Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Driver specific changes

Again, a lot of platforms have changes in here: pxa, samsung, omap,
at91, imx, ...

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  ARM: sa1100: clean up of the clock support
  ARM: pxa: add dummy clock for sa1100-rtc
  RTC: sa1100: support sa1100, pxa and mmp soc families
  RTC: sa1100: remove redundant code of setting alarm
  RTC: sa1100: Clean out ost register
  Input: zylonite-wm97xx - replace IRQ_GPIO() with gpio_to_irq()
  pcmcia: pxa: replace IRQ_GPIO() with gpio_to_irq()
  ARM: EXYNOS: Modified files for SPI consolidation work
  ARM: S5P64X0: Enable SDHCI support
  ARM: S5P64X0: Add lookup of sdhci-s3c clocks using generic names
  ARM: S5P64X0: Add HSMMC setup for host Controller
  ARM: EXYNOS: Add USB OHCI support to ORIGEN board
  USB: Add Samsung Exynos OHCI diver
  ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
  ARM: EXYNOS: Add USB OHCI device
  net: macb: fix build break with !CONFIG_OF
  i2c: tegra: Support DVC controller in device tree
  i2c: tegra: Add __devinit/exit to probe/remove
  net/at91_ether: use gpio_is_valid for phy IRQ line
  ARM: at91/net: add macb ethernet controller in 9g45/9g20 DT
  ...
This commit is contained in:
Linus Torvalds
2012-01-09 14:39:22 -08:00
當前提交 2ac9d7aacc
共有 169 個文件被更改,包括 3029 次插入1650 次删除

查看文件

@@ -141,6 +141,12 @@ config GPIO_PL061
help
Say yes here to support the PrimeCell PL061 GPIO device
config GPIO_PXA
bool "PXA GPIO support"
depends on ARCH_PXA || ARCH_MMP
help
Say yes here to support the PXA GPIO device
config GPIO_XILINX
bool "Xilinx GPIO support"
depends on PPC_OF || MICROBLAZE

查看文件

@@ -40,7 +40,7 @@ obj-$(CONFIG_GPIO_PCA953X) += gpio-pca953x.o
obj-$(CONFIG_GPIO_PCF857X) += gpio-pcf857x.o
obj-$(CONFIG_GPIO_PCH) += gpio-pch.o
obj-$(CONFIG_GPIO_PL061) += gpio-pl061.o
obj-$(CONFIG_PLAT_PXA) += gpio-pxa.o
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
obj-$(CONFIG_PLAT_SAMSUNG) += gpio-samsung.o
obj-$(CONFIG_ARCH_SA1100) += gpio-sa1100.o

查看文件

@@ -11,14 +11,46 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/syscore_ops.h>
#include <linux/slab.h>
#include <mach/gpio-pxa.h>
/*
* We handle the GPIOs by banks, each bank covers up to 32 GPIOs with
* one set of registers. The register offsets are organized below:
*
* GPLR GPDR GPSR GPCR GRER GFER GEDR
* BANK 0 - 0x0000 0x000C 0x0018 0x0024 0x0030 0x003C 0x0048
* BANK 1 - 0x0004 0x0010 0x001C 0x0028 0x0034 0x0040 0x004C
* BANK 2 - 0x0008 0x0014 0x0020 0x002C 0x0038 0x0044 0x0050
*
* BANK 3 - 0x0100 0x010C 0x0118 0x0124 0x0130 0x013C 0x0148
* BANK 4 - 0x0104 0x0110 0x011C 0x0128 0x0134 0x0140 0x014C
* BANK 5 - 0x0108 0x0114 0x0120 0x012C 0x0138 0x0144 0x0150
*
* NOTE:
* BANK 3 is only available on PXA27x and later processors.
* BANK 4 and 5 are only available on PXA935
*/
#define GPLR_OFFSET 0x00
#define GPDR_OFFSET 0x0C
#define GPSR_OFFSET 0x18
#define GPCR_OFFSET 0x24
#define GRER_OFFSET 0x30
#define GFER_OFFSET 0x3C
#define GEDR_OFFSET 0x48
#define GAFR_OFFSET 0x54
#define ED_MASK_OFFSET 0x9C /* GPIO edge detection for AP side */
#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
int pxa_last_gpio;
@@ -39,8 +71,20 @@ struct pxa_gpio_chip {
#endif
};
enum {
PXA25X_GPIO = 0,
PXA26X_GPIO,
PXA27X_GPIO,
PXA3XX_GPIO,
PXA93X_GPIO,
MMP_GPIO = 0x10,
MMP2_GPIO,
};
static DEFINE_SPINLOCK(gpio_lock);
static struct pxa_gpio_chip *pxa_gpio_chips;
static int gpio_type;
static void __iomem *gpio_reg_base;
#define for_each_gpio_chip(i, c) \
for (i = 0, c = &pxa_gpio_chips[0]; i <= pxa_last_gpio; i += 32, c++)
@@ -55,6 +99,122 @@ static inline struct pxa_gpio_chip *gpio_to_pxachip(unsigned gpio)
return &pxa_gpio_chips[gpio_to_bank(gpio)];
}
static inline int gpio_is_pxa_type(int type)
{
return (type & MMP_GPIO) == 0;
}
static inline int gpio_is_mmp_type(int type)
{
return (type & MMP_GPIO) != 0;
}
/* GPIO86/87/88/89 on PXA26x have their direction bits in PXA_GPDR(2 inverted,
* as well as their Alternate Function value being '1' for GPIO in GAFRx.
*/
static inline int __gpio_is_inverted(int gpio)
{
if ((gpio_type == PXA26X_GPIO) && (gpio > 85))
return 1;
return 0;
}
/*
* On PXA25x and PXA27x, GAFRx and GPDRx together decide the alternate
* function of a GPIO, and GPDRx cannot be altered once configured. It
* is attributed as "occupied" here (I know this terminology isn't
* accurate, you are welcome to propose a better one :-)
*/
static inline int __gpio_is_occupied(unsigned gpio)
{
struct pxa_gpio_chip *pxachip;
void __iomem *base;
unsigned long gafr = 0, gpdr = 0;
int ret, af = 0, dir = 0;
pxachip = gpio_to_pxachip(gpio);
base = gpio_chip_base(&pxachip->chip);
gpdr = readl_relaxed(base + GPDR_OFFSET);
switch (gpio_type) {
case PXA25X_GPIO:
case PXA26X_GPIO:
case PXA27X_GPIO:
gafr = readl_relaxed(base + GAFR_OFFSET);
af = (gafr >> ((gpio & 0xf) * 2)) & 0x3;
dir = gpdr & GPIO_bit(gpio);
if (__gpio_is_inverted(gpio))
ret = (af != 1) || (dir == 0);
else
ret = (af != 0) || (dir != 0);
break;
default:
ret = gpdr & GPIO_bit(gpio);
break;
}
return ret;
}
#ifdef CONFIG_ARCH_PXA
static inline int __pxa_gpio_to_irq(int gpio)
{
if (gpio_is_pxa_type(gpio_type))
return PXA_GPIO_TO_IRQ(gpio);
return -1;
}
static inline int __pxa_irq_to_gpio(int irq)
{
if (gpio_is_pxa_type(gpio_type))
return irq - PXA_GPIO_TO_IRQ(0);
return -1;
}
#else
static inline int __pxa_gpio_to_irq(int gpio) { return -1; }
static inline int __pxa_irq_to_gpio(int irq) { return -1; }
#endif
#ifdef CONFIG_ARCH_MMP
static inline int __mmp_gpio_to_irq(int gpio)
{
if (gpio_is_mmp_type(gpio_type))
return MMP_GPIO_TO_IRQ(gpio);
return -1;
}
static inline int __mmp_irq_to_gpio(int irq)
{
if (gpio_is_mmp_type(gpio_type))
return irq - MMP_GPIO_TO_IRQ(0);
return -1;
}
#else
static inline int __mmp_gpio_to_irq(int gpio) { return -1; }
static inline int __mmp_irq_to_gpio(int irq) { return -1; }
#endif
static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
int gpio, ret;
gpio = chip->base + offset;
ret = __pxa_gpio_to_irq(gpio);
if (ret >= 0)
return ret;
return __mmp_gpio_to_irq(gpio);
}
int pxa_irq_to_gpio(int irq)
{
int ret;
ret = __pxa_irq_to_gpio(irq);
if (ret >= 0)
return ret;
return __mmp_irq_to_gpio(irq);
}
static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
void __iomem *base = gpio_chip_base(chip);
@@ -63,12 +223,12 @@ static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
spin_lock_irqsave(&gpio_lock, flags);
value = __raw_readl(base + GPDR_OFFSET);
value = readl_relaxed(base + GPDR_OFFSET);
if (__gpio_is_inverted(chip->base + offset))
value |= mask;
else
value &= ~mask;
__raw_writel(value, base + GPDR_OFFSET);
writel_relaxed(value, base + GPDR_OFFSET);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
@@ -81,16 +241,16 @@ static int pxa_gpio_direction_output(struct gpio_chip *chip,
uint32_t tmp, mask = 1 << offset;
unsigned long flags;
__raw_writel(mask, base + (value ? GPSR_OFFSET : GPCR_OFFSET));
writel_relaxed(mask, base + (value ? GPSR_OFFSET : GPCR_OFFSET));
spin_lock_irqsave(&gpio_lock, flags);
tmp = __raw_readl(base + GPDR_OFFSET);
tmp = readl_relaxed(base + GPDR_OFFSET);
if (__gpio_is_inverted(chip->base + offset))
tmp &= ~mask;
else
tmp |= mask;
__raw_writel(tmp, base + GPDR_OFFSET);
writel_relaxed(tmp, base + GPDR_OFFSET);
spin_unlock_irqrestore(&gpio_lock, flags);
return 0;
@@ -98,16 +258,16 @@ static int pxa_gpio_direction_output(struct gpio_chip *chip,
static int pxa_gpio_get(struct gpio_chip *chip, unsigned offset)
{
return __raw_readl(gpio_chip_base(chip) + GPLR_OFFSET) & (1 << offset);
return readl_relaxed(gpio_chip_base(chip) + GPLR_OFFSET) & (1 << offset);
}
static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
__raw_writel(1 << offset, gpio_chip_base(chip) +
writel_relaxed(1 << offset, gpio_chip_base(chip) +
(value ? GPSR_OFFSET : GPCR_OFFSET));
}
static int __init pxa_init_gpio_chip(int gpio_end)
static int __devinit pxa_init_gpio_chip(int gpio_end)
{
int i, gpio, nbanks = gpio_to_bank(gpio_end) + 1;
struct pxa_gpio_chip *chips;
@@ -122,7 +282,7 @@ static int __init pxa_init_gpio_chip(int gpio_end)
struct gpio_chip *c = &chips[i].chip;
sprintf(chips[i].label, "gpio-%d", i);
chips[i].regbase = GPIO_BANK(i);
chips[i].regbase = gpio_reg_base + BANK_OFF(i);
c->base = gpio;
c->label = chips[i].label;
@@ -131,6 +291,7 @@ static int __init pxa_init_gpio_chip(int gpio_end)
c->direction_output = pxa_gpio_direction_output;
c->get = pxa_gpio_get;
c->set = pxa_gpio_set;
c->to_irq = pxa_gpio_to_irq;
/* number of GPIOs on last bank may be less than 32 */
c->ngpio = (gpio + 31 > gpio_end) ? (gpio_end - gpio + 1) : 32;
@@ -147,18 +308,18 @@ static inline void update_edge_detect(struct pxa_gpio_chip *c)
{
uint32_t grer, gfer;
grer = __raw_readl(c->regbase + GRER_OFFSET) & ~c->irq_mask;
gfer = __raw_readl(c->regbase + GFER_OFFSET) & ~c->irq_mask;
grer = readl_relaxed(c->regbase + GRER_OFFSET) & ~c->irq_mask;
gfer = readl_relaxed(c->regbase + GFER_OFFSET) & ~c->irq_mask;
grer |= c->irq_edge_rise & c->irq_mask;
gfer |= c->irq_edge_fall & c->irq_mask;
__raw_writel(grer, c->regbase + GRER_OFFSET);
__raw_writel(gfer, c->regbase + GFER_OFFSET);
writel_relaxed(grer, c->regbase + GRER_OFFSET);
writel_relaxed(gfer, c->regbase + GFER_OFFSET);
}
static int pxa_gpio_irq_type(struct irq_data *d, unsigned int type)
{
struct pxa_gpio_chip *c;
int gpio = irq_to_gpio(d->irq);
int gpio = pxa_irq_to_gpio(d->irq);
unsigned long gpdr, mask = GPIO_bit(gpio);
c = gpio_to_pxachip(gpio);
@@ -176,12 +337,12 @@ static int pxa_gpio_irq_type(struct irq_data *d, unsigned int type)
type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
}
gpdr = __raw_readl(c->regbase + GPDR_OFFSET);
gpdr = readl_relaxed(c->regbase + GPDR_OFFSET);
if (__gpio_is_inverted(gpio))
__raw_writel(gpdr | mask, c->regbase + GPDR_OFFSET);
writel_relaxed(gpdr | mask, c->regbase + GPDR_OFFSET);
else
__raw_writel(gpdr & ~mask, c->regbase + GPDR_OFFSET);
writel_relaxed(gpdr & ~mask, c->regbase + GPDR_OFFSET);
if (type & IRQ_TYPE_EDGE_RISING)
c->irq_edge_rise |= mask;
@@ -212,9 +373,9 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
for_each_gpio_chip(gpio, c) {
gpio_base = c->chip.base;
gedr = __raw_readl(c->regbase + GEDR_OFFSET);
gedr = readl_relaxed(c->regbase + GEDR_OFFSET);
gedr = gedr & c->irq_mask;
__raw_writel(gedr, c->regbase + GEDR_OFFSET);
writel_relaxed(gedr, c->regbase + GEDR_OFFSET);
n = find_first_bit(&gedr, BITS_PER_LONG);
while (n < BITS_PER_LONG) {
@@ -229,29 +390,29 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
static void pxa_ack_muxed_gpio(struct irq_data *d)
{
int gpio = irq_to_gpio(d->irq);
int gpio = pxa_irq_to_gpio(d->irq);
struct pxa_gpio_chip *c = gpio_to_pxachip(gpio);
__raw_writel(GPIO_bit(gpio), c->regbase + GEDR_OFFSET);
writel_relaxed(GPIO_bit(gpio), c->regbase + GEDR_OFFSET);
}
static void pxa_mask_muxed_gpio(struct irq_data *d)
{
int gpio = irq_to_gpio(d->irq);
int gpio = pxa_irq_to_gpio(d->irq);
struct pxa_gpio_chip *c = gpio_to_pxachip(gpio);
uint32_t grer, gfer;
c->irq_mask &= ~GPIO_bit(gpio);
grer = __raw_readl(c->regbase + GRER_OFFSET) & ~GPIO_bit(gpio);
gfer = __raw_readl(c->regbase + GFER_OFFSET) & ~GPIO_bit(gpio);
__raw_writel(grer, c->regbase + GRER_OFFSET);
__raw_writel(gfer, c->regbase + GFER_OFFSET);
grer = readl_relaxed(c->regbase + GRER_OFFSET) & ~GPIO_bit(gpio);
gfer = readl_relaxed(c->regbase + GFER_OFFSET) & ~GPIO_bit(gpio);
writel_relaxed(grer, c->regbase + GRER_OFFSET);
writel_relaxed(gfer, c->regbase + GFER_OFFSET);
}
static void pxa_unmask_muxed_gpio(struct irq_data *d)
{
int gpio = irq_to_gpio(d->irq);
int gpio = pxa_irq_to_gpio(d->irq);
struct pxa_gpio_chip *c = gpio_to_pxachip(gpio);
c->irq_mask |= GPIO_bit(gpio);
@@ -266,34 +427,143 @@ static struct irq_chip pxa_muxed_gpio_chip = {
.irq_set_type = pxa_gpio_irq_type,
};
void __init pxa_init_gpio(int mux_irq, int start, int end, set_wake_t fn)
static int pxa_gpio_nums(void)
{
int count = 0;
#ifdef CONFIG_ARCH_PXA
if (cpu_is_pxa25x()) {
#ifdef CONFIG_CPU_PXA26x
count = 89;
gpio_type = PXA26X_GPIO;
#elif defined(CONFIG_PXA25x)
count = 84;
gpio_type = PXA26X_GPIO;
#endif /* CONFIG_CPU_PXA26x */
} else if (cpu_is_pxa27x()) {
count = 120;
gpio_type = PXA27X_GPIO;
} else if (cpu_is_pxa93x() || cpu_is_pxa95x()) {
count = 191;
gpio_type = PXA93X_GPIO;
} else if (cpu_is_pxa3xx()) {
count = 127;
gpio_type = PXA3XX_GPIO;
}
#endif /* CONFIG_ARCH_PXA */
#ifdef CONFIG_ARCH_MMP
if (cpu_is_pxa168() || cpu_is_pxa910()) {
count = 127;
gpio_type = MMP_GPIO;
} else if (cpu_is_mmp2()) {
count = 191;
gpio_type = MMP2_GPIO;
}
#endif /* CONFIG_ARCH_MMP */
return count;
}
static int __devinit pxa_gpio_probe(struct platform_device *pdev)
{
struct pxa_gpio_chip *c;
int gpio, irq;
struct resource *res;
struct clk *clk;
int gpio, irq, ret;
int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
pxa_last_gpio = end;
pxa_last_gpio = pxa_gpio_nums();
if (!pxa_last_gpio)
return -EINVAL;
irq0 = platform_get_irq_byname(pdev, "gpio0");
irq1 = platform_get_irq_byname(pdev, "gpio1");
irq_mux = platform_get_irq_byname(pdev, "gpio_mux");
if ((irq0 > 0 && irq1 <= 0) || (irq0 <= 0 && irq1 > 0)
|| (irq_mux <= 0))
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
gpio_reg_base = ioremap(res->start, resource_size(res));
if (!gpio_reg_base)
return -EINVAL;
if (irq0 > 0)
gpio_offset = 2;
clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Error %ld to get gpio clock\n",
PTR_ERR(clk));
iounmap(gpio_reg_base);
return PTR_ERR(clk);
}
ret = clk_prepare(clk);
if (ret) {
clk_put(clk);
iounmap(gpio_reg_base);
return ret;
}
ret = clk_enable(clk);
if (ret) {
clk_unprepare(clk);
clk_put(clk);
iounmap(gpio_reg_base);
return ret;
}
/* Initialize GPIO chips */
pxa_init_gpio_chip(end);
pxa_init_gpio_chip(pxa_last_gpio);
/* clear all GPIO edge detects */
for_each_gpio_chip(gpio, c) {
__raw_writel(0, c->regbase + GFER_OFFSET);
__raw_writel(0, c->regbase + GRER_OFFSET);
__raw_writel(~0,c->regbase + GEDR_OFFSET);
writel_relaxed(0, c->regbase + GFER_OFFSET);
writel_relaxed(0, c->regbase + GRER_OFFSET);
writel_relaxed(~0,c->regbase + GEDR_OFFSET);
/* unmask GPIO edge detect for AP side */
if (gpio_is_mmp_type(gpio_type))
writel_relaxed(~0, c->regbase + ED_MASK_OFFSET);
}
for (irq = gpio_to_irq(start); irq <= gpio_to_irq(end); irq++) {
#ifdef CONFIG_ARCH_PXA
irq = gpio_to_irq(0);
irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
irq_set_chained_handler(IRQ_GPIO0, pxa_gpio_demux_handler);
irq = gpio_to_irq(1);
irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
irq_set_chained_handler(IRQ_GPIO1, pxa_gpio_demux_handler);
#endif
for (irq = gpio_to_irq(gpio_offset);
irq <= gpio_to_irq(pxa_last_gpio); irq++) {
irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
/* Install handler for GPIO>=2 edge detect interrupts */
irq_set_chained_handler(mux_irq, pxa_gpio_demux_handler);
pxa_muxed_gpio_chip.irq_set_wake = fn;
irq_set_chained_handler(irq_mux, pxa_gpio_demux_handler);
return 0;
}
static struct platform_driver pxa_gpio_driver = {
.probe = pxa_gpio_probe,
.driver = {
.name = "pxa-gpio",
},
};
static int __init pxa_gpio_init(void)
{
return platform_driver_register(&pxa_gpio_driver);
}
postcore_initcall(pxa_gpio_init);
#ifdef CONFIG_PM
static int pxa_gpio_suspend(void)
{
@@ -301,13 +571,13 @@ static int pxa_gpio_suspend(void)
int gpio;
for_each_gpio_chip(gpio, c) {
c->saved_gplr = __raw_readl(c->regbase + GPLR_OFFSET);
c->saved_gpdr = __raw_readl(c->regbase + GPDR_OFFSET);
c->saved_grer = __raw_readl(c->regbase + GRER_OFFSET);
c->saved_gfer = __raw_readl(c->regbase + GFER_OFFSET);
c->saved_gplr = readl_relaxed(c->regbase + GPLR_OFFSET);
c->saved_gpdr = readl_relaxed(c->regbase + GPDR_OFFSET);
c->saved_grer = readl_relaxed(c->regbase + GRER_OFFSET);
c->saved_gfer = readl_relaxed(c->regbase + GFER_OFFSET);
/* Clear GPIO transition detect bits */
__raw_writel(0xffffffff, c->regbase + GEDR_OFFSET);
writel_relaxed(0xffffffff, c->regbase + GEDR_OFFSET);
}
return 0;
}
@@ -319,12 +589,12 @@ static void pxa_gpio_resume(void)
for_each_gpio_chip(gpio, c) {
/* restore level with set/clear */
__raw_writel( c->saved_gplr, c->regbase + GPSR_OFFSET);
__raw_writel(~c->saved_gplr, c->regbase + GPCR_OFFSET);
writel_relaxed( c->saved_gplr, c->regbase + GPSR_OFFSET);
writel_relaxed(~c->saved_gplr, c->regbase + GPCR_OFFSET);
__raw_writel(c->saved_grer, c->regbase + GRER_OFFSET);
__raw_writel(c->saved_gfer, c->regbase + GFER_OFFSET);
__raw_writel(c->saved_gpdr, c->regbase + GPDR_OFFSET);
writel_relaxed(c->saved_grer, c->regbase + GRER_OFFSET);
writel_relaxed(c->saved_gfer, c->regbase + GFER_OFFSET);
writel_relaxed(c->saved_gpdr, c->regbase + GPDR_OFFSET);
}
}
#else
@@ -336,3 +606,10 @@ struct syscore_ops pxa_gpio_syscore_ops = {
.suspend = pxa_gpio_suspend,
.resume = pxa_gpio_resume,
};
static int __init pxa_gpio_sysinit(void)
{
register_syscore_ops(&pxa_gpio_syscore_ops);
return 0;
}
postcore_initcall(pxa_gpio_sysinit);