153 lines
4.1 KiB
C
153 lines
4.1 KiB
C
/*
|
|
* Copyright (C) ST-Ericsson SA 2010
|
|
*
|
|
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
|
|
* Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/mfd/dbx500-prcmu.h>
|
|
#include <linux/clksrc-dbx500-prcmu.h>
|
|
#include <linux/sys_soc.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/irqchip/arm-gic.h>
|
|
#include <linux/platform_data/clk-ux500.h>
|
|
#include <linux/platform_data/arm-ux500-pm.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "setup.h"
|
|
|
|
#include "board-mop500.h"
|
|
#include "db8500-regs.h"
|
|
#include "id.h"
|
|
|
|
void ux500_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
local_irq_disable();
|
|
local_fiq_disable();
|
|
|
|
prcmu_system_reset(0);
|
|
}
|
|
|
|
/*
|
|
* FIXME: Should we set up the GPIO domain here?
|
|
*
|
|
* The problem is that we cannot put the interrupt resources into the platform
|
|
* device until the irqdomain has been added. Right now, we set the GIC interrupt
|
|
* domain from init_irq(), then load the gpio driver from
|
|
* core_initcall(nmk_gpio_init) and add the platform devices from
|
|
* arch_initcall(customize_machine).
|
|
*
|
|
* This feels fragile because it depends on the gpio device getting probed
|
|
* _before_ any device uses the gpio interrupts.
|
|
*/
|
|
void __init ux500_init_irq(void)
|
|
{
|
|
gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
|
|
irqchip_init();
|
|
|
|
/*
|
|
* Init clocks here so that they are available for system timer
|
|
* initialization.
|
|
*/
|
|
if (cpu_is_u8500_family()) {
|
|
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
|
|
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
|
|
|
|
u8500_of_clk_init(U8500_CLKRST1_BASE,
|
|
U8500_CLKRST2_BASE,
|
|
U8500_CLKRST3_BASE,
|
|
U8500_CLKRST5_BASE,
|
|
U8500_CLKRST6_BASE);
|
|
} else if (cpu_is_u9540()) {
|
|
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
|
|
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
|
|
u9540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
|
|
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
|
|
U8500_CLKRST6_BASE);
|
|
} else if (cpu_is_u8540()) {
|
|
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
|
|
ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
|
|
u8540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
|
|
U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
|
|
U8500_CLKRST6_BASE);
|
|
}
|
|
}
|
|
|
|
static const char * __init ux500_get_machine(void)
|
|
{
|
|
return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
|
|
}
|
|
|
|
static const char * __init ux500_get_family(void)
|
|
{
|
|
return kasprintf(GFP_KERNEL, "ux500");
|
|
}
|
|
|
|
static const char * __init ux500_get_revision(void)
|
|
{
|
|
unsigned int rev = dbx500_revision();
|
|
|
|
if (rev == 0x01)
|
|
return kasprintf(GFP_KERNEL, "%s", "ED");
|
|
else if (rev >= 0xA0)
|
|
return kasprintf(GFP_KERNEL, "%d.%d",
|
|
(rev >> 4) - 0xA + 1, rev & 0xf);
|
|
|
|
return kasprintf(GFP_KERNEL, "%s", "Unknown");
|
|
}
|
|
|
|
static ssize_t ux500_get_process(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
if (dbx500_id.process == 0x00)
|
|
return sprintf(buf, "Standard\n");
|
|
|
|
return sprintf(buf, "%02xnm\n", dbx500_id.process);
|
|
}
|
|
|
|
static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
|
|
const char *soc_id)
|
|
{
|
|
soc_dev_attr->soc_id = soc_id;
|
|
soc_dev_attr->machine = ux500_get_machine();
|
|
soc_dev_attr->family = ux500_get_family();
|
|
soc_dev_attr->revision = ux500_get_revision();
|
|
}
|
|
|
|
static const struct device_attribute ux500_soc_attr =
|
|
__ATTR(process, S_IRUGO, ux500_get_process, NULL);
|
|
|
|
struct device * __init ux500_soc_device_init(const char *soc_id)
|
|
{
|
|
struct device *parent;
|
|
struct soc_device *soc_dev;
|
|
struct soc_device_attribute *soc_dev_attr;
|
|
|
|
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
|
|
if (!soc_dev_attr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
soc_info_populate(soc_dev_attr, soc_id);
|
|
|
|
soc_dev = soc_device_register(soc_dev_attr);
|
|
if (IS_ERR(soc_dev)) {
|
|
kfree(soc_dev_attr);
|
|
return NULL;
|
|
}
|
|
|
|
parent = soc_device_to_device(soc_dev);
|
|
device_create_file(parent, &ux500_soc_attr);
|
|
|
|
return parent;
|
|
}
|