[M68KNOMMU]: platform setup for 5249 ColdFire parts

From: Greg Ungerer
Date: Fri Feb 01 2008 - 02:36:54 EST


Switch to platform style configuration for 5249 ColdFire parts.
Initial support is for the UARTs. DMA support moved to common code
for all ColdFire parts.

Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxx>
---


diff -Naurp linux-2.6.24/arch/m68knommu/platform/5249/config.c linux-2.6.24-uc0/arch/m68knommu/platform/5249/config.c
--- linux-2.6.24/arch/m68knommu/platform/5249/config.c 2008-01-25 08:58:37.000000000 +1000
+++ linux-2.6.24-uc0/arch/m68knommu/platform/5249/config.c 2008-01-11 13:37:38.000000000 +1000
@@ -12,11 +12,11 @@
#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>

/***************************************************************************/

@@ -24,17 +24,51 @@ void coldfire_reset(void);

/***************************************************************************/

-/*
- * DMA channel base address table.
- */
-unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
- MCF_MBAR + MCFDMA_BASE0,
- MCF_MBAR + MCFDMA_BASE1,
- MCF_MBAR + MCFDMA_BASE2,
- MCF_MBAR + MCFDMA_BASE3,
+static struct mcf_platform_uart m5249_uart_platform[] = {
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE1,
+ .irq = 73,
+ },
+ {
+ .mapbase = MCF_MBAR + MCFUART_BASE2,
+ .irq = 74,
+ }
+};
+
+static struct platform_device m5249_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m5249_uart_platform,
};

-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+static struct platform_device *m5249_devices[] __initdata = {
+ &m5249_uart,
+};
+
+/***************************************************************************/
+
+static void __init m5249_uart_init_line(int line, int irq)
+{
+ if (line == 0) {
+ writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
+ writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
+ mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
+ } else if (line == 1) {
+ writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
+ writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
+ mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
+ }
+}
+
+static void __init m5249_uarts_init(void)
+{
+ const int nrlines = ARRAY_SIZE(m5249_uart_platform);
+ int line;
+
+ for (line = 0; (line < nrlines); line++)
+ m5249_uart_init_line(line, m5249_uart_platform[line].irq);
+}
+

/***************************************************************************/

@@ -85,10 +119,21 @@ int mcf_timerirqpending(int timer)

/***************************************************************************/

-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
{
mcf_setimr(MCFSIM_IMR_MASKALL);
mach_reset = coldfire_reset;
}

/***************************************************************************/
+
+static int __init init_BSP(void)
+{
+ m5249_uarts_init();
+ platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
+ return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/
--
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