61 lines
1.8 KiB
ReStructuredText
61 lines
1.8 KiB
ReStructuredText
|
OMAP4 ISS Driver
|
||
|
|
================
|
||
|
|
|
||
|
|
Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
|
||
|
|
|
||
|
|
Copyright (C) 2012, Texas Instruments
|
||
|
|
|
||
|
|
Introduction
|
||
|
|
------------
|
||
|
|
|
||
|
|
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 [#f1]_ 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 [#f2]_, 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).
|
||
|
|
|
||
|
|
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:
|
||
|
|
|
||
|
|
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=summary
|
||
|
|
|
||
|
|
Tag: v3.3 (commit c16fa4f2ad19908a47c63d8fa436a1178438c7e7)
|
||
|
|
|
||
|
|
File list
|
||
|
|
---------
|
||
|
|
drivers/staging/media/omap4iss/
|
||
|
|
include/linux/platform_data/media/omap4iss.h
|
||
|
|
|
||
|
|
References
|
||
|
|
----------
|
||
|
|
|
||
|
|
.. [#f1] http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?navigationId=12037&templateId=6123#62
|
||
|
|
.. [#f2] http://lwn.net/Articles/420485/
|