mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
0f33286190
The <[plat|mach]/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
167 lines
4.2 KiB
C
167 lines
4.2 KiB
C
/*
|
|
* Copyright STMicroelectronics, 2007.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <plat/gpio-nomadik.h>
|
|
#include <mach/hardware.h>
|
|
#include <mach/irqs.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/hardware/vic.h>
|
|
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
#include "clock.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 struct amba_device cpu8815_amba_rng = {
|
|
.dev = {
|
|
.init_name = "rng",
|
|
},
|
|
__MEM_4K_RESOURCE(NOMADIK_RNG_BASE),
|
|
};
|
|
|
|
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
|
|
};
|
|
|
|
static int __init cpu8815_init(void)
|
|
{
|
|
int i;
|
|
|
|
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
|
|
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
|
|
amba_device_register(amba_devs[i], &iomem_resource);
|
|
return 0;
|
|
}
|
|
arch_initcall(cpu8815_init);
|
|
|
|
/* All SoC devices live in the same area (see hardware.h) */
|
|
static struct map_desc nomadik_io_desc[] __initdata = {
|
|
{
|
|
.virtual = NOMADIK_IO_VIRTUAL,
|
|
.pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
|
|
.length = NOMADIK_IO_SIZE,
|
|
.type = MT_DEVICE,
|
|
}
|
|
/* static ram and secured ram may be added later */
|
|
};
|
|
|
|
void __init cpu8815_map_io(void)
|
|
{
|
|
iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
|
|
}
|
|
|
|
void __init cpu8815_init_irq(void)
|
|
{
|
|
/* This modified VIC cell has two register blocks, at 0 and 0x20 */
|
|
vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
|
|
vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
|
|
|
|
/*
|
|
* Init clocks here so that they are available for system timer
|
|
* initialization.
|
|
*/
|
|
clk_init();
|
|
}
|
|
|
|
/*
|
|
* This function is called from the board init ("init_machine").
|
|
*/
|
|
void __init cpu8815_platform_init(void)
|
|
{
|
|
#ifdef CONFIG_CACHE_L2X0
|
|
/* At full speed latency must be >=2, so 0x249 in low bits */
|
|
l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
|
|
#endif
|
|
return;
|
|
}
|