| OMAP4 ISS Driver |
| ================ |
| |
| 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 [1] for latest version of: |
| "OMAP4430 Multimedia Device Silicon Revision 2.x" |
| |
| As of Revision L, the ISS is described in detail in section 8. |
| |
| This driver is supporting _only_ the CSI2-A interface 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/video/omap3isp/*), except |
| that it doesn't need an IOMMU now for ISS buffers memory mapping. |
| |
| Supports usage of MMAP buffers only (for now). |
| |
| IMPORTANT: It is recommended to have this patchset: |
| Contiguous Memory Allocator (v15) [3]. |
| |
| 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). |
| |
| - 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-2.6.git;a=summary |
| |
| Tag: v3.0 (commit 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe) |
| |
| File list |
| --------- |
| drivers/media/video/omap4iss/ |
| |
| References |
| ---------- |
| |
| [1] http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?navigationId=12037&templateId=6123#62 |
| [2] http://lwn.net/Articles/420485/ |
| [3] http://lwn.net/Articles/455801/ |
| -- |
| Author: Sergio Aguirre <saaguirre@ti.com> |
| Copyright (C) 2011, Texas Instruments |
| |
