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Message-Id: <200802010734.m117YWOS022601@goober>
Date: Fri, 1 Feb 2008 17:34:32 +1000
From: Greg Ungerer <gerg@...pgear.com>
To: torvalds@...ux-foundation.org
Cc: gerg@...inux.org, linux-kernel@...r.kernel.org
Subject: [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@...inux.org>
---
diff -Naurp linux-2.6.24/arch/m68knommu/platform/5272/config.c linux-2.6.24-uc0/arch/m68knommu/platform/5272/config.c
--- linux-2.6.24/arch/m68knommu/platform/5272/config.c 2008-01-25 08:58:37.000000000 +1000
+++ linux-2.6.24-uc0/arch/m68knommu/platform/5272/config.c 2008-01-11 13:37:38.000000000 +1000
#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,
+ },
+ { },
+};
+
+static struct platform_device m5272_uart = {
+ .name = "mcfuart",
+ .id = 0,
+ .dev.platform_data = m5272_uart_platform,
};
-unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
+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);
+
+/***************************************************************************/
--
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