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yaml
---
r: 302647
b: refs/heads/master
c: c269d4e
h: refs/heads/master
i:
  302645: 9fd8b65
  302643: f26528c
  302639: bfc6691
v: v3
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Greg Ungerer committed May 20, 2012
1 parent 45cd3c6 commit 1a38689
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: f106eac91edbd28de23b0bc58be82f68d976e24f
refs/heads/master: c269d4efaab0847947e87df7a5a8b6c5817d9f1d
54 changes: 54 additions & 0 deletions trunk/arch/m68k/include/asm/mcfgpio.h
Original file line number Diff line number Diff line change
Expand Up @@ -37,4 +37,58 @@ void mcf_gpio_set_value_fast(struct gpio_chip *, unsigned, int);
int mcf_gpio_request(struct gpio_chip *, unsigned);
void mcf_gpio_free(struct gpio_chip *, unsigned);

/*
* Define macros to ease the pain of setting up the GPIO tables. There
* are two cases we need to deal with here, they cover all currently
* available ColdFire GPIO hardware. There are of course minor differences
* in the layout and number of bits in each ColdFire part, but the macros
* take all that in.
*
* Firstly is the conventional GPIO registers where we toggle individual
* bits in a register, preserving the other bits in the register. For
* lack of a better term I have called this the slow method.
*/
#define MCFGPS(mlabel, mbase, mngpio, mpddr, mpodr, mppdr) \
{ \
.gpio_chip = { \
.label = #mlabel, \
.request = mcf_gpio_request, \
.free = mcf_gpio_free, \
.direction_input = mcf_gpio_direction_input, \
.direction_output = mcf_gpio_direction_output,\
.get = mcf_gpio_get_value, \
.set = mcf_gpio_set_value, \
.base = mbase, \
.ngpio = mngpio, \
}, \
.pddr = (void __iomem *) mpddr, \
.podr = (void __iomem *) mpodr, \
.ppdr = (void __iomem *) mppdr, \
}

/*
* Secondly is the faster case, where we have set and clear registers
* that allow us to set or clear a bit with a single write, not having
* to worry about preserving other bits.
*/
#define MCFGPF(mlabel, mbase, mngpio) \
{ \
.gpio_chip = { \
.label = #mlabel, \
.request = mcf_gpio_request, \
.free = mcf_gpio_free, \
.direction_input = mcf_gpio_direction_input, \
.direction_output = mcf_gpio_direction_output,\
.get = mcf_gpio_get_value, \
.set = mcf_gpio_set_value_fast, \
.base = mbase, \
.ngpio = mngpio, \
}, \
.pddr = (void __iomem *) MCFGPIO_PDDR_##mlabel, \
.podr = (void __iomem *) MCFGPIO_PODR_##mlabel, \
.ppdr = (void __iomem *) MCFGPIO_PPDSDR_##mlabel, \
.setr = (void __iomem *) MCFGPIO_PPDSDR_##mlabel, \
.clrr = (void __iomem *) MCFGPIO_PCLRR_##mlabel, \
}

#endif

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