devices.c
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/*
* Common devices definition for Gemini
*
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/global_reg.h>
static struct plat_serial8250_port serial_platform_data[] = {
{
.membase = (void *)IO_ADDRESS(GEMINI_UART_BASE),
.mapbase = GEMINI_UART_BASE,
.irq = IRQ_UART,
.uartclk = UART_CLK,
.regshift = 2,
.iotype = UPIO_MEM,
.type = PORT_16550A,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE,
},
{},
};
static struct platform_device serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = serial_platform_data,
},
};
int platform_register_uart(void)
{
return platform_device_register(&serial_device);
}
static struct resource flash_resource = {
.start = GEMINI_FLASH_BASE,
.flags = IORESOURCE_MEM,
};
static struct physmap_flash_data pflash_platform_data = {};
static struct platform_device pflash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &pflash_platform_data,
},
.resource = &flash_resource,
.num_resources = 1,
};
int platform_register_pflash(unsigned int size, struct mtd_partition *parts,
unsigned int nr_parts)
{
unsigned int reg;
reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS);
if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL)
return -ENXIO;
if (reg & FLASH_WIDTH_16BIT)
pflash_platform_data.width = 2;
else
pflash_platform_data.width = 1;
/* enable parallel flash pins and disable others */
reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
reg &= ~PFLASH_PADS_DISABLE;
reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE;
__raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
flash_resource.end = flash_resource.start + size - 1;
pflash_platform_data.parts = parts;
pflash_platform_data.nr_parts = nr_parts;
return platform_device_register(&pflash_device);
}
static struct resource gemini_rtc_resources[] = {
[0] = {
.start = GEMINI_RTC_BASE,
.end = GEMINI_RTC_BASE + 0x24,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_RTC,
.end = IRQ_RTC,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device gemini_rtc_device = {
.name = "rtc-gemini",
.id = 0,
.num_resources = ARRAY_SIZE(gemini_rtc_resources),
.resource = gemini_rtc_resources,
};
int __init platform_register_rtc(void)
{
return platform_device_register(&gemini_rtc_device);
}