22. OMAP4 ISS Driver¶
Author: Sergio Aguirre <email@example.com>
Copyright (C) 2012, Texas Instruments
The OMAP44XX family of chips contains the Imaging SubSystem (a.k.a. ISS), Which contains several components that can be categorized in 3 big groups:
Interfaces (2 Interfaces: CSI2-A & CSI2-B/CCP2)
ISP (Image Signal Processor)
SIMCOP (Still Image Coprocessor)
For more information, please look in 1 for latest version of: "OMAP4430 Multimedia Device Silicon Revision 2.x"
As of Revision AB, the ISS is described in detail in section 8.
This driver is supporting only the CSI2-A/B interfaces for now.
It makes use of the Media Controller framework 2, and inherited most of the code from OMAP3 ISP driver (found under drivers/media/platform/omap3isp/*), except that it doesn't need an IOMMU now for ISS buffers memory mapping.
Supports usage of MMAP buffers only (for now).
22.2. Tested platforms¶
OMAP4430SDP, w/ ES2.1 GP & SEVM4430-CAM-V1-0 (Contains IMX060 & OV5640, in which only the last one is supported, outputting YUV422 frames).
TI Blaze MDP, w/ OMAP4430 ES2.2 EMU (Contains 1 IMX060 & 2 OV5650 sensors, in which only the OV5650 are supported, outputting RAW10 frames).
PandaBoard, Rev. A2, w/ OMAP4430 ES2.1 GP & OV adapter board, tested with following sensors: * OV5640 * OV5650
Tested on mainline kernel:
Tag: v3.3 (commit c16fa4f2ad19908a47c63d8fa436a1178438c7e7)
22.3. File list¶