SPI low level driver for Virtex

[Robert S. Grimes]

Hi Thomas,

Not that I'm ready yet, especially with my build problems, but does the 
following make sense for inclusion in libbsp/powerpc/virtex/include/bsp.h?

  #define RTEMS_BSP_SPI_AD7490_0_DEVICE_NAME "lsad0"
  #define RTEMS_BSP_SPI_AD7490_0_DEVICE_PATH "/dev/spi0.lsad0"
  #define RTEMS_BSP_SPI_AD7490_1_DEVICE_NAME "lsad1"
  #define RTEMS_BSP_SPI_AD7490_1_DEVICE_PATH "/dev/spi0.lsad1"
  #define RTEMS_BSP_SPI_AD7490_2_DEVICE_NAME "lsad2"
  #define RTEMS_BSP_SPI_AD7490_2_DEVICE_PATH "/dev/spi0.lsad2"
  #define RTEMS_BSP_SPI_AD7490_3_DEVICE_NAME "lsad3"
  #define RTEMS_BSP_SPI_AD7490_3_DEVICE_PATH "/dev/spi0.lsad3"
  #define RTEMS_BSP_SPI_AD7490_4_DEVICE_NAME "lsad4"
  #define RTEMS_BSP_SPI_AD7490_4_DEVICE_PATH "/dev/spi0.lsad4"
  #define RTEMS_BSP_SPI_AD7490_5_DEVICE_NAME "lsad5"
  #define RTEMS_BSP_SPI_AD7490_5_DEVICE_PATH "/dev/spi0.lsad5"

  #define RTEMS_BSP_SPI_FRAM_DEVICE_NAME  "fram"
  #define RTEMS_BSP_SPI_FRAM_DEVICE_PATH  "/dev/spi1.fram"

  #define RTEMS_BSP_SPI_SD_DEVICE_NAME  "sd"
  #define RTEMS_BSP_SPI_SD_DEVICE_PATH  "/dev/spi2.sd"

As you may guess, my Virtex-4 configuration includes three instances of 
their SPI IP (e.g. opb_spi), the first having 6 chip selects, and the 
other two having just one each.  I'm guessing the _DEVICE_NAME macros 
don't really matter too much, as long as they are unique; I'm more 
concerned about the _DEVICE_PATH macros.


Thomas Doerfler wrote:
> By the way: You wrote you would need a driver for a SPI Ramtron memory.
> I actually "virtualized" the spi-flash*.c driver to be adaptable to
> memory devices with similar interface, I already use it for a FM24L256.
> So I would recommend to write the the ADC driver first, and wait 'til I
> can update the CVS...)
>
> wkr,
> Thomas.
>   

Again, not that I'm ready, but any updates?

Thanks much!
-Bob