Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7f21f529 authored by Scott Wood's avatar Scott Wood Committed by Kumar Gala
Browse files

[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: default avatarScott Wood <scottwood@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 2652d4ec

arch/powerpc/sysdev/cpm2_common.c

+33 −0
Original line number Diff line number Diff line
@@ -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);

}

include/asm-powerpc/cpm2.h

+9 −0
Original line number Diff line number Diff line
@@ -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__ */