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| author | Scott Wood <scottwood@freescale.com> | 2007-07-16 13:32:24 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2007-10-04 11:02:18 -0500 |
| commit | 7f21f52940212c25b4387c2450018e161043549a (patch) | |
| tree | 9df63e5508151be0c6fd9e02b692f5ca1edf4394 | |
| parent | 2652d4ec4a363487d0106a8bf51f1b081dd7e397 (diff) | |
| download | kernel_samsung_smdk4412-7f21f52940212c25b4387c2450018e161043549a.zip kernel_samsung_smdk4412-7f21f52940212c25b4387c2450018e161043549a.tar.gz kernel_samsung_smdk4412-7f21f52940212c25b4387c2450018e161043549a.tar.bz2 | |
[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>
| -rw-r--r-- | arch/powerpc/sysdev/cpm2_common.c | 33 | ||||
| -rw-r--r-- | include/asm-powerpc/cpm2.h | 9 |
2 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/cpm2_common.c b/arch/powerpc/sysdev/cpm2_common.c index c6dc0bf..fc4c995 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); +} diff --git a/include/asm-powerpc/cpm2.h b/include/asm-powerpc/cpm2.h index 41a45db..d7b57ac 100644 --- a/include/asm-powerpc/cpm2.h +++ b/include/asm-powerpc/cpm2.h @@ -1247,5 +1247,14 @@ enum cpm_clk { extern int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode); extern int cpm2_smc_clk_setup(enum cpm_clk_target target, int clock); +#define CPM_PIN_INPUT 0 +#define CPM_PIN_OUTPUT 1 +#define CPM_PIN_PRIMARY 0 +#define CPM_PIN_SECONDARY 2 +#define CPM_PIN_GPIO 4 +#define CPM_PIN_OPENDRAIN 8 + +void cpm2_set_pin(int port, int pin, int flags); + #endif /* __CPM2__ */ #endif /* __KERNEL__ */ |