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ARM: nomadik: register GPIOs dynamically

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Register the NHK8815 GPIO devices dynamically like the Ux500 does
it.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2012-01-09 11:42:39 +01:00
parent f8f5701bda
commit 056c78d3a2
1 changed files with 50 additions and 70 deletions
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120
arch/arm/mach-nomadik/cpu-8815.c
View File

@ -35,86 +35,66 @@
#include "clock.h"
#include "cpu-8815.h"
#define __MEM_4K_RESOURCE(x) \
.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
/* The 8815 has 4 GPIO blocks, let's register them immediately */
#define GPIO_RESOURCE(block) \
{ \
.start = NOMADIK_GPIO##block##_BASE, \
.end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \
.flags = IORESOURCE_MEM, \
}, \
{ \
.start = IRQ_GPIO##block, \
.end = IRQ_GPIO##block, \
.flags = IORESOURCE_IRQ, \
}
#define GPIO_DEVICE(block) \
{ \
.name = "gpio", \
.id = block, \
.num_resources = 2, \
.resource = &cpu8815_gpio_resources[block * 2], \
.dev = { \
.platform_data = &cpu8815_gpio[block], \
}, \
}
static struct nmk_gpio_platform_data cpu8815_gpio[] = {
{
.name = "GPIO-0-31",
.first_gpio = 0,
.first_irq = NOMADIK_GPIO_TO_IRQ(0),
}, {
.name = "GPIO-32-63",
.first_gpio = 32,
.first_irq = NOMADIK_GPIO_TO_IRQ(32),
}, {
.name = "GPIO-64-95",
.first_gpio = 64,
.first_irq = NOMADIK_GPIO_TO_IRQ(64),
}, {
.name = "GPIO-96-127", /* 124..127 not routed to pin */
.first_gpio = 96,
.first_irq = NOMADIK_GPIO_TO_IRQ(96),
}
};
static struct resource cpu8815_gpio_resources[] = {
GPIO_RESOURCE(0),
GPIO_RESOURCE(1),
GPIO_RESOURCE(2),
GPIO_RESOURCE(3),
};
static struct platform_device cpu8815_platform_gpio[] = {
GPIO_DEVICE(0),
GPIO_DEVICE(1),
GPIO_DEVICE(2),
GPIO_DEVICE(3),
};
static AMBA_APB_DEVICE(cpu8815_amba_rng, "rng", 0, NOMADIK_RNG_BASE, { }, NULL);
static struct platform_device *platform_devs[] __initdata = {
cpu8815_platform_gpio + 0,
cpu8815_platform_gpio + 1,
cpu8815_platform_gpio + 2,
cpu8815_platform_gpio + 3,
};
static struct amba_device *amba_devs[] __initdata = {
&cpu8815_amba_rng_device
};
/* The 8815 has 4 GPIO blocks, let's register them immediately */
static resource_size_t __initdata cpu8815_gpio_base[] = {
NOMADIK_GPIO0_BASE,
NOMADIK_GPIO1_BASE,
NOMADIK_GPIO2_BASE,
NOMADIK_GPIO3_BASE,
};
static struct platform_device *
cpu8815_add_gpio(int id, resource_size_t addr, int irq,
struct nmk_gpio_platform_data *pdata)
{
struct resource resources[] = {
{
.start = addr,
.end = addr + 127,
.flags = IORESOURCE_MEM,
},
{
.start = irq,
.end = irq,
.flags = IORESOURCE_IRQ,
}
};
return platform_device_register_resndata(NULL, "gpio", id,
resources, ARRAY_SIZE(resources),
pdata, sizeof(*pdata));
}
void cpu8815_add_gpios(resource_size_t *base, int num, int irq,
struct nmk_gpio_platform_data *pdata)
{
int first = 0;
int i;
for (i = 0; i < num; i++, first += 32, irq++) {
pdata->first_gpio = first;
pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
pdata->num_gpio = 32;
cpu8815_add_gpio(i, base[i], irq, pdata);
}
}
static int __init cpu8815_init(void)
{
int i;
struct nmk_gpio_platform_data pdata = {
/* No custom data yet */
};
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base),
IRQ_GPIO0, &pdata);
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
amba_device_register(amba_devs[i], &iomem_resource);
return 0;