Messages in this thread | | | Date | Thu, 17 Apr 2008 15:35:28 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: Smartmedia/xd card support - request for comments |
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On Thu, 17 Apr 2008, Alex Dubov wrote:
> I've implemented, with generous help from JMicron, a native support > for Smartmedia/xD picture card media. Currently, only JMicron > backend is available, but TI expressed some interest in this too, so > TI Flashmedia backend may soon follow.
> Smartmedia cards are quite akin to the dumb flash chips, but they > have their quirks that put them aside as a separate media type.
Smartmedia cards _ARE_ dumb NAND flash chips in a thin plastic cover with gold contacts. The access to those cards is supported in the mtd subsystem since ages. Why are you trying to reinvent the wheel ?
The only missing piece is the FTL layer, but there was a halfways working version in the old mtd CVS which should be still available.
> management of flash memory. I studied the mtd layer, but found it to > be not very helpful, so I wrote my own FTL module.
Err, why is MTD not helpful ? It covers all the low level access to the NAND Flash and has a flexible interface to adapt to hardware.
We really do not need a second incarnation of NAND flash software in the kernel.
Thanks, tglx
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