in each case. Signed-off-by:
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Marek Szyprowski authored
Firmware for MFC v6+ variants is not larger than 400 KiB, so there is no need to allocate a full 1 MiB buffer for it. Reduce it to 512 KiB to keep proper alignment of allocated buffer. Signed-off-by:
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Marek Szyprowski authored
Once firmware buffer has been converted to use s5p_mfc_priv_buf structure, it is possible to allocate it with existing s5p_mfc_alloc_priv_buf() function. This change will help to reduce code variants in the next patches. Signed-off-by:
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Marek Szyprowski authored
To complete DMA memory configuration for MFC device, allocation of the firmware buffer is needed, because some parameters are dependant on its base address. Till now, this has been handled in the s5p_mfc_alloc_firmware() function. This patch moves that logic to s5p_mfc_configure_dma_memory() to keep DMA memory related operations in a single place. This way s5p_mfc_alloc_firmware() is simplified and does what it name says. The other consequence of this change is moving s5p_mfc_alloc_firmware() call from the s5p_mfc_probe() function to the s5p_mfc_configure_dma_memory(). Signed-off-by:
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Marek Szyprowski authored
Use s5p_mfc_priv_buf structure for keeping the firmware image. This will help handling of firmware buffer allocation in the next patches. Signed-off-by:
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Marek Szyprowski authored
Setting DMA max segment size to 32 bit mask is a part of DMA memory configuration, so move those calls to s5p_mfc_configure_dma_memory() function. Signed-off-by:
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Marek Szyprowski authored
Change parameters for s5p_mfc_alloc_priv_buf() and s5p_mfc_release_priv_buf() functions. Instead of DMA device pointer and a base, provide common MFC device structure and memory bank context identifier. Signed-off-by:
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Marek Szyprowski authored
Internal MFC driver device structure contains two entries for keeping addresses of the DMA memory banks. Replace them with the dma_base[] array and use defines for accessing particular banks. This will help to simplify code in the next patches. Signed-off-by:
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Marek Szyprowski authored
Internal MFC driver device structure contains two pointers to devices used for DMA memory allocation: mem_dev_l and mem_dev_r. Replace them with the mem_dev[] array and use defines for accessing particular banks. This will help to simplify code in the next patches. Signed-off-by:
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Marek Szyprowski authored
Replace custom code with generic helper to retrieve driver data. Signed-off-by:
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Marek Szyprowski authored
Remove unused structures, definitions and functions that are no longer called from the driver code. Signed-off-by:
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Marek Szyprowski authored
Interrupt routine must wake process waiting for given interrupt AFTER updating driver's internal structures and contexts. Doing it in-between is a serious bug. This patch moves all calls to the wake() function to the end of the interrupt processing block to avoid potential and real races, especially on multi-core platforms. This also fixes following issue reported from clock core (clocks were disabled in interrupt after being unprepared from the other place in the driver, the stack trace however points to the different place than s5p_mfc driver because of the race): WARNING: CPU: 1 PID: 18 at drivers/clk/clk.c:544 clk_core_unprepare+0xc8/0x108 Modules linked in: CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 4.10.0-next-20170223-00070-g04e18bc99ab9-dirty #2154 Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) Workqueue: pm pm_runtime_work [<c010d8b0>] (unwind_backtrace) from [<c010a534>] (show_stack+0x10/0x14) [<c010a534>] (show_stack) from [<c033292c>] (dump_stack+0x74/0x94) [<c033292c>] (dump_stack) from [<c011cef4>] (__warn+0xd4/0x100) [<c011cef4>] (__warn) from [<c011cf40>] (warn_slowpath_null+0x20/0x28) [<c011cf40>] (warn_slowpath_null) from [<c0387a84>] (clk_core_unprepare+0xc8/0x108) [<c0387a84>] (clk_core_unprepare) from [<c0389d84>] (clk_unprepare+0x24/0x2c) [<c0389d84>] (clk_unprepare) from [<c03d4660>] (exynos_sysmmu_suspend+0x48/0x60) [<c03d4660>] (exynos_sysmmu_suspend) from [<c042b9b0>] (pm_generic_runtime_suspend+0x2c/0x38) [<c042b9b0>] (pm_generic_runtime_suspend) from [<c0437580>] (genpd_runtime_suspend+0x94/0x220) [<c0437580>] (genpd_runtime_suspend) from [<c042e240>] (__rpm_callback+0x134/0x208) [<c042e240>] (__rpm_callback) from [<c042e334>] (rpm_callback+0x20/0x80) [<c042e334>] (rpm_callback) from [<c042d3b8>] (rpm_suspend+0xdc/0x458) [<c042d3b8>] (rpm_suspend) from [<c042ea24>] (pm_runtime_work+0x80/0x90) [<c042ea24>] (pm_runtime_work) from [<c01322c4>] (process_one_work+0x120/0x318) [<c01322c4>] (process_one_work) from [<c0132520>] (worker_thread+0x2c/0x4ac) [<c0132520>] (worker_thread) from [<c0137ab0>] (kthread+0xfc/0x134) [<c0137ab0>] (kthread) from [<c0107978>] (ret_from_fork+0x14/0x3c) ---[ end trace 1ead49a7bb83f0d8 ]--- Fixes: af935746 ("[media] MFC: Add MFC 5.1 V4L2 driver") Signed-off-by:
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Shuah Khan authored
Fix s5p_mfc_set_dec_frame_buffer_v6() to print buffer pointer in hex to be consistent with the rest of the messages in the routine. Signed-off-by:
Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by:
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Shuah Khan authored
Remove unneeded io_modes initialization in s5p_mfc_open(). It gets done right below in vdev == dev->vfd_dec conditional. Signed-off-by:
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Marek Szyprowski authored
Initialize members of the internal device and context structures as early as possible to avoid access to uninitialized objects on initialization failures. If loading firmware or creating of the hardware instance fails, driver will access device or context queue in error handling path, which might not be initialized yet, what causes kernel panic. Fix this by moving initialization of all static members as early as possible. Signed-off-by:
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Mauro Carvalho Chehab authored
Changeset 446aba66 ("[media] tveeprom: get rid of unused arg on tveeprom_hauppauge_analog()") removed the now unused I2C adapter struct from struct tveeprom. Remove the corresponding kernel-doc tag. Fixes: 446aba66 ("[media] tveeprom: get rid of unused arg on tveeprom_hauppauge_analog()") Signed-off-by:
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Mauro Carvalho Chehab authored
Changeset 1f862a68 ("[media] dvb_frontend: move kref to struct dvb_frontend") added a kref to the struct dvb_frontend, but it didn't document it. Fixes: 1f862a68 ("[media] dvb_frontend: move kref to struct dvb_frontend") Signed-off-by:
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Elena Reshetova authored
Use refcount_t to manage the refcount to the memory type specific buffer videobuf2 buffer implementations. refcount_t is better suitable for the purpose than atomic_t. Signed-off-by:
Elena Reshetova <elena.reshetova@intel.com> Signed-off-by:
Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
David Windsor <dwindsor@gmail.com> Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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Elena Reshetova authored
refcount_t is better suitable for counting references than atomic_t. Signed-off-by:
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Hans Verkuil authored
Document the new cec_get_drvdata() helper function. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
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Hans Verkuil authored
The VIDIOC_G_EDID implementation in vivid didn't take edid->start_block into account when copying the EDID data. Make sure that the internal EDID is updated with the correct CEC physical address. Currently the returned EDID is updated, but that will only work well if edid->start_block is 0. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
Jose Abreu <joabreu@synopsys.com> Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Use helper function to get driver private data from CEC adapter. Signed-off-by:
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Jose Abreu authored
Add a helper function to get driver private data from CEC adapter. This helps the readability a little bit and allows to change the 'priv' field name to something else without needing to touch all drivers. Signed-off-by:
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Geliang Tang authored
Use for_each_sg() instead of open-coding it. Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
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Anton Leontiev authored
Correct meaning of the last sensence by swapping it with previous. Fix two small typos. Signed-off-by:
Anton Leontiev <scileont@gmail.com> Signed-off-by:
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Colin Ian King authored
The check for ret being non-zero is false as ret is always zero, hence we have redundant dead code that can be removed. Detected with CoverityScan, CID#112968 ("Constant' variable guards dead code (DEADCODE)'") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Matthias Kaehlcke authored
The extra pairs of parentheses are not needed and cause clang warnings like this: drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c:158:32: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality] if ((inst->work_bufs[i].size == 0)) ~~~~~~~~~~~~~~~~~~~~~~~~^~~~ drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c:158:32: note: remove extraneous parentheses around the comparison to silence this warning if ((inst->work_bufs[i].size == 0)) ~ ^ ~ drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c:158:32: note: use '=' to turn this equality comparison into an assignment if ((inst->work_bufs[i].size == 0)) ^~ = Signed-off-by:Matthias Kaehlcke <mka@chromium.org> Signed-off-by:
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Baruch Siach authored
Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Signed-off-by:
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Minghsiu Tsai authored
The symptom is continuous log "mtk-jpeg 18004000.jpegdec: Context is NULL" in kernel log. It is because the error handling in irq doesn't clear interrupt. The calling flow like as below when issue happen mtk_jpeg_device_run() mtk_jpeg_job_abort() v4l2_m2m_job_finish() -> m2m_dev->curr_ctx = NULL; mtk_jpeg_dec_irq() v4l2_m2m_get_curr_priv() -> m2m_dev->curr_ctx == NULL -> return NULL log "Context is NULL" There is race condition between job_abort() and irq. In order to simplify code, don't want to add extra flag to maintain state, empty job_abort() and clear interrupt before v4l2_m2m_get_curr_priv() in irq. Signed-off-by:Minghsiu Tsai <minghsiu.tsai@mediatek.com> Acked-by:
Rick Chang <rick.chang@mediatek.com> Signed-off-by:
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Johan Hovold authored
Make sure to check the number of endpoints to avoid accessing memory beyond the endpoint array should a device lack the expected endpoints. Note that, as far as I can tell, the gspca framework has already made sure there is at least one endpoint in the current alternate setting so there should be no risk for a NULL-pointer dereference here. Fixes: b517af72 ("V4L/DVB: gspca_konica: New gspca subdriver for konica chipset using cams") Cc: stable <stable@vger.kernel.org> # 2.6.37 Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
Hans Verkuil <hansverk@cisco.com> Signed-off-by:
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Colin Ian King authored
The are only HIST_ENTRIES worth of entries in hist_entry however the for-loop is iterating one too many times leasing to a read access off the end off the array ctrls->hist_entry. Fix this by iterating by the correct number of times. Detected by CoverityScan, CID#1415279 ("Out-of-bounds read") Signed-off-by: -
Hugues Fruchet authored
Initialize 'data_offset' local variable to 0. drivers/media/platform/sti/delta/delta-mjpeg-dec.c:415 delta_mjpeg_decode() error: uninitialized symbol 'data_offset'. Fixes: 433ff5b4: "[media] st-delta: add mjpeg support" Signed-off-by:
Hugues Fruchet <hugues.fruchet@st.com> Signed-off-by:
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