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/***************************************************************************/
/*
* linux/arch/m68knommu/platform/528x/config.c
*
* Sub-architcture dependent initialization code for the Freescale
* 5280, 5281 and 5282 CPUs.
*
* Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
*/
/***************************************************************************/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/spi/spi.h>
#include <linux/gpio.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
#include <asm/mcfqspi.h>
/***************************************************************************/
#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
static struct resource m528x_qspi_resources[] = {
{
.start = MCFQSPI_IOBASE,
.end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1,
.flags = IORESOURCE_MEM,
},
{
.start = MCFINT_VECBASE + MCFINT_QSPI,
.end = MCFINT_VECBASE + MCFINT_QSPI,
.flags = IORESOURCE_IRQ,
},
};
#define MCFQSPI_CS0 147
#define MCFQSPI_CS1 148
#define MCFQSPI_CS2 149
#define MCFQSPI_CS3 150
static int m528x_cs_setup(struct mcfqspi_cs_control *cs_control)
{
int status;
status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0");
if (status) {
pr_debug("gpio_request for MCFQSPI_CS0 failed\n");
goto fail0;
}
status = gpio_direction_output(MCFQSPI_CS0, 1);
if (status) {
pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n");
goto fail1;
}
status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1");
if (status) {
pr_debug("gpio_request for MCFQSPI_CS1 failed\n");
goto fail1;
}
status = gpio_direction_output(MCFQSPI_CS1, 1);
if (status) {
pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n");
goto fail2;
}
status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2");
if (status) {
pr_debug("gpio_request for MCFQSPI_CS2 failed\n");
goto fail2;
}
status = gpio_direction_output(MCFQSPI_CS2, 1);
if (status) {
pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n");
goto fail3;
}
status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3");
if (status) {
pr_debug("gpio_request for MCFQSPI_CS3 failed\n");
goto fail3;
}
status = gpio_direction_output(MCFQSPI_CS3, 1);
if (status) {
pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n");
goto fail4;
}
return 0;
fail4:
gpio_free(MCFQSPI_CS3);
fail3:
gpio_free(MCFQSPI_CS2);
fail2:
gpio_free(MCFQSPI_CS1);
fail1:
gpio_free(MCFQSPI_CS0);
fail0:
return status;
}
static void m528x_cs_teardown(struct mcfqspi_cs_control *cs_control)
{
gpio_free(MCFQSPI_CS3);
gpio_free(MCFQSPI_CS2);
gpio_free(MCFQSPI_CS1);
gpio_free(MCFQSPI_CS0);
}
static void m528x_cs_select(struct mcfqspi_cs_control *cs_control,
u8 chip_select, bool cs_high)
{
gpio_set_value(MCFQSPI_CS0 + chip_select, cs_high);
}
static void m528x_cs_deselect(struct mcfqspi_cs_control *cs_control,
u8 chip_select, bool cs_high)
{
gpio_set_value(MCFQSPI_CS0 + chip_select, !cs_high);
}
static struct mcfqspi_cs_control m528x_cs_control = {
.setup = m528x_cs_setup,
.teardown = m528x_cs_teardown,
.select = m528x_cs_select,
.deselect = m528x_cs_deselect,
};
static struct mcfqspi_platform_data m528x_qspi_data = {
.bus_num = 0,
.num_chipselect = 4,
.cs_control = &m528x_cs_control,
};
static struct platform_device m528x_qspi = {
.name = "mcfqspi",
.id = 0,
.num_resources = ARRAY_SIZE(m528x_qspi_resources),
.resource = m528x_qspi_resources,
.dev.platform_data = &m528x_qspi_data,
};
static void __init m528x_qspi_init(void)
{
/* setup Port QS for QSPI with gpio CS control */
__raw_writeb(0x07, MCFGPIO_PQSPAR);
}
#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
static struct platform_device *m528x_devices[] __initdata = {
#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
&m528x_qspi,
#endif
};
/***************************************************************************/
static void __init m528x_uarts_init(void)
{
u8 port;
/* make sure PUAPAR is set for UART0 and UART1 */
port = readb(MCF5282_GPIO_PUAPAR);
port |= 0x03 | (0x03 << 2);
writeb(port, MCF5282_GPIO_PUAPAR);
}
/***************************************************************************/
static void __init m528x_fec_init(void)
{
u16 v16;
/* Set multi-function pins to ethernet mode for fec0 */
v16 = readw(MCF_IPSBAR + 0x100056);
writew(v16 | 0xf00, MCF_IPSBAR + 0x100056);
writeb(0xc0, MCF_IPSBAR + 0x100058);
}
/***************************************************************************/
static void m528x_cpu_reset(void)
{
local_irq_disable();
__raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
}
/***************************************************************************/
#ifdef CONFIG_WILDFIRE
void wildfire_halt(void)
{
writeb(0, 0x30000007);
writeb(0x2, 0x30000007);
}
#endif
#ifdef CONFIG_WILDFIREMOD
void wildfiremod_halt(void)
{
printk(KERN_INFO "WildFireMod hibernating...\n");
/* Set portE.5 to Digital IO */
MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2));
/* Make portE.5 an output */
MCF5282_GPIO_DDRE |= (1 << 5);
/* Now toggle portE.5 from low to high */
MCF5282_GPIO_PORTE &= ~(1 << 5);
MCF5282_GPIO_PORTE |= (1 << 5);
printk(KERN_EMERG "Failed to hibernate. Halting!\n");
}
#endif
void __init config_BSP(char *commandp, int size)
{
#ifdef CONFIG_WILDFIRE
mach_halt = wildfire_halt;
#endif
#ifdef CONFIG_WILDFIREMOD
mach_halt = wildfiremod_halt;
#endif
}
/***************************************************************************/
static int __init init_BSP(void)
{
mach_reset = m528x_cpu_reset;
mach_sched_init = hw_timer_init;
m528x_uarts_init();
m528x_fec_init();
#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
m528x_qspi_init();
#endif
platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/
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