From 056c78d3a28ab7c8438b42f4d0915030ca8f51b9 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 9 Jan 2012 11:42:39 +0100 Subject: ARM: nomadik: register GPIOs dynamically Register the NHK8815 GPIO devices dynamically like the Ux500 does it. Acked-by: Arnd Bergmann Signed-off-by: Linus Walleij --- arch/arm/mach-nomadik/cpu-8815.c | 114 ++++++++++++++++----------------------- 1 file changed, 47 insertions(+), 67 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-nomadik/cpu-8815.c b/arch/arm/mach-nomadik/cpu-8815.c index 27f43a46985e..b79b3846935a 100644 --- a/arch/arm/mach-nomadik/cpu-8815.c +++ b/arch/arm/mach-nomadik/cpu-8815.c @@ -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 AMBA_APB_DEVICE(cpu8815_amba_rng, "rng", 0, NOMADIK_RNG_BASE, { }, NULL); -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 amba_device *amba_devs[] __initdata = { + &cpu8815_amba_rng_device }; -static struct resource cpu8815_gpio_resources[] = { - GPIO_RESOURCE(0), - GPIO_RESOURCE(1), - GPIO_RESOURCE(2), - GPIO_RESOURCE(3), +/* 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_platform_gpio[] = { - GPIO_DEVICE(0), - GPIO_DEVICE(1), - GPIO_DEVICE(2), - GPIO_DEVICE(3), -}; +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)); +} -static AMBA_APB_DEVICE(cpu8815_amba_rng, "rng", 0, NOMADIK_RNG_BASE, { }, NULL); +void cpu8815_add_gpios(resource_size_t *base, int num, int irq, + struct nmk_gpio_platform_data *pdata) +{ + int first = 0; + int i; -static struct platform_device *platform_devs[] __initdata = { - cpu8815_platform_gpio + 0, - cpu8815_platform_gpio + 1, - cpu8815_platform_gpio + 2, - cpu8815_platform_gpio + 3, -}; + 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; -static struct amba_device *amba_devs[] __initdata = { - &cpu8815_amba_rng_device -}; + 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; -- cgit