Re: New driver for MCP2210 (USB to SPI bridge w/GPIO)

Re: New driver for MCP2210 (USB to SPI bridge w/GPIO)

[Daniel Santos]

>   3. When my driver is called via the functions exported in the struct
>      spi_master after I register it with spi_register_master(), I'm
>      presuming these will never be in an interrupt context (soft or
>      hard).  Is that correct?  (I'm planning on using simple mutexes for
>      locking.)

Correction, I'll be calling transfer_one_message() instead of 
transfer(), as I now see that this function is depreciated (thanks to 
the output in dmesg).  And the docs say that I can sleep in these 
functions, so I presume that mutex_(un)lock is fine.

Daniel

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Re: New driver for MCP2210 (USB to SPI bridge w/GPIO)

[Daniel Santos]

>   4. How do I specify in my specific driver that it's dependent upon the
>      generic MCP2210 driver?  I know that's easy if it's in-tree via
>      Kconfig, but out-of-tree, during module_init or some such?
hah! Well I appear to have answered two of my own questions now. Looks 
like depmod actually figures out what unresolved symbols you have and 
find the modules that way, very nice!  Maybe this also answers my 5th 
question as well.

Daniel


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analytics on semi-structured data. The platform includes APIs for building
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our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter