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authorScott Wood <scottwood@freescale.com>2007-07-16 13:32:24 -0500
committerKumar Gala <galak@kernel.crashing.org>2007-10-04 11:02:18 -0500
commit7f21f52940212c25b4387c2450018e161043549a (patch)
tree9df63e5508151be0c6fd9e02b692f5ca1edf4394 /arch/powerpc/sysdev
parent2652d4ec4a363487d0106a8bf51f1b081dd7e397 (diff)
[POWERPC] cpm2: Add cpm2_set_pin().
This provides a generic way for board code to set up CPM pins, rather than directly poking magic values into registers. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r--arch/powerpc/sysdev/cpm2_common.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/cpm2_common.c b/arch/powerpc/sysdev/cpm2_common.c
index c6dc0bf614b..fc4c9956538 100644
--- a/arch/powerpc/sysdev/cpm2_common.c
+++ b/arch/powerpc/sysdev/cpm2_common.c
@@ -422,3 +422,36 @@ void *cpm_dpram_addr(unsigned long offset)
return (void *)(im_dprambase + offset);
}
EXPORT_SYMBOL(cpm_dpram_addr);
+
+struct cpm2_ioports {
+ u32 dir, par, sor, odr, dat;
+ u32 res[3];
+};
+
+void cpm2_set_pin(int port, int pin, int flags)
+{
+ struct cpm2_ioports __iomem *iop =
+ (struct cpm2_ioports __iomem *)&cpm2_immr->im_ioport;
+
+ pin = 1 << (31 - pin);
+
+ if (flags & CPM_PIN_OUTPUT)
+ setbits32(&iop[port].dir, pin);
+ else
+ clrbits32(&iop[port].dir, pin);
+
+ if (!(flags & CPM_PIN_GPIO))
+ setbits32(&iop[port].par, pin);
+ else
+ clrbits32(&iop[port].par, pin);
+
+ if (flags & CPM_PIN_SECONDARY)
+ setbits32(&iop[port].sor, pin);
+ else
+ clrbits32(&iop[port].sor, pin);
+
+ if (flags & CPM_PIN_OPENDRAIN)
+ setbits32(&iop[port].odr, pin);
+ else
+ clrbits32(&iop[port].odr, pin);
+}