From: Peter Turczak Date: Tue, 9 Aug 2011 04:11:19 +0000 (+1000) Subject: m68knommu: fix problems with SPI/GPIO on ColdFire 520x X-Git-Tag: v3.2-rc1~174^2~12 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89127ed381fb244aa51c1a74ed695a1f3578ef7d;p=pandora-kernel.git m68knommu: fix problems with SPI/GPIO on ColdFire 520x The problem has its root in the calculation of the set-port offsets (macro MCFGPIO_SETR() in arch/m68k/include/asm/gpio.h), this assumes that all ports have the same offset from the base port address (MCFGPIO_SETR) which is defined in mcf520xsim.h as an alias of MCFGIO_PSETR_BUSCTL. Because the BUSCTL and BE port do not have a set-register (see MCF5208 Reference Manual Page 13-10, Table 13-3) the offset calculations went wrong. Because the BE and BUSCTL port do not seem useful in these parts, as they lack a set register, I removed them and adapted the gpio chip bases which are also used for the offset-calculations. Now both setting and resetting the chip selects works as expected from userland and from the kernelspace. Signed-off-by: Peter Turczak Signed-off-by: Greg Ungerer --- Reading git-diff-tree failed