164 lines
4.7 KiB
C
164 lines
4.7 KiB
C
/*
|
|
* Copyright (C) 2008-2009 ST-Ericsson SA
|
|
*
|
|
* Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/mfd/abx500/ab8500.h>
|
|
#include <linux/mfd/dbx500-prcmu.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/perf/arm_pmu.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/random.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "setup.h"
|
|
|
|
#include "board-mop500-regulators.h"
|
|
#include "board-mop500.h"
|
|
#include "db8500-regs.h"
|
|
#include "id.h"
|
|
|
|
static struct ab8500_platform_data ab8500_platdata = {
|
|
.regulator = &ab8500_regulator_plat_data,
|
|
};
|
|
|
|
static struct prcmu_pdata db8500_prcmu_pdata = {
|
|
.ab_platdata = &ab8500_platdata,
|
|
.version_offset = DB8500_PRCMU_FW_VERSION_OFFSET,
|
|
.legacy_offset = DB8500_PRCMU_LEGACY_OFFSET,
|
|
};
|
|
|
|
static void __init u8500_map_io(void)
|
|
{
|
|
debug_ll_io_init();
|
|
ux500_setup_id();
|
|
}
|
|
|
|
/*
|
|
* The PMU IRQ lines of two cores are wired together into a single interrupt.
|
|
* Bounce the interrupt to the other core if it's not ours.
|
|
*/
|
|
static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler)
|
|
{
|
|
irqreturn_t ret = handler(irq, dev);
|
|
int other = !smp_processor_id();
|
|
|
|
if (ret == IRQ_NONE && cpu_online(other))
|
|
irq_set_affinity(irq, cpumask_of(other));
|
|
|
|
/*
|
|
* We should be able to get away with the amount of IRQ_NONEs we give,
|
|
* while still having the spurious IRQ detection code kick in if the
|
|
* interrupt really starts hitting spuriously.
|
|
*/
|
|
return ret;
|
|
}
|
|
|
|
static struct arm_pmu_platdata db8500_pmu_platdata = {
|
|
.handle_irq = db8500_pmu_handler,
|
|
};
|
|
|
|
static const char *db8500_read_soc_id(void)
|
|
{
|
|
void __iomem *uid;
|
|
|
|
uid = ioremap(U8500_BB_UID_BASE, 0x20);
|
|
if (!uid)
|
|
return NULL;
|
|
/* Throw these device-specific numbers into the entropy pool */
|
|
add_device_randomness(uid, 0x14);
|
|
return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
|
|
readl((u32 *)uid+0),
|
|
readl((u32 *)uid+1), readl((u32 *)uid+2),
|
|
readl((u32 *)uid+3), readl((u32 *)uid+4));
|
|
iounmap(uid);
|
|
}
|
|
|
|
static struct device * __init db8500_soc_device_init(void)
|
|
{
|
|
const char *soc_id = db8500_read_soc_id();
|
|
|
|
return ux500_soc_device_init(soc_id);
|
|
}
|
|
|
|
static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
|
|
/* Requires call-back bindings. */
|
|
OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
|
|
/* Requires DMA bindings. */
|
|
OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000,
|
|
"ux500-msp-i2s.0", &msp0_platform_data),
|
|
OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000,
|
|
"ux500-msp-i2s.1", &msp1_platform_data),
|
|
OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000,
|
|
"ux500-msp-i2s.2", &msp2_platform_data),
|
|
OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
|
|
"ux500-msp-i2s.3", &msp3_platform_data),
|
|
/* Requires non-DT:able platform data. */
|
|
OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
|
|
&db8500_prcmu_pdata),
|
|
OF_DEV_AUXDATA("stericsson,ux500-cryp", 0xa03cb000, "cryp1", NULL),
|
|
OF_DEV_AUXDATA("stericsson,ux500-hash", 0xa03c2000, "hash1", NULL),
|
|
OF_DEV_AUXDATA("stericsson,snd-soc-mop500", 0, "snd-soc-mop500.0",
|
|
NULL),
|
|
{},
|
|
};
|
|
|
|
static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = {
|
|
OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
|
|
&db8500_prcmu_pdata),
|
|
{},
|
|
};
|
|
|
|
static const struct of_device_id u8500_local_bus_nodes[] = {
|
|
/* only create devices below soc node */
|
|
{ .compatible = "stericsson,db8500", },
|
|
{ .compatible = "stericsson,db8500-prcmu", },
|
|
{ .compatible = "simple-bus"},
|
|
{ },
|
|
};
|
|
|
|
static void __init u8500_init_machine(void)
|
|
{
|
|
struct device *parent = db8500_soc_device_init();
|
|
|
|
/* automatically probe child nodes of dbx5x0 devices */
|
|
if (of_machine_is_compatible("st-ericsson,u8540"))
|
|
of_platform_populate(NULL, u8500_local_bus_nodes,
|
|
u8540_auxdata_lookup, parent);
|
|
else
|
|
of_platform_populate(NULL, u8500_local_bus_nodes,
|
|
u8500_auxdata_lookup, parent);
|
|
}
|
|
|
|
static const char * stericsson_dt_platform_compat[] = {
|
|
"st-ericsson,u8500",
|
|
"st-ericsson,u8540",
|
|
"st-ericsson,u9500",
|
|
"st-ericsson,u9540",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)")
|
|
.map_io = u8500_map_io,
|
|
.init_irq = ux500_init_irq,
|
|
.init_machine = u8500_init_machine,
|
|
.init_late = NULL,
|
|
.dt_compat = stericsson_dt_platform_compat,
|
|
.restart = ux500_restart,
|
|
MACHINE_END
|