- 04 Jan, 2021 35 commits
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Sowjanya Komatineni authored
Tegra VI/CSI hardware don't have native 8 lane capture support. Each CSI port has max 4 lanes only. So for x8 captures, consecutive ports are ganged up for left half and right half captures on to each x4 ports with buffer offsets based on source image split width to align side-by-side. All ports in gang are configured together during the corresponding video device node streaming for x8 captures. x8 capture with gang ports are supported with HDMI-to-CSI bridges where they split 4K image into left half onto one x4 port and right half onto second x4 port. Signed-off-by:
Sowjanya Komatineni <skomatineni@nvidia.com> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Sowjanya Komatineni authored
Tegra VI/CSI hardware don't have native 8 lane CSI RX port. But x8 capture can be supported by using consecutive x4 ports simultaneously with HDMI-to-CSI bridges where source image is split on to two x4 ports. This patch updates dt-bindings for csi endpoint data-lane property with maximum of 8 lanes. Acked-by:
Rob Herring <robh@kernel.org> Acked-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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Sowjanya Komatineni authored
Some CSI2 receivers support 8 data lanes. So, this patch updates CSI2 maximum data lanes to be 8. Acked-by:
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Sowjanya Komatineni authored
Implement V4L2 device notify callback to handle V4L2_EVENT_SOURCE_CHANGE event from subdevices. HDMI-to-CSI bridge drivers trigger V4L2_EVENT_SOURCE_CHANGE when source DV timing changes are detected or when HDMI hotplug happens. Runtime source parameter changes during active streaming is not allowed and Tegra video driver calls vb2_queue_error to signal a fatal error if a notification of this event happens during an active streaming. Signed-off-by:
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Sowjanya Komatineni authored
Current implementation uses v4l2_ctrl_subscribe_event() and this does not handle V4L2_EVENT_SOURCE_CHANGE. So, update driver to handle V4L2_EVENT_SOURCE_CHANGE. Signed-off-by:
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Sowjanya Komatineni authored
This patch adds support for log_status ioctl. Signed-off-by:
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Sowjanya Komatineni authored
This patch adds support for EDID get and set v4l2 ioctl ops to use with HDMI to CSI bridges. Signed-off-by:
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Sowjanya Komatineni authored
This patch adds below v4l2 DV timing ioctls to support HDMI-to-CSI bridges. Signed-off-by:
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Sowjanya Komatineni authored
NV16 are two-plane versions of YUV422 format. VI/CSI surface0 registers corresponds to first Y plane and surface1 registers corresponds to seconds UV plane. This patch updates image size for NV16 format to include both planes and programs VI/CSI surface1 registers for UV plane capture. Signed-off-by:
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Sowjanya Komatineni authored
V4L2 pixel format is incorrect for RGB and YUV formats. This patch fixes it. Signed-off-by:
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Sowjanya Komatineni authored
VI Pixel transforms converts source pixel data to selected destination pixel formats in memory and aligns properly. YUV and RGB formats need this pixel transform to be enabled. RAW formats use T_R16_I destination pixel format in memory and does not need pixel transform as they support direct write to memory. So, this patch enables pixel transform for YUV and RGB and keeps it bypass for RAW formats. Signed-off-by:
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Sowjanya Komatineni authored
Currently try format implementation doesn't check if subdevice has get_selection ops implemented and returns -EINVAL on error from direct v4l2_subdev_call of get_selection. Selection API's are not mandatory for all V4L2 subdevices. This patch fixes it by adding v4l2_subdev_has_ops check prior to calling get_selection ops and continues with try or set format with zero crop settings for subdevices that don't have get_selection and returns -EINVAL only for subdevices that has get_selection ops. Signed-off-by:
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Laurent Pinchart authored
Rework the context API exposed to cal-video.c to simplify it. The configuration and enable steps are all grouped in a single cal_ctx_start() function, and the DMA stop and IRQ disable are similarly groupd in cal_ctx_stop(). The cal_ctx_wr_dma_addr() function is renamed to cal_ctx_set_dma_addr() for consistency with the cal_ctx_ prefix of the start and stop functions. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
Benoit Parrot <bparrot@ti.com> Signed-off-by:
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Laurent Pinchart authored
dma_addr_t is the correct type to store DMA addresses. Replace incorrect usage of unsigned long and unsigned int. Signed-off-by:
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Laurent Pinchart authored
When a pending buffer becomes active, the cal_dmaqueue.active field is updated, but the pending field keeps the same value until a new buffer becomes pending. This requires handling the special case of pending == active in different places. Simplify the code by setting the pending field to NULL when the pending buffer becomes active. Buffers are now simply moved from queue to pending and from pending to active. Signed-off-by:
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Laurent Pinchart authored
The cal_dmaqueue structure only contains the list of queued buffers. Move the other fields that are logically related to the DMA queue (current and next buffer points, state, wait queue and lock) from cal_ctx to cal_dmaqueue. Take this as an opportunity to document the fields usage and to give them more appropriate names. The 'active' field stored the list of all queued buffers, not the active buffers, so rename it to 'queue'. The 'cur_frm' and 'next_frm' are respectively renamed to 'active' and 'pending' to better explain their purpose. The 'dma_state' and 'dma_wait' fields are stripped of their 'dma_' prefix as they're now part of cal_dmaqueue. Finally, 'slock' is renamed to 'lock'. Signed-off-by:
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Laurent Pinchart authored
Use the list_first_entry() macro where appropriate to replace manual usage of list_entry(head.next). Signed-off-by:
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Laurent Pinchart authored
The vb2 queue ensures that the start streaming operation will only be called with a minimal number of buffers queued to the driver. There's thus no need to manually check if the DMA queue is empty. Remove the check. Signed-off-by:
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Laurent Pinchart authored
The cal_calc_format_size() function checks that the passed fmtinfo argument is not NULL. All callers ensure that the pointer is valid. Drop the check. Signed-off-by:
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Laurent Pinchart authored
The V4L2 read/write API is inefficient and makes little sense for devices that handle frame-based formats. Applications shouldn't use it, drop its support from the driver. Signed-off-by:
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Laurent Pinchart authored
The cal_start_streaming() and cal_stop_streaming() functions duplicate the same buffer release logic. split it to a separate function to share the code. Signed-off-by:
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Laurent Pinchart authored
The cal_start_streaming() and cal_stop_streaming() functions are called with interrupts enabled. spin_lock_irq() can thus be used instead of spin_lock_irqsave(). Signed-off-by:
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Laurent Pinchart authored
When stopping the stream, the driver needs to ensure that ongoing DMA completes and that no new DMA is started. It does so using a feature of the PPI that can be stopped on a frame boundary. The downside of this mechanism is that the DMA can't be stopped independently of the source, which prevents usage of multiple contexts for the same source (to handle CSI-2 virtual channels or data types). Rework the stream stop mechanism to stop the write DMA without disabling the PPI first. The new mechanism relies on the combination of a state machine in the driver and shadowing of the CAL_WR_DMA_CTRL_j.MODE field in the hardware. When a stop is requested, the DMA start interrupt handler will request the hardware to stop at the end of the current frame by disabling the write DMA context in the shadowed register, and flag that a stop is in progress. The next DMA end interrupt will then report that the stop is complete. This makes it possible to stop the PPI after stopping the DMA, and fold the cal_camerarx_ppi_disable() call into cal_camerarx_stop(). Signed-off-by:
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Laurent Pinchart authored
To further decouple the context and CAMERARX components, move the call to cal_camerarx_ppi_enable() from cal_start_streaming() to the CAMERARX .s_stream() operation. The DMA destination address has to be set before starting the CAMERARX, which is desirable anyway. cal_camerarx_ppi_disable() will be addressed separately. Signed-off-by:
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Laurent Pinchart authored
Interrupts are enabled and disabled by the cal_camerarx_enable_irqs() and cal_camerarx_disable_irqs(). Despite their name, they deal with all interrupts, not just the CAMERARX interrupts, and they hardcode the assumption that the context index is identical to the CAMERARX index. Split the context-related interrupt management to two new functions, cal_ctx_enable_irqs() and cal_ctx_disable_irqs(), called from the cal_start_streaming() and cal_stop_streaming() functions. The explicit calls to cal_camerarx_enable_irqs() and cal_camerarx_disable_irqs() are folded with the CAMERARX .s_stream() operation to simplify the CAMERARX API. Enabling the OCPO error interrupt is moved to the PM runtime resume operation, as it's global to the device, not related to a CAMERARX or context. The VC IRQ enable and disable are removed as they're not used, the parent interrupt bit (CAL_HL_IRQ_VC_MASK) never being set. Signed-off-by:
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Laurent Pinchart authored
The cal_fmt structure stores information about a format. Its name is ambiguous, as it could be understood as storing a format. Furthermore, instances of the structure are called 'fmt' through the code, which leads to confusion with the 'format' variables. Rename the structure to cal_format_info, and the corresponding 'fmt' variables to 'fmtinfo'. Signed-off-by:
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Laurent Pinchart authored
The cal_ctx_wr_dma_config() function has access to the context, there's no need to give it format-related values retrieved from the context. Access the values internally, and reword internal comments. The comment regarding the CAL_WR_DMA_OFST register not being well understood is dropped, as the datasheet explicitly documents it as "Offset between two consecutive line starts". Signed-off-by:
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Laurent Pinchart authored
Replace calls to cal_camerarx_start() and cal_camerarx_stop() with usage of the .s_stream() subdev operation. This requires calling the .set_fmt() operation as the CAMERARX now relies on the format information set through the subdev API instead of receiving it in the cal_camerarx_start() function. This change prepare for exposing the CAMERARX subdev operations to userspace by using the same API within the kernel. Signed-off-by:
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Laurent Pinchart authored
Implement subdev operations for the CAMERARX. They will be used to replace calls to custom CAMERARX functions in the V4L2 video device code, and will be exposed to userspace. Signed-off-by:
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Laurent Pinchart authored
When performing operations on all CAMERARX instances, code usually iterates over all cal->phy[] entries and skips the NULL pointers. The number of available CAMERARX instances is however available through cal->data->num_csi2_phy. Use it instead. Signed-off-by:
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Laurent Pinchart authored
Replace the hardcoded BIT(3) value with CAL_CSI2_PPI_CTRL_FRAME_MASK to increase readability. Signed-off-by:
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Laurent Pinchart authored
The MAX_WIDTH_BYTES and MAX_HEIGHT_LINES macros have a generic name that is prone to namespace clashes. Rename them with a CAL_ prefix. While at it, expand their documentation and add CAL_MIN_(WIDTH|HEIGHT)_* macros that will be used to implement CAMERARX subdev operations. Signed-off-by:
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Laurent Pinchart authored
The cal_formats array contain the description of all formats supported by the hardware. It's currently used by the V4L2 video device operations only, but will be needed by the CAMERARX subdev code too. Move it from cal-video.c to cal.c and add helper functions to access it. Signed-off-by:
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Laurent Pinchart authored
The struct cal_ctx m_fmt field stores the media bus format for the context input. Only the format 'field' field is used, store it in the video format instead, and drop m_fmt. Signed-off-by:
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Laurent Pinchart authored
Create and register V4L2 subdevs for the CAMERARX instances, and link them in the media graph to the sensors and video nodes. The subdev API is not exposed to userspace at this point, and no subdev operation is implemented, but the media controller graph is visible to applications. Signed-off-by:
Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by:
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- 27 Dec, 2020 5 commits
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Linus Torvalds authored
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Linus Torvalds authored
Since commit 36e2c742 ("fs: don't allow splice read/write without explicit ops") we've required that file operation structures explicitly enable splice support, rather than falling back to the default handlers. Most /proc files use the indirect 'struct proc_ops' to describe their file operations, and were fixed up to support splice earlier in commits 40be821d..b24c30c6, but the mountinfo files interact with the VFS directly using their own 'struct file_operations' and got missed as a result. This adds the necessary support for splice to work for /proc/*/mountinfo and friends. Reported-by:
Joan Bruguera Micó <joanbrugueram@gmail.com> Reported-by:
Jussi Kivilinna <jussi.kivilinna@iki.fi> Link: https://bugzilla.kernel.org/show_bug.cgi?id=209971 Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://github.com/jonmason/ntbLinus Torvalds authored
Pull NTB fixes from Jon Mason: "Bug fix for IDT NTB and Intel NTB LTR management support" * tag 'ntb-5.11' of git://github.com/jonmason/ntb: ntb: intel: add Intel NTB LTR vendor support for gen4 NTB ntb: idt: fix error check in ntb_hw_idt.c
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
Pull crypto fixes from Herbert Xu: "Fix a number of autobuild failures due to missing Kconfig dependencies" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: qat - add CRYPTO_AES to Kconfig dependencies crypto: keembay - Add dependency on HAS_IOMEM crypto: keembay - CRYPTO_DEV_KEEMBAY_OCS_AES_SM4 should depend on ARCH_KEEMBAY
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fix from Ingo Molnar: "Fix a segfault that occurs when built with Clang" * tag 'objtool-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix seg fault with Clang non-section symbols
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