| .. SPDX-License-Identifier: GPL-2.0 |
| |
| 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/ |
