59f0ad8076
This adds a very simplistic driver to utilize the CSI2A interface inside the ISS subsystem in OMAP4, and dump the data to memory. Check Documentation/video4linux/omap4_camera.txt for details. This commit adds the driver core, registers definitions and documentation. Signed-off-by: Sergio Aguirre <sergio.a.aguirre@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
60 lines
1.9 KiB
Text
60 lines
1.9 KiB
Text
OMAP4 ISS Driver
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================
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Introduction
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------------
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The OMAP44XX family of chips contains the Imaging SubSystem (a.k.a. ISS),
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Which contains several components that can be categorized in 3 big groups:
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- Interfaces (2 Interfaces: CSI2-A & CSI2-B/CCP2)
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- ISP (Image Signal Processor)
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- SIMCOP (Still Image Coprocessor)
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For more information, please look in [1] for latest version of:
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"OMAP4430 Multimedia Device Silicon Revision 2.x"
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As of Revision AB, the ISS is described in detail in section 8.
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This driver is supporting _only_ the CSI2-A/B interfaces for now.
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It makes use of the Media Controller framework [2], and inherited most of the
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code from OMAP3 ISP driver (found under drivers/media/platform/omap3isp/*),
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except that it doesn't need an IOMMU now for ISS buffers memory mapping.
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Supports usage of MMAP buffers only (for now).
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Tested platforms
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----------------
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- OMAP4430SDP, w/ ES2.1 GP & SEVM4430-CAM-V1-0 (Contains IMX060 & OV5640, in
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which only the last one is supported, outputting YUV422 frames).
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- TI Blaze MDP, w/ OMAP4430 ES2.2 EMU (Contains 1 IMX060 & 2 OV5650 sensors, in
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which only the OV5650 are supported, outputting RAW10 frames).
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- PandaBoard, Rev. A2, w/ OMAP4430 ES2.1 GP & OV adapter board, tested with
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following sensors:
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* OV5640
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* OV5650
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- Tested on mainline kernel:
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=summary
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Tag: v3.3 (commit c16fa4f2ad19908a47c63d8fa436a1178438c7e7)
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File list
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---------
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drivers/staging/media/omap4iss/
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include/media/omap4iss.h
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References
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----------
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[1] http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?navigationId=12037&templateId=6123#62
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[2] http://lwn.net/Articles/420485/
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[3] http://www.spinics.net/lists/linux-media/msg44370.html
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--
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Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
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Copyright (C) 2012, Texas Instruments
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