提交 7f21f529 编写于 作者: S Scott Wood 提交者: Kumar Gala

[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: NScott Wood <scottwood@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
上级 2652d4ec
......@@ -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);
}
......@@ -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__ */
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册