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m68knommu: platform setup for 520x ColdFire parts

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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);
/***************************************************************************/