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m68knommu: platform setup for 5272 ColdFire parts 

Switch to platform style configuration for 5272 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 17:34:32 +10:00 committed by Linus Torvalds
parent 7dabb9ad8d
commit 84e6defae6
1 changed files with 63 additions and 9 deletions
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72
arch/m68knommu/platform/5272/config.c
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@ -13,11 +13,11 @@
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/dma.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfdma.h>
#include <asm/mcfuart.h>
/***************************************************************************/
@ -37,14 +37,57 @@ unsigned char ledbank = 0xff;
/***************************************************************************/
/*
* DMA channel base address table.
*/
unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
MCF_MBAR + MCFDMA_BASE0,
static struct mcf_platform_uart m5272_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = 73,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = 74,
},
{ },
};
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
static struct platform_device m5272_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m5272_uart_platform,
};
static struct platform_device *m5272_devices[] __initdata = {
&m5272_uart,
};
/***************************************************************************/
static void __init m5272_uart_init_line(int line, int irq)
{
u32 v;
if ((line >= 0) && (line < 2)) {
v = (line) ? 0x0e000000 : 0xe0000000;
writel(v, MCF_MBAR + MCFSIM_ICR2);
/* Enable the output lines for the serial ports */
v = readl(MCF_MBAR + MCFSIM_PBCNT);
v = (v & ~0x000000ff) | 0x00000055;
writel(v, MCF_MBAR + MCFSIM_PBCNT);
v = readl(MCF_MBAR + MCFSIM_PDCNT);
v = (v & ~0x000003fc) | 0x000002a8;
writel(v, MCF_MBAR + MCFSIM_PDCNT);
}
}
static void __init m5272_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m5272_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m5272_uart_init_line(line, m5272_uart_platform[line].irq);
}
/***************************************************************************/
@ -93,7 +136,7 @@ int mcf_timerirqpending(int timer)
/***************************************************************************/
void config_BSP(char *commandp, int size)
void __init config_BSP(char *commandp, int size)
{
#if defined (CONFIG_MOD5272)
volatile unsigned char *pivrp;
@ -125,3 +168,14 @@ void config_BSP(char *commandp, int size)
}
/***************************************************************************/
static int __init init_BSP(void)
{
m5272_uarts_init();
platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/