162306a36Sopenharmony_ci.. SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciOMAP4 ISS Driver 462306a36Sopenharmony_ci================ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciAuthor: Sergio Aguirre <sergio.a.aguirre@gmail.com> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ciCopyright (C) 2012, Texas Instruments 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciIntroduction 1162306a36Sopenharmony_ci------------ 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ciThe OMAP44XX family of chips contains the Imaging SubSystem (a.k.a. ISS), 1462306a36Sopenharmony_ciWhich contains several components that can be categorized in 3 big groups: 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci- Interfaces (2 Interfaces: CSI2-A & CSI2-B/CCP2) 1762306a36Sopenharmony_ci- ISP (Image Signal Processor) 1862306a36Sopenharmony_ci- SIMCOP (Still Image Coprocessor) 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ciFor more information, please look in [#f1]_ for latest version of: 2162306a36Sopenharmony_ci"OMAP4430 Multimedia Device Silicon Revision 2.x" 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ciAs of Revision AB, the ISS is described in detail in section 8. 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ciThis driver is supporting **only** the CSI2-A/B interfaces for now. 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciIt makes use of the Media Controller framework [#f2]_, and inherited most of the 2862306a36Sopenharmony_cicode from OMAP3 ISP driver (found under drivers/media/platform/ti/omap3isp/\*), 2962306a36Sopenharmony_ciexcept that it doesn't need an IOMMU now for ISS buffers memory mapping. 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ciSupports usage of MMAP buffers only (for now). 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ciTested platforms 3462306a36Sopenharmony_ci---------------- 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ci- OMAP4430SDP, w/ ES2.1 GP & SEVM4430-CAM-V1-0 (Contains IMX060 & OV5640, in 3762306a36Sopenharmony_ci which only the last one is supported, outputting YUV422 frames). 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci- TI Blaze MDP, w/ OMAP4430 ES2.2 EMU (Contains 1 IMX060 & 2 OV5650 sensors, in 4062306a36Sopenharmony_ci which only the OV5650 are supported, outputting RAW10 frames). 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ci- PandaBoard, Rev. A2, w/ OMAP4430 ES2.1 GP & OV adapter board, tested with 4362306a36Sopenharmony_ci following sensors: 4462306a36Sopenharmony_ci * OV5640 4562306a36Sopenharmony_ci * OV5650 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ci- Tested on mainline kernel: 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ci http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ci Tag: v3.3 (commit c16fa4f2ad19908a47c63d8fa436a1178438c7e7) 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ciFile list 5462306a36Sopenharmony_ci--------- 5562306a36Sopenharmony_cidrivers/staging/media/omap4iss/ 5662306a36Sopenharmony_ciinclude/linux/platform_data/media/omap4iss.h 5762306a36Sopenharmony_ci 5862306a36Sopenharmony_ciReferences 5962306a36Sopenharmony_ci---------- 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_ci.. [#f1] http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?navigationId=12037&templateId=6123#62 6262306a36Sopenharmony_ci.. [#f2] http://lwn.net/Articles/420485/ 63