From: Martin Sperl Date: Mon, 6 Apr 2015 17:16:31 +0000 (+0000) Subject: spi: bcm2835: transform native-cs to gpio-cs on first spi_setup X-Git-Tag: omap-for-v4.2/o2_dc~166^2~5^4~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a30a555d7435a440fab06fe5960cf3448d8cedd3;p=pandora-kernel.git spi: bcm2835: transform native-cs to gpio-cs on first spi_setup Transforms the bcm-2835 native SPI-chip select to their gpio-cs equivalent. This allows for some support of some optimizations that are not possible due to HW-gliches on the CS line - especially filling the FIFO before enabling SPI interrupts (by writing to CS register) while the transfer is already in progress (See commit: e3a2be3030e2) This patch also works arround some issues in bcm2835-pinctrl which does not set the value when setting the GPIO as output - it just sets up output and (typically) leaves the GPIO as low. When a fix for this is merged then this gpio_set_value can get removed from bcm2835_spi_setup. Signed-off-by: Martin Sperl Signed-off-by: Mark Brown --- Reading git-diff-tree failed