0001 .. SPDX-License-Identifier: GPL-2.0
0002
0003 OMAP4 ISS Driver
0004 ================
0005
0006 Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
0007
0008 Copyright (C) 2012, Texas Instruments
0009
0010 Introduction
0011 ------------
0012
0013 The OMAP44XX family of chips contains the Imaging SubSystem (a.k.a. ISS),
0014 Which contains several components that can be categorized in 3 big groups:
0015
0016 - Interfaces (2 Interfaces: CSI2-A & CSI2-B/CCP2)
0017 - ISP (Image Signal Processor)
0018 - SIMCOP (Still Image Coprocessor)
0019
0020 For more information, please look in [#f1]_ for latest version of:
0021 "OMAP4430 Multimedia Device Silicon Revision 2.x"
0022
0023 As of Revision AB, the ISS is described in detail in section 8.
0024
0025 This driver is supporting **only** the CSI2-A/B interfaces for now.
0026
0027 It makes use of the Media Controller framework [#f2]_, and inherited most of the
0028 code from OMAP3 ISP driver (found under drivers/media/platform/ti/omap3isp/\*),
0029 except that it doesn't need an IOMMU now for ISS buffers memory mapping.
0030
0031 Supports usage of MMAP buffers only (for now).
0032
0033 Tested platforms
0034 ----------------
0035
0036 - OMAP4430SDP, w/ ES2.1 GP & SEVM4430-CAM-V1-0 (Contains IMX060 & OV5640, in
0037 which only the last one is supported, outputting YUV422 frames).
0038
0039 - TI Blaze MDP, w/ OMAP4430 ES2.2 EMU (Contains 1 IMX060 & 2 OV5650 sensors, in
0040 which only the OV5650 are supported, outputting RAW10 frames).
0041
0042 - PandaBoard, Rev. A2, w/ OMAP4430 ES2.1 GP & OV adapter board, tested with
0043 following sensors:
0044 * OV5640
0045 * OV5650
0046
0047 - Tested on mainline kernel:
0048
0049 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary
0050
0051 Tag: v3.3 (commit c16fa4f2ad19908a47c63d8fa436a1178438c7e7)
0052
0053 File list
0054 ---------
0055 drivers/staging/media/omap4iss/
0056 include/linux/platform_data/media/omap4iss.h
0057
0058 References
0059 ----------
0060
0061 .. [#f1] http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?navigationId=12037&templateId=6123#62
0062 .. [#f2] http://lwn.net/Articles/420485/
