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ARM: clps711x: Add SOC BUS support 

Add SOC BUS support with CPU family, machine name and unique ID.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Alexander Shiyan 2014-08-19 16:31:15 +04:00 committed by Arnd Bergmann
parent e917ba44f8
commit e4e3a37d33
2 changed files with 52 additions and 1 deletions
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1
arch/arm/Kconfig
View File

@ -387,6 +387,7 @@ config ARCH_CLPS711X
select CPU_ARM720T
select GENERIC_CLOCKEVENTS
select MFD_SYSCON
select SOC_BUS
help
Support for Cirrus Logic 711x/721x/731x based boards.

52
arch/arm/mach-clps711x/devices.c
View File

@ -1,7 +1,7 @@
/*
* CLPS711X common devices definitions
*
* Author: Alexander Shiyan <shc_work@mail.ru>, 2013
* Author: Alexander Shiyan <shc_work@mail.ru>, 2013-2014
*
* 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
@ -9,8 +9,15 @@
* (at your option) any later version.
*/
#include <linux/io.h>
#include <linux/of_fdt.h>
#include <linux/platform_device.h>
#include <linux/random.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include <asm/system_info.h>
#include <mach/hardware.h>
@ -90,10 +97,53 @@ static void __init clps711x_add_uart(void)
ARRAY_SIZE(clps711x_uart2_res));
};
static void __init clps711x_soc_init(void)
{
struct soc_device_attribute *soc_dev_attr;
struct soc_device *soc_dev;
void __iomem *base;
u32 id[5];
base = ioremap(CLPS711X_PHYS_BASE, SZ_32K);
if (!base)
return;
id[0] = readl(base + UNIQID);
id[1] = readl(base + RANDID0);
id[2] = readl(base + RANDID1);
id[3] = readl(base + RANDID2);
id[4] = readl(base + RANDID3);
system_rev = SYSFLG1_VERID(readl(base + SYSFLG1));
add_device_randomness(id, sizeof(id));
system_serial_low = id[0];
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
goto out_unmap;
soc_dev_attr->machine = of_flat_dt_get_machine_name();
soc_dev_attr->family = "Cirrus Logic CLPS711X";
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", system_rev);
soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%08x", id[0]);
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->revision);
kfree(soc_dev_attr->soc_id);
kfree(soc_dev_attr);
}
out_unmap:
iounmap(base);
}
void __init clps711x_devices_init(void)
{
clps711x_add_cpuidle();
clps711x_add_gpio();
clps711x_add_syscon();
clps711x_add_uart();
clps711x_soc_init();
}