spi: controller driver for Designware SPI core and PCI interface

Hi all,

This patch series adds driver for Designware SPI core + PCI interface, and they are generated against kernel 2.6.32-rc4

0001: driver for the DW SPI core
0002: driver for PCI interface
0003: add DMA support

This driver has been verified on Intel Moorestown platform, with Maxim's Max3110 UART device and Option's 3G modem GTM501L, both PIO and DMA works fine, and these 2 slave devcies can work simultaneously.

0003 is RFC only, as it has dependency over DMA controller driver's acceptance to mainline.

User can use "dw_apb_ssi_db.pdf" from Synopsys as HW datasheet

please help to review them.

---------------
change history:
v3
* address some review comments from Andrew Morton

v2
* divide the original one driver to "core+interface" framework according to David's comments

v1
* initial submission

Thanks,
Feng

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What is "DMA controller driver"? Some other patch? What is the status of that patch and where is it?

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Yes, it's another driver patch for DMA controller of Moorestown, which is developed by another guy. I don't know if he has submitted the patch to community (I guess not), though we did test the SPIC+DMAC+3G-Modem.

Thanks,
Feng

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So am I correct in believing that your "0003: add DMA support" doesn't actually work? That it depends on some other patch which is unavailable to testers and reviewers and patch integrators?

Strange.

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Yes, it's fair enough to not trust the 0003 patch and remove it from mm tree :) That's why I added a [RFC] for it.

Also many thanks for reviewing the patches, they have been not receiving any comments for a while.

Thanks,
Feng

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