arch/mips/sgi-ip32/ip32-platform.c

Source file repositories/reference/linux-study-clean/arch/mips/sgi-ip32/ip32-platform.c

File Facts

System
Linux kernel
Corpus path
arch/mips/sgi-ip32/ip32-platform.c
Extension
.c
Size
3051 bytes
Lines
139
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

device_initcall(uart8250_init);

static __init int meth_devinit(void)
{
	struct platform_device *pd;
	int ret;

	pd = platform_device_alloc("meth", -1);
	if (!pd)
		return -ENOMEM;

	ret = platform_device_add(pd);
	if (ret)
		platform_device_put(pd);

	return ret;
}

device_initcall(meth_devinit);

static __init int sgio2audio_devinit(void)
{
	struct platform_device *pd;
	int ret;

	pd = platform_device_alloc("sgio2audio", -1);
	if (!pd)
		return -ENOMEM;

	ret = platform_device_add(pd);
	if (ret)
		platform_device_put(pd);

	return ret;
}

device_initcall(sgio2audio_devinit);

static __init int sgio2btns_devinit(void)
{
	return IS_ERR(platform_device_register_simple("sgibtns", -1, NULL, 0));
}

device_initcall(sgio2btns_devinit);

#define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc))
#define MACE_RTC_RES_END (MACE_RTC_RES_START + 32767)

static struct resource ip32_rtc_resources[] = {
	{
		.start	= MACEISA_RTC_IRQ,
		.end	= MACEISA_RTC_IRQ,
		.flags	= IORESOURCE_IRQ
	}, {
		.start	= MACE_RTC_RES_START,
		.end	= MACE_RTC_RES_END,
		.flags	= IORESOURCE_MEM,
	}
};

/* RTC registers on IP32 are each padded by 256 bytes (0x100). */
static struct ds1685_rtc_platform_data
ip32_rtc_platform_data[] = {
	{
		.regstep = 0x100,
		.bcd_mode = true,
		.no_irq = false,
		.uie_unsupported = false,
		.access_type = ds1685_reg_direct,
		.plat_prepare_poweroff = ip32_prepare_poweroff,
	},
};

struct platform_device ip32_rtc_device = {
	.name			= "rtc-ds1685",
	.id			= -1,
	.dev			= {
		.platform_data	= ip32_rtc_platform_data,
	},
	.num_resources		= ARRAY_SIZE(ip32_rtc_resources),
	.resource		= ip32_rtc_resources,
};

static __init int sgio2_rtc_devinit(void)
{
	return platform_device_register(&ip32_rtc_device);
}

device_initcall(sgio2_rtc_devinit);

Annotation

Implementation Notes