m68knommu: platform setup for 523x ColdFire parts

Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kishon · Feb 1, 2008 · 4b61a35 · 4b61a35
1 parent cf64c23
commit 4b61a35
Showing 1 changed file with 65 additions and 10 deletions.
diff --git a/arch/m68knommu/platform/523x/config.c b/arch/m68knommu/platform/523x/config.c
@@ -16,26 +16,70 @@
 #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>
 
 /***************************************************************************/
 
 void coldfire_reset(void);
 
 /***************************************************************************/
 
-/*
- *	DMA channel base address table.
- */
-unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
-        MCF_MBAR + MCFDMA_BASE0,
+static struct mcf_platform_uart m523x_uart_platform[] = {
+	{
+		.mapbase	= MCF_MBAR + MCFUART_BASE1,
+		.irq		= MCFINT_VECBASE + MCFINT_UART0,
+	},
+	{
+		.mapbase 	= MCF_MBAR + MCFUART_BASE2,
+		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 1,
+	},
+	{
+		.mapbase 	= MCF_MBAR + MCFUART_BASE3,
+		.irq		= MCFINT_VECBASE + MCFINT_UART0 + 2,
+	},
+	{ },
+};
+
+static struct platform_device m523x_uart = {
+	.name			= "mcfuart",
+	.id			= 0,
+	.dev.platform_data	= m523x_uart_platform,
+};
+
+static struct platform_device *m523x_devices[] __initdata = {
+	&m523x_uart,
 };
 
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+/***************************************************************************/
+
+#define	INTC0	(MCF_MBAR + MCFICM_INTC0)
+
+static void __init m523x_uart_init_line(int line, int irq)
+{
+	u32 imr;
+
+	if ((line < 0) || (line > 2))
+		return;
+
+	writeb(0x30+line, (INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line));
+
+	imr = readl(INTC0 + MCFINTC_IMRL);
+	imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
+	writel(imr, INTC0 + MCFINTC_IMRL);
+}
+
+static void __init m523x_uarts_init(void)
+{
+	const int nrlines = ARRAY_SIZE(m523x_uart_platform);
+	int line;
+
+	for (line = 0; (line < nrlines); line++)
+		m523x_uart_init_line(line, m523x_uart_platform[line].irq);
+}
 
 /***************************************************************************/
 
@@ -49,15 +93,26 @@ void mcf_disableall(void)
 
 void mcf_autovector(unsigned int vec)
 {
-	/* Everything is auto-vectored on the 5272 */
+	/* Everything is auto-vectored on the 523x */
 }
 
 /***************************************************************************/
 
-void config_BSP(char *commandp, int size)
+void __init config_BSP(char *commandp, int size)
 {
 	mcf_disableall();
 	mach_reset = coldfire_reset;
+	m523x_uarts_init();
 }
 
 /***************************************************************************/
+
+static int __init init_BSP(void)
+{
+	platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices));
+	return 0;
+}
+
+arch_initcall(init_BSP);
+
+/***************************************************************************/