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/*
* 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 <linux/io.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/dma-mapping.h>
#include <linux/irqchip/arm-vic.h>
#include <linux/platform_data/clk-nomadik.h>
#include <linux/platform_data/pinctrl-nomadik.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/map.h>
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include "cpu-8815.h"
/* 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 inline void
cpu8815_add_pinctrl(struct device *parent, const char *name)
{
struct platform_device_info pdevinfo = {
.parent = parent,
.name = name,
.id = -1,
};
platform_device_register_full(&pdevinfo);
}
static int __init cpu8815_init(void)
{
struct nmk_gpio_platform_data pdata = {
/* No custom data yet */
};
cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base),
IRQ_GPIO0, &pdata);
cpu8815_add_pinctrl(NULL, "pinctrl-stn8815");
amba_apb_device_add(NULL, "rng", NOMADIK_RNG_BASE, SZ_4K, 0, 0, NULL, 0);
amba_apb_device_add(NULL, "rtc-pl031", NOMADIK_RTC_BASE, SZ_4K, IRQ_RTC_RTT, 0, NULL, 0);
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.
*/
nomadik_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;
}
void cpu8815_restart(char mode, const char *cmd)
{
void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
/* FIXME: use egpio when implemented */
/* Write anything to Reset status register */
writel(1, src_rstsr);
}
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