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52 Commits

Author SHA1 Message Date
Florian Fainelli
cde4384e10 spi/bcm63xx: convert to the pump message infrastructure 
This patch converts the bcm63xx SPI driver to use the SPI infrastructure
pump message queue. Since we were previously sleeping in the SPI
driver's transfer() function (which is not allowed) this is now fixed as well.

To complete that conversion a certain number of changes have been made:
- the transfer len is split into multiple hardware transfers in case its
  size is bigger than the hardware FIFO size
- the FIFO refill is no longer done in the interrupt context, which was a
  bad idea leading to quick interrupt handler re-entrancy

Tested-by: Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
 2012-04-27 11:15:41 -06:00
Florian Fainelli
b42dfed83d spi: add Broadcom BCM63xx SPI controller driver 
This patch adds support for the SPI controller found on the Broadcom BCM63xx
SoCs.

Signed-off-by: Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
 2012-03-09 15:03:03 -07:00