Release 4.8 arch/arm/mach-clps711x/devices.c
/*
* CLPS711X common devices definitions
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (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>
static const struct resource clps711x_cpuidle_res __initconst =
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + HALT, SZ_128);
static void __init clps711x_add_cpuidle(void)
{
platform_device_register_simple("clps711x-cpuidle", PLATFORM_DEVID_NONE,
&clps711x_cpuidle_res, 1);
}
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static const phys_addr_t clps711x_gpios[][2] __initconst = {
{ PADR, PADDR },
{ PBDR, PBDDR },
{ PCDR, PCDDR },
{ PDDR, PDDDR },
{ PEDR, PEDDR },
};
static void __init clps711x_add_gpio(void)
{
unsigned i;
struct resource gpio_res[2];
memset(gpio_res, 0, sizeof(gpio_res));
gpio_res[0].flags = IORESOURCE_MEM;
gpio_res[1].flags = IORESOURCE_MEM;
for (i = 0; i < ARRAY_SIZE(clps711x_gpios); i++) {
gpio_res[0].start = CLPS711X_PHYS_BASE + clps711x_gpios[i][0];
gpio_res[0].end = gpio_res[0].start;
gpio_res[1].start = CLPS711X_PHYS_BASE + clps711x_gpios[i][1];
gpio_res[1].end = gpio_res[1].start;
platform_device_register_simple("clps711x-gpio", i,
gpio_res, ARRAY_SIZE(gpio_res));
}
}
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const struct resource clps711x_syscon_res[] __initconst = {
/* SYSCON1, SYSFLG1 */
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON1, SZ_128),
/* SYSCON2, SYSFLG2 */
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON2, SZ_128),
/* SYSCON3 */
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON3, SZ_64),
};
static void __init clps711x_add_syscon(void)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE(clps711x_syscon_res); i++)
platform_device_register_simple("syscon", i + 1,
&clps711x_syscon_res[i], 1);
}
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static const struct resource clps711x_uart1_res[] __initconst = {
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + UARTDR1, SZ_128),
DEFINE_RES_IRQ(IRQ_UTXINT1),
DEFINE_RES_IRQ(IRQ_URXINT1),
};
static const struct resource clps711x_uart2_res[] __initconst = {
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + UARTDR2, SZ_128),
DEFINE_RES_IRQ(IRQ_UTXINT2),
DEFINE_RES_IRQ(IRQ_URXINT2),
};
static void __init clps711x_add_uart(void)
{
platform_device_register_simple("clps711x-uart", 0, clps711x_uart1_res,
ARRAY_SIZE(clps711x_uart1_res));
platform_device_register_simple("clps711x-uart", 1, clps711x_uart2_res,
ARRAY_SIZE(clps711x_uart2_res));
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;
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);
}
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void __init clps711x_devices_init(void)
{
clps711x_add_cpuidle();
clps711x_add_gpio();
clps711x_add_syscon();
clps711x_add_uart();
clps711x_soc_init();
}
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