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m68knommu: platform setup for 520x ColdFire parts 

Switch to platform style configuration for 520x ColdFire parts.
Initial support is for the UARTs. DMA support moved to common code
for all ColdFire parts.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Greg Ungerer 2008-02-01 17:34:10 +10:00 committed by Linus Torvalds
parent 4b61a353e4
commit 7dabb9ad8d
1 changed files with 94 additions and 11 deletions
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105
arch/m68knommu/platform/520x/config.c
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@ -5,7 +5,7 @@
*
* Copyright (C) 2005, Freescale (www.freescale.com)
* Copyright (C) 2005, Intec Automation (mike@steroidmicros.com)
* Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
*/
@ -13,17 +13,13 @@
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/dma.h>
/***************************************************************************/
/*
* DMA channel base address table.
*/
unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS];
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
/***************************************************************************/
@ -31,6 +27,82 @@ void coldfire_reset(void);
/***************************************************************************/
static struct mcf_platform_uart m520x_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = MCFINT_VECBASE + MCFINT_UART0,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = MCFINT_VECBASE + MCFINT_UART1,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE3,
.irq = MCFINT_VECBASE + MCFINT_UART2,
},
{ },
};
static struct platform_device m520x_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m520x_uart_platform,
};
static struct platform_device *m520x_devices[] __initdata = {
&m520x_uart,
};
/***************************************************************************/
#define INTC0 (MCF_MBAR + MCFICM_INTC0)
static void __init m520x_uart_init_line(int line, int irq)
{
u32 imr;
u16 par;
u8 par2;
writeb(0x03, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
imr = readl(INTC0 + MCFINTC_IMRL);
imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
writel(imr, INTC0 + MCFINTC_IMRL);
switch (line) {
case 0:
par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
MCF_GPIO_PAR_UART_PAR_URXD0;
writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
break;
case 1:
par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
MCF_GPIO_PAR_UART_PAR_URXD1;
writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
break;
case 2:
par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
par2 &= ~0x0F;
par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
break;
}
}
static void __init m520x_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m520x_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m520x_uart_init_line(line, m520x_uart_platform[line].irq);
}
/***************************************************************************/
/*
* Program the vector to be an auto-vectored.
*/
@ -42,9 +114,20 @@ void mcf_autovector(unsigned int vec)
/***************************************************************************/
void config_BSP(char *commandp, int size)
void __init config_BSP(char *commandp, int size)
{
mach_reset = coldfire_reset;
m520x_uarts_init();
}
/***************************************************************************/
static int __init init_BSP(void)
{
platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/